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1
MBSC6900 Hardware Structure
JasonM
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Reference
BSC6900 GSM Product Descriptions
BSC6900 UMTS Product Descriptions
BSC6900 GU Product Descriptions
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Main Content
1. BSC6900 Introduction
2. BSC6900 Hardware Structure
3. BSC6900 Logical Structure
4. Board Layout
5. Service Processing Subsystem
6. Switching Subsystem
7. Clock Synchronization Subsystem8. Operation & Maintenance Subsystem
9. GSM Interface Subsystem
10. UMTS Interface Subsystem
11. Power Supply Subsystem
12. Environment Monitoring Subsystem13. Cable and Cable Connections
14. GSM Signal Flow
15. UMTS Signal Flow
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1. BSC6900 Introductions
1. Location of BSC6900 in GSM & UMTS Network2. GSM Interfaces
3. BSC6900 Interfaces
4. BSC6900 Co-Cabinet5. BSC6900 Co-O&M
6. BSC6900 Co-TRM
7. BSC6900 Co-RRM
8. Typical Capacity of BSC6900
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Location of BSC6900 in GSM & UMTS Network
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UMTS Interfaces
The interfaces between the BSC6900 GSM and each NE in the UMTSnetwork are as follows:
Uu Interface: the interface between UE and UTRAN
Iub Interface: the interface between the NodeB and RNC.
Iur Interface: the interface between the RNC and RNC.
Iu-CS Interface: the interface between the MSC and MGW.
Iu-PS Interface: the interface between the RNC and SGSN
Iu-BC Interface: the interface between the RNC and CBC
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GSM Interfaces
The interfaces between the BSC6900 GSM and each NE in theGSM network are as follows:
Um interface : the interface between MS and BSS
Abis Interface: the interface between the BTS and BSC
A Interface: the interface between the BSC and MSC or MGW
Ater Interface: the interface between the BSC and Transcoder
Gb Interface: the Interface between the BSC and SGSN
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> Smooth evolution from BSC to RNC with software upgrade
> Latest Software Version for BSC6900 is indicated as:
GBSS12.0 (GSM) / RAN12.0 (UMTS)
Above shows GU Mode. However BSC6900 supports two other mode which
are GO (GSM Only ) and UO (UMTS Only)
Software
upgrade
BSC6900 Co-Cabinet
BSC
BSC
RNC
RNC
RNC
BSC
GSM&UMTS cabinet GSM&UMTS co-cabinet
RNC
RNC
BSC
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BSC6900 Software Versions for VHA
V900R012C01SPH508
V =Version
R = ReleaseC= Customer
SP= Service Pack
H= HotC= Cold
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NetworkOptimization
FaultManagement
PMManagement
ConfigurationManagement
Unified OAM toolkits: Easier 2G/3G trouble shooting
Unified GENEX : Unified 2G/3G network planning,
performance evaluation and performance trouble shooting
Unified CME : Simultaneous 2G/3G data configuration,
correctness and efficiency guaranteed
BSC6900 Co-O&M
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pTRAU
pTRAU
IPUNI-BTS
UNI-BTSUNI-BSCCo-transmission
UDP
IP
/
PPP
IP SW
Router
FP
FP
FP
3G
2G
3G
2G
pTRAU
pTRAU
F
P
F
P
F
P
UDP
IP
/
PPP
IP SW
Router
pTRAU
Interfaceboard
5-10% Gain
0.2 0.1 0.05 0.03 0.02 0.01 0.005 0.002 0.001
GOS
TrafficGain(%)
