BSC Hardware Structure

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BSC6000 Hardware Structure

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Page1

Forewordl This course describes the hardware structure of the

HUAWEI BSC6000 system, board module functions, system

operating principles, system signal flows, and O&M flows. In

addition, this course describes the principles of hardware configuration and lists some typical configurations



Page2

Referencesl HUAWEI BSC6000 Hardware Description

l HUAWEI BSC6000 Product Description

l HUAWEI BSC6000 Performance Description



Page3

Objectivesl Upon completion of this course, you will be able to:

p Understand HUAWEI BSC6000 function and features

p Master HUAWEI BSC6000 hardware structure

p Understand HUAWEI BSC6000 system principle

p Master HUAWEI BSC6000 typical configuration



Page4

Contents1. System Description

2. Hardware Structure

3. System Logical Structure

4. System Signal Flow

5. Network topology

6. Typical Configuration



Page5

Location of the BSC6000l The HUAWEI BSC6000 is a new generation GSM BSC

product after M900/M1800 BSC

SGSN

MSC

GGSN

.

HLR

Abis

BSC6000

MS BTS

MSBTS

MSBTS

Um PDN

AGs

Gb



Page6

BSC6000 Version Evolution

V9R1C01V9R1C03

V9R8C01

V9R3C001

R1 R3 R8



Page7

Large capacity High integrationl Supporting 2048TRX at the full rate; supporting 2048TRX at

the half rate

l Maximum of traffic: 13,000 Erl; BHCA : 3,500,000

l Maximum number of subscribers ：650,000



Page8

Large capacity High integrationlBM/TC combined ，1 cabinet support 2048个TRX

lBM/TC separated, 2 cabinets support 2048个TRX

2048TRX2048TRX

2048TRX2048TRX

+

BMBM TCTC

BM+TCBM+TC



Page9

PCU6000

Built-in PCU, Advanced PS Performance

l One GDPUP supply 1024 MCS-9 active PDCH processing

l Support 512M throughput at most

14 15 16 17 18 19 20 21 22 23 24 25 26 27

GOIUA

GOIUA

GOIUA

GOIUA

GEPUG

GEPUG

GEIUB

GEIUB

GEIUB

GEIUB

GXPUM

GXPUM

GXPUT

GXPUT

GTNU

GTNU

GSCU

GSCU

GDPUP

GDPUX

GDPUX

GDPUX

GGCU

GGCU

0 1 2 3 4 5 6 7 8 9 10 11 12 13

GOMU GOMU

BSC6000



Page10

Support BSS Over IPl Abis over IP

p The Abis over IP function provides FE and GE interfaces and supports theIPv4 protocol. The Abis over IP function supports active/standby mode and load sharing mode, and enjoys very high reliability

l A over IP

p The TC function is realized in the MGW. Huawei BSS equipment extends the A interface protocol. Supporting the TrFO function, the BSS equipment can reduce the coding event count and improve the voice quality

l Gb over IP

p The function can simultaneously support two end-to-end communication modes between the PCU and the SGSN



Page11

Support BSS Over IP

A Interface

Over IP

Abis

Interface

Over IP

FG2a

IP route transmitting protocol function8FE ports or 2GE portsSupport IP over FE/GE/IWF

GOUa

IP route transmitting protocol functionSupply 2 optical portsSupport IP over GE

GFGUA

GOGUA

GFGUB

GOGUB

Support 6144 voice circuits; Support A interface over

384TRX，100% Half RateSupply Abis interface by FE/GE

384TRX，100% Half RateSupply Abis interface by GE

Support 6144 voice circuitsSupport A interface over IP



Page12

Support Abis over HDLC

PEUa

Supply HDLC overE1/T1 Supply 32E1/T1

GEHUB

1.384TRX，100% Half Rate.2.Every E1 could bear numbers of TRX corresponded with traffic type、activation factor and so on; Typical configuration is one E1 could bear24TRX(FR) or 21TRX(HR).



Page13

Flexible configuration l Multiple networking modes

p Based on E1/T1 or STM-1 networking, the BSC6000 and the BTSs can use the star, chain, and tree networking modes

p Based on IP networking, the BSC6000 supports HDLC-based Hub BTS networkingl Service-oriented hardware configuration

p The configuration for the Circuit Switched domain (CS) service and Packet Switched domain (PS) service is flexible. The system can be configured according to different requirements on voice and data services in different phases of network construction

l Multiple clock sources

p The selection of the synchronization clock is flexible. The clock sources can be obtained from:

n Building Integrated Timing Supply System (BITS)

n A interface



Page14

Flexible configuration

l Smooth capacity expansion and upgrade

p Smooth capacity expansion

p Online capacity expansion, online patching

l Convenient Operation & maintenance

p Friendly GUI

p Remote maintenance

p Online Help



Page15

Features of the BSC6000 System l Strong performance, advanced design

p Supporting 2M signaling link

p Supporting local multiple signaling points

p Supporting TC resource pool

p Supporting full-index report performance statistics

p MML function

p Support built-in GOMU



Page16





5. Network topology




Page17

Contents2. Hardware Structure

2.1 Rack

2.2 Subrack

2.3 Board



Page18

Structure of Rackl Model: Huawei N68-22 cabinet

p Dimension: 600mm (width) x800mm (depth) x

2200mm (height)

p Weight: 150 kgs of Empty cabinet; 350 kgs of

full configuration

l BSC6000 rack type

p GBCR: GSM BSC Control Processing Rack

p GBSR: GSM BSC Service Processing Rack



Page19

GBCRl The GBAM and GOMU are the operation

and maintenance entities of the BSC. There

are two types of BSC hardware

configuration: configuration type A and

configuration type B. In configuration type A,

the BSC is configured with the GBAM. In

configuration type B, the BSC is configured

with the GOMU. One BSC can use only one

configuration type.

