b11 s01m02 2 indicators overview
TRANSCRIPT
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Section 1 Module 2 Page 1
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Module 2Indicators Overview
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Section 1B11 GSM QoS Monitoring
GSM B11BSS B11 GSM Quality of Service & Traffic Load Monitoring
TMO18096 D0 SG DEN I1.0 Issue 1
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First edition B11 MR1Xavier Pourtauborde29-June-201001
RemarksAuthorDateEdition
Document History
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Module Objectives
Upon completion of this module, you should be able to:
Explain what is a detailed indicator and what are the different classifications of the detailed indicators provided by the Alcatel-Lucent BSS
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Module Objectives [cont.]
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Table of Contents
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1 Indicators Reference Name 7Description 8
2 Indicators Classification 9BSS Counter Collection Mechanism 10BSS Performance Measurement Types 11Classification of GSM Indicators 12Formalism of Telecom Procedures 13SDCCH Traffic 14TCH Traffic 15QoS SDCCH 16QoS RTCH 17QoS Call Statistics 18Handover Causes 19Outgoing Handovers 20Incoming Handovers 21Intracell Handovers 22Handover Statistics per Couple of Cells 23Self-assessment on the Objectives 24End of Module 25
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Table of Contents [cont.]
Switch to notes view!
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Section 1 Module 2 Page 7
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1 Indicators Reference Name
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1 Indicators Reference Name
Description
z Each QOS indicator has a unique REFERENCE NAME of 10 characters.
UnitFamily
Procedure Type JokerPrefix Sub-type
mandatory
optionalTechnology
B11
z Tehnology: G (GSM), U (UMTS), W (WiMaX)
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2 Indicators Classification
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2 Indicators Classification
BSS Counter Collection Mechanism
z Cumulative The counter is incremented at the occurrence of a specific event. Abis or A message, or internal event. At the end of a collection period, the result is the sum of the events.
z Inspection Every 20 or 10 seconds, a task quantifies an internal resource status (usually
a table). At the end of a collection period, the result is the mean value.
z Observation Set of recorded information about a telecom procedure (handover, channel
release, UL & DL measurements reporting).
z Radio Measurement Statistics Aggregation of all "Measurement Results" for a day and a TRX/Cell.
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2 Indicators Classification
BSS Performance Measurement Types
2G Traffic flow meas.180Overview meas.110
B11IP transport35B9Voice Group Call Services34B9Electro-Magnetic Emission 33B8Change of frequency band meas.32
Radio Measurement Statistics31SMS CB meas.30Directed retry meas.29SDCCH HO28
1 cell2G TCH incoming HO per adj. meas.2740 cellsTCH outgoing HO per adj. meas.26
SCCP meas.25SMS PP meas.19A interface meas.18
15 cellsTCH observation1515 cellsOutgoing external HO obs.1415 cellsIncoming external HO obs.1315 cellsInternal HO obs.121 cellTCH meas. obs.11
15 cellsSDCCH obs.10N7 meas.9X25 meas.8LapD meas.7
40 cellsTCH HO meas.640 cellsResource usage on TCH meas.540 cellsResource usage on SDCCH meas.440 cellsResource usage on CCCH meas.340 cellsResource availability meas.240 cellsTraffic meas.1
Since LimitationsNameType
B11
A standard PM type can be activated for the whole network. It means that the related counters are reported for all the Network Elements they are implemented on (TRX, CELL, N7 link, X25 link, LAPD link, Adjacency).
