01-Omc031100 Bsc6900 Gsm v900r011 Product Description Issue1

Revision RecordCourse Code OMC031100 Product BSC6900

Don t Dont Print This PageProduct Version V900R011 Course Version ISSUE 1.14

Developer/Modifier Shen Qingyong Shen Qingyong Li Xi/64495

Time 2009-07-29 2009-08-29 2011-12-29

Approver Mi Jia Mi Jia

New/Update New Update Debug

Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved.

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BSC6900 GSM Product Descriptionwww.huawei.com


ForewordThe BSC6900 is an important network element (NE) of Huawei Single RAN solution. It adopts the industryleading multiple radio access technologies, IP technologies transmission mode, and modular design. It features high capacity, high integration, high performance, and low power consumption


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ReferencesBSC6900 Technical Description BSC6900 Product Description BSC6900 Hardware Description


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ObjectivesUpon completion of this course you will be able to: course,Understand BSC6900 function and features Master BSC6900 hardware structure Detail the signal flows in BSC6900 List the typical hardware configuration of BSC6900


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Contents1. 1 System Description 2. Hardware Structure 3. System Signal Flow 4. 4 Typical Configuration


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Location of the BSC6900The HUAWEI BSC6900 is a new generation GSM BSC product after BSC6000 and BSC6810


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High Integration and Low CostSupports 3,072 TRXs in a single cabinet 3 072 Supports the simultaneous activation of up to 12,288 PDCHs Maximum of traffic: 19,500 Erl; BHCA : 5,250,000


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Features of the BSC6900 SystemHigh integration and low cost Easy configuration and convenient maintenance All-IP platform Smooth evolution for investment protection Web-based LMT


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Flexible ConfigurationHardware ConfigurationBM/TC Separated Mode BM/TC Combined Mode A over IP Mode


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BSC6900 Evolution PathsBSC6810SW upgrade with Legacy HW + New HW (optional)

BSC6900UMTS Only

BSC6900UMTS Only

SW upgrade with Legacy HW + New HW (necessary)

BSC6900Dual mode

BSC6900Dual D l mode d

SW upgrade with Legacy HW + New HW (necessary)

BSC6000

SW upgrade with Legacy HW + New HW (optional)

BSC6900GSM Only l2008

BSC6900GSM Only

GBSS8.1/RAN10

GBSS9.0/RAN11 2006

GBSS12.0/RAN12 2009


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Dual Mode DesignGSM&UMTS cabinet b GSM&UMTS co cabinet co-cabinet

RNC

BSC Software Upgrade

RNC

RNC

BSC

RNC

RNC

BSC

BSC

Smooth evolution from BSC to RNC with soft are upgrade e ol tion ith software pgrade Reducing CAPEX by reusing hardware Dynamic capacity adjustment between 2G&3G


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Feature of BSC6900Co OAM BSC6900 CoUnified CME : Simultaneous 2G/3G data configuration, configuration correctness and efficiency guaranteed

Unified WEB LMT for maintenance: 2G/3G Maintenance more easy and intuitionistic


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Feature of BSC6900Co TRM BSC6900 Co

FP FP FP

FP FP

UDP UNI-BTS pTRAU pTRAU IP / PPPIP SW Router 3G 2G IP 3G 2G IP SW Router

UDP IP / PPP

FP Interface board

pTRAU

pTRAU

Co-transmission

UNI-BSC


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Feature of BSC6900Co RRM BSC6900 CoService direction on UMTS/GSM S i di ti Load L d control between UMTS/GSM t lb tHeavy Load Heavy Load

UMTS

UMTS

Load control by inter-RAT HOVoice PS service Heavy Load Heavy Load

GSM

GSM

3G/2G cell load consideration make it more accurate for the service direction, better p performance achieved

3G/2G cell load consideration make traffic load spread in UMTS&GSM evenly, network usage efficiency improved


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Contents2. 2 Hardware Structure2.1 Cabinets 2.2 Subracks 2.3 Boards 2.4 Cables


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BSC6900 CabinetThe BSC6900 uses the standard N68E-22 cabinet N68E 22 The N68E-22 cabinet is of two types, the single-door cabinet and the doubledouble door cabinet2200mm 2200mm

800mm 600mm 600mm

800mm

N68E-22 Cabinet (Single-door/Doubledoor)Copyright 2009 Huawei Technologies Co., Ltd. All rights reserved. Page17

