huawei bsc6000 kpi ref
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference Contents
Issue 03 (2007-05-09) Huawei Technologies Proprietary i
Contents
1 BSC Measurement......................................................................................................................1-1
1.1 Overview of BSC Measurement....................................................................................................................1-2
1.2 Access Measurement per BSC ......................................................................... .............................................1-2
1.2.1 Overview..............................................................................................................................................1-2
1.2.2 Immediate Assignment Requests per BSC................................................................................ ...........1-4
1.2.3 Immediate Assignment Commands per BSC.......................................................................................1-5
1.2.4 SDCCH Seizure Requests per BSC .................................................................. ...................................1-5
1.2.5 Failed SDCCH Seizures due to Busy SDCCH per BSC ...................................................................... 1-6
1.2.6 Successful SDCCH Seizures per BSC ................................................................... ..............................1-6
1.2.7 Call Drops on SDCCH per BSC ...................................................................... ....................................1-7
1.2.8 Traffic Volume on SDCCH per BSC........................................................ ............................................1-7
1.2.9 Available SDCCHs per BSC......................................................................... .......................................1-8
1.2.10 Configured SDCCHs per BSC...........................................................................................................1-8
1.2.11 TCH Seizure Requests per BSC (Signaling Channel)........................................................................1-9
1.2.12 Failed TCH Seizures due to Busy TCH per BSC (Signaling Channel)..............................................1-9
1.2.13 Successful TCH Seizures per BSC (Signaling Channel) ................................................................. 1-10
1.2.14 Call Drops on TCH per BSC (Signaling Channel).............................................................. .............1-10
1.2.15 Traffic Volume on TCH per BSC (Signaling Channel) .............................................................. ......1-11
1.2.16 TCH Seizure Requests per BSC (Traffic Channel)............................................................. ............. 1-11
1.2.17 Failed TCH Seizures due to Busy TCH per BSC (Traffic Channel) ................................................1-12
1.2.18 Successful TCH Seizures per BSC (Traffic Channel)............................. .........................................1-12
1.2.19 Call Drops on TCH in Stable State per BSC (Traffic Channel) ....................................................... 1-13
1.2.20 TCH Seizure Requests in TCH Handovers per BSC (Traffic Channel).......................... .................1-13
1.2.21 Failed TCH Seizures in TCH Handovers due to Busy TCH per BSC (Traffic Channel) .................1-14
1.2.22 Successful TCH Seizures in TCH handovers per BSC (Traffic Channel)........................................1-14
1.2.23 Call Drops in TCH Handovers per BSC (Traffic Channel)................................. .............................1-15
1.2.24 Traffic Volume on TCH per BSC (Traffic Channel) ....................................................................... .1-15
1.2.25 Available TCHs per BSC ......................................................................... ........................................1-16
1.2.26 Configured TCHs per BSC .............................................................. ................................................1-16
1.2.27 Call Setup Indications per BSC (CS Service) ...................................................................... ............1-17
1.2.28 Random Access Success Ratio per BSC ................................................................ ..........................1-17
1.2.29 TCH Assignment Success Ratio per BSC....................................................................... .................1-18
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Contents
HUAWEI BSC6000 Base Station Controller
Performance Counter Reference
ii Huawei Technologies Proprietary Issue 03 (2007-05-09)
1.2.30 Congestion Ratio on SDCCH per BSC............................................................................................1-18
1.2.31 Call Drop Ratio on SDCCH per BSC....................................................................... .......................1-18
1.2.32 SDCCH Availability per BSC ......................................................... ................................................. 1-19
1.2.33 Congestion Ratio on TCH per BSC............................................................ .....................................1-19
1.2.34 Call Drop Ratio on TCH per BSC....................................................................................................1-20
1.2.35 Traffic Call Drop Ratio on TCH per BSC........................................................................................1-20
1.2.36 TCH Availability per BSC ..................................................................... ..........................................1-21
1.2.37 Call Setup Success Ratio per BSC (Immediate Assignment)..................................... ......................1-21
1.3 TRX Measurement per BSC........................................................................................................................1-21
1.3.1 Overview............................................................................................................................................1-21
1.3.2 Number of Configured TRXs per BSC..............................................................................................1-22
1.3.3 Number of Available TRXs per BSC ............................................................. ....................................1-22
1.3.4 TRX Availability per BSC ................................................................ ................................................. 1-22
1.4 Call Measurement per BSC.........................................................................................................................1-23
1.4.1 Overview............................................................................................................................................1-23
1.4.2 MSC Rejects in Response to the CM Service Requests from the MS per BSC (Congestion) ...........1-24
1.4.3 MSC Rejects in Response to the CM Service Requests from the MS per BSC (Network Failure) ...1-24
1.4.4 MSC Rejects in Response to the CM Service Requests from the MS per BSC (Illegal MS) ............1-25
1.4.5 MSC Rejects in Response to the CM Service Requests from the MS per BSC (Other Causes)........ 1-25
1.4.6 Mean Interval between Random Access Attempts per BSC (MOC).................................................. 1-26
1.4.7 Mean Interval between Random Access Attempts per BSC (PS Call)............................................... 1-26
1.4.8 Paging Requests on the Abis Interface per BSC (CS Service)...........................................................1-26
1.4.9 Successful Pagings on the Abis Interface per BSC (CS Service).......................................................1-27 1.4.10 PCH Overloads due to CS Service Counted Through the Indications from the Abis Interface per BSC
....................................................................................................................................................................1-27
1.4.11 RACH Overloads due to CS Service Counted Through the Indications from the Abis Interface per
BSC.............................................................................................................................................................1-28
1.4.12 Paging Requests on the Abis Interface per BSC (PS Service) ......................................................... 1-28
1.4.13 PCH Overloads due to PS Service Counted through the Indications from the Abis Interface per BSC
....................................................................................................................................................................1-29
1.4.14 Immediate Assignment Requests per BSC (PS Service)............................................... ...................1-29
1.4.15 Immediate Assignment Commands per BSC (PS Service).............................................................. 1-30
1.5 Assignment Measurement per BSC.............................................................................................................1-30 1.5.1 Overview............................................................................................................................................1-30
1.5.2 Failed Assignments per BSC (Invalid State)......................................................................................1-31
1.5.3 Failed Assignments per BSC (Invalid Message)................................................................................1-31
1.5.4 Failed Assignments per BSC (Channel Unavailable)..................................................................... ....1-32
1.5.5 Failed Assignments per BSC (Terrestrial Resource Unavailable)..................................... .................1-32
1.5.6 Failed Assignments per BSC (Terrestrial Circuit Already Allocated)......................... .......................1-33
1.5.7 Failed Assignments per BSC (Equipment Failure) ........................................................................ ....1-33
1.5.8 Failed Assignments per BSC (Reconnection to Old Channels) ......................................................... 1-34
1.5.9 Failed Assignments per BSC (Timer Expired)...................................................................................1-34
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference Contents
Issue 03 (2007-05-09) Huawei Technologies Proprietary iii
1.5.10 Failed Assignments per BSC (Other Causes)...................................................................................1-35
1.5.11 CHAN ACT NACK Messages Sent by BTS in Immediate Assignment Procedure per BSC ..........1-36
1.5.12 Channel Activation Timeouts in Immediate Assignment Procedure per BSC .................................1-36
1.6 Call Drop Measurement per BSC................................................................................................................1-37
1.6.1 Overview............................................................................................................................................1-37
1.6.2 Successful Connections per BSC (TCHF) (Traffic Channel).............................................................1-38
1.6.3 Call Drops after Answers per BSC (TCHF) (Traffic Channel) .......................................................... 1-38
1.6.4 Call Drops on TCH per BSC (Error Indication).................................................................................1-38
1.6.5 Call Drops on TCH per BSC (Connection Failure) ........................................................ ...................1-40
1.6.6 Call Drops on TCH per BSC (Release Indication).............................................................................1-41
1.6.7 Call Drops on TCH per BSC (Abis Terrestrial Link Failure)............................................................. 1-42
1.6.8 Call Drops on TCH per BSC (Forced Handover) .......................................................... ....................1-42
1.6.9 Call Drops on TCH per BSC (Other Causes).....................................................................................1-43
1.7 Handover Failure Measurement per BSC....................................................................................................1-44
1.7.1 Overview............................................................................................................................................1-44
1.7.2 Failed Reconnections to Old Channels upon Intra-Cell Handover Failure per BSC .........................1-45
1.7.3 Successful Reconnections to Old Channels upon Intra-Cell Handover Failure per BSC ..................1-46
1.7.4 Failed Reconnections to Old Channels upon Internal Outgoing Cell Handover Failure per BSC.....1-48
1.7.5 Successful Reconnections to Old Channels upon Internal Outgoing Cell Handover Failure per BSC..1-
49
1.7.6 Failed Reconnections to Old Channels upon External Outgoing Cell Handover Failure per BSC....1-51
1.7.7 Successful Reconnections to Old Channels upon External Outgoing Cell Handover Failure per BSC.1-
53
1.7.8 Failed Reconnections to Old Channels upon Inter-RAT Outgoing Cell Handover Failure per BSC .1-55
1.7.9 Successful Reconnections to Old Channels upon Inter-RAT Outgoing Cell Handover Failure per BSC
....................................................................................................................................................................1-56
1.7.10 Failed External Incoming Cell Handovers per BSC (Illegal Message)............................................ 1-58
1.7.11 Failed External Incoming Cell Handovers per BSC (Channel Unavailable)....................................1-59
1.7.12 Failed External Incoming Cell Handovers per BSC (Requested Terrestrial Resource Unavailable)1-59
1.7.13 Failed External Incoming Cell Handovers per BSC (Terrestrial Resource Already Allocated) .......1-60
1.7.14 Failed External Incoming Cell Handovers per BSC (Equipment Failure) .......................................1-61
1.7.15 Failed External Incoming Cell Handovers per BSC (Timer Expired)..............................................1-62
1.7.16 Failed External Incoming Cell Handovers per BSC (Other Causes)................................................1-63 1.7.17 CHAN ACT NACK Messages Sent by BTS in External Incoming Cell Handover Procedure per BSC
....................................................................................................................................................................1-64
1.7.18 Channel Activation Timeouts in External Incoming Cell Handover Procedure per BSC ................1-65
1.8 Handover Attempt Measurement per BSC..................................................................................................1-65
1.8.1 Overview............................................................................................................................................1-65
1.8.2 Attempted Handovers per BSC (Uplink Signal Quality) ................................................................... 1-66
1.8.3 Attempted Handovers per BSC (Downlink Signal Quality)...............................................................1-67
1.8.4 Attempted Handovers per BSC (Uplink Signal Strength)..................................................................1-67
1.8.5 Attempted Handovers per BSC (Downlink Signal Strength) ............................................................. 1-68
1.8.6 Attempted Handovers per BSC (Timing Advance) ........................................................................... .1-69
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Contents
HUAWEI BSC6000 Base Station Controller
Performance Counter Reference
iv Huawei Technologies Proprietary Issue 03 (2007-05-09)
1.8.7 Attempted Handovers per BSC (Better Cell)....................................................................... ..............1-69
1.8.8 Attempted Handovers per BSC (Load) ...................................................................... ........................1-70
1.8.9 Attempted Handovers per BSC (Rapid Level Drop)..........................................................................1-71
1.8.10 Attempted Handovers per BSC (MSC Intervention).................................................. ......................1-71
1.8.11 Attempted Handovers per BSC (OM Intervention)............................................................. .............1-72
1.8.12 Attempted Handovers per BSC (Other Causes) ............................................................................ ...1-72
1.8.13 Attempted Handovers per BSC (Underlaid Subcell to Overlaid Subcell).......... ..............................1-73
1.8.14 Attempted Handovers per BSC (Overlaid Subcell to Underlaid Subcell).......... ..............................1-74
1.8.15 Attempted Handovers per BSC (Intra-Cell TCHF-to-TCHH Handover).........................................1-74
1.8.16 Attempted Handovers per BSC (Directed Retry).............................................................................1-75
1.9 Handover Success Measurement per BSC................................................................. .................................1-76
1.9.1 Overview............................................................................................................................................1-76
1.9.2 Successful Handovers per BSC (Uplink Signal Quality)...................................................................1-77
1.9.3 Successful Handovers per BSC (Downlink Signal Quality) .............................................................. 1-77
1.9.4 Successful Handovers per BSC (Uplink Signal Strength) ................................................................. 1-78
1.9.5 Successful Handovers per BSC (Downlink Signal Strength).............................................................1-78
1.9.6 Successful Handovers per BSC (Timing Advance)............................................................................1-79
1.9.7 Successful Handovers per BSC (Better Cell).....................................................................................1-79
1.9.8 Successful Handovers per BSC (Load)..............................................................................................1-80
1.9.9 Successful Handovers per BSC (Rapid Level Drop) ........................................................................ .1-80
1.9.10 Successful Handovers per BSC (MSC Intervention) ............................................................ ...........1-81
1.9.11 Successful Handovers per BSC (OM Intervention) ............................................................ .............1-82
1.9.12 Successful Handovers per BSC (Other Causes)............................................................................ ...1-82 1.9.13 Successful Handovers per BSC (Underlaid Subcell to Overlaid Subcell) .......................................1-83
1.9.14 Successful Handovers per BSC (Overlaid Subcell to Underlaid Subcell) .......................................1-83
1.9.15 Successful Handovers per BSC (Intra-Cell TCHF-to-TCHH Handover) ........................................1-84
1.9.16 Successful Handovers per BSC (Directed Retry).............................................................................1-84
1.10 Inter-Frequency-Band Measurement per BSC.................................................................. ........................1-86
1.10.1 Overview..........................................................................................................................................1-86
1.10.2 Attempted Internal Inter-Cell Handovers per BSC (900/850 to 1800/1900).................................... 1-87
1.10.3 Attempted Internal Inter-Cell Handovers per BSC (1800/1900 to 900/850).................................... 1-87
1.10.4 Successful Internal Inter-Cell Handovers per BSC (900/850 to 1800/1900) ...................................1-88
1.10.5 Successful Internal Inter-Cell Handovers per BSC (1800/1900 to 900/850) ...................................1-89
1.10.6 Attempted Incoming BSC Handovers per BSC (900/850 to 1800/1900).........................................1-90
1.10.7 Attempted Incoming BSC Handovers per BSC (1800/1900 to 900/850).........................................1-90
1.10.8 Successful Incoming BSC Handovers per BSC (900/850 to 1800/1900) ........................................1-91
1.10.9 Successful Incoming BSC Handovers per BSC (1800/1900 to 900/850) ........................................1-92
1.10.10 Attempted Outgoing BSC Handovers per BSC (900/850 to 1800/1900).......................................1-93
1.10.11 Attempted Outgoing BSC Handovers per BSC (1800/1900 to 900/850) .......................................1-93
1.10.12 Successful Outgoing BSC Handovers per BSC (900/850 to 1800/1900).......................................1-94
1.10.13 Successful Outgoing BSC Handovers per BSC (1800/1900 to 900/850).......................................1-95
1.11 Handover KPI Measurement per BSC....................................................................................................... 1-96
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference Contents
Issue 03 (2007-05-09) Huawei Technologies Proprietary v
1.11.1 Overview..........................................................................................................................................1-96
1.11.2 Internal Intra-Cell Handover Requests per BSC................................................................ ..............1-98
1.11.3 Internal Intra-Cell Handover Commands per BSC ........................................................... ...............1-98
1.11.4 Successful Internal Intra-Cell Handovers per BSC..........................................................................1-99
1.11.5 Internal Outgoing Cell Handover Requests per BSC..................................................................... ..1-99
1.11.6 Internal Outgoing Cell Handover Commands per BSC............................................................. ....1-100
1.11.7 Successful Internal Outgoing Cell Handovers per BSC.................................................................1-101
1.11.8 Internal Incoming Cell Handover Requests per BSC.....................................................................1-101
1.11.9 Internal Incoming Cell Handover Commands per BSC................................................................. 1-102
1.11.10 Successful Internal Incoming Cell Handovers per BSC...............................................................1-103
1.11.11 External Outgoing Cell Handover Requests per BSC ................................................................ ..1-103
1.11.12 External Outgoing Cell Handover Commands per BSC .............................................................. 1-104
1.11.13 Successful External Outgoing Cell Handovers per BSC..............................................................1-105
1.11.14 External Incoming Cell Handover Requests per BSC..................................................................1-105
1.11.15 External Incoming Cell Handover Commands per BSC..............................................................1-106
1.11.16 Successful External Incoming Cell Handovers per BSC........................................... ...................1-107
1.11.17 Dual-Band Handover Requests per BSC...................................................................................... 1-107
1.11.18 Successful Dual-Band Handovers per BSC .................................................................... .............1-108
1.11.19 External Outgoing Cell Handover Requests per BSC (Inter-Signaling-Point Handover)............1-108
1.11.20 Failed External Outgoing Cell Handovers per BSC (Inter-Signaling-Point Handover)............... 1-109
1.11.21 External Outgoing Cell Handover Commands per BSC (Inter-Signaling-Point Handover) ........1-109
1.11.22 Internal Handover Success Ratio per BSC...................................................................................1-109
1.11.23 Intra-BSC Radio Handover Success Ratio per BSC ............................................................ ........1-110 1.11.24 External Outgoing Cell Handover Success Ratio per BSC .......................................................... 1-110
1.11.25 External Outgoing Cell Radio Handover Success Ratio per BSC................................................ 1-111
1.11.26 External Incoming Cell Handover Success Ratio per BSC............................. ............................. 1-111
1.11.27 External Incoming Cell Radio Handover Success Ratio per BSC ............................................... 1-112
1.11.28 Handover Success Ratio per BSC.................................................................... ............................ 1-112
1.11.29 Radio Handover Success Ratio per BSC......................................................................................1-113
1.11.30 Dual-Band Handover Success Ratio per BSC..............................................................................1-113
2 SCCP Measurement...................................................................................................................2-1
2.1 Overview of SCCP Measurement ........................................................... ...................................................... 2-2 2.2 SCCP OSP Measurement ........................................................ ................................................................ ......2-2
2.2.1 Overview of SCCP OSP Measurement ................................................................... .............................2-2
2.2.2 Number of Sent UDT Messages ............................................................. .............................................2-3
2.2.3 Number of Received UDT Messages...................................................................................................2-3
2.2.4 Number of Sent XUDT Messages........................................................................................................2-4
2.2.5 Number of Received XUDT Messages................................................................................................2-4
2.2.6 Number of Sent CR Messages ................................................................. ............................................2-4
2.2.7 Number of Received CR Messages......................................................................................................2-5
2.2.8 Number of Sent CREF Messages.........................................................................................................2-5
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Contents
HUAWEI BSC6000 Base Station Controller
Performance Counter Reference
vi Huawei Technologies Proprietary Issue 03 (2007-05-09)
2.2.9 Number of Received CREF Messages.................................................................................................2-6
2.2.10 Ratio of CREF by Peer SCCP............................................................................................................2-6
2.2.11 Ratio of CREF by Local SCCP..........................................................................................................2-6
2.2.12 Received CC Messages......................................................................................................................2-7
2.2.13 Sent CC Messages..............................................................................................................................2-7
2.2.14 Sent DT1 Messages............................................................................................................................2-8
2.2.15 Received DT1 Messages....................................................................................................................2-8
2.2.16 Sent RLSD Messages.........................................................................................................................2-8
2.2.17 Received RLSD Messages.................................................................................................................2-9
2.2.18 Sent RLC Messages ................................................................ ........................................................... 2-9
2.2.19 Received RLC Messages ................................................................... .............................................. 2-10
3 MTP3 Measurement ..................................................................................................................3-1
3.1 Overview of MTP3 Measurement.................................................................................................................3-2
3.2 MTP3 Link Measurement ................................................................ ............................................................. 3-2
3.2.1 Overview..............................................................................................................................................3-2
3.2.2 In-Service Duration of MTP3 Link......................................................................................................3-3
3.2.3 Out-of-Service Duration of MTP3 Link...............................................................................................3-4
3.2.4 Duration of MTP3 Link Fault ..................................................................... .........................................3-4
3.2.5 Duration of MTP3 Link Local Inhibition.............................................................................................3-4
3.2.6 Duration of MTP3 Link Remote Inhibition ........................................................................ .................3-5
3.2.7 Duration of MTP3 Link Remote Processor Fault ............................................................. ...................3-5
3.2.8 Duration of MTP3 Link Congestion ...................................................................... ..............................3-6
3.2.9 Failures of MTP3 Link for All Reasons...............................................................................................3-6
3.2.10 MTP3 Link Local Inhibitions .................................................................. ..........................................3-6
3.2.11 MTP3 Link Remote Inhibitions .................................................................... .....................................3-7
3.2.12 MTP3 Link Remote Processor Failures ........................................................... ..................................3-7
3.2.13 MTP3 Link Local Switchovers ............................................................ ..............................................3-8
3.2.14 MSUs Sent on MTP3 Link.................................................................................................................3-8
3.2.15 MSUs Received on MTP3 Link.........................................................................................................3-9
3.2.16 MTP3 Link Congestions .............................................................. ...................................................... 3-9
3.2.17 Discarded MSUs During Link Congestion .................................................................... ....................3-9
3.2.18 Transfer Inhibition Messages Received on MTP3 Link...................................................................3-10 3.2.19 Octets in SIFs or SIOs Sent on MTP3 Link.....................................................................................3-10
3.2.20 Octets in SIFs and SIOs Received by MTP3 Link...........................................................................3-11
3.2.21 64 kbit/s Timeslots Occupied by a Signaling Link...........................................................................3-11
3.2.22 Ratio of Transmit Bandwidth to Total Bandwidth ................................................................... ........3-11
3.2.23 Ratio of Receive Bandwidth to Total Bandwidth........................ ..................................................... 3-12
3.2.24 Bytes of MTP2 Message Head in MSU Messages on MTP3 Link..................................................3-12
4 LAPD Measurement ..................................................................................................................4-1
4.1 Overview of LAPD Measurement.................................................................................................................4-2
4.2 LAPD Link Measurement ............................................................... .............................................................. 4-2
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference Contents
Issue 03 (2007-05-09) Huawei Technologies Proprietary vii
4.2.1 Overview..............................................................................................................................................4-2
4.2.2 SABME Frames Sent on LAPD Link ..................................................................... .............................4-3
4.2.3 SABME Frames Received on LAPD Link ........................................................... ...............................4-3
4.2.4 REJ Frames Sent on LAPD Link.......................................................................... ...............................4-4
4.2.5 REJ Frames Received on LAPD Link .................................................................... .............................4-4
4.2.6 RNR Frames Sent on LAPD Link........................................................................................................4-5
4.2.7 RNR Frames Received on LAPD Link................................................................................................4-5
4.2.8 I Frames Resent on LAPD Link...........................................................................................................4-5
4.2.9 Incorrect I Frames Received on LAPD Link ...................................................................... .................4-6
4.2.10 I Frames Received on LAPD Link from Application Layer .............................................................. 4-6
4.2.11 I Frames Sent on LAPD Link.............................................................................................................4-7
4.2.12 I Frames Received by LAPD Link.....................................................................................................4-7
4.2.13 I Frames Discarded by LAPD Link ............................................................... ....................................4-7
4.2.14 UA Frames Sent on LAPD Link .......................................................................... ..............................4-8
4.2.15 UA Frames Received by LAPD Link.................................................................................................4-8
4.2.16 UI Frames Received by LAPD Link..................................................................................................4-9
5 System Load Measurement ......................................................................................................5-1
5.1 Overview of System Load Measurement .......................................................................... ............................5-2
5.2 CPU Usage Measurement ....................................................... ................................................................ ......5-2
5.2.1 Overview..............................................................................................................................................5-2
5.2.2 Mean CPU Usage.................................................................................................................................5-2
5.2.3 Maximum CPU Usage .............................................................. ........................................................... 5-3
6 BTSM Management...................................................................................................................6-1
6.1 Overview of BTSM Measurement ..................................................................... ...........................................6-2
6.2 BTS State Measurement per BTS..................................................................................................................6-2
6.2.1 Overview..............................................................................................................................................6-2
6.2.2 Successful BTS Initializations ...................................................................... .......................................6-3
6.2.3 Failed BTS Initializations ................................................................ .................................................... 6-3
6.2.4 BTS OML Disruption Duration ..................................................................... ......................................6-4
6.2.5 BTS Out-of-Service Duration ..................................................................... .........................................6-4
6.2.6 BTS Availability...................................................................................................................................6-4
6.2.7 BTS In-Service Duration ........................................................................... ..........................................6-5
6.3 BTS Configuration Measurement per BM Subrack ........................................................................... ...........6-5
6.3.1 Overview..............................................................................................................................................6-5
6.3.2 Activated BTSs ............................................................. ....................................................................... 6-6
6.3.3 Available BTSs.....................................................................................................................................6-6
6.4 Cell State Measurement per Cell...................................................................................................................6-6
6.4.1 Overview..............................................................................................................................................6-6
6.4.2 Successful Cell Initializations..............................................................................................................6-7
6.4.3 Failed Cell Initializations.....................................................................................................................6-7
6.4.4 Cell BCCH Mutual Aid........................................................................................................................6-8
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Contents
HUAWEI BSC6000 Base Station Controller
Performance Counter Reference
viii Huawei Technologies Proprietary Issue 03 (2007-05-09)
6.4.5 Recoveries after Cell BCCH Mutual Aid.............................................................................................6-8
6.4.6 Cell Baseband Hopping Mutual Aid .................................................................. ..................................6-9
6.4.7 Recoveries After Cell Baseband Hopping Mutual Aid ............................................................. ...........6-9
6.4.8 Cell Out-of-Service Duration...............................................................................................................6-9
6.4.9 Cell Availability ............................................................. .................................................................... 6-10
6.4.10 Cell In-Service Duration ..................................................................... ............................................. 6-10
6.5 Cell Configuration Measurement per BM Subrack.....................................................................................6-11
6.5.1 Overview............................................................................................................................................6-11
6.5.2 Activated Cells...................................................................................................................................6-11
6.5.3 Available Cells .............................................................. ................................................................ .....6-11
6.6 TRX State Measurement per TRX................................................................... ........................................... 6-12
6.6.1 Overview............................................................................................................................................6-12
6.6.2 TRX Out-of-Service Duration............................................................................................................6-12
6.7 TRX Configuration Measurement per BM Subrack....................................................................................6-13
6.7.1 Overview............................................................................................................................................6-13
6.7.2 Activated TRXs..................................................................................................................................6-13
6.7.3 Available TRXs................................................................... ............................................................... 6-13
6.7.4 TRX Availability ............................................................ .................................................................... 6-14
6.8 CRC Error Measurement per BTS .................................................................. ............................................ 6-14
6.8.1 Overview............................................................................................................................................6-14
6.8.2 Duration of CRC Error on Ports 0 Through 23..................................................................................6-14
6.9 CRC Serious Error Measurement per BTS .............................................................. ...................................6-16
6.9.1 Overview............................................................................................................................................6-16 6.9.2 Duration of Serious CRC Error on Ports 0 Through 23 ................................................................... ..6-16
6.10 LAPD Link Measurement at the BTS .................................................................. .....................................6-18
6.10.1 Overview..........................................................................................................................................6-18
6.10.2 SABME Frames Sent by the BTS on LAPD Link.................................................................. .........6-18
6.10.3 SABME Frames Received by the BTS on LAPD Link ................................................................... 6-19
6.10.4 BTS-Sent Rejects to the LAPD Setup Requests ......................................................................... .....6-20
6.10.5 BTS-Received Rejects to the LAPD Setup Requests............................................. ..........................6-20
6.10.6 RNR Frames Sent by the BTS on LAPD Link.................................................................................6-21
6.10.7 RNR Frames Received by the BTS on LAPD Link.........................................................................6-21
6.10.8 I Frames Resent by the BTS on LAPD Link....................................................................................6-22
6.10.9 NRERR Frames Received by the BTS on LAPD Link....................................................................6-22
6.10.10 L3 Data Requests Received by BTS on LAPD Link ..................................................................... 6-23
6.10.11 I Frames Sent by the BTS on LAPD Link......................................................................................6-23
6.10.12 I Frames Received by the BTS on LAPD Link..............................................................................6-24
6.10.13 Queue Overflows of Messages Sent by BTS on LAPD Link ........................................................ 6-24
6.10.14 Erroneous Long Frames Received by BTS Physical Layer on LAPD Link...................................6-25
6.10.15 Erroneous Octet Received by BTS Physical Layer on LAPD Link...............................................6-25
6.10.16 Discarded Series Received by BTS Physical Layer on LAPD Link..............................................6-26
6.10.17 Number of Times the BTS Receives CRC Errors on LAPD Link .................................................6-26
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6.10.18 L1 and L2 Overflows on LAPD Link of the BTS..........................................................................6-27
6.10.19 Total Frames Received by the BTS Physical Layer on LAPD Link ..............................................6-27
7 Resources Measurement...........................................................................................................7-1
7.1 Overview of Resources Measurement...........................................................................................................7-2 7.2 A Interface Circuit Measurement per DPC................................................................................... .................7-2
7.2.1 Overview..............................................................................................................................................7-2
7.2.2 Mean Number of Uninstalled Circuits on the A Interface................. ................................................... 7-3
7.2.3 Mean Number of Faulty Circuits on the A Interface........................................................................ ....7-3
7.2.4 Mean Number of Circuits in Maintenance State on the A Interface........................ .............................7-4
7.2.5 Mean Number of Blocked Circuits on the A Interface.........................................................................7-4
7.2.6 Mean Number of Idle Circuits on the A Interface................................................................................7-5
7.2.7 Mean Number of Busy Circuits on the A Interface..............................................................................7-5
7.2.8 Mean Number of Circuits with Uninstalled Peer Circuits on the A Interface ......................................7-6
7.3 TC Measurement per DPC .................................................................. .......................................................... 7-6
7.3.1 Overview..............................................................................................................................................7-6
7.3.2 Mean Number of Faulty TC Resources................................................................................................7-7
7.3.3 Mean Number of Idle TC Resources....................................................................................................7-7
7.3.4 Mean Number of Busy TC Resources..................................................................................................7-8
7.4 Pb Interface Circuit Measurement per PCU..................................................................................................7-8
7.4.1 Overview..............................................................................................................................................7-8
7.4.2 Mean Number of Faulty Circuits on the Pb Interface .................................................................. ........7-9
7.4.3 Mean Number of Blocked Circuits on the Pb Interface .................................................................... ...7-9
7.4.4 Mean Number of Idle Circuits on the Pb Interface ............................................................ ................7-10
7.4.5 Mean Number of Busy Circuits on the Pb Interface .............................................................. ............7-10
7.4.6 Mean Number of Circuits in Maintenance State on the Pb Interface................................................. 7-11
7.5 Ater Interface Circuit Measurement per BM Subrack.................................................................................7-11
7.5.1 Overview............................................................................................................................................7-11
7.5.2 Mean Number of Faulty Circuits on the Ater Interface......................................................................7-12
7.5.3 Mean Number of Idle Circuits on the Ater Interface..........................................................................7-12
7.5.4 Mean Number of Busy Circuits on the Ater Interface........................................................................7-13
8 MSC Measurement....................................................................................................................8-1
8.1 Overview of MSC Measurement...................................................................................................................8-2
8.2 MSC Measurement per DPC.........................................................................................................................8-2
8.2.1 Overview..............................................................................................................................................8-2
8.2.2 Number of MSC Resets ................................................................. ...................................................... 8-2
8.2.3 Number of Messages Received from MSC..........................................................................................8-3
9 CBC Measurement .....................................................................................................................9-1
9.1 Overview of CBC Measurement ...................................................................... ............................................. 9-2
9.2 CBC Measurement per BSC ................................................................. ........................................................ 9-2
9.2.1 Overview..............................................................................................................................................9-2
9.2.2 WRITE-REPLACE Requests Received by BSC ................................................................... ..............9-3
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9.2.3 KILL Requests Received by BSC........................................................................................................9-4
9.2.4 STATUS-CBCH-QUERY Requests Received by BSC...................... ..................................................9-4
9.2.5 STATUS-MESSAGE-QUERY Requests Received by BSC ................................................................ 9-4
9.2.6 SET-DRX Requests Received by BSC ............................................................................ ....................9-5
9.2.7 RESET Requests Received by BSC.....................................................................................................9-5
9.2.8 REPORT Responses to WRITE-REPLACE Requests.................................................................. .......9-5
9.2.9 REJECT Responses to WRITE-REPLACE Requests.......................................................................... 9-6
9.2.10 REPORT Responses to KILL Requests .................................................................. ...........................9-6
9.2.11 REJECT Responses to KILL Requests ................................................................... ...........................9-7
9.2.12 REPORT Responses to STATUS-CBCH-QUERY Requests ............................................................. 9-7
9.2.13 REJECT Responses to STATUS-CBCH-QUERY Requests .............................................................. 9-8
9.2.14 REPORT Responses to STATUS-MESSAGE-QUERY Requests......................................................9-8
9.2.15 REJECT Responses to STATUS-MESSAGE-QUERY Requests ......................................................9-9
9.2.16 REPORT Responses to SET-DRX Requests....................... ............................................................... 9-9
9.2.17 REJECT Responses to SET-DRX Requests............................................... ......................................9-10
9.2.18 RESTART-INDICATION Requests Sent from BSC................ ........................................................ 9-10
9.2.19 REJECT Responses to RESTART-INDICATION Requests ............................................................ 9-11
9.2.20 FAILURE-INDICATION Requests Sent from BSC....................................................................... .9-11
9.2.21 CBCH Loading Indications Received by BSC (Overflow)..............................................................9-12
9.2.22 CBCH Loading Indications Received by BSC (Underflow)............................................................9-12
9.2.23 WRITE-REPLACE Requests (WRITE Requests) Received by BSC..............................................9-12
9.2.24 REPORT Responses to WRITE-REPLACE Requests (WRITE Requests) .....................................9-13
9.2.25 REJECT Responses to WRITE-REPLACE Requests (WRITE Requests) ......................................9-13 9.2.26 WRITE-REPLACE Requests (REPLACE Requests) Received by BSC..................... ....................9-14
9.2.27 REPORT Responses to WRITE-REPLACE Requests (REPLACE Requests) ................................9-14
9.2.28 REJECT Responses to WRITE-REPLACE Requests (REPLACE Requests) .................................9-14
9.2.29 Mean Capacity of BSC Message Library.........................................................................................9-15
9.2.30 Disruptions of the BSC-CBC Connection........................................................................................9-15
10 PCU Measurement.................................................................................................................10-1
10.1 Overview of PCU Measurement ....................................................................... ........................................10-2
10.2 PCU Measurement per BSC......................................................................................................................10-2
10.2.1 Overview..........................................................................................................................................10-2 10.2.2 Total Messages Received from PCU................................................................................................ 10-2
10.3 PCU Measurement per PCU ................................................................... .................................................. 10-3
10.3.1 Overview..........................................................................................................................................10-3
10.3.2 Messages Received from a PCU......................................................................................................10-3
11 Paging Measurement.............................................................................................................11-1
11.1 Overview of Paging Measurement ........................................................................ .................................... 11-2
11.2 A Interface Paging Measurement............................................................................ ................................... 11-2
11.2.1 Overview of A Interface Paging Measurement ...................................................................... .......... 11-2
11.2.2 MSC-Initiated Paging Requests for CS Service...............................................................................11-3
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11.2.3 SGSN-Initiated Paging Requests for CS Service ........................................................................... ..11-3
11.2.4 SGSN-Initiated Paging Requests for PS Service........................................................................... ...11-4
11.2.5 Delivered to BTS for CS Service .......................................................................... ........................... 11-5
11.3 Abis Interface Paging Measurement..........................................................................................................11-6
11.3.1 Overview of Abis Interface Paging Measurement............................................................................ 11-6
11.3.2 Delivered Paging Messages for CS Service....................................................................... .............. 11-6
11.3.3 Delivered Paging Messages for PS Service ........................................................................ ............. 11-7
11.4 Measurement of Discarded Paging Messages due to Overload per LAPD ............................................... 11-8
11.4.1 Overview of Measurement of Discarded Paging Messages due to Overload per LAPD .................11-8
11.4.2 SM Pagings Discarded on LAPD Link ..................................................................... ....................... 11-9
11.4.3 CS Pagings Discarded on LAPD Link ....................................................................... ...................... 11-9
11.4.4 PS Pagings Discarded on LAPD Link..................................................................................... ......... 11-9
12 Call Measurement..................................................................................................................12-1
12.1 Overview of Call Measurement ..................................................................... ........................................... 12-3
12.2 Call Duration Measurement per BSC........................................................................................................12-4
12.2.1 Overview..........................................................................................................................................12-4
12.2.2 Mean Duration of Call Access ........................................................................... ..............................12-4
12.2.3 Mean Duration of Call Establishment..............................................................................................12-4
12.3 Flow Control Measurement per Cell .................................................................... .....................................12-5
12.3.1 Overview..........................................................................................................................................12-5
12.3.2 MSG DEL IND Messages Sent on Abis Interface ..................................................................... ......12-6
12.3.3 MSG CCCH LOAD IND (RACH) Messages Sent on Abis Interface .............................................12-6
12.3.4 MSG CCCH LOAD IND (PCH) Messages Sent on Abis Interface.................................................12-7
12.3.5 PACKET CCCH LOAD IND Messages Sent on Abis Interface................................. .....................12-7
12.3.6 MSG ABIS OVERLOAD (CCCH OVERLOAD) Messages Sent on Abis Interface......................12-8
12.3.7 MSG ABIS OVERLOAD (PROCESSOR OVERLOAD) Messages Sent on Abis Interface ..........12-8
12.3.8 LOAD IND Messages Sent on the A-Interface................................................................................12-9
12.3.9 Increases of Flow Control Levels ................................................................. ...................................12-9
12.3.10 Decreases of Flow Control Levels .......................................................................... .....................12-10
12.3.11 Ignored Trigger Events.................................................................................................................12-11
12.3.12 Highest Level Delays.................................................................... ............................................... 12-11
12.3.13 Paging Messages Discarded from the PCH Queue ................................................................... ...12-12 12.3.14 Maximum Seizure Ratio of PCH Paging Queue..........................................................................12-12
12.4 Short Message Measurement per Cell.....................................................................................................12-13
12.4.1 Overview........................................................................................................................................12-13
12.4.2 Uplink Point-to-Point Short Messages on SDCCH........................................................................ 12-13
12.4.3 Downlink Point-to-Point Short Messages on SDCCH........................................................ ...........12-14
12.4.4 Uplink Point-to-Point Short Messages on TCH.............................................................................12-14
12.4.5 Downlink Point-to-Point Short Messages on TCH ............................................................. ...........12-14
12.4.6 Total Uplink Point-to-Point Short Messages..................................................................................12-15
12.4.7 Total Downlink Point-to-Point Short Messages.............................................................................12-15
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12.4.8 Point-to-Point Short Messages on SDCCH....................................................................................12-15
12.4.9 Point-to-Point Short Messages on TCH.........................................................................................12-16
12.5 Call Drop Measurement per Cell.............................................................................................................12-16
12.5.1 Overview........................................................................................................................................12-16
12.5.2 Call Drop Sampled Measurement per Cell ...................................................................... ..............12-17
12.5.3 Call Drop Analyzed Measurement per Cell ........................................................................... ........12-22
12.6 Channel Activation Measurement per Cell............................................................................................. .12-30
12.6.1 Overview........................................................................................................................................12-30
12.6.2 SDCCH Connection Measurement per Cell...................................................................................12-30
12.6.3 TCH Connection Measurement per Cell........................................................................................12-33
12.6.4 Channel Activation Analyzed Measurement per Cell .................................................................... 12-37
12.7 Channel Seizure Measurement per TRX.................................................................................................12-42
12.8 Immediate Assignment Measurement per Cell........................................................................................12-45
12.8.1 Overview........................................................................................................................................12-45
12.8.2 Channel Requests per Cell ...................................................................... .......................................12-46
12.8.3 Immediate Assignment Commands per Cell..................................................................................12-47
12.8.4 Call Setup Indications per Cell ....................................................................... ...............................12-49
12.8.5 Rejects to Service Requests per Cell..............................................................................................12-51
12.8.6 Immediate Assignment Analyzed Measurement per Cell .............................................................. 12-52
12.9 Assignment Measurement per Cell..........................................................................................................12-55
12.9.1 Overview........................................................................................................................................12-55
12.9.2 Assignment Requests per Cell........................................................................................................12-55
12.9.3 Assignment Commands per Cell....................................................................................................12-58 12.9.4 Completed Assignments per Cell...................................................................................................12-59
12.9.5 Failed Assignments per Cell ........................................................... ............................................... 12-61
12.9.6 Mode Modify Commands per Cell .......................................................................... ......................12-63
12.9.7 Failed Mode Modify Attempts per Cell ............................................................................ .............12-65
12.9.8 Assignment Procedure Analyzed Measurement per Cell ............................................................... 12-67
12.10 Intra-Cell Handover Measurement per Cell ..................................................................... .....................12-70
12.10.1 Overview......................................................................................................................................12-70
12.10.2 Intra-Cell Handover Requests per Cell ................................................................ ........................12-71
12.10.3 Intra-Cell Handover Commands per Cell.....................................................................................12-73
12.10.4 Failed Intra-Cell Handovers per Cell ....................................................................... ....................12-74
12.10.5 Intra-Cell AMR Handover per Cell..............................................................................................12-80
12.10.6 Intra-Cell Handover Detection Messages Received by BSC per Cell..........................................12-82
12.10.7 Intra-Cell Handover Measurement per Cell ........................................................................ .........12-82
12.11 Incoming Internal Inter-Cell Handover Measurement per Cell.............................................................12-88
12.11.1 Overview......................................................................................................................................12-88
12.11.2 Incoming Internal Inter-Cell Handover Requests per Cell ........................................................... 12-89
12.11.3 Incoming Internal Inter-Cell Handover Responses per Cell......................................................... 12-91
12.11.4 Failed Incoming Internal Inter-Cell Handovers per Cell..............................................................12-92
12.11.5 Incoming Internal Inter-Cell Handover Detection Messages Received by BSC per Cell ............12-96
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12.11.6 Incoming Internal Inter-Cell Handover Analyzed Measurement per Cell................ ....................12-97
12.12 Outgoing Internal Inter-Cell Handover Measurement per Cell ............................................................. 12-99
12.12.1 Overview......................................................................................................................................12-99
12.12.2 Outgoing Internal Inter-Cell Handover Requests per Cell......................................................... 12-103
12.12.3 Outgoing Internal Inter-Cell Handover Commands per Cell ..................................................... 12-106
12.12.4 Failed Outgoing Internal Inter-Cell Handovers per Cell............................................................12-109
12.12.5 Outgoing Internal Inter-Cell Handover Measurement per Cell..................................................12-119
12.13 Incoming External Inter-Cell Handover Measurement per Cell..................................... .....................12-124
12.13.1 Overview....................................................................................................................................12-124
12.13.2 Incoming External Inter-Cell Handover Requests per Cell........................................................ 12-126
12.13.3 Incoming External Inter-Cell Handover Responses per Cell ..................................................... 12-128
12.13.4 Failed Incoming External Inter-Cell Handovers per Cell...........................................................12-129
12.13.5 Incoming External Inter-Cell Handover Detection Messages Received by BSC per Cell .........12-134
12.13.6 Incoming External Inter-Cell Handover Analyzed Measurement per Cell ................................12-135
12.14 Outgoing External Inter-Cell Handover Measurement per Cell .......................................................... 12-138
12.14.1 Overview....................................................................................................................................12-138
12.14.2 Outgoing External Inter-Cell Handover Requests per Cell........................................................12-142
12.14.3 Outgoing External Inter-Cell Handover Commands per Cell .................................................... 12-145
12.14.4 Failed Outgoing External Inter-Cell Handovers per Cell...........................................................12-149
12.14.5 Outgoing External Inter-Cell Handover Analyzed Measurement per Cell.................................12-162
12.15 Incoming Inter-RAT Inter-Cell Handover Measurement per Cell ....................................................... 12-168
12.15.1 Overview....................................................................................................................................12-168
12.15.2 Incoming Inter-RAT Inter-Cell Handover Requests per Cell ..................................................... 12-170 12.15.3 Incoming Inter-RAT Inter-Cell Handover Responses per Cell................................................... 12-171
12.15.4 Failed Incoming Inter-RAT Inter-Cell Handovers per Cell ........................................................ 12-172
12.15.5 Incoming Inter-RAT Inter-Cell Handover Analyzed Measurement per Cell.......... ....................12-174
12.16 Outgoing Inter-RAT Inter-Cell Handover Measurement per Cell ....................................................... 12-176
12.16.1 Overview....................................................................................................................................12-176
12.16.2 Outgoing Inter-RAT Inter-Cell Handover Requests per Cell ..................................................... 12-179
12.16.3 Outgoing Inter-RAT Inter-Cell Handover Commands per Cell .................................................12-180
12.16.4 Failed Outgoing Inter-RAT Inter-Cell Handovers per Cell ........................................................ 12-181
12.16.5 Outgoing Inter-RAT Inter-Cell Handover Analyzed Measurement per Cell ..............................12-187
12.17 GSM Cell to GSM Cell Incoming Handover Measurement................................................................ 12-191
12.17.1 Overview....................................................................................................................................12-191
12.17.2 Cell Incoming Handover Requests (Cell to Cell).......................................................................12-192
12.17.3 Failed Cell Incoming Handovers (Cell to Cell)..........................................................................12-192
12.17.4 Cell Incoming Handover Analyzed Measurement (Cell to Cell) ............................................... 12-193
12.17.5 Incoming Cell Handover Requests (Timing Advance) (Cell to Cell)......................................... 12-194
12.18 GSM Cell to GSM Cell Outgoing Handover Measurement................................................................12-194
12.18.1 Overview....................................................................................................................................12-194
12.18.2 Cell Outgoing Handover Commands (Cell to Cell) ................................................................... 12-195
12.18.3 Failed Cell Outgoing Handovers (Cell to Cell)..........................................................................12-197
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12.18.4 Cell Outgoing Handover Analyzed Measurement (Cell to Cell)................................... .............12-198
12.19 Measurement of MRs upon Handover Initiation per Cell ..................................................... ..............12-199
12.19.1 Overview....................................................................................................................................12-199
12.19.2 Measurement of MRs upon Handover Initiation (Receiving Quality) per Cell .........................12-200
12.19.3 Mean Uplink Receiving Level during Handover Initiation per Cell..........................................12-201
12.19.4 Mean Uplink Receiving Quality during Handover Initiation per Cell .......................................12-202
12.19.5 Concentric Cell Handover Initiation MR Analyzed Measurement (Receiving Level) per Cell .12-203
12.19.6 Concentric Cell Handover Initiation MR Analyzed Measurement (Timing Advance) per Cell.12-204
12.20 KPI Measurement per Cell..................................................................................................................12-205
12.20.1 Overview....................................................................................................................................12-205
12.20.2 Immediate Assignment Requests .................................................................... ...........................12-206
12.20.3 Immediate Assignment Commands............................................................................................12-207
12.20.4 SDCCH Seizure Requests..........................................................................................................12-207
12.20.5 Failed SDCCH Seizures due to Busy SDCCH...........................................................................12-208
12.20.6 Successful SDCCH Seizures......................................................................................................12-208
12.20.7 Traffic Volume on SDCCH................................................................... .....................................12-209
12.20.8 Traffic Volume on SDCCH................................................................... .....................................12-210
12.20.9 Available SDCCHs.....................................................................................................................12-210
12.20.10 Configured SDCCHs................................................................................................................12-210
12.20.11 TCH Seizure Requests (Signaling Channel) .................................................................. .......... 12-211
12.20.12 Failed TCH Seizures due to Busy TCH (Signaling Channel) .................................................. 12-211
12.20.13 Successful TCH Seizures (Signaling Channel) ..................................................................... ...12-212
12.20.14 Call Drops on TCH (Signaling Channel) ...................................................................... ...........12-212 12.20.15 Traffic Volume on TCH (Signaling Channel)........................................................................... 12-213
12.20.16 TCH Seizure Requests (Traffic Channel).............................................................................. ...12-213
12.20.17 Failed TCH Seizures due to Busy TCH (Traffic Channel)........................................ ...............12-214
12.20.18 Successful TCH Seizures (Traffic Channel) ........................................................................... .12-214
12.20.19 Call Drops on TCH in Stable State (Traffic Channel)..............................................................12-214
12.20.20 TCH Seizure Requests in TCH Handovers (Traffic Channel)..................................................12-215
12.20.21 Failed TCH Seizures in TCH Handovers due to Busy TCH (Traffic Channel)........................12-216
12.20.22 Successful TCH Seizures in TCH Handovers (Traffic Channel) .............................................12-216
12.20.23 Call Drops in TCH Handovers (Traffic Channel) .................................................................... 12-217
12.20.24 Traffic Volume on TCH (Traffic Channel)...... ..................................................................... ....12-217
12.20.25 Available TCHs..................................................................... ................................................... 12-218
12.20.26 Configured TCHs.....................................................................................................................12-218
12.20.27 Dual-Band Handover Requests ...................................................................... ..........................12-218
12.20.28 Successful Dual-Band Handovers............................................................................................12-219
12.21 Calls Discarded due to Overload per LAPD ................................................................ .......................12-221
12.21.1 Overview....................................................................................................................................12-221
12.21.2 Random Access Requests Discarded on LAPD ................................................................... ......12-221
13 MR Measurement...................................................................................................................13-1
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13.1 Overview of MR Measurement.................................................................................................................13-3
13.2 Number of MRs per Cell...........................................................................................................................13-3
13.2.1 Overview of Number of MRs per Cell.............................................................................................13-3
13.2.2 Sampled MRs per Cell .................................................................. ................................................... 13-4
13.2.3 Analyzed MRs per Cell....................................................................................................................13-5
13.3 Interference Band Measurement per TRX.................................................................................................13-6
13.3.1 Overview of Interference Band Measurement per TRX .................................................................. 13-6
13.3.2 Sampled Measurement of Interference Band per TRX.................................................................... 13-7
13.3.3 Analyzed Measurement of Interference Band per TRX................................................................... 13-8
13.4 Power Control Messages per Cell ........................................................................ ...................................13-10
13.4.1 Overview of Power Control Messages per Cell ................................................................ .............13-10
13.4.2 Number of Power Control Messages per Cell................................................................................13-11
13.4.3 Sampled Power Rank During Power Control per Cell.............................. .....................................13-12
13.4.4 Analyzed Power Rank During Power Control per Cell............................. .....................................13-12
13.4.5 Sampled Level of Power Control Signals per Cell........................................................... ..............13-13
13.4.6 Analyzed Level of Power Control Signals per Cell ....................................................................... 13-14
13.4.7 Sampling Quality of Power Control Signals per Cell ................................................................. ...13-14
13.4.8 Analyzed Quality of Power Control Signals per Cell.....................................................................13-15
13.4.9 Sampled Duration of Maximum Power per Cell............................................................................13-15
13.4.10 Analyzed Duration of Maximum Power per Cell.........................................................................13-16
13.4.11 Distance Between MS and BTS per Cell ................................................................ .....................13-17
13.4.12 Maximum Distance Between MS and BTS per Cell....................................................................13-17
13.4.13 Number of Power Control Messages per Cell..............................................................................13-18 13.4.14 Mean Distance Between MS and BTS.........................................................................................13-18
13.5 Neighbor Cell Level Measurement per Cell............................................................................................13-18
13.5.1 Overview of Neighbor Cell Level Measurement per Cell..............................................................13-18
13.5.2 Strength of Signals in Neighbor Cells............................................................................................13-19
13.5.3 Number of MRs of Neighbor Cells................................................................................................13-19
13.5.4 Mean Strength of Signals in Neighbor Cells..................................................................................13-20
13.6 TCHF Receive Level Measurement per TRX................................................................. ........................13-20
13.7 TCHH Receive Level Measurement per TRX.........................................................................................13-28
13.8 Receive Quality Measurement per TRX .............................................................. ...................................13-36
13.9 Uplink-and-Downlink Balance Measurement per TRX.............................................................. ............13-39
13.10 Number of MRs Based on TA per TRX ........................................................... .....................................13-41
13.11 Radio Link Failure Measurement per TRX......... ..................................................................... .............13-43
13.11.1 Overview of Radio Link Failure Measurement per TRX................... .......................................... 13-43
13.11.2 Uplink and Downlink Level During Radio Link Failure per TRX...............................................13-43
13.11.3 Mean Uplink and Downlink Level During Radio Link Failure per TRX ....................................13-44
13.11.4 Uplink and Downlink Quality During Radio Link Failure per TRX............................................ 13-45
13.11.5 Mean Uplink and Downlink Quality During Radio Link Failure per TRX..................................13-46
13.11.6 TA During Radio Link Failure per TRX .................................................................... ..................13-47
13.11.7 Mean TA During Radio Link Failure per TRX ..................................................................... .......13-47
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Performance Counter Reference
xvi Huawei Technologies Proprietary Issue 03 (2007-05-09)
13.11.8 Sampled Radio Link Failures per TRX........................................................................................13-48
13.12 Radio Link Failure Measurement based on TA per TRX ................................................................... ...13-49
13.13 RQI Measurement based on TA per TRX..............................................................................................13-51
13.13.1 Overview of RQI Measurement based on TA per TRX ............................................................... 13-51
13.13.2 Sampled RQI based on TA per TRX......................................................... ...................................13-51
13.13.3 Analyzed RQI based on TA per TRX........................................................ ...................................13-54
14 Channel Measurement ..........................................................................................................14-1
14.1 Overview of Channel Measurement..........................................................................................................14-3
14.2 Channel Configuration Measurement per Cell..........................................................................................14-3
14.2.1 Overview..........................................................................................................................................14-3
14.2.2 Sampled Measurement of Initially Configured Channels ................................................................ 14-4
14.2.3 Analyzed Measurement of Dynamically Configured Channels ....................................................... 14-6
14.2.4 Analyzed Measurement of Available Channels............................................................................ ..14-12
14.2.5 SDCCH Availability.......................................................................................................................14-18
14.2.6 TCH Availability .......................................................... .................................................................. 14-19
14.2.7 Analyzed Measurement of Initially Configured Channels ............................................................. 14-19
14.3 Channel Conversion Measurement per Cell............................................................................................14-22
14.3.1 Overview........................................................................................................................................14-22
14.3.2 Channel Conversion Requests (TCHF-TCHH)..............................................................................14-23
14.3.3 Successful Channel Conversions (TCHF-TCHH) ................................................................ .........14-23
14.3.4 Channel Conversion Requests (TCHH-TCHF)..............................................................................14-24
14.3.5 Successful Channel Conversions (TCHH-TCHF) ......................................................................... 14-25
14.3.6 Number of Channel Conversions (TCH-SDCCH).........................................................................14-26
14.3.7 Number of Channel Conversions (SDCCH-TCH).........................................................................14-26
14.4 Channel Busy Duration Measurement per Cell.......................................................................................14-27
14.4.1 Overview........................................................................................................................................14-27
14.4.2 Busy State Duration of All Channels (SDCCH/TCHF/TCHH) ..................................................... 14-27
14.4.3 Mean Duration of Busy State for All Channels (SDCCH/TCHF/TCHH)......................................14-28
14.5 Measurement of Maximum Busy Channels per Cell...............................................................................14-29
14.6 Channel State Measurement per Cell ................................................................. .....................................14-30
14.6.1 Overview........................................................................................................................................14-30
14.6.2 Mean Number of Busy Signaling Channels (SDCCH/TCHF/TCHH)........... ................................14-31 14.6.3 Mean Number of Busy TCHs (TCHF/TCHH).............................. ................................................. 14-32
14.6.4 Mean Number of Blocked Channels.............. ..................................................................... ...........14-33
14.6.5 Mean Number of Idle Channels .......................................................................... ...........................14-34
14.6.6 Mean Number of Busy TCHs (Overlaid Subcell)........... ............................................................... 14-35
14.6.7 Mean Number of Busy TCHs (Underlaid Subcell)............ ............................................................ 14-35
14.6.8 Mean Number of Busy Signaling Channels (SDCCH/TCHF/TCHH)........... ................................14-36
14.6.9 Mean Number of Busy TCHs (TCHF/TCHH).............................. ................................................. 14-37
14.7 Channel Assignment Request Measurement per Cell........................................... ...................................14-38
14.7.1 Overview........................................................................................................................................14-38
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14.7.2 Channel Assignment Requests in Immediate Assignment Procedure (SDCCH/TCHF/TCHH/TCH)14-
38
14.7.3 Channel Assignment Requests in Assignment Procedure (TCHF/TCHH/TCH) ...........................14-40
14.7.4 Channel Assignment Requests in Internal Intra-Cell Handover Procedure
(SDCCH/TCHF/TCHH/TCH) .................................................................... .............................................. 14-41 14.7.5 Channel Assignment Requests in Incoming Internal Inter-Cell Handover Procedure
(SDCCH/TCHF/TCHH/TCH) .................................................................... .............................................. 14-42
14.7.6 Channel Assignment Requests in Incoming External Inter-Cell Handover Procedure
(SDCCH/TCHF/TCHH/TCH) .................................................................... .............................................. 14-44
14.7.7 Channel Assignment Requests (SDCCH) ......................................................................... .............14-45
14.7.8 Channel Assignment Requests (TCHF) .................................................................. .......................14-46
14.7.9 Channel Assignment Requests (TCHH).........................................................................................14-46
14.7.10 Channel Assignment Requests (TCH) ................................................................. ........................14-47
14.8 Channel Assignment Success Measurement per TRX.............................................................................14-47
14.8.1 Overview........................................................................................................................................14-47
14.8.2 Successful Channel Assignments in Immediate Assignment Procedure (SDCCH/ TCHF/TCHH)14-48
14.8.3 Successful Channel Assignments in Assignment Procedure (TCHF/TCHH) ................................14-50
14.8.4 Successful Channel Assignments in Internal Intra-Cell Handover Procedure (SDCCH/TCHF/TCHH)
..................................................................................................................................................................14-51
14.8.5 Successful Channel Assignments in Incoming Internal Inter-Cell Handover Procedure
(SDCCH/TCHF/TCHH)................................................................... ........................................................ 14-52
14.8.6 Successful Channel Assignments in Incoming External Inter-Cell Handover Procedure (SDCCH/
TCHF/TCHH)...........................................................................................................................................14-53
14.8.7 Successful Channel Assignments (SDCCH)..................................................................................14-54
14.8.8 Successful Channel Assignments (TCHF)................................................................ .....................14-54
14.8.9 Successful Channel Assignments (TCHH) ....................................................................... .............14-55
14.8.10 Successful Channel Assignments (TCH) .......................................................................... ...........14-55
14.9 Channel Assignment Failure Measurement per Cell ...................................................................... .........14-56
14.9.1 Overview........................................................................................................................................14-56
14.9.2 Channel Assignment Failures (All Channels Busy or Channels Unconfigured) in Immediate
Assignment Procedure (SDCCH) ................................................................... ..........................................14-57
14.9.3 Channel Assignment Failures (All Channels Busy or Channels Unconfigured) in Immediate
Assignment Procedure (TCHF) ............................................................................ ....................................14-58
14.9.4 Channel Assignment Failures (All Channels Busy or Channels Unconfigured) in Immediate
Assignment Procedure (TCHH)................................................................................................................14-59
14.9.5 Channel Assignment Failures (All Channels Busy or Channels Unconfigured) in Assignment
Procedure (TCHF/TCHH) ............................................................... ......................................................... 14-59
14.9.6 Channel Assignment Failures (All Channels Busy or Channels Unconfigured) in Internal Intra-Cell
Handover Procedure (SDCCH).................................................................................................................14-60
14.9.7 Channel Assignment Failures (All Channels Busy or Channels Unconfigured) in Internal Intra-Cell
Handover Procedure (TCHF/TCHH)........................................................................................................14-61
14.9.8 Channel Assignment Failures (All Channels Busy or Channels Unconfigured) in Incoming Internal
Inter-Cell Handover Procedure (SDCCH) .............................................................. ..................................14-62
14.9.9 Channel Assignment Failures (All Channels Busy or Channels Unconfigured) in Incoming Internal
Inter-Cell Handover Procedure (TCHF/ TCHH)............................................................... ........................14-62
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Performance Counter Reference
xviii Huawei Technologies Proprietary Issue 03 (2007-05-09)
14.9.10 Channel Assignment Failures (All Channels Busy or Channels Unconfigured) in Incoming External
Inter-Cell Handover Procedure (SDCCH) .............................................................. ..................................14-63
14.9.11 Channel Assignment Failures (All Channels Busy or Channels Unconfigured) in Incoming External
Inter-Cell Handover Procedure (TCHF/ TCHH)............................................................... ........................14-64
14.9.12 Channel Assignment Failures (All Channels Busy or Channels Unconfigured) (SDCCH)......... 14-65 14.9.13 Channel Assignment Failures (All Channels Busy or Channels Unconfigured) (TCHF) ............14-65
14.9.14 Channel Assignment Failures (All Channels Busy or Channels Unconfigured) (TCHH) ...........14-66
14.9.15 Channel Assignment Failures (All Channels Busy or Channels Unconfigured) (TCH) ..............14-67
14.10 Channel Assignment Concentric Cell Measurement per Cell ............................................................... 14-68
14.10.1 Overview......................................................................................................................................14-68
14.10.2 Channel Assignment Requests of Concentric Cell...................................................... .................14-69
14.10.3 TCH Assignment Requests of Concentric Cell .................................................................. ..........14-69
14.10.4 Assignment Requests of Concentric Cell in Incoming Internal Inter-Cell Handover Procedure (TCH)
..................................................................................................................................................................14-70
14.10.5 Channel Assignment Requests in Incoming External Inter-Cell Handover Procedure (TCH).....14-71
14.10.6 Channel Assignment Overflows (TCH) (Underlaid Subcell Preferred or Overlaid Subcell Preferred)
..................................................................................................................................................................14-72
14.10.7 Channel Assignment Overflows in Concentric Cell in Incoming Internal Inter-Cell Handover
Procedure (TCH).......................................................................................................................................14-73
14.10.8 Channel Assignment Overflows in Concentric Cell in Incoming External Inter-Cell Handover
Procedure (TCH).......................................................................................................................................14-73
14.10.9 Channel Assignment Overflows in Concentric Cell (TCH)......................................................... 14-74
14.10.10 Channel Assignment Overflows in Concentric Cell (SDCCH)..................................................14-75
14.10.11 Channel Assignment Overflows in Concentric Cell (TCHF) ..................................................... 14-75
14.10.12 Channel Assignment Overflows in Concentric Cell (TCHH).................................................... 14-76
14.10.13 Failed Handovers from Underlaid Subcell to Overlaid Subcell due to Busy Channels in Overlaid
Subcell .......................................................... ...................................................................... ......................14-77
14.10.14 Failed Handovers from Overlaid Subcell to Underlaid Subcell due to Busy Channels in Underlaid
Subcell .......................................................... ...................................................................... ......................14-77
14.11 Channel Assignment Queue Measurement per Cell ..................................................................... .........14-78
14.11.1 Overview......................................................................................................................................14-78
14.11.2 Maximum Queue Length ................................................................ ............................................. 14-78
14.11.3 Total Queue Length......................................................................................................................14-79
14.11.4 Sampled Queuings .............................................................. ......................................................... 14-79
14.11.5 Total Queuing Duration................................................................................................................14-79
14.11.6 Channel Assignment Queue Measurement................................................................................... 14-80
14.11.7 Mean Queue Length.....................................................................................................................14-81
14.11.8 Mean Queuing Duration...............................................................................................................14-82
14.11.9 Failed Queuings ....................................................... .................................................................... 14-82
14.12 Channel Assignment GPRS Measurement per Cell ..................................................................... .........14-83
14.12.1 Overview......................................................................................................................................14-83
14.12.2 Requests for TCH from the PCU ......................................................................... ........................14-83
14.12.3 Successful TCH Requests from the PCU.....................................................................................14-84
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Performance Counter Reference Figures
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Figures
Figure 2-1 SCCP Measurement..........................................................................................................................2-3
Figure 3-1 MTP3 Measurement .............................................................. ........................................................... 3-3
Figure 4-1 LAPD link measurement ............................................................. ..................................................... 4-3
Figure 11-1 MSC-initiated paging procedure for CS service ........................................................................... 11-3 Figure 11-2 SGSN-initiated paging procedure for CS service ................................................................ .........11-4
Figure 11-3 SGSN-initiated paging procedure for PS service..........................................................................11-5
Figure 11-4 BSC-delivered CS paging procedure .................................................................... ........................ 11-6
Figure 11-5 CS paging procedure.....................................................................................................................11-7
Figure 11-6 PS paging procedure ................................................................... .................................................. 11-8
Figure 12-1 Immediate assignment procedure ....................................................................... ........................12-46
Figure 12-2 trigger points of the counters of Immediate Assignment Commands per Cell............................12-48
Figure 12-3 Trigger points of the counters of Call Setup Indications.............................................................12-51
Figure 12-4 Trigger points of the counters of Rejects to Service Requests per Cell ......................................12-52
Figure 12-5 Trigger point of the counters of Assignment Requests per Cell..................................................12-57
Figure 12-6 Trigger Point of the counters of Assignment Commands per Cell.............................. ................12-59
Figure 12-7 Trigger points of the counters of Completed Assignments per Cell ...........................................12-60
Figure 12-8 Trigger points of the counters of Mode Modify Commands per Cell............... ..........................12-65
Figure 12-9 Trigger points of the counters of Failed Mode Modify Attempts per Cell........................... .......12-67
Figure 12-10 Intra-cell handover procedure...................................................................................................12-71
Figure 12-11 Trigger points of the counters of Failed Intra-Cell Handovers per Cell ....................................12-78
Figure 12-12 Incoming internal inter-cell handover.......................................................................................12-89
Figure 12-13 Trigger points of the counters of Failed Incoming Internal Inter-Cell Handovers per Cell ......12-95
Figure 12-14 Outgoing internal inter-cell handover (excluding directed retry) ........................................... 12-101
Figure 12-15 Outgoing internal inter-cell handover (directed retry) ............................................................ 12-102
Figure 12-16 Trigger points of the counters of Failed Outgoing Internal Inter-Cell Handovers per Cell
(Excluding Directed Retry) .......................................................... ................................................................. 12-115
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Performance Counter Reference
xx Huawei Technologies Proprietary Issue 03 (2007-05-09)
Figure 12-17 Trigger points of the counters of Failed Outgoing Internal Inter-Cell Handovers per Cell (Directed
Retry) .................................................................. ......................................................................... ................. 12-116
Figure 12-18 Incoming external inter-cell handover ................................................................... .................12-125
Figure 12-19 Trigger points of the counters of Failed Incoming External Inter-Cell Handovers per Cell BSC.12-132
Figure 12-20 Outgoing external inter-cell handover (excluding directed retry)...........................................12-139
Figure 12-21 Outgoing external inter-cell handover (Directed Retry) ......................................................... 12-141
Figure 12-22 Trigger points of Failed Outgoing External Inter-Cell Handovers (Excluding Directed Retry) ...12-
157
Figure 12-23 Failed Outgoing External Inter-Cell Handovers (Directed Retry) ..........................................12-158
Figure 12-24 Incoming inter-RAT inter-cell handover procedure................................................................ 12-169
Figure 12-25 Incoming inter-RAT inter-cell handover procedure................................................................ 12-173
Figure 12-26 Outgoing inter-RAT inter-cell handover procedure (excluding directed retry).......................12-177
Figure 12-27 Outgoing inter-RAT inter-cell handover procedure (including directed retry) .......................12-178
Figure 12-28 Outgoing inter-RAT inter-cell handover procedure (excluding directed retry).......................12-184
Figure 12-29 Outgoing inter-RAT inter-cell handover procedure (including directed retry) .......................12-185
Figure 14-1 Channel assignment in the immediate assignment procedure.....................................................14-40
Figure 14-2 Channel assignment in the assignment procedure ................................................................... ...14-41
Figure 14-3 Channel assignment in the internal intra-cell handover procedure .............................................14-42
Figure 14-4 Channel assignment in the incoming internal inter-cell handover procedure .............................14-43
Figure 14-5 Channel assignment in the incoming external inter-cell handover procedure.............................14-45
Figure 14-6 Channel assignment in the immediate assignment procedure.....................................................14-49
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Performance Counter Reference Tables
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Tables
Table 1-1 Measurement units of BSC Measurement ............................................................... ...........................1-2
Table 1-2 Counters of Access Measurement per BSC............................................................................ ............1-3
Table 1-3 Counters of TRX Measurement per BSC ............................................................................ .............1-22
Table 1-4 Counters of Call Measurement per BSC...........................................................................................1-23 Table 1-5 Counters of Assignment Measurement per BSC .................................................................. ............1-30
Table 1-6 Counters of Call Drop Measurement per BSC ...................................................................... ...........1-37
Table 1-7 Counters of Handover Failure Measurement per BSC ..................................................................... 1-44
Table 1-8 Counters of Handover Attempt Measurement per BSC.......................... ..........................................1-66
Table 1-9 Counters of Handover Success Measurement per BSC....................................................................1-76
Table 1-10 Counters of Inter-Frequency-Band Measurement per BSC............................................................1-86
Table 1-11 Counters of Handover KPI Measurement per BSC ..................................................................... ...1-96
Table 2-1 Measurement unit of SCCP Measurement..........................................................................................2-2
Table 2-2 Counters of SCCP OSP Measurement............................................................... .................................2-2
Table 3-1 MTP3 Measurement Units..................................................................................................................3-2
Table 3-2 Counters of MTP3 Link Measurement ......................................................................... ......................3-2
Table 4-1 Measurement unit of LAPD Measurement.........................................................................................4-2
Table 4-2 Counters of LAPD Link Measurement...............................................................................................4-2
Table 5-1 Measurement unit of System Load Measurement .......................................................... ....................5-2
Table 5-2 Counters of CPU Usage Measurement .............................................................. .................................5-2
Table 6-1 Measurement units of BTSM Measurement.......................................................................................6-2
Table 6-2 Counters of BTS State Measurement per BTS ................................................................. ..................6-2
Table 6-3 Counters of BTS Configuration Measurement per BM Subrack........................................................6-5
Table 6-4 Counters of Cell State Measurement per Cell.............................................. .......................................6-7
Table 6-5 Counters of Cell Configuration Measurement per BM Subrack....................................................... 6-11
Table 6-6 Counters of TRX State Measurement per TRX.................................................................. ..............6-12
Table 6-7 Counters of TRX Configuration Measurement per BM Subrack ..................................................... 6-13
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Table 6-8 Counters of CRC Error Measurement per BTS............................................................................ ....6-14
Table 6-9 Counters of Duration of CRC Error on Ports 0 Through 23............................................................. 6-15
Table 6-10 Counter of CRC Serious Error Measurement per BTS...................................................................6-16
Table 6-11 Counters of Duration of Serious CRC Error on Ports 0 Through 23 .............................................. 6-16
Table 6-12 Counters of LAPD Link Measurement at the BTS.........................................................................6-18
Table 7-1 Measurement Units of Resources Measurement.................................................................................7-2
Table 7-2 Counters of A Interface Circuit Measurement per DPC .................................................................. ...7-2
Table 7-3 Counters of TC Measurement per DPC..............................................................................................7-6
Table 7-4 Counters of Pb Interface Circuit Measurement per PCU....................................................................7-8
Table 7-5 Counters of Ater Interface Circuit Measurement per BM Subrack................................................... 7-11
Table 8-1 Measurement Unit of MSC Measurement..........................................................................................8-2
Table 8-2 Counters of MSC Measurement per DPC............................................................................. ..............8-2
Table 9-1 Measurement unit of CBC measurement............................................................................................9-2
Table 9-2 Counters of CBC Measurement..........................................................................................................9-2
Table 10-1 Measurement units of PCU Measurement......................................................................................10-2
Table 10-2 Counters of PCU Measurement per BSC .................................................................. .....................10-2
Table 10-3 Counter of PCU Measurement per PCU.........................................................................................10-3
Table 11-1 Measurement units of Paging Measurement...................................................................................11-2
Table 11-2 Counters of Measurement of the Paging on the A Interface per BSC............................................. 11-2
Table 11-3 Counters of Measurement of the Paging on the Abis Interface per Cell.........................................11-6
Table 11-4 Counters of Measurement of Discarded Paging Messages due to Overload per LAPD.................11-8
Table 12-1 Measurement units of call measurement ...................................................................... ..................12-3
Table 12-2 Counters of Call Duration Measurement per BSC ........................................................... ..............12-4
Table 12-3 Counters of Flow Control Measurement per Cell...........................................................................12-5
Table 12-4 Counters of Short Message Measurement per Cell.......................................................................12-13
Table 12-5 Counter classification of Call Drop Measurement per Cell..........................................................12-16
Table 12-6 Counters of Call Drop Sampled Measurement per Cell ............................................................... 12-17
Table 12-7 Counters of Call Drop Analyzed Measurement per Cell .............................................................. 12-22
Table 12-8 Counter classification of Channel Activation Measurement per Cell ...........................................12-30
Table 12-9 Counters of SDCCH Connection Measurement per Cell..............................................................12-30
Table 12-10 TCH Connection Measurement per Cell.....................................................................................12-33
Table 12-11 Counters of Channel Activation Analyzed Measurement per Cell..............................................12-37
Table 12-12 Counters of Channel Seizure Measurement per TRX.................................................................12-42
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Table 12-13 Counter classification of Immediate Assignment Measurement per Cell ...................................12-46
Table 12-14 Counters of Channel Requests per Cell .................................................................. ....................12-47
Table 12-15 Counters of Immediate Assignment Commands per Cell ........................................................... 12-47
Table 12-16 Counters of Call Setup Indications........... ............................................................................ ......12-49
Table 12-17 Counter of Rejects to Service Requests per Cell .............................................................. ..........12-51
Table 12-18 Counters of Immediate Assignment Analyzed Measurement per Cell .......................................12-52
Table 12-19 Counter classification of Assignment Measurement per Cell.....................................................12-55
Table 12-20 Counters of Assignment Requests per Cell.................................................................................12-55
Table 12-21 Counters of Assignment Commands per Cell.............................................................................12-58
Table 12-22 Counters of Completed Assignments per Cell............................................................................12-59
Table 12-23 Counters of Failed Assignments per Cell ......................................................................... ..........12-61
Table 12-24 Counters of Mode Modify Commands per Cell ....................................................................... ..12-64
Table 12-25 Counters of Failed Mode Modify Attempts per Cell .................................................................. 12-65
Table 12-26 Counters of Assignment Procedure Analyzed Measurement per Cell ........................................12-67
Table 12-27 Counter classification of Intra-Cell Handover Requests per Cell...............................................12-71
Table 12-28 Counters of Internal Intra-Cell Handover Requests per Cell......................................................12-72
Table 12-29 Counters of Intra-Cell Handover Commands per Cell................................................................12-73
Table 12-30 Counters of Failed Intra-Cell Handovers per Cell ............................................................ ..........12-74
Table 12-31 Counters of Intra-Cell AMR Handover per Cell.................................................................. .......12-80
Table 12-32 Counters of Intra-Cell Handover Detection Messages Received by BSC per Cell.....................12-82
Table 12-33 Counters of Intra-Cell Handover Measurement per Cell............................................................12-82
Table 12-34 Counter classification of Incoming Internal Inter-Cell Handover Measurement per Cell ..........12-89
Table 12-35 Counters of Incoming Internal Inter-Cell Handover Requests per Cell......................................12-90
Table 12-36 Counters of Incoming Internal Inter-Cell Handover Responses per Cell ...................................12-91
Table 12-37 Counters of Failed Incoming Internal Inter-Cell Handovers per Cell......................................... 12-92
Table 12-38 Counters of Incoming Internal Inter-Cell Handover Detection Messages Received by BSC per Cell.........................................................................................................................................................................12-96
Table 12-39 Counters of Incoming Internal Inter-Cell Handover Analyzed Measurement per Cell...............12-97
Table 12-40 Counter classification of Outgoing Internal Inter-Cell Handover Measurement per Cell ........12-103
Table 12-41 Counters of Outgoing Internal Inter-Cell Handover Requests per Cell (Excluding Directed Retry)
.......................................................................................................................................................................12-103
Table 12-42 Counters of Outgoing Internal Inter-Cell Handover Requests per Cell (Directed Retry)......... 12-104
Table 12-43 Counters of Outgoing Internal Inter-Cell Handover Commands per Cell (Excluding Directed Retry)
.......................................................................................................................................................................12-106
Table 12-44 Counters of Outgoing Internal Inter-Cell Handover Commands per Cell (Directed Retry) .....12-107
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Table 12-45 Counters of Failed Outgoing Internal Inter-Cell Handovers per Cell (Excluding Directed Retry).12-
110
Table 12-46 Counters of Failed Outgoing Internal Inter-Cell Handovers per Cell (Directed Retry)............ 12-111
Table 12-47 Counters of Failed Outgoing Internal Inter-Cell Handovers per Cell (Including Directed Retry)..12-112
Table 12-48 Counters of Outgoing Internal Inter-Cell Handover Measurement per Cell ............................. 12-119
Table 12-49 Counter classification of Incoming External Inter-Cell Handover Measurement per Cell .......12-125
Table 12-50 Counters of Incoming External Inter-Cell Handover Requests per Cell...................................12-126
Table 12-51 Counters of Incoming External Inter-Cell Handover Responses per Cell ................................12-128
Table 12-52 Counters of Failed Incoming External Inter-Cell Handovers per Cell......................................12-129
Table 12-53 Counters of Incoming External Inter-Cell Handover Detection Messages Received by BSC per Cell
.......................................................................................................................................................................12-134
Table 12-54 Counters of Incoming External Inter-Cell Handover Analyzed Measurement per Cell ...........12-135
Table 12-55 Counter classification of outgoing External Inter-Cell Handover Measurement per Cell ........12-142
Table 12-56 Counters of Outgoing External Inter-Cell Handover Requests per Cell (Excluding Directed Retry)
.......................................................................................................................................................................12-142
Table 12-57 Counters of Outgoing External Inter-Cell Handover Requests per Cell (Directed Retry)........12-143
Table 12-58 Counters of Outgoing External Inter-Cell Handover Requests per Cell (Including Directed Retry)
.......................................................................................................................................................................12-144
Table 12-59 Counters of Outgoing External Inter-Cell Handover Commands per Cell (Excluding Directed Retry)
.......................................................................................................................................................................12-145
Table 12-60 Counters of Outgoing External Inter-Cell Handover Commands per Cell (Directed Retry) ....12-146
Table 12-61 Counters of Outgoing External Inter-Cell Handover Commands per Cell (Including Directed Retry)
.......................................................................................................................................................................12-147
Table 12-62 Counters of Failed Outgoing External Inter-Cell Handovers per Cell (Excluding Directed Retry)12-
149
Table 12-63 Counters of Failed Outgoing External Inter-Cell Handovers per Cell (Directed Retry)...........12-151
Table 12-64 Counters of Failed Outgoing External Inter-Cell Handovers per Cell (Including Directed Retry).12-
152
Table 12-65 Counters of Outgoing External Inter-Cell Handover Analyzed Measurement per Cell............ 12-162
Table 12-66 Counter types of Incoming Inter-RAT Inter-Cell Handover Measurement per Cell .................12-169
Table 12-67 Counters of Incoming Inter-RAT Inter-Cell Handover Requests per Cell ................................12-170
Table 12-68 Counters of Incoming Inter-RAT Inter-Cell Handover Responses per Cell..............................12-171
Table 12-69 Counters of Failed Incoming Inter-RAT Inter-Cell Handovers per Cell...................................12-172
Table 12-70 Counters of Incoming Inter-RAT Inter-Cell Handover Analyzed Measurement per Cell......... 12-174
Table 12-71 Counter types of Outgoing Inter-RAT Inter-Cell Handover Measurement per Cell .................12-178
Table 12-72 Counters of Outgoing Inter-RAT Inter-Cell Handover Requests per Cell ................................12-179
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Table 12-73 Counters of Outgoing Inter-RAT Inter-Cell Handover Commands per Cell ............................12-180
Table 12-74 Counters of Failed Outgoing Inter-RAT Inter-Cell Handovers per Cell ...................................12-181
Table 12-75 Counters of Outgoing Inter-RAT Inter-Cell Handover Analyzed Measurement per Cell .........12-187
Table 12-76 Counter types of CGSM Cell to GSM Cell Incoming Handover Measurement....................... 12-191
Table 12-77 Counter of Failed Cell Incoming Handovers (Cell to Cell)...................................................... 12-192
Table 12-78 Counters of Cell Incoming Handover Analyzed Measurement (Cell to Cell) ..........................12-193
Table 12-79 Counter types of GSM Cell to GSM Cell Outgoing Handover ................................................ 12-195
Table 12-80 Counters of Cell Outgoing Handover Commands (Cell to Cell).............................................. 12-195
Table 12-81 Counters of Failed Cell Outgoing Handovers (Cell to Cell).....................................................12-197
Table 12-82 Counters of Cell Outgoing Handover Analyzed Measurement................................................. 12-198
Table 12-83 Counter types of Measurement of MRs upon Handover Initiation per Cell .............................12-200
Table 12-84 Counters of Measurement of MRs upon Handover Initiation (Receiving Quality) per Cell ....12-200
Table 12-85 Counters of Concentric Cell Handover Initiation MR Analyzed Measurement (Receiving Level)
per Cell........ ..................................................................... .......................................................................... ...12-203
Table 12-86 Counters of Concentric Cell Handover Initiation MR Analyzed Measurement (Timing Advance)
per Cell........ ..................................................................... .......................................................................... ...12-204
Table 12-87 Counters of KPI Measurement per Cell....................................................................................12-205
Table 12-88 Counter of Calls Discarded due to Overload per LAPD........................................................... 12-221
Table 13-1 Measurement units of MR Measurement........................................................................................13-3
Table 13-2 Counters of Number of MRs per Cell.............................................................................................13-3
Table 13-3 Counters of Sampled MRs per Cell .................................................................. ..............................13-4
Table 13-4 Counters of Analyzed MRs per Cell...............................................................................................13-5
Table 13-5 Power level range of the interference band.....................................................................................13-7
Table 13-6 Counters of Interference Band Measurement per TRX.................................................................. 13-7
Table 13-7 Counters of Sampled Measurement of Interference Band..............................................................13-7
Table 13-8 Counters of Analyzed Measurement of Interference Band per TRX..............................................13-8
Table 13-9 Counters of Power Control Messages per Cell.............................................................................13-10
Table 13-10 Counters of Number of Power Control Messages per Cell.........................................................13-11
Table 13-11 Counters of Sampled Power Rank During Power Control per Cell............................................13-12
Table 13-12 Counters of Analyzed Power Rank During Power Control per Cell...........................................13-12
Table 13-13 Counters of Sampled Level of Power Control Signals per Cell..................................................13-13
Table 13-14 Counters of Analyzed Level of Power Control Signals per Cell ................................................13-14
Table 13-15 Counters of Quality of Power Control Signals per Cell..............................................................13-14
Table 13-16 Counters of Analyzed Quality of Power Control Signals per Cell..............................................13-15
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Table 13-17 Counters of Sampled Duration of Maximum Power per Cell.....................................................13-15
Table 13-18 Counters of Analyzed Duration of Maximum Power per Cell............................ ........................13-16
Table 13-19 Counters of Neighbor Cell Level Measurement per Cell ........................................................... 13-19
Table 13-20 Rank of the receive level ............................................................. ............................................... 13-20
Table 13-21 Rank of the receive quality based on the bit error rate ............................................................... 13-21
Table 13-22 Counters of TCHF Receive Level Measurement per TRX......................................................... 13-21
Table 13-23 Counters of TCHH Receive Level Measurement per TRX ........................................................ 13-29
Table 13-24 Counters of Receive Quality Measurement per TRX................................................................. 13-36
Table 13-25 Mapping between the uplink/downlink balance rank and the receive level ...............................13-39
Table 13-26 Counters of Uplink-and-Downlink Balance Measurement per TRX................. .........................13-40
Table 13-27 Counters of Number of MRs based on TA per TRX.................................................... ...............13-41
Table 13-28 Counters of Radio Link Failure Measurement per TRX............................................................. 13-43
Table 13-29 Counters of Uplink and Downlink Level During Radio Link Failure per TRX .........................13-43
Table 13-30 Counters of Mean Uplink and Downlink Level During Radio Link Failure per TRX ...............13-44
Table 13-31 Counters of Uplink and Downlink Quality During Radio Link Failure per TRX ......................13-45
Table 13-32 Counters of Mean Quality of Uplink and Downlink During Radio Link Failure per TRX........13-46
Table 13-33 Counters of TA During Radio Link Failure per TRX ................................................................. 13-47
Table 13-34 Counters of Mean TA During Radio Link Failure per TRX....................................................... 13-47
Table 13-35 Counters of Sampled Radio Link Failures per TRX...................................................................13-48
Table 13-36 Counters of Radio Link Failure Measurement based on TA per TRX........................................13-49
Table 13-37 Counters of RQI Measurement based on TA per TRX ............................................................... 13-51
Table 13-38 Counters of Sampled RQI based on TA per TRX................................................................... ....13-51
Table 13-39 Counters of Analyzed RQI based on TA per TRX................................................................. .....13-54
Table 14-1 Measurement units of Channel Measurement.................................................................................14-3
Table 14-2 Classification of the counters in the Channel Configuration Measurement per Cell measurement unit
...........................................................................................................................................................................14-4
Table 14-3 Counters in the Sampled Measurement of Initially Configured Channels measurement unit ........14-4
Table 14-4 Counters in the Analyzed Measurement of Dynamically Configured Channels measurement unit14-7
Table 14-5 Counters in the Analyzed Measurement of Available Channels measurement unit ......................14-12
Table 14-6 Counters in the Analyzed Measurement of Initially Configured Channels measurement unit .....14-20
Table 14-7 Counters in the Channel Conversion Measurement per Cell measurement unit........................... 14-22
Table 14-8 Classification of the counters in the Channel Busy Duration Measurement per Cell measurement
unit ................................................................ ................................................................. .................................14-27
Table 14-9 Counters in the Busy State Duration of All Channels (SDCCH/TCHF/TCHH) measurement unit .14-
27
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Table 14-10 Counters in the Mean Duration of Busy State for All Channels (SDCCH/TCHF/TCHH)
measurement unit .................................................................. ............................................................... ...........14-28
Table 14-11 Counters in the Measurement of Maximum Busy Channels per Cell measurement unit............ 14-29
Table 14-12 Classification of the counters in the Channel State Measurement per Cell measurement unit ...14-31 Table 14-13 Counters in the Mean Number of Busy Signaling Channels (SDCCH/TCHF/TCHH) measurement
unit ................................................................ ................................................................. .................................14-31
Table 14-14 Counters in the Mean Number of Busy TCHs (TCHF/TCHH) measurement unit.....................14-33
Table 14-15 Counters in the Mean Number of Blocked Channels measurement unit ....................................14-34
Table 14-16 Counters in the Mean Number of Idle Channels measurement unit ...........................................14-34
Table 14-17 Counters in the Mean Number of Busy Signaling Channels (SDCCH/TCHF/TCHH) measurement
unit ................................................................ ................................................................. .................................14-36
Table 14-18 Counters in the Mean Number of Busy TCHs (TCHF/TCHH) measurement unit.....................14-37
Table 14-19 Classification of the counters in the Channel Assignment Request Measurement per Cell
measurement unit .................................................................. ............................................................... ...........14-38
Table 14-20 Counters in the Channel Assignment Requests in Immediate Assignment Procedure
(SDCCH/TCHF/TCHH/TCH) measurement unit ................................................................ ...........................14-39
Table 14-21 Counters in the Channel Assignment Requests in Assignment Procedure (TCHF/TCHH/TCH)
measurement unit .................................................................. ............................................................... ...........14-40
Table 14-22 Counters in the Channel Assignment Requests in Internal Intra-Cell Handover Procedure
(SDCCH/TCHF/TCHH/TCH) measurement unit ................................................................ ...........................14-41
Table 14-23 Counters in the Channel Assignment Requests in Incoming Internal Inter-Cell Handover Procedure
(SDCCH/TCHF/TCHH/TCH) measurement unit ................................................................ ...........................14-43
Table 14-24 Counters in the Channel Assignment Requests in Incoming External Inter-Cell Handover
Procedure measurement unit .................................................................... ....................................................... 14-44
Table 14-25 Classification of the counters in the Channel Assignment Success Measurement per TRX
measurement unit .................................................................. ............................................................... ...........14-48
Table 14-26 Counters in the Channel Assignment Success Measurement per TRX measurement unit .........14-48
Table 14-27 Counters in the Successful Channel Assignments in Assignment Procedure (TCHF/TCHH)
measurement unit .................................................................. ............................................................... ...........14-50
Table 14-28 Counters in the Successful Channel Assignments in Internal Intra-Cell Handover Procedure
(SDCCH/TCHF/TCHH) .............................................................. ................................................................... 14-51
Table 14-29 Counters in the Successful Channel Assignments in Incoming Internal Inter-Cell Handover
Procedure (SDCCH/TCHF/TCHH) measurement unit ........................................................... ........................14-52
Table 14-30 Counters in the Successful Channel Assignments in Incoming External Inter-Cell Handover
Procedure (SDCCH/ TCHF/TCHH) measurement unit ......................................................................... .........14-53
Table 14-31 Classification of the counters in the Channel Assignment Failure Measurement per Cell
measurement unit .................................................................. ............................................................... ...........14-56
Table 14-32 Counters in the Channel Assignment Failures (All Channels Busy or Channels Unconfigured) in
Assignment Procedure (TCHF/TCHH) measurement unit .................................................................. ...........14-59
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Table 14-33 Counters in the Channel Assignment Failures (All Channels Busy or Channels Unconfigured) in
Internal Intra-Cell Handover Procedure (TCHF/TCHH) measurement unit ................................................... 14-61
Table 14-34 Counters in the Channel Assignment Failures (All Channels Busy or Channels Unconfigured) in
Incoming Internal Inter-Cell Handover Procedure (TCHF/ TCHH) measurement unit ..................................14-62
Table 14-35 Counters in the Channel Assignment Failures (All Channels Busy or Channels Unconfigured) in
Incoming External Inter-Cell Handover Procedure (TCHF/ TCHH) measurement unit .................................14-64
Table 14-36 Counter classification of Channel Assignment Concentric Cell Measurement per Cell............. 14-68
Table 14-37 Channel Assignment Requests of Concentric Cell ..................................................................... 14-69
Table 14-38 Counters of TCH Assignment Requests of Concentric Cell ....................................................... 14-70
Table 14-39 Counters of Channel Assignment Requests of Concentric Cell in Incoming Internal Inter-Cell
Handover Procedure (TCH ) ................................................................. .......................................................... 14-70
Table 14-40 Counters of Channel Assignment Requests in Incoming External Inter-Cell Handover Procedure
(TCH)..............................................................................................................................................................14-71
Table 14-41 Counters of Channel Assignment Overflows (TCH) (Underlaid Subcell Preferred or Overlaid
Subcell Preferred)............................................................................................................................................14-72
Table 14-42 Counters of Channel Assignment Overflows in Concentric Cell in Incoming Internal Inter-Cell
Handover Procedure (TCH) .................................................................. .......................................................... 14-73
Table 14-43 Counters of Channel Assignment Overflows in Concentric Cell in Incoming External Inter-Cell
Handover Procedure (TCH) .................................................................. .......................................................... 14-74
Table 14-44 Counters of Channel Assignment Overflows in Concentric Cell (TCH)....................................14-74
Table 14-45 Counters of Channel Assignment Overflows in Concentric Cell (SDCCH)...............................14-75
Table 14-46 Counters of Channel Assignment Overflows in Concentric Cell (TCHF).................................. 14-76
Table 14-47 Counters of Channel Assignment Overflows in Concentric Cell (TCHH).................................14-76
Table 14-48 Measurement units of Channel Assignment Queue Measurement per Cell................................14-78
Table 14-49 Counters of Channel Assignment Queue Measurement ............................................................. 14-80
Table 14-50 Counters of Channel Assignment GPRS Measurement per Cell ................................................14-83
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Performance Counter Reference 1 BSC Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 1-1
1 BSC Measurement
About This Chapter
The following table lists the sections of this chapter.
Section Description
1.1 Overview of BSC
Measurement
Introduces the BSC Measurement and its measurement
units.
1.2 Access Measurement perBSC
Describes the Access Measurement per BSC and itscounters.
1.3 TRX Measurement perBSC
Describes the TRX Measurement per BSC and itscounters.
1.4 Call Measurement perBSC Describes the Call Measurement per BSC and itscounters.
1.5 Assignment Measurement
per BSC
Describes the Assignment Measurement per BSC and its
counters.
1.6 Call Drop Measurement per BSC
Describes the Call Drop Measurement per BSC and itscounters.
1.7 Handover Failure
Measurement per BSC
Describes the Handover Failure Measurement per BSC
and its counters.
1.8 Handover Attempt
Measurement per BSC
Describes the Handover Attempt Measurement per BSC
and its counters
1.9 Handover Success
Measurement per BSC
Describes the Handover Success Measurement per BSC
and its counters.
1.10 Inter-Frequency-BandMeasurement per BSC
Describes the Inter-Frequency-Band Measurement perBSC and its counters.
1.11 Handover KPI
Measurement per BSC
Describes the Handover KPI Measurement per BSC and
its counters.
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1.1 Overview of BSC Measurement
BSC Measurement refers to the measurement of traffic in all the cells controlled by a BSC.Table 1-1 lists the measurement units of BSC Measurement.
Table 1-1 Measurement units of BSC Measurement
Measurement Unit Section
Access Measurement per BSC 1.2
TRX Measurement per BSC 1.3
Call Measurement per BSC 1.4
Assignment Measurement per BSC 1.5
Call Drop Measurement per BSC 1.6
Handover Failure Measurement per BSC 1.7
Handover Attempt Measurement per BSC 1.8
Handover Success Measurement per BSC 1.9
Inter-Frequency-Band Measurement per BSC 1.10
Handover KPI Measurement per BSC 1.11
1.2 Access Measurement per BSC
1.2.1 Overview
When an MS requires network services for reasons such as the Mobile Originated Call(MOC), Mobile Terminated Call (MTC), emergency call, call re-establishment, location
updating, packet call, and Location Measurement Unit (LMU)+Reserved, it sends the BTS aCHAN REQ message on the RACH. After receiving this message, the BTS reports a CHAN
RQD message to the BSC for a signaling channel.
After receiving the CHAN RQD message, the BSC assigns and activates a signaling channelto the MS. If the BSC receives a CHAN ACTIV ACK message from the BTS, the signaling
channel is ready for the assignment. The BSC sends an IMM ASS CMD message, requestingthe MS to access the specified signaling channel. This signaling channel can be an SDCCH or
a TCH.
After receiving a FIRST SABM frame from the MS, the BTS sends an EST IND message tothe BSC.
After receiving the EST IND message that carries an MM message (CM SERV REQ message,
LOC UPD REQ message, IMSI DTCH message, PAG RSP message, CM RE-EST REQ
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Performance Counter Reference 1 BSC Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 1-3
message, SS ACTIVATION message, LCS message), the BSC requests the MSC to establishthe A interface connection and transparently transmits the MM message to the MSC.
Table 1-2 lists the counters of Access Measurement per BSC.
Table 1-2 Counters of Access Measurement per BSC
Counter Section
ZCA300J: Immediate Assignment Requests per BSC 1.2.2
ZK3101: Immediate Assignment Commands per BSC 1.2.3
ZK3000: SDCCH Seizure Requests per BSC 1.2.4
ZK3001: Failed SDCCH Seizures due to Busy SDCCH per BSC 1.2.5
ZK3003: Successful SDCCH Seizures per BSC 1.2.6
ZCM30: Call Drops on SDCCH per BSC 1.2.7
ZK3004: Traffic Volume on SDCCH per BSC 1.2.8
ZK3005: Available SDCCHs per BSC 1.2.9
ZK3006: Configured SDCCHs per BSC 1.2.10
ZK3020: TCH Seizure Requests per BSC (Signaling Channel) 1.2.11
ZK3021: Failed TCH Seizures due to Busy TCH per BSC (Signaling Channel) 1.2.12
ZK3023: Successful TCH Seizures per BSC (Signaling Channel) 1.2.13
ZK3022: Call Drops on TCH per BSC (Signaling Channel) 1.2.14
ZK3024: Traffic Volume on TCH per BSC (Signaling Channel) 1.2.15
ZK3010A: TCH Seizure Requests per BSC (Traffic Channel) 1.2.16
ZK3011A: Failed TCH Seizures due to Busy TCH per BSC (Traffic Channel) 1.2.17
ZK3013A: Successful TCH Seizures per BSC (Traffic Channel) 1.2.18
ZCM36D: Call Drops on TCH in Stable State per BSC (Traffic Channel) 1.2.19
ZK3010B: TCH Seizure Requests in TCH Handovers per BSC (TrafficChannel)
1.2.20
ZK3011B: Failed TCH Seizures in TCH Handovers due to Busy TCH per BSC(Traffic Channel)
1.2.21
ZK3013B: Successful TCH Seizures in TCH handovers per BSC (Traffic
Channel)
1.2.22
ZCM339B: Call Drops in TCH Handovers per BSC (Traffic Channel) 1.2.23
ZK3014: Traffic Volume on TCH per BSC (Traffic Channel) 1.2.24
ZK3015: Available TCHs per BSC 1.2.25
ZK3016: Configured TCHs per BSC 1.2.26
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Counter Section
ZCA303J: Call Setup Indications per BSC (CS Service) 1.2.27
ZTR101A: Random Access Success Ratio per BSC 1.2.28
ZTR102A: TCH Assignment Success Ratio per BSC 1.2.29
ZTR103A: Congestion Ratio on SDCCH per BSC 1.2.30
ZTR104A: Call Drop Ratio on SDCCH per BSC 1.2.31
ZTR105A: SDCCH Availability per BSC 1.2.32
ZTR106A: Congestion Ratio on TCH per BSC 1.2.33
ZTR107A: Call Drop Ratio on TCH per BSC 1.2.34
ZTR108A: Traffic Call Drop Ratio on TCH per BSC 1.2.35
ZTR109A: TCH Availability per BSC 1.2.36
ZTR110A: Call Setup Success Ratio per BSC (Immediate Assignment) 1.2.37
1.2.2 Immediate Assignment Requests per BSC
Counter
ZCA300J: Immediate Assignment Requests per BSC
Meaning
To obtain the service from the network, an MS sends a CHAN REQ message on the RACH.
After receiving this message, the BTS sends a CHAN RQD message to the BSC for adedicated channel. This counter applies to the channel access due to all causes but PS services
in all the cells controlled by a BSC.
Trigger Point
None.
Formula
Immediate Assignment Requests per BSC = ∑<
=
N i
i 0
Immediate Assignment Requests
This counter is the sum of the predefined counter Immediate Assignment Requests in all the
cells controlled by a BSC.
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1.2.3 Immediate Assignment Commands per BSC
Counter
ZK3101: Immediate Assignment Commands per BSC
Meaning
In an immediate assignment procedure, an MS reports a CHAN REQ message to the BTS.
The BTS receives this message and sends a CHAN RQD message to the BSC. After receivingthe CHAN RQD message, the BSC assigns a signaling channel to the MS and activates thechannel. If the BSC receives a CHAN ACTIV ACK message from the BTS, the BTS already
prepares the channel. The BSC sends an IMM ASSIGN CMD message to the MS, requestingthe MS to access the specified signaling channel. This channel may be an SDCCH or a TCH.
This counter applies to the channel access due to all causes but PS services in all the cellscontrolled by a BSC.
Trigger Point
None.
Formula
None.
1.2.4 SDCCH Seizure Requests per BSC
CounterZK3000: SDCCH Seizure Requests per BSC
Meaning
In an immediate assignment procedure, an MS requests a channel from the BSS. In an inter-
BSC incoming handover procedure, the MSC requests the BSS to assign a channel for the MS.In an internal handover procedure, the BSC requests a channel from the BSS. In the channel
request procedures described previously, the BSC receives a related request and thenmeasures this counter if the requested channel is an SDCCH.
Trigger Point None.
Formula
SDCCH Seizure Requests per BSC =∑<
=
N i
i 0
SDCCH Seizure Requests
This counter is the sum of the predefined counter SDCCH Seizure Requests in all the cellscontrolled by a BSC.
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1.2.5 Failed SDCCH Seizures due to Busy SDCCH per BSC
Counter
ZK3001: Failed SDCCH Seizures due to Busy SDCCH per BSC
Meaning
In an immediate assignment procedure or a handover procedure, the BSC triggers the counter
when the MS or the MSC requests an SDCCH from the BSS but no SDCCH is available.
Trigger Point
None.
Formula
Failed SDCCH Seizures due to Busy SDCCH per BSC =∑<
=
N i
i 0
Failed SDCCH Seizures due to
Busy SDCCH
This counter is the sum of the predefined counter Failed SDCCH Seizures due to Busy
SDCCH in all the cells controlled by a BSC.
1.2.6 Successful SDCCH Seizures per BSC
Counter
ZK3003: Successful SDCCH Seizures per BSC
Meaning
In an SDCCH immediate assignment procedure, the BTS sends a channel activation success
message to the BSC. After receiving this message, the BSC regards the SDCCH as beingsuccessfully seized. In an SDCCH handover procedure, the BTS sends a handover detectionmessage to the target cell. After receiving this message, the BSC regards the SDCCH as being
successfully seized.
This counter applies to the previous two cases.
Trigger Point
None.
Formula
Successful SDCCH Seizures per BSC=∑<
=
N i
i 0
Successful SDCCH Seizures
This counter is the sum of the predefined counter Successful SDCCH Seizures in all the cells
controlled by a BSC.
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Performance Counter Reference 1 BSC Measurement
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1.2.7 Call Drops on SDCCH per BSC
Counter
ZCM30: Call Drops on SDCCH per BSC
Meaning
This counter measures the number of call drops on the SDCCH in all the cells controlled by a
BSC. The call drops may be caused by the Um interface failure, no MRs from the MS for along time, Abis interface failure, equipment failure, and forced handover.
Trigger Point
None.
Formula
Call Drops on SDCCH per BSC=∑<
=
N i
i 0
Call Drops on SDCCH
This counter is the sum of the predefined counter Call Drops on SDCCH in all the cells
controlled by a BSC.
1.2.8 Traffic Volume on SDCCH per BSC
Counter
ZK3004: Traffic Volume on SDCCH per BSC
Meaning
This counter measures the ratio of the duration for which the MS occupies the SDCCH to the
granularity period. The duration for which the MS occupies the SDCCH is equal to thenumber of measurement reports from the MS on the SDCCH multiplied by the reporting period 0.47 second.
Trigger Point
None.
Formula
Traffic Volume on SDCCH per BSC =∑<
=
N i
i 0
Traffic Volume on SDCCH
This counter is the sum of the predefined counter Traffic Volume on SDCCH in all the cellscontrolled by a BSC.
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1.2.9 Available SDCCHs per BSC
Counter
ZK3005: Available SDCCHs per BSC
Meaning
This counter measures the number of SDCCHs in idle or busy state in all the cells controlled
by a BSC. Here, the SDCCHs include those obtained dynamically from TCHs. This counter isequal to the total number of available SDCCHs per BSC divided by the number of sample points.
Trigger Point
None.
Formula
Available SDCCHs per BSC =∑<
=
N i
i 0
Available SDCCHs
This counter is the sum of the predefined counter Available SDCCHs in all the cells controlled by a BSC.
1.2.10 Configured SDCCHs per BSC
Counter
ZK3006: Configured SDCCHs per BSC
Meaning
This counter measures the number of SDCCHs configured for all the cells controlled by a
BSC. Here, the SDCCHs include those obtained dynamically from TCHs. This countermeasures the mean number of configured SDCCHs per BSC.
Trigger Point
None.
Formula
Configured SDCCHs per BSC = ∑<
=
N i
i 0
Configured SDCCHs
This counter is the sum of the predefined counter Configured SDCCHs in all the cellscontrolled by a BSC.
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference 1 BSC Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 1-9
1.2.11 TCH Seizure Requests per BSC (Signaling Channel)
Counter
ZK3020: TCH Seizure Requests per BSC (Signaling Channel)
Meaning
This counter measures the number of the CHAN RQD messages sent from the BTS to the
BSC in a very early TCH assignment procedure.
Trigger Point
None.
Formula
TCH Seizure Requests per BSC (Signaling Channel)= ∑<
=
N i
i 0
TCH Seizure Requests (Signaling
Channel)
This counter is the sum of the predefined counter TCH Seizure Requests (Signaling Channel)
in all the cells controlled by a BSC.
1.2.12 Failed TCH Seizures due to Busy TCH per BSC (SignalingChannel)
Counter
ZK3021: Failed TCH Seizures due to Busy TCH per BSC (Signaling Channel)
Meaning
This counter measures the number of times the BSC has no TCH (signaling channel) to assignin a very early TCH assignment procedure.
Trigger Point
None.
Formula
Failed TCH Seizures due to Busy TCH per BSC (Signaling Channel)=∑<
=
N i
i 0
Failed TCH
Seizures due to Busy TCH (Signaling Channel)
This counter is the sum of the predefined counter Failed TCH Seizures due to Busy TCH
(Signaling Channel) in all the cells controlled by a BSC.
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Performance Counter Reference
1-10 Huawei Technologies Proprietary Issue 03 (2007-05-09)
1.2.13 Successful TCH Seizures per BSC (Signaling Channel)
Counter
ZK3023: Successful TCH Seizures per BSC (Signaling Channel)
Meaning
This counter measures the number of successful activations of TCHs (signaling channels)
assigned by the BSC in a very early TCH assignment procedure.
Trigger Point
None.
Formula
Successful TCH Seizures per BSC (Signaling Channel)=∑<
=
N i
i 0
Successful TCH Seizures
(Signaling Channel)
This counter is the sum of the predefined counter Successful TCH Seizures (Signaling
Channel) in all the cells controlled by a BSC.
1.2.14 Call Drops on TCH per BSC (Signaling Channel)
Counter
ZK3022: Call Drops on TCH per BSC (Signaling Channel)
Meaning
This counter measures the number of call drops occurred although the MS sets up on the TCH
a normal connection with the service type of signaling.
Trigger Point
None.
Formula
Call Drops on TCH per BSC (Signaling Channel)=∑<
=
N i
i 0
Call Drops on TCH (Signaling
Channel)
This counter is the sum of the predefined counter Call Drops on TCH (Signaling Channel) in
all the cells controlled by a BSC.
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference 1 BSC Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 1-11
1.2.15 Traffic Volume on TCH per BSC (Signaling Channel)
Counter
ZK3024: Traffic Volume on TCH per BSC (Signaling Channel)
Meaning
This counter measures the ratio of the duration for which the MS occupies the TCH (signaling
channel) to the granularity period. The duration for which the MS occupies the TCH is equalto the number of measurement reports from the MS on the TCH multiplied by the reporting period 0.48 second.
Trigger Point
None.
Formula
Traffic Volume on TCH per BSC (Signaling Channel)=∑<
=
N i
i 0
Traffic Volume on TCH
(Signaling Channel)
This counter is the sum of the predefined counter Traffic Volume on TCH (Signaling Channel)
in all the cells controlled by a BSC.
1.2.16 TCH Seizure Requests per BSC (Traffic Channel)
Counter
ZK3010A: TCH Seizure Requests per BSC (Traffic Channel)
Meaning
This counter measures the number of TCH (traffic channel) seizure requests received by the
BSC from the MSC.
Trigger Point
None.
Formula
TCH Seizure Requests per BSC (Traffic Channel)=∑<
=
N i
i 0
TCH Seizure Requests (Traffic
Channel)
This counter is the sum of the predefined counter TCH Seizure Requests (Traffic Channel) in
all the cells controlled by a BSC.
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1 BSC Measurement
HUAWEI BSC6000 Base Station Controller
Performance Counter Reference
1-12 Huawei Technologies Proprietary Issue 03 (2007-05-09)
1.2.17 Failed TCH Seizures due to Busy TCH per BSC (TrafficChannel)
CounterZK3011A: Failed TCH Seizures due to Busy TCH per BSC (Traffic Channel)
Meaning
This counter measures the number of failed TCH (traffic channel) seizures due to no TCH
available.
Trigger Point
None.
Formula
Failed TCH Seizures due to Busy TCH per BSC (Traffic Channel) = [∑<
=
N i
i 0
Failed Assignments
(First Assignment, No Channel Available in Assignment Procedure)]+ [∑<
=
N i
i 0
Failed
Assignments (First Assignment, No Channel Available in Directed Retry Procedure)]+
[∑<
=
N i
i 0
Failed Assignments (Reconnection to Old Channels, No Channel Available in
Assignment)]+ [∑<
=
N i
i 0
Failed Assignments (Reconnection to Old Channels, No Channel
Available in Directed Retry)]
1.2.18 Successful TCH Seizures per BSC (Traffic Channel)
Counter
ZK3013A: Successful TCH Seizures per BSC (Traffic Channel)
MeaningThis counter measures the number of successful TCH (traffic channel) seizures by the MS in
assignment procedures.
Trigger Point
None.
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference 1 BSC Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 1-13
Formula
Successful TCH Seizures per BSC (Traffic Channel)=∑<
=
N i
i 0
Successful TCH Seizures (Traffic
Channel)
This counter is the sum of the predefined counter Successful TCH Seizures (Traffic Channel)
in all the cells controlled by a BSC.
1.2.19 Call Drops on TCH in Stable State per BSC (TrafficChannel)
Counter
ZCM36D: Call Drops on TCH in Stable State per BSC (Traffic Channel)
Meaning
This counter measures the number of call drops occurred after the MS is in the stable
communication state on the TCH (traffic channel).
Trigger Point
None.
Formula
Call Drops on TCH in Stable State per BSC (Traffic Channel)=∑<
=
N i
i 0
Call Drops on TCH
This counter is the sum of the predefined counter Call Drops on TCH in all the cells
controlled by a BSC.
1.2.20 TCH Seizure Requests in TCH Handovers per BSC (TrafficChannel)
Counter
ZK3010B: TCH Seizure Requests in TCH Handovers per BSC (Traffic Channel)
Meaning
In an internal handover procedure, the MS requests the BSS to reassign a TCH (traffic
channel). In an inter-BSC incoming handover procedure, the MSC requests the BSS to assigna TCH (traffic channel).
This counter measures the total number of TCH seizure requests in the procedures mentioned previously.
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Performance Counter Reference
1-14 Huawei Technologies Proprietary Issue 03 (2007-05-09)
Trigger Point
None.
Formula
TCH Seizure Requests in TCH Handovers per BSC (Traffic Channel)=∑<
=
N i
i 0
Internal Incoming
Cell Handover Requests per BSC(TCH)
This counter is the sum of the predefined counter Internal Incoming Cell Handover Requests per BSC(TCH) in all the cells controlled by a BSC.
1.2.21 Failed TCH Seizures in TCH Handovers due to Busy TCHper BSC (Traffic Channel)
Counter
ZK3011B: Failed TCH Seizures in TCH Handovers due to Busy TCH per BSC (Traffic
Channel)
Meaning
This counter measures the number of failed TCH (traffic channel) seizures due to no TCH
available in TCH handovers.
Trigger Point
None.
Formula
Failed TCH Seizures in TCH Handovers due to Busy TCH per BSC (Traffic Channel)=∑<
=
N i
i 0
Failed TCH Seizures in TCH Handovers due to Busy TCH (Traffic Channel)
This counter is the sum of the predefined counter Failed TCH Seizures in TCH Handoversdue to Busy TCH (Traffic Channel) in all the cells controlled by a BSC.
1.2.22 Successful TCH Seizures in TCH handovers per BSC(Traffic Channel)
Counter
ZK3013B: Successful TCH Seizures in TCH handovers per BSC (Traffic Channel)
Meaning
This counter measures the number of successful TCH (traffic channel) seizures by the MSduring TCH handovers.
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference 1 BSC Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 1-15
Trigger Point
None.
Formula
Successful TCH Seizures in TCH handovers per BSC (Traffic Channel)=∑<
=
N i
i 0
Successful
TCH Seizures in TCH handovers (Traffic Channel)
This counter is the sum of the predefined counter Successful TCH Seizures in TCH handovers(Traffic Channel) in all the cells controlled by a BSC.
1.2.23 Call Drops in TCH Handovers per BSC (Traffic Channel)
CounterZCM339B: Call Drops in TCH Handovers per BSC (Traffic Channel)
Meaning
This counter measures the number of call drops due to the Um interface failure during TCH
(traffic channel) handovers.
Trigger Point
None.
Formula
Call Drops in TCH Handovers per BSC (Traffic Channel)=∑<
=
N i
i 0
Clear Requests Sent on the A
Interface in Handover State (TCHF) (TCH)+∑<
=
N i
i 0
Clear Requests Sent on the A Interface in
Handover State (TCHH) (TCH)
1.2.24 Traffic Volume on TCH per BSC (Traffic Channel)
Counter
ZK3014: Traffic Volume on TCH per BSC (Traffic Channel)
Meaning
This counter measures the ratio of the duration for which the MS occupies the TCH (traffic
channel) to the granularity period. The duration for which the MS occupies the TCH is equalto the number of measurement reports from the MS on the TCH multiplied by the reporting
period 0.48 second.
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference
1-16 Huawei Technologies Proprietary Issue 03 (2007-05-09)
Trigger Point
None.
Formula
Traffic Volume on TCH per BSC (Traffic Channel)=∑<
=
N i
i 0
Traffic Volume of TCHs
This counter is the sum of the predefined counter Traffic Volume of TCHs in all the cellscontrolled by a BSC.
1.2.25 Available TCHs per BSC
Counter
ZK3015: Available TCHs per BSC
Meaning
This counter measures the number of TCHs in idle or busy state in all the cells controlled by a
BSC. Here, the TCHs exclude the TCHs changed to SDCCHs through dynamic adjustment but include the TCHs obtained from PDCHs through dynamic adjustment. This counter isequal to the total number of available TCHs divided by the number of sample points.
Trigger Point
None.
Formula
Available TCHs per BSC =∑<
=
N i
i 0
Mean Number of Available Channels (TCH)
This counter is the sum of the predefined counter Mean Number of Available Channels (TCH)in all the cells controlled by a BSC.
1.2.26 Configured TCHs per BSC
Counter
ZK3016: Configured TCHs per BSC
Meaning
This counter measures the number of TCHs configured for all the cells controlled by a BSC.
Here, the TCHs exclude the TCHs changed to SDCCHs through dynamic adjustment butinclude the TCHs obtained from PDCHs through dynamic adjustment. This counter is equal to
the total number of configured TCHs divided by the number of sample points.
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference 1 BSC Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 1-17
Trigger Point
None.
Formula
Configured TCHs per BSC=∑<
=
N i
i 0
Mean Number of Dynamically Configured Channels (TCH)
This counter is the sum of the predefined counter Mean Number of Dynamically ConfiguredChannels (TCH) in all the cells controlled by a BSC.
1.2.27 Call Setup Indications per BSC (CS Service)
Counter
ZCA303J: Call Setup Indications per BSC (CS Service)
Meaning
This counter measures the number of call setup indications received by all the cells in a BSC
during CS services in immediate assignment procedures.
Trigger Point
None.
Formula
Call Setup Indications per BSC (CS Service)=∑<
=
N i
i 0
Call Setup Indications (Circuit Service)
This counter is the sum of the predefined counter Call Setup Indications (Circuit Service) in
all the cells controlled by a BSC.
1.2.28 Random Access Success Ratio per BSC
Counter
ZTR101A: Random Access Success Ratio per BSC
Meaning
This counter measures the success rate of random access in a BSC, that is, the success rate of
immediate assignment procedures in a BSC.
Trigger Point
None.
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1 BSC Measurement
HUAWEI BSC6000 Base Station Controller
Performance Counter Reference
1-18 Huawei Technologies Proprietary Issue 03 (2007-05-09)
Formula
Random Access Success Ratio per BSC = ([Immediate Assignment Commands per
BSC]/[Immediate Assignment Requests per BSC])*{100}
1.2.29 TCH Assignment Success Ratio per BSC
Counter
ZTR102A: TCH Assignment Success Ratio per BSC
Meaning
This counter measures the success rate of TCH assignment procedures in a BSC.
Trigger Point
None.
Formula
TCH Assignment Success Ratio per BSC = ([∑<
=
N i
i 0
Successful Assignments]/[∑<
=
N i
i 0
Assignment
Requests])*{100}
1.2.30 Congestion Ratio on SDCCH per BSC
Counter
ZTR103A: Congestion Ratio on SDCCH per BSC
Meaning
This counter measures the ratio of the number of times no SDCCH is available for assignment
to the total number of SDCCH requests in a BSC.
Trigger Point
None.
Formula
Congestion Ratio on SDCCH per BSC = ([Failed SDCCH Seizures due to Busy SDCCH per
BSC]/[ SDCCH Seizure Requests per BSC])*{100}
1.2.31 Call Drop Ratio on SDCCH per BSC
Counter
ZTR104A: Call Drop Ratio on SDCCH per BSC
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference 1 BSC Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 1-19
Meaning
This counter measures the ratio of the number of call drops on the SDCCH to the number of
successful SDCCH requests in a BSC.
Trigger Point
None.
Formula
Call Drop Ratio on SDCCH per BSC = ([Call Drops on SDCCH per BSC]/[ Successful
SDCCH Seizures per BSC])*{100}
1.2.32 SDCCH Availability per BSC
Counter
ZTR105A: SDCCH Availability per BSC
Meaning
This counter measures the ratio of the number of the available SDCCHs to the number of the
configured SDCCHs in a BSC.
Trigger Point
None.
Formula
SDCCH Availability per BSC = ([Available SDCCHs per BSC]/[ Configured SDCCHs per
BSC])*{100}
1.2.33 Congestion Ratio on TCH per BSC
Counter
ZTR106A: Congestion Ratio on TCH per BSC
Meaning
This counter measures the ratio of the number of times no TCH is available for assignment in
situations such as call setup, handovers, and very early assignment procedures to the total
number of TCH requests in a BSC.
Trigger Point
None.
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Performance Counter Reference
1-20 Huawei Technologies Proprietary Issue 03 (2007-05-09)
Formula
Congestion Ratio on TCH per BSC = (([Failed TCH Seizures due to Busy TCH per BSC
(Signaling Channel)]+[ Failed TCH Seizures due to Busy TCH per BSC (Traffic
Channel)]+[ Failed TCH Seizures in TCH Handovers due to Busy TCH per BSC (Traffic
Channel)])/([TCH Seizure Requests per BSC (Signaling Channel)]+[ TCH Seizure Requests per BSC (Traffic Channel)]+[ TCH Seizure Requests in TCH Handovers per BSC (TrafficChannel)]))*{100}
1.2.34 Call Drop Ratio on TCH per BSC
Counter
ZTR107A: Call Drop Ratio on TCH per BSC
Meaning
This counter measures the ratio of the number of call drops on the TCH in situations such ascall setup and handovers to the number of successful TCH requests in a BSC.
Trigger Point
None.
Formula
Call Drop Ratio on TCH per BSC =[ Call Drops on TCH]/( [Successful TCH Seizures (Traffic
Channel)]+[Successful TCH Seizures in TCH handovers per BSC (Traffic Channel)])*{100}
1.2.35 Traffic Call Drop Ratio on TCH per BSC
Counter
ZTR108A: Traffic Call Drop Ratio on TCH per BSC
Meaning
This counter measures the ratio of the number of traffic call drops on the TCH in situations
such as call setup and handovers to the number of successful TCH requests in a BSC.
Trigger Point
None.
Formula
Traffic Call Drop Ratio on TCH per BSC = {60}*[Traffic Volume on TCH per BSC (Traffic
Channel)]/([Call Drops on TCH in Stable State per BSC (Traffic Channel)]+[ Call Drops inTCH Handovers per BSC (Traffic Channel)])
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference 1 BSC Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 1-21
1.2.36 TCH Availability per BSC
Counter
ZTR109A: TCH Availability per BSC
Meaning
This counter measures the ratio of the number of the available TCHs to the number of the
configured TCHs in a BSC.
Trigger Point
None.
FormulaTCH Availability per BSC = ([Available TCHs per BSC]/[ Configured TCHs per BSC])*{100}
1.2.37 Call Setup Success Ratio per BSC (Immediate Assignment)
Counter
ZTR110A: Call Setup Success Ratio per BSC (Immediate Assignment)
Meaning
This counter measures the ratio of the number of call setup indications (CS service) to thenumber of immediate assignment requests in a BSC.
Trigger Point
None.
Formula
Call Setup Success Ratio per BSC (Immediate Assignment) = ([Call Setup Indications perBSC (CS Service)]/[ Immediate Assignment Requests per BSC])*{100}
1.3 TRX Measurement per BSC
1.3.1 Overview
TRX Measurement per BSC refers to the measurement of the number of configured TRXs,the number of available TRXs, the TRX availability in a BSC.
Table 1-3 lists the counters of TRX Measurement per BSC.
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Performance Counter Reference
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Table 1-3 Counters of TRX Measurement per BSC
Counter Section
ZR460: Number of Configured TRXs per BSC 1.3.2
ZR461: Number of Available TRXs per BSC 1.3.3
ZR462: TRX Availability per BSC 1.3.4
1.3.2 Number of Configured TRXs per BSC
Counter
ZR460: Number of Configured TRXs per BSC
Meaning
This counter measures the number of configured TRXs in all the cells controlled by a BSC.
Trigger Point
None.
Formula
None.
1.3.3 Number of Available TRXs per BSC
Counter
ZR461: Number of Available TRXs per BSC
Meaning
This counter measures the number of available TRXs in all the cells controlled by a BSC.
Trigger Point None.
Formula
None.
1.3.4 TRX Availability per BSC
Counter
ZR462: TRX Availability per BSC
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Performance Counter Reference 1 BSC Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 1-23
Meaning
This counter measures the ratio of the number of the available TRXs to the number of the
configured TRXs in a BSC.
Trigger Point
None.
Formula
TRX Availability per BSC = ([Number of Available TRXs per BSC]/[ Number of Configured
TRXs per BSC])*{100}
1.4 Call Measurement per BSC1.4.1 Overview
Call Measurement per BSC refers to the measurement of call services in a BSC.
Table 1-4 lists the counters of Call Measurement per BSC.
Table 1-4 Counters of Call Measurement per BSC
Counter Section
ZA3050: MSC Rejects in Response to the CM Service Requests from the MS
per BSC (Congestion)
1.4.2
ZA3051: MSC Rejects in Response to the CM Service Requests from the MS per BSC (Network Failure)
1.4.3
ZA3052: MSC Rejects in Response to the CM Service Requests from the MS
per BSC (Illegal MS)
1.4.4
ZA3053: MSC Rejects in Response to the CM Service Requests from the MS
per BSC (Other Causes)
1.4.5
ZTA300A: Mean Interval between Random Access Attempts per BSC (MOC) 1.4.6
ZTA300H: Mean Interval between Random Access Attempts per BSC (PS Call) 1.4.7
ZTA330: Paging Requests on the Abis Interface per BSC (CS Service) 1.4.8
ZTA3030C: Successful Pagings on the Abis Interface per BSC (CS Service) 1.4.9
ZTL3188C: PCH Overloads due to CS Service Counted Through the Indicationsfrom the Abis Interface per BSC
1.4.10
ZTL3188B: RACH Overloads due to CS Service Counted Through theIndications from the Abis Interface per BSC
1.4.11
ZTA331: Paging Requests on the Abis Interface per BSC (PS Service) 1.4.12
ZTL3188D: Immediate Assignment Requests per BSC (PS Service) 1.4.13
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Counter Section
ZTA308H: Mean Interval between Random Access Attempts per BSC (PSService)
1.4.14
ZTA301H: Immediate Assignment Commands per BSC (PS Service) 1.4.15
1.4.2 MSC Rejects in Response to the CM Service Requests fromthe MS per BSC (Congestion)
Counter
ZA3050: MSC Rejects in Response to the CM Service Requests from the MS per BSC(Congestion)
Meaning
In the immediate assignment procedure where an MS requests for connection setup, the MSestablishes an RR connection with the BSS first, and then sends a CM SERV REQ message
on the MM layer. The BSS transparently transmits this message to the NSS. If the NSS doesnot support or cannot respond to the service request because of congestion, the MSC sends a
CM SERV REJ message to the MS and the BSC transparently transmits this message.
Trigger Point
None.
Formula
None.