A detailed PM type can be activated only on a sub-set of the network. It means that the related counters are reported only for a limited number of Network Elements:
z 40 cells per BSS for PM types 1, 2, 3, 4, 5, 6, 26, 29z 15 cells per BSS for PM types 10, 12, 13, 14, 15z 1 cell per BSS for PM types 11, 27Counter numbering rules:
z Cyz: cumulative or inspection counters in PM types 1, 2, 3, 4, 5, 6, 18, 19, 25, 26, 27, 28, 29, 30, 32, 180z Ly.z: cumulative counters in PM type 7 (L stands for LAPD link)z Xy.z: cumulative counters in PM type 8 (X stands for X25 link)z Ny.z: cumulative counters in PM type 9 (N stands for N7 link)z Syz: observation counters in PM type 10 (S stands for SDCCH)z Ryz:: observation counters in PM type 11 (R stands for Radio measurements)z HOyz: observation counters in PM type 12, 13, 14 (HO stands for HandOver)z Tyz: observation counters in PM type 15 (T stands for TCH)z RMSyz: cumulative counters in PM type 31 (RMS stands for Radio Measurement Statistics)z MCyz or MNy.z: cumulative counters in PM type 110 (M stands for Major)
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2 Indicators Classification
Classification of GSM Indicators
Control Channels
Traffic load
Call statistics
Global QoS Handover Resource availability
Multiband
Densification techniques
GSM indicators
3G to 2G HOA Channel availability
SCCP
TCH
RTCH
Couple of cell
SDCCH/TCH HO
Intracell HO
Multilayer / Multiband Network
Concentric cells
Inter-PLMN HO
SDCCH availability
RTCH availability
SDCCH
Outgoing HO Directed retryDynamic SDCCHSDCCH
Incoming HO
HO causes
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2 Indicators Classification
Formalism of Telecom Procedures
Telecom procedure-ATTEMPT
Telecom procedure-SUCCESS
Telecom procedure-whose channel is ALLOCATED in BSC
channel activationfailure
assignment/HOexecution failure
PREPARATION phase
EXECUTION phase failure in channel
established phase
the MS has seized the channel
- radio link failure- handover execution failure(with or without reversionto the old channel)- BSS problem- NSS problem
- radio link failure- BSS problem- NSS problem
Telecom procedure-REQUEST
- BSS problem- NSS problem
- congestion
no resource availablein BSC
resource availablein the BSC
channel activationsuccess
(start)
(end)Success Rate = (Success) / (Request)Efficiency Rate = (Success) / (Allocated)Unsuccessful Rate = (Preparation & Execution Failures) / (Request)Failure Rate = (Failure) / (Request)
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2 Indicators Classification
SDCCH Traffic
z Traffic Load and Traffic Model z SDCCH traffic
Estab
SDCCH Traffic
TrafficMT
TrafficMO
Loc. Update
IMSI Detach
Sup. Service
Call
LU Follow on
SMS
CallRe-Estab
Other
MSPenetration Rate
TrafficDual Band
ResourceOccupancy
SDCCHErlang
SDCCH MeanHolding TimeGlobal
Traffic
GlobalRequests
TrafficModel
HandoverNormalAssignment
NormalAssignment
Handover
The Traffic model section includes indicators for:
z number of SDCCH connection requests and successes (Immediate Assignment, HO).z distribution of SDCCH connection success (MO and MT connections versus all MO+MT connections, type of MO connections versus all MO connection types).
The MS penetration rate section includes the indicator for percentage of multiband MS SDCCH access (except LU) versus all MS SDCCH accesses.
The Resource occupancy section includes indicators for:
z SDCCH traffic in Erlang.z average duration in seconds of SDCCH channel usage.
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2 Indicators Classification
TCH Traffic
z Traffic Load and Traffic Modelz TCH traffic RTCH Traffic
ResourceOccupancy
TCHErlang
Full RateErlang
Full RateAllocated
Full RateMean TCH
Time
Half RateErlang
Half RateAllocated
Half RateMean TCH
Time
Blocking Peak
Ratio ofHR Traffic
TCHMultibandOccupancy
Traffic Model
REQUESTSAssign / HO / DR
SUCCESSAssign/ HO/ DR
HO PER CALL
REQUESTSFR, DR, DR/EFR, AMR, DATA
Speech Version&
Channel Type
ALLOCATIONSFR, HR, EFR, AMR, DATA
SUCCESSAMR / TFO
The Speech Version and Channel Type section includes indicators for:
z distribution of TCH allocation requests (FR/DR/DR+EFR/AMR/DATA).z distribution of TCH allocation successes (FR/DR/DR+EFR/AMR/DATA).z rate of TCH AMR allocation successes.z rate of TFO calls versus all speech calls.