Components of the CabinetBased on functions functions, cabinets are classified into the main processing rack (MPR), extended processing rack (EPR), and transcoder rack (TCR)(1) Filler panel (3) Air defense frame (5) Cable rack (2) Subrack (4) Power distribution box (6) Rear cable troughPage18


Components of the CabinetPOWER BOX POWER BOX POWER BOX

2

EPS

5

8

TCS

1

EPS

4

7

TCS

0

MPS

3

EPS

6

TCS

MPR

EPR

TCR


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Power Distribution BoxPOWER BOX

subrack2 subrack1 subrack0


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Subrack436mm

12U

500mm

(1) Fan box (4) Front cable trough (7) DC power input port

(2) Mounting ear (5) Boards (8) Port for the monitoring signal cable of the power distribution box

(3) Guide rail (6) Grounding screw (9) Cover plate of the DIP switch


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Dip Switch on the SubrackThe DIP switch on the subrack has eight bits from 1 to 8Subrack No.0 1 2 3 4 5

Bit 10 ON 1 OFF 0 ON 1 OFF 0 ON 1 OFF

20 ON 0 ON 1 OFF 1 OFF 0 ON 0 ON

30 ON 0 ON 0 ON 0 ON 1 OFF 1 OFF

40 ON 0 ON 0 ON 0 ON 0 ON 0 ON

50 ON 0 ON 0 ON 0 ON 0 ON 0 ON

6ON OFF OFF ON OFF ON

7ON ON ON ON ON ON

8OFF OFF OFF OFF OFF OFF


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Slots in the Subrackthe boards are installed on both the front and rear sides of the backplane

( ) (1) Front slot

( ) (2) Backplane p

( ) (3) Rear slot


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Main Processing Subrack (MPS)The MPS processes the basic services and performs the O&M function. In addition, the MPS provides clock for the system As the main processing subrack, the MPS is configured in the MPR. Only one MPS is configured in the BSC6900


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Main Processing Subrack (MPS)BSC6900 must have only one MPS

Rear Board

Front Board


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Extended Processing Subrack (EPS)As the extended processing subrack the EPS is subrack, configured in the MPR or EPR. It processes the basic services of the BSC6900 Compared with the MPS, the EPS is not configured with the GCUa and OMUa


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Extended Processing Subrack (EPS)BSC6900 has no EPS or up to 4 EPS for GSM

Rear Board

Front Board


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TransCoder Subrack (TCS)The TCS is the transcoder subrack. In BM/TC separated subrack configuration mode, the TCS is configured in the MPR, EPR, EPR or TCR It performs transcoding, rate adptation, and submultiplexing


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TransCoder Subrack (TCS)BSC6900 has up to 4 TCS for GSM

Rear Board

Front Board


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BSC6900 Logical StructureClock (optional)

Clock Synchronization Subsystem To BTS To other BSC To MSC To SGSN OM Subsystem LMT/M2000 Interface Processing Subsystem Switching Subsystem Service Processing Subsystem


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Switching SubsystemThe switching subsystem performs the following functionsProvides intra-subrack Medium Access Control (MAC) switching Provides intra-subrack Time Division Multiplexing (TDM) switching Provides switching channels for traffic data Provides OM channels Distributes clock signals to the service processing boards


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Switching Subsystem (Cont ) (Cont.)


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Network Topologies Between SubracksMAC switching - star topologyOne node functions as the center node and it is connected to t each of th other nodes. Th communication between h f the th d The i ti b t the other nodes must be switched by the center node

TDM switching - mesh topologyThere is a connection between every two nodes. When any y y node is out of service, the communication between other nodes is not affected


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TNUa BoardThe TNUa board performs the following functions:Provides 128 k * 128 k TDM switching Allocates the TDM network resources Only supports GSM


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SCUa BoardThe SCUa board performs the following functions:Provides the maintenance management function Provides configuration and maintenance of a subrack or of the entire BSC6900 Monitors the power supply, fans, and environment of the cabinet Enables inter-subrack connections Supports GSM&UMTSCopyright 2009 Huawei Technologies Co., Ltd. All rights reserved. Page37

Service Processing SubsystemThe service processing subsystem performs the following functionsRadio resource management and control Radio access management Cell broadcast service control CS service processing PS service processing


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Service Processing Subsystem


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XPUa BoardThe XPUa board performs the following functions:There are four logical processing units inside a Th f l i l i i i id XPUa board. It only supports GSM. Main Processing U it (MPU) manage th user M i P i Unit (MPU): the panel resources, signaling panel resources, and the DSP status of the subrack Signaling Processing Unit (SPU): process the signaling Main control XPUa supports 270TRXs and Nonmain control XPUa supports 360TRXs at mostCopyright 2009 Huawei Technologies Co., Ltd. All rights reserved. Page40