1.4.3 MSC Rejects in Response to the CM Service Requests fromthe MS per BSC (Network Failure)
Counter
ZA3051: MSC Rejects in Response to the CM Service Requests from the MS per BSC
(Network Failure)
Meaning
After receiving a CM SERVICE REQUEST message sent on the MM layer from an MS, the
MSC sends a CM SERVICE REJECT message to the MS if the MSC cannot respond to theCM service request because of a network failure. The CM SERVICE REJECT message
carries the reject cause of Network Failure.
Trigger Point
None.
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Formula
None.
1.4.4 MSC Rejects in Response to the CM Service Requests fromthe MS per BSC (Illegal MS)
Counter
ZA3052: MSC Rejects in Response to the CM Service Requests from the MS per BSC
(Illegal MS)
Meaning
After receiving a CM SERVICE REQUEST message sent on the MM layer from an MS, the
MSC sends a CM SERVICE REJECT message to the MS if the MSC does not respond to theCM service request because the MSC cannot identify the MS. The CM SERVICE REJECT
message carries the reject cause of Illegal MS.
Trigger Point
None.
Formula
None.
1.4.5 MSC Rejects in Response to the CM Service Requests fromthe MS per BSC (Other Causes)
Counter
ZA3053: MSC Rejects in Response to the CM Service Requests from the MS per BSC (Other
Causes)
Meaning
After receiving a CM SERVICE REQUEST message sent on the MM layer from an MS, the
MSC sends a CM SERVICE REJECT message to the MS if the MSC does not respond to theCM service request for causes except for those mentioned previously.
Trigger Point
None.
Formula
None.
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Performance Counter Reference
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1.4.6 Mean Interval between Random Access Attempts per BSC(MOC)
CounterZTA300A: Mean Interval between Random Access Attempts per BSC (MOC)
Meaning
This counter measures the mean time interval (seconds) between two consecutive channel
requests (MOC) in a granularity period in a BSC.
Trigger Point
None.
Formula
Mean Interval between Random Access Attempts per BSC (MOC) = {[GP]*60}/∑<
=
N i
i 0
Channel
Requests (MOC)
1.4.7 Mean Interval between Random Access Attempts per BSC(PS Call)
CounterZTA300H: Mean Interval between Random Access Attempts per BSC (PS Call)
Meaning
This counter measures the mean time interval (seconds) between two consecutive channel
requests (PS call) in a granularity period in a BSC.
Trigger Point
None.
Formula
Mean Interval between Random Access Attempts per BSC (PS Call) = {[GP]*60}/ ∑<
=
N i
i 0
Channel Requests (Packet Call)
1.4.8 Paging Requests on the Abis Interface per BSC (CS Service)
Counter
ZTA330: Paging Requests on the Abis Interface per BSC (CS Service)
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Performance Counter Reference 1 BSC Measurement
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Meaning
This counter measures the number of paging request (CS service) on the Abis interface in all
the cells controlled by a BSC.
Trigger Point
None.
Formula
Delivered Paging Messages on the Abis Interface per BSC (CS Service) = ∑<
=
N i
i 0
Delivered
Paging Messages for CS Service
1.4.9 Successful Pagings on the Abis Interface per BSC (CSService)
Counter
ZTA3030C: Successful Pagings on the Abis Interface per BSC (CS Service)
Meaning
This counter measures the number of successful pagings (CS service) on the Abis interface in
all the cells controlled by a BSC.
Trigger Point
None.
Formula
Successful Pagings on the Abis Interface per BSC (CS Service)= ∑<
=
N i
i 0
Call Setup Indications
(MTC) (SDCCH) +∑<
=
N i
i 0
Call Setup Indications (MTC) (TCHF)+∑<
=
N i
i 0
Call Setup Indications
(MTC) (TCHH)
1.4.10 PCH Overloads due to CS Service Counted Through theIndications from the Abis Interface per BSC
Counter
ZTL3188C: PCH Overloads due to CS Service Counted Through the Indications from theAbis Interface per BSC
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1 BSC Measurement
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Performance Counter Reference
1-28 Huawei Technologies Proprietary Issue 03 (2007-05-09)
Meaning
This counter measures the number of PCH overloads (CS service) on the Abis interface in all
the cells controlled by a BSC.
Trigger Point
None.
Formula
PCH Overloads due to CS Service Counted Through the Indications from the Abis Interface
per BSC =∑<
=
N i
i 0
MSG CCCH LOAD IND (PCH) Messages Sent on Abis Interface
1.4.11 RACH Overloads due to CS Service Counted Through theIndications from the Abis Interface per BSC
Counter
ZTL3188B: RACH Overloads due to CS Service Counted Through the Indications from the
Abis Interface per BSC
Meaning
This counter measures the number of RACH overloads (CS service) on the Abis interface in
all the cells controlled by a BSC.
Trigger Point
None.
Formula
RACH Overloads due to CS Service Counted Through the Indications from the Abis Interface
per BSC =∑<
=
N i
i 0
MSG CCCH LOAD IND (RACH) Messages Sent on Abis Interface
1.4.12 Paging Requests on the Abis Interface per BSC (PS Service)
Counter
ZTA331: Paging Requests on the Abis Interface per BSC (PS Service)
Meaning
This counter measures the number of paging request (PS service) on the Abis interface in all
the cells controlled by a BSC.
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference 1 BSC Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 1-29
Trigger Point
None.
Formula
Delivered Paging Messages on the Abis Interface per BSC (PS Service )= ∑<
=
N i
i 0
Delivered
Paging Messages for PS Service
1.4.13 PCH Overloads due to PS Service Counted through theIndications from the Abis Interface per BSC
Counter
ZTL3188D: PCH Overloads due to PS Service Counted through the Indications from the AbisInterface per BSC
Meaning
This counter measures the number of PCH overloads (PS service) on the Abis interface in all
the cells controlled by a BSC.
Trigger Point
None.
Formula
Immediate Assignment Requests per BSC (PS Service)=∑<
=
N i
i 0
PACKET CCCH LOAD IND
Messages Sent on Abis Interface
1.4.14 Immediate Assignment Requests per BSC (PS Service)
Counter
ZTA308H: Immediate Assignment Requests per BSC (PS Service)
Meaning
This counter measures the number of immediate assignment requests (PS service) in all the
cells controlled by a BSC.
Trigger Point
None.
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1 BSC Measurement
HUAWEI BSC6000 Base Station Controller
Performance Counter Reference
1-30 Huawei Technologies Proprietary Issue 03 (2007-05-09)
Formula
Mean Interval between Random Access Attempts per BSC (PS Call)=∑<
=
N i
i 0
Channel Requests
(Packet Call)
1.4.15 Immediate Assignment Commands per BSC (PS Service)
Counter
ZTA301H: Immediate Assignment Commands per BSC (PS Service)
Meaning
This counter measures the number of immediate assignment commands (PS service) in all the
cells controlled by a BSC.
Trigger Point
None.
Formula
Immediate Assignment Commands per BSC (PS Service)=∑<
=
N i
i 0
Immediate Assignment
Commands (Packet Service)
1.5 Assignment Measurement per BSC
1.5.1 Overview
Assignment Measurement per BSC refers to the measurement of successful and failed
assignment procedures in a BSC.
Table 1-5 lists the counters of Assignment Measurement per BSC.
Table 1-5 Counters of Assignment Measurement per BSC
Counter Section
ZA3129I: Failed Assignments per BSC (Invalid State) 1.5.2
ZA3129J: Failed Assignments per BSC (Invalid Message) 1.5.3
ZTA3129J: Failed Assignments per BSC (Channel Unavailable) 1.5.4
ZTA312A: Failed Assignments per BSC (Requested Terrestrial ResourceUnavailable)
1.5.5
ZTA312K: Failed Assignments per BSC (Terrestrial Resource Already
Allocated)
1.5.6
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Performance Counter Reference 1 BSC Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 1-31
Counter Section
ZTA312L: Failed Assignments per BSC (Equipment Failure) 1.5.7
ZTA312M: Failed Assignments per BSC (Reconnection to Old Channels) 1.5.8
ZTCA312: Failed Assignments per BSC (Timer Expired) 1.5.9
ZTK3011A: Failed Assignments per BSC (Other Causes) 1.5.10
ZTA3129E: CHAN ACT NACK Messages Sent by BTS in ImmediateAssignment Procedure per BSC
1.5.11
ZTA3159E: Channel Activation Timeouts in Immediate Assignment Procedure per BSC
1.5.12
1.5.2 Failed Assignments per BSC (Invalid State)
Counter
ZA3129I: Failed Assignments per BSC (Invalid State)
Meaning
In an assignment procedure, the MSC sends an ASS REQ message to the BSS, and then theBSS selects a traffic channel or a signaling channel. The assignment procedure may fail
because of different factors.
This counter measures the number of failed assignments in a BSC because of invalid states.
Trigger Point
None.
Formula
None.
1.5.3 Failed Assignments per BSC (Invalid Message)
Counter
ZA3129J: Failed Assignments per BSC (Invalid Message)
Meaning
In an assignment procedure, the MSC sends an ASS REQ message to the BSS, and then theBSS selects a traffic channel or a signaling channel. The assignment procedure may fail
because of different factors.
This counter measures the number of failed assignments in a BSC because of invalidmessages.
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1 BSC Measurement
HUAWEI BSC6000 Base Station Controller
Performance Counter Reference
1-32 Huawei Technologies Proprietary Issue 03 (2007-05-09)
Trigger Point
None.
Formula None.
1.5.4 Failed Assignments per BSC (Channel Unavailable)
Counter
ZTA3129J: Failed Assignments per BSC (Channel Unavailable)
Meaning
In an assignment procedure, the MSC sends an ASS REQ message to the BSS, and then theBSS selects a traffic channel or a signaling channel. The assignment procedure may fail because of different factors.
This counter measures the number of failed assignments in a BSC because channels are
unavailable.
Trigger Point
None.
Formula
Failed Assignments per BSC (Channel Unavailable) =∑<
=
N i
i 0
Failed TCH Seizures due to Busy
TCH (Traffic Channel)
1.5.5 Failed Assignments per BSC (Terrestrial ResourceUnavailable)
Counter
ZTA312A: Failed Assignments per BSC (Terrestrial Resource Unavailable)
Meaning
In an assignment procedure, the MSC sends an ASS REQ message to the BSS, and then the
BSS selects a traffic channel or a signaling channel. The assignment procedure may fail
because of different factors.
This counter measures the number of failed assignments in a BSC because the terrestrialresources are unavailable.
Trigger Point
None.
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Performance Counter Reference 1 BSC Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 1-33
Formula
Failed Assignments per BSC (Terrestrial Resource Unavailable) = ∑<
=
N i
i 0
Failed Assignments
(CIC Unavailable)+∑<
=
N i
i 0
Failed Mode Modify Attempts (CIC Unavailable)
1.5.6 Failed Assignments per BSC (Terrestrial Circuit AlreadyAllocated)
Counter
ZTA312K: Failed Assignments per BSC (Terrestrial Circuit Already Allocated)
Meaning
In an assignment procedure, the MSC sends an ASS REQ message to the BSS, and then the
BSS selects a traffic channel or a signaling channel. The assignment procedure may fail because of different factors.
This counter measures the number of failed assignments in a BSC because the terrestrial
circuit is already allocated.
Trigger Point
None.
Formula
Failed Assignments per BSC (Terrestrial Circuit Already Allocated) = ∑<
=
N i
i 0
Failed
Assignments (CIC Allocated)+∑<
=
N i
i 0
Failed Mode Modify Attempts (CIC Allocated)
1.5.7 Failed Assignments per BSC (Equipment Failure)
CounterZTA312L: Failed Assignments per BSC (Equipment Failure)
Meaning
In an assignment procedure, the MSC sends an ASS REQ message to the BSS, and then the
BSS selects a traffic channel or a signaling channel. The assignment procedure may fail
because of different factors.
This counter measures the number of failed assignments in a BSC because of equipmentfailures.
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Performance Counter Reference
1-34 Huawei Technologies Proprietary Issue 03 (2007-05-09)
Trigger Point
None.
Formula
Failed Assignments per BSC (Equipment Failure) = [∑<
=
N i
i 0
Failed Assignments (A Interface
Failure)]+ [∑<
=
N i
i 0
Failed Mode Modify Attempts (A Interface Failure)]+ [∑<
=
N i
i 0
Failed
Assignments (First Assignment, Terrestrial Resource Request Failed)]+ [∑<
=
N i
i 0
Failed
Assignments (Reconnection to Old Channels, Terrestrial Resource Request Failed)]+
[∑<
=
N i
i 0
Failed Mode Modify Attempts (Terrestrial Resource Request Failed)]
1.5.8 Failed Assignments per BSC (Reconnection to Old Channels)
Counter
ZTA312M: Failed Assignments per BSC (Reconnection to Old Channels)
Meaning
In an assignment procedure, the MSC sends an ASS REQ message to the BSS, and then the
BSS selects a traffic channel or a signaling channel. The assignment procedure may fail because of different factors.
This counter measures the number of failed assignments in a BSC because of reconnections to
old channels.
Trigger Point
None.
Formula
Failed Assignments per BSC (Reconnection to Old Channels) = ∑<
=
N i
i 0
Failed Assignments
(Reconnection to Old Channels, Reconnection to Old Channel in Assignment)]+ [∑<
=
N i
i 0
Failed
Assignments (Reconnection to Old Channels, Reconnection to Old Channel in DirectedRetry)]
1.5.9 Failed Assignments per BSC (Timer Expired)
Counter
ZTCA312: Failed Assignments per BSC (Timer Expired)
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Performance Counter Reference 1 BSC Measurement
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Meaning
In an assignment procedure, the MSC sends an ASS REQ message to the BSS, and then the
BSS selects a traffic channel or a signaling channel. The assignment procedure may fail
because of different factors.
This counter measures the number of failed assignments in a BSC because the timer expired.
Trigger Point
None.
Formula
Failed Assignments per BSC (Timer Expired) = [∑<
=
N i
i 0
Failed Assignments (First Assignment,
Assignment Timed Out)]+ [∑<
=
N i
i 0
Failed Assignments (First Assignment, Directed Retry Timed
Out)]+ [∑<
=
N i
i 0
Failed Assignments (Reconnection to Old Channels, Timer Expired in
Assignment)]+ [∑<
=
N i
i 0
Failed Assignments (Reconnection to Old Channels, Timer Expired in
Directed Retry)]+ [∑<
=
N i
i 0
Failed Mode Modify Attempts (Timer Expired)]
1.5.10 Failed Assignments per BSC (Other Causes)
Counter
ZTK3011A: Failed Assignments per BSC (Other Causes)
Meaning
In an assignment procedure, the MSC sends an ASS REQ message to the BSS, and then the
BSS selects a traffic channel or a signaling channel. The assignment procedure may fail because of different factors.
This counter measures the number of failed assignments in a BSC because of other factors.
Trigger Point
None.
Formula
Failed Assignments per BSC (Other Causes) = [∑<
=
N i
i 0
Failed Assignments (Clear Commands
Sent By MSC)]+ [∑
<
=
N i
i 0 Failed Mode Modify Attempts (Clear Commands Sent By MSC)]
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Performance Counter Reference
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1.5.11 CHAN ACT NACK Messages Sent by BTS in ImmediateAssignment Procedure per BSC
CounterZTA3129E: CHAN ACT NACK Messages Sent by BTS in Immediate Assignment Procedure
per BSC
Meaning
In a TCH immediate assignment procedure, the BSC sends a CHAN ACTIV message to the
BTS. If the BTS returns a CHAN ACTIV NACK message, the TCH activation fails. The BSCmeasures the counter CHAN ACTIV NACK Messages Sent by BTS in Immediate
Assignment Procedure (TCHF) or the counter CHAN ACTIV NACK Messages Sent by BTS
in Immediate Assignment Procedure (TCHH) in the cell where the TCH is located.
This counter contains the counters described previously in all the cells controlled by a BSC.
Trigger Point
None.
Formula
CHAN ACT NACK Messages Sent by BTS in Immediate Assignment Procedure per BSC=
[∑<
=
N i
i 0
CHAN ACTIV NACK Messages Sent by BTS in Assignment Procedure (TCHF)]+
[∑<
=
N i
i 0
CHAN ACTIV NACK Messages Sent by BTS in Assignment Procedure (TCHH)]+
[∑<
=
N i
i 0
CHAN ACTIV NACK Messages Sent by BTS in Mode Modify Procedure (TCHF)]+
[∑<
=
N i
i 0
CHAN ACTIV NACK Messages Sent by BTS in Mode Modify Procedure (TCHH)]
1.5.12 Channel Activation Timeouts in Immediate AssignmentProcedure per BSC
Counter
ZTA3159E: Channel Activation Timeouts in Immediate Assignment Procedure per BSC
Meaning
In the TCH immediate assignment procedure, the BSC sends a CHAN ACTIV message to theBTS and triggers an internal timer. If no CHAN ACTIV ACK message is received within
scheduled time (five seconds by default), the BSC measures the counter Channel Activation
Timeouts in Immediate Assignment Procedure (TCHF) or the counter Channel ActivationTimeouts in Immediate Assignment Procedure (TCHH) in the cell where the TCH is located.
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Performance Counter Reference 1 BSC Measurement
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This counter contains the counters described previously in all the cells controlled by a BSC.
Trigger Point
None.
Formula
Channel Activation Timeouts in Immediate Assignment Procedure per BSC= [∑<
=
N i
i 0
Channel
Activation Timeouts in Assignment Procedure (TCHF)]+ [∑<
=
N i
i 0
Channel Activation Timeouts
in Assignment Procedure (TCHH)]+ [∑<
=
N i
i 0
Channel Activation Timeouts in Mode Modify
Procedure (TCHF)]+ [∑<
=
N i
i 0
Channel Activation Timeouts in Mode Modify Procedure (TCHH)]
1.6 Call Drop Measurement per BSC
1.6.1 Overview
Call Drop Measurement per BSC refers to the measurement of call drops in a BSC.
Table 1-6 lists the counters of Call Drop Measurement per BSC.
Table 1-6 Counters of Call Drop Measurement per BSC
Counter Section
ZM318: Successful Connections per BSC (TCHF) (Traffic Channel) 1.6.2
ZM317: Call Drops after Answers per BSC (TCHF) (Traffic Channel) 1.6.3
ZTM328: Call Drops on TCH per BSC (Error Indication) 1.6.4
ZTM329: Call Drops on TCH per BSC (Connection Failure) 1.6.5
ZTM330: Call Drops on TCH per BSC (Release Indication) 1.6.6
ZTM331: Call Drops on TCH per BSC (Abis Terrestrial Link Failure) 1.6.7
ZTM332: Call Drops on TCH per BSC (Forced Handover) 1.6.8
ZTM333: Call Drops on TCH per BSC (Other Causes) 1.6.9
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1.6.2 Successful Connections per BSC (TCHF) (Traffic Channel)
Counter
ZM318: Successful Connections per BSC (TCHF) (Traffic Channel)
Meaning
After a call is set up, the BSC receives the CONN message from the called MS and the
CONN ACK message from the calling MS if the called party answers. The BSC measures thenumber of successful connections.
This counter measures the number of successful connections on the TCHF in all the cells
controlled by a BSC.
Trigger Point
None.
Formula
None.
1.6.3 Call Drops after Answers per BSC (TCHF) (Traffic Channel)
Counter
ZM317: Call Drops after Answers per BSC (TCHF) (Traffic Channel)
Meaning
This counter measures the number of call drops after answers in a BSC. The counter measures
only the call drops after the assignment procedure is complete and the MS successfully seizesa TCHF.
Trigger Point
None.
Formula None.
1.6.4 Call Drops on TCH per BSC (Error Indication)
Counter
ZTM328: Call Drops on TCH per BSC (Error Indication)
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Performance Counter Reference 1 BSC Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 1-39
Meaning
After a call is set up on the TCH, the BTS sends an ERR IND message to the BSC if the radio
link layer incurs errors. Call drops occur on the Um interface.
This counter measures the number of call drops on the TCH in a BSC because the BSCreceives error indications.
Trigger Point
None.
Formula
Call Drops on TCH per BSC (Error Indication) = [∑<
=
N i
i 0
Call Drops due to ERR IND Received
on TCHF (Signaling Channel) in Stable State (T200 Expired)]+ [∑<
=
N i
i 0
Call Drops due to ERR
IND Received on SDCCH (Signaling Channel) in Stable State (Unsolicited DM Response)]+
[∑<
=
N i
i 0
Call Drops due to ERR IND Received on SDCCH (Signaling Channel) in Stable State
(Sequence Error)]+ [∑<
=
N i
i 0
Call Drops due to ERR IND Received on TCHH (Signaling
Channel) in Stable State (T200 Expired)]+ [∑<
=
N i
i 0
Call Drops due to ERR IND Received on
TCHH (Signaling Channel) in Stable State (Unsolicited DM Response)]+ [∑<
=
N i
i 0
Call Drops
due to ERR IND Received on TCHH (Signaling Channel) in Stable State (Sequence Error)]+
[∑<
=
N i
i 0
Call Drops due to ERR IND Received on TCHF (TCH) in Stable State (T200
Expired)]+ [∑<
=
N i
i 0
Call Drops due to ERR IND Received on TCHF (TCH) in Stable State
(Unsolicited DM Response)]+ [∑<
=
N i
i 0
Call Drops due to ERR IND Received on TCHF (TCH)
in Stable State (Sequence Error)]+ [∑<
=
N i
i 0
Call Drops due to ERR IND Received on TCHH
(TCH) in Stable State (T200 Expired)]+ [∑<
=
N i
i 0
Call Drops due to ERR IND Received on
TCHH (TCH) in Stable State (Unsolicited DM Response)]+ [∑<
=
N i
i 0
Call Drops due to ERR
IND Received on TCHH (TCH) in Stable State (Sequence Error)]
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1.6.5 Call Drops on TCH per BSC (Connection Failure)
Counter
ZTM329: Call Drops on TCH per BSC (Connection Failure)
Meaning
After a call is set up on the TCH, the BTS sends a CONN FAIL IND message to the BSC if
the radio link layer incurs errors or if hardware fails. Call drops occur on the Um interface.
This counter measures the number of call drops on the TCH in a BSC because the connectionfails.
Trigger Point
None.
Formula
Call Drops on TCH per BSC (Connection Failure) = [∑<
=
N i
i 0
Call Drops due to CONN FAIL
Received on TCHF (Signaling Channel) in Stable State (Radio Link Failure)]+ [∑<
=
N i
i 0
Call
Drops due to CONN FAIL Received on TCHF (Signaling Channel) in Stable State (HO
Access Failure)]+ [∑<
=
N i
i 0
Call Drops due to CONN FAIL Received on TCHF (Signaling
Channel) in Stable State (OM Intervention)]+ [∑<
=
N i
i 0
Call Drops due to CONN FAIL Received
on TCHF (Signaling Channel) in Stable State (Radio Resource Unavailable)]+ [∑<
=
N i
i 0
Call
Drops due to CONN FAIL Received on TCHF (Signaling Channel) in Stable State (Other
Causes)]+ [∑<
=
N i
i 0
Call Drops due to CONN FAIL Received on TCHH (Signaling Channel) in
Stable State (Radio Link Failure)]+ [∑<
=
N i
i 0
Call Drops due to CONN FAIL Received on TCHH
(Signaling Channel) in Stable State (HO Access Failure)]+ [∑<
=
N i
i 0
Call Drops due to CONN
FAIL Received on TCHH (Signaling Channel) in Stable State (OM Intervention)]+ [∑<
=
N i
i 0
Call
Drops due to CONN FAIL Received on TCHH (Signaling Channel) in Stable State (Radio
Resource Unavailable)]+ [∑<
=
N i
i 0
Call Drops due to CONN FAIL Received on TCHH (Signaling
Channel) in Stable State (Other Causes)]+ [∑<
=
N i
i 0
Call Drops due to CONN FAIL Received on
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Performance Counter Reference 1 BSC Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 1-41
TCHF (TCH) in Stable State (Radio Link Failure)]+ [∑<
=
N i
i 0
Call Drops due to CONN FAIL
Received on TCHF (TCH) in Stable State (HO Access Failure)]+ [∑<
=
N i
i 0
Call Drops due to
CONN FAIL Received on TCHF (TCH) in Stable State (OM Intervention)]+ [∑<
=
N i
i 0
Call Drops
due to CONN FAIL Received on TCHF (TCH) in Stable State (Radio Resource
Unavailable)]+ [∑<
=
N i
i 0
Call Drops due to CONN FAIL Received on TCHF (TCH) in Stable
State (Other Causes)]+ [∑<
=
N i
i 0
Call Drops due to CONN FAIL Received on TCHH (TCH) in
Stable State (Radio Link Failure)]+ [∑<
=
N i
i0
Call Drops due to CONN FAIL Received on TCHH
(TCH) in Stable State (HO Access Failure)]+ [∑<
=
N i
i 0
Call Drops due to CONN FAIL Received
on TCHH (TCH) in Stable State (OM Intervention)]+ [∑<
=
N i
i 0
Call Drops due to CONN FAIL
Received on TCHH (TCH) in Stable State (Radio Resource Unavailable)]+ [∑<
=
N i
i 0
Call Drops
due to CONN FAIL Received on TCHH (TCH) in Stable State (Other Causes)]
1.6.6 Call Drops on TCH per BSC (Release Indication)
Counter
ZTM330: Call Drops on TCH per BSC (Release Indication)
Meaning
In multiframe link setup state, the BTS sends a REL IND message to the BSC after receiving
a DISC frame from an MS. Call drops occur on the Um interface.
This counter measures the number of call drops on the TCH in a BSC because the BSCreceives release indications.
Trigger Point
None.
Formula
Call Drops on TCH per BSC (Release Indication) = [∑<
=
N i
i 0
Call Drops due to REL IND
Received on TCHF (Signaling Channel)]+ [∑<
=
N i
i0
Call Drops due to REL IND Received on
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Performance Counter Reference
1-42 Huawei Technologies Proprietary Issue 03 (2007-05-09)
TCHF (TCH)]+ [∑<
=
N i
i 0
Call Drops due to REL IND Received on TCHH (Signaling Channel)]+
[∑<
=
N i
i 0
Call Drops due to REL IND Received on TCHH (TCH)]
1.6.7 Call Drops on TCH per BSC (Abis Terrestrial Link Failure)
Counter
ZTM331: Call Drops on TCH per BSC (Abis Terrestrial Link Failure)
Meaning
After a call is set up on the TCH, a call drop occurs on the Um interface if the Abis terrestrial
link incurs an error.
This counter measures the number of call drops because the Abis terrestrial link incurs errors.
Trigger Point
None.
Formula
Call Drops on TCH per BSC (Abis Terrestrial Link Failure) = [∑<
=
N i
i 0
Call Drops due to Abis
Terrestrial Link Failure (TCHF) (Signaling Channel)]+ [∑<
=
N i
i 0
Call Drops due to Abis
Terrestrial Link Failure (TCHF) (TCH)]+ [∑<
=
N i
i 0
Call Drops due to Abis Terrestrial Link
Failure (TCHH) (Signaling Channel)]+ [∑<
=
N i
i 0
Call Drops due to Abis Terrestrial Link Failure
(TCHH) (TCH)]
1.6.8 Call Drops on TCH per BSC (Forced Handover)
Counter
ZTM332: Call Drops on TCH per BSC (Forced Handover)
Meaning
This counter measures the number of call drops on the TCH in a BSC because of forcedhandovers.
Trigger Point
None.
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Issue 03 (2007-05-09) Huawei Technologies Proprietary 1-43
Formula
Call Drops on TCH per BSC (Forced Handover) = [∑<
=
N i
i 0
Call Drops due to Forced Handover
(TCHF) (Signaling Channel)]+ [∑<
=
N i
i 0
Call Drops due to Forced Handover (TCHF) (TCH)]+
[∑<
=
N i
i 0
Call Drops due to Forced Handover (TCHH) (Signaling Channel)]+ [∑<
=
N i
i 0
Call Drops
due to Forced Handover (TCHH) (TCH)]
1.6.9 Call Drops on TCH per BSC (Other Causes)
Counter
ZTM333: Call Drops on TCH per BSC (Other Causes)
Meaning
This counter measures the number of call drops on the TCH in a BSC because of other factors,including no MRs from the MS, equipment failures, and resource check.
Trigger Point
None.
Formula
Call Drops on TCH per BSC (Other Causes) = [∑<
=
N i
i 0
Call Drops due to No MRs from MS for
a Long Time (TCHF) (Signaling Channel)]+ [∑<
=
N i
i 0
Call Drops due to No MRs from MS for a
Long Time (TCHF) (Traffic Channel)]+ [∑<
=
N i
i 0
Call Drops due to No MRs from MS for a Long
Time (TCHH) (Signaling Channel)]+ [∑<
=
N i
i 0
Call Drops due to No MRs from MS for a Long
Time (TCHH) (Traffic Channel)]+ [∑<
=
N i
i 0
Call Drops due to Equipment Failure (TCHF)
(Signaling Channel)]+ [∑<
=
N i
i 0
Call Drops due to Equipment Failure (TCHF) (Traffic
Channel)]+ [∑<
=
N i
i 0
Call Drops due to Equipment Failure (TCHH) (Signaling Channel)]+
[∑<
=
N i
i 0
Call Drops due to Equipment Failure (TCHH) (Traffic Channel)]+ [∑<
=
N i
i 0
Call Drops due
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference
1-44 Huawei Technologies Proprietary Issue 03 (2007-05-09)
to Resource Check (TCHF) (Signaling Channel)]+ [∑<
=
N i
i 0
Call Drops due to Resource Check
(TCHH) (Signaling Channel)]+ [∑<
=
N i
i 0
Call Drops due to Resource Check (TCHF) (Traffic
Channel)]+ [∑<
=
N i
i 0
Call Drops due to Resource Check (TCHH) (Traffic Channel)]
1.7 Handover Failure Measurement per BSC
1.7.1 Overview
Handover Failure Measurement per BSC refers to the measurement of handover failures
caused by different factors in a BSC. The handover may occur in a cell, in a BSC, betweenBSCs, or between the 2G system and the 3G system.
Table 1-7 lists the counters of Handover Failure Measurement per BSC.
Table 1-7 Counters of Handover Failure Measurement per BSC
Counter Section
ZCH902C: Failed Reconnections to Old Channels upon Intra-Cell Handover
Failure per BSC
1.7.2
ZCH902D: Successful Reconnections to Old Channels upon Intra-CellHandover Failure per BSC 1.7.3
ZCH912C: Failed Reconnections to Old Channels upon Internal Outgoing Cell
Handover Failure per BSC
1.7.4
ZCH912D: Successful Reconnections to Old Channels upon Internal Outgoing
Cell Handover Failure per BSC
1.7.5
ZCH932C: Failed Reconnections to Old Channels upon External Outgoing CellHandover Failure per BSC
1.7.6
ZCH932D: Successful Reconnections to Old Channels upon External OutgoingCell Handover Failure per BSC
1.7.7
ZH952C: Successful Reconnections to Old Channels upon Inter-RAT Outgoing
Cell Handover Failure per BSC
1.7.8
ZCH952D: Successful Reconnections to Old Channels upon Inter-RAT
Outgoing Cell Handover Failure per BSC
1.7.9
ZH942I: Failed External Incoming Cell Handovers per BSC (Illegal Message) 1.7.10
ZCH942A: Failed External Incoming Cell Handovers per BSC (ChannelUnavailable)
1.7.11
ZH942E: Failed External Incoming Cell Handovers per BSC (Requested
Territorial Resource Unavailable)
1.7.12
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference 1 BSC Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 1-45
Counter Section
ZH942F: Failed External Incoming Cell Handovers per BSC (Territorial
Resource Already Allocated)
1.7.13
ZH942B: Failed External Incoming Cell Handovers per BSC (EquipmentFailure)
1.7.14
ZCH9420C: Failed External Incoming Cell Handovers per BSC (TimerExpired)
1.7.15
ZH942H: Failed External Incoming Cell Handovers per BSC (Other Causes) 1.7.16
ZCR9350B: CHAN ACT NACK Messages Sent by BTS in External IncomingCell Handover Procedure per BSC
1.7.17
ZCR9350C: Channel Activation Timeouts in External Incoming Cell Handover
Procedure per BSC
1.7.18
1.7.2 Failed Reconnections to Old Channels upon Intra-CellHandover Failure per BSC
Counter
ZCH902C: Failed Reconnections to Old Channels upon Intra-Cell Handover Failure per BSC
Meaning
This counter measures the number of failed intra-cell handovers because the timer expires inall the cells controlled by a BSC.
The channel involved in the measurement is of the following types:
SDCCH
TCHF
TCHH
In an intra-cell handover procedure, the BSC sends an HO CMD message to the MS and starts
a timer to wait for an HO CMP message. The measurement is triggered when the timer
expires. The measurement is based on the channel type.
The intra-cell handover is of the following types:
Intra-cell handover requests in normal conditions
Intra-cell handover requests caused by dynamic channel conversion
Intra-cell handover requests in concentric cells
The causes for handover failures are as follows:
Channel unavailable
Terrestrial resource request failed
A-interface failure
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Performance Counter Reference
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Clear commands sent by MSC
Timer expired
Reconnection to old channels
The dynamic channel conversion is of the following types: TCHF to TCHH
TCHH to TCHF
TCH to SDCCH
SDCCH to TCH
The concentric cell handover is of the following types:
Underlaid subcell to overlaid subcell
Overlaid subcell to underlaid subcell
Along with Internal Intra-Cell Handover Requests per BSC and Internal Intra-Cell Handover
Commands per BSC, the counter shows the performance of intra-cell handovers in a BSC.
Trigger Point
None.
Formula
Failed Reconnections to Old Channels upon Intra-Cell Handover Failure per BSC=∑<
=
N i
i 0
Failed
Internal Intra-Cell Handovers (Timer Expired) (SDCCH)+∑
<
=
N i
i 0Failed Internal Intra-Cell
Handovers (Timer Expired) (TCHF) (Signaling Channel)+∑<
=
N i
i 0
Failed Internal Intra-Cell
Handovers (Timer Expired) (TCHH) (Signaling Channel)+∑<
=
N i
i 0
Failed Internal Intra-Cell
Handovers (Timer Expired) (TCHF) (Traffic Channel)+∑<
=
N i
i 0
Failed Internal Intra-Cell
Handovers (Timer Expired) (TCHH) (Traffic Channel)
1.7.3 Successful Reconnections to Old Channels upon Intra-CellHandover Failure per BSC
Counter
ZCH902D: Successful Reconnections to Old Channels upon Intra-Cell Handover Failure perBSC
Meaning
This counter measures the number of successful reconnections to old channels after the intra-
cell handover fails.
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Performance Counter Reference 1 BSC Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 1-47
The channel involved in the measurement is of the following types:
SDCCH
TCHF
TCHHIn an intra-cell handover procedure, the BSC sends an HO CMD message to the MS and starts
a timer to wait for an HO CMP message. If the MS reconnects to the old channel and reports ahandover failure message on the old channel before the timer expires, the BSC measures thenumber of successful reconnections to old channels based on the cause carried in the message.
The cause carried in the HO FAIL message may be one of the following:
Abnormal release, unspecified
Abnormal release, channel unacceptable
Abnormal release, timer expired
Abnormal release, no activity on the radio path
Preemptive release
Handover impossible, timing advance out of range
Channel mode unavailable
Frequency not implemented
Call already cleared
Semantically incorrect message
Invalid mandatory information
Message type non-existent or not implemented
Message type not compatible with protocol state
Conditional IE error)
No cell allocation available
Protocol error unspecified
Other
Trigger Point
None.
Formula
Successful Reconnections to Old Channels upon Intra-Cell Handover Failure per BSC =∑<
=
N i
i 0
Failed Internal Intra-Cell Handovers (Reconnection to Old Channels) (Abnormal Release,
Unspecified)+∑<
=
N i
i 0
Failed Internal Intra-Cell Handovers (Reconnection to Old Channels)
(Abnormal Release, Channel Unacceptable)+∑<
=
N i
i 0
Failed Internal Intra-Cell Handovers
(Reconnection to Old Channels) (Abnormal Release, Timer Expired)+∑<
=
N i
i 0
Failed Internal
Intra-Cell Handovers (Reconnection to Old Channels) (Abnormal Release, No Activity on the
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference
1-48 Huawei Technologies Proprietary Issue 03 (2007-05-09)
Radio Path)+∑<
=
N i
i 0
Failed Internal Intra-Cell Handovers (Reconnection to Old Channels)
(Preemptive Release)+∑<
=
N i
i 0
Failed Internal Intra-Cell Handovers (Reconnection to Old
Channels) (Handover Failed, Timing Advance out of Range)+∑<
=
N i
i 0
Failed Internal Intra-Cell
Handovers (Reconnection to Old Channels) (Channel Mode Unavailable)+∑<
=
N i
i 0
Failed Internal
Intra-Cell Handovers (Reconnection to Old Channels) (Frequency Unavailable)+∑<
=
N i
i 0
Failed
Internal Intra-Cell Handovers (Reconnection to Old Channels) (Call Already Cleared)+∑<
=
N i
i 0
Failed Internal Intra-Cell Handovers (Reconnection to Old Channels) (Semantically Incorrect
Message)+∑<
=
N i
i 0
Failed Internal Intra-Cell Handovers (Reconnection to Old Channels) (Invalid
Mandatory Information)+∑<
=
N i
i 0
Failed Internal Intra-Cell Handovers (Reconnection to Old
Channels) (Message Type Non-existent or Not Implemented)+∑<
=
N i
i 0
Failed Internal Intra-Cell
Handovers (Reconnection to Old Channels) (Message Type Not Compatible with Protocol
State)+∑<
=
N i
i 0
Failed Internal Intra-Cell Handovers (Reconnection to Old Channels)
(Conditional IE Error)+∑<
=
N i
i 0
Failed Internal Intra-Cell Handovers (Reconnection to Old
Channels) (No Cell Allocation Available)+∑<
=
N i
i 0
Failed Internal Intra-Cell Handovers
(Reconnection to Old Channels) (Protocol Error Unspecified)+∑<
=
N i
i 0
Failed Internal Intra-Cell
Handovers (Reconnection to Old Channels) (Other Causes)
1.7.4 Failed Reconnections to Old Channels upon Internal
Outgoing Cell Handover Failure per BSC
Counter
ZCH912C: Failed Reconnections to Old Channels upon Internal Outgoing Cell Handover
Failure per BSC
Meaning
This counter measures the number of failed internal outgoing cell handovers because the timer
expires in all the cells controlled by a BSC.
The channel involved in the measurement is of the following types:
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Performance Counter Reference 1 BSC Measurement
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SDCCH
TCHF
TCHH
In an internal outgoing cell handover procedure (including directed retry), the BSC measuresthis counter if the no HO CMP message is received within scheduled time. The measurement
is based on the channel type and the crossing of frequency bands in the source cell.
The crossing of frequency bands is of the following types:
900/850 to 900/850
1800/1900 to 1800/1900
900/850 to 1800/1900
1800/1900 to 900/850
Trigger Point
None.
Formula
Failed Reconnections to Old Channels upon Internal Outgoing Cell Handover Failure per
BSC=∑<
=
N i
i 0
Failed Outgoing Internal Inter-Cell Handovers (Timer Expired) (SDCCH)
(Excluding Directed Retry)+∑<
=
N i
i 0
Failed Outgoing Internal Inter-Cell Handovers (Timer
Expired) (TCHF) (Signaling Channel)+∑
<
=
N i
i 0
Failed Outgoing Internal Inter-Cell Handovers
(Timer Expired) (TCHH) (Signaling Channel)+∑<
=
N i
i 0
Failed Outgoing Internal Inter-Cell
Handovers (Timer Expired) (TCHF) (Traffic Channel)+∑<
=
N i
i 0
Failed Outgoing Internal Inter-
Cell Handovers (Timer Expired) (TCHH) (Traffic Channel)+∑<
=
N i
i 0
Failed Outgoing Internal
Inter-Cell Handovers (Timer Expired) (Directed Retry)
1.7.5 Successful Reconnections to Old Channels upon InternalOutgoing Cell Handover Failure per BSC
Counter
ZCH912D: Successful Reconnections to Old Channels upon Internal Outgoing Cell Handover
Failure per BSC
Meaning
This counter measures the number of successful reconnections to old channels after the
internal outgoing cell handover fails in all the cells controlled by a BSC.
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference
1-50 Huawei Technologies Proprietary Issue 03 (2007-05-09)
In an internal outgoing cell handover procedure, the BSC sends an HO CMD message in thesource cell to the MS and starts a timer to wait for an HO CMP message. If the MS reconnectsto the old channel and reports a HO FAIL message on the old channel before the timer expires,
the BSC measures the number of successful reconnections to old channels based on the causecarried in the message.
The crossing of frequency bands is of the following types:
900/850 to 900/850
1800/1900 to 1800/1900
900/850 to 1800/1900
1800/1900 to 900/850
The cause carried in the HO FAIL message may be one of the following:
Abnormal release, unspecified
Abnormal release, channel unacceptable
Abnormal release, timer expired
Abnormal release, no activity on the radio path
Preemptive release
Handover impossible, timing advance out of range
Channel mode unavailable
Frequency not implemented
Call already cleared
Semantically incorrect message
Invalid mandatory information
Message type non-existent or not implemented Message type not compatible with protocol state
Conditional IE error
No cell allocation available
Protocol error unspecified
Other
Trigger Point
None.
Formula
Successful Reconnections to Old Channels upon Internal Outgoing Cell Handover Failure per
BSC=∑<
=
N i
i 0
Failed Outgoing Internal Inter-Cell Handovers (Reconnection to Old Channels)
(Abnormal Release, Unspecified)+∑<
=
N i
i 0
Failed Outgoing Internal Inter-Cell Handovers
(Reconnection to Old Channels) (Abnormal Release, Channel Unacceptable)+∑<
=
N i
i 0
Failed
Outgoing Internal Inter-Cell Handovers (Reconnection to Old Channels) (Abnormal Release,
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Performance Counter Reference 1 BSC Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 1-51
Timer Expired)+∑<
=
N i
i 0
Failed Outgoing Internal Inter-Cell Handovers (Reconnection to Old
Channels) (Abnormal Release, No Activity on the Radio Path)+∑<
=
N i
i 0
Failed Outgoing Internal
Inter-Cell Handovers (Reconnection to Old Channels) (Preemptive Release)+∑<
=
N i
i 0
Failed
Outgoing Internal Inter-Cell Handovers (Reconnection to Old Channels) (Handover Failed,
Timing Advance out of Range)+∑<
=
N i
i 0
Failed Outgoing Internal Inter-Cell Handovers
(Reconnection to Old Channels) (Channel Mode Unavailable)+∑<
=
N i
i 0
Failed Outgoing Internal
Inter-Cell Handovers (Reconnection to Old Channels) (Frequency Unavailable)+∑<
=
N i
i0
Failed
Outgoing Internal Inter-Cell Handovers (Reconnection to Old Channels) (Call Already
Cleared)+∑<
=
N i
i 0
Failed Outgoing Internal Inter-Cell Handovers (Reconnection to Old Channels)
(Semantically Incorrect Message)+∑<
=
N i
i 0
Failed Outgoing Internal Inter-Cell Handovers
(Reconnection to Old Channels) (Invalid Mandatory Information)+∑<
=
N i
i 0
Failed Outgoing
Internal Inter-Cell Handovers (Reconnection to Old Channels) (Message Type Non-existent or
Not Implemented)+∑
<
=
N i
i 0Failed Outgoing Internal Inter-Cell Handovers (Reconnection to Old
Channels) (Message Type Not Compatible with Protocol State)+∑<
=
N i
i 0
Failed Outgoing Internal
Inter-Cell Handovers (Reconnection to Old Channels) (Conditional IE Error)+∑<
=
N i
i 0
Failed
Outgoing Internal Inter-Cell Handovers (Reconnection to Old Channels) (No Cell Allocation
Available)+∑<
=
N i
i 0
Failed Outgoing Internal Inter-Cell Handovers (Reconnection to Old
Channels) (Protocol Error Unspecified)+
∑
<
=
N i
i 0
Failed Outgoing Internal Inter-Cell Handovers
(Reconnection to Old Channels) (Other Causes)
1.7.6 Failed Reconnections to Old Channels upon ExternalOutgoing Cell Handover Failure per BSC
Counter
ZCH912C: Failed Reconnections to Old Channels upon External Outgoing Cell Handover
Failure per BSC
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1 BSC Measurement
HUAWEI BSC6000 Base Station Controller
Performance Counter Reference
1-52 Huawei Technologies Proprietary Issue 03 (2007-05-09)
Meaning
This counter measures the number of failed reconnections to old channels after the external
outgoing cell handover fails because the timer T8 expires.
The channel involved in the measurement is of the following types:
SDCCH
TCHF
TCHH
In an external outgoing cell handover procedure, the source BSC sends a HO CMD message
in the source cell to the MS and then triggers the timer T8 to wait for the CLR CMD messagefrom the MSC.
Along with External Outgoing Cell Handover Requests per BSC and External Outgoing Cell
Handover Commands per BSC, this counter shows the performance of external outgoing cellhandovers in a BSC. Along with the counters related to external incoming cell handovers, this
counter shows the performance of cell handovers between BSCs.
The crossing of frequency bands is of the following types:
900/850 to 900/850
1800/1900 to 1800/1900
900/850 to 1800/1900
1800/1900 to 900/850
The external outgoing cell handover also occurs during the handover between different
signaling points in a BSC.
Trigger Point
None.
Formula
Failed Reconnections to Old Channels upon Internal Outgoing Cell Handover Failure per
BSC=∑<
=
N i
i 0
Failed Outgoing Internal Inter-Cell Handovers (Timer Expired) (SDCCH)
(Excluding Directed Retry)+∑<
=
N i
i 0
Failed Outgoing Internal Inter-Cell Handovers (Timer
Expired) (TCHF) (Signaling Channel)+∑<
=
N i
i 0
Failed Outgoing Internal Inter-Cell Handovers
(Timer Expired) (TCHH) (Signaling Channel)+∑<
=
N i
i 0
Failed Outgoing Internal Inter-Cell
Handovers (Timer Expired) (TCHF) (Traffic Channel)+∑<
=
N i
i 0
Failed Outgoing Internal Inter-
Cell Handovers (Timer Expired) (TCHH) (Traffic Channel)+∑<
=
N i
i 0
Failed Outgoing Internal
Inter-Cell Handovers (Timer Expired) (Directed Retry)
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference 1 BSC Measurement
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1.7.7 Successful Reconnections to Old Channels upon ExternalOutgoing Cell Handover Failure per BSC
CounterZCH932D: Successful Reconnections to Old Channels upon External Outgoing Cell
Handover Failure per BSC
Meaning
This counter measures the number of successful reconnections to old channels after the
external outgoing cell handover fails.
The channel involved in the measurement is of the following types:
SDCCH
TCHF
TCHH
In an external outgoing cell handover procedure, the BSC sends an HO CMD message in thesource cell to the MS and starts a timer to wait for an HO CMP message. If the MS reconnects
to the old channel and reports an HO FAIL message on the old channel before the timerexpires, the BSC measures the number of successful reconnections to old channels in the
target cell. The measurement is based on the cause carried in the message.
The crossing of frequency bands is of the following types:
900/850 to 900/850
1800/1900 to 1800/1900 900/850 to 1800/1900
1800/1900 to 900/850
The external outgoing cell handover also occurs during the handover between different
signaling points in a BSC.
The cause carried in the message may be one of the following:
Abnormal release, unspecified
Abnormal release, channel unacceptable
Abnormal release, timer expired
Abnormal release, no activity on the radio path Preemptive release
Handover impossible, timing advance out of range
Channel mode unavailable
Frequency not implemented
Call already cleared
Semantically incorrect message
Invalid mandatory information
Message type non-existent or not implemented
Message type not compatible with protocol state
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference
1-54 Huawei Technologies Proprietary Issue 03 (2007-05-09)
Conditional IE error
No cell allocation available
Protocol error unspecified
Other
Trigger Point
None.
Formula
Successful Reconnections to Old Channels upon External Outgoing Cell Handover Failure per
BSC=∑<
=
N i
i 0
Failed Outgoing External Inter-Cell Handovers (Reconnection to Old Channels)
(Abnormal Release, Unspecified)+∑
<
=
N i
i 0Failed Outgoing External Inter-Cell Handovers
(Reconnection to Old Channels) (Abnormal Release, Channel Unacceptable)+∑<
=
N i
i 0
Failed
Outgoing External Inter-Cell Handovers (Reconnection to Old Channels) (Abnormal Release,
Timer Expired)+∑<
=
N i
i 0
Failed Outgoing External Inter-Cell Handovers (Reconnection to Old
Channels) (Abnormal Release, No Activity on the Radio Path)+∑<
=
N i
i 0
Failed Outgoing External
Inter-Cell Handovers (Reconnection to Old Channels) (Preemptive Release)+∑
<
=
N i
i 0Failed
Outgoing External Inter-Cell Handovers (Reconnection to Old Channels) (Handover Failed,
Timing Advance out of Range)+∑<
=
N i
i 0
Failed Outgoing External Inter-Cell Handovers
(Reconnection to Old Channels) (Channel Mode Unavailable)+∑<
=
N i
i 0
Failed Outgoing External
Inter-Cell Handovers (Reconnection to Old Channels) (Frequency Unavailable)+∑<
=
N i
i 0
Failed
Outgoing External Inter-Cell Handovers (Reconnection to Old Channels) (Call Already
Cleared)+∑<
=
N i
i 0
Failed Outgoing External Inter-Cell Handovers (Reconnection to Old Channels)
(Semantically Incorrect Message)+∑<
=
N i
i 0
Failed Outgoing External Inter-Cell Handovers
(Reconnection to Old Channels) (Invalid Mandatory Information)+∑<
=
N i
i 0
Failed Outgoing
External Inter-Cell Handovers (Reconnection to Old Channels) (Message Type Non-existent
or Not Implemented)+∑<
=
N i
i 0
Failed Outgoing External Inter-Cell Handovers (Reconnection to
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Performance Counter Reference 1 BSC Measurement
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Old Channels) (Message Type Not Compatible with Protocol State)+∑<
=
N i
i 0
Failed Outgoing
External Inter-Cell Handovers (Reconnection to Old Channels) (Conditional IE Error)+∑<
=
N i
i 0
Failed Outgoing External Inter-Cell Handovers (Reconnection to Old Channels) (No Cell
Allocation Available)+∑<
=
N i
i 0
Failed Outgoing External Inter-Cell Handovers (Reconnection to
Old Channels) (Protocol Error Unspecified)+∑<
=
N i
i 0
Failed Outgoing External Inter-Cell
Handovers (Reconnection to Old Channels) (Other Causes)
1.7.8 Failed Reconnections to Old Channels upon Inter-RATOutgoing Cell Handover Failure per BSC
Counter
ZH952C: Failed Reconnections to Old Channels upon Inter-RAT Outgoing Cell Handover
Failure per BSC
Meaning
This counter measures the number of failed reconnections to old channels after the inter-RAT
outgoing cell handover fails because the timer T8 expires.
The channel involved in the measurement is of the following types:
SDCCH
TCHF
TCHH
In an inter-RAT outgoing cell handover procedure (including directed retry), the BSC
measures this counter if the handover fails because the BSC receives no CLR CMD messagefrom the MSC within scheduled time (T8 expires).
The crossing of frequency bands is of the following types:
900/850 to 900/850
1800/1900 to 1800/1900
900/850 to 1800/1900
1800/1900 to 900/850
The external outgoing cell handover also occurs during the handover between different
signaling points in a BSC.
Trigger Point
None.
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Performance Counter Reference
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Formula
Failed Reconnections to Old Channels upon Inter-RAT Outgoing Cell Handover Failure per
BSC=∑<
=
N i
i 0
Failed Outgoing Inter-RAT Inter-Cell Handovers (T8 Expired)
This counter is the sum of the predefined counter Failed Outgoing Inter-RAT Inter-Cell
Handovers (T8 Expired) in all the cells controlled by a BSC.
1.7.9 Successful Reconnections to Old Channels upon Inter-RATOutgoing Cell Handover Failure per BSC
Counter
ZCH952D: Successful Reconnections to Old Channels upon Inter-RAT Outgoing Cell
Handover Failure per BSC
Meaning
This counter measures the number of successful reconnections to old channels after the inter-
RAT outgoing cell handover fails.
The channel involved in the measurement is of the following types:
SDCCH
TCHF
TCHH
In an inter-RAT outgoing cell handover procedure (excluding directed retry), the MS sends anHO FAIL message in the source cell to the source BSC if the MS fails to access the target celland successfully reconnects to the old channel in the source cell. The BSC measures thenumber of successful reconnections to old channels based on the RR cause carried in the HO
FAIL message.
The RR cause carried in the message may be one of the following:
Abnormal release, unspecified
Abnormal release, channel unacceptable
Abnormal release, timer expired
Abnormal release, no activity on the radio path
Preemptive release
Handover impossible, timing advance out of range
Channel mode unavailable
Frequency not implemented
Call already cleared
Semantically incorrect message
Invalid mandatory information
Message type non-existent or not implemented
Message type not compatible with protocol state
Conditional IE error
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No cell allocation available
Protocol error unspecified
Other
Trigger Point
None.
Formula
Successful Reconnections to Old Channels upon Inter-RAT Handover Failure per BSC=∑<
=
N i
i 0
Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to Old Channels) (Abnormal
Release, Unspecified)+∑<
=
N i
i 0
Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection
to Old Channels) (Abnormal Release, Channel Unacceptable)+∑<
=
N i
i 0
Failed Outgoing Inter-
RAT Inter-Cell Handovers (Reconnection to Old Channels) (Abnormal Release, Timer
Expired)+∑<
=
N i
i 0
Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to Old
Channels) (Abnormal Release, No Activity on the Radio Path))+∑<
=
N i
i 0
Failed Outgoing Inter-
RAT Inter-Cell Handovers (Reconnection to Old Channels) (Preemptive Release) +∑<
=
N i
i 0
Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to Old Channels) (Handover
Failed, Timing Advance out of Range) +∑<
=
N i
i 0
Failed Outgoing Inter-RAT Inter-Cell Handovers
(Reconnection to Old Channels) (Channel Mode Unavailable)+∑<
=
N i
i 0
Failed Outgoing Inter-
RAT Inter-Cell Handovers (Reconnection to Old Channels) (Frequency
Unavailable)+∑<
=
N i
i 0
Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to Old
Channels) (Call Already Cleared)+
∑
<
=
N i
i 0
Failed Outgoing Inter-RAT Inter-Cell Handovers
(Reconnection to Old Channels) (Semantically Incorrect Message)+∑<
=
N i
i 0
Failed Outgoing
Inter-RAT Inter-Cell Handovers (Reconnection to Old Channels) (Invalid Mandatory
Information)+∑<
=
N i
i 0
Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to Old
Channels) (Message Type Non-existent or Not Implemented)+∑<
=
N i
i 0
Failed Outgoing Inter-
RAT Inter-Cell Handovers (Reconnection to Old Channels) (Message Type Not Compatible
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with Protocol State)+∑<
=
N i
i 0
Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to
Old Channels) (Conditional IE Error)+∑<
=
N i
i 0
Failed Outgoing Inter-RAT Inter-Cell Handovers
(Reconnection to Old Channels) (No Cell Allocation Available)+∑<
=
N i
i 0
Failed Outgoing Inter-
RAT Inter-Cell Handovers (Reconnection to Old Channels) (Protocol Error
Unspecified)+∑<
=
N i
i 0
Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to Old
Channels) (Other Causes)
1.7.10 Failed External Incoming Cell Handovers per BSC (IllegalMessage)
Counter
ZH942I: Failed External Incoming Cell Handovers per BSC (Illegal Message)
Meaning
This counter measures the number of failed external incoming cell handovers caused by
illegal messages in all the cells controlled by a BSC. In an external incoming cell handover procedure, the target BSC receives an HO REQ message from the MSC and decodes themessage. When finding out that the message is not compliant with the protocol requirements
during the decoding, the BSC measures the number of failed external incoming cell handovers
based on the channel type, the crossing of frequency bands, and the failure cause.
The channel involved in the measurement may be an SDCCH or a TCH. The TCH may be a
traffic channel or a signaling channel.
The crossing of frequency bands is of the following types:
900/850 to 900/850
1800/1900 to 1800/1900
900/850 to 1800/1900
1800/1900 to 900/850
Along with External Incoming Cell Handover Requests per BSC and External Incoming CellHandover Commands per BSC, the counter shows the performance of external incoming cell
handovers. Along with the counters related to external outgoing cell handovers, the countershows the performance of the cell handovers between BSCs.
Trigger Point
None.
Formula
None.
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1.7.11 Failed External Incoming Cell Handovers per BSC (ChannelUnavailable)
CounterZCH942A: Failed External Incoming Cell Handovers per BSC (Channel Unavailable)
Meaning
This counter measures the number of failed external incoming cell handovers because no
channel is available in all the cells controlled by a BSC. In an external incoming cell handover procedure, the target BSC receives an HO REQ message from the MSC and decodes themessage. After successfully decoding the message, the BSC requests a channel from the target
cell. If the target cell returns a channel request failure message with the cause of channel
unavailable in it, the BSC measures the number of failed external incoming cell handovers
based on the channel type. The channel involved in the measurement may be an SDCCH or aTCH.
The crossing of frequency bands is of the following types:
900/850 to 900/850
1800/1900 to 1800/1900
900/850 to 1800/1900
1800/1900 to 900/850
Along with External Incoming Cell Handover Requests per BSC and External Incoming Cell
Handover Commands per BSC, the counter shows the performance of external incoming cellhandovers. Along with the counters related to the external outgoing cell handovers, the
counter shows the performance of cell handovers between BSCs.
Trigger Point
None.
Formula
Failed External Incoming Cell Handovers per BSC (Channel Unavailable)=∑<
=
N i
i 0
Failed
Incoming External Inter-Cell Handovers (No Channel Available) (SDCCH)]+ ∑
<
=
N i
i 0Failed
Incoming External Inter-Cell Handovers (No Channel Available) (TCH)
1.7.12 Failed External Incoming Cell Handovers per BSC(Requested Terrestrial Resource Unavailable)
Counter
ZH942E: Failed External Incoming Cell Handovers per BSC (Requested Terrestrial Resource
Unavailable)
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1-60 Huawei Technologies Proprietary Issue 03 (2007-05-09)
Meaning
This counter measures the number of failed external incoming cell handovers because the
requested terrestrial resources is unavailable in all the cells controlled by a BSC. The
measurement is performed in the target cell based on channel type and the crossing of
frequency bands.
The target BSC receives an HO REQ message from the MSC and decodes it. The target BSC
then requests a channel from the target cell. If the request is successful, the target BSC sends aCHAN ACTIV message to the target cell. After receiving a CHAN ACTIV ACK message, the
target BSC requests the terrestrial resources and terrestrial link resources about speechservices.
The CIC resources on the A interface is a key factor of the terrestrial resource request. The
MSC sends the target BSC an HO REQ message that carries the CIC. If the target BSCdetects that the CIC is unavailable, the BSC measures the counter Failed External Incoming
Cell Handovers per BSC (Requested Terrestrial Resource Unavailable).
The channel involved in the measurement may be an SDCCH or a TCH. The TCH may be atraffic channel or a signaling channel.
The crossing of frequency bands is of the following types:
900/850 to 900/850
1800/1900 to 1800/1900
900/850 to 1800/1900
1800/1900 to 900/850
The external incoming cell handover also occurs during the handover between differentsignaling points in a BSC.
Trigger Point
None.
Formula
Failed External Incoming Cell Handovers per BSC (Requested Terrestrial Resource
Unavailable)=∑<
=
N i
i 0
Failed Incoming External Inter-Cell Handovers (CIC Unavailable)
This counter is the sum of the predefined counter Failed Incoming External Inter-Cell
Handovers (CIC Unavailable) in all the cells controlled by a BSC.
1.7.13 Failed External Incoming Cell Handovers per BSC(Terrestrial Resource Already Allocated)
Counter
ZH942F: Failed External Incoming Cell Handovers per BSC (Terrestrial Resource Already
Allocated)
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Issue 03 (2007-05-09) Huawei Technologies Proprietary 1-61
Meaning
This counter measures the number of failed external incoming cell handovers because the
terrestrial resources is already allocated in all the cells controlled by a BSC. The measurement
is performed in the target cell based on channel type and the crossing of frequency bands.
The target BSC receives an HO REQ message from the MSC and decodes it. The target BSCthen requests a channel from the target cell. If the request is successful, the target BSC sends a
CHAN ACTIV message to the target cell. After receiving a CHAN ACTIV ACK message, thetarget BSC requests the terrestrial resources and terrestrial link resources about speech
services.
The CIC resources on the A interface is a key factor of the terrestrial resource request. TheMSC sends the target BSC an HO REQ message that carries the CIC. If the target BSC
detects that the CIC is already allocated, the BSC measures the counter Failed ExternalIncoming Cell Handovers per BSC (Terrestrial Resource Already Allocated).
The channel involved in the measurement may be an SDCCH or a TCH. The TCH may be a
traffic channel or a signaling channel.
The crossing of frequency bands is of the following types:
900/850 to 900/850
1800/1900 to 1800/1900
900/850 to 1800/1900
1800/1900 to 900/850
The external incoming cell handover also occurs during the handover between different
signaling points in a BSC.
Trigger Point None.
Formula
Failed External Incoming Cell Handovers per BSC (Terrestrial Resource Already Allocated)
=∑<
=
N i
i 0
Failed Incoming External Inter-Cell Handovers (CIC Allocated)
This counter is the sum of the predefined counter Failed Incoming External Inter-Cell
Handovers (CIC Allocated) in all the cells controlled by a BSC.
1.7.14 Failed External Incoming Cell Handovers per BSC(Equipment Failure)
Counter
ZH942B: Failed External Incoming Cell Handovers per BSC (Equipment Failure)
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Meaning
This counter measures the number of failed external incoming cell handovers caused by the
equipment failure in all the cells controlled by a BSC. The measurement is performed in the
target cell based on channel type and the crossing of frequency bands.
The target BSC receives an HO REQ message from the MSC and decodes it. The target BSCthen requests a channel from the target cell. If the request is successful, the target BSC sends a
CHAN ACTIV message to the target cell. After receiving a CHAN ACTIV ACK message, thetarget BSC requests the terrestrial resources and terrestrial link resources about speech
services. If the request fails, the BSC measures the counter Failed External Incoming CellHandovers per BSC (Equipment Failure).
The channel involved in the measurement may be an SDCCH or a TCH. The TCH may be a
traffic channel or a signaling channel.
The crossing of frequency bands is of the following types:
900/850 to 900/850 1800/1900 to 1800/1900
900/850 to 1800/1900
1800/1900 to 900/850
The external incoming cell handover also occurs during the handover between different
signaling points in a BSC.
Trigger Point
None.
Formula
Failed External Incoming Cell Handovers per BSC (Equipment Failure)=∑<
=
N i
i 0
Failed
Incoming External Inter-Cell Handovers (Terrestrial Resource Request Failed)
This counter is the sum of the predefined counter Failed Incoming External Inter-CellHandovers (Terrestrial Resource Request Failed) in all the cells controlled by a BSC.
1.7.15 Failed External Incoming Cell Handovers per BSC (TimerExpired)
Counter
ZCH9420C: Failed External Incoming Cell Handovers per BSC (Timer Expired)
Meaning
This counter measures the number of failed external incoming cell handovers because the
timer expires in all the cells controlled by a BSC.
In an external incoming cell handover procedure, the target BSC measures this counter in the
target cell based on the channel type and the TCH service type if the target BSC receives no
HO CMP message within scheduled time.
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The channel involved in the measurement may be an SDCCH or a TCH. The TCH may be atraffic channel or a signaling channel.
The crossing of frequency bands is of the following types:
900/850 to 900/850 1800/1900 to 1800/1900
900/850 to 1800/1900
1800/1900 to 900/850
Along with External Incoming Cell Handover Requests per BSC and External Incoming Cell
Handover Commands per BSC, the counter shows the performance of external incoming cell
handovers. Along with the counters related to the external outgoing cell handovers, thecounter shows the performance of cell handovers between BSCs.
Trigger Point
None.
Formula
Failed External Incoming Cell Handovers per BSC (Timer Expired)=∑<
=
N i
i 0
Failed Incoming
External Inter-Cell Handovers (Timer Expired) (SDCCH)+∑<
=
N i
i 0
Failed Incoming External
Inter-Cell Handovers (Timer Expired) (TCH) (Signaling Channel)+∑<
=
N i
i 0
Failed Incoming
External Inter-Cell Handovers (Timer Expired) (TCH) (Traffic Channel)
1.7.16 Failed External Incoming Cell Handovers per BSC (OtherCauses)
Counter
ZH942H: Failed External Incoming Cell Handovers per BSC (Other Causes)
Meaning
This counter measures the number of failed external incoming cell handovers caused by the
CLR CMD message received from the MSC in all the cells controlled by a BSC.
In an external incoming cell handover procedure, this counter is measured when the handover
fails because the target BSC receives a CLR CMD message from the MSC.
Along with External Incoming Cell Handover Requests per BSC and External Incoming CellHandover Commands per BSC, the counter shows the performance of external incoming cell
handovers. Along with the counters related to the external outgoing cell handovers, thecounter shows the performance of cell handovers between BSCs.
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Performance Counter Reference
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Trigger Point
None.
Formula
Failed External Incoming Cell Handovers per BSC (Other Causes)=∑<
=
N i
i 0
Failed Incoming
External Inter-Cell Handovers (Clear Commands Sent By MSC)
This counter is the sum of the predefined counter Failed Incoming External Inter-CellHandovers (Clear Commands Sent By MSC) in all the cells controlled by a BSC.
1.7.17 CHAN ACT NACK Messages Sent by BTS in ExternalIncoming Cell Handover Procedure per BSC
Counter
ZCR9350B: CHAN ACT NACK Messages Sent by BTS in External Incoming Cell Handover
Procedure per BSC
Meaning
This counter measures the number of CHAN ACT NACK messages sent by the BTS in the
external incoming cell handover procedure in all the cells controlled by a BSC.
In an external incoming cell handover procedure, the target BSC sends a CHAN ACTIVmessage to a BTS. If the BTS returns a CHAN ACTIV NACK message, the handover fails.
The BSC measures this counter in the target cell. The measurement is based on the channeltype. The channel involved in the measurement may be an SDCCH or a TCH. The TCH may be a traffic channel or a signaling channel.
Trigger Point
None.
Formula
CHAN ACT NACK Messages Sent by BTS in External Incoming Cell Handover Procedure
per BSC =∑<
=
N i
i 0
CHAN ACT NACK Messages Sent by BTS in External Incoming Cell
Handover Procedure per BSC(SDCCH) +∑<
=
N i
i 0
CHAN ACT NACK Messages Sent by BTS in
External Incoming Cell Handover Procedure per BSC(TCHF) +∑<
=
N i
i 0
CHAN ACT NACK
Messages Sent by BTS in External Incoming Cell Handover Procedure per BSC (TCHH)
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1.7.18 Channel Activation Timeouts in External Incoming CellHandover Procedure per BSC
CounterZCR9350C: Channel Activation Timeouts in External Incoming Cell Handover Procedure per
BSC
Meaning
This counter measures the number of channel activation timeouts in the external incoming cell
handover procedure in all the cells controlled by a BSC.
In an external incoming cell SDCCH handover procedure, the BSC sends a CHAN ACTIV
message to a BTS. If the BTS returns a CHAN ACTIV NACK message, the handover fails.The BSC measures this counter in the target cell. The measurement is based on the channel
type.
The channel involved in the measurement may be an SDCCH or a TCH. The TCH may be atraffic channel or a signaling channel.
Trigger Point
None.
Formula
CHAN ACT NACK Messages Sent by BTS in External Incoming Cell Handover Procedure
per BSC=∑<
=
N i
i 0
Channel Activation Timeouts in Incoming External Inter-Cell Handover
Procedure (SDCCH)+∑<
=
N i
i 0
Channel Activation Timeouts in Incoming External Inter-Cell
Handover Procedure (TCHF)+∑<
=
N i
i 0
Channel Activation Timeouts in Incoming External Inter-
Cell Handover Procedure (TCHH)
1.8 Handover Attempt Measurement per BSC1.8.1 Overview
Handover Attempt Measurement per BSC measures the number of handover attempts due to
all reasons per BSC.
Table 1-8 lists the counters of Handover Attempt Measurement per BSC.
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Table 1-8 Counters of Handover Attempt Measurement per BSC
Counter Section
ZCH970A: Attempted Handovers per BSC (Uplink Signal Quality) 1.8.2
ZCH970B: Attempted Handovers per BSC (Downlink Signal Quality) 1.8.3
ZCH970C: Attempted Handovers per BSC (Uplink Signal Strength) 1.8.4
ZCH970D: Attempted Handovers per BSC (Downlink Signal Strength) 1.8.5
ZCH970E: Attempted Handovers per BSC (Timing Advance) 1.8.6
ZCH970F: Attempted Handovers per BSC (Better Cell) 1.8.7
ZCH970G: Attempted Handovers per BSC (Load) 1.8.8
ZCH970H: Attempted Handovers per BSC (Rapid Level Drop) 1.8.9
ZCH970I: Attempted Handovers per BSC (MSC Intervention) 1.8.10
ZCH970J: Attempted Handovers per BSC (OM Intervention) 1.8.11
ZCH970L: Attempted Handovers per BSC (Other Causes) 1.8.12
ZCH971J: Attempted Handovers per BSC (Underlaid Subcell to Overlaid
Subcell)
1.8.13
ZCH971L: Attempted Handovers per BSC (Overlaid Subcell to UnderlaidSubcell)
1.8.14
ZCH9005: Attempted Handovers per BSC (Intra-Cell TCHF-to-TCHH
Handover)
1.8.15
ZCH9701: Attempted Handovers per BSC (Directed Retry) 1.8.16
1.8.2 Attempted Handovers per BSC (Uplink Signal Quality)
Counter
ZCH970A: Attempted Handovers per BSC (Uplink Signal Quality)
Meaning
This counter measures the number of attempted outgoing cell handovers per BSC (uplinksignal quality).
The BSC decides whether to initiate a handover based on the MR and the handover algorithm.
If the source cell and the object cell are controlled by one BSC, the BSC will initiate aninternal inter-cell handover.
If the source cell and the object cell are controlled by different BSCs, the BSC will initiate an
external inter-cell handover.
This counter is measured when the handover cause is uplink signal quality.
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Performance Counter Reference 1 BSC Measurement
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Trigger Point
None.
Formula
Attempted Handovers per BSC (Uplink Signal Quality)=∑<
=
N i
i 0
Outgoing Internal Inter-Cell
Handover Requests (Uplink Quality)]+ ∑<
=
N i
i 0
Outgoing External Inter-Cell Handover Requests
(Uplink Quality)
1.8.3 Attempted Handovers per BSC (Downlink Signal Quality)
CounterZCH970B: Attempted Handovers per BSC (Downlink Signal Quality)
Meaning
This counter measures the number of attempted outgoing cell handovers per BSC (downlink
signal quality).
The BSC decides whether to initiate a handover based on the MR and the handover algorithm.
If the source cell and the object cell are controlled by one BSC, the BSC will initiate an
internal inter-cell handover.
If the source cell and the object cell are controlled by different BSCs, the BSC will initiate anexternal inter-cell handover.
This counter is measured when the handover cause is downlink signal quality.
Trigger Point
None.
Formula
Attempted Handovers per BSC (Downlink Signal Quality)=∑
<
=
N i
i 0Outgoing Internal Inter-Cell
Handover Requests (Downlink Quality)]+∑<
=
N i
i 0
Outgoing External Inter-Cell Handover
Requests (Downlink Quality)
1.8.4 Attempted Handovers per BSC (Uplink Signal Strength)
Counter
ZCH970C: Attempted Handovers per BSC (Uplink Signal Strength)
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Meaning
This counter measures the number of attempted outgoing cell handovers per BSC (uplink
signal strength).
The BSC decides whether to initiate a handover based on the MR and the handover algorithm.
If the source cell and the object cell are controlled by one BSC, the BSC will initiate an
internal inter-cell handover.
If the source cell and the object cell are controlled by different BSCs, the BSC will initiate anexternal inter-cell handover.
This counter is measured when the handover cause is uplink signal quality.
Trigger Point
None.
Formula
Attempted Handovers per BSC (Uplink Signal Strength) =∑<
=
N i
i 0
Outgoing Internal Inter-Cell
Handover Requests (Uplink Strength)]+∑<
=
N i
i 0
Outgoing External Inter-Cell Handover Requests
(Uplink Strength)
1.8.5 Attempted Handovers per BSC (Downlink Signal Strength)
Counter
ZCH970D: Attempted Handovers per BSC (Downlink Signal Strength)
Meaning
This counter measures the number of attempted outgoing cell handovers per BSC (downlink
signal strength).
The BSC decides whether to initiate a handover based on the measurement report and the
handover algorithm.
If the source cell and the object cell are controlled by one BSC, the internal incoming cellhandover is initiated.
If the source cell and the object cell are controlled by different BSCs, the BSC will initiate anexternal inter-cell handover.
This counter is measured when the handover cause is downlink signal strength.
Trigger Point
None.
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Performance Counter Reference 1 BSC Measurement
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Formula
Attempted Handovers per BSC (Downlink Signal Strength) =∑<
=
N i
i 0
Outgoing Internal Inter-
Cell Handover Requests (Downlink Strength)]+∑<
=
N i
i 0
Outgoing External Inter-Cell Handover
Requests (Downlink Strength)
1.8.6 Attempted Handovers per BSC (Timing Advance)
Counter
ZCH970E: Attempted Handovers per BSC (Timing Advance)
MeaningThis counter measures the number of attempted outgoing cell handovers per BSC (timing
advance).
The BSC decides whether to initiate a handover based on the MR and the handover algorithm.
If the source cell and the object cell are controlled by one BSC, the BSC will initiate an
internal inter-cell handover.
If the source cell and the object cell are controlled by different BSCs, the BSC will initiate an
external inter-cell handover.
This counter is measured when the handover cause is timing advance.
Trigger Point
None.
Formula
Attempted Handovers per BSC (Timing Advance)=∑<
=
N i
i 0
Outgoing Internal Inter-Cell
Handover Requests (Timing Advance)]+∑<
=
N i
i 0
Outgoing External Inter-Cell Handover Requests
(Timing Advance)
1.8.7 Attempted Handovers per BSC (Better Cell)
Counter
ZCH970F: Attempted Handovers per BSC (Better Cell)
Meaning
This counter measures the number of attempted outgoing cell handovers per BSC (better cell).
The BSC decides whether to initiate a handover based on the MR and the handover algorithm.
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference
1-70 Huawei Technologies Proprietary Issue 03 (2007-05-09)
If the source cell and the object cell are controlled by one BSC, the BSC will initiate aninternal inter-cell handover.
If the source cell and the object cell are controlled by different BSCs, the BSC will initiate an
external inter-cell handover.
This counter is measured when the handover cause is better cell.
Trigger Point
None.
Formula
Attempted Handovers per BSC (Better Cell)=∑<
=
N i
i 0
Outgoing Internal Inter-Cell Handover
Requests (Better Cell)]+∑<
=
N i
i 0
Outgoing External Inter-Cell Handover Requests (Better Cell)
1.8.8 Attempted Handovers per BSC (Load)
Counter
ZCH970G: Attempted Handovers per BSC (Load)
Meaning
This counter measures the number of attempted outgoing cell handovers per BSC (load).
The BSC decides whether to initiate a handover based on the MR and the handover algorithm.
If the source cell and the object cell are controlled by one BSC, the BSC will initiate aninternal inter-cell handover.
If the source cell and the object cell are controlled by different BSCs, the BSC will initiate an
external inter-cell handover.
This counter is measured when the handover cause is load.
Trigger Point
None.
Formula
Attempted Handovers per BSC (Load)=∑<
=
N i
i 0
Outgoing Internal Inter-Cell Handover Requests
(Load)+ ∑<
=
N i
i 0
Outgoing External Inter-Cell Handover Requests (Load)
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference 1 BSC Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 1-71
1.8.9 Attempted Handovers per BSC (Rapid Level Drop)
Counter
ZCH970H: Attempted Handovers per BSC (Rapid Level Drop)
Meaning
This counter measures the number of attempted outgoing cell handovers per BSC (rapid level
drop).
The BSC decides whether to initiate a handover based on the MR and the handover algorithm.
If the source cell and the object cell are controlled by one BSC, the BSC will initiate aninternal inter-cell handover.
If the source cell and the object cell are controlled by different BSCs, the BSC will initiate an
external inter-cell handover.
This counter is measured when the handover cause is rapid level drop.
Trigger Point
None.
Formula
Attempted Handovers per BSC (Rapid Level Drop)=∑<
=
N i
i 0
Outgoing Internal Inter-Cell
Handover Requests (Rapid Level Drop)]+∑<
=
N i
i 0
Outgoing External Inter-Cell Handover
Requests (Rapid Level Drop)
1.8.10 Attempted Handovers per BSC (MSC Intervention)
Counter
ZCH970I: Attempted Handovers per BSC (MSC Intervention)
MeaningThis counter measures the number of attempted outgoing cell handovers per BSC (MSC
intervention).
The BSC decides whether to initiate a handover based on the MR and the handover algorithm.
If the source cell and the object cell are controlled by one BSC, the BSC will initiate aninternal inter-cell handover.
If the source cell and the object cell are controlled by different BSCs, the BSC will initiate anexternal inter-cell handover.
This counter is measured when the handover cause is MSC intervention.
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1 BSC Measurement
HUAWEI BSC6000 Base Station Controller
Performance Counter Reference
1-72 Huawei Technologies Proprietary Issue 03 (2007-05-09)
Trigger Point
None.
Formula
Attempted Handovers per BSC (MSC Intervention)=∑<
=
N i
i 0
Outgoing Internal Inter-Cell
Handover Requests (MSC Intervention)]+∑<
=
N i
i 0
Outgoing External Inter-Cell Handover
Requests (MSC Intervention)
1.8.11 Attempted Handovers per BSC (OM Intervention)
CounterZCH970J: Attempted Handovers per BSC (OM Intervention)
Meaning
This counter measures the number of attempted outgoing cell handovers per BSC (OM
intervention).
The BSC decides whether to initiate a handover based on the MR and the handover algorithm.
If the source cell and the object cell are controlled by one BSC, the BSC will initiate an
internal inter-cell handover.
If the source cell and the object cell are controlled by different BSCs, the BSC will initiate anexternal inter-cell handover.
This counter is measured when the handover cause is OM intervention.
Trigger Point
None.
Formula
Attempted Handovers per BSC (OM Intervention)=∑
<
=
N i
i 0Outgoing Internal Inter-Cell
Handover Requests (OM Intervention)]+∑<
=
N i
i 0
Outgoing External Inter-Cell Handover
Requests (OM Intervention)
1.8.12 Attempted Handovers per BSC (Other Causes)
Counter
ZCH970L: Attempted Handovers per BSC (Other Causes)
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference 1 BSC Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 1-73
Meaning
This counter measures the number of attempted outgoing cell handovers per BSC (other
causes).
The BSC decides whether to initiate a handover based on the MR and the handover algorithm.
If the source cell and the object cell are controlled by one BSC, the BSC will initiate an
internal inter-cell handover.
If the source cell and the object cell are controlled by different BSCs, the BSC will initiate anexternal inter-cell handover.
This counter is measured when the handover causes are other causes.
Trigger Point
None.
Formula
Attempted Handovers per BSC (Other Causes)=∑<
=
N i
i 0
Outgoing Internal Inter-Cell Handover
Requests (Other Causes)]+∑<
=
N i
i 0
Outgoing External Inter-Cell Handover Requests (Other
Causes)
1.8.13 Attempted Handovers per BSC (Underlaid Subcell to
Overlaid Subcell)
Counter
ZCH971J: Attempted Handovers per BSC (Underlaid Subcell to Overlaid Subcell)
Meaning
This counter measures the number of attempted handovers per BSC (underlaid subcell to
overlaid subcell).
This counter indicates the frequency of attempted handovers per BSC (underlaid subcell to
overlaid subcell). You can know the handover performance by referring to Internal Intra-CellHandover Commands per BSC and Successful Internal Intra-Cell Handovers per BSC.
The BSC selects preferentially the idle neighbor cells as the object cells. For a neighbor cell that is indifferent a GSM Main Processing Subrack (GMPS) from but the same BSC with the source cell, if its
channel status is not known, this neighbor cell is considered as idle. If all the neighbor cells of the sourcecell are congested, a default neighbor cell (the first cell in the candidate cell list) is selected even if it iscongested. This counter is measured when the selected neighbor cell is the source cell. It is not measured
when the object overlaid or underlaid subcell is congested.
Trigger Point
None.
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1 BSC Measurement
HUAWEI BSC6000 Base Station Controller
Performance Counter Reference
1-74 Huawei Technologies Proprietary Issue 03 (2007-05-09)
Formula
Attempted Handovers per BSC (Underlaid Subcell to Overlaid Subcell)=∑<
=
N i
i 0
Internal Intra-
Cell Handover Requests (Underlay to Overlay)
This counter is the sum of the predefined counter Internal Intra-Cell Handover Requests
(Underlay to Overlay) in all the cells controlled by a BSC.
1.8.14 Attempted Handovers per BSC (Overlaid Subcell toUnderlaid Subcell)
Counter
ZCH971L: Attempted Handovers per BSC (Overlaid Subcell to Underlaid Subcell)
Meaning
This counter measures the number of attempted handovers per BSC (overlaid subcell to
underlaid subcell).
The BSC selects preferentially the idle neighbor cells as the object cells. For a neighbor cell that is indifferent a GSM Main Processing Subrack (GMPS) from but the same BSC with the source cell, if itschannel status is not known, this neighbor cell is considered as idle. If all the neighbor cells of the source
cell are congested, a default neighbor cell (the first cell in the candidate cell list) is selected even if it iscongested. This counter is measured when the selected neighbor cell is the source cell. It is not measured
when the object overlaid or underlaid subcell is congested.
Trigger Point
None.
Formula
Attempted Handovers per BSC (Overlaid Subcell to Underlaid Subcell)=∑<
=
N i
i 0
Internal Intra-
Cell Handover Requests (Overlay to Underlay)
This counter is the sum of the predefined counter Internal Intra-Cell Handover Requests
(Overlay to Underlay) in all the cells controlled by a BSC.
1.8.15 Attempted Handovers per BSC (Intra-Cell TCHF-to-TCHHHandover)
Counter
ZCH9005: Attempted Handovers per BSC (Intra-Cell TCHF-to-TCHH Handover)
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference 1 BSC Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 1-75
Meaning
This counter measures the number of attempted handovers per BSC (intra-cell TCHF-to-
TCHH handover).
This counter indicates the frequency of attempted handovers per BSC (intra-cell TCHF-to-TCHH handover). You can know the handover performance by referring to Internal Intra-CellHandover Commands per BSC and Successful Internal Intra-Cell Handovers per BSC.
Trigger Point
None.
Formula
Attempted Handovers per BSC (Intra-Cell TCHF-to-TCHH Handover)=∑<
=
N i
i 0
Internal Intra-
Cell Handover Requests (AMR) (TCHF-TCHH)+ ∑<
=
N i
i 0
Internal Intra-Cell Handover Requests
(AMR) (TCHH-TCHF)
1.8.16 Attempted Handovers per BSC (Directed Retry)
Counter
ZCH9701: Attempted Handovers per BSC (Directed Retry)
Meaning
This counter measures the number of attempted outgoing cell handovers per BSC (directed
retry).
The handover can be between M900/850 and M900/850, M1800/1900 and M1800/1900,M900/850 and M1800/1900, M1800/1900 and M900/850.
Trigger Point
None.
Formula
Attempted Handovers per BSC (Directed Retry)=∑<
=
N i
i 0
Outgoing Internal Inter-Cell Handover
Requests (Directed Retry) (900/850-900/850)+∑<
=
N i
i 0
Outgoing Internal Inter-Cell Handover
Requests (Directed Retry) (1800/1900-1800/1900)+∑<
=
N i
i 0
Outgoing Internal Inter-Cell
Handover Requests (Directed Retry) (900/850-1800/1900)+∑<
=
N i
i 0
Outgoing Internal Inter-Cell
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference
1-76 Huawei Technologies Proprietary Issue 03 (2007-05-09)
Handover Requests (Directed Retry) (1800/1900-900/850)+∑<
=
N i
i 0
Outgoing External Inter-Cell
Handover Requests (Directed Retry) (900/850-900/850)+∑<
=
N i
i 0
Outgoing External Inter-Cell
Handover Requests (Directed Retry) (1800/1900-1800/1900)+∑<
=
N i
i 0
Outgoing External Inter-
Cell Handover Requests (Directed Retry) (900/850-1800/1900)+∑<
=
N i
i 0
Outgoing External Inter-
Cell Handover Requests (Directed Retry) (1800/1900-900/850)
1.9 Handover Success Measurement per BSC
1.9.1 Overview
Handover Success Measurement per BSC refers to the measurement of the number of
handovers due to all reasons per BSC.
Table 1-9 lists the counters of Handover Success Measurement per BSC.
Table 1-9 Counters of Handover Success Measurement per BSC
Counter Section
ZCH973A: Successful Handovers per BSC (Uplink Signal Quality) 1.9.2
ZCH973B: Successful Handovers per BSC (Downlink Signal Quality) 1.9.3
ZCH973C: Successful Handovers per BSC (Uplink Signal Strength) 1.9.4
ZCH973D: Successful Handovers per BSC (Downlink Signal Strength) 1.9.5
ZCH973E: Successful Handovers per BSC (Timing Advance) 1.9.6
ZCH973F: Successful Handovers per BSC (Better Cell) 1.9.7
ZCH973G: Successful Handovers per BSC (Load) 1.9.8
ZCH973H: Successful Handovers per BSC (Rapid Level Drop) 1.9.9
ZCH973I: Successful Handovers per BSC (MSC Intervention) 1.9.10
ZCH973J: Successful Handovers per BSC (OM Intervention) 1.9.11
ZCH973L: Successful Handovers per BSC (Other Causes) 1.9.12
ZH9032: Successful Handovers per BSC (Underlaid Subcell to OverlaidSubcell)
1.9.13
ZH9031: Successful Handovers per BSC (Overlaid Subcell to UnderlaidSubcell)
1.9.14
ZH9035: Successful Handovers per BSC (Intra-Cell TCHF-to-TCHH
Handover)
1.9.15
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference 1 BSC Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 1-77
Counter Section
ZH9731: Successful Handovers per BSC (Directed Retry) 1.9.16
1.9.2 Successful Handovers per BSC (Uplink Signal Quality)
Counter
ZCH973A: Successful Handovers per BSC (Uplink Signal Quality)
Meaning
This counter measures the number of successful handovers per BSC (uplink signal quality).
Trigger Point
None.
Formula
Successful Handovers per BSC (Uplink Signal Quality)=(∑<
=
N i
i 0
Outgoing Internal Inter-Cell
Handover Requests (Uplink Quality)+∑<
=
N i
i 0
Outgoing External Inter-Cell Handover Requests
(Uplink Quality))-(∑<
=
N i
i 0
Failed Outgoing Internal Inter-Cell Handovers (Uplink Quality)+∑<
=
N i
i 0
Failed Outgoing External Inter-Cell Handovers (Uplink Quality))
1.9.3 Successful Handovers per BSC (Downlink Signal Quality)
Counter
ZCH973B: Successful Handovers per BSC (Downlink Signal Quality)
Meaning
This counter measures the number of successful handovers per BSC (downlink signal quality).
Trigger Point
None.
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference
1-78 Huawei Technologies Proprietary Issue 03 (2007-05-09)
Formula
Successful Handovers per BSC (Downlink Signal Quality)=(∑<
=
N i
i 0
Outgoing Internal Inter-Cell
Handover Requests (Downlink Quality)+∑<
=
N i
i 0
Outgoing External Inter-Cell Handover
Requests (Downlink Quality))-(∑<
=
N i
i 0
Failed Outgoing Internal Inter-Cell Handovers
(Downlink Quality)+∑<
=
N i
i 0
Failed Outgoing External Inter-Cell Handovers (Downlink Quality))
1.9.4 Successful Handovers per BSC (Uplink Signal Strength)
CounterZCH973C: Successful Handovers per BSC (Uplink Signal Strength)
Meaning
This counter measures the number of successful outgoing cell handovers per BSC (uplink
signal strength).
Trigger Point
None.
Formula
Successful Handovers per BSC (Uplink Signal Strength)=(∑<
=
N i
i 0
Outgoing Internal Inter-Cell
Handover Requests (Uplink Strength)+∑<
=
N i
i 0
Outgoing External Inter-Cell Handover Requests
(Uplink Strength))-(∑<
=
N i
i 0
Failed Outgoing Internal Inter-Cell Handovers (Uplink Strength)
+∑
<
=
N i
i 0Failed Outgoing External Inter-Cell Handovers (Uplink Strength))
1.9.5 Successful Handovers per BSC (Downlink Signal Strength)
Counter
ZCH973D: Successful Handovers per BSC (Downlink Signal Strength)
Meaning
This counter measures the number of successful outgoing cell handovers per BSC (downlink
signal strength).
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference 1 BSC Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 1-79
Trigger Point
None.
Formula
Successful Handovers per BSC (Downlink Signal Strength)=(∑<
=
N i
i 0
Outgoing Internal Inter-
Cell Handover Requests (Downlink Strength)+∑<
=
N i
i 0
Outgoing External Inter-Cell Handover
Requests (Downlink Strength)-(∑<
=
N i
i 0
Failed Outgoing Internal Inter-Cell Handovers
(Downlink Strength)+∑<
=
N i
i 0
Failed Outgoing External Inter-Cell Handovers (Downlink
Strength))
1.9.6 Successful Handovers per BSC (Timing Advance)
Counter
ZCH973E: Successful Handovers per BSC (Timing Advance)
Meaning
This counter measures the number of successful outgoing cell handovers per BSC (timing
advance).
Trigger Point
None.
Formula
Successful Handovers per BSC (Timing Advance)=(∑<
=
N i
i 0
Outgoing Internal Inter-Cell
Handover Requests (Timing Advance)+∑
<
=
N i
i 0 Outgoing External Inter-Cell Handover Requests
(Timing Advance)-(∑<
=
N i
i 0
Failed Outgoing Internal Inter-Cell Handovers (Timing
Advance)+∑<
=
N i
i 0
Failed Outgoing External Inter-Cell Handovers (Timing Advance))
1.9.7 Successful Handovers per BSC (Better Cell)
Counter
ZCH973F: Successful Handovers per BSC (Better Cell)
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1 BSC Measurement
HUAWEI BSC6000 Base Station Controller
Performance Counter Reference
1-80 Huawei Technologies Proprietary Issue 03 (2007-05-09)
Meaning
This counter measures the number of successful outgoing cell handovers per BSC (better cell).
Better cell refers to a cell with less path loss and higher priority.
Trigger Point
None.
Formula
Successful Handovers per BSC (Better Cell)=(∑<
=
N i
i 0
Outgoing Internal Inter-Cell Handover
Requests (Better Cell)+∑<
=
N i
i 0
Outgoing External Inter-Cell Handover Requests (Better Cell))-
(∑<
=
N i
i 0
Failed Outgoing Internal Inter-Cell Handovers (Better Cell)+∑<
=
N i
i 0
Failed Outgoing
External Inter-Cell Handovers (Better Cell))
1.9.8 Successful Handovers per BSC (Load)
Counter
ZCH973G: Successful Handovers per BSC (Load)
MeaningThis counter measures the number of successful handovers per BSC (load).
Trigger Point
None.
Formula
Successful Handovers per BSC (Load)=(∑<
=
N i
i 0
Outgoing Internal Inter-Cell Handover Requests
(Load)+∑<
=
N i
i 0
Outgoing External Inter-Cell Handover Requests (Load)-(∑<
=
N i
i 0
Failed Outgoing
Internal Inter-Cell Handovers (Load)+∑<
=
N i
i 0
Failed Outgoing External Inter-Cell Handovers
(Load))
1.9.9 Successful Handovers per BSC (Rapid Level Drop)
Counter
ZCH973H: Successful Handovers per BSC (Rapid Level Drop)
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference 1 BSC Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 1-81
Meaning
This counter measures the number of successful handovers per BSC (rapid level drop).
Trigger Point None.
Formula
Successful Handovers per BSC (Rapid Level Drop)=(∑<
=
N i
i 0
Outgoing Internal Inter-Cell
Handover Requests (Rapid Level Drop)+∑<
=
N i
i 0
Outgoing External Inter-Cell Handover
Requests (Rapid Level Drop)-(∑
<
=
N i
i 0Failed Outgoing Internal Inter-Cell Handovers (Rapid
Level Drop)+∑<
=
N i
i 0
Failed Outgoing External Inter-Cell Handovers (Rapid Level Drop))
1.9.10 Successful Handovers per BSC (MSC Intervention)
Counter
ZCH973I: Successful Handovers per BSC (MSC Intervention)
Meaning
This counter measures the number of successful outgoing cell handovers per BSC (MSC
intervention). The MSC sends the HANDOVER CANDIDATE ENQUIRY message to theBSC, and then handovers of multiple MSs in one cell are initiated.
Trigger Point
None.
Formula
Successful Handovers per BSC (MSC Intervention)=(∑<
=
N i
i 0
Outgoing Internal Inter-Cell
Handover Requests (MSC Intervention)+∑<
=
N i
i 0
Outgoing External Inter-Cell Handover
Requests (MSC Intervention)-(∑<
=
N i
i 0
Failed Outgoing Internal Inter-Cell Handovers (MSC
Intervention)+∑<
=
N i
i 0
Failed Outgoing External Inter-Cell Handovers (MSC Intervention))
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1 BSC Measurement
HUAWEI BSC6000 Base Station Controller
Performance Counter Reference
1-82 Huawei Technologies Proprietary Issue 03 (2007-05-09)
1.9.11 Successful Handovers per BSC (OM Intervention)
Counter
ZCH973J: Successful Handovers per BSC (OM Intervention)
Meaning
This counter measures the number of successful handovers per BSC (OM intervention).
Trigger Point
None.
Formula
Successful Handovers per BSC (OM Intervention)=(∑<
=
N i
i 0
Outgoing Internal Inter-Cell
Handover Requests (OM Intervention)+∑<
=
N i
i 0
Outgoing External Inter-Cell Handover Requests
(OM Intervention))-(∑<
=
N i
i 0
Failed Outgoing Internal Inter-Cell Handovers (OM
Intervention)+∑<
=
N i
i 0
Failed Outgoing External Inter-Cell Handovers (OM Intervention))
1.9.12 Successful Handovers per BSC (Other Causes)
Counter
ZCH973L: Successful Handovers per BSC (Other Causes)
Meaning
This counter measures the number of successful handovers per BSC (other causes).
Trigger Point
None.
Formula
Successful Handovers per BSC (Other Causes)=(∑<
=
N i
i 0
Outgoing Internal Inter-Cell Handover
Requests (Other Causes)+∑<
=
N i
i 0
Outgoing External Inter-Cell Handover Requests (Other
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference 1 BSC Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 1-83
Causes)-(∑<
=
N i
i 0
Failed Outgoing Internal Inter-Cell Handovers (Other Causes)+∑<
=
N i
i 0
Failed
Outgoing External Inter-Cell Handovers (Other Causes))
1.9.13 Successful Handovers per BSC (Underlaid Subcell toOverlaid Subcell)
Counter
ZH9032: Successful Handovers per BSC (Underlaid Subcell to Overlaid Subcell)
Meaning
This counter measures the number of successful handovers per BSC (underlaid subcell to
overlaid subcell).
Trigger Point
None.
Formula
Successful Handovers per BSC (Underlaid Subcell to Overlaid Subcell)=∑<
=
N i
i 0
Internal Intra-
Cell Handover Requests (Underlay to Overlay)- (∑<
=
N i
i 0
Failed Internal Intra-Cell Handovers
(Channel Unavailable) (Underlay to Overlay)+∑<
=
N i
i 0
Failed Internal Intra-Cell Handovers
(Channel Unavailable) (Underlay to Overlay)
1.9.14 Successful Handovers per BSC (Overlaid Subcell toUnderlaid Subcell)
Counter
ZH9031: Successful Handovers per BSC (Overlaid Subcell to Underlaid Subcell)
Meaning
This counter measures the number of successful handovers per BSC (overlaid subcell to
underlaid subcell).
Trigger Point
None.
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1 BSC Measurement
HUAWEI BSC6000 Base Station Controller
Performance Counter Reference
1-84 Huawei Technologies Proprietary Issue 03 (2007-05-09)
Formula
Successful Handovers per BSC (Overlaid Subcell to Underlaid Subcell)=∑<
=
N i
i 0
Internal Intra-
Cell Handover Requests (Overlay to Underlay)+ (∑<
=
N i
i 0
Failed Internal Intra-Cell Handovers
(Channel Unavailable) (Overlay to Underlay)+∑<
=
N i
i 0
Failed Internal Intra-Cell Handovers
(Channel Unavailable) (Overlay to Underlay)
1.9.15 Successful Handovers per BSC (Intra-Cell TCHF-to-TCHHHandover)
CounterZH9035: Successful Handovers per BSC (Intra-Cell TCHF-to-TCHH Handover)
Meaning
This counter measures the number of successful handovers per BSC (intra-cell TCHF to
TCHH handover).
Trigger Point
None.
Formula
Successful Handovers per BSC (Intra-Cell TCHF-to-TCHH Handover)= (∑<
=
N i
i 0
Internal Intra-
Cell Handover Requests (AMR) (TCHF-TCHH)+∑<
=
N i
i 0
Internal Intra-Cell Handover Requests
(AMR) (TCHH-TCHF) - (∑<
=
N i
i 0
Failed Internal Intra-Cell Handovers (AMR) (TCHF-
TCHH)+∑
<
=
N i
i 0Failed Internal Intra-Cell Handovers (AMR) (TCHH-TCHF)
1.9.16 Successful Handovers per BSC (Directed Retry)
Counter
ZH9731: Successful Handovers per BSC (Directed Retry)
Meaning
This counter measures the number of successful outgoing cell handovers per BSC (direct
retry).
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference 1 BSC Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 1-85
The channels can be SDCCHs, TCHFs, and TCHHs.
The handover can be between M900/850 and M900/850, M1800/1900 and M1800/1900,
M900/850 and M1800/1900, M1800/1900 and M900/850.
Trigger Point
None.
Formula
Successful Handovers per BSC (Directed Retry)= (∑<
=
N i
i 0
Outgoing Internal Inter-Cell
Handover Requests (Directed Retry) (900/850-900/850)+∑<
=
N i
i 0
Outgoing Internal Inter-Cell
Handover Requests (Directed Retry) (1800/1900-1800/1900)+∑<
=
N i
i 0
Outgoing Internal Inter-
Cell Handover Requests (Directed Retry) (900/850-1800/1900)+∑<
=
N i
i 0
Outgoing Internal Inter-
Cell Handover Requests (Directed Retry) (1800/1900-900/850)+∑<
=
N i
i 0
Outgoing External Inter-
Cell Handover Requests (Directed Retry) (900/850-900/850)+∑<
=
N i
i 0
Outgoing External Inter-
Cell Handover Requests (Directed Retry) (1800/1900-1800/1900)+∑<
=
N i
i 0
Outgoing External
Inter-Cell Handover Requests (Directed Retry) (900/850-1800/1900)+∑<
=
N i
i 0
Outgoing External
Inter-Cell Handover Requests (Directed Retry) (1800/1900-900/850)) - (∑<
=
N i
i 0
Failed Outgoing
Internal Inter-Cell Handovers (Directed Retry) (900/850-900/850)+∑<
=
N i
i 0
Failed Outgoing
Internal Inter-Cell Handovers (Directed Retry) (1800/1900-1800/1900)+∑<
=
N i
i 0
Failed Outgoing
Internal Inter-Cell Handovers (Directed Retry) (900/850-1800/1900)+∑<
=
N i
i 0
Failed Outgoing
Internal Inter-Cell Handovers (Directed Retry) (1800/1900-900/850)+∑<
=
N i
i 0
Failed Outgoing
External Inter-Cell Handovers (Directed Retry) (900/850-900/850)+∑<
=
N i
i 0
Failed Outgoing
External Inter-Cell Handovers (Directed Retry) (1800/1900-1800/1900)+∑<
=
N i
i 0
Failed Outgoing
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1 BSC Measurement
HUAWEI BSC6000 Base Station Controller
Performance Counter Reference
1-86 Huawei Technologies Proprietary Issue 03 (2007-05-09)
External Inter-Cell Handovers (Directed Retry) (900/850-1800/1900)+∑<
=
N i
i 0
Failed Outgoing
External Inter-Cell Handovers (Directed Retry) (1800/1900-900/850))
1.10 Inter-Frequency-Band Measurement per BSC
1.10.1 Overview
Inter-Frequency-Band Measurement per BSC refers to the measurement of the number ofinternal and external BSC handover attempts and successes.
Table 1-10 lists the counters of Inter-Frequency-Band Measurement per BSC.
Table 1-10 Counters of Inter-Frequency-Band Measurement per BSC
Counter Section
ZCH900Y: Attempted Internal Inter-Cell Handovers per BSC (900/850 to1800/1900)
1.10.2
ZCH900Z: Attempted Internal Inter-Cell Handovers per BSC (1800/1900 to900/850)
1.10.3
ZCH903Y: Successful Internal Inter-Cell Handovers per BSC (900/850 to1800/1900)
1.10.4
ZCH903Z: Successful Internal Inter-Cell Handovers per BSC (1800/1900 to
900/850)
1.10.5
ZCH940Y: Attempted Incoming BSC Handovers per BSC (900/850 to1800/1900)
1.10.6
ZCH940Z: Attempted Incoming BSC Handovers per BSC (1800/1900 to900/850)
1.10.7
ZCH943Y: Successful Incoming BSC Handovers per BSC (900/850 to1800/1900)
1.10.8
ZCH943Z: Successful Incoming BSC Handovers per BSC (1800/1900 to
900/850)
1.10.9
ZCH930Y: Attempted Outgoing BSC Handovers per BSC (900/850 to1800/1900)
1.10.10
ZCH930Z: Attempted Outgoing BSC Handovers per BSC (1800/1900 to900/850)
1.10.11
ZCH933Y: Successful Outgoing BSC Handovers per BSC (900/850 to
1800/1900)
1.10.12
ZCH933Z: Successful Outgoing BSC Handovers per BSC (1800/1900 to
900/850)
1.10.13
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference 1 BSC Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 1-87
1.10.2 Attempted Internal Inter-Cell Handovers per BSC (900/850to 1800/1900)
CounterZCH900Y: Attempted Internal Inter-Cell Handovers per BSC (900/850 to 1800/1900)
Meaning
This counter measures the number of attempted internal inter-cell handovers per BSC
(900/850 to 1800/1900).The BSC decides whether to initiate a handover based on themeasurement report and the handover algorithm. If the source cell and the object cell arecontrolled by one BSC, the internal inter-cell handover is initiated.
The channels can be SDCCHs and TCHs.
This counter indicates the frequency of attempted internal inter-cell handovers per BSC. Youcan know the handover performance by referring to Successful Internal Inter-Cell Handovers
per BSC (900/850 to 1800/1900).
The handover is between only M900/850 and M1800/1900.
Trigger Point
None.
Formula
Attempted Internal Inter-Cell Handovers per BSC (900/850 to 1800/1900)=∑<
=
N i
i 0
Incoming
Internal Inter-Cell Handover Requests (SDCCH) (900/850-1800/1900)+∑<
=
N i
i 0
Incoming
Internal Inter-Cell Handover Requests (TCH) (900/850-1800/1900)
1.10.3 Attempted Internal Inter-Cell Handovers per BSC(1800/1900 to 900/850)
Counter
ZCH900Z: Attempted Internal Inter-Cell Handovers per BSC (1800/1900 to 900/850)
Meaning
This counter measures the number of attempted internal inter-cell handovers per BSC
(1800/1900 to 900/850).The BSC decides whether to initiate a handover based on themeasurement report and the handover algorithm. If the source cell and the object cell are
controlled by one BSC, the internal inter-cell handover is initiated.
The channels can be SDCCHs and TCHs.
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1 BSC Measurement
HUAWEI BSC6000 Base Station Controller
Performance Counter Reference
1-88 Huawei Technologies Proprietary Issue 03 (2007-05-09)
This counter indicates the frequency of attempted internal inter-cell handovers per BSC. Youcan know the handover performance by referring to Successful Internal Inter-Cell Handovers per BSC (1800/1900 to 900/850).
The handover is between only M1800/1900 and M900/850.
Trigger Point
None.
Formula
Attempted Internal Inter-Cell Handovers per BSC (1800/1900 to 900/850) =∑<
=
N i
i 0
Incoming
Internal Inter-Cell Handover Requests (SDCCH) (1800/1900-900/850)+∑
<
=
N i
i 0Incoming
Internal Inter-Cell Handover Requests (TCH) (1800/1900-900/850)
1.10.4 Successful Internal Inter-Cell Handovers per BSC (900/850to 1800/1900)
Counter
ZCH903Y: Successful Internal Inter-Cell Handovers per BSC (900/850 to 1800/1900)
Meaning
This counter measures the number of successful internal inter-cell handovers per BSC
(900850 to 1800/1900).
The channels can be SDCCHs and TCHs.
You can know the handover performance by referring to Attempted Internal Inter-Cell
Handovers per BSC (900/850 to 1800/1900).
The handover is between only M900/850 and M1800/1900.
Trigger Point
None.
Formula
Successful Internal Inter-Cell Handovers per BSC (900/850 to 1800/1900)= (∑<
=
N i
i 0
Incoming
Internal Inter-Cell Handover Requests (SDCCH) (900/850-1800/1900)+∑<
=
N i
i 0
Incoming
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference 1 BSC Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 1-89
Internal Inter-Cell Handover Requests (TCH) (900/850-1800/1900)) - (∑<
=
N i
i 0
Failed Incoming
Internal Inter-Cell Handovers (SDCCH) (900/850-1800/1900)+∑<
=
N i
i 0
Failed Incoming Internal
Inter-Cell Handovers (TCH) (900/850-1800/1900))
1.10.5 Successful Internal Inter-Cell Handovers per BSC(1800/1900 to 900/850)
Counter
ZCH903Z: Successful Internal Inter-Cell Handovers per BSC (1800/1900 to 900/850)
Meaning
This counter measures the number of successful internal inter-cell handovers per BSC(1800/1900 to 900/850). This counter is measured based on the channel type. The handover
initiation causes are direct retry and indirect retry.
The channels can be SDCCHs and TCHs.
You can know the handover performance by referring to Attempted Internal Inter-Cell
Handovers per BSC (1800/1900 to 900/850).
The handover is between only M1800/1900 and M900/850.
Trigger Point
None.
Formula
Successful Internal Inter-Cell Handovers per BSC (1800/1900 to 900/850) = (∑<
=
N i
i 0
Incoming
Internal Inter-Cell Handover Requests (SDCCH) (1800/1900-900/850)+∑<
=
N i
i 0
Incoming
Internal Inter-Cell Handover Requests (TCH) (1800/1900-900/850)) - (∑<
=
N i
i 0
Failed Incoming
Internal Inter-Cell Handovers (SDCCH) (1800/1900-900/850)+∑<
=
N i
i 0
Failed Incoming Internal
Inter-Cell Handovers (TCH) (1800/1900-900/850))
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1 BSC Measurement
HUAWEI BSC6000 Base Station Controller
Performance Counter Reference
1-90 Huawei Technologies Proprietary Issue 03 (2007-05-09)
1.10.6 Attempted Incoming BSC Handovers per BSC (900/850 to1800/1900)
CounterZCH940Y: Attempted Incoming BSC Handovers per BSC (900/850 to 1800/1900)
Meaning
This counter measures the number of attempted incoming BSC handovers per BSC (900/850
to 1800/1900).
If the source cell and the object cell are controlled by different BSCs, the external BSChandover is initiated. This counter is measured based on the channel type and seized TCH
channel type.
The channels can be SDCCHs and TCHs.
This counter indicates the frequency of attempted incoming BSC handovers per BSC. You canknow the handover performance by referring to Successful Incoming BSC Handovers per
BSC (900/850 to 1800/1900).
The handover is between only M900/850 and M1800/1900.
Trigger Point
None.
Formula
Attempted Incoming BSC Handovers per BSC (900/850 to 1800/1900)=∑<
=
N i
i 0
Incoming
External Inter-Cell Handover Requests (SDCCH) (900/850-1800/1900)+∑<
=
N i
i 0
Incoming
External Inter-Cell Handover Requests (TCH) (900/850-1800/1900)
1.10.7 Attempted Incoming BSC Handovers per BSC (1800/1900 to
900/850)
Counter
ZCH940Z: Attempted Incoming BSC Handovers per BSC (1800/1900 to 900/850)
Meaning
This counter measures the number of attempted incoming BSC handovers per BSC
(1800/1900 to 900/850).
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference 1 BSC Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 1-91
If the source cell and the object cell are controlled by different BSCs, the external BSChandover is initiated. This counter is measured based on the channel type and seized TCHchannel type.
The channels can be SDCCHs and TCHs.
This counter indicates the frequency of attempted incoming BSC handovers per BSC. You can
know the handover performance by referring to Successful Incoming BSC Handovers per
BSC (1800/1900 to 900/850).
The handover is between only M1800/1900 and M900/850.
Trigger Point
None.
Formula
Attempted Incoming BSC Handovers per BSC (900/850 to 1800/1900)=∑<
=
N i
i 0
Incoming
External Inter-Cell Handover Requests (SDCCH) (900/850-1800/1900)+∑<
=
N i
i 0
Incoming
External Inter-Cell Handover Requests (TCH) (900/850-1800/1900)
1.10.8 Successful Incoming BSC Handovers per BSC (900/850 to1800/1900)
Counter
ZCH943Y: Successful Incoming BSC Handovers per BSC (900/850 to 1800/1900)
Meaning
This counter measures the number of successful incoming BSC handovers per BSC (900/850to 1800/1900).
The channels can be SDCCHs and TCHs.
You can know the handover performance by referring to Attempted Incoming BSC Handovers per BSC (900/850 to 1800/1900).
The handover is between only M900/850 and M1800/1900.
Trigger Point
None.
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1 BSC Measurement
HUAWEI BSC6000 Base Station Controller
Performance Counter Reference
1-92 Huawei Technologies Proprietary Issue 03 (2007-05-09)
Formula
Successful Incoming BSC Handovers per BSC (900/850 to 1800/1900)= (∑<
=
N i
i 0
Incoming
External Inter-Cell Handover Requests (SDCCH) (900/850-1800/1900)+∑<
=
N i
i 0
Incoming
External Inter-Cell Handover Requests (TCH) (900/850-1800/1900))- (∑<
=
N i
i 0
Failed Incoming
External Inter-Cell Handovers (SDCCH) (900/850-1800/1900)+∑<
=
N i
i 0
Failed Incoming
External Inter-Cell Handovers (TCH) (900/850-1800/1900))
1.10.9 Successful Incoming BSC Handovers per BSC (1800/1900 to
900/850)
Counter
ZCH943Z: Successful Incoming BSC Handovers per BSC (1800/1900 to 900/850)
Meaning
This counter measures the number of successful incoming BSC handovers per BSC(1800/1900 to 900/850).
The channels can be SDCCHs and TCHs.
You can know the handover performance by referring to Attempted Incoming BSC Handovers per BSC (1800/1900 to 900/850).
The handover is between only M1800/1900 and M900/850.
Trigger Point
None.
Formula
Successful Incoming BSC Handovers per BSC (1800/1900 to 900/850)= (∑<
=
N i
i 0
Incoming
External Inter-Cell Handover Requests (SDCCH) (1800/1900-900/850)+∑<
=
N i
i 0
Incoming
External Inter-Cell Handover Requests (TCH) (1800/1900-900/850)) - (∑<
=
N i
i 0
Failed Incoming
External Inter-Cell Handovers (SDCCH) (1800/1900-900/850)+∑<
=
N i
i 0
Failed Incoming
External Inter-Cell Handovers (TCH) (1800/1900-900/850))
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference 1 BSC Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 1-93
1.10.10 Attempted Outgoing BSC Handovers per BSC (900/850 to1800/1900)
CounterZCH930Y: Attempted Outgoing BSC Handovers per BSC (900/850 to 1800/1900)
Meaning
This counter measures the number of attempted outgoing BSC handovers per BSC (900/850
to 1800/1900).This counter is measured based on the channel type, signaling points, andhandover initiation causes.
The channels can be SDCCHs, TCHFs, and TCHHs.
The handover between different signaling points in a BSC is also called outgoing external
inter-cell handover.
This counter indicates the frequency of attempted outgoing BSC handovers per BSC. You canknow the handover performance by referring to Successful Outgoing BSC Handovers per
BSC (900/850 to 1800/1900).
The handover is between only M900/850 and M1800/1900.
Trigger Point
None.
Formula
Attempted Outgoing BSC Handovers per BSC (900/850 to 1800/1900)=∑<
=
N i
i 0
Outgoing
External Inter-Cell Handover Requests (SDCCH) (Excluding Directed Retry) (900/850-
1800/1900)+∑<
=
N i
i 0
Outgoing External Inter-Cell Handover Requests (TCHF) (Excluding
Directed Retry) (900/850-1800/1900)+∑<
=
N i
i 0
Outgoing External Inter-Cell Handover Requests
(TCHH) (Excluding Directed Retry) (900/850-1800/1900)+∑<
=
N i
i 0
Outgoing External Inter-Cell
Handover Requests (Directed Retry) (900/850-1800/1900)
1.10.11 Attempted Outgoing BSC Handovers per BSC (1800/1900to 900/850)
Counter
ZCH930Z: Attempted Outgoing BSC Handovers per BSC (1800/1900 to 900/850)
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1 BSC Measurement
HUAWEI BSC6000 Base Station Controller
Performance Counter Reference
1-94 Huawei Technologies Proprietary Issue 03 (2007-05-09)
Meaning
This counter measures the number of attempted outgoing BSC handovers per BSC
(1800/1900 to 900/850).This counter is measured based on the channel type, signaling points,
and handover initiation causes.
The channels can be SDCCHs, TCHFs, and TCHHs.
The handover between different signaling points in a BSC is also called outgoing externalinter-cell handover.
This counter indicates the frequency of attempted outgoing BSC handovers per BSC. You can
know the handover performance by referring to Successful Outgoing BSC Handovers perBSC (1800/1900 to 900/850).
The handover is between only M1800/1900 and M900/850.
Trigger Point
None.
Formula
Attempted Outgoing BSC Handovers per BSC (1800/1900 to 900/850)=∑<
=
N i
i 0
Outgoing
External Inter-Cell Handover Requests (SDCCH) (Excluding Directed Retry) (1800/1900-
900/850)+∑<
=
N i
i
0
Outgoing External Inter-Cell Handover Requests (TCHF) (Excluding Directed
Retry) (1800/1900-900/850)+∑<
=
N i
i 0
Outgoing External Inter-Cell Handover Requests (TCHH)
(Excluding Directed Retry) (1800/1900-900/850)+∑<
=
N i
i 0
Outgoing External Inter-Cell
Handover Requests (Directed Retry) (1800/1900-900/850)
1.10.12 Successful Outgoing BSC Handovers per BSC (900/850 to1800/1900)
Counter
ZCH933Y: Successful Outgoing BSC Handovers per BSC (900/850 to 1800/1900)
Meaning
This counter measures the number of successful outgoing BSC handovers per BSC (900/850
to 1800/1900). This counter is measured based on the channel type and signaling points. Thehandover initiation causes are direct retry and indirect retry.
The channels can be SDCCHs and TCHs.
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference 1 BSC Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 1-95
The handover is between only M900/850 and M1800/1900.
Trigger Point
None.
Formula
Successful Outgoing BSC Handovers per BSC (900/850 to 1800/1900)= (∑<
=
N i
i 0
Outgoing
External Inter-Cell Handover Requests (SDCCH) (Excluding Directed Retry) (1800/1900-
900/850)+∑<
=
N i
i 0
Outgoing External Inter-Cell Handover Requests (TCHF) (Excluding Directed
Retry) (1800/1900-900/850)+∑
<
=
N i
i 0
Outgoing External Inter-Cell Handover Requests (TCHH)
(Excluding Directed Retry) (1800/1900-900/850)+∑<
=
N i
i 0
Outgoing External Inter-Cell
Handover Requests (Directed Retry) (1800/1900-900/850))- (∑<
=
N i
i 0
Failed Outgoing External
Inter-Cell Handovers (SDCCH) (1800/1900-900/850)+∑<
=
N i
i 0
Failed Outgoing External Inter-
Cell Handovers (TCHF) (1800/1900-900/850)+∑<
=
N i
i 0
Failed Outgoing External Inter-Cell
Handovers (TCHH) (1800/1900-900/850)+∑<
=
N i
i 0
Failed Outgoing External Inter-Cell
Handovers (Directed Retry) (1800/1900-900/850)
1.10.13 Successful Outgoing BSC Handovers per BSC (1800/1900to 900/850)
Counter
ZCH933Z: Successful Outgoing BSC Handovers per BSC (1800/1900 to 900/850)
Meaning
This counter measures the number of successful outgoing BSC handovers per BSC
(1800/1900 to 900/850). This counter is measured based on the channel type and signaling points. The handover initiation causes are direct retry and indirect retry.
The channels can be SDCCHs and TCHs.
The handover is between only M1800/1900 and M900/850.
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1 BSC Measurement
HUAWEI BSC6000 Base Station Controller
Performance Counter Reference
1-96 Huawei Technologies Proprietary Issue 03 (2007-05-09)
Trigger Point
None.
Formula
Successful Outgoing BSC Handovers per BSC (1800/1900 to 900/850)= ([∑<
=
N i
i 0
Outgoing
External Inter-Cell Handover Requests (SDCCH) (Excluding Directed Retry) (1800/1900-
900/850)]+ [∑<
=
N i
i 0
External Outgoing Cell Handover Requests per BSC(TCHF) (Excluding
Directed Retry) (1800/1900-900/850)]+ [∑<
=
N i
i 0
Outgoing External Inter-Cell Handover
Requests (TCHH) (Excluding Directed Retry) (1800/1900-900/850)]+ [∑<
=
N i
i 0
Outgoing
External Inter-Cell Handover Requests (Directed Retry) (1800/1900-900/850)]) -
([∑<
=
N i
i 0
Failed Outgoing External Inter-Cell Handovers (SDCCH) (1800/1900-900/850)]+
[∑<
=
N i
i 0
Failed Outgoing External Inter-Cell Handovers (TCHF) (1800/1900-900/850)]+
[∑<
=
N i
i 0
Failed Outgoing External Inter-Cell Handovers (TCHH) (1800/1900-900/850)]+
[∑<
=
N i
i 0
Failed Outgoing External Inter-Cell Handovers (Directed Retry) (1800/1900-900/850)])
1.11 Handover KPI Measurement per BSC
1.11.1 Overview
Handover KPI Measurement per BSC refers to the measurement of the number of internal andexternal BSC handovers, handover requests, commands, and success ratio.
Table 1-11 lists the counters of Handover KPI Measurement per BSC.
Table 1-11 Counters of Handover KPI Measurement per BSC
Counter Section
ZCH300: Internal Intra-Cell Handover Requests per BSC 1.11.2
ZCH301: Internal Intra-Cell Handover Commands per BSC 1.11.3
ZCH303: Successful Internal Intra-Cell Handovers per BSC 1.11.4
ZCH310: Internal Outgoing Cell Handover Requests per BSC 1.11.5
ZCH311: Internal Outgoing Cell Handover Commands per BSC 1.11.6
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference 1 BSC Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 1-97
Counter Section
ZCH313: Successful Internal Outgoing Cell Handovers per BSC 1.11.7
ZCH320: Internal Incoming Cell Handover Requests per BSC 1.11.8
ZK3190: Internal Incoming Cell Handover Commands per BSC 1.11.9
ZCH323: Successful Internal Incoming Cell Handovers per BSC 1.11.10
ZCH330: External Outgoing Cell Handover Requests per BSC 1.11.11
ZCH331: External Outgoing Cell Handover Commands per BSC 1.11.12
ZCH333: Successful External Outgoing Cell Handovers per BSC 1.11.13
ZCH340: External Incoming Cell Handover Requests per BSC 1.11.14
ZK3191: External Incoming Cell Handover Commands per BSC 1.11.15
ZCH343: Successful External Incoming Cell Handovers per BSC 1.11.16
ZCH343: Dual-Band Handover Requests per BSC 1.11.17
ZK3173: Successful Dual-Band Handovers per BSC 1.11.18
ZK3189: External Outgoing Cell Handover Requests per BSC (Inter-
Signaling-Point Handover)
1.11.19
ZK3190: Failed External Outgoing Cell Handovers per BSC (Inter-
Signaling-Point Handover)
1.11.20
ZK3191: External Outgoing Cell Handover Commands per BSC (Inter-
Signaling-Point Handover)
1.11.21
ZK3174: Internal Handover Success Ratio per BSC 1.11.22
ZK3175: Intra-BSC Radio Handover Success Ratio per BSC 1.11.23
ZK3176: External Outgoing Cell Handover Success Ratio per BSC 1.11.24
ZK3177: External Outgoing Cell Radio Handover Success Ratio per
BSC
1.11.25
ZK3178: External Incoming Cell Handover Success Ratio per BSC 1.11.26
ZK3179: External Incoming Cell Radio Handover Success Ratio per
BSC
1.11.27
ZK3180: Handover Success Ratio per BSC 1.11.28
ZK3181: Radio Handover Success Ratio per BSC 1.11.29
ZK3182: Dual-Band Handover Success Ratio per BSC 1.11.30
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1.11.2 Internal Intra-Cell Handover Requests per BSC
Counter
ZCH300: Internal Intra-Cell Handover Requests per BSC
Meaning
This counter measures the number of internal intra-cell handover requests per BSC. The
channels can be SDCCHs, TCHFs, and TCHHs.
The handover initiation is related to the quality and strength of uplink and downlink signals,TA, better cell, cell load, fast level drop, MSC and OM intervention, and EDGE coverage.
This counter indicates the frequency of internal intra-cell handovers per BSC. You can know
the handover performance by referring to Internal Intra-Cell Handover Commands per BSC and Successful Internal Intra-Cell Handovers per BSC.
Trigger Point
None.
Formula
Internal Intra-Cell Handover Requests per BSC=∑<
=
N i
i 0
Internal Intra-Cell Handover Requests
This counter is the sum of the predefined counter Internal Intra-Cell Handover Requests in all
the cells controlled by a BSC.
1.11.3 Internal Intra-Cell Handover Commands per BSC
Counter
ZCH301: Internal Intra-Cell Handover Commands per BSC
Meaning
This counter measures the number of internal intra-cell handover commands per BSC. The
channels can be SDCCHs, TCHFs, and TCHHs.
The handover requests include intra-cell handover requests, channel type change requests, and
intra-cell concentric cell handover requests.
Trigger Point
None.
Formula
Internal Intra-Cell Handover Commands per BSC=∑<
=
N i
i 0
Internal Intra-Cell Handover
Commands
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This counter is the sum of the predefined counter Internal Intra-Cell Handover Commands inall the cells controlled by a BSC.
1.11.4 Successful Internal Intra-Cell Handovers per BSC
Counter
ZCH303: Successful Internal Intra-Cell Handovers per BSC
Meaning
This counter measures the number of successful internal intra-cell handovers per BSC. Thechannels can be SDCCHs, TCHFs, and TCHHs.
The handover requests include intra-cell handover requests, channel type change requests, and
intra-cell concentric cell handover requests.
You can know the handover performance by referring to Internal Intra-Cell HandoverRequests per BSC.
Trigger Point
None.
Formula
Successful Internal Intra-Cell Handovers per BSC=∑<
=
N i
i 0
Successful Internal Intra-Cell
Handovers
This counter is the sum of the predefined counter Successful Internal Intra-Cell Handovers in
all the cells controlled by a BSC.
1.11.5 Internal Outgoing Cell Handover Requests per BSC
Counter
ZCH310: Internal Outgoing Cell Handover Requests per BSC
Meaning
This counter measures the number of internal outgoing cell handover requests per BSC. The
channels can be SDCCHs, TCHFs, and TCHHs.
The BSC decides whether to initiate a handover based on the measurement report and the
handover algorithm. If the source cell and the object cell are controlled by one BSC, theinternal inter-cell handover is initiated.