GBAM

LAN Switch

KVM

Power distribution box

Subrack

Fan box

Cabling subrack

Type A GIMS

Type B，this location is configured with GMPS



Page20

GBSRl GBSR (GSM BSC Service

Processing Rack ): It is only configured with service subracks

l One service rack can be configured with three subracks at most according to the requirement

l The three service subracks consist of two types: GEPS and GTCS

Subrack

Subrack

Subrack



Page21

Fan Box l PFCU (Fan Control Unit)

p Monitors the running status of the fans in the fan box

p Reports the working status of the fan box to GSCU

p Detects the temperature of the fan box with a temperature sensor

p Shows the current status of fan box and alarms through LED

l PFPU (Fan Power Unit)

p provides power supply for nine fans

p keeps the voltage stable



Page22

Power Distribution Box l Checks two channels of - 48 V input voltage

l Detects one route of external temperature sensor; detects one route

of external humidity sensor; detects two lightning protection

components; detects the status of six distributed-power output

switches

l Reports the status of the power distribution box and exchanges

O&M information with the GSCU

l Emits audio and visual alarms



Page23

Subrackl The width of subrack is 19

inches

l A backplane is in the middle of

the subrack, and boards are

inserted from the front and the

rear of the subrack

l Both the front subrack and the

rear subrack provide 14 slots

p Numbered as 00 --13 from left to

right at the front

p Numbered as 14--27 from right

to left at the back

Board

Fan box

Cabling Trough

Front of subrack Rear of subrack



Page24

Subrack

GMPS/GEPSGMPS/GEPS GTCSGTCSBTSBTS

CBCCBC

MSCMSC

BMBM TCTC

AbisAbis AterAter AA

CbCb

LMTLMT



Page25

Abbreviation

Local Maintenance TerminalLMTGSM TransCoder SubrackGTCSGSM Main Processing SubrackGMPSGSM Extended Processing SubrackGEPS

Full Name Abbreviation



Page26

Subrack——GMPSl The GMPS processes the basic services and performs the

O&M function. In addition, the GMPS provides clock for the

system

l One BSC6000 is configured with one GMPS in the GBCR.

The fully configured GMPS can hold 512 TRXs



Page27

Subrack——GMPS(BM/TC combined)

l When non-IP boards are used on the A interface, the fully configured GMPS is shown in the below

1300 01 02 03 07060504 08 09 10 1211

GXPUM

GXPUM

GSCU

GSCU

GTNU

GTNU

2714 15 16 17 21201918 22 23 24 2625

GGCU

GGCU

GDPUP

GEIUB

GOMU

GXPUT

GXPUT

GDPUP

GDPUX

GOIUA

GOIUA

GOIUA

GOIUA

GEPUG

GEPUG

GDPUX

GEIUB

GEIUB

GEIUB

Backplane

Frontboard

Rearboard

GOMU



Page28

Subrack——GMPS(BM/TC combined)

=+

BM/TC seperated BM/TC combined



Page29

Subrack——GMPS(BM/TC seperated)

l When non-IP boards are used on the A interface, the fully configured GMPS is shown in the below

1300 01 02 03 07060504 08 09 10 1211

GXPUM

GXPUM

GSCU

GSCU

GTNU

GTNU

2714 15 16 17 21201918 22 23 24 2625

GGCU

GGCU

GDPUP

GEIUB

GOMU

GXPUT

GXPUT

GDPUP

GEIUB

GEIUB

GEIUB

Backplane

Frontboard

Rearboard

GOMU

GEPUG

GEPUG



Page30

Subrack——GMPS(A over IP)

GEPUG

GFGUA

GFGUA

GEPUG

GFGUB

GFGUB

14 16 17 18 19 20 21GEIUB

GEIUB

24 25 26 2722 23

GXPUM

GXPUT

GXPUT

GXPUM

GTNU

GTNU

00 01 02 03 04 05

GDPUX

GDPUX

GGCU

GGCU

10 11 12 13

GSCU

GSCU

GDPUP

GDPUP

06 07 08 09

15

Backplane

GOMU

GOMU

backboard

frontboard



Page31

Subrack——GEPSl The GEPS processes services for the BSC. The BSC6000

is configured with 0–2 GEPSs in the GBCR or the GBSR

l Compared with the GMPS, the GEPS is not configured with the GGCU and GOMU

l A fully configured GEPS can support 768 TRXs



Page32

Subrack——GEPS(BM/TC combined)

l When non-IP boards are used on the A interface, full GEPS configuration is shown in the below

1300 01 02 03 07060504 08 09 10 1211

GXPUM

GXPUM

GSCU

GSCU

GTNU

GTNU

2714 15 16 17 21201918 22 23 24 2625

GDPUP

GXPUT

GXPUT

GDPUP

GDPUX

GOIUA

GOIUA

GOIUA

GOIUA

GDPUP

GOIUA

GOIUA

GEIUB

GEIUB

GDPUX

GDPUX

GEIUB

GEIUB

GEIUB

GEIUB

GDPUX

GDPUX

Rearboard

Backplane

Frontboard



Page33

Subrack——GEPS(BM/TC seperated)

1300 01 02 03 07060504 08 09 10 1211

GXPUM

GXPUM

GSCU

GSCU

GTNU

GTNU

2714 15 16 17 21201918 22 23 24 2625

GDPUP

GXPUT

GXPUT

GDPUP

GDPUP

GEIUB

GEIUB

GEIUB

GEIUB

GEIUB

GEIUB

Rearboard

Backplane

Frontboard



Page34

GEPS-(A over IP)