XPUb BoardThe XPUb board performs the following functions:There are eight logical processing units inside a XPUb board. So its processing capability improves 75%-100% more than XPUa. It only supports GSM. Main Processing Unit (MPU): manage the user panel resources, signaling panel resources, and the DSP status of the subrack f h b k Signaling Processing Unit (SPU): process the signaling i li Main control XPUb and Non-main control XPUb can b th support 640 TRX at most both t TRXs t tCopyright 2009 Huawei Technologies Co., Ltd. All rights reserved. Page41

SPUa/SPUb BoardThe SPUa/SPUb board performs the following functions:The SPU /SPUb Th SPUa/SPUb support both GSM b h and UMTS. There are four/eight l i l units Th f / i ht logical it inside a SPUa/SPUb board. The processing capability of SPUb improves 75%-100% more than SPUa .


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DPUc BoardThe DPUc board performs the following functions:Provides the speech format conversion and data forwarding functions Encodes and decodes voice services Supports 960 speech transcoding and 3740 frames h di d f conversion Provides the Tandem Free Operation (TFO) function Provides the voice enhancement function Detects voice faults automatically Only supports GSMCopyright 2009 Huawei Technologies Co., Ltd. All rights reserved. Page43

DPUd BoardThe DPUd board performs the following functions:Processes the PS services on up to 1,024 simultaneously active PDCH where signals are coded i MCS9 ti PDCHs h i l d d in Processes packet links Detects packet faults automatically Only supports GSM y pp


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DPUb BoardThe DPUb board performs the following functions:Provides the speech format conversion and data forwarding f f d functions Encodes and decodes voice services Provides the Tandem Free Operation (TFO) function Performs the functions of the GTP-U IUUP, PDCP RLC GTP-U, IUUP PDCP, RLC, MAC, and FP protocols Provides the voice enhancement function id h i h f i Supports GSM and UMTSCopyright 2009 Huawei Technologies Co., Ltd. All rights reserved. Page45

Clock Synchronization SubsystemCN BITS MPS To BTSI N T I N T GCUa Clock module S C U a

GPS

8kHz

19.44MHz, 32 768MHz 8kHz 19 44MHz 32.768MHz,8kHz EPS To BTSI N T

8KHzS C U a S C U a

EPSI N T

To BTS

19.44MHz, 32.768MHz,8kHz

19.44MHz, 32.768MHz,8kHz Clock cable

High-speed backplane channel


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GCUa BoardThe GCUa board performs the following functions:Traces, generates, and maintains the synchronization T d i i h h i i clock The t db GCU b Th standby GCUa board traces th clock phase of the dt the l k h f th active GCUa board. This ensures the smooth output of the clock phase in the case of active/standby switchover Supports GSM&UMTS


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Interface Processing SubsystemInterface board categoryBoard Type Transport Mode TDM Port Type Electrical port Optical port FE/GE E1 STM 1 STM-1 GE Board EIUa OIUa FG2a/FG2c PEUa POUc GOUa/GOU c Support Mode GSM Only GSM&UMTS GSM&UMTS GSM&UMTS GSM&UMTS GSM&UMTS

INT IP

Electric al port Optical port


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The EIUa board performs the following functions:Transmits, receives, encodes, and decodes 32 E1 /T1 T it i d dd d E1s/T1s Processes signals according to the LAPD protocol, SS7 MTP2 protocol Provides the Tributary Protect Switch (TPS) function between the active and standby EIUa boards Provides the OM links when the TCS is configured on the g MSC side Supports the A Abis, Pb and Ater interfaces A, Abis Supports 384TRX for Abis interface or 960 CICs for A interface i t fCopyright 2009 Huawei Technologies Co., Ltd. All rights reserved. Page49

EIUa Board

OIUa BoardThe OIUa board performs the following functions:Provides one STM-1 port for TDM transmission with the rate of 155.52 Mbit/s Processes signals according to the LAPD protocol, SS7 MTP2 protocol Provides the Automatic Protection Switching (APS) function between the active and standby OIUa boards Provides the OM links when the TCS is configured on the MSC side Supports the A, Abis, Pb and Ater interfaces Supports 384TRX for Abis interface or 1920 CICs for A interfaceCopyright 2009 Huawei Technologies Co., Ltd. All rights reserved. Page50

