Upload
ngoy-saro
View
255
Download
5
Embed Size (px)
DESCRIPTION
hi
Citation preview
www.huawei.com
Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
BSC6000 Hardware Structure
Page1Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
ForewordThis 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
Page2Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
ReferencesHUAWEI BSC6000 Hardware Reference
HUAWEI BSC6000 System Description
HUAWEI BSC6000 Architecture and Principles
Page3Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
ObjectivesUpon completion of this course, you will be able to:
Understand HUAWEI BSC6000 function and features
Master HUAWEI BSC6000 hardware structure
Understand HUAWEI BSC6000 system principle
Master HUAWEI BSC6000 typical configuration
Page4Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Contents1. System Description
2. Hardware Structure
3. System Logical Structure
4. System Signal Flow
5. Typical Configuration
Page5Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Contents1. System Description
2. Hardware Structure
3. System Logical Structure
4. System Signal Flow
5. Typical Configuration
Page6Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Location of the BSC6000The HUAWEI BSC6000 is a new generation GSM BSC
product after the HUAWEI BSC32 (previous BSC)
SGSN
MSC
GGSN
.
HLR
Abis
Pb
BSC6000
MS BTS
MSBTS
MSBTS
PCU6000
Um PDN
AGs
Gb
Page7Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Features of the BSC6000 System Large capacity, high integration
Supporting 2048TRX at the full rate; supporting
2048TRX at the half rate
Maximum of traffic: 12,000 Erl; BHCA : 2,340,000
In case of using the E1 interface board, the maximum
of the system is four cabinets
In case of using the STM-1 interface board, the
maximum of the system is three cabinets
Page8Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Features of the BSC6000 System Low cost, low power consumption
256TRX power consumption( including GTCS)1640W (A interface in E1 mode)
1570W (A interface in STM-1 mode)
2048TRX power consumption( including GTCS)6920W (A interface in E1 mode)
5620W (A interface in STM-1 mode)
Flexible configuration Supporting multiple types of networking between BSC and BTS
Multiple clock sources
Page9Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Features of the BSC6000 System Advanced management algorithm for radio resource
HW_II Power Control Algorithm
HW_II Handover Algorithm: supporting about 10 handover
algorithms, such as hierarchical handover, layer handover, and
PBGT handover
Multiple radio resource allocation technology and flexible radio
channel switch mechanism
Page10Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Features of the BSC6000 System Smooth capacity expansion and upgrade
Supporting smooth, in-service capacity expansion
Supporting in-service patching
Strong performance, advanced design
Supporting 2M signaling link
Supporting local multiple signaling points (at most 4)
Supporting TC resource pool
Supporting full-index report performance statistics
Page11Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Contents1. System Description
2. Hardware Structure
3. System Logical Structure
4. System Signal Flow
5. Typical Configuration
Page12Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Contents2. Hardware Structure
2.1 Rack
2.2 Subrack
2.3 Board
Page13Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Structure of RackModel: Huawei N68-22 cabinet
Dimension: 600mm (width) x800mm (depth) x
2200mm (height)
Weight: 150 kgs of Empty cabinet; 350 kgs of
full configuration
BSC6000 rack type
GBCR: GSM BSC Control Processing Rack
GBSR: GSM BSC Service Processing Rack
Page14Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
GBCRGBCR (GSM BSC Control Processing Rack ) must be configured with
GMPS (GSM main processing subrack)
GBAM (GSM Back Administration Module)
GIMS( GSM Integrated Management System )
One KVM (keyboard, video and mouse)
One LAN Switch
One GBAM (GSM Back Administration Module) server
GBAM
LAN Switch
KVM
Power distribution
box
Subrack
Air defencesubrack
Cabling subrack
GIMS
Page15Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
GBSRGBSR (GSM BSC Service
Processing Rack ): It is only
configured with subracks
One service rack can be
configured with three subracks
at most according to the
requirement
Subrack
Subrack
Subrack
Page16Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
GBAMThe GBAM is a server installed with Linux system and OMU
software, which is used to perform operation and
maintenance for the BSC6000
Controls the communications between the LMT and boards
Processes commands from the LMT
Filters the results from boards and then returns the results to the
LMT
Page17Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
GBAM Module Port
Display port
RJ45 NIC RJ45 NIC port RJ45 Serial port
RJ45 NIC 10M/100M adaptive Ethernet port
Port for the mouse and keyboard
DC input power socket Grounding screw
Power button CD-ROM
Page18Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
KVMThe KVM is a device integrating a
keyboard, a monitor, and a mouse.