GDPUX

GFGUA

GFGUA

GEHUB

GEHUB

14 16 17 18 19 20 21GEIUB

GEIUB

24 25 26 2722 23

GXPUM

GXPUT

GXPUT

GXPUM

GTNU

GTNU

00 01 02 03 04 05

GDPUX

GDPUX10 11 12 13

GSCU

GSCU

GDPUP

GDPUP

06 07 08 09

15

Backplane

backboard

frontboard



Page35

GTCSl The GTCS implements the transcoding, rate adaptation,

and sub-multiplexing functions

l The BSC6000 is configured with 1–2 GTCSs in the GBCR or the GBSR



Page36

GTCS-E1 Transmissionl When the BSC6000 uses E1 transmissions on the A

interface, a GTCS provides a maximum of 3,840 speech

channels

1300 01 02 03 07060504 08 09 10 1211

GDPUX

GSCU

GSCU

GTNU

GTNU

2714 15 16 17 21201918 22 23 24 2625

GEIUT

GEIUT

GEIUA

GEIUA

GEIUA

GEIUA

GEIUA

GEIUA

Rearboard

Frontboard

Backplane

GEIUA

GEIUA

GDPUX

GDPUX

GDPUX



Page37

GTCS-Optical Transmissionl When the BSC6000 uses STM-1 transmissions on the A

interface, a GTCS provides a maximum of 7,680 speech

channels

1300 01 02 03 07060504 08 09 10 1211

GDPUX

GSCU

GSCU

GTNU

GTNU

2714 15 16 17 21201918 22 23 24 2625

GEIUT

GEIUT

GOIUA

GOIUA

GOIUA

GOIUA

GOIUA

GOIUA

Rearboard

Frontboard

Backplane

GOIUA

GOIUA

GDPUX

GDPUX

GDPUX

GEIUT

GEIUT

GDPUX

GDPUX

GDPUX



Page38

Abbreviation

GSM Optic Interface Unit for AGOIUA

GSM Optic Interface Unit for aTerGOIUT

GSM Optic Interface Unit for PbGOIUP

GSM Optic Interface Unit for AbisGOIUB

GSM E1/T1 Interface Unit for AGEIUA

GSM E1/T1 Interface Unit for aTerGEIUT

GSM E1/T1 Interface Unit for PbGEIUP

GSM E1/T1 Interface Unit for AbisGEIUB

GSM eXtensible Processing Unit for TransmissionGXPUT

GSM eXtensible Processing Unit for Main serviceGXPUM

GSM TDM switching Network UnitGTNU

GSM Switching and Control UnitGSCU

GSM General Clock UnitGGCU

Full NameAbbreviation



Page39

Abbreviation

GSM E1/T1 Packet Unit for GbGEPUG

GSM E1/T1 High level Data Link Control Unit for AbisGEHUB

GSM Optic Gigabit ethernet Unit for AbisGOGUB

GSM Optic Gigabit ethernet Unit for AGOGUA

GSM Fast ethernet and Gigabit ethernet Unit for GbGFGUG

GSM Fast ethernet and Gigabit ethernet Unit for AbisGFGUB

GSM Fast ethernet and Gigabit ethernet Unit for AGFGUA

GSM Data Processing Unit for eXtensible serviceGDPUX

GSM Data Processing Unit for PS serviceGDPUP

GSM Data Processing Unit for CS serviceGDPUC

GSM Operation & Maintenance UnitGOMU

Full NameAbbreviation



Page40

Board- GGCUl Configured in slots 12 and 13 in the GMPS (active/standby mode)

l provides synchronous timing signals for the system

l Generates synchronous clock signals

l Keeps the consistency of synchronization information output from

the active and standby GGCUs

Matching Connector Function Port

Synchronization clock signal input port, used to input one route of external 2.048 MHz signal and 2.048 Mbit/s code stream

signals

CLKIN 0-1ReservedTESTIN

SMB male connector

ReservedTESTOUT RJ45 ReservedCOM 0-1RJ45 Output 8 kHz clock signals to the GSCU CLKOUT 0-9



Page41

Board- GTNUl Configured in slots 4 and slot 5 of the GMPS/GEPS/GTCS

(active/standby mode)

l Performs the TDM (Time Division Multiplexing) switching function

l Provides 128 K *128 K TDM switching

l Allocates TDM network resources, establishes and releases

radio links

DB14 TDM high-speed serial port, used to connect

the GTNUs between subracksTDM 0-5

Matching

connector Function Port



Page42

Board- GSCUl Configured slots 6 and 7 of the GMPS/GEPS/GTCS (active/standby

mode)

l Performs maintenance management

l Provides a GE platform for the subrack

l Provides clock information for the other boards in the same subrackexcept the GGCU in the GMPS

RJ45

10/100/1000 Mbit/s Ethernet ports, used to connect subracks

10/100/1000

BASE-T 0–910/100/1000 Mbit/s Ethernet ports, used to connect

GBAM/GOMU (Only the main subrack is connected with the GBAM/GOMU)

10/100/1000 BASE-T 10–11

Debugging portCOMClock source port, used to receive the 8 kHz clock signals

from the panel of the GGCUCLKIN

SMB maleClock test signal port, used to output clock test signalsTESTOUT

Matching

Connector Function Port



Page43

Board- GXPUMl Configured in slots 0 and 1 of the

GMPS/GEPS

(active/standby mode).

l System information management

l Channel assignment

l BTS common service management

l Performs the short message cell broadcast

RJ45GE/FE Ethernet port, reserved 10/100/1000

BASEs- T0-3

Matching

connector Function Port

l Paging control

l Voice call control

l Packet service control

l Handover

l Power control



Page44

Board- GXPUTl The GXPUT is the transmission processing unit in the

BSC6000. The active GXPUT and standby GXPUT are inserted in slots 2 and slot 3 in the GMPS or GEPS.

l The GXPUT perform LAPD links processing function of the system

RJ45GE/FE Ethernet port, reserved 10/100/1000 BASEs T0-3

Matching connector Function Port



Page45

GOIUT

GOIUT

14 16 17 18 19GOMU

20 21GEIUB

GEIUB

GEIUB

GEIUB

24 25 26 27GOMU

22 23

GXPUM

GXPUT

GXPUT

GXPUM

GTNU

GTNU

00 01 02 03 04 05

GGCU

GGCU

10 11 12 13

GSCU

GSCU06 07 08 09

15

Backplane

CPUX ,CS service processing

CPU0/1/2/3GXPUT

CPU2CPU1

CPUP,PCU maintenance、cell data broadcastCPU3

CPU0,algorithm,resource management，PS signal processingCPU0

GXPUM

FunctionCPU NumberBoard

CPU-XPUa



Page46

Board- GDPUC/X

The board is in standby stateOff

The board is in active stateOnGreenACT

The board has a fault alarmOn (or flashing)