The handover initiation is related to the quality and strength of uplink and downlink signals,
TA, better cell, cell load, fast level drop, MSC and OM intervention, and EDGE coverage.
The handover can be between M900/850 and M900/850, M1800/1900 and M1800/1900,
M900/850 and M1800/1900, M1800/1900 and M900/850.
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You can know the performance of internal outgoing cell handovers per BSC by referring tothis counter, Internal Outgoing Cell Handover Commands per BSC, and Successful InternalOutgoing Cell Handovers per BSC. You can also know the performance of internal inter-cell
handovers per BSC by referring to this counter and counters of internal BSC incoming cellhandover.
Trigger Point
None.
Formula
Internal Outgoing Cell Handover Requests per BSC=∑<
=
N i
i 0
Outgoing Internal Inter-Cell
Handover Requests
This counter is the sum of the predefined counter Outgoing Internal Inter-Cell HandoverRequests in all the cells controlled by a BSC.
1.11.6 Internal Outgoing Cell Handover Commands per BSC
Counter
ZCH311: Internal Outgoing Cell Handover Commands per BSC
Meaning
This counter measures the number of external outgoing cell handover commands per BSC.The channels can be SDCCHs, TCHFs, and TCHHs.
During the process of internal outgoing cell handover, the BSC sends the HO CMD message
to the MS through the source cell. This counter is measured according to the channel type,handover initiation cause, and handover bands type.
The handover initiation is related to the quality and strength of uplink and downlink signals,
TA, better cell, cell load, fast level drop, MSC and OM intervention, and EDGE coverage.
The handover can be between M900/850 and M900/850, M1800/1900 and M1800/1900,M900/850 and M1800/1900, M1800/1900 and M900/850.
You can know the handover performance by referring to Internal Outgoing Cell Handover
Requests per BSC.
Trigger Point
None.
Formula
Internal Outgoing Cell Handover Commands per BSC=∑<
=
N i
i 0
Outgoing Internal Inter-Cell
Handover Commands
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This counter is the sum of the predefined counter Outgoing Internal Inter-Cell HandoverCommands in all the cells controlled by a BSC.
1.11.7 Successful Internal Outgoing Cell Handovers per BSC
Counter
ZCH313: Successful Internal Outgoing Cell Handovers per BSC
Meaning
This counter measures the number of successful internal outgoing cell handovers per BSC.The channels can be SDCCHs, TCHFs, and TCHHs.
The handover initiation is related to the quality and strength of uplink and downlink signals,
TA, better cell, cell load, fast level drop, MSC and OM intervention, and EDGE coverage.
You can know the handover performance by referring to Internal Outgoing Cell HandoverRequests per BSC.
Trigger Point
None.
Formula
Successful Internal Outgoing Cell Handovers per BSC=∑<
=
N i
i 0
Successful Outgoing Internal
Inter-Cell Handover
This counter is the sum of the predefined counter Successful Outgoing Internal Inter-Cell
Handover in all the cells controlled by a BSC.
1.11.8 Internal Incoming Cell Handover Requests per BSC
Counter
ZCH320: Internal Incoming Cell Handover Requests per BSC
Meaning
This counter measures the number of internal incoming cell handover requests per BSC. The
channels can be SDCCHs, TCHFs, and TCHHs.
The BSC decides whether to initiate a handover based on the measurement report and the
handover algorithm. If the source cell and the object cell are controlled by one BSC, theinternal inter-cell handover is initiated.
The handover can be between M900/850 and M900/850, M1800/1900 and M1800/1900,
M900/850 and M1800/1900, M1800/1900 and M900/850.
You can know the handover performance by referring to Internal Incoming Cell Handover
Commands per BSC.
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Trigger Point
None.
Formula
Internal Incoming Cell Handover Requests per BSC=∑<
=
N i
i 0
Incoming Internal Inter-Cell
Handover Requests
This counter is the sum of the predefined counter Incoming Internal Inter-Cell HandoverRequests in all the cells controlled by a BSC.
1.11.9 Internal Incoming Cell Handover Commands per BSC
CounterZK3190: Internal Incoming Cell Handover Commands per BSC
Meaning
This counter measures the number of internal incoming cell handover commands per BSC.
The channels can be SDCCHs, TCHFs, and TCHHs.
During the process of internal incoming cell handover, the BSC sends the HO CMD message
to the MS through the source cell. This counter is measured according to the channel type,handover initiation cause, and handover bands type.
The handover can be between M900/850 and M900/850, M1800/1900 and M1800/1900,
M900/850 and M1800/1900, M1800/1900 and M900/850.
You can know the performance of internal incoming cell handovers per BSC by referring tothis counter and Successful Internal Incoming Cell Handovers per BSC. You can also know
the performance of internal inter-cell handovers per BSC by referring to this counter andcounters of internal inter-cell handovers per BSC.
Trigger Point
None.
Formula
Internal Incoming Cell Handover Commands per BSC =∑<
=
N i
i 0
Incoming Internal Inter-Cell
Handover Responses
This counter is the sum of the predefined counter Incoming Internal Inter-Cell HandoverResponses in all the cells controlled by a BSC.
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1.11.10 Successful Internal Incoming Cell Handovers per BSC
Counter
ZCH323: Successful Internal Incoming Cell Handovers per BSC
Meaning
This counter measures the number of successful internal incoming cell handovers per BSC.
The channels can be SDCCHs, TCHFs, and TCHHs.
The handover initiation is related to the quality and strength of uplink and downlink signals,TA, better cell, cell load, fast level drop, MSC and OM intervention, and EDGE coverage.
You can know the handover performance by referring to Internal Incoming Cell Handover
Requests per BSC and Internal Incoming Cell Handover Commands per BSC.
Trigger Point
None.
Formula
Successful Internal Incoming Cell Handovers per BSC=∑<
=
N i
i 0
Successful Internal Incoming
Cell Handovers
This counter is the sum of the predefined counter Successful Internal Incoming Cell
Handovers in all the cells controlled by a BSC.
1.11.11 External Outgoing Cell Handover Requests per BSC
Counter
ZCH330: External Outgoing Cell Handover Requests per BSC
Meaning
This counter measures the number of external outgoing cell handover requests per BSC. Thechannels can be SDCCHs, TCHFs, and TCHHs.
This counter is measured based on the channel type, signaling points, and handover initiationcauses.
The handover between different signaling points in a BSC is also called outgoing external
inter-cell handover.
The handover initiation is related to the quality and strength of uplink and downlink signals,TA, better cell, cell load, fast level drop, MSC and OM intervention, and EDGE coverage.
You can know the performance of external outgoing cell handovers per BSC by referring to
this counter, External Outgoing Cell Handover Commands per BSC and Successful External
Outgoing Cell Handovers per BSC. You can also know the performance of external cell
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handovers per BSC by referring to this counter and counters of external incoming cellhandovers per BSC.
Trigger Point
None.
Formula
External Outgoing Cell Handover Requests per BSC=∑<
=
N i
i 0
External Outgoing Cell Handover
Requests
This counter is the sum of the predefined counter External Outgoing Cell Handover Requestsin all the cells controlled by a BSC.
1.11.12 External Outgoing Cell Handover Commands per BSC
Counter
ZCH331: External Outgoing Cell Handover Commands per BSC
Meaning
This counter measures the number of external outgoing cell handover commands per BSC.
The channels can be SDCCHs, TCHFs, and TCHHs.
This counter is measured based on the channel type, signaling points, and handover initiation
causes.
The handover between different signaling points in a BSC is also called outgoing external
inter-cell handover.
The handover initiation is related to the quality and strength of uplink and downlink signals,TA, better cell, cell load, fast level drop, MSC and OM intervention, and EDGE coverage.
You can know the performance of external outgoing cell handovers per BSC by referring tothis counter, External Outgoing Cell Handover Requests per BSC, and Successful ExternalOutgoing Cell Handovers per BSC. You can also know the performance of external cell
handovers per BSC by referring to this counter and counters of external incoming cell
handovers per BSC.
Trigger Point
None.
Formula
External Outgoing Cell Handover Commands per BSC=∑<
=
N i
i 0
External Outgoing Cell
Handover Commands
This counter is the sum of the predefined counter External Outgoing Cell Handover
Commands in all the cells controlled by a BSC.
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1.11.13 Successful External Outgoing Cell Handovers per BSC
Counter
ZCH333: Successful External Outgoing Cell Handovers per BSC
Meaning
This counter measures the number of successful external outgoing cell handovers per BSC.
The channels can be SDCCHs, TCHFs, and TCHHs.
The handover initiation is related to the quality and strength of uplink and downlink signals,TA, better cell, cell load, fast level drop, MSC and OM intervention, and EDGE coverage.
You can know the handover performance by referring to External Outgoing Cell Handover
Requests per BSC and External Outgoing Cell Handover Commands per BSC.
Trigger Point
None.
Formula
Successful External Outgoing Cell Handovers per BSC=∑<
=
N i
i 0
Successful External Outgoing
Cell Handovers
This counter is the sum of the predefined counter Successful External Outgoing Cell
Handovers in all the cells controlled by a BSC.
1.11.14 External Incoming Cell Handover Requests per BSC
Counter
ZCH340: External Incoming Cell Handover Requests per BSC
Meaning
This counter measures the number of external incoming cell handover requests per BSC. Thechannels can be SDCCHs, TCHFs, and TCHHs.
If the source cell and the object cell are controlled by different BSCs, the external BSChandover is initiated. This counter is measured based on the channel type, the type of bandsthat the handover crosses, and the seized TCH channel type.
The handover can be between M900/850 and M900/850, M1800/1900 and M1800/1900,M900/850 and M1800/1900, M1800/1900 and M900/850.
You can know the performance of external incoming cell handovers per BSC by referring to
this counter, External Incoming Cell Handover Commands per BSC, and Successful ExternalIncoming Cell Handovers per BSC. You can also know the performance of external cell
handovers per BSC by referring to this counter and counters of external BSC outgoing cellhandovers.
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Trigger Point
None.
Formula
External Incoming Cell Handover Requests per BSC=∑<
=
N i
i 0
External Incoming Cell Handover
Requests
This counter is the sum of the predefined counter External Incoming Cell Handover Requestsin all the cells controlled by a BSC.
1.11.15 External Incoming Cell Handover Commands per BSC
CounterZK3191: External Incoming Cell Handover Commands per BSC
Meaning
This counter measures the number of external incoming cell handover commands per BSC.
The channels can be SDCCHs, TCHFs, and TCHHs.
After BSC2 receives an HO REQ message, it requests for a channel from the target cell and
activates it. BSC2 requests for speech service resources. If the request succeeds, the BSC2returns an HO REQ ACK message to the MSC.
This counter is measured based on the channel type and the type of bands that the handover
crosses.
The handover can be between M900/850 and M900/850, M1800/1900 and M1800/1900,M900/850 and M1800/1900, M1800/1900 and M900/850.
You can know the performance of external incoming cell handovers per BSC by referring to
this counter, External Incoming Cell Handover Requests per BSC, and Successful ExternalIncoming Cell Handovers per BSC. You can also know the performance of external cell
handovers per BSC by referring to this counter and counters of external cell handovers perBSC.
Trigger Point
None.
Formula
External Incoming Cell Handover Commands per BSC =∑<
=
N i
i 0
Incoming External Inter-Cell
Handover Responses
This counter is the sum of the predefined counter Incoming External Inter-Cell Handover
Responses in all the cells controlled by a BSC.
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1.11.16 Successful External Incoming Cell Handovers per BSC
Counter
ZCH343: Successful External Incoming Cell Handovers per BSC
Meaning
During an external BSC handover, the object BSC starts preparing a new channel after it
receives a HANDOVER REQUEST message from the MSC. After the new channel is prepared and the MS successfully accesses the object cell, the BSC sends a HANDOVERCOMPLETE message to the MSC. This handover succeeds.
This counter measures the number of successful external incoming cell handovers per BSC.The channels can be SDCCHs, TCHFs, and TCHHs.
The handover initiation is related to the quality and strength of uplink and downlink signals,
TA, better cell, cell load, fast level drop, MSC and OM intervention, and EDGE coverage.
You can know the handover performance by referring to External Incoming Cell HandoverRequests per BSC and External Incoming Cell Handover Commands per BSC.
Trigger Point
None.
Formula
Successful External Incoming Cell Handovers per BSC=∑
<
=
N i
i 0Successful Incoming External
Inter-Cell Handovers
This counter is the sum of the predefined counter Successful Incoming External Inter-CellHandovers in all the cells controlled by a BSC.
1.11.17 Dual-Band Handover Requests per BSC
Counter
ZK3170: Dual-Band Handover Requests per BSC
Meaning
This counter measures the number of dual-band handover requests per BSC.
Trigger Point
None.
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Formula
Dual-Band Handover Requests per BSC=∑<
=
N i
i 0
Dual-Band Handover Requests
This counter is the sum of the predefined counter Dual-Band Handover Requests in all thecells controlled by a BSC.
1.11.18 Successful Dual-Band Handovers per BSC
Counter
ZK3173: Successful Dual-Band Handovers per BSC
Meaning
This counter measures the number of successful dual-band handovers per BSC.
Trigger Point
None.
Formula
Successful Dual-Band Handovers per BSC =∑<
=
N i
i 0 Successful Dual-Band Handovers
This counter is the sum of the predefined counter Successful Dual-Band Handovers in all thecells controlled by a BSC.
1.11.19 External Outgoing Cell Handover Requests per BSC(Inter-Signaling-Point Handover)
Counter
ZK3192: External Outgoing Cell Handover Requests per BSC (Inter-Signaling-Point
Handover)
Meaning
This counter measures the number of external outgoing cell handover requests per BSC (inter-
signaling-point handover).
Trigger Point
None.
Formula
None.
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1.11.20 Failed External Outgoing Cell Handovers per BSC (Inter-Signaling-Point Handover)
CounterZK3193: Failed External Outgoing Cell Handovers per BSC (Inter-Signaling-Point Handover)
Meaning
This counter measures the number of failed external outgoing cell handovers per BSC (inter-
signaling-point handover).
Trigger Point
None.
Formula
None.
1.11.21 External Outgoing Cell Handover Commands per BSC(Inter-Signaling-Point Handover)
Counter
ZK3194: External Outgoing Cell Handover Commands per BSC (Inter-Signaling-Point
Handover)
Meaning
This counter measures the number of external outgoing cell handover commands per BSC
(inter-signaling-point handover).
Trigger Point
None.
Formula
None.
1.11.22 Internal Handover Success Ratio per BSC
Counter
ZK3174: Internal Handover Success Ratio per BSC
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Meaning
This counter measures the success ratio of internal handovers per BSC. Handover failures are
due to all reasons, including bad quality, internal BSC channel congestion, and MSC
intervention.
Trigger Point
None.
Formula
Internal Handover Success Ratio per BSC= (([Successful Internal Intra-Cell Handovers per
BSC]+[Successful Internal Incoming Cell Handovers per BSC]))/([Internal Intra-CellHandover Requests per BSC]+[Internal Incoming Cell Handover Requests per BSC]))*{100}
1.11.23 Intra-BSC Radio Handover Success Ratio per BSCCounter
ZK3175: Intra-BSC Radio Handover Success Ratio per BSC
Meaning
This counter measures the success ratio of internal radio handovers per BSC. Handover
failure causes are only related to the Um interface.
Trigger Point
None.
Formula
Intra-BSC Radio Handover Success Ratio per BSC=(([Successful Internal Intra-Cell
Handovers per BSC]+[Successful Internal Incoming Cell Handovers per BSC]))/([InternalIntra-Cell Handover Commands per BSC]+[Incoming Internal Inter-Cell Handover Responses
per BSC]))*{100}
1.11.24 External Outgoing Cell Handover Success Ratio per BSC
Counter
ZK3176: External Outgoing Cell Handover Success Ratio per BSC
Meaning
This counter measures the success ratio of external outgoing cell handovers per BSC.
Handover failure causes include bad quality, internal BSC channel congestion, and MSC
intervention.
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Trigger Point
None.
FormulaExternal Outgoing Cell Handover Success Ratio per BSC= ([Successful External Outgoing
Cell Handovers per BSC]/[External Outgoing Cell Handover Requests per BSC])*{100}
1.11.25 External Outgoing Cell Radio Handover Success Ratio perBSC
Counter
ZK3177: External Outgoing Cell Radio Handover Success Ratio per BSC
Meaning
This counter measures the success ratio of external outgoing cell radio handovers per BSC.
Handover failure causes are only related to the air interface.
Trigger Point
None.
Formula
External Outgoing Cell Radio Handover Success Ratio per BSC= ([Successful External
Outgoing Cell Handovers per BSC]/[External Outgoing Cell Handover Commands perBSC])*{100}
1.11.26 External Incoming Cell Handover Success Ratio per BSC
Counter
ZK3178: External Incoming Cell Handover Success Ratio per BSC
Meaning
This counter measures the success ratio of external incoming cell handovers per BSC.
Trigger Point
None.
Formula
External Incoming Cell Handover Success Ratio per BSC=([Successful External Incoming
Cell Handovers per BSC]/[External Incoming Cell Handover Requests per BSC])*{100}
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1.11.27 External Incoming Cell Radio Handover Success Ratio perBSC
CounterZK3179: External Incoming Cell Radio Handover Success Ratio per BSC
Meaning
This counter measures the success ratio of external incoming cell radio handovers per BSC.
Trigger Point
None.
Formula
External Incoming Cell Radio Handover Success Ratio per BSC=([Successful External
Incoming Cell Handovers per BSC]/[ Incoming External Inter-Cell Handover Requests per
BSC])*{100}
1.11.28 Handover Success Ratio per BSC
Counter
ZK3180: Handover Success Ratio per BSC
Meaning
This counter measures the success ratio of handovers per BSC including internal BSChandover, external BSC outgoing cell handover, and external BSC incoming cell handover.
Handover failures are due to all reasons, including bad quality, internal BSC channelcongestion, and MSC intervention.
Trigger Point
None.
FormulaHandover Success Ratio per BSC= (([Successful Internal Intra-Cell Handovers per
BSC]+[Successful Internal Incoming Cell Handovers per BSC]+[Successful External
Outgoing Cell Handovers per BSC]+[Successful External Incoming Cell Handovers perBSC])/([Internal Intra-Cell Handover Requests per BSC]+[Internal Incoming Cell Handover
Requests per BSC]+[External Outgoing Cell Handover Requests per BSC]+[ExternalIncoming Cell Handover Requests per BSC]))*{100}
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1.11.29 Radio Handover Success Ratio per BSC
Counter
ZK3181: Radio Handover Success Ratio per BSC
Meaning
This counter measures the success ratio of radio handovers per BSC.
Trigger Point
None.
Formula
Radio Handover Success Ratio per BSC= (([Successful Internal Intra-Cell Handovers per
BSC]+[Successful Internal Incoming Cell Handovers per BSC]+[Successful External
Outgoing Cell Handovers per BSC]+[Successful External Incoming Cell Handovers perBSC])/([Internal Intra-Cell Handover Commands per BSC]+[ Incoming Internal Inter-CellHandover Responses per BSC]+[External Outgoing Cell Handover Commands per
BSC]+[ Incoming External Inter-Cell Handover Responses per BSC]))*{100}
1.11.30 Dual-Band Handover Success Ratio per BSC
Counter
ZK3182: Dual-Band Handover Success Ratio per BSC
Meaning
This counter measures the success ratio of dual-band handovers per BSC. Handover failures
are due to all reasons, including bad quality, internal BSC channel congestion, and MSCintervention.
Trigger Point
None.
Formula
Dual-Band Handover Success Ratio per BSC=([Successful Dual-Band Handovers per
BSC]/[Dual-Band Handover Requests per BSC])*{100}
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2 SCCP Measurement
About This Chapter
The following table lists the sections of this chapter.
Section Describes
2.1 Overview of SCCPMeasurement
The functions and measurement unit of the SCCPMeasurement.
2.2 SCCP OSP Measurement The functions and counters of SCCP OSP Measurement.
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2.1 Overview of SCCP Measurement
SCCP Measurement refers to the measurement of SCCP original signaling points (OSPs).Table 2-1 lists the measurement unit of SCCP Measurement.
Table 2-1 Measurement unit of SCCP Measurement
Measurement Unit Section
SCCP OSP Measurement 2.2
2.2 SCCP OSP Measurement
2.2.1 Overview of SCCP OSP Measurement
SCCP OSP Measurement refers to the measurement of the number of various messages theSCCP sends or receives.
Table 2-2 lists the counters of SCCP OSP Measurement.
Table 2-2 Counters of SCCP OSP Measurement
Counter SectionL7001: Number of Sent UDT Messages 2.2.2
L7002: Number of Received UDT Messages 2.2.3
L7003: Number of Sent XUDT Messages 2.2.4
L7004: Number of Received XUDT Messages 2.2.5
L7005: Number of Sent CR Messages 2.2.6
L7006: Number of Received CR Messages 2.2.7
L7007: Number of Sent CREFR Messages 2.2.8
L7008: Number of Received CREFR Messages 2.2.9
RL7009: Ratio of CREF by Peer SCCP 2.2.10
RL7010: Ratio of CREF by Local SCCP 2.2.11
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2.2.2 Number of Sent UDT Messages
Counter
L7001: Number of Sent UDT Messages.
Meaning
This counter measures the number of Unitdata (UDT) meassages sent by the SCCP.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 2-1.
Figure 2-1 SCCP Measurement
BSC MSC
A interface
This counter is measured when the SCCP sends a UDT message.
Formula
None.
2.2.3 Number of Received UDT Messages
Counter
L7002: Number of Received UDT Messages.
Meaning
This counter measures the number of UDT meassage received by the SCCP.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 2-1.
This counter is measured when the SCCP receives a UDT message.
Formula
None.
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2.2.4 Number of Sent XUDT Messages
Counter
L7003: Number of Sent XUDT Messages.
Meaning
This counter measures the number of Extended Unit Data (XUDT) messages sent by the
SCCP.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 2-1.
This counter is measured when the SCCP sends an XUDT message.
Formula
None.
2.2.5 Number of Received XUDT Messages
Counter
L7004: Number of Received XUDT Messages.
MeaningThis counter measures the number of XUDT messages received by the SCCP.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 2-1.
This counter is measured when the SCCP receives an XUDT message.
Formula
None.
2.2.6 Number of Sent CR Messages
Counter
L7005: Number of Sent CR Messages.
Meaning
This counter measures the number of Connection Request (CR) messages sent by the SCCP.
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Trigger Point
The trigger point is on the BSC side, as shown in Figure 2-1.
This counter is measured when the SCCP sends a CR message.
Formula
None.
2.2.7 Number of Received CR Messages
Counter
L7006: Number of Received CR Messages.
MeaningThis counter measures the number of CR messages received by the SCCP.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 2-1.
This counter is measured when the SCCP receives a CR message.
Formula
None.
2.2.8 Number of Sent CREF Messages
Counter
L7007: Number of Sent CREF Messages.
Meaning
This counter measures the number of Connection Refused (CREF) messages sent by the
SCCP.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 2-1.
This counter is measured when the SCCP sends a CREF message.
Formula
None.
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2.2.9 Number of Received CREF Messages
Counter
L7008: Number of Received CREF Messages.
Meaning
This counter measures the number of CREF messages received by the SCCP.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 2-1.
This counter is measured when the SCCP receives a CREF message.
Formula
None.
2.2.10 Ratio of CREF by Peer SCCP
Counter
RL7009: Ratio of CREF by Peer SCCP.
Meaning
This counter is predefined. It measures the ratio of the Number of Received CREF Messagesto Number of Sent CR Messages.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 2-1.
This counter is measured when the measurement results are reported in a GP.
Formula
Ratio of CREF by Peer SCCP (%) = Number of Received CREF Messages *100/ Number of
Sent CR Messages.
2.2.11 Ratio of CREF by Local SCCP
Counter
RL7010: Ratio of CREF by Local SCCP.
Meaning
This counter is predefined. It measures the ratio of the Number of Sent CREF Messages to
Number of Received CR Messages.
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Trigger Point
The trigger point is on the BSC side, as shown in Figure 2-1.
This counter is measured when the measurement results are reported in a GP.
Formula
Ratio of CREF by Local SCCP (%) =
Number of Sent CREF Messages *100/ Number of Received CR Messages
2.2.12 Received CC Messages
Counter
L7011: Received CC Messages.
Meaning
This counter measures the number of times the SCCP module receives a Connection Confirm
(CC) message.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 2-1.
The measurement is triggered when the SCCP module receives a CC message.
Formula
None.
2.2.13 Sent CC Messages
Counter
L7012: Sent CC Messages.
Meaning
This counter measures the number of times the SCCP module sends a CC message.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 2-1.
The measurement is triggered when the SCCP module sends a CC message.
Formula
None.
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2.2.14 Sent DT1 Messages
Counter
L7013: Sent DT1 Messages.
Meaning
This counter measures the number of times the SCCP module sends a data form 1 (DT1)
message.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 2-1.
The measurement is triggered when the SCCP module sends a DT1 message.
Formula
None.
2.2.15 Received DT1 Messages
Counter
L7014: Received DT1 Messages.
MeaningThis counter meausres the number of times the SCCP module receives a DT1 message.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 2-1.
The measurement is triggered when the SCCP module receives a DT1 message.
Formula
None.
2.2.16 Sent RLSD Messages
Counter
L7015: Sent RLSD Messages.
Meaning
This counter measures the number of times the SCCP module sends a released (RLSD)
message.
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Trigger Point
The trigger point is on the BSC side, as shown in Figure 2-1.
The measurement is triggered when the SCCP module sends a RLSD message.
Formula
None.
2.2.17 Received RLSD Messages
Counter
L7016: Received RLSD Messages.
MeaningThis counter measures the number of times the SCCP module receives an RLSD message.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 2-1.
The measurement is triggered when the SCCP module receives a RLSD message.
Formula
None.
2.2.18 Sent RLC Messages
Counter
L7017: Sent RLC Messages.
Meaning
This counter measures the number of times the SCCP module sends a release complete (RLC)
message.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 2-1.
The measurement is triggered when the SCCP module sends an RLC message.
Formula
None.
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2.2.19 Received RLC Messages
Counter
L7018: Received RLC Messages.
Meaning
This counter measures the number of times the SCCP module receives an RLC message.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 2-1.
The measurement is triggered when the SCCP module receives a RLC message.
Formula
None.
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Performance Counter Reference 3 MTP3 Measurement
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3 MTP3 Measurement
About This Chapter
The following table lists the sections of this chapter.
Section Describes
3.1 Overview of MTP3Measurement
The functions and measurement units of MTP3Measurement.
3.2 MTP3 Link Measurement The functions and counters of MTP3 Link Measurement.
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3.1 Overview of MTP3 Measurement
Message Transfer Part Level 3 (MTP3) Measurement is used to measure the MTP3 link, linkset, and Destination Signaling Points (DSPs).
Table 3-1 lists the measurement units of MTP3 Measurement.
Table 3-1 MTP3 Measurement Units
Measurement Unit Section
MTP3 Link Measurement 3.2
3.2 MTP3 Link Measurement
3.2.1 Overview
MTP3 Link Measurement is used to measure the MTP3 link in normal, faulty, congestion, and
changing status. The measurement includes the number of messages sent and received on thelink, the duration of various states, and the number of status changes.
Table 3-2 lists the counters of MTP3 Link Measurement.
Table 3-2 Counters of MTP3 Link Measurement
Counter Section
TL6001: In-Service Duration of MTP3 Link 3.2.2
L6002: Out-of-Service Duration of MTP3 Link 3.2.3
L6003: Duration of MTP3 Link Fault 3.2.4
L6004: Duration of MTP3 Link Local Inhibition 3.2.5
L6005: Duration of MTP3 Link Remote Inhibition 3.2.6
L6006: Duration of MTP3 Link Remote Processor Fault 3.2.7
L6007: Duration of MTP3 Link Congestion 3.2.8
L6008: Failures of MTP3 Link for All Reasons 3.2.9
L6009: MTP3 Link Local Inhibitions 3.2.10
L6010: MTP3 Link Remote Inhibitions 3.2.11
L6011: MTP3 Link Remote Processor Failures 3.2.12
L6012: MTP3 Link Local Switchovers 3.2.13
L6013: MSUs Sent on MTP3 Link 3.2.14
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Counter Section
L6014: MSUs Received on MTP3 Link 3.2.15
L6015: MTP3 Link Congestions 3.2.16
L6016: Discarded MSUs during Link Congestion 3.2.17
L6017: Transfer Inhibition Messages Received on MTP3 Link 3.2.18
L6018: Octets in SIFs or SIOs Sent on MTP3 Link 3.2.19
L6019: Octets in SIFs and SIOs Received on MTP3 Link 3.2.20
L6020: 64 kbit/s Timeslots Seized by Signaling Link 3.2.21
RL6021: Ratio of Transmit Bandwidth to Total Bandwidth 3.2.22
RL6022: Ratio of Receive Bandwidth to Total Bandwidth 3.2.23
L6023: Bytes of MTP2 Message Head in MSU Messages on MTP3 Link 3.2.24
3.2.2 In-Service Duration of MTP3 Link
Counter
L6001: In-Service Duration of MTP3 Link.
MeaningThis counter measures the duration of the MTP3 link in service.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 3-1.
Figure 3-1 MTP3 Measurement
BSC MSC
A interface
This counter increases by 1 every second when the MTP3 link is in service.
Formula
In-Service Duration of MTP3 Link=
{GP}*{60}) – [Out-of-Service Duration of MTP3 Link]
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3.2.3 Out-of-Service Duration of MTP3 Link
Counter
L6002: Out-of-Service Duration of MTP3 Link.
Meaning
This counter measures the Out-of-Service Duration of MTP3 Link.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 3-1.
This counter increases by 1 every second when the MTP3 link is out of service.
Formula
None.
3.2.4 Duration of MTP3 Link Fault
Counter
L6003: Duration of MTP3 Link Fault.
Meaning
This counter measures the duration of MTP3 link fault.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 3-1.
This counter increases by 1 every second when the MTP3 link is faulty.
Formula
None.
3.2.5 Duration of MTP3 Link Local Inhibition
Counter
L6004: Duration of MTP3 Link Local Inhibit.
Meaning
This counter measures the duration of the MTP3 link local inhibition.
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Trigger Point
The trigger point is on the BSC side, as shown in Figure 3-1.
This counter increases by 1 every second when the MTP3 link is at the local end inhibition.
Formula
None.
3.2.6 Duration of MTP3 Link Remote Inhibition
Counter
L6005: Duration of MTP3 Link Remote Inhibit.
MeaningThis counter measures the duration of MTP3 link remote inhibition.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 3-1.
This counter increases by 1 every second when the MTP3 link is in remote inhibition.
Formula
None.
3.2.7 Duration of MTP3 Link Remote Processor Fault
Counter
L6006: Duration of MTP3 Link Remote Processor Fault.
Meaning
This counter measures the duration of MTP3 link remote processor fault.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 3-1.
This counter increases by 1 every second when the MTP3 link remote processor is faulty.
Formula
None.
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3.2.8 Duration of MTP3 Link Congestion
Counter
L6007: Duration of MTP3 Link Congestion.
Meaning
This counter measures the duration of MTP3 link congestion.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 3-1.
This counter increases by 1 every second when the MTP3 link is congested.
Formula
None.
3.2.9 Failures of MTP3 Link for All Reasons
Counter
L6008: Failures of MTP3 Link for All Reasons.
Meaning
This counter measures the number of MTP3 link failures.
The MTP2 reports link disruption, and then the MTP3 detects the number of link failures
caused by signaling link disruption or link deactivation by the user.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 3-1.
This counter is measured when:
The MTP2 reports link disruption.
The signaling link is disrupted. Link deactivation by the user succeeds.
Formula
None.
3.2.10 MTP3 Link Local Inhibitions
Counter
L6009: MTP3 Link Local Inhibitions.
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Meaning
This counter measures the number of MTP3 link local inhibitions.
The BSC inhibits a link on the LMT. If the inhibition does not lead to service interruption
between the BSC and the MSC, the local inhibition is considered to succeed.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 3-1.
This counter increases by 1 when the MTP3 link is inhibited at the local end.
Formula
None.
3.2.11 MTP3 Link Remote Inhibitions
Counter
L6010: MTP3 Link Remote Inhibitions.
Meaning
This counter measures the number of MTP3 link remote inhibitions.
The BSC receives a request from the MSC for inhibiting a link. If the inhibition does not lead
to service interruption between the BSC and the MSC, the remote inhibition is considered to
succeed.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 3-1.
This counter increases by 1 when the MTP3 link is inhibited at the remote end.
Formula
None.
3.2.12 MTP3 Link Remote Processor Failures
Counter
L6011: MTP3 Link Remote Processor Failures.
Meaning
This counter measures the number of failures of the MTP3 link remote processor.
The MTP3 link does not bear services after it receives a message indicating MSC processorfailure or detects an MSC processor failure. The MTP3 link recovers after it receives the
recover indication from the MTP2.
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Trigger Point
The trigger point is on the BSC side, as shown in Figure 3-1.
This counter increases by 1 when the MTP3 link remote processor is faulty.
Formula
None.
3.2.13 MTP3 Link Local Switchovers
Counter
L6012: MTP3 Link Local Switchovers.
MeaningThis counter measures the number of MTP3 link local switchovers.
If a signaling link becomes unavailable, the traffic on this link is transferred to other links.
This procedure is called a changeover.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 3-1.
This counter increases by 1 when the MTP3 link changeover occurs at the local end.
Formula
None.
3.2.14 MSUs Sent on MTP3 Link
Counter
L6013: MSUs Sent on MTP3 Link.
Meaning
This counter measures the number of Message Signal Units (MSUs) sent on the MTP3 link.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 3-1.
This counter increases by 1 when the MTP3 link sends an MSU.
Formula
None.
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3.2.15 MSUs Received on MTP3 Link
Counter
L6014: MSUs Received on MTP3 Link.
Meaning
This counter measures the number of MSUs received by the MTP3 link.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 3-1.
This counter increases by 1 when the MTP3 link receives an MSU.
Formula
None.
3.2.16 MTP3 Link Congestions
Counter
L6015: MTP3 Link Congestions.
Meaning
This counter measures the number of MTP3 link congestions.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 3-1.
This counter increases by 1 every time the MTP3 link is congested.
Formula
None.
3.2.17 Discarded MSUs During Link Congestion
Counter
L6016: Discarded MSUs During Link Congestion
Meaning
This counter measures the number of MSUs that the MTP3 discards during signaling linkcongestion.
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Trigger Point
The trigger point is on the BSC side, as shown in Figure 3-1.
This counter increases by 1 when the MTP3 discards an MSU during signaling link
congestion.
Formula
None.
3.2.18 Transfer Inhibition Messages Received on MTP3 Link
Counter
L6017: Transfer Inhibition Messages Received on MTP3 Link.
Meaning
This counter measures the number of transfer inhibition messages that the MTP3 receives.
If the MSC cannot reach a DSP, it sends the transfer inhibition message to the MTP3.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 3-1.
This counter increases by 1 when the MTP3 receives a transfer inhibition message from the
remote end.
Formula
None.
3.2.19 Octets in SIFs or SIOs Sent on MTP3 Link
Counter
L6018: Octets in SIFs or SIOs Sent on MTP3 Link.
MeaningThis counter measures the number of octets in the Signaling Information Fields (SIFs) and
Service Information Octets (SIOs) sent on the MTP3 link.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 3-1.
This counter is measured when the MTP3 link sends SIFs and SIOs that contain octets.
Formula
None.
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3.2.20 Octets in SIFs and SIOs Received by MTP3 Link
Counter
L6019: Octets in SIF and SIO Received by MTP3 Link.
Meaning
This counter measures the number of octets in SIFs and SIOs received by the MTP3 link.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 3-1.
This counter is measured when the MTP3 link receives SIFs and SIOs that contain octets.
Formula
None.
3.2.21 64 kbit/s Timeslots Occupied by a Signaling Link
Counter
L6020: 64 kbit/s Timeslots Occupied by a Signaling Link.
Meaning
This counter measures the number of 64 kbit/s timeslots occupied by a signaling link.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 3-1.
This counter is measured when a signaling link is set up.
You can skip this counter.
Formula None.
3.2.22 Ratio of Transmit Bandwidth to Total Bandwidth
Counter
RL6021: Ratio of Transmit Bandwidth to Total Bandwidth.
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Meaning
This counter measures the ratio of the transmit bandwidth to the total bandwidth of the
signaling link in a GP.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 3-1.
This counter is measured when the measurement result is reported in a GP.
Formula
Ratio of Transmit Bandwidth to Total Bandwidth=
(MSUs Sent on MTP3 Link * 6 + Octets in SIFs and SIOs Sent by MTP3) * 100/(8192 % 64
kbit/s Timeslots Seized by Signaling Link * GP * 60)
3.2.23 Ratio of Receive Bandwidth to Total Bandwidth
Counter
RL6022: Ratio of Receive Bandwidth to Total Bandwidth.
Meaning
This counter measures the ratio of the receive bandwidth to the total bandwidth of the
signaling link in a GP.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 3-1.
This counter is measured when the measurement result is reported in a GP.
Formula
Ratio of Receive Bandwidth to Total Bandwidth=
(MSUs Received by MTP3 Link * 6 + Octets in SIFs and SIOs Received by MTP3) *
100/(8192 * 64 kbit/s Timeslots Seized by Signaling Link * GP * 60)
3.2.24 Bytes of MTP2 Message Head in MSU Messages on MTP3Link
Counter
L6023: Bytes of MTP2 Message Head in MSU Messages on MTP3 Link
Meaning
This counter measures the bytes of the MTP2 message head in the MSU messages on the
MTP3 link.
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Trigger Point
The trigger point is on the BSC side, as shown in Figure 3-1.
This counter is measured when an MTP3 link object is created.
Formula
None.
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Performance Counter Reference 4 LAPD Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 4-1
4 LAPD Measurement
About This Chapter
The following table lists the sections of this chapter.
Section Describes
4.1 Overview of LAPDMeasurement
The function and measurement unit of LAPD LinkMeasurement.
4.2 LAPD Link Measurement The function and counters of LAPD Link Measurement.
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4.1 Overview of LAPD Measurement
LAPD Measurement is used to measure the basic signaling process and the traffic volume onthe Abis and Pb interfaces.
Table 4-1 lists the measurement unit of LAPD Measurement.
Table 4-1 Measurement unit of LAPD Measurement
Measurement Unit Section
LAPD Link Measurement 4.2
4.2 LAPD Link Measurement
4.2.1 Overview
The LAPD link is the signaling transfer channel between the BSC and the BTS, and between
the BSC and the PCU.
LAPD Link Measurement is used to measure the number of Q921 protocol frames related tothe LAPD link on the BSC side.
Table 4-2 lists the counters of LAPD Link Measurement.
Table 4-2 Counters of LAPD Link Measurement
Counter Section
L5001: SABME Frames Sent on LAPD Link 4.2.2
L5002: SABME Frames Received on LAPD Link 4.2.3
L5003: REJ Frames Sent on LAPD Link 4.2.4
L5004: REJ Frames Received on LAPD Link 4.2.5
L5005: RNR Frames Sent on LAPD Link 4.2.6L5006: RNR Frames Received on LAPD Link 4.2.7
L5007: I Frames Resent on LAPD Link 4.2.8
L5008: Incorrect I Frames Received on LAPD Link 4.2.9
L5009: I Frames Received on LAPD Link from Application Layer 4.2.10
L5010: I Frames Sent on LAPD Link 4.2.11
L5011: I Frames Received on LAPD Link 4.2.12
L5012: I Frames Discarded on LAPD Link 4.2.13
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Counter Section
L5013: UA Frames Sent on LAPD Link 4.2.14
L5014: UA Frames Received on LAPD Link 4.2.15
L5015: UI Frames Received on LAPD Link 4.2.16
4.2.2 SABME Frames Sent on LAPD Link
Counter
L5001: SABME Frames Sent on LAPD Link.
MeaningThis counter measures the number of SABME frames sent on LAPD links.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 4-1
Figure 4-1 LAPD link measurement
BTS BSC
PCU
Abis interface
Pb interface
This counter is measured when the BSC sends SABME frames to the BTS or the PCU duringinitial link setup or link disruption.
Formula
None.
4.2.3 SABME Frames Received on LAPD Link
Counter
L5002: SABME Frames Received on LAPD Link.
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Meaning
This counter measures the number of SABME frames received on LAPD links.
Trigger PointThe trigger point is on the BSC side, as shown in Figure 4-1.
This counter is measured when the BSC receives SABME frames from the BTS or the PCU
after LAPD link setup.
Formula
None.
4.2.4 REJ Frames Sent on LAPD Link
Counter
L5003: REJ Frames Sent on LAPD Link.
Meaning
This counter measures the number of REJ frames sent on LAPD links.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 4-1.
This counter is measured when the BSC sends REJ frames to the BTS or the PCU after theLAPD link receives incorrect frames.
Formula
None.
4.2.5 REJ Frames Received on LAPD Link
Counter
L5004: REJ Frames Received on LAPD Link
Meaning
This counter measures the number of REJ frames received on LAPD links.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 4-1.
This counter is measured when the BSC receives REJ frames from the BTS or the PCU.
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Formula
None.
4.2.6 RNR Frames Sent on LAPD LinkCounter
L5005: RNR Frames Sent on LAPD Link.
Meaning
This counter measures the number of RNR frames sent on LAPD links.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 4-1.
This counter is measured when the BSC sends RNR frames to the BTS or the PCU after it
receives RR frames when it is busy.
Formula
None.
4.2.7 RNR Frames Received on LAPD Link
Counter
L5006: RNR Frames Received on LAPD Link.
Meaning
This counter measures the number of RNR frames received on LAPD links.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 4-1.
This counter is measured when the BSC receives RNR frames from the BTS or the PCU.
Formula
None.
4.2.8 I Frames Resent on LAPD Link
Counter
L5007: I Frames Resent on LAPD Link.
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Meaning
This counter measures the number of I frames resent on LAPD links.
Trigger PointThe trigger point is on the BSC side, as shown in Figure 4-1.
This counter is measured when the BSC resends I frames to the BTS or the PCU.
Formula
None.
4.2.9 Incorrect I Frames Received on LAPD Link
CounterL5008: Incorrect I Frames Received on LAPD Link.
Meaning
This counter measures the number of incorrect frames received on LAPD links.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 4-1.
This counter is measured when the BSC receives incorrect I frames from the BTS or the PCU.
Formula
None.
4.2.10 I Frames Received on LAPD Link from Application Layer
Counter
L5009: I Frames Received by LAPD Link from Application Layer
Meaning
This counter measures the number of I frames that the LAPD link receives from the
application layer.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 4-1.
This counter is measured when the LAPD link receives I frames from the application layer.
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Formula
None.
4.2.11 I Frames Sent on LAPD LinkCounter
L5010: I Frames Sent on LAPD Link.
Meaning
This counter measures the number of I frames sent on the LAPD link.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 4-1.
This counter is measured when the LAPD link sends I frames to the BTS or the PCU.
Formula
None.
4.2.12 I Frames Received by LAPD Link
Counter
L5011: I Frames Received by LAPD Link.
Meaning
This counter measures the number of I frames received by the LAPD link.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 4-1.
This counter is measured when the LAPD link receives I frames from the BTS or the PCU.
Formula
None.
4.2.13 I Frames Discarded by LAPD Link
Counter
L5012: I Frames Discarded by LAPD Link.
Meaning
This counter measures the number of I frames discarded by the LAPD link.
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Trigger Point
The trigger point is on the BSC side, as shown in Figure 4-1.
This counter is measured when the LAPD link discards the I frames sent from the application
layer if the I frame queue overflows.
Formula
None.
4.2.14 UA Frames Sent on LAPD Link
Counter
L5013: UA Frames Sent on LAPD Link.
Meaning
This counter measures the number of UA frames sent on the LAPD link.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 4-1.
This counter is measured when the LAPD link sends UA frames to the BTS or the PCU after
it receives SABME frames.
Formula None.
4.2.15 UA Frames Received by LAPD Link
Counter
L5014: UA Frames Received by LAPD Link.
Meaning
This counter measures the number of UA frames received by the LAPD link.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 4-1.
This counter is measured when the LAPD link receives UA frames from the BTS or the PCU.
Formula
None.
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4.2.16 UI Frames Received by LAPD Link
Counter
L5015: UI Frames Received by LAPD Link.
Meaning
This counter measures the number of UI frames received by the LAPD link.
Trigger Point
The trigger point is on the BSC side, as shown in Figure 4-1.
This counter is measured when the LAPD link receives UI frames sent from the BTS or thePCU.
Formula
None.
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Performance Counter Reference 5 System Load Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 5-1
5 System Load Measurement
About This Chapter
The following table lists the sections of this chapter.
Section Describes
5.1 Overview of System LoadMeasurement
Describes System Load Measurement and itsmeasurement unit.
5.2 CPU Usage Measurement Describes CPU Usage Measurement and its counters.
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5.1 Overview of System Load Measurement
System Load Measurement refers to the measurement of the system load of the BSC. Thesystem load refers to the CPU usage of the BSC boards and the GBAM.
The CPU usage shows the load situation of the system, but a 100% CPU usage does not meanthat the CPU has reached its limitation and cannot process extra services. The BSC has acertain buffer capability, which can save extra service requests. As long as there is still a
buffer area in the host, the BSC continues to process new services. Therefore, high CPU usage
does not necessarily mean that the BSC is faulty, even if the CPU usage reaches 80%occasionally.
The buffer area of the BSC is limited. If the CPU usage is high for a long time, a transient
exhaustion of the buffer area may occur because there are sharp bursts of service requests.The BSC will abandon new service requests.
Table 5-1 lists the measurement unit of System Load Measurement.
Table 5-1 Measurement unit of System Load Measurement
Measurement Unit Section
CPU Usage Measurement 5.2
5.2 CPU Usage Measurement5.2.1 Overview
CPU Usage Measurement is used to measure the CPU usage of BSC boards and the GBAM.
Table 5-2 lists the counters of CPU Usage Measurement.
Table 5-2 Counters of CPU Usage Measurement
Counter Section
AR9702: Mean CPU Usage 5.2.2
R9703: Maximum CPU Usage 5.2.3
5.2.2 Mean CPU Usage
Counter
AR9702: Mean CPU Usage
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Meaning
This counter measures the mean ratio of the busy time of the CPU in a Granularity Period
(GP). The counter shows the load situation of the BSC.
Trigger Point
None.
Formula
Mean CPU Usage = [Accumulated CPU Usage] / [Number of CPU Usage Measurements]
After a board or the GBAM runs for 30 seconds, the BSC measures the CPU usage every second and
obtains Accumulated CPU Usage in a GP. Number of CPU Usage Measurements refers to the number oftimes the BSC measure the CPU usage.
5.2.3 Maximum CPU Usage
Counter
R9703: Maximum CPU Usage
Meaning
This counter measures the maximum CPU usage in a GP.
Trigger PointThe BSC measures the CPU usage every second in a GP and compares it with the current
value. The measurement is triggered when the BSC detects the maximum CPU usage in a GP.
Formula
None.
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Performance Counter Reference 6 BTSM Management
Issue 03 (2007-05-09) Huawei Technologies Proprietary 6-1
6 BTSM Management
About This Chapter
The following table lists the sections of this chapter.
Section Describes
6.1 Overview of BTSMMeasurement
The measurement units of BTSM Measurement.
6.2 BTS State Measurement per BTS
The function and counters of BTS State Measurement perBTS.
6.3 BTS ConfigurationMeasurement per BM Subrack The function and counters of BTS ConfigurationMeasurement per BM Subrack.
6.4 Cell State Measurement per Cell
The function and counters of Cell State Measurement perCell.
6.5 Cell ConfigurationMeasurement per BM Subrack
The function and counters of Cell ConfigurationMeasurement per BM Subrack.
6.6 TRX State Measurement
per TRX
The function and counters of TRX State Measurement per
TRX.
6.7 TRX Configuration
Measurement per BM Subrack
The function and counters of TRX Configuration
Measurement per BM Subrack.
6.8 CRC Error Measurement per BTS
The function and counters of CRC Error Measurement per BTS.
6.9 CRC Serious Error
Measurement per BTS
The function and counters of CRC Serious Error
Measurement per BTS.
6.10 LAPD Link Measurement
at the BTS
The function and counters of LAPD Link Measurement at
the BTS.
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6.1 Overview of BTSM Measurement
Base Transceiver Station Management (BTSM) measurement is used to measure the state ofthe BTS, cell, and TRX, and link communication state between the BSC and the BTS.
Table 6-1 lists the measurement units of BTSM management.
Table 6-1 Measurement units of BTSM Measurement
Measurement Unit Section
BTS State Measurement per BTS 6.2
BTS Configuration Measurement per BM Subrack 6.3
Cell State Measurement per Cell 6.4
Cell Configuration Measurement per BM Subrack 6.5
TRX State Measurement per TRX 6.6
TRX Configuration Measurement per BM Subrack 6.7
CRC Error Measurement per BTS 6.8
CRC Serious Error Measurement per BTS 6.9
LAPD Link Measurement at the BTS 6.10
BM: Basic Module
BM subrack = GSM Main Processing Subrack (GMPS)/GSM Extended Processing Subrack (GEPS)
6.2 BTS State Measurement per BTS
6.2.1 Overview
BTS State Measurement per BTS is used to measure the BTS reset state, services state, andOML communication state.
Table 6-2 lists the counters of BTS State Measurement per BTS.
Table 6-2 Counters of BTS State Measurement per BTS
Counter Section
R2701: Successful BTS Initializations 6.2.2
R2702: Failed BTS Initializations 6.2.3
L2130: BTS OML Disruption Duration 6.2.4
R273: BTS Out-of-Service Duration 6.2.5
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Counter Section
TR273: BTS Availability 6.2.6
CR273: BTS In-Service Duration 6.2.7
6.2.2 Successful BTS Initializations
Counter
R2701: Successful BTS Initializations.
Meaning
This counter measures the number of successful BTS initializations.
Trigger Point
This counter is measured when BTS initialization succeeds.
Formula
None.
6.2.3 Failed BTS Initializations
Counter
R2702: Failed BTS Initializations.
Meaning
This counter measures the number of failed BTS initializations.
Trigger Point
This counter is measured when:
BTS initialization fails.
BTS initialization fails for the second time.
Flow control is generated during BTS initialization.
Formula
None.
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6.2.4 BTS OML Disruption Duration
Counter
L2130: BTS OML Disruption Duration.
Meaning
When the OML between the BTS and the BSC is faulty, the OML of this BTS is considered
disrupted, and the duration of the disruption is measured.
Trigger Point
This counter is measured when the BTS OML is disrupted.
Formula None.
6.2.5 BTS Out-of-Service Duration
Counter
R273: Duration of Site Out of Service.
Meaning
When the main Broadcast Control Channels (BCCHs) of all the cells under the BTS are faulty,the BTS is considered to be out of service and the duration is measured.
Trigger Point
This counter is measured when the BSC detects faults in the main BCCHs of all the cells
under one BTS.
In some occasions, this counter may have an error of five seconds (the sampling period).
Formula
None.
6.2.6 BTS Availability
Counter
TR273: BTS Availability.
Meaning
This counter measures the BTS availability in a Granularity Period (GP).
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Trigger Point
None.
Formula[BTS Availability] = [BTS In-Service Duration]*{100}/({GP}*{60})
GP unit: minute
6.2.7 BTS In-Service Duration
Counter
CR273: BTS In-Service Duration.
Meaning
This counter measures the duration of the BTS in service in a GP.
Trigger Point
None.
Formula
[BTS In-Service Duration] = {GP}*{60} – [BTS Out-of-Service Duration]
GP unit: minute
6.3 BTS Configuration Measurement per BM Subrack
6.3.1 OverviewBTS Configuration Measurement per BM Subrack is used to measure the activated andavailable BTSs.
Table 6-3 lists the counters of BTS Configuration Measurement per BM Subrack.
Table 6-3 Counters of BTS Configuration Measurement per BM Subrack
Counter Section
R260: Activated BTSs 6.3.2
R261: Available BTSs 6.3.3
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6.3.2 Activated BTSs
Counter
R260: Activated BTSs.
Meaning
This counter measures the number of activated BTSs in data configuration.
Trigger Point
None.
Formula
None.
6.3.3 Available BTSs
Counter
R261: Available BTSs.
Meaning
This counter measures the number of BTSs that are in the ENABLE state.
Trigger Point
The BSC queries the operation state of the BTS regularly and measures the number ofactivated BTSs.
Formula
None.
6.4 Cell State Measurement per Cell
6.4.1 Overview
Cell State Measurement per Cell is used to measure the cell reset state, cell service state, andmutual aid state.
Table 6-4 lists the counters of Cell State Measurement per Cell.
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Table 6-4 Counters of Cell State Measurement per Cell
Counter Section
R3701: Successful Cell Initializations 6.4.2
R3702: Failed Cell Initializations 6.4.3
R3710: Cell BCCH Mutual Aid 6.4.4
R3711: Recoveries after Cell BCCH Mutual Aid 6.4.5
R3720: Cell Baseband Hopping Mutual Aid 6.4.6
R3721: Recoveries after Cell Baseband Hopping Mutual Aid 6.4.7
R373: Cell Out-of-Service Duration 6.4.8
TR373: Cell Availability Duration 6.4.9
CR373: Cell In-Service Duration 6.4.10
6.4.2 Successful Cell Initializations
Counter
R3701: Successful Cell Initializations.
Meaning
This counter measures the number of successful cell initializations.
Trigger Point
This counter is measured when cell initialization succeeds.
Formula
None.
6.4.3 Failed Cell Initializations
Counter
R3702: Failed Cell Initializations.
Meaning
This counter measures the number of failed cell initializations.
Trigger Point
This counter is measured when:
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Cell initialization fails.
Cell initialization fails for the second time.
Flow control is generated during cell initialization.
Formula
None.
6.4.4 Cell BCCH Mutual Aid
Counter
R3710: Cell BCCH Mutual Aid.
Meaning
If the main BCCH of a cell is faulty, to ensure the continuity of services, the BSC allocates a
TCH of another TRX as a new BCCH. This is called BCCH mutual aid. This countermeasures the number of BCCH mutual aid.
Trigger Point
If the main BCCH of a cell is faulty, the BSC allocates a TCH of another TRX as a new
BCCH and accumulates the BCCH mutual aid.
Formula
None.
6.4.5 Recoveries after Cell BCCH Mutual Aid
Counter
R3711: Recoveries after Cell BCCH Mutual Aid.
Meaning
When the BSC detects that the original faulty TRX recovers after the mutual aid, the BSC
adjusts the BCCH back to the original TRX.
Trigger Point
When the BSC detects that the original faulty TRX recovers after the mutual aid, the BSC
adjusts the BCCH back to the original TRX and accumulates the recoveries.
Formula
None.
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6.4.6 Cell Baseband Hopping Mutual Aid
Counter
R3720: Cell Baseband Hopping Mutual Aid.
Meaning
If the TRXs that are involved in baseband hopping are faulty, the baseband hopping function
of this cell is disabled.
Trigger Point
If the TRXs that are involved in baseband hopping are faulty, the BSC disables the baseband
hopping function of this cell and accumulates the baseband hopping mutual aid.
Formula
None.
6.4.7 Recoveries After Cell Baseband Hopping Mutual Aid
Counter
R3721: Recoveries After Cell Baseband Hopping Mutual Aid.
Meaning
If the BSC detects that all the faulty TRXs that are involved in baseband hopping are
recovered, the baseband hopping function is resumed.
Trigger Point
After cell baseband hopping mutual aid, the BSC detects the original faulty TRXs at regular
intervals. If these faulty TRXs are recovered, the baseband hopping function is resumed, and
the recoveries after cell baseband hopping mutual aid are accumulated.
Formula
None.
6.4.8 Cell Out-of-Service Duration
Counter
R373: Cell Out-of-Service Duration.
Meaning
If the main BCCH of a cell is faulty, this cell is considered to be out of service. This counter
measures the Cell Out-of-Service Duration.
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Trigger Point
This counter is measured when the BSC detects that the main BCCH of a cell is faulty.
In some occasions, this counter may have an error of five seconds (the sampling period).
Formula
None.
6.4.9 Cell Availability
Counter
TR373: Cell Availability
Meaning
This counter is used to measure the cell availability in a GP.
Trigger Point
None.
Formula
[Cell Availability] = [Cell In-Service Duration]*{100}/({GP}*{60})
GP unit: minute
6.4.10 Cell In-Service Duration
Counter
CR373: Cell In-Service Duration.
Meaning
This counter measures the duration of a cell in service in a GP.
Trigger Point
None.
Formula
[Cell In-Service Duration] = {GP}*{60} – [Cell Out-of-Service Duration]
GP unit: minute
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6.5 Cell Configuration Measurement per BM Subrack
6.5.1 Overview
Configuration Measurement <BM Subrack> is used to measure the number of activated cellsand available cells.
Table 6-5 lists the counters of Cell Configuration Measurement per BM Subrack.
Table 6-5 Counters of Cell Configuration Measurement per BM Subrack
Counter Section
R360: Activated cells 6.5.2
R361: Available cells 6.5.3
6.5.2 Activated Cells
Counter
R360: Activated Cells.
Meaning
This counter measures the number of activated cells in data configuration.
Trigger Point
None.
Formula
None.
6.5.3 Available Cells
CounterR361: Available Cells.
Meaning
This counter measures the number of cells whose operation state is ENABLE.
Trigger Point
The BSC queries the operation state of cells at regular intervals and measures the number of
activated cells.
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Formula
None.
6.6 TRX State Measurement per TRX
6.6.1 Overview
TRX State Measurement per TRX is used to measure the TRX Out-of-Service Duration.
Table 6-6 lists the counter of TRX State Measurement per TRX.
Table 6-6 Counters of TRX State Measurement per TRX
Counter Section
R473: TRX Out-of-Service Duration 6.6.2
6.6.2 TRX Out-of-Service Duration
Counter
R473: TRX Out-of-Service Duration.
MeaningThis counter measures the out-of-service duration of the TRX.
The TRX is considered out of service when all the channels on the TRX cannot provide
services.
Trigger Point
This counter is measured when the BSC detects that none of the TCHs are available.
In some occasions, this counter may have an error of five seconds (the sampling period).
Formula
None.
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6.7 TRX Configuration Measurement per BM Subrack
6.7.1 Overview
TRX Configuration Measurement per BM Subrack is used to measure the number of activatedand available TRXs, and the TRX availability.
Table 6-7 lists the counters of TRX Configuration Measurement per BM Subrack.
Table 6-7 Counters of TRX Configuration Measurement per BM Subrack
Counter Section
R460: Activated TRXs 6.7.2
R461: Available TRXs 6.7.3
RR461: TRX Availability 6.7.4
6.7.2 Activated TRXs
Counter
R460: Activated TRXs.
Meaning
This counter measures the number of activated TRXs in data configuration.
Trigger Point
None.
Formula
None.
6.7.3 Available TRXs
Counter
R461: Available TRXs.
Meaning
This counter measures the number of TRXs whose operation state is ENABLE.
Trigger Point
This counter is measured when the BSC queries the operation state of TRXs at regular
intervals and measures the number of available TRXs.
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Formula
None.
6.7.4 TRX AvailabilityCounter
RR461: TRX Availability
Meaning
This counter measures the ratio of the number of available TRXs to the number of the
configured TRXs.
Trigger Point
None.
Formula
[TRX Availability] = [Available TRXs]*{100}/[Configured TRXs]
6.8 CRC Error Measurement per BTS
6.8.1 OverviewCRC Error Measurement per BTS is used to measure the duration of CRC error on E1 portson the Abis interface. This measurement unit reflects the communication status of E1 cables
between the BSC and the BTS.
Table 6-8 lists the counter of CRC Error Measurement per BTS.
Table 6-8 Counters of CRC Error Measurement per BTS
Counter Section
Duration of CRC Error on Ports 0 Through 23 6.8.2
6.8.2 Duration of CRC Error on Ports 0 Through 23
Counter
Table 6-9 lists the counters of Duration of CRC Error on Ports 0 Through 23.
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Table 6-9 Counters of Duration of CRC Error on Ports 0 Through 23
Number Counter
1 L2100A: Duration of CRC Error on Port 0
2 L2101A: Duration of CRC Error on Port 1
3 L2102A: Duration of CRC Error on Port 2
4 L2103A: Duration of CRC Error on Port 3
5 L2104A: Duration of CRC Error on Port 4
6 L2105A: Duration of CRC Error on Port 5
7 L2106A: Duration of CRC Error on Port 6
8 L2107A: Duration of CRC Error on Port 7
9 L2108A: Duration of CRC Error on Port 8
10 L2109A: Duration of CRC Error on Port 9
11 L2110A: Duration of CRC Error on Port 10
12 L2111A: Duration of CRC Error on Port 11
13 L2112A: Duration of CRC Error on Port 12
14 L2113A: Duration of CRC Error on Port 13
15 L2114A: Duration of CRC Error on Port 14
16 L2115A: Duration of CRC Error on Port 15
17 L2116A: Duration of CRC Error on Port 16
18 L2117A: Duration of CRC Error on Port 17
19 L2118A: Duration of CRC Error on Port 18
20 L2119A: Duration of CRC Error on Port 19
21 L2120A: Duration of CRC Error on Port 20
22 L2121A: Duration of CRC Error on Port 21
23 L2122A: Duration of CRC Error on Port 22
24 L2123A: Duration of CRC Error on Port 23
Meaning
The BSC and the BTS communicate through E1 cables.
The BTS detects whether there are CRC errors on E1 ports every second. If an error occurs,the number on the counter increases by one, and the total is reported to the BSC every five
minutes. Then the BSC accumulates the reported numbers to get the value in a GP.
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This counter measures the duration of CRC errors on E1 ports. The greater the value is, theworse the transmission quality will be.
Trigger Point
The BTS reports the message containing CRC authentication results to the BSC every five
minutes. Then the BSC measures this counter according to the port number in the message.
Formula
None.
6.9 CRC Serious Error Measurement per BTS
6.9.1 OverviewCRC Serious Error Measurement per BTS is used to measure the duration of CRC seriouserror on E1 ports on the Abis interface. This measurement unit reflects the communication
status of E1 cables between the BSC and the BTS.
Table 6-10 lists the counter of CRC Serious Error Measurement per BTS.
Table 6-10 Counter of CRC Serious Error Measurement per BTS
Counter Section
Duration of Serious CRC Error on Ports 0 Through 23 6.9.2
6.9.2 Duration of Serious CRC Error on Ports 0 Through 23
Counter
Table 6-11 lists the counters of Duration of Serious CRC Error on Ports 0 Through 23.
Table 6-11 Counters of Duration of Serious CRC Error on Ports 0 Through 23
Number Counter
1 L2100B: Duration of Serious CRC Error on Port 0
2 L2101B: Duration of Serious CRC Error on Port 1
3 L2102B: Duration of Serious CRC Error on Port 2
4 L2103B: Duration of Serious CRC Error on Port 3
5 L2104B: Duration of Serious CRC Error on Port 4
6 L2105B: Duration of Serious CRC Error on Port 5
7 L2106B: Duration of Serious CRC Error on Port 6
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Number Counter
8 L2107B: Duration of Serious CRC Error on Port 7
9 L2108B: Duration of Serious CRC Error on Port 8
10 L2109B: Duration of Serious CRC Error on Port 9
11 L2110B: Duration of Serious CRC Error on Port 10
12 L2111B: Duration of Serious CRC Error on Port 11
13 L2112B: Duration of Serious CRC Error on Port 12
14 L2113B: Duration of Serious CRC Error on Port 13
15 L2114B: Duration of Serious CRC Error on Port 14
16 L2115B: Duration of Serious CRC Error on Port 15
17 L2116B: Duration of Serious CRC Error on Port 16
18 L2117B: Duration of Serious CRC Error on Port 17
19 L2118B: Duration of Serious CRC Error on Port 18
20 L2119B: Duration of Serious CRC Error on Port 19
21 L2120B: Duration of Serious CRC Error on Port 20
22 L2121B: Duration of Serious CRC Error on Port 21
23 L2122B: Duration of Serious CRC Error on Port 22
24 L2123B: Duration of Serious CRC Error on Port 23
Meaning
The BSC and the BTS communicate through E1 cables.
The BTS detects whether there are CRC serious errors on E1 ports every second. If a seriouserror occurs, the number on the counter increases by one, and the total is reported to the BSC
every five minutes. Then the BSC accumulates the reported numbers to get the value in a GP.
This counter measures the duration of CRC serious errors on E1 ports. The greater the value is,the worse the transmission quality will be.
Trigger Point
The BTS reports the message containing CRC authentication results to the BSC every fiveminutes. Then the BSC measures this counter according to the port number in the message.
Formula
None.
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6.10 LAPD Link Measurement at the BTS
6.10.1 Overview
LAPD Link Measurement at the BTS is used to measure the number of various frames sent between the BSC and the BTS.
Table 6-12 lists the counters of LAPD Link Measurement at the BTS.
Table 6-12 Counters of LAPD Link Measurement at the BTS
Counter Section
L5101: SABME Frames Sent by the BTS on LAPD Link 6.10.2
L5102: SABME Frames Received by the BTS on LAPD Link 6.10.3
L5103: BTS-Sent Rejects to the LAPD Setup Requests 6.10.4
L5104: BTS-Received Rejects to the LAPD Setup Requests 6.10.5
L5105: RNR Frames Sent by the BTS on LAPD Link 6.10.6
L5106: RNR Frames Received by the BTS on LAPD Link 6.10.7
L5107: I Frames Resent by the BTS on LAPD Link 6.10.8
L5108: NRERR Frames Received by the BTS on LAPD Link 6.10.9
L5109: L3 Data Requests Received by BTS on LAPD Link 6.10.10
L5110: I Frames Sent by the BTS on LAPD Link 6.10.11L5111: I Frames Received by the BTS on LAPD Link 6.10.12
L5112: Queue Overflows of Messages Sent by BTS on LAPD Link 6.10.13
L5113: Erroneous Long Frames Received by BTS Physical Layer on LAPDLink
6.10.14
L5114: Erroneous Octet Received by BTS Physical Layer on LAPD Link 6.10.15
L5115: Discarded Series Received by BTS Physical Layer on LAPD Link 6.10.16
L5116: Number of Times the BTS Receives CRC Errors on LAPD Link 6.10.17
L5117: L1 and L2 Overflows on LAPD Link of the BTS 6.10.18
L5118: Total Frames Received by the BTS Physical Layer on LAPD Link 6.10.19
6.10.2 SABME Frames Sent by the BTS on LAPD Link
Counter
L5101: SABME Frames Sent by the BTS on LAPD Link.
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Meaning
This counter measures the number of SABME frames that the BTS L2 sends on LAPD Link.
The SABME frame is sent to request for link setup.
During the startup and normal operation of the BSC, the BTS does not initiate a link setuprequest or send SABME frames to the BSC. If the LAPD status is converted to multi-frame
(Multi_I) setup, the BTS may send SABME frames to the BSC.
If the physical uplink is disrupted, the measurement result cannot be sent to the BSC and thiscounter does not increase.
Trigger Point
This counter is measured when the BTS L2 sends an SAMBE frame on LAPD Link.
Formula None.
6.10.3 SABME Frames Received by the BTS on LAPD Link
Counter
L5102: SABME Frames Received by the BTS on LAPD Link.
Meaning
This counter measures the number of SABME frames that the BTS L2 receives on LAPDLink.
The SABME frame is sent to request for link setup.
After the BSC starts up, the link status is converted to multi-frame (Multi_I) setup through theframe interaction between the L2 entities of the BSC and the BTS. During this procedure, the
Abis interface board sends the SABME frame to the BTS L2. If the link is abnormal or the
link between the BSC and the BTS is disrupted, the BSC sends the SABME frame to requestfor link setup.
If the physical uplink is disrupted, the BTS does not receive frames from the BSC and this
counter does not increase.
If the physical downlink is disrupted, the measurement result cannot be sent to the BSC andthis counter does not increase.
Trigger Point
This counter is measured when the BTS L2 receives an SAMBE frame on LAPD Link.
Formula
None.
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6.10.4 BTS-Sent Rejects to the LAPD Setup Requests
Counter
L5103: BTS-Sent Rejects to the LAPD Setup Requests.
Meaning
This counter measures the number of REJ frames that the BTS L2 sends on LAPD Link.
The REJ frame is a monitoring frame, which means that the received I frame (information
frame) is rejected. The REJ frame contains the serial number of the expected I Frame.
I frames are numbered in sequence. The BTS L2 has records for received and sent I frames.
Normally, the value of this counter should be 0. If the BTS receives an I frame with anunexpected number, it sends a REJ frame to the BSC, and this counter increases by 1.
If the physical uplink is disrupted, the measurement result cannot be sent to the BSC and this
counter does not increase.
Trigger Point
This counter is measured when the BTS L2 sends a REJ frame on LAPD Link.
Formula
None.
6.10.5 BTS-Received Rejects to the LAPD Setup Requests
Counter
L5104: BTS-Received Rejects to the LAPD Setup Requests.
Meaning
This counter measures the number of REJ frames that the BTS L2 receives on LAPD Link.
The REJ frame is a monitoring frame, which means that the received I frame (informationframe) is rejected. The REJ frame contains the serial number of the expected I frame.
I frames are numbered in sequence. The BTS L2 has records for received and sent I frames.
Normally, the value of this counter should be 0. If the BSC receives an I frame with an
unexpected number, it sends a REJ frame to the BTS, and this counter increases by 1.
If the physical uplink is disrupted, the measurement result cannot be sent to the BSC and thiscounter does not increase.
Trigger Point
This counter is measured when the BTS L2 sends a REJ frame on LAPD Link.
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Formula
None.
6.10.6 RNR Frames Sent by the BTS on LAPD LinkCounter
L5105: RNR Frames Sent by the BTS on LAPD Link.
Meaning
This counter measures the number of RNR frames that the BTS L2 sends on LAPD Link.
The RNR frame is a monitoring frame, which means that the local receiver is busy and is notready to receive the next I frame. The RNR frame contains the serial number of the expected I
frame. The peer end stops sending I frames on receiving the RNR frame.
If the BTS receiver is busy, the BTS sends an RNR frame to the BSC. The BSC stops sendingI frames on receiving the RNR frame.
If the physical uplink is disrupted, the measurement result cannot be sent to the BSC and this
counter does not increase.
Trigger Point
This counter is measured when the BTS L2 sends an RNR frame on LAPD Link.
Formula
None.
6.10.7 RNR Frames Received by the BTS on LAPD Link
Counter
L5106: RNR Frames Received by the BTS on LAPD Link.
Meaning
This counter measures the number of RNR frames that the BTS L2 receives on LAPD Link.
The RNR frame is a monitoring frame, which means that the local receiver is busy and is notready to receive the next I frame. The RNR frame contains the serial number of the expected I
frame. The peer end stops sending I frames on receiving RNR frames.
If the BSC receiver is busy, the BSC sends an RNR frame to the BTS. The BTS stops sendingI frames on receiving the RNR frame.
If the physical uplink is disrupted, the measurement result cannot be sent to the BSC and thiscounter does not increase.
Trigger Point
This counter is measured when the BTS L2 sends an RNR frame on LAPD Link.
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Formula
None.
6.10.8 I Frames Resent by the BTS on LAPD LinkCounter
L5107: I Frames Resent by the BTS on LAPD Link.
Meaning
This counter measures the number of I frames that the BTS L2 resends on LAPD Link.
If the BTS receives a REJ frame from the BSC, it means that an error occurs when the BSCreceives I frames. Then the BTS resends this I frame and all the I frames with numbers bigger
than this number.
If the BTS receives an RNR frame from the BSC, it means that the L2 receiver of the BSC is busy and cannot receive I frames. Then the BTS resends this I frame and all the I frames with
numbers bigger than this number after the L2 receiver of the BSC is free.
This counter increases by 1 when the BTS resends an I frame.
If the physical uplink is disrupted, the measurement result cannot be sent to the BSC and thiscounter does not increase.
Trigger Point
This counter is measured when the BTS L2 resends an I frame on LAPD Link.
Formula
None.
6.10.9 NRERR Frames Received by the BTS on LAPD Link
Counter
L5108: NRERR Frames Received by the BTS on LAPD Link.
Meaning
This counter measures the number of frames that the BTS LAPD Link receives whose
numbers are different from those of the to-be-sent frames.
The RR frames, RNR frames, REJ frames, and I frames sent from the BSC to the BTS containthe numbers of the to-be-sent I frames. The BTS records the number range of the to-be-sent I
frames. If the received I frame number is not within the range, this number is consideredincorrect, and this counter increases by 1.
If the physical uplink is disrupted, the measurement result cannot be sent to the BSC, and this
counter does not increase.
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Trigger Point
This counter is measured when the BTS L2 receives LAPD Link frames whose numbers are
different from those of the to-be-sent frames.
Formula
None.
6.10.10 L3 Data Requests Received by BTS on LAPD Link
Counter
L5109: L3 Data Requests Received by BTS on LAPD Link.
Meaning
This counter measures the number of requests that are sent from LAPD Link L3 to L2 and
contain the to-be-confirmed messages.
The requests sent from L3 consist of the messages that need or need not be confirmed. The
former are transferred in L2 I frames and the latter are transferred in L2 UI frames.
All the L3 messages sent by the BTS except for the MR need be confirmed. If the BTS L2receives one request containing the to-be-confirmed message from L3, this counter increases
by 1.
If the physical uplink is disrupted, the measurement result cannot be sent to the BSC, and this
counter does not increase.
Trigger Point
This counter is measured when the BTS L2 LAPD Link receives the request containing the to- be-confirmed message from L3.
Formula
None.
6.10.11 I Frames Sent by the BTS on LAPD Link
Counter
L5110: I Frames Sent by the BTS on LAPD Link.
Meaning
This counter measures the number of I frames sent by the BTS L2 on LAPD Link.
The requests sent from L3 consist of the messages that need or need not be confirmed. Theformer are transferred in L2 I frames and the latter transferred in L2 UI frames.
All the L3 messages sent by the BTS except for the MR need be confirmed. When the BTS
L2 sends an I frame on LAPD Link, this counter increases by 1.
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If the physical uplink is disrupted, the measurement result cannot be sent to the BSC, and thiscounter does not increase.
Trigger Point
This counter is measured when the BTS L2 sends an I frame on LAPD Link.
Formula
None.
6.10.12 I Frames Received by the BTS on LAPD Link
Counter
L5111: I Frames Received by the BTS on LAPD Link.
Meaning
This counter measures the number of I frames the BTS L2 receives on LAPD Link.
The requests sent from L3 consist of the messages that need or need not be confirmed. Theformer are transferred in L2 I frames and the latter are transferred in L2 UI frames.
All the L3 messages sent by the BSC need be confirmed. If the BTS L2 receives one I frame,
this counter increases by 1.
If the physical uplink is disrupted, the measurement result cannot be sent to the BSC, and thiscounter does not increase.
Trigger Point
This counter is measured when the BTS L2 receives an I frame on LAPD Link.
Formula
None.
6.10.13 Queue Overflows of Messages Sent by BTS on LAPD Link
CounterL5112: Queue Overflows of Messages Sent by BTS on LAPD Link.
Meaning
The requests sent from L3 consist of the messages that need or need not be confirmed. The
former are transferred in L2 I frames and the latter are transferred in L2 UI frames.
When the BTS L2 sends the to-be-confirmed messages through I frames, it puts the I frames
in a message queue and sends them in sequence.
If too many messages are to be sent within a short period of time by L3, the message queue
overflows, messages are lost, and this counter increases by 1.
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If the physical uplink is disrupted, the measurement result cannot be sent to the BSC, and thiscounter does not increase.
Trigger Point
This counter is measured when the message queue of I frames sent by the BTS L2 on LAPD
Link overflows.
Formula
None.
6.10.14 Erroneous Long Frames Received by BTS Physical Layeron LAPD Link
CounterL5113: Erroneous Long Frames Received by BTS Physical Layer on LAPD Link.
Meaning
The L3 messages are sent through L2 to L1. Then L1 sends the messages in the form of
physical frames. If an error occurs when L1 receives a long frame, this frame is discarded, andthis counter increases by 1.
If the physical uplink is disrupted, the measurement result cannot be sent to the BSC, and thiscounter does not increase.
Trigger Point
This counter is measured when the BTS L1 erroneously receives an LAPD Link long frame.
Formula
None.
6.10.15 Erroneous Octet Received by BTS Physical Layer on LAPDLink
Counter
L5114: Erroneous Octet Received by BTS Physical Layer on LAPD Link
Meaning
The L3 messages are sent through L2 to L1. Then L1 sends the messages in the form of
physical frames. If the received frame contains incorrect bytes, this frame is discarded, andthis counter increases by 1.
If the physical uplink is disrupted, the measurement result cannot be sent to the BSC, and this
counter does not increase.
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Trigger Point
This counter is measured when the BTS L1 receives frames containing byte errors.
Formula None.
6.10.16 Discarded Series Received by BTS Physical Layer onLAPD Link
Counter
L5115: Discarded Series Received by BTS Physical Layer on LAPD Link.
MeaningThe L3 messages are sent through L2 to L1. Then L1 sends the messages in the form of
physical frames. If the received frame contains the discarded series, the frame is discarded,and this counter increases by 1.
If the physical uplink is disrupted, the measurement result cannot be sent to the BSC, and this
counter does not increase.
Trigger Point
This counter is measured when the BTS L1 receives frames containing discarded series.
Formula
None.
6.10.17 Number of Times the BTS Receives CRC Errors on LAPDLink
Counter
L5116: Number of Times the BTS Receives CRC Errors on LAPD Link.
Meaning
The L3 messages are sent through L2 to L1. Then L1 sends the messages in the form of
physical frames. If L1 receives a frame containing CRC errors, the frame is discarded, and the
counter increases by 1.
If the physical uplink is disrupted, the measurement result cannot be sent to the BSC, and thiscounter does not increase.
Trigger Point
This counter is measured when the BTS L1 receives a frame containing CRC errors.
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Formula
None.
6.10.18 L1 and L2 Overflows on LAPD Link of the BTSCounter
L5117: L1 and L2 Overflows on LAPD Link of the BTS.
Meaning
The BTS receives physical frames through L1, and then puts them in the queue from L1 to L2.
If large amount of information is received within a short period of time, the message queueoverflows, messages are lost, and this item increases by 1.
If the physical uplink is disrupted, the measurement result cannot be sent to the BSC, and thiscounter does not increase.
Trigger Point
This counter is measured when the message queue from BTS OML L1 to L2 overflows.
Formula
None.
6.10.19 Total Frames Received by the BTS Physical Layer on
LAPD Link
Counter
L5118: Total Frames Received by the BTS Physical Layer on LAPD Link.
Meaning
The BTS receives the physical frames through layer 1 (L1) and then puts the physical frames
in the queue from L1 to L2.
This counter increases by 1 when L1 receives an LAPD Link frame.
If the physical uplink is disrupted, the measurement cannot be sent to the BSC and thiscounter does not increase.
Trigger Point
This counter is measured when BTS L1 receives an LAPD Link frame.
Formula
None.
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7 Resources Measurement
About This Chapter
The following table lists the sections of this chapter.
Section Describes
7.1 Overview of ResourcesMeasurement
The functions and measurement units of ResourcesMeasurement.
7.2 A Interface CircuitMeasurement per DPC
The functions and counters of A Interface CircuitMeasurement per DPC.
7.3 TC Measurement per DPC The functions and counters of TC Measurement per DPC.
7.4 Pb Interface Circuit
Measurement per PCU
The functions and counters of Pb Interface Circuit
Measurement per PCU.
7.5 Ater Interface Circuit
Measurement per BM Subrack
The functions and counters of Ater Interface Circuit
Measurement per BM Subrack.
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7.1 Overview of Resources Measurement
Resources Measurement is used to measure the state of circuits on the A interface, Pbinterface, and Ater interface, and the TC resources.
Table 7-1 lists the measurement units of Resources Measurement.
Table 7-1 Measurement Units of Resources Measurement
Measurement Unit Section
A Interface Circuit Measurement per DPC 7.2
TC Measurement per DPC 7.3
Pb Interface Circuit Measurement per PCU 7.4
Ater Interface Circuit Measurement per BM Subrack 7.5
DPC: Destination Signaling Point Code
BM: Base Module
BM subrack = GSM Main Processing Subrack (GMPS)/GSM Extended Processing Subrack (GEPS)
7.2 A Interface Circuit Measurement per DPC
7.2.1 Overview
A Interface Circuit Measurement per DPC is used to measure the circuits in a faulty, busy, idle,
uninstalled, and maintenance state.
Table 7-2 lists counters of A Interface Circuit Measurement per DPC.
Table 7-2 Counters of A Interface Circuit Measurement per DPC
Counter Section
AL0050: Mean Number of Uninstalled Circuits on the A Interface 0
AL0051: Mean Number of Faulty Circuits on the A Interface 7.2.3
AL0052: Mean Number of Circuits in Maintenance State on the A Interface 7.2.4
AL0053: Mean Number of Blocked Circuits on the A Interface 7.2.5
AL0054: Mean Number of Idle Circuits on the A Interface 7.2.6
AL0055: Mean Number of Busy Circuits on the A Interface 7.2.7
AL0089: Mean Number of Circuits with Uninstalled Peer Circuits on the A
Interface
7.2.8
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7.2.2 Mean Number of Uninstalled Circuits on the A Interface
Counter
AL0050: Mean Number of Uninstalled Circuits on the A Interface.
Meaning
This counter measures the mean number of uninstalled circuits on the A interface.
Trigger Point
The BSC measures the number of uninstalled circuits on the A interface every 10 s.
This counter is calculated by the later-mentioned formula.
Formula
Mean Number of Uninstalled Circuits on the A Interface = [Sampling Number of Uninstalled
Circuits on the A Interface]/({GP}*{6})
GP: Granularity Period. (Unit: minute)
7.2.3 Mean Number of Faulty Circuits on the A Interface
Counter
AL0051: Mean Number of Faulty Circuits on the A Interface.
Meaning
This counter measures the mean number of faulty circuits on the A interface.
Trigger Point
The BSC measures the number of faulty circuits on the A interface every 10 s.
This counter is calculated by the later-mentioned formula.
Formula
Mean Number of Faulty Circuits on the A Interface = [Sampling Number of Faulty Circuits
on the A Interface]/({GP}*{6})
GP: Granularity Period. (Unit: minute)
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7.2.4 Mean Number of Circuits in Maintenance State on the AInterface
CounterAL0052: Mean Number of Circuits in Maintenance State on the A Interface.
Meaning
This counter measures the mean number of circuits in maintenance state on the A interface.
Trigger Point
The BSC measures the number of circuits in the maintenance state on the A interface every 10
s.
This counter is calculated by the later-mentioned formula.
Formula
Mean Number of Circuits in Maintenance State on the A Interface = [Sampling Number of
Circuits in Maintenance State on the A Interface]/({GP}*{6})
GP: Granularity Period. (Unit: minute)
7.2.5 Mean Number of Blocked Circuits on the A Interface
Counter
AL0053: Mean Number of Blocked Circuits on the A Interface.
Meaning
This counter measures the mean number of Blocked Circuits on the A Interface.
Trigger Point
The BSC measures the number of blocked circuits on the A interface every 10 s.
This counter is calculated by the later-mentioned formula.
Formula
Mean Number of Blocked Circuits on the A Interface = [Sampling Number of BlockedCircuits on the A Interface]/({GP}*{6})
GP: Granularity Period. (Unit: minute)
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7.2.6 Mean Number of Idle Circuits on the A Interface
Counter
AL0054: Mean Number of Idle Circuits on the A Interface.
Meaning
This counter measures the mean number of idle circuits on the A interface.
Trigger Point
The BSC measures the number of idle circuits on the A interface every 10 s.
This counter is calculated by the later-mentioned formula.
Formula
Mean Number of Idle Circuits on the A Interface = [Sampling Number of Idle Circuits on the
A Interface]/({GP}*{6})
GP: Granularity Period. (Unit: minute)
7.2.7 Mean Number of Busy Circuits on the A Interface
Counter
AL0055: Mean Number of Busy Circuits on the A Interface.
Meaning
This counter measures the mean number of busy circuits on the A interface.
Trigger Point
The BSC measures the number of busy circuits on the A interface every 10 s.
This counter is calculated by the later-mentioned formula.
Formula
Mean Number of Busy Circuits on the A Interface = [Sampling Number of Busy Circuits on
the A Interface]/({GP}*{6})
GP: Granularity Period. (Unit: minute)
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7.2.8 Mean Number of Circuits with Uninstalled Peer Circuits onthe A Interface
CounterAL0056: Mean Number of Circuits with Uninstalled Peer Circuits on the A Interface.
Meaning
This counter measures the mean number of circuits with uninstalled peer circuits on the A
interface.
Trigger Point
The BSC measures the number of circuits whose peer circuits are uninstalled on the A
interface every 10 s.
This counter is calculated by the later-mentioned formula.
Formula
Mean Number of Circuits with Uninstalled Peer Circuits on the A Interface = [Sampling
Number of A Circuits with Uninstalled Peer Circuits on the A Interface]/({GP}*{6})
GP: Granularity Period. (Unit: minute)
7.3 TC Measurement per DPC
7.3.1 Overview
TC Measurement per DPC is used to measure the faulty, idle, and busy TC Resources.
Table 7-3 lists the counters of TC Measurement per DPC.
Table 7-3 Counters of TC Measurement per DPC
Counter Section
AR0751: Mean Number of Faulty TC Resources 7.3.2
AR0754: Mean Number of Idle TC Resources 7.3.3
AR0755: Mean Number of Busy TC Resources 7.3.4
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7.3.2 Mean Number of Faulty TC Resources
Counter
AR0751: Mean Number of Faulty Transcoders (TC Resources).
Meaning
This counter measures the mean number of faulty TC Resources.
Trigger Point
The BSC measures the number of faulty TC Resources every 10 s.
This counter is calculated by the later-mentioned formula.
Formula
Mean Number of Faulty TC Resources = [Sampling Number of Faulty TC
Resources]/({GP}*{6})
GP: Granularity Period. (Unit: minute)
7.3.3 Mean Number of Idle TC Resources
Counter
AR0754: Mean Number of Idle TC Resources.
Meaning
This counter measures the mean number of idle TC Resources.
Trigger Point
The BSC measures the number of idle TC Resources every 10 s.
This counter is calculated by the later-mentioned formula.
Formula
Mean Number of Idle TC Resources = [Sampling Number of Idle TC Resources]/({GP}*{6})
GP: Granularity Period. (Unit: minute)
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7.3.4 Mean Number of Busy TC Resources
Counter
AR0755: Mean Number of Busy TC Resources.
Meaning
This counter measures the mean number of busy TC Resources.
Trigger Point
The BSC measures the number of busy TC Resources every 10 s.
This counter is calculated by the later-mentioned formula.
Formula
Mean Number of Busy TC Resources = [Sampling Number of Busy TC
Resources]/({GP}*{6})
GP: Granularity Period. (Unit: minute)
7.4 Pb Interface Circuit Measurement per PCU
7.4.1 Overview
Pb Interface Circuit Measurement per PCU is used to measure the faulty, and busy circuits,and the circuits in the maintenance state.
Table 7-4 lists counters of Pb Interface Circuit Measurement per PCU.
Table 7-4 Counters of Pb Interface Circuit Measurement per PCU
Counter Section
AL8351: Mean Number of Faulty Circuits on the Pb Interface 7.4.2
AL8353: Mean Number of Blocked Circuits on the Pb Interface 7.4.3
AL8354: Mean Number of Idle Circuits on the Pb Interface 7.4.4
AL8355: Mean Number of Busy Circuits on the Pb Interface 7.4.5
AL8352: Mean Number of Circuits in Maintenance State on the Pb Interface 7.4.6
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7.4.2 Mean Number of Faulty Circuits on the Pb Interface
Counter
AL8351: Mean Number of Faulty Circuits on the Pb Interface.
Meaning
This counter measures the mean number of faulty circuits on the Pb interface.
Trigger Point
The BSC measures the number of faulty circuits on the Pb interface every 10 s.
This counter is calculated by the later-mentioned formula.
Formula
Mean Number of Faulty Circuits on the Pb Interface = [Sampling Number of Faulty Circuits
on the Pb Interface]/({GP}*{6})
GP: Granularity Period. (Unit: minute)
7.4.3 Mean Number of Blocked Circuits on the Pb Interface
Counter
AL8353: Mean Number of Blocked Circuits on the Pb Interface.
Meaning
This counter measures the mean number of blocked circuits on the Pb interface.
Trigger Point
The BSC measures the number of blocked circuits on the Pb interface every 10 s.
This counter is calculated by the later-mentioned formula.
Formula
Mean Number of Blocked Circuits on the Pb Interface = [Sampling Number of Blocked
Circuits on the Pb Interface]/({GP}*{6})
GP: Granularity Period. (Unit: minute)
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7.4.4 Mean Number of Idle Circuits on the Pb Interface
Counter
AL8354: Mean Number of Idle Circuits on the Pb Interface.
Meaning
This counter measures the mean number of idle circuits on the Pb interface.
Trigger Point
The BSC measures the number of idle circuits on the Pb interface every 10 s.
This counter is calculated by the later-mentioned formula.
Formula
Mean Number of Idle Circuits on the Pb Interface = [Sampling Number of Idle Circuits on the
Pb Interface]/({GP}*{6})
GP: Granularity Period. (Unit: minute)
7.4.5 Mean Number of Busy Circuits on the Pb Interface
Counter
AL8355: Mean Number of Busy Circuits on the Pb Interface.
Meaning
This counter measures the mean number of busy circuits on the Pb interface.
Trigger Point
The BSC measures the number of busy circuits on the Pb interface every 10 s.
This counter is calculated by the later-mentioned formula.
Formula
Mean Number of Busy Circuits on the Pb Interface = [Sampling Number of Busy Circuits on
the Pb Interface]/({GP}*{6})
GP: Granularity Period. (Unit: minute)
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7.4.6 Mean Number of Circuits in Maintenance State on the PbInterface
CounterAL8352: Mean Number of Circuits in Maintenance State on the Pb Interface.
Meaning
This counter measures the mean number of circuits in the maintenance state on the Pb
interface.
Trigger Point
The BSC measures the number of circuits in the maintenance state on the Pb interface every
10 s.
This counter is calculated by the later-mentioned formula.
Formula
Mean Number of Circuits in Maintenance State on the Pb Interface = [Sampling Number of
Circuits in Maintenance State on the Pb Interface]/({GP}*{6})
GP: Granularity Period. (Unit: minute)
7.5 Ater Interface Circuit Measurement per BM Subrack
7.5.1 Overview
Ater Interface Circuit Measurement per BM Subrack is used to measure the faulty, idle, and
busy circuits on the Ater interface.
Table 7-5 lists the counters of Ater Interface Circuit Measurement per BM Subrack.
Table 7-5 Counters of Ater Interface Circuit Measurement per BM Subrack
Counter Section
AL1251: Mean Number of Faulty Circuits on the Ater Interface 7.5.2
AL1254: Mean Number of Idle Circuits on the Ater Interface 7.5.3
AL1255: Mean Number of Busy Circuits on the Ater Interface 7.5.4
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7.5.2 Mean Number of Faulty Circuits on the Ater Interface
Counter
AL1251: Mean Number of Faulty Circuits on the Ater Interface.
Meaning
This counter measures the mean number of faulty circuits on the Ater interface.
Trigger Point
The BSC measures the number of faulty circuits on the Ater interface every 10 s.
This counter is calculated by the later-mentioned formula.
Formula
Mean Number of Faulty Circuits on the Ater Interface = [Sampling Number of Faulty Circuits
on the Ater Interface]/({GP}*{6})
GP: Granularity Period. (Unit: minute)
7.5.3 Mean Number of Idle Circuits on the Ater Interface
Counter
AL1254: Mean Number of Idle Circuits on the Ater Interface.
Meaning
This counter measures the mean number of idle circuits on the Ater interface.
Trigger Point
The BSC measures the number of idle circuits on the Ater interface every 10 s.
This counter is calculated by the later-mentioned formula.
Formula
Mean Number of Idle Circuits on the Ater Interface = [Sampling Number of Idle Circuits on
the Ater Interface]/({GP}*{6})
GP: Granularity Period. (Unit: minute)
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7.5.4 Mean Number of Busy Circuits on the Ater Interface
Counter
AL1255: Mean Number of Busy Circuits on the Ater Interface.
Meaning
This counter measures the mean number of busy circuits on the Ater interface.
Trigger Point
The BSC measures the number of busy circuits on the Ater interface every 10 s.
This counter is calculated by the later-mentioned formula.
Formula
Mean Number of Busy Circuits on the Ater Interface = [Sampling Number of Busy Circuits
on the Ater Interface]/({GP}*{6})
GP: Granularity Period. (Unit: minute)
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Performance Counter Reference 8 MSC Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 8-1
8 MSC Measurement
About This Chapter
The following table lists the sections of this chapter.
Section Describes
8.1 Overview of MSC
Measurement
The functions and measurement unit of MSC
Measurement.
8.2 MSC Measurement per
DPC
The functions and counters of MSC Measurement per
DPC.
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8.1 Overview of MSC Measurement
MSC Measurement is used to measure the number of Number of MSC Resets and the numberof messages that the BSC receives from the MSC.
Table 8-1 lists the measurement unit of MSC Measurement.
Table 8-1 Measurement Unit of MSC Measurement
Measurement Unit Section
MSC Measurement per DPC 8.2
8.2 MSC Measurement per DPC
8.2.1 Overview
MSC Measurement per DPC is used to measure the number of Number of MSC Resets and
the number of messages that the BSC receives from the MSC.
Table 8-2 lists the counters of MSC Measurement per DPC.
Table 8-2 Counters of MSC Measurement per DPC
Counter Section
L0056A: Number of MSC Resets 8.2.2
L0056B: Number of Messages Received from MSC 8.2.3
8.2.2 Number of MSC Resets
Counter
L0056A: Number of MSC Resets.
Meaning
This counter measures the number of Number of MSC Resets.
Trigger Point
This counter increases by 1 when the BSC receives a reset message from the MSC.
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Formula
None.
8.2.3 Number of Messages Received from MSCCounter
L0056B: Number of Messages Received from MSC.
Meaning
This counter measures the number of messages that the BSC receives from the MSC.
Trigger Point
This counter increases by 1 when the BSC receives messages from the MSC.
Formula
None.
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Performance Counter Reference 9 CBC Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 9-1
9 CBC Measurement
About This Chapter
The following table lists the sections of this chapter.
Section Describes
9.1 Overview of CBC Measurement The CBC measurement and its measurement units.
9.2 CBC Measurement per BSC The CBC measurement per BSC and its counters.
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9.1 Overview of CBC Measurement
Cell Broadcast Center (CBC) measurement refers to the measurement of the reception of cell broadcast data and the response of the BSC to the data.
Table 9-1 lists the measurement unit of CBC measurement.
Table 9-1 Measurement unit of CBC measurement
Measurement Unit Section
CBC Measurement per BSC 9.2
9.2 CBC Measurement per BSC
9.2.1 Overview
CBC Measurement is used to measure the reception of cell broadcast data and the response of
the BSC to the data.
Table 9-2 lists the counters of CBC Measurement.
Table 9-2 Counters of CBC Measurement
Counter Section
L0457: WRITE-REPLACE Requests Received by BSC 9.2.2
L0458: KILL Requests Received by BSC 9.2.3
L0459: STATUS-CBCH-QUERY Requests Received by BSC 9.2.4
L0460: STATUS-MESSAGE-QUERY Requests Received by BSC 9.2.5
L0461: SET-DRX Requests Received by BSC 9.2.6
L0462: RESET Requests Received by BSC 9.2.7
L0463: REPORT Responses to WRITE-REPLACE Requests 9.2.8
L0464: REJECT Responses to WRITE-REPLACE Requests 9.2.9
L0465: REPORT Responses to KILL Requests 9.2.10
L0466: REJECT Responses to KILL Requests 9.2.11
L0467: REPORT Responses to STATUS-CBCH-QUERY Requests 9.2.12
L0468: REJECT Responses to STATUS-CBCH-QUERY Requests 9.2.13
L0469: REPORT Responses to STATUS-MESSAGE-QUERY Requests 9.2.14
L0470: REJECT Responses to STATUS-MESSAGE-QUERY Requests 9.2.15
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Counter Section
L0471: REPORT Responses to SET-DRX Requests 9.2.16
L0472: REJECT Responses to SET-DRX Requests 9.2.17
L0473: RESTART-INDICATION Requests Sent from BSC 9.2.18
L0474: REJECT Responses to RESTART-INDICATION Requests 9.2.19
L0475: FAILURE-INDICATION Requests Sent from BSC 9.2.20
L0476: CBCH Loading Indications Received by BSC (Overflow) 9.2.21
L0477: CBCH Loading Indications Received by BSC (Underflow) 9.2.22
L0478: WRITE-REPLACE Requests (WRITE Requests) Received by BSC 9.2.23
L0479: REPORT Responses to WRITE-REPLACE Requests (WRITE
Requests)
9.2.24
L0480: REJECT Responses to WRITE-REPLACE Requests (WRITE Requests) 9.2.25
L0481: WRITE-REPLACE Requests (REPLACE Requests) Received by BSC 9.2.26
L0482: REPORT Responses to WRITE-REPLACE Requests (REPLACE
Requests)
9.2.27
L0483: REJECT Responses to WRITE-REPLACE Requests (REPLACERequests)
9.2.28
AL0484: Mean Capacity of BSC Message Library 9.2.29
L0486: Disruptions of the BSC-CBC Connection 9.2.30
9.2.2 WRITE-REPLACE Requests Received by BSC
Counter
L0457: WRITE-REPLACE Requests Received by BSC
Meaning
This counter measures the number of times the BSC receives a WRITE-REPLACE request on
the BSC-CBC interface.
Trigger Point
This counter increases by one when the BSC receives a WRITE-REPLACE request from the
CBC.
Formula
None.
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9.2.3 KILL Requests Received by BSC
Counter
L0458: KILL Requests Received by BSC
Meaning
This counter is used to measure the number of times the BSC receives a KILL request on the
BSC-CBC interface.
Trigger Point
This counter increases by one when the BSC receives a KILL request from the CBC.
Formula None.
9.2.4 STATUS-CBCH-QUERY Requests Received by BSC
Counter
L0459: STATUS-CBCH-QUERY Requests Received by BSC
Meaning
This counter is used to measure the number of times the BSC receives a STATUS-CBCH-QUERY request on the BSC-CBC interface.
Trigger Point
This counter increases by one when the BSC receives a STATUS-CBCH-QUERY request
from the CBC.
Formula
None.
9.2.5 STATUS-MESSAGE-QUERY Requests Received by BSC
Counter
L0460: STATUS-MESSAGE-QUERY Requests Received by BSC
Meaning
This counter is used to measure the number of times the BSC receives a STATUS-
MESSAGE-QUERY request on the BSC-CBC interface.
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Trigger Point
This counter increases by one when the BSC receives a STATUS-MESSAGE-QUERY request
from the CBC.
Formula
None.
9.2.6 SET-DRX Requests Received by BSC
Counter
L0461: SET-DRX Requests Received by BSC
Meaning
This counter is used to measure the number of times the BSC receives a SET-DRX request on
the BSC-CBC interface.
Trigger Point
This counter increases by one when the BSC receives a SET-DRX request from the CBC.
Formula
None.
9.2.7 RESET Requests Received by BSC
Counter
L0462: RESET Requests Received by BSC
Meaning
This counter is used to measure the number of times the BSC receives a RESET request onthe BSC-CBC interface.
Trigger PointThis counter increases by one when the BSC receives a RESET request from the CBC.
Formula
None.
9.2.8 REPORT Responses to WRITE-REPLACE Requests
Counter
L0463: REPORT Responses to WRITE-REPLACE Requests
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Meaning
This counter is used to measure the number of REPORT responses to WRITE-REPLACE
requests from the BSC to the CBC.
After receiving a WRITE-REPLACE request on the BSC-CBC interface, the BSC sends a REPORTresponse message or a REJECT response message to the CBC.
Trigger Point
This counter increases by one when the BSC sends the CBC a REPORT response to theWRITE-REPLACE request.
Formula
None.
9.2.9 REJECT Responses to WRITE-REPLACE Requests
Counter
L0464: REJECT Responses to WRITE-REPLACE Requests
Meaning
This counter is used to measure the number of REJECT responses to WRITE-REPLACE
requests from the BSC to the CBC.
After receiving a WRITE-REPLACE request on the BSC-CBC interface, the BSC sends a REPORTresponse message or a REJECT response message to the CBC.
Trigger Point
This counter increases by one when the BSC sends a REJECT response message to the CBC.
Formula
None.
9.2.10 REPORT Responses to KILL Requests
Counter
L0465: REPORT Responses to KILL Requests
Meaning
This counter is used to measure the number of REPORT responses to KILL requests from the
BSC to the CBC.
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Performance Counter Reference 9 CBC Measurement
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After receiving a KILL request on the BSC-CBC interface, the BSC sends a REPORT response messageor a REJECT response message to the CBC.
Trigger PointThis counter increases by one when the BSC sends the CBC a REPORT response to the KILL
request.
Formula
None.
9.2.11 REJECT Responses to KILL Requests
CounterL0466: REJECT Responses to KILL Requests
Meaning
This counter is used to measure the number of REJECT responses to KILL requests from BSC
to the CBC.
After receiving a KILL request on the BSC-CBC interface, the BSC sends a REPORT response messageor a REJECT response message to the CBC.
Trigger Point
This counter increases by one when the BSC sends the CBC a REJECT response to the KILL
request.
Formula
None.
9.2.12 REPORT Responses to STATUS-CBCH-QUERY Requests
CounterL0467: REPORT Responses to STATUS-CBCH-QUERY Requests
Meaning
This counter is used to measure the number of REPORT responses to STATUS-CBCH-
QUERY requests from the BSC to the CBC.
After receiving a STATUS-CBCH-QUERY request on the BSC-CBC interface, the BSC sends a
REPORT response message or a REJECT response message to the CBC.
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Trigger Point
This counter increases by one when the BSC sends the CBC a REPORT response to the
STATUS-CBCH-QUERY request.
Formula
None.
9.2.13 REJECT Responses to STATUS-CBCH-QUERY Requests
Counter
L0468: REJECT Responses to STATUS-CBCH-QUERY Requests
Meaning
This counter is used to measure the number of REJECT responses to STATUS-CBCH-
QUERY requests from the BSC to the CBC.
After receiving a STATUS-CBCH-QUERY request on the BSC-CBC interface, the BSC sends aREPORT response message or a REJECT response message to the CBC.
Trigger Point
This counter increases by one when the BSC sends the CBC a REJECT response to the
STATUS-CBCH-QUERY request.
Formula
None.
9.2.14 REPORT Responses to STATUS-MESSAGE-QUERYRequests
Counter
L0469: REPORT Responses to STATUS-MESSAGE-QUERY Requests
Meaning
This counter is used to measure the number of REPORT responses to STATUS-MESSAGE-QUERY requests from the BSC to the CBC.
After receiving a STATUS-MESSAGE-QUERY query on the BSC-CBC interface, the BSC sends a
REPORT response message or a REJECT response message to the CBC.
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Trigger Point
This counter increases by one when the BSC sends the CBC a REPORT response to the
STATUS-MESSAGE-QUERY request.
Formula
None.
9.2.15 REJECT Responses to STATUS-MESSAGE-QUERYRequests
Counter
L0470: REJECT Responses to STATUS-MESSAGE-QUERY Requests
Meaning
This counter is used to measure the number of REJECT responses to STATUS-MESSAGE-QUERY requests from the BSC to the CBC.
After receiving a STATUS-MESSAGE-QUERY query on the BSC-CBC interface, the BSC sends a
REPORT response message or a REJECT response message to the CBC.
Trigger Point
This counter increases by one when the BSC sends a REJECT response to the STATUS-MESSAGE-QUERY request.
Formula
None.
9.2.16 REPORT Responses to SET-DRX Requests
Counter
L0471: REPORT Responses to SET-DRX Requests
Meaning
This counter is used to measure the number of REPORT responses to SET-DRX requests fromthe BSC to the CBC.
After receiving a SET-DRX request on the BSC-CBC interface, the BSC sends a REPORT response
message or a REJECT response message to the CBC.
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9 CBC Measurement
HUAWEI BSC6000 Base Station Controller
Performance Counter Reference
9-10 Huawei Technologies Proprietary Issue 03 (2007-05-09)
Trigger Point
This counter increases by one when the BSC sends the CBC a REPORT response to the SET-
DRX request.
Formula
None.
9.2.17 REJECT Responses to SET-DRX Requests
Counter
L0472: REJECT Responses to SET-DRX Requests
Meaning
This counter is used to measure the number of REJECT responses to SET-DRX requests from
the BSC to the CBC.
After receiving a SET-DRX request on the BSC-CBC interface, the BSC sends a REPORT responsemessage or a REJECT response message to the CBC.
Trigger Point
This counter increases by one when the BSC sends the CBC a REJECT response to SET-DRX
request.
Formula
None.
9.2.18 RESTART-INDICATION Requests Sent from BSC
Counter
L0473: RESTART-INDICATION Requests Sent from BSC
MeaningThis counter is used to measure the number of RESTART-INDICATION requests sent from
BSC to the CBC.
After receiving a RESET message on the BSC-CBC interface, the BSC sends a RESTART-INDICATION requests or a REJECT response message to the CBC.
Trigger Point
This counter increases by one when the BSC sends a RESTART-INDICATION request to the
CBC.
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference 9 CBC Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 9-11
Formula
None.
9.2.19 REJECT Responses to RESTART-INDICATION RequestsCounter
L0474: REJECT Responses to RESTART-INDICATION Requests
Meaning
This counter is used to measure the number of REJECT responses to RESTART-
INDICATION requests from the BSC to the CBC.
After receiving a RESET message on the BSC-CBC interface, the BSC sends a RESTART-INDICATION requests or a REJECT response message to the CBC.
Trigger Point
This counter increases by one when the BSC sends the CBC a REJECT response message to
the RESTART-INDICATION request.
Formula
None.
9.2.20 FAILURE-INDICATION Requests Sent from BSC
Counter
L0475: FAILURE-INDICATION Requests Sent from BSC
Meaning
This counter is used to measure the number of FAILURE-INDICATION requests sent from
the BSC to the CBC.
Trigger PointThis counter increases by one when the BSC sends a FAILURE-INDICATION request to the
CBC.
Formula
None.
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9 CBC Measurement
HUAWEI BSC6000 Base Station Controller
Performance Counter Reference
9-12 Huawei Technologies Proprietary Issue 03 (2007-05-09)
9.2.21 CBCH Loading Indications Received by BSC (Overflow)
Counter
L0476: CBCH Loading Indications Received by BSC (Overflow)
Meaning
This counter is used to measure the number of CBCH Loading Indication (overflow)
messages received by the BSC from the BTS.
Trigger Point
This counter increases by one when the BSC receives a CBCH Loading Indication (overflow)
message from the BTS.
Formula
None.
9.2.22 CBCH Loading Indications Received by BSC (Underflow)
Counter
L0477: CBCH Loading Indications Received by BSC (Underflow)
Meaning
This counter is used to measure the number of CBCH Loading Indication (underflow)
messages received by the BSC from the BTS.
Trigger Point
This counter increases by one when the BSC receives a CBCH Loading Indication (underflow)
message from the BTS.
Formula
None.
9.2.23 WRITE-REPLACE Requests (WRITE Requests) Received byBSC
Counter
L0478: WRITE-REPLACE Requests (WRITE Requests) Received by BSC
Meaning
This counter is used to measure the number of WRITE-REPLACE requests (WRITE requests)
received by the BSC.
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Performance Counter Reference 9 CBC Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 9-13
Trigger Point
This counter increases by one when the BSC receives a WRITE-REPLACE request (WRITE
request).
Formula
None.
9.2.24 REPORT Responses to WRITE-REPLACE Requests(WRITE Requests)
Counter
L0479: REPORT Responses to WRITE-REPLACE Requests (WRITE Requests)
Meaning
This counter is used to measure the number of REPORT responses to WRITE-REPLACErequests (WRITE requests) from the BSC.
Trigger Point
This counter increases by one when the BSC sends a REPORT response message to theWRITE-REPLACE request (WRITE request).
Formula
None.
9.2.25 REJECT Responses to WRITE-REPLACE Requests (WRITERequests)
Counter
L0480: REJECT Responses to WRITE-REPLACE Requests (WRITE Requests)
Meaning
This counter is used to measure the number of REJECT responses to WRITE-REPLACErequests (WRITE requests) from the BSC.
Trigger Point
This counter increases by one when the BSC sends a REJECT response to the WRITE-REPLACE request (WRITE request).
Formula
None.
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Performance Counter Reference
9-14 Huawei Technologies Proprietary Issue 03 (2007-05-09)
9.2.26 WRITE-REPLACE Requests (REPLACE Requests) Receivedby BSC
CounterL0481: WRITE-REPLACE Requests (REPLACE Requests) Received by BSC
Meaning
This counter is used to measure the number of WRITE-REPLACE requests (REPLACE
requests) received by the BSC.
Trigger Point
This counter increases by one when the BSC receives a WRITE-REPLACE request
(REPLACE request).
Formula
None.
9.2.27 REPORT Responses to WRITE-REPLACE Requests(REPLACE Requests)
Counter
L0482: REPORT Responses to WRITE-REPLACE Requests (REPLACE Requests)
Meaning
This counter is used to measure the number of REPORT responses to WRITE-REPLACE
requests (REPLACE requests) from the BSC.
Trigger Point
This counter increases by one when the BSC sends a REPORT response message to the
WRITE-REPLACE request (REPLACE request).
Formula
None.
9.2.28 REJECT Responses to WRITE-REPLACE Requests(REPLACE Requests)
Counter
L0483: REJECT Responses to WRITE-REPLACE Requests (REPLACE Requests)
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Performance Counter Reference 9 CBC Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 9-15
Meaning
This counter is used to measure the number of REJECT responses to WRITE-REPLACE
requests (REPLACE requests) from the BSC.
Trigger Point
This counter increases by one when the BSC sends a REJECT response message to the
WRITE-REPLACE request (REPLACE request).
Formula
None.
9.2.29 Mean Capacity of BSC Message Library
Counter
AL0484: Mean Capacity of BSC Message Library
Meaning
This counter is used to measure the mean number of messages in the BSC message library.
Trigger Point
None.
Formula
Mean number of messages in the BSC message library =
Accumulated number of messages in the BSC message library/Number of samplings ofmessages in the BSC message library
9.2.30 Disruptions of the BSC-CBC Connection
Counter
L0486: Disruptions of the BSC-CBC Connection
Meaning
This counter is used to measure the number of times the connection between the BSC and the
CBC disrupts.
Trigger Point
This counter increases by one when the connection between the BSC and the CBC disrupts.
Formula
None.
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference 10 PCU Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 10-1
10 PCU Measurement
About This Chapter
The following table lists the sections of this chapter.
Section Describes
10.1 Overview of PCUMeasurement
Introduces the functions and measurement units ofPCU Measurement.
10.2 PCU Measurement per BSC Describes the functions and counters of PCUMeasurement per BSC.
10.3 PCU Measurement per PCU Describes the functions and counters of PCUMeasurement per PCU.
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10 PCU Measurement
HUAWEI BSC6000 Base Station Controller
Performance Counter Reference
10-2 Huawei Technologies Proprietary Issue 03 (2007-05-09)
10.1 Overview of PCU Measurement
PCU Measurement is used to measure the number of messages that the BSC receives from thePCU.
Table 10-1 lists the measurement units of PCU Measurement.
Table 10-1 Measurement units of PCU Measurement
Measurement Unit Section
PCU Measurement per BSC 10.2
PCU Measurement per PCU 10.3
10.2 PCU Measurement per BSC
10.2.1 Overview
PCU Measurement per BSC is used to measure the number of messages that the BSC receivesfrom the PCU.
Table 10-2 lists the counters of PCU Measurement per BSC.
Table 10-2 Counters of PCU Measurement per BSC
Counter Section
L0387: Total Messages Received from PCU 10.2.2
10.2.2 Total Messages Received from PCU
Counter
L0387: L0387: Total Messages Received from PCU.
Meaning
This counter measures the number of messages that the BSC receives from all the PCUs.
Trigger Point
This counter increases by 1 when the BSC receives a message from the PCU.
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Performance Counter Reference 10 PCU Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 10-3
Formula
None.
10.3 PCU Measurement per PCU
10.3.1 Overview
PCU Measurement per PCU is used to measure the number of messages that the BSC receives
from one PCU.
Table 10-3 lists the counter of PCU Measurement per PCU.
Table 10-3 Counter of PCU Measurement per PCU
Counter Section
L8387: Messages Received from a PCU 10.3.2
10.3.2 Messages Received from a PCU
Counter
L8387: Messages Received from one PCU.
Meaning
This counter measures the number of messages that the BSC receives from one PCU.
Trigger Point
This counter increases by 1 when the BSC receives a message from a PCU.
Formula
None.
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference 11 Paging Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 11-1
11 Paging Measurement
About This Chapter
The following table lists the sections of this chapter.
Section Describes
11.1 Overview of PagingMeasurement
Introduces the measurement units of PagingMeasurement.
11.2 A Interface PagingMeasurement
Describes the functions and counters of Measurement ofthe Paging on the A Interface per BSC.
11.3 Abis Interface PagingMeasurement Describes the functions and counters of Measurement ofthe Paging on the Abis Interface per Cell.
11.4 Measurement ofDiscarded Paging Messagesdue to Overload per LAPD
Describes the functions and counters of Measurement ofDiscarded Paging Messages due to Overload per LAPD.
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11 Paging Measurement
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Performance Counter Reference
11-2 Huawei Technologies Proprietary Issue 03 (2007-05-09)
11.1 Overview of Paging Measurement
Paging Measurement refers to the measurement of the number of paging messages on the Ainterface and Abis interface.
Table 11-1 lists the measurement units of Paging Measurement.
Table 11-1 Measurement units of Paging Measurement
Measurement Unit Section
A Interface Paging Measurement 11.2
Abis Interface Paging Measurement 11.3
Measurement of Discarded Paging Messages due to Overload per LAPD 11.4
11.2 A Interface Paging Measurement
11.2.1 Overview of A Interface Paging Measurement
Measurement of the Paging on the A Interface per BSC refers to the measurement of thenumber of paging messages from the core network.
The paging messages from the core network have two types, the circuit service (CS) pagings,and the packet service (PS) pagings. The CS pagings are sent from the MSC to the BSC onthe A interface, and the PS pagings are sent from the SGSN to the BSC through the SGSN on
the Gb interface (The pagings can be sent directly to the BSC when the BSC has a built-inPCU). The CS pagings can be sent to the BSC through the SGSN and the PCU when the Gs
interface (interface between the MSC and the SGSN) is available.
Table 11-2 lists the counters of Measurement of the Paging on the A Interface per BSC
Table 11-2 Counters of Measurement of the Paging on the A Interface per BSC
Number Counter
1 A0300: MSC-Initiated Paging Requests for CS Service
2 A0301: SGSN-Initiated Paging Requests for CS Service
3 A031: SGSN-Initiated Paging Requests for PS Service
4 A032: Delivered to BTS for CS Service
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11.2.2 MSC-Initiated Paging Requests for CS Service
Counter
A0300: MSC-Initiated Paging Requests for CS Service
Meaning
This counter measures the number of CS paging requests sent from the MSC to the BSC. The
CS paging requests are sent directly from the MSC to the BSC, and the BSC measures thiscounter after receiving such a paging request.
Trigger Point
This counter is measured when the BSC receives an MSC-initiated paging request, as shown
in Figure 11-1.
Figure 11-1 MSC-initiated paging procedure for CS service
BTS BSCMS MSC
A
PAGING REQ
CHAN REQ
PAGING CMD
CHAN RED
PAGING
Formula
None.
11.2.3 SGSN-Initiated Paging Requests for CS Service
Counter
A0301: SGSN-Initiated Paging Requests for CS Service.
Meaning
This counter measures the number of CS paging requests sent from the SGSN to the BSC.
The CS paging requests are sent from the SGSN to the BSC through the PCU. The BSCmeasures this counter after receiving such a paging request.
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Trigger Point
This counter is measured when the BSC receives the PAGING (CS) message from the PCU or
the SGSN, as shown in Figure 11-2.
Figure 11-2 SGSN-initiated paging procedure for CS service
BTS BSCMS PCU/SGSN
A
PAGING REQ
CHAN REQ
PAGING CMD
CHAN RQD
PAGING(CS)
CHAN REQ
Formula
None.
This counter takes effect only when the Gs interface (interface between the MSC and the SGSN) isavailable.
11.2.4 SGSN-Initiated Paging Requests for PS Service
Counter
A031: SGSN-Initiated Paging Requests for PS Service
Meaning
This counter measures the number of PS paging requests sent from the SGSN to the BSC. The
PS paging requests are sent from the SGSN to the BSC through the PCU. The BSC measures
this counter after receiving such a paging request.
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Performance Counter Reference 11 Paging Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 11-5
Trigger Point
This counter is measured when the BSC receives the PAGING (PS) message from the PCU or
the SGSN, as shown in Figure 11-3.
Figure 11-3 SGSN-initiated paging procedure for PS service
BTS BSCMS SGSN
A
PAGING REQ
CHAN REQ
PAGING CMD
CHAN RQD
PAGING(PS)
CHAN REQ
PCU
PAGING REQ
PAGING REQ
Formula
None.
11.2.5 Delivered to BTS for CS Service
Counter
A032: Delivered to BTS for CS Service
Meaning
This counter measures the number of paging requests delivered from the BSC to the BTS. You
can judge whether the paging messages are lost with the reference of A0300: MSC-InitiatedPaging Requests for CS Service.
Trigger Point
This counter is measured when the BSC delivers a paging request to the BTS, as shown inFigure 11-4.
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Performance Counter Reference
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Figure 11-4 BSC-delivered CS paging procedure
MS BTS BSC MSC
APAGING REQ
CHAN REQ
PAGING CMD
CHAN RQD
PAGING
Formula None.
11.3 Abis Interface Paging Measurement
11.3.1 Overview of Abis Interface Paging Measurement
Measurement of the Paging on the Abis Interface per Cell refers to the measurement of thenumber of PS and CS pagings that the BSC sends to the BTS on the Abis interface.
Table 11-3 lists the counters of Measurement of the Paging on the Abis Interface per Cell.
Table 11-3 Counters of Measurement of the Paging on the Abis Interface per Cell
Number Counter
1 A330: Delivered Paging Messages for CS Service
2 A331: Delivered Paging Messages for PS Service
11.3.2 Delivered Paging Messages for CS Service
Counter
A330: Delivered Paging Messages for CS Service
Meaning
The BSC delivers the PAGING CMD message based on the cell identity after it receives thePAGING message from the MSC or the PCU, and this counter is measured.
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference 11 Paging Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 11-7
Trigger Point
This counter is measured when the BSC delivers a PAGING CMD to the BTS, as shown in
Figure 11-5.
Figure 11-5 CS paging procedure
BTS BSCMS PCU
APAGING REQ
PAGING CMD
PAGING REQ
SGSN MSC
PAGING
PAGING
PAGING REQ
Formula
None.
11.3.3 Delivered Paging Messages for PS Service
Counter
A331: Delivered Paging Messages for PS Service.
Meaning
The SGSN delivers the PAGING REQ message to the PCU. The PCU processes the message
and then sends the PACKET PAGING message to the BSC. The BSC delivers the PSPAGING CMD to related cells based on the cell identity in the PACKET PAGING message
and this counter is measured.
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11 Paging Measurement
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Performance Counter Reference
11-8 Huawei Technologies Proprietary Issue 03 (2007-05-09)
Trigger Point
This counter is measured when the BSC delivers a PS PAGING CMD message to the BTS, as
shown in Figure 11-6.
Figure 11-6 PS paging procedure
PAGING REQ
BTS BSCMS PCU
APAGING REQ
PS PAGING CMD
PAGING
SGSN
Formula
None.
11.4 Measurement of Discarded Paging Messages due toOverload per LAPD
11.4.1 Overview of Measurement of Discarded Paging Messagesdue to Overload per LAPD
Measurement of Discarded Paging Messages due to Overload per LAPD refers to the
measurement of the discarded number of CS and PS pagings on the LAPD link due tooverload of the system.
Table 11-4 lists the counters of Measurement of Discarded Paging Messages due to Overload
per LAPD.
Table 11-4 Counters of Measurement of Discarded Paging Messages due to Overload per LAPD
Number Counter
1 A530: SM Pagings Discarded on LAPD Link
2 A531: CS Pagings Discarded on LAPD Link
3 A532: PS Pagings Discarded on LAPD Link
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Performance Counter Reference 11 Paging Measurement
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11.4.2 SM Pagings Discarded on LAPD Link
Counter
A530: SM Pagings Discarded on LAPD Link
Meaning
This counter measures the number of discarded short message (SM) pagings on the LAPD.
Trigger Point
This counter is measured when an SM paging is discarded on the LAPD link due to overload
of the GEIUB/GOIUB overload or the LAPD link.
Formula None.
11.4.3 CS Pagings Discarded on LAPD Link
Counter
A531: CS Pagings Discarded on LAPD Link
Meaning
This counter measures the number of discarded CS pagings on the LAPD link.
Trigger Point
This counter is measured when a CS paging is discarded on the LAPD link due to overload of
the GEIUB/GOIUB or the LAPD link.
Formula
None.
11.4.4 PS Pagings Discarded on LAPD Link
Counter
A532: PS Pagings Discarded on LAPD Link
Meaning
This counter measures the number of discarded PS pagings on the LAPD link.
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Performance Counter Reference
11-10 Huawei Technologies Proprietary Issue 03 (2007-05-09)
Trigger Point
This counter is measured when a PS paging is discarded on the LAPD link due to overload of
the GEIUB/GOIUB or the LAPD link.
Formula
None.
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference 12 Call Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 12-1
12 Call Measurement
About This Chapter
The following table lists the sections of this chapter.
Section Describes
12.1 Overview of Call Measurement Introduces the call measurement and itsmeasurement units.
12.2 Call Duration Measurement perBSC
Describes Call Duration Measurement per BSC andits counters.
12.3 Flow Control Measurement perCell Describes Flow Control Measurement per Cell andits counters.
12.4 Short Message Measurement per Cell
Describes Short Message Measurement per Celland its counters.
12.5 Call Drop Measurement perCell
Describes Call Drop Measurement per Cell and itscounters.
12.6 Channel Activation
Measurement per Cell
Describes Channel Activation Measurement per
Cell and its counters.
12.7 Channel Seizure Measurement
per TRX
Describes Channel Seizure Measurement per TRX
and its counters.
12.8 Immediate AssignmentMeasurement per Cell
Describes Immediate Assignment Measurement perCell and its counters.
12.9 Assignment Measurement per
Cell
Describes Assignment Measurement per Cell and
its counters.
12.10 Intra-Cell Handover
Measurement per Cell
Describes Intra-Cell Handover Measurement per
Cell and its counters.
12.11 Incoming Internal Inter-Cell
Handover Measurement per Cell
Describes Incoming Internal Inter-Cell Handover
Measurement per Cell and its counters.
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12 Call Measurement
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12-2 Huawei Technologies Proprietary Issue 03 (2007-05-09)
Section Describes
12.12 Outgoing Internal Inter-Cell
Handover Measurement per Cell
Describes Outgoing Internal Inter-Cell Handover
Measurement per Cell and its counters.
12.13 Incoming External Inter-CellHandover Measurement per Cell
Describes Incoming External Inter-Cell HandoverMeasurement per Cell and its counters.
12.14 Outgoing External Inter-CellHandover Measurement per Cell
Describes Outgoing External Inter-Cell HandoverMeasurement per Cell and its counters.
12.15 Incoming Inter-RAT Inter-
Cell Handover Measurement perCell
Describes Incoming Inter-RAT Inter-Cell Handover
Measurement per Cell and its counters.
12.16 Outgoing Inter-RAT Inter-
Cell Handover Measurement perCell
Describes Outgoing Inter-RAT Inter-Cell HandoverMeasurement per Cell and its counters.
12.17 GSM Cell to GSM CellIncoming Handover Measurement
Describes GSM Cell to GSM Cell IncomingHandover Measurement and its counters.
12.18 GSM Cell to GSM CellOutgoing Handover Measurement
Describes GSM Cell to GSM Cell OutgoingHandover Measurement and its counters.