The Traffic model section includes indicators for:
z number of TCH connection requests and successes (Normal Assignment, HO, DR).z rate of TCH allocation successes for HO+DR versus all TCH allocations (NA+HO+DR).z number of HOs per call.
The Resource occupancy section includes indicators for:
z RTCH traffic in Erlang (FR+HR, FR, HR, multiband).z average duration in seconds of RTCH channel usage (FR+HR, FR, HR).z number of TCH FR allocations and number of TCH HR allocations.z rate of TCH HR allocations versus all TCH allocations (FR+HR).z TCH peak of blocking (TCH congestion time).
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2 Indicators Classification
QoS SDCCH
z GLOBAL Quality of Servicez SDCCH
SDCCH
EstablishedPhase
Drop Rate
Drop Radio Drop HO
Unsuccess
Congestion
Assignment Phase/
Handover
RadioFailure
BSS Failure
Access Reject
Dynamic Allocation
Drop BSS
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2 Indicators Classification
QoS RTCH
z GLOBAL Quality of service z RTCH
DirectedRetry
RTCH
Unsuccess
Assignment Phase/
Handover
Global RadioCongestion Level
Congestion
RadioFailure
BSSFailure
EstablishedPhase
Drop rate
Drop Radio
Drop BSS
Drop HO
Preemption
PreemptionPhase
PCI =1 PVI =1
Requests
Allocationwith / withoutPreemption
Failure
Success
Success
QueuingPhase
Queue Length
AssignQueuing Fail
AssignQueued
& Reject
QueuedSuccess
Queue Full
HigherPriority
Timeout
AssignQueued
NormalAssign.
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2 Indicators Classification
QoS Call Statistics
z GLOBAL Quality of servicez Call statistics Call Statistics
Call Success
Call SetupSuccess Rate
CallSuccess Rate
Cell QualityFactor Absolute
Cell QualityFactor Relative
Call Drop
Call Drop Rate
Drop Radio Drop BSSDrop HO
Transcoder Failure
BSS Internal Failure
Call DropEnd User Rate
Preemption
End to End Call Setup
Success Rate
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2 Indicators Classification
Handover Causes
z Handover STATISTICSz Handover causes
Handover causes
HO causes
All HO
cause distribution
Outgoing HO Incoming HO
HO standardcause
distribution
HO cause category
distribution
HO causes per Adjacency
HO cause category
distribution
Fast traffic HO taken into account type of counter for dual band HO
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2 Indicators Classification
Outgoing Handovers
z Handover STATISTICSz Outgoing handovers
Failure With Reversion
Call Drop Rate
Efficiency
Preparation Success Rate
Intra-BSC
Failure With Reversion
Call Drop Rate
Efficiency
Preparation Success Rate
External
Call Drop Rate
Efficiency
Success Rate
Intra-BSC & External
Outgoing HO
LAPD counter to analyze the cause of delay in HO procedures
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2 Indicators Classification
Incoming Handovers
z Handover STATISTICSz Incoming handovers
Failure BSS
Failure Radio
Congestion
Efficiency
Intra-BSC
Failure BSS
Failure Radio
Failure No CIC
Congestion
Efficiency
External
Efficiency
Intra-BSC & External
Incoming HO
Incoming external HO 3G - > 2G Incoming external HO 2G - > 2G only
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2 Indicators Classification
Intracell Handovers
z Handover STATISTICSz Intracell handovers
z New B9 counters: HO Cause 30 NB_TCH_HO_REQ_30_ReturnCSZone
=MC480 (Type 110) NB_TCH_HO_ATPT_30_ReturnCSZone
=MC481 (Type 110)
CDR Radio CDR BSS
Failure With Reversion
Failure BSS
Call Drop Rate
Congestion
Efficiency
Intracell HO
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2 Indicators Classification
Handover Statistics per Couple of Cells
z Handover STATISTICSz Handover statistics per couple of cell
HO Success Distribution
Success Rate
Efficiency
Preparation Success Rate
HO statisticsper Couple of Cell
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Self-assessment on the Objectives
z Please be reminded to fill in the formSelf-Assessment on the Objectivesfor this module
z The form can be found in the first partof this course documentation
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End of ModuleIndicators Overview