No alarmOffRedALM

There is no power supply or the board is faulty

Off

There is power supply but the board is faulty

On

The board is testingOn for 2 seconds and off for 2 seconds

The board is in loading stateOn for 0.125 second and off for 0.125 second

The board is working normallyOn for one second and off for one second

GreenRUN

MeaningStatusColorIndicator



Page47

Board- GDPUC/GDPUXl Configured in slot 0 to slot 3, slot 8 to slot 13 of the

GTCS (N+1 redundant backup mode)

l Performs the voice and data service processing function

p Encodes and decodes speech services

p Performs data service rate adaptation

p Performs Tandem Free Operation (TFO)

p Performs voice enhancement function

p Automatically detects voice faults

p GDPUC/GDPUX provide 1320 voice channel processing

p GDPUX provide 3740 IP/HDLC packet channel processing



Page48

Board- GDPUPl Configured in slot 8 to slot 11 of GMPS, slot 8

to slot 13 of the GEPS (N+1 redundant backup

mode)

l Performs the packet data service processing

function

p GDPUP provide 1024 PDCH channel

processing(MCS-9)

p Automatically detects packet data faults



Page49

Board——GOMU l As the OM center of the BSC, The GOMUs are installed in slots 20–23

in the GMPS and work in active/standby mode. The GOMU features

high computation speed and outstanding data processing capability

l The GOMU has the following functions:

p Provides configuration management, performance management,

fault management, security management, and loading

management for the BSC

p Interfaces to the LMT/M2000 on behalf of the BSC

(18) Screw for fix the hard disk(17) Hard disk(16) OFFLINE LED(15) HD LED(14) VGA port(13) COM port

(12) ETH2 (Ethernet port)(11) ETH1 (Ethernet port)

(10) ETH0 (Ethernet port)

(9) USB port (8) Shutdown button

(7) Reset button(6) ACT LED(5) ALM LED(4) RUN LED

(3) Wrench(2) Leaf spring(1) Screw



Page50

Board——GOMU Indicator

The hard disk is not performing read and write operations

Steady off

The hard disk is performing read and write operations

FlashingGreenHD

The status of the board is switchingOn for 0.125s and off for 0.125s

The board cannot be removedOffThe board can be removedOnBlueOFFLINE

The board works in standby modeSteady offThe board works in active modeSteady onGreenACT

There is no alarmSteady offThere is a fault related to the running boardOn (or flashing)RedALM

There is no power supply or the board is faultySteady offThere is power supply but the board is faultySteady on

The board is being testedOn for 2s and off for 2s

The board is loading softwareOn for 0.125s and off for 0.125s

The board is operatingOn for 1s and off for 1sGreenRUNDescriptionStatusColorLED



Page51

EIUa OIUa PEUa FG2a GOUa

GEIUA

GEIUB

GEIUT

GEIUP

\

GOIUA

GOIUB

GOIUT

GOIUP

\

\

GEHUB

\ \

GFGUA

\ \

GGOUA

GGOUBGFGUB

GFGUG

\

\

Physical Board

A

Abis

Ater

Pb

Gb GEPUG \

Interface Board

A/Gb2 Packet over GE Optical PortGOUa

A/Abis/Gb8 Packet over FE or 2 Packet over GE Electrical InterfaceFG2a

Abis/Gb32 Packet over E1/T1 InterfacePEUa

A/Abis/Pb1 TDM over STM-1 OIUa

A/Abis/Pb32 E1/T1 InterfaceEIUa

InterfaceRINT



Page52

Board- GEIU/ GOIUl GEIU/GOIU works in active/standby mode and can be

categorized into the following types : p The GEIUB/GOIUB is the Interface Unit for the Abis interfacep The GEIUP/GOIUP is the Interface Unit for the Pb interfacep The GEIUT/GOIUT is the Interface Unit for the Ater interfacep The GEIUA/GOIUA is the Interface Unit for the A interface

GEIU

PARC

RUNALMACT

TEST

OUT

2M0

2M1

GOIU

PARC

RUNALMACT

TEST

OUT

2M0

2M1

LOS

TX

RX

E1/T1(0~7)

E1/T1(16~23)

E1/T1(24~31)

E1/T1(8~15)

SMB male connector

2.048 MHz clock output port, used to output the testing clock of the system

TESTOUT

SMB male connector

2.048 MHz clock source output port, used to output the extracted line clock as the system clock source

2M 0-1

DB44 The E1/ T1 port,0 ~31 of the used to transmit and receive E1/ T1 signals on routes 0-31

E1/ T1

0-31

Matching connector Function Interface



Page53

Board- GEIU/ GOIUl The GEIU/GOIU has the following functions:

p Processes the SS7 MTP2 protocols (performed by GEIUT/GOIUT)

p Processes the Link Access Procedure on the D channel (LAPD) protocols (performed by GEIUP/GOIUP or GEIUB/GOIUB )

p Provides maintenance links when GTCS subracks are configured at the MSC side

p Performs inter-board Tributary Protect Switching (TPS)

GEIU

PARC

RUNALMACT

TEST

OUT

2M0

2M1

GOIU

PARC

RUNALMACT

TEST

OUT

2M0

2M1

LOS

TX

RX

E1/T1(0~7)

E1/T1(16~23)

E1/T1(24~31)

E1/T1(8~15)

Transmitting optical port 155.52 Mbit/sRX

SMB male connector

2.048 MHz clock output port, used to output the testing clock of the system

TESTOUT

SMB male connector

2.048 MHz clock source output port, used to output the extracted line clock as the system clock source

2M 0-1

LC connectorReceiving optical port 155.52 Mbit/sTX

Matching connector Function Interface



Page54

Board- GEIU

OFFON24 -31 of the Used to set the protection grounding of the transmitting end of E1/ T1 links 31

1-8S6


1-8S5


1-8S4


1-8S3OFFONUnused 5-8

OFFON24 -31 of the Used to select the impedance on E1/ T1 links 31

4


3


2


1S1

120 Ω

75 Ω

Description BitDIP switch

l There are DIP switches on GEIU, the default setting is to support 75Ω



Page55

Board——FG2a

128M bps Gb throughput384TRX, 100%(HR)