12.19 Measurement of MRs upon
Handover Initiation per Cell
Describes Measurement of MRs upon Handover
Initiation per Cell and its counters.
12.20 KPI Measurement per Cell Describes KPI Measurement per Cell and its
counters.
12.21 Calls Discarded due toOverload per LAPD Describes Calls Discarded due to Overload perLAPD and its counters.
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Performance Counter Reference 12 Call Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 12-3
12.1 Overview of Call Measurement
Call measurement refers to the measurement of the call services in the BSC.Table 12-1 lists the measurement units of call measurement.
Table 12-1 Measurement units of call measurement
Measurement Unit Section
Call Duration Measurement per BSC 12.2
Flow Control Measurement per Cell 12.3
Short Message Measurement per Cell 12.4
Call Drop Measurement per Cell 12.5
Channel Activation Measurement per Cell 12.6
Channel Seizure Measurement per TRX 12.7
Immediate Assignment Measurement per Cell 12.8
Assignment Measurement per Cell 12.9
Intra-Cell Handover Measurement per Cell 12.10
Incoming Internal Inter-Cell Handover Measurement per Cell 12.11
Outgoing Internal Inter-Cell Handover Measurement per Cell 12.12
Incoming External Inter-Cell Handover Measurement per Cell 12.13
Outgoing External Inter-Cell Handover Measurement per Cell 12.14
Incoming Inter-RAT Inter-Cell Handover Measurement per Cell 12.15
Outgoing Inter-RAT Inter-Cell Handover Measurement per Cell 12.16
GSM Cell to GSM Cell Incoming Handover Measurement 12.17
GSM Cell to GSM Cell Outgoing Handover Measurement 12.18
Measurement of MRs upon Handover Initiation per Cell 12.19
KPI Measurement per Cell 12.20
Calls Discarded due to Overload per LAPD 12.21
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12-4 Huawei Technologies Proprietary Issue 03 (2007-05-09)
12.2 Call Duration Measurement per BSC
12.2.1 Overview
Call Duration Measurement per BSC is used to measure the access duration and establishmentduration of all the calls in the BSC.
Table 12-2 lists the counters of Call Duration Measurement per BSC.
Table 12-2 Counters of Call Duration Measurement per BSC
Number Counter
1 AA032: Mean Duration of Call Access
2 AA033: Mean Duration of Call Establishment
12.2.2 Mean Duration of Call Access
Counter
AA032: Mean Duration of Call Access
Meaning
This counter measures the mean duration of call access in a Granularity Period (GP).
Trigger Point
None.
Formula
Mean Duration of Call Access = [Total Duration of Call Access]/[Sampled Duration of Call
Access]
GP unit: 100 milliseconds
12.2.3 Mean Duration of Call Establishment
Counter
AA033: Mean Duration of Call Establishment
Meaning
This counter measures the mean duration of call establishment in a GP.
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Trigger Point
None.
FormulaMean Duration of Call Establishment = [Total Duration of Call Establishment]/[Sampled
Duration of Call Establishment]
GP unit: 100 milliseconds
12.3 Flow Control Measurement per Cell
12.3.1 OverviewFlow Control Measurement per Cell is used to measure the resource utilization of a cell or a
BTS.
Table 12-3 lists the counters of Flow Control Measurement per Cell.
Table 12-3 Counters of Flow Control Measurement per Cell
Number Counter
1 L3188A: MSG DEL IND Messages Sent on Abis Interface
2 L3188B: MSG CCCH LOAD IND (RACH) Messages Sent on Abis Interface
3 L3188C: MSG CCCH LOAD IND (PCH) Messages Sent on Abis Interface
4 L3188D: PACKET CCCH LOAD IND Messages Sent on Abis Interface
5 L3188E: MSG ABIS OVERLOAD (CCCH OVERLOAD) Messages Sent onAbis Interface
6 L3188F: MSG ABIS OVERLOAD (PROCESSOR OVERLOAD) MessagesSent on Abis Interface
7 L3188G: LOAD IND Messages Sent on the A-Interface
8 L3188H: Increases of Flow Control Levels
9 L3188I: Decreases of Flow Control Levels
10 L3188J: Ignored Trigger Events
11 L3188K: Highest Level Delays
12 L3188L: Paging Messages Discarded from the PCH Queue
13 L3188M: Maximum Seizure Ratio of PCH Paging Queue
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12.3.2 MSG DEL IND Messages Sent on Abis Interface
Counter
L3188A: MSG DEL IND Messages Sent on Abis Interface
Meaning
When an IMM ASS CMD message is deleted because of downlink CCCH overload in a cell,
the BTS sends an MSG DEL IND message. This counter measures the number of times theBTS sends the MSG DEL IND messages about a cell in a GP.
Trigger Point
The measurement is triggered when the BSC receives an MSG DEL IND message from the
BTS.
Formula
None.
12.3.3 MSG CCCH LOAD IND (RACH) Messages Sent on AbisInterface
Counter
L3188B: MSG CCCH LOAD IND (RACH) Messages Sent on Abis Interface
Meaning
When the uplink CCCH (RACH) in a cell is overloaded, the BTS sends an MSG CCCH
LOAD IND (RACH) message to the BSC.
Huawei BSS does not support the RACH overload of packet services. The RACH overload caused by
the calls of packet services is also regarded as the RACH overload of circuit services.
Trigger Point
The measurement is triggered when the BSC receives an MSG CCCH LOAD IND (RACH)message from the BTS. The cause carried in this message is uplink CCCH (RACH) overload.
Formula
None.
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12.3.4 MSG CCCH LOAD IND (PCH) Messages Sent on AbisInterface
CounterL3188C: MSG CCCH LOAD IND (PCH) Messages Sent on Abis Interface
Meaning
The BTS saves the downlink CCCH (PCH) messages received from the BSC and the PCU
into different receive buffer queues. When the length of the queue exceeds the specifiedthreshold, the downlink CCCH is overloaded. The BTS can report overload to the BSC andidentify whether the overload is caused by excessive downlink packet services or by excessive
downlink circuit services. If the overload is caused by excessive downlink circuit services, the
BTS sends a CCCH LOAD IND message to the BSC and the BSC forwards it to the PCU.
Trigger Point
The measurement is triggered when the BSC receives from the BTS an MSG CCCH LOAD
IND (PCH) message. The cause carried in this message is downlink CCCH (PCH) overload ofcircuit services.
Formula
None.
12.3.5 PACKET CCCH LOAD IND Messages Sent on Abis
Interface
Counter
L3188D: PACKET CCCH LOAD IND Messages Sent on Abis Interface
Meaning
This counter measures the number of times the BSC receives a PACKET CCCH LOAD IND
message from a cell in a GP, that is, the number of times the BTS receives from the BSC and
PCU a downlink CCCH (PCH) message. When the CCCH of packet services is overloaded,
the BTS sends a PACKET CCCH LOAD IND message to the BSC and the BSC forwards it tothe PCU.
Trigger Point
The measurement is triggered when the BSC receives a PACKET CCCH LOAD IND
message from the BTS.
Formula
None.
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12.3.6 MSG ABIS OVERLOAD (CCCH OVERLOAD) MessagesSent on Abis Interface
CounterL3188E: MSG ABIS OVERLOAD (CCCH OVERLOAD) Messages Sent on Abis Interface
Meaning
This counter measures the number of times the BSC receives an MSG ABIS OVERLOAD
(CCCH OVERLOAD) message from a cell in a GP. When the BTS sends an MSG ABISOVERLOAD (CCCH OVERLOAD) message to the BSC, it also sends the BSC a CCCHLOAD INDICATION message.
TRX overload reports (CCCH overload) = CCCH load reports (RACH overload) + CCCH load reports
(PCH overload) (circuit service and packet service).
In actual situations, this equation may not exist due to bit errors.
Trigger Point
The measurement is triggered when the BSC receives an MSG ABIS OVERLOAD (CCCH
OVERLOAD) message from the BTS.
Formula
None.
12.3.7 MSG ABIS OVERLOAD (PROCESSOR OVERLOAD)Messages Sent on Abis Interface
Counter
L3188F: MSG ABIS OVERLOAD (PROCESSOR OVERLOAD) Messages Sent on AbisInterface
Meaning
This counter measures the number of times the BSC receives an MSG ABIS OVERLOAD(PROCESSOR OVERLOAD) message from a cell in a GP. Processor overload means that the
CPU load of the TRX processor in a cell exceeds the threshold. This counter is not directlyrelated to CCCH overload.
Trigger Point
The measurement is triggered when the BSC receives an MSG ABIS OVERLOAD
(PROCESSOR OVERLOAD) message from the BTS.
Formula
None.
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12.3.8 LOAD IND Messages Sent on the A-Interface
Counter
L3188G: LOAD IND Messages Sent on the A-Interface
Meaning
If a cell has no TCHs available but the cell has external neighbor cells, the BSC sends the
MSC a LOAD IND message to avoid the handover of the call from the external neighbor cellto this cell. The MSC then forwards this message to the BSS where the external neighbor cellis located. Therefore, the BSS will not select congested cells as candidate cells for handovers.
The BSC checks the number of idle TCHs every five seconds.
Trigger Point
The measurement is triggered when the BSC sends a LOAD IND message to the MSC.
Formula
None.
12.3.9 Increases of Flow Control Levels
Counter
L3188H: Increases of Flow Control Levels
Meaning
Cell flow control is performed through double timers. When a trigger event occurs, the eventis ignored if T1 is running. If T1 is not running, the flow control level increases by one unless
the flow control has already reached the highest level. T1 and T2 (T2 > T1) are triggered. IfT2 expires, the flow control level decreases by one. If the flow control level is not zero after
the decrease, T2 is triggered again.
This counter measures the number of times the trigger event occurs when T1 stops and theflow control has not reached the highest level.
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The description of the double timers is as follows:
When the event that can trigger AGCH flow control occurs, the cell flow control timer is triggered if
neither T1 nor T2 is running. The timer length is T1. The status of the timer is changed to T1 running.
If the flow control does not reach the highest level (level 5), the AGCH flow control level increases by one and the number of times the flow control level increases is measured.
If the flow control level has reached the highest level, the Highest Level Delays counter is measured.
If the flow control timer is in T1 running status, the event is ignored and the times the trigger event isignored is measured.
If the flow control timer in T1 running status expires, the timer is triggered again and the timer length is
T2-T1. The status of the flow control timer is changed to T1 stopped and T2 running status.
In T1 stopped and T2 running status, if the event that can trigger AGCH flow control occurs, the cell
flow control timer is triggered again. The timer length is T1. The status of the flow control timer ischanged to T1 running. If the timer expires, the flow control level decreases by one and the number oftimes the flow control level decreases is measured.
If the flow control level is not zero after the decrease, the cell flow control timer is triggered again.
The timer length is T2. The status of the flow control timer remains the same.
If the flow control level becomes zero after the decrease, the status of the flow control timer is
changed to T1 and T2 stopped.
Trigger Point
The BSC detects that all the SDCCHs are busy when sending an IMM ASS REJ message. The
measurement is triggered if T1 stops and the flow control has not reached the highest level.
Formula
None.
12.3.10 Decreases of Flow Control Levels
Counter
L3188I: Decreases of Flow Control Levels
Meaning
Cell flow control is performed through double timers. When a trigger event occurs, the event
is ignored if T1 is running. If T1 is not running, the flow control level increases by one unlessthe flow control has already reached the highest level. T1 and T2 (T2 > T1) are triggered. If
T2 expires, the flow control level decreases by one. If the flow control level is not zero afterthe decrease, T2 is triggered again. The number of the times the flow control level decreasesis the number of the times T2 expires.
This counter measures the number of times the flow control level decreases.
Trigger Point
The measurement is triggered when T2 expires.
Formula
None.
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12.3.11 Ignored Trigger Events
Counter
L3188J: Ignored Trigger Events
Meaning
Cell flow control is performed through double timers. When a trigger event occurs, the event
is ignored if T1 is running. If T1 is not running, the flow control level increases by one unlessthe flow control has already reached the highest level. T1 and T2 (T2 > T1) are triggered. IfT2 expires, the flow control level decreases by one. If the flow control level is not zero after
the decrease, T2 is triggered again.
This counter measures the number of times trigger events occur when T1 is running.
Trigger PointThe measurement is triggered when T1 is running.
Formula
None.
12.3.12 Highest Level Delays
Counter
L3188K: Highest Level Delays
Meaning
Cell flow control is performed through double timers. When a trigger event occurs, the event
is ignored if T1 is running. If T1 is not running, the flow control level increases by one unless
the flow control has already reached the highest level. T1 and T2 (T2 > T1) are triggered. If
T2 expires, the flow control level decreases by one. If the flow control level is not zero afterthe decrease, T2 is triggered again.
This counter measures the number of times the trigger event occurs when T2 is running and
the flow control has reached the highest level.
Trigger Point
The BSC detects that all the SDCCHs are busy when sending an IMM ASS REJ message. The
measurement is triggered if the flow control has reached the highest level.
Formula
None.
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12.3.13 Paging Messages Discarded from the PCH Queue
Counter
L3188L: Paging Messages Discarded from the PCH Queue
Meaning
When the downlink CCCH (PCH) is overloaded, the BTS rerports the BTS STATIS REPORT
message to the BSC and measures the number of CS and PS paging messages discarded bythe PCH in a GP.
The discard causes include queue overflow, queue overflow caused by preferential insertion,
and queuing timer expiration.
When the PCCCH is provided, this counter measures only the number of discarded CS panging
messages.
Trigger Point
This counter is measured when the BSC receives the BTS STATIS REPORT message from
the BTS.
Formula
None.
12.3.14 Maximum Seizure Ratio of PCH Paging QueueCounter
L3188M: Maximum Seizure Ratio of PCH Paging Queue
Meaning
When the downlink CCCH (PCH) is overloaded, the BTS rerports the BTS STATIS REPORT
message to the BSC.
This counter measures the maximum seizure ratio of the PCH paging queue.
Trigger Point
This counter is measured when the BSC receives the BTS STATIS REPORT message from
the BTS.
Formula
None.
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12.4 Short Message Measurement per Cell
12.4.1 Overview
Short Message Measurement per Cell is used to measure the transmission and reception ofshort messages in a cell.
Table 12-4 lists the counters of Short Message Measurement per Cell.
Table 12-4 Counters of Short Message Measurement per Cell
Number Counter
1 A3340A: Uplink Point-to-Point Short Messages on SDCCH
2 A3340B: Downlink Point-to-Point Short Messages on SDCCH
3 A3349A: Uplink Point-to-Point Short Messages on TCH
4 A3349B: Downlink Point-to-Point Short Messages on TCH
5 CA334A: Total Uplink Point-to-Point Short Messages
6 CA334B: Total Downlink Point-to-Point Short Messages
7 CA3340: Point-to-Point Short Messages on SDCCH
8 CA3349: Point-to-Point Short Messages on TCH
12.4.2 Uplink Point-to-Point Short Messages on SDCCH
Counter
A3340A: Uplink Point-to-Point Short Messages on SDCCH
Meaning
This counter measures the number of uplink point-to-point short messages on the SDCCH.
Uplink short messages are sent from the MS to the BSC.
Trigger Point
The measurement is triggered when the BSC receives an uplink point-to-point short message
on the SDCCH.
Formula
None.
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12.4.3 Downlink Point-to-Point Short Messages on SDCCH
Counter
A3340B: Downlink Point-to-Point Short Messages on SDCCH
Meaning
This counter measures the number of downlink point-to-point short messages on the SDCCH.
Downlink short messages are sent from the BSC to the MS.
Trigger Point
The measurement is triggered when the BSC sends a downlink point-to-point short message
on the SDCCH.
Formula
None.
12.4.4 Uplink Point-to-Point Short Messages on TCH
Counter
A3349A: Uplink Point-to-Point Short Messages on TCH
Meaning
This counter measures the number of uplink point-to-point short messages on the TCH.
Trigger Point
The measurement is triggered when the BSC receives an uplink point-to-point short messageon the TCH.
Formula
None.
12.4.5 Downlink Point-to-Point Short Messages on TCH
Counter
A3349B: Downlink Point-to-Point Short Messages on TCH
Meaning
This counter measures the number of downlink point-to-point short messages on the TCH.
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Trigger Point
The measurement is triggered when the BSC sends a downlink point-to-point short message
on the TCH.
Formula
None.
12.4.6 Total Uplink Point-to-Point Short Messages
Counter
CA334A: Total Uplink Point-to-Point Short Messages
Meaning
This counter measures the total number of uplink point-to-point short messages.
Trigger Point
None.
Formula
Total Uplink Point-to-Point Short Messages = [Uplink Point-to-Point Short Messages on
SDCCH] + [Uplink Point-to-Point Short Messages on TCH]
12.4.7 Total Downlink Point-to-Point Short Messages
Counter
CA334B: Total Downlink Point-to-Point Short Messages
Meaning
This counter measures the total number of downlink point-to-point short messages.
Trigger Point
None.
Formula
Downlink Point-to-Point Short Messages = [Downlink Point-to-Point Short Messages on
SDCCH] + [Downlink Point-to-Point Short Messages on TCH]
12.4.8 Point-to-Point Short Messages on SDCCH
Counter
CA3340: Point-to-Point Short Messages on SDCCH
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Meaning
This counter measures the number of point-to-point short messages on the SDCCH.
Trigger Point None.
Formula
Point-to-Point Short Messages on SDCCH = [Uplink Point-to-Point Short Messages on
SDCCH] + [Downlink Point-to-Point Short Messages on SDCCH]
12.4.9 Point-to-Point Short Messages on TCH
Counter
CA3349: Point-to-Point Short Messages on TCH
Meaning
This counter measures the number of point-to-point short messages on the TCH.
Trigger Point
None.
FormulaPoint-to-Point Short Messages on TCH = [Uplink Point-to-Point Short Messages on TCH] +[Downlink Point-to-Point Short Messages on TCH]
12.5 Call Drop Measurement per Cell
12.5.1 Overview
Call Drop Measurement per Cell is used to measure the call drops based on the causes,
channel types, service types, and call status of the call drops.
Table 12-5 lists the counter classification of Call Drop Measurement per Cell.
Table 12-5 Counter classification of Call Drop Measurement per Cell
Counter Classification Section
Call Drop Sampled Measurement per Cell 12.5.2
Call Drop Analyzed Measurement per Cell 12.5.3
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12.5.2 Call Drop Sampled Measurement per Cell
Counter
Table 12-6 lists the counters of Call Drop Sampled Measurement per Cell.
Table 12-6 Counters of Call Drop Sampled Measurement per Cell
Number Counter
1 M3000A: Call Drops due to ERR IND Received on SDCCH in Stable State(T200 Expired)
2 M3000B: Call Drops due to ERR IND Received on SDCCH in Stable State
(Unsolicited DM Response)
3 M3000C: Call Drops due to ERR IND Received on SDCCH in Stable State
(Sequence Error)
4 M3400A: Call Drops due to ERR IND Received on TCHF (Signaling Channel)in Stable State (T200 Expired)
5 M3400B: Call Drops due to ERR IND Received on TCHF (Signaling Channel)in Stable State (Unsolicited DM Response)
6 M3400C: Call Drops due to ERR IND Received on TCHF (Signaling Channel)in Stable State (Sequence Error)
7 M3500A: Call Drops due to ERR IND Received on TCHH (Signaling Channel)in Stable State (T200 Expired)
8 M3500B: Call Drops due to ERR IND Received on TCHH (Signaling Channel)in Stable State (Unsolicited DM Response)
9 M3500C: Call Drops due to ERR IND Received on TCHH (Signaling Channel)in Stable State (Sequence Error)
10 M3100A: Call Drops due to ERR IND Received on TCHF (Traffic Channel) inStable State (T200 Expired)
11 M3100B: Call Drops due to ERR IND Received on TCHF (Traffic Channel) inStable State (Unsolicited DM Response)
12 M3100C: Call Drops due to ERR IND Received on TCHF (Traffic Channel) in
Stable State (Sequence Error)
13 M3200A: Call Drops due to ERR IND Received on TCHH (Traffic Channel) in
Stable State (T200 Expired)
14 M3200B: Call Drops due to ERR IND Received on TCHH (Traffic Channel) inStable State (Unsolicited DM Response)
15 M3200C: Call Drops due to ERR IND Received on TCHH (Traffic Channel) inStable State (Sequence Error)
16 M3001A: Call Drops due to CONN FAIL Received on SDCCH in Stable State
(Radio Link Failure)
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Number Counter
17 M3001B: Call Drops due to CONN FAIL Received on SDCCH in Stable State
(HO Access Failure)
18 M3001C: Call Drops due to CONN FAIL Received on SDCCH in Stable State(OM Intervention)
19 M3001D: Call Drops due to CONN FAIL Received on SDCCH in Stable State(Radio Resource Unavailable)
20 M3001E: Call Drops due to CONN FAIL Received on SDCCH in Stable State
(Other Causes)
21 M3401A: Call Drops due to CONN FAIL Received on TCHF (SignalingChannel) in Stable State (Radio Link Failure)
22 M3401B: Call Drops due to CONN FAIL Received on TCHF (Signaling
Channel) in Stable State (HO Access Failure)
23 M3401C: Call Drops due to CONN FAIL Received on TCHF (SignalingChannel) in Stable State (OM Intervention)
24 M3401D: Call Drops due to CONN FAIL Received on TCHF (Signaling
Channel) in Stable State (Radio Resource Unavailable)
25 M3401E: Call Drops due to CONN FAIL Received on TCHF (SignalingChannel) in Stable State (Other Causes)
26 M3501A: Call Drops due to CONN FAIL Received on TCHH (SignalingChannel) in Stable State (Radio Link Failure)
27 M3501B: Call Drops due to CONN FAIL Received on TCHH (SignalingChannel) in Stable State (HO Access Failure)
28 M3501C: Call Drops due to CONN FAIL Received on TCHH (SignalingChannel) in Stable State (OM Intervention)
29 M3501D: Call Drops due to CONN FAIL Received on TCHH (SignalingChannel) in Stable State (Radio Resource Unavailable)
30 M3501E: Call Drops due to CONN FAIL Received on TCHH (SignalingChannel) in Stable State (Other Causes)
31 M3101A: Call Drops due to CONN FAIL Received on TCHF (Traffic
Channel) in Stable State (Radio Link Failure)
32 M3101B: Call Drops due to CONN FAIL Received on TCHF (TrafficChannel) in Stable State (HO Access Failure)
33 M3101C: Call Drops due to CONN FAIL Received on TCHF (TrafficChannel) in Stable State (OM Intervention)
34 M3101D: Call Drops due to CONN FAIL Received on TCHF (TrafficChannel) in Stable State (Radio Resource Unavailable)
35 M3101E: Call Drops due to CONN FAIL Received on TCHF (TCH) in Stable
State (Other Causes)
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Number Counter
36 M3201A: Call Drops due to CONN FAIL Received on TCHH (TCH) in Stable
State (Radio Link Failure)
37 M3201B: Call Drops due to CONN FAIL Received on TCHH (TCH) in StableState (HO Access Failure)
38 M3201C: Call Drops due to CONN FAIL Received on TCHH (TCH) in StableState (OM Intervention)
39 M3201D: Call Drops due to CONN FAIL Received on TCHH (TCH) in Stable
State (Radio Resource Unavailable)
40 M3201E: Call Drops due to CONN FAIL Received on TCHH (TCH) in StableState (Other Causes)
41 M3002: Call Drops due to REL IND Received on SDCCH
42 M3402: Call Drops due to REL IND Received on TCHF (Signaling Channel)
43 M3102: Call Drops due to REL IND Received on TCHF (TCH)
44 M3502: Call Drops due to REL IND Received on TCHH (Signaling Channel)
45 M3202: Call Drops due to REL IND Received on TCHH (TCH)
46 M302: Call Drops due to No MRs from MS for a Long Time (SDCCH)
47 M342: Call Drops due to No MRs from MS for a Long Time (TCHF)
(Signaling Channel)
48 M312: Call Drops due to No MRs from MS for a Long Time (TCHF) (TCH)
49 M352: Call Drops due to No MRs from MS for a Long Time (TCHH)(Signaling Channel)
50 M322: Call Drops due to No MRs from MS for a Long Time (TCHH) (TCH)
51 M303: Call Drops due to Abis Terrestrial Link Failure (SDCCH)
52 M343: Call Drops due to Abis Terrestrial Link Failure (TCHF) (Signaling
Channel)
53 M313: Call Drops due to Abis Terrestrial Link Failure (TCHF) (TCH)
54 M353: Call Drops due to Abis Terrestrial Link Failure (TCHH) (SignalingChannel)
55 M323: Call Drops due to Abis Terrestrial Link Failure (TCHH) (TCH)
56 M304: Call Drops due to Equipment Failure (SDCCH)
57 M344: Call Drops due to Equipment Failure (TCHF) (Signaling Channel)
58 M314: Call Drops due to Equipment Failure (TCHF) (TCH)
59 M354: Call Drops due to Equipment Failure (TCHH) (Signaling Channel)
60 M324: Call Drops due to Equipment Failure (TCHH) (TCH)
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Number Counter
61 M305: Call Drops due to Forced Handover (SDCCH)
62 M345: Call Drops due to Forced Handover (TCHF) (Signaling Channel)
63 M315: Call Drops due to Forced Handover (TCHF) (TCH)
64 M355: Call Drops due to Forced Handover (TCHH) (Signaling Channel)
65 M325: Call Drops due to Forced Handover (TCHH) (TCH)
66 M306: Call Drops due to Resource Check (SDCCH)
67 M346: Call Drops due to Resource Check (TCHF) (Signaling Channel)
68 M356: Call Drops due to Resource Check (TCHH) (Signaling Channel)
69 M316: Call Drops due to Resource Check (TCHF) (Traffic Channel)
70 M326: Call Drops due to Resource Check (TCHH) (Traffic Channel)
71 M317: Call Drops after Answer (TCHF) (Traffic Channel)
72 M327: Call Drops after Answer (TCHH) (Traffic Channel)
73 M318: Successful Connections (TCHF) (Traffic Channel)
74 M328: Successful Connections (TCHH) (Traffic Channel)
75 M309: Clear Requests Sent on the A-Interface (SDCCH)
76 M349: Clear Requests Sent on the A-Interface (TCHF) (Signaling Channel)
77 M359: Clear Requests Sent on the A-Interface (TCHH) (Signaling Channel)
78 M319A: Clear Requests Sent on the A-Interface in Stable State (TCHF)(Traffic Channel)
79 M319B: Clear Requests Sent on the A-Interface in Handover State (TCHF)
(Traffic Channel)
80 M329A: Clear Requests Sent on the A-Interface in Stable State (TCHH)
(Traffic Channel)
81 M329B: Clear Requests Sent on the A-Interface in Handover State (TCHH)
(Traffic Channel)
Meaning
After an MS occupies a channel, the BTS sends an ERR IND message to the BSC because ofradio link errors. Call drops occur on the Um interface. When receiving the ERR IND
message with a cause value of timer T200 expired (N200+1) times (0x01), unsolicited DMresponse, multiple frame established state (0x05), or sequence error (0x07) in it, the BSC
measures the call drop counters related to ERR IND. The measurement is based on thechannel type (SDCCH, TCHF, or TCHH), service type (signaling or traffic), and cause value.
After an MS occupies a channel, the BTS sends a CONN FAIL IND message to the BSC because of radio link errors or hardware failure. Call drops occur on the Um interface. When
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receiving the CONN FAIL IND message with a cause value of radio link failure (0x01),handover access failure (0x02), OM intervention (0x07), or radio resource not available (0x21)in it, the BSC measures the call drop counters related to CONN FAIL IND on the basis of the
channel type (SDCCH, TCHF, or TCHH), service type (signaling or traffic), and cause value.
In multiframe link setup status, the BTS sends a REL IND message to the BSC after receivingthe DISC frame from an MS. Call drops occur on the Um interface. The BSC measures the
call drop counters related to REL IND on the basis of the channel type (SDCCH, TCHF, orTCHH), service type (signaling or traffic), and cause value.
After an MS occupies an SDCCH, it sends a measurement report to the network every 470 ms.
After an MS occupies a TCH, it sends a measurement report to the network every 480 ms. Ifthe BSC does not receive any measurement report within scheduled time (five minutes by
default), call drops occur on the Um interface. The BSC measures the call drop countersrelated to no measurement reports based on the channel type (SDCCH, TCHF, or TCHH) and
the service type (signaling or traffic).
After an MS occupies a channel, the BTS sends a CONN FAIL IND message to the BSC
because of radio link connection failure. Call drops occur on the Um interface. Whenreceiving the CONN FAIL IND message with a cause equipment failure (0x20) or terrestrialchannel failure (0x22), the BSC measures the call drop counters related to hardware failure on
the basis of the channel type (SDCCH, TCHF, or TCHH), service type (signaling or traffic),and cause value.
After an MS occupies a channel, the BSC measures the call drop counters related to
equipment failure on the basis of the channel type (SDCCH, TCHF, or TCHH) and the servicetype (signaling or traffic) if a release procedure is initiated because of BSC internal errors.
After an MS occupies a channel, a forced handover is initiated but failed. If the release procedure is required, the BSC measures the call drop counters related to the forced handover
based on the channel type (SDCCH, TCHF, or TCHH) and the service type (signaling or
traffic).
After an MS occupies a channel, a release procedure is initiated if the resource check fails.
The BSC measures the call drop counters related to the resource check based on the channeltype (SDCCH, TCHF, or TCHH) and the service type (signaling or traffic).
After a call is established, a conversation begins if the called party answers. If a call drop
occurs for a certain reason, the BSC measures the related call drop counters after aconversation begins based on the channel type (TCHF or TCHH).
After a call is established, the BSC receives the CONN message from the called MS and the
CONN ACK message from the calling MS if the called party answers. The BSC measures thecounters related to successful connections based on the channel type (TCHF or TCHH).
After an MS occupies a channel, the BSC measures the counters related to clear requests senton the A interface on the basis of the channel type (SDCCH, TCHF, or TCHH), service type(signaling or traffic), or status (stable or HO) when the BSC sends a CLR REQ message to the
MSC.
Trigger Point
The measurement of call drops is triggered when a call drop occurs. The measurement of
successful connections is triggered when the called party answers.
Formula
None.
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Performance Counter Reference
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12.5.3 Call Drop Analyzed Measurement per Cell
Counter
Table 12-7 lists the counters of Call Drop Analyzed Measurement per Cell.
Table 12-7 Counters of Call Drop Analyzed Measurement per Cell
Number Counter
1 CM33: Call Drops on TCH
2 CM360: Call Drops on Radio Interface in Stable State (Signaling Channel)
3 CM361: Call Drops on Radio Interface in Handover State (Signaling Channel)
4 CM36: Call Drops on Signaling Channel
5 CM330: Call Drops on Radio Interface in Stable State (TCH)
6 CM331: Call Drops on Radio Interface in Handover State (TCH)
7 CM3600: Call Drops on Signaling Channel in Stable State (Error Indication)
8 CM3601: Call Drops on Signaling Channel in Stable State (ConnectionFailure)
9 CM3602: Call Drops on Signaling Channel in Stable State (Release Indication)
10 CM36C: Call Drops on Radio Interface (Signaling Channel)
11 CM362: Call Drops due to No MRs from MS for a Long Time (Signaling
Channel)
12 CM363: Call Drops due to Abis Terrestrial Link Failure (Signaling Channel)
13 CM364: Call Drops due to Equipment Failure (Signaling Channel)
14 CM365: Call Drops due to Forced Handover (Signaling Channel)
15 CM33C: Call Drops on Radio Interface (TCH)
16 CM3301: Call Drops on TCH in Stable State (Connection Failure)
17 CM3300: Call Drops on TCH in Stable State (Error Indication)
18 CM3302: Call Drops on TCH in Stable State (Release Indication)
19 CM332: Call Drops due to No MRs from MS for a Long Time (TCH)
20 CM333: Call Drops due to Abis Terrestrial Link Failure (TCH)
21 CM334: Call Drops due to Equipment Failure (TCH)
22 CM335: Call Drops due to Forced Handover (TCH)
23 CM30: Call Drops on SDCCH
24 CM30A: Call Drops on Radio Interface (SDCCH)
25 CM396: Call Drops due to Resource Check
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Number Counter
26 CM337: Call Drops after Answer
27 CM338: Successful Connections
28 CM369: Clear Requests Sent on the A Interface (TCH) (Signaling Channel)
29 CM339A: Clear Requests Sent on the A Interface in Stable State (TCH)(Traffic Channel)
30 CM339B: Clear Requests Sent on the A Interface in Handover State (TCH)
(Traffic Channel)
31 CM339: Clear Requests Sent on the A Interface (TCH) (Traffic Channel)
Meaning
None.
Trigger Point
None.
Formula
Call Drops on TCH =
[Call Drops on Radio Interface in Stable State (TCH)] +
[Call Drops on Radio Interface in Handover State (TCH)] +
[Call Drops due to No MRs from MS for a Long Time (TCH)] +
[Call Drops due to Abis Terrestrial Link Failure (TCH)] +
[Call Drops due to Equipment Failure (TCH)] +
[Call Drops due to Forced Handover (TCH)]
Call Drops on Radio Interface in Stable State (Signaling Channel) =
[Call Drops on Signaling Channel in Stable State (Error Indication)] +
[Call Drops on Signaling Channel in Stable State (Connection Failure)] +
[Call Drops on Signaling Channel in Stable State (Release Indication)]
Call Drops on Radio Interface in Handover State (Signaling Channel) =
[Failed Internal Intra-Cell Handovers (Timer Expired) (SDCCH)] +
[Failed Internal Intra-Cell Handovers (Timer Expired) (TCHF) (Signaling Channel)] +
[Failed Internal Intra-Cell Handovers (Timer Expired) (TCHH) (Signaling Channel)] +
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[Failed Outgoing Internal Inter-Cell Handovers (Timer Expired) (SDCCH) (ExcludingDirected Retry)] +
[Failed Outgoing Internal Inter-Cell Handovers (Timer Expired) (Directed Retry)] +
[Failed Outgoing Internal Inter-Cell Handovers (Timer Expired) (TCHF) (Signaling Channel)]+
[Failed Outgoing Internal Inter-Cell Handovers (Timer Expired) (TCHH) (Signaling Channel)]+
[Failed Outgoing External Inter-Cell Handovers (T8 Expired) (SDCCH) (Excluding Directed
Retry)] +
[Failed Outgoing External Inter-Cell Handovers (T8 Expired) (Directed Retry)] +
[Failed Outgoing External Inter-Cell Handovers (T8 Expired) (TCHF) (Signaling Channel)] +
[Failed Outgoing External Inter-Cell Handovers (T8 Expired) (TCHH) (Signaling Channel)] +
[Failed Incoming External Inter-Cell Handovers (Timer Expired) (SDCCH)] +
[Failed Incoming External Inter-Cell Handovers (Timer Expired) (TCH) (Signaling Channel)]
Call Drops on Signaling Channel =
[Call Drops on Radio Interface in Stable State (Signaling Channel)] +
[Call Drops on Radio Interface in Handover State (Signaling Channel)] +
[Call Drops due to No MRs from MS for a Long Time (Signaling Channel)] +
[Call Drops due to Abis Terrestrial Link Failure (Signaling Channel)] +[Call Drops due to Equipment Failure (Signaling Channel)] +
[Call Drops due to Forced Handover (Signaling Channel)]
Call Drops on Radio Interface in Stable State (TCH) =
[Call Drops on TCH in Stable State (Error Indication)] +
[Call Drops on TCH in Stable State (Connection Failure)] +
[Call Drops on TCH in Stable State (Release Indication)]
Call Drops on Radio Interface in Handover State (TCH) =
[Failed Internal Intra-Cell Handovers (Timer Expired) (TCHF) (Traffic Channel)] +
[Failed Internal Intra-Cell Handovers (Timer Expired) (TCHH) (Traffic Channel)] +
[Failed Outgoing Internal Inter-Cell Handovers (Timer Expired) (TCHF) (Traffic Channel)] +
[Failed Outgoing Internal Inter-Cell Handovers (Timer Expired) (TCHH) (Traffic Channel)] +
[Failed Outgoing External Inter-Cell Handovers (T8 Expired) (TCHF) (Traffic Channel)] +
[Failed Outgoing External Inter-Cell Handovers (T8 Expired) (TCHH) (Traffic Channel)] +
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[Failed Incoming External Inter-Cell Handovers (Timer Expired) (TCH) (Traffic Channel)]
Call Drops on Signaling Channel in Stable State (Error Indication) =
[Call Drops due to ERR IND Received on SDCCH in Stable State (T200 Expired)] +
[Call Drops due to ERR IND Received on SDCCH in Stable State (Unsolicited DMResponse)] +
[Call Drops due to ERR IND Received on SDCCH in Stable State (Sequence Error)] +
[Call Drops due to ERR IND Received on TCHF in Stable State (T200 Expired) (Signaling
Channel)] +
[Call Drops due to ERR IND Received on TCHF (Signaling Channel) in Stable State(Unsolicited DM Response)] +
[Call Drops due to ERR IND Received on TCHF (Signaling Channel) in Stable State
(Sequence Error)] +
[Call Drops due to ERR IND Received on TCHH (Signaling Channel) in Stable State (T200
Expired)] +
[Call Drops due to ERR IND Received on TCHH (Signaling Channel) in Stable State(Unsolicited DM Response)] +
[Call Drops due to ERR IND Received on TCHH (Signaling Channel) in Stable State
(Sequence Error)]
Call Drops on Signaling Channel in Stable State (Connection Failure) =
[Call Drops due to CONN FAIL Received on SDCCH in Stable State (Radio Link Failure)] +
[Call Drops due to CONN FAIL Received on SDCCH in Stable State (HO Access Failure)] +
[Call Drops due to CONN FAIL Received on SDCCH in Stable State (OM Intervention)] +
[Call Drops due to CONN FAIL Received on SDCCH in Stable State (Radio ResourceUnavailable)] +
[Call Drops due to CONN FAIL Received on SDCCH in Stable State (Other Causes)] +
[Call Drops due to CONN FAIL Received on TCHF (Signaling Channel) in Stable State(Radio Link Failure)] +
[Call Drops due to CONN FAIL Received on TCHF (Signaling Channel) in Stable State (HOAccess Failure)] +
[Call Drops due to CONN FAIL Received on TCHF (Signaling Channel) in Stable State (OM
Intervention)] +
[Call Drops due to CONN FAIL Received on TCHF (Signaling Channel) in Stable State
(Radio Resource Unavailable) in Stable State (OM Intervention)] +
[Call Drops due to CONN FAIL Received on TCHF (Signaling Channel) in Stable State
(Other Causes)] +
[Call Drops due to CONN FAIL Received on TCHH (Signaling Channel) in Stable State
(Radio Link Failure)] +
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Performance Counter Reference
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[Call Drops due to CONN FAIL Received on TCHH (Signaling Channel) in Stable State (HOAccess Failure)] +
[Call Drops due to CONN FAIL Received on TCHH (Signaling Channel) in Stable State (OM
Intervention)] +
[Call Drops due to CONN FAIL Received on TCHH (Signaling Channel) in Stable State
(Radio Resource Unavailable)] +
[Call Drops due to CONN FAIL Received on TCHH (Signaling Channel) in Stable State(Other Causes)]
Call Drops on Signaling Channel in Stable State (Release Indication) =
[Call Drops due to REL IND Received on SDCCH] +
[Call Drops due to REL IND Received on TCHF (Signaling Channel)] +
[Call Drops due to REL IND Received on TCHH (Signaling Channel)]
Call Drops on Radio Interface (Signaling Channel) =
[Call Drops on Radio Interface in Stable State (Signaling Channel)] +
[Call Drops on Radio Interface in Handover State (Signaling Channel)]
Call Drops due to No MRs from MS for a Long Time (Signaling Channel) =
[Call Drops due to No MRs from MS for a Long Time (SDCCH)] +[Call Drops due to No MRs from MS for a Long Time (TCHF) (Signaling Channel)] +
[Call Drops due to No MRs from MS for a Long Time (TCHH) (Signaling Channel)]
Call Drops due to Abis Terrestrial Link Failure (Signaling Channel) =
[Call Drops due to Abis Terrestrial Link Failure (SDCCH)] +
[Call Drops due to Abis Terrestrial Link Failure (TCHF) (Signaling Channel)] +
[Call Drops due to Abis Terrestrial Link Failure (TCHH) (Signaling Channel)]
Call Drops due to Equipment Failure (Signaling Channel) =
[Call Drops due to Equipment Failure (SDCCH)] +
[Call Drops due to Equipment Failure (TCHF) (Signaling Channel)] +
[Call Drops due to Equipment Failure (TCHH) (Signaling Channel)]
Call Drops due to Forced Handover (Signaling Channel) =
[Call Drops due to Forced Handover (SDCCH)] +
[Call Drops due to Forced Handover (TCHF) (Signaling Channel)] +
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[Call Drops due to Forced Handover (TCHH) (Signaling Channel)]
Call Drops on Radio Interface (TCH) =
[Call Drops on Radio Interface in Stable State (TCH)] +
[Call Drops on Radio Interface in Handover State (TCH)] +
Call Drops on TCH in Stable State (Connection Failure) =
[Call Drops due to CONN FAIL Received on TCHF (TCH) in Stable State (Radio Link
Failure)] +
[Call Drops due to CONN FAIL Received on TCHF (TCH) in Stable State (HO Access
Failure)] +
[Call Drops due to CONN FAIL Received on TCHF (TCH) in Stable State (OM Intervention)]+
[Call Drops due to CONN FAIL Received on TCHF (TCH) in Stable State (Radio ResourceUnavailable)] +
[Call Drops due to CONN FAIL Received on TCHF (TCH) in Stable State (Other Causes)] +
[Call Drops due to CONN FAIL Received on TCHH (TCH) in Stable State (Radio Link
Failure)] +
[Call Drops due to CONN FAIL Received on TCHH (TCH) in Stable State (HO AccessFailure)] +
[Call Drops due to CONN FAIL Received on TCHH (TCH) in Stable State (OM Intervention)]+
[Call Drops due to CONN FAIL Received on TCHH (TCH) in Stable State (Radio Resource
Unavailable)] +
[Call Drops due to CONN FAIL Received on TCHH (TCH) in Stable State (Other Causes)]
Call Drops on TCH in Stable State (Error Indication) =
[Call Drops due to ERR IND Received on TCHF (TCH) in Stable State (T200 Expired)] +
[Call Drops due to ERR IND Received on TCHF (TCH) in Stable State (Unsolicited DMResponse)] +
[Call Drops due to ERR IND Received on TCHF (TCH) in Stable State (Sequence Error)] +
[Call Drops due to ERR IND Received on TCHH (TCH) in Stable State (T200 Expired)] +
[Call Drops due to ERR IND Received on TCHH (TCH) in Stable State (Unsolicited DM
Response)] +
[Call Drops due to ERR IND Received on TCHH (TCH) in Stable State (Sequence Error)]
Call Drops on TCH in Stable State (Release Indication) =
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[Call Drops due to REL IND Received on TCHF (TCH)] +
[Call Drops due to REL IND Received on TCHH (TCH)]
Call Drops due to No MRs from MS for a Long Time (TCH) =
[Call Drops due to No MRs from MS for a Long Time (TCHF) (TCH)] +
[Call Drops due to No MRs from MS for a Long Time (TCHH) (TCH)]
Call Drops due to Abis Terrestrial Link Failure (TCH) =
[Call Drops due to Abis Terrestrial Link Failure (TCHF) (TCH)] +
[Call Drops due to Abis Terrestrial Link Failure (TCHH) (TCH)]
Call Drops due to Equipment Failure (TCH) =
[Call Drops due to Equipment Failure (TCHF) (TCH)] +
[Call Drops due to Equipment Failure (TCHH) (TCH)]
Call Drops due to Forced Handover (TCH) =
[Call Drops due to Forced Handover (TCHF) (TCH)] +
[Call Drops due to Forced Handover (TCHH) (TCH)]
Call Drops on SDCCH =
[Call Drops on Radio Interface (SDCCH)] +
[Call Drops due to No MRs from MS for a Long Time (SDCCH)] +
[Call Drops due to Abis Terrestrial Link Failure (SDCCH)] +
[Call Drops due to Equipment Failure (SDCCH)] +
[Call Drops due to Forced Handover (SDCCH)]
Call Drops on Radio Interface (SDCCH) =
[Call Drops due to ERR IND Received on SDCCH in Stable State (T200 Expired)] +
[Call Drops due to ERR IND Received on SDCCH in Stable State (Unsolicited DM
Response)] +
[Call Drops due to ERR IND Received on SDCCH in Stable State (Sequence Error)] +
[Call Drops due to CONN FAIL Received on SDCCH in Stable State (Radio Link Failure)] +
[Call Drops due to CONN FAIL Received on SDCCH in Stable State (HO Access Failure)] +
[Call Drops due to CONN FAIL Received on SDCCH in Stable State (OM Intervention)] +
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[Call Drops due to CONN FAIL Received on SDCCH in Stable State (Radio ResourceUnavailable)] +
[Call Drops due to CONN FAIL Received on SDCCH in Stable State (Other Causes)] +
[Call Drops due to REL IND Received on SDCCH] +[Failed Internal Intra-Cell Handovers (Timer Expired) (SDCCH)] +
[Failed Outgoing Internal Inter-Cell Handovers (Timer Expired) (SDCCH) (Excluding
Directed Retry)] +
[Failed Outgoing Internal Inter-Cell Handovers (Timer Expired) (Directed Retry)] +
[Failed Outgoing External Inter-Cell Handovers (T8 Expired) (SDCCH) (Excluding Directed
Retry)] +
[Failed Outgoing External Inter-Cell Handovers (T8 Expired) (Directed Retry)] +
[Failed Incoming External Inter-Cell Handovers (Timer Expired) (SDCCH)]
Call Drops due to Resource Check =
[Call Drops due to Resource Check (SDCCH)] +
[Call Drops due to Resource Check (TCHF) (Signaling Channel)] +
[Call Drops due to Resource Check (TCHH) (Signaling Channel)] +
[Call Drops due to Resource Check (TCHF) (TCH)] +
[Call Drops due to Resource Check (TCHH) (TCH)]
Call Drops after Answer =
[Call Drops after Answer (TCHF) (TCH)] +
[Call Drops after Answer (TCHH) (TCH)]
Successful Connections =
[Successful Connections (TCHF) (TCH)] +
[Successful Connections (TCHH) (TCH)]
Clear Requests Sent on the A Interface (TCH) (Signaling Channel) =
[Clear Requests Sent on the A-Interface (TCHF) (Signaling Channel)] +
[Clear Requests Sent on the A-Interface (TCHH) (Signaling Channel)]
Clear Requests Sent on the A Interface in Stable State (TCH) (Traffic Channel) =
[Clear Requests Sent on the A-Interface in Stable State (TCHF) (TCH)] +
[Clear Requests Sent on the A-Interface in Stable State (TCHH) (TCH)]
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Clear Requests Sent on the A Interface in Handover State (TCH) (Traffic Channel) =
[Clear Requests Sent on the A-Interface in Handover State (TCHF) (TCH)] +
[Clear Requests Sent on the A-Interface in Handover State (TCHH) (TCH)]
Clear Requests Sent on the A Interface (TCH) (Traffic Channel) =
[Clear Requests Sent on the A-Interface in Stable State (TCH) (Traffic Channel)] +
[Clear Requests Sent on the A Interface in Handover State (TCH) (Traffic Channel)]
12.6 Channel Activation Measurement per Cell
12.6.1 OverviewChannel Activation Measurement per Cell is used to measure the activation of all types ofchannels in a cell.
Table 12-8 lists the counter classification of Channel Activation Measurement per Cell.
Table 12-8 Counter classification of Channel Activation Measurement per Cell
Counter Classification Section
SDCCH Connection Measurement per Cell 12.6.2
TCH Connection Measurement per Cell 12.6.3
Channel Activation Analyzed Measurement per Cell 12.6.4
12.6.2 SDCCH Connection Measurement per Cell
Counter
Table 12-9 lists the counters of SDCCH Connection Measurement per Cell.
Table 12-9 Counters of SDCCH Connection Measurement per Cell
Number Counter
1 R3300A: Channel Activation Attempts in Immediate Assignment Procedure(SDCCH)
2 R3300B: CHAN ACTIV NACK Messages Sent by BTS in ImmediateAssignment Procedure (SDCCH)
3 R3300C: Channel Activation Timeouts in Immediate Assignment Procedure
(SDCCH)
4 R3330A: Channel Activation Attempts in Internal Intra-Cell Handover
Procedure (SDCCH)
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Number Counter
5 R3330B: CHAN ACTIV NACK Messages Sent by BTS in Internal Intra-Cell
Handover Procedure (SDCCH)
6 R3330C: Channel Activation Timeouts in Internal Intra-Cell HandoverProcedure (SDCCH)
7 R3340A: Channel Activation Attempts in Incoming Internal Inter-CellHandover Procedure (SDCCH)
8 R3340B: CHAN ACTIV NACK Messages Sent by BTS in Incoming Internal
Inter-Cell Handover Procedure (SDCCH)
9 R3340C: Channel Activation Timeouts in Incoming Internal Inter-CellHandover Procedure (SDCCH)
10 R3350A: Channel Activation Attempts in Incoming External Inter-Cell
Handover Procedure (SDCCH)
11 R3350B: CHAN ACTIV NACK Messages Sent by BTS in Incoming ExternalInter-Cell Handover Procedure (SDCCH)
12 R3350C: Channel Activation Timeouts in Incoming External Inter-Cell
Handover Procedure (SDCCH)
Meaning
After receiving a CHAN RQD message from the BTS, the BSC measures R3300A: Channel
Activation Attempts in Immediate Assignment Procedure (SDCCH) in the cell where theSDCCH is located if the BSC assigns an SDCCH and sends a CHAN ACTIV message to theBTS.
In the SDCCH immediate assignment procedure, the BSC sends a CHAN ACTIV message to
the BTS. If the BTS returns a CHAN ACTIV NACK message, the SDCCH activation fails.The BSC measures R3300B: CHAN ACTIV NACK Messages Sent by BTS in ImmediateAssignment Procedure (SDCCH) in the cell where the SDCCH is located.
In the SDCCH immediate assignment procedure, the BSC sends a CHAN ACTIV message tothe BTS and triggers an internal timer. If no CHAN ACTIV ACK message is received withinscheduled time (five seconds by default), the BSC measures R3300C: Channel Activation
Timeouts in Immediate Assignment Procedure (SDCCH) in the cell where the SDCCH is
located.
When the MS is in stable state on the SDCCH, the BSC sends a CHAN ACTIV message to
the BTS where the target cell is located if the BSC decides to initiate a handover based on
measurement reports and if the target cell is the current cell. The BSC measures R3330A:Channel Activation Attempts in Internal Intra-Cell Handover Procedure (SDCCH) in the cellwhere the target SDCCH is located.
In the intra-cell SDCCH handover procedure, the BSC sends a CHAN ACTIV message to theBTS. If the BTS returns a CHAN ACTIV NACK message, the SDCCH handover fails. The
BSC measures R3330B: CHAN ACTIV NACK Messages Sent by BTS in Internal Intra-CellHandover Procedure (SDCCH) in the cell where the target SDCCH is located.
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In the intra-cell SDCCH handover procedure, the BSC sends a CHAN ACTIV message to theBTS and triggers an internal timer. If no CHAN ACTIV ACK message is received withinscheduled time (five seconds by default), the BSC measures R3330C: Channel Activation
Timeouts in Internal Intra-Cell Handover Procedure (SDCCH) in the cell where the targetSDCCH is located.
When the MS is in stable state on the SDCCH, the BSC sends a CHAN ACTIV message to
the BTS where the target cell is located if the BSC decides to initiate a handover based onmeasurement reports and if the target cell and the current cell are two cells in one BSC. The
BSC measures R3340A: Channel Activation Attempts in Incoming Internal Inter-CellHandover Procedure (SDCCH) in the cell where the target SDCCH is located.
In the incoming internal inter-cell SDCCH handover procedure, the BSC sends a CHAN
ACTIV message to the BTS. If the BTS returns a CHAN ACTIV NACK message, theSDCCH handover fails. The BSC measures R3340B: CHAN ACTIV NACK Messages Sent
by BTS in Incoming Internal Inter-Cell Handover Procedure (SDCCH) in the cell where thetarget SDCCH is located.
In the incoming internal inter-cell SDCCH handover procedure, the BSC sends a CHANACTIV message to the BTS and triggers an internal timer. If no CHAN ACTIV ACK messageis received within scheduled time (five seconds by default), the BSC measures R3340C:
Channel Activation Timeouts in Incoming Internal Inter-Cell Handover Procedure (SDCCH)in the cell where the target SDCCH is located.
After receiving an HO REQ message from the MSC, the BSC measures R3350A: Channel
Activation Attempts in Incoming External Inter-Cell Handover Procedure (SDCCH) in thecell where the target SDCCH is located if the BSC assigns an SDCCH and sends a CHAN
ACTIV message to the BTS.
In the incoming external inter-cell SDCCH handover procedure, the BSC sends a CHAN
ACTIV message to the BTS. If the BTS returns a CHAN ACTIV NACK message, the
SDCCH handover fails. The BSC measures R3350B: CHAN ACTIV NACK Messages Sent by BTS in Incoming External Inter-Cell Handover Procedure (SDCCH) in the cell where the
target SDCCH is located.
In the incoming external inter-cell SDCCH handover procedure, the BSC sends a CHANACTIV message to the BTS and triggers an internal timer. If no CHAN ACTIV ACK message
is received within scheduled time (five seconds by default), the BSC measures R3350C:
Channel Activation Timeouts in Incoming External Inter-Cell Handover Procedure (SDCCH)in the cell where the target SDCCH is located.
Trigger Point
For the trigger points of the counters, see the flow charts in the following measurement units:
Immediate Assignment Measurement per Cell
Assignment Measurement per Cell
Intra-Cell Handover Measurement per Cell
Incoming Internal Inter-Cell Handover Measurement per Cell
Outgoing Internal Inter-Cell Handover Measurement per Cell
Incoming External Inter-Cell Handover Measurement per Cell
Outgoing External Inter-Cell Handover Measurement per Cell
Incoming Inter-RAT Inter-Cell Handover Measurement per Cell
Outgoing External Inter-Cell Handover Measurement per Cell
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Formula
None.
12.6.3 TCH Connection Measurement per CellCounter
Table 12-10 lists the counters of TCH Connection Measurement per Cell.
Table 12-10 TCH Connection Measurement per Cell
Number Counter
1 R3307A: Channel Activation Attempts in Immediate Assignment Procedure(TCHF)
2 R3308A: Channel Activation Attempts in Immediate Assignment Procedure(TCHH)
3 R3307B: CHAN ACTIV NACK Messages Sent by BTS in Immediate
Assignment Procedure (TCHF)
4 R3308B: CHAN ACTIV NACK Messages Sent by BTS in Immediate
Assignment Procedure (TCHH)
5 R3307C: Channel Activation Timeouts in Immediate Assignment Procedure(TCHF)
6 R3308C: Channel Activation Timeouts in Immediate Assignment Procedure
(TCHH)
7 R3317A: Channel Activation Attempts in Assignment Procedure (TCHF)
8 R3318A: Channel Activation Attempts in Assignment Procedure (TCHH)
9 R3317B: CHAN ACTIV NACK Messages Sent by BTS in AssignmentProcedure (TCHF)
10 R3318B: CHAN ACTIV NACK Messages Sent by BTS in Assignment
Procedure (TCHH)
11 R3317C: Channel Activation Timeouts in Assignment Procedure (TCHF)
12 R3318C: Channel Activation Timeouts in Assignment Procedure (TCHH)
13 R3327A: Channel Activation Attempts in Mode Modify Procedure (TCHF)
14 R3328A: Channel Activation Attempts in Mode Modify Procedure (TCHH)
15 R3327B: CHAN ACTIV NACK Messages Sent by BTS in Mode Modify
Procedure (TCHF)
16 R3328B: CHAN ACTIV NACK Messages Sent by BTS in Mode ModifyProcedure (TCHH)
17 R3327C: Channel Activation Timeouts in Mode Modify Procedure (TCHF)
18 R3328C: Channel Activation Timeouts in Mode Modify Procedure (TCHH)
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Number Counter
19 R3337A: Channel Activation Attempts in Internal Intra-Cell Handover
Procedure (TCHF)
20 R3338A: Channel Activation Attempts in Internal Intra-Cell HandoverProcedure (TCHH)
21 R3337B: CHAN ACTIV NACK Messages Sent by BTS in Internal Intra-CellHandover Procedure (TCHF)
22 R3338B: CHAN ACTIV NACK Messages Sent by BTS in Internal Intra-Cell
Handover Procedure (TCHH)
23 R3337C: Channel Activation Timeouts in Internal Intra-Cell HandoverProcedure (TCHF)
24 R3338C: Channel Activation Timeouts in Internal Intra-Cell Handover
Procedure (TCHH)
25 R3347A: Channel Activation Attempts in Incoming Internal Inter-CellHandover Procedure (TCHF)
26 R3348A: Channel Activation Attempts in Incoming Internal Inter-Cell
Handover Procedure (TCHH)
27 R3347B: CHAN ACTIV NACK Messages Sent by BTS in Incoming InternalInter-Cell Handover Procedure (TCHF)
28 R3348B: CHAN ACTIV NACK Messages Sent by BTS in Incoming InternalInter-Cell Handover Procedure (TCHH)
29 R3347C: Channel Activation Timeouts in Incoming Internal Inter-CellHandover Procedure (TCHF)
30 R3348C: Channel Activation Timeouts in Incoming Internal Inter-CellHandover Procedure (TCHH)
31 R3357A: Channel Activation Attempts in Incoming External Inter-CellHandover Procedure (TCHF)
32 R3358A: Channel Activation Attempts in Incoming External Inter-CellHandover Procedure (TCHH)
33 R3357B: CHAN ACTIV NACK Messages Sent by BTS in Incoming External
Inter-Cell Handover Procedure (TCHF)
34 R3358B: CHAN ACTIV NACK Messages Sent by BTS in Incoming ExternalInter-Cell Handover Procedure (TCHH)
35 R3357C: Channel Activation Timeouts in Incoming External Inter-CellHandover Procedure (TCHF)
36 R3358C: Channel Activation Timeouts in Incoming External Inter-CellHandover Procedure (TCHH)
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Meaning
In the immediate assignment procedure, the BSC receives a CHAN RQD message from the
BTS. If the BSC assigns a TCH (TCHF or TCHH) and sends a CHAN ACTIV message to the
BTS, the BSC measures R3307A: Channel Activation Attempts in Immediate Assignment
Procedure (TCHF) or R3308A: Channel Activation Attempts in Immediate AssignmentProcedure (TCHH) in the cell where the TCH is located.
In the TCH immediate assignment procedure, the BSC sends a CHAN ACTIV message to theBTS. If the BTS returns a CHAN ACTIV NACK message, the TCH activation fails. The BSC
measures R3307B: CHAN ACTIV NACK Messages Sent by BTS in Immediate AssignmentProcedure (TCHF) or R3308B: CHAN ACTIV NACK Messages Sent by BTS in ImmediateAssignment Procedure (TCHH) in the cell where the TCH is located.
In the TCH immediate assignment procedure, the BSC sends a CHAN ACTIV message to theBTS and triggers an internal timer. If no CHAN ACTIV ACK message is received within
scheduled time (five seconds by default), the BSC measures R3307C: Channel ActivationTimeouts in Immediate Assignment Procedure (TCHF) or R3308C: Channel Activation
Timeouts in Immediate Assignment Procedure (TCHH) in the cell where the TCH is located.
When the signaling or traffic is stable, the BSC receives an ASS REQ message from the MSC.If the requested service is of the speech or the data type and if the assignment procedure
proceeds, the BSC assigns a TCH and sends a CHAN ACTIV message to the BTS.Meanwhile, the BSC measures R3317A: Channel Activation Attempts in Assignment
Procedure (TCHF) and R3318A: Channel Activation Attempts in Assignment Procedure(TCHH) in the cell where the TCH is located.
In the assignment procedure, the BSC assigns a TCH and sends a CHAN ACTIV message to
the BTS. If the BTS returns a CHAN ACTIV NACK message, the channel activation fails.The BSC measures R3317B: CHAN ACTIV NACK Messages Sent by BTS in Assignment
Procedure (TCHF) or R3318B: CHAN ACTIV NACK Messages Sent by BTS in Assignment
Procedure (TCHH) in the cell where the TCH is located.
In the assignment procedure, the BSC assigns a TCH and sends a CHAN ACTIV message tothe BTS. The BSC also triggers an internal timer concurrently. If no CHAN ACTIV ACKmessage is received within scheduled time (five seconds by default), the BSC measures
R3317C: Channel Activation Timeouts in Assignment Procedure (TCHF) or R3318C:Channel Activation Timeouts in Assignment Procedure (TCHH) in the cell where the TCH is
located.
When the signaling or traffic is stable, the BSC receives an ASS REQ message from the MSC.
If the requested service is of the speech or the data type and the BSC decides to initiate theMode Modify procedure, the BSC sends a MODE MODIFY message to the BTS andmeasures R3327A: Channel Activation Attempts in Mode Modify Procedure (TCHF) or
R3328A: Channel Activation Attempts in Mode Modify Procedure (TCHH) in the cell wherethe TCH is located.
In the Mode Modify procedure, the BSC sends a MODE MODIFY message to the BTS. If the
BTS returns a MODE MODIFY NACK message, the Mode Modify procedure fails. The BSC
measures R3327B: CHAN ACTIV NACK Messages Sent by BTS in Mode Modify Procedure(TCHF) or R3328B: CHAN ACTIV NACK Messages Sent by BTS in Mode ModifyProcedure (TCHH) in the cell where the TCH is located.
In the Mode Modify procedure, the BSC sends a MODE MODIFY message to the BTS andtriggers an internal timer. If no MODE MODIFY ACK message is received within scheduledtime (five seconds by default), the BSC measures R3327C: Channel Activation Timeouts in
Mode Modify Procedure (TCHF) or R3328C: Channel Activation Timeouts in Mode Modify
Procedure (TCHH) in the cell where the TCH is located.
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When an MS is in stable state on a TCH, the BSC sends a CHAN ACTIV message to the BTSwhere the target cell is located if the BSC decides to initiate a handover based onmeasurement reports and if the target cell is the current cell. The BSC measures R3337A:
Channel Activation Attempts in Internal Intra-Cell Handover Procedure (TCHF) or R3338A:Channel Activation Attempts in Internal Intra-Cell Handover Procedure (TCHH) in the cell
where the target TCH is located.
In the intra-cell TCH handover procedure, the BSC sends a CHAN ACTIV message to theBTS. If the BTS returns a CHAN ACTIV NACK message, the channel activation fails. The
BSC measures R3337B: CHAN ACTIV NACK Messages Sent by BTS in Internal Intra-CellHandover Procedure (TCHF) or R3338B: CHAN ACTIV NACK Messages Sent by BTS in
Internal Intra-Cell Handover Procedure (TCHH) in the cell where the target TCH is located.
In the intra-cell TCH handover procedure, the BSC sends a CHAN ACTIV message to theBTS and triggers an internal timer. If no CHAN ACTIV ACK is received within scheduled
time (five seconds by default), the BSC measures R3337C: Channel Activation Timeouts inInternal Intra-Cell Handover Procedure (TCHF) or R3338C: Channel Activation Timeouts in
Internal Intra-Cell Handover Procedure (TCHH) in the cell where the target TCH is located.
When an MS is in stable state on a TCH, the BSC sends a CHAN ACTIV message to the BTSwhere the target cell is located if the BSC decides to initiate a handover based on
measurement reports and if the target cell and the current cell are two cells in one BSC.Meanwhile, the BSC measures R3347A: Channel Activation Attempts in Incoming Internal
Inter-Cell Handover Procedure (TCHF) or R3348A: Channel Activation Attempts inIncoming Internal Inter-Cell Handover Procedure (TCHH) in the cell where the target TCH is
located.
In the incoming internal inter-cell TCH handover procedure, the BSC sends a CHAN ACTIVmessage to the BTS. If the BTS return s a CHAN ACTIV NACK message, the channel
activation fails. The BSC measures R3347B: CHAN ACTIV NACK Messages Sent by BTSin Incoming Internal Inter-Cell Handover Procedure (TCHF) and R3348B: CHAN ACTIV
NACK Messages Sent by BTS in Incoming Internal Inter-Cell Handover Procedure (TCHH)in the cell where the target TCH is located.
In the incoming internal inter-cell TCH handover procedure, the BSC sends a CHAN ACTIVmessage to the BTS and triggers an internal timer. If no CHAN ACTIV ACK message isreceived within scheduled time (five seconds by default), the BSC measures R3347C:
Channel Activation Timeouts in Incoming Internal Inter-Cell Handover Procedure (TCHF) or
R3348C: Channel Activation Timeouts in Incoming Internal Inter-Cell Handover Procedure(TCHH) in the cell where the target TCH is located.
The BSC receives a HO REQ message from the MSC. If the BSC assigns a TCH and sends a
CHAN ACTIV to the BTS, the BSC measures R3357A: Channel Activation Attempts inIncoming External Inter-Cell Handover Procedure (TCHF) or R3358A: Channel Activation
Attempts in Incoming External Inter-Cell Handover Procedure (TCHH) in the cell where thetarget TCH is located.
In the incoming external inter-cell TCH handover procedure, the BSC sends a CHAN ACTIVmessage to the BTS. If the BTS returns a CHAN ACTIV NACK message, the channel
activation fails. The BSC measures R3357B: CHAN ACTIV NACK Messages Sent by BTS
in Incoming External Inter-Cell Handover Procedure (TCHF) or R3358B: CHAN ACTIV NACK Messages Sent by BTS in Incoming External Inter-Cell Handover Procedure (TCHH)in the cell where the target TCH is located.
In the incoming external inter-cell TCH handover procedure, the BSC sends a CHAN ACTIVmessage to the BTS and triggers an internal timer. If no CHAN ACTIV ACK message isreceived within scheduled time (five seconds by default), the BSC measures R3357C:
Channel Activation Timeouts in Incoming External Inter-Cell Handover Procedure (TCHF) or
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R3358C: Channel Activation Timeouts in Incoming External Inter-Cell Handover Procedure(TCHH) in the cell where the target TCH is located.
Trigger Point
For the trigger points of the counters, see the flow charts in the following measurement units:
Immediate Assignment Measurement per Cell
Assignment Measurement per Cell
Intra-Cell Handover Measurement per Cell
Incoming Internal Inter-Cell Handover Measurement per Cell
Outgoing Internal Inter-Cell Handover Measurement per Cell
Incoming External Inter-Cell Handover Measurement per Cell
Outgoing External Inter-Cell Handover Measurement per Cell
Incoming Inter-RAT Inter-Cell Handover Measurement per Cell
Outgoing External Inter-Cell Handover Measurement per Cell
Formula
None.
12.6.4 Channel Activation Analyzed Measurement per Cell
Counter
Table 12-11 lists the counters of Channel Activation Analyzed Measurement per Cell.
Table 12-11 Counters of Channel Activation Analyzed Measurement per Cell
Number Counter
1 CR33A: Channel Activation Attempts
2 CR330A: Channel Activation Attempts in Immediate Assignment Procedure
3 CR331A: Channel Activation Attempts in Assignment Procedure
4 CR332A: Channel Activation Attempts in Mode Modify Procedure
5 CR333A: Channel Activation Attempts in Internal Intra-Cell HandoverProcedure
6 CR334A: Channel Activation Attempts in Incoming Internal Inter-CellHandover Procedure
7 CR335A: Channel Activation Attempts in Incoming External Inter-CellHandover Procedure
8 CR33B: CHAN ACTIV NACK Messages Sent by BTS
9 CR330B: CHAN ACTIV NACK Messages Sent by BTS in Immediate
Assignment Procedure
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Number Counter
10 CR331B: CHAN ACTIV NACK Messages Sent by BTS in Assignment
Procedure
11 CR332B: CHAN ACTIV NACK Messages Sent by BTS in Mode ModifyProcedure
12 CR333B: CHAN ACTIV NACK Messages Sent by BTS in Internal Intra-CellHandover Procedure
13 CR334B: CHAN ACTIV NACK Messages Sent by BTS in Incoming Internal
Inter-Cell Handover Procedure
14 CR335B: CHAN ACTIV NACK Messages Sent by BTS in Incoming ExternalInter-Cell Handover Procedure
15 CR33C: Channel Activation Timeouts
16 CR330C: Channel Activation Timeouts in Immediate Assignment Procedure
17 CR331C: Channel Activation Timeouts in Assignment Procedure
18 CR332C: Channel Activation Timeouts in Mode Modify Procedure
19 CR333C: Channel Activation Timeouts in Internal Intra-Cell HandoverProcedure
20 CR334C: Channel Activation Timeouts in Incoming Internal Inter-CellHandover Procedure
21 CR335C: Channel Activation Timeouts in Incoming External Inter-Cell
Handover Procedure
Meaning
None.
Trigger Point
None.
Formula
Channel Activation Attempts =
[Channel Activation Attempts in Immediate Assignment Procedure] +
[Channel Activation Attempts in Assignment Procedure] +
[Channel Activation Attempts in Mode Modify Procedure] +
[Channel Activation Attempts in Internal Intra-Cell Handover Procedure] +
[Channel Activation Attempts in Incoming Internal Inter-Cell Handover Procedure] +
[Channel Activation Attempts in Incoming External Inter-Cell Handover Procedure]
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Channel Activation Attempts in Immediate Assignment Procedure =
[Channel Activation Attempts in Immediate Assignment Procedure (SDCCH)] +
[Channel Activation Attempts in Immediate Assignment Procedure (TCHF)] +
[Channel Activation Attempts in Immediate Assignment Procedure (TCHH)]
Channel Activation Attempts in Assignment Procedure =
[Channel Activation Attempts in Assignment Procedure (TCHF)] +
[Channel Activation Attempts in Assignment Procedure (TCHH)]
Channel Activation Attempts in Mode Modify Procedure =
[Channel Activation Attempts in Mode Modify Procedure (TCHF)] +[Channel Activation Attempts in Mode Modify Procedure (TCHH)]
Channel Activation Attempts in Internal Intra-Cell Handover Procedure =
[Channel Activation Attempts in Internal Intra-Cell Handover Procedure (SDCCH)] +
[Channel Activation Attempts in Internal Intra-Cell Handover Procedure (TCHF)] +
[Channel Activation Attempts in Internal Intra-Cell Handover Procedure (TCHH)]
Channel Activation Attempts in Incoming Internal Inter-Cell Handover Procedure =
[Channel Activation Attempts in Incoming Internal Inter-Cell Handover Procedure (SDCCH)]
+
[Channel Activation Attempts in Incoming Internal Inter-Cell Handover Procedure (TCHF)] +
[Channel Activation Attempts in Incoming Internal Inter-Cell Handover Procedure (TCHH)]
Channel Activation Attempts in Incoming External Inter-Cell Handover Procedure =
[Channel Activation Attempts in Incoming External Inter-Cell Handover Procedure (SDCCH)]
+
[Channel Activation Attempts in Incoming External Inter-Cell Handover Procedure (TCHF)]+
[Channel Activation Attempts in Incoming External Inter-Cell Handover Procedure (TCHH)]
CHAN ACTIV NACK Messages Sent by BTS =
[CHAN ACTIV NACK Messages Sent by BTS in Immediate Assignment Procedure] +
[CHAN ACTIV NACK Messages Sent by BTS in Assignment Procedure] +
[CHAN ACTIV NACK Messages Sent by BTS in Mode Modify Procedure] +
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[CHAN ACTIV NACK Messages Sent by BTS in Internal Intra-Cell Handover Procedure] +
[CHAN ACTIV NACK Messages Sent by BTS in Incoming Internal Inter-Cell Handover
Procedure] +
[CHAN ACTIV NACK Messages Sent by BTS in Incoming External Inter-Cell HandoverProcedure]
CHAN ACTIV NACK Messages Sent by BTS in Immediate Assignment Procedure =
[CHAN ACTIV NACK Messages Sent by BTS in Immediate Assignment Procedure(SDCCH)] +
[CHAN ACTIV NACK Messages Sent by BTS in Immediate Assignment Procedure (TCHF)]+
[CHAN ACTIV NACK Messages Sent by BTS in Immediate Assignment Procedure (TCHH)]
CHAN ACTIV NACK Messages Sent by BTS in Assignment Procedure =
[CHAN ACTIV NACK Messages Sent by BTS in Assignment Procedure (TCHF)] +
[CHAN ACTIV NACK Messages Sent by BTS in Assignment Procedure (TCHH)]
CHAN ACTIV NACK Messages Sent by BTS in Mode Modify Procedure =
[CHAN ACTIV NACK Messages Sent by BTS in Mode Modify Procedure (TCHF)] +
[CHAN ACTIV NACK Messages Sent by BTS in Mode Modify Procedure (TCHH)]
CHAN ACTIV NACK Messages Sent by BTS in Internal Intra-Cell Handover Procedure =
[CHAN ACTIV NACK Messages Sent by BTS in Internal Intra-Cell Handover Procedure
(SDCCH)] +
[CHAN ACTIV NACK Messages Sent by BTS in Internal Intra-Cell Handover Procedure
(TCHF)] +
[CHAN ACTIV NACK Messages Sent by BTS in Internal Intra-Cell Handover Procedure
(TCHH)]
CHAN ACTIV NACK Messages Sent by BTS in Incoming Internal Inter-Cell Handover
Procedure =
[CHAN ACTIV NACK Messages Sent by BTS in Incoming Internal Inter-Cell Handover
Procedure (SDCCH)] +
[CHAN ACTIV NACK Messages Sent by BTS in Incoming Internal Inter-Cell HandoverProcedure (TCHF)] +
[CHAN ACTIV NACK Messages Sent by BTS in Incoming Internal Inter-Cell HandoverProcedure (TCHH)]
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CHAN ACTIV NACK Messages Sent by BTS in Incoming External Inter-Cell HandoverProcedure =
[CHAN ACTIV NACK Messages Sent by BTS in Incoming External Inter-Cell Handover
Procedure (SDCCH)] +
[CHAN ACTIV NACK Messages Sent by BTS in Incoming External Inter-Cell Handover
Procedure (TCHF)] +
[CHAN ACTIV NACK Messages Sent by BTS in Incoming External Inter-Cell HandoverProcedure (TCHH)]
Channel Activation Timeouts =
[Channel Activation Timeouts in Immediate Assignment Procedure] +
[Channel Activation Timeouts in Assignment Procedure] +
[Channel Activation Timeouts in Mode Modify Procedure] +
[Channel Activation Timeouts in Internal Intra-Cell Handover Procedure] +
[Channel Activation Timeouts in Incoming Internal Inter-Cell Handover Procedure] +
[Channel Activation Timeouts in Incoming External Inter-Cell Handover Procedure]
Channel Activation Timeouts in Immediate Assignment Procedure =
[Channel Activation Timeouts in Immediate Assignment Procedure (SDCCH)] +
[Channel Activation Timeouts in Immediate Assignment Procedure (TCHF)] +[Channel Activation Timeouts in Immediate Assignment Procedure (TCHH)]
Channel Activation Timeouts in Assignment Procedure =
[Channel Activation Timeouts in Assignment Procedure (TCHF)] +
[Channel Activation Timeouts in Assignment Procedure (TCHH)]
Channel Activation Timeouts in Mode Modify Procedure =
[Channel Activation Timeouts in Mode Modify Procedure (TCHF)] +
[Channel Activation Timeouts in Mode Modify Procedure (TCHH)]
Channel Activation Timeouts in Internal Intra-Cell Handover Procedure =
[Channel Activation Timeouts in Internal Intra-Cell Handover Procedure (SDCCH)] +
[Channel Activation Timeouts in Internal Intra-Cell Handover Procedure (TCHF)] +
[Channel Activation Timeouts in Internal Intra-Cell Handover Procedure (TCHH)]
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Channel Activation Timeouts in Incoming Internal Inter-Cell Handover Procedure =
[Channel Activation Timeouts in Incoming Internal Inter-Cell Handover Procedure (SDCCH)]
+
[Channel Activation Timeouts in Incoming Internal Inter-Cell Handover Procedure (TCHF)] +[Channel Activation Timeouts in Incoming Internal Inter-Cell Handover Procedure (TCHH)]
Channel Activation Timeouts in Incoming External Inter-Cell Handover Procedure =
[Channel Activation Timeouts in Incoming External Inter-Cell Handover Procedure (SDCCH)]
+
[Channel Activation Timeouts in Incoming External Inter-Cell Handover Procedure (TCHF)]+
[Channel Activation Timeouts in Incoming External Inter-Cell Handover Procedure (TCHH)]
12.7 Channel Seizure Measurement per TRX
Counter
Channel Seizure Measurement per TRX is used to measure the channel seizures in all types ofservice procedures.
Table 12-12 lists the counters of Channel Seizure Measurement per TRX.
Table 12-12 Counters of Channel Seizure Measurement per TRX
Number Counter
1 R4400A: Attempted Immediate Assignments (SDCCH)
2 R4409A: Attempted Immediate Assignments (TCH)
3 R4400B: Successful Immediate Assignments (SDCCH)
4 R4409B: Attempted Immediate Assignment Procedures (TCH)
5 R4419A: Attempted Assignments (TCH)
6 R4419B: Completed Assignments (TCH)
7 R4429A: Attempted Mode Modify Procedures (TCH)
8 R4429B: Completed Mode Modify Procedures (TCH)
9 R4430A: Attempted Handovers (SDCCH)
10 R4439A: Attempted Handovers (TCH)
11 R4430B: Completed Handovers (SDCCH)
12 R4439B: Completed Handovers (TCH)
13 CR440A: Attempted Immediate Assignments
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Number Counter
14 CR440B: Successful Immediate Assignments
15 CR443A: Attempted Handovers
16 CR443B: Completed Handovers
Meaning
In the SDCCH immediate assignment procedure, the BSC receives from the BTS a CHAN
ACTIV ACK message, indicating that the SDCCH is successfully activated. The BSC sends
an IMM ASS CMD message, requesting the MS to access the specified SDCCH. Meanwhile,the BSC measures R4400A: Attempted Immediate Assignments (SDCCH) in the TRX where
the SDCCH is located.
In the TCH immediate assignment procedure, the BSC receives from the BTS a CHANACTIV ACK message, indicating that the TCH is successfully activated. The BSC sends an
IMM ASS CMD message, requesting the MS to access the specified TCH. Meanwhile, theBSC measures R4409A: Attempted Immediate Assignments (TCH) in the TRX where the
TCH is located.
In the SDCCH immediate assignment procedure, an MS reports a FIRST SABM frame to theBTS on the SDCCH after seizing the assigned SDCCH. Through this frame, the MS notifies
the BTS that the radio link layer has entered multiframe link setup state. The BTS returns aUA frame to the MS and sends the BSC an EST IND message to notify the BSC that the link
is established on the Um interface. After receiving the EST IND message, the BSC measuresR4400B: Successful Immediate Assignments (SDCCH) in the TRX where the SDCCH is
located.
In the TCH immediate assignment procedure, an MS reports a FIRST SABM frame to theBTS on the TCH after seizing the assigned TCH. Through this frame, the MS notifies the BTS
that the radio link layer has entered multiframe link setup state. The BTS returns a UA frameto the MS and sends the BSC an EST IND message to notify the BSC that the link is
established on the Um interface. After receiving the EST IND message, the BSC measuresR4409B: Attempted Immediate Assignment Procedures (TCH) in the TRX where the TCH islocated.
In the assignment procedure, the BSC assigns a TCH and receives a CHAN ACTIV ACKmessage. The BSC then sends an ASS CMD message to the MS and measures R4419A
Attempted Assignments (TCH) in the TRX where the TCH is located.
In the assignment procedure, the BSC assigns a TCH and sends an ASS CMD message to theMS. After receiving the ASS CMD message, the MS sends the BTS a FIRST SABM frame,
indicating that the Um interface is in multiframe link setup state. The BTS returns a UA frameto the MS and sends the BSC an EST IND message, indicating that the link is established on
the Um interface. After receiving the UA frame, the MS sends an ASS CMP message to theBSC. The BSC receives this message and measures R4419B: Completed Assignments (TCH)
in the TRX where the TCH is located.
In the Mode Modify procedure, the BSC sends a CHAN MODE MODIFY message to the MSafter receiving a MODE MODIFY ACK message. Meanwhile, the BSC measures R4429A:
Attempted Mode Modify Procedures (TCH) in the TRX where the TCH is located.
In the Mode Modify procedure, the MS sends a FIRST SABM frame to the BTS afterreceiving a CHAN MODE MODIFY message. This frame indicates that the Um interface is in
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multiframe link setup state. The BTS returns a UA frame to the MS and sends the BSC anEST IND message, indicating that the link is established on the Um interface. After receivingthe UA frame, the MS sends a CHAN MODE MODIFY ACK message to the BSC. The BSC
receives this message and measures R4429B: Completed Mode Modify Procedures (TCH) inthe TRX where the TCH is located.
In the SDCCH handover procedure, the BSC sends an HO CMD message from the source cell
to the MS after receiving a CHAN ACTIV ACK message from the target cell. Meanwhile, theBSC measures R4430A: Attempted Handovers (SDCCH) in the TRX where the target
SDCCH is located.
In the TCH handover procedure, the BSC sends an HO CMD message from the source cell tothe MS after receiving a CHAN ACTIV ACK message from the target cell. Meanwhile, the
BSC measures R4439A: Attempted Handovers (TCH) in the TRX where the target TCH islocated.
In the SDCCH handover procedure, the MS sends an HO ACC message to the BTS where thetarget cell is located after receiving an HO CMD message. The BTS notifies the BSC of this
message through an HO DETECT message. If the source cell and the target cell belong todifferent BTSs, the BTS where the target cell is located sends a PHY INFO message to theMS. The MS returns a FIRST SABM frame and sends an EST IND message from the target
cell to the BSC. The MS also sends an HO CMP message to the BSC. After receiving thismessage, the BSC measures R4430B: Completed Handovers (SDCCH) in the TRX where the
target SDCCH is located.
In the TCH handover procedure, the MS sends an HO ACC message to the BTS where thetarget cell is located after receiving an HO CMD message. The BTS notifies the BSC of this
message through an HO DETECT message. If the source cell and the target cell belong todifferent BTSs, the BTS where the target cell is located sends a PHY INFO message to the
MS. The MS returns a FIRST SABM frame and sends an EST IND message from the targetcell to the BSC. The MS also sends an HO CMP message to the BSC. After receiving this
message, the BSC measures R4439B: Completed Handovers (TCH) in the TRX where thetarget TCH is located.
In the immediate assignment procedure, the BSC receives from the BTS a CHAN ACTIVACK message, indicating that the channel is successfully activated. The BSC sends an IMMASS CMD message, requesting the MS to access the specified channel. This channel can be
an SDCCH or a TCH. CR440A: Attempted Immediate Assignments is used to measure the
IMM ASS CMD messages received on all the channels of a TRX.
In the immediate assignment procedure, an MS reports a FIRST SABM frame to the BTS on
the TCH after seizing the assigned channel. Through this frame, the MS notifies the BTS that
the radio link layer has entered multiframe link setup state. The BTS returns a UA frame tothe MS and sends the BSC an EST IND message to notify the BSC that the link is established
on the Um interface. The channel can be an SDCCH or a TCH. CR440B: SuccessfulImmediate Assignment Procedures is used to measure the EST IND messages received on all
the channels of a TRX.
In a handover procedure, the BSC sends an HO CMD message from the source cell to the MS
after receiving a CHAN ACTIV ACK message from the target cell. The handover can be an
SDCCH handover or a TCH handover. CR443A: Attempted Handovers is used to measure theHandover CMD messages received on all the channels of a TRX.
In a handover procedure, the MS sends an HO ACC message to the BTS where the target cell
is located after receiving an HO CMD message. The BTS notifies the BSC of this messagethrough an HO DETECT message. If the source cell and the target cell belong to differentBTSs, the BTS where the target cell is located sends a PHY INFO message to the MS. The
MS returns a FIRST SABM frame and sends an EST IND message from the target cell to the
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BSC. The MS also sends an HO CMP message to the BSC. CR443B: Completed Handoversis used to measure the Handover CMP received on all the channels of a TRX.
Trigger Point
For the trigger points of the counters, see the flow charts in Immediate Assignment
Measurement per Cell, Assignment Measurement per Cell, Intra-Cell Handover Measurement per Cell, Incoming Internal Inter-Cell Handover Measurement per Cell, Outgoing Internal
Inter-Cell Handover Measurement per Cell, Incoming External Inter-Cell HandoverMeasurement per Cell, Outgoing External Inter-Cell Handover Measurement per Cell,
Incoming Inter-RAT Inter-Cell Handover Measurement per Cell, and Outgoing Inter-RATInter-Cell Handover Measurement per Cell.
Formula
Attempted Immediate Assignments =
[Attempted Immediate Assignments (SDCCH)] +
[Attempted Immediate Assignments (TCH)]
Successful Immediate Assignment Procedures =
[Successful Immediate Assignments (SDCCH)] +
[Attempted Immediate Assignment Procedures (TCH)]
Attempted Handovers =
[Attempted Handovers (SDCCH)] +
[Attempted Handovers (TCH)]
Completed Handovers =
[Completed Handovers (SDCCH)] +
[Completed Handovers (TCH)]
12.8 Immediate Assignment Measurement per Cell12.8.1 Overview
When an MS requires network services for reasons such as Mobile Originated Call (MOC),Mobile Terminated Call (MTC), emergency call, call re-establishment, location updating,
packet call, and Location Measurement Unit (LMU)+Reserved, it sends the BTS a CHANREQ message on the RACH. After receiving this message, the BTS reports a CHAN RQD
message to the BSC.
After receiving the CHAN RQD message, the BSC assigns and activates a signaling channelto the MS. If the BSC receives a CHAN ACTIV ACK message from the BTS, the signaling
channel is ready for the assignment. The BSC sends an IMM ASS CMD message, requesting
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the MS to access the specified signaling channel. This signaling channel can be an SDCCH ora TCH.
After receiving a FIRST SABM frame from the MS, the BTS sends an EST IND message to
the BSC.
After receiving the EST IND message that carries an MM message (CM SERV REQ message,
LOC UPD REQ message, IMSI DTCH message, PAG RSP message, CM RE-EST REQ
message), the BSC requests the MSC to establish the A interface connection and transparentlytransmits the MM message to the MSC.
Figure 12-1 shows the immediate assignment procedure.
Figure 12-1 Immediate assignment procedure
BTS BSCMS
C
IMM ASS CMD
B
A
CHAN REQ
CHAN RQD
CHAN ACTIV
CHAN ACTIV ACK
EST IND
Table 12-13 lists the counter classification of Immediate Assignment Measurement per Cell.
Table 12-13 Counter classification of Immediate Assignment Measurement per Cell
Counter Classification Section
Channel Requests per Cell 12.8.2
Immediate Assignment Commands per Cell 12.8.3
Call Setup Indications per Cell 12.8.4
Rejects to Service Requests per Cell 12.8.5
Immediate Assignment Analyzed Measurement per Cell 12.8.6
12.8.2 Channel Requests per Cell
Counter
Table 12-14 lists the counters of Channel Requests per Cell.
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Table 12-14 Counters of Channel Requests per Cell
Number Counter
1 A300A: Channel Requests (MOC)
2 A300C: Channel Requests (MTC)
3 A300D: Channel Requests (Emergency Call)
4 A300E: Channel Requests (Call Re-establishment)
5 A300F: Channel Requests (Location Updating)
6 A300H: Channel Requests (Packet Call)
7 A300I: Channel Requests (LMU+Reserved)
Meaning
When an MS requires network services, it sends the BTS a CHAN REQ message on the
RACH. After receiving this message, the BTS reports a CHAN RQD message to the BSC for
a dedicated channel. The counters measure channel access due to different causes.
Trigger Point
As shown in Figure 12-1 (A), the measurement is triggered when the BSC receives a CHAN
RQD message from the BTS where the target cell is located. The measurement is based on theaccess cause.
Formula
None.
12.8.3 Immediate Assignment Commands per Cell
Counter
Table 12-15 lists the counters of Immediate Assignment Commands per Cell.
Table 12-15 Counters of Immediate Assignment Commands per Cell
Number Counter
1 A3010: Immediate Assignment Commands (SDCCH)
2 A3017: Immediate Assignment Commands (TCHF)
3 A3018: Immediate Assignment Commands (TCHH)
4 A301H: Immediate Assignment Commands (Packet Service)
5 A302J: Rejects to Immediate Assignments (Circuit Service)
6 A302H: Rejects to Immediate Assignments (Packet Service)
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Meaning
In the immediate assignment procedure, the BSC sends the MS an IMM ASS CMD message
after receiving a CHAN ACTIV ACK message from the BTS. Through this message, the BSC
notifies the MS to access the specified signaling channel. The signaling channel can be an
SDCCH, TCHF, or TCHH. The access cause is circuit services or packet services.
After receiving a CHAN RQD message from the BTS, the BSC sends the MS an IMM ASS
REJ message if there is no channel available, the channel activation fails, or the channelactivation timed out. The immediate assignment fails.
Trigger Point
Figure 12-2 shows the trigger points of the counters of Immediate Assignment Commands per
Cell.
Figure 12-2 trigger points of the counters of Immediate Assignment Commands per Cell
BTS BSCMS
C
IMM ASS REJ
B
A
CHAN REQ
CHAN RQD
CHAN ACTIV
CHAN ACTIV NACK
TIME OUT
IMM ASS REJ
IMM ASS REJ
As shown in Figure 12-1 (B), the measurement related to immediate assignment commands is
triggered when the BSC sends an IMM ASS CMD message to an MS in the target cell. Themeasurement is based on the channel type and the access cause.
As shown in Figure 12-2 (A), (B), and (C), the BSC sends an IMM ASS REJ message to anMS in the target cell. If the access cause is packet services, the BSC measures Rejects toImmediate Assignments (Packet Service). If the access cause is not packet services, the BSCmeasures Rejects to Immediate Assignments (Circuit Service).
The descriptions of trigger points A, B, and C are as follows:
Trigger point A means that the immediate assignment is rejected because there are noavailable channels.
Trigger point B means that the immediate assignment is rejected because the channelactivation fails.
Trigger point C means that the immediate assignment is rejected because the channel
activation timed out.
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Formula
None.
12.8.4 Call Setup Indications per CellCounter
Table 12-16 lists the counters of Call Setup Indications.
Table 12-16 Counters of Call Setup Indications
Number Counter
1 A3030A: Call Setup Indications (MOC Non SMS) (SDCCH)
2 A3030B: Call Setup Indications (MOC SMS) (SDCCH)
3 A3030C: Call Setup Indications (MTC) (SDCCH)
4 A3030D: Call Setup Indications (Emergency Call) (SDCCH)
5 A3030E: Call Setup Indications (Call Re-establishment) (SDCCH)
6 A3030F: Call Setup Indications (Location Updating) (SDCCH)
7 A3030G: Call Setup Indications (IMSI Detach) (SDCCH)
8 A3030H: Call Setup Indications (Packet Service) (SDCCH)
9 A3030I: Call Setup Indications (SS) (SDCCH)
10 A3030J: Call Setup Indications (LCS) (SDCCH)
11 A3030K: Call Setup Indications (Others) (SDCCH)
12 A3037A: Call Setup Indications (MOC Non SMS) (TCHF)
13 A3037B: Call Setup Indications (MOC SMS) (TCHF)
14 A3037C: Call Setup Indications (MTC) (TCHF)
15 A3037D: Call Setup Indications (Emergency Call) (TCHF)
16 A3037E: Call Setup Indications (Call Re-establishment) (TCHF)
17 A3037G: Call Setup Indications (IMSI Detach) (TCHF)
18 A3037H: Call Setup Indications (Packet Service) (TCHF)
19 A3037I: Call Setup Indications (SS) (TCHF)
20 A3037J: Call Setup Indications (LCS) (TCHF)
21 A3037K: Call Setup Indications (Others) (TCHF)
22 A3038A: Call Setup Indications (MOC Non SMS) (TCHH)
23 A3038C: Call Setup Indications (MTC) (TCHH)
24 A3038E: Call Setup Indications (Call Re-establishment) (TCHH)
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Number Counter
25 A3038H: Call Setup Indications (Packet Service) (TCHH)
26 A3038I: Call Setup Indications (SS) (TCHH)
27 A3038J: Call Setup Indications (LCS) (TCHH)
28 A3038K: Call Setup Indications (Others) (TCHH)
29 A3040: Call Setup Indications Timed Out (SDCCH)
30 A3047: Call Setup Indications Timed Out (TCHF)
31 A3048: Call Setup Indications Timed Out (TCHH)
32 A3039J: SDCCH Seizures for Speech Service
Meaning
In the immediate assignment procedure, an MS reports a FIRST SABM frame to the BTS on
the seized signaling channel (SDCCH, TCHF, or TCHH). Through this frame, the MS notifies
the BTS that the radio link layer has entered the multiframe link setup state. The BTS returnsa UA frame to the MS and sends the BSC an EST IND message to notify the BSC that thelink is established on the Um interface.
After link setup on the air interface, counter A3039J: SDCCH Seizures for Speech Service ismeasured for speed service.
In the immediate assignment procedure, the BSC sends an IMM ASS CMD message to an MS
and triggers a timer. If no EST IND message is received within scheduled time (10 seconds bydefault), the BSC measures the counters related to the timeout of call setup indications.
Trigger Point
As shown in Figure 12-1 (C), the measurement related to call setup indications is triggered
when the BSC receives an EST IND message from the BTS where the target cell is located.This measurement is based on the channel type, the value of the service request message, and
the number of seized SDCCHs for speech service.
As shown in Figure 12-3 (A), the BSC sends an IMM ASS CMD message in the target cell.
The measurement related to the timeout of call setup indications is triggered if no EST IND
message is received within scheduled time. This measurement is based on the channel type.
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Figure 12-3 Trigger points of the counters of Call Setup Indications
BTS BSCMS
A
IMM ASS CMD
CHAN REQ
CHAN RQD
CHAN ACTIV
CHAN ACTIV ACK
TIME OUT
Formula
None.
12.8.5 Rejects to Service Requests per Cell
Counter
Table 12-17 lists the counters of Rejects to Service Requests per Cell.
Table 12-17 Counter of Rejects to Service Requests per Cell
Number Counter
1 A3050: Rejects to Service Requests (Congestion)
2 A3051: Rejects to Service Requests (Network Failure)
3 A3052: Rejects to Service Requests (Illegal MS)
4 A3053: Rejects to Service Requests (Other Causes)
Meaning
In the immediate assignment procedure where an MS requests for connection setup, the MS
establishes an RR connection with the BSS first, and then sends a CM SERV REQ message
on the MM layer. The BSS transparently transmits this message to the NSS. If the NSS doesnot support or cannot respond to the service request due to congestion, network failure, illegal
MS or other causes, the MSC sends a CM SERV REJ message to the MS and the BSCtransparently transmits this message.
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Trigger Point
As shown in Figure 12-4 (A), the measurement is triggered when the BSC receives a CM
SERV REJ message that is sent from the MSC to an MS in the target cell. The measurement is
based on the reject cause.
Figure 12-4 Trigger points of the counters of Rejects to Service Requests per Cell
BTS BSCMS
A
IMM ASS CMD
CHAN REQ
CHAN RQD
CHAN ACTIV
CHAN ACTIV ACK
EST IND
CR
CC
CM SERV REJ
MSC
Formula
None.
12.8.6 Immediate Assignment Analyzed Measurement per Cell
Counter
Table 12-18 lists the counters of Immediate Assignment Analyzed Measurement per Cell.
Table 12-18 Counters of Immediate Assignment Analyzed Measurement per Cell
Number Counter
1 CA300J: Channel Requests (Circuit Service)
2 CA303J: Call Setup Indications (Circuit Service)
3 CA3030J: Call Setup Indications (SDCCH) (Circuit Service)
4 CA3039J: Call Setup Indications (TCH) (Circuit Service)
5 RA301G: Success Rate of Immediate Assignment
6 CA301J: Immediate Assignment Commands (Circuit Service)
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Number Counter
7 CA303H: Call Setup Indications (Packet Service)
8 CA304: Call Setup Indications Timed Out
9 CA305: Rejects to Service Requests
10 RA303G: Success Rate of Call Setup (Immediate Assignment)
Meaning
None.
Trigger Point
None.
Formula
Channel Requests (Circuit Service) =
[Channel Requests (MOC)] +
[Channel Requests (MTC)] +
[Channel Requests (Emergency Call)] +
[Channel Requests (Call Re-establishment)] +
[Channel Requests (Location Updating)]
Call Setup Indications (Circuit Service) =
[Call Setup Indications (SDCCH) (Circuit Service)] +
[Call Setup Indications (TCH) (Circuit Service)]
Call Setup Indications (SDCCH) (Circuit Service) =
[Call Setup Indications (MOC Non SMS) (SDCCH)] +
[Call Setup Indications (MOC SMS) (SDCCH)] +
[Call Setup Indications (MTC) (SDCCH)] +
[Call Setup Indications (Emergency Call) (SDCCH)] +
[Call Setup Indications (Call Re-establishment) (SDCCH)] +
[Call Setup Indications (Location Updating) (SDCCH)] +
[Call Setup Indications (IMSI Detach) (SDCCH)]
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Call Setup Indications (TCH) (Circuit Service) =
[Call Setup Indications (MOC Non SMS) (TCHF)] +
[Call Setup Indications (MOC SMS) (TCHF)] +
[Call Setup Indications (MTC) (TCHF)] +
[Call Setup Indications (Emergency Call) (TCHF)] +
[Call Setup Indications (Call Re-establishment) (TCHF)] +
[Call Setup Indications (IMSI Detach) (TCHF)] +
[Call Setup Indications (MOC Non SMS) (TCHH)] +
[Call Setup Indications (MTC) (TCHH)] +
[Call Setup Indications (Call Re-establishment) (TCHH)]
Success Rate of Immediate Assignment =
[Immediate Assignment Commands (Circuit Service)]*{100}/[Channel Requests (Circuit
Service)]
Immediate Assignment Commands (Circuit Service) =
[Immediate Assignment Commands (SDCCH)] +
[Immediate Assignment Commands (TCHF)] +
[Immediate Assignment Commands (TCHH)]
Call Setup Indications (Packet Service) =
[Call Setup Indications (Packet Service) (SDCCH)] +
[Call Setup Indications (Packet Service) (TCHF)] +
[Call Setup Indications (Packet Service) (TCHH)]
Call Setup Indications Timed Out =
[Call Setup Indications Timed Out (SDCCH)] +
[Call Setup Indications Timed Out (TCHF)] +
[Call Setup Indications Timed Out (TCHH)]
Rejects to Service Requests =
[Rejects to Service Requests (Congestion)] +
[Rejects to Service Requests (Network Failure)] +
[Rejects to Service Requests (Illegal MS)] +
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[Rejects to Service Requests (Other Causes)]
Success Rate of Call Setup (Immediate Assignment) =
[Call Setup Indications (Circuit Service)]*{100}/[Channel Requests (Circuit Service)]
12.9 Assignment Measurement per Cell
12.9.1 Overview
Table 12-19 lists the counter classification of Assignment Measurement per Cell.
Table 12-19 Counter classification of Assignment Measurement per Cell
Counter Classification Section
Assignment Requests per Cell 12.9.2
Assignment Commands per Cell 12.9.3
Completed Assignments per Cell 12.9.4
Failed Assignments per Cell 12.9.5
Mode Modify Commands per Cell 12.9.6
Failed Mode Modify Attempts per Cell 12.9.7
Assignment Procedure Analyzed Measurement per Cell 12.9.8
12.9.2 Assignment Requests per Cell
Counter
Table 12-20 lists the counters of Assignment Requests per Cell.
Table 12-20 Counters of Assignment Requests per Cell
Number Counter
1 A3100A: Assignment Requests (Signaling Channel)
2 A3100B: Assignment Requests (TCHF Only)
3 A3100C: Assignment Requests (TCHH Only)
4 A3100D: Assignment Requests (TCHF Preferred, Channel Type
Unchangeable)
5 A3100E: Assignment Requests (TCHH Preferred, Channel TypeUnchangeable)
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Number Counter
6 A3100F: Assignment Requests (TCHF or TCHH, Channel Type
Unchangeable)
7 A3100G: Assignment Requests (TCHF Preferred, Channel Type Changeable)
8 A3100H: Assignment Requests (TCHH Preferred, Channel Type Changeable)
9 A3100I: Assignment Requests (TCHF or TCHH, Channel Type Changeable)
10 A3101A: Assignment Requests (MOC)
11 A3101C: Assignment Requests (MTC)
12 A3101D: Assignment Requests (Emergency Call)
13 A3101E: Assignment Requests (Call Re-establishment)
Meaning
The counters measure the ASS REQ messages received by the BSC from the MSC in the
assignment procedure. The message specifies the signaling type or service type. If the servicetype (speech or data) is different, the channel assigned by the MSC is also different.
When the channel assigned by the MSC is used for speech services, the assigned channel is of the
following types:
Full rate TCH channel Bm
Half rate TCH channel Lm
Full or Half rate TCH channel, Full rate preferred, changes between full rate and half rate allowedalso after first channel allocation as a result of the request
Full or half rate TCH channel, half rate preferred, changes between full rate and half rate allowedalso after first channel allocation as a result of the request
Full or half rate TCH channel, full rate preferred, changes between full rate and half rate not allowed
after first channel allocation as a result of the request
Full or half rate TCH channel, half rate preferred, changes between full rate and half rate not allowed
after first channel allocation as a result of the request
Full or half rate TCH channel, changes between full and half rate allowed also after first channel
allocation as a result of the request
Full or half rate TCH channel, changes between full and half rate not allowed after first channel
allocation as a result of the request
Huawei BSC supports all of the eight channel types.
When the channel assigned by the MSC is used for data services, the assigned channel is of the
following types:
Full rate TCH channel Bm
Half rate TCH channel Lm
Full or half rate TCH channel, full rate preferred, changes between full rate and half rate allowed
also after first channel allocation as a result of the request
Full or half rate TCH channel, half rate preferred, changes between full rate and half rate allowedalso after first channel allocation as a result of the request
Full or half rate TCH channel, full rate preferred, changes between full rate and half rate not allowed
after first channel allocation as a result of the request
Full or Half rate TCH channel. Half rate preferred, changes between full rate and half rate not
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allowed after first channel allocation as a result of the request
Full rate TCH channels in a multislot configuration, changes by the BSS of the number of TCHs andif applicable the used radio interface rate per channel allowed after first channel allocation as a result
of the request
Full rate TCH channels in a multislot configuration, changes by the BSS of the number of TCHs or
the used radio interface rate per channel not allowed after first channel allocation as a result of therequest
Huawei BSC supports the first six channel types.
Trigger Point
In the immediate assignment procedure, the BSS assigns a signaling channel to an MS. After
the RR connection between the MS and the BSS is established, the MS establishes the MMand the CC connections with the MSC through the signaling channel. Based on the CC
connection request from the MS, the MSC assigns terrestrial resources to the MS and
specifies available channel types in an ASS REQ message.
The measurement is triggered when the BSC receives an ASS REQ message from the MSC,as shown in Figure 12-5 (A). The measurement is based on the channel type and the access
cause carried in the message.
Figure 12-5 Trigger point of the counters of Assignment Requests per Cell
BTS BSCMS
A
IMM ASS CMD
CHAN REQ
CHAN RQD
CHAN ACTIV
CHAN ACTIV ACK
EST IND
CR(CMP L3 INFO)
CC
CM SERV ACP
MSC
SETUP
CALL PROCEEDING
ASS REQ
SABM
UA
Formula
None.
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12.9.3 Assignment Commands per Cell
Counter
Table 12-21 lists the counters of Assignment Commands per Cell.
Table 12-21 Counters of Assignment Commands per Cell
Number Counter
1 A3117A: Assignment Commands (MOC) (TCHF) (Excluding Directed Retry)
2 A3117C: Assignment Commands (MTC) (TCHF) (Excluding Directed Retry)
3 A3117D: Assignment Commands (Emergency Call) (TCHF) (ExcludingDirected Retry)
4 A3117E: Assignment Commands (Call Re-establishment) (TCHF) (ExcludingDirected Retry)
5 A3118A: Assignment Commands (MOC) (TCHH) (Excluding Directed Retry)
6 A3118C: Assignment Commands (MTC) (TCHH) (Excluding Directed Retry)
7 A3118D: Assignment Commands (Emergency Call) (TCHH) (ExcludingDirected Retry)
8 A3118E: Assignment Commands (Call Re-establishment) (TCHH) (ExcludingDirected Retry)
Meaning
This counter measures the number of times the BSC sends an ASS CMD message to an MS.
Trigger Point
In the assignment procedure, the BSC assigns a TCH to an MS (In the signaling traffic
assignment, the BSC returns an assignment complete message to the MSC and assigns nosignaling channel). After the channel is activated, the BSC sends an ASS CMD message to the
MSC.
As shown in Figure 12-6 (B), the measurement is triggered when the BSC sends an ASSCMD message to the MSC. The measurement is based on channel types and call accesscauses.
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Figure 12-6 Trigger Point of the counters of Assignment Commands per Cell
BTS BSCMS MSC
B
CHAN ACTIV
CHAN ACTIV ACK
ASS REQ
ASS CMD
Formula
None.
12.9.4 Completed Assignments per Cell
Counter
Table 12-22 lists the counters of Completed Assignments per Cell.
Table 12-22 Counters of Completed Assignments per Cell
Number Counter
1 A3167A: Speech Version 1 Completed Assignments (Excluding DirectedRetry) (TCHF)
2 A3167B: Speech Version 2 Completed Assignments (Excluding DirectedRetry) (TCHF)
3 A3167C: Speech Version 3 Completed Assignments (Excluding Directed
Retry) (TCHF)
4 A3168A: Speech Version 1 Completed Assignments (Excluding Directed
Retry) (TCHH)
5 A3168B: Speech Version 2 Completed Assignments (Excluding DirectedRetry) (TCHH)
6 A3168C: Speech Version 3 Completed Assignments (Excluding DirectedRetry) (TCHH)
Meaning
The counters measure the following:
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Number of times the MS sends an ASS CMP message to the BSC in the assignment procedure
Number of times the calls use a certain speech version when the MS sends an ASS CMPmessage to the BSC in the assignment procedure
Number of times the MS sends an HO CMP message to the BSC in the directed retry procedure
Trigger Point
The assignment procedure is initiated after the BSC receives an ASS REQ message from the
MSC. The BSC sends an ASS CMD message to the MS. If a full rate TCH or half rate TCH is
successfully assigned to the MS during the first assignment, the MS reports an ASS CMPmessage to the BSC. The BSC receives this message and forwards it to the MSC.
As shown in Figure 12-7 (C), the measurement of completed assignments (first assignment of
a TCHF or a TCHH) is triggered when the BSC receives an ASS CMP message.
Figure 12-7 Trigger points of the counters of Completed Assignments per Cell
BTS BSCMS
ASS CMD
ASS REQ
CHAN ACTIV
CHAN ACTIV ACK
EST IND
MSC
ASS CMP
SABM
UA
ASS CMP
When the BSC receives an ASS REQ message from the MSC, it initiates an assignment
procedure. If the first assignment fails, the MS sends an ASS FAIL message to the BSC andthe BSC initiates the re-assignment procedure. If a full rate TCH or half rate TCH is
successfully assigned to the MS, the MS sends an ASS CMP message to the BSC. Themeasurement of completed assignments (re-assignment of a TCHF or a TCHH) is triggered
when the BSC receives the ASS CMP message. The BSC sends the ASS CMP message to theMSC at the same time.
Formula
None.
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12.9.5 Failed Assignments per Cell
Counter
Table 12-23 lists the counters of Failed Assignments per Cell.
Table 12-23 Counters of Failed Assignments per Cell
Number Counter
1 A3127A: Failed Assignments (MOC) (TCHF) (Excluding Directed Retry)
2 A3127C: Failed Assignments (MTC) (TCHF) (Excluding Directed Retry)
3 A3127D: Failed Assignments (Emergency Call) (TCHF) (ExcludingDirected Retry)
4 A3127E: Failed Assignments (Call Re-establishment) (TCHF) (ExcludingDirected Retry)
5 A3128A: Failed Assignments (MOC) (TCHH) (Excluding Directed Retry)
6 A3128C: Failed Assignments (MTC) (TCHH) (Excluding Directed Retry)
7 A3128D: Failed Assignments (Emergency Call) (TCHH) (ExcludingDirected Retry)
8 A3128E: Failed Assignments (Call Re-establishment) (TCHH) (ExcludingDirected Retry)
9 A312Aa: Failed Assignments (MOC) (Including Directed Retry)
10 A312Ca: Failed Assignments (MTC) (Including Directed Retry)
11 A312Da: Failed Assignments (Emergency Call) (Including Directed Retry)
12 A312Ea: Failed Assignments (Call Re-establishment) (Including DirectedRetry)
13 A312A: Failed Assignments (Signaling Channel)
14 A3129I: Failed Assignments (Invalid State)
15 A3129J: Failed Assignments (Invalid Message)
16 A3129E: Failed Assignments (CIC Unavailable)
17 A3129F: Failed Assignments (CIC Allocated)
18 A3129G: Failed Assignments (A-Interface Failure)
19 A3129H: Failed Assignments (Clear Commands Sent by MSC)
20 A312A: Failed Assignments (First Assignment, Channel Unavailable inAssignment Procedure)
21 A3129C: Failed Assignments (First Assignment, Assignment Timed Out)
22 A312K: Failed Assignments (First Assignment, Channel Unavailable in
Directed Retry Procedure)
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Number Counter
23 A3129O: Failed Assignments (First Assignment, Directed Retry Timed Out)
24 A3129B: Failed Assignments (First Assignment, Terrestrial Resource
Request Failed)
25 A312L: Failed Assignments (Reconnection to Old Channels, ChannelUnavailable in Assignment)
26 A3129D: Failed Assignments (Reconnection to Old Channels, Reconnectionto Old Channel in Assignment)
27 A3129P: Failed Assignments (Reconnection to Old Channels, Timer Expiredin Assignment)
28 A312M: Failed Assignments (Reconnection to Old Channels, ChannelUnavailable in Directed Retry)
29 A3129R: Failed Assignments (Reconnection to Old Channels, Reconnectionto Old Channel in Directed Retry)
30 A3129Q: Failed Assignments (Reconnection to Old Channels, Timer Expiredin Directed Retry)
31 A3129N: Failed Assignments (Reconnection to Old Channels, TerrestrialResource Request Failed)
Meaning
The counters measure the number of failed assignments due to different causes.
In the assignment procedure, the MSC sends an ASS REQ message to the BSS. The BSS
selects a traffic channel or signaling channel. The assignment may fail due to various causes.
An assignment may fail due to any of the following causes:
The BSS detects that there are no traffic channels or signaling channels available and sends an ASSFAIL message to the MSC.
The MS sends an ASS FAIL message to the BSS directly.
No ASS CMP message is received within scheduled time after the BSS receives an ASS REQ
message from the MSC.
The BSS determines that the message is in invalid state.
The BSS receives an invalid message.
The request for terrestrial resources fails.
The CIC is unavailable or is already allocated.
A failure occurs on the A interface.
The MSC sends a clear command.
Trigger Point
If the MSC receives no ASS CMP message after sending an ASS REQ message to the BSS,
the measurement of Failed Assignments per Cell is triggered. The BSS sends an ASS FAIL
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message to the MSC. The measurement is based on the failure cause, procedure, and assignedchannel type.
In the assignment procedure (including or excluding directed retry), the related
measurement is triggered when the assignment procedure fails. The measurement is
based on the access cause and the assigned channel type. In the assignment procedure, the measurement of Failed Assignments (Invalid State) is
triggered when the BSC detects that the status of the received message does not matchthe current procedure.
In the assignment procedure, the related measurement is triggered when the BSC detects
that errors occur in the decoding of the received ASS REQ message. The errors may beof the channel type, CIC, and layer 3 header information.
After the BSC receives an ASS REQ message from the MSC, the measurement of Failed
Assignments (First Assignment, Terrestrial Resource Request Failed) is triggered whenthe BSC fails to request the terrestrial resources specified in the message.
In the assignment procedure, the related measurement is triggered when the BSC detects
that the CIC carried in the received ASS REQ message is unavailable or is alreadyallocated.
In the assignment procedure after the A interface link is established, the MSC sends anASS REQ message to the BSC. The measurement of Failed Assignments (A-Interface
Failure) is triggered when the MSC sends a CLEAR CMD message or a DISCONNECTmessage to the BSC because errors occur on the A interface.
In the assignment procedure, the MSC sends an ASS REQ message to the BSC. Themeasurement of Failed Assignments (Clear Commands Sent by MSC) is triggered when
the MSC sends a CLEAR CMD message before the BSC responds to the ASS REQmessage.
In the first assignment, directed retry, re-assignment, or re-assignment directed retry
procedure, the related measurement is triggered when the BSC detects that there are noavailable channel resources.
In the first assignment or the directed retry procedure, the BSC sends an ASS CMDmessage, and then triggers an assignment timer. The related measurement is triggeredwhen the timer expires.
In the assignment procedure, the BSC receives an ASS REQ message from the MSC. Ifthe first assignment fails, the MS reconnects to the old channel and sends an ASS FAIL
message to the BSC. The BSC then initiates the two procedures described previously andthe measurement is triggered when the assignment fails.
Formula
None.
12.9.6 Mode Modify Commands per Cell
Counter
Table 12-24 lists the counters of Mode Modify Commands per Cell.
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Table 12-24 Counters of Mode Modify Commands per Cell
Number Counter
1 A3147A: Mode Modify Commands (MOC) (TCHF)
2 A3147C: Mode Modify Commands (MTC) (TCHF)
3 A3147D: Mode Modify Commands (Emergency Call) (TCHF)
4 A3147E: Mode Modify Commands (Call Re-establishment) (TCHF)
5 A3148A: Mode Modify Commands (MOC) (TCHH)
6 A3148C: Mode Modify Commands (MTC) (TCHH)
7 A3148E: Mode Modify Commands (Call Re-establishment) (TCHH)
Meaning
In the immediate assignment procedure, if there are no idle SDCCHs but idle TCHs to be
assigned and if the immediate assignment of TCHs is allowed, the assigned full rate or half
rate TCH is used as a signaling channel. There is no need to assign a TCH during theassignment. The assigned full rate or half rate TCH is converted to a speech channel through aMode Modify procedure.
The counters measure the number of times the BSC sends a CHAN MODE MODIFYmessage to the MS after receiving the MODE MODIFY ACK message from the BTS.
Together with Completed Mode Modify Procedures (TCH), the counters can be used to
calculate the success rate of Mode Modify procedures.
Trigger Point
As shown in Figure 12-8 (E1), after receiving the ASS REQ message from the MSC, the BSC
checks the CHANNEL TYPE carried in the message and initiates the Mode Modify procedureif the CHANNEL TYPE and the type of the channel assigned in the assignment procedure
meet either of the following conditions:
Same type of channel rate, different speech data indications
Same type of channel rate and speech data indication, different speech coding algorithmsor data transparent transmission indications
If the Mode Modify procedure is performed in the assignment procedure, the BSC sends a
MODE MODIFY message to the BTS. After receiving a MODE MODIFY ACK messagefrom the BTS, the BSC sends a CHAN MODE MODIFY message to the MS.
The measurement is triggered when the BSC sends a CHAN MODE MODIFY message to the
MS.
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Figure 12-8 Trigger points of the counters of Mode Modify Commands per Cell
BTS BSCMS
E2
ASS REQ
MODE MODIFY
MSC
ASS CMP
E1
MODE MODIFY ACK
CHANMODE MODIFY
CHANMODE MODIFY ACK
Formula
None.
12.9.7 Failed Mode Modify Attempts per Cell
Counter
Table 12-25 lists the counters of Failed Mode Modify Attempts per Cell.
Table 12-25 Counters of Failed Mode Modify Attempts per Cell
Number Counter
1 A3157A: Failed Mode Modify Attempts (MOC) (TCHF)
2 A3157C: Failed Mode Modify Attempts (MTC) (TCHF)
3 A3157D: Failed Mode Modify Attempts (Emergency Call) (TCHF)
4 A3157E: Failed Mode Modify Attempts (Call Re-establishment) (TCHF)
5 A3158A: Failed Mode Modify Attempts (MOC) (TCHH)
6 A3158C: Failed Mode Modify Attempts (MTC) (TCHH)
7 A3158E: Failed Mode Modify Attempts (Call Re-establishment) (TCHH)
8 A3159E: Failed Mode Modify Attempts (CIC Unavailable)
9 A3159F: Failed Mode Modify Attempts (CIC Allocated)
10 A3159B: Failed Mode Modify Attempts (Terrestrial Resource Request Failed)
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Number Counter
11 A3159G: Failed Mode Modify Attempts (A-Interface Failure)
12 A3159H: Failed Mode Modify Attempts (Clear Commands Sent by MSC)
13 A3159C: Failed Mode Modify Attempts (Timer Expired)
Meaning
The counters measure the number of times the assignment fails after the BSC sends a MODE
MODIFY message to the MS.
Trigger Point
If the Mode Modify procedure is performed in the assignment procedure but the TCHassignment fails due to various causes, the measurement of Failed Mode Modify Attempts per
Cell is triggered.
As shown in Figure 12-9 (F), after the BSC receives an ASS REQ message from theMSC, the measurement of Failed Mode Modify Attempts (Terrestrial Resource RequestFailed) is triggered when the request for terrestrial resources fails.
As shown in Figure 12-9 (G), after the BSC receives an ASS REQ message from theMSC in the Mode Modify procedure, the related measurement is triggered when the BSCdetects that the CIC is unavailable or is already allocated.
After the A interface link is established, the MSC sends an ASS REQ message to the
BSC. In the Mode Modify procedure, the measurement of Failed Mode Modify Attempts
(A-Interface Failure) is triggered when the MSC sends a CLEAR CMD message or aDISCONNECT message to the BSC because errors occur on the A interface.
In the Mode Modify procedure, the MSC sends an ASS REQ message to the BSC. The
measurement of Failed Mode Modify Attempts (Clear Commands Sent by MSC) istriggered when the MSC sends a CLEAR CMD message before the BSC responds to theASS REQ message.
As shown in Figure 12-9 (H), the BSC sends a CHAN MODE MODIFY message in theMode Modify procedure, and then triggers an assignment timer. The related
measurement is triggered when the BSC receives a CHAN MODE MODIFY NACKmessage or when the timer expires.
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Figure 12-9 Trigger points of the counters of Failed Mode Modify Attempts per Cell
BTS BSCMS
H
ASS REQ
MODE MODIFY
MSC
ASS FAIL
G
MODE MODIFY ACK
CHAN MODE MODIFY
CHAN MODE MODIFY NACK
F
(MODE MODIFY NACK)
Formula
None.
12.9.8 Assignment Procedure Analyzed Measurement per Cell
CounterTable 12-26 lists the counters of Assignment Procedure Analyzed Measurement per Cell.
Table 12-26 Counters of Assignment Procedure Analyzed Measurement per Cell
Number Counter
1 CA310: Assignment Requests
2 CA313: Successful Assignments
3 RCA313: Success Rate of TCH Assignment
4 CA311: Assignment Commands
5 CA314: Mode Modify Commands
6 CA316: Completed Assignments (Um Interface)
7 CA312: Failed Assignments (Channel Unavailable)
Meaning
None.
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Trigger Point
None.
FormulaAssignment Requests =
[Assignment Requests (Signaling Channel)] +
[Assignment Requests (TCHF Only)] +
[Assignment Requests (TCHH Only)] +
[Assignment Requests (TCHF Preferred, Channel Type Unchangeable)] +
[Assignment Requests (TCHH Preferred, Channel Type Unchangeable)] +
[Assignment Requests (TCHF or TCHH, Channel Type Unchangeable)] +
[Assignment Requests (TCHF Preferred, Channel Type Changeable)] +
[Assignment Requests (TCHH Preferred, Channel Type Changeable)] +
[Assignment Requests (TCHF or TCHH, Channel Type Changeable)]
Successful Assignments =
[Assignment Requests]-
([Failed Assignments (Signaling Channel)] +
[Failed Assignments (MOC) (Including Directed Retry)] +
[Failed Assignments (MTC) (Including Directed Retry)] +
[Failed Assignments (Emergency Call) (Including Directed Retry)] +
[Failed Assignments (Call Re-establishment) (Including Directed Retry)] +
[Failed Mode Modify Attempts (MOC) (TCHF)] +
[Failed Mode Modify Attempts (MTC) (TCHF)] +
[Failed Mode Modify Attempts (Emergency Call) (TCHF)] +
[Failed Mode Modify Attempts (Call Re-establishment) (TCHF)] +
[Failed Mode Modify Attempts (MOC) (TCHH)] +
[Failed Mode Modify Attempts (MTC) (TCHH)] +
[Failed Mode Modify Attempts (Call Re-establishment) (TCHH)])
Success Rate of TCH Assignment =
[Successful Assignments]*{100}/[Assignment Requests]
Assignment Commands =
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[Assignment Commands (MOC) (TCHF) (Excluding Directed Retry)] +
[Assignment Commands (MTC) (TCHF) (Excluding Directed Retry)] +
[Assignment Commands (Emergency Call) (TCHF) (Excluding Directed Retry)] +
[Assignment Commands (Call Re-establishment) (TCHF) (Excluding Directed Retry)] +
[Assignment Commands (MOC) (TCHH) (Excluding Directed Retry)] +
[Assignment Commands (MTC) (TCHH) (Excluding Directed Retry)] +
[Assignment Commands (Emergency Call) (TCHH) (Excluding Directed Retry)] +
[Assignment Commands (Call Re-establishment) (TCHH) (Excluding Directed Retry)]
Mode Modify Commands =
[Mode Modify Commands (MOC) (TCHF)] +[Mode Modify Commands (MTC) (TCHF)] +
[Mode Modify Commands (Emergency Call) (TCHF)] +
[Mode Modify Commands (Call Re-establishment) (TCHF)] +
[Mode Modify Commands (MOC) (TCHH)] +
[Mode Modify Commands (MTC) (TCHH)] +
[Mode Modify Commands (Emergency Call) (TCHH)] +
[Mode Modify Commands (Call Re-establishment) (TCHH)]
Completed Assignments (Um Interface) =
[Speech Version 1 Completed Assignments (Excluding Directed Retry) (TCHF)] +
[Speech Version 2 Completed Assignments (Excluding Directed Retry) (TCHF)] +
[Speech Version 3 Completed Assignments (Excluding Directed Retry) (TCHF)] +
[Speech Version 1 Completed Assignments (Excluding Directed Retry) (TCHH)] +
[Speech Version 2 Completed Assignments (Excluding Directed Retry) (TCHH)] +
[Speech Version 3 Completed Assignments (Excluding Directed Retry) (TCHH)]
Failed Assignments (Channel Unavailable) =
[Failed Assignments (First Assignment, Channel Unavailable in Assignment Procedure)] +
[Failed Assignments (First Assignment, Channel Unavailable in Directed Retry Procedure)] +
[Failed Assignments (Reconnection to Old Channels, Channel Unavailable in Assignment)] +
[Failed Assignments (Reconnection to Old Channels, Channel Unavailable in Directed Retry)]
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12.10 Intra-Cell Handover Measurement per Cell
12.10.1 Overview
After seizing a dedicated channel, an MS sends the BSC measurement reports periodically.After receiving the measurement reports, the BSC uses the handover algorithm to decidewhether a handover is required or not based on the measurement reports. If a handover is
required and the source cell (current cell) is also the target cell, an intra-cell handover isinitiated.
The Intra-cell handover procedure is as follows:
Step 1 The BSC sends a CHAN ACTIV message to the BTS where the target cell is located. Thismessage is used to activate the specified channel in the target cell.
Step 2 After receiving a CHAN ACTIV ACK message, the BSC requests for channel resources. If
the request succeeds, the BSC sends the MS an HO CMD message, requesting the MS to
initiate a handover from the source cell to the target cell.
Step 3 The MS sends the target BTS a HO ACC message to attempt to access a new cell.
Step 4 The target BTS forwards this message through an HO DETECT message to the BSC and
sends a PHY INFO message to the MS.
Step 5 The MS sends a FIRST SABM frame to the target BTS and the target BTS sends an EST INDmessage to the BSC, indicating that the MS has successfully accessed the target cell. The MSalso sends an HO CMP message to the BSC.