It is the operating platform of the
GBAM
DC input power socket
Power switch
Port for display cable Port for keyboard cable Port for mouse cable
Page19Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Fan Box PFCU (Fan Control Unit)
Monitors the running status of the fans in the fan box
Reports the working status of the fan box to GSCU
Detects the temperature of the fan box with a temperature sensor
Shows the current status of fan box and alarms through LED
PFPU (Fan Power Unit)
provides power supply for nine fans
keeps the voltage stable
Page20Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Power Distribution Box Checks two channels of - 48 V input voltage
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
Reports the status of the power distribution box and exchanges
O&M information with the GSCU
Emits audio and visual alarms
Page21Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
SubrackThe width of subrack is 19
inches
A backplane is in the middle of
the subrack, and boards are
inserted from the front and the
rear of the subrack
Both the front subrack and the
rear subrack provide 14 slots
Numbered as 00 --13 from left to
right at the front
Numbered as 14--27 from right
to left at the back
Board
Fan box
Cabling Trough
Front of subrack Rear of subrack
Page22Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Subrack
GMPS/GEPSGMPS/GEPS GTCSGTCSBTSBTS
CBCCBCPCUPCU
MSCMSC
BMBM TCTC
AbisAbis AterAter AA
PbPb CbCb
GBAMGBAM
LMTLMT
Page23Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Abbreviation
Abbreviation Full Name GBAM GSM Back Administration ModuleGEPS GSM Extended Processing SubrackGMPS GSM Main Processing SubrackGTCS GSM TransCoder SubrackLMT Local Maintenance Terminal
Page24Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
GMPSConfigured in the controlling cabinet (GBCR)Performs the basic service processing Performs operation maintenance functionsProvides system clock—With GGCU Processes a maximum of 512 TRXs in full configuration
1300 01 02 03 07060504 08 09 10 1211
GXPUM
GXPUM
GSCU
GSCU
GTNU
GTNU
2714 15 16 17 21201918 22 23 24 2625
GEIUP
GEIUP
GEIUT
GEIUT
GEIUB
GEIUB
GEIUB
GEIUB
Rear board
Front board
Backplane
GGCU
GGCU
GXPUC
GXPUC
GEIUB
GEIUB
GEIUB
GEIUB
GEIUB
GEIUB
Different Different from from GEPSGEPS
Page25Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
GMPS
Front boardThe GXPUM Slot 0-1
The GTNU Slot 4-5
The GSCU Slot 6-7
The GGCU Slot 12-13
The GEIUB Slot 18-27
The GEIUT Slot 16-17
The GEIUP Slot 14-15
Real board
Page26Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
GEPSPerforms basic service processing
0 ~3 GEPSs can be configured in GBCR or GBSR
Processes a maximum of 512 TRXs in full configuration
1300 01 02 03 07060504 08 09 10 1211
GXPUM
GXPUM
GSCU
GSCU
GTNU
GTNU
2714 15 16 17 21201918 22 23 24 2625
GEIUP
GEIUP
GEIUT
GEIUT
GEIUB
GEIUB
GEIUB
GEIUB
Rear board
Front board
Backplane
GEIUB
GEIUB
GEIUB
GEIUB
GEIUB
GEIUB
Page27Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
GEPS
Front boardThe GXPUM Slot 0-1
The GTNU Slot 4-5
The GSCU Slot 6-7
The GEIUB Slot 18-27
The GEIUT Slot 16-17
The GEIUP Slot 14-15
Real board
Page28Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
GTCS-E1 TransmissionPerforms transcoding, rate adaptation and sub-multiplexing
Provides a maximum of 3,840 speech channels when A
interface adopts E1 transmission
1300 01 02 03 07060504 08 09 10 1211
GDPUC
GSCU
GSCU
GTNU
GTNU
2714 15 16 17 21201918 22 23 24 2625
GEIUT
GEIUT
GEIUA
GEIUA
GEIUA
GEIUA
GEIUA
GEIUA
Rear board
Front board
Backplane
GEIUA
GEIUA
GDPUC
