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www.huawei.com
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
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Page2
Referencesl HUAWEI BSC6000 Hardware Description
l HUAWEI BSC6000 Product Description
l HUAWEI BSC6000 Performance Description
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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
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Page4
Contents1. System Description
2. Hardware Structure
3. System Logical Structure
4. System Signal Flow
5. Network topology
6. Typical Configuration
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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
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Page6
BSC6000 Version Evolution
V9R1C01V9R1C03
V9R8C01
V9R3C001
R1 R3 R8
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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
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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
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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
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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
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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
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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).
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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
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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
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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
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Page16
Contents1. System Description
2. Hardware Structure
3. System Logical Structure
4. System Signal Flow
5. Network topology
6. Typical Configuration
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Page17
Contents2. Hardware Structure
2.1 Rack
2.2 Subrack
2.3 Board
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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
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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
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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
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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
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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
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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
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Subrack
GMPS/GEPSGMPS/GEPS GTCSGTCSBTSBTS
CBCCBC
MSCMSC
BMBM TCTC
AbisAbis AterAter AA
CbCb
LMTLMT
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Abbreviation
Local Maintenance TerminalLMTGSM TransCoder SubrackGTCSGSM Main Processing SubrackGMPSGSM Extended Processing SubrackGEPS
Full Name Abbreviation
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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
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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
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Page28
Subrack——GMPS(BM/TC combined)
=+
BM/TC seperated BM/TC combined
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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Page54
Board- GEIU
OFFON24 -31 of the Used to set the protection grounding of the transmitting end of E1/ T1 links 31
1-8S6
OFFON16 -23 of the Used to set the protection grounding of the transmitting end of E1/ T1 links 23
1-8S5
OFFON8 -15 of the Used to set the protection grounding of the transmitting end of E1/ T1 links 15
1-8S4
OFFON0 -7 of the Used to set the protection grounding of the transmitting end of E1/ T1 links 7
1-8S3OFFONUnused 5-8
OFFON24 -31 of the Used to select the impedance on E1/ T1 links 31
4
OFFON16 -23 of the Used to select the impedance on E1/ T1 links 23
3
OFFON8 -15 of the Used to select the impedance on E1/ T1 links 15
2
OFFON0 -7 of the Used to select the impedance on E1/ T1 links 7
1S1
120 Ω
75 Ω
Description BitDIP switch
l There are DIP switches on GEIU, the default setting is to support 75Ω
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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
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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
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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
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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
p Provides Tributary Protection Switching (TPS)
between the active and standby boards
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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)
DB44 connectorE1/T1 port, used to transmit and receive E1/T1 signals on routes 16–23E1/T1 (16–23)
DB44 connectorE1/T1 port, used to transmit and receive E1/T1 signals on routes 8–15E1/T1 (8–15)
DB44 connectorE1/T1 port, used to transmit and receive E1/T1 signals on routes 0–7E1/T1 (0–7)
Matching ConnectorFunctionPort
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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
p Provides Tributary Protection Switching (TPS)
between the active and standby boards
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Page61
GOGUA/GOGUB
SMB male connectortesting2M1
SMB male connectortesting2M0
LC/PC connectorTransmitting optical port/Receiving optical port
RX/TX
Matching ConnectorFunctionPort
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Page62
Contents1. System Description
2. Hardware Structure
3. System Logical Structure
4. System Signal Flow
5. Network topology
6. Typical Configuration
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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
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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
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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
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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
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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
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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
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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
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Page70
GTNU Crossover Ethernet Cable
Pin12
W1 W3
W2 W4
1
B
B
X4
X3X1
X2
A
A
Pin14
Pin1 Pin14
3
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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
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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
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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
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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
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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
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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
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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
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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
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Page79
Interface Processing Subsystem
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
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Page80
Interface Processing Subsystem
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
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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