Step 6 The BSC sends an HO PERFORMED message to the MSC.
----End
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Figure 12-10 Intra-cell handover procedure
BTS1(CELLO) BSCMS
PHY INFO
HO DETECT
MS MSCBTS1(CELLO)
A
B
CHAN ACTIV
HO ACC
FIRST SABM
EST IND
CHAN ACTIV
ACKHO CMD
MR FROM MS
HO CMP
HO PERFORMED
A: Intra-cell handover request
B: Intra-cell handover command
Table 12-27 lists the counter classification of Intra-Cell Handover Requests per Cell.
Table 12-27 Counter classification of Intra-Cell Handover Requests per Cell
Counter Classification Section
Intra-Cell Handover Requests per Cell 12.10.2
Intra-Cell Handover Commands per Cell 12.10.3
Failed Intra-Cell Handovers per Cell 12.10.4
Intra-Cell AMR Handover per Cell 12.10.5
Intra-Cell Handover Detection Messages Received by BSC per Cell 12.10.6
Intra-Cell Handover Measurement per Cell 12.10.7
12.10.2 Intra-Cell Handover Requests per Cell
Counter
Table 12-28 lists the counters of Internal Intra-Cell Handover Requests per Cell.
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Table 12-28 Counters of Internal Intra-Cell Handover Requests per Cell
Number Counter
1 H3000: Internal Intra-Cell Handover Requests (SDCCH)
2 H3009: Internal Intra-Cell Handover Requests (TCH)
3 H3003A: Internal Intra-Cell Handover Requests (Dynamic Conversion, TCHF-TCHH)
4 H3003B: Internal Intra-Cell Handover Requests (Dynamic Conversion, TCHH-
TCHF)
5 H3004A: Internal Intra-Cell Handover Requests (Dynamic Conversion, TCH-
SDCCH)
6 H3004B: Internal Intra-Cell Handover Requests (Dynamic Conversion,
SDCCH-TCH)
7 H3002: Internal Intra-Cell Handover Requests (Underlay to Overlay)
8 H3001: Internal Intra-Cell Handover Requests (Overlay to Underlay)
9 CH3036A: Internal Intra-Cell Handover Requests due to Uplink Interference
10 CH3036B: Internal Intra-Cell Handover Requests due to Downlink Interference
Meaning
The counters measure the number of intra-cell handover requests based on handover types andchannel types.
The counters show the frequency of intra-cell handovers in the current cell. Along with Intra-
Cell Handover Commands per Cell and Failed Intra-Cell Handovers per Cell, the counters
show the performance of intra-cell handovers.
The intra-cell handover is of the following types:
Intra-cell handover in normal conditions
Intra-cell handover caused by dynamic channel conversion
Intra-cell handover in concentric cells
The channel involved in the measurement is of the following types:
SDCCH
TCH
The dynamic channel conversion is of the following types:
TCHF to TCHH (TCHF-TCHH)
TCHH to TCHF (TCHH-TCHF)
TCH to SDCCH (TCH-SDCCH)
SDCCH to TCH (SDCCH-TCH)
The concentric cell handover is of the following types:
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Underlaid subcell to overlaid subcell (Underlay to Overlay)
Overlaid subcell to underlaid subcell (Overlay to Underlay)
For intra-cell handovers caused by uplink and downlink intereference, counters CH3036A:
Internal Intra-Cell Handover Requests due to Uplink Interference and CH3036B: Internal
Intra-Cell Handover Requests due to Downlink Interferenc are measured respectively.
In the internal handover procedure, the BSC selects the idle neighbor cell (the neighbor cell in the same
BSC but different BM is assumed to be idle) as the preferred target cell. If all the neighbor cells of thesource cell are busy, the first cell on the list of candidate neighbor cells is selected. The handover is
performed even if this cell is busy. If the selected neighbor cell is also the source cell, the related counteris measured.
In the concentric cell handover (also a kind of intra-cell handover), no handover is performed if thetarget underlaid subcell or overlaid subcell is congested. No counters will be measured.
Trigger Point
As shown in Figure 12-10 (A), the measurement is triggered when the BSC decides that anintra-cell handover is required based on measurement reports. The measurement is based on
the handover type and the channel type.
Formula
None.
12.10.3 Intra-Cell Handover Commands per Cell
Counter
Table 12-29 lists the counters of Intra-Cell Handover Commands per Cell.
Table 12-29 Counters of Intra-Cell Handover Commands per Cell
Number Counter
1 H3010: Internal Intra-Cell Handover Commands (SDCCH)
2 H3017: Internal Intra-Cell Handover Commands (TCHF)
3 H3018: Internal Intra-Cell Handover Commands (TCHH)
4 H3013A: Internal Intra-Cell Handover Commands (Dynamic Conversion,
TCHF-TCHH)
5 H3013B: Internal Intra-Cell Handover Commands (Dynamic Conversion,
TCHH-TCHF)
6 H3014A: Internal Intra-Cell Handover Commands (Dynamic Conversion,TCH-SDCCH)
7 H3014B: Internal Intra-Cell Handover Commands (Dynamic Conversion,
SDCCH-TCH)
8 H3012: Internal Intra-Cell Handover Commands (Underlay to Overlay)
9 H3011: Internal Intra-Cell Handover Commands (Overlay to Underlay)
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Meaning
The counters measure the number of intra-cell handover commands based on handover types
and channel types.
Along with Intra-Cell Handover Requests per Cell and Failed Intra-Cell Handovers per Cell,the counters show the performance of intra-cell handovers.
The intra-cell handover is of the following types:
Intra-cell handover requests in normal conditions
Intra-cell handover requests caused by dynamic channel conversion
Intra-cell handover requests in concentric cells
The channel involved in the measurement is of the following types:
SDCCH
TCHF
TCHH
The dynamic channel conversion is of the following types:
TCHF to TCHH (TCHF-TCHH)
TCHH to TCHF (TCHH-TCHF)
TCH to SDCCH (TCH-SDCCH)
SDCCH to TCH (SDCCH-TCH)
The concentric cell handover is of the following types:
Underlaid subcell to overlaid subcell (Underlay to Overlay)
Overlaid subcell to underlaid subcell (Overlay to Underlay)
Trigger Point
As shown in Figure 12-10 (B), the measurement is triggered when the BSC sends an HO
CMD message through the source cell to the MS. The measurement is based on the handovertype and the channel type.
Formula
None.
12.10.4 Failed Intra-Cell Handovers per Cell
Counter
Table 12-30 lists the counters of Failed Intra-Cell Handovers per Cell.
Table 12-30 Counters of Failed Intra-Cell Handovers per Cell
Number Counter
1 H3020: Failed Internal Intra-Cell Handovers (SDCCH)
2 H3029: Failed Internal Intra-Cell Handovers (TCH)
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Number Counter
3 H3020A: Failed Internal Intra-Cell Handovers (Channel Unavailable)
(SDCCH)
4 H3029A: Failed Internal Intra-Cell Handovers (Channel Unavailable) (TCH)
5 H302B: Failed Internal Intra-Cell Handovers (Terrestrial Resource RequestFailed)
6 H302G: Failed Internal Intra-Cell Handovers (A-Interface Failure)
7 H3020C: Failed Internal Intra-Cell Handovers (Timer Expired) (SDCCH)
8 H3027Cb: Failed Internal Intra-Cell Handovers (Timer Expired) (TCHF)
(Signaling Channel)
9 H3028Cb: Failed Internal Intra-Cell Handovers (Timer Expired) (TCHH)
(Signaling Channel)
10 H3027Ca: Failed Internal Intra-Cell Handovers (Timer Expired) (TCHF)(Traffic Channel)
11 H3028Ca: Failed Internal Intra-Cell Handovers (Timer Expired) (TCHH)(Traffic Channel)
12 H302Da: Failed Internal Intra-Cell Handovers (Reconnection to Old Channels)
(Abnormal Release, Unspecified)
13 H302Db: Failed Internal Intra-Cell Handovers (Reconnection to Old Channels)(Abnormal Release, Channel Unacceptable)
14 H302Dc: Failed Internal Intra-Cell Handovers (Reconnection to Old Channels)(Abnormal Release, Timer Expired)
15 H302Dd: Failed Internal Intra-Cell Handovers (Reconnection to Old Channels)(Abnormal Release, No Activity on the Radio Path)
16 H302De: Failed Internal Intra-Cell Handovers (Reconnection to Old Channels)
(Preemptive Release)
17 H302Df: Failed Internal Intra-Cell Handovers (Reconnection to Old Channels)(Handover Failed, Timing Advance out of Range)
18 H302Dg: Failed Internal Intra-Cell Handovers (Reconnection to Old Channels)(Channel Mode Unavailable)
19 H302Dh: Failed Internal Intra-Cell Handovers (Reconnection to Old Channels)(Frequency Unavailable)
20 H302Di: Failed Internal Intra-Cell Handovers (Reconnection to Old Channels)(Call Already Cleared)
21 H302Dj: Failed Internal Intra-Cell Handovers (Reconnection to Old Channels)(Semantically Incorrect Message)
22 H302Dk: Failed Internal Intra-Cell Handovers (Reconnection to Old Channels)(Invalid Mandatory Information)
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Number Counter
23 H302Dl: Failed Internal Intra-Cell Handovers (Reconnection to Old Channels)
(Message Type Non-existent or Not Implemented)
24 H302Dm: Failed Internal Intra-Cell Handovers (Reconnection to OldChannels) (Message Type Not Compatible with Protocol State)
25 H302Dn: Failed Internal Intra-Cell Handovers (Reconnection to Old Channels)(Conditional IE Error)
26 H302Do: Failed Internal Intra-Cell Handovers (Reconnection to Old Channels)
(No Cell Allocation Available)
27 H302Dp: Failed Internal Intra-Cell Handovers (Reconnection to Old Channels)(Protocol Error Unspecified)
28 H302Dq: Failed Internal Intra-Cell Handovers (Reconnection to Old Channels)
(Other Causes)
29 H3022A: Failed Internal Intra-Cell Handovers (Channel Unavailable)(Underlay to Overlay)
30 H3021A: Failed Internal Intra-Cell Handovers (Channel Unavailable) (Overlay
to Underlay)
31 H3022M: Failed Internal Intra-Cell Handovers (Other Causes) (Underlay toOverlay)
32 H3021M: Failed Internal Intra-Cell Handovers (Other Causes) (Overlay toUnderlay)
33 H3023A: Failed Internal Intra-Cell Handovers (Dynamic Conversion, TCHF-TCHH)
34 H3023B: Failed Internal Intra-Cell Handovers (Dynamic Conversion, TCHH-TCHF)
35 H3024A: Failed Internal Intra-Cell Handovers (Dynamic Conversion, TCH-SDCCH)
36 H3024B: Failed Internal Intra-Cell Handovers (Dynamic Conversion, SDCCH-TCH)
Meaning
The counters measure the number of failed intra-cell handovers based on handover types,channel types, and failure causes.
Along with Intra-Cell Handover Requests per Cell and Intra-Cell Handover Commands perCell, the counters show the performance of intra-cell handovers.
The intra-cell handover is of the following types:
Intra-cell handover requests in normal conditions
Intra-cell handover requests caused by dynamic channel conversion
Intra-cell handover requests in concentric cells
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The channel involved in the measurement is of the following types:
SDCCH
TCHF
TCHHThe failure causes of intra-cell handovers include the following:
Channel unavailable
Terrestrial resource request failed
A-interface failure
Clear commands sent by MSC
Timer expired
Reconnection to old channels
The dynamic channel conversion is of the following types:
TCHF to TCHH (TCHF-TCHH)
TCHH to TCHF (TCHH-TCHF)
TCH to SDCCH (TCH-SDCCH)
SDCCH to TCH (SDCCH-TCH)
The concentric cell handover is of the following types:
Underlaid subcell to overlaid subcell (Underlay to Overlay)
Overlaid subcell to underlaid subcell (Overlay to Underlay)
Trigger Point
Figure 12-11 shows the trigger points of the counters of Failed Intra-Cell Handovers per Cell.
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Figure 12-11 Trigger points of the counters of Failed Intra-Cell Handovers per Cell
BTS1(CELLO) BSCMS MS MSCBTS1(CELLO)
F
PHY INFO
HO DETECT
A
B
G
CHAN ACTIV
HO ACC
FIRST SABM
EST IND
CHAN
ACTIV ACK
HO CMD
MR FROM MS
TIME OUT
HO FAIL
HO CMP
HO PERFORMED
In the
intra-cell
handover
procedure
C
D
H
E
A: Failed Intra-Cell Handovers (Channel Unavailable)
B: Failed Intra-Cell Handovers (Terrestrial Resource Request Failed)
C: Failed Intra-Cell Handovers (A-Interface Failure)D: Failed Intra-Cell Handovers (Clear Commands Sent by MSC)
E: Failed Intra-Cell Handovers
F: Failed Intra-Cell Handovers (Timer Expired)
G: Failed Intra-Cell Handovers (Reconnection to Old Channels)
H: Failed Intra-Cell Handovers (Other Causes)
The trigger points of the counters are as follows:
Failed Intra-Cell Handovers
As shown in Figure 12-11, the measurement is triggered when the intra-cell handover
fails before the handover completion timer expires. The measurement is based on thechannel type.
The channel involved in the measurement is of the following types:
− SDCCH
− TCH
The dynamic channel conversion is of the following types:
− TCHF to TCHH (TCHF-TCHH)
− TCHH to TCHF (TCHH-TCHF)
− TCH to SDCCH (TCH-SDCCH)
− SDCCH to TCH (SDCCH-TCH)
Failed Intra-Cell Handovers (Channel Unavailable)
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As shown in Figure 12-11, the measurement is triggered when a channel request fails because the target cell has no channel available. The measurement is based on thehandover type and the channel type.
The intra-cell handover is of the following types:
− Intra-cell handover requests in normal conditions− Intra-cell handover requests in concentric cells.
The channel involved in the measurement is of the following types:
− SDCCH
− TCHF
− TCHH
The concentric cell handover is of the following types:
− Underlaid subcell to overlaid subcell (Underlay to Overlay)
− Overlaid subcell to underlaid subcell (Overlay to Underlay)
Failed Intra-Cell Handovers (Terrestrial Resource Request Failed)As shown in Figure 12-11, the measurement is triggered when the BSC net-drive fails.
Failed Intra-Cell Handovers (A-Interface Failure)
As shown in Figure 12-11, the measurement is triggered when the BSC receives an A-interface failure message before the MS sends an HO CMP message to the BSC.
Failed Intra-Cell Handovers (Clear Commands Sent by MSC)
As shown in Figure 12-11, the measurement is triggered when the BSC receives a CLRCMD message before the MS sends an HO CMP message to the BSC.
Failed Intra-Cell Handovers (Timer Expired)
As shown in Figure 12-11, the BSC sends an HO CMD message to the MS and starts a
timer to wait for an HO CMP message. The measurement is triggered when the timerexpires. The measurement is based on the channel type.
The channel involved in the measurement is of the following types:
− SDCCH
− TCHF
− TCHH
Failed Intra-Cell Handovers (Reconnection to Old Channels)
As shown in Figure 12-11, BSC sends an HO CMD message to the MS and starts a timer
to wait for an HO CMP message. Before the timer expires, the MS reconnects to the oldchannel and sends the BSC an HO FAIL message on the old channel. The measurement
is triggered when the BSC receives the HO FAIL message. The measurement is based on
the failure cause carried in the message.
The message carries any of the following failure causes:
Abnormal release, unspecified
Abnormal release, channel unacceptable
Abnormal release, timer expired
Abnormal release, no activity on the radio path
Preemptive release
Handover failed, timing advance out of range
Channel mode unavailable
Frequency unavailable
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Call already cleared
Semantically incorrect message
Invalid mandatory information
Message type non-existent or not implemented
Message type not compatible with protocol state
Conditional IE error
No cell allocation available
Protocol error unspecified
Other causes
Failed Intra-Cell Handovers (Concentric Cell)
As shown in Figure 12-11, after the BSC sends an HO CMD message to the MS, the
measurement is triggered when the BSC receives an HO FAIL message before receivingan HO CMP message from the MS. The HO FAIL message carries any cause except for
those described previously. The measurement is based on the handover direction
(underlaid subcell to overlaid subcell, overlaid subcell to underlaid subcell).
Formula
None.
12.10.5 Intra-Cell AMR Handover per Cell
Counter
Table 12-31 lists the counters of Intra-Cell AMR Handover per Cell.
Table 12-31 Counters of Intra-Cell AMR Handover per Cell
Number Counter
1 H3055A: Internal Intra-Cell Handovers Not Initiated (AMR) (TCHF-TCHH)
2 H3055B: Internal Intra-Cell Handovers Not Initiated (AMR) (TCHH-TCHF)
3 H3005A: Internal Intra-Cell Handover Requests (AMR) (TCHF-TCHH)
4 H3005B: Internal Intra-Cell Handover Requests (AMR) (TCHH-TCHF)
5 H3015A: Internal Intra-Cell Handover Commands (AMR) (TCHF-TCHH)
6 H3015B: Internal Intra-Cell Handover Commands (AMR) (TCHH-TCHF)
7 H3025A: Failed Internal Intra-Cell Handovers (AMR) (TCHF-TCHH)
8 H3025B: Failed Internal Intra-Cell Handovers (AMR) (TCHH-TCHF)
Meaning
For an Adaptive Multi-Rate (AMR) call, when the BSC decides that an intra-cell handover(TCHF to TCHH) is required based on the handover algorithm, the BSC ignores the handover
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indication and measures Internal Intra-Cell Handovers Not Initiated (AMR) (TCHF-TCHH) ifthe MSC does not allow the conversion of channel types.
For an AMR call, when the BSC decides that an intra-cell handover (TCHH to TCHF) is
required based on the handover algorithm, the BSC ignores the handover indication and
measures Internal Intra-Cell Handovers Not Initiated (AMR) (TCHH-TCHF) if the MSC doesnot allow the conversion of channel types.
For an AMR call, when the BSC decides that an intra-cell handover (TCHF to TCHH) isrequired based on the handover algorithm, the BSC measures Internal Intra-Cell HandoverRequests (AMR) (TCHF-TCHH) if the handover is allowed.
For an AMR call, when the BSC decides that an intra-cell handover (TCHH to TCHF) isrequired based on the handover algorithm, the BSC measures Internal Intra-Cell HandoverRequests (AMR) (TCHH-TCHF) if the handover is allowed.
For an AMR call, if the BSC decides that an intra-cell handover (TCHF to TCHH) is required based on the handover algorithm, the BSC measures Internal Intra-Cell Handover Commands
(AMR) (TCHF-TCHH) when the handover is initiated and a handover command is sent.For an AMR call, if the BSC decides that an intra-cell handover (TCHH to TCHF) is required based on the handover algorithm, the BSC measures Internal Intra-Cell Handover Commands
(AMR) (TCHH-TCHF) when the handover is initiated and a handover command is sent.
For an AMR call, if the BSC decides that an intra-cell handover (TCHF to TCHH) is required based on the handover algorithm, the BSC measures Failed Internal Intra-Cell Handovers
(AMR) (TCHF-TCHH) when the handover is initiated but the handover fails due to a certaincause.
For an AMR call, if the BSC decides that an intra-cell handover (TCHH to TCHF) is required
based on the handover algorithm, the BSC measures Failed Internal Intra-Cell Handovers(AMR) (TCHH-TCHF) when the handover is initiated but the handover fails due to a certain
cause.
The AMR is a kind of speech codec algorithm. It can improve the speech quality by adjusting theencoding rate based on the radio environment.
To control the call performance in a flexible way and to maximize the network capacity, the BSC needs
a handover algorithm as follows:
If an AMR call seizes a full rate channel and its RQI is always higher than the defined threshold ofthe handover from the TCHF to the TCHH in a period of time, the handover from the TCHF to the
TCHH is triggered.
If an AMR call seizes a half rate channel and its RQI is always lower than the defined threshold ofthe handover from the TCHH to the TCHF in a period of time, the handover from the TCHH to the
TCHF is triggered.
The algorithm is controlled by the switches of both the intra-cell handover permit and the intra-cell
full rate–half rate handover permit. Because the BTS reports the RQI for only AMR calls, the AMRhandover is used for only AMR calls.
Trigger Point
For the description of the trigger points of the counters, refer to the trigger points of the
common handovers.
Formula
None.
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12.10.6 Intra-Cell Handover Detection Messages Received by BSCper Cell
CounterTable 12-32 lists the counters of Intra-Cell Handover Detection Messages Received by BSC
per Cell.
Table 12-32 Counters of Intra-Cell Handover Detection Messages Received by BSC per Cell
Number Counter
1 H3040: Internal Intra-Cell Handover Detection Messages Received by BSC(SDCCH)
2 H3047: Internal Intra-Cell Handover Detection Messages Received by BSC
(TCHF)
3 H3048: Internal Intra-Cell Handover Detection Messages Received by BSC(TCHH)
Meaning
The counters measure the number of times the BSC receives from the BTS an HO DETECT
message in the target cell (current cell). The measurement is based on the channel type.
The channel type consists of SDCCH, TCHF, and TCHH.
Trigger Point
As shown in Figure 12-11, the measurement is triggered when the BSC receives an HO
DETECT message in the target cell (current cell). The measurement is based on the channeltype.
Formula
None.
12.10.7 Intra-Cell Handover Measurement per CellCounter
Table 12-33 lists the counters of Intra-Cell Handover Measurement per Cell.
Table 12-33 Counters of Intra-Cell Handover Measurement per Cell
Number Counter
1 CH300: Internal Intra-Cell Handover Requests
2 CH303: Successful Internal Intra-Cell Handovers
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Number Counter
3 TH303: Success Rate of Internal Intra-Cell Handover
4 TH3032: Success Rate of Internal Intra-Cell Handover (Underlay to Overlay)
5 TH3031: Success Rate of Internal Intra-Cell Handover (Overlay to Underlay)
6 CH301: Internal Intra-Cell Handover Commands
7 CH304: Internal Intra-Cell Handover Detection Messages Received by BSC
8 CH302: Failed Internal Intra-Cell Handovers
9 CH302A: Failed Internal Intra-Cell Handovers (Channel Unavailable)
10 CH302C: Failed Internal Intra-Cell Handovers (Timer Expiry)
11 CH302D: Failed Internal Intra-Cell Handovers (Reconnection to Old
Channels)
12 CH3022: Failed Internal Intra-Cell Handovers (Underlay to Overlay)
13 CH3021: Failed Internal Intra-Cell Handovers (Overlay to Underlay)
14 TH3033A: Success Rate of Internal Intra-Cell Handover (Dynamic
Conversion, TCHF-TCHH)
15 TH3033B: Success Rate of Internal Intra-Cell Handover (DynamicConversion, TCHH-TCHF)
16 TH3034A: Success Rate of Internal Intra-Cell Handover (Dynamic
Conversion, TCH-SDCCH)
17 TH3034B: Success Rate of Internal Intra-Cell Handover (Dynamic
Conversion, SDCCH-TCH)
18 TH3035A: Success Rate of Internal Intra-Cell Handover (AMR) (TCHF-
TCHH)
19 TH3035B: Success Rate of Internal Intra-Cell Handover (AMR) (TCHH-TCHF)
20 CH3032: Successful Internal Intra-Cell Handovers (Underlay to Overlay)
21 CH3031: Successful Internal Intra-Cell Handovers (Overlay to Underlay)
22 CH3033A: Successful Internal Intra-Cell Handovers (Dynamic Conversion,TCHF-TCHH)
23 CH3033B: Successful Internal Intra-Cell Handovers (Dynamic Conversion,TCHH-TCHF)
24 CH3034A: Successful Internal Intra-Cell Handovers (Dynamic Conversion,
TCH-SDCCH)
25 CH3034B: Successful Internal Intra-Cell Handovers (Dynamic Conversion,
SDCCH-TCH)
26 CH3035A: Successful Internal Intra-Cell Handovers (AMR) (TCHF-TCHH)
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Number Counter
27 CH3035B: Successful Internal Intra-Cell Handovers (AMR) (TCHH-TCHF)
Meaning
None.
Trigger Point
None.
Formula
Internal Intra-Cell Handover Requests =
[Internal Intra-Cell Handover Requests (SDCCH)] + [Internal Intra-Cell Handover Requests
(TCH)]
Successful Internal Intra-Cell Handovers =
[Internal Intra-Cell Handover Requests (SDCCH)] + [Internal Intra-Cell Handover Requests(TCH)]-[Failed Internal Intra-Cell Handovers (SDCCH)]-[Failed Internal Intra-Cell
Handovers (TCH)]
SUCCESS RATE OF INTERNAL INTRA-CELL HANDOVER =
[Successful Internal Intra-Cell Handovers]*{100}/[Internal Intra-Cell Handover Requests]
SUCCESS RATE OF INTERNAL INTRA-CELL HANDOVER (Underlay to Overlay) =
[Successful Internal Intra-Cell Handovers (Underlay to Overlay)]*{100}/[Internal Intra-Cell
Handover Requests (Underlay to Overlay)]
SUCCESS RATE OF INTERNAL INTRA-CELL HANDOVER (Overlay to Underlay) =
[Successful Internal Intra-Cell Handovers (Overlay to Underlay)]*{100}/[Internal Intra-Cell
Handover Requests (Overlay to Underlay)]
Internal Intra-Cell Handover Commands =
[Internal Intra-Cell Handover Commands (SDCCH)] +
[Internal Intra-Cell Handover Commands (TCHF)] +
[Internal Intra-Cell Handover Commands (TCHH)]
Internal Intra-Cell Handover Detection Messages Received by BSC =
[Internal Intra-Cell Handover Detection Messages Received by BSC (SDCCH)] +
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[Internal Intra-Cell Handover Detection Messages Received by BSC (TCHF)] +
[Internal Intra-Cell Handover Detection Messages Received by BSC (TCHH)]
Failed Internal Intra-Cell Handovers =
[Failed Internal Intra-Cell Handovers (SDCCH)] +
[Failed Internal Intra-Cell Handovers (TCH)]
Failed Internal Intra-Cell Handovers (Channel Unavailable) =
[Failed Internal Intra-Cell Handovers (Channel Unavailable) (SDCCH)] +
[Failed Internal Intra-Cell Handovers (Channel Unavailable) (TCH)]
Failed Internal Intra-Cell Handovers (Timer Expired) =
[Failed Internal Intra-Cell Handovers (Timer Expired) (SDCCH)] +
[Failed Internal Intra-Cell Handovers (Timer Expired) (TCHF) (Signaling Channel)] +
[Failed Internal Intra-Cell Handovers (Timer Expired) (TCHH) (Signaling Channel)] +
[Failed Internal Intra-Cell Handovers (Timer Expired) (TCHF) (Traffic Channel)] +
[Failed Internal Intra-Cell Handovers (Timer Expired) (TCHH) (Traffic Channel)]
Failed Internal Intra-Cell Handovers (Reconnection to Old Channels) =
[Failed Internal Intra-Cell Handovers (Reconnection to Old Channels) (Abnormal Release,
Unspecified)] +
[Failed Internal Intra-Cell Handovers (Reconnection to Old Channels) (Abnormal Release,Channel Unacceptable)] +
[Failed Internal Intra-Cell Handovers (Reconnection to Old Channels) (Abnormal Release,
Timer Expired)] +
[Failed Internal Intra-Cell Handovers (Reconnection to Old Channels) (Abnormal Release, No
Activity on the Radio Path)] +
[Failed Internal Intra-Cell Handovers (Reconnection to Old Channels) (Preemptive Release)]
+
[Failed Internal Intra-Cell Handovers (Reconnection to Old Channels) (Handover Failed,Timing Advance out of Range)] +
[Failed Internal Intra-Cell Handovers (Reconnection to Old Channels) (Channel ModeUnavailable)] +
[Failed Internal Intra-Cell Handovers (Reconnection to Old Channels) (Frequency
Unavailable)] +
[Failed Internal Intra-Cell Handovers (Reconnection to Old Channels) (Call Already Cleared)]
+
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[Failed Internal Intra-Cell Handovers (Reconnection to Old Channels) (Semantically IncorrectMessage)] +
[Failed Internal Intra-Cell Handovers (Reconnection to Old Channels) (Invalid Mandatory
Information)] +
[Failed Internal Intra-Cell Handovers (Reconnection to Old Channels) (Message Type Non-
existent or Not Implemented)] +
[Failed Internal Intra-Cell Handovers (Reconnection to Old Channels) (Message Type NotCompatible with Protocol State)] +
[Failed Internal Intra-Cell Handovers (Reconnection to Old Channels) (Conditional IE Error)]+
[Failed Internal Intra-Cell Handovers (Reconnection to Old Channels) (No Cell Allocation
Available)] +
[Failed Internal Intra-Cell Handovers (Reconnection to Old Channels) (Protocol Error
Unspecified)] +
[Failed Internal Intra-Cell Handovers (Reconnection to Old Channels) (Other Causes)]
Failed Internal Intra-Cell Handovers (Underlay to Overlay) =
[Failed Internal Intra-Cell Handovers (Channel Unavailable) (Underlay to Overlay)] +
[Failed Internal Intra-Cell Handovers (Other Causes) (Underlay to Overlay)]
Failed Internal Intra-Cell Handovers (Overlay to Underlay) =
[Failed Internal Intra-Cell Handovers (Channel Unavailable) (Overlay to Underlay)] +
[Failed Internal Intra-Cell Handovers (Other Causes) (Overlay to Underlay)]
Success Rate of Internal Intra-Cell Handover (Dynamic Conversion, TCHF-TCHH) =
[Successful Internal Intra-Cell Handovers (Dynamic Conversion, TCHF-
TCHH)]*{100}/[Internal Intra-Cell Handover Requests (Dynamic Conversion, TCHF-TCHH)]
Success Rate of Internal Intra-Cell Handover (Dynamic Conversion, TCHH-TCHF) =[Successful Internal Intra-Cell Handovers (Dynamic Conversion, TCHH-
TCHF)]*{100}/[Internal Intra-Cell Handover Requests (Dynamic Conversion, TCHH-TCHF)]
Success Rate of Internal Intra-Cell Handover (Dynamic Conversion, TCH-SDCCH) =
Successful Internal Intra-Cell Handovers (Dynamic Conversion, TCH-SDCCH)]*{100}/[Internal Intra-Cell Handover Requests (Dynamic Conversion, TCH-
SDCCH)]
Success Rate of Internal Intra-Cell Handover (Dynamic Conversion, SDCCH-TCH) =
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Performance Counter Reference 12 Call Measurement
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[Successful Internal Intra-Cell Handovers (Dynamic Conversion, SDCCH-TCH) ]*{100}/[ Internal Intra-Cell Handover Requests (Dynamic Conversion, SDCCH-TCH) ]
Success Rate of Internal Intra-Cell Handover (AMR) (TCHF-TCHH) =
[Successful Internal Intra-Cell Handovers (AMR) (TCHF-TCHH)]*{100}/[Internal Intra-CellHandover Requests (AMR) (TCHF-TCHH)]
Success Rate of Internal Intra-Cell Handover (AMR) (TCHH-TCHF) =
[Successful Internal Intra-Cell Handovers (AMR) (TCHH-TCHF)]*{100}/[Internal Intra-CellHandover Requests (AMR) (TCHH-TCHF)]
Successful Internal Intra-Cell Handovers (Underlay to Overlay) =
[Internal Intra-Cell Handover Requests (Underlay to Overlay)]-[Failed Internal Intra-CellHandovers (Channel Unavailable) (Underlay to Overlay)]-[Failed Internal Intra-Cell
Handovers (Other Causes) (Underlay to Overlay)]
Successful Internal Intra-Cell Handovers (Overlay to Underlay) =
[Internal Intra-Cell Handover Requests (Overlay to Underlay)]-[Failed Internal Intra-Cell
Handovers (Channel Unavailable) (Overlay to Underlay)]-[Failed Internal Intra-Cell
Handovers (Other Causes) (Overlay to Underlay)]
Successful Internal Intra-Cell Handovers (Dynamic Conversion, TCHF-TCHH) =
[Internal Intra-Cell Handover Requests (Dynamic Conversion, TCHF-TCHH)]- [Failed
Internal Intra-Cell Handovers (Dynamic Conversion, TCHF-TCHH) ]
Successful Internal Intra-Cell Handovers (Dynamic Conversion, TCHH-TCHF) =
[Internal Intra-Cell Handover Requests (Dynamic Conversion, TCHH-TCHF)]- [Failed
Internal Intra-Cell Handovers (TCHH-TCHF)]
Successful Internal Intra-Cell Handovers (Dynamic Conversion, TCH-SDCCH) =
[Internal Intra-Cell Handover Requests (Dynamic Conversion, TCH-SDCCH) ]-[ Failed
Internal Intra-Cell Handovers (Dynamic Conversion, TCH-SDCCH) ]
Successful Internal Intra-Cell Handovers (Dynamic Conversion, SDCCH-TCH) =
[Internal Intra-Cell Handover Requests (Dynamic Conversion, SDCCH-TCH)]- [FailedInternal Intra-Cell Handovers (Dynamic Conversion, SDCCH-TCH) ]
Successful Internal Intra-Cell Handovers (AMR) (TCHF-TCHH) =
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[Internal Intra-Cell Handover Requests (AMR) (TCHF-TCHH)]- [Failed Internal Intra-CellHandovers (AMR) (TCHF-TCHH)]
Successful Internal Intra-Cell Handovers (AMR) (TCHH-TCHF) =[Internal Intra-Cell Handover Requests (AMR) (TCHH-TCHF)]- [Failed Internal Intra-Cell
Handovers (AMR) (TCHH-TCHF)]
12.11 Incoming Internal Inter-Cell HandoverMeasurement per Cell
12.11.1 Overview
After an MS seizes a dedicated channel, it sends measurement reports to the BSC periodically.After receiving the measurement reports, the BSC uses the handover algorithm to decide
whether a handover is required or not on the basis of the factors such as the cell load,concentric cell, signal interference, and measurement reports. If a handover is required and
the source cell (current cell) and the target cell are two cells in a BSC, an internal inter-cellhandover is initiated.
The internal inter-cell handover procedure is as follows:
Step 1 The BSC sends a CHAN ACTIV message to the BTS where the target cell is located. Thismessage is used to activate the specified channel in the target cell.
Step 2 After receiving a CHAN ACTIV ACK message, the BSC requests for channel resources. If
the request succeeds, the BSC sends the MS an HO CMD message, requesting the MSthrough the source cell to initiate a handover from the source cell to the target cell.
Step 3 The MS sends the target BTS a HO ACC message to attempt to access a new cell.
Step 4 The target BTS forwards this message through an HO DETECT message to the BSC and
sends a PHY INFO message to the MS.
Step 5 The MS sends a FIRST SABM frame to the target BTS and the target BTS sends the BSC an
EST IND message, indicating that the MS has successfully accessed the target cell. The MS
also sends an HO CMP message to the BSC.
Step 6 The BSC sends an HO PERFORMED message to the MSC.
----End
The incoming internal inter-cell handover is part of the internal inter-cell handover. It refers to
the internal inter-cell handover procedure performed in the target cell (the cell where the MSis located after the handover). The source cell (the cell where the MS is located before the
handover) and the target cell can be two cells in a BTS or two cells in two BTSs controlled byone BSC.
Figure 12-12 shows the incoming internal inter-cell handover procedure.
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Figure 12-12 Incoming internal inter-cell handover
BTS1(CELL1) BSCMS
PHY INFO
HO DETECT
MS MSCBTS1(CELLO)
A
B
CHAN ACTIV
HO ACC
FIRST SABM
EST IND
CHAN ACTIV
ACKHO CMD
MR FROM MS
HO CMP
HO PERFORMED
A: Incoming Internal Inter-Cell Handover Requests
B: Incoming Internal Inter-Cell Handover Responses
Table 12-34 lists the counter classification of Incoming Internal Inter-Cell HandoverMeasurement per Cell.
Table 12-34 Counter classification of Incoming Internal Inter-Cell Handover Measurement per
Cell
Counter Classification Section
Incoming Internal Inter-Cell Handover Requests per Cell 0
Incoming Internal Inter-Cell Handover Responses per Cell 12.11.3
Failed Incoming Internal Inter-Cell Handovers per Cell 12.11.4
Incoming Internal Inter-Cell Handover Detection Messages Received byBSC per Cell
12.11.5
Incoming Internal Inter-Cell Handover Analyzed Measurement per Cell 12.11.6
12.11.2 Incoming Internal Inter-Cell Handover Requests per Cell
Counter
Table 12-35 lists the counters of Incoming Internal Inter-Cell Handover Requests per Cell.
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Table 12-35 Counters of Incoming Internal Inter-Cell Handover Requests per Cell
Number Counter
1 H3200W: Incoming Internal Inter-Cell Handover Requests (SDCCH)
(900/850-900/850)
2 H3200X: Incoming Internal Inter-Cell Handover Requests (SDCCH)(1800/1900-1800/1900)
3 H3200Y: Incoming Internal Inter-Cell Handover Requests (SDCCH) (900/850-1800/1900)
4 H3200Z: Incoming Internal Inter-Cell Handover Requests (SDCCH)(1800/1900-900/850)
5 H3209W: Incoming Internal Inter-Cell Handover Requests (TCH) (900/850-900/850)
6 H3209X: Incoming Internal Inter-Cell Handover Requests (TCH) (1800/1900-1800/1900)
7 H3209Y: Incoming Internal Inter-Cell Handover Requests (TCH) (900/850-1800/1900)
8 H3209Z: Incoming Internal Inter-Cell Handover Requests (TCH) (1800/1900-900/850)
Meaning
The BSC uses the handover algorithm to decide whether a handover is required or not based
on the measurement reports. If a handover is required and the source cell (current cell) and thetarget cell are two different cells controlled by a BSC, the BSC initiates an internal inter-cell
handover.
The counters measure the number of internal inter-cell handovers in the target cell. Themeasurement is based on the channel type and the crossing of frequency bands.
Along with Incoming Internal Inter-Cell Handover Responses per Cell and Failed Incoming
Internal Inter-Cell Handover , the counters show the performance of incoming internal inter-
cell handovers. Along with Outgoing Internal Inter-Cell Handover Measurement per Cell, thecounters show the performance of internal inter-cell handovers.
The channel involved in the measurement is of the following types:
SDCCH
TCH
The crossing of frequency bands is of the following types:
900/850 to 900/850
1800/1900 to 1800/1900
900/850 to 1800/1900
1800/1900 to 900/850
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Trigger Point
As shown in Figure 12-12 (A), the measurement is triggered when the BSC decides to initiate
an incoming internal inter-cell handover. The measurement is based on the channel type and
the crossing of frequency bands.
Formula
None.
12.11.3 Incoming Internal Inter-Cell Handover Responses per Cell
Counter
Table 12-36 lists the counters of Incoming Internal Inter-Cell Handover Responses per Cell.
Table 12-36 Counters of Incoming Internal Inter-Cell Handover Responses per Cell
Number Counter
1 H3210W: Incoming Internal Inter-Cell Handover Responses (SDCCH)
(900/850-900/850)
2 H3210X: Incoming Internal Inter-Cell Handover Responses (SDCCH)
(1800/1900-1800/1900)
3 H3210Y: Incoming Internal Inter-Cell Handover Responses (SDCCH)(900/850-1800/1900)
4 H3210Z: Incoming Internal Inter-Cell Handover Responses (SDCCH)
(1800/1900-900/850)
5 H3217W: Incoming Internal Inter-Cell Handover Responses (TCHF)
(900/850-900/850)
6 H3217X: Incoming Internal Inter-Cell Handover Responses (TCHF)
(1800/1900-1800/1900)
7 H3217Y: Incoming Internal Inter-Cell Handover Responses (TCHF)(900/850-1800/1900)
8 H3217Z: Incoming Internal Inter-Cell Handover Responses (TCHF)
(1800/1900-900/850)
9 H3218W: Incoming Internal Inter-Cell Handover Responses (TCHH)
(900/850-900/850)
10 H3218X: Incoming Internal Inter-Cell Handover Responses (TCHH)(1800/1900-1800/1900)
11 H3218Y: Incoming Internal Inter-Cell Handover Responses (TCHH)(900/850-1800/1900)
12 H3218Z: Incoming Internal Inter-Cell Handover Responses (TCHH)(1800/1900-900/850)
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Meaning
The counters measure the number of incoming internal inter-cell handover responses of the
target cell. The BSC sends the MS an HO CMD message in the source cell. This message is
regarded as a handover response of the target cell to the MS. The measurement is based on the
channel type and the crossing of frequency bands.
Along with Incoming Internal Inter-Cell Handover Requests per Cell, Intra-Cell Handover
Requests per Cell, and Failed Incoming Internal Inter-Cell Handovers per Cell, the countersshow the performance of incoming internal inter-cell handovers. Along with Outgoing
Internal Inter-Cell Handover Measurement per Cell, the counters show the performance ofinternal inter-cell handovers.
The channel involved in the measurement is of the following types:
SDCCH
TCHF
TCHHThe crossing of frequency bands is of the following types:
900/850 to 900/850
1800/1900 to 1800/1900
900/850 to 1800/1900
1800/1900 to 900/850
Trigger Point
As shown in Figure 12-12 (B), the measurement is triggered when the BSC sends the MS an
HO CMD message in the source cell. The measurement is based on the channel type and thecrossing of frequency bands.
Formula
None.
12.11.4 Failed Incoming Internal Inter-Cell Handovers per Cell
Counter
Table 12-37 lists the counters of Failed Incoming Internal Inter-Cell Handovers per Cell.
Table 12-37 Counters of Failed Incoming Internal Inter-Cell Handovers per Cell
Number Counter
1 H3220W: Failed Incoming Internal Inter-Cell Handovers (SDCCH) (900/850-900/850)
2 H3220X: Failed Incoming Internal Inter-Cell Handovers (SDCCH)(1800/1900-1800/1900)
3 H3220Y: Failed Incoming Internal Inter-Cell Handovers (SDCCH) (900/850-1800/1900)
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Performance Counter Reference 12 Call Measurement
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Number Counter
4 H3220Z: Failed Incoming Internal Inter-Cell Handovers (SDCCH) (1800/1900-
900/850)
5 H3229W: Failed Incoming Internal Inter-Cell Handovers (TCH) (900/850-900/850)
6 H3229X: Failed Incoming Internal Inter-Cell Handovers (TCH) (1800/1900-1800/1900)
7 H3229Y: Failed Incoming Internal Inter-Cell Handovers (TCH) (900/850-
1800/1900)
8 H3229Z: Failed Incoming Internal Inter-Cell Handovers (TCH) (1800/1900-900/850)
9 H3220A: Failed Incoming Internal Inter-Cell Handovers (Channel Unavailable)
(SDCCH)
10 H3229A: Failed Incoming Internal Inter-Cell Handovers (Channel Unavailable)(TCH)
11 H322B: Failed Incoming Internal Inter-Cell Handovers (Terrestrial Resource
Request Failed)
12 H322D: Failed Incoming Internal Inter-Cell Handovers (Reconnection to OldChannels)
13 H322G: Failed Incoming Internal Inter-Cell Handovers (A-Interface Failure)
14 H3220C: Failed Incoming Internal Inter-Cell Handovers (Timer Expired)
(SDCCH)
15 H3227Cb: Failed Incoming Internal Inter-Cell Handovers (Timer Expired)(TCHF) (Signaling Channel)
16 H3228Cb: Failed Incoming Internal Inter-Cell Handovers (Timer Expired)
(TCHH) (Signaling Channel)
17 H3227Ca: Failed Incoming Internal Inter-Cell Handovers (Timer Expired)
(TCHF) (Traffic Channel)
18 H3228Ca: Failed Incoming Internal Inter-Cell Handovers (Timer Expired)(TCHH) (Traffic Channel)
Meaning
The counters measure the number of failed incoming internal inter-cell handovers in the targetcell due to different causes. The measurement is based on the channel type, the failure cause,
and the crossing of frequency bands.
Along with Incoming Internal Inter-Cell Handover Requests per Cell and Incoming InternalInter-Cell Handover Responses per Cell, the counters show the performance of incoming
internal inter-cell handovers. Along with Outgoing Internal Inter-Cell Handover Measurement per Cell, the counters show the performance of internal inter-cell handovers.
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The channel involved in the measurement is of the following types:
SDCCH
TCH
The crossing of frequency bands is of the following types:
900/850 to 900/850
1800/1900 to 1800/1900
900/850 to 1800/1900
1800/1900 to 900/850
The failure causes include:
Channel unavailable
Terrestrial resource request failure
A-interface failure
Timer expired
Reconnection to old channels
Trigger Point
The trigger points of the counters are as follows:
Failed Incoming Internal Inter-Cell Handovers
As shown in Figure 12-13, the measurement is triggered when the intra-cell handoverfails before the handover completion timer expires. The measurement is based on thechannel type and the crossing of frequency bands.
The channel involved in the measurement is of the following types:
− SDCCH
− TCH
The crossing of frequency bands is of the following types:
− 900/850 to 900/850
− 1800/1900 to 1800/1900
− 900/850 to 1800/1900
− 1800/1900 to 900/850
Failed Incoming Internal Inter-Cell Handovers (Channel Unavailable)
As shown in Figure 12-13, the measurement is triggered when a channel request fails because the target cell has no channel available. The measurement is based on thechannel type.
The channel involved in the measurement is of the following types:
− SDCCH
− TCHF
− TCHH
Failed Incoming Internal Inter-Cell Handovers (Terrestrial Resource Request Failed)
As shown in Figure 12-13, the measurement is triggered when the BSC net-drive fails.
Failed Incoming Internal Inter-Cell Handovers (A-Interface Failure)
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As shown in Figure 12-13, the measurement is triggered when the BSC receives an A-interface failure message before the MS sends an HO CMP message to the BSC.
Failed Incoming Internal Inter-Cell Handovers (Timer Expired)
As shown in Figure 12-13, the BSC sends an HO CMD message to the MS and starts a
timer to wait for an HO CMP message. The measurement is triggered when the timerexpires. The measurement is based on the channel type.
The channel involved in the measurement is of the following types:
− SDCCH
− TCHF
− TCHH
Failed Incoming Internal Inter-Cell Handovers (Reconnection to Old Channels)
As shown in Figure 12-13, BSC sends an HO CMD message to the MS and starts a timer
to wait for an HO CMP message. Before the timer expires, the MS reconnects to the oldchannel and sends the BSC an HO FAIL message on the old channel. The measurement
is triggered when the BSC receives the HO FAIL message.
Figure 12-13 Trigger points of the counters of Failed Incoming Internal Inter-Cell Handovers perCell
BTS1(CELL1) BSCMS MS MSCBTS1(CELLO)
E
PHY INFO
HO DETECT
A
B
F
CHAN ACTIV
HO ACC
FIRST SABM
EST IND
CHAN
ACTIV ACK
HO CMD
MR FROM MS
TIME OUT
HO FAIL
HO CMP
HO PERFORMED
C
D
In the
incoming
internal
inter-cellhandover
procedure
A: Failed Incoming Internal Inter-Cell Handovers (Channel Unavailable)
B: Failed Incoming Internal Inter-Cell Handovers (Terrestrial Resource Request Failed)
C: Failed Incoming Internal Inter-Cell Handovers (A-Interface Failure)
D: Failed Incoming Internal Inter-Cell Handovers
E: Failed Incoming Internal Inter-Cell Handovers (Timer Expired)
F: Failed Incoming Internal Inter-Cell Handovers (Reconnection to Old Channels)
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Formula
None.
12.11.5 Incoming Internal Inter-Cell Handover DetectionMessages Received by BSC per Cell
Counter
Table 12-38 lists the counters of Incoming Internal Inter-Cell Handover Detection Messages
Received by BSC per Cell.
Table 12-38 Counters of Incoming Internal Inter-Cell Handover Detection Messages Received by
BSC per Cell
Number Counter
1 H3240: Incoming Internal Inter-Cell Handover Detection Messages Received by BSC (SDCCH)
2 H3247: Incoming Internal Inter-Cell Handover Detection Messages Received
by BSC (TCHF)
3 H3248: Incoming Internal Inter-Cell Handover Detection Messages Received
by BSC (TCHH)
MeaningThe counters measure the number of times the BSC receives an HO DETECT message from
the BTS in the target cell. The measurement is based on the channel type.
The channel involved in the measurement is of the following types:
SDCCH
TCHF
TCHH
Trigger Point
As shown in Figure 12-13, the measurement is triggered when the BSC receives an HODETECT message from the BTS in the target cell. The measurement is based on the channeltype.
Formula
None.
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12.11.6 Incoming Internal Inter-Cell Handover AnalyzedMeasurement per Cell
CounterTable 12-39 lists the counters of Incoming Internal Inter-Cell Handover AnalyzedMeasurement per Cell.
Table 12-39 Counters of Incoming Internal Inter-Cell Handover Analyzed Measurement per Cell
Number Counter
1 CH320: Incoming Internal Inter-Cell Handover Requests
2 CH323: Successful Incoming Internal Inter-Cell Handovers
3 TH323: Success Rate of Incoming Internal Inter-Cell Handover
4 CH322: Failed Incoming Internal Inter-Cell Handovers
5 CH324: Incoming Internal Inter-Cell Handover Detection Messages Received byBSC
6 CH321: Incoming Internal Inter-Cell Handover Responses
7 CH322C: Failed Incoming Internal Inter-Cell Handovers (Timer Expired)
Meaning None.
Trigger Point
None.
Formula
Incoming Internal Inter-Cell Handover Requests =
[Incoming Internal Inter-Cell Handover Requests (SDCCH) (900/850-900/850)] +
[Incoming Internal Inter-Cell Handover Requests (SDCCH) (1800/1900-1800/1900)] +
[Incoming Internal Inter-Cell Handover Requests (SDCCH) (900/850-1800/1900)] +
[Incoming Internal Inter-Cell Handover Requests (SDCCH) (1800/1900-900/850)] +
[Incoming Internal Inter-Cell Handover Requests (TCH) (900/850-900/850)] +
[Incoming Internal Inter-Cell Handover Requests (TCH) (1800/1900-1800/1900)] +
[Incoming Internal Inter-Cell Handover Requests (TCH) (900/850-1800/1900)] +
[Incoming Internal Inter-Cell Handover Requests (TCH) (1800/1900-900/850)]
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Successful Incoming Internal Inter-Cell Handovers =
[Incoming Internal Inter-Cell Handover Requests (SDCCH) (900/850-900/850)] +
[Incoming Internal Inter-Cell Handover Requests (SDCCH) (1800/1900-1800/1900)] +
[Incoming Internal Inter-Cell Handover Requests (SDCCH) (900/850-1800/1900)] +
[Incoming Internal Inter-Cell Handover Requests (SDCCH) (1800/1900-900/850)] +
[Incoming Internal Inter-Cell Handover Requests (TCH) (900/850-900/850)] +
[Incoming Internal Inter-Cell Handover Requests (TCH) (1800/1900-1800/1900)] +
[Incoming Internal Inter-Cell Handover Requests (TCH) (900/850-1800/1900)] +
[Incoming Internal Inter-Cell Handover Requests (TCH) (1800/1900-900/850)]-
[Failed Incoming Internal Inter-Cell Handovers (SDCCH) (900/850-900/850)]-
[Failed Incoming Internal Inter-Cell Handovers (SDCCH) (1800/1900-1800/1900)]-[Failed Incoming Internal Inter-Cell Handovers (SDCCH) (900/850-1800/1900)]-
[Failed Incoming Internal Inter-Cell Handovers (SDCCH) (1800/1900-900/850)]-
[Failed Incoming Internal Inter-Cell Handovers (TCH) (900/850-900/850)]-
[Failed Incoming Internal Inter-Cell Handovers (TCH) (1800/1900-1800/1900)]-
[Failed Incoming Internal Inter-Cell Handovers (TCH) (900/850-1800/1900)]-
[Failed Incoming Internal Inter-Cell Handovers (TCH) (1800/1900-900/850)]
Success Rate of Incoming Internal Inter-Cell Handover =
[Successful Incoming Internal Inter-Cell Handovers]*{100}/[Incoming Internal Inter-Cell
Handover Requests]
Failed Incoming Internal Inter-Cell Handovers =
[Failed Incoming Internal Inter-Cell Handovers (SDCCH) (900/850-900/850)] +
[Failed Incoming Internal Inter-Cell Handovers (SDCCH) (1800/1900-1800/1900)] +
[Failed Incoming Internal Inter-Cell Handovers (SDCCH) (900/850-1800/1900)] +
[Failed Incoming Internal Inter-Cell Handovers (SDCCH) (1800/1900-900/850)] +
[Failed Incoming Internal Inter-Cell Handovers (TCH) (900/850-900/850)] +
[Failed Incoming Internal Inter-Cell Handovers (TCH) (1800/1900-1800/1900)] +
[Failed Incoming Internal Inter-Cell Handovers (TCH) (900/850-1800/1900)] +
[Failed Incoming Internal Inter-Cell Handovers (TCH) (1800/1900-900/850)]
Incoming Internal Inter-Cell Handover Detection Messages Received by BSC =
[Incoming Internal Inter-Cell Handover Detection Messages Received by BSC (SDCCH)] +
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[Incoming Internal Inter-Cell Handover Detection Messages Received by BSC (TCHF)] +
[Incoming Internal Inter-Cell Handover Detection Messages Received by BSC (TCHH)]
Incoming Internal Inter-Cell Handover Responses =
[Incoming Internal Inter-Cell Handover Responses (SDCCH) (900/850-900/850)] +
[Incoming Internal Inter-Cell Handover Responses (SDCCH) (1800/1900-1800/1900)] +
[Incoming Internal Inter-Cell Handover Responses (SDCCH) (900/850-1800/1900)] +
[Incoming Internal Inter-Cell Handover Responses (SDCCH) (1800/1900-900/850)] +
[Incoming Internal Inter-Cell Handover Responses (TCHF) (900/850-900/850)] +
[Incoming Internal Inter-Cell Handover Responses (TCHF) (1800/1900-1800/1900)] +
[Incoming Internal Inter-Cell Handover Responses (TCHF) (900/850-1800/1900)] +[Incoming Internal Inter-Cell Handover Responses (TCHF) (1800/1900-900/850)] +
[Incoming Internal Inter-Cell Handover Responses (TCHH) (900/850-900/850)] +
[Incoming Internal Inter-Cell Handover Responses (TCHH) (1800/1900-1800/1900)] +
[Incoming Internal Inter-Cell Handover Responses (TCHH) (900/850-1800/1900)] +
[Incoming Internal Inter-Cell Handover Responses (TCHH) (1800/1900-900/850)]
Failed Incoming Internal Inter-Cell Handovers (Timer Expired) =
[Failed Incoming Internal Inter-Cell Handovers (Timer Expired) (SDCCH)] +
[Failed Incoming Internal Inter-Cell Handovers (Timer Expired) (TCHF) (Signaling Channel)]
+
[Failed Incoming Internal Inter-Cell Handovers (Timer Expired) (TCHH) (Signaling Channel)]+
[Failed Incoming Internal Inter-Cell Handovers (Timer Expired) (TCHF) (Traffic Channel)] +
[Failed Incoming Internal Inter-Cell Handovers (Timer Expired) (TCHH) (Traffic Channel)]
12.12 Outgoing Internal Inter-Cell HandoverMeasurement per Cell
12.12.1 Overview
Outgoing Internal Inter-Cell Handover Measurement per cell is used to measure the handover
of the cells controlled by one BSC. The measurement is performed in the source cell.
The outgoing internal inter-cell handover is initiated by measurement reports or by
assignment requests sent from the MSC. The descriptions of these two types of handovers areas follows:
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Outgoing internal inter-cell handover initiated by measurement reports (excluding
directed retry)
After an MS seizes a dedicated channel, it sends measurement reports to the BSC periodically.
After receiving the measurement reports, the BSC uses the handover algorithm to decide
whether a handover is required or not on the basis of the factors such as the cell load,concentric cell, signal interference, and measurement reports. If a handover is required and
the source cell (current cell) and the target cell are two cells in a BSC, an internal inter-cellhandover is initiated.
The procedure is as follows:
Step 1 The BSC sends a CHAN ACTIV message to the BTS where the target cell is located. This
message is used to activate the specified channel in the target cell.
Step 2 After receiving a CHAN ACTIV ACK message, the BSC requests for speech service
resources. If the request succeeds, the BSC sends the MS an HO CMD message, requestingthe MS to initiate a handover from the source cell to the target cell.
Step 3 The MS sends the target BTS a HO ACC message to attempt to access a new cell.
Step 4 The target BTS forwards this message through an HO DETECT message to the BSC andsends a PHY INFO message to the MS.
Step 5 The MS sends a FIRST SABM frame to the target BTS and the target BTS sends an EST INDmessage to the BSC, indicating that the MS has successfully accessed the target cell. The MSalso sends an HO CMP message to the BSC.
Step 6 The BSC sends an HO PERFORMED message to the MSC.
----End
The outgoing internal inter-cell handover is part of the internal inter-cell handover. It refers tothe internal inter-cell handover procedure performed in the source cell (the cell where the MSis located before the handover). The source cell and the target cell (the cell where the MS is
located after the handover) can be two cells in a BTS or two cells in two BTSs controlled byone BSC.
Figure 12-14 shows the procedure of outgoing internal inter-cell handover (excluding directedretry).
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Figure 12-14 Outgoing internal inter-cell handover (excluding directed retry)
BTS1(CELL1) BSCMS
PHY INFO
HO DETECT
MS MSCBTS1(CELLO)
A
B
CHAN ACTIV
HO ACC
FIRST SABM
EST IND
CHAN
ACTIV ACKHO CMD
MR FROM MS
HO CMP
HO PERFORMED
A: Outgoing Internal Inter-Cell Handover Requests (Excluding Directed Retry)
B: Outgoing Internal Inter-Cell Handover Commands (Excluding Directed Retry)
Outgoing internal inter-cell handover initiated by the assignment request sent from theMSC (directed retry)
The procedure is as follows:
Step 1 When an MS needs to initiate a call, it sends a CHAN RQD message to the BSC through theBTS.
Step 2 The BSC requests for an SDCCH or TCH signaling channel, and sends a CHAN ACTIVmessage to the BTS. After receiving a CHAN ACTIV ACK message from the BTS, the BSC
sends the MS an IMM ASS CMD message on the signaling channel, requesting the MS toaccess the network on this signaling channel.
Step 3 After receiving an EST IND message from the MS, the BSC encapsulates the CM SERV
REQ message carried in the EST IND message into the CR message and forwards it to theMSC. After the MSC returns a CC message, the communication between the MS and theMSC is established on the MM layer.
Step 4 After the messages CM SERV ACCEPT, SETUP, and CALL PROCEEDING are sent, theMSC sends an ASS REQ message to the BSC and the BSC analyzes the information such as
cell load to select an assignment mode (normal assignment, mode modification, directed
retry). If current cell load is too high, the BSC decides to initiate a directed retry procedure.
Step 5 The BSC sends a CHAN ACTIV message to the target cell. After receiving a CHAN ACTIV
ACK message, the BSC requests for speech service resources.
Step 6 If the request succeeds, the BSC sends an HO CMD message to the MS, and the MS sends an
HO ACC message to attempt to access a new cell.
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Step 7 The BTS sends an HO DETECT message to the BSC and sends a PHY INFO message to theMS.
Step 8 The MS sends a FIRST SABM to access the network. The BTS sends an EST IND messageto the BSC and a UA frame to the MS. The MS sends an HO CMP message to the BSC.
Step 9 The BSC sends an ASS CMP message to the MSC and completes other signaling processing.
----End
The outgoing internal inter-cell handover is part of the internal inter-cell handover procedure.
It refers to the handover procedure performed in the source cell (the cell where the MS islocated before the handover). The source cell and the target cell (the cell where the MS is
located after the handover) can be two cells in a BTS or two cells in two BTSs controlled byone BSC.
Figure 12-15 Outgoing internal inter-cell handover (directed retry)
BTS1(CELL1) BSCMS
UA EST IND(CM
SERV REQ)
MSBTS2(CELLO)
A
B
CHAN ACTIV
FIRST SABM
FIRST SABM
CHAN
ACTIV ACK
HO CMD
CHAN RED
CHAN REQ
IMM ASS CMD
CC
CR(CM
SERV REQ)
CM SERV
ACCEPT
SETUP
CALL
PROCEEDING
ASSIGN REQ
CHAN ACTIV
CHAN ACTIV ACK
UA
HO ACC
PHY INFOHO DETECT
EST IND
HO CMP
ASSIGN CMP
MSC
A: Outgoing Internal Inter-Cell Handover Requests (Directed Retry)
B: Outgoing Internal Inter-Cell Handover Commands (Directed Retry)
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Table 12-40 lists the counter classification of Outgoing Internal Inter-Cell Handover
Measurement per Cell.
Table 12-40 Counter classification of Outgoing Internal Inter-Cell Handover Measurement per
CellCounter Classification Section
Outgoing Internal Inter-Cell Handover Requests per Cell 0
Outgoing Internal Inter-Cell Handover Commands per Cell 12.12.3
Failed Outgoing Internal Inter-Cell Handovers per Cell 12.12.3
Outgoing Internal Inter-Cell Handover Measurement per Cell 12.12.5
12.12.2 Outgoing Internal Inter-Cell Handover Requests per Cell
Counter
Table 12-41 lists the counters of Outgoing Internal Inter-Cell Handover Requests per Cell(Excluding Directed Retry).
Table 12-41 Counters of Outgoing Internal Inter-Cell Handover Requests per Cell (ExcludingDirected Retry)
Number Counter
1 H3100W: Outgoing Internal Inter-Cell Handover Requests (SDCCH)(Excluding Directed Retry) (900/850-900/850)
2 H3100X: Outgoing Internal Inter-Cell Handover Requests (SDCCH)(Excluding Directed Retry) (1800/1900-1800/1900)
3 H3100Y: Outgoing Internal Inter-Cell Handover Requests (SDCCH)(Excluding Directed Retry) (900/850-1800/1900)
4 H3100Z: Outgoing Internal Inter-Cell Handover Requests (SDCCH)(Excluding Directed Retry) (1800/1900-900/850)
5 H3107W: Outgoing Internal Inter-Cell Handover Requests (TCHF) (Excluding
Directed Retry) (900/850-900/850)
6 H3107X: Outgoing Internal Inter-Cell Handover Requests (TCHF) (ExcludingDirected Retry) (1800/1900-1800/1900)
7 H3107Y: Outgoing Internal Inter-Cell Handover Requests (TCHF) (ExcludingDirected Retry) (900/850-1800/1900)
8 H3107Z: Outgoing Internal Inter-Cell Handover Requests (TCHF) (Excluding
Directed Retry) (1800/1900-900/850)
9 H3108W: Outgoing Internal Inter-Cell Handover Requests (TCHH) (ExcludingDirected Retry) (900/850-900/850)
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Number Counter
10 H3108X: Outgoing Internal Inter-Cell Handover Requests (TCHH) (Excluding
Directed Retry) (1800/1900-1800/1900)
11 H3108Y: Outgoing Internal Inter-Cell Handover Requests (TCHH) (ExcludingDirected Retry) (900/850-1800/1900)
12 H3108Z: Outgoing Internal Inter-Cell Handover Requests (TCHH) (ExcludingDirected Retry) (1800/1900-900/850)
13 H310A: Outgoing Internal Inter-Cell Handover Requests (Uplink Quality)
14 H310B: Outgoing Internal Inter-Cell Handover Requests (Downlink Quality)
15 H310C: Outgoing Internal Inter-Cell Handover Requests (Uplink Strength)
16 H310D: Outgoing Internal Inter-Cell Handover Requests (Downlink Strength)
17 H310E: Outgoing Internal Inter-Cell Handover Requests (Timing Advance)
18 H310F: Outgoing Internal Inter-Cell Handover Requests (Better Cell)
19 H310G: Outgoing Internal Inter-Cell Handover Requests (Load)
20 H310H: Outgoing Internal Inter-Cell Handover Requests (Rapid Level Drop)
21 H310I: Outgoing Internal Inter-Cell Handover Requests (MSC Intervention)
22 H310J: Outgoing Internal Inter-Cell Handover Requests (OM Intervention)
23 H310L: Outgoing Internal Inter-Cell Handover Requests (Other Causes)
Table 12-42 lists the counters of Outgoing Internal Inter-Cell Handover Requests per Cell
(Directed Retry).
Table 12-42 Counters of Outgoing Internal Inter-Cell Handover Requests per Cell (Directed Retry)
Number Counter
1 H3101W: Outgoing Internal Inter-Cell Handover Requests (Directed Retry)
(900/850-900/850)
2 H3101X: Outgoing Internal Inter-Cell Handover Requests (Directed Retry)
(1800/1900-1800/1900)
3 H3101Y: Outgoing Internal Inter-Cell Handover Requests (Directed Retry)(900/850-1800/1900)
4 H3101Z: Outgoing Internal Inter-Cell Handover Requests (Directed Retry)
(1800/1900-900/850)
Meaning
The descriptions of the counters are as follows
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Outgoing Internal Inter-Cell Handover Requests (Excluding Directed Retry)
The BSC uses the handover algorithm to decide whether a handover is required or not
based on the measurement reports. If a handover is required and the source cell (currentcell) and the target cell are two cells controlled by one BSC, the BSC initiates an internal
inter-cell handover.The counter measures the number of outgoing internal inter-cell handover requests
initiated by the BSC. The measurement is based on the channel type, the handover cause,and the crossing of frequency bands.
Along with Outgoing Internal Inter-Cell Handover Commands per Cell and Failed
Outgoing Internal Inter-Cell Handovers per Cell, the counter shows the performance ofoutgoing internal inter-cell handovers. Along with Incoming Internal Inter-Cell
Handover Measurement per Cell, the counter shows the performance of internal inter-cell handovers.
The channel involved in the measurement is of the following types:
− SDCCH
− TCHF− TCHH
The handover causes consist of the following:
− Uplink quality
− Downlink quality
− Uplink strength
− Downlink strength
− Timing advance
− Better cell
−
Load− Rapid level drop
− MSC intervention
− OM intervention
− Other causes
The crossing of frequency bands is of the following types:
− 900/850 to 900/850
− 1800/1900 to 1800/1900
− 900/850 to 1800/1900
− 1800/1900 to 900/850
Outgoing Internal Inter-Cell Handover Requests (Directed Retry)
When directed retry occurs in the assignment procedure and the source cell and the target
cell are two cells controlled by one BSC, the BSC sends an outgoing internal inter-cellhandover request to the MS. This counter measures the number of outgoing internal
inter-cell handover requests. The measurement is based on the crossing of frequency bands.
Along with Outgoing Internal Inter-Cell Handover Commands per Cell and FailedOutgoing Internal Inter-Cell Handovers per Cell, the counter shows the performance of
outgoing internal inter-cell handovers. Along with Incoming Internal Inter-Cell
Handover Measurement per Cell, the counter shows the performance of internal inter-cell handovers.
The crossing of frequency bands is of the following types:
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− 900/850 to 900/850
− 1800/1900 to 1800/1900
− 900/850 to 1800/1900
− 1800/1900 to 900/850
Trigger Point
The trigger points of the counters are as follows:
Outgoing Internal Inter-Cell Handover Requests (Excluding Directed Retry)
As shown in Figure 12-14 (A), the measurement is triggered when the BSC decides to
initiate an outgoing internal inter-cell handover based on measurement reports. Themeasurement is based on the channel type, the handover cause, and the crossing offrequency bands.
Outgoing Internal Inter-Cell Handover Requests (Directed Retry)
As shown in Figure 12-15 (A), the measurement is triggered when the BSC initiates adirected retry procedure. The measurement is based on the crossing of frequency bands.
Formula
None.
12.12.3 Outgoing Internal Inter-Cell Handover Commands perCell
Counter
Table 12-43 lists the counters of Outgoing Internal Inter-Cell Handover Commands per Cell(Excluding Directed Retry).
Table 12-43 Counters of Outgoing Internal Inter-Cell Handover Commands per Cell (ExcludingDirected Retry)
Number Counter
1 H3110W: Outgoing Internal Inter-Cell Handover Command (SDCCH)(Excluding Directed Retry) (900/850-900/850)
2 H3110X: Outgoing Internal Inter-Cell Handover Commands (SDCCH)
(Excluding Directed Retry) (1800/1900-1800/1900)
3 H3110Y: Outgoing Internal Inter-Cell Handover Commands (SDCCH)(Excluding Directed Retry) (900/850-1800/1900)
4 H3110Z: Outgoing Internal Inter-Cell Handover Commands (SDCCH)(Excluding Directed Retry) (1800/1900-900/850)
5 H3117W: Outgoing Internal Inter-Cell Handover Commands (TCHF)(Excluding Directed Retry) (900/850-900/850)
6 H3117X: Outgoing Internal Inter-Cell Handover Commands (TCHF)(Excluding Directed Retry) (1800/1900-1800/1900)
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Number Counter
7 H3117Y: Outgoing Internal Inter-Cell Handover Commands (TCHF)
(Excluding Directed Retry) (900/850-1800/1900)
8 H3117Z: Outgoing Internal Inter-Cell Handover Commands (TCHF)(Excluding Directed Retry) (1800/1900-900/850)
9 H3118W: Outgoing Internal Inter-Cell Handover Commands (TCHH)(Excluding Directed Retry) (900/850-900/850)
10 H3118X: Outgoing Internal Inter-Cell Handover Commands (TCHH)
(Excluding Directed Retry) (1800/1900-1800/1900)
11 H3118Y: Outgoing Internal Inter-Cell Handover Commands (TCHH)(Excluding Directed Retry) (900/850-1800/1900)
12 H3118Z: Outgoing Internal Inter-Cell Handover Commands (TCHH)
(Excluding Directed Retry) (1800/1900-900/850)
13 H311A: Outgoing Internal Inter-Cell Handover Commands (Uplink Quality)
14 H311B: Outgoing Internal Inter-Cell Handover Commands (DownlinkQuality)
15 H311C: Outgoing Internal Inter-Cell Handover Commands (Uplink Strength)
16 H311D: Outgoing Internal Inter-Cell Handover Commands (DownlinkStrength)
17 H311E: Outgoing Internal Inter-Cell Handover Commands (Timing Advance)
18 H311F: Outgoing Internal Inter-Cell Handover Commands (Better Cell)
19 H311G: Outgoing Internal Inter-Cell Handover Commands (Load)
20 H311H: Outgoing Internal Inter-Cell Handover Commands (Rapid Level
Drop)
21 H311I: Outgoing Internal Inter-Cell Handover Commands (MSC Intervention)
22 H311J: Outgoing Internal Inter-Cell Handover Commands (OM Intervention)
23 H311L: Outgoing Internal Inter-Cell Handover Commands (Other Causes)
Table 12-44 lists the counters of Outgoing Internal Inter-Cell Handover Commands per Cell(Directed Retry).
Table 12-44 Counters of Outgoing Internal Inter-Cell Handover Commands per Cell (DirectedRetry)
Number Counter
1 H3111W: Outgoing Internal Inter-Cell Handover Commands (Directed Retry)
(900/850-900/850)
2 H3111X: Outgoing Internal Inter-Cell Handover Commands (Directed Retry)
(1800/1900-1800/1900)
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Number Counter
3 H3111Y: Outgoing Internal Inter-Cell Handover Commands (Directed Retry)
(900/850-1800/1900)
4 H3111Z: Outgoing Internal Inter-Cell Handover Commands (Directed Retry)(1800/1900-900/850)
Meaning
The descriptions of the counters are as follows:
Outgoing Internal Inter-Cell Handover Commands (Excluding Directed Retry)
In the outgoing internal inter-cell handover (excluding directed retry) procedure, theBSC sends an HO CMD message to the MS. The measurement is performed in the
source cell. The measurement is based on channel type, the handover cause, and thecrossing of frequency bands.
Along with Outgoing Internal Inter-Cell Handover Requests per Cell and Failed
Outgoing Internal Inter-Cell Handovers per Cell, the counter shows the performance ofoutgoing internal inter-cell handovers. Along with Incoming Internal Inter-CellHandover Measurement per Cell, the counter shows the performance of internal inter-
cell handovers.
The channel involved in the measurement is of the following types:
− SDCCH
− TCHF
− TCHH
The handover causes consist of the following:
− Uplink quality
− Downlink quality
− Uplink strength
− Downlink strength
− Timing advance
− Better cell
− Load
− Rapid level drop
− MSC intervention
− OM intervention
− EDGE coverage
− Other causes
The crossing of frequency bands is of the following types:
− 900/850 to 900/850
− 1800/1900 to 1800/1900
− 900/850 to 1800/1900
− 1800/1900 to 900/850
Outgoing Internal Inter-Cell Handover Commands (Directed Retry)
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In the outgoing internal inter-cell handover (directed retry) procedure, the BSC sends anHO CMD message to the MS through the source cell. The measurement is performed inthe source cell. The measurement is based on the crossing of frequency bands.
Along with Outgoing Internal Inter-Cell Handover Requests per Cell and Failed
Outgoing Internal Inter-Cell Handovers per Cell, the counter shows the performance ofoutgoing internal inter-cell handovers. Along with Incoming Internal Inter-Cell
Handover Measurement per Cell, the counter shows the performance of internal inter-cell handovers.
The crossing of frequency bands is of the following types:
− 900/850 to 900/850
− 1800/1900 to 1800/1900
− 900/850 to 1800/1900
− 1800/1900 to 900/850
Trigger Point
The trigger points of the counters are as follows:
Outgoing Internal Inter-Cell Handover Commands (Excluding Directed Retry)
As shown in Figure 12-14 (B), the measurement is triggered when the BSC sends an HOCMD message to the MS through the source cell in the outgoing internal inter-cellhandover (excluding directed retry) procedure. The measurement is based on channeltype, the handover cause, and the crossing of frequency bands.
Outgoing Internal Inter-Cell Handover Commands (Directed Retry)
As shown in Figure 12-15 (B), the measurement is triggered when the BSC sends an HO
CMD message to the MS through the source cell in the outgoing internal inter-cellhandover (directed retry) procedure.
Formula
None.
12.12.4 Failed Outgoing Internal Inter-Cell Handovers per Cell
Counter
Based on the procedure where the trigger points are located, the counters of Failed Outgoing
Internal Inter-Cell Handovers per Cell can be classified into the following groups:
Failed Outgoing Internal Inter-Cell Handovers per Cell (Excluding Directed Retry)
Failed Outgoing Internal Inter-Cell Handovers per Cell (Directed Retry)
Failed Outgoing Internal Inter-Cell Handovers per Cell (Including Directed Retry)
Table 12-45 lists the counters of Failed Outgoing Internal Inter-Cell Handovers per Cell
(Excluding Directed Retry).
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Table 12-45 Counters of Failed Outgoing Internal Inter-Cell Handovers per Cell (ExcludingDirected Retry)
Number Counter
1 H3120W: Failed Outgoing Internal Inter-Cell Handovers (SDCCH)(Excluding Directed Retry) (900/850-900/850)
2 H3120X: Failed Outgoing Internal Inter-Cell Handovers (SDCCH)(Excluding Directed Retry) (1800/1900-1800/1900)
3 H3120Y: Failed Outgoing Internal Inter-Cell Handovers (SDCCH)
(Excluding Directed Retry) (900/850-1800/1900)
4 H3120Z: Failed Outgoing Internal Inter-Cell Handovers (SDCCH)
(Excluding Directed Retry) (1800/1900-900/850)
5 H3127W: Failed Outgoing Internal Inter-Cell Handovers (TCHF) (ExcludingDirected Retry) (900/850-900/850)
6 H3127X: Failed Outgoing Internal Inter-Cell Handovers (TCHF) (ExcludingDirected Retry) (1800/1900-1800/1900)
7 H3127Y: Failed Outgoing Internal Inter-Cell Handovers (TCHF) (Excluding
Directed Retry) (900/850-1800/1900)
8 H3127Z: Failed Outgoing Internal Inter-Cell Handovers (TCHF) (ExcludingDirected Retry) (1800/1900-900/850)
9 H3128W: Failed Outgoing Internal Inter-Cell Handovers (TCHH)(Excluding Directed Retry) (900/850-900/850)
10 H3128X: Failed Outgoing Internal Inter-Cell Handovers (TCHH) (ExcludingDirected Retry) (1800/1900-1800/1900)
11 H3128Y: Failed Outgoing Internal Inter-Cell Handovers (TCHH) (Excluding
Directed Retry) (900/850-1800/1900)
12 H3128Z: Failed Outgoing Internal Inter-Cell Handovers (TCHH) (ExcludingDirected Retry) (1800/1900-900/850)
13 H3120C: Failed Outgoing Internal Inter-Cell Handovers (Timer Expired)(SDCCH) (Excluding Directed Retry)
14 H312Da: Failed Outgoing Internal Inter-Cell Handovers (Reconnection toOld Channels) (Abnormal Release, Unspecified)
15 H312Db: Failed Outgoing Internal Inter-Cell Handovers (Reconnection toOld Channels) (Abnormal Release, Channel Unacceptable)
16 H312Dc: Failed Outgoing Internal Inter-Cell Handovers (Reconnection toOld Channels) (Abnormal Release, Timer Expired)
17 H312Dd: Failed Outgoing Internal Inter-Cell Handovers (Reconnection toOld Channels) (Abnormal Release, No Activity on the Radio Path)
18 H312De: Failed Outgoing Internal Inter-Cell Handovers (Reconnection toOld Channels) (Preemptive Release)
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Number Counter
19 H312Df: Failed Outgoing Internal Inter-Cell Handovers (Reconnection to
Old Channels) (Handover Failed, Timing Advance out of Range)
20 H312Dg: Failed Outgoing Internal Inter-Cell Handovers (Reconnection toOld Channels) (Channel Mode Unavailable)
21 H312Dh: Failed Outgoing Internal Inter-Cell Handovers (Reconnection toOld Channels) (Frequency Unavailable)
22 H312Di: Failed Outgoing Internal Inter-Cell Handovers (Reconnection to
Old Channels) (Call Already Cleared)
23 H312Dj: Failed Outgoing Internal Inter-Cell Handovers (Reconnection toOld Channels) (Semantically Incorrect Message)
24 H312Dk: Failed Outgoing Internal Inter-Cell Handovers (Reconnection to
Old Channels) (Invalid Mandatory Information)
25 H312Dl: Failed Outgoing Internal Inter-Cell Handovers (Reconnection toOld Channels) (Message Type Non-existent or Not Implemented)
26 H312Dm: Failed Outgoing Internal Inter-Cell Handovers (Reconnection to
Old Channels) (Message Type Not Compatible with Protocol State)
27 H312Dn: Failed Outgoing Internal Inter-Cell Handovers (Reconnection toOld Channels) (Conditional IE Error)
28 H312Do: Failed Outgoing Internal Inter-Cell Handovers (Reconnection toOld Channels) (No Cell Allocation Available)
29 H312Dp: Failed Outgoing Internal Inter-Cell Handovers (Reconnection toOld Channels) (Protocol Error Unspecified)
30 H312Dq: Failed Outgoing Internal Inter-Cell Handovers (Reconnection toOld Channels) (Other Causes)
Table 12-46 lists the counters of Failed Outgoing Internal Inter-Cell Handovers per Cell
(Directed Retry).
Table 12-46 Counters of Failed Outgoing Internal Inter-Cell Handovers per Cell (Directed Retry)
Number Counter
1 H3121W: Failed Outgoing Internal Inter-Cell Handovers (Directed Retry)
(900/850-900/850)
2 H3121X: Failed Outgoing Internal Inter-Cell Handovers (Directed Retry)
(1800/1900-1800/1900)
3 H3121Y: Failed Outgoing Internal Inter-Cell Handovers (Directed Retry)(900/850-1800/1900)
4 H3121Z: Failed Outgoing Internal Inter-Cell Handovers (Directed Retry)(1800/1900-900/850)
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference
12-112 Huawei Technologies Proprietary Issue 03 (2007-05-09)
Number Counter
5 H3121C: Failed Outgoing Internal Inter-Cell Handovers (Timer Expired)
(Directed Retry)
Failed Outgoing Internal Inter-Cell Handovers per Cell (Including Directed Retry) refers the
failed outgoing internal inter-cell handovers initiated by measurement reports or directed retry.
Table 12-47 lists the counters of Failed Outgoing Internal Inter-Cell Handovers per Cell(Including Directed Retry)
Table 12-47 Counters of Failed Outgoing Internal Inter-Cell Handovers per Cell (IncludingDirected Retry)
Number Counter
1 H312A: Failed Outgoing Internal Inter-Cell Handovers (Channel Unavailable)
2 H312B: Failed Outgoing Internal Inter-Cell Handovers (Terrestrial Resource
Request Failed)
3 H312G: Failed Outgoing Internal Inter-Cell Handovers (A-Interface Failure)
4 H3127Cb: Failed Outgoing Internal Inter-Cell Handovers (Timer Expired)(TCHF) (Signaling Channel)
5 H3128Cb: Failed Outgoing Internal Inter-Cell Handovers (Timer Expired)(TCHH) (Signaling Channel)
6 H3127Ca: Failed Outgoing Internal Inter-Cell Handovers (Timer Expired)(TCHF) (Traffic Channel)
7 H3128Ca: Failed Outgoing Internal Inter-Cell Handovers (Timer Expired)(TCHH) (Traffic Channel)
8 H3122A: Failed Outgoing Internal Inter-Cell Handovers (Uplink Quality)
9 H3122B: Failed Outgoing Internal Inter-Cell Handovers (Downlink Quality)
10 H3122C: Failed Outgoing Internal Inter-Cell Handovers (Uplink Strength)
11 H3122D: Failed Outgoing Internal Inter-Cell Handovers (Downlink Strength)
12 H3122E: Failed Outgoing Internal Inter-Cell Handovers (Timing Advance)
13 H3122F: Failed Outgoing Internal Inter-Cell Handovers (Better Cell)
14 H3122G: Failed Outgoing Internal Inter-Cell Handovers (Load)
15 H3122H: Failed Outgoing Internal Inter-Cell Handovers (Rapid Level Drop)
16 H3122I: Failed Outgoing Internal Inter-Cell Handovers (MSC Intervention)
17 H3122J: Failed Outgoing Internal Inter-Cell Handovers (OM Intervention)
18 H3122L: Failed Outgoing Internal Inter-Cell Handovers (Other Causes)
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference 12 Call Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 12-113
Meaning
The descriptions of the counters are as follows:
Failed Outgoing Internal Inter-Cell Handovers per Cell (Excluding Directed Retry)
In the outgoing internal inter-cell handover (excluding directed retry) procedure, whenthe outgoing internal inter-cell handover fails because errors occur before the BSC
receives an HO CMP message or before the timer that is set to wait for the HO CMPmessage expires, the BSC measures the counters. The measurement is based on thechannel type, the failure cause, the handover cause, and the crossing of frequency bands.
Along with Outgoing Internal Inter-Cell Handover Requests per Cell and Outgoing
Internal Inter-Cell Handover Commands per Cell, the counters show the performance ofoutgoing internal inter-cell handovers. Along with Incoming Internal Inter-Cell
Handover Measurement per Cell, the counters show the performance of internal inter-cell handovers.
The channel involved in the measurement is of the following types:
− SDCCH− TCHF
− TCHH
The failure causes include the following:
− Channel unavailable
− Terrestrial resource request failure
− A-Interface Failure
− MSC Intervention
− Timer Expired
− Reconnection to Old Channels
− Congestion
The handover causes consist of the following:
− Uplink quality
− Downlink quality
− Uplink strength
− Downlink strength
− Timing advance
− Better cell
− Load
− Rapid level drop
− MSC intervention
− OM intervention
− EDGE coverage
− Other causes
The crossing of frequency bands is of the following types:
− 900/850 to 900/850
− 1800/1900 to 1800/1900
− 900/850 to 1800/1900
− 1800/1900 to 900/850
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12 Call Measurement
HUAWEI BSC6000 Base Station Controller
Performance Counter Reference
12-114 Huawei Technologies Proprietary Issue 03 (2007-05-09)
Failed Outgoing Internal Inter-Cell Handovers per Cell (Directed Retry)
In the outgoing internal inter-cell handover (directed retry) procedure, when the outgoing
internal inter-cell handover fails because errors occur before the BSC receives an HOCMP message or before the timer that is set to wait for the HO CMP message expires,
the BSC measures the counters. The measurement is based on the channel type, thefailure cause, the handover cause, and the crossing of frequency bands.
Along with Outgoing Internal Inter-Cell Handover Requests per Cell and OutgoingInternal Inter-Cell Handover Commands per Cell, the counters show the performance of
outgoing internal inter-cell handovers. Along with Incoming Internal Inter-CellHandover Measurement per Cell, the counters show the performance of internal inter-cell handovers.
The channel involved in the measurement is of the following types:
− TCHF
− TCHH
The failure causes include the following:
− Channel unavailable
− Terrestrial resource request failure
− A-Interface Failure
− MSC Intervention
− Timer Expired
The handover causes consist of the following:
− Uplink quality
− Downlink quality
− Uplink strength
− Downlink strength− Timing advance
− Better cell
− Load
− Rapid level drop
− MSC intervention
− OM intervention
− EDGE coverage
− Other causes
The crossing of frequency bands is of the following types:− 900/850 to 900/850
− 1800/1900 to 1800/1900
− 900/850 to 1800/1900
− 1800/1900 to 900/850
Trigger Point
Figure 12-16 and Figure 12-17 show the trigger points of the counters of Failed OutgoingInternal Inter-Cell Handovers per Cell (Excluding Directed Retry) and Failed Outgoing
Internal Inter-Cell Handovers per Cell (Directed Retry).
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference 12 Call Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 12-115
Figure 12-16 Trigger points of the counters of Failed Outgoing Internal Inter-Cell Handovers perCell (Excluding Directed Retry)
BTS1(CELL1) BSCMS
PHY INFO
HO DETECT
MS MSCBTS1(CELLO)
A
C
CHAN ACTIV
HO ACC
FIRST SABM
EST IND
CHAN ACTIV
ACK
HO CMD
MR FROM MS
HO CMP
HO PERFORMED
H
F
B
G
D
E
In the
outgoing
internalinter-cell
handover
procedure
I
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12 Call Measurement
HUAWEI BSC6000 Base Station Controller
Performance Counter Reference
12-116 Huawei Technologies Proprietary Issue 03 (2007-05-09)
Figure 12-17 Trigger points of the counters of Failed Outgoing Internal Inter-Cell Handovers per Cell (Directed Retry)
BTS1(CELL1) BSCMS
UA EST IND(CM
SERV REQ)
MSBTS2(CELLO)
A
B
CHAN ACTIV
FIRSTSABM
FIRSTSABM
CHAN
ACTIV ACK
HO CMD
CHAN RED
CHAN REQ
IMM ASSCMD
CC
CR(CM
SERV REQ)
CMSERV
ACCEPT
SETUP
CALL
PROCEEDING
ASSIGNREQ
CHAN ACTIV
CHAN ACTIV ACK
UA
HO ACCPHY INFO
HO DETECT
EST IND
HO CMP
ASSIGNCMP
MSC
C
F
TIMEOUT
In the outgoing
internal i nter-cell
handover
procedure
D
E
J
G
A: Failed Outgoing Internal Inter-Cell Handovers (Channel Unavailable)
B: Failed Outgoing Internal Inter-Cell Handovers (Congestion)
C: Failed Outgoing Internal Inter-Cell Handovers (Terrestrial Resource Request Failed)
D: Failed Outgoing Internal Inter-Cell Handovers (A-Interface Failure)
E: Failed Outgoing Internal Inter-Cell Handovers (Clear Commands Sent by MSC)
F: Failed Outgoing Internal Inter-Cell Handovers (Timer Expired)
G: Failed Outgoing Internal Inter-Cell Handovers (Handover Causes)
H: Failed Outgoing Internal Inter-Cell Handovers (Reconnection to Old Channels)
I: Failed Outgoing Internal Inter-Cell Handovers (Excluding Directed Retry)
J: Failed Outgoing Internal Inter-Cell Handovers (Directed Retry)
Failed Outgoing Internal Inter-Cell Handovers (Excluding Directed Retry)
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference 12 Call Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 12-117
As shown in Figure 12-16, in the outgoing internal inter-cell handover (excludingdirected retry) procedure, the measurement is triggered when the handover fails beforethe MS successfully accesses the target cell and before the handover completed timer
expires. The measurement is based on the channel type and the crossing of frequency bands.
The channel involved in the measurement is of the following types:
− SDCCH
− TCHF
− TCHH
The crossing of frequency bands is of the following types:
− 900/850 to 900/850
− 1800/1900 to 1800/1900
− 900/850 to 1800/1900
− 1800/1900 to 900/850
Failed Outgoing Internal Inter-Cell Handovers (Reconnection to Old Channels,Excluding Directed Retry)
As shown in Figure 12-16, in the outgoing internal inter-cell handover procedure, theBSC sends an HO CMD message to the MS through the source cell and initiates a timerto wait for an HO CMP message. The measurement is triggered when the MS reconnects
to the old channel and sends an HO FAIL message on the old channel. The measurementis based on the failure cause.
The failure causes consist of the following:
− Abnormal release, unspecified
− Abnormal release, channel unacceptable
−
Abnormal release, timer expired− Abnormal release, no activity on the radio path
− Preemptive release
− Handover failed, timing advance out of range
− Channel mode unavailable
− Frequency unavailable
− Call already cleared
− Semantically incorrect message
− Invalid mandatory information
− Message type non-existent or not implemented
− Message type not compatible with protocol state
− Conditional IE error
− No cell allocation available
− Protocol error unspecified
− Other causes
Failed Outgoing Internal Inter-Cell Handovers (Directed Retry)
As shown in Figure 12-17, in the outgoing internal inter-cell handover (directed retry)
procedure, the measurement is triggered when the handover fails before the MSsuccessfully accesses the target cell and before the handover completed timer expires.The measurement is based on the crossing of frequency bands.
The crossing of frequency bands is of the following types:
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12 Call Measurement
HUAWEI BSC6000 Base Station Controller
Performance Counter Reference
12-118 Huawei Technologies Proprietary Issue 03 (2007-05-09)
− 900/850 to 900/850
− 1800/1900 to 1800/1900
− 900/850 to 1800/1900
− 1800/1900 to 900/850
Failed Outgoing Internal Inter-Cell Handovers (Channel Unavailable)
As shown in Figure 12-16 and Figure 12-17, in the outgoing internal inter-cell handover
(including directed retry) procedure, the measurement is triggered when the channelrequest fails and the failure cause is no channel available.
Failed Outgoing Internal Inter-Cell Handovers (Terrestrial Resource Request Failed)
As shown in Figure 12-16 and Figure 12-17, in the outgoing internal inter-cell handover(including directed retry) procedure, the measurement is triggered when the net-drivefails.
Failed Outgoing Internal Inter-Cell Handovers (A-Interface Failure)
As shown in Figure 12-16 and Figure 12-17, in the outgoing internal inter-cell handover
(including directed retry) procedure, the measurement is triggered when an A interfacefailure message is received from the MSC.
Failed Outgoing Internal Inter-Cell Handovers (Clear Commands Sent by MSC)
As shown in Figure 12-16 and Figure 12-17, in the outgoing internal inter-cell handover(including directed retry) procedure, the measurement is triggered when a clearcommand is received from the MSC.
Failed Outgoing Internal Inter-Cell Handovers (Timer Expired)
As shown in Figure 12-16 and Figure 12-17, in the outgoing internal inter-cell handover
(including directed retry) procedure, the measurement is triggered when the handovercompleted timer expires.
Failed Outgoing Internal Inter-Cell Handovers (Handover Causes)
As shown in Figure 12-16 and Figure 12-17, in the outgoing internal inter-cell handover
(including directed retry) procedure, the measurement is triggered when the handoverfails due to abnormal factors. The measurement is based on handover causes.
The handover causes consist of the following:
− Uplink quality
− Downlink quality
− Uplink strength
− Downlink strength
− Timing advance
−
Better cell− Load
− Rapid level drop
− MSC intervention
− OM intervention
− EDGE coverage
− Other causes
Failed Outgoing Internal Inter-Cell Handovers (Congestion)
As shown in Figure 12-16 and Figure 12-17, in the outgoing internal inter-cell handover
(Including Directed Retry) procedure, the measurement is triggered when the channel
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference 12 Call Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 12-119
request fails because of the target cell congestion. The measurement is based on thecauses of congestion.
The causes of congestion consist of the following:
− Uplink quality
− Downlink quality
− Uplink strength
− Downlink strength
− Timing advance
− Better cell
− Load
− Rapid level drop
− MSC intervention
− OM intervention
− Directed retry− Minimum timing advance
− Other causes
Formula
None.
12.12.5 Outgoing Internal Inter-Cell Handover Measurement perCell
Counter
Table 12-48 lists the counters of Outgoing Internal Inter-Cell Handover Measurement per Cell.
Table 12-48 Counters of Outgoing Internal Inter-Cell Handover Measurement per Cell
Number Counter
1 CH310: Outgoing Internal Inter-Cell Handover Requests
2 CH313: Successful Outgoing Internal Inter-Cell Handover
3 CH312: Failed Outgoing Internal Inter-Cell Handovers
4 TH313: Success Rate of Outgoing Internal Inter-Cell Handover
5 CH311: Outgoing Internal Inter-Cell Handover Commands
6 CH312C: Failed Outgoing Internal Inter-Cell Handovers (Timer Expired)
7 CH312D: Failed Outgoing Internal Inter-Cell Handovers (Reconnection toOld Channels)
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12 Call Measurement
HUAWEI BSC6000 Base Station Controller
Performance Counter Reference
12-120 Huawei Technologies Proprietary Issue 03 (2007-05-09)
Meaning
None.
Trigger Point None.
Formula
Outgoing Internal Inter-Cell Handover Requests =
[Outgoing Internal Inter-Cell Handover Requests (SDCCH) (Excluding Directed Retry)(900/850-900/850)] +
[Outgoing Internal Inter-Cell Handover Requests (SDCCH) (Excluding Directed Retry)
(1800/1900-1800/1900)] +
[Outgoing Internal Inter-Cell Handover Requests (SDCCH) (Excluding Directed Retry)(900/850-1800/1900)] +
[Outgoing Internal Inter-Cell Handover Requests (SDCCH) (Excluding Directed Retry)(1800/1900-900/850)] +
[Outgoing Internal Inter-Cell Handover Requests (TCHF) (Excluding Directed Retry)
(900/850-900/850)] +
[Outgoing Internal Inter-Cell Handover Requests (TCHF) (Excluding Directed Retry)(1800/1900-1800/1900)] +
[Outgoing Internal Inter-Cell Handover Requests (TCHF) (Excluding Directed Retry)
(900/850-1800/1900)] +[Outgoing Internal Inter-Cell Handover Requests (TCHF) (Excluding Directed Retry)(1800/1900-900/850)] +
[Outgoing Internal Inter-Cell Handover Requests (TCHH) (Excluding Directed Retry)(900/850-900/850)] +
[Outgoing Internal Inter-Cell Handover Requests (TCHH) (Excluding Directed Retry)
(1800/1900-1800/1900)] +
[Outgoing Internal Inter-Cell Handover Requests (TCHH) (Excluding Directed Retry)(900/850-1800/1900)] +
[Outgoing Internal Inter-Cell Handover Requests (TCHH) (Excluding Directed Retry)(1800/1900-900/850)] +
[Outgoing Internal Inter-Cell Handover Requests (Directed Retry) (900/850-900/850)] +
[Outgoing Internal Inter-Cell Handover Requests (Directed Retry) (1800/1900-1800/1900)] +
[Outgoing Internal Inter-Cell Handover Requests (Directed Retry) (900/850-1800/1900)] +
[Outgoing Internal Inter-Cell Handover Requests (Directed Retry) (1800/1900-900/850)]
Successful Outgoing Internal Inter-Cell Handover =
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference 12 Call Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 12-121
[Outgoing Internal Inter-Cell Handover Requests] -[Failed Outgoing Internal Inter-CellHandovers]
Failed Outgoing Internal Inter-Cell Handovers =[Failed Outgoing Internal Inter-Cell Handovers (SDCCH) (Excluding Directed Retry)
(900/850-900/850)] +
[Failed Outgoing Internal Inter-Cell Handovers (SDCCH) (Excluding Directed Retry)(1800/1900-1800/1900)] +
[Failed Outgoing Internal Inter-Cell Handovers (SDCCH) (Excluding Directed Retry)
(900/850-1800/1900)] +
[Failed Outgoing Internal Inter-Cell Handovers (SDCCH) (Excluding Directed Retry)(1800/1900-900/850)] +
[Failed Outgoing Internal Inter-Cell Handovers (TCHF) (Excluding Directed Retry) (900/850-900/850)] +
[Failed Outgoing Internal Inter-Cell Handovers (TCHF) (Excluding Directed Retry)
(1800/1900-1800/1900)] +
[Failed Outgoing Internal Inter-Cell Handovers (TCHF) (Excluding Directed Retry) (900/850-1800/1900)] +
[Failed Outgoing Internal Inter-Cell Handovers (TCHF) (Excluding Directed Retry)
(1800/1900-900/850)] +
[Failed Outgoing Internal Inter-Cell Handovers (TCHH) (Excluding Directed Retry)(900/850-900/850)] +
[Failed Outgoing Internal Inter-Cell Handovers (TCHH) (Excluding Directed Retry)(1800/1900-1800/1900)] +
[Failed Outgoing Internal Inter-Cell Handovers (TCHH) (Excluding Directed Retry)
(900/850-1800/1900)] +
[Failed Outgoing Internal Inter-Cell Handovers (TCHH) (Excluding Directed Retry)
(1800/1900-900/850)] +
[Failed Outgoing Internal Inter-Cell Handovers (Directed Retry) (900/850-900/850)] +
[Failed Outgoing Internal Inter-Cell Handovers (Directed Retry) (1800/1900-1800/1900)] +
[Failed Outgoing Internal Inter-Cell Handovers (Directed Retry) (900/850-1800/1900)] +[Failed Outgoing Internal Inter-Cell Handovers (Directed Retry) (1800/1900-900/850)]
Success Rate of Outgoing Internal Inter-Cell Handover =
[Successful Outgoing Internal Inter-Cell Handover]*{100}/[Outgoing Internal Inter-CellHandover Requests]
Outgoing Internal Inter-Cell Handover Commands =
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference
12-122 Huawei Technologies Proprietary Issue 03 (2007-05-09)
[Outgoing Internal Inter-Cell Handover Commands (SDCCH) (Excluding Directed Retry)(900/850-900/850)] +
[Outgoing Internal Inter-Cell Handover Commands (SDCCH) (Excluding Directed Retry)
(1800/1900-1800/1900)] +
[Outgoing Internal Inter-Cell Handover Commands (SDCCH) (Excluding Directed Retry)
(900/850-1800/1900)] +
[Outgoing Internal Inter-Cell Handover Commands (SDCCH) (Excluding Directed Retry)(1800/1900-900/850)] +
[Outgoing Internal Inter-Cell Handover Commands (TCHF) (Excluding Directed Retry)(900/850-900/850)] +
[Outgoing Internal Inter-Cell Handover Commands (TCHF) (Excluding Directed Retry)
(1800/1900-1800/1900)] +
[Outgoing Internal Inter-Cell Handover Commands (TCHF) (Excluding Directed Retry)
(900/850-1800/1900)] +
[Outgoing Internal Inter-Cell Handover Commands (TCHF) (Excluding Directed Retry)
(1800/1900-900/850)] +
[Outgoing Internal Inter-Cell Handover Commands (TCHH) (Excluding Directed Retry)(900/850-900/850)] +
[Outgoing Internal Inter-Cell Handover Commands (TCHH) (Excluding Directed Retry)(1800/1900-1800/1900)] +
[Outgoing Internal Inter-Cell Handover Commands (TCHH) (Excluding Directed Retry)
(900/850-1800/1900)] +
[Outgoing Internal Inter-Cell Handover Commands (TCHH) (Excluding Directed Retry)(1800/1900-900/850)] +
[Outgoing Internal Inter-Cell Handover Commands (Directed Retry) (900/850-900/850)] +
[Outgoing Internal Inter-Cell Handover Commands (Directed Retry) (1800/1900-1800/1900)]+
[Outgoing Internal Inter-Cell Handover Commands (Directed Retry) (900/850-1800/1900)] +
[Outgoing Internal Inter-Cell Handover Commands (Directed Retry) (1800/1900-900/850)]
Failed Outgoing Internal Inter-Cell Handovers (Timer Expired) =[Failed Outgoing Internal Inter-Cell Handovers (Timer Expired) (SDCCH) (ExcludingDirected Retry)] +
[Failed Outgoing Internal Inter-Cell Handovers (Timer Expired) (TCHF) (Signaling Channel)]
+
[Failed Outgoing Internal Inter-Cell Handovers (Timer Expired) (TCHH) (Signaling Channel)]+
[Failed Outgoing Internal Inter-Cell Handovers (Timer Expired) (TCHF) (Traffic Channel)] +
[Failed Outgoing Internal Inter-Cell Handovers (Timer Expired) (TCHH) (Traffic Channel)] +
[Failed Outgoing Internal Inter-Cell Handovers (Timer Expired) (Directed Retry)]
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference 12 Call Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 12-123
Failed Outgoing Internal Inter-Cell Handovers (Reconnection to Old Channels) =
[Failed Outgoing Internal Inter-Cell Handovers (Reconnection to Old Channels) (Abnormal
Release, Unspecified)] +
[Failed Outgoing Internal Inter-Cell Handovers (Reconnection to Old Channels) (AbnormalRelease, Channel Unacceptable)] +
[Failed Outgoing Internal Inter-Cell Handovers (Reconnection to Old Channels) (AbnormalRelease, Timer Expired)] +
[Failed Outgoing Internal Inter-Cell Handovers (Reconnection to Old Channels) (Abnormal
Release, No Activity on the Radio Path)] +
[Failed Outgoing Internal Inter-Cell Handovers (Reconnection to Old Channels) (PreemptiveRelease)] +
[Failed Outgoing Internal Inter-Cell Handovers (Reconnection to Old Channels) (Handover
Failed, Timing Advance out of Range)] +
[Failed Outgoing Internal Inter-Cell Handovers (Reconnection to Old Channels) (ChannelMode Unavailable)] +
[Failed Outgoing Internal Inter-Cell Handovers (Reconnection to Old Channels) (FrequencyUnavailable)] +
[Failed Outgoing Internal Inter-Cell Handovers (Reconnection to Old Channels) (Call Already
Cleared)] +
[Failed Outgoing Internal Inter-Cell Handovers (Reconnection to Old Channels)(Semantically Incorrect Message)] +
[Failed Outgoing Internal Inter-Cell Handovers (Reconnection to Old Channels) (Invalid
Mandatory Information)] +
[Failed Outgoing Internal Inter-Cell Handovers (Reconnection to Old Channels) (MessageType Non-existent or Not Implemented)] +
[Failed Outgoing Internal Inter-Cell Handovers (Reconnection to Old Channels) (MessageType Not Compatible with Protocol State)] +
[Failed Outgoing Internal Inter-Cell Handovers (Reconnection to Old Channels) (Conditional
IE Error)] +
[Failed Outgoing Internal Inter-Cell Handovers (Reconnection to Old Channels) (No CellAllocation Available)] +
[Failed Outgoing Internal Inter-Cell Handovers (Reconnection to Old Channels) (ProtocolError Unspecified)] +
[Failed Outgoing Internal Inter-Cell Handovers (Reconnection to Old Channels) (OtherCauses)]
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Performance Counter Reference
12-124 Huawei Technologies Proprietary Issue 03 (2007-05-09)
12.13 Incoming External Inter-Cell HandoverMeasurement per Cell
12.13.1 OverviewAfter the BSC receives measurement reports from the MS, it uses the handover algorithm todecide whether a handover is required or not on the basis of the factors such as the cell load,
signal quality, signal interference, and measurement reports. If a handover is required and thesource cell (current cell) and the target cell are controlled by two BSCs, an external inter-cell
handover is initiated.
The incoming external inter-cell handover is part of the external inter-cell handover. It refersto the external inter-cell handover performed in the target cell.
In the following topics, the BSC where the source cell is located is called BSC1 and the BSC where the
target cell is located is called BSC2. The BTS where the source cell is located is called BTS1 and theBTS where the target cell is located is called BTS2
The external inter-cell handover procedure is as follows:
Step 1 The handover algorithm in BSC1 notifies BSC1 to initiate an external inter-cell handover
based on the factors such as the measurement reports received from the MS, current cell load,
and the cell load of the neighbor cell.
Step 2 BSC1 sends the MSC an HO RQD message, requesting the MSC of the target cell.
Step 3 Based on the target cell, the MSC finds BSC2 and sends an HO REQ message to BSC2.
Step 4 BSC2 requests for a traffic channel from the target cell. After the request succeeds, BSC2
sends a CHAN ACTIV message to the target cell. After receiving a CHAN ACTIV ACKmessage from the target cell, BSC2 requests for speech service resources.
Step 5 After the request succeeds, BSC2 sends the MSC an HO REQ ACK message to notify the
MSC that the target cell is ready for the MS access.
Step 6 The MSC sends an HO CMD message to BSC1 and BSC1 forwards this message to the MS.
This message is used to request the MS to access the target cell.
Step 7 The MS sends the target cell an HO ACC message to attempt to access the new cell. BTS2
sends an HO DETECT message to BSC2 and a PHY INFO message to the MS.
Step 8 The MS sends a FIRST SABM frame to BTS2. After receiving this frame, BTS2 sends an
EST IND message to BSC2 and returns a UA frame to the MS.
Step 9 After the MS accesses the target cell, it sends an HO CMP message to BSC2 and BSC2forwards this message to the MSC.
Step 10 The MSC sends a CLR CMD message to BSC1 and the BSC1 releases the terrestrial
resources in the source cell.
Step 11 BSC1 sends a CLR CMP message to the MSC.
----End
The measurement of the incoming external inter-cell handover is performed in the target cell.
Figure 12-18 shows the incoming external inter-cell handover.
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference 12 Call Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 12-125
Figure 12-18 Incoming external inter-cell handover
BTS1 BSC1MS
HO CMD
MSMSC BTS2
A
B
HO REQ ACK
MR FROM MS
HO RQD
HO REQ
CHAN ACTIV
CHAN
ACTIV ACK
HO DETECT
HO CMD
HO DETECT
EST IND
HO ACC
PHY INFO
FIRST SABM
UA
HO CMP
HO CMP
CLR CMD
CLR CMP
BSC2
A: Incoming external inter-cell handover requests
B: Incoming external inter-cell handover responses
Table 12-49 lists the counter classification of Incoming External Inter-Cell HandoverMeasurement per Cell.
Table 12-49 Counter classification of Incoming External Inter-Cell Handover Measurement perCell
Counter Classification Section
Incoming External Inter-Cell Handover Requests per Cell 12.13.2
Incoming External Inter-Cell Handover Responses per Cell 12.13.3
Failed Incoming External Inter-Cell Handovers per Cell 12.13.4
Incoming External Inter-Cell Handover Detection Messages Received by BSC per Cell
12.13.5
Incoming External Inter-Cell Handover Analyzed Measurement per Cell 12.13.6
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12.13.2 Incoming External Inter-Cell Handover Requests per Cell
Counter
Table 12-50 lists the counters of Incoming External Inter-Cell Handover Requests per Cell.
Table 12-50 Counters of Incoming External Inter-Cell Handover Requests per Cell
Number Counter
1 H3400W: Incoming External Inter-Cell Handover Requests (SDCCH)(900/850-900/850)
2 H3400X: Incoming External Inter-Cell Handover Requests (SDCCH)
(1800/1900-1800/1900)
3 H3400Y: Incoming External Inter-Cell Handover Requests (SDCCH)
(900/850-1800/1900)
4 H3400Z: Incoming External Inter-Cell Handover Requests (SDCCH)(1800/1900-900/850)
5 H3409W: Incoming External Inter-Cell Handover Requests (TCH) (900/850-900/850)
6 H3409X: Incoming External Inter-Cell Handover Requests (TCH)(1800/1900-1800/1900)
7 H3409Y: Incoming External Inter-Cell Handover Requests (TCH) (900/850-1800/1900)
8 H3409Z: Incoming External Inter-Cell Handover Requests (TCH)(1800/1900-900/850)
9 H3401B: Incoming External Inter-Cell Handover TCH Requests (TCHFOnly)
10 H3401C: Incoming External Inter-Cell Handover TCH Requests (TCHHOnly)
11 H3401D: Incoming External Inter-Cell Handover TCH Requests (TCHFPreferred, Channel Type Unchangeable)
12 H3401E: Incoming External Inter-Cell Handover TCH Requests (TCHH
Preferred, Channel Type Unchangeable)
13 H3401G: Incoming External Inter-Cell Handover TCH Requests (TCHF
Preferred, Channel Type Changeable)
14 H3401H: Incoming External Inter-Cell Handover TCH Requests (TCHHPreferred, Channel Type Changeable)
15 H3401F: Incoming External Inter-Cell Handover TCH Requests (TCHF orTCHH, Channel Type Unchangeable)
16 H3401I: Incoming External Inter-Cell Handover TCH Requests (TCHF or
TCHH, Channel Type Changeable)
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference 12 Call Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 12-127
Meaning
The handover algorithm in BSC1 notifies BSC1 to initiate an inter-cell handover. If the source
cell and the target cell are controlled by two BSCs, an external inter-cell handover is initiated.
The measurement is performed in the target cell. The measurement is based on the channel
type, the crossing of frequency bands, and the TCH seizure type.
Along with Incoming External Inter-Cell Handover Responses per Cell and Failed Incoming
External Inter-Cell Handovers per Cell, the counters show the performance of incomingexternal inter-cell handovers. Along with Outgoing External Inter-Cell Handover
Measurement per Cell, the counters show the performance of external inter-cell handovers.
The channel involved in the measurement is of the following types:
SDCCH
TCH
The crossing of frequency bands is of the following types:
900/850 to 900/850
1800/1900 to 1800/1900
900/850 to 1800/1900
1800/1900 to 900/850
The TCH seizure is of the following types:
TCHF only
TCHH only
TCHF preferred, channel type unchangeable
TCHH preferred, channel type unchangeable
TCHF preferred, channel type changeable
TCHH Preferred, Channel Type Changeable
TCHF or TCHH, Channel Type Unchangeable
TCHF or TCHH, Channel Type Changeable
Trigger Point
As shown in Figure 12-18 (A), the measurement is triggered when BSC2 receives an HO
REQ message from the MSC. The measurement is based on the channel type, the crossing offrequency bands, and the TCH seizure type.
Formula
None.
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Performance Counter Reference
12-128 Huawei Technologies Proprietary Issue 03 (2007-05-09)
12.13.3 Incoming External Inter-Cell Handover Responses perCell
CounterTable 12-51 lists the counters of Incoming External Inter-Cell Handover Responses per Cell.
Table 12-51 Counters of Incoming External Inter-Cell Handover Responses per Cell
Number Counter
1 H3410W: Incoming External Inter-Cell Handover Responses (SDCCH)
(900/850-900/850)
2 H3410X: Incoming External Inter-Cell Handover Responses (SDCCH)(1800/1900-1800/1900)
3 H3410Y: Incoming External Inter-Cell Handover Responses (SDCCH)(900/850-1800/1900)
4 H3410Z: Incoming External Inter-Cell Handover Responses (SDCCH)(1800/1900-900/850)
5 H3417W: Incoming External Inter-Cell Handover Responses (TCHF)
(900/850-900/850)
6 H3417X: Incoming External Inter-Cell Handover Responses (TCHF)(1800/1900-1800/1900)
7 H3417Y: Incoming External Inter-Cell Handover Responses (TCHF) (900/850-
1800/1900)
8 H3417Z: Incoming External Inter-Cell Handover Responses (TCHF)
(1800/1900-900/850)
9 H3418W: Incoming External Inter-Cell Handover Responses (TCHH)
(900/850-900/850)
10 H3418X: Incoming External Inter-Cell Handover Responses (TCHH)(1800/1900-1800/1900)
11 H3418Y: Incoming External Inter-Cell Handover Responses (TCHH)
(900/850-1800/1900)
12 H3418Z: Incoming External Inter-Cell Handover Responses (TCHH)
(1800/1900-900/850)
Meaning
After BSC2 receives an HO REQ message, it requests for a channel from the target cell and
activates it. BSC2 requests for speech service resources. If the request succeeds, the BSC2returns an HO REQ ACK message to the MSC. The measurement is performed in the target
cell. The measurement is based on the channel type and the crossing of frequency bands.
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Performance Counter Reference 12 Call Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 12-129
Along with Incoming External Inter-Cell Handover Requests per Cell and Failed IncomingInternal Inter-Cell Handovers per Cell, the counters show the performance of incomingexternal inter-cell handovers. Along with Outgoing External Inter-Cell Handover
Measurement per Cell, the counters show the performance of external inter-cell handovers.
The channel involved in the measurement is of the following types:
SDCCH
TCHF
TCHH
The crossing of frequency bands is of the following types:
900/850 to 900/850
1800/1900 to 1800/1900
900/850 to 1800/1900
1800/1900 to 900/850
Trigger Point
As shown in Figure 12-18 (B), the measurement is triggered when BSC2 sends an HO REQ
ACK to the MSC. The measurement is based on the channel type and the crossing of
frequency bands.
Formula
None.
12.13.4 Failed Incoming External Inter-Cell Handovers per CellCounter
Table 12-52 lists the counters of Failed Incoming External Inter-Cell Handovers per Cell.
Table 12-52 Counters of Failed Incoming External Inter-Cell Handovers per Cell
Number Counter
1 H3420W: Failed Incoming External Inter-Cell Handovers (SDCCH)(900/850-900/850)
2 H3420X: Failed Incoming External Inter-Cell Handovers (SDCCH)(1800/1900-1800/1900)
3 H3420Y: Failed Incoming External Inter-Cell Handovers (SDCCH)(900/850-1800/1900)
4 H3420Z: Failed Incoming External Inter-Cell Handovers (SDCCH)(1800/1900-900/850)
5 H3429W: Failed Incoming External Inter-Cell Handovers (TCH) (900/850-
900/850)
6 H3429X: Failed Incoming External Inter-Cell Handovers (TCH) (1800/1900-
1800/1900)
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Performance Counter Reference
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Number Counter
7 H3429Y: Failed Incoming External Inter-Cell Handovers (TCH) (900/850-
1800/1900)
8 H3429Z: Failed Incoming External Inter-Cell Handovers (TCH) (1800/1900-900/850)
9 H342I: Failed Incoming External Inter-Cell Handovers (Invalid Message)
10 H3420A: Failed Incoming External Inter-Cell Handovers (ChannelUnavailable) (SDCCH)
11 H3429A: Failed Incoming External Inter-Cell Handovers (ChannelUnavailable) (TCH)
12 H342E: Failed Incoming External Inter-Cell Handovers (CIC Unavailable)
13 H342F: Failed Incoming External Inter-Cell Handovers (CIC Allocated)
14 H342B: Failed Incoming External Inter-Cell Handovers (Terrestrial ResourceRequest Failed)
15 H342H: Failed Incoming External Inter-Cell Handovers (Clear CommandsSent by MSC)
16 CH342D: External Incoming Cell Handover Failures (Failed to Seize a New
Channel)
17 H3420C: Failed Incoming External Inter-Cell Handovers (Timer Expired)(SDCCH)
18 H3429Cb: Failed Incoming External Inter-Cell Handovers (Timer Expired)(TCH) (Signaling Channel)
19 H3429Ca: Failed Incoming External Inter-Cell Handovers (Timer Expired)(TCH) (Traffic Channel)
Meaning
In the incoming external inter-cell handover procedure, BSC2 measures the related counter
when receiving a message that causes a handover failure. The measurement is performed in
the target cell. The measurement is based on the channel type, the crossing of frequency bands,and the failure cause.
Along with Incoming External Inter-Cell Handover Requests per Cell and Incoming External
Inter-Cell Handover Responses per Cell, the counters show the performance of incomingexternal inter-cell handovers. Along with Outgoing External Inter-Cell HandoverMeasurement per Cell, the counters show the performance of external inter-cell handovers.
The channel involved in the measurement is of the following types:
SDCCH
TCH (traffic channel or signaling channel)
The crossing of frequency bands is of the following types:
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Performance Counter Reference 12 Call Measurement
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900/850 to 900/850
1800/1900 to 1800/1900
900/850 to 1800/1900
1800/1900 to 900/850
The failure causes consist of the following:
Invalid message
Channel unavailable
CIC unavailable
CIC allocated
Terrestrial resource request failed
Clear commands sent by MSC
Seizure of a new channel failed
Timer expired
Trigger Point
Figure 12-19 shows the trigger points of the counters of Failed Incoming External Inter-Cell
Handovers per Cell.
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Performance Counter Reference
12-132 Huawei Technologies Proprietary Issue 03 (2007-05-09)
Figure 12-19 Trigger points of the counters of Failed Incoming External Inter-Cell Handovers perCell BSC
BTS1 BSC1MS
HO CMD
MSMSC BTS2
B
HO
REQ ACK
MR FROM MS
HO RQD
HO REQ
CHAN ACTIV
CHAN
ACTIV ACK
HO DETECTHO CMD
HO DETECT
EST IND
HO ACC
PHY INFO
FIRST SABM
UA
HO CMP
HO CMP
CLR CMD
CLR CMP
BSC2
In the
incoming
external
inter-cell
handover
procedure
A
E
C
D
TIME OUT
F
A: Failed Incoming External Inter-Cell Handovers
B: Failed Incoming External Inter-Cell Handovers (Invalid Message)
C: Failed Incoming External Inter-Cell Handovers (Channel Unavailable)
D: Failed Incoming External Inter-Cell Handovers (Terrestrial Resource Request Failed, CIC
Unavailable, CIC Allocated)
E: Failed Incoming External Inter-Cell Handovers (Clear Commands Sent by MSC), External
Incoming Cell Handover Failures (Failed to Seize a New Channel)
F: Failed Incoming External Inter-Cell Handovers (Timer Expired)
The trigger points of the counters are as follows:
Failed Incoming External Inter-Cell Handovers (Invalid Message)
BSC2 receives an HO REQ message from the MSC and decodes it. The measurement istriggered when BSC2 detects that the message is invalid.
Failed Incoming External Inter-Cell Handovers (Channel Unavailable)
BSC2 receives an HO REQ message from the MSC and decodes it. BSC2 then requestsfor a channel from the target cell. The measurement is triggered when the target cell
returns a request failure message with the cause of channel unavailable. The
measurement is based on the channel type.
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference 12 Call Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 12-133
The channel involved in the measurement is of the following types:
− SDCCH
− TCH
Failed Incoming External Inter-Cell Handovers (Terrestrial Resource Request Failed,
CIC Unavailable, CIC Allocated)
BSC2 receives an HO REQ message from the MSC and decodes it. BSC2 then requests
for a channel from the target cell. If the request succeeds, BSC2 sends a CHAN ACTIVmessage to the target cell. After receiving a CHAN ACTIV ACK message, BSC2requests for the terrestrial resources and terrestrial link resources about speech services.
− If the request for terrestrial resources fails, the measurement of Failed IncomingExternal Inter-Cell Handovers (Terrestrial Resource Request Failed) is triggered.
− The CIC resources on the A interface is a key factor of the terrestrial resource request.
The MSC sends BSC2 an HO REQ message that carries the CIC. If BSC2 detects
that the CIC is unavailable, the measurement of Failed Incoming External Inter-CellHandovers (Terrestrial Resource Request Failed, CIC Unavailable is triggered.
− If BSC2 detects that the CIC is already allocated, the measurement of Failed
Incoming External Inter-Cell Handovers (Terrestrial Resource Request Failed, CICAllocated) is triggered.
Failed Incoming External Inter-Cell Handovers (Timer Expired)
In the incoming external inter-cell handover procedure, the measurement is triggered
when BSC2 receives a TIME OUT message. The measurement is based on the channeltype and the TCH service type.
The channel involved in the measurement is of the following types:
− SDCCH
− TCH
The TCH is of the following service types:− TCH service channel
− TCH signaling channel
Failed Incoming External Inter-Cell Handovers (Clear Commands Sent by MSC)
In the incoming external inter-cell handover procedure, the measurement is triggeredwhen BSC2 receives a CLR CMD message from the MSC.
External Incoming Cell Handover Failures (Failed to Seize a New Channel)
As shown in point E in Figure 12-19, during an external incoming cell handover procedure, this handover fails when BSC2 receives the CLR CMD from the MSC. If the
cause for the clearance is radio interface failure, the measurement of this counter is
triggered. Failed Incoming External Inter-Cell Handovers
In the incoming external inter-cell handover procedure, the measurement is triggeredwhen the handover fails.
Formula
None.
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Performance Counter Reference
12-134 Huawei Technologies Proprietary Issue 03 (2007-05-09)
12.13.5 Incoming External Inter-Cell Handover DetectionMessages Received by BSC per Cell
CounterTable 12-53 lists the counters of Incoming External Inter-Cell Handover Detection Messages
Received by BSC per Cell.
Table 12-53 Counters of Incoming External Inter-Cell Handover Detection Messages Received byBSC per Cell
Number Counter
1 H3440: Incoming External Inter-Cell Handover Detection Messages Received
by BSC (SDCCH)
2 H3447: Incoming External Inter-Cell Handover Detection Messages Received by BSC (TCHF)
3 H3448: Incoming External Inter-Cell Handover Detection Messages Received by BSC (TCHH)
Meaning
The counters measure the number of times BSC2 receives an HO DETECT message. Themeasurement is performed in the target cell.
The channel involved in the measurement is of the following types:
SDCCH
TCHF
TCHH
Trigger Point
As shown in Figure 12-19, the measurement is triggered when BSC2 receives an HO
DETECT message. The measurement is based on the channel type.
Formula None.
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference 12 Call Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 12-135
12.13.6 Incoming External Inter-Cell Handover AnalyzedMeasurement per Cell
CounterTable 12-54 lists the counters of Incoming External Inter-Cell Handover AnalyzedMeasurement per Cell.
Table 12-54 Counters of Incoming External Inter-Cell Handover Analyzed Measurement per Cell
Number Counter
1 CH340: Incoming External Inter-Cell Handover Requests
2 CH343: Successful Incoming External Inter-Cell Handovers
3 CH341: Incoming External Inter-Cell Handover Responses
4 TH343: Success Rate of Incoming External Inter-Cell Handover
5 CH3401: Incoming External Inter-Cell Handover TCH Requests
6 CH344: Incoming External Inter-Cell Handover Detection Messages Received by BSC
7 CH342: Failed Incoming External Inter-Cell Handovers
8 CH342C: Failed Incoming External Inter-Cell Handovers (Timer Expired)
9 CH346: Incoming External Inter-Cell Handover Requests(Better Cell)
Meaning
None.
Trigger Point
None.