GDPUC
GDPUC
GDPUC
Page29Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
GTCS-Optical TransmissionPerforms transcoding, rate adaptation and sub-multiplexing
Provides a maximum of 7,680 speech channels when A
interface adopts STM-1 transmission
1300 01 02 03 07060504 08 09 10 1211
GDPUC
GSCU
GSCU
GTNU
GTNU
2714 15 16 17 21201918 22 23 24 2625
GEIUT
GEIUT
GOIUA
GOIUA
GOIUA
GOIUA
GOIUA
GOIUA
Rear board
Front board
Backplane
GOIUA
GOIUA
GDPUC
GDPUC
GDPUC
GEIUT
GEIUT
GDPUC
GDPUC
GDPUC
GDPUC
GDPUC
Page30Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
GTCS
Front board
The GDPUC Slot 9-13
The GTNU Slot 4-5
The GSCU Slot 6-7
The GEIUA Slot 18-27
The GEIUT Slot 14-17
Real board
Page31Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Abbreviation Abbreviation Full name GGCU GSM General Clock UnitGSCU GSM GE switching Network UnitGTNU GSM TDM Switching UnitGXPUC GSM Extended Processing Unit for Cell broadcast
serviceGXPUM GSM Extended Processing Unit for Main serviceGDPUC GSM Data Processing Unit for CS serviceGEIUA GSM E1/T1 Interface Unit for AGEIUB GSM E1/T1 Interface Unit for AbisGEIUP GSM E1/T1 Interface Unit for PbGEIUT GSM E1/T1 Interface Unit for AterGOIUA GSM Optic Interface Unit for AGOIUB GSM Optic Interface Unit for AbisGOIUP GSM Optic Interface Unit for PbGOIUT GSM Optic Interface Unit for Ater
Page32Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Board- GGCUConfigured in slots 12 and 13 in the GMPS (active/standby mode)
provides synchronous timing signals for the system
Generates synchronous clock signals
Keeps the consistency of synchronization information output from
the active and standby GGCUs
GGCU
PARC
RUNALMACT
ATN-IN
8
9
COM0
COM1
0
1
2
3
4
5
6
7
CLK
OU
TTE
STIN
TEST
OU
TC
LKLI
N1
CLK
LIN
0
Port Function Matching Connector
CLKOUT 0-9 Output 8 kHz clock signals to the GSCU RJ45 COM 0-1 Reserved RJ45
TESTOUT ReservedTESTIN Reserved
CLKIN 0-1 Synchronization clock signal input port, used to input one route of external 2.048 MHz signal and 2.048 Mbit/s code stream
signals
SMB male connector
Page33Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Board- GSCUConfigured slots 6 and 7 of the GMPS/GEPS/GTCS (active/standby mode)
Performs maintenance management
Provides a GE platform for the subrack
Provides clock information for the other boards in the same subrackexcept the GGCU in the GMPS
Port Function Matching
Connector 10/100/1000
BASE-T 0–910/100/1000 Mbit/s Ethernet ports, used to connect
subracksRJ45 10/100/1000
BASE-T 10–1110/100/1000 Mbit/s Ethernet ports, used to connect GBAM
(Only the main subrack is connected with the GBAM)COM Debugging port
CLKIN Clock source port, used to receive the 8 kHz clock signals
from the panel of the GGCUTESTOUT Clock test signal port, used to output clock test signals SMB male
GGSU
PARC
RUNALM
ACT
DEB
UG
TESTOUT
CLK
IN
ACTLINK
10/1
00/1
000B
ASE-
T
RESET
ACTLINK
8
9
0
1
2
3
4
5
6
7
11
10
ACTLINK
Page34Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Board- GTNUConfigured in slots 4 and slot 5 of the GMPS/GEPS/GTCS
(active/standby mode)
Performs the TDM (Time Division Multiplexing) switching
function
Provides 128 K *128 K TDM switching
Allocates TDM network resources, establishes and releases
radio links
Port Function Matching
connector
TDM 0-5TDM high-speed serial port, used to connect
the GTNUs between subracksDB14
G T N U
P A R C
R U NA L M
A C T
TNM
5TN
M4
TNM
0TN
M1
TNM
2TN
M3
Page35Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Board- GXPUMConfigured in slots 0 and 1 of the GMPS/GEPS
(active/standby mode).