6144 voice circuit

ValueLogical NamePhysical Name

GFGUGGFGUB

GFGUAFG2a

l Main function:

p 8 10M/100M FE ports, thereinto 2 GE ports(0,4);

p Provides IP routing

p Provides the routing-based backup and load sharing

p Provides Tributary Protection Switching (TPS)

between the active and standby boards



Page56

Board- GFGUA/B/G

－testing2M1

－testing2M0

RJ4510M/100M/1000 Mbit/s Ethernet ports, used to transmit 10M/100M/1000M signal

10/100/1000M

RJ4510M/100Mbit/s Ethernet ports, used to transmit 10M/100M signal

10/100M

Matching Connector

Function Port



Page57

Board- GFGUA/B/G

No data is being transmitted on the port. OffGreenACT(link)

Data is being transmitted on the port.Flash

The link is connected.OnGreenlink

The link is broken.Off

The board is in active stateOnGreenACT

The board is in standby stateOff

The board has a fault alarmOn (or flashing)

No alarmOffRedALM

There is no power supply or the board is faultyOff

There is power supply but the board is faultyOn

The board is testingOn for 2 seconds and off for 2 seconds

The board is in loading stateOn for 0.125 second and off for 0.125 second

The board is working normallyOn for one second and off for one second

GreenRUN

MeaningStatusColorIndicator



Page58

Board——PEUa

No useSMB Male Connector2M1

2M0

E1/T1(0~31)

Interface ID FunctionType

No useSMB Male Connector

0～31 E1/T1 for transmitting signal

DB44

64M bps Gb throughput384TRX, 100%(HR)

ValueLogical NamePhysical Name

GEPUGGEHUB

PEUa

l Main function

p Provides 32 E1/T1 ports





Page59

Board- GEPUG/GEHUB

SMB male connector2.048 MHz clock source output port, used to provide

extracted line clock as clock source for the system2M0–1

DB44 connectorE1/T1 port, used to transmit and receive E1/T1 signals on routes 24–31E1/T1 (24–31)




Matching ConnectorFunctionPort



Page60

Board——GOUa

384TRX, 100%(HR)

6144 voice circuit

ValueLogical Name

Physical Name

GOGUB

GOGUAGOUa

l Main function:

p Provides two GE optical ports

p Provides IP routing

p Provides the routing-based backup and load sharing





Page61

GOGUA/GOGUB

SMB male connectortesting2M1

SMB male connectortesting2M0

LC/PC connectorTransmitting optical port/Receiving optical port

RX/TX

Matching ConnectorFunctionPort



Page62





5. Network topology




Page63

Contents3. System Logical Structure

3.1 TDM Switching Subsystem

3.2 GE Switching Subsystem

3.3 Service Processing Subsystem

3.4 Service Control Subsystem

3.5 Interface and Signaling Processing Subsystem

3.6 Clock Subsystem



Page64

System Logical Structure

TDM switching subsystem

GE switching subsystem

Clock subsystem

Servicecontrol

subsystem

Serviceprocessingsubsystem

Interfaceand

signalingprocessingsubsystem

/ /E1/T1/STM-1 GE FE toBTS

/ / toSGSNE1/T1/STM-1 GE FE

/ / to MSCE1/T1/STM-1 GE FE



Page65

TDM Switching Subsystem l The Time Division Multiplexing (TDM) switching subsystem provides circuit

switched domain (CS) switching for the system

p Provides TDM bearers for the A, Abis, Ater, and Pb interfaces

p Performs TDM switching and providing circuit switched domain (CS) switching for the system

p Provides TDM bearers for the system service processing

GDPUXTDM processing bearer unit

GTNU TDM switching unit

Interface boardTDM access bearer unit

Physical entity Logical Unit



Page66

TDM Access Bearer Unitl The TDM access bearer unit provides TDM bearers for the services on

the A, Abis and Ater interface. Each board has the same hardware structure that contains backplane and sub board. By loading software, the functions of A, Abis, Ater, and Pb interface can be enabled



Page67

TDM Switching Unitl Intra-Subrack TDM Switching

GTNU (active) GTNU (standby)

Board Board Board………Connection between a board and the active GTNU through a backplane TDM path

Connection between a board and the standby GTNU through a backplane TDM path



Page68

TDM Switching Unitl Inter-Subrack TDM switching

p Inter-subrack TDM switching is carried out through mesh interconnections

p The BSC6000 supports the following mesh interconnections between a maximum of four subracks

n Mesh interconnections between the GMPS and three GEPSs

n Mesh interconnection between four GTCSs

SubrackSubrack 11

SubrackSubrack 22

SubrackSubrack 44

SubrackSubrack 33



Page69

Inter-Subrack Interconnectionsl The right figure

shows the

interconnections of GTNU crossover

cables when four

service subracksare configured

GEPS 1#

GMPS 0#GTNU GTNU

GTNU GTNUGEPS 2#GTNU GTNU

GEPS 3#GTNU GTNU



Page70

GTNU Crossover Ethernet Cable

Pin12

W1 W3

W2 W4

1

B

B

X4

X3X1

X2

A

A

Pin14

Pin1 Pin14

3



Page71

GE Switching Subsysteml The Gigabit Ethernet (GE) switching subsystem performs GE switching of

signaling and O&M interface, packet message switching

l The GSCU performs operation and maintenance of its subrack and provides GE switching for the other boards in the same subrack

GSCU (active) GSCU (standby)

Board Board Board………IntraIntra--SubrackSubrack ConnectionConnection



Page72

GE Switching Unitl Inter-subrack GE switching: star interconnection through

crossover networks

GEPSGEPS

GEPSGEPS GMPSGMPS

GEPSGEPS

GTCSGTCS

GTCSGTCS

GTCSGTCS

GTCSGTCS

l Note: In Remote GTCS mode, loading path is in Ater interface



Page73

LMT

M2000LanSwitch

GBAM/GOMU

GMPS/GSCU

GE 0

GE 1

GE 2

GE 3

GE 4

GE 5

GE 6

GE 9

GE 7

GE 8

GE 10

GE 11

FE

GE TRUNK1

GE TRUNK3

GE TRUNK4

GE TRUNK6

GE TRUNK5

GE TRUNK4

CPU FE

GE 0

GE 1

GE 0

GE 1

GE 0

GE 1

1＃GEPSGE TRUNK2

GE Switching Interconnection

GE 0

GE 1

2＃GEPS

3＃GEPS

GTCS Centre

Cross LAN cables

GSCU0

GSCU0 GSCU1

GSCU1



Page74

Questionsl What is the difference between the local GTCS and the remote

GTCS?