Formula
Incoming External Inter-Cell Handover Requests =
[Incoming External Inter-Cell Handover Requests (SDCCH) (900/850-900/850)] +
[Incoming External Inter-Cell Handover Requests (SDCCH) (1800/1900-1800/1900)] +
[Incoming External Inter-Cell Handover Requests (SDCCH) (900/850-1800/1900)] +
[Incoming External Inter-Cell Handover Requests (SDCCH) (1800/1900-900/850)] +
[Incoming External Inter-Cell Handover Requests (TCH) (900/850-900/850)] +
[Incoming External Inter-Cell Handover Requests (TCH) (1800/1900-1800/1900)] +
[Incoming External Inter-Cell Handover Requests (TCH) (900/850-1800/1900)] +
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[Incoming External Inter-Cell Handover Requests (TCH) (1800/1900-900/850)]
Successful Incoming External Inter-Cell Handovers =
([Incoming External Inter-Cell Handover Requests (SDCCH) (900/850-900/850)] +
[Incoming External Inter-Cell Handover Requests (SDCCH) (1800/1900-1800/1900)] +
[Incoming External Inter-Cell Handover Requests (SDCCH) (900/850-1800/1900)] +
[Incoming External Inter-Cell Handover Requests (SDCCH) (1800/1900-900/850)] +
[Incoming External Inter-Cell Handover Requests (TCH) (900/850-900/850)] +
[Incoming External Inter-Cell Handover Requests (TCH) (1800/1900-1800/1900)] +
[Incoming External Inter-Cell Handover Requests (TCH) (900/850-1800/1900)] +
[Incoming External Inter-Cell Handover Requests (TCH) (1800/1900-900/850)])
-([Failed Incoming External Inter-Cell Handovers (SDCCH) (900/850-900/850)] +
[Failed Incoming External Inter-Cell Handovers (SDCCH) (1800/1900-1800/1900)] +
[Failed Incoming External Inter-Cell Handovers (SDCCH) (900/850-1800/1900)] +
[Failed Incoming External Inter-Cell Handovers (SDCCH) (1800/1900-900/850)] +
[Failed Incoming External Inter-Cell Handovers (TCH) (900/850-900/850)] +
[Failed Incoming External Inter-Cell Handovers (TCH) (1800/1900-1800/1900)] +
[Failed Incoming External Inter-Cell Handovers (TCH) (900/850-1800/1900)] +
[Failed Incoming External Inter-Cell Handovers (TCH) (1800/1900-900/850)])
Incoming External Inter-Cell Handover Responses =
[Incoming External Inter-Cell Handover Responses (SDCCH) (900/850-900/850)] +
[Incoming External Inter-Cell Handover Responses (SDCCH) (1800/1900-1800/1900)] +
[Incoming External Inter-Cell Handover Responses (SDCCH) (900/850-1800/1900)] +
[Incoming External Inter-Cell Handover Responses (SDCCH) (1800/1900-900/850)] +
[Incoming External Inter-Cell Handover Responses (TCHF) (900/850-900/850)] +
[Incoming External Inter-Cell Handover Responses (TCHF) (1800/1900-1800/1900)] +
[Incoming External Inter-Cell Handover Responses (TCHF) (900/850-1800/1900)] +
[Incoming External Inter-Cell Handover Responses (TCHF) (1800/1900-900/850)] +
[Incoming External Inter-Cell Handover Responses (TCHH) (900/850-900/850)] +
[Incoming External Inter-Cell Handover Responses (TCHH) (1800/1900-1800/1900)] +
[Incoming External Inter-Cell Handover Responses (TCHH) (900/850-1800/1900)] +
[Incoming External Inter-Cell Handover Responses (TCHH) (1800/1900-900/850)]
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Performance Counter Reference 12 Call Measurement
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Success Rate of Incoming External Inter-Cell Handover =
[Successful Incoming External Inter-Cell Handovers]*{100}/[Incoming External Inter-Cell
Handover Requests]
Incoming External Inter-Cell Handover TCH Requests =
[Incoming External Inter-Cell Handover TCH Requests (TCHF Only)] +
[Incoming External Inter-Cell Handover TCH Requests (TCHH Only)] +
[Incoming External Inter-Cell Handover TCH Requests (TCHF Preferred, Channel TypeUnchangeable)] +
[Incoming External Inter-Cell Handover TCH Requests (TCHH Preferred, Channel Type
Unchangeable)] +
[Incoming External Inter-Cell Handover TCH Requests (TCHF Preferred, Channel TypeChangeable)] +
[Incoming External Inter-Cell Handover TCH Requests (TCHH Preferred, Channel Type
Changeable)] +
[Incoming External Inter-Cell Handover TCH Requests (TCHF or TCHH, Channel TypeUnchangeable)] +
[Incoming External Inter-Cell Handover TCH Requests (TCHF or TCHH, Channel TypeChangeable)]
Incoming External Inter-Cell Handover Detection Messages Received by BSC =
[Incoming External Inter-Cell Handover Detection Messages Received by BSC (SDCCH)] +
[Incoming External Inter-Cell Handover Detection Messages Received by BSC (TCHF)] +
[Incoming External Inter-Cell Handover Detection Messages Received by BSC (TCHH)]
Failed Incoming External Inter-Cell Handovers =
[Failed Incoming External Inter-Cell Handovers (SDCCH) (900/850-900/850)] +
[Failed Incoming External Inter-Cell Handovers (SDCCH) (1800/1900-1800/1900)] +
[Failed Incoming External Inter-Cell Handovers (SDCCH) (900/850-1800/1900)] +
[Failed Incoming External Inter-Cell Handovers (SDCCH) (1800/1900-900/850)] +
[Failed Incoming External Inter-Cell Handovers (TCH) (900/850-900/850)] +
[Failed Incoming External Inter-Cell Handovers (TCH) (1800/1900-1800/1900)] +
[Failed Incoming External Inter-Cell Handovers (TCH) (900/850-1800/1900)] +
[Failed Incoming External Inter-Cell Handovers (TCH) (1800/1900-900/850)]
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Performance Counter Reference
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Failed Incoming External Inter-Cell Handovers (Timer Expired) =
[Failed Incoming External Inter-Cell Handovers (Timer Expired) (SDCCH)] +
[Failed Incoming External Inter-Cell Handovers (Timer Expired) (TCH) (Signaling Channel)]
+[Failed Incoming External Inter-Cell Handovers (Timer Expired) (TCH) (Traffic Channel)]
12.14 Outgoing External Inter-Cell HandoverMeasurement per Cell
12.14.1 Overview
Outgoing External Inter-Cell Handover Measurement per Cell can be classified into Outgoing
External Inter-Cell Handover (Excluding Directed Retry) and Outgoing External Inter-CellHandover (Directed Retry).
Outgoing external inter-cell handover (excluding directed retry)
As shown in Figure 12-20, after the BSC receives measurement reports from the MS, it uses
the handover algorithm to decide whether a handover is required or not. If a handover is
required and the source cell (the current cell where the MS is located) and the target cell (thecell where the MS is located after the handover) are controlled by two BSCs, an externalinter-cell handover is initiated.
The measurement of outgoing external inter-cell handover (excluding directed retry) is performed in the source cell.
The procedure of the outgoing external inter-cell handover (excluding directed retry) is as
follows:
Step 1 BSC1 initiates an external inter-cell handover based on the handover algorithm.
Step 2 BSC1 sends an HO RQD message to the MSC.
Step 3 Based on the HO RQD message and the relation between the cell and the BSC, the MSC findsBSC2 and sends an HO REQ message to BSC2.
Step 4 BSC2 requests for a traffic channel from the target cell. After the request succeeds, BSC2sends a CHAN ACTIV message to the target cell. After receiving a CHAN ACTIV ACKmessage from the target cell, BSC2 requests for speech service resources. After the request
succeeds, BSC2 sends the MSC an HO REQ ACK message to notify the MSC that the targetcell is ready for the MS access.
Step 5 The MSC sends an HO CMD message to BSC1 and BSC1 forwards this message to the MS.
This message is used to request the MS to access the target cell.
Step 6 The MS sends the target cell an HO ACC message to attempt to access the target cell. BTS2
sends an HO DETECT message to BSC2 and a PHY INFO message to the MS.
Step 7 The MS sends a FIRST SABM frame to BTS2. After receiving this frame, BTS2 sends an
EST IND message to BSC2 and returns a UA frame to the MS.
Step 8 After the MS accesses the target cell, it sends an HO CMP message to BSC2 and BSC2
forwards this message to the MSC.
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Step 9 The MSC sends a CLR CMD message to BSC1 and the BSC1 releases the terrestrialresources in the source cell.
Step 10 BSC1 sends a CLR CMP message to the MSC.
----End
Figure 12-20 Outgoing external inter-cell handover (excluding directed retry)
BTS1 BSC1MS
HO CMD
MSMSC BTS2
A
HO REQ ACK
MR FROM MS
HO RQD
HO REQ
CHAN ACTIV
CHAN
ACTIV ACK
HO DETECT
HO CMD
HO DETECT
EST IND
HO ACC
PHY INFO
FIRST SABM
UA
HO CMP
HO CMP
CLR CMD
CLR CMP
BSC2
B
A: Outgoing external inter-cell handover request (excluding directed retry)
B: Outgoing external inter-cell handover response (excluding directed retry)
Outgoing external inter-cell handover (directed retry)
The procedure is as follows:
Step 1 As shown in Figure 12-21, the MS sends a CHAN RQD message to BTS1 and BTS1
forwards it to BSC1.
Step 2 BSC1 requests for a signaling channel from the source cell. If the request succeeds, BSC1sends a CHAN ACTIV message to the source cell. After receiving a CHAN ACTIV ACKmessage from the source cell, BSC1 sends an IMM ASS CMD to the MS through the source
cell.
Step 3 The MS sends a FIRST ASBM frame to BTS1 and BTS1 returns a UA frame. After receiving
the FIRST ASBM frame, BTS1 sends an EST IND message to BSC1.
Step 4 BSC1 extracts the CM SERV REQ message carried in the EST IND message, encapsulates itinto a connection request (CR) message, and sends the CR message to the MSC.
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Performance Counter Reference
12-140 Huawei Technologies Proprietary Issue 03 (2007-05-09)
Step 5 The MSC returns a Connection Confirm (CC) message. The MM connection between the MSand the MSC is established.
Step 6 After the transmission of the CM SERV ACCEPT, SETUP, and CALL PROCEEDINGmessages, the MSC sends an ASSIGN REQ message to BSC1.
Step 7 BSC1 selects a kind of assignment procedure (normal assignment procedure, mode modify
procedure, directed retry procedure) based on the load of the source cell.
Step 8 If the subsequent services are unavailable or the subsequent services affect the existing
services because the cell load is too high, BSC1 selects the directed retry procedure. If thesource cell and the target cell are controlled by two BSCs, the directed retry is performed
through an external inter-cell handover procedure. If the measurement is performed in thesource cell, the outgoing external inter-cell handover procedure is initiated.
Step 9 BSC1 sends an HO RQD message to the MSC to initiate an external inter-cell handover.
Step 10 Based on the HO RQD message and the relation between the cell and the BSC, the MSC finds
BSC2 and sends an HO REQ message to BSC2.
Step 11 BSC2 requests for a channel from the target cell. After the request succeeds, BSC2 sends aCHAN ACTIV message to the target cell. After receiving a CHAN ACTIV ACK message
from the target cell, BSC2 requests for speech service resources. After the request succeeds,BSC2 sends the MSC an HO REQ ACK message to notify the MSC that the target cell is
ready for the MS access.
Step 12 The MSC sends an HO CMD message to BSC1 and BSC1 forwards this message to the MS.
This message is used to request the MS to access the target cell.
Step 13 The MS sends the target cell an HO ACC message to attempt to access the target cell. BTS2
sends an HO DETECT message to BSC2 and a PHY INFO message to the MS.
Step 14 BSC2 sends an HO DETECT message to the MSC. The MS sends a FIRST SABM frame toBTS2. After receiving this frame, BTS2 returns a UA frame to the MS and sends an EST INDmessage to BSC2.
Step 15 The MS sends an HO CMP message to BSC2 and BSC2 forwards this message to the MSC.
Step 16 The MSC sends a CLR CMD message to BSC1 and the BSC1 releases the terrestrialresources in the source cell.
Step 17 BSC1 sends a CLR CMP message to the MSC.
----End
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference 12 Call Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 12-141
Figure 12-21 Outgoing external inter-cell handover (Directed Retry)
BTS1(CELL1) BSC1MS
UA EST IND(CM
SERV REQ)
MSBTS2(CELLO)
A
B
CHAN ACTIV
FIRST SABM
FIRST SABM
CHAN
ACTIV ACK
HO CMD
CHAN RED
CHAN REQ
IMM
ASS CMD
CC
CR(CM
SERV REQ)
CM SERV
ACCEPT
SETUP
CALL
PROCEEDING
ASSIGN REQ
CHAN ACTIV
CHAN
ACTIV ACK
UA
HO ACC
PHY INFO
HO DETECT
EST IND
HO CMP
MSC BSC2
HO RQD
HO REQ
HO REQ ACK
HO CMD
HO DETECT
HO CMP
CLR CMD
CLR CMP
A: Outgoing external inter-cell handover requests (Directed Retry)
B: Outgoing external inter-cell handover responses (Directed Retry)
Table 12-55 lists the counter classification of Outgoing External Inter-Cell Handover
Measurement per Cell.
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12 Call Measurement
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Performance Counter Reference
12-142 Huawei Technologies Proprietary Issue 03 (2007-05-09)
Table 12-55 Counter classification of outgoing External Inter-Cell Handover Measurement perCell
Counter Classification Section
Outgoing External Inter-Cell Handover Requests per Cell 12.14.2
Outgoing External Inter-Cell Handover Commands per Cell 12.14.3
Failed Outgoing External Inter-Cell Handovers per Cell 12.14.4
Outgoing External Inter-Cell Handover Analyzed Measurement per Cell 12.14.5
12.14.2 Outgoing External Inter-Cell Handover Requests per Cell
CounterTable 12-56 lists the counters of Outgoing External Inter-Cell Handover Requests per Cell
(Excluding Directed Retry).
Table 12-56 Counters of Outgoing External Inter-Cell Handover Requests per Cell (ExcludingDirected Retry)
Number Counter
1 H3300W: Outgoing External Inter-Cell Handover Requests (SDCCH)(Excluding Directed Retry) (900/850-900/850)
2 H3300X: Outgoing External Inter-Cell Handover Requests (SDCCH)(Excluding Directed Retry) (1800/1900-1800/1900)
3 H3300Y: Outgoing External Inter-Cell Handover Requests (SDCCH)(Excluding Directed Retry) (900/850-1800/1900)
4 H3300Z: Outgoing External Inter-Cell Handover Requests (SDCCH)(Excluding Directed Retry) (1800/1900-900/850)
5 H3307W: Outgoing External Inter-Cell Handover Requests (TCHF) (Excluding
Directed Retry) (900/850-900/850)
6 H3307X: Outgoing External Inter-Cell Handover Requests (TCHF) (ExcludingDirected Retry) (1800/1900-1800/1900)
7 H3307Y: Outgoing External Inter-Cell Handover Requests (TCHF) (ExcludingDirected Retry) (900/850-1800/1900)
8 H3307Z: Outgoing External Inter-Cell Handover Requests (TCHF) (Excluding
Directed Retry) (1800/1900-900/850)
9 H3308W: Outgoing External Inter-Cell Handover Requests (TCHH)
(Excluding Directed Retry) (900/850-900/850)
10 H3308X: Outgoing External Inter-Cell Handover Requests (TCHH) (ExcludingDirected Retry) (1800/1900-1800/1900)
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference 12 Call Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 12-143
Number Counter
11 H3308Y: Outgoing External Inter-Cell Handover Requests (TCHH) (Excluding
Directed Retry) (900/850-1800/1900)
12 H3308Z: Outgoing External Inter-Cell Handover Requests (TCHH) (ExcludingDirected Retry) (1800/1900-900/850)
13 H330A: Outgoing External Inter-Cell Handover Requests (Uplink Quality)
14 H330B: Outgoing External Inter-Cell Handover Requests (Downlink Quality)
15 H330C: Outgoing External Inter-Cell Handover Requests (Uplink Strength)
16 H330D: Outgoing External Inter-Cell Handover Requests (Downlink Strength)
17 H330E: Outgoing External Inter-Cell Handover Requests (Timing Advance)
18 H330F: Outgoing External Inter-Cell Handover Requests (Better Cell)
19 H330G: Outgoing External Inter-Cell Handover Requests (Load)
20 H330H: Outgoing External Inter-Cell Handover Requests (Rapid Level Drop)
21 H330I: Outgoing External Inter-Cell Handover Requests (MSC Intervention)
22 H330J: Outgoing External Inter-Cell Handover Requests (OM Intervention)
23 H330L: Outgoing External Inter-Cell Handover Requests (Other Causes)
Table 12-57 lists the counters of Outgoing External Inter-Cell Handover Requests per Cell
(Directed Retry).
Table 12-57 Counters of Outgoing External Inter-Cell Handover Requests per Cell (DirectedRetry)
Number Counter
1 H3301W: Outgoing External Inter-Cell Handover Requests (Directed Retry)(900/850-900/850)
2 H3301X: Outgoing External Inter-Cell Handover Requests (Directed Retry)(1800/1900-1800/1900)
3 H3301Y: Outgoing External Inter-Cell Handover Requests (Directed Retry)(900/850-1800/1900)
4 H3301Z: Outgoing External Inter-Cell Handover Requests (Directed Retry)
(1800/1900-900/850)
Table 12-58 lists the counters of Outgoing External Inter-Cell Handover Requests per Cell
(Including Directed Retry).
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Performance Counter Reference
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Table 12-58 Counters of Outgoing External Inter-Cell Handover Requests per Cell (IncludingDirected Retry)
Number Counter
1 H3303: Outgoing External Inter-Cell Handover Requests (DifferentSignaling Points)
Meaning
The descriptions of the counters are as follows:
Outgoing External Inter-Cell Handover Requests (Excluding Directed Retry)
The counters measure the number of outgoing external inter-cell handover requestsinitiated by the handover algorithm. The measurement is performed in the source cell.
The measurement is based on the channel type, different signaling points, and thehandover cause.
Along with Outgoing External Inter-Cell Handover Commands per Cell and Failed
Outgoing External Inter-Cell Handovers per Cell, the counters show the performance ofoutgoing external inter-cell handover. Along with Incoming External Inter-CellHandover Measurement per Cell, the counters show the performance of external inter-cell handovers.
The channel involved in the measurement is of the following types:
− SDCCH
− TCHF
− TCHH
The handover between different signaling points in a BSC is also called outgoingexternal inter-cell handover.
The handover causes consist of the following:
− Uplink quality
− Downlink quality
− Uplink strength
− Downlink strength
− Timing advance
− Better cell
−
Load− Rapid level drop
− MSC intervention
− OM intervention
− EDGE coverage
− Other causes
Outgoing External Inter-Cell Handover Requests (Directed Retry)
The counters measure the number of outgoing external inter-cell handover requests in thedirected retry procedure.
Along with Outgoing External Inter-Cell Handover Commands per Cell and Failed
Outgoing External Inter-Cell Handovers per Cell, the counters show the performance of
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference 12 Call Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 12-145
outgoing external inter-cell handovers. Along with Incoming External Inter-CellHandover Measurement per Cell, the counters show the performance of external inter-cell handovers.
Trigger PointThe trigger points of the counters are as follows:
Outgoing External Inter-Cell Handover Requests (Excluding Directed Retry)
As shown in Figure 12-20 (A), the measurement is triggered when the BSC decides toinitiate an outgoing external inter-cell handover based on the measurement reports. The
measurement is based on the channel type, different signaling points, and the handovercause.
Outgoing External Inter-Cell Handover Requests (Directed Retry)
As shown in Figure 12-21 (A), the measurement is triggered when the BSC initiates adirected retry procedure.
Formula
None.
12.14.3 Outgoing External Inter-Cell Handover Commands perCell
Counter
Table 12-59 lists the counters of Outgoing External Inter-Cell Handover Commands per Cell
(Excluding Directed Retry).
Table 12-59 Counters of Outgoing External Inter-Cell Handover Commands per Cell (ExcludingDirected Retry)
Number Counter
1 H3310W: Outgoing External Inter-Cell Handover Commands (SDCCH)(Excluding Directed Retry) (900/850-900/850)
2 H3310X: Outgoing External Inter-Cell Handover Commands (SDCCH)(Excluding Directed Retry) (1800/1900-1800/1900)
3 H3310Y: Outgoing External Inter-Cell Handover Commands (SDCCH)(Excluding Directed Retry) (900/850-1800/1900)
4 H3310Z: Outgoing External Inter-Cell Handover Commands (SDCCH)(Excluding Directed Retry) (1800/1900-900/850)
5 H3317W: Outgoing External Inter-Cell Handover Commands (TCHF)(Excluding Directed Retry) (900/850-900/850)
6 H3317X: Outgoing External Inter-Cell Handover Commands (TCHF)(Excluding Directed Retry) (1800/1900-1800/1900)
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Performance Counter Reference
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Number Counter
7 H3317Y: Outgoing External Inter-Cell Handover Commands (TCHF)
(Excluding Directed Retry) (900/850-1800/1900)
8 H3317Z: Outgoing External Inter-Cell Handover Commands (TCHF)(Excluding Directed Retry) (1800/1900-900/850)
9 H3318W: Outgoing External Inter-Cell Handover Commands (TCHH)(Excluding Directed Retry) (900/850-900/850)
10 H3318X: Outgoing External Inter-Cell Handover Commands (TCHH)
(Excluding Directed Retry) (1800/1900-1800/1900)
11 H3318Y: Outgoing External Inter-Cell Handover Commands (TCHH)(Excluding Directed Retry) (900/850-1800/1900)
12 H3318Z: Outgoing External Inter-Cell Handover Commands (TCHH)
(Excluding Directed Retry) (1800/1900-900/850)
13 H331A: Outgoing External Inter-Cell Handover Commands (Uplink Quality)
14 H331B: Outgoing External Inter-Cell Handover Commands (DownlinkQuality)
15 H331C: Outgoing External Inter-Cell Handover Commands (Uplink Strength)
16 H331D: Outgoing External Inter-Cell Handover Commands (DownlinkStrength)
17 H331E: Outgoing External Inter-Cell Handover Commands (Timing Advance)
18 H331F: Outgoing External Inter-Cell Handover Commands (Better Cell)
19 H331G: Outgoing External Inter-Cell Handover Commands (Load)
20 H331H: Outgoing External Inter-Cell Handover Commands (Rapid Level
Drop)
21 H331I: Outgoing External Inter-Cell Handover Commands (MSC Intervention)
22 H331J: Outgoing External Inter-Cell Handover Commands (OM Intervention)
23 H331L: Outgoing External Inter-Cell Handover Commands (Other Causes)
Table 12-60 lists the counters of Outgoing External Inter-Cell Handover Commands per Cell(Directed Retry).
Table 12-60 Counters of Outgoing External Inter-Cell Handover Commands per Cell (DirectedRetry)
Number Counter
1 H3311W: Outgoing External Inter-Cell Handover Commands (Directed Retry)
(900/850-900/850)
2 H3311X: Outgoing External Inter-Cell Handover Commands (Directed Retry)
(1800/1900-1800/1900)
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Performance Counter Reference 12 Call Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 12-147
Number Counter
3 H3311Y: Outgoing External Inter-Cell Handover Commands (Directed Retry)
(900/850-1800/1900)
4 H3311Z: Outgoing External Inter-Cell Handover Commands (Directed Retry)(1800/1900-900/850)
Table 12-61 lists the counters of Outgoing External Inter-Cell Handover Commands per Cell
(Including Directed Retry).
Table 12-61 Counters of Outgoing External Inter-Cell Handover Commands per Cell (Including
Directed Retry)
Number Counter
1 H3313: Outgoing External Inter-Cell Handover Commands (DifferentSignaling Points)
Meaning
The descriptions of the counters are as follows:
Outgoing External Inter-Cell Handover Commands (Excluding Directed Retry)
The counters measure the number of times BSC1 sends an HO CMD message to the MS.
The measurement is based on the crossing of frequency bands, the channel type, differentsignaling points, and the handover cause.
Along with Outgoing External Inter-Cell Handover Requests per Cell and FailedOutgoing External Inter-Cell Handovers per Cell, the counters show the performance of
outgoing external inter-cell handovers. Along with Incoming External Inter-CellHandover Measurement per Cell, the counters show the performance of external inter-cell handovers.
The crossing of frequency bands is of the following types:
− 900/850 to 900/850
− 1800/1900 to 1800/1900
− 900/850 to 1800/1900
− 1800/1900 to 900/850
The channel involved in the measurement is of the following types:
− SDCCH
− TCHF
− TCHH
The handover between different signaling points in a BSC is also called outgoingexternal inter-cell handover.
The handover causes consist of the following:
− Uplink quality
− Downlink quality
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Performance Counter Reference
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− Uplink strength
− Downlink strength
− Timing advance
− Better cell
− Load
− Rapid level drop
− MSC intervention
− OM intervention
− EDGE coverage
− Other causes
Outgoing External Inter-Cell Handover Commands (Directed Retry)
In the directed retry procedure, the counters measure the number of times the BSC sends
an HO CMD message to the MS. The measurement is based on the crossing of frequency
bands and different signaling points.Along with Outgoing External Inter-Cell Handover Requests per Cell and FailedOutgoing External Inter-Cell Handovers per Cell, the counters show the performance of
outgoing external inter-cell handovers. Along with Incoming External Inter-CellHandover Measurement per Cell, the counters show the performance of external inter-cell handovers.
The crossing of frequency bands is of the following types:
− 900/850 to 900/850
− 1800/1900 to 1800/1900
− 900/850 to 1800/1900
− 1800/1900 to 900/850
The handover between different signaling points in a BSC is also called outgoingexternal inter-cell handover.
Trigger Point
The trigger points of the counters are as follows:
Outgoing External Inter-Cell Handover Commands (Excluding Directed Retry)
As shown in Figure 12-20 (B), in the outgoing external inter-cell (excluding directedretry) procedure, the measurement is triggered when the BSC sends an HO CMDmessage to the MS. The measurement is performed in the source cell. The measurement
is based on the crossing of frequency bands, the channel type, different signaling points,and the handover cause.
Outgoing External Inter-Cell Handover Commands (Directed Retry)
As shown in Figure 12-21 (B), in the outgoing external inter-cell handover (directed
retry) procedure, the measurement is triggered when the BSC sends an HO CMDmessage to the MS. The measurement is performed in the source cell. The measurementis based on the crossing of frequency bands and different signaling points.
Formula
None.
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference 12 Call Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 12-149
12.14.4 Failed Outgoing External Inter-Cell Handovers per Cell
Counter
Table 12-62 lists the counters of Failed Outgoing External Inter-Cell Handovers per Cell(Excluding Directed Retry).
Table 12-62 Counters of Failed Outgoing External Inter-Cell Handovers per Cell (Excluding
Directed Retry)
Number Counter
1 H3320W: Failed Outgoing External Inter-Cell Handovers (SDCCH) (900/850-900/850)
2 H3320X: Failed Outgoing External Inter-Cell Handovers (SDCCH)
(1800/1900-1800/1900)
3 H3320Y: Failed Outgoing External Inter-Cell Handovers (SDCCH) (900/850-1800/1900)
4 H3320Z: Failed Outgoing External Inter-Cell Handovers (SDCCH)(1800/1900-900/850)
5 H3327W: Failed Outgoing External Inter-Cell Handovers (TCHF) (900/850-
900/850)
6 H3327X: Failed Outgoing External Inter-Cell Handovers (TCHF) (1800/1900-
1800/1900)
7 H3327Y: Failed Outgoing External Inter-Cell Handovers (TCHF) (900/850-1800/1900)
8 H3327Z: Failed Outgoing External Inter-Cell Handovers (TCHF) (1800/1900-900/850)
9 H3328W: Failed Outgoing External Inter-Cell Handovers (TCHH) (900/850-
900/850)
10 H3328X: Failed Outgoing External Inter-Cell Handovers (TCHH) (1800/1900-
1800/1900)
11 H3328Y: Failed Outgoing External Inter-Cell Handovers (TCHH) (900/850-1800/1900)
12 H3328Z: Failed Outgoing External Inter-Cell Handovers (TCHH) (1800/1900-900/850)
13 H3322A: Failed Outgoing External Inter-Cell Handovers (Uplink Quality)
14 H3322B: Failed Outgoing External Inter-Cell Handovers (Downlink Quality)
15 H3322C: Failed Outgoing External Inter-Cell Handovers (Uplink Strength)
16 H3322D: Failed Outgoing External Inter-Cell Handovers (Downlink Strength)
17 H3322E: Failed Outgoing External Inter-Cell Handovers (Timing Advance)
18 H3322F: Failed Outgoing External Inter-Cell Handovers (Better Cell)
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Number Counter
19 H3322G: Failed Outgoing External Inter-Cell Handovers (Load)
20 H3322H: Failed Outgoing External Inter-Cell Handovers (Rapid Level Drop)
21 H3322I: Failed Outgoing External Inter-Cell Handovers (MSC Intervention)
22 H3322J: Failed Outgoing External Inter-Cell Handovers (OM Intervention)
23 H3322L: Failed Outgoing External Inter-Cell Handovers (Other Causes)
24 H332Da: Failed Outgoing External Inter-Cell Handovers (Reconnection to OldChannels) (Abnormal Release, Unspecified)
25 H332Db: Failed Outgoing External Inter-Cell Handovers (Reconnection to OldChannels) (Abnormal Release, Channel Unacceptable)
26 H332Dc: Failed Outgoing External Inter-Cell Handovers (Reconnection to Old
Channels) (Abnormal Release, Timer Expired)
27 H332Dd: Failed Outgoing External Inter-Cell Handovers (Reconnection to OldChannels) (Abnormal Release, No Activity on the Radio Path)
28 H332De: Failed Outgoing External Inter-Cell Handovers (Reconnection to Old
Channels) (Preemptive Release)
29 H332Df: Failed Outgoing External Inter-Cell Handovers (Reconnection to OldChannels) (Handover Failed, Timing Advance out of Range)
30 H332Dg: Failed Outgoing External Inter-Cell Handovers (Reconnection to OldChannels) (Channel Mode Unavailable)
31 H332Dh: Failed Outgoing External Inter-Cell Handovers (Reconnection to Old
Channels) (Frequency Unavailable)
32 H332Di: Failed Outgoing External Inter-Cell Handovers (Reconnection to Old
Channels) (Call Already Cleared)
33 H332Dj: Failed Outgoing External Inter-Cell Handovers (Reconnection to OldChannels) (Semantically Incorrect Message)
34 H332Dk: Failed Outgoing External Inter-Cell Handovers (Reconnection to Old
Channels) (Invalid Mandatory Information)
35 H332Dl: Failed Outgoing External Inter-Cell Handovers (Reconnection to Old
Channels) (Message Type Non-existent or Not Implemented)
36 H332Dm: Failed Outgoing External Inter-Cell Handovers (Reconnection to
Old Channels) (Message Type Not Compatible with Protocol State)
37 H332Dn: Failed Outgoing External Inter-Cell Handovers (Reconnection to OldChannels) (Conditional IE Error)
38 H332Do: Failed Outgoing External Inter-Cell Handovers (Reconnection to Old
Channels) (No Cell Allocation Available)
39 H332Dp: Failed Outgoing External Inter-Cell Handovers (Reconnection to Old
Channels) (Protocol Error Unspecified)
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Performance Counter Reference 12 Call Measurement
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Number Counter
40 H332Dq: Failed Outgoing External Inter-Cell Handovers (Reconnection to Old
Channels) (Other Causes)
41 H3320L: Failed Outgoing External Inter-Cell Handovers (T7 Expiry)(SDCCH)
42 H3327Lb: Failed Outgoing External Inter-Cell Handovers (T7 Expiry) (TCHF)(Signaling Channel)
43 H3328Lb: Failed Outgoing External Inter-Cell Handovers (T7 Expiry) (TCHH)
(Signaling Channel)
44 H3320C: Failed Outgoing External Inter-Cell Handovers (T8 Expiry)(SDCCH) (Excluding Directed Retry)
45 H3327Cb: Failed Outgoing External Inter-Cell Handovers (T8 Expiry) (TCHF)
(Signaling Channel)
46 H3328Cb: Failed Outgoing External Inter-Cell Handovers (T8 Expiry) (TCHH)(Signaling Channel)
Table 12-63 lists the counters of Failed Outgoing External Inter-Cell Handovers per Cell(Directed Retry).
Table 12-63 Counters of Failed Outgoing External Inter-Cell Handovers per Cell (Directed Retry)
Number Counter
1 H3321W: Failed Outgoing External Inter-Cell Handovers (Directed Retry)(900/850-900/850)
2 H3321X: Failed Outgoing External Inter-Cell Handovers (Directed Retry)
(1800/1900-1800/1900)
3 H3321Y: Failed Outgoing External Inter-Cell Handovers (Directed Retry)
(900/850-1800/1900)
4 H3321Z: Failed Outgoing External Inter-Cell Handovers (Directed Retry)(1800/1900-900/850)
5 H3321L: Failed Outgoing External Inter-Cell Handovers (T7 Expired)
(Directed Retry)
6 H3321C: Failed Outgoing External Inter-Cell Handovers (T8 Expired)
(Directed Retry)
Table 12-64 lists the counters of Failed Outgoing External Inter-Cell Handovers per Cell(Including Directed Retry).
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Table 12-64 Counters of Failed Outgoing External Inter-Cell Handovers per Cell (IncludingDirected Retry)
Number Counter
1 H332Ka: Failed Outgoing External Inter-Cell Handovers (Handover RequestRejected) (OM Intervention)
2 H332Kb: Failed Outgoing External Inter-Cell Handovers (Handover RequestRejected) (Equipment Failure)
3 H332Kc: Failed Outgoing External Inter-Cell Handovers (Handover Request
Rejected) (No Radio Resource Available)
4 H332Kd: Failed Outgoing External Inter-Cell Handovers (Handover Request
Rejected) (Requested Terrestrial Resource Unavailable)
5 H332Ke: Failed Outgoing External Inter-Cell Handovers (Handover RequestRejected) (BSS not Equipped)
6 H332Kf: Failed Outgoing External Inter-Cell Handovers (Handover RequestRejected) (Invalid Cell)
7 H332Kg: Failed Outgoing External Inter-Cell Handovers (Handover Request
Rejected) (Requested Transcoding/Rate Adaption Unavailable)
8 H332Kh: Failed Outgoing External Inter-Cell Handovers (Handover RequestRejected) (Circuit Pool Mismatch)
9 H332Ki: Failed Outgoing External Inter-Cell Handovers (Handover RequestRejected) (Requested Speech Version Unavailable)
10 H332Kj: Failed Outgoing External Inter-Cell Handovers (Handover RequestRejected) (Ciphering Algorithm not Supported)
11 H332Kk: Failed Outgoing External Inter-Cell Handovers (Handover Request
Rejected) (Terrestrial circuit already allocated)
12 H332Kl: Failed Outgoing External Inter-Cell Handovers (Handover RequestRejected) (Invalid Message)
13 H332Km: Failed Outgoing External Inter-Cell Handovers (Handover RequestRejected) (Protocol Error between BSS and MSC)
14 H332Kn: Failed Outgoing External Inter-Cell Handovers (Handover RequestRejected) (Other Causes)
15 H332Ha: Failed Outgoing External Inter-Cell Handovers (Clear CommandsSent by MSC) (Radio Interface Message Failure)
16 H332Hb: Failed Outgoing External Inter-Cell Handovers (Clear CommandsSent by MSC) (Radio Interface Failure)
17 H332Hc: Failed Outgoing External Inter-Cell Handovers (Clear CommandsSent by MSC) (OM Intervention)
18 H332Hd: Failed Outgoing External Inter-Cell Handovers (Clear CommandsSent by MSC) (Equipment Failure)
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference 12 Call Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 12-153
Number Counter
19 H332He: Failed Outgoing External Inter-Cell Handovers (Clear Commands
Sent by MSC) (Preemption)
20 H332Hf: Failed Outgoing External Inter-Cell Handovers (Clear CommandsSent by MSC) (Invalid Message)
21 H332Hg: Failed Outgoing External Inter-Cell Handovers (Clear CommandsSent by MSC) (Protocol Error between BSS and MSC)
22 H332Hh: Failed Outgoing External Inter-Cell Handovers (Clear Commands
Sent by MSC) (Other Causes)
23 H332G: Failed Outgoing External Inter-Cell Handovers (A-Interface Failure)
24 H3327La: Failed Outgoing External Inter-Cell Handovers (T7 Expired)(TCHF) (Traffic Channel)
25 H3328La: Failed Outgoing External Inter-Cell Handovers (T7 Expired)(TCHH) (Traffic Channel)
26 H3327Ca: Failed Outgoing External Inter-Cell Handovers (T8 Expired)(TCHF) (Traffic Channel)
27 H3328Ca: Failed Outgoing External Inter-Cell Handovers (T8 Expired)(TCHH) (Traffic Channel)
28 H332Ka: Failed Outgoing External Inter-Cell Handovers (Handover Request
Rejected) (OM Intervention)
29 H3323: Failed Outgoing External Inter-Cell Handovers (Different Signaling
Points)
Meaning Failed Outgoing External Inter-Cell Handovers (Excluding Directed Retry)
In the outgoing external inter-cell handover (excluding directed retry) procedure, the
BSC measures the related counter when the handover fails. The measurement is based onthe crossing of frequency bands, channel type, different signaling points, reject cause,
RR cause, clear command sent by MSC and A-interface failure, timer expired, andhandover cause.
Along with Outgoing External Inter-Cell Handover Requests per Cell and OutgoingExternal Inter-Cell Handover Commands per Cell, the counters show the performance of
outgoing external inter-cell handovers. Along with Incoming External Inter-Cell
Handover Measurement per Cell, the counters show the performance of external inter-cell handovers.
The crossing of frequency bands is of the following types:
− 900/850 to 900/850
− 1800/1900 to 1800/1900
− 900/850 to 1800/1900
− 1800/1900 to 900/850
The channel involved in the measurement is of the following types:
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12 Call Measurement
HUAWEI BSC6000 Base Station Controller
Performance Counter Reference
12-154 Huawei Technologies Proprietary Issue 03 (2007-05-09)
− SDCCH
− TCHF
− TCHH
The handover between different signaling points in a BSC is also called outgoing
external inter-cell handover.
The reject causes consist of the following:
− OM intervention
− Equipment failure
− No radio resource available
− Requested terrestrial resource unavailable
− BSS not equipped
− Invalid Cell
− Requested transcoding/rate adaption unavailable
− Circuit pool mismatch− Requested Speech version unavailable
− Ciphering algorithm not supported
− Terrestrial circuit already allocated
− Invalid message
− Protocol Error between BSS and MSC
− Other causes
The RR causes of reconnection to old channels consist of the following:
− Abnormal release, unspecified
−
Abnormal release, channel unacceptable− Abnormal release, timer expired
− Abnormal release, no activity on the radio path
− Preemptive release
− Handover failed, timing advance out of range
− Channel mode unavailable
− Frequency unavailable
− Call already cleared
− Semantically incorrect message
− Invalid mandatory information
− Message type non-existent or not implemented
− Message type not compatible with protocol state
− Conditional IE error
− No cell allocation available
− Protocol error unspecified
− Other causes
The clear commands sent by MSC and A-interface failure consist of the following:
− Radio interface message failure
− Radio interface failure
− OM intervention
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference 12 Call Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 12-155
− Equipment failure
− Preemption
− Invalid message
− Protocol Error between BSS and MSC
− Other causes
The A interface failure occurs when the message such as MSC reset and SCCP linksdisruption is sent on the A interface.
The timers involved in the measurement consist of T7 and T8. T7 is triggered to wait for
an HO CMD message from the MSC after BSC1 sends an HO RQD message to the MSC.
T8 is triggered to wait for a CLR CMD message from the MSC after BSC1 sends an HOCMD message to the MS through the source cell.
The handover causes consist of the following:
− Uplink quality
− Downlink quality
− Uplink strength
− Downlink strength
− Timing advance
− Better cell
− Load
− Rapid level drop
− MSC intervention
− OM intervention
− EDGE coverage
− Other causes
Failed Outgoing External Inter-Cell Handovers (Directed Retry)
In the outgoing external inter-cell handover (directed retry) procedure, the BSC measures
the related counter when the handover fails. The measurement is based on the crossing offrequency bands, different signaling points, reject cause, clear command sent by MSCand A-interface failure, and timer expired.
Along with Outgoing External Inter-Cell Handover Requests per Cell and Outgoing
External Inter-Cell Handover Commands per Cell, the counters show the performance ofoutgoing external inter-cell handovers. Along with Incoming External Inter-Cell
Handover Measurement per Cell, the counters show the performance of external inter-cell handovers.
The crossing of frequency bands is of the following types:− 900/850 to 900/850
− 1800/1900 to 1800/1900
− 900/850 to 1800/1900
− 1800/1900 to 900/850
The handover between different signaling points in a BSC is also called outgoingexternal inter-cell handover.
The reject causes consist of the following:
− OM intervention
− Equipment failure
− No radio resource available
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12 Call Measurement
HUAWEI BSC6000 Base Station Controller
Performance Counter Reference
12-156 Huawei Technologies Proprietary Issue 03 (2007-05-09)
− Requested terrestrial resource unavailable
− BSS not equipped
− Invalid Cell
− Requested transcoding/rate adaption unavailable
− Circuit pool mismatch
− Requested speech version unavailable
− Ciphering algorithm not supported
− Terrestrial circuit already allocated
− Invalid message
− Protocol error between BSS and MSC
− Other causes
The clear commands sent by MSC and A-interface failure consist of the following:
− Radio interface message failure
− Radio interface failure
− OM intervention
− Equipment failure
− Preemption
− Invalid message
− Protocol error between BSS and MSC
− Other causes
The A interface failure occurs when the message such as MSC reset and SCCP linksdisruption is sent on the A interface.
The timers involved in the measurement consist of T7 and T8. T7 is triggered to wait foran HO CMD message from the MSC after BSC1 sends an HO RQD message to the MSC.T8 is triggered to wait for a CLR CMD message from the MSC after BSC1 sends an HOCMD message to the MS through the source cell.
Trigger Point
Figure 12-22 and Figure 12-23 show the trigger points of Failed Outgoing External Inter-Cell
Handovers (Excluding Directed Retry) and Failed Outgoing External Inter-Cell Handovers
(Directed Retry) respectively.
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference 12 Call Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 12-157
Figure 12-22 Trigger points of Failed Outgoing External Inter-Cell Handovers (ExcludingDirected Retry)
BTS1 BSC1MS
HO CMD
MSMSC BTS2
C HO
REQ ACK
MR FROM MS
HO RQD
HO REQ
CHAN ACTIV
CHAN
ACTIV ACK
HO DETECT
HO CMD HO DETECT
EST IND
HO ACC
PHY INFOFIRST SABM
UA
HO CMP
HO CMP
CLR CMD
CLR CMP
BSC2
A
E
G
HO FAILHO
RQD REJ
T7 expired
Reconnection
to old channel
D
H
T7 expired
F
Resource
request failed
In the
outgoing
external
inter-cell
handover
procedure
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12 Call Measurement
HUAWEI BSC6000 Base Station Controller
Performance Counter Reference
12-158 Huawei Technologies Proprietary Issue 03 (2007-05-09)
Figure 12-23 Failed Outgoing External Inter-Cell Handovers (Directed Retry)
In the
outgoing
external
inter-cell
handover
(directed
retry)
procedure
BTS1(CELL1) BSC1MS
ASSIGN
REQ
MSMSC BTS2(CELL0)
CHAN
ACTIV ACK
HO DETECTHO
DETECT
EST IND
FIRST
SABM
HO ACC
HO CMD
CLR CMD
CLR CMP
BSC2
B
E
HO
REQ ACK
IMM ASS CMD
C
G
T7 expired
F
CHAN REQ
CHAN RQD
CHAN ACTIV
CHAN
ACTIV ACK
UA EST IND(CM
SERV REQ)CR(CM
SERV REQ)
CC
CM SERV ACCEPT
SETUP
CALL PROCEEDING
HO RQD
HO REQ
HO FAILHO
RQD REJ
HO CMD
Resource
request failed
CHAN ACTIV
PHY INFO
FIRST SABM
UA
HO CMP
HO CMP
H
T8 expired
A: Failed Outgoing External Inter-Cell Handovers (Excluding Directed Retry)
B: Failed Outgoing External Inter-Cell Handovers (Directed Retry)
C: Failed Outgoing External Inter-Cell Handovers (Handover Request Rejected)
D: Failed Outgoing External Inter-Cell Handovers (Reconnection to Old Channels)
E: Failed Outgoing External Inter-Cell Handovers (Clear Commands Sent by MSC)
F: Failed Outgoing Internal Inter-Cell Handovers (A-Interface Failure)
G: Failed Outgoing Internal Inter-Cell Handovers (T7 Expired)
H: Failed Outgoing Internal Inter-Cell Handovers (T8 Expired)
The trigger points of the counters are as follows:
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference 12 Call Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 12-159
Failed Outgoing External Inter-Cell Handovers (Excluding Directed Retry)
As shown in Figure 12-22, in the outgoing external inter-cell handover (excluding
directed retry) procedure, the related measurement is triggered when the handover fails.The measurement is based on the crossing of frequency bands, channel type, different
signaling points, and handover cause.The crossing of frequency bands is of the following types:
− 900/850 to 900/850
− 1800/1900 to 1800/1900
− 900/850 to 1800/1900
− 1800/1900 to 900/850
The channel involved in the measurement is of the following types:
− SDCCH
− TCHF
− TCHH
The handover between different signaling points in a BSC is also called outgoingexternal inter-cell handover.
The handover causes consist of the following:
− Uplink quality
− Downlink quality
− Uplink strength
− Downlink strength
− Timing advance
− Better cell
− Load− Rapid level drop
− MSC intervention
− OM intervention
− EDGE coverage
− Other causes
Failed Outgoing External Inter-Cell Handovers (Directed Retry)
As shown in Figure 12-22, in the outgoing external inter-cell handover (directed retry) procedure, the related measurement is triggered when the handover fails. The
measurement is based on the crossing of frequency bands and the different signaling
points.The crossing of frequency bands is of the following types:
− 900/850 to 900/850
− 1800/1900 to 1800/1900
− 900/850 to 1800/1900
− 1800/1900 to 900/850
The handover between different signaling points in a BSC is also called outgoingexternal inter-cell handover.
Failed Outgoing External Inter-Cell Handovers (Handover Request Rejected)
As shown in Figure 12-22 and Figure 12-23, when the BSC receives an HO FAIL
message from BSC2, it analyzes the failure cause and sends an HO RQD REJ message to
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12 Call Measurement
HUAWEI BSC6000 Base Station Controller
Performance Counter Reference
12-160 Huawei Technologies Proprietary Issue 03 (2007-05-09)
BSC1. The related measurement is triggered when the MSC sends an HO RQD REJmessage to BSC1. The measurement is based on the reject cause carried in the HO RQDREJ message.
The reject causes consist of the following:
− OM intervention− Equipment failure
− No radio resource available
− Requested terrestrial resource unavailable
− BSS not equipped
− Invalid cell
− Requested transcoding/rate adaption unavailable
− Circuit pool mismatch
− Requested Speech version unavailable
−
Ciphering algorithm not supported− Terrestrial circuit already allocated
− Invalid message
− Protocol error between BSS and MSC
− Other cause
Failed Outgoing External Inter-Cell Handovers (Reconnection to Old Channels)
As shown in Figure 12-22, in the outgoing external inter-cell handover (excludingdirected retry) procedure, the measurement is triggered when the MS reconnects to the
old channel and sends an HO FAIL message on the old channel. The measurement is based on the RR cause.
The RR causes consist of the following:− Abnormal release, unspecified
− Abnormal release, channel unacceptable
− Abnormal release, timer expired
− Abnormal release, no activity on the radio path
− Preemptive release
− Handover failed, timing advance out of range
− Channel mode unavailable
− Frequency unavailable
− Call already cleared
− Semantically incorrect message
− Invalid mandatory information
− Message type non-existent or not implemented
− Message type not compatible with protocol state
− Conditional IE error
− No cell allocation available
− Protocol error unspecified
− Other causes
Failed Outgoing External Inter-Cell Handovers (Clear Commands Sent by MSC)
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference 12 Call Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 12-161
As shown in Figure 12-22 and Figure 12-23, in the outgoing external inter-cell handover(including directed retry) procedure, the measurement is triggered when BSC1 receives aCLR CMD message from the MSC. The measurement is based on the cause carried inthe CLR CMD message.
The causes consist of the following:− Radio interface message failure
− Radio interface failure
− OM intervention
− Equipment failure
− Preemption
− Invalid message
− Protocol error between BSS and MSC
− Other causes
Failed Outgoing External Inter-Cell Handovers (A-Interface Failure)
As shown in Figure 12-22 and Figure 12-23, in the outgoing external inter-cell handover
(including directed retry) procedure, the measurement is triggered when BSC1 receivesan A interface failure message. The measurement is performed in the source cell.
Failed Outgoing External Inter-Cell Handovers (T7 Expired)
As shown in Figure 12-22 and Figure 12-23, in the outgoing external inter-cell handover
(including directed retry) procedure, the measurement is triggered when T7 expires. T7is triggered to wait for an HO CMD message from the MSC after BSC1 sends an HORQD message to the MSC. The measurement is based on the channel type.
The channel involved in the measurement is of the following types:
− SDCCH
− TCHF− TCHH
If directed retry is performed in the outgoing external inter-cell handover procedure, thechannel involved in the measurement is a traffic channel. If no directed retry is performed in the outgoing external inter-cell handover procedure, the channel involvedin the measurement can be a traffic channel or a signaling channel.
Failed Outgoing External Inter-Cell Handovers (T8 Expired)
As shown in Figure 12-22 and Figure 12-23, in the outgoing external inter-cell handover
(including directed retry) procedure, the measurement is triggered when T8 expires. T8
is triggered to wait for a CLR CMD message from the MSC after BSC1 sends an HOCMD message to the MS through the source cell. If T8 expires, the MS does not access
the target cell or reconnect to the old channel within the scheduled time. Themeasurement is based on the channel type.
If directed retry is performed in the outgoing external inter-cell handover procedure, thechannel involved in the measurement is a traffic channel. If no directed retry is
performed in the outgoing external inter-cell handover procedure, the channel involvedin the measurement can be a traffic channel or a signaling channel.
Formula
None.
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12 Call Measurement
HUAWEI BSC6000 Base Station Controller
Performance Counter Reference
12-162 Huawei Technologies Proprietary Issue 03 (2007-05-09)
12.14.5 Outgoing External Inter-Cell Handover AnalyzedMeasurement per Cell
CounterTable 12-65 lists the counters of Outgoing External Inter-Cell Handover Analyzed
Measurement per Cell.
Table 12-65 Counters of Outgoing External Inter-Cell Handover Analyzed Measurement per Cell
Number Counter
1 CH330: Outgoing External Inter-Cell Handover Requests
2 CH333: Successful Outgoing External Inter-Cell Handovers
3 CH331: Outgoing External Inter-Cell Handover Commands
4 CH332: Failed Outgoing External Inter-Cell Handovers
5 TH333: Success Rate of Outgoing External Inter-Cell Handover
6 CH332K: Failed Outgoing External Inter-Cell Handovers (Handover RequestRejected)
7 CH332D: Failed Outgoing External Inter-Cell Handovers (Reconnection toOld Channels)
8 CH332H: Failed Outgoing External Inter-Cell Handovers (Clear Commands
Sent by MSC)
9 CH332L: Failed Outgoing External Inter-Cell Handovers (T7 Expired)
10 CH332C: Failed Outgoing External Inter-Cell Handovers (T8 Expired)
Meaning
None.
Trigger Point
None.
Formula
Outgoing External Inter-Cell Handover Requests =
[Outgoing External Inter-Cell Handover Requests (SDCCH) (Excluding Directed Retry)(900/850-900/850)] +
[Outgoing External Inter-Cell Handover Requests (SDCCH) (Excluding Directed Retry)(1800/1900-1800/1900)] +
[Outgoing External Inter-Cell Handover Requests (SDCCH) (Excluding Directed Retry)
(900/850-1800/1900)] +
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference 12 Call Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 12-163
[Outgoing External Inter-Cell Handover Requests (SDCCH) (Excluding Directed Retry)(1800/1900-900/850)] +
[Outgoing External Inter-Cell Handover Requests (TCHF) (Excluding Directed Retry)
(900/850-900/850)] +
[Outgoing External Inter-Cell Handover Requests (TCHF) (Excluding Directed Retry)
(1800/1900-1800/1900)] +
[Outgoing External Inter-Cell Handover Requests (TCHF) (Excluding Directed Retry)(900/850-1800/1900)] +
[Outgoing External Inter-Cell Handover Requests (TCHF) (Excluding Directed Retry)(1800/1900-900/850)] +
[Outgoing External Inter-Cell Handover Requests (TCHH) (Excluding Directed Retry)
(900/850-900/850)] +
[Outgoing External Inter-Cell Handover Requests (TCHH) (Excluding Directed Retry)
(1800/1900-1800/1900)] +
[Outgoing External Inter-Cell Handover Requests (TCHH) (Excluding Directed Retry)
(900/850-1800/1900)] +
[Outgoing External Inter-Cell Handover Requests (TCHH) (Excluding Directed Retry)(1800/1900-900/850)] +
[Outgoing External Inter-Cell Handover Requests (Directed Retry) (900/850-900/850)] +
[Outgoing External Inter-Cell Handover Requests (Directed Retry) (1800/1900-1800/1900)] +
[Outgoing External Inter-Cell Handover Requests (Directed Retry) (900/850-1800/1900)] +
[Outgoing External Inter-Cell Handover Requests (Directed Retry) (1800/1900-900/850)]
Successful Outgoing External Inter-Cell Handovers =
[Outgoing External Inter-Cell Handover Requests]-
[Failed Outgoing External Inter-Cell Handovers]
Outgoing External Inter-Cell Handover Commands =
[Outgoing External Inter-Cell Handover Commands (SDCCH) (Excluding Directed Retry)
(900/850-900/850)] +
[Outgoing External Inter-Cell Handover Commands (SDCCH) (Excluding Directed Retry)
(1800/1900-1800/1900)] +
[Outgoing External Inter-Cell Handover Commands (SDCCH) (Excluding Directed Retry)(900/850-1800/1900)] +
[Outgoing External Inter-Cell Handover Commands (SDCCH) (Excluding Directed Retry)(1800/1900-900/850)] +
[Outgoing External Inter-Cell Handover Commands (TCHF) (Excluding Directed Retry)
(900/850-900/850)] +
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference
12-164 Huawei Technologies Proprietary Issue 03 (2007-05-09)
[Outgoing External Inter-Cell Handover Commands (TCHF) (Excluding Directed Retry)(1800/1900-1800/1900)] +
[Outgoing External Inter-Cell Handover Commands (TCHF) (Excluding Directed Retry)
(900/850-1800/1900)] +
[Outgoing External Inter-Cell Handover Commands (TCHF) (Excluding Directed Retry)
(1800/1900-900/850)] +
[Outgoing External Inter-Cell Handover Commands (TCHH) (Excluding Directed Retry)(900/850-900/850)] +
[Outgoing External Inter-Cell Handover Commands (TCHH) (Excluding Directed Retry)(1800/1900-1800/1900)] +
[Outgoing External Inter-Cell Handover Commands (TCHH) (Excluding Directed Retry)
(900/850-1800/1900)] +
[Outgoing External Inter-Cell Handover Commands (TCHH) (Excluding Directed Retry)
(1800/1900-900/850)] +
[Outgoing External Inter-Cell Handover Commands (Directed Retry) (900/850-900/850)] +
[Outgoing External Inter-Cell Handover Commands (Directed Retry) (1800/1900-1800/1900)]+
[Outgoing External Inter-Cell Handover Commands (Directed Retry) (900/850-1800/1900)] +
[Outgoing External Inter-Cell Handover Commands (Directed Retry) (1800/1900-900/850)]
Failed Outgoing External Inter-Cell Handovers =
[Failed Outgoing External Inter-Cell Handovers (SDCCH) (Excluding Directed Retry)(900/850-900/850)] +
[Failed Outgoing External Inter-Cell Handovers (SDCCH) (Excluding Directed Retry)
(1800/1900-1800/1900)] +
[Failed Outgoing External Inter-Cell Handovers (SDCCH) (Excluding Directed Retry)(900/850-1800/1900)] +
[Failed Outgoing External Inter-Cell Handovers (SDCCH) (Excluding Directed Retry)
(1800/1900-900/850)] +
[Failed Outgoing External Inter-Cell Handovers (TCHF) (Excluding Directed Retry)
(900/850-900/850)] +[Failed Outgoing External Inter-Cell Handovers (TCHF) (Excluding Directed Retry)(1800/1900-1800/1900)] +
[Failed Outgoing External Inter-Cell Handovers (TCHF) (Excluding Directed Retry)
(900/850-1800/1900)] +
[Failed Outgoing External Inter-Cell Handovers (TCHF) (Excluding Directed Retry)(1800/1900-900/850)] +
[Failed Outgoing External Inter-Cell Handovers (TCHH) (Excluding Directed Retry)
(900/850-900/850)] +
[Failed Outgoing External Inter-Cell Handovers (TCHH) (Excluding Directed Retry)(1800/1900-1800/1900)] +
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference 12 Call Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 12-165
[Failed Outgoing External Inter-Cell Handovers (TCHH) (Excluding Directed Retry)(900/850-1800/1900)] +
[Failed Outgoing External Inter-Cell Handovers (TCHH) (Excluding Directed Retry)
(1800/1900-900/850)] +
[Failed Outgoing External Inter-Cell Handovers (Directed Retry) (900/850-900/850)] +
[Failed Outgoing External Inter-Cell Handovers (Directed Retry) (1800/1900-1800/1900)] +
[Failed Outgoing External Inter-Cell Handovers (Directed Retry) (900/850-1800/1900)] +
[Failed Outgoing External Inter-Cell Handovers (Directed Retry) (1800/1900-900/850)]
Success Rate of Outgoing External Inter-Cell Handover =
[Successful Outgoing External Inter-Cell Handovers] *{100}/[Outgoing External Inter-Cell
Handover Requests]
Failed Outgoing External Inter-Cell Handovers (Handover Request Rejected) =
[Failed Outgoing External Inter-Cell Handovers (Handover Request Rejected) (OM
Intervention)] +
[Failed Outgoing External Inter-Cell Handovers (Handover Request Rejected) (Equipment
Failure)] +
[Failed Outgoing External Inter-Cell Handovers (Handover Request Rejected) (No RadioResource Available)] +
[Failed Outgoing External Inter-Cell Handovers (Handover Request Rejected) (RequestedTerrestrial Resource Unavailable)] +
[Failed Outgoing External Inter-Cell Handovers (Handover Request Rejected) (BSS not
Equipped)] +
[Failed Outgoing External Inter-Cell Handovers (Handover Request Rejected) (Invalid Cell)]+
[Failed Outgoing External Inter-Cell Handovers (Handover Request Rejected) (Requested
Transcoding/Rate Adaption Unavailable)] +
[Failed Outgoing External Inter-Cell Handovers (Handover Request Rejected) (Circuit PoolMismatch)] +
[Failed Outgoing External Inter-Cell Handovers (Handover Request Rejected) (RequestedSpeech Version Unavailable)] +
[Failed Outgoing External Inter-Cell Handovers (Handover Request Rejected) (Ciphering
Algorithm not Supported)] +
[Failed Outgoing External Inter-Cell Handovers (Handover Request Rejected) (Terrestrialcircuit already allocated)] +
[Failed Outgoing External Inter-Cell Handovers (Handover Request Rejected) (Invalid
Message)] +
[Failed Outgoing External Inter-Cell Handovers (Handover Request Rejected) (Protocol Error
between BSS and MSC)] +
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Performance Counter Reference
12-166 Huawei Technologies Proprietary Issue 03 (2007-05-09)
[Failed Outgoing External Inter-Cell Handovers (Handover Request Rejected) (Other Causes)]
Failed Outgoing External Inter-Cell Handovers (Reconnection to Old Channels) =
[Failed Outgoing External Inter-Cell Handovers (Reconnection to Old Channels) (AbnormalRelease, Unspecified)] +
[Failed Outgoing External Inter-Cell Handovers (Reconnection to Old Channels) (Abnormal
Release, Channel Unacceptable)] +
[Failed Outgoing External Inter-Cell Handovers (Reconnection to Old Channels) (AbnormalRelease, Timer Expired)] +
[Failed Outgoing External Inter-Cell Handovers (Reconnection to Old Channels) (AbnormalRelease, No Activity on the Radio Path)] +
[Failed Outgoing External Inter-Cell Handovers (Reconnection to Old Channels) (Preemptive
Release)] +[Failed Outgoing External Inter-Cell Handovers (Reconnection to Old Channels) (Handover
Failed, Timing Advance out of Range)] +
[Failed Outgoing External Inter-Cell Handovers (Reconnection to Old Channels) (Channel
Mode Unavailable)] +
[Failed Outgoing External Inter-Cell Handovers (Reconnection to Old Channels) (FrequencyUnavailable)] +
[Failed Outgoing External Inter-Cell Handovers (Reconnection to Old Channels) (CallAlready Cleared)] +
[Failed Outgoing External Inter-Cell Handovers (Reconnection to Old Channels)(Semantically Incorrect Message)] +
[Failed Outgoing External Inter-Cell Handovers (Reconnection to Old Channels) (Invalid
Mandatory Information)] +
[Failed Outgoing External Inter-Cell Handovers (Reconnection to Old Channels) (MessageType Non-existent or Not Implemented)] +
[Failed Outgoing External Inter-Cell Handovers (Reconnection to Old Channels) (MessageType Not Compatible with Protocol State)] +
[Failed Outgoing External Inter-Cell Handovers (Reconnection to Old Channels) (Conditional
IE Error)] +
[Failed Outgoing External Inter-Cell Handovers (Reconnection to Old Channels) (No Cell
Allocation Available)] +
[Failed Outgoing External Inter-Cell Handovers (Reconnection to Old Channels) (Protocol
Error Unspecified)] +
[Failed Outgoing External Inter-Cell Handovers (Reconnection to Old Channels) (OtherCauses)]
Failed Outgoing External Inter-Cell Handovers (Clear Commands Sent by MSC) =
[Failed Outgoing External Inter-Cell Handovers (Clear Commands Sent by MSC) (RadioInterface Message Failure)] +
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[Failed Outgoing External Inter-Cell Handovers (Clear Commands Sent by MSC) (RadioInterface Failure)] +
[Failed Outgoing External Inter-Cell Handovers (Clear Commands Sent by MSC) (OM
Intervention)] +
[Failed Outgoing External Inter-Cell Handovers (Clear Commands Sent by MSC) (Equipment
Failure)] +
[Failed Outgoing External Inter-Cell Handovers (Clear Commands Sent by MSC)(Preemption)] +
[Failed Outgoing External Inter-Cell Handovers (Clear Commands Sent by MSC) (InvalidMessage)] +
[Failed Outgoing External Inter-Cell Handovers (Clear Commands Sent by MSC) (Protocol
Error between BSS and MSC)] +
[Failed Outgoing External Inter-Cell Handovers (Clear Commands Sent by MSC) (Other
Causes)]
Failed Outgoing External Inter-Cell Handovers (T7 Expired) =
[Failed Outgoing External Inter-Cell Handovers (T7 Expired) (SDCCH) (Excluding DirectedRetry)] +
[Failed Outgoing External Inter-Cell Handovers (T7 Expired) (TCHF) (Signaling Channel)] +
[Failed Outgoing External Inter-Cell Handovers (T7 Expired) (TCHH) (Signaling Channel)] +
[Failed Outgoing External Inter-Cell Handovers (T7 Expired) (TCHF) (Traffic Channel)] +
[Failed Outgoing External Inter-Cell Handovers (T7 Expired) (TCHH) (Traffic Channel)] +
[Failed Outgoing External Inter-Cell Handovers (T7 Expired) (Directed Retry)]
Failed Outgoing External Inter-Cell Handovers (T8 Expired) =
[Failed Outgoing External Inter-Cell Handovers (T8 Expired) (SDCCH) (Excluding DirectedRetry)] +
[Failed Outgoing External Inter-Cell Handovers (T8 Expired) (TCHF) (Signaling Channel)] +
[Failed Outgoing External Inter-Cell Handovers (T8 Expired) (TCHH) (Signaling Channel)] +
[Failed Outgoing External Inter-Cell Handovers (T8 Expired) (TCHF) (Traffic Channel)] +
[Failed Outgoing External Inter-Cell Handovers (T8 Expired) (TCHH) (Traffic Channel)] +
[Failed Outgoing External Inter-Cell Handovers (T8 Expired) (Directed Retry)]
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12.15 Incoming Inter-RAT Inter-Cell HandoverMeasurement per Cell
12.15.1 Overview
The conventions used in this section are as follows:
The MSC of the local system is referred to as MSC 1, and that of another system is referred to as
MSC 2.
The BSC of the local system is referred to as BSC 1.
The BTS of the local system is referred to as BTS 1.
The procedure for incoming inter-RAT inter-cell handover is as follows:
MSC 2 sends a PERFORM HO message to MSC 1. Based on the information of the target
cell in this message and the mapping between cells and BSCs in the MSC 1 data configuration,MSC 1 finds out the corresponding BSC, that is, BSC 1, and sends an HO ERQ message toBSC 1. Based on the information of the target cell, BSC 1 requests channel resources from the
target cell. After the request succeeds, BSC 1 sends a CHAN ACTIV message to the target
cell. BTS 1 sends a CHAN ACTIV ACK message from the target cell to BSC 1. BSC 1requests the resources for voice service. After the request succeeds, BSC 1 sends an HO REQACK message to MSC 1.
After receiving an HO CMD message from another system, the MS sends an HO ACCmessage to BTS 1, attempting to access the new system from the target cell. BTS 1 reports anHO DETECT message to MSC 1 through BSC 1. At the same time, BTS 1 sends a PHY
INFO message to the MS. The MS sends a FIRST SABM message to access the network.
BTS 1 sends an EST IND message to BSC 1. At the same time, BTS 1 responds the MS with
a UA message. After accessing the network, the MS sends an HO CMP message to MSC 1through the target cell.
Here, the incoming inter-RAT inter-cell handover is complete.
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Figure 12-24 Incoming inter-RAT inter-cell handover procedure
MSC1 BSC1MSC2 BTS1
A
MS
PERFORM HO
HO REQ
CHAN ACTIV
CHAN ACTIV ACK
HO REQ ACK
RADIO CHAN ACK
IAM
ACM
BHO ACC
HO DETECT
HO DETECT
PHY INFO
FIRST SABM
UAEST IND
HO CMP
HO CMP
SEND END SIG
A: Request for incoming inter-RAT inter-cell handover
B: Respond to the request for incoming inter-RAT inter-cell handover
Table 12-66 lists the counter types of Incoming Inter-RAT Inter-Cell Handover Measurement per Cell.
Table 12-66 Counter types of Incoming Inter-RAT Inter-Cell Handover Measurement per Cell
Counter Type Section
Incoming Inter-RAT Inter-Cell Handover Requests per Cell 12.15.2
Incoming Inter-RAT Inter-Cell Handover Responses per Cell 12.15.3
Failed Incoming Inter-RAT Inter-Cell Handovers per Cell 12.15.4
Incoming Inter-RAT Inter-Cell Handover Analyzed Measurement per Cell 12.15.5
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12.15.2 Incoming Inter-RAT Inter-Cell Handover Requests perCell
CounterTable 12-67 lists the counters of Incoming Inter-RAT Inter-Cell Handover Requests per Cell.
Table 12-67 Counters of Incoming Inter-RAT Inter-Cell Handover Requests per Cell
Number Counter
1 H3600: Incoming Inter-RAT Inter-Cell Handover Requests (SDCCH)
2 H3609: Incoming Inter-RAT Inter-Cell Handover Requests (TCH)
Meaning
When receiving an HO ERQ message from MSC 1, BSC 1 performs the measurement basedon the channel type if deciding to perform an inter-RAT handover.
Along with Incoming Inter-RAT Inter-Cell Handover Responses per Cell and Failed Incoming
Inter-RAT Inter-Cell Handovers per Cell, this type of counters can help you to betterunderstand the situation of incoming inter-RAT inter-cell handover.
Along with Outgoing Inter-RAT Inter-Cell Handover Measurement per Cell, this type ofcounters can help you to better understand the performance of incoming inter-RAT inter-cell
handover.
The channel type may be SDCCH or TCH.
Trigger Point
The measurement is triggered at point A as shown in Figure 12-24, that is, when BSC 1
receives an HO REQ message from MSC 1. For an inter-RAT handover, the measurement is based on the channel type.
Formula
None.
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12.15.3 Incoming Inter-RAT Inter-Cell Handover Responses perCell
CounterTable 12-68 list the counters of Incoming Inter-RAT Inter-Cell Handover Responses per Cell.
Table 12-68 Counters of Incoming Inter-RAT Inter-Cell Handover Responses per Cell
Number Counter
1 H3610: Incoming Inter-RAT Inter-Cell Handover Responses (SDCCH)
2 H3617: Incoming Inter-RAT Inter-Cell Handover Responses (TCHF)
3 H3618: Incoming Inter-RAT Inter-Cell Handover Responses (TCHH)
Meaning
When responding MSC 1 with an HO REQ ACK message, BSC 1 performs the measurement
based on the channel type.
Along with Incoming Inter-RAT Inter-Cell Handover Responses per Cell and Failed Incoming
Inter-RAT Inter-Cell Handovers per Cell, this type of counters can help you to betterunderstand the situation of incoming inter-RAT inter-cell handovers.
Along with Outgoing Inter-RAT Inter-Cell Handover Measurement per Cell, this type of
counters can help you to better understand the performance of incoming inter-RAT inter-cellhandovers.
The channel type may be SDCCH, TCHH, or TCHF.
Trigger Point
The measurement is triggered at point B as shown in Figure 12-24, that is, when BSC 1
responds MSC 1 with an HO REQ ACK message. The measurement is based on the channeltype.
Formula
None.
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12.15.4 Failed Incoming Inter-RAT Inter-Cell Handovers per Cell
Counter
Table 12-69 list the counters of Failed Incoming Inter-RAT Inter-Cell Handovers per Cell.
Table 12-69 Counters of Failed Incoming Inter-RAT Inter-Cell Handovers per Cell
Number Counter
1 H3620: Failed Incoming Inter-RAT Inter-Cell Handovers (SDCCH)
2 H3627: Failed Incoming Inter-RAT Inter-Cell Handovers (TCHF)
3 H3628: Failed Incoming Inter-RAT Inter-Cell Handovers (TCHH)
4 H362J: Failed Incoming Inter-RAT Inter-Cell Handovers (Invalid Message)
5 H3620A: Failed Incoming Inter-RAT Inter-Cell Handovers (ChannelUnavailable) (SDCCH)
6 H3629A: Failed Incoming Inter-RAT Inter-Cell Handovers (ChannelUnavailable) (TCH)
7 H362E: Failed Incoming Inter-RAT Inter-Cell Handovers (CIC Unavailable)
8 H362F: Failed Incoming Inter-RAT Inter-Cell Handovers (CIC Allocated)
9 H362B: Failed Incoming Inter-RAT Inter-Cell Handovers (Terrestrial Resource
Request Failed)
10 H362H: Failed Incoming Inter-RAT Inter-Cell Handovers (Clear CommandsSent by MSC)
11 H3620C: Failed Incoming Inter-RAT Inter-Cell Handovers (Timer Expired)(SDCCH)
12 H3629Cb: Failed Incoming Inter-RAT Inter-Cell Handovers (Timer Expired)
(TCH) (Signaling Channel)
13 H3629Ca: Failed Incoming Inter-RAT Inter-Cell Handovers (Timer Expired)(TCH) (Traffic Channel)
Meaning
When an incoming inter-RAT inter-cell handover fails, BSC 1 performs the measurement
based on the channel type, triggering condition, and failure cause.
Along with Incoming Inter-RAT Inter-Cell Handover Requests per Cell and Incoming Inter-
RAT Inter-Cell Handover Responses per Cell, this type of counters can help you to betterunderstand the situation of incoming inter-RAT inter-cell handovers.
Along with Outgoing Inter-RAT Inter-Cell Handover Measurement per Cell, this type of
counters can help you to better understand the performance of incoming inter-RAT inter-cellhandovers.
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The channel type may be SDCCH, TCHF, or TCHH.
The triggering condition of a failure in incoming inter-RAT inter-cell handover may be Invalid
Message, Channel Unavailable, CIC abnormal, Terrestrial Resource Request Failed, Clear
Commands Sent by MSC, or Timer Expired.
The failure cause may be CIC Unavailable or CICI Allocated.
Trigger Point
The measurement is triggered at any of points A to G as shown in Figure 12-25.
Figure 12-25 Incoming inter-RAT inter-cell handover procedure
MSC1 BSC1MSC2 BTS1 MS
HO REQ
C
B
A
PERFORM HO
HO REQ ACK
D
E
F
CHAN ACTIV
CHAN ACTIV ACK
RADIOCHAN ACK
IAM
ACM
HO DETECT
HO DETECT
HO ACC
PHY INFO
FIRST SABM
UAHandover
timer timeout
G
HO CMP
HO CMP
SEND END SIG
EST IND
A: Failed Incoming Inter-RAT Inter-Cell Handovers
B: Failed Incoming Inter-RAT Inter-Cell Handovers (Invalid Message)
C: Failed Incoming Inter-RAT Inter-Cell Handover Requests (Channel Unavailable)
D: Failed Incoming Inter-RAT Inter-Cell Handovers (CIC abnormal)
E: Failed Incoming Inter-RAT Inter-Cell Handovers (Terrestrial Resource Request Failed)
F: Failed Incoming Inter-RAT Inter-Cell Handovers (Clear Commands Sent by MSC)
G: Failed Incoming Inter-RAT Inter-Cell Handovers (Timer Expired)
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Failed Incoming Inter-RAT Inter-Cell Handovers
When an incoming inter-RAT inter-cell handover fails, BSC 1 performs the measurement based on the channel type.
The channel type may be SDCCH, TCHF, or TCHH.
Failed Incoming Inter-RAT Inter-Cell Handovers (Invalid Message)
When receiving an HO REQ message from MSC 1, BSC 1 decodes the message. When
finding out that the message is not compliant with the protocol requirements during thedecoding, BSC 1 performs the measurement.
Failed Incoming Inter-RAT Inter-Cell Handovers (Channel Unavailable)
When the target cell responds BSC 1 that the request for channel resources fails becauseof channel unavailable, BSC 1 performs the measurement based on the channel type.
The channel type may be SDCCH or TCH.
Failed Incoming Inter-RAT Inter-Cell Handovers (CIC Unavailable)
When failing to request terrestrial resources because of CIC abnormal, BSC 1 performs
the measurement based on the failure cause. Where, the CIC is carried in the HO REQmessage.
The failure cause may be CIC Unavailable or CIC Allocated.
Failed Incoming Inter-RAT Inter-Cell Handovers (Terrestrial Resource Request Failed)
When failing to request terrestrial resources not because of CIC abnormal, BSC 1 performs the measurement. Where, the CIC is carried in the HO REQ message.
Failed Incoming Inter-RAT Inter-Cell Handovers (Clear Commands Sent by MSC)
When receiving a CLR CMD message from MSC 1, BSC 1 performs the measurement.
Failed Incoming Inter-RAT Inter-Cell Handovers (Timer Expired)
When failing to receive an HO CMP message from the MS through the target cell before
the timer is expired, BSC 1 performs the measurement based on the channel type.The channel type may be SDCCH or TCH. Here, the TCH may be a traffic channel or asignaling channel.
Formula
None.
12.15.5 Incoming Inter-RAT Inter-Cell Handover AnalyzedMeasurement per Cell
Counter
Table 12-70 lists the counters of Incoming Inter-RAT Inter-Cell Handover Analyzed
Measurement per Cell.
Table 12-70 Counters of Incoming Inter-RAT Inter-Cell Handover Analyzed Measurement perCell
Number Counter
1 CH360: Incoming Inter-RAT Inter-Cell Handover Requests
2 CH363: Successful Incoming Inter-RAT Inter-Cell Handovers
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Number Counter
3 TH363: Success Rate of Incoming Inter-RAT Inter-Cell Handover
4 CH361: Incoming Inter-RAT Inter-Cell Handover Responses
5 H362: Failed Incoming Inter-RAT Inter-Cell Handovers
6 H362C: Failed Incoming Inter-RAT Inter-Cell Handovers (Timer Expired)
Meaning
None.
Trigger Point
None.
Formula
Incoming Inter-RAT Inter-Cell Handover Requests =
[Incoming Inter-RAT Inter-Cell Handover Requests (SDCCH)] +
[Incoming Inter-RAT Inter-Cell Handover Requests (TCH)]
Successful Incoming Inter-RAT Inter-Cell Handovers =
[Incoming Inter-RAT Inter-Cell Handover Requests (SDCCH)] +
[Incoming Inter-RAT Inter-Cell Handover Requests (TCH)]-
[Failed Incoming Inter-RAT Inter-Cell Handovers (SDCCH)]-
[Failed Incoming Inter-RAT Inter-Cell Handovers (TCHF)]-
[Failed Incoming Inter-RAT Inter-Cell Handovers (TCHH)]
Success Rate of Incoming Inter-RAT Inter-Cell Handover =
[Successful Incoming Inter-RAT Inter-Cell Handovers]*{100}/[Incoming Inter-RAT Inter-Cell Handover Requests]
Incoming Inter-RAT Inter-Cell Handover Responses =
[Incoming Inter-RAT Inter-Cell Handover Responses (SDCCH)] +
[Incoming Inter-RAT Inter-Cell Handover Responses (TCHF)] +
[Incoming Inter-RAT Inter-Cell Handover Responses (TCHH)]
Failed Incoming Inter-RAT Inter-Cell Handovers =
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[Failed Incoming Inter-RAT Inter-Cell Handovers (SDCCH)] +
[Failed Incoming Inter-RAT Inter-Cell Handovers (TCHF)] +
[Failed Incoming Inter-RAT Inter-Cell Handovers (TCHH)]
Failed Incoming Inter-RAT Inter-Cell Handovers (Timer Expired)=
[Failed Incoming Inter-RAT Inter-Cell Handovers (Timer Expired) (SDCCH)] +
[Failed Incoming Inter-RAT Inter-Cell Handovers (Timer Expired) (TCH) (SignalingChannel)] +
[Failed Incoming Inter-RAT Inter-Cell Handovers (Timer Expired) (TCH) (Traffic Channel)]
12.16 Outgoing Inter-RAT Inter-Cell HandoverMeasurement per Cell
12.16.1 Overview
The conventions used in this section are as follows:
The BSC of the source cell is referred to as BSC 2. The BSC of the target cell is referred to as BSC 1.
The BTS corresponds to BSC 2 is referred to as BTS 2.
The MSC corresponds to BSC 2 is referred to as MSC 2.
Outgoing Inter-RAT Inter-Cell Handover Measurement per Cell has the following two types:
Outgoing Inter-RAT Inter-Cell Handover Measurement per Cell (Excluding DirectedRetry)
The MS sends a measurement report to BSC 2. Based on the current load and signalinterference of the cell as well as the signal quality and RX/TX level in the measurement
report, BSC 2 decides whether to perform a handover. If deciding to perform a handover,BSC 2 sends a handover triggering indication to the corresponding processing module. If
the target cell is in another system, BSC 2 initiates an inter-RAT handover outgoing fromthe source cell.
BSC 2 sends an HO RQD message to MSC 2, requesting MSC 2 to notify the other
system. Based on its data configuration, MSC 2 finds out the corresponding MSC, that is,
MSC 1, and a handover request to MSC 1. After preparing for the handover, the othersystem notifies MSC 2. MSC 2 sends an HO CMD message to BSC 2, requesting BSC 2
to notify the MS. BSC 2 sends an HO CMD message to the MS through the source cell,requesting the MS to access the network in the target cell.
After the access succeeds, MSC 1 notifies MSC 2 that the incoming inter-RAT inter-cell
handover is complete. MSC 2 sends a CLR CMD message to BSC 2. After instructingthe source cell to release related resources, BSC 2 responds MSC 2 with a CLR CMP
message.
Here, the outgoing inter-RAT inter-cell handover is complete.
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Figure 12-26 Outgoing inter-RAT inter-cell handover procedure (excluding directed retry)
MSC2 BSC2MSC1 BTS2
A
MS
MR FROM MS
HO RQD
RADIO CHAN ACK
IAM
ACM
B
HO CMD
HO CMD
CLR CMP
SEND END SIG
PERFORM HO
CLR CMD
A: Request for an outgoing inter-RAT inter-cell handover
B: Command for an incoming inter-RAT inter-cell handover
Outgoing Inter-RAT Inter-Cell Handover Measurement per Cell (Directed Retry)
After receiving an ASSIGN REQ message from MSC 2, BSC 2 decides the assignment
mode based on the load of the cell. There are three assignment procedures: normal
assignment procedure, directed retry procedure, and assignment modification procedure.If the load of the cell is so high that the cell cannot admit a new service or that a newservice will affect current services, BSC 2 decides to perform a directed retry. If the
target cell selected during the directed retry belongs to another system, BSC 2 initiatesan inter-RAT inter-cell handover procedure outgoing from the source cell.
BSC 2 sends an HO RQD message to MSC 2, requesting MSC 2 to notify the other
system. Based on its data configuration, MSC 2 finds out the corresponding MSC, that is,MSC 1, and a handover request to MSC 1. After preparing for the handover, the other
system notifies MSC 2. MSC 2 sends an HO CMD message to BSC 2, requesting BSC 2to notify the MS. BSC 2 sends an HO CMD message to the MS through the source cell,
requesting the MS to access the network in the target cell. After the access succeeds,MSC 1 notifies MSC 2 that the incoming inter-RAT inter-cell handover is complete.
MSC 2 sends a CLR CMD message to BSC 2. After instructing the source cell to releaserelated resources, BSC 2 responds MSC 2 with a CLR CMP message.
Here, the outgoing inter-RAT inter-cell handover during directed retry is complete.
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Figure 12-27 Outgoing inter-RAT inter-cell handover procedure (including directed retry)
MSC2 BSC2MSC1 BTS2
A
MS
ASSIGN REQ
HO RQD
RADIO CHAN ACK
IAM
ACM
B
HO CMD
HO CMD
CLR CMP
SEND END SIG
PERFORM HO
CLR CMD
A: Request for an outgoing inter-RAT inter-cell handover
B: Command for an incoming inter-RAT inter-cell handover
Table 12-71 lists the counter types of Outgoing Inter-RAT Inter-Cell Handover Measurement per Cell.
Table 12-71 Counter types of Outgoing Inter-RAT Inter-Cell Handover Measurement per Cell
Counter Type Section
Outgoing Inter-RAT Inter-Cell Handover Requests per Cell 12.16.2
Outgoing Inter-RAT Inter-Cell Handover Commands per Cell 12.16.3
Failed Outgoing Inter-RAT Inter-Cell Handovers per Cell 12.16.4
Outgoing Inter-RAT Inter-Cell Handover Analyzed Measurement per Cell 12.16.5
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12.16.2 Outgoing Inter-RAT Inter-Cell Handover Requests perCell
CounterTable 12-72 lists the counters of Outgoing Inter-RAT Inter-Cell Handover Requests per Cell.
Table 12-72 Counters of Outgoing Inter-RAT Inter-Cell Handover Requests per Cell
Number Counter
1 H3500: Outgoing Inter-RAT Inter-Cell Handover Requests (SDCCH)
(Excluding Directed Retry)
2 H3507: Outgoing Inter-RAT Inter-Cell Handover Requests (TCHF)
3 H3508: Outgoing Inter-RAT Inter-Cell Handover Requests (TCHH)
Meaning Outgoing Inter-RAT Inter-Cell Handover Requests (Excluding Directed Retry)
This type of counters measures the number of outgoing inter-RAT inter-cell handoverrequests that are initiated according to handover decision.
Along with Outgoing Inter-RAT Inter-Cell Handover Commands per Cell and Failed
Outgoing External Inter-Cell Handovers per Cell, this type of counters can help you to better understand the situation of outgoing inter-RAT inter-cell handovers.
Along with Incoming Inter-RAT Inter-Cell Handover Measurement per Cell, this type ofcounters can help you to better understand the situation of all outgoing inter-RAT inter-cell handovers.
The channel type may be SDCCH.
Outgoing Inter-RAT Inter-Cell Handover Requests (Directed Retry)
This type of counters measures the number of outgoing inter-RAT inter-cell handoverrequests that are initiated by the BSC during directed retry in an assignment procedure.
Along with Outgoing Inter-RAT Inter-Cell Handover Commands per Cell and Failed
Outgoing External Inter-Cell Handovers per Cell, this type of counters can help you to better understand the situation of outgoing inter-RAT inter-cell handovers.
Along with Incoming Inter-RAT Inter-Cell Handover Measurement per Cell, this type ofcounters can help you to better understand the situation of all outgoing inter-RAT inter-cell handovers.
The channel type may be TCHH or TCHF.
Trigger Point Outgoing Inter-RAT Inter-Cell Handover Requests (Excluding Directed Retry)
The measurement is triggered at point A as shown in Figure 12-27, that is, when BSC 2decides to perform an outgoing inter-RAT inter-cell handover according to measurementreports. The measurement is based on the channel type.
Outgoing Inter-RAT Inter-Cell Handover Requests (Directed Retry)
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The measurement is triggered at point A as shown in Figure 12-27, that is, when BSC 2decides to perform an inter-RAT directed retry. The measurement is based on the channeltype.
Formula None.
12.16.3 Outgoing Inter-RAT Inter-Cell Handover Commands perCell
Counter
Table 12-73 lists the counters of Outgoing Inter-RAT Inter-Cell Handover Commands per Cell.
Table 12-73 Counters of Outgoing Inter-RAT Inter-Cell Handover Commands per Cell
Number Counter
1 H3510: Outgoing Inter-RAT Inter-Cell Handover Commands (SDCCH)(Excluding Directed Retry)
2 H3517: Outgoing Inter-RAT Inter-Cell Handover Commands (TCHF)
3 H3518: Outgoing Inter-RAT Inter-Cell Handover Commands (TCHH)
MeaningThis type of counters measures the number of outgoing inter-RAT inter-cell handover
commands that are sent by BSC 2 to the MS through the source cell. Along with Outgoing
Inter-RAT Inter-Cell Handover Requests per Cell and Failed Outgoing External Inter-CellHandovers per Cell, this type of counters can help you to better understand the situation of
outgoing inter-RAT inter-cell handovers.
Along with Incoming Inter-RAT Inter-Cell Handover Measurement per Cell, this type ofcounters can help you to better understand the situation of all outgoing inter-RAT inter-cell
handovers.
The channel type may be SDCCH, TCHH, or TCHF. The directed retry procedure applies to
only traffic channels.
Trigger Point
The measurement is triggered at point B as shown in Figure 12-26 and Figure 12-27, that is,
when BSC 2 sends an HO CMD message to the MS through the source cell. Here, thehandover includes directed retry. The measurement is based on the channel type.
Formula
None.
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12.16.4 Failed Outgoing Inter-RAT Inter-Cell Handovers per Cell
Counter
Table 12-74 lists the counters of Failed Outgoing Inter-RAT Inter-Cell Handovers per Cell.
Table 12-74 Counters of Failed Outgoing Inter-RAT Inter-Cell Handovers per Cell
Number Counter
1 H3520: Failed Outgoing Inter-RAT Inter-Cell Handovers (SDCCH) (ExcludingDirected Retry)
2 H3527: Failed Outgoing Inter-RAT Inter-Cell Handovers (TCHF)
3 H3528: Failed Outgoing Inter-RAT Inter-Cell Handovers (TCHH)
4 H352Da: Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection toOld Channels) (Abnormal Release, Unspecified)
5 H352Db: Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to
Old Channels) (Abnormal Release, Channel Unacceptable)
6 H352Dc: Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to
Old Channels) (Abnormal Release, Timer Expired)
7 H352Dd: Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection toOld Channels) (Abnormal Release, No Activity on the Radio Path)
8 H352De: Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to
Old Channels) (Preemptive Release)
9 H352Df: Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to
Old Channels) (Handover Failed, Timing Advance out of Range)
10 H352Dg: Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to
Old Channels) (Channel Mode Unavailable)
11 H352Dh: Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection toOld Channels) (Frequency Unavailable)
12 H352Di: Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection toOld Channels) (Call Already Cleared)
13 H352Dj: Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection toOld Channels) (Semantically Incorrect Message)
14 H352Dk: Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection toOld Channels) (Invalid Mandatory Information)
15 H352Dl: Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection toOld Channels) (Message Type Non-existent or Not Implemented)
16 H352Dm: Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection toOld Channels) (Message Type Not Compatible with Protocol State)
17 H352Dn: Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to
Old Channels) (Conditional IE Error)
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Number Counter
18 H352Do: Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to
Old Channels) (No Cell Allocation Available)
19 H352Dp: Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection toOld Channels) (Protocol Error Unspecified)
20 H352Dq: Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection toOld Channels) (Other Causes)
21 H352Ka: Failed Outgoing Inter-RAT Inter-Cell Handovers (Handover Request
Rejected) (OM Intervention)
22 H352Kb: Failed Outgoing Inter-RAT Inter-Cell Handovers (Handover RequestRejected) (Equipment Failure)
23 H352Kc: Failed Outgoing Inter-RAT Inter-Cell Handovers (Handover Request
Rejected) (No Radio Resource Available)
24 H352Kd: Failed Outgoing Inter-RAT Inter-Cell Handovers (Handover RequestRejected) (Requested Terrestrial Resource Unavailable)
25 H352Ke: Failed Outgoing Inter-RAT Inter-Cell Handovers (Handover Request
Rejected) (BSS not Equipped)
26 H352Kf: Failed Outgoing Inter-RAT Inter-Cell Handovers (Handover RequestRejected) (Invalid Cell)
27 H352Kg: Failed Outgoing Inter-RAT Inter-Cell Handovers (Handover RequestRejected) (Requested Transcoding/Rate Adaption Unavailable)
28 H352Kh: Failed Outgoing Inter-RAT Inter-Cell Handovers (Handover RequestRejected) (Circuit Pool Mismatch)
29 H352Ki: Failed Outgoing Inter-RAT Inter-Cell Handovers (Handover RequestRejected) (Requested Speech Version Unavailable)
30 H352Kj: Failed Outgoing Inter-RAT Inter-Cell Handovers (Handover RequestRejected) (Ciphering Algorithm not Supported)
31 H352Kk: Failed Outgoing Inter-RAT Inter-Cell Handovers (Handover RequestRejected) (Terrestrial circuit already allocated)
32 H352Kl: Failed Outgoing Inter-RAT Inter-Cell Handovers (Handover Request
Rejected) (Invalid Message)
33 H352Km: Failed Outgoing Inter-RAT Inter-Cell Handovers (HandoverRequest Rejected) (Protocol Error between BSS and MSC)
34 H352Kn: Failed Outgoing Inter-RAT Inter-Cell Handovers (Handover RequestRejected) (Other Causes)
35 H352Ha: Failed Outgoing Inter-RAT Inter-Cell Handovers (Clear CommandsSent by MSC) (Radio Interface Message Failure)
36 H352Hb: Failed Outgoing Inter-RAT Inter-Cell Handovers (Clear Commands
Sent by MSC) (Radio Interface Failure)
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Number Counter
37 H352Hc: Failed Outgoing Inter-RAT Inter-Cell Handovers (Clear Commands
Sent by MSC) (OM Intervention)
38 H352Hd: Failed Outgoing Inter-RAT Inter-Cell Handovers (Clear CommandsSent by MSC) (Equipment Failure)
39 H352He: Failed Outgoing Inter-RAT Inter-Cell Handovers (Clear CommandsSent by MSC) (Preemption)
40 H352Hf: Failed Outgoing Inter-RAT Inter-Cell Handovers (Clear Commands
Sent by MSC) (Invalid Message)
41 H352Hg: Failed Outgoing Inter-RAT Inter-Cell Handovers (Clear CommandsSent by MSC) (Protocol Error between BSS and MSC)
42 H352Hh: Failed Outgoing Inter-RAT Inter-Cell Handovers (Clear Commands
Sent by MSC) (Other Causes)
43 H352G: Failed Outgoing Inter-RAT Inter-Cell Handovers (A-Interface Failure)
44 H352L: Failed Outgoing Inter-RAT Inter-Cell Handovers (T7 Expired)
45 H352C: Failed Outgoing Inter-RAT Inter-Cell Handovers (T8 Expired)
Meaning
This type of counters measures the number of failed outgoing inter-RAT inter-cell handovers
based on the channel type and failure cause. Here, the handover excludes directed retry.
Along with Outgoing Inter-RAT Inter-Cell Handover Requests per Cell and Outgoing Inter-RAT Inter-Cell Handover Commands per Cell, this type of counters can help you to better
understand the situation of outgoing inter-RAT inter-cell handovers.
Along with Incoming Inter-RAT Inter-Cell Handover Measurement per Cell, this type ofcounters can help you to better understand the situation of all outgoing inter-RAT inter-cell
handovers.
The channel type may be SDCCH, TCHH, or TCHF. The directed retry procedure applies to
only traffic channels.
The failure cause may be one of the following:
Handover request rejected
Reconnected to the old channel, excluding directed retry
Command from the MSC cleared
The A interface failed
T7 or T8 timer expired
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Trigger Point
The measurement is triggered at any of points A to H as shown in Figure 12-28 and Figure 12-
29.
Figure 12-28 Outgoing inter-RAT inter-cell handover procedure (excluding directed retry)
MSC2 BSC2MSC1 BTS2 MS
MR FROM MS
HO RQD
HO CMD
CLR CMD
SEND END SIG
C
G
T7 expired
A
E
In the
outgoing
inter-RAT
inter-cell
handover
procedure
PERFORM HO
Handover failed
HO RQD REJ
HO CMD
HO FAIL
D
H
T8 expired
CLR CMP
F
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Figure 12-29 Outgoing inter-RAT inter-cell handover procedure (including directed retry)
MSC2 BSC2MSC1 BTS2 MS
HO CMD
CLR CMD
SEND END SIG
C
G
T7 expired
B
E
In the
outgoing
inter-RAT
inter-cell
handover
procedure
PERFORM HO
Handover failed
HO RQD
HO CMD
H
T8 expired
CLR CMP
F
ASSIGN REQ
HO RQD REJ
A: Failed Outgoing Inter-RAT Inter-Cell Handovers (Excluding Directed Retry)
B: Failed Outgoing Inter-RAT Inter-Cell Handovers (Directed Retry)
C: Failed Outgoing Inter-RAT Inter-Cell Handovers (Handover Request Rejected)
E: Failed Outgoing Inter-RAT Inter-Cell Handovers (Clear Commands Sent by MSC)
F: Failed Outgoing Inter-RAT Inter-Cell Handovers (A-Interface Failure)
G: Failed Outgoing Inter-RAT Inter-Cell Handovers (T7 Expired)H: Failed Outgoing Inter-RAT Inter-Cell Handovers (T8 Expired)
Failed Outgoing Inter-RAT Inter-Cell Handovers (Excluding Directed Retry)
As shown in Figure 12-28, the measurement is triggered when an outgoing inter-RAT
inter-cell handover (excluding directed retry) fails. The measurement is based on thechannel type.
The channel type may be SDCCH, TCHH, or TCHF.
Failed Outgoing Inter-RAT Inter-Cell Handovers (Directed Retry)
As shown in Figure 12-29, the measurement is triggered when an outgoing inter-RATinter-cell handover (including directed retry) fails. The measurement is based on thechannel type.
The channel type may be TCHH or TCHF.
Failed Outgoing Inter-RAT Inter-Cell Handovers (Handover Request Rejected)
As shown in Figure 12-28 and Figure 12-29, the measurement is triggered when MSC 2sends an HO RQD REJ message to BSC 2 during an outgoing inter-RAT inter-cellhandover (including directed retry). The measurement is based on the rejection cause.
The rejection causes are as follows:
− OM intervention
− Equipment failure
− No radio resource available
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− Requested terrestrial resource unavailable
− BSS not equipped
− Invalid Cell
− Requested transcoding/rate adaption unavailable
− Circuit pool mismatch
− Requested Speech version unavailable
− Ciphering algorithm not supported
− Terrestrial circuit already allocated
− Invalid message
− Protocol Error between BSS and MSC
− Other causes
Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to Old Channels)
As shown in Figure 12-28, the measurement is triggered when the MS sends an HO
FAIL message to BSC 2 through the source cell after failing to access the new system inthe target cell and returning to the old channel during an outgoing inter-RAT inter-cellhandover (excluding directed retry). The measurement is based on the RR cause.
The RR causes for handover failure are as follows:
− Abnormal release, unspecified
− Abnormal release, channel unacceptable
− Abnormal release, timer expired
− Abnormal release, no activity on the radio path
− Preemptive release
− Handover failed, timing advance out of range
− Channel mode unavailable
− Frequency unavailable
− Call already cleared
− Semantically incorrect message
− Invalid mandatory information
− Message type non-existent or not implemented
− Message type not compatible with protocol state
− Conditional IE error
− No cell allocation available
− Protocol error unspecified− Other causes
Failed Outgoing Inter-RAT Inter-Cell Handovers (Clear Commands Sent by MSC)
As shown in Figure 12-28 and Figure 12-29, the measurement is triggered when BSC 2
receives a CLR CMD message from MSC 2 during an outgoing inter-RAT inter-cellhandover (including directed retry). The measurement is based on the clearance cause.
The clearance causes are as follows:
− Radio interface message failure
− Radio interface failure
− OM intervention
− Equipment failure
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− Preemption
− Invalid message
− Protocol Error between BSS and MSC
− Other causes
Failed Outgoing Inter-RAT Inter-Cell Handovers (A-Interface Failure)
As shown in Figure 12-28 and Figure 12-29, the measurement is triggered when BSC 2
receives a message indicating that the A interface fails during an outgoing inter-RATinter-cell handover (including directed retry).
Failed Outgoing Inter-RAT Inter-Cell Handovers (T7 Expired)
As shown in Figure 12-28 and Figure 12-29, the measurement is triggered when BSC 2does not receive an HO CMD message from MSC 2 before T7 expires during anoutgoing inter-RAT inter-cell handover (including directed retry).
Failed Outgoing Inter-RAT Inter-Cell Handovers (T8 Expired)
As shown in Figure 12-28 and Figure 12-29, the measurement is triggered when BSC 2
does not receive a CLR CMD message from MSC 2 before T8 expires during anoutgoing inter-RAT inter-cell handover (including directed retry).
Formula
None.
12.16.5 Outgoing Inter-RAT Inter-Cell Handover AnalyzedMeasurement per Cell
Counter
Table 12-75 lists the counters of Outgoing Inter-RAT Inter-Cell Handover Analyzed
Measurement per Cell.
Table 12-75 Counters of Outgoing Inter-RAT Inter-Cell Handover Analyzed Measurement per
Cell
Number Counter
1 CH350: Outgoing Inter-RAT Inter-Cell Handover Requests
2 CH353: Successful Outgoing Inter-RAT Inter-Cell Handovers
3 TH353: Success Rate of Outgoing Inter-RAT Inter-Cell Handover
4 CH351: Outgoing Inter-RAT Inter-Cell Handover Commands
5 CH352: Failed Outgoing Inter-RAT Inter-Cell Handovers
6 CH352D: Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection toOld Channels)
7 CH352K: Failed Outgoing Inter-RAT Inter-Cell Handovers (Handover
Request Rejected)
8 CH352H: Failed Outgoing Inter-RAT Inter-Cell Handovers (Clear Commands
Sent by MSC)
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Meaning
None.
Trigger Point None.
Formula
Outgoing Inter-RAT Inter-Cell Handover Requests =
[Outgoing Inter-RAT Inter-Cell Handover Requests (SDCCH) (Excluding Directed Retry)] +
[Outgoing Inter-RAT Inter-Cell Handover Requests (TCHF)] +
[Outgoing Inter-RAT Inter-Cell Handover Requests (TCHH)]
Successful Outgoing Inter-RAT Inter-Cell Handovers =
[Outgoing Inter-RAT Inter-Cell Handover Requests (SDCCH) (Excluding Directed Retry)] +
[Outgoing Inter-RAT Inter-Cell Handover Requests (TCHF)] +
[Outgoing Inter-RAT Inter-Cell Handover Requests (TCHH)]-
[Failed Outgoing Inter-RAT Inter-Cell Handovers (SDCCH) (Excluding Directed Retry)]-
[Failed Outgoing Inter-RAT Inter-Cell Handovers (TCHF)]-
[Failed Outgoing Inter-RAT Inter-Cell Handovers (TCHH)]
Success Rate of Outgoing Inter-RAT Inter-Cell Handover =
[Successful Outgoing Inter-RAT Inter-Cell Handovers]*{100}/[Outgoing Inter-RAT Inter-Cell
Handover Requests]
Outgoing Inter-RAT Inter-Cell Handover Commands =
[Outgoing Inter-RAT Inter-Cell Handover Commands (SDCCH) (Excluding Directed Retry)]
+
[Outgoing Inter-RAT Inter-Cell Handover Commands (TCHF)] +
[Outgoing Inter-RAT Inter-Cell Handover Commands (TCHH)]
Failed Outgoing Inter-RAT Inter-Cell Handovers =
[Failed Outgoing Inter-RAT Inter-Cell Handovers (SDCCH) (Excluding Directed Retry)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (TCHF)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (TCHH)]
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Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to Old Channels)=
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to Old Channels) (Abnormal
Release, Unspecified)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to Old Channels) (AbnormalRelease, Channel Unacceptable)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to Old Channels) (AbnormalRelease, Timer Expired)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to Old Channels) (Abnormal
Release, No Activity on the Radio Path)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to Old Channels)(Preemptive Release)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to Old Channels) (Handover
Failed, Timing Advance out of Range)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to Old Channels) (ChannelMode Unavailable)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to Old Channels)(Frequency Unavailable)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to Old Channels) (Call
Already Cleared)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to Old Channels)(Semantically Incorrect Message)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to Old Channels) (Invalid
Mandatory Information)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to Old Channels) (MessageType Non-existent or Not Implemented)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to Old Channels) (MessageType Not Compatible with Protocol State)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to Old Channels)
(Conditional IE Error)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to Old Channels) (No CellAllocation Available)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to Old Channels) (ProtocolError Unspecified)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Reconnection to Old Channels) (OtherCauses)]
Failed Outgoing Inter-RAT Inter-Cell Handovers (Handover Request Rejected)=
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Handover Request Rejected) (OM
Intervention)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Handover Request Rejected) (EquipmentFailure)] +
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[Failed Outgoing Inter-RAT Inter-Cell Handovers (Handover Request Rejected) (No RadioResource Available)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Handover Request Rejected) (Requested
Terrestrial Resource Unavailable)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Handover Request Rejected) (BSS not
Equipped)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Handover Request Rejected) (Invalid Cell)]+
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Handover Request Rejected) (RequestedTranscoding/Rate Adaption Unavailable)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Handover Request Rejected) (Circuit Pool
Mismatch)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Handover Request Rejected) (Requested
Speech Version Unavailable)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Handover Request Rejected) (Ciphering
Algorithm not Supported)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Handover Request Rejected) (Terrestrialcircuit already allocated)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Handover Request Rejected) (InvalidMessage)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Handover Request Rejected) (Protocol
Error between BSS and MSC)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Handover Request Rejected) (OtherCauses)]
Failed Outgoing Inter-RAT Inter-Cell Handovers (Clear Commands Sent by MSC)=
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Clear Commands Sent by MSC) (Radio
Interface Message Failure)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Clear Commands Sent by MSC) (Radio
Interface Failure)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Clear Commands Sent by MSC) (OM
Intervention)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Clear Commands Sent by MSC)(Equipment Failure)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Clear Commands Sent by MSC)
(Preemption)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Clear Commands Sent by MSC) (Invalid
Message)] +
[Failed Outgoing Inter-RAT Inter-Cell Handovers (Clear Commands Sent by MSC) (ProtocolError between BSS and MSC)] +
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[Failed Outgoing Inter-RAT Inter-Cell Handovers (Clear Commands Sent by MSC) (OtherCauses)]
12.17 GSM Cell to GSM Cell Incoming HandoverMeasurement
12.17.1 Overview
GSM Cell to GSM Cell Incoming Handover refers to a handover in which the MS is handedover to the target cell from the source cell.
GSM Cell to GSM Cell Incoming Handover Measurement aims to measure the following twotypes of handover:
After receiving a measurement report from the MS, the BSC decides to perform a
handover based on the interference of the current channel, the load of the cell, and themeasurement report, which indicates the signal quality, strength, and TX/RX level.
After receiving an ASSIGN REQ message from the MSC, the BSC decides theassignment mode based on the load of the cell. There are three assignment procedures:
normal assignment procedure, directed retry procedure, and assignment modification procedure. If the load of the cell is so high that the cell cannot admit a new service or
that a new service will affect current services, the BSC decides to perform a handoverthrough directed retry.
The incoming handover procedure is as follows:
Step 1 The main processing module of the BSC receives an intra-BSC handover triggering indication
from the handover algorithm, an inter-BSC HO REQ message from the MSC, or a request forhandover during directed retry.
Step 2 The BSC sends an inter-BSC HO REQ message to the target cell through the MSC or directly
requests channel resources from the target cell controlled by the same BSC for channel
resources.
Step 3 The BSC sends an HO CMD message to the MS through the source cell after the request
succeeds.
Step 4 The MS accesses the network through the target cell by receiving/sending messages such asHO ACC, PHY INFO, FIRST SABM, and UA.
Step 5 The MS sends an HO CMP message to the BSC through the target cell and releases the
resources of the source cell.
----End
Table 12-76 lists the counter types of GSM Cell to GSM Cell Incoming Handover
Measurement.
Table 12-76 Counter types of CGSM Cell to GSM Cell Incoming Handover Measurement
Counter Type Section
Cell Incoming Handover Requests (Cell to Cell) 12.17.2
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Counter Type Section
Failed Cell Incoming Handovers (Cell to Cell) 12.17.3
Cell Incoming Handover Analyzed Measurement (Cell to Cell) 12.17.4
Incoming Cell Handover Requests (Timing Advance) (Cell to Cell) 12.17.5
12.17.2 Cell Incoming Handover Requests (Cell to Cell)
Counter
H380: Cell Incoming Handover Requests
MeaningThis counter measures the number of Cell Incoming Handover Requests.
Along with Failed Cell Incoming Handovers (Cell to Cell), this counter can help you to better
understand the situation of inter-cell incoming handovers.
Along with GSM Cell to GSM Cell Outgoing Handover Measurement, this counter can helpyou to better understand the situation of inter-cell handovers.
Trigger Point
The measurement is triggered when an incoming handover occurs between different cells.
Formula
None.
12.17.3 Failed Cell Incoming Handovers (Cell to Cell)
Counter
Table 12-77 lists the counter of Failed Cell Incoming Handovers (Cell to Cell).
Table 12-77 Counter of Failed Cell Incoming Handovers (Cell to Cell)
Number Counter
1 H382A: Failed Cell Incoming Handovers (Congestion)
2 H382M: Failed Cell Incoming Handovers (Other Causes)
Meaning
This type of counters measures the number of inter-cell incoming handover failures based on
the failure cause.
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Along with Cell Incoming Handover Requests (Cell to Cell), this counter can help you to better under stand the situation of inter-cell incoming handovers.
Along with GSM Cell to GSM Cell Outgoing Handover Measurement, this counter can help
you to better understand the situation of inter-cell handovers.
The failure cause may be congestion or others.
The counter H382M: Failed Cell Incoming Handovers (Other Causes) also includes directed retry(handover cause).
Trigger Point
The measurement is triggered when an inter-cell incoming handover fails. The measurement
is based on the failure cause.
Formula None.
12.17.4 Cell Incoming Handover Analyzed Measurement (Cell toCell)
Counter
Table 12-78 lists the counters of Cell Incoming Handover Analyzed Measurement (Cell to
Cell).
Table 12-78 Counters of Cell Incoming Handover Analyzed Measurement (Cell to Cell)
Number Counter
1 RH383: Success Rate of Cell Incoming Handovers
2 H382: Failed Cell Incoming Handovers
3 H383: Successful Cell Incoming Handovers
Meaning None.
Trigger Point
None.
Formula
Success Rate of Cell Incoming Handovers =
[Successful Cell Incoming Handovers]*{100}/[Cell Incoming Handover Requests]
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Failed Cell Incoming Handovers =
[Failed Cell Incoming Handovers (Congestion)] +
[Failed Cell Incoming Handovers (Other Causes)]
Successful Cell Incoming Handovers =
[Cell Incoming Handover Requests]-[Failed Cell Incoming Handovers]
12.17.5 Incoming Cell Handover Requests (Timing Advance) (Cellto Cell)
Counter
CH347: Incoming Cell Handover Requests (Timing Advance)
Meaning
This counter measures the number of incoming cell handover requests. The handover cause istiming advance.
Trigger Point
As long as the source cell and the object cell are different, this counter is measured based onthe handover cause.
Formula None.
12.18 GSM Cell to GSM Cell Outgoing HandoverMeasurement
12.18.1 Overview
GSM Cell to GSM Cell Outgoing Handover refers to a handover in which the MS is handedover from the source cell to the target cell.
GSM Cell to GSM Cell Outgoing Handover Measurement aims to measure the following two
types of handover:
After receiving a measurement report from the MS, the BSC decides to perform a
handover based on the interference of the current channel, the load of the cell, and themeasurement report, which indicates the signal quality, strength, and TX/RX level.
After receiving an ASSIGN REQ message from the MSC, the BSC decides the
assignment mode based on the load of the cell. There are three assignment procedures:normal assignment procedure, directed retry procedure, and assignment modification procedure. If the load of the cell is so high that the cell cannot admit a new service or
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that a new service will affect current services, the BSC decides to perform a handoverthrough directed retry.
The outgoing handover procedure is as follows:
Step 1 The main processing module of the BSC receives an intra-BSC handover triggering indicationfrom the handover algorithm, an inter-BSC HO REQ message from the MSC, or a request for
handover during directed retry.
Step 2 The BSC sends an inter-BSC HO REQ message to the target cell through the MSC or directly
requests channel resources from the target cell controlled by the same BSC for channelresources.
Step 3 The target cell responds to the HO REQ message after the request and preparation succeed.
Step 4 The BSC sends an HO CMD message to the MS through the source cell.
Step 5 The MS accesses the network through the target cell by receiving/sending messages such asHO ACC, PHY INFO, FIRST SABM, and UA.
Step 6 The MS sends an HO CMP message to the BSC through the target cell and releases the
resources of the source cell.
----End
Table 12-79 lists the counter types of GSM Cell to GSM Cell Outgoing Handover.
Table 12-79 Counter types of GSM Cell to GSM Cell Outgoing Handover
Counter Type Section
Cell Outgoing Handover Commands (Cell to Cell) 12.18.2
Failed Cell Outgoing Handovers (Cell to Cell) 12.18.3
Cell Outgoing Handover Analyzed Measurement (Cell to Cell) 12.18.4
12.18.2 Cell Outgoing Handover Commands (Cell to Cell)
Counter
Table 12-80 lists the counters of Cell Outgoing Handover Commands (Cell to Cell).
Table 12-80 Counters of Cell Outgoing Handover Commands (Cell to Cell)
Number Counter
1 H371A: Cell Outgoing Handover Commands (Uplink Quality)
2 H371B: Cell Outgoing Handover Commands (Downlink Quality)
3 H371C: Cell Outgoing Handover Commands (Uplink Strength)
4 H371D: Cell Outgoing Handover Commands (Downlink Strength)
5 H371E: Cell Outgoing Handover Commands (Timing Advance)
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Number Counter
6 H371F: Cell Outgoing Handover Commands (Better Cell)
7 H371G: Cell Outgoing Handover Commands (Load)
8 H371H: Cell Outgoing Handover Commands (Rapid Level Drop)
9 H371I: Cell Outgoing Handover Commands (MSC Intervention)
10 H371J: Cell Outgoing Handover Commands (OM Intervention)
11 H371L: Cell Outgoing Handover Commands (Other Causes)
Meaning
This counter measures the number of Cell Outgoing Handover Commands.
Along with Failed Cell Outgoing Handovers (Cell to Cell), this counter can help you to better
understand the situation of outgoing handovers between different cells.
Along with GSM Cell to GSM Cell Incoming Handover Measurement, this counter can helpyou to better understand the situation of inter-cell handovers.
The triggering conditions of inter-cell outgoing handover are as follows:
Uplink Quality
Downlink Quality
Uplink Strength
Downlink Strength
Timing Advance
Better Cell
Cell Load
Rapid Level Drop
MSC Intervention
OM Intervention
EDGE coverage
Other Causes
The counter H371L: Cell Outgoing Handover Commands (Other Causes) also includes directed retry(handover cause).
Trigger Point
The measurement is triggered when an outgoing handover occurs between different cells.
Formula
None.
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12.18.3 Failed Cell Outgoing Handovers (Cell to Cell)
Counter
Table 12-81 lists the counters of Failed Cell Outgoing Handovers (Cell to Cell).
Table 12-81 Counters of Failed Cell Outgoing Handovers (Cell to Cell)
Number Counter
1 H372A: Failed Cell Outgoing Handovers (Uplink Quality)
2 H372B: Failed Cell Outgoing Handovers (Downlink Quality)
3 H372C: Failed Cell Outgoing Handovers (Uplink Strength)
4 H372D: Failed Cell Outgoing Handovers (Downlink Strength)
5 H372E: Failed Cell Outgoing Handovers (Timing Advance)
6 H372F: Failed Cell Outgoing Handovers (Better Cell)
7 H372G: Failed Cell Outgoing Handovers (Load)
8 H372H: Failed Cell Outgoing Handovers (Rapid Level Drop)
9 H372I: Failed Cell Outgoing Handovers (MSC Intervention)
10 H372J: Failed Cell Outgoing Handovers (OM Intervention)
11 H372L: Failed Cell Outgoing Handovers (Other Causes)
Meaning
This type of counters measures the number of inter-cell outgoing handover failures based on
the triggering cause.
Along with Cell Outgoing Handover Commands (Cell to Cell), this counter can help you to better understand the situation of outgoing handovers between different cells.
Along with GSM Cell to GSM Cell Incoming Handover Measurement, this counter can helpyou to better understand the situation of inter-cell handovers.
The triggering conditions of inter-cell outgoing handover are as follows:
Uplink Quality
Downlink Quality
Uplink Strength
Downlink Strength
Timing Advance
Better Cell
Cell Load
Rapid Level Drop
MSC Intervention
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OM Intervention
EDGE coverage
Other Causes
The counter H372L: Failed Cell Outgoing Handovers (Other Causes) also includes directed retry(handover cause).
Trigger Point
The measurement is triggered when an outgoing handover occurs between different cells.
Formula
None.
12.18.4 Cell Outgoing Handover Analyzed Measurement (Cell toCell)
Counter
Table 12-82 lists the counters of Cell Outgoing Handover Analyzed Measurement (Cell to
Cell).
Table 12-82 Counters of Cell Outgoing Handover Analyzed Measurement
Number Counter
1 RH373: Success Rate of Cell Outgoing Handovers
2 H371: Cell Outgoing Handover Commands
3 H372: Failed Cell Outgoing Handovers
4 H373: Successful Cell Outgoing Handovers
Meaning
None.
Trigger Point
None.
Formula
Success Rate of Cell Outgoing Handovers =
[Successful Cell Outgoing Handovers]*{100}/[Cell Outgoing Handover Commands]
Cell Outgoing Handover Commands =
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[Cell Outgoing Handover Commands (Uplink Quality)] +
[Cell Outgoing Handover Commands (Downlink Quality)] +
[Cell Outgoing Handover Commands (Uplink Strength)] +
[Cell Outgoing Handover Commands (Downlink Strength)] +
[Cell Outgoing Handover Commands (Timing Advance)] +
[Cell Outgoing Handover Commands (Better Cell)] +
[Cell Outgoing Handover Commands (Load)] +
[Cell Outgoing Handover Commands (Rapid Level Drop)] +
[Cell Outgoing Handover Commands (MSC Intervention)] +
[Cell Outgoing Handover Commands (OM Intervention)] +
[Cell Outgoing Handover Commands (Other Causes)]
Failed Cell Outgoing Handovers =
[Failed Cell Outgoing Handovers (Uplink Quality)] +
[Failed Cell Outgoing Handovers (Downlink Quality)] +
[Failed Cell Outgoing Handovers (Uplink Strength)] +
[Failed Cell Outgoing Handovers (Downlink Strength)] +
[Failed Cell Outgoing Handovers (Timing Advance)] +
[Failed Cell Outgoing Handovers (Better Cell)] +
[Failed Cell Outgoing Handovers (Load)] +
[Failed Cell Outgoing Handovers (Rapid Level Drop)] +
[Failed Cell Outgoing Handovers (MSC Intervention)] +
[Failed Cell Outgoing Handovers (OM Intervention)] +
[Failed Cell Outgoing Handovers (Other Causes)]
Successful Cell Outgoing Handovers =
[Cell Outgoing Handover Commands]-[Failed Cell Outgoing Handovers]
12.19 Measurement of MRs upon Handover Initiation perCell
12.19.1 Overview
Measurement of MRs upon Handover Initiation per Cell is used to measure the receiving level,
receiving quality, and timing advance (TA) status reported in handover.
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Table 12-83 lists the counter types of Measurement of MRs upon Handover Initiation per Cell.
Table 12-83 Counter types of Measurement of MRs upon Handover Initiation per Cell
Counter Type Section
Measurement of MRs upon Handover Initiation (Receiving Quality) per Cell 12.19.2
Mean Uplink Receiving Level during Handover Initiation per Cell 12.19.3
Mean Uplink Receiving Quality during Handover Initiation per Cell 12.19.4
Concentric Cell Handover Initiation MR Analyzed Measurement (Receiving
Level) per Cell 12.19.5
Concentric Cell Handover Initiation MR Analyzed Measurement (TimingAdvance) per Cell
12.19.6
12.19.2 Measurement of MRs upon Handover Initiation(Receiving Quality) per Cell
Counter
Table 12-84 lists the counters of Measurement of MRs upon Handover Initiation (Receiving
Quality) per Cell.
Table 12-84 Counters of Measurement of MRs upon Handover Initiation (Receiving Quality) per
Cell
Number Counter
1 S3300C: Number of MRs during Handover Initiation (Uplink Receiving Level
Rank = 0)
2 S3301C: Number of MRs during Handover Initiation (Uplink Receiving LevelRank = 1)
3 S3302C: Number of MRs during Handover Initiation (Uplink Receiving LevelRank = 2)
4 S3303C: Number of MRs during Handover Initiation (Uplink Receiving Level
Rank = 3)
5 S3304C: Number of MRs during Handover Initiation (Uplink Receiving Level
Rank = 4)
6 S3305C: Number of MRs during Handover Initiation (Uplink Receiving LevelRank = 5)
7 S3306C: Number of MRs during Handover Initiation (Uplink Receiving LevelRank = 6)
8 S3307C: Number of MRs during Handover Initiation (Uplink Receiving Level
Rank = 7)
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Number Counter
9 S3310C: Number of MRs during Handover Initiation (Uplink Receiving
Quality Rank = 0)
10 S3311C: Number of MRs during Handover Initiation (Uplink ReceivingQuality Rank = 1)
11 S3312C: Number of MRs during Handover Initiation (Uplink ReceivingQuality Rank = 2)
12 S3313C: Number of MRs during Handover Initiation (Uplink Receiving
Quality Rank = 3)
13 S3314C: Number of MRs during Handover Initiation (Uplink ReceivingQuality Rank = 4)
14 S3315C: Number of MRs during Handover Initiation (Uplink Receiving
Quality Rank = 5)
15 S3316C: Number of MRs during Handover Initiation (Uplink ReceivingQuality Rank = 6)
16 S3317C: Number of MRs during Handover Initiation (Uplink Receiving
Quality Rank = 7)
Meaning
After receiving a valid measurement report from an MS or a valid preprocessing measurement
report from a BTS, the BSC decides whether to initiate a handover after a decision. Ifdeciding to initiate a handover, the BSC triggers the counters based on the receiving level (1– 7) and the receiving quality (1–7).
Trigger Point
The measurement is triggered when the BSC decides to initiate a handover based on a valid
measurement report from an MS or a valid preprocessing measurement report from a BTS.
Formula
None.
12.19.3 Mean Uplink Receiving Level during Handover Initiationper Cell
Counter
AS330C: Mean Uplink Receiving Level during Handover Initiation
Meaning
After receiving a valid measurement report from an MS or a valid preprocessing measurement
report from a BTS, the BSC sums up the uplink receiving level based on the measurement
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report if deciding to initiate a handover. At the end of the measurement period, the BSCdivides the sum by the number of handover initiations to obtain the Mean Uplink ReceivingLevel during Handover Initiation.
Trigger Point None.
Formula
Mean Uplink Receiving Level during Handover Initiation =
Uplink Receiving Level during Handover Initiation/
(Outgoing External Inter-Cell Handover Requests+
Outgoing Internal Inter-Cell Handover Requests+
Internal Intra-Cell Handover Requests (SDCCH) +
Internal Intra-Cell Handover Requests (TCH))
12.19.4 Mean Uplink Receiving Quality during HandoverInitiation per Cell
Counter
AS331C: Mean Uplink Receiving Quality during Handover Initiation
MeaningAfter receiving a valid measurement report from an MS or a valid preprocessing measurementreport from a BTS, the BSC sums up the uplink receiving quality based on the measurement
report if deciding to initiate a handover. At the end of the measurement period, the BSCdivides the sum by the number of handover initiations to obtain the Mean Uplink Receiving
Quality during Handover Initiation.
Trigger Point
None.
Formula
Mean Uplink Receiving Quality during Handover Initiation =
Uplink Receiving Quality during Handover Initiation/
(Outgoing External Inter-Cell Handover Requests+
Inter-BSC Cell Outgoing Handover Requests +
Internal Intra-Cell Handover Requests (SDCCH) +
Internal Intra-Cell Handover Requests (TCH))
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12.19.5 Concentric Cell Handover Initiation MR AnalyzedMeasurement (Receiving Level) per Cell
CounterTable 12-85 lists the counters of Concentric Cell Handover Initiation MR AnalyzedMeasurement (Receiving Level) per Cell.
Table 12-85 Counters of Concentric Cell Handover Initiation MR Analyzed Measurement(Receiving Level) per Cell
Number Counter
1 AS330A: Mean Uplink Receiving Level during Concentric Cell Handover
Initiation (Overlay to Underlay)
2 AS332A: Mean Downlink Receiving Level during Concentric Cell HandoverInitiation (Overlay to Underlay)
3 AS330B: Mean Uplink Receiving Level during Concentric Cell HandoverInitiation (Underlay to Overlay)
4 AS332B: Mean Downlink Receiving Level during Concentric Cell HandoverInitiation (Underlay to Overlay)
Meaning
After receiving a valid measurement report from an MS or a valid preprocessing measurement
report from a BTS, the BSC adds the reported uplink receiving level to the counter UplinkReceiving Level during Concentric Cell Handover Initiation (Overlay to Underlay) if deciding
to initiate an overlay-to-underlay handover. In this case, the BSC also adds the downlinkreceiving level to the counter Downlink Receiving Level during Concentric Cell Handover
Initiation (Overlay to Underlay).
At the end of the measurement report, the BSC respectively divides the two sums by thenumber of Internal Intra-Cell Handover Requests (Overlay to Underlay) to obtain the Mean
Uplink Receiving Level during Concentric Cell Handover Initiation (Overlay to Underlay)
and the Mean Downlink Receiving Level during Concentric Cell Handover Initiation(Overlay to Underlay).
After receiving a valid measurement report from an MS or a valid preprocessing measurement
report from a BTS, the BSC adds the reported uplink receiving level to the counter UplinkReceiving Level during Concentric Cell Handover Initiation (Underlay to Overlay) if decidingto initiate an underlay-to-overlay handover. In this case, the BSC also adds the downlink
receiving level to the counter Downlink Receiving Level during Concentric Cell Handover
Initiation (Underlay to Overlay).
At the end of the measurement report, the BSC respectively divides the two sums by the
number of Internal Intra-Cell Handover Requests (Underlay to Overlay) to obtain the Mean
Uplink Receiving Level during Concentric Cell Handover Initiation (Underlay to Overlay)and the Mean Downlink Receiving Level during Concentric Cell Handover Initiation(Underlay to Overlay).
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Trigger Point
None.
FormulaMean Uplink Receiving Level during Concentric Cell Handover Initiation (Overlay to
Underlay)=
Uplink Receiving Level during Concentric Cell Handover Initiation (Overlay toUnderlay)/Internal Intra-Cell Handover Requests (Overlay to Underlay)
Mean Downlink Receiving Level during Concentric Cell Handover Initiation (Overlay to
Underlay)=
Downlink Receiving Level during Concentric Cell Handover Initiation (Overlay toUnderlay)/Internal Intra-Cell Handover Requests (Overlay to Underlay)
Mean Uplink Receiving Level during Concentric Cell Handover Initiation (Underlay toOverlay)=
Uplink Receiving Level during Concentric Cell Handover Initiation (Underlay to
Overlay)/Internal Intra-Cell Handover Requests (Underlay to Overlay)
Mean Downlink Receiving Level during Concentric Cell Handover Initiation (Underlay toOverlay)=
Downlink Receiving Level during Concentric Cell Handover Initiation (Underlay to
Overlay)/Internal Intra-Cell Handover Requests (Underlay to Overlay)
12.19.6 Concentric Cell Handover Initiation MR Analyzed
Measurement (Timing Advance) per Cell
Counter
Table 12-86 lists the counter of Concentric Cell Handover Initiation MR Analyzed
Measurement (Timing Advance) per Cell.