Paging control
System information management
Channel assignment
BTS common service management
G X P U
P A R C
R U NA L M
A C T
10/1
00/1
000B
ASE-
T
A C TL I N K
0
1
2
3 Port Function Matching
connector
10/100/1000
BASEs- T0-3GE/FE Ethernet port, reserved RJ45
Voice call control
Packet service control
Handover
Power control
Page36Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Board- GXPUCConfigured in slots 10 and slot 11 in the GMPS/GEPS
(active/standby mode)
Performs message cell broadcast function of the system
Provides interface for connecting the Cell Broadcast Center
(CBC)
Stores cell broadcast messages
Schedules cell broadcast messages based on the Cell
Broadcast Channel (CBCH)
G X P U
P A R C
R U NA L M
A C T
10/1
00/1
000B
ASE-
T
A C TL I N K
0
1
2
3
Port Function Matching
connector
10/100/1000
BASEs T0-3GE/FE Ethernet port, reserved RJ45
Page37Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Board- GEIU/ GOIUGEIU/GOIU works in active/standby mode and can be categorized into the following types :
The GEIUB/GOIUB is the Interface Unit for the Abis interfaceThe GEIUP/GOIUP is the Interface Unit for the Pb interfaceThe GEIUT/GOIUT is the Interface Unit for the Ater interfaceThe GEIUA/GOIUA is the Interface Unit for the A interface
GEIU
PARC
RUNALMACT
TEST
OU
T2M
02M
1
GOIU
PARC
RUNALMACT
TEST
OU
T2M
02M
1
LOS
TXRX
E1/T1(0~7)
E1/T1(16~23)
E1/T1(24~31)
E1/T1(8~15)
Interface Function Matching connector
E1/ T1
0-31The E1/ T1 port,0 ~31 of the used to transmit and receive E1/ T1 signals on routes 0-31
DB44
2M 0-12.048 MHz clock source output port, used to output the extracted line clock as the system clock source
SMB male connector
TESTOUT 2.048 MHz clock output port, used to output the testing clock of the system
SMB male connector
Page38Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Board- GEIU/ GOIUThe GEIU/GOIU has the following functions:
Processes the SS7 MTP2 protocols (performed by GEIUT/GOIUT)
Processes the Link Access Procedure on the D channel (LAPD) protocols (performed by GEIUP/GOIUP or GEIUB/GOIUB )
Provides maintenance links when GTCS subracks are configured at the MSC side
Performs inter-board Tributary Protect Switching (TPS)
GEIU
PARC
RUNALMACT
TEST
OU
T2M
02M
1
GOIU
PARC
RUNALMACT
TEST
OU
T2M
02M
1
LOS
TXRX
E1/T1(0~7)
E1/T1(16~23)
E1/T1(24~31)
E1/T1(8~15)
Interface Function Matching connector
RX Transmitting optical port 155.52 Mbit/s
TX Receiving optical port 155.52 Mbit/s
LC connector
2M 0-12.048 MHz clock source output port, used to output the extracted line clock as the system clock source
SMB male connector
TESTOUT 2.048 MHz clock output port, used to output the testing clock of the system
SMB male connector
Page39Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Board- GEIU
