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7/27/2019 BSC6900 Hardware System Structure
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www.huawei.com
Copyright 2007 Huawei Technologies Co., Ltd. All rights reserved.
BSC6900 Hardware
System Structure
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Copyright 2007 Huawei Technologies Co., Ltd. All rights reserved. Page2
Contents
1 BSC6900 System Overview
2 BSC6900 Hardware Structure
3 BSC6900 Signal Flows
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Copyright 2007 Huawei Technologies Co., Ltd. All rights reserved. Page3
RNC in WCDMA System
RNC
RNC
NodeB
NodeB
NodeB
CS
PS
CBC
UE UTRAN CNUu Iu
Iu-CS
Iu-PS
Iu-BC
Iur
Iub
Iub
Iub
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Capacity
HW68 R11 Board
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Capacity HW69 R11 Board
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Contents
1 BSC6900 System Overview
2 BSC6900 Hardware Structure2 BSC6900 Hardware Structure
3 BSC6900 Signal Flows
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Contents
2 BSC6900 Hardware Structure
2.1 BSC6900 Cabinets and Subracks
2.2 BSC6900 Boards
2.3 BSC6900 Cables
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BSC6900 Cabinets
EPS
MPS
MPR EPR
Full Configuration
MPR: Main processing rack
EPR: Extended processing rack
MPS: Main processing subrack
EPS: Extended processing subrack
EPSEPS
EPS
EPS
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Item Specification
Outline
dimensioning (mm)
2200 H600
W800D
Height of available
space
46U
Weight 140~350kg
Power consumptionRSR: 4,650W
RBR: 4,660 W
BSC6900 Cabinets
Front View Rear View
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BSC6900 Subrack
12 U shielding subrack of Huawei
28 slots with backplane is positioned in the middle
Front View Rear View
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Contents
2 BSC6900 Hardware Structure
2.1 BSC6900 Cabinets and Subracks
2.2 BSC6900 Boards
2.3 BSC6900 Cables
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RNC Logical Structure
LMT/M2000
clocksynchronization
subsystem
switchingsubsystem
transportsubsyste
m
serviceprocessingsubsystem
serviceprocessingsubsystem
serviceprocessingsubsystem
BAMBAM
RNC
To NodeB
To MSC
To other RNC
To SGSN
Clock signal
Subsystem
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Switching Subsystem
Inter-Subrack Connection
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Switching Subsystem
SCUa: Switching and Control Unit
High-speed backplane channel in each subrack
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Switching Subsystem
Functions
Providing internal Medium Access Control (MAC)
switching
Enabling convergence of ATM and IP networks
Providing a service switching channel for EPS
Providing an OM channel for EPS
Distributing timing signal and RFN signal to EPS boards
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SCUa Board
Port Name Function Type
10/100/1000BASE-T For inter-subrack connection RJ45
COM Serial port for commissioning RJ45
CLKIN Receiving the 8 kHz and the 1PPS
timing signals from the
GCUa/GCGa
RJ45
TESTOUT Test the timing signal output SMB male
Functions
Main control board for configuration and maintenance
Support GE Switching for local subrackProvide synchronous clock and time synchronous information
Working mode
Locate in 6th and 7th slot in active and standby mode
Work in full-interconnection and dual-plane mode among subracks
SCUa
PARC
RUN
ALM
ACT
COM
TESTO UT
CLKIN
ACT
LINK
1 0 / 1 0 0 / 1 0 0
0 B A S E
- T
RESET
ACTLINK
8
9
0
1
2
3
4
5
6
7
11
10
ACTLINK
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Service Processing Subsystem
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XPUa
PARC
RUN
ALM
ACT
10/100/1000BASE-T
ACTLINK
0
1
2
3
SPUa Board Component
Four independent subsystems
Motherboard-subboard structure
Two sub-boards
Each has two CPU subsystems
Function
Processing signaling and algorithm
Iub/Iur/Iu interface signaling processing
Wireless and transport resource
management
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DPUa