p The local GTCS connects with the GMPS through an Ethernet cable.Only the Ater connection path should be configured

p The remote GTCS connects with the GMPS through E1 transmission. Ater connection path as well as the Ater OML and the Ater signaling link should be configured

p When the Ethernet cable between the GTCS and the GMPS or GEPS is equal to or longer than 10 m, the remote GTCS should be configured



Page75

Service Processing Subsysteml The hardware entity of the service processing

subsystem is the GDPUC/X board

p Transcoding

p Rate adaptation

l Every board can process 1320

circuits in A interface

l Works in resource pool mode



Page76

Service Control Subsystem

l The hardware entities:

p The GXPUM board

p The GXPUT board

p The GOMU board

p The GSCU board in the GTCS subrack



Page77

Service Control Subsysteml The GXPUM board performs the main service processing of the

BSC6000

p paging control, system information management, channel assignment, and BTS common service management

p voice call control, PS service control, handover, and power control

l The GXPUT board performs the cell broadcast function

l The GOMU server performs BTS O&M management

l The GSCU board in the GTCS subrack performs the TC resource pool management



Page78

Interface Processing Subsystem

l The interface and signaling subsystem provides interfaces of BSC, BTS, and NSS, which performs signaling processing function of data link layerp Provides A/Abis/Ater interfaces

p Supports cell broadcast message service processing



Page79


l Traffic Processing

p GEIUB/GOIUB supports 256 TRXs

p GEIUT/GOIUT supports 3840 speech channels

p GEIUP/GOIUP supports 3840 16Kbps PCICs

p GEIUA supports 960 speech channels

p GOIUA supports 1920 speech channels



Page80


l Traffic Processing

p GFGUB supports 384 TRXs

p GFGUA supports 6144 speech channels

p GFGUG supports 128M bps

p GOGUA supports 6144 speech channels

p GOGUB supports 384 TRXs

p GEHUB supports 384 TRXs

p GEPUG supports 64M bps



Page81

Clock Subsystem l Hardware entity is the GSM General Clock Unit (GGCU)

l Clock sources

p Building Integrated Timing Supply System (BITS)

n 2 MHz clock

n 2 Mbit/s clock

n The 2 Mbit/s clock source has higher anti-interference capabilities than the 2 MHz clock source

p Line clock

n The GTCS extracts line clock from the A interface. The GEIUA in the GTCS processes the clock and generates 8 kHz

n The GTCS sends the 8 kHz clock to the GGCU in the GMPS by the Ater interface

n The GEIUA in the GTCS sends the 8 kHz clock to the GSCU by the backplane in the GTCS. The GSCU forwards the 8 kHz clock to the other boards in the GTCS

p Local free-run clock



Page82

Clock Configurationl Configuration for the clock in the GGCU

p Without BITS

n GGCU extracts the synchronization reference clock from the

interface board of GMPS

n Other distribution cables are not required

n GGCU chooses the clock reference of backplane

p With BITS

n GGCU should be equipped with distribution cables

n BITS has high priority



Page83

GSCU

Active/standby GGCU

in GMPS

Service

board

Service

board

GMPS

BITS Line Clock

Backplane transmission Distribution cable

transmission

Backplane transmission

System Clock Scheme

GSCU

Service

board

Service

board

GEPS


GSCUS

ervice board

Service

board

GEPS




Page84

Clock Synchronization Interconnection

GMPSGGCUGGCU

GEPSGSCU GSCU

Y-shaped cable …

…

CLKIN CLKIN

GEPSGSCU GSCU

CLKIN CLKIN

……

1 12

1

8

1

8

1

8

W2

W3

X2

X3

W1X1



Page85





5. Network topology




Page86

Contents4. System Signal Flow

4.1 System Signal Flow

4.2 O&M Signal Flow

4.3 Alarm Channel



Page87

CS Service Signal Flow (BM/TC separated)

Ater

A

Abis

BTSMSMSC

GEIUB

GTNU

GEIUT

GMPS/GEPS

GEIUT

GTNU

GEIUA

GTCS

GDPUX

l Abis over TDM+A over TDM

Front board E1/T1 cable TDM switching on the backplane

Rear board



Page88

CS Service Signal Flow (BM/TC separated)

Ater

A

Abis

BTSMS

MSC

GEHUB

GTNU

GEIUT

GMPS/GEPS

GEIUT

GTNU

GEIUA

GTCS

GDPUX

l Abis over HDLC+A over TDM


Rear board



Page89

Voice Service Signal Flow (BM/TC combined)l Abis over TDM+A over TDM

A

Abis

BTSMS

MSC

GEIUB

GMPS/GEPS

GTNU

GEIUA

GDPUX

A Board is GEIUA/GOIUA

Abis Board is GEIUB/GOIUB

Backplane GE SwitchingBackplane TDM Switching

E1/T1 cableFront BoardRear Board



Page90

Voice Service Signal flow (BM/TC combined)l Abis Over HDLC/IP+A Over TDM

AAbis

BTSMS MSC

GEHUB

GMPS/GEPS

GTNU

GEIUA

GDPUX

GSCU

A interface board is GEIUA/GOIUA

When Abis is Over IP, interface board is GFGUB/GOGUB





Page91

PS Service Signal Flow (BM/TC separated)l Abis over TDM

GbAbis

BTSMS

GEIUB

GTNU

GEPUG

GMPS/GEPS

SGSN

GSCU

GDPUP


Rear board



Page92

PS Service Signal Flow (BM/TC separated)l Abis over HDLC

GbAbis

BTSMS

GMPS/GEPS

SGSN

GSCU

GEPUG

GSCU

GDPUP

GEHUB


Rear board



Page93

Packet Service Signal Flow (Outer PCU,BM/TC combined)l Abis Over TDM

p When Abis interface is over HDLC/IP, BSC6000 doesn’t

support outer PCU

Pb GbAbis

BTSMS PCU

GEIUB

GTNU

GEIUP

GMPS/GEPS

SGSN





Page94

Packet Service Signal Flow (Built-in PCU,BM/TC combined)l Abis Over TDM

GbAbis

BTSMS

GEIUB

GTNU

GEPUG

GMPS/GEPS

SGSN

GSCU

GDPUP

Gb Board is GFGUG/GEPUG

Backplane GE SwitchingBackplane TDM SwitchingE1/T1 cable

Front BoardRear Board



Page95

Packet Service Signal Flow (Built-in PCU,BM/TC combined)