DIP switch
Bit Description 75 Ω 120 Ω
1 0 -7 of the Used to select the impedance on E1/ T1 links 7
ON OFF
2 8 -15 of the Used to select the impedance on E1/ T1 links 15
ON OFF
3 16 -23 of the Used to select the impedance on E1/ T1 links 23
ON OFF
4 24 -31 of the Used to select the impedance on E1/ T1 links 31
ON OFF
5-8 Unused ON OFFS3 1-8 0 -7 of the Used to set the protection grounding of
the transmitting end of E1/ T1 links 7ON OFF
S4 1-8 8 -15 of the Used to set the protection grounding of the transmitting end of E1/ T1 links 15
ON OFF
S5 1-8 16 -23 of the Used to set the protection grounding of the transmitting end of E1/ T1 links 23
ON OFF
S6 1-8 24 -31 of the Used to set the protection grounding of the transmitting end of E1/ T1 links 31
ON OFF
S1
There are DIP switches on GEIU, the default setting is to support 75Ω
Page40Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Board- GDPUCConfigured in slot 0 to slot 3, slot 8 to slot 13 of the
GTCS (N+1 redundant backup mode)
Performs the voice and data service processing function
Encodes and decodes speech services
Performs data service rate adaptation
Performs Tandem Free Operation (TFO)
Performs voice enhancement function
Automatically detects voice faults
G D S U
P A R C
R U NA L M
A C T
Page41Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Contents1. System Description
2. Hardware Structure
3. System Logical Structure
4. System Signal Flow
5. Typical Configuration
Page42Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
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
Page43Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
System Logical StructureConnectionbetweensubracks
TDM switching subsystem
GE switching subsystem
Clocksubsystem
Serviceprocessingsubsystem
E1/STM-1 to BTSInterface
andsignaling
processingsubsystem
E1/STM-1 to PCU
E1/STM-1 to MSC
Servicecontrol
subsystem
Connectionbetweensubracks
Page44Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
TDM Switching Subsystem The Time Division Multiplexing (TDM) switching subsystem provides circuit
switched domain (CS) switching for the system
Provides TDM bearers for the A, Abis, Ater, and Pb interfaces
Performs TDM switching and providing circuit switched domain (CS) switching for the system
Provides TDM bearers for the system service processing
Logical Unit Physical entity
TDM access bearer unit GEIUB/GOIUB, GEIUP/GOIUP, GEIUT/GOIUT, GEIUA/GOIUA
TDM switching unit GTNU
TDM processing bearer unit GDPUC
Page45Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
TDM Access Bearer UnitThe TDM access bearer unit provides TDM bearers for the services on the A, Abis, Ater, and Pb 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.
