alcatel bsc hardware
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All rights reserved © 2005, Evolium
MXBSC PRESENTATION Khalil-ur-Rehman
Summary
Page 2
G2 BSC Hardware Overview
MxBSC Software Architecture
MxBSC Hardware Presentation
MxBSC Functional Improvements
Evolution Capacity Improvements
G2 BSC Hardware Overview
Page 3
Commonly in G2 BSC for Alcatel there are three racks and each rack contains eight shelves.
There are eight shelves in one BSC rack. Count starts from breakers shelf at the top and ends at the last shelf in the bottom.
G2 BSC Hardware Overview
Three main Terminal Sub Units (TSUs)
Common TSU ( Within the BSC).Abis TSU ( BSC to BTS).ATER TSU ( BSC to Transcoder)
G2 BSC Hardware Overview
COMMON TSUIn the common TSU the functions are carried out by the BSC. For Example call initiation, call establishment and handovers etc.The card which comes in the common TSU domain is CPRC (cpra card)
CPRC (Common Processor Type C)There are six cpra cards in the first rack of the Alcatel BSC.Two Cpra OSI (Open system interface). These are responsible for establishing the link b/w BSC and the OMCR. IN short the these two CPRC contain the OML of the BSC through X.25 link.Two Cpra Sis These are the main controller processors for the BSC. The various functions are carried out through this card. Two Cpra Broadcast. Used for the local bus interface in the BSC.
G2 BSC Hardware OverviewABIS TSUAbis Tsu is responsible for the link between the BTS and the BSC. One Abis TSU contains one BIUA card and eight TCUC cards and two access switches. BIUA (BTS Interface Unit Type A)One BIUA contains six abis. Abis is the link between the BTS and the BSC. It’s a 2 MB link. One BIUA has eight TCUC cards.
TCUC (TRX Control Unit Type C)Basically TRX are configured on the TCUC cards. One TCUC can contain four full rate and two half rate TRX.TCUC also contain the OML for the site.
G2 BSC Hardware OverviewATER TSUOne Ater TSU contains two ASMB cards, eight
DTCC cards and two access switches.
ASMB (Ater Sub Multiplexer at the BSC)One ASMB is one Ater mux. One DTCC (Digital trunk controller type C).TSCA (Transmisson Submultiplexer
Contoller Type A)All the transmission cards are working under
this important card. Each rack contains this card at shelf eight and slot 5.
MxBSC Software Architecture
Page 8
From G2BSC to MxBSC
BSC application architecture
MxPF Software
MxBSC Software Architecture From G2BSC to MxBSC
Page 9
TCUC
TCUC
TCUC
TCUC
TCUC
TCUC
TCUC
TCUC
AS
DTCC
DTCC
DTCC
DTCC
DTCC
DTCC
DTCC
AS
DTCC
CPRC CPRC CPRC CPRC CPRC CPRC CPRC CPRC
AS
6 xG.703AbisI/F
2 xG.703AtermuxedI/F
Abis TSU Ater TSU
Common Functions TSU
Group Switch8 Planes2Stages
TSL
ASMB
ASMB
Q1 bus
Broadcast bus
TSCA
BIUA
OMCPOMCP
SSWSSW
TP & LIU ShelfTP & LIU Shelf
CCPCCP
• No more CPR broadcast: the feature is emulated.
• DTC TCH-RM does not manage Ater anymore and are moved on OMCP.
MxBSC Software ArchitectureBSC application architecture
Page 10
G2BSC Control Element (TCU, DTC, CPR, TSC) becomes MxBSC Virtual Control Element (VTCU, VDTC, VCPR, VTSC)
OSND PF
DBCS
Application (FMM/SSM)
PFM
One CE per G2 BSC board
Carrier Grade Linux
VOS
DBCS
Application (FMM/SSM)
PFM
MxPF
VCE-1 Mx BSC Board
…
CMW Boot VOS
DBCS
Application (FMM/SSM)
PFM
VCE-n
CMW Boot
…
BSC Porting
DBCS: G2 BSC Database Management System MxPF: Mx Platform software PFM: G2 BSC Platform Management OSND: G2 BSC Operating System PF: Platform drivers VOS Simulation of OSND
MxBSC Software Architecture MxPF Software
Page 11
> EndurX library manages the hardware environment via the Hardware Platform Interface (HPI) based on IPMI software and hardware standard.
AdvancedTCA (PICMG 3.x)
Carrier Grade Linux
Self reliant
EndurX
MxPF
Mx BSC applications
Adaptation Layer
> Self-Reliant provides the framework for developing applications that deliver service availability into a clustered distributed environment.
> MxPF is in charge of processes management, hardware management, software management, init and few basic services like traces or date synchronization.