GbAbis

BTSMS

GMPS/GEPS

SGSN

GSCU

GEPUG

GSCU

GDPUP

GEHUB

When Abis is Over IP, board is GFGUB/GOGUB



l Abis Over HDLC/IP



Page96

SS7 on the A Interface (BM/TC separated)

The signals are processed through the MTP2, and then sent to the GXPUM in the mode of internal

signaling flow

Ater

AMSC

GSCU

GEIUT

GMPS/GEPS

GEIUT

GTNU

GEIUA

GTCS

GXPUM


Rear board



Page97

SS7 Signal Flow (BM/TC combined)

Through the processing of MTP2 model, it will be transmitted to GXPUM as intra-signal;

A MSC

GSCU

GMPS/GEPS

GEIUA

GXPUM





Page98

Abis Interface Signal (BM/TC separated)

Abis

BTSMS

Abisboard

GSCU

GMPS/GEPS

GXPUT

GXPUM

GSCU


Rear board



Page99

Abis Interface Signal (BM/TC combined)l Abis interface board should be configured by the

requirement as following:

p Abis over TDM：GEIUB/GOIUB

p Abis over HDLC：GEHUB

p Abis over IP：GFGUB

l Signal processing flow:

p GXPUT/GXPUM process LAPD and RR protocol;

p GXPUM process BTSM protocol;



Page100

Abis Interface Signal (BM/TC combined)

Abis

BTSMS

Abis Board

GSCU

GMPS/GEPS

GXPUT

GXPUM

GSCU





Page101

Signaling flow on Gb interface (BM/TC separated)

Gb

GSCU

GEPUG

GMPS/GEPS

SGSN

GXPUM


Rear board



Page102

Gb Signal Flow (Inner PCU,BM/TC combined)l The BSC internal signaling flow from the Gb interface is as follows:

p The signaling is transmitted to the GMPS/GEPS over the Gb interface.

If the sub NS layer of the NS protocol complies with the FR protocol,

the Gb interface board is the GEPUG. If the sub NS layer of the NS

protocol complies with the IP protocol, the Gb interface board is the

GFGUG.

p The GSCU transmits the signaling to the GXPUM.

p The GXPUM processes the signaling according to the NS and BSSGP

protocols.



Page103

Gb Signal Flow (Inner PCU) (BM/TC combined)

Gb

GSCU

GEPUG

GMPS/GEPS

SGSN

GXPUM

Gb board should be GFGUG/GEPUG





Page104

O&M Flow (Local GTCS,BM/TC separated)

GSCU

GE on the backplane

Inter-subrack Cable

GMPS

Service board

GEPS GTCS

GSCU

GSCU

Service board

Service board

Main GTCS

GSCU

Service board

GOMU

L

M

T



Page105

O&M Flow(Remote GTCS,BM/TC separated)

GEPS GTCS

Main GTCSGMPS

EIUT

GOMU

GSCU

EIUT

GSCU

GSCU

GSCU

GE on the backplane

HDLC

Inter-subrack Cable

Service board

Service board

Service board

Service board

L

M

T



Page106

Operation Maintenance Flow (BM/TC combined)

GSCU

GMPS

GSCU

L

M

T

Service

Board

GEPS

OMU

Hardware is GBAM/GOMU

Service

Board




Page107

Connection of Alarm Box l Connection scheme

Alarm management

module

GOMU Alarm box

Convert Management System

LMT

Serial CableSerial Cable



Page108

Report of Alarm from Local Subrack

GMPS

GSCU GOMULMT

Convert Alarm box

GEPS

GSCU

Service board

Service board

Generate/Generate/Shield Shield AlarmsAlarms

Report Report AlarmsAlarms

Send Send AlarmsAlarms

&Record &Record logslogs

Output Output Alarms Alarms &Drive &Drive

Alarm boxAlarm box

Generate Generate Sounds&LightsSounds&Lights

BTS



Page109

Report of Alarm from Remote Subrack

GMPS

GEIUT

GOMULMT

Convert Alarm box

GTCS

GEIUT

Service board

Service board

GSCU

GSCU

HDLCHDLCLinkLink



Page110





5. Network topology




Page111

Abis over TDMl Abis over E1/T1



Page112

Abis over TDMl Abis over STM-1



Page113

Abis over HDLC



Page114

A interface over TDM



Page115

A interface over STM-1



Page116

Ater interface over TDM



Page117

Gb interface over FR



Page118

Gb interface over IP



Page119








Page120

Hardware configuration Principlel Service processing boards

p Single GDPUX/GDPUC supplies 960 voice circuits coding/decoding

(1320(FR) at most), 960(HR) at least), GDPUX/ GDPUC work as

resource pool in subrack;

p DPUX supports 3740 voice circuits frame conversion or transmission

between TRAU/IP/HDLC and TRAU;

p Single GDPUP supplies 1024 MCS-9 PDCH channel of processing

packet service, supports 1024 cells at most, GDPUP is resource pool of

whole system and could be inserted in rear slots;

p Number of GDPUP+GDPUX+GDPUC couldn’t be more than 10;