Page46Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
TDM Switching UnitIntra-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
Page47Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
TDM Switching UnitInter-Subrack TDM switching
Inter-subrack TDM switching is carried out through mesh interconnections
The BSC6000 supports the following mesh interconnections between a maximum of four subracks
Mesh interconnections between the GMPS and three GEPSs
Mesh interconnection between four GTCSs
SubrackSubrack 11
SubrackSubrack 22
SubrackSubrack 44
SubrackSubrack 33
Page48Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Inter-Subrack InterconnectionsThe right figure
shows the
interconnections of
GTNU crossover
cables when four
service subracks
are configuredGEPS 1#
GMPS 0#GTNU GTNU
GTNU GTNUGEPS 2#GTNU GTNU
GEPS 3#GTNU GTNU
Page49Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
GTNU Crossover Ethernet Cable
Pin12
W1 W3
W2 W4
1
B
B
X4
X3X1
X2
A
A
Pin14
Pin1 Pin14
3
Page50Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
GE Switching SubsystemThe Gigabit Ethernet (GE) switching subsystem performs GE switching of signaling and O&M interface
The GSCU performs operation and maintenance of its subrackand provides GE switching for the other boards in the same subrack
GSCU (active) GSCU (standby)
Board Board Board………IntraIntra--SubrackSubrack ConnectionConnection
Page51Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
GE Switching UnitInter-subrack GE switching: star interconnection through
crossover networks
GEPSGEPS
GEPSGEPS GMPSGMPS
GEPSGEPS
GTCSGTCS
GTCSGTCS
GTCSGTCS
GTCSGTCS
Only in Local Only in Local GTCS mode:GTCS mode:Crossed LAN Crossed LAN
cables between cables between GSCUGSCU
Note: In Remote GTCS mode, loading path is in Ater interface
Page52Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Cross LAN cables
LMT
M2000/NM centerLanSwitch
GBAM
GSCU (main subrack)
GE 0
GE 1
GE 2
GE 3
GE 4
GE 5
GE 6
GE 9
GE 7
GE 8
GE 10
GE 11
GE TRUNK1
GE TRUNK3
GE TRUNK4
GE TRUNK6
GE TRUNK5
GE 0
GE 1
GE 0
GE 1
GE 0
GE 1
1
2
3
GE TRUNK2
GE Switching Interconnection
CBCGE 0
GE 13
GSCU (extension subrack)
GSCU
(main subrack)
GSCU0
GSCU0 GSCU1
GSCU1
Page53Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
QuestionsWhat is the difference between the local GTCS and the remote GTCS?
The local GTCS connects with the GMPS through an Ethernet cable.Only the Ater connection path should be configured
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
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
Page54Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Service Processing SubsystemThe hardware entity of the service processing
subsystem is the GDPUC board
Transcoding
Rate adaptation
Every board can process 968
circuits in A interface
Works in resource pool mode
Page55Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
QuestionsIf one GDPUC board is faulty, Will multiple CICs become
unavailable?
No, because GDPUC works in rescues pool mode, other
boards can provide service
Page56Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Service Control Subsystem
The hardware entities:
The GXPUM board
The GXPUC board
The GBAM server
The GSCU board in the GTCS subrack
Page57Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Service Control SubsystemThe GXPUM board performs the main service processing of the BSC6000
paging control, system information management, channel assignment, and BTS common service management
voice call control, PS service control, handover, and power control
The GXPUC board performs the cell broadcast function
The GBAM server performs BTS O&M management
The GSCU board in the GTCS subrack performs the TC resource pool management
Page58Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Interface and Signaling Processing Subsystem
The interface and signaling subsystem provides interfaces of BSC, BTS, and NSS, which performs signaling processing function of data link layer
Provides A/Abis/Pb/Ater interfaces
Supports cell broadcast message service processing
Supports the MTP2 protocol of SS7 processing
Supports the LAPD protocol processing
BTSGMPS/GEPS
GTCS MSC
PCU CBC
BSC
Abis
Pb Cb
AterA
Page59Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Interface and Signaling Processing Subsystem
Signaling Processing
GEIUB/GOIUB processes the LAPD signaling in Abis interface,
which can support 256 LAPD links