PARC
RUN
ALM
ACT
DPUb Board
Component
22 DSPs in one board
Function
Processing data of wireless frame protocol
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Clock SynchronizationSubsystem
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Clock Synchronization Subsystem
RINT
RINT
SCUa
RINT
RINT
SCUa
SCUa
GCUa/GCGa
Clock module
RSS
8kHz
To NodeB
To NodeBTo NodeB
RBS RBS
19.44MHz, 32.768MHz, 8KHz
19.44MHz,
32.768MHz, 8KHz
19.44MHz,
32.768MHz, 8KHz
8kHz
Clock cableHigh-speed backplane
channel
CN BITS GPS Optional
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GCUa: General Clock Unit
GCGa: General Clock with GPS Card
Function
Generating system timing signal
Generating RFN signal
Clock SynchronizationSubsystem
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Port name Function Port type
ATN-IN Port for the GPS antenna SMA
female
CLKOUT
0~9
Output 8 kHz timing signals and 1PPS
timing signals
RJ45
COM0 Reserved RJ45
COM1 Port for 422-level 8kHz timing signals RJ45
TESTOUT Testing timing signal output SMB male
TESTIN Testing timing signal input of 2 MHz
signals
SMB male
CLKIN0 Inputting BITS timing and line timing
signals
SMB male
CLKIN1 Inputting BITS timing and line timing SMB male
GCUa/GCGa Board
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Transport Subsystem
RINT Interface
AEUa 32 channels ATM over E1/T1/J1 interface Iub/IuCs/Iur
AOUa Two optical ports for ATM over channelized STM-1 Iub/IuCs/Iur
UOIa Four unchannelized STM-1 optical ports Iub/IuCs/Iur, IuPs
PEUa 32 channels of IP over PPP/MLPPP over E1/T1 Iub/IuCs/Iur
FG2a Eight FE ports or two GE electrical ports Iub/IuCs/Iur, IuPs
GOUa Two GE optical ports Iub/IuCs/Iur, IuPs
RINT: RNC Interface Board
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AEUa Board Function
Providing 32 channels of ATM over E1/T1/J1 for Iub,Iur and Iu-CS
Supporting IMA, UNI, Fractional ATM, fractional IMA
Supporting Timeslot cross-connection
Supporting AAL2 switching
Supporting Intra-board ATM switching
Extracting line clock and outputting synchronization
signals to GCUa
Outputting synchronization signals to the NodeB
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AOUa Board Function
Providing two optical ports for ATM over channlized
STM-1
Supporting Iu-CS, Iur, and Iub interface
Supporting IMA and UNI
Supporting AAL2 switching
Supporting Intra-board ATM switching
Extracting line clock and outputting synchronization
signals to GCUa
Outputting synchronization signals to the NodeB
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UOIa Board Function
Providing 4 unchannelized STM-1 optical ports Supporting ATM over SDH
Supporting Iu-CS, Iu-PS, Iur, and Iub
Extracting line clock and outputting
synchronization signals to GCUa
Outputting synchronization signals to the NodeB
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PEUa Board Function
Providing 32 channels of IP over PPP/MLPPP over
E1/T1/J1
Supporting Iu-CS, Iur, and Iub
Providing the fractional IP function
Supporting timeslot cross-connection
Extracting line clock and outputting
synchronization signals to GCUa
Outputting synchronization signals to the NodeB
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FG2a Board Function
Providing 8 FE or 2 GE electrical ports Providing IP over FE or GE
Supporting Iu-CS, Iu-PS, Iur, and Iub
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GOUa Board Function
Providing two GE optical ports
Providing IP over GE
Supporting Iu-CS, Iu-PS, Iur, and Iub
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OM Subsystem
SCUa
SCUa
HUB
O
MUa
O
MUa
S
CUa
S
CUa
Alarm
box LMT
External
network
RSS
To M2000
Internal
network
RBS
Ethernet cable
Serial cable
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OM Subsystem
OMUa: Operation and Maintenance Unit Supporting two CPU, 2G memory
Supporting three ETH port (10/100/1000M Base-T self-adaptation)
Four USB(USB2.0) ports
Installed only in slots 20 and 21, or slots 22 and 23 in RSS
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OMUa Board
1 Captive screw 2 Shielding finger
3 Ejector lever 4 LED (RUN)