Table 12-86 Counters of Concentric Cell Handover Initiation MR Analyzed Measurement(Timing Advance) per Cell
Number Counter
1 AS334A: Mean Timing Advance during Concentric Cell Handover Initiation(Overlay to Underlay)
2 AS334B: Mean Timing Advance during Concentric Cell Handover Initiation(Underlay to Overlay)
Meaning
After receiving a valid measurement report from an MS or a valid preprocessing measurement
report from a BTS, the BSC adds the reported TA to the counter Timing Advance Level
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during Concentric Cell Handover Initiation (Overlay to Underlay) if deciding to initiate anoverlay-to-underlay handover.
At the end of the measurement period, the BSC divides the sum by the number of Internal
Intra-Cell Handover Requests (Overlay to Underlay) to obtain the Mean Timing Advance
during Concentric Cell Handover Initiation (Overlay to Underlay).
After receiving a valid measurement report from an MS or a valid preprocessing measurement
report from a BTS, the BSC adds the reported TA to the counter Timing Advance Levelduring Concentric Cell Handover Initiation (Underlay to Overlay) if deciding to initiate anunderlay-to-overlay handover.
At the end of the measurement period, the BSC divides the sum by the number of InternalIntra-Cell Handover Requests (Underlay to Overlay) to obtain the Mean Timing Advanceduring Concentric Cell Handover Initiation (Underlay to Overlay).
Trigger Point
None.
Formula
Mean Timing Advance during Concentric Cell Handover Initiation (Overlay to Underlay)
= Timing Advance during Concentric Cell Handover Initiation (Overlay to Underlay)/InternalIntra-Cell Handover Requests (Overlay to Underlay)
Mean Timing Advance during Concentric Cell Handover Initiation (Underlay to Overlay)
= Timing Advance during Concentric Cell Handover Initiation (Underlay to Overlay)/Internal
Intra-Cell Handover Requests (Underlay to Overlay)
12.20 KPI Measurement per Cell
12.20.1 Overview
Table 12-87 lists the counters of KPI Measurement per Cell.
Table 12-87 Counters of KPI Measurement per Cell
Number Counter
1 K3100: Immediate Assignment Requests
2 K3101: Immediate Assignment Commands
3 K3000: SDCCH Seizure Requests
4 K3001: Failed SDCCH Seizures due to Busy SDCCH
5 K3003: Successful SDCCH Seizures
6 K3004: Traffic Volume on SDCCH
7 K3005: Available SDCCHs
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Number Counter
8 K3006: Configured SDCCHs
9 K3020: TCH Seizure Requests (Signaling Channel)
10 K3021: Failed TCH Seizures due to Busy TCH (Signaling Channel)
11 K3023: Successful TCH Seizures (Signaling Channel)
12 K3022: Call Drops on TCH (Signaling Channel)
13 K3024: Traffic Volume on TCH (Signaling Channel)
14 K3010A: TCH Seizure Requests (Traffic Channel)
15 K3011A: Failed TCH Seizures due to Busy TCH (Traffic Channel)
16 K3013A: Successful TCH Seizures (Traffic Channel)
17 K3012A: Call Drops on TCH in Stable State (Traffic Channel)
18 K3010B: TCH Seizure Requests in TCH Handovers (Traffic Channel)
19 K3011B: Failed TCH Seizures in TCH Handovers due to Busy TCH (TrafficChannel)
20 K3013B: Successful TCH Seizures in TCH handovers (Traffic Channel)
21 K3012B: Call Drops in TCH Handovers (Traffic Channel)
22 K3014: Traffic Volume on TCH (Traffic Channel)
23 K3015: Available TCHs
24 K3016: Configured TCHs
25 K3170: Dual-Band Handover Requests
26 K3173: Successful Dual-Band Handovers
12.20.2 Immediate Assignment Requests
CounterK3100: Immediate Assignment Requests
Meaning
To obtain the service from the network, an MS sends a CHAN REQ message. After receiving
this message, the BTS sends a CHAN RQD message to the BSC for a dedicated channel. Thiscounter applies to the channel accesses due to all causes but packet services.
Trigger Point
None.
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Formula
Immediate Assignment Requests =
[Channel Requests (Circuit Service)]
12.20.3 Immediate Assignment Commands
Counter
K3101: Immediate Assignment Commands
Meaning
In an immediate assignment procedure, the MS reports a CHAN REQ message to the BTS.The BTS sends a CHAN RQD message to the BSC. The BSC allocates a signaling channel
for the MS and activates the channel. If the BSC receives a CHAN ACTIV ACK messagefrom the BTS, it is an indication that the BTS already prepares the channel. The BSC sends an
IMM ASSIGN CMD message to the MS, instructing the MS to access the specified signalingchannel. This channel may be an SDCCH or TCH. This counter applies to the channel
accesses due to all causes but packet services.
Trigger Point
None.
Formula
Immediate Assignment Commands =
[Immediate Assignment Commands (Circuit Service)]
12.20.4 SDCCH Seizure Requests
Counter
K3000: SDCCH Seizure Requests
Meaning
In an immediate assignment procedure, the MS requests a channel from the BSS. In an inter-BSC incoming handover procedure, the MSC requests the BSS to allocate a channel for the
MS. In an intra-BSC incoming handover procedure, the BSC requests a channel from the BSS.
In the procedures mentioned previously, the BSC triggers the counter after receiving a requestfor SDCCH.
Trigger Point
None.
Formula
SDCCH Seizure Requests =
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[Channel Assignment Requests in Immediate Assignment Procedure (SDCCH)] +
[Internal Intra-Cell Handover Requests (SDCCH)] +
[Incoming Internal Inter-Cell Handover Requests (SDCCH) (900/850-900/850)] +
[Incoming Internal Inter-Cell Handover Requests (SDCCH) (1800/1900-1800/1900)] +
[Incoming Internal Inter-Cell Handover Requests (SDCCH) (900/850-1800/1900)] +
[Incoming Internal Inter-Cell Handover Requests (SDCCH) (1800/1900-900/850)] +
[Incoming External Inter-Cell Handover Requests (SDCCH) (900/850-900/850)] +
[Incoming External Inter-Cell Handover Requests (SDCCH) (1800/1900-1800/1900)] +
[Incoming External Inter-Cell Handover Requests (SDCCH) (900/850-1800/1900)] +
[Incoming External Inter-Cell Handover Requests (SDCCH) (1800/1900-900/850)]
12.20.5 Failed SDCCH Seizures due to Busy SDCCH
Counter
K3001: Failed SDCCH Seizures due to Busy SDCCH
Meaning
In an immediate assignment procedure or a handover procedure, the BSC triggers the counter
when the MS or MSC requests an SDCCH from the BSS but no SDCCH is available.
Trigger Point None.
Formula
Failed SDCCH Seizures due to Busy SDCCH =
[Failed Channel Assignments due to Busy or Not Configured Channels in ImmediateAssignment Procedure (SDCCH)] +
[Failed Internal Intra-Cell Handovers (Channel Unavailable) (SDCCH)] +
[Failed Incoming Internal Inter-Cell Handovers (Channel Unavailable) (SDCCH)] +
[Failed Incoming External Inter-Cell Handovers (Channel Unavailable) (SDCCH)]
12.20.6 Successful SDCCH Seizures
Counter
K3003: Successful SDCCH Seizures
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Meaning
In an SDCCH immediate assignment procedure, the BTS sends a channel activation success
message to the BSC. After receiving this message, the BSC regards that the assignment of
SDCCH succeeds. In an SDCCH handover procedure, the BTS sends a handover detection
message to the target cell. After receiving this message, the BSC regards that the assignmentof SDCCH succeeds.
This counter applies to the previous two cases.
Trigger Point
None.
Formula
Successful SDCCH Seizures=
[Channel Activation Attempts in Immediate Assignment Procedure (SDCCH)]-
[CHAN ACTIV NACK Messages Sent by BTS in Immediate Assignment Procedure(SDCCH)]-
[Channel Activation Timeouts in Immediate Assignment Procedure (SDCCH)] +
[Internal Intra-Cell Handover Detection Messages Received by BSC (SDCCH)] +
[Incoming Internal Inter-Cell Handover Detection Messages Received by BSC (SDCCH)] +
[Incoming External Inter-Cell Handover Detection Messages Received by BSC (SDCCH)]
12.20.7 Traffic Volume on SDCCH
Counter
K3004: Traffic Volume on SDCCH
Meaning
This counter measures the ratio of the duration for which the MS occupies the SDCCH to themeasurement period. The duration for which the MS occupies the SDCCH is equal to the
number of reports from the MS on the SDCCH multiplied by the reporting period 0.47s.
Trigger Point
None.
Formula
Traffic Volume on SDCCH =
[Traffic Volume on Signaling Channel (SDCCH)]
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12.20.8 Traffic Volume on SDCCH
Counter
K3004: Traffic Volume on SDCCH
Meaning
The unit of this counter is Erlang.
Trigger Point
None.
Formula
Traffic Volume on SDCCH =
[Traffic Volume on Signaling Channel (SDCCH)]
12.20.9 Available SDCCHs
Counter
K3005: Available SDCCHs
Meaning
This counter measures the number of SDCCHs in idle or busy state in a cell of the BSC. Here,the SDCCHs include those obtained dynamically from TCHs. This counter is equal to the
total number of available SDCCHs divided by the number of sample points.
Trigger Point
None.
Formula
Available SDCCHs =
[Mean Number of Available Channels (SDCCH)]
12.20.10 Configured SDCCHs
Counter
K3006: Configured SDCCHs
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Meaning
This counter measures the number of SDCCH configured for a cell of the BSC. Here, the
SDCCHs include those obtained dynamically from TCHs. This counter measures the mean
number of configured SDCCHs.
Trigger Point
None.
Formula
Configured SDCCHs =
[Mean Number of Configured Channels (SDCCH)]
12.20.11 TCH Seizure Requests (Signaling Channel)
Counter
K3021: TCH Seizure Requests (Signaling Channel)
Meaning
This counter measures the number of the CHAN RQD messages sent from the BTS to theBSC in an immediate TCH assignment procedure.
Trigger Point
None.
Formula
TCH Seizure Requests (Signaling Channel) =
[Channel Assignment Requests in Immediate Assignment Procedure (TCH)]
12.20.12 Failed TCH Seizures due to Busy TCH (SignalingChannel)
Counter
K3021: Failed TCH Seizures due to Busy TCH (Signaling Channel)
Meaning
This counter measures the times the BSC has no TCH (signaling channel) to allocate in an
immediate TCH assignment procedure.
Trigger Point
None.
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Formula
Failed TCH Seizures due to Busy TCH (Signaling Channel) =
[Channel Assignment Requests in Immediate Assignment Procedure (TCH)]-
[Immediate Assignment Commands (TCHF)]-
[Immediate Assignment Commands (TCHH)]
12.20.13 Successful TCH Seizures (Signaling Channel)
Counter
K3023: Successful TCH Seizures (Signaling Channel)
Meaning
This counter measures the number of successful activations of the TCHs (signaling channels)
allocated by the BSC in an immediate TCH assignment procedure.
Trigger Point
None.
Formula
Successful TCH Seizures (Signaling Channel) =
([Channel Activation Attempts in Immediate Assignment Procedure (TCHF)] +
[Channel Activation Attempts in Immediate Assignment Procedure (TCHH)])-
([CHAN ACTIV NACK Messages Sent by BTS in Immediate Assignment Procedure (TCHF)]+
[CHAN ACTIV NACK Messages Sent by BTS in Immediate Assignment Procedure (TCHH)]
+
[Channel Activation Timeouts in Immediate Assignment Procedure (TCHF)] +
[Channel Activation Timeouts in Immediate Assignment Procedure (TCHH)])
12.20.14 Call Drops on TCH (Signaling Channel)
Counter
K3022: Call Drops on TCH (Signaling Channel)
Meaning
This counter measures the number of call drops occurred although the MS sets up on the TCHa normal connection with the service type of signaling.
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Trigger Point
None.
FormulaCall Drops on TCH (Signaling Channel) =
[Call Drops on Signaling Channel]-
[Call Drops on SDCCH]
12.20.15 Traffic Volume on TCH (Signaling Channel)
Counter
K3024: Traffic Volume on TCH (Signaling Channel)
Meaning
This counter measures the ratio of the duration for which the MS occupies the TCH (signaling
channel) to the measurement period. The duration for which the MS occupies the TCH isequal to the number of reports from the MS on the TCH multiplied by the reporting period
0.48s.
Trigger Point
None.
Formula
Traffic Volume on TCH (Signaling Channel) =
[Traffic Volume on Signaling Channel (TCH)]
12.20.16 TCH Seizure Requests (Traffic Channel)
Counter
K3010A: TCH Seizure Requests (Traffic Channel)
Meaning
This counter measures the number of TCH (traffic channel) seizure requests received by the
BSC from the MSC.
Trigger Point
None.
Formula
TCH Seizure Requests (Traffic Channel) =
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[Assignment Requests]
12.20.17 Failed TCH Seizures due to Busy TCH (Traffic Channel)
Counter
K3011A: Failed TCH Seizures due to Busy TCH (Traffic Channel)
Meaning
This counter measures the number of failed TCH (traffic channel) seizures due to no TCH
available.
Trigger Point
None.
Formula
Failed TCH Seizures due to Busy TCH (Traffic Channel) =
[Failed Assignments (Channel Unavailable)]
12.20.18 Successful TCH Seizures (Traffic Channel)
Counter
K3013A: Successful TCH Seizures (Traffic Channel)
Meaning
This counter measures the number of successful TCH (traffic channel) seizures by the MS.
Trigger Point
None.
Formula
Successful TCH Seizures (Traffic Channel) =
[Successful Assignments]
12.20.19 Call Drops on TCH in Stable State (Traffic Channel)
Counter
K3012A: Call Drops on TCH in Stable State (Traffic Channel)
Meaning
This counter measures the number of call drops occurred after the MS is in the stablecommunication state on the TCH (traffic channel).
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Trigger Point
None.
FormulaCall Drops on TCH in Stable State (Traffic Channel) =
[Call Drops on Radio Interface in Stable State (TCH)] +
[Call Drops due to No MRs from MS for a Long Time (TCH)] +
[Call Drops due to Abis Terrestrial Link Failure (TCH)] +
[Call Drops due to Equipment Failure (TCH)] +
[Call Drops due to Forced Handover (TCH)]
12.20.20 TCH Seizure Requests in TCH Handovers (TrafficChannel)
Counter
K3010B: TCH Seizure Requests in TCH Handovers (Traffic Channel)
Meaning
In an intra-BSC incoming handover procedure, the MS requests the BSS to reallocate a TCH
(traffic channel). In an inter-BSC incoming handover procedure, the MSC requests the BSS to
reallocate a TCH (traffic channel).This counter measures the total number of TCH seizure requests in the procedures mentioned previously.
Trigger Point
None.
Formula
TCH Seizure Requests in TCH Handovers (Traffic Channel) =
[Internal Intra-Cell Handover Requests (TCH)] +
[Incoming Internal Inter-Cell Handover Requests (TCH) (900/850-900/850)] +
[Incoming Internal Inter-Cell Handover Requests (TCH) (1800/1900-1800/1900)] +
[Incoming Internal Inter-Cell Handover Requests (TCH) (900/850-1800/1900)] +
[Incoming Internal Inter-Cell Handover Requests (TCH) (1800/1900-900/850)] +
[Incoming External Inter-Cell Handover Requests (TCH) (900/850-900/850)] +
[Incoming External Inter-Cell Handover Requests (TCH) (1800/1900-1800/1900)] +
[Incoming External Inter-Cell Handover Requests (TCH) (900/850-1800/1900)] +
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[Incoming External Inter-Cell Handover Requests (TCH) (1800/1900-900/850)]
12.20.21 Failed TCH Seizures in TCH Handovers due to BusyTCH (Traffic Channel)
Counter
K3011B: Failed TCH Seizures in TCH Handovers due to Busy TCH (Traffic Channel)
Meaning
This counter measures the number of failed TCH (traffic channel) seizures due to no TCH
available in TCH handovers.
Trigger Point
None.
Formula
Failed TCH Seizures in TCH Handovers due to Busy TCH (Traffic Channel) =
[Failed Internal Intra-Cell Handovers (Channel Unavailable) (TCH)] +
[Failed Incoming Internal Inter-Cell Handovers (Channel Unavailable) (TCH)] +
[Failed Incoming External Inter-Cell Handovers (Channel Unavailable) (TCH)]
12.20.22 Successful TCH Seizures in TCH Handovers (TrafficChannel)
Counter
K3013B: Successful TCH Seizures in TCH Handovers (Traffic Channel)
Meaning
This counter measures the number of successful TCH (traffic channel) seizures by the MS
during TCH handovers.
Trigger Point
None.
Formula
Successful TCH Seizures in TCH Handovers (Traffic Channel) =
[Internal Intra-Cell Handover Detection Messages Received by BSC (TCHF)] +
[Internal Intra-Cell Handover Detection Messages Received by BSC (TCHH)] +
[Incoming Internal Inter-Cell Handover Detection Messages Received by BSC (TCHF)] +
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[Incoming Internal Inter-Cell Handover Detection Messages Received by BSC (TCHH)] +
[Incoming External Inter-Cell Handover Detection Messages Received by BSC (TCHF)] +
[Incoming External Inter-Cell Handover Detection Messages Received by BSC (TCHH)]
12.20.23 Call Drops in TCH Handovers (Traffic Channel)
Counter
K3012B: Call Drops in TCH Handovers (Traffic Channel)
Meaning
This counter measures the number of call drops due to the radio interface during TCH (traffic
channel) handovers.
Trigger Point
None.
Formula
Call Drops in TCH Handovers (Traffic Channel) =
[Call Drops on Radio Interface in Handover State (TCH)]
12.20.24 Traffic Volume on TCH (Traffic Channel)
Counter
K3014: Traffic Volume on TCH (Traffic Channel)
Meaning
This counter measures the ratio of the duration for which the MS occupies the TCH (traffic
channel) to the measurement period. The duration for which the MS occupies the TCH isequal to the number of reports from the MS on the TCH multiplied by the reporting period0.48s.
Trigger Point None.
Formula
Traffic Volume on TCH (Traffic Channel) =
[Traffic Volume on TCH]
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12.20.25 Available TCHs
Counter
K3015: Available TCHs
Meaning
This counter measures the number of TCHs in idle or busy state in a cell of the BSC. Here,
the TCHs exclude the TCHs changed to SDCCHs through dynamic adjustment but include theTCHs obtained from PDCHs through dynamic adjustment. This counter is equal to the totalnumber of available TCHs divided by the number of sample points.
Trigger Point
None.
Formula
Available TCHs =
[Mean Number of Available Channels (TCH)]
12.20.26 Configured TCHs
Counter
K3016: Configured TCHs
Meaning
This counter s the number of TCHs configured for a cell of the BSC. Here, the TCHs exclude
the TCHs changed to SDCCHs through dynamic adjustment but include the TCHs obtainedfrom PDCHs through dynamic adjustment. This counter is equal to the total number of
configured TCHs divided by the number of sample points.
Trigger Point
None.
Formula
Configured TCHs =
[Mean Number of Configured Channels (TCH)]
12.20.27 Dual-Band Handover Requests
Counter
K3170: Dual-Band Handover Requests
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Meaning
This counter measures the total number of intra-BSC and inter-BSC dual-band handover
requests.
Trigger Point
None.
Formula
Dual-Band Handover Requests =
[Incoming Internal Inter-Cell Handover Requests (SDCCH) (900/850-1800/1900)] +
[Incoming Internal Inter-Cell Handover Requests (TCH) (900/850-1800/1900)] +
[Incoming External Inter-Cell Handover Requests (SDCCH) (900/850-1800/1900)] +
[Incoming External Inter-Cell Handover Requests (TCH) (900/850-1800/1900)] +
[Outgoing External Inter-Cell Handover Requests (SDCCH) (Excluding Directed Retry)(900/850-1800/1900)] +
[Outgoing External Inter-Cell Handover Requests (TCHF) (Excluding Directed Retry)
(900/850-1800/1900)] +
[Outgoing External Inter-Cell Handover Requests (TCHH) (Excluding Directed Retry)(900/850-1800/1900)] +
[Outgoing External Inter-Cell Handover Requests (Directed Retry) (900/850-1800/1900)] +
[Incoming Internal Inter-Cell Handover Requests (SDCCH) (1800/1900-900/850)] +
[Incoming Internal Inter-Cell Handover Requests (TCH) (1800/1900-900/850)] +
[Incoming External Inter-Cell Handover Requests (SDCCH) (1800/1900-900/850)] +
[Incoming External Inter-Cell Handover Requests (TCH) (1800/1900-900/850)] +
[Outgoing External Inter-Cell Handover Requests (SDCCH) (Excluding Directed Retry)(1800/1900-900/850)] +
[Outgoing External Inter-Cell Handover Requests (TCHF) (Excluding Directed Retry)(1800/1900-900/850)] +
[Outgoing External Inter-Cell Handover Requests (TCHH) (Excluding Directed Retry)(1800/1900-900/850)] +
[Outgoing External Inter-Cell Handover Requests (Directed Retry) (1800/1900-900/850)]
12.20.28 Successful Dual-Band Handovers
Counter
K3173: Successful Dual-Band Handovers
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Meaning
This counter measures the total number of successful intra-BSC and inter-BSC dual-band
handovers.
Trigger Point
None.
Formula
Successful Dual-Band Handovers=
([Incoming Internal Inter-Cell Handover Requests (SDCCH) (900/850-1800/1900)] +
[Incoming Internal Inter-Cell Handover Requests (TCH) (900/850-1800/1900)] +
[Incoming External Inter-Cell Handover Requests (SDCCH) (900/850-1800/1900)] +
[Incoming External Inter-Cell Handover Requests (TCH) (900/850-1800/1900)] +
[Outgoing External Inter-Cell Handover Requests (SDCCH) (Excluding Directed Retry)(900/850-1800/1900)] +
[Outgoing External Inter-Cell Handover Requests (TCHF) (Excluding Directed Retry)
(900/850-1800/1900)] +
[Outgoing External Inter-Cell Handover Requests (TCHH) (Excluding Directed Retry)(900/850-1800/1900)] +
[Outgoing External Inter-Cell Handover Requests (Directed Retry) (900/850-1800/1900)] +
[Incoming Internal Inter-Cell Handover Requests (SDCCH) (1800/1900-900/850)] +
[Incoming Internal Inter-Cell Handover Requests (TCH) (1800/1900-900/850)] +
[Incoming External Inter-Cell Handover Requests (SDCCH) (1800/1900-900/850)] +
[Incoming External Inter-Cell Handover Requests (TCH) (1800/1900-900/850)] +
[Outgoing External Inter-Cell Handover Requests (SDCCH) (Excluding Directed Retry)(1800/1900-900/850)] +
[Outgoing External Inter-Cell Handover Requests (TCHF) (Excluding Directed Retry)(1800/1900-900/850)] +
[Outgoing External Inter-Cell Handover Requests (TCHH) (Excluding Directed Retry)(1800/1900-900/850)] +
[Outgoing External Inter-Cell Handover Requests (Directed Retry) (1800/1900-900/850)])-
([Failed Incoming Internal Inter-Cell Handovers (SDCCH) (900/850-1800/1900)] +
[Failed Incoming Internal Inter-Cell Handovers (TCH) (900/850-1800/1900)] +
[Failed Incoming External Inter-Cell Handovers (SDCCH) (900/850-1800/1900)] +
[Failed Incoming External Inter-Cell Handovers (TCH) (900/850-1800/1900)] +
[Failed Outgoing External Inter-Cell Handovers (SDCCH) (Excluding Directed Retry)
(900/850-1800/1900)] +
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[Failed Outgoing External Inter-Cell Handovers (TCHF) (Excluding Directed Retry)(900/850-1800/1900)] +
[Failed Outgoing External Inter-Cell Handovers (TCHH) (Excluding Directed Retry)
(900/850-1800/1900)] +
[Failed Outgoing External Inter-Cell Handovers (Directed Retry) (900/850-1800/1900)] +
[Failed Incoming Internal Inter-Cell Handovers (SDCCH) (1800/1900-900/850)] +
[Failed Incoming Internal Inter-Cell Handovers (TCH) (1800/1900-900/850)] +
[Failed Incoming External Inter-Cell Handovers (SDCCH) (1800/1900-900/850)] +
[Failed Incoming External Inter-Cell Handovers (TCH) (1800/1900-900/850)] +
[Failed Outgoing External Inter-Cell Handovers (SDCCH) (Excluding Directed Retry)(1800/1900-900/850)] +
[Failed Outgoing External Inter-Cell Handovers (TCHF) (Excluding Directed Retry)
(1800/1900-900/850)] +
[Failed Outgoing External Inter-Cell Handovers (TCHH) (Excluding Directed Retry)
(1800/1900-900/850)] +
[Failed Outgoing External Inter-Cell Handovers (Directed Retry) (1800/1900-900/850)])
12.21 Calls Discarded due to Overload per LAPD
12.21.1 Overview
The measurement unit Calls Discarded due to Overload per LAPD is used to measure thenumber of random access requests discarded on LAPD.
Table 12-88 lists the counter of Calls Discarded due to Overload per LAPD.
Table 12-88 Counter of Calls Discarded due to Overload per LAPD
Number Counter
1 A533: Random Access Requests Discarded on LAPD
12.21.2 Random Access Requests Discarded on LAPD
Counter
A533: Random Access Requests Discarded on LAPD
Meaning
If the number of random access messages exceeds those that can be processed in unit time,
usually 100ms, the BSC discards the new requests and triggers the counter.
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Trigger Point
The measurement is triggered when the BSC discards a new random access request because
of the upper limit of flow control exceeded.
Formula
None.
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13 MR Measurement
About This Chapter
The following table lists the sections of this chapter.
Section Describes
13.1 Overview of MRMeasurement
Introduces the measurement units of MR Measurement.
13.2 Number of MRs per Cell Describes the functions and counters of Number of MRs per Cell.
13.3 Interference BandMeasurement per TRX Describes the functions and counters of Interference BandMeasurement.
13.4 Power Control Messages per Cell
Describes the functions and counters of Power ControlMessages per Cell.
13.5 Neighbor Cell LevelMeasurement per Cell
Describes the functions and counters of Neighbor CellLevel Measurement per Cell.
13.6 TCHF Receive Level
Measurement per TRX
Describes the functions and counters of TCHF Receive
level Measurement per TRX.
13.7 TCHH Receive Level
Measurement per TRX
Describes the functions and counters of TCHH Receive
level Measurement per TRX.
13.8 Receive QualityMeasurement per TRX
Describes the functions and counters of Receive QualityMeasurement per TRX.
13.9 Uplink-and-Downlink
Balance Measurement perTRX
Describes the functions and counters of Uplink-and-
Downlink Balance Measurement per TRX.
13.10 Number of MRs Basedon TA per TRX
Describes the functions and counters of TA TrafficDistribution Measurement per TRX.
13.11 Radio Link FailureMeasurement per TRX
Describes the functions and counters of Radio LinkFailure Measurement per TRX.
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Section Describes
13.12 Radio Link Failure
Measurement based on TA perTRX
Describes the functions and counters of Radio Link
Failure Measurement by TA Traffic Distribution perTRX.
13.13 RQI Measurement based
on TA per TRX
Describes the functions and counters of RQI
Measurement by TA Traffic Distribution per TRX.
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13.1 Overview of MR Measurement
After seizing a specific channel, the MS periodically reports measurement reports (MRs) tothe BSC. The BSC performs power control and handover decision based on the MRs.
MR Measurement refers to the measurement of counters related to MRs and helps withnetwork optimization.
Table 13-1 lists the measurement units of MR Measurement.
Table 13-1 Measurement units of MR Measurement
Number Measurement Unit
1 Number of MRs per Cell
2 Interference Band Measurement per TRX
3 Power Control Messages per Cell
4 Neighbor Cell Level Measurement per Cell
5 TCHF Receive Level Measurement per TRX
6 TCHH Receive Level Measurement per TRX
7 Receive Quality Measurement per TRX
8 Uplink-and-Downlink Balance Measurement per TRX
9 Number of MRs Based on TA per TRX
10 Radio Link Failure Measurement per TRX
11 Radio Link Failure Measurement based on TA per TRX
12 RQI Measurement based on TA per TRX
13.2 Number of MRs per Cell
13.2.1 Overview of Number of MRs per Cell
Number of MRs per Cell refers to the measurement of the number of MRs received by
channels in a cell.
Table 13-2 lists the counters of Number of MRs per Cell.
Table 13-2 Counters of Number of MRs per Cell
Counter Section
Sampled MRs per Cell 13.2.2
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Counter Section
Analyzed MRs per Cell 13.2.3
13.2.2 Sampled MRs per Cell
Counter
Table 13-3 lists the counters of Sampled MRs per Cell.
Table 13-3 Counters of Sampled MRs per Cell
Number Counter
1 S3010A: MRs on Signaling Channels (SDCCH) (M900/850 Cell)
2 S3010B: MRs on Signaling Channels (SDCCH) (M1800/1900 Cell)
3 S3017A: MRs on Signaling Channels (TCHF) (M900/850 Cell)
4 S3017B: MRs on Signaling Channels (TCHF) (M1800/1900 Cell)
5 S3018A: MRs on Signaling Channels (TCHH) (M900/850 Cell)
6 S3018B: MRs on Signaling Channels (TCHH) (M1800/1900 Cell)
7 S3007A: MRs on TCHs (TCHF) (M900/850 Cell)
8 S3007B: MRs on TCHs (TCHF) (M1800/1900 Cell)
9 S3008A: MRs on TCHs (TCHH) (M900/850 Cell)
10 S3008B: MRs on TCHs (TCHH) (M1800/1900 Cell)
11 S3012: MRs on Signaling Channels (Underlaid Subcell)
12 S3011: MRs on Signaling Channels (Overlaid Subcell)
13 S3002: MRs on TCHs (Underlaid Subcell)
14 S3001: MRs on TCHs (Overlaid Subcell)
Meaning
After receiving a valid MR, or a preprocessing MR, the BSC measures the number of received
MRs based on the following factors:
Frequency band the cell is in (M900/850, M1800/1900)
Channel type (SDCCH, TCHF, and TCHH)
Cell type (normal, concentric)
Concentric cell attribute (overlaid subcell, underlaid subcell)
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Valid MRs refer to complete MRs that contain both valid uplink and downlink MRs.
Trigger Point
The BSC measures the number of received MRs based on the frequency band, channel type,
cell type, and concentric cell attributes, after it receives valid MRs from the MS.
Formula
None.
13.2.3 Analyzed MRs per Cell
Counter
Table 13-4 lists the counters of Analyzed MRs per Cell.
Table 13-4 Counters of Analyzed MRs per Cell
Number Counter
1 CR3557: Traffic Volume of TCHs (Underlaid Subcell)
2 CR3558: Traffic Volume of TCHs (Overlaid Subcell)
3 TS3010: Traffic Volume of Signaling Channels (SDCCH)
4 TS3019: Traffic Volume of Signaling Channels (TCH)
5 CR355A: Traffic Volume of TCHs
6 CS300: MRs on TCHs
7 CS3007: MRs on TCHs (TCHF)
8 CS3008: MRs on TCHs (TCHH)
9 CS301: MRs on Signaling Channels
10 CS3010: MRs on Signaling Channels (SDCCH)
11 CS3017: MRs on Signaling Channels (TCHF)
12 CS3018: MRs on Signaling Channels (TCHH)
13 CS3023: Traffic Volume of Speech Service on SDCCH
14 CS3024: Traffic Volume of Short Message Service on SDCCH
15 CS3025: Traffic Volume of USSD Service on SDCCH
Meaning
None.
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The unit of the traffic volume in Table 13-4 is Erlang.
Trigger Point
None.
Formula
Traffic Volume of TCHs (Underlaid Subcell) = Mean Number of Busy TCHs (Underlaid
Subcell)
Traffic Volume of TCHs (Overlaid Subcell) = Mean Number of Busy TCHs (Overlaid Subcell)
Traffic Volume of Signaling Channels (SDCCH) = ([MRs on Signaling Channels (SDCCH)(M900/850 Cell)] + [MRs on Signaling Channels (SDCCH) (M1800/1900
Cell)])*{47}/({100}*{GP}*{60})
Traffic Volume of Signaling Channels (TCH) = ([MRs on Signaling Channels (TCHF)(M900/850 Cell)] + [MRs on Signaling Channels (TCHF) (M1800/1900 Cell)] + [MRs on
Signaling Channels (TCHH) (M900/850 Cell)] + [MRs on Signaling Channels (TCHH)(M1800/1900 Cell)])*{48}/({100}*{GP}*{60})
Traffic Volume of TCHs = [Mean Number of Busy TCHs (TCHF) (900/850 Cell)] + [Mean
Number of Busy TCHs (TCHF) (1800/1900 Cell)] + [Mean Number of Busy TCHs (TCHH)(900/850 Cell)] + [Mean Number of Busy TCHs (TCHH) (1800/1900 Cell)]
MRs on TCHs = [MRs on TCHs (TCHF) (M900/850 Cell)] + [MRs on TCHs (TCHH)
(M900/850 Cell)]
MRs on TCHs (TCHF) = [MRs on TCHs (TCHF) (M900/850 Cell)] + [MRs on TCHs (TCHF)(M1800/1900 Cell)]
MRs on TCHs (TCHH) (M900/850 Cell) = [MRs on TCHs (TCHH) (M900/850 Cell)] +[MRs on TCHs (TCHH) (M1800/1900 Cell)]
MRs on Signaling Channels = [MRs on Signaling Channels (SDCCH)] + [MRs on Signaling
Channels (TCHF)] + [MRs on Signaling Channels (TCHH)]
MRs on Signaling Channels (SDCCH) = [MRs on Signaling Channels (SDCCH) (M900/850Cell)] + [MRs on Signaling Channels (SDCCH) (M1800/1900 Cell)]
MRs on Signaling Channels (TCHF)= [MRs on Signaling Channels (TCHF) (M900/850 Cell)]
+ [MRs on Signaling Channels (TCHF) (M1800/1900 Cell)]
MRs on Signaling Channels (TCHH) = [MRs on Signaling Channels (TCHH) (M900/850Cell)] + [MRs on Signaling Channels (TCHH) (M1800/1900 Cell)]
13.3 Interference Band Measurement per TRX
13.3.1 Overview of Interference Band Measurement per TRX
Interference band is the interference level contained in the RF RES IND message that the BTS
reports to the BSC when the channel is idle. There are five levels. The level range of each band is set through the Local Maintenance Terminal (LMT).
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Table 13-5 lists the typical settings of the power level range.
Table 13-5 Power level range of the interference band
Interference Band Power Level Range
Interference band 1 –105 dBm to –98 dBm
Interference band 2 –98 dBm to –90 dBm
Interference band 3 –90 dBm to –87 dBm
Interference band 4 –87 dBm to –85 dBm
Interference band 5 –85 dBm to –47 dBm
The higher rank suggests higher interference level. An idle channel at interference band 4 or 5
suggests the existence of interference.
Interference Band Measurement per TRX refers to the measurement of idle channels that arein the interference bands.
Table 13-6 lists the counters of Interference Band Measurement per TRX.
Table 13-6 Counters of Interference Band Measurement per TRX
Counter Section
Sampled Measurement of Interference Band per TRX 13.3.2
Analyzed Measurement of Interference Band per TRX 13.3.3
13.3.2 Sampled Measurement of Interference Band per TRX
Counter
Table 13-7 lists the counters of Sampled Measurement of Interference Band.
Table 13-7 Counters of Sampled Measurement of Interference Band
Number Counter
1 S4210A: Uplink Interference Indication Messages (SDCCH)
2 S4210B: Downlink Interference Indication Messages (SDCCH)
3 S4219A: Uplink Interference Indication Messages (TCH)
4 S4219B: Downlink Interference Indication Messages (TCH)
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Meaning
In HUAWEI Channel Allocation Algorithm II, the BTS compares the level and quality in the
MR with the thresholds set in data configuration. If both the level and the quality exceed the
preset thresholds, the counters are measured based on the channel type (TCH or SDCCH) and
interference direction (uplink or downlink).
Trigger Point
The counters are measured based on the channel type (TCH or SDCCH) and interference
direction (uplink or downlink) if the level and the quality exceed the preset thresholds.
Formula
None.
13.3.3 Analyzed Measurement of Interference Band per TRXCounter
Table 13-8 lists the counters of Analyzed Measurement of Interference Band per TRX.
Table 13-8 Counters of Analyzed Measurement of Interference Band per TRX
Number Counter
1 AS4200A: Mean Number of SDCCHs in Interference Band 1
2 AS4200B: Mean Number of SDCCHs in Interference Band 2
3 AS4200C: Mean Number of SDCCHs in Interference Band 3
4 AS4200D: Mean Number of SDCCHs in Interference Band 4
5 AS4200E: Mean Number of SDCCHs in Interference Band 5
6 AS4207A: Mean Number of TCHFs in Interference Band 1
7 AS4207B: Mean Number of TCHFs in Interference Band 2
8 AS4207C: Mean Number of TCHFs in Interference Band 3
9 AS4207D: Mean Number of TCHFs in Interference Band 4
10 AS4207E: Mean Number of TCHFs in Interference Band 5
11 AS4208A: Mean Number of TCHHs in Interference Band 1
12 AS4208B: Mean Number of TCHHs in Interference Band 2
13 AS4208C: Mean Number of TCHHs in Interference Band 3
14 AS4208D: Mean Number of TCHHs in Interference Band 4
15 AS4208E: Mean Number of TCHHs in Interference Band 5
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Meaning
The BSC receives from the BTS the RF RES IND message that contains the interference band
levels of all the idle channels in a TRX. Then the BSC measures the counters according to the
channel type (TCHF, TCHH, or SDCCH) and the interference band level.
Mean Number of SDCCHs in Interference Band = Number of SDCCHs in Interference Band/[Sampled Number of Interference Bands]
Trigger Point
None.
Formula
Mean Number of SDCCHs in Interference Band 1 = [Number of SDCCHs in Interference
Band 1]/[ Sampled Number of Interference Bands]
Mean Number of SDCCHs in Interference Band 2 = [Number of SDCCHs in InterferenceBand 2]/[ Sampled Number of Interference Bands]
Mean Number of SDCCHs in Interference Band 3 = [Number of SDCCHs in Interference
Band 3]/[ Sampled Number of Interference Bands]
Mean Number of SDCCHs in Interference Band 4 = [Number of SDCCHs in InterferenceBand 4]/[ Sampled Number of Interference Bands]
Mean Number of SDCCHs in Interference Band 5 = [Number of SDCCHs in InterferenceBand 5]/[ Sampled Number of Interference Bands]
Mean Number of TCHFs in Interference Band 1 = [Number of TCHFs in Interference Band
1]/[ Sampled Number of Interference Bands]
Mean Number of TCHFs in Interference Band 2 = [Number of TCHFs in Interference Band2]/[ Sampled Number of Interference Bands]
Mean Number of TCHFs in Interference Band 3 = [Number of TCHFs in Interference Band
3]/[ Sampled Number of Interference Bands]
Mean Number of TCHFs in Interference Band 4 = [Number of TCHFs in Interference Band
4]/[ Sampled Number of Interference Bands]
Mean Number of TCHFs in Interference Band 5 = [Number of TCHFs in Interference Band
5]/[ Sampled Number of Interference Bands]
Mean Number of TCHHs in Interference Band 1 = [Number of TCHHs in Interference Band
1]/[ Sampled Number of Interference Bands]
Mean Number of TCHHs in Interference Band 2 = [Number of TCHHs in Interference Band2]/[ Sampled Number of Interference Bands]
Mean Number of TCHHs in Interference Band 3 = [Number of TCHHs in Interference Band
3]/[ Sampled Number of Interference Bands]
Mean Number of TCHHs in Interference Band 4 = [Number of TCHHs in Interference Band4]/[ Sampled Number of Interference Bands]
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Mean Number of TCHHs in Interference Band 5 = [Number of TCHHs in Interference Band5]/[ Sampled Number of Interference Bands]
13.4 Power Control Messages per Cell
13.4.1 Overview of Power Control Messages per Cell
Power control refers to changing the transmission power of the MS or the BTS. The purpose
of power control is to reduce the interference, raise the spectrum usage, and prolong the
lifespan of the MS battery.
The factors that influence power control are the receive level and quality of received signalsin the MRs. If the quality of both the receive level and the received signals are good, you can
reduce the interference by lowering the transmission power at the peer end.
Power Control Messages per Cell refers to the measurement of the transmission power andthe receive level between the BTS and the MS.
Table 13-9 lists the counters of Power Control Messages per Cell.
Table 13-9 Counters of Power Control Messages per Cell
Counter Section
Number of Power Control Messages per Cell 13.4.2
Sampled Power Rank During Power Control per Cell 13.4.3
Analyzed Power Rank During Power Control per Cell 13.4.4
Sampled Level of Power Control Signals per Cell 13.4.5
Analyzed Level of Power Control Signals per Cell 13.4.6
Sampling Quality of Power Control Signals per Cell 13.4.7
Analyzed Quality of Power Control Signals per Cell 13.4.8
Sampled Duration of Maximum Power per Cell 13.4.9
Analyzed Duration of Maximum Power per Cell 13.4.10
Distance Between MS and BTS per Cell 13.4.11
Maximum Distance Between MS and BTS per Cell 13.4.12
Number of Power Control Messages per Cell 13.4.13
Mean Distance Between MS and BTS per Cell 13.4.14
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13.4.2 Number of Power Control Messages per Cell
Counter
Table 13-10 lists the counters of Number of Power Control Messages per Cell.
Table 13-10 Counters of Number of Power Control Messages per Cell
Number Counter
1 S3230A: Number of Power Control Increase Messages Sent to MS
2 S3230B: Number of Power Control Decrease Messages Sent to MS
3 S3231A: Number of Power Control Increase Messages Sent to BTS
4 S3231B: Number of Power Control Decrease Messages Sent to BTS
Meaning
After receiving the MR, the BSC compares the uplink receive level and the uplink receive
quality with the preset thresholds and makes the following decisions:
If the transmission power of the MS need be increased, the BSC sends the powerincrease request to the MS, and the S3230A: Number of Power Control IncreaseMessages Sent to MS is measured.
If the transmission power of the MS need be decreased, the BSC sends the power
decrease request to the MS, and the S3230B: Number of Power Control DecreaseMessages Sent to MS is measured.
If the transmission power of the BTS need be increased, the BSC sends the powerincrease request to the BTS, and the S3231A: Number of Power Control IncreaseMessages Sent to BTS is measured.
If the transmission power of the BTS need be decreased, the BSC sends the power
decrease request to the BTS, and the S3231B: Number of Power Control DecreaseMessages Sent to BTS is measured.
Trigger Point
The BSC measures the counters based on the power control objectives (MS or BTS) and type(to increase or decrease the transmit power) after receiving the valid MRs from the MS.
Formula
None.
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13.4.3 Sampled Power Rank During Power Control per Cell
Counter
Table 13-11 lists the counters of Sampled Power Rank During Power Control per Cell.
Table 13-11 Counters of Sampled Power Rank During Power Control per Cell
Number Counter
1 S3240: MS Power Rank
2 S3241: BTS Power Rank
3 S327A: Number of Times (Maximum Uplink Transmit Power)
4 S327B: Number of Times (Maximum Downlink Transmit Power)
Meaning
In S3240: MS Power Rank, higher rank of the transmit power indicates smaller transmit
power of the MS.
In S3241: BTS Power Rank, higher rank of the transmit power indicates smaller transmit power of the BTS.
The counter S327A: Number of Times (Maximum Uplink Transmit Power) increases by 1
when the rank of the uplink transmit power in the MR is lower than or equal to the rank of the
Maximum MS Transmit Power in the system message.
The counter S327B: Number of Times (Maximum Downlink Transmit Power) increases by 1when the rank of the downlink transmit power is 0.
Trigger Point
The BSC measures the MS Power Rank and the BTS Power Rank based on the transmit
power ranks of the MS and the BTS after receiving the valid MRs from the MS.
Formula
None.
13.4.4 Analyzed Power Rank During Power Control per Cell
Counter
Table 13-12 lists the counters of Analyzed Power Rank During Power Control per Cell.
Table 13-12 Counters of Analyzed Power Rank During Power Control per Cell
Number Counter
1 AS3240: Mean Power Rank of MS
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Number Counter
2 AS3241: Mean Power Rank of BTS
Meaning
The counters measure the mean transmit power of the MS and the BTS.
Trigger Point
None.
Formula
Mean Power Rank of MS = [MS Power Rank]/[Number of Power Control Messages]
Mean Power Rank of BTS = [BTS Power Rank]/[ Number of Power Control Messages]
13.4.5 Sampled Level of Power Control Signals per Cell
Counter
Table 13-13 lists the counters of Sampled Level of Power Control Signals per Cell.
Table 13-13 Counters of Sampled Level of Power Control Signals per Cell
Number Counter
1 S325B: Strength of Downlink Signals
2 S325A: Strength of Uplink Signals
Meaning
The counters measure the uplink and downlink receive level.
Trigger PointThe BSC measures the counters based on the uplink and downlink receive level after
receiving the valid MRs from the MS.
Formula
None.
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13.4.6 Analyzed Level of Power Control Signals per Cell
Counter
Table 13-14 lists the counters of Analyzed Level of Power Control Signals per Cell.
Table 13-14 Counters of Analyzed Level of Power Control Signals per Cell
Number Counter
1 AS325B: Mean Strength of Downlink Signals
2 AS325A: Mean Strength of Uplink Signals
MeaningThe counters measure the mean uplink and downlink receive level.
Trigger Point
None.
Formula
Mean Strength of Downlink Signals = [Strength of Downlink Signals]/[ Number of Power
Control Messages]
Mean Strength of Uplink Signals = [Strength of Uplink Signals]/[ Number of Power ControlMessages]
13.4.7 Sampling Quality of Power Control Signals per Cell
Counter
Table 13-15 lists the counters of Quality of Power Control Signals per Cell.
Table 13-15 Counters of Quality of Power Control Signals per Cell
Number Counter
1 S326B: Quality of Downlink Signals
2 S326A: Quality of Uplink Signals
Meaning
The counters measure the quality of the uplink and downlink received signals. The receive
quality has eight ranks, and lower rank suggests better quality.
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Trigger Point
The BSC measures the counters based on the quality ranks of the uplink and downlink
received signals after receiving valid MRs from the MS.
Formula
None.
13.4.8 Analyzed Quality of Power Control Signals per Cell
Counter
Table 13-16 lists the counters of Analyzed Quality of Power Control Signals per Cell.
Table 13-16 Counters of Analyzed Quality of Power Control Signals per Cell
Number Counter
1 AS326B: Mean Quality of Downlink Signals
2 AS326A: Mean Quality of Uplink Signals
Meaning
The counters measure the mean receive quality of the uplink and downlink signals. The
receive quality has eight ranks, and lower rank suggests better quality.
Trigger Point
None.
Formula
Mean Quality of Downlink Signals = [Quality of Downlink Signals]/[Number of Power
Control Messages]
Mean Quality of Uplink Signals = [Quality of Uplink Signals]/[Number of Power Control
Messages]
13.4.9 Sampled Duration of Maximum Power per Cell
Counter
Table 13-17 lists the counters of Sampled Duration of Maximum Power per Cell.
Table 13-17 Counters of Sampled Duration of Maximum Power per Cell
Number Counter
1 TS327B: Duration of Maximum Downlink Power
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Number Counter
2 TS327A: Duration of Maximum Uplink Power
Meaning
This counter measures the duration of the maximum uplink and downlink power.
Trigger Point
If the downlink transmit power rank is 0, the counter TS427B: Duration of Maximum
Downlink Power increases by 0.48 s.
If the uplink transmit power rank is lower than or equal to the Maximum Transmit Power
Control Level in the system information, the counter TS427A: Duration of Maximum Uplink
Power increases by 0.48 s.
Formula
None.
13.4.10 Analyzed Duration of Maximum Power per Cell
Counter
Table 13-18 lists the counters of Analyzed Duration of Maximum Power per Cell.
Table 13-18 Counters of Analyzed Duration of Maximum Power per Cell
Number Counter
1 RS327B: Ratio of Maximum Downlink Power Duration (%)
2 RS327A: Ratio of Maximum Uplink Power Duration (%)
Meaning
RS327B: Ratio of Maximum Downlink Power Duration (%) measures the ratio of theDuration of Maximum Downlink Power to the Number of Power Control Messages. Greatvalue of this counter suggests bad coverage or improper settings of power control parameters.
RS327A: Ratio of Maximum Uplink Power Duration (%) measures the ratio of the Duration
of Maximum Uplink Power to the Number of Power Control Messages. Great value of thiscounter suggests low rank of the uplink receive level or improper settings of power control
parameters.
Trigger Point
None.
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Formula
Ratio of Maximum Downlink Power Duration (%) = {100}*[ Duration of Maximum
Downlink Power]/([Number of Power Control Messages]*{48}/{100})
Ratio of Maximum Uplink Power Duration (%)= {100}*[ Duration of Maximum UplinkPower]/([Number of Power Control Messages]*{48}/{100})
13.4.11 Distance Between MS and BTS per Cell
Counter
S3280: Distance Between MS and BTS
Meaning
The distance between the MS and the BTS is measured in TA (one TA equals to 550 m.) The
value of TA increases with the distance.
This counter measures the distance between the MS and the BTS.
Trigger Point
The counter increases by 1 when the BSC receives a valid MR that contains the TA.
Formula
None.
13.4.12 Maximum Distance Between MS and BTS per Cell
Counter
S3281: Maximum Distance Between MS and BTS
Meaning
The distance between the MS and the BTS is measured in TA (one TA equals to 550 m.) The
value of TA increases with the distance.
This counter measures the maximum distance between the MS and the BTS.
Trigger Point
This counter is measured when the BSC records the maximum distance (in TA) in a valid MR
that the MS reports in a GP.
Formula
None.
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13.4.13 Number of Power Control Messages per Cell
Counter
S329: Number of Power Control Messages
Meaning
This counter measures the total number of cell power control messages.
Trigger Point
This counter is measured when the BSC receives a valid MR that contains a power control
message.
Formula None.
13.4.14 Mean Distance Between MS and BTS
Counter
AS3280: Mean Distance Between MS and BTS.
Meaning
This counter measures the mean distance between the MS and the BTS.
Trigger Point
None.
Formula
Mean Distance Between MS and BTS = [Distance Between MS and BTS]/[Number of Power
Control Messages]
13.5 Neighbor Cell Level Measurement per Cell
13.5.1 Overview of Neighbor Cell Level Measurement per Cell
Neighbor Cell Level Measurement per Cell refers to the measurement of mean receive levelof neighbor cells. This measurement unit helps to determine whether to configure neighborcells.
Table 13-19 lists the counters of Neighbor Cell Level Measurement per Cell.
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Table 13-19 Counters of Neighbor Cell Level Measurement per Cell
Number Counter
1 S360: Strength of Signals in Neighbor Cells
2 S361: Number of MRs of Neighbor Cells
3 AS360: Mean Strength of Signals in Neighbor Cells
13.5.2 Strength of Signals in Neighbor Cells
Counter
S360: Strength of Signals in Neighbor Cells.
Meaning
This counter measures the strength of signals in neighbor cells.
Trigger Point
This counter is measured when the BSC receives a valid MR and accumulates the receive
level of all the neighbor cells.
This counter's measurement object can be configured. If the measurement object is not configured, this
counter is not measured.
Formula
None.
13.5.3 Number of MRs of Neighbor Cells
Counter
S361: Number of MRs of Neighbor Cells.
Meaning
This counter measures the number of MRs in neighbor cells.
Trigger Point
This counter is measured based on the neighboring cells when the BSC receives a valid MR
from the MS.
This counter's measurement object can be configured. If the measurement object is not configured, this
counter is not measured.
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Formula
None.
13.5.4 Mean Strength of Signals in Neighbor CellsCounter
AS360: Mean Strength of Signals in Neighbor Cells.
Meaning
This counter measures the mean strength of signals in neighbor cells in a GP.
Trigger Point
None.
Formula
Mean Strength of Signals in Neighbor Cells= [Strength of Signals in Neighbor Cells]/[ MRs
of Neighbor Cells]
13.6 TCHF Receive Level Measurement per TRX
CounterThe valid MRs that the BSC receives contain the ranks of the uplink and downlink receive
level and the ranks of the uplink and downlink receive quality.
The receive level has eight ranks, and higher rank suggests greater receive level, as shown inTable 13-20.
Table 13-20 Rank of the receive level
Rank of Receive Level Receive Level(dBm)
0 <–100
1 (-100,85]
2 (-85,-80]
3 (-80,-75]
4 (-75,-70]
5 (-70,-65]
6 (-65,-60]
7 >-60
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The receive quality has eight ranks, and higher rank suggests worse receive quality, as shownin Table 13-21.
Table 13-21 Rank of the receive quality based on the bit error rate
Rank of Receive Quality Bit Error Rate
0 < 0.2%
1 0.2%–0.4%
2 0.4%–0.8%
3 0.8%–1.6%
4 1.6%–3.2%
5 3.2%–6.4%
6 6.4%–12.8%
7 > 12.8%
TCHF Receive Level Measurement per TRX refers to the measurement of the sampled
receive level ranks and receive quality ranks in the MRs on the TCHF.
Table 13-22 lists the counters of TCHF Receive Level Measurement per TRX.
Table 13-22 Counters of TCHF Receive Level Measurement per TRX
Number Counter
1 S4100A: Number of MRs on Uplink TCHF (Receive Level Rank 0 andReceive Quality Rank 0)
2 S4101A: Number of MRs on Uplink TCHF (Receive Level Rank 0 andReceive Quality Rank 1)
3 S4102A: Number of MRs on Uplink TCHF (Receive Level Rank 0 andReceive Quality Rank 2)
4 S4103A: Number of MRs on Uplink TCHF (Receive Level Rank 0 andReceive Quality Rank 3)
5 S4104A: Number of MRs on Uplink TCHF (Receive Level Rank 0 andReceive Quality Rank 4)
6 S4105A: Number of MRs on Uplink TCHF (Receive Level Rank 0 andReceive Quality Rank 5)
7 S4106A: Number of MRs on Uplink TCHF (Receive Level Rank 0 andReceive Quality Rank 6)
8 S4107A: Number of MRs on Uplink TCHF (Receive Level Rank 0 and
Receive Quality Rank 7)
9 S4110A: Number of MRs on Uplink TCHF (Receive Level Rank 1 and
Receive Quality Rank 0)
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Number Counter
10 S4111A: Number of MRs on Uplink TCHF (Receive Level Rank 1 and
Receive Quality Rank 1)
11 S4112A: Number of MRs on Uplink TCHF (Receive Level Rank 1 andReceive Quality Rank 2)
12 S4113A: Number of MRs on Uplink TCHF (Receive Level Rank 1 andReceive Quality Rank 3)
13 S4114A: Number of MRs on Uplink TCHF (Receive Level Rank 1 and
Receive Quality Rank 4)
14 S4115A: Number of MRs on Uplink TCHF (Receive Level Rank 1 andReceive Quality Rank 5)
15 S4116A: Number of MRs on Uplink TCHF (Receive Level Rank 1 and
Receive Quality Rank 6)
16 S4117A: Number of MRs on Uplink TCHF (Receive Level Rank 1 andReceive Quality Rank 7)
17 S4120A: Number of MRs on Uplink TCHF (Receive Level Rank 1 and
Receive Quality Rank 8)
18 S4121A: Number of MRs on Uplink TCHF (Receive Level Rank 2 andReceive Quality Rank 1)
19 S4122A: Number of MRs on Uplink TCHF (Receive Level Rank 2 andReceive Quality Rank 2)
20 S4123A: Number of MRs on Uplink TCHF (Receive Level Rank 2 andReceive Quality Rank 3)
21 S4124A: Number of MRs on Uplink TCHF (Receive Level Rank 2 andReceive Quality Rank 4)
22 S4125A: Number of MRs on Uplink TCHF (Receive Level Rank 2 andReceive Quality Rank 5)
23 S4126A: Number of MRs on Uplink TCHF (Receive Level Rank 2 andReceive Quality Rank 6)
24 S4127A: Number of MRs on Uplink TCHF (Receive Level Rank 2 and
Receive Quality Rank 7)
25 S4130A: Number of MRs on Uplink TCHF (Receive Level Rank 3 andReceive Quality Rank 0)
26 S4131A: Number of MRs on Uplink TCHF (Receive Level Rank 3 andReceive Quality Rank 1)
27 S4132A: Number of MRs on Uplink TCHF (Receive Level Rank 3 andReceive Quality Rank 2)
28 S4133A: Number of MRs on Uplink TCHF (Receive Level Rank 3 and
Receive Quality Rank 3)
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Number Counter
29 S4134A: Number of MRs on Uplink TCHF (Receive Level Rank 3 and
Receive Quality Rank 4)
30 S4135A: Number of MRs on Uplink TCHF (Receive Level Rank 3 andReceive Quality Rank 5)
31 S4136A: Number of MRs on Uplink TCHF (Receive Level Rank 3 andReceive Quality Rank 6)
32 S4137A: Number of MRs on Uplink TCHF (Receive Level Rank 3 and
Receive Quality Rank 7)
33 S4140A: Number of MRs on Uplink TCHF (Receive Level Rank 4 andReceive Quality Rank 0)
34 S4141A: Number of MRs on Uplink TCHF (Receive Level Rank 4 and
Receive Quality Rank 1)
35 S4142A: Number of MRs on Uplink TCHF (Receive Level Rank 4 andReceive Quality Rank 2)
36 S4143A: Number of MRs on Uplink TCHF (Receive Level Rank 4 and
Receive Quality Rank 3)
37 S4144A: Number of MRs on Uplink TCHF (Receive Level Rank 4 andReceive Quality Rank 4)
38 S4145A: Number of MRs on Uplink TCHF (Receive Level Rank 4 andReceive Quality Rank 5)
39 S4146A: Number of MRs on Uplink TCHF (Receive Level Rank 4 andReceive Quality Rank 6)
40 S4147A: Number of MRs on Uplink TCHF (Receive Level Rank 4 andReceive Quality Rank 7)
41 S4150A: Number of MRs on Uplink TCHF (Receive Level Rank 5 andReceive Quality Rank 0)
42 S4151A: Number of MRs on Uplink TCHF (Receive Level Rank 5 andReceive Quality Rank 1)
43 S4152A: Number of MRs on Uplink TCHF (Receive Level Rank 5 and
Receive Quality Rank 2)
44 S4153A: Number of MRs on Uplink TCHF (Receive Level Rank 5 andReceive Quality Rank 3)
45 S4154A: Number of MRs on Uplink TCHF (Receive Level Rank 5 andReceive Quality Rank 4)
46 S4155A: Number of MRs on Uplink TCHF (Receive Level Rank 5 andReceive Quality Rank 5)
47 S4156A: Number of MRs on Uplink TCHF (Receive Level Rank 5 and
Receive Quality Rank 6)
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13 MR Measurement
HUAWEI BSC6000 Base Station Controller
Performance Counter Reference
13-24 Huawei Technologies Proprietary Issue 03 (2007-05-09)
Number Counter
48 S4157A: Number of MRs on Uplink TCHF (Receive Level Rank 5 and
Receive Quality Rank 7)
49 S4160A: Number of MRs on Uplink TCHF (Receive Level Rank 6 andReceive Quality Rank 0)
50 S4161A: Number of MRs on Uplink TCHF (Receive Level Rank 6 andReceive Quality Rank 1)
51 S4162A: Number of MRs on Uplink TCHF (Receive Level Rank 6 and
Receive Quality Rank 2)
52 S4163A: Number of MRs on Uplink TCHF (Receive Level Rank 6 andReceive Quality Rank 3)
53 S4164A: Number of MRs on Uplink TCHF (Receive Level Rank 6 and
Receive Quality Rank 4)
54 S4165A: Number of MRs on Uplink TCHF (Receive Level Rank 6 andReceive Quality Rank 5)
55 S4166A: Number of MRs on Uplink TCHF (Receive Level Rank 6 and
Receive Quality Rank 6)
56 S4167A: Number of MRs on Uplink TCHF (Receive Level Rank 6 andReceive Quality Rank 7)
57 S4170A: Number of MRs on Uplink TCHF (Receive Level Rank 7 andReceive Quality Rank 0)
58 S4171A: Number of MRs on Uplink TCHF (Receive Level Rank 7 andReceive Quality Rank 1)
59 S4172A: Number of MRs on Uplink TCHF (Receive Level Rank 7 andReceive Quality Rank 2)
60 S4173A: Number of MRs on Uplink TCHF (Receive Level Rank 7 andReceive Quality Rank 3)
61 S4174A: Number of MRs on Uplink TCHF (Receive Level Rank 7 andReceive Quality Rank 4)
62 S4175A: Number of MRs on Uplink TCHF (Receive Level Rank 7 and
Receive Quality Rank 5)
63 S4176A: Number of MRs on Uplink TCHF (Receive Level Rank 7 andReceive Quality Rank 6)
64 S4177A: Number of MRs on Uplink TCHF (Receive Level Rank 7 andReceive Quality Rank 7)
65 S4100B: Number of MRs on Downlink TCHF (Receive Level Rank 0 andReceive Quality Rank 0)
66 S4101B: Number of MRs on Downlink TCHF (Receive Level Rank 0 and
Receive Quality Rank 1)
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference 13 MR Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 13-25
Number Counter
67 S4102B: Number of MRs on Downlink TCHF (Receive Level Rank 0 and
Receive Quality Rank 2)
68 S4103B: Number of MRs on Downlink TCHF (Receive Level Rank 0 andReceive Quality Rank 3)
69 S4104B: Number of MRs on Downlink TCHF (Receive Level Rank 0 andReceive Quality Rank 4)
70 S4105B: Number of MRs on Downlink TCHF (Receive Level Rank 0 and
Receive Quality Rank 5)
71 S4106B: Number of MRs on Downlink TCHF (Receive Level Rank 0 andReceive Quality Rank 6)
72 S4107B: Number of MRs on Downlink TCHF (Receive Level Rank 0 and
Receive Quality Rank 7)
73 S4110B: Number of MRs on Downlink TCHF (Receive Level Rank 1 andReceive Quality Rank 0)
74 S4111B: Number of MRs on Downlink TCHF (Receive Level Rank 1 and
Receive Quality Rank 1)
75 S4112B: Number of MRs on Downlink TCHF (Receive Level Rank 1 andReceive Quality Rank 2)
76 S4113B: Number of MRs on Downlink TCHF (Receive Level Rank 1 andReceive Quality Rank 3)
77 S4114B: Number of MRs on Downlink TCHF (Receive Level Rank 1 andReceive Quality Rank 4)
78 S4115B: Number of MRs on Downlink TCHF (Receive Level Rank 1 andReceive Quality Rank 5)
79 S4116B: Number of MRs on Downlink TCHF (Receive Level Rank 1 andReceive Quality Rank 6)
80 S4117B: Number of MRs on Downlink TCHF (Receive Level Rank 1 andReceive Quality Rank 7)
81 S4120B: Number of MRs on Downlink TCHF (Receive Level Rank 2 and
Receive Quality Rank 0)
82 S4121B: Number of MRs on Downlink TCHF (Receive Level Rank 1 andReceive Quality Rank 1)
83 S4122B: Number of MRs on Downlink TCHF (Receive Level Rank 1 andReceive Quality Rank 2)
84 S4123B: Number of MRs on Downlink TCHF (Receive Level Rank 1 andReceive Quality Rank 3)
85 S4124B: Number of MRs on Downlink TCHF (Receive Level Rank 1 and
Receive Quality Rank 4)
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13 MR Measurement
HUAWEI BSC6000 Base Station Controller
Performance Counter Reference
13-26 Huawei Technologies Proprietary Issue 03 (2007-05-09)
Number Counter
86 S4125B: Number of MRs on Downlink TCHF (Receive Level Rank 1 and
Receive Quality Rank 5)
87 S4126B: Number of MRs on Downlink TCHF (Receive Level Rank 1 andReceive Quality Rank 6)
88 S4127B: Number of MRs on Downlink TCHF (Receive Level Rank 1 andReceive Quality Rank 7)
89 S4130B: Number of MRs on Downlink TCHF (Receive Level Rank 3 and
Receive Quality Rank 0)
90 S4131B: Number of MRs on Downlink TCHF (Receive Level Rank 3 andReceive Quality Rank 1)
91 S4132B: Number of MRs on Downlink TCHF (Receive Level Rank 3 and
Receive Quality Rank 2)
92 S4133B: Number of MRs on Downlink TCHF (Receive Level Rank 3 andReceive Quality Rank 3)
93 S4134B: Number of MRs on Downlink TCHF (Receive Level Rank 3 and
Receive Quality Rank 4)
94 S4135B: Number of MRs on Downlink TCHF (Receive Level Rank 3 andReceive Quality Rank 5)
95 S4136B: Number of MRs on Downlink TCHF (Receive Level Rank 3 andReceive Quality Rank 6)
96 S4137B: Number of MRs on Downlink TCHF (Receive Level Rank 3 andReceive Quality Rank 7)
97 S4140B: Number of MRs on Downlink TCHF (Receive Level Rank 4 andReceive Quality Rank 0)
98 S4141B: Number of MRs on Downlink TCHF (Receive Level Rank 4 andReceive Quality Rank 1)
99 S4142B: Number of MRs on Downlink TCHF (Receive Level Rank 4 andReceive Quality Rank 2)
100 S4143B: Number of MRs on Downlink TCHF (Receive Level Rank 4 and
Receive Quality Rank 3)
101 S4144B: Number of MRs on Downlink TCHF (Receive Level Rank 4 andReceive Quality Rank 4)
102 S4145B: Number of MRs on Downlink TCHF (Receive Level Rank 4 andReceive Quality Rank 5)
103 S4146B: Number of MRs on Downlink TCHF (Receive Level Rank 4 andReceive Quality Rank 6)
104 S4147B: Number of MRs on Downlink TCHF (Receive Level Rank 4 and
Receive Quality Rank 7)
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference 13 MR Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 13-27
Number Counter
105 S4150B: Number of MRs on Downlink TCHF (Receive Level Rank 5 and
Receive Quality Rank 0)
106 S4151B: Number of MRs on Downlink TCHF (Receive Level Rank 5 andReceive Quality Rank 1)
107 S4152B: Number of MRs on Downlink TCHF (Receive Level Rank 5 andReceive Quality Rank 2)
108 S4153B: Number of MRs on Downlink TCHF (Receive Level Rank 5 and
Receive Quality Rank 3)
109 S4154B: Number of MRs on Downlink TCHF (Receive Level Rank 5 andReceive Quality Rank 4)
110 S4155B: Number of MRs on Downlink TCHF (Receive Level Rank 5 and
Receive Quality Rank 5)
111 S4156B: Number of MRs on Downlink TCHF (Receive Level Rank 5 andReceive Quality Rank 6)
112 S4157B: Number of MRs on Downlink TCHF (Receive Level Rank 5 and
Receive Quality Rank 7)
113 S4160B: Number of MRs on Downlink TCHF (Receive Level Rank 6 andReceive Quality Rank 0)
114 S4161B: Number of MRs on Downlink TCHF (Receive Level Rank 6 andReceive Quality Rank 1)
115 S4162B: Number of MRs on Downlink TCHF (Receive Level Rank 6 andReceive Quality Rank 2)
116 S4163B: Number of MRs on Downlink TCHF (Receive Level Rank 6 andReceive Quality Rank 3)
117 S4164B: Number of MRs on Downlink TCHF (Receive Level Rank 6 andReceive Quality Rank 4)
118 S4165B: Number of MRs on Downlink TCHF (Receive Level Rank 6 andReceive Quality Rank 5)
119 S4166B: Number of MRs on Downlink TCHF (Receive Level Rank 6 and
Receive Quality Rank 6)
120 S4167B: Number of MRs on Downlink TCHF (Receive Level Rank 6 andReceive Quality Rank 7)
121 S4170B: Number of MRs on Downlink TCHF (Receive Level Rank 7 andReceive Quality Rank 0)
122 S4171B: Number of MRs on Downlink TCHF (Receive Level Rank 7 andReceive Quality Rank 1)
123 S4172B: Number of MRs on Downlink TCHF (Receive Level Rank 7 and
Receive Quality Rank 2)
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13 MR Measurement
HUAWEI BSC6000 Base Station Controller
Performance Counter Reference
13-28 Huawei Technologies Proprietary Issue 03 (2007-05-09)
Number Counter
124 S4173B: Number of MRs on Downlink TCHF (Receive Level Rank 7 and
Receive Quality Rank 3)
125 S4174B: Number of MRs on Downlink TCHF (Receive Level Rank 7 andReceive Quality Rank 4)
126 S4175B: Number of MRs on Downlink TCHF (Receive Level Rank 7 andReceive Quality Rank 5)
127 S4176B: Number of MRs on Downlink TCHF (Receive Level Rank 7 and
Receive Quality Rank 6)
128 S4177B: Number of MRs on Downlink TCHF (Receive Level Rank 7 andReceive Quality Rank 7)
Meaning
The BSC measures these counters based on the following factors after receiving a valid MR
or a valid preprocessing MR:
TCHF uplink receive level rank (0–7)
TCHF uplink receive quality rank (0–7)
TCHF downlink receive level rank (0–7)
TCHF downlink receive quality rank (0–7)
Trigger PointThe BSC measures these counters based on the uplink or downlink receive level and the
uplink or downlink receive quality after receiving a valid MR from the MS.
The BSC measures these counters based on the uplink or downlink receive level and the
uplink or downlink receive quality after receiving a valid preprocessing MR from the BTS.
Formula
None.
13.7 TCHH Receive Level Measurement per TRX
Counter
TCHH Receive Level Measurement per TRX refers to the measurement of the sampledreceive level ranks and receive quality ranks in the MRs on the TCHH.
Table 13-23 lists the counters of TCHH Receive Level Measurement per TRX.
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference 13 MR Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 13-29
Table 13-23 Counters of TCHH Receive Level Measurement per TRX
Number Counter
1 S4100C: Number of MRs on Uplink TCHH (Receive Level Rank 0 and
Receive Quality Rank 0)
2 S4101C: Number of MRs on Uplink TCHH (Receive Level Rank 0 andReceive Quality Rank 1)
3 S4102C: Number of MRs on Uplink TCHH (Receive Level Rank 0 andReceive Quality Rank 2)
4 S4103C: Number of MRs on Uplink TCHH (Receive Level Rank 0 andReceive Quality Rank 3)
5 S4104C: Number of MRs on Uplink TCHH (Receive Level Rank 0 andReceive Quality Rank 4)
6 S4105C: Number of MRs on Uplink TCHH (Receive Level Rank 0 andReceive Quality Rank 5)
7 S4106C: Number of MRs on Uplink TCHH (Receive Level Rank 0 andReceive Quality Rank 6)
8 S4107C: Number of MRs on Uplink TCHH (Receive Level Rank 0 andReceive Quality Rank 7)
9 S4110C: Number of MRs on Uplink TCHH (Receive Level Rank 1 andReceive Quality Rank 0)
10 S4111C: Number of MRs on Uplink TCHH (Receive Level Rank 1 and
Receive Quality Rank 1)
11 S4112C: Number of MRs on Uplink TCHH (Receive Level Rank 1 andReceive Quality Rank 2)
12 S4113C: Number of MRs on Uplink TCHH (Receive Level Rank 1 andReceive Quality Rank 3)
13 S4114C: Number of MRs on Uplink TCHH (Receive Level Rank 1 andReceive Quality Rank 4)
14 S4115C: Number of MRs on Uplink TCHH (Receive Level Rank 1 andReceive Quality Rank 5)
15 S4116C: Number of MRs on Uplink TCHH (Receive Level Rank 1 andReceive Quality Rank 6)
16 S4117C: Number of MRs on Uplink TCHH (Receive Level Rank 1 and
Receive Quality Rank 7)
17 S4120C: Number of MRs on Uplink TCHH (Receive Level Rank 2 andReceive Quality Rank 0)
18 S4121C: Number of MRs on Uplink TCHH (Receive Level Rank 2 andReceive Quality Rank 1)
19 S4122C: Number of MRs on Uplink TCHH (Receive Level Rank 2 and
Receive Quality Rank 2)
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13 MR Measurement
HUAWEI BSC6000 Base Station Controller
Performance Counter Reference
13-30 Huawei Technologies Proprietary Issue 03 (2007-05-09)
Number Counter
20 S4123C: Number of MRs on Uplink TCHH (Receive Level Rank 2 and
Receive Quality Rank 3)
21 S4124C: Number of MRs on Uplink TCHH (Receive Level Rank 2 andReceive Quality Rank 4)
22 S4125C: Number of MRs on Uplink TCHH (Receive Level Rank 2 andReceive Quality Rank 5)
23 S4126C: Number of MRs on Uplink TCHH (Receive Level Rank 2 and
Receive Quality Rank 6)
24 S4127C: Number of MRs on Uplink TCHH (Receive Level Rank 2 andReceive Quality Rank 7)
25 S4130C: Number of MRs on Uplink TCHH (Receive Level Rank 3 and
Receive Quality Rank 0)
26 S4131C: Number of MRs on Uplink TCHH (Receive Level Rank 3 andReceive Quality Rank 1)
27 S4132C: Number of MRs on Uplink TCHH (Receive Level Rank 3 and
Receive Quality Rank 2)
28 S4133C: Number of MRs on Uplink TCHH (Receive Level Rank 3 andReceive Quality Rank 3)
29 S4134C: Number of MRs on Uplink TCHH (Receive Level Rank 3 andReceive Quality Rank 4)
30 S4135C: Number of MRs on Uplink TCHH (Receive Level Rank 3 andReceive Quality Rank 5)
31 S4136C: Number of MRs on Uplink TCHH (Receive Level Rank 3 andReceive Quality Rank 6)
32 S4137C: Number of MRs on Uplink TCHH (Receive Level Rank 3 andReceive Quality Rank 7)
33 S4140C: Number of MRs on Uplink TCHH (Receive Level Rank 4 andReceive Quality Rank 0)
34 S4141C: Number of MRs on Uplink TCHH (Receive Level Rank 4 and
Receive Quality Rank 1)
35 S4142C: Number of MRs on Uplink TCHH (Receive Level Rank 4 andReceive Quality Rank 2)
36 S4143C: Number of MRs on Uplink TCHH (Receive Level Rank 4 andReceive Quality Rank 3)
37 S4144C: Number of MRs on Uplink TCHH (Receive Level Rank 4 andReceive Quality Rank 4)
38 S4145C: Number of MRs on Uplink TCHH (Receive Level Rank 4 and
Receive Quality Rank 5)
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference 13 MR Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 13-31
Number Counter
39 S4146C: Number of MRs on Uplink TCHH (Receive Level Rank 4 and
Receive Quality Rank 6)
40 S4147C: Number of MRs on Uplink TCHH (Receive Level Rank 4 andReceive Quality Rank 7)
41 S4150C: Number of MRs on Uplink TCHH (Receive Level Rank 5 andReceive Quality Rank 0)
42 S4151C: Number of MRs on Uplink TCHH (Receive Level Rank 5 and
Receive Quality Rank 1)
43 S4152C: Number of MRs on Uplink TCHH (Receive Level Rank 5 andReceive Quality Rank 2)
44 S4153C: Number of MRs on Uplink TCHH (Receive Level Rank 5 and
Receive Quality Rank 3)
45 S4154C: Number of MRs on Uplink TCHH (Receive Level Rank 5 andReceive Quality Rank 4)
46 S4155C: Number of MRs on Uplink TCHH (Receive Level Rank 5 and
Receive Quality Rank 5)
47 S4156C: Number of MRs on Uplink TCHH (Receive Level Rank 5 andReceive Quality Rank 6)
48 S4157C: Number of MRs on Uplink TCHH (Receive Level Rank 5 andReceive Quality Rank 7)
49 S4160C: Number of MRs on Uplink TCHH (Receive Level Rank 6 andReceive Quality Rank 0)
50 S4161C: Number of MRs on Uplink TCHH (Receive Level Rank 6 andReceive Quality Rank 1)
51 S4162C: Number of MRs on Uplink TCHH (Receive Level Rank 6 andReceive Quality Rank 2)
52 S4163C: Number of MRs on Uplink TCHH (Receive Level Rank 6 andReceive Quality Rank 3)
53 S4164C: Number of MRs on Uplink TCHH (Receive Level Rank 6 and
Receive Quality Rank 4)
54 S4165C: Number of MRs on Uplink TCHH (Receive Level Rank 6 andReceive Quality Rank 5)
55 S4166C: Number of MRs on Uplink TCHH (Receive Level Rank 6 andReceive Quality Rank 6)
56 S4167C: Number of MRs on Uplink TCHH (Receive Level Rank 6 andReceive Quality Rank 7)
57 S4170C: Number of MRs on Uplink TCHH (Receive Level Rank 7 and
Receive Quality Rank 0)
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13 MR Measurement
HUAWEI BSC6000 Base Station Controller
Performance Counter Reference
13-32 Huawei Technologies Proprietary Issue 03 (2007-05-09)
Number Counter
58 S4171C: Number of MRs on Uplink TCHH (Receive Level Rank 7 and
Receive Quality Rank 1)
59 S4172C: Number of MRs on Uplink TCHH (Receive Level Rank 7 andReceive Quality Rank 2)
60 S4173C: Number of MRs on Uplink TCHH (Receive Level Rank 7 andReceive Quality Rank 3)
61 S4174C: Number of MRs on Uplink TCHH (Receive Level Rank 7 and
Receive Quality Rank 4)
62 S4175C: Number of MRs on Uplink TCHH (Receive Level Rank 7 andReceive Quality Rank 5)
63 S4176C: Number of MRs on Uplink TCHH (Receive Level Rank 7 and
Receive Quality Rank 6)
64 S4177C: Number of MRs on Uplink TCHH (Receive Level Rank 7 andReceive Quality Rank 7)
65 S4100D: Number of MRs on Downlink TCHH (Receive Level Rank 0 and
Receive Quality Rank 0)
66 S4101D: Number of MRs on Downlink TCHH (Receive Level Rank 0 andReceive Quality Rank 1)
67 S4102D: Number of MRs on Downlink TCHH (Receive Level Rank 0 andReceive Quality Rank 2)
68 S4103D: Number of MRs on Downlink TCHH (Receive Level Rank 0 andReceive Quality Rank 3)
69 S4104D: Number of MRs on Downlink TCHH (Receive Level Rank 0 andReceive Quality Rank 4)
70 S4105D: Number of MRs on Downlink TCHH (Receive Level Rank 0 andReceive Quality Rank 5)
71 S4106D: Number of MRs on Downlink TCHH (Receive Level Rank 0 andReceive Quality Rank 6)
72 S4107D: Number of MRs on Downlink TCHH (Receive Level Rank 0 and
Receive Quality Rank 7)
73 S4110D: Number of MRs on Downlink TCHH (Receive Level Rank 1 andReceive Quality Rank 0)
74 S4111D: Number of MRs on Downlink TCHH (Receive Level Rank 1 andReceive Quality Rank 1)
75 S4112D: Number of MRs on Downlink TCHH (Receive Level Rank 1 andReceive Quality Rank 2)
76 S4113D: Number of MRs on Downlink TCHH (Receive Level Rank 1 and
Receive Quality Rank 3)
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference 13 MR Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 13-33
Number Counter
77 S4114D: Number of MRs on Downlink TCHH (Receive Level Rank 1 and
Receive Quality Rank 4)
78 S4115D: Number of MRs on Downlink TCHH (Receive Level Rank 1 andReceive Quality Rank 5)
79 S4116D: Number of MRs on Downlink TCHH (Receive Level Rank 1 andReceive Quality Rank 6)
80 S4117D: Number of MRs on Downlink TCHH (Receive Level Rank 1 and
Receive Quality Rank 7)
81 S4120D: Number of MRs on Downlink TCHH (Receive Level Rank 2 andReceive Quality Rank 0)
82 S4121D: Number of MRs on Downlink TCHH (Receive Level Rank 2 and
Receive Quality Rank 1)
83 S4122D: Number of MRs on Downlink TCHH (Receive Level Rank 2 andReceive Quality Rank 2)
84 S4123D: Number of MRs on Downlink TCHH (Receive Level Rank 2 and
Receive Quality Rank 3)
85 S4124D: Number of MRs on Downlink TCHH (Receive Level Rank 2 andReceive Quality Rank 4)
86 S4125D: Number of MRs on Downlink TCHH (Receive Level Rank 2 andReceive Quality Rank 5)
87 S4126D: Number of MRs on Downlink TCHH (Receive Level Rank 2 andReceive Quality Rank 6)
88 S4127D: Number of MRs on Downlink TCHH (Receive Level Rank 2 andReceive Quality Rank 7)
89 S4130D: Number of MRs on Downlink TCHH (Receive Level Rank 3 andReceive Quality Rank 0)
90 S4131D: Number of MRs on Downlink TCHH (Receive Level Rank 3 andReceive Quality Rank 1)
91 S4132D: Number of MRs on Downlink TCHH (Receive Level Rank 3 and
Receive Quality Rank 2)
92 S4133D: Number of MRs on Downlink TCHH (Receive Level Rank 3 andReceive Quality Rank 3)
93 S4134D: Number of MRs on Downlink TCHH (Receive Level Rank 3 andReceive Quality Rank 4)
94 S4135D: Number of MRs on Downlink TCHH (Receive Level Rank 3 andReceive Quality Rank 5)
95 S4136D: Number of MRs on Downlink TCHH (Receive Level Rank 3 and
Receive Quality Rank 6)
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13 MR Measurement
HUAWEI BSC6000 Base Station Controller
Performance Counter Reference
13-34 Huawei Technologies Proprietary Issue 03 (2007-05-09)
Number Counter
96 S4137D: Number of MRs on Downlink TCHH (Receive Level Rank 3 and
Receive Quality Rank 7)
97 S4140D: Number of MRs on Downlink TCHH (Receive Level Rank 4 andReceive Quality Rank 0)
98 S4141D: Number of MRs on Downlink TCHH (Receive Level Rank 4 andReceive Quality Rank 1)
99 S4142D: Number of MRs on Downlink TCHH (Receive Level Rank 4 and
Receive Quality Rank 2)
100 S4143D: Number of MRs on Downlink TCHH (Receive Level Rank 4 andReceive Quality Rank 3)
101 S4144D: Number of MRs on Downlink TCHH (Receive Level Rank 4 and
Receive Quality Rank 4)
102 S4145D: Number of MRs on Downlink TCHH (Receive Level Rank 4 andReceive Quality Rank 5)
103 S4146D: Number of MRs on Downlink TCHH (Receive Level Rank 4 and
Receive Quality Rank 6)
104 S4147D: Number of MRs on Downlink TCHH (Receive Level Rank 4 andReceive Quality Rank 7)
105 S4150D: Number of MRs on Downlink TCHH (Receive Level Rank 5 andReceive Quality Rank 0)
106 S4151D: Number of MRs on Downlink TCHH (Receive Level Rank 5 andReceive Quality Rank 1)
107 S4152D: Number of MRs on Downlink TCHH (Receive Level Rank 5 andReceive Quality Rank 2)
108 S4153D: Number of MRs on Downlink TCHH (Receive Level Rank 5 andReceive Quality Rank 3)
109 S4154D: Number of MRs on Downlink TCHH (Receive Level Rank 5 andReceive Quality Rank 4)
110 S4155D: Number of MRs on Downlink TCHH (Receive Level Rank 5 and
Receive Quality Rank 5)
111 S4156D: Number of MRs on Downlink TCHH (Receive Level Rank 5 andReceive Quality Rank 6)
112 S4157D: Number of MRs on Downlink TCHH (Receive Level Rank 5 andReceive Quality Rank 7)
113 S4160D: Number of MRs on Downlink TCHH (Receive Level Rank 6 andReceive Quality Rank 0)
114 S4161D: Number of MRs on Downlink TCHH (Receive Level Rank 6 and
Receive Quality Rank 1)
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HUAWEI BSC6000 Base Station Controller
Performance Counter Reference 13 MR Measurement
Issue 03 (2007-05-09) Huawei Technologies Proprietary 13-35
Number Counter
115 S4162D: Number of MRs on Downlink TCHH (Receive Level Rank 6 and
Receive Quality Rank 2)
116 S4163D: Number of MRs on Downlink TCHH (Receive Level Rank 6 andReceive Quality Rank 3)
117 S4164D: Number of MRs on Downlink TCHH (Receive Level Rank 6 andReceive Quality Rank 4)
118 S4165D: Number of MRs on Downlink TCHH (Receive Level Rank 6 and
Receive Quality Rank 5)
119 S4166D: Number of MRs on Downlink TCHH (Receive Level Rank 6 andReceive Quality Rank 6)
120 S4167D: Number of MRs on Downlink TCHH (Receive Level Rank 6 and
Receive Quality Rank 7)
121 S4170D: Number of MRs on Downlink TCHH (Receive Level Rank 7 andReceive Quality Rank 0)
122 S4171D: Number of MRs on Downlink TCHH (Receive Level Rank 7 and
Receive Quality Rank 1)
123 S4172D: Number of MRs on Downlink TCHH (Receive Level Rank 7 andReceive Quality Rank 2)
124 S4173D: Number of MRs on Downlink TCHH (Receive Level Rank 7 andReceive Quality Rank 3)
125 S4174D: Number of MRs on Downlink TCHH (Receive Level Rank 7 andReceive Quality Rank 4)
126 S4175D: Number of MRs on Downlink TCHH (Receive Level Rank 7 andReceive Quality Rank 5)
127 S4176D: Number of MRs on Downlink TCHH (Receive Level Rank 7 andReceive Quality Rank 6)
128 S4177D: Number of MRs on Downlink TCHH (Receive Level Rank 7 andReceive Quality Rank 7)
Meaning
The BSC measures these counters based on the following factors after receiving a valid MRor a valid preprocessing MR:
TCHH uplink receive level rank (0–7)
TCHH uplink receive quality rank (0–7)
TCHH downlink receive level rank (0–7)
TCHH downlink receive quality rank (0–7)
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Trigger Point
The BSC measures these counters based on the uplink or downlink receive level and the
uplink or downlink receive quality after receiving a valid MR or a valid preprocessing MR.
Formula
None.
13.8 Receive Quality Measurement per TRX
Counter
Receive Quality Measurement per TRX refers to the measurement of the mean receive level
rank and the mean receive quality rank on the TCH.Table 13-24 lists the counters of Receive Quality Measurement per TRX.
Table 13-24 Counters of Receive Quality Measurement per TRX
Number Counter
1 CS410A: Number of MRs on Uplink TCHF (Mean Receive Quality Rank 0)
2 CS411A: Number of MRs on Uplink TCHF (Mean Receive Quality Rank 1)
3 CS412A: Number of MRs on Uplink TCHF (Mean Receive Quality Rank 2)
4 CS413A: Number of MRs on Uplink TCHF (Mean Receive Quality Rank 3)
5 CS414A: Number of MRs on Uplink TCHF (Mean Receive Quality Rank 4)
6 CS415A: Number of MRs on Uplink TCHF (Mean Receive Quality Rank 5)
7 CS416A: Number of MRs on Uplink TCHF (Mean Receive Quality Rank 6)
8 CS417A: Number of MRs on Uplink TCHF (Mean Receive Quality Rank 7)
9 CS410B: Number of MRs on Downlink TCHF (Mean Receive Quality Rank
0)
10 CS411B: Number of MRs on Downlink TCHF (Mean Receive Quality Rank
1)
11 CS412B: Number of MRs on Downlink TCHF (Mean Receive Quality Rank2)
12 CS413B: Number of MRs on Downlink TCHF (Mean Receive Quality Rank3)
13 CS414B: Number of MRs on Downlink TCHF (Mean Receive Quality Rank4)
14 CS415B: Number of MRs on Downlink TCHF (Mean Receive Quality Rank5)
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Number Counter
15 CS416B: Number of MRs on Downlink TCHF (Mean Receive Quality Rank
6)
16 CS417B: Number of MRs on Downlink TCHF (Mean Receive Quality Rank7)
17 CS410C: Number of MRs on Uplink TCHH (Mean Rank of Receive Quality0)
18 CS411C: Number of MRs on Uplink TCHH (Mean Receive Quality Rank 1)
19 CS412C: Number of MRs on Uplink TCHH (Mean Receive Quality Rank 2)
20 CS413C: Number of MRs on Uplink TCHH (Mean Receive Quality Rank 3)
21 CS414C: Number of MRs on Uplink TCHH (Mean Receive Quality Rank 4)
22 CS415C: Number of MRs on Uplink TCHH (Mean Receive Quality Rank 5)
23 CS416C: Number of MRs on Uplink TCHH (Mean Receive Quality Rank 6)
24 CS417C: Number of MRs on Uplink TCHH (Mean Receive Quality Rank 7)
25 CS410D: Number of MRs on Downlink TCHH (Mean Receive Quality Rank0)
26 CS411D: Number of MRs on Downlink TCHH (Mean Receive Quality Rank1)
27 CS412D: Number of MRs on Downlink TCHH (Mean Receive Quality Rank
2)
28 CS413D: Number of MRs on Downlink TCHH (Mean Receive Quality Rank3)
29 CS414D: Number of MRs on Downlink TCHH (Mean Receive Quality Rank4)
30 CS415D: Number of MRs on Downlink TCHH (Mean Receive Quality Rank5)
31 CS416D: Number of MRs on Downlink TCHH (Mean Receive Quality Rank6)
32 CS417D: Number of MRs on Downlink TCHH (Mean Receive Quality Rank7)
Meaning
The counters measure the number of MRs on the uplink and downlink TCHH when the mean
receive quality rank is from 0 to 7.
Trigger Point
None.
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Formula
In the formulas of this section, the value range of N is 0–7.
Number of MRs on Uplink TCHF (Mean Receive Quality Rank N) =
Number of MRs on Uplink TCHF (Receive Level Rank 0 and Receive Quality Rank N+
Number of MRs on Uplink TCHF (Receive Level Rank 1 and Receive Quality Rank N +
Number of MRs on Uplink TCHF (Receive Level Rank 2 and Receive Quality Rank N +
Number of MRs on Uplink TCHF (Receive Level Rank 3 and Receive Quality Rank N +
Number of MRs on Uplink TCHF (Receive Level Rank 4 and Receive Quality Rank N +
Number of MRs on Uplink TCHF (Receive Level Rank 5 and Receive Quality Rank N +
Number of MRs on Uplink TCHF (Receive Level Rank 6 and Receive Quality Rank N +
Number of MRs on Uplink TCHF (Receive Level Rank 7 and Receive Quality Rank N
Number of MRs on Downlink TCHF (Mean Receive Quality Rank N) =
Number of MRs on Downlink TCHF (Receive Level Rank 0 and Receive Quality Rank N+
Number of MRs on Downlink TCHF (Receive Level Rank 1 and Receive Quality Rank N +
Number of MRs on Downlink TCHF (Receive Level Rank 2 and Receive Quality Rank N +
Number of MRs on Downlink TCHF (Receive Level Rank 3 and Receive Quality Rank N +
Number of MRs on Downlink TCHF (Receive Level Rank 4 and Receive Quality Rank N +
Number of MRs on Downlink TCHF (Receive Level Rank 5 and Receive Quality Rank N +
Number of MRs on Downlink TCHF (Receive Level Rank 6 and Receive Quality Rank N +
Number of MRs on Downlink TCHF (Receive Level Rank 7 and Receive Quality Rank N
Number of MRs on Uplink TCHH (Mean Rank of Receive Quality N)=
Number of MRs on Uplink TCHH (Receive Level Rank 0 and Receive Quality Rank N+
Number of MRs on Uplink TCHH (Receive Level Rank 1 and Receive Quality Rank N + Number of MRs on Uplink TCHH (Receive Level Rank 2 and Receive Quality Rank N +
Number of MRs on Uplink TCHH (Receive Level Rank 3 and Receive Quality Rank N +
Number of MRs on Uplink TCHH (Receive Level Rank 4 and Receive Quality Rank N +
Number of MRs on Uplink TCHH (Receive Level Rank 5 and Receive Quality Rank N +
Number of MRs on Uplink TCHH (Receive Level Rank 6 and Receive Quality Rank N +
Number of MRs on Uplink TCHH (Receive Level Rank 7 and Receive Quality Rank N
Number of MRs on Downlink TCHH (Mean Receive Quality Rank N =
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Number of MRs on Downlink TCHH (Receive Level Rank 0 and Receive Quality Rank N+
Number of MRs on Downlink TCHH (Receive Level Rank 1 and Receive Quality Rank N +
Number of MRs on Downlink TCHH (Receive Level Rank 2 and Receive Quality Rank N +
Number of MRs on Downlink TCHH (Receive Level Rank 3 and Receive Quality Rank N +
Number of MRs on Downlink TCHH (Receive Level Rank 4 and Receive Quality Rank N +
Number of MRs on Downlink TCHH (Receive Level Rank 5 and Receive Quality Rank N +
Number of MRs on Downlink TCHH (Receive Level Rank 6 and Receive Quality Rank N +
Number of MRs on Downlink TCHH (Receive Level Rank 7 and Receive Quality Rank N
13.9 Uplink-and-Downlink Balance Measurement per TRX
Counter
Proper power estimation during network planning is a prerequisite for normal operation of the
system. The uplink and downlink signals in the coverage area must be balanced.
If the uplink coverage is larger than the downlink coverage, the signals at the edge of thecell are weak and easily "submerged" by the stronger signals from other cells.
If the downlink coverage is larger than the uplink coverage, the MS is forced to station atthe signals. The unlink signals are so weak that the voice quality is affected.
The balance is not absolute. You can judge whether the uplink and downlink signals are in
balance or not according to the MRs on the Abis interface.
The MR that the BSC receives contains the uplink receive level and the downlink receive
level.
The uplink and downlink balance level is determined by the following formula:
Downlink receive level – uplink receive level – 6
For details, see Table 13-25.
Table 13-25 Mapping between the uplink/downlink balance rank and the receive level
Uplink-and-Downlink Balance
Rank
Downlink Receive Level – Uplink Receive
level – 6
1 –15 dB
2 –14 dB, –13 dB, –12 dB, –11 dB, –10 dB
3 –9 dB, –8 dB, –7 dB, –6 dB
4 –5 dB, –4 dB, –3 dB
5 –2 dB, –1dB, 0 dB
6 0 dB
7 1 dB, 2 dB
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Uplink-and-Downlink BalanceRank
Downlink Receive Level – Uplink Receivelevel – 6
8 3 dB, 4 dB, 5 dB
9 6 dB, 7 dB, 8 dB, 9 dB
10 10 dB, 11 dB, 12 dB, 13 dB, 14 dB
11 15 dB, 16 dB, 17 dB, 18 dB, 19 dB, 20 dB
If the measurement result shows that the uplink/downlink is frequently in balance level 1,infer that the downlink loss is too large or the downlink transmit power is too weak.
If the measurement result shows that the uplink/downlink is frequently in balance level 11,infer that the uplink loss is too large or the uplink transmit power is too weak. You can use the
results to locate faults in transferring channels such as the TRX and the antenna system.
Table 13-26 lists the counters of Uplink-and-Downlink Balance Measurement per TRX.
Table 13-26 Counters of Uplink-and-Downlink Balance Measurement per TRX
Number Counter
1 S462A: Number of MRs (Uplink-and-Downlink Balance Level = 1)
2 S462B: Number of MRs (Uplink-and-Downlink Balance Level = 2)
3 S462C: Number of MRs (Uplink-and-Downlink Balance Level = 3)
4 S462D: Number of MRs (Uplink-and-Downlink Balance Level = 4)
5 S462E: Number of MRs (Uplink-and-Downlink Balance Level = 5)
6 S462F: Number of MRs (Uplink-and-Downlink Balance Level = 6)
7 S462G: Number of MRs (Uplink-and-Downlink Balance Level = 7)
8 S462H: Number of MRs (Uplink-and-Downlink Balance Level = 8)
9 S462I: Number of MRs (Uplink-and-Downlink Balance Level = 9)
10 S462J: Number of MRs (Uplink-and-Downlink Balance Level = 10)
11 S462K: Number of MRs (Uplink-and-Downlink Balance Level = 11)
Meaning
The BSC gets the uplink-and-downlink balance level from the valid MRs sent by the MS and
the valid preprocessing MRs sent by the BTS according to Table 13-25. Then the BSC
measures the number of MRs when the uplink-and-downlink balance level is from 1 to 11.
Trigger Point
The counters are measured when:
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The BSC receives valid MRs from the MS and gets the uplink-and-downlink level (1–11)from the MS according to Table 13-25.
The BSC receives valid preprocessing MRs from the BTS and gets the uplink-and-downlink level (1–11) from the MS according to Table 13-25.
Formula
None.
13.10 Number of MRs Based on TA per TRX
Counter
Number of MRs Based on TA per TRX refers to the measurement of the number of MRs that
the MS reports in a certain range of TA. The measurement suggests the traffic volume indifferent distances between the MS and the BTS and helps with network maintenance andoptimization.
Table 13-27 lists the counters of Number of MRs based on TA per TRX.
Table 13-27 Counters of Number of MRs based on TA per TRX
Number Counter
1 S4400A: Number of MRs (TA = 0)
2 S4401A: Number of MRs (TA = 1)
3 S4402A: Number of MRs (TA = 2)
4 S4403A: Number of MRs (TA = 3)
5 S4404A: Number of MRs (TA = 4)
6 S4405A: Number of MRs (TA = 5)
7 S4406A: Number of MRs (TA = 6)
8 S4407A: Number of MRs (TA = 7)
9 S4408A: Number of MRs (TA = 8)
10 S4409A: Number of MRs (TA = 9)
11 S4410A: Number of MRs (TA = 10)
12 S4411A: Number of MRs (TA = 11)
13 S4412A: Number of MRs (TA = 12)
14 S4413A: Number of MRs (TA = 13)
15 S4414A: Number of MRs (TA = 14)
16 S4415A: Number of MRs (TA = 15)
17 S4416A: Number of MRs (TA = 16)
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Number Counter
18 S4417A: Number of MRs (TA = 17)
19 S4418A: Number of MRs (TA = 18)
20 S4419A: Number of MRs (TA = 19)
21 S4420A: Number of MRs (TA = 20)
22 S4421A: Number of MRs (TA = 21)
23 S4422A: Number of MRs (TA = 22)
24 S4423A: Number of MRs (TA = 23)
25 S4424A: Number of MRs (TA = 24)
26 S4425A: Number of MRs (TA = 25)
27 S4426A: Number of MRs (TA = 26)
28 S4427A: Number of MRs (TA = 27)
29 S4428A: Number of MRs (TA = 28)
30 S4429A: Number of MRs (TA = 29)
31 S4430A: Number of MRs (TA = 30 or 31)
32 S4432A: Number of MRs (TA = 32 or 33)
33 S4434A: Number of MRs (TA = 34 or 35)
34 S4436A: Number of MRs (TA = 36 or 37)
35 S4438A: Number of MRs (TA = 38 or 39)
36 S4440A: Number of MRs (TA = 40 to 44)
37 S4445A: Number of MRs (TA = 45 to 49)
38 S4450A: Number of MRs (TA = 50 to 54)
39 S4455A: Number of MRs (TA = 55 to 63)
40 S4463A: Number of MRs (TA greater than 63)
Meaning
The counters measure the number of MRs when TA is from 0 to 219.
Trigger Point
The BSC measures the number of valid MRs and preprocessing MRs from the MS based onthe TA.
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Formula
None.
13.11 Radio Link Failure Measurement per TRX
13.11.1 Overview of Radio Link Failure Measurement per TRX
Radio Link Failure Measurement per TRX refers to the measurement of level, quality, and TA
in the MR during call drops.
Table 13-28 lists the counters of Radio Link Failure Measurement per TRX.
Table 13-28 Counters of Radio Link Failure Measurement per TRX
Counter Section
Uplink and Downlink Level During Radio Link Failure per TRX 13.11.2
Mean Uplink and Downlink Level During Radio Link Failure per TRX 13.11.3
Uplink and Downlink Quality During Radio Link Failure per TRX 13.11.4
Mean Uplink and Downlink Quality During Radio Link Failure per TRX 13.11.5
TA During Radio Link Failure per TRX 13.11.6
Mean TA During Radio Link Failure TRX 13.11.7
Number of Radio Link Failures per TRX 13.11.8
13.11.2 Uplink and Downlink Level During Radio Link Failureper TRX
Counter
Table 13-29 lists the counters of Uplink and Downlink Level During Radio Link Failure per
TRX.
Table 13-29 Counters of Uplink and Downlink Level During Radio Link Failure per TRX
Number Counter
1 S3300D: Uplink Level During Radio Link Failure (SDCCH)
2 S3320D: Downlink Level During Radio Link Failure (SDCCH)
3 S3307D: Uplink Level During Radio Link Failure (TCHF)
4 S3327D: Downlink Level During Radio Link Failure (TCHF)
5 S3308D: Uplink Level During Radio Link Failure (TCHH)
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Number Counter
6 S3328D: Downlink Level During Radio Link Failure (TCHH)
Meaning
The counters measure the uplink and downlink level on the SDCCHs, TCHFs, and TCHHsduring radio link failure.
Trigger Point
The counters are measured by adding the uplink and downlink level in the last valid MRs onthe SDCCH, TCHF, and TCHH before radio link failure.
Formula None.
13.11.3 Mean Uplink and Downlink Level During Radio LinkFailure per TRX
Counter
Table 13-30 lists the counters of Mean Uplink and Downlink Level During Radio Link
Failure per TRX.
Table 13-30 Counters of Mean Uplink and Downlink Level During Radio Link Failure per TRX
Number Counter
1 AS4300D: Mean Uplink Level During Radio Link Failure (SDCCH)
2 AS4320D: Mean Downlink Level During Radio Link Failure (SDCCH)
3 AS4307D: Mean Uplink Level During Radio Link Failure (TCHF)
4 AS4327D: Mean Downlink Level During Radio Link Failure (TCHF)
5 AS4308D: Mean Uplink Level During Radio Link Failure (TCHH)
6 AS4328D: Mean Downlink Level During Radio Link Failure (TCHH)
Meaning
This counter measures the mean uplink and downlink level on the SDCCH, TCHF, and TCHHduring radio link failure.
Trigger Point
None.
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Formula
Mean Uplink Level During Radio Link Failure (SDCCH) = [Uplink Level During Radio Link
Failure (SDCCH)]/[Radio Link Failures (SDCCH)]
Mean Downlink Level During Radio Link Failure (SDCCH) = [Downlink Level DuringRadio Link Failure (SDCCH)]/[ Radio Link Failures (SDCCH)]
Mean Uplink Level During Radio Link Failure (TCHF) = [Uplink Level During Radio LinkFailure (TCHF)]/[ Radio Link Failures (TCHF)]
Mean Downlink Level During Radio Link Failure (TCHF) = [Downlink Level During Radio
Link Failure (TCHF)]/[ Radio Link Failures (TCHF)]
Mean Uplink Level During Radio Link Failure (TCHH) = [Uplink Level During Radio LinkFailure (TCHH)]/[ Radio Link Failures (TCHH)]
Mean Downlink Level During Radio Link Failure (TCHH) = [Downlink Level During RadioLink Failure (TCHH)]/[ Radio Link Failures (TCHH)]
13.11.4 Uplink and Downlink Quality During Radio Link Failureper TRX
Counter
Table 13-31 lists the counters of Uplink and Downlink Quality During Radio Link Failure per
TRX.
Table 13-31 Counters of Uplink and Downlink Quality During Radio Link Failure per TRX
Number Counter
1 S4310D: Uplink Quality During Radio Link Failure (SDCCH)
2 S4330D: Downlink Quality During Radio Link Failure (SDCCH)
3 S4317D: Uplink Quality During Radio Link Failure (TCHF)
4 S4337D: Downlink Quality During Radio Link Failure (TCHF)
5 S4318D: Uplink Quality During Radio Link Failure (TCHH)
6 S4338D: Downlink Quality During Radio Link Failure (TCHH)
Meaning
This counter measures the uplink and downlink quality on the SDCCH, TCHF, and TCHH
during radio link failure.
Trigger Point
The counters are measured by adding the uplink and downlink quality rank in the last valid
MRs on the SDCCH, TCHF, and TCHH before radio link failure.
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Formula
None.
13.11.5 Mean Uplink and Downlink Quality During Radio LinkFailure per TRX
Counter
Table 13-32 lists the counters of Mean Uplink and Downlink Quality During Radio LinkFailure per TRX.
Table 13-32 Counters of Mean Quality of Uplink and Downlink During Radio Link Failure perTRX
Number Counter
1 AS4310D: Mean Uplink Quality During Radio Link Failure (SDCCH)
2 AS4330D: Mean Downlink Quality During Radio Link Failure (SDCCH)
3 AS4317D: Mean Uplink Quality During Radio Link Failure (TCHF)
4 AS4337D: Mean Downlink Quality During Radio Link Failure (SDCCH andTCHF)
5 AS4318D: Mean Uplink Quality During Radio Link Failure (TCHH)
6 AS4338D: Mean Downlink Quality During Radio Link Failure (SDCCH andTCHH)
Meaning
This counter measures the mean quality of uplink and downlink on the SDCCH, TCHF, andTCHH during radio link failure.
Trigger Point
None.
Formula
Mean Uplink Quality During Radio Link Failure (SDCCH) = [Uplink Quality During Radio
Link Failure (SDCCH)]/[Number of Radio Link Failures (SDCCH)]
Mean Downlink Quality During Radio Link Failure (SDCCH) = [Downlink Quality During
Radio Link Failure (SDCCH)]/[Number of Radio Link Failures (SDCCH)]
Mean Uplink Quality During Radio Link Failure (TCHF) = [Uplink Quality During RadioLink Failure (TCHF)]/[Number of Radio Link Failures (TCHF)]
Mean Downlink Quality During Radio Link Failure (TCHF) = [Downlink Quality During
Radio Link Failure (TCHF)]/[Number of Radio Link Failures (TCHF)]
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Mean Uplink Quality During Radio Link Failure (TCHH) = [Uplink Quality During RadioLink Failure (TCHH)]/[ Number of Radio Link Failures (TCHH)]
Mean Downlink Quality During Radio Link Failure (TCHH) = [Downlink Quality During
Radio Link Failure (TCHH)]/[ Number of Radio Link Failures (TCHH)]
13.11.6 TA During Radio Link Failure per TRX
Counter
Table 13-33 lists the counters of TA During Radio Link Failure per TRX.
Table 13-33 Counters of TA During Radio Link Failure per TRX
Number Counter
1 S4340D: TA During Radio Link Failure (SDCCH)
2 S4347D: TA During Radio Link Failure (TCHF)
3 S4348D: TA During Radio Link Failure (TCHH)
Meaning
The counters measure the TA on the SDCCH, TCHF, and TCHH during radio link failure.
Trigger Point
The counters are measured by adding the TA in the last valid MRs on the SDCCH, TCHF, and
TCHH before radio link failure.
Formula
None.
13.11.7 Mean TA During Radio Link Failure per TRX
Counter
Table 13-34 lists the counters of Mean TA During Radio Link Failure per TRX.
Table 13-34 Counters of Mean TA During Radio Link Failure per TRX
Number Counter
1 AS4340D: Mean TA During Radio Link Failure (SDCCH)
2 AS4347D: Mean TA During Radio Link Failure (TCHF)
3 AS4348D: Mean TA During Radio Link Failure (TCHH)
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Meaning
The counters measure the mean TA on the SDCCH, TCHF, and TCHH during radio link
failure.
Trigger Point
None.
Formula
Mean TA During Radio Link Failure (SDCCH) = [TA During Radio Link Failure
(SDCCH)]/[ Radio Link Failures (SDCCH)]
Mean TA During Radio Link Failure (TCHF) = [TA During Radio Link Failure(TCHF)]/[ Radio Link Failures (TCHF)]
Mean TA During Radio Link Failure (TCHH)= [TA During Radio Link Failure(TCHH)]/[ Radio Link Failures (TCHH)]
13.11.8 Sampled Radio Link Failures per TRX
Counter
Table 13-35 lists the counters of Sampled Radio Link Failures per TRX.
Table 13-35 Counters of Sampled Radio Link Failures per TRX
Number Counter
1 S4350D: Radio Link Failures (SDCCH)
2 S4357D: Radio Link Failures (TCHF)
3 S4358D: Radio Link Failures (TCHH)
Meaning
The counters measure the total number of radio link failures on the SDCCH, TCHF, and
TCHH in a GP.
Trigger Point
The counters are measured when radio link failure occurs on the SDCCH, TCHF, and TCHH.
Formula
None.
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13.12 Radio Link Failure Measurement based on TA perTRX
Counter
Radio Link Failure Measurement based on TA per TRX refers to the measurement of radio
link failures based on TA. The measurement helps with network maintenance andoptimization.
Table 13-36 lists the counters of Radio Link Failure Measurement based on TA per TRX.
Table 13-36 Counters of Radio Link Failure Measurement based on TA per TRX
Number Counter
1 S4400B: Radio Link Failures (TA = 0)
2 S4401B: Radio Link Failures (TA = 1)
3 S4402B: Radio Link Failures (TA = 2)
4 S4403B: Radio Link Failures (TA = 3)
5 S4404B: Radio Link Failures (TA = 4)
6 S4405B: Radio Link Failures (TA = 5)
7 S4406B: Radio Link Failures (TA = 6)
8 S4407B: Radio Link Failures (TA = 7)
9 S4408B: Radio Link Failures (TA = 8)
10 S4409B: Radio Link Failures (TA = 9)
11 S4410B: Radio Link Failures (TA = 10)
12 S4411B: Radio Link Failures (TA = 11)
13 S4412B: Radio Link Failures (TA = 12)
14 S4413B: Radio Link Failures (TA = 13)
15 S4414B: Radio Link Failures (TA = 14)
16 S4415B: Radio Link Failures (TA = 15)
17 S4416B: Radio Link Failures (TA = 16)
18 S4417B: Radio Link Failures (TA = 17)
19 S4418B: Radio Link Failures (TA = 18)
20 S4419B: Radio Link Failures (TA = 19)
21 S4420B: Radio Link Failures (TA = 20)
22 S4421B: Radio Link Failures (TA = 21)
23 S4422B: Radio Link Failures (TA = 22)
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Number Counter
24 S4423B: Radio Link Failures (TA = 23)
25 S4424B: Radio Link Failures (TA = 24)
26 S4425B: Radio Link Failures (TA = 25)
27 S4426B: Radio Link Failures (TA = 26)
28 S4427B: Radio Link Failures (TA = 27)
29 S4428B: Radio Link Failures (TA = 28)
30 S4429B: Radio Link Failures (TA = 29)
31 S4430B: Radio Link Failures (TA = 30 or 31)
32 S4432B: Radio Link Failures (TA = 32 or 33)
33 S4434B: Radio Link Failures (TA = 34 or 35)
34 S4436B: Radio Link Failures (TA = 36 or 37)
35 S4438B: Radio Link Failures (TA = 38 or 39)
36 S4440B: Radio Link Failures (TA = 40 to 44)
37 S4445B: Radio Link Failures (TA = 45 to 49)
38 S4450B: Radio Link Failures (TA = 50 to 54)
39 S4455B: Radio Link Failures (TA = 55 to 63)
40 S4463B: Radio Link Failures (TA greater than 63)
Meaning
The counters measure the number of MRs based on the TA during radio link failure.
Trigger Point
In a GP, the counters are measured based on the TA in the last valid MR during radio link
failure.
Formula
None.
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13.13 RQI Measurement based on TA per TRX
13.13.1 Overview of RQI Measurement based on TA per TRX
Radio Quality Indication (RQI) is the reference for intra cell handovers. The BSC can performintra cell handover of AMR calls only when the MR contains the RQI.
RQI Measurement based on TA per TRX refers to the measurement of the RQI based on TA.The measurement helps with network maintenance and optimization.
Table 13-37 lists the counters of RQI Measurement based on TA per TRX.
Table 13-37 Counters of RQI Measurement based on TA per TRX
Counter Section
Sampled RQI based on TA per TRX 13.13.2
Analyzed RQI based on TA per TRX 13.13.3
13.13.2 Sampled RQI based on TA per TRX
Counter
Table 13-38 lists the counters of Sampled RQI based on TA per TRX.
Table 13-38 Counters of Sampled RQI based on TA per TRX
Number Counter
1 S4400D: RQI (TA = 0)
2 S4401D: RQI (TA = 1)
3 S4402D: RQI (TA = 2)
4 S4403D: RQI (TA = 3)
5 S4404D: RQI (TA = 4)
6 S4405D: RQI (TA = 5)
7 S4406D: RQI (TA = 6)
8 S4407D: RQI (TA = 7)
9 S4408D: RQI (TA = 8)
10 S4409D: RQI (TA = 9)
11 S4410D: RQI (TA = 10)
12 S4411D: RQI (TA = 11)
13 S4412D: RQI (TA = 12)
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Number Counter
14 S4413D: RQI (TA = 13)
15 S4414D: RQI (TA = 14)
16 S4415D: RQI (TA = 15)
17 S4416D: RQI (TA = 16)
18 S4417D: RQI (TA = 17)
19 S4418D: RQI (TA = 18)
20 S4419D: RQI (TA = 19)
21 S4420D: RQI (TA = 20)
22 S4421D: RQI (TA = 21)
23 S4422D: RQI (TA = 22)
24 S4423D: RQI (TA = 23)
25 S4424D: RQI (TA = 24)
26 S4425D: RQI (TA = 25)
27 S4426D: RQI (TA = 26)
28 S4427D: RQI (TA = 27)
29 S4428D: RQI (TA = 28)
30 S4429D: RQI (TA = 29)
31 S4430D: RQI (TA = 30 or 31)
32 S4432D: RQI (TA = 32 or 33)
33 S4434D: RQI (TA = 34 or 35)
34 S4436D: RQI (TA = 36 or 37)
35 S4438D: RQI (TA = 38 or 39)
36 S4440D: RQI (TA = 40 to 44)
37 S4445D: RQI (TA = 45 to 49)
38 S4450D: RQI (TA = 50 to 54)
39 S4455D: RQI (TA = 55 to 63)
40 S4463D: RQI (TA greater than 63)
41 S4400C: MRs with RQI (TA = 0)
42 S4401C: MRs with RQI (TA = 1)
43 S4402C: MRs with RQI (TA = 2)
44 S4403C: MRs with RQI (TA = 3)
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Number Counter
45 S4404C: MRs with RQI (TA = 4)
46 S4405C: MRs with RQI (TA = 5)
47 S4406C: MRs with RQI (TA = 6)
48 S4407C: MRs with RQI (TA = 7)
49 S4408C: MRs with RQI (TA = 8)
50 S4409C: MRs with RQI (TA = 9)
51 S4410C: MRs with RQI (TA = 10)
52 S4411C: MRs with RQI (TA = 11)
53 S4412C: MRs with RQI (TA = 12)
54 S4413C: MRs with RQI (TA = 13)
55 S4414C: MRs with RQI (TA = 14)
56 S4415C: MRs with RQI (TA = 15)
57 S4416C: MRs with RQI (TA = 16)
58 S4417C: MRs with RQI (TA = 17)
59 S4418C: MRs with RQI (TA = 18)
60 S4419C: MRs with RQI (TA = 19)
61 S4420C: MRs with RQI (TA = 20)
62 S4421C: MRs with RQI (TA = 21)
63 S4422C: MRs with RQI (TA = 22)
64 S4423C: MRs with RQI (TA = 23)
65 S4424C: MRs with RQI (TA = 24)
66 S4425C: MRs with RQI (TA = 25)
67 S4426C: MRs with RQI (TA = 26)
68 S4427C: MRs with RQI (TA = 27)
69 S4428C: MRs with RQI (TA = 28)
70 S4429C: MRs with RQI (TA = 29)
71 S4430C: MRs with RQI (TA = 30 or 31)
72 S4432C: MRs with RQI (TA = 32 or 33)
73 S4434C: MRs with RQI (TA = 34 or 35)
74 S4436C: MRs with RQI (TA = 36 or 37)
75 S4438C: MRs with RQI (TA = 38 or 39)
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Number Counter
76 S4440C: MRs with RQI (TA = 40 to 44)
77 S4445C: MRs with RQI (TA = 45 to 49)
78 S4450C: MRs with RQI (TA = 50 to 54)
79 S4455C: MRs with RQI (TA = 55 to 63)
80 S4463C: MRs with RQI (TA greater than 63)
Meaning
The MS reports MRs containing RQIs periodically during AMR calls. The counters measure
the RQI and the number of MRs containing RQI.
Trigger Point
The counters are measured by adding all the RQIs in the MRs when TA is x.
In a GP, each counter increases by 1 based on the TA in the MR that contains the RQI.
X is a value or a value range.
Formula
None.
13.13.3 Analyzed RQI based on TA per TRX
Counter
Table 13-39 lists the counters of Analyzed RQI based on TA per TRX.
Table 13-39 Counters of Analyzed RQI based on TA per TRX
Number Counter
1 AS4400D: Mean RQI (TA = 0)
2 AS4401D: Mean RQI (TA = 1)
3 AS4402D: Mean RQI (TA = 2)
4 AS4403D: Mean RQI (TA = 3)
5 AS4404D: Mean RQI (TA = 4)
6 AS4405D: Mean RQI (TA = 5)
7 AS4406D: Mean RQI (TA = 6)
8 AS4407D: Mean RQI (TA = 7)
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Number Counter
9 AS4408D: Mean RQI (TA = 8)
10 AS4409D: Mean RQI (TA = 9)
11 AS4410D: Mean RQI (TA = 10)
12 AS4411D: Mean RQI (TA = 11)
13 AS4412D: Mean RQI (TA = 12)
14 AS4413D: Mean RQI (TA = 13)
15 AS4414D: Mean RQI (TA = 14)
16 AS4415D: Mean RQI (TA = 15)
17 AS4416D: Mean RQI (TA = 16)
18 AS4417D: Mean RQI (TA = 17)
19 AS4418D: Mean RQI (TA = 18)
20 AS4419D: Mean RQI (TA = 19)
21 AS4420D: Mean RQI (TA = 20)
22 AS4421D: Mean RQI (TA = 21)
23 AS4422D: Mean RQI (TA = 22)
24 AS4423D: Mean RQI (TA = 23)
25 AS4424D: Mean RQI (TA = 24)
26 AS4425D: Mean RQI (TA = 25)
27 AS4426D: Mean RQI (TA = 26)
28 AS4427D: Mean RQI (TA = 27)
29 AS4428D: Mean RQI (TA = 28)
30 AS4429D: Mean RQI (TA = 29)
31 AS4430D: Mean RQI (TA = 30 or 31)
32 AS4432D: Mean RQI (TA = 32 or 33)
33 AS4434D: Mean RQI (TA = 34 or 35)
34 AS4436D: Mean RQI (TA = 36 or 37)
35 AS4438D: Mean RQI (TA = 38 or 39)
36 AS4440D: Mean RQI (TA = 40 to 44)
37 AS4445D: Mean RQI (TA = 45 to 49)
38 AS4450D: Mean RQI (TA = 50 to 54)
39 AS4455D: Mean RQI (TA = 55 to 63)
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Number Counter
40 AS4463D: Mean RQI (TA greater than 63)
Meaning
The counters measure the mean RQI in the MRs based on TA.
Trigger Point
None.
Formula
Mean RQI (TA =X) = [RQI (TA = X)]/[ MRs with RQI (TA = X)].
X is a value or a value range.
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14 Channel Measurement
About This Chapter
The following table lists the sections of this chapter.
Section Describes
14.1 Overview of Channel
Measurement
Introduces the functions and measurement units of
Channel Measurement.
14.2 Channel Configuration
Measurement per Cell
Describes the functions of the measurement unit and the
counters in this unit.
14.3 Channel ConversionMeasurement per Cell
Describes the functions of the measurement unit and thecounters in this unit.
14.4 Channel Busy DurationMeasurement per Cell
Describes the functions of the measurement unit and thecounters in this unit.
14.5 Measurement of
Maximum Busy Channels perCell
Describes the functions of the measurement unit and the
counters in this unit.
14.6 Channel State
Measurement per Cell
Describes the functions of the measurement unit and the
counters in this unit.
14.7 Channel Assignment
Request Measurement per Cell
Describes the functions of the measurement unit and the
counters in this unit.
14.8 Channel Assignment
Success Measurement perTRX
Describes the functions of the measurement unit and the
counters in this unit.
14.9 Channel Assignment
Failure Measurement per Cell
Describes the functions of the measurement unit and the
counters in this unit.
14.10 Channel AssignmentConcentric Cell Measurement per Cell
Describes the functions of the measurement unit and thecounters in this unit.
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Section Describes
14.11 Channel Assignment
Queue Measurement per Cell
Describes the functions of the measurement unit and the
counters in this unit.
14.12 Channel AssignmentGPRS Measurement per Cell
Describes the functions of the measurement unit and thecounters in this unit.
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14.1 Overview of Channel Measurement
Channel Measurement is used to measure the counters related to the channels.Table 14-1 lists the measurement units of Channel Measurement.
Table 14-1 Measurement units of Channel Measurement
Measurement Unit Section
Channel Configuration Measurement per Cell 14.2
Channel Conversion Measurement per Cell 14.3
Channel Busy Duration Measurement per Cell 14.4
Measurement of Maximum Busy Channels per Cell 14.5
Channel State Measurement per Cell 14.6
Channel Assignment Request Measurement per Cell 14.7
Channel Assignment Success Measurement per TRX 14.8
Channel Assignment Failure Measurement per Cell 14.9
Channel Assignment Concentric Cell Measurement per Cell 14.10
Channel Assignment Queue Measurement per Cell 14.11
Channel Assignment GPRS Measurement per Cell 14.12
14.2 Channel Configuration Measurement per Cell
14.2.1 Overview
During operation, the BSC dynamically adjusts the resources such as TCHs, SDCCHs, and
PDCHs for optimal use of channels. At the same time, the system periodically provides the
statistics when the channel is busy, idle, or blocked. These data helps to obtain the informationabout the system operation and about the service distribution.
Therefore, the BSC samples the information about the channel assignment every five seconds.
The number of the configured channels and the number of available channels can be obtainedduring the trigger of a sampling.
Table 14-2 lists the classification of the counters in the Channel Configuration Measurement
per Cell measurement unit.
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Table 14-2 Classification of the counters in the Channel Configuration Measurement per Cellmeasurement unit
Counter Classification Section
Sampled Measurement of Initially Configured Channels 14.2.2
Analyzed Measurement of Dynamically Configured Channels 14.2.3
Analyzed Number of Available Channels 14.2.4
SDCCH Availability 14.2.5
TCH Availability 14.2.6
Analyzed Measurement of Initially Configured Channels 14.2.7
14.2.2 Sampled Measurement of Initially Configured Channels
Counter
Table 14-3 lists the counters in the Sampled Measurement of Initially Configured Channels
measurement unit.
Table 14-3 Counters in the Sampled Measurement of Initially Configured Channels measurementunit
Number Counter
1 R3000A: Number of Initially Configured Channels (SDCCH) (900/850 Cell)
2 R3000B: Number of Initially Configured Channels (SDCCH) (1800/1900Cell)
3 R3007A: Number of Initially Configured Channels (TCHF) (900/850 Cell)
4 R3007B: Number of Initially Configured Channels (TCHF) (1800/1900 Cell)
5 R3008A: Number of Initially Configured Channels (TCHH) (900/850 Cell)
6 R3008B: Number of Initially Configured Channels (TCHH) (1800/1900 Cell)
7 R3001A: Number of Initially Configured Channels (Static PDCH) (900/850
Cell)
8 R3001B: Number of Initially Configured Channels (Static PDCH) (1800/1900Cell)
9 R3002A: Number of Initially Configured Channels (Dynamic PDCH)(900/850 Cell)
10 R3002B: Number of Initially Configured Channels (Dynamic PDCH)(1800/1900 Cell)
11 R3005A: Number of Initially Configured Channels (Static EDGE) (900/850Cell)
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Number Counter
12 R3005B: Number of Initially Configured Channels (Static EDGE) (1800/1900
Cell)
13 R3006A: Number of Initially Configured Channels (Dynamic EDGE)(900/850 Cell)
14 R3006B: Number of Initially Configured Channels (Dynamic EDGE)(1800/1900 Cell)
15 R3009A: Number of Initially Configured Channels (CBCH) (900/850 Cell)
16 R3009B: Number of Initially Configured Channels (CBCH) (1800/1900 Cell)
MeaningThe R3000A: Number of Initially Configured Channels (SDCCH) (900/850 Cell) counter is
used to measure the number of the configured SDCCHs (excluding the SDCCHs obtainedfrom the dynamic adjustment of the TCHFs) in the 900/850M cell within the BSC at each
sampling point.