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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
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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
Backplane transmission
GSCUS
ervice board
Service
board
GEPS
Backplane transmission
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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
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Page85
Contents1. System Description
2. Hardware Structure
3. System Logical Structure
4. System Signal Flow
5. Network topology
6. Typical Configuration
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Page86
Contents4. System Signal Flow
4.1 System Signal Flow
4.2 O&M Signal Flow
4.3 Alarm Channel
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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
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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
Front board E1/T1 cable TDM switching on the backplane
Rear board
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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
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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
Backplane GE SwitchingBackplane TDM Switching
E1/T1 cableFront BoardRear Board
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Page91
PS Service Signal Flow (BM/TC separated)l Abis over TDM
GbAbis
BTSMS
GEIUB
GTNU
GEPUG
GMPS/GEPS
SGSN
GSCU
GDPUP
Front board E1/T1 cable TDM switching on the backplane
Rear board
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Page92
PS Service Signal Flow (BM/TC separated)l Abis over HDLC
GbAbis
BTSMS
GMPS/GEPS
SGSN
GSCU
GEPUG
GSCU
GDPUP
GEHUB
Front board E1/T1 cable TDM switching on the backplane
Rear board
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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
Backplane GE SwitchingBackplane TDM Switching
E1/T1 cableFront BoardRear Board
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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
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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
Backplane GE SwitchingBackplane TDM SwitchingE1/T1 cable
Front BoardRear Board
l Abis Over HDLC/IP
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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
Front board E1/T1 cable TDM switching on the backplane
Rear board
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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
Backplane GE SwitchingBackplane TDM SwitchingE1/T1 cable
Front BoardRear Board
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Page98
Abis Interface Signal (BM/TC separated)
Abis
BTSMS
Abisboard
GSCU
GMPS/GEPS
GXPUT
GXPUM
GSCU
Front board E1/T1 cable TDM switching on the backplane
Rear board
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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;
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Page100
Abis Interface Signal (BM/TC combined)
Abis
BTSMS
Abis Board
GSCU
GMPS/GEPS
GXPUT
GXPUM
GSCU
Backplane GE SwitchingBackplane TDM SwitchingE1/T1 cable
Front BoardRear Board
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Page101
Signaling flow on Gb interface (BM/TC separated)
Gb
GSCU
GEPUG
GMPS/GEPS
SGSN
GXPUM
Front board E1/T1 cable TDM switching on the backplane
Rear board
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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.
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Page103
Gb Signal Flow (Inner PCU) (BM/TC combined)
Gb
GSCU
GEPUG
GMPS/GEPS
SGSN
GXPUM
Gb board should be GFGUG/GEPUG
Backplane GE SwitchingBackplane TDM SwitchingE1/T1 cable
Front BoardRear Board
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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
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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
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Page106
Operation Maintenance Flow (BM/TC combined)
GSCU
GMPS
GSCU
L
M
T
Service
Board
GEPS
OMU
Hardware is GBAM/GOMU
Service
Board
Backplane GE SwitchingBackplane TDM SwitchingE1/T1 cable
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Page107
Connection of Alarm Box l Connection scheme
Alarm management
module
GOMU Alarm box
Convert Management System
LMT
Serial CableSerial Cable
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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
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Page109
Report of Alarm from Remote Subrack
GMPS
GEIUT
GOMULMT
Convert Alarm box
GTCS
GEIUT
Service board
Service board
GSCU
GSCU
HDLCHDLCLinkLink
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Page110
Contents1. System Description
2. Hardware Structure
3. System Logical Structure
4. System Signal Flow
5. Network topology
6. Typical Configuration
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Page111
Abis over TDMl Abis over E1/T1
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Page112
Abis over TDMl Abis over STM-1
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Page113
Abis over HDLC
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Page114
A interface over TDM
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Page115
A interface over STM-1
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Page116
Ater interface over TDM
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Page117
Gb interface over FR
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Page118
Gb interface over IP
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Page119
Contents1. System Description
2. Hardware Structure
3. System Logical Structure
4. System Signal Flow
5. Typical Configuration
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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;
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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;
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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
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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
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Page124
Typical Configuration — 512TRX (BM/TC separated) l Outer PCU
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Page125
Typical Configuration — 512TRX (BM/TC separated)l Inner PCU
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Page126
Typical Configuration — 1280TRX (BM/TC separated)l 1GMPS+1GEPS+2GTCS, Inner PCU
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Page127
Typical Configuration — 2048TRX (BM/TC separated)l Outer PCU
l Inner GOMU
l GOIUA is the A interface board
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Page128
Typical Configuration — 2048TRX (BM/TC separated)l Inner PCU
l Inner GOMU
l GOIUA is the A interface board
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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.
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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.
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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.
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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
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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
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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?
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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?
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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?
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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?
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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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Thank youwww.huawei.com
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