5 LED (ALM) 6 LED (ACT)
7 Button (RESET) 8 Button (SHUTDOWN)
9 USB port 10 Ethernet port (ETH0)
11 Ethernet port (ETH1) 12 Ethernet port (ETH2)
13 COM port 14 VGA port
15 LED (HD) 16 LED (OFFLINE)
17 Hard disk 18 Screw for fixing the hard disk
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Contents
2 BSC900 Hardware Structure
2.1 BSC6900 Cabinets and Subracks
2.2 BSC6900 Boards
2.3 BSC6900 Cables
BSC6900 Cable Distribution
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BSC6900 Cable DistributionFigure
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Main Cables
Trunk Cables 75 coaxial cable and Y-shaped 75-ohm coaxial cable
120 twisted pair cable and Y-shaped 120-ohm twisted pair cable
Network Cables
Straight through network cable
used to connect the OMUa board to other devices
Crossover network cable
used to connect the SCU board
Optical Fibers
LC/PC-SC/PC single-mode optical cable
LC/PC-FC/PC single-mode optical cable
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Y-Shaped E1/T1 cable
E1/T1 cable is used to connect E1/T1/J1 port
The Y-shaped 75-ohm coaxial cable/ 120-ohm coaxial
cable
Two DB44 connectors at one end
Each connector with a structure of 2 x 8 cores
The 16 micro coaxial cables form eight E1 RX/TX links
Y shaped RNC Clock Signal
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Y-shaped RNC Clock SignalCable
One RJ45 connector end
Connected to the port CLKIN on SCUa
Two RJ45 connectors end
Connected to ports CLKOUT on 2 GCUa in the RSS subrack
(1)(2)
(1)
(1)
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3
Optical Cables
LC/PC-SC/PC single-mode optical cable
LC/PC-FC/PC single-mode optical cable
It is used to connect the other NEs
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Network Cable
Crossover network cable
Connecting the SCU boards
Straight-through network cable
Connecting the OMUa board with other devices
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Monitoring Signal Cable of RNCPower Distribution Box
A DB9 connector at one end
A DB15 connector at the other end
X1: DB9 connector X2: DB15 connector SHELL: Metal case
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RNC Alarm Box Signal Cable
Used to transmit alarm information to the alarm box
For display audible and visible warning
X1: RJ45 connector X2: DB9 connector
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Contents
1 BSC6900 System Overview
2 BSC6900 Hardware Structure
3 BSC6900 Signal Flows
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BSC6900 Signal Flows
Control plane message flows
Uu interface message flow
Iub/Iur/Iu interfaces message flows
User plane data flows
CS data flow
PS data flow
MBMS Service data flow
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Control Plane Message Flow
Uu Interface Message Flow
Intra-RNC Control Message Flow on Uu Interface
RINT
NODEBUE
NODEBUESPUa
SPUa
DPUb
DPUb
RINT
RSS
SPM SPM
RNC
l l l
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RINT
SPUa
SPUa
DPUb
DPUb
RINT
SPMSPM
DRNC
RINT
SRNC
NODEBUE
Control Plane Message Flow Uu Interface Message Flow
Inter-RNC Control Message Flow on Uu Interface
C l l l
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NODEBUE
NODEBUE RINT
SPUa
DPUb
SPUa
DPUb
RINT
RSS
SPM SPM
RNC
Control Plane Message Flow Iub Interface Message Flow
C l Pl M Fl
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RINT
SPUa
DPUb
SPUa
DPUb
RINT
RSS
SPM SPM
RNC
MSC/SGSN/other RNC
Control Plane Message Flow Iu/Iur Interface Message Flow
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User Plane Data Flow
NODEBUE
MSC/SGSN
RINT
SPUa
DPUb
SPUa
DPUb
RINT
RSS
SPM SPM
RNC
RINT
NODEB UE
Data Flow Between Iub and Iu-CS/Iu-PS
Intra-RNC Data Flow
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RINT
SPUa
SPUb
DPUa
DPUb
RINT
SPM SPM
DRNC
RINT
SRNC
NODEBUE
RINT
MSC/SGSN
User Plane Data Flow Data Flow Between Iub and Iu-CS/Iu-PS
Inter-RNC Data Flow
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NODEBUE
RINT
DPUb
SPUa
RINT
RSS
SPM
RNC
CSUa
SGSN
User Plane Data Flow MBMS Service Data Flow
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