FG2a BoardThe FG2a board performs the following functions:Provides 8 channels over FE ports or 2 channels over GE electrical ports Provides the routing-based backup and load sharing Supports the Abis, A, and Gb interfaces Supports 384TRX for Abis interface ,6144 CICs for A interface or 128Mbps Gb throughputCopyright 2009 Huawei Technologies Co., Ltd. All rights reserved. Page51

FG2c BoardThe FG2c board performs the following functions:Provides 12 channels over FE ports or 4 channels over GE electrical ports Provides th P id the routing-based b k and l d ti b d backup d load sharing Supports the Abis, A, and Gb i t f S t th Abi A d interfaces supports 2048TRX for Abis interface, 23040 CICs f A interface or 1024Mbps Gb for f throughput10M/100M 10M/100M/1000M


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PEUa BoardThe PEUa board performs the following functions: p g Provides 32 channels of E1s/T1s for HDLC transmission Provides the Tributary Protect Switch (TPS) function between the active and standby PEUa boards Transmits, receives encodes Transmits receives, encodes, and decodes 32 channels of E1s/T1s. The E1 transmission rate is 2.048 Mbit/s; the T1 transmission rate is 1.544 Mbit/s. Supports the Abis and Gb interfaces Supports 384TRX for Abis interface or 64Mbps Gb throughput


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POUc BoardThe POUc board performs the following functions: Provides 4 channels over channelized optical STM-1/OC-3 ports based on IP protocol Supports the PPP function Extracts line clock signals Provides the Automatic Protection Switching (APS) function between the active and standby POUc boards Supports the A Abis Gb Ater interfaces A, Abis, Gb, POUc over TDM supports 512TRX for Abis interface,3906 CICs for A interface or 504Mbps Gb throughput p g p POUc over IP supports 2048 TRX for Abis interface or 23040 CICs for A interface


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GOUa BoardThe GOUa board performs the following functions:Provides 2 channels over GE optical ports for IP transmission t i i Provides the routing-based backup and load sharing Supports the Abis and A interfaces Supports 384 TRX for Abis interface and 6144 CICs pp


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GOUc BoardThe GOUc board performs the following functions:Provides four channels over GE optical ports Provides the routing-based backup and load sharing Extracts line clock signals Supports the Abis, A, and Gb interfaces Supports 2048 TRX for Abis interface, 23040 CICs for interface A interface or 1024 Mbps Gb throughput


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OM SubsystemS C U aInternal network t k

S C U a S C U a

EPS

External network To M2000

O M U aHUB

O M U a

S C U a

MPS

Internet cable serial cable i l bl Alarm box LMT


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OMUa BoardOMUa board is the Back Administration Module (BAM) of the BSC6900, it performs the following functions :Configuration management, performance management, fault management, security management, and loading management functions for the system Providing with the operation and maintenance interface for the LMT/M2000 users


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Main CablesTrunk Cables75 coaxial cable and Active/Standby 75-ohm coaxial cable 120 twisted pair cable and Active/Standby 120 twisted pair cable

Network cables Optical Fibers l b Y-Shaped Clock Cable p PDB Monitoring Signal CableCopyright 2009 Huawei Technologies Co., Ltd. All rights reserved. Page60

Trunk Cables75 ohm 75-ohm Coaxial Cable /120-ohm Twisted Pair Cable /120 ohm

(1) DB44 connector

(2) Main label (Identifying the code, version, version and manufacturer information of the cable) (4) Metal case of the DB44 connector

(3) Label (Identifying a coaxial cable/twisted pair cable)


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Trunk Cables (Cont ) (Cont.)Active/Standby 75-ohm Coaxial Cable 75 ohm

(1) DB44 connector (3) Label (Identifying a coaxial cable) (5) Label 2 (identifying a coaxial cable)

(2) Metal case of the DB44 connector (4) Main label (identifying the code, version, and manufacturer information of the cable)


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Trunk Cables (Cont ) (Cont.)Active/Standby 120-ohm Twisted Pair Cable 120 ohm

(1) DB44 connector (3) Label 1 (identifying a twisted pair cable) (5) Label 2 (identifying a twisted pa cab e) t sted pair cable)

(2) Metal case of the DB44 connector (4) Main label (identifying the code, version, and manufacturer information of the cable)


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Ethernet CableStraight Through Straight-Through Cable


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Optical CablesOptical cables are used to connect the optical interface board to the Optical Distribution Frame (ODF) or other NEs. NEs


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Y-Shaped Clock CableThis cable transmits the 8 kHz clock signals from the GCUa/GCGa board in the MPS to the SCUa board in the EPS.