MxBSC HARDWARE PRESENTATION
Page 12
SSW OMCP CCP TP-GSM MUX LIU
MxBSC HARDWARE PRESENTATIONSSW Switch Board
Page 13
SBL: SSW-HW 1&2 Redundancy: 1+1
Allows exchanges between all the elements of the platform and external IP/Ethernet equipment:
OMC-R physical interfaceCBC physical interface NEM terminal connectionSecond ATCA shelf connectionExternal Alarm Box connection
MxBSC HARDWARE PRESENTATIONOMCP O&M Control Processing board
Page 14
SBL: CP-HW, CP-LOG 1&2 Redundancy: 1+1
O&M Control Processing board based on ATCA technology equipped with a permanent storage device. In charge of managing the whole platform as system manager and O&M applications.
O&M - logical interface to the Operation and Maintenance Center (OMC-R)
VCPR: S-CPR & O-CPR softwareDTC TCH/RMTSC software
MxBSC HARDWARE PRESENTATIONCCP Control Processing board
Page 15
SBL: CP-HW, CP-LOG 3, 4 & 5 Redundancy: N+1
Call Control Processing board based on ATCA technology used for call control functions.
Identical to OMCP board without Hard disk. VTCU: TCU software (50 per CCP)VDTC: DTC software (40 CS & 24 PS per CCP)
MxBSC HARDWARE PRESENTATIONTP-GSM Transmission Processing board
Page 16
SBL: TP-HW 1&2 Redundancy: 1+1
Provide telecom transmission /transport interfaces to the MX platform.
Configuration ManagementPerformance Parameters ManagementHDLC termination SS7 terminationNE1oEQ1Ring control
MxBSC HARDWARE PRESENTATIONMUX
Page 17
SBL: ECU 1&2 Redundancy: 1+1
Multiplexing and de-multiplexing of up to 16 E1 streams (16 E1 each) from the LIU boards
Configuration management and supervision of the LIU boards
1 GbE interfaceNE1oE packing/unpacking to/from up to 32
physical entities (TPGSM boards)Debug interface
MxBSC HARDWARE PRESENTATIONLIU
Page 18
SBL: ETU 1 to 16 No redundancy
Connection of up to 16 physical E1 interfaces (Tx / Rx)
Multiplexing and de-multiplexing of 16 E1 to/from the two MUX boards
LIU synchronizationCommunication with the MUX boards for LIU board
configuration and supervisionDetection of LOS on any E1 connected and in use
MxBSC Functional Improvements
Page 19
New dimensioning
New switching connectivity
MxBSC Functional Improvements
New dimensioning
Page 20
Configuration Type 1 2 3
Capacity Nb TRX
Nb Cell
Nb BTS
200
200
200
400
264
255
600
264
255
Nb of E1 Abis
Ater CS
Ater PS
96
10
6
96
20
12
176
30
18
Nb VCE CCP Nb TCU
Nb DTC CS
Nb DTC PS
50
40
24
100
80
48
150
120
72
Nb VCE OMCP Nb TCH-RM pairs
Nb CPR pairs
Nb TSC pairs
8
2
6
8
2
6
8
2
6
Nb VCE per board Nb VCE per CCP
Nb VCE/OMCP
114
16
114
16
114
16
Telecom traffic: from 1900 to 2600 erlangs
MxBSC Functional Improvements
New switching connectivity
Page 21
MxBSC
CCP
TP
TCU DTC
Abis Ater
SignalingSignaling
Telecom TrafficTelecom Traffic
With MX BSC the CS and the PS traffics are switched inside the TP
G2BSC
BIUA ASMB
TCU
Switching
DTC
Abis Ater
SignalingSignaling
Telecom TrafficTelecom Traffic
1 TCU = 32 OBCI1 FR TRE = 8 OBCI
1 DR TRE = 16 OBCI1 EXTS = 4 OBCI
1 TCU = 4 FR TRE1 TCU = 2 DR TRE 1 TCU = 8 EXTS
With G2 BSC the CS and the PS traffics goes through the TCU and DTC
Evolution Capacity Improvements
TRE/VTCU Mapping
HSL MODE
Evolution Capacity Improvements
TRE/VTCU Mapping
In B10, the maximum number of TREs mapped on a VTCU is 4 whatever their type (FR/DR). A CCP board contains 50 VTCUs and can manage upto 1500 TCHs
Evolution Capacity Improvements HSL MODE In B10, in LSL mode, the bandwidth is not wide enough to carry the
No.7 signaling in the case of large-capacityBSCs (that can support more than 600 TRXs). Therefore, the HSL mode
is implemented. In TDM mode, the HSL links are connected from the BSC to the MSC
without going through the TransCoder (TC).For redundancy purposes, 2 HSLs are used. The load is shared
between both HSLs.
Evolution Capacity Improvements
Page 25
HSL Engineering Rules
The HSL configuration requires 2 AterMux. Any AterMux can be candidate if:It does not carry Qmux.It does not carry IP over Ater.It is configured for CS traffic only.The HSL and LSL modes cannot be mixed on a BSC.The AterMux supporting HSL must be configured on different LIU boards.
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