GEIUT/GOIUT in GMPS/GEPS processes the MTP2 signaling
of SS7 ,every subrack supports 16 SS7 links which are 64Kbps
and 8 SS7 links which are 2Mbps
GEIUP/GOIUP processes the LAPD signaling in Pb interface,
every subrack supports 64 LAPD links
Page60Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Interface and Signaling Processing Subsystem
Traffic Processing
GEIUB/GOIUB supports 128 TRXs
GEIUT/GOIUT supports 3840 speech channels
GEIUP/GOIUP supports 3840 16Kbps PCICs
GEIUA supports 960 speech channels
GOIUA supports 1920 speech channels
Page61Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Clock Subsystem Hardware entity is the GSM General Clock Unit (GGCU)
Clock sources
Building Integrated Timing Supply System (BITS)
2 MHz clock
2 Mbit/s clock
The 2 Mbit/s clock source has higher anti-interference capabilities than the 2 MHz clock source
Line clock
The GTCS extracts line clock from the A interface. The GEIUA in the GTCS processes the clock and generates 8 kHz
The GTCS sends the 8 kHz clock to the GGCU in the GMPS by the Ater interface
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
Local free-run clockthe R01 does not support this clock
Page62Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Clock ConfigurationConfiguration for the clock in the GGCU
Without BITS
GGCU extracts the synchronization reference clock from the
interface board of GMPS
Other distribution cables are not required
GGCU chooses the clock reference of backplane
With BITS
GGCU should be equipped with distribution cables
BITS has high priority
Page63Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
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
GSCU
Service
board
Service
board
GEPS
Backplane transmission
Page64Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
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
Page65Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Contents1. System Description
2. Hardware Structure
3. System Logical Structure
4. System Signal Flow
5. Typical Configuration
Page66Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Contents4. System Signal Flow
4.1 System Signal Flow
4.2 O&M Signal Flow
4.3 Loading Path
4.4 Alarm Channel
Page67Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
CS Service Signal Flow Voice service
BTS GEIUB GTNU GEIUT GEIUT GTNU
GDPUC GTNU GEIUA MSC
GTNU
GEIUT
GTNU
GEIUT
GEIUA
MSC
E1/T1 cable
TDM switching on the backplane
GTCSGMPS/GEPS A interface
Front board
Rear board
GDPUC
GEIUB
BTS
Abis
8K/16K 64K
16K
Ater
Page68Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
PS Service Signal FlowPS service
BTS GEIUB GTNU GEIUP PCU
GTNU
GEIUP
SGSN
E1/T1 cable
Backplane TDM switching
GMPS/GEPS Pb Gb
Front board Rear board
GEIUB
BTS
Abis
PCU
Page69Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Service Signal Flow
TC subrack
GDPUC
GTNU
GEIUT GEIUA
BM subrack
GEIUTGEIUBGTNU
Abis
Pb
Voice service, non-crossover subrack switch Voice service, crossover subrack switch
PS service, non-crossover subrack switch
Ater
BM subrack
GTNU
Abis
GEIUB GEIUT
GEIUP
16K
16K
16K 64K
64K
64K
64K
64K64K
64K
16K
16K
64K 64K 64K
64K16K
64K
PS service, crossover subrack switch
TC subrack
GDPUC(TC)
GTNU
GEIUT GEIUA
64K 64K 64K
A interface
Page70Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
SS7 on the A Interface SS7 on the A Interface
MSC GEIUA GTNU GEIUT GEIUT GSCU
GXPUM
GXPUM
GSCU
GEIUT
GTNU
GEIUT
GEIUA
MSC
The signals are processed through the MTP2, and then sent to the GXPUM in the mode of internal
signaling flow
GTCSGMPS/GEPS Ater A
E1/T1 cable
GE switching on the backplaneTDM switching on the backplane
Front board
Rear board
Page71Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
LAPD on the Abis InterfaceLAPD on the Abis interface
BTS GEIUB GSCU GXPUM
GXPUM
GSCU
GEIUB
BTS
E1/T1 cable
GE switching on the backplane
The signals are processed through the LAPD, and then sent to the GXPUM in the mode of internal signaling flow
GMPS/GEPSAbis
Front board
Rear board
Page72Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
LAPD on the Pb InterfaceLAPD on the Pb interface
PCU GEIUP GSCU GXPUM
GXPUM
GSCU
GEIUP
PCU
E1/T1 cable
GE switching on the backplane
The signals are processed through the LAPD, and then sent to the GXPUM in the mode of internal signaling flow
GMPS/GEPSPb
Front board
Rear board
Page73Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Signaling Signal Flow on the CbInterface
Signal signaling flow on the Cb interface