Page121

Hardware configuration Principlel GXPUM/GXPUT

p GXPUM must be inserted in 0&1 slots of GMPS/GEPS fixedly;

p GXPUT is inserted in 2&3 slots of GMPS/GEPS by requirement, when

the TRX of current subrack is less than 256, CXPUT may not be

configured, if needs, it’s certainly;

l Interface Specification

p Abis: GEIUB/GOIUB support 256TRX(HR)at most, GEHUB

GFGUB/GOGUB also support 384TRX(HR)at most;

p A: GOIUA/GEIUA are configured 5 groups per subrack at most, if A

interface uses optical transport, single subrack could access 9600

CIC at most;



Page122

Typical Configurationl 512TRX

p Configuration A, Outer PCU, A Interface Optical, Abis Interface E1/T1

p Configuration A, Inner PCU, A Interface Optical, Abis Interface E1/T1

p Configuration B, Outer PCU, A Interface Optical, Abis Interface E1/T1

p Configuration B, Inner PCU, A Interface Optical, Abis Interface E1/T1

l 1280TRX

p Configuration A/B, Outer PCU, A Interface Optical, Abis Interface

E1/T1

p Configuration A/B, Inner PCU, A Interface Optical, Abis Interface

E1/T1



Page123

Typical Configurationl Full Configuration 2048TRX

p Configuration A, Outer PCU, A Interface Optical, Abis

Interface E1/T1

p Configuration B, Outer PCU, A Interface Optical, Abis

Interface E1/T1

p Configuration A, Inner PCU, A Interface Optical, Abis Interface

E1/T1

p Configuration B, Inner PCU, A Interface Optical, Abis Interface

E1/T1



Page124

Typical Configuration — 512TRX (BM/TC separated) l Outer PCU



Page125

Typical Configuration — 512TRX (BM/TC separated)l Inner PCU



Page126

Typical Configuration — 1280TRX (BM/TC separated)l 1GMPS+1GEPS+2GTCS, Inner PCU



Page127

Typical Configuration — 2048TRX (BM/TC separated)l Outer PCU

l Inner GOMU

l GOIUA is the A interface board



Page128

Typical Configuration — 2048TRX (BM/TC separated)l Inner PCU

l Inner GOMU

l GOIUA is the A interface board



Page129

Typical Configuration — 512TRX (BM/TC combined)l Inner PCU，A interface uses

STM-1 as transport model,

Abis interface uses E1/T1 as

transport model, supports 512TRX at most.



Page130

Typical Configuration — 1028TRX (BM/TC combined)l Outer PCU，A interface uses STM-1

as transport model, Abis interface uses

E1/T1 as transport model, supports

1028TRX at most.



Page131

Typical Configuration — 1028TRX (BM/TC combined)l Inner PCU，A interface

uses STM-1 as transport

model, Abis interface uses

E1/T1 as transport model, supports 1028TRX at most.



Page132

Typical Configuration — 2048TRX (BM/TC combined)l Configuration:

1GIMS+1GMPS+2GEPS，

l Supports 2048TRX at most.

p Configuration B, Inner GOMU

p Outer PCU

p A interface uses STM-1 as transport model

p Abis interface uses E1/T1 as transport

model



Page133

Typical Configuration —2048TRX (BM/TC combined)l Configuration:1GIMS+1GMPS+2

GEPS

l Supports 2048TRX

p Configuration B

p Inner GOMU

p Inner PCU

p STM-1 is A interface physical

transport

p E1/T1 is Abis interface

physical transport



Page134

Scene Onel TC/BM combination or separation

p If GTCS is configured as remote subrack, TC/BM separation mode have to be chose;

p If GTCS is configured as local subrack, BSC and MSC are in same house, BM/TC

combination mode is recommended;

n The advantage is low cost, rack, board and location are saved, power is also saved;

n E1/T1 board used as A interface board will reduce the capacity of GTCS, so optical

board is recommended as A interface board;

p If GTCS is local and be configured as separation mode, the optical cable is recommended

as Ater interface in order to reduce the physical line setting;

=+

BM/TC separated

BM/TC combined

How to choose TC/BM

combination or

separation？



Page135

Scene Twol How to choose built-in PCU？

p Suggest to choose inner PCU at V9R8 new office.

p Advantages of built-in PCU

n Low cost;

n PS performance more super;

n Data configuration and hardware installation more simple;

p Outer PCU

n Be used in lower version of BSC32 and V9R3, or in expansion project, new office of

V9R8 is not recommended;

p When Abis are configured as Abis Over HDLC or Abis Over IP, outer PCU is not

supported;What time we will

choose built-in

PCU？



Page136

Scene Threel Whether A interface over IP or not?

p Core network equipment produced by HUAWE is needed, A interface over IP

isn’t standard, BSC6000 can’t supported to connect with other vender’s

equipments currently;

p Advantages of A interface over IP

n IP transport accord with 3GPP roadmap, save future investment;

n Wide transport band, and it’s convenient for operator to develop new service;

n IP network is low cost and short time for construct and convenient operation,

meanwhile it’s effective to reduce the expense of CAPEX and OPEX;

n Support TrFO function, reduce voice coding and decoding, retrench TC

resource, enhance the voice quality;

p Attention: external time is needed.How to choose A

interface over IP?



Page137

Scene Fourl How to choose Abis over HDLC?

l Abis interface support three transport modes:

p Abis over TDM: physical transport medium is E1/T1/STM-1;

p Abis over HDLC: physical transport medium is E1/T1, it doesn’t support optical port;

n Save abis interface transport resource, reduce CAPEX;

n One E1 could bear 24TRX(FR) or 21TRX(HR);

p Abis over IP：It supports FE/GE ports;

n Low CAPEX and it’s profitable for 2G/3G transport jointly;

n IP transport has better adaptability and accord with packet service flow model;

n Simple configuration, don’t consider Abis interface physical link resource and

correspond with air channel resource;

l Abis over HDLC mainly used in sites which transport resource is scarce, please decide which

transport model will be used by actual network structure.

Abis support TDM、IP and HDLC model，how to

choose？



Page138

Summaryl Introduce features and functions of BSC6000

l Describe components and functions of racks, subracks and

boards in BSC6000

l Describe functions of logical structure and cable

connections in every logical part

l List configuration principles and typical configurations



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Documents

BSC Hardware Structure