The R3000B: Number of Initially Configured Channels (SDCCH) (1800/1900 Cell) counter is
used to measure the number of the configured SDCCHs (excluding the SDCCHs obtainedfrom the dynamic adjustment of the TCHFs) in the DCS1800/PCS1900M cell within the BSC
at each sampling point.
The R3007A: Number of Initially Configured Channels (TCHF) (900/850 Cell) counter isused to measure the number of the configured TCHFs (excluding the TCHFs obtained from
the dynamic adjustment of the dynamic PDCHs and from the dynamic adjustment of theTCHHs) in the 900/850M cell within the BSC at each sampling point.
The R3007B: Number of Initially Configured Channels (TCHF) (1800/1900 Cell) counter is
used to measure the number of the configured TCHFs (excluding the TCHFs obtained fromthe dynamic adjustment of the dynamic PDCHs and from the dynamic adjustment of the
TCHHs) in the DCS1800/PCS1900M cell within the BSC at each sampling point.
The R3008A: Number of Initially Configured Channels (TCHH) (900/850 Cell) counter isused to measure the number of the configured TCHHs (excluding the TCHHs obtained from
the dynamic adjustment of the TCHFs) in the 900/850M cell within the BSC at each sampling
point.
The R3008B: Number of Initially Configured Channels (TCHH) (1800/1900 Cell) counter isused to measure the number of the configured TCHHs (excluding the TCHHs obtained from
the dynamic adjustment of the TCHFs) in the DCS1800/PCS1900M cell within the BSC ateach sampling point.
The R3001A: Number of Initially Configured Channels (Static PDCH) (900/850 Cell) counter
is used to measure the number of the static PDCHs configured in the 900/850M cell withinthe BSC at each sampling point.
The R3001B: Number of Initially Configured Channels (Static PDCH) (1800/1900 Cell)
counter is used to measure the number of the static PDCHs configured in theDCS1800/PCS1900M cell within the BSC at each sampling point.
The R3002A: Number of Initially Configured Channels (Dynamic PDCH) (900/850 Cell)counter is used to measure the number of the dynamic PDCHs (including the dynamic PDCHs
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that have been dynamically adjusted to TCHFs) configured in the 900/850M cell within theBSC at each sampling point.
The R3002B: Number of Initially Configured Channels (Dynamic PDCH) (1800/1900 Cell)
counter is used to measure the number of the dynamic PDCHs (including the dynamic PDCHs
that have been dynamically adjusted to TCHFs) configured in the DCS1800/PCS1900M cellwithin the BSC at each sampling point.
The R3005A: Number of Initially Configured Channels (Static EDGE) (900/850 Cell) counteris used to measure the number of the static EDGE PDCHs configured in the 900/850M cellwithin the BSC at each sampling point.
The R3005B: Number of Initially Configured Channels (Static EDGE) (1800/1900 Cell)counter is used to measure the number of the static EDGE PDCHs configured in theDCS1800/PCS1900M cell within the BSC at each sampling point.
The R3006A: Number of Initially Configured Channels (Dynamic EDGE) (900/850 Cell)counter is used to measure the number of the dynamic EDGE PDCHs (including the dynamic
EDGE PDCHs that have been dynamically adjusted to TCHFs) configured in the 900/850Mcell within the BSC at each sampling point.
The R3006B: Number of Initially Configured Channels (Dynamic EDGE) (1800/1900 Cell)
counter is used to measure the number of the dynamic EDGE PDCHs (including the dynamicEDGE PDCHs that have been dynamically adjusted to TCHFs) configured in the
DCS1800/PCS1900M cell within the BSC at each sampling point.
The cell broadcast channel (CBCH) forwards the cell broadcast messages from the cell broadcast center (CBC) to the MS. For the areas where the cell broadcast is available, you
configure the CBCHs through the following channel portfolios in the radio channelconfiguration table: BCCH+CBCH or SDCCH+CBCH.
The R3009A: Number of Initially Configured Channels (CBCH) (900/850 Cell) counter is
used to measure the number of the configured CBCHs in the 900/850M cell within the BSC ateach sampling point.
The R3009B: Number of Initially Configured Channels (CBCH) (1800/1900 Cell) counter is
used to measure the number of the configured CBCHs in the DCS1800/PCS1900M cellwithin the BSC at each sampling point.
Trigger Point
The previous counters are measured at each sampling point.
Formula
None.
14.2.3 Analyzed Measurement of Dynamically ConfiguredChannels
Counter
Table 14-4 lists the counters in the Analyzed Measurement of Dynamically Configured
Channels measurement unit.
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Table 14-4 Counters in the Analyzed Measurement of Dynamically Configured Channelsmeasurement unit
Number Counter
1 AR3010A: Mean Number of Dynamically Configured Channels (SDCCH)(900/850 Cell)
2 AR3010B: Mean Number of Dynamically Configured Channels (SDCCH)(1800/1900 Cell)
3 AR3017A: Mean Number of Dynamically Configured Channels (TCHF)
(900/850 Cell)
4 AR3017B: Mean Number of Dynamically Configured Channels (TCHF)
(1800/1900 Cell)
5 AR3018A: Mean Number of Dynamically Configured Channels (TCHH)(900/850 Cell)
6 AR3018B: Mean Number of Dynamically Configured Channels (TCHH)(1800/1900 Cell)
7 AR3011A: Mean Number of Dynamically Configured Channels (PDCH)
(900/850 Cell)
8 AR3011B: Mean Number of Dynamically Configured Channels (PDCH)(1800/1900 Cell)
9 AR3015A: Mean Number of Dynamically Configured Channels (EDGE)(900/850 Cell)
10 AR3015B: Mean Number of Dynamically Configured Channels (EDGE)(1800/1900 Cell)
11 CR3010: Mean Number of Dynamically Configured Channels (SDCCH)
12 CR301B: Mean Number of Dynamically Configured Channels (TCH)
13 CR3017: Mean Number of Dynamically Configured Channels (TCHF)
14 CR3018: Mean Number of Dynamically Configured Channels (TCHH)
15 CR3011: Mean Number of Dynamically Configured Channels (PDCH)
16 CR3015: Mean Number of Dynamically Configured Channels (EDGE)
Meaning
The AR3010A: Mean Number of Dynamically Configured Channels (SDCCH) (900/850 Cell)
counter is used to measure the mean number of the configured SDCCHs (including theSDCCHs obtained from the dynamic adjustment of the TCHFs) in a 900/850M cell under theBSC in a granularity period.
The AR3010B: Mean Number of Dynamically Configured Channels (SDCCH) (1800/1900Cell) counter is used to measure the mean number of the configured SDCCHs (including theSDCCHs obtained from the dynamic adjustment of the TCHFs) in a DCS1800/PCS1900M
cell under the BSC in a granularity period.
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The AR3017A: Mean Number of Dynamically Configured Channels (TCHF) (900/850 Cell)counter is used to measure the mean number of the configured TCHFs (including the TCHFsobtained from the dynamic adjustment of the dynamic PDCHs and the TCHFs obtained from
the dynamic adjustment of the TCHHs) in a 900/850M cell under the BSC in a granularity period.
The AR3017B: Mean Number of Dynamically Configured Channels (TCHF) (1800/1900 Cell)
counter is used to measure the mean number of the configured TCHFs (including the TCHFsobtained from the dynamic adjustment of the dynamic PDCHs and the TCHFs obtained from
the dynamic adjustment of the TCHHs) in a DCS1800/PCS1900M cell under the BSC in agranularity period.
The AR3018A: Mean Number of Dynamically Configured Channels (TCHH) (900/850 Cell)
counter is used to measure the mean number of the configured TCHHs (including the TCHHsobtained from the dynamic adjustment of the TCHFs) in a 900/850M cell under the BSC in a
granularity period.
The AR3018B: Mean Number of Dynamically Configured Channels (TCHH) (1800/1900
Cell) counter is used to measure the mean number of the configured TCHHs (including theTCHHs obtained from the dynamic adjustment of the TCHFs) in a DCS1800/PCS1900M cellunder the BSC in a granularity period.
The AR3011A: Mean Number of Dynamically Configured Channels (PDCH) (900/850 Cell)counter is used to measure the mean number of the configured PDCHs (including the PDCHsobtained from the dynamic adjustment of the dynamic PDCHs) in a 900/850M cell under the
BSC in a granularity period.
The AR3011B: Mean Number of Dynamically Configured Channels (PDCH) (1800/1900 Cell)
counter is used to measure the mean number of the configured PDCHs (including the PDCHsobtained from the dynamic adjustment of the dynamic PDCHs) in a DCS1800/PCS1900M
cell under the BSC in a granularity period.
The AR3015A: Mean Number of Dynamically Configured Channels (EDGE) (900/850 Cell)counter is used to measure the mean number of the EDGE PDCHs (including the EDGE
PDCHs obtained from the dynamic adjustment of the dynamic EDGE PDCHs) configured ina 900/850M cell under the BSC in a granularity period.
The AR3015B: Mean Number of Dynamically Configured Channels (EDGE) (1800/1900 Cell)
counter is used to measure the mean number of the EDGE PDCHs (including the EDGEPDCHs obtained from the dynamic adjustment of the dynamic EDGE PDCHs) configured in
a DCS1800/PCS1900M cell under the BSC in a granularity period.
The CR3010: Mean Number of Dynamically Configured Channels (SDCCH) counter is usedto measure the mean number of the configured SDCCHs (including the SDCCHs obtained
from the dynamic adjustment of the TCHFs) in the cells of all frequency bands under the BSCin real time.
The CR301B: Mean Number of Dynamically Configured Channels (TCH) counter is used to
measure the mean number of the configured TCHs (including the TCHs obtained from thedynamic adjustment of the dynamic PDCHs) in the cells of all frequency bands under the
BSC in real time.
The CR3017: Mean Number of Dynamically Configured Channels (TCHF) counter is used tomeasure the mean number of the configured TCHFs (including the TCHFs obtained from the
dynamic adjustment of the dynamic PDCHs and the TCHFs obtained from the dynamicadjustment of the TCHHs) in the cells of all frequency bands under the BSC in real time.
The CR3018: Mean Number of Dynamically Configured Channels (TCHH) counter is used to
measure the mean number of the configured TCHHs (including the TCHHs obtained from the
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dynamic adjustment of the TCHFs) in the cells of all frequency bands under the BSC in realtime.
The CR3011: Mean Number of Dynamically Configured Channels (PDCH) counter is used to
measure the mean number of the configured PDCHs (including the PDCHs obtained from the
dynamic adjustment of the dynamic PDCHs) in the cells of all frequency bands under theBSC in real time.
The CR3015: Mean Number of Dynamically Configured Channels (EDGE) counter is used tomeasure the mean number of the configured EDGE PDCHs (including the EDGE PDCHsobtained from the dynamic adjustment of the dynamic EDGE PDCHs) in the cells of all
frequency bands under the BSC in real time.
Trigger Point
None.
FormulaMean Number of Dynamically Configured Channels (SDCCH) (900/850 Cell) =
[Number of Dynamically Configured Channels (SDCCH) (900/850 Cell)]/
[Sampled Number of Configured Channels]
Mean Number of Dynamically Configured Channels (SDCCH) (1800/1900 Cell) =
[Number of Dynamically Configured Channels (SDCCH) (1800/1900 Cell)]/
[Sampled Number of Configured Channels]
Mean Number of Dynamically Configured Channels (TCHF) (900/850 Cell) =
[Number of Dynamically Configured Channels (TCHF) (900/850 Cell)]/
[Sampled Number of Configured Channels]
Mean Number of Dynamically Configured Channels (TCHF) (1800/1900 Cell) =
[Number of Dynamically Configured Channels (TCHF) (1800/1900 Cell)]/
[Sampled Number of Configured Channels]
Mean Number of Dynamically Configured Channels (TCHH) (900/850 Cell) =
[Number of Dynamically Configured Channels (TCHH) (900/850 Cell)]/
[Sampled Number of Configured Channels]
Mean Number of Dynamically Configured Channels (TCHH) (1800/1900 Cell) =
[Number of Dynamically Configured Channels (TCHH) (1800/1900 Cell)]/
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[Sampled Number of Configured Channels]
Mean Number of Dynamically Configured Channels (PDCH) (900/850 Cell) =
[Number of Dynamically Configured Channels (PDCH) (900/850 Cell)]/
[Sampled Number of Configured Channels]
Mean Number of Dynamically Configured Channels (PDCH) (1800/1900 Cell) =
[Number of Dynamically Configured Channels (PDCH) (1800/1900 Cell)]/
[Sampled Number of Configured Channels]
Mean Number of Dynamically Configured Channels (EDGE) (900/850 Cell) =[Number of Dynamically Configured Channels (EDGE) (900/850 Cell)]/
[Sampled Number of Configured Channels]
Mean Number of Dynamically Configured Channels (EDGE) (1800/1900 Cell) =
[Number of Dynamically Configured Channels (EDGE) (1800/1900 Cell)]/
[Sampled Number of Configured Channels]
Mean Number of Dynamically Configured Channels (SDCCH) =
[Mean Number of Dynamically Configured Channels (SDCCH) (900/850 Cell)] +
[Mean Number of Dynamically Configured Channels (SDCCH) (1800/1900 Cell)]
Mean Number of Available Channels (TCH) =
[Mean Number of Available Channels (TCHF)] +
[Mean Number of Available Channels (TCHH)]
Mean Number of Available Channels (TCHF) =
[Mean Number of Available Channels (TCHF) (900/850 Cell)] +
[Mean Number of Available Channels (TCHF) (1800/1900 Cell)]
Mean Number of Available Channels (TCHH) =
[Mean Number of Available Channels (TCHH) (900/850 Cell)] +
[Mean Number of Available Channels (TCHH) (1800/1900 Cell)]
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Mean Number of Available Channels (PDCH) =
[Mean Number of Available Channels (PDCH) (900/850 Cell)] +
[Mean Number of Available Channels (PDCH) (1800/1900 Cell)]
Mean Number of Available Channels (EDGE) =
[Mean Number of Available Channels (EDGE) (900/850 Cell)] +
[Mean Number of Available Channels (EDGE) (1800/1900 Cell)]
Mean Number of Dynamically Configured Channels (SDCCH) (900/850 Cell) =
[Number of Dynamically Configured Channels (SDCCH) (900/850 Cell)]/
[Sampled Number of Configured Channels]
Mean Number of Dynamically Configured Channels (SDCCH) (1800/1900 Cell) =
[Number of Dynamically Configured Channels (SDCCH) (1800/1900 Cell)]/
[Sampled Number of Configured Channels]
Mean Number of Dynamically Configured Channels (TCHF) (900/850 Cell) =
[Number of Dynamically Configured Channels (TCHF) (900/850 Cell)]/
[Sampled Number of Configured Channels]
Mean Number of Dynamically Configured Channels (TCHF) (1800/1900 Cell) =
[Number of Dynamically Configured Channels (TCHF) (1800/1900 Cell)]/
[Sampled Number of Configured Channels]
Mean Number of Dynamically Configured Channels (TCHH) (900/850 Cell) =
[Number of Dynamically Configured Channels (TCHH) (900/850 Cell)]/
[Sampled Number of Configured Channels]
Mean Number of Dynamically Configured Channels (TCHH) (1800/1900 Cell) =
[Number of Dynamically Configured Channels (TCHH) (1800/1900 Cell)]/
[Sampled Number of Configured Channels]
Mean Number of Dynamically Configured Channels (PDCH) (900/850 Cell) =
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[Number of Dynamically Configured Channels (PDCH) (900/850 Cell)]/
[Sampled Number of Configured Channels]
Mean Number of Dynamically Configured Channels (PDCH) (1800/1900 Cell) =
[Number of Dynamically Configured Channels (PDCH) (1800/1900 Cell)]/
[Sampled Number of Configured Channels]
Mean Number of Dynamically Configured Channels (EDGE) (900/850 Cell) =
[Number of Dynamically Configured Channels (EDGE) (900/850 Cell)]/
[Sampled Number of Configured Channels]
Mean Number of Dynamically Configured Channels (EDGE) (1800/1900 Cell) =
[Number of Dynamically Configured Channels (EDGE) (1800/1900 Cell)]/
[Sampled Number of Configured Channels]
14.2.4 Analyzed Measurement of Available Channels
Counter
Table 14-5 lists the counters in the Analyzed Measurement of Available Channels
measurement unit.
Table 14-5 Counters in the Analyzed Measurement of Available Channels measurement unit
Number Counter
1 AR3020A: Mean Number of Available Channels (SDCCH) (900/850 Cell)
2 AR3020B: Mean Number of Available Channels (SDCCH) (1800/1900 Cell)
3 AR3027A: Mean Number of Available Channels (TCHF) (900/850 Cell)
4 AR3027B: Mean Number of Available Channels (TCHF) (1800/1900 Cell)
5 AR3028A: Mean Number of Available Channels (TCHH) (900/850 Cell)
6 AR3028B: Mean Number of Available Channels (TCHH) (1800/1900 Cell)
7 AR3021A: Mean Number of Available Channels (PDCH) (900/850 Cell)
8 AR3021B: Mean Number of Available Channels (PDCH) (1800/1900 Cell)
9 AR3025A: Mean Number of Available Channels (EDGE) (900/850 Cell)
10 AR3025B: Mean Number of Available Channels (EDGE) (1800/1900 Cell)
11 AR3023A: Mean Number of Available Channels (TCHs Converted fromDynamic PDCHs) (900/850 Cell)
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Number Counter
12 AR3023B: Mean Number of Available Channels (TCHs Converted from
Dynamic PDCHs) (1800/1900 Cell)
13 AR3024A: Mean Number of Available Channels (PDCHs Converted fromDynamic PDCHs) (900/850 Cell)
14 AR3024B: Mean Number of Available Channels (PDCHs Converted fromDynamic PDCHs) (1800/1900 Cell)
15 CR3020: Mean Number of Available Channels (SDCCH)
16 CR302B: Mean Number of Available Channels (TCH)
17 CR3027: Mean Number of Available Channels (TCHF)
18 CR3028: Mean Number of Available Channels (TCHH)
19 CR3021: Mean Number of Available Channels (PDCH)
20 CR3025: Mean Number of Available Channels (EDGE)
21 CR3023: Mean Number of Available Channels (TCHs Converted fromDynamic PDCHs)
22 CR3024: Mean Number of Available Channels (PDCHs Converted from
Dynamic PDCHs)
Meaning
The AR3020A: Mean Number of Available Channels (SDCCH) (900/850 Cell) counter is
used to measure the mean number of channels in a cell on the 900/850M band under the BSCin a granularity period. The channels must meet the following requirements:
The channel type is SDCCH8, SDCCH+CBCH, BCCH+BCCH, or BCCH+CBCH.
The channels are available.
The AR3020B: Mean Number of Available Channels (SDCCH) (1800/1900 Cell) counter isused to measure the mean number of channels in a cell on the DCS1800/PCS1900M band
under the BSC in a granularity period. The channels must meet the following requirements:
The channel type is SDCCH8, SDCCH+CBCH, BCCH+BCCH, or BCCH+CBCH.
The channels are available.
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The AR3027A: Mean Number of Available Channels (TCHF) (900/850 Cell) counter is used
to measure the mean number of available TCHFs in a 900/850M cell under the BSC in agranularity period.
The AR3027B: Mean Number of Available Channels (TCHF) (1800/1900 Cell) counter is
used to measure the mean number of available TCHFs in a DCS1800/PCS1900M cell underthe BSC in a granularity period.
The AR3028A: Mean Number of Available Channels (TCHH) (900/850 Cell) counter is usedto measure the mean number of available TCHHs in a 900/850M cell under the BSC in agranularity period.
The AR3028B: Mean Number of Available Channels (TCHH) (1800/1900 Cell) counter isused to measure the mean number of available TCHHs in a DCS1800/PCS1900M cell underthe BSC in a granularity period.
The AR3021A: Mean Number of Available Channels (PDCH) (900/850 Cell) counter is usedto measure the mean number of channels in a cell on the 900/850M band under the BSC in a
granularity period. The channels must meet the following requirements: The channel type is PDTCH, PBCCH+ PDTCH, or PCCCH+ PDTCH.
The TRX carrying the channels is EDGE-capable.
The channels are available.
The AR3021B: Mean Number of Available Channels (PDCH) (1800/1900 Cell) counter is
used to measure the mean number of channels in a cell on the DCS1800/PCS1900M bandunder the BSC in a granularity period. The channels must meet the following requirements:
The channel type is PDTCH, PBCCH+ PDTCH, or PCCCH+ PDTCH.
The TRX carrying the channels is EDGE-capable.
The channels are available.The AR3025A: Mean Number of Available Channels (EDGE) (900/850 Cell) counter is used
to measure the mean number of channels in a cell on the 900/850M band under the BSC in agranularity period. The channels must meet the following requirements:
The channel type is PDTCH, PBCCH+ PDTCH, or PCCCH+ PDTCH.
The TRX carrying the channels is EDGE-capable.
The channels are available.
The AR3025B: Mean Number of Available Channels (EDGE) (1800/1900 Cell) counter is
used to measure the mean number of channels in a cell on the DCS1800/PCS1900M band
under the BSC in a granularity period. The channels must meet the following requirements:
The channel type is PDTCH, PBCCH+ PDTCH, or PCCCH+ PDTCH.
The TRX carrying the channels is EDGE-capable.
The channels are available.
The AR3023A: Mean Number of Available Channels (TCHs Converted from DynamicPDCHs) (900/850 Cell) counter is used to measure the mean number of available TCHFs
converted from dynamic PDCHs in a 900/850M cell under the BSC in a granularity period.
The AR3023B: Mean Number of Available Channels (TCHs Converted from DynamicPDCHs) (1800/1900 Cell) counter is used to measure the mean number of available TCHFs
converted from dynamic PDCHs in a DCS1800/PCS1900M cell under the BSC in agranularity period.
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The AR3024A: Mean Number of Available Channels (PDCHs Converted from DynamicPDCHs) (900/850 Cell) counter is used to measure the mean number of channels in a cell onthe 900/850M band under the BSC in a granularity period. The channels must meet the
following requirements:
The channel type is PDTCH. The configuration type is dynamic PDCH.
The channels are available.
The AR3024B: Mean Number of Available Channels (PDCHs Converted from Dynamic
PDCHs) (1800/1900 Cell) counter is used to measure the mean number of channels in a cell
on the DCS1800/PCS1900M band under the BSC in a granularity period. The channels mustmeet the following requirements:
The channel type is PDTCH.
The configuration type is dynamic PDCH.
The channels are available.
The CR3020: Number of Available Channels (SDCCH) counter is used to measure the
number of channels in the cells on all the frequency bands under the BSC in a granularity
period in real time. The channels must meet the following requirements:
The channel type is SDCCH8, SDCCH+CBCH, BCCH+BCCH, or BCCH+CBCH.
The channels are available.
The CR3027: Number of Available Channels (TCHF) counter is used to measure the numberof the available TCHFs in the cells of all frequency bands under the BSC in real time.
The CR3028: Number of Available Channels (TCHH) counter is used to measure the number
of the available TCHHs in the cells of all frequency bands under the BSC in real time.
The CR3021: Number of Available Channels (PDCH) counter is used to measure the numberof channels in the cells on all the frequency bands under the BSC in a granularity period in
real time. The channels must meet the following requirements:
The channel type is PDTCH, PBCCH+PDTCH, or PCCCH+PDTCH.
The channels are available.
The CR3025: Number of Available Channels (EDGE) counter is used to measure the number
of channels in the cells on all frequency bands under the BSC in real time. The channels mustmeet the following requirements:
The channel type is PDTCH, PBCCH+ PDTCH, or PCCCH+ PDTCH.
The TRX carrying the channels is EDGE-capable. The channels are available.
The CR3023: Number of Available Channels (TCHs Converted from Dynamic PDCHs)
counter is used to measure the number of the available TCHFs converted from dynamic
PDCHs in the cells of all frequency bands under the BSC in real time.
The CR3024: Number of Available Channels (PDCHs Converted from Dynamic PDCHs)counter is used to measure the number of channels in the cells on all frequency bands under
the BSC in real time. The channels must meet the following requirements:
The channel type is PDTCH.
The configuration type is dynamic PDCH.
The channels are available.
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Trigger Point
None.
FormulaMean Number of Available Channels (SDCCH) (900/850 Cell) =
[Number of Available Channels (SDCCH) (900/850 Cell)]/
[Sampled Number of Configured Channels]
Mean Number of Available Channels (SDCCH) (1800/1900 Cell) =
[Number of Available Channels (SDCCH) (1800/1900 Cell)]/
[Sampled Number of Configured Channels]
Mean Number of Available Channels (TCHF) (900/850 Cell) =
[Number of Available Channels (TCHF) (900/850 Cell)]/
[Sampled Number of Configured Channels]
Mean Number of Available Channels (TCHF) (1800/1900 Cell) =
[Number of Available Channels (TCHF) (1800/1900 Cell)]/
[Sampled Number of Configured Channels]
Mean Number of Available Channels (TCHH) (900/850 Cell) =
[Number of Available Channels (TCHH) (900/850 Cell)]/
[Sampled Number of Configured Channels]
Mean Number of Available Channels (TCHH) (1800/1900 Cell) =
[Number of Available Channels (TCHH) (1800/1900 Cell)]/
[Sampled Number of Configured Channels]
Mean Number of Available Channels (PDCH) (900/850 Cell) =
[Number of Available Channels (PDCH) (900/850 Cell)]/
[Sampled Number of Configured Channels]
Mean Number of Available Channels (PDCH) (1800/1900 Cell) =
[Number of Available Channels (PDCH) (1800/1900 Cell)]/
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[Sampled Number of Configured Channels]
Mean Number of Available Channels (EDGE) (900/850 Cell) =
[Number of Available Channels (EDGE) (900/850 Cell)]/
[Sampled Number of Configured Channels]
Mean Number of Available Channels (EDGE) (1800/1900 Cell) =
[Number of Available Channels (EDGE) (1800/1900 Cell)]/
[Sampled Number of Configured Channels]
Mean Number of Available Channels (TCHs Converted from Dynamic PDCHs) (900/850 Cell)=
[Number of Available Channels (TCHs Converted from Dynamic PDCHs) (900/850Cell)]/[Sampled Number of Configured Channels]
Mean Number of Available Channels (TCHs Converted from Dynamic PDCHs) (1800/1900
Cell) =
[Number of Available Channels (TCHs Converted from Dynamic PDCHs) (1800/1900
Cell)]/[Sampled Number of Configured Channels]
Mean Number of Available Channels (PDCHs Converted from Dynamic PDCHs) (900/850Cell) =
[Number of Available Channels (PDCHs Converted from Dynamic PDCHs) (900/850
Cell)]/[Sampled Number of Configured Channels]
Mean Number of Available Channels (PDCHs Converted from Dynamic PDCHs) (1800/1900Cell) =
[Number of Available Channels (PDCHs Converted from Dynamic PDCHs) (1800/1900Cell)]/[Sampled Number of Configured Channels]
Mean Number of Available Channels (SDCCH) =
[Mean Number of Available Channels (SDCCH) (900/850 Cell)] +
[Mean Number of Available Channels (SDCCH) (1800/1900 Cell)]
Mean Number of Available Channels (TCH) =
[Mean Number of Available Channels (TCHF)] +
[Mean Number of Available Channels (TCHH)]
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Mean Number of Available Channels (TCHF) =
[Mean Number of Available Channels (TCHF) (900/850 Cell)] +
[Mean Number of Available Channels (TCHF) (1800/1900 Cell)]
Mean Number of Available Channels (TCHH) =
[Mean Number of Available Channels (TCHH) (900/850 Cell)] +
[Mean Number of Available Channels (TCHH) (1800/1900 Cell)]
Mean Number of Available Channels (PDCH) =
[Mean Number of Available Channels (PDCH) (900/850 Cell)] +
[Mean Number of Available Channels (PDCH) (1800/1900 Cell)]
Mean Number of Available Channels (EDGE) =
[Mean Number of Available Channels (EDGE) (900/850 Cell)] +
[Mean Number of Available Channels (EDGE) (1800/1900 Cell)]
Mean Number of Available Channels (TCHs Converted from Dynamic PDCHs) =
[Mean Number of Available Channels (TCHs Converted from Dynamic PDCHs) (900/850
Cell)] +
[Mean Number of Available Channels (TCHs Converted from Dynamic PDCHs) (1800/1900Cell)]
Mean Number of Available Channels (PDCHs Converted from Dynamic PDCHs) =
[Mean Number of Available Channels (PDCHs Converted from Dynamic PDCHs) (900/850
Cell)] +
[Mean Number of Available Channels (PDCHs Converted from Dynamic PDCHs)
(1800/1900 Cell)]
14.2.5 SDCCH Availability
Counter
RR300: SDCCH Availability
Meaning
The RR300: SDCCH Availability counter is used to measure the percentage of the number of
the available SDCCHs to the number of the configured SDCCHs.
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Trigger Point
None.
FormulaSDCCH Availability =
([Mean Number of Available Channels (SDCCH) (900/850 Cell)]+ [Mean Number of
Available Channels (SDCCH) (1800/1900 Cell)])*{100}/
([Mean Number of Dynamically Configured Channels (SDCCH) (900/850 Cell)]+ [Mean Number of Dynamically Configured Channels (SDCCH) (1800/1900 Cell)])
14.2.6 TCH Availability
Counter
RR307: TCH Availability
Meaning
The RR307: TCH Availability counter is used to measure the percentage of the number of the
available TCHs to the number of the configured TCHs.
Trigger Point
None.
Formula
TCH Availability =
([Mean Number of Available Channels (TCHF) (900/850 Cell)]+ [Mean Number of Available
Channels (TCHF) (1800/1900 Cell)]+ [Mean Number of Available Channels (TCHH)(900/850 Cell)]+ [Mean Number of Available Channels (TCHH) (1800/1900 Cell)])*{100}/
([Mean Number of Dynamically Configured Channels (TCHF) (900/850 Cell)]+ [Mean
Number of Dynamically Configured Channels (TCHF) (1800/1900 Cell)]+ [Mean Number ofDynamically Configured Channels (TCHH) (900/850 Cell)]+ [Mean Number of DynamicallyConfigured Channels (TCHH) (1800/1900 Cell)])
14.2.7 Analyzed Measurement of Initially Configured Channels
Counter
Table 14-6 lists the counters in the Analyzed Measurement of Initially Configured Channels
measurement unit.
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Table 14-6 Counters in the Analyzed Measurement of Initially Configured Channels measurementunit
Number Counter
1 CR3000: Number of Initially Configured Channels (SDCCH)
2 CR300B: Number of Initially Configured Channels (TCH)
3 CR3007: Number of Initially Configured Channels (TCHF)
4 CR3008: Number of Initially Configured Channels (TCHH)
5 CR3001: Number of Initially Configured Channels (Static PDCH)
6 CR3002: Number of Initially Configured Channels (Dynamic PDCH)
7 CR3005: Number of Initially Configured Channels (Static EDGE)
8 CR3006: Number of Initially Configured Channels (Dynamic EDGE)
9 CR3009: Number of Initially Configured Channels (CBCH)
Meaning
The CR3000: Number of Initially Configured Channels (SDCCH) counter is used to measure
the number of the configured SDCCHs (excluding the SDCCHs obtained from the dynamic
adjustment of the TCHFs) in the cells of all frequency bands within the BSC at each sampling point.
The CR300B: Number of Initially Configured Channels (TCH) counter is used to measure theconfigured TCHs (excluding the TCHs obtained from the dynamic adjustment of the dynamicPDCHs) in the cells of all frequency bands under the BSC at each sampling point.
The CR3007: Number of Initially Configured Channels (TCHF) counter is used to measure
the number of configured TCHFs (excluding the TCHFs obtained from the dynamicadjustment of the dynamic PDCHs and excluding the TCHFs obtained from the dynamic
adjustment of the TCHHs) in the cells of all frequency bands under the BSC at each sampling point.
The CR3008: Number of Initially Configured Channels (TCHH) counter is used to measure
the number of the configured TCHHs (excluding the TCHHs obtained from the dynamicadjustment of the TCHFs) in the cells of all frequency bands under the BSC at each sampling
point.
The CR3001: Number of Initially Configured Channels (Static PDCH) counter is used tomeasure the number of configured TCHHs (excluding the TCHHs obtained from the dynamic
adjustment of the TCHFs) in the cells of all frequency bands under the BSC at each sampling point.
The CR3002: Number of Initially Configured Channels (Dynamic PDCH) counter is used to
measure the number of the dynamic PDCHs (including the dynamic PDCHs that have beendynamically adjusted to TCHFs) configured in the cells of all frequency bands under the BSC
at each sampling point.
The CR3005: Number of Initially Configured Channels (Static EDGE) counter is used to
measure the number of the static EDGE PDCHs configured in the cells of all frequency bandsunder the BSC at each sampling point.
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The CR3006: Number of Initially Configured Channels (Dynamic EDGE) counter is used tomeasure the number of the dynamic EDGE PDCHs (including the dynamic EDGE PDCHsthat have been dynamically adjusted to TCHFs) configured in the cells of all frequency bands
under the BSC at each sampling point.
The CR3009: Number of Initially Configured Channels (CBCH) counter is used to measurethe number of the configured CBCHs in the cells of all frequency bands under the BSC at
each sampling point.
Trigger Point
None.
Formula
Number of Initially Configured Channels (SDCCH) =
[Number of Initially Configured Channels (SDCCH) (900/850 Cell)] +
[Number of Initially Configured Channels (SDCCH) (1800/1900 Cell)]
Number of Initially Configured Channels (TCH) =
[Number of Initially Configured Channels (TCHF)] +
[Number of Initially Configured Channels (TCHH)]
Number of Initially Configured Channels (TCHF) =
[Number of Initially Configured Channels (TCHF) (900/850 Cell)] +
[Number of Initially Configured Channels (TCHF) (1800/1900 Cell)]
Number of Initially Configured Channels (TCHH) =
[Number of Initially Configured Channels (TCHH) (900/850 Cell)] +
[Number of Initially Configured Channels (TCHH) (1800/1900 Cell)]
Number of Initially Configured Channels (Static PDCH) =
[Number of Initially Configured Channels (Static PDCH) (900/850 Cell)] +
[Number of Initially Configured Channels (Static PDCH) (1800/1900 Cell)]
Number of Initially Configured Channels (Dynamic PDCH) =
[Number of Initially Configured Channels (Dynamic PDCH) (900/850 Cell)] +
[Number of Initially Configured Channels (Dynamic PDCH) (1800/1900 Cell)]
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Number of Initially Configured Channels (Static EDGE) =
[Number of Initially Configured Channels (Static EDGE) (900/850 Cell)] +
[Number of Initially Configured Channels (Static EDGE) (1800/1900 Cell)]
Number of Initially Configured Channels (Dynamic EDGE) =
[Number of Initially Configured Channels (Dynamic EDGE) (900/850 Cell)] +
[Number of Initially Configured Channels (Dynamic EDGE) (1800/1900 Cell)]
Number of Initially Configured Channels (CBCH) =
[Number of Initially Configured Channels (CBCH) (900/850 Cell)] +
[Number of Initially Configured Channels (CBCH) (1800/1900 Cell)]
14.3 Channel Conversion Measurement per Cell
14.3.1 Overview
For the optimum assignment of the TCHs and the SDCCHs, the system supports the
conversion between full-rate TCHs (TCHFs) and half-rate TCHs (TCHHs) and the conversion between TCHs and SDCCHs in certain conditions.
The Channel Conversion Measurement per Cell measurement unit is used to measure the
number of the conversion requests and the number of the successful conversions among the previous channels.
The counters in the measurement unit reflect the implementation status of the channel
conversion procedure and the actual usage of the channel resources.
Table 14-7 lists the counters in the Channel Conversion Measurement per Cell measurementunit.
Table 14-7 Counters in the Channel Conversion Measurement per Cell measurement unit
Number Counter
1 R3505A: Channel Conversion Requests (TCHF-TCHH)
2 R3525A: Successful Channel Conversions (TCHF-TCHH)
3 R3505B: Channel Conversion Requests (TCHH-TCHF)
4 R3525B: Successful Channel Conversions (TCHH-TCHF)
5 R3516A: Number of Channel Conversions (TCH-SDCCH)
6 R3516B: Number of Channel Conversions (SDCCH-TCH)
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14.3.2 Channel Conversion Requests (TCHF-TCHH)
Counter
R3505A: Channel Conversion Requests (TCHF-TCHH)
Meaning
Because the number of the initially configured TCHFs and TCHHs cannot meet the actual
traffic requirements, the BSC enables the TCHFs to be adjusted to TCHHs in certainconditions. The initially configured dynamic PDCHs are not involved in the adjustment ofTCHHs.
In certain conditions, the initially configured TCHFs can be adjusted to TCHHs and thecorresponding TCHHs can be adjusted to TCHFs.
The trigger conditions of the adjustment from TCHFs to TCHHs during channel assignment are asfollows:
The system allows the dynamic data adjustment.
The requested type of channels is TCHH, but there is no qualified TCHH available.
There is qualified idle TCHF.
The adjustment procedure is as follows:
Select a TCHF available for adjustment. For concentric cells, select the idle channels on the TRXs in the
underlaid subcell as adjustable channels. If there are no channels available for adjustment, theadjustment fails.
Convert the channel type and update the channel resources. Then perform configurations on the channelsunder the BTS. When the conversion of the channel type is complete, the BTS sends a status changereport to the BSC.
If the channel is available, the idle TCHH converted by the BSC can be used for channel assignment.
The channel adjustment is complete and a TCHF is adjusted to two TCHHs.
Trigger Point
Before channel assignment, this counter is measured if the adjustment conditions are met and
the adjustment from TCHFs to TCHHs is triggered.
Formula
None.
14.3.3 Successful Channel Conversions (TCHF-TCHH)
Counter
R3525A: Successful Channel Conversions (TCHF-TCHH)
Meaning
Because the number of the initially configured TCHFs and TCHHs cannot meet the actual
traffic requirements, the BSC enables the TCHFs to be adjusted to TCHHs in certainconditions. The initially configured dynamic PDCHs are not involved in the adjustment of
TCHHs.
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In certain conditions, the initially configured TCHFs can be adjusted to TCHHs and thecorresponding TCHHs can be adjusted to TCHFs.
The trigger conditions of the adjustment from TCHFs to TCHHs during channel assignment are as
follows: The system allows the dynamic data adjustment.
The requested type of channels is TCHH, but there is no qualified TCHH available.
There is qualified idle TCHF.
The adjustment procedure is as follows:
Select a TCHF available for adjustment. For concentric cells, select the idle channels on the TRXs in the
underlaid subcell as adjustable channels. If there are no channels available for adjustment, theadjustment fails.
Convert the channel type and update the channel resources. Then perform configurations on the channels
under the BTS. When the conversion of the channel type is complete, the BTS sends a status changereport to the BSC.
If the channel is available, the idle TCHH converted by the BSC can be used for channel assignment.
The channel adjustment is complete and a TCHF is adjusted to two TCHHs.
Trigger Point
This counter is measured if the following conditions are met:
The adjustment from TCHFs to TCHHs is triggered.
The BSC receives a channel status change report from the BTS.
The BTS notifies to the BSC that the channel is available after the adjustment.
Formula
None.
14.3.4 Channel Conversion Requests (TCHH-TCHF)
Counter
R3505B: Channel Conversion Requests (TCHH-TCHF)
Meaning
Because the number of the initially configured TCHFs and TCHHs cannot meet the actual
traffic requirements, the BSC enables the TCHHs to be adjusted to TCHFs in certainconditions.
In certain conditions, the initially configured TCHHs can be adjusted to TCHFs and the
corresponding TCHFs can be adjusted to TCHHs.
The trigger conditions of the adjustment from TCHHs to TCHFs during channel assignment are asfollows:
The system allows the dynamic data adjustment.
The requested type of channels is TCHF, but there is no qualified TCHF available.
There are at least two qualified idle TCHHs.
The adjustment procedure is as follows:
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Select two TCHHs available for adjustment. If there are no channels available for adjustment, theadjustment fails.
Convert the channel type and update the channel resources. Then perform configurations on the channels
under the BTS. When the conversion of the channel type is complete, the BTS sends a status changereport to the BSC.
If the channel is available, the idle TCHF converted by the BSC can be used for channel assignment.The channel adjustment is complete and the two TCHHs are adjusted to one TCHF.
Trigger Point
Before the channel assignment, this counter is measured when the adjustment from two
TCHFs to a TCHF is initiated.
Formula
None.
14.3.5 Successful Channel Conversions (TCHH-TCHF)
Counter
R3525B: Successful Channel Conversions (TCHH-TCHF)
Meaning
Because the number of the initially configured TCHFs and TCHHs cannot meet the actualtraffic requirements, the BSC enables the TCHHs to be adjusted to TCHFs in certain
conditions.
In certain conditions, the initially configured TCHHs can be adjusted to TCHFs and thecorresponding TCHFs can be adjusted to TCHHs.
The trigger conditions of the adjustment from TCHHs to TCHFs during channel assignment are asfollows:
The system allows the dynamic data adjustment.
The requested type of channels is TCHF, but there is no qualified TCHF available.
There are at least two qualified idle TCHHs.
The adjustment procedure is as follows:
Select two TCHHs available for adjustment. If there are no channels available for adjustment, the
adjustment fails.
Convert the channel type and update the channel resources. Then perform configurations on the channelsunder the BTS. When the conversion of the channel type is complete, the BTS sends a status change
report to the BSC.
If the channel is available, the idle TCHF converted by the BSC can be used for channel assignment.The channel adjustment is complete and the two TCHHs are adjusted to one TCHF.
Trigger Point
This counter is measured if the following conditions are met:
The adjustment from TCHHs to TCHFs is triggered.
The BSC receives a channel status change report from the BTS.
The BTS notifies to the BSC that the channel is available after the adjustment.
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Formula
None.
14.3.6 Number of Channel Conversions (TCH-SDCCH)Counter
R3516A: Number of Channel Conversions (TCH-SDCCH)
Meaning
When assigning the SDCCHs, the BSC starts to convert a TCH to a SDCCH if the following
conditions are met:
Dynamic adjustment of SDCCH is allowed.
Number of the idle SDCCHs in the current cell is smaller than the set threshold on theLMT.
If the adjusted TCH is idle, the dynamic conversion from TCH to SDCCH is immediately
originated. If the adjusted TCH is not idle, the call that seizes the current TCH is handed over
to another channel. Then the dynamic adjustment is originated.
Trigger Point
When the BSC originates the dynamic adjustment from TCH to SDCCH, this counter is
measured.
Formula None.
14.3.7 Number of Channel Conversions (SDCCH-TCH)
Counter
R3516B: Number of Channel Conversions (SDCCH-TCH)
Meaning
If the dynamic adjustment of SDCCH is allowed, the BSC activates the dynamic adjustmentalgorithm (leaky bucket algorithm) to periodically switch the SDCCH (dynamically converted
from TCH) back to TCH. If the SDCCH is in use, reassigning the SDCCH after a release isforbidden. The SDCCH is directly switched back to TCH after the release.
Trigger Point
When the SDCCH is converted to TCH, this counter is measured.
Formula
None.
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14.4 Channel Busy Duration Measurement per Cell
14.4.1 Overview
The Channel Busy Duration Measurement per Cell measurement unit is used to measure thefollowing items:
Duration of busy state of SDCCH and TCH in the cell
Duration of the state of no available SDCCHs and TCHs
This measurement unit reflects the use of SDCCH and TCH.
Table 14-8 lists the classification of the counters in the Channel Busy Duration Measurement per Cell measurement unit.
Table 14-8 Classification of the counters in the Channel Busy Duration Measurement per Cellmeasurement unit
Counter Classification Section
Busy State Duration of All Channels (SDCCH/TCHF/TCHH) 14.4.2
Mean Duration of Busy State for All Channels (SDCCH/TCHF/TCHH) 14.4.3
14.4.2 Busy State Duration of All Channels(SDCCH/TCHF/TCHH)
Counter
Table 14-9 lists the counters in the Busy State Duration of All Channels(SDCCH/TCHF/TCHH) measurement unit.
Table 14-9 Counters in the Busy State Duration of All Channels (SDCCH/TCHF/TCHH)measurement unit
Number Counter
1 R3540: Busy State Duration of Channels (SDCCH)
2 R3541: Busy State Duration of Channels (TCHF)
3 R3542: Busy State Duration of Channels (TCHH)
Meaning
The previous counters are used to measure the following items of a cell under the BSC in a
granularity period:
Duration of the state of no available SDCCHs
Duration of the state of no available TCHFs
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Duration of the state of no available TCHHs
At the timing sampling points for channel assignment measurement, the duration of the
previous counters is accumulated based on the channel type in either of the following cases:
All the SDCCHs in the cell are seized or unavailable. All the TCHFs in the cell are seized or unavailable.
All the TCHHs in the cell are seized or unavailable.
Trigger Point
At the timing sampling points for channel assignment measurement, if the SDCCHs, TCHFs,
or TCHHs in all the cells are not available, the previous counters are measured.
Formula
None.
14.4.3 Mean Duration of Busy State for All Channels(SDCCH/TCHF/TCHH)
Counter
Table 14-10 lists the counters in the Mean Duration of Busy State for All Channels
(SDCCH/TCHF/TCHH) measurement unit.
Table 14-10 Counters in the Mean Duration of Busy State for All Channels
(SDCCH/TCHF/TCHH) measurement unit
Number Counter
1 AR3530: Mean Duration of Busy State for Channels (SDCCH)
2 AR3531: Mean Duration of Busy State for Channels (TCHF)
3 AR3532: Mean Duration of Busy State for Channels (TCHH)
Meaning
This measurement unit is used to measure the mean duration of the state for seized SDCCHs,
TCHFs, or TCHHs configured in a cell under the BSC in a granularity period.
The previous counters reflect the random access frequency of an MS on the cell in the
granularity period in the form of the mean duration of busy state for channels.
The Mean Duration of Busy State for Channels (SDCCH) counter is expressed in seconds.
Trigger Point
None.
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Formula
Mean Duration of Busy State for Channels (SDCCH) =
[Busy State Duration of Channels (SDCCH)]/(([Number of Dynamically Configured
Channels (SDCCH) (900/850 Cell)]/[Sampled Number of Configured Channels])+([Numberof Dynamically Configured Channels (SDCCH) (1800/1900 Cell)]/[Sampled Number ofConfigured Channels]))
Mean Duration of Busy State for Channels (TCHF) =
[Busy State Duration of Channels (TCHF)]/(([Number of Dynamically Configured Channels(TCHF) (900/850 Cell)]/[Sampled Number of Configured Channels])+([Number ofDynamically Configured Channels (TCHF) (1800/1900 Cell)]/[Sampled Number of
Configured Channels]))
Mean Duration of Busy State for Channels (TCHH) =
[Busy State Duration of Channels (TCHH)]/(([Number of Dynamically Configured Channels
(TCHH) (900/850 Cell)]/[Sampled Number of Configured Channels])+([Number ofDynamically Configured Channels (TCHH) (1800/1900 Cell)]/[Sampled Number of
Configured Channels]))
14.5 Measurement of Maximum Busy Channels per Cell
CounterThe Measurement of Maximum Busy Channels per Cell measurement unit is used to measure
the maximum number of the busy SDCCHs and the busy TCHs configured in a cell under theBSC in a granularity period. This measurement unit reflects the highest frequency of the MSrandom access in the cell in the granularity period in the form of the maximum number of
busy channels.
Table 14-11 lists the counters in the Measurement of Maximum Busy Channels per Cellmeasurement unit.
Table 14-11 Counters in the Measurement of Maximum Busy Channels per Cell measurementunit
Number Counter
1 R3560: Maximum Number of Busy Channels (SDCCH)
2 R3561: Maximum Number of Busy Channels (TCHF)
3 R3562: Maximum Number of Busy Channels (TCHH)
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Meaning
The previous counters are used to measure the maximum number of busy SDCCHs, busy
TCHFs, and busy TCHHs configured in a cell under the BSC. At the sampling points of the
channel assignment measurement, the system records the maximum number of busy SDCCHs,
busy TCHFs, and busy TCHHs through comparisons.
Trigger Point
At the sampling points of the channel assignment measurement, the system obtains the
maximum number of busy SDCCHs, busy TCHFs, or TCHHs through comparisons in the
granularity period and records the number in the corresponding counter.
Formula
None.
14.6 Channel State Measurement per Cell
14.6.1 Overview
The Channel State Measurement per Cell measurement unit is used to measure the followingitems in the cells on the 900/850 or 1800/1900 band:
Mean number of busy SDCCHs
Mean number of busy TCHs
Mean number of blocked SDCCHs Mean number of blocked TCHs
Mean number of idle SDCCHs
Mean number of idle TCHs
The number of channels includes the number of converted SDCCHs or TCHs.
A channel has three states: busy, blocked, and idle.
The busy state means that the channel is seized. The mean number of busy state reflects therandom access frequency of an MS in the cell at a sampling point in the form of the number of
the seized channels.
The blocked state means that the channel is blocked because of operation and maintenance(O&M) or because of broken radio signaling links (RSLs). The mean number of blocked state
reflects the blocking of channels in the cell at a sampling point because of O&M or because ofthe broken RSLs.
The idle state means that the channel is not seized and is normal. The mean number of idle
state reflects the idling of channels in the cell at a sampling point.
Table 14-12 lists the classification of the counters in the Channel State Measurement per Cellmeasurement unit.
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Table 14-12 Classification of the counters in the Channel State Measurement per Cellmeasurement unit
Counter Classification Section
Mean Number of Busy Signaling Channels (SDCCH/TCHF/TCHH) 14.6.2
Mean Number of Busy TCHs (TCHF/TCHH) 14.6.3
Mean Number of Blocked Channels 14.6.4
Mean Number of Idle Channels 14.6.5
Mean Number of Busy TCHs (Overlaid Subcell) 14.6.6
Mean Number of Busy TCHs (Underlaid Subcell) 14.6.7
Mean Number of Busy Signaling Channels (SDCCH/TCHF/TCHH) 14.6.8
Mean Number of Busy TCHs (TCHF/TCHH) 14.6.9
14.6.2 Mean Number of Busy Signaling Channels(SDCCH/TCHF/TCHH)
Counter
Table 14-13 lists the counters in the Mean Number of Busy Signaling Channels(SDCCH/TCHF/TCHH) measurement unit.
Table 14-13 Counters in the Mean Number of Busy Signaling Channels (SDCCH/TCHF/TCHH)measurement unit
Number Counter
1 AR3550A: Mean Number of Busy Signaling Channels (SDCCH) (900/850
Cell)
2 AR3550B: Mean Number of Busy Signaling Channels (SDCCH) (1800/1900Cell)
3 AR3553A: Mean Number of Busy Signaling Channels (TCHF) (900/850 Cell)
4 AR3553B: Mean Number of Busy Signaling Channels (TCHF) (1800/1900Cell)
5 AR3554A: Mean Number of Busy Signaling Channels (TCHH) (900/850 Cell)
6 AR3554B: Mean Number of Busy Signaling Channels (TCHH) (1800/1900Cell)
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Meaning
Various types (SDCCH, TCHF, or TCHH) of channels configured in the cells can be used as
signaling channels. The previous counters are used to measure the mean number of the seized
signaling channels under the BSC in the granularity period.
The previous counters are the total number (obtained from all the sampling points in thegranularity period) of busy signaling channels divided by the sampling number.
Trigger Point
None.
Formula
Mean Number of Busy Signaling Channels (SDCCH) (900/850 Cell) =
[Number of Busy Signaling Channels (SDCCH) (900/850 Cell)]/[Sampled Number of
Channel State]
Mean Number of Busy Signaling Channels (SDCCH) (1800/1900 Cell) =
[Number of Busy Signaling Channels (SDCCH) (1800/1900 Cell)]/[Sampled Number ofChannel State]
Mean Number of Busy Signaling Channels (TCHF) (900/850 Cell) =
[Number of Busy Signaling Channels (TCHF) (900/850 Cell)]/[Sampled Number of ChannelState]
Mean Number of Busy Signaling Channels (TCHF) (1800/1900 Cell) =
[Number of Busy Signaling Channels (TCHF) (1800/1900 Cell)]/[Sampled Number ofChannel State]
Mean Number of Busy Signaling Channels (TCHH) (900/850 Cell) =
[Number of Busy Signaling Channels (TCHH) (900/850 Cell)]/[Sampled Number of Channel
State]
Mean Number of Busy Signaling Channels (TCHH) (1800/1900 Cell) =
[Number of Busy Signaling Channels (TCHH) (1800/1900 Cell)]/[Sampled Number of
Channel State]
14.6.3 Mean Number of Busy TCHs (TCHF/TCHH)
Counter
Table 14-14 lists the counters in the Mean Number of Busy TCHs (TCHF/TCHH)measurement unit.
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Table 14-14 Counters in the Mean Number of Busy TCHs (TCHF/TCHH) measurement unit
Number Counter
1 AR3551A: Mean Number of Busy TCHs (TCHF) (900/850 Cell)
2 AR3551B: Mean Number of Busy TCHs (TCHF) (1800/1900 Cell)
3 AR3552A: Mean Number of Busy TCHs (TCHH) (900/850 Cell)
4 AR3552B: Mean Number of Busy TCHs (TCHH) (1800/1900 Cell)
Meaning
Various types of channels configured in the cells can be used as traffic channels. The previous
counters are used to measure the mean number of the seized traffic channels under the BSC in
the granularity period.
Trigger Point
None.
Formula
Mean Number of Busy TCHs (TCHF) (900/850 Cell) =
[Number of Busy TCHs (TCHF) (900/850 Cell)]/[Sampled Number of Channel State]
Mean Number of Busy TCHs (TCHF) (1800/1900 Cell) =
[Number of Busy TCHs (TCHF) (1800/1900 Cell)]/[Sampled Number of Channel State]
Mean Number of Busy TCHs (TCHH) (900/850 Cell) =
[Number of Busy TCHs (TCHH) (900/850 Cell)]/[Sampled Number of Channel State]
Mean Number of Busy TCHs (TCHH) (1800/1900 Cell) =
[Number of Busy TCHs (TCHH) (1800/1900 Cell)]/[Sampled Number of Channel State]
14.6.4 Mean Number of Blocked Channels
Counter
Table 14-15 lists the counters in the Mean Number of Blocked Channels measurement unit.
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Table 14-15 Counters in the Mean Number of Blocked Channels measurement unit
Number Counter
1 AR3570: Mean Number of Blocked Channels (SDCCH)
2 AR3571: Mean Number of Blocked Channels (TCHF)
3 AR3572: Mean Number of Blocked Channels (TCHH)
Meaning
The previous counters are used to measure the mean number of the blocked SDCCHs, of the
blocked TCHFs, and of the blocked TCHHs in a cell under the BSC in the granularity period.
Trigger Point None.
Formula
Mean Number of Blocked Channels (SDCCH) =
[Number of Blocked Channels (SDCCH)]/[Sampled Number of Channel State]
Mean Number of Blocked Channels (TCHF) =
[Number of Blocked Channels (TCHF)]/[Sampled Number of Channel State]
Mean Number of Blocked Channels (TCHH) =
[Number of Blocked Channels (TCHH)]/[Sampled Number of Channel State]
14.6.5 Mean Number of Idle Channels
Counter
Table 14-16 lists the counters in the Mean Number of Idle Channels measurement unit.
Table 14-16 Counters in the Mean Number of Idle Channels measurement unit
Number Counter
1 AR3580: Mean Number of Idle Channels (SDCCH)
2 AR3581: Mean Number of Idle Channels (TCHF)
3 AR3582: Mean Number of Idle Channels (TCHH)
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Meaning
The previous counters are used to measure the mean number of the idle SDCCHs, of the idle
TCHFs, and of the idle TCHHs in a cell under the BSC in the granularity period.
Trigger Point
None.
Formula
Mean Number of Idle Channels (SDCCH) =
[Number of Idle Channels (SDCCH)]/[Sampled Number of Channel State]
Mean Number of Idle Channels (TCHF) =
[Number of Idle Channels (TCHF)]/[Sampled Number of Channel State]
Mean Number of Idle Channels (TCHH) =
[Number of Idle Channels (TCHH)]/[Sampled Number of Channel State]
14.6.6 Mean Number of Busy TCHs (Overlaid Subcell)
Counter
AR3557: Mean Number of Busy TCHs (Overlaid Subcell)
Meaning
This counter is used to measure the mean number of the busy traffic channels (TCHFs orTCHHs) in an overlaid subcell under the BSC during the granularity period.
Trigger Point
None.
FormulaMean Number of Busy TCHs (Overlaid Subcell) =
[Number of Busy TCHs (Overlaid Subcell)]/[Sampled Number of Channel State]
14.6.7 Mean Number of Busy TCHs (Underlaid Subcell)
Counter
AR3558: Mean Number of Busy TCHs (Underlaid Subcell)
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Meaning
This counter is used to measure the mean number of the busy traffic channels (TCHFs or
TCHHs) in an underlaid subcell under the BSC during the granularity period.
Trigger Point
None.
Formula
Mean Number of Busy TCHs (Underlaid Subcell) =
[Number of Busy TCHs (Underlaid Subcell)]/[Sampled Number of Channel State]
14.6.8 Mean Number of Busy Signaling Channels
(SDCCH/TCHF/TCHH)
Counter
Table 14-17 lists the counters in the Mean Number of Busy Signaling Channels
(SDCCH/TCHF/TCHH) measurement unit.
Table 14-17 Counters in the Mean Number of Busy Signaling Channels (SDCCH/TCHF/TCHH)measurement unit
Number Counter
1 CR3550: Mean Number of Busy Signaling Channels (SDCCH)
2 CR3553: Mean Number of Busy Signaling Channels (TCHF)
3 CR3554: Mean Number of Busy Signaling Channels (TCHH)
Meaning
Various types of channels configured in the cells can be used as signaling channels. The
previous counters are used to measure the mean number of the seized signaling channels
under the BSC in the granularity period.
Trigger Point
None.
Formula
Mean Number of Busy Signaling Channels (SDCCH) =
[Mean Number of Busy Signaling Channels (SDCCH) (900/850 Cell)] +
[Mean Number of Busy Signaling Channels (SDCCH) (1800/1900 Cell)]
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Mean Number of Busy Signaling Channels (TCHF) =
[Mean Number of Busy Signaling Channels (TCHF) (900/850 Cell)] +
[Mean Number of Busy Signaling Channels (TCHF) (1800/1900 Cell)]
Mean Number of Busy Signaling Channels (TCHH) =
[Mean Number of Busy Signaling Channels (TCHH) (900/850 Cell)] +
[Mean Number of Busy Signaling Channels (TCHH) (1800/1900 Cell)]
14.6.9 Mean Number of Busy TCHs (TCHF/TCHH)
Counter
Table 14-18 list the counters in the Mean Number of Busy TCHs (TCHF/TCHH)measurement unit.
Table 14-18 Counters in the Mean Number of Busy TCHs (TCHF/TCHH) measurement unit
Number Counter
1 CR3551: Mean Number of Busy TCHs (TCHF)
2 CR3552: Mean Number of Busy TCHs (TCHH)
Meaning
TCHFs and TCHHs configured in the cells can be used as traffic channels. The previous
counters are used to measure the mean number of the seized traffic channels under the BSC inthe granularity period.
Trigger Point
None.
Formula
Mean Number of Busy TCHs (TCHF) =
[Mean Number of Busy TCHs (TCHF) (900/850 Cell)] +
[Mean Number of Busy TCHs (TCHF) (1800/1900 Cell)]
Mean Number of Busy TCHs (TCHH) =
[Mean Number of Busy TCHs (TCHH) (900/850 Cell)] +
[Mean Number of Busy TCHs (TCHH) (1800/1900 Cell)]
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14-38 Huawei Technologies Proprietary Issue 03 (2007-05-09)
14.7 Channel Assignment Request Measurement per Cell
14.7.1 Overview
BSS channel assignment occurs in the following procedures:
Immediate assignment
Assignment
Internal intra-cell handover
Internal inter-cell handover
Incoming external inter-cell handover
The Channel Assignment Request Measurement per Cell measurement unit is used to measure
the SDCCH assignment requests and the TCH assignment requests in the previous procedures.
Table 14-19 lists the classification of the counters in the Channel Assignment Request
Measurement per Cell measurement unit.
Table 14-19 Classification of the counters in the Channel Assignment Request Measurement per
Cell measurement unit
Counter Classification Section
Channel Assignment Requests in Immediate Assignment Procedure(SDCCH/TCHF/TCHH/TCH)
14.7.2
Channel Assignment Requests in Assignment Procedure (TCHF/TCHH/TCH) 14.7.3
Channel Assignment Requests in Internal Intra-Cell Handover Procedure
(SDCCH/TCHF/TCHH/TCH)
14.7.4
Channel Assignment Requests in Incoming Internal Inter-Cell Handover
Procedure (SDCCH/TCHF/TCHH/TCH)
14.7.5
Channel Assignment Requests in Incoming External Inter-Cell Handover
Procedure (SDCCH/TCHF/TCHH/TCH)
14.7.6
Channel Assignment Requests (SDCCH) 14.7.7
Channel Assignment Requests (TCHF) 14.7.8
Channel Assignment Requests (TCHH) 14.7.9
Channel Assignment Requests (TCH) 14.7.10
14.7.2 Channel Assignment Requests in Immediate AssignmentProcedure (SDCCH/TCHF/TCHH/TCH)
Counter
Table 14-20 lists the counters in the Channel Assignment Requests in Immediate Assignment
Procedure (SDCCH/TCHF/TCHH/TCH) measurement unit.
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Performance Counter Reference 14 Channel Measurement
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Table 14-20 Counters in the Channel Assignment Requests in Immediate Assignment Procedure(SDCCH/TCHF/TCHH/TCH) measurement unit
Number Counter
1 R3100A: Channel Assignment Requests in Immediate Assignment Procedure(SDCCH)
2 R3107A: Channel Assignment Requests in Immediate Assignment Procedure(TCHF)
3 R3108A: Channel Assignment Requests in Immediate Assignment Procedure
(TCHH)
4 R3109A: Channel Assignment Requests in Immediate Assignment Procedure
(TCH)
Meaning
The previous counters are used to measure the channel assignment requests for SDCCHs,TCHFs, and TCHHs in the immediate assignment procedure. When the MS directly sends the
requests to the BSS or sends requests in the reassignment procedure, the correspondingcounters are measured based on the channel type.
Channel Assignment Requests in Immediate Assignment Procedure (TCH) indicates that the
number of the channel assignment requests for TCHFs or TCHHs in the immediateassignment procedure.
Trigger PointAs shown at point A in Figure 14-1, the BSC measures the previous counters based on the
channel type in the immediate assignment procedure if the following conditions are met:
The BSC receives the CHAN RQD message from the BTS.
The MS requests for SDCCHs, TCHFs, or TCHHs or the system performs anotherrequest for SDCCHs, TCHFs, or TCHHs.
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Figure 14-1 Channel assignment in the immediate assignment procedure
BTS BSCMS
A
CHAN REQ
CHAN RQD
CHAN ACT
CHAN ACT ACK
IMM ASS
IMM ASS
SABM
UA
EST IND
Formula
None.
14.7.3 Channel Assignment Requests in Assignment Procedure(TCHF/TCHH/TCH)
CounterTable 14-21 lists the counters in the Channel Assignment Requests in Assignment Procedure
(TCHF/TCHH/TCH) measurement unit.
Table 14-21 Counters in the Channel Assignment Requests in Assignment Procedure
(TCHF/TCHH/TCH) measurement unit
Number Counter
1 R3107B: Channel Assignment Requests in Assignment Procedure (TCHF)
2 R3108B: Channel Assignment Requests in Assignment Procedure (TCHH)
3 R3109B: Channel Assignment Requests in Assignment Procedure (TCH)
Meaning
In the assignment procedure, the BSS assigns radio channels to an MS for signaling
transmission. After the radio resource connection is established between the MS and the BSS,the mobility management and call control connection to the MSC is established through theradio channel. According to the call control connection request from the MS, the MSC assigns
terrestrial resources to the MS and specifies the channel type for the assignment procedure inthe ASS REQ message.
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If the MSC specifies TCHFs or TCHHs for the assignment procedure in the ASS REQmessage, the BSC measures this counter after receiving the message.
Channel Assignment Requests in Assignment Procedure (TCH) indicates that the number of
the channel assignment requests for TCHFs or TCHHs in the assignment procedure.
Trigger Point
As shown at point A in Figure 14-2, the previous counters are measured if the BSC receives
the ASS REQ message from the MSC and the channel type that the message carries is TCHFor TCHH.
Figure 14-2 Channel assignment in the assignment procedure
BTS BSCMS
A
ASS REQ
CHAN ACT
CHAN ACT ACK
ASS CMD
SABM
UA
MSC
Formula
None.
14.7.4 Channel Assignment Requests in Internal Intra-CellHandover Procedure (SDCCH/TCHF/TCHH/TCH)
Counter
Table 14-22 lists the counters in the Channel Assignment Requests in Internal Intra-Cell
Handover Procedure (SDCCH/TCHF/TCHH/TCH) measurement unit.
Table 14-22 Counters in the Channel Assignment Requests in Internal Intra-Cell Handover
Procedure (SDCCH/TCHF/TCHH/TCH) measurement unit
Number Counter
1 R3100C: Channel Assignment Requests in Internal Intra-Cell HandoverProcedure (SDCCH)
2 R3107C: Channel Assignment Requests in Internal Intra-Cell Handover
Procedure (TCHF)
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14-42 Huawei Technologies Proprietary Issue 03 (2007-05-09)
Number Counter
3 R3108C: Channel Assignment Requests in Internal Intra-Cell Handover
Procedure (TCHH)
4 R3109C: Channel Assignment Requests in Internal Intra-Cell HandoverProcedure (TCH)
Meaning
In the internal intra-cell handover procedure, the BSC requests the system to reassign theradio channels. If the requested channel type is SDCCH, TCHF, or TCHH, the corresponding
counters are measured after the BSC receives the requests.
Channel Assignment Requests in Internal Intra-Cell Handover Procedure (TCH) indicates that
the number of the channel assignment requests for TCHFs or TCHHs in the internal intra-cellhandover procedure.
Trigger Point
As shown at point A in Figure 14-3, the previous counters are measured based on the channel
type if the requested channel is SDCCH, TCHF, or TCHH in the internal intra-cell handover procedure.
Figure 14-3 Channel assignment in the internal intra-cell handover procedure
BTS BSCMS
A
CHAN REQ
CHAN ACT
CHAN ACT ACK
HO CMD
CHAN RQD
Formula
None.
14.7.5 Channel Assignment Requests in Incoming Internal Inter-Cell Handover Procedure (SDCCH/TCHF/TCHH/TCH)
Counter
Table 14-23 lists the counters in the Channel Assignment Requests in Incoming Internal Inter-
Cell Handover Procedure (SDCCH/TCHF/TCHH/TCH) measurement unit.
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Table 14-23 Counters in the Channel Assignment Requests in Incoming Internal Inter-CellHandover Procedure (SDCCH/TCHF/TCHH/TCH) measurement unit
Number Counter
1 R3100D: Channel Assignment Requests in Incoming Internal Inter-CellHandover Procedure (SDCCH)
2 R3107D: Channel Assignment Requests in Incoming Internal Inter-CellHandover Procedure (TCHF)
3 R3108D: Channel Assignment Requests in Incoming Internal Inter-Cell
Handover Procedure (TCHH)
4 R3109D: Channel Assignment Requests in Incoming Internal Inter-Cell
Handover Procedure (TCH)
Meaning
In the incoming internal inter-cell handover procedure, the BSC requests the system toreassign the radio channels. If the requested channel type is SDCCH, TCHF, or TCHH, the
corresponding counters are measured after the BSC receives the requests.
Channel Assignment Requests in Incoming Internal Inter-Cell Handover Procedure (TCH)indicates that the number of the channel assignment requests for TCHFs or TCHHs in the
incoming internal inter-cell handover procedure.
Trigger Point
As shown at point A in Figure 14-4, the previous counters are measured based on the channel
type if the requested channel is SDCCH, TCHF, or TCHH in the incoming internal inter-cellhandover procedure.
Figure 14-4 Channel assignment in the incoming internal inter-cell handover procedure
BTS BSCMS
A
MR
CHAN ACT
CHAN ACT ACK
HO CMD
Formula
None.
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14-44 Huawei Technologies Proprietary Issue 03 (2007-05-09)
14.7.6 Channel Assignment Requests in Incoming External Inter-Cell Handover Procedure (SDCCH/TCHF/TCHH/TCH)
CounterTable 14-24 lists the counters in the Channel Assignment Requests in Incoming External
Inter-Cell Handover Procedure measurement unit.
Table 14-24 Counters in the Channel Assignment Requests in Incoming External Inter-CellHandover Procedure measurement unit
Number Counter
1 R3100E: Channel Assignment Requests in Incoming External Inter-Cell
Handover Procedure (SDCCH)
2 R3107E: Channel Assignment Requests in Incoming External Inter-CellHandover Procedure (TCHF)
3 R3108E: Channel Assignment Requests in Incoming External Inter-CellHandover Procedure (TCHH)
4 R3109E: Channel Assignment Requests in Incoming External Inter-CellHandover Procedure (TCH)
Meaning
The previous counters measure the times that the cells under the BSC receives theHANDOVER REQUEST message about SDCCH, TCHF, or TCHH from other BSCs throughthe MSC in the incoming external inter-cell handover procedure.
Channel Assignment Requests in Incoming External Inter-Cell Handover Procedure (TCH)
indicates that the number of the channel assignment requests for TCHFs or TCHHs in theincoming external inter-cell handover procedure.
Trigger Point
As shown at point A in Figure 14-5, the previous counters are measured based on the channel
type if the requested channel is SDCCH, TCHF, or TCHH in the incoming external inter-cell
handover procedure.
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Performance Counter Reference 14 Channel Measurement
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Figure 14-5 Channel assignment in the incoming external inter-cell handover procedure
BSC1 MSCMS BSC2
A
BTS2
HO RQD
HO REQ
MR
CHAN ACT
CHAN ACT ACK
HO REQ ACK
HO CMD
HO CMD
Formula
None.
14.7.7 Channel Assignment Requests (SDCCH)
Counter
CR3100: Channel Assignment Requests (SDCCH)
Meaning
If the requested channel type is SDCCH, the BSC measures the channel assignment requests
in the following procedures:
Immediate assignment
Internal intra-cell handover
Incoming internal inter-cell handover
Incoming external inter-cell handover
Trigger Point
None.
Formula
Channel Assignment Requests (SDCCH) =
[Channel Assignment Requests in Immediate Assignment Procedure (SDCCH)]+ [Channel
Assignment Requests in Internal Intra-Cell Handover Procedure (SDCCH)]+ [ChannelAssignment Requests in Incoming Internal Inter-Cell Handover Procedure (SDCCH)]+
[Channel Assignment Requests in Incoming External Inter-Cell Handover Procedure
(SDCCH)]
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14.7.8 Channel Assignment Requests (TCHF)
Counter
CR3107: Channel Assignment Requests (TCHF)
Meaning
If the requested channel type is TCHF, the BSC measures the channel assignment requests in
the following procedures:
Immediate assignment
Assignment
Internal intra-cell handover
Incoming internal inter-cell handover
Incoming external inter-cell handover
Trigger Point
None.
Formula
Channel Assignment Requests (TCHF) =
[Channel Assignment Requests in Immediate Assignment Procedure (TCHF)]+ [ChannelAssignment Requests in Assignment Procedure (TCHF)]+ [Channel Assignment Requests in
Internal Intra-Cell Handover Procedure (TCHF)]+ [Channel Assignment Requests inIncoming Internal Inter-Cell Handover Procedure (TCHF)]+ [Channel Assignment Requestsin Incoming External Inter-Cell Handover Procedure (TCHF)]
14.7.9 Channel Assignment Requests (TCHH)
Counter
CR3108: Channel Assignment Requests (TCHH)
Meaning
If the requested channel type is TCHH, the BSC measures the channel assignment requests inthe following procedures:
Immediate assignment
Assignment
Internal intra-cell handover
Incoming internal inter-cell handover
Incoming external inter-cell handover
Trigger Point
None.
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Formula
Channel Assignment Requests (TCHH) =
[Channel Assignment Requests in Immediate Assignment Procedure (TCHH)]+ [Channel
Assignment Requests in Assignment Procedure (TCHH)]+ [Channel Assignment Requests inInternal Intra-Cell Handover Procedure (TCHH)] + [Channel Assignment Requests inIncoming Internal Inter-Cell Handover Procedure (TCHH)]+ [Channel Assignment Requests
in Incoming External Inter-Cell Handover Procedure (TCHH)]
14.7.10 Channel Assignment Requests (TCH)
Counter
CR3109: Channel Assignment Requests (TCH)
MeaningIf the requested channel type is TCH, the BSC measures the channel assignment requests inthe following procedures:
Immediate assignment
Assignment
Internal intra-cell handover
Incoming internal inter-cell handover
Incoming external inter-cell handover
Trigger Point None.
Formula
Channel Assignment Requests (TCH) =
[Channel Assignment Requests in Immediate Assignment Procedure (TCH)]+ [ChannelAssignment Requests in Assignment Procedure (TCH)]+ [Channel Assignment Requests inInternal Intra-Cell Handover Procedure (TCH)]+ [Channel Assignment Requests in Incoming
Internal Inter-Cell Handover Procedure (TCH)]+ [Channel Assignment Requests in Incoming
External Inter-Cell Handover Procedure (TCH)]
14.8 Channel Assignment Success Measurement per TRX
14.8.1 Overview
The Channel Assignment Success Measurement per TRX measurement unit is used to
measure the successful channel assignments in the following procedures based on differentchannel types:
Immediate assignment
Assignment
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Internal intra-cell handover
Incoming internal inter-cell handover
Incoming external inter-cell handover
Table 14-25 lists the classification of the counters in the Channel Assignment SuccessMeasurement per TRX measurement unit.
Table 14-25 Classification of the counters in the Channel Assignment Success Measurement perTRX measurement unit
Counter Classification Section
Successful Channel Assignments in Immediate Assignment Procedure(SDCCH/ TCHF/TCHH)
14.8.2
Successful Channel Assignments in Assignment Procedure (TCHF/TCHH) 14.8.3
Successful Channel Assignments in Internal Intra-Cell Handover Procedure(SDCCH/ TCHF/TCHH) 14.8.4
Successful Channel Assignments in Incoming Internal Inter-Cell HandoverProcedure (SDCCH/ TCHF/TCHH)
14.8.5
Successful Channel Assignments in Incoming External Inter-Cell Handover
Procedure (SDCCH/ TCHF/TCHH)
14.8.6
Successful Channel Assignments (SDCCH) 14.8.7
Successful Channel Assignments (TCHF) 14.8.8
Successful Channel Assignments (TCHH) 14.8.9
Successful Channel Assignments (TCH) 14.8.10
14.8.2 Successful Channel Assignments in Immediate AssignmentProcedure (SDCCH/ TCHF/TCHH)
Counter
Table 14-26 lists the counters in the Channel Assignment Success Measurement per TRX
measurement unit.
Table 14-26 Counters in the Channel Assignment Success Measurement per TRX measurementunit
Number Counter
1 R4110A: Successful Channel Assignments in Immediate Assignment
Procedure (SDCCH)
2 R4117A: Successful Channel Assignments in Immediate Assignment
Procedure (TCHF)
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Number Counter
3 R4118A: Successful Channel Assignments in Immediate Assignment
Procedure (TCHH)
Meaning
The previous counters are used to measure the successful assignments of SDCCH, TCHF, or
TCHH in the immediate assignment procedure. In the immediate assignment procedure, the
BSC assigns channels after receiving the CHAN RQD message from the BTS. If the BSCsuccessfully assigns the channel resources, the previous counters are measured based ondifferent channel types before the BSC delivers the CHAN ACT message to the BTS.
The previous counters are used to measure the times that the BSC radio resource managementmodule successfully searches an idle SDCCH in the channel resource table after receiving the
request for SDCCHs. The number of the times includes the number of successful preemptionsof SDCCHs. Then the BSC sends the CHAN ACT message to the BTS to activate the
SDCCH.
Trigger Point
As shown at point A in Figure 14-6, the previous counters are measured before the BSC sends
the CHAN ACT message to the BTS if the following conditions are met:
The BSC receives the CHAN RQD message.
The requested channels are successfully assigned.
In the immediate assignment procedure, the previous counters are measured if the BSC radioresource management module successfully searches or preempts an idle SDCCH in thechannel resource table.
Figure 14-6 Channel assignment in the immediate assignment procedure
BTS BSCMS
A
CHAN REQ
CHAN ACT
CHAN ACT ACK
CHAN RQD
IMM ASS CMD
IMM ASS CMD
SABM
UA
EST IND
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Formula
None.
14.8.3 Successful Channel Assignments in Assignment Procedure(TCHF/TCHH)
Counter
Table 14-27 lists the counters in the Successful Channel Assignments in Assignment
Procedure (TCHF/TCHH) measurement unit.
Table 14-27 Counters in the Successful Channel Assignments in Assignment Procedure(TCHF/TCHH) measurement unit
Number Counter
1 R4117B: Successful Channel Assignments in Assignment Procedure (TCHF)
2 R4118B: Successful Channel Assignments in Assignment Procedure (TCHH)
Meaning
In the TCH assignment procedure, the MSC sends the ASS REQ message to the BSC. The
message carries the information about the channel type in this assignment and about the voiceversion of this assignment. The BSC assigns channels based on the current resource
configurations.
The previous counters are used to measure the times that the BSC radio resource managementmodule successfully searches the idle TCHFs or TCHHs in the channel resource table after
receiving the request for TCHFs or TCHHs. The number of the times includes the number of
successful preemptions of TCHFs or TCHHs. Then the BSC sends the CHAN ACT messageto the BTS to activate the TCH.
Trigger Point
In the assignment procedure, the previous counters are measured based on the types of the
assigned channels in either of the following cases:
The BSC successfully assigns or preempts available TCHs. The channels are successfully assigned after direct retry in the BSC.
Formula
None.
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14.8.4 Successful Channel Assignments in Internal Intra-CellHandover Procedure (SDCCH/TCHF/TCHH)
CounterTable 14-28 lists the counters in the Successful Channel Assignments in Internal Intra-Cell
Handover Procedure (SDCCH/TCHF/TCHH).
Table 14-28 Counters in the Successful Channel Assignments in Internal Intra-Cell HandoverProcedure (SDCCH/TCHF/TCHH)
Number Counter
1 R4110C: Successful Channel Assignments in Internal Intra-Cell Handover
Procedure (SDCCH)
2 R4117C: Successful Channel Assignments in Internal Intra-Cell HandoverProcedure (TCHF)
3 R4118C: Successful Channel Assignments in Internal Intra-Cell HandoverProcedure (TCHH)
Meaning
In the internal intra-cell handover procedure during which the MS is handed over betweendifferent channels in the service cell, the BSC determines the channel type of this handover
according to following items: Handover type
Supporting capability of the circuit pool where the A interface is located
Type of the channel that is seized by the call
Channel rate and channel type requested by the MSC during the initial establishment of
the call
The previous counters are measured after the BSC successfully assigns the channels.
Trigger Point
In the internal intra-cell handover procedure, the BSC successfully assigns the correspondingchannels after the request for the assignment of SDCCH, TCHF, or TCHH. In this case, the previous counters are measured based on the channel type.
Formula
None.
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14.8.5 Successful Channel Assignments in Incoming InternalInter-Cell Handover Procedure (SDCCH/TCHF/TCHH)
CounterTable 14-29 lists the counters in the Successful Channel Assignments in Incoming Internal
Inter-Cell Handover Procedure (SDCCH/TCHF/TCHH) measurement unit.
Table 14-29 Counters in the Successful Channel Assignments in Incoming Internal Inter-CellHandover Procedure (SDCCH/TCHF/TCHH) measurement unit
Number Counter
1 R4110D: Successful Channel Assignments in Incoming Internal Inter-Cell
Handover Procedure (SDCCH)
2 R4117D: Successful Channel Assignments in Incoming Internal Inter-CellHandover Procedure (TCHF)
3 R4118D: Successful Channel Assignments in Incoming Internal Inter-CellHandover Procedure (TCHH)
Meaning
In the incoming internal inter-cell handover procedure during which the MS is handed over between different channels in the service cell, the BSC determines the channel type of this
handover according to following items: Handover type
Supporting capability of the circuit pool where the A interface is located
Type of the channel that is seized by the call
Channel rate and channel type requested by the MSC during the initial establishment of
the call
The previous counters are measured after the BSC successfully assigns the corresponding
channels.
Trigger Point
In the incoming internal inter-cell handover procedure, the BSC successfully assigns the
corresponding channels after the request for the assignment of SDCCH, TCHF, or TCHH. In
this case, the previous counters are measured based on the channel type.
Formula
None.
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14.8.6 Successful Channel Assignments in Incoming ExternalInter-Cell Handover Procedure (SDCCH/ TCHF/TCHH)
CounterTable 14-30 lists the counters in the Successful Channel Assignments in Incoming External
Inter-Cell Handover Procedure (SDCCH/ TCHF/TCHH) measurement unit.
Table 14-30 Counters in the Successful Channel Assignments in Incoming External Inter-CellHandover Procedure (SDCCH/ TCHF/TCHH) measurement unit
Number Counter
1 R4110E: Successful Channel Assignments in Incoming External Inter-Cell
Handover Procedure (SDCCH)
2 R4117E: Successful Channel Assignments in Incoming External Inter-CellHandover Procedure (TCHF)
3 R4118E: Successful Channel Assignments in Incoming External Inter-CellHandover Procedure (TCHH)
Meaning
In the incoming external inter-cell handover procedure during which the MS is handed over between different channels in the service cell, the BSC determines the channel type of this
handover according to following items: Handover type
Supporting capability of the circuit pool where the A interface is located
Type of the channel that is seized by the call
Channel rate and channel type requested by the MSC during the initial establishment of
the call
The previous counters are measured after the BSC successfully assigns the corresponding
channels.
Trigger Point
In the incoming external inter-cell handover procedure, the service cell receives the HO REQ
message containing the request for the assignment of SDCCH, TCHF, or TCHH. After the
BSC successfully assigns the corresponding channels, the previous counters are measured based on the channel type.
Formula
None.
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14.8.7 Successful Channel Assignments (SDCCH)
Counter
CR4110: Successful Channel Assignments (SDCCH)
Meaning
After the BSC successfully assigns SDCCHs, this counter is measured in the following
procedures:
Immediate assignment
Internal intra-cell handover
Incoming internal inter-cell handover
Incoming external inter-cell handover
Trigger Point
None.
Formula
Successful Channel Assignments (SDCCH) =
[Successful Channel Assignments in Immediate Assignment Procedure (SDCCH)]+[Successful Channel Assignments in Internal Intra-Cell Handover Procedure (SDCCH)]+
[Successful Channel Assignments in Incoming Internal Inter-Cell Handover Procedure
(SDCCH)]+ [Successful Channel Assignments in Incoming External Inter-Cell HandoverProcedure (SDCCH)]
14.8.8 Successful Channel Assignments (TCHF)
Counter
CR4117: Successful Channel Assignments (TCHF)
Meaning
After the BSC successfully assigns TCHFs, this counter is measured in the following
procedures:
Immediate assignment
Assignment
Internal intra-cell handover
Incoming internal inter-cell handover
Incoming external inter-cell handover
Trigger Point
None.
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Formula
Successful Channel Assignments (TCHF) =
[Successful Channel Assignments in Immediate Assignment Procedure (TCHF)]+
[Successful Channel Assignments During Assignment (TCHF)]+
[Successful Channel Assignments in Internal Intra-Cell Handover Procedure (TCHF)]+[Successful Channel Assignments in Incoming Internal Inter-Cell Handover Procedure
(TCHF)]+
[Successful Channel Assignments in Incoming External Inter-Cell Handover Procedure
(TCHF)]
14.8.9 Successful Channel Assignments (TCHH)
Counter
CR4118: Successful Channel Assignments (TCHH)
Meaning
After the BSC successfully assigns TCHHs, this counter is measured in the following
procedures:
Immediate assignment
Assignment
Internal intra-cell handover
Incoming internal inter-cell handover Incoming external inter-cell handover
Trigger Point
None.
Formula
Successful Channel Assignments (TCHH) =
[Successful Channel Assignments in the Immediate Assignment Procedure (TCHH)]+
[Successful Channel Assignments in the Assignment Procedure (TCHH)]+
[Successful Channel Assignments in the Internal Intra-Cell Handover Procedure (TCHH)]+[Successful Channel Assignments in Incoming Internal Inter-Cell Handover Procedure
(TCHH)]+
[Successful Channel Assignments in Incoming External Inter-Cell Handover Procedure(TCHH)]
14.8.10 Successful Channel Assignments (TCH)
Counter
CR4119: Successful Channel Assignments (TCH)
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Meaning
After the BSC successfully assigns TCHs, this counter is measured in the following
procedures:
Immediate assignment Assignment
Internal intra-cell handover
Incoming internal inter-cell handover
Incoming external inter-cell handover
Trigger Point
None.
FormulaSuccessful Channel Assignments (TCH) =
[Successful Channel Assignments (TCHF)] + [Successful Channel Assignments (TCHH)]
14.9 Channel Assignment Failure Measurement per Cell
14.9.1 Overview
The Channel Assignment Failure Measurement per Cell measurement unit is used to measure
the failures when the BSC assigns SDCCHs, TCHFs, or TCHHs in the following procedures:
Immediate assignment
Assignment
Internal intra-cell handover
Incoming internal inter-cell handover
Incoming external inter-cell handover
Table 14-31 lists the classification of the counters in the Channel Assignment Failure
Measurement per Cell measurement unit.
Table 14-31 Classification of the counters in the Channel Assignment Failure Measurement perCell measurement unit
Counter Classification Section
Channel Assignment Failures (All Channels Busy or Channels Unconfigured)in Immediate Assignment Procedure (SDCCH)
14.9.2
Channel Assignment Failures (All Channels Busy or Channels Unconfigured)in Immediate Assignment Procedure (TCHF)
14.9.3
Channel Assignment Failures (All Channels Busy or Channels Unconfigured)in Immediate Assignment Procedure (TCHH)
14.9.4
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Counter Classification Section
Channel Assignment Failures (All Channels Busy or Channels Unconfigured)
in Assignment Procedure (TCHF/TCHH)
14.9.5
Channel Assignment Failures (All Channels Busy or Channels Unconfigured)in Internal Intra-Cell Handover Procedure (SDCCH)
14.9.6
Channel Assignment Failures (All Channels Busy or Channels Unconfigured)in Internal Intra-Cell Handover Procedure (TCHF/TCHH)
14.9.7
Channel Assignment Failures (All Channels Busy or Channels Unconfigured)
in Incoming Internal Inter-Cell Handover Procedure (SDCCH)
14.9.8
Channel Assignment Failures (All Channels Busy or Channels Unconfigured)in Incoming Internal Inter-Cell Handover Procedure (TCHF/TCHH)
14.9.9
Channel Assignment Failures (All Channels Busy or Channels Unconfigured)
in Incoming External Inter-Cell Handover Procedure (SDCCH)
14.9.10
Channel Assignment Failures (All Channels Busy or Channels Unconfigured)in Incoming External Inter-Cell Handover Procedure (TCHF/TCHH)
14.9.11
Channel Assignment Failures (All Channels Busy or Channels Unconfigured)
(SDCCH)
14.9.12
Channel Assignment Failures (All Channels Busy or Channels Unconfigured)(TCHF)
14.9.13
Channel Assignment Failures (All Channels Busy or Channels Unconfigured)(TCHH)
14.9.14
Channel Assignment Failures (All Channels Busy or Channels Unconfigured)(TCH)
14.9.15
14.9.2 Channel Assignment Failures (All Channels Busy orChannels Unconfigured) in Immediate Assignment Procedure(SDCCH)
Counter
R3120A: Channel Assignment Failures (All Channels Busy or Channels Unconfigured) in
Immediate Assignment Procedure (SDCCH)
Meaning
This counter is used to measure the channel assignment failures due to busy or unconfigured
channels when the BSC assigns the SDCCHs in the immediate assignment procedure.
Trigger Point
In the immediate assignment procedure, this counter is measured in either of the following
cases:
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The assignment fails when the SDCCH assignment is requested in the followingmechanisms:
− SDCCH preferred, and then TCHF
− SDCCH preferred, and then TCHF or TCHH
− TCHF preferred, and then SDCCH
− TCHF or TCHH preferred, and then SDCCH
The preferential selection of SDCCH succeeds but the channel is not SDCCH.
Formula
None.
14.9.3 Channel Assignment Failures (All Channels Busy orChannels Unconfigured) in Immediate Assignment Procedure
(TCHF)
Counter
R3127A: Channel Assignment Failures (All Channels Busy or Channels Unconfigured) inImmediate Assignment Procedure (TCHF)
Meaning
This counter is used to measure the channel assignment failures due to busy or unconfiguredchannels when the BSC assigns the TCHFs in the immediate assignment procedure.
Trigger Point
In the immediate assignment procedure, this counter is measured in either of the followingcases:
The assignment fails when the TCHF assignment is requested in the followingmechanisms:
− SDCCH preferred, and then TCHF
− SDCCH preferred, and then TCHF or TCHH
− TCHF preferred, and then SDCCH
− TCHF or TCHH preferred, and then SDCCH
The preferential selection of TCHF succeeds but the channel is not TCHF.
Formula
None.
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14.9.4 Channel Assignment Failures (All Channels Busy orChannels Unconfigured) in Immediate Assignment Procedure(TCHH)
Counter
R3128A: Channel Assignment Failures (All Channels Busy or Channels Unconfigured) inImmediate Assignment Procedure (TCHH)
Meaning
This counter is used to measure the channel assignment failures due to busy or unconfiguredchannels when the BSC assigns the TCHHs in the immediate assignment procedure.
Trigger PointIn the immediate assignment procedure, this counter is measured in either of the followingcases:
The assignment fails when the assignment of TCHH, TCHF or TCHH is requested in the
following mechanisms:
− SDCCH preferred, and then TCHF or TCHH
− TCHF or TCHH preferred, and then SDCCH
The preferential selection of TCHH succeeds but the channel is not TCHH.
Formula
None.
14.9.5 Channel Assignment Failures (All Channels Busy orChannels Unconfigured) in Assignment Procedure (TCHF/TCHH)
Counter
Table 14-32 lists the counters in the Channel Assignment Failures (All Channels Busy or
Channels Unconfigured) in Assignment Procedure (TCHF/TCHH) measurement unit.
Table 14-32 Counters in the Channel Assignment Failures (All Channels Busy or ChannelsUnconfigured) in Assignment Procedure (TCHF/TCHH) measurement unit
Number Counter
1 R3127B: Channel Assignment Failures (All Channels Busy or Channels
Unconfigured) in Assignment Procedure (TCHF)
2 R3128B: Channel Assignment Failures (All Channels Busy or Channels
Unconfigured) in Assignment Procedure (TCHH)
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Meaning
The previous counters are used to measure the channel assignment failures due to busy or
unconfigured channels when the BSC assigns the TCHFs or TCHHs in the assignment
procedure.
Trigger Point
In the assignment procedure, this counter is measured in either of the following cases:
The assignment fails when the assignment of TCHF or TCHH is requested in thefollowing mechanisms:
− TCHF preferred
− TCHH preferred
The assignment succeeds but the channel is not the requested one.
Formula
None.
14.9.6 Channel Assignment Failures (All Channels Busy orChannels Unconfigured) in Internal Intra-Cell HandoverProcedure (SDCCH)
Counter
R3120C: Channel Assignment Failures (All Channels Busy or Channels Unconfigured) in
Internal Intra-Cell Handover Procedure (SDCCH)
Meaning
This counter is used to measure the channel assignment failures due to busy or unconfigured
channels when the BSC assigns the SDCCHs or TCHHs in the internal intra-cell handover procedure.
Trigger Point
In the internal intra-cell handover procedure, this counter is measured in either of the
following cases: The assignment fails when the SDCCH assignment is requested in the following
mechanisms:
− SDCCH preferred, and then TCHF
− TCHF preferred, and then SDCCH
The preferential selection of SDCCH succeeds but the channel is not SDCCH.
Formula
None.
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14.9.7 Channel Assignment Failures (All Channels Busy orChannels Unconfigured) in Internal Intra-Cell HandoverProcedure (TCHF/TCHH)
Counter
Table 14-33 lists the counters in the Channel Assignment Failures (All Channels Busy orChannels Unconfigured) in Internal Intra-Cell Handover Procedure (TCHF/TCHH)
measurement unit.
Table 14-33 Counters in the Channel Assignment Failures (All Channels Busy or ChannelsUnconfigured) in Internal Intra-Cell Handover Procedure (TCHF/TCHH) measurement unit
Number Counter
1 R3127C: Channel Assignment Failures (All Channels Busy or ChannelsUnconfigured) in Internal Intra-Cell Handover Procedure (TCHF)
2 R3128C: Channel Assignment Failures (All Channels Busy or ChannelsUnconfigured) in Internal Intra-Cell Handover Procedure (TCHH)
Meaning
The previous counters are used to measure the channel assignment failures due to busy or
unconfigured channels when the BSC assigns the TCHFs or TCHHs in the internal intra-cellhandover procedure.
Trigger Point
In the internal intra-cell handover procedure, this counter is measured in either of thefollowing cases:
The assignment fails when the assignment of TCHF, TCHH, TCHF or TCHH isrequested in the following mechanisms:
− TCHF preferred
− TCHH preferred
The assignment succeeds but the channel is not the requested one.
Formula
None.
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14.9.8 Channel Assignment Failures (All Channels Busy orChannels Unconfigured) in Incoming Internal Inter-CellHandover Procedure (SDCCH)
Counter
R3120D: Channel Assignment Failures (All Channels Busy or Channels Unconfigured) inIncoming Internal Inter-Cell Handover Procedure (SDCCH)
Meaning
This counter is used to measure the channel assignment failures due to busy or unconfiguredchannels when the BSC assigns the SDCCHs in the incoming internal inter-cell handover
procedure.
Trigger Point
In the incoming internal inter-cell handover procedure, this counter is measured in either of
the following cases:
The assignment fails when the SDCCH assignment is requested in the followingmechanisms:
− SDCCH preferred, and then TCHF
− TCHF preferred, and then SDCCH
The preferential selection of SDCCH succeeds but the channel is not SDCCH.
Formula
None.
14.9.9 Channel Assignment Failures (All Channels Busy orChannels Unconfigured) in Incoming Internal Inter-CellHandover Procedure (TCHF/ TCHH)
Counter
Table 14-34 lists the counters in the Channel Assignment Failures (All Channels Busy or
Channels Unconfigured) in Incoming Internal Inter-Cell Handover Procedure (TCHF/ TCHH)
measurement unit.
Table 14-34 Counters in the Channel Assignment Failures (All Channels Busy or Channels
Unconfigured) in Incoming Internal Inter-Cell Handover Procedure (TCHF/ TCHH) measurementunit
Number Counter
1 R3127D: Channel Assignment Failures (All Channels Busy or ChannelsUnconfigured) in Incoming Internal Inter-Cell Handover Procedure (TCHF)
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Number Counter
2 R3128D: Channel Assignment Failures (All Channels Busy or Channels
Unconfigured) in Incoming Internal Inter-Cell Handover Procedure (TCHH)
Meaning
The previous counters are used to measure the channel assignment failures due to busy or
unconfigured channels when the BSC assigns the TCHFs or TCHHs in the incoming internal
inter-cell handover procedure.
Trigger Point
In the incoming internal inter-cell handover procedure, this counter is measured in either of
the following cases: The assignment fails when the assignment of TCHF, TCHH, TCHF or TCHH is
requested in the following mechanisms:
− TCHF preferred
− TCHH preferred
The assignment succeeds but the channel is not the requested one.
Formula
None.
14.9.10 Channel Assignment Failures (All Channels Busy orChannels Unconfigured) in Incoming External Inter-CellHandover Procedure (SDCCH)
Counter
R3120E: Channel Assignment Failures (All Channels Busy or Channels Unconfigured) in
Incoming External Inter-Cell Handover Procedure (SDCCH)
Meaning
This counter is used to measure the channel assignment failures due to busy or unconfigured
channels when the BSC assigns the SDCCHs in the incoming external inter-cell handover
procedure.
Trigger Point
In the incoming external inter-cell handover procedure, this counter is measured in either of
the following cases:
The assignment fails when the SDCCH assignment is requested in the followingmechanisms:
− SDCCH preferred, and then TCHF
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− TCHF preferred, and then SDCCH
The preferential selection of SDCCH succeeds but the channel is not SDCCH.
Formula
None.
14.9.11 Channel Assignment Failures (All Channels Busy orChannels Unconfigured) in Incoming External Inter-CellHandover Procedure (TCHF/ TCHH)
Counter
Table 14-35 lists the counters in the Channel Assignment Failures (All Channels Busy or
Channels Unconfigured) in Incoming External Inter-Cell Handover Procedure (TCHF/ TCHH)
measurement unit.
Table 14-35 Counters in the Channel Assignment Failures (All Channels Busy or Channels
Unconfigured) in Incoming External Inter-Cell Handover Procedure (TCHF/ TCHH)measurement unit
Number Counter
1 R3127E: Channel Assignment Failures (All Channels Busy or ChannelsUnconfigured) in Incoming External Inter-Cell Handover Procedure (TCHF)
2 R3128E: Channel Assignment Failures (All Channels Busy or Channels
Unconfigured) in Incoming External Inter-Cell Handover Procedure (TCHH)
Meaning
The previous counters are used to measure the times that there are no corresponding channels
available for assignment in the incoming external inter-cell handover procedure when therequested channel type is of the following:
TCHF or TCHH
Channel whose preferential selection is TCHF or TCHH
Trigger Point
In the incoming external inter-cell handover procedure, this counter is measured in either of
the following cases:
The assignment fails when the requested channel type is of the following:
− TCHF or TCHH
− Channel whose type is related to TCHF or TCHH
− Channel whose preferential selection is TCHF or TCHH
The assignment succeeds but the channel is not the requested one.
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Formula
None.
14.9.12 Channel Assignment Failures (All Channels Busy orChannels Unconfigured) (SDCCH)
Counter
CR3120: Channel Assignment Failures (All Channels Busy or Channels Unconfigured)
(SDCCH)
Meaning
This counter is used to measure the channel assignment failures due to busy or unconfigured
channels when the BSC assigns the SDCCHs in the following procedures:
Immediate assignment
Internal intra-cell handover
Incoming internal inter-cell handover
Incoming external inter-cell handover
Trigger Point
None.
Formula
Channel Assignment Failures (All Channels Busy or Channels Unconfigured) (SDCCH) =
[Channel Assignment Failures (All Channels Busy or Channels Unconfigured) in Immediate
Assignment Procedure (SDCCH)] +
[Channel Assignment Failures (All Channels Busy or Channels Unconfigured) in InternalIntra-Cell Handover Procedure (SDCCH)] +
[Channel Assignment Failures (All Channels Busy or Channels Unconfigured) in IncomingInternal Inter-Cell Handover Procedure (SDCCH)] +
[Channel Assignment Failures (All Channels Busy or Channels Unconfigured) in Incoming
External Inter-Cell Handover Procedure (SDCCH)]
14.9.13 Channel Assignment Failures (All Channels Busy orChannels Unconfigured) (TCHF)
Counter
CR3127: Channel Assignment Failures (All Channels Busy or Channels Unconfigured)(TCHF)
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Meaning
This counter is used to measure the channel assignment failures due to busy or unconfigured
channels when the BSC assigns the TCHFs in the following procedures:
Immediate assignment assignment
Internal intra-cell handover
Incoming internal inter-cell handover
Incoming external inter-cell handover
Trigger Point
None.
FormulaChannel Assignment Failures (All Channels Busy or Channels Unconfigured) (TCHF) =
[Channel Assignment Failures (All Channels Busy or Channels Unconfigured) in ImmediateAssignment Procedure (TCHF)] +
[Channel Assignment Failures (All Channels Busy or Channels Unconfigured) in Assignment
Procedure (TCHF)] +
[Channel Assignment Failures (All Channels Busy or Channels Unconfigured) in InternalIntra-Cell Handover Procedure (TCHF)] +
[Channel Assignment Failures (All Channels Busy or Channels Unconfigured) in Incoming
Internal Inter-Cell Handover Procedure (TCHF)] +[Channel Assignment Failures (All Channels Busy or Channels Unconfigured) in IncomingExternal Inter-Cell Handover Procedure (TCHF)]
14.9.14 Channel Assignment Failures (All Channels Busy orChannels Unconfigured) (TCHH)
Counter
CR3128: Channel Assignment Failures (All Channels Busy or Channels Unconfigured)
(TCHH)
Meaning
This counter is used to measure the channel assignment failures due to busy or unconfigured
channels when the BSC assigns the TCHHs in the following procedures:
Immediate assignment
Assignment
Internal intra-cell handover
Incoming internal inter-cell handover
Incoming external inter-cell handover
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Trigger Point
None.
FormulaChannel Assignment Failures (All Channels Busy or Channels Unconfigured) (TCHH) =
[Channel Assignment Failures (All Channels Busy or Channels Unconfigured) in Immediate
Assignment Procedure (TCHH)] +
[Channel Assignment Failures (All Channels Busy or Channels Unconfigured) in AssignmentProcedure (TCHH)] +
[Channel Assignment Failures (All Channels Busy or Channels Unconfigured) in Internal
Intra-Cell Handover Procedure (TCHH)] +
[Channel Assignment Failures (All Channels Busy or Channels Unconfigured) in Incoming
Internal Inter-Cell Handover Procedure (TCHH)] +
[Channel Assignment Failures (All Channels Busy or Channels Unconfigured) in IncomingExternal Inter-Cell Handover Procedure (TCHH)]
14.9.15 Channel Assignment Failures (All Channels Busy orChannels Unconfigured) (TCH)
Counter
CR3129: Channel Assignment Failures (All Channels Busy or Channels Unconfigured) (TCH)
Meaning
This counter is used to measure the channel assignment failures due to busy or unconfigured
channels when the BSC assigns the TCHs in the following procedures:
Immediate assignment
Assignment
Internal intra-cell handover
Incoming internal inter-cell handover
Incoming external inter-cell handover
Trigger Point
None.
Formula
Channel Assignment Failures (All Channels Busy or Channels Unconfigured) (TCH) =
[Channel Assignment Failures (All Channels Busy or Channels Unconfigured) (TCHF)] +
[Channel Assignment Failures (All Channels Busy or Channels Unconfigured) (TCHH)]
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14.10 Channel Assignment Concentric Cell Measurementper Cell
14.10.1 OverviewWhen the concentric cell function is used, the TRXs of the overlaid subcell and underlaidsubcell should be properly configured to achieve the following results:
In the wide coverage area, the underlaid subcell provides remote coverage and theoverlaid subcell bears the traffic.
In the dense multiplexing area, the underlaid subcell uses the less multiplexed TRXfrequency (BCCH) and the overlaid subcell uses the dense multiplexed TRX frequency.
With scientific configuration of the parameters related to overlaid and underlaid power, thesystem interference can be lowered to the greatest extent.
Channel Assignment Concentric Cell Measurement per Cell is used to measure the counterssuch as channel assignment requests and overflows. These counters help to analyze the
configuration of channel resources and the settings of handover.
Table 14-36 lists the counter classification of Channel Assignment Concentric CellMeasurement per Cell.
Table 14-36 Counter classification of Channel Assignment Concentric Cell Measurement per Cell
Counter Classification Section
Channel Assignment Requests of Concentric Cell 14.10.2
TCH Assignment Requests of Concentric Cell 14.10.3
Channel Assignment Requests of Concentric Cell in Incoming Internal Inter-Cell Handover Procedure (TCH)
14.10.4
Channel Assignment Requests in Incoming External Inter-Cell HandoverProcedure (TCH)
14.10.5
Channel Assignment Overflows (TCH) (Underlaid Subcell Preferred orOverlaid Subcell Preferred)
14.10.6
Channel Assignment Overflows in Concentric Cell in Incoming Internal Inter-
Cell Handover Procedure (TCH)
14.10.7
Channel Assignment Overflows in Concentric Cell in Incoming External Inter-Cell Handover Procedure (TCH)
14.10.8
Channel Assignment Overflows in Concentric Cell (TCH) 14.10.9
Channel Assignment Overflows in Concentric Cell (SDCCH) 14.10.10
Channel Assignment Overflows in Concentric Cell (TCHF) 14.10.11
Channel Assignment Overflows in Concentric Cell (TCHH) 14.10.12
Failed Handovers from Underlaid Subcell to Overlaid Subcell due to Busy
Channels in Overlaid Subcell
14.10.13
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Counter Classification Section
Failed Handovers from Overlaid Subcell to Underlaid Subcell due to Busy
Channels in Underlaid Subcell
14.10.14
14.10.2 Channel Assignment Requests of Concentric Cell
Counter
Table 14-37 lists the counters of Channel Assignment Requests of Concentric Cell.
Table 14-37 Channel Assignment Requests of Concentric Cell
Number Counter
1 R3200: Channel Assignment Requests (Underlaid Subcell Only)
2 R3201: Channel Assignment Requests (Overlaid Subcell Only)
3 R3202: Channel Assignment Requests (Underlaid Subcell Preferred)
4 R3203: Channel Assignment Requests (Overlaid Subcell Preferred)
Meaning
The counters measure the number of channel assignment requests of the concentric cell. Themeasurement is based on the requirement for the attributes of the concentric cell.
The attributes consist of the following:
Underlaid subcell only
Overlaid subcell only
Underlaid subcell preferred
Overlaid subcell preferred
Trigger Point
The measurement is triggered when a concentric cell requests for a channel. The measurementis based on requirement for the attributes of the concentric cell.
Formula
None.
14.10.3 TCH Assignment Requests of Concentric Cell
Counter
Table 14-38 lists the counters of TCH Assignment Requests of Concentric Cell.
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Table 14-38 Counters of TCH Assignment Requests of Concentric Cell
Number Counter
1 R3202B: TCH Assignment Requests (Underlaid Subcell Preferred)
2 R3203B: TCH Assignment Requests (Overlaid Subcell Preferred)
Meaning
The counters measure the number of TCH assignment requests of a concentric cell in the
assignment procedure. The measurement is based on the requirement for the attributes of theconcentric cell.
The counters show the utilization of the underlaid subcell and overlaid subcell of a concentriccell. If the ratio of assignment overflows to assignment requests is high, the underlaid subcell
or the overlaid subcell is congested. The traffic load of the underlaid subcell and that of theoverlaid subcell should be regulated.
Trigger Point
In the assignment procedure, the measurement is triggered when a concentric cell requests fora TCH. The measurement is based on the requirement for the attributes of the concentric cell.
Formula
None.
14.10.4 Assignment Requests of Concentric Cell in IncomingInternal Inter-Cell Handover Procedure (TCH)
Counter
Table 14-39 lists the counters of Channel Assignment Requests of Concentric Cell in
Incoming Internal Inter-Cell Handover Procedure (TCH).
Table 14-39 Counters of Channel Assignment Requests of Concentric Cell in Incoming InternalInter-Cell Handover Procedure (TCH )
Number Counter
1 R3202D: Channel Assignment Requests in Incoming Internal Inter-CellHandover Procedure (TCH) (Underlaid Subcell Preferred)
2 R3203D: Channel Assignment Requests in Incoming Internal Inter-CellHandover Procedure (TCH) (Overlaid Subcell Preferred)
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Meaning
The counters measure the number of TCH assignment requests of a concentric cell in the
incoming internal inter-cell handover procedure. The measurement is based on the
requirement for the attributes of the concentric cell.
The counters show the utilization of the underlaid subcell and overlaid subcell of a concentriccell. If the ratio of assignment overflows to assignment requests is high, the underlaid subcell
or the overlaid subcell is congested. The traffic load of the underlaid subcell and that of theoverlaid subcell should be regulated.
Trigger Point
In the incoming internal inter-cell handover procedure, the measurement is triggered when a
concentric cell requests for a TCH. The measurement is based on the requirement for the
attributes of the concentric cell.
Formula
None.
14.10.5 Channel Assignment Requests in Incoming External Inter-Cell Handover Procedure (TCH)
Counter
Table 14-40 lists the counters of Channel Assignment Requests in Incoming External Inter-Cell Handover Procedure (TCH).
Table 14-40 Counters of Channel Assignment Requests in Incoming External Inter-Cell HandoverProcedure (TCH)
Number Counter
1 R3202E: Channel Assignment Requests in Incoming External Inter-Cell
Handover Procedure (TCH) (Underlaid Subcell Preferred)
2 R3203E: Channel Assignment Requests in Incoming External Inter-CellHandover Procedure (TCH) (Overlaid Subcell Preferred)
Meaning
The counters measure the number of TCH assignment requests of a concentric cell in theincoming external inter-cell handover procedure. The measurement is based on the
requirement for the attributes of the concentric cell.
The counters show the utilization of the underlaid subcell and overlaid subcell of a concentriccell. If the ratio of assignment overflows to assignment requests is high, the underlaid subcell
or the overlaid subcell is congested. The traffic load of the underlaid subcell and that of theoverlaid subcell should be regulated.
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Trigger Point
In the incoming external inter-cell handover procedure, the measurement is triggered when a
concentric cell requests for a TCH. The measurement is based on the requirement for the
attributes of the concentric cell.
Formula
None.
14.10.6 Channel Assignment Overflows (TCH) (Underlaid SubcellPreferred or Overlaid Subcell Preferred)
Counter
Table 14-41 lists the counters of Channel Assignment Overflows (TCH) (Underlaid Subcell
Preferred or Overlaid Subcell Preferred).
Table 14-41 Counters of Channel Assignment Overflows (TCH) (Underlaid Subcell Preferred orOverlaid Subcell Preferred)
Number Counter
1 R3222B: Channel Assignment Overflows (TCH) (Underlaid Subcell
Preferred)
2 R3223B: Channel Assignment Overflows (TCH) (Overlaid Subcell Preferred)
Meaning
In the TCH assignment procedure, the counters measure the number of TCH assignment
overflows when the assignment fails or the channel with the concentric attribute inconsistentwith the requirement is assigned. The measurement is based on the requirement for the
attributes of the concentric cell.
Trigger Point
In the TCH assignment procedure, the measurement is triggered when the assignment fails or
when the channel with the concentric attributes inconsistent with the requirement is assigned.The measurement is based on the requirement for the attributes of the concentric cell.
Formula
None.
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14.10.7 Channel Assignment Overflows in Concentric Cell inIncoming Internal Inter-Cell Handover Procedure (TCH)
CounterTable 14-42 lists the counters of Channel Assignment Overflows in Concentric Cell in
Incoming Internal Inter-Cell Handover Procedure (TCH).
Table 14-42 Counters of Channel Assignment Overflows in Concentric Cell in Incoming InternalInter-Cell Handover Procedure (TCH)
Number Counter
1 R3222D: Channel Assignment Overflows in Incoming Internal Inter-Cell
Handover Procedure (TCH) (Underlaid Subcell Preferred)
2 R3223D: Channel Assignment Overflows in Incoming Internal Inter-CellHandover Procedure (TCH) (Overlaid Subcell Preferred)
Meaning
In the incoming internal inter-cell handover procedure, the counters measure the number ofTCH assignment overflows when the assignment fails or the channel with the concentric
attribute inconsistent with the requirement is assigned. The measurement is based on therequirement for the attributes of the concentric cell.
Trigger Point
In the incoming internal inter-cell handover procedure, the measurement is triggered when the
assignment fails or when the channel with the concentric attributes inconsistent with therequirement is assigned. The measurement is based on the requirement for the attributes of the
concentric cell.
Formula
None.
14.10.8 Channel Assignment Overflows in Concentric Cell inIncoming External Inter-Cell Handover Procedure (TCH)
Counter
Table 14-43 lists the counters of Channel Assignment Overflows in Concentric Cell in
Incoming External Inter-Cell Handover Procedure (TCH).
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Table 14-43 Counters of Channel Assignment Overflows in Concentric Cell in Incoming ExternalInter-Cell Handover Procedure (TCH)
Number Counter
1 R3222E: Channel Assignment Overflows in Incoming External Inter-CellHandover Procedure (TCH) (Underlaid Subcell Preferred)
2 R3223E: Channel Assignment Overflows in Incoming External Inter-CellHandover Procedure (TCH) (Overlaid Subcell Preferred)
Meaning
In the incoming external inter-cell handover procedure, the counters measure the number of
TCH assignment overflows when the assignment fails or the channel with the concentricattribute inconsistent with the requirement is assigned. The measurement is based on therequirement for the attributes of the concentric cell.
Trigger Point
In the incoming external inter-cell handover procedure, the measurement is triggered whenthe assignment fails or when the channel with the concentric attributes inconsistent with the
requirement is assigned. The measurement is based on the requirement for the attributes of the
concentric cell.
Formula
None.
14.10.9 Channel Assignment Overflows in Concentric Cell (TCH)
Counter
Table 14-44 lists the counters of Channel Assignment Overflows in Concentric Cell (TCH).
Table 14-44 Counters of Channel Assignment Overflows in Concentric Cell (TCH)
Number Counter
1 R3225J: Channel Assignment Overflows in Underlaid Subcell (TCH)
2 R3224J: Channel Assignment Overflows in Overlaid Subcell (TCH)
Meaning
When the BSC needs to assign an MS a TCH in the assignment, immediate assignment,
internal handover, or external handover procedure, it fills the concentric attribute in thechannel request based on the data already configured, and then initiates the channel
assignment procedure. The counters measure the number of times the underlaid subcell or the
overlaid subcell has no idle TCH to be assigned.
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Trigger Point
In the TCH assignment, the measurement is triggered when the underlaid subcell or the
overlaid subcell has no idle TCH to be assigned.
Formula
None.
14.10.10 Channel Assignment Overflows in Concentric Cell(SDCCH)
Counter
Table 14-45 lists the counters of Channel Assignment Overflows in Concentric Cell (SDCCH).
Table 14-45 Counters of Channel Assignment Overflows in Concentric Cell (SDCCH)
Number Counter
1 R3225G: Channel Assignment Overflows in Underlaid Subcell (SDCCH)
2 R3224G: Channel Assignment Overflows in Overlaid Subcell (SDCCH)
Meaning
When the BSC receives an SDCCH request, it fills the concentric attribute in the channelrequest based on the data already configured, and then initiates the channel assignment procedure. The counters measure the number of times the underlaid subcell or the overlaid
subcell has no idle SDCCH to be assigned.
Trigger Point
In the SDCCH assignment, the measurement is triggered when the underlaid subcell or the
overlaid subcell has no idle SDCCH to be assigned.
Formula
None.
14.10.11 Channel Assignment Overflows in Concentric Cell(TCHF)
Counter
Table 14-46 lists the counters of Channel Assignment Overflows in Concentric Cell (TCHF).
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Table 14-46 Counters of Channel Assignment Overflows in Concentric Cell (TCHF)
Number Counter
1 R3225H: Channel Assignment Overflows in Underlaid Subcell (TCHF)
2 R3224H: Channel Assignment Overflows in Overlaid Subcell (TCHF)
Meaning
If a concentric cell requests for a TCHF in the underlaid subcell or the overlaid subcell, but
the assigned channel does not meet the requirement or the assignment fails, the BSC measuresthe number of channel assignment overflows under the related conditions.
Trigger Point
If a concentric cell requests for a TCHF in the underlaid subcell or the overlaid subcell, themeasurement is triggered when the assigned channel does not meet the requirement or when
the assignment fails.
Formula
None.
14.10.12 Channel Assignment Overflows in Concentric Cell(TCHH)
Counter
Table 14-47 lists the counters of Channel Assignment Overflows in Concentric Cell (TCHH).
Table 14-47 Counters of Channel Assignment Overflows in Concentric Cell (TCHH)
Number Counter
1 R3225I: Channel Assignment Overflows in Underlaid Subcell (TCHH)
2 R3224I: Channel Assignment Overflows in Overlaid Subcell (TCHH)
Meaning
If a concentric cell requests for a TCHH in the underlaid subcell or the overlaid subcell, but
the assigned channel does not meet the requirement or the assignment fails, the BSC measuresthe number of channel assignment overflows under the related conditions.
Trigger Point
The measurement is triggered when the assigned channel does not meet the requirement orwhen the assignment fails.
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Formula
None.
14.10.13 Failed Handovers from Underlaid Subcell to OverlaidSubcell due to Busy Channels in Overlaid Subcell
Counter
R3224K: Failed Handovers from Underlaid Subcell to Overlaid Subcell due to Busy Channels
in Overlaid Subcell
Meaning
In the handover from the underlaid subcell to the overlaid subcell, the counter measures the
number of failed handovers because the overlaid subcell has no idle channel available.
The counter helps to determine whether the configuration of the TCHs in the overlaid subcellis appropriate or not. If the result of this measurement is too high, the traffic load of the
underlaid subcell and that of the overlaid subcell should be regulated.
Trigger Point
In the handover from the underlaid subcell to the overlaid subcell, the measurement is
triggered when the BSC detects that the overlaid subcell has no channel to be assigned.
Formula
None.
14.10.14 Failed Handovers from Overlaid Subcell to UnderlaidSubcell due to Busy Channels in Underlaid Subcell
Counter
R3225K: Failed Handovers from Overlaid Subcell to Underlaid Subcell due to Busy Channels
in Underlaid Subcell
MeaningIn the handover from the overlaid subcell to the underlaid subcell, the counter measures the
number of failed handovers because the underlaid subcell has no idle channel available. If the
result of this measurement is too high, the traffic load of the underlaid subcell and that of the
overlaid subcell should be regulated.
Trigger Point
In the handover from the overlaid subcell to the underlaid subcell, the measurement istriggered when the BSC detects that the underlaid subcell has no channel to be assigned.
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Formula
None.
14.11 Channel Assignment Queue Measurement per Cell
14.11.1 Overview
Channel Assignment Queue Measurement per Cell is used to measure the queue related
counters in the Channel Assignment procedure.
Table 14-48 lists the measurement units of Channel Assignment Queue Measurement per Cell.
Table 14-48 Measurement units of Channel Assignment Queue Measurement per Cell
Counter Classification Section
Maximum Queue Length 14.11.2
Total Queue Length 14.11.3
Sampled Queuings 14.11.4
Total Queuing Duration 14.11.5
Queuings in Channel Assignment Procedure 14.11.6
Mean Queue Length 14.11.7
Mean Queuing Duration 14.11.8
Failed Queuings 14.11.9
14.11.2 Maximum Queue Length
Counter
R3130: Maximum Queue Length
Meaning
This counter is used to measure the maximum length of the queue in a cell. It shows the busy
state of the services in a cell in busy hours. The BSC compares the peak values of queuesduring channel assignment at the sampling point and then records the values.
Trigger Point
The BSC periodically obtains the length of the queue in the measured cell at the sampling
point in a granularity period. If the obtained length is greater than the latest maximum queue
length saved in the same granularity period, the BSC uses the obtained value to overwrite thelatest value.
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Formula
None.
14.11.3 Total Queue LengthCounter
R3131: Total Queue Length
Meaning
This counter is used to measure the accumulated length of the queue in the channel
assignment procedure in a BSC cell in a granularity period.
Trigger Point
The BSC accumulates all the sampled values in a granularity period.
Formula
None.
14.11.4 Sampled Queuings
Counter
R3132: Sampled Queuings
Meaning
This counter is used to measure the number of attempts to measure the length of a queue in aBSC cell in a granularity period.
Trigger Point
This counter is measured once the BSC measures the length of a queue at the sampling pointin the cell.
Formula None.
14.11.5 Total Queuing Duration
Counter
R3133: Total Queuing Duration
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Meaning
This counter is used to measure the accumulated queuing duration (in seconds) of a call in a
granularity period.
Trigger Point
The BSC accumulates all the sampled values in a granularity period.
Formula
None.
14.11.6 Channel Assignment Queue Measurement
Counter
Table 14-49 lists the counters of Channel Assignment Queue Measurement.
Table 14-49 Counters of Channel Assignment Queue Measurement
Number Counter
1 R3134: Failed Queuing Attempts due to Queue Overflow
2 R3135: Queuing Requests
3 R3136: Failed Queuings (Preemption)
4 R3137: Failed Queuings (Queuing Timer Expired)
5 R3138: Failed Queuings (Dynamic Adjustment Timed Out)
Meaning
In the assignment procedure or incoming-BSC handover procedure, if the MSC requests a
TCH, but the BSC detects that there is no idle TCH during channel assignment, and the BSCsupports queuing, then the calls shall be queued. However, the number of calls to be queued
by the BSC is limited. If the queue is full and the queuing fails, the BSC measures counterR3134: Failed Queuing Attempts due to Queue Overflow.
In the assignment procedure or incoming-BSC handover procedure, if the MSC requests a
TCH, but the BSC detects that there is no idle TCH during channel assignment, and the BSCsupports queuing, then the calls shall be queued. In this case, the BSC measures counterR3135: Queuing Requests.
In the assignment procedure or incoming-BSC handover procedure, if the MSC requests aTCH, but the BSC detects that there is no idle TCH during channel assignment. If the calls
support pre-emption and the BSC supports pre-emption, then the BSC shall pre-empt TCHs.If the pre-emption is successful and the BSC supports queuing, then the BSC initiates a
queuing procedure and starts a timer to wait for an available TCH. If there is no idle TCHupon the timer expiry, the BSC measures counter R3136: Failed Queuings (Preemption).
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In the assignment procedure or incoming-BSC handover procedure, if the MSC requests aTCH, but the BSC detects that there is no idle TCH during channel assignment. If the BSCdoes not initiate a pre-emption procedure or dynamic channel conversion procedure but the
BSC supports queuing, then the calls shall be queued for a TCH. At the same time, the BSCstarts a timer to wait for an idle TCH. If there is no idle TCH upon the timer expiry, the BSC
measures counter R3137: Failed Queuings (Queuing Timer Expired).
In the assignment procedure or incoming-BSC handover procedure, the BSC initiates adynamic channel conversion procedure if:
The MSC requests a TCHF or TCHF, but the BSC detects that there is no idle TCHF orTCHF during the channel assignment
The BSC supports dynamic channel conversion and the conditions for dynamic channelconversion are met
If the BSC supports queuing, the BSC initiates a queuing procedure and starts a timer to wait
for an idle TCHF or TCHH.
If there is no idle TCHF or TCHH upon the timer expiry, the BSC measures counter R3138:Failed Queuings (Dynamic Adjustment Timed Out).
Trigger Point
Counter R3134 is measured when the queue is full in the assignment procedure or incoming-
BSC handover procedure.
Counter R3135 is measured when the BSC initiates a queuing for a TCH in the assignment procedure or incoming-BSC handover procedure.
Counter R3136 is measured when there is no idle TCH upon the timer expiry even if the BSC
initiates queuing and pre-emption procedures in the assignment procedure or incoming-BSC
handover procedure.
Counter R3136 is measured in the assignment procedure or incoming-BSC handover
procedure in either of the following cases:
The BSC does not initiate any pre-emption procedure or dynamic channel conversion procedure.
The BSC initiates a queuing procedure but there is no idle TCH upon the timer expiry.
Formula
None.
14.11.7 Mean Queue Length
Counter
AR3131: Mean Queue Length
Meaning
This counter is used to measure the mean length of a queue in a BSC cell in a granularity
period.
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Trigger Point
None.
FormulaMean Queue Length = [Total Queue Length]/[Sampled Queuings]
14.11.8 Mean Queuing Duration
Counter
AR3133: Mean Queuing Duration
Meaning
This counter is used to measure the mean time of a call to queue for a TCH in a BSC cell in agranularity period.
Trigger Point
None.
Formula
Mean Queuing Duration = [Total Queuing Duration]/[Queuing Requests]
14.11.9 Failed Queuings
Counter
CR313C: Failed Queuings
Meaning
This counter is used to measure the number of failed queuings due to various causes in a BSC
cell in a granularity period.
Trigger Point
None.
Formula
Failed Queuings =
[Failed Queuings (Pre-emption)] +
[Failed Queuings (Queuing Timer Expired)] +
[Failed Queuings (Dynamic Adjustment Timed Out)]