CBC GBAM GSCU GXPUC GSCU GXPUM
GXPUM
GSCU
GXPUC
GBAM
Ethernet Cable
GE switching on the backplane
The signals are processed through the Cbinterface module, and then sent to service control subsystem in the mode of internal signaling flow
GMPS/GEPSCb
Front board
Rear board
LANSwitch
GXPUC
CBC
Page74Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
O&M Flow
Service board G
SCU
GEIUT
GSCU
GEIUT
E1/T1 cable
GE switching on the backplane
Network cable
GTCSGMPS
Ater
GSCU
L
M
T
GBAM
Service board
Service board
GEPS
HDLC link
Front board
Rear board
Page75Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
O&M Flow O&M path of the GMPS
LMT GBAM GSCU boards of the GMPS
O&M path of the GEPS
LMT GBAM GSCU inter- subrack interconnection cable GSCU boards of the GEPS
O&M path of the GTCS
LMT GBAM GSCU GEIUT HDLC GEIUT GSCU boards of the GTCS
O&M path of the BTS
LMT GBAM GSCU GEIUB BTS
Page76Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Software Loading Path (Remote GTCS)
GEPS GTCS
Main GTCSGMPS
EIUT
GBAM
GSCU
EIUT
GSCU
GSCU
GSCU
GE on the backplane
HDLC
Inter-subrack Cable
Service board
Service board
Service board
Service board
Page77Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Software Loading Path (Local GTCS)
GBAM
GSCU
GE on the backplane
Inter-subrack Cable
GMPS
Service board
GEPS GTCS
GSCU
GSCU
Service board
Service board
Main GTCS
GSCU
Service board
Page78Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Connection of Alarm Box Connection scheme
Alarm management
module
GBAM Alarm box
Convert Management System
LMT
Serial CableSerial Cable
Page79Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Report of Alarm from Local Subrack
GMPS
GSCU GBAMLMT
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
Page80Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Report of Alarm from Remote Subrack
GMPS
GEIUT
GBAMLMT
Convert Alarm box
GTCS
GEIUT
Service board
Service board
GSCU
GSCU
HDLCHDLCLinkLink
Page81Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Contents1. System Description
2. Hardware Structure
3. System Logical Structure
4. System Signal Flow
5. Typical Configuration
Page82Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Configuration PrincipleGMPS/GEPS configuration principle
GEIUB/GOIUB supports 128 TRXs, 256 LAPDs
GEIUB/GOIUB provides 32 E1 ports which can work in 1:1,
2:1,3:1,4:1 mode
Only one subrack can be installed with GEIUP/GOIUP and GXPUC,
usually GEIUP/GOIUP and GXPUC is installed in GMPS
Both E1 and Optical transmission can be configured in Pb, Abis
interface in the same subrack, but only single transmission mode can
be configured in Ater interface
Page83Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Configuration PrincipleGTCS configuration principle
All the GTCSs in the same BSC can only be configured as one single mode which is local GTCS or remote GTCS
GDPUC can process 968 circuits which uses N+1 redundancy configuration. All the TC resources are shared in resource pool mode in one subrack
GEIUT/GOIUT supports 3840 speech channels, GEIUA supports 960 speech channels while GOIUA supports 1920 speech channels, so the proportion between the number of the Ater interface boards and that of the A interface boards is 1: 4 or 1:2
Both E1 and Optical transmission can be configured in A interface in the same subrack, but only single transmission mode can be configured in Ater interface
Page84Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Typical Configuration Capacity of this
configuration:
256TRX full
rate/256TRX
half rate
Page85Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Typical Configuration Capacity of full configuration: When a BSC6000 is fully
configured, it supports 2048TRX full rate/2048TRX half rate
Page86Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
QuestionsWhy should the capacity of the transmission board be
expanded from the middle to the sides?
Because there are lots of cables when the E1/T1 electrical
interface is used, the capacity of the transmission board should
be expanded from the middle to the sides to facilitate the
cabling.
Page87Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
SummaryIntroduce features and functions of BSC6000
Describe components and functions of racks, subracks and
boards in BSC6000
Describe functions of logical structure and cable
connections in every logical part
List configuration principles and typical configurations
Thank youwww.huawei.com