(1) Label (identifying a pair of twisted pair cables)

(2) RJ45 connector


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PDB Monitoring Signal CableThe power distribution box (PDB) monitoring signal cable is used to transmit monitoring signals from the PDB to the subracks subracks.


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QuestionsHow many subsystems does BSC6900 have? And what are they? How to set the dip switches for MPS?


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BSC6900 Signal FlowsUser Plane User-Plane Signal FlowGSM CS Signal Flow GSM PS Signal Flow

Control-Plane Signal Flow gSignaling Flow on the A Interface Signaling Flow on the Abis Interface Si li Fl th Abi I t f Signaling Flow on the Gb Interface


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GSM CS Signal FlowAbis over TDM and A over TDM


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GSM CS Signal FlowAbis over HDLC/IP and A over TDM


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GSM CS Signal FlowAbis over HDLC/IP and A over IP


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GSM PS Signal FlowAbis over TDM


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Signaling Flow on the A InterfaceA over TDM


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Signaling Flow on the A InterfaceA over IP


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Signaling Flow on the Abis InterfaceAbis over TDM/IP/HDLC


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Signaling Flow on the Gb InterfaceGb over IP/FR


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Typical Configuration of BSC6900When the R11 boards are configured in BM/TC Combined modeIndex Number of cabinets BHCA(K) TrafficErl TRX number Number of active PDCHsMCS 9 PDCHsMCS-9 Gb interface throughputMbps 128 Capacity 1 875 3250 512 2048 MPS MPR


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Typical Configuration of BSC6900When the R11 boards are configured in BM/TC Combined modeIndex Number of cabinets BHCA(K) TrafficErl TRX number Number of active PDCHsMCS 9 PDCHsMCS-9 Gb interface throughputMbps 384 Capacity 1 2625 9750 1536 6144 EPS

MPS MPR


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Typical Configuration of BSC6900When the R11 boards are configured in BM/TC Combined modeIndex Number of cabinets BHCA(K) TrafficErl TRX number Number of active PDCHsMCS 9 PDCHsMCS-9 Gb interface throughputMbps 640 Capacity 1 4375 16250 2560 10240 MPS MPR EPS EPS


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Typical Configuration of BSC6900When the R11 boards are configured in BM/TC Combined modeIndex Number of cabinets BHCA(K) TrafficErl TRX number Number of active PDCHsMCS 9 PDCHsMCS-9 Gb interface throughputMbps 768 Capacity 2 5250 19500 3072 12288 MPS MPR EPS EPS

EPS EPR


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Typical Configuration of BSC6900When the R11 boards are configured in BM/TC separate modeIndex Number of cabinets BHCA(K) TrafficErl TRX number Number of active PDCHsMCS 9 PDCHsMCS-9 Gb interface throughputMbps 256 Capacity 2 1750 6500 1024 4096 MPS MPR TCS TCR


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Typical Configuration of BSC6900When the R11 boards are configured in BM/TC separate modeIndex Number of cabinets BHCA(K) TrafficErl TRX number Number of active PDCHsMCS 9 PDCHsMCS-9 Gb interface throughputMbps 512 Capacity 2 3500 13000 2048 8192 EPS TCS

MPS MPR

TCS TCR


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Typical Configuration of BSC6900When the R11 boards are configured in BM/TC separate modeIndex Number of cabinets BHCA(K) TrafficErl TRX number Number of active PDCHsMCS 9 PDCHsMCS-9 Gb interface throughputMbps 768 Capacity 2 5250 19500 3072 12288 MPS MPR TCS TCR EPS TCS EPS


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SummaryAfter this course we have learned the position of course, BSC6900 in GSM network, and the specifications of cabinets, subracks, boards, cables, cabinets subracks boards cables functions of subsystems, signal flows of control-plane and user-plane of each interfaces. At last, we learned typical configuration of BSC6900


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GlossaryEPS: Extended Processing Subrack MPS: Main Processing Subrack TCS: TransCoder Subrack LMT: Local Maintenance Terminal


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Thank youwww.huawei.com www huawei com

01-Omc031100 Bsc6900 Gsm v900r011 Product Description Issue1

Documents

legacy hw

ss7 mtp2 protocol

tributary

ge electrical

ge optical

power distribution

tandem free

speech format