10
9
8
7
6
5
4
3
2
1
0 With unified transport resource management,bandwidth can be shared by UMTS&GSM.
Without Co-trans Co-trans
UMTS / GSM UMTS + GSMTrafficrejection
Multiplexing
Gain
BSC6900 Co-TRM
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UMTS
GSM
Cs service PS service
Service direction on UMTS/GSM
Heavy
Load
Heavy
Load
Heavy
Load
Heavy
Load
UMTS
GSM
Load control between UMTS/GSM
Load control by
inter-RAT HO
3G/2G cell load consideration make traffic
load spread in UMTS&GSM evenly, network
usage efficiency improved
3G/2G cell load consideration make it more accurate for
the service direction, better
performance achieved
BSC6900 Co-RRM
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Typical Capacity for BSC6900 GSM
BSC6900 GSM only
Item 1MPS+1TCS 1MPS+1EPS+2TCS 1MPS+2EPS+2TCS
Number ofcabinets
2 2 2
BHCA(K) 1750 3500 5250
Traffic volume
Erl
6500 13000 19500
Number of TRXs 1024 2048 3072
Number of active
PDCHsMCS-9
4096 8192 12288
Typical configuration specifications of the BSC6900 GSM(BM/TC separated
and Abis over non-IP R11 board)
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Typical Capacity for BSC6900 UMTS
Specs. BSC6900 V9R12 BSC6810V2R11
Max. traffic 80400 Erlang 61200 Erlang
Max. PS throughput 8040Mbps 3910Mbpsdownlink+uplink
Max. No. of NodeB 3060 1,700
Max. No. of cell 5100 5,100
BHCA 2380k 2000K
BASED on 2 Cabinet
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2. BSC6900 Hardware Structure
1. BSC6900 Cabinet2. BSC6900 Cabinet for GSM Only
3. BSC6900 Cabinet for UMTS Only
4. BSC6900 Subrack
5. DIP Switch of the Subrack
6. Power Distribution Box
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BSC6900 Cabinet The BSC6900 uses the Huawei N68E-22 cabinet and the Huawei N68-21-N
cabinet. The two models of cabinets have the same appearance.N68E-22 is divided
into a single-door cabinet or a double-door cabinet.
Item Specification
Height of theavailable space
46U
Weight Empty cabinet100 kg
Cabinet in full
configuration300 kg
Input voltage
range
-40 V to -57 V
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BSC6900 Cabinet GSM Only
The BSC6900 cabinet is classified into main
processing rack (MPR), extended processingrack (EPR), and transcoder rack (TCR) only for
GSM.
For GSM the BSC6900 the MPR, EPR and TCR
can be configured as BM/TC combined , BM/TC
separated or A over IP configuration.
BM/TC Combined BM/TC Separated
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BSC6900 Cabinet UMTS Only
The BSC6900 cabinet is classified into main
processing rack (MPR) and extended processing
rack (EPR
Maximum there are only two cabinets. One for
MPR and another for EPR
For UMTS Cabinet there will be only one MPSand five EPS subracks
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BSC6900 Subrack The BSC6900 GSM subrack has a standard width of 19 inches. The height of each
subrack is 12 U. The boards are installed on the front and rear sides of the
backplane, which is positioned in the center of the subrack. A subrack provides 28 slots. The slots on the front of the subrack are numbered
from 0 to 13, and those on the rear are numbered from 14 to 27.
MPS: Main Processing Subrack
EPS: Extended Processing Subrack
TCS: Transcoder Subrack
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BSC6900 Subrack
1 Fan box 2 Mounting ear 3 Guide rail
4 Front cabletrough
5 Boards 6 Groundingscrew
7 DC power
input port
8 Port for the
monitoring signal
cable of the power
distribution box
9 Cover plate
of the DIP
switch
Front ViewRear View
Classification of BSC6900 GSM subracks
Item Index
Height of the subrack 12U
Weight of the subrack Empty: 25kg;
Full configuration57kg
Consumption l MPS subrack: 1000W
l EPS subrack: 1000W
l TCS subrack:1000W
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DIP Switch of the Subrack
Subrack
number
Subrack code
1 2 3 4 5 6 7 8
Subrack 0 ON ON ON ON ON ON ON OFF
Subrack 1 OFF ON ON ON ON OFF ON OFF
Subrack 2 ON OFF ON ON ON OFF ON OFF
Subrack 3 OFF OFF ON ON ON ON ON OFF
Subrack 4 ON ON OFF ON ON OFF ON OFF
Subrack 5 OFF ON OFF ON ON ON ON OFF
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DIP Switch of the Subrack
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3. BSC6900 Logical Structure
1. Logical Structure for GSM Mode2. Logical Structure for UMTS Mode
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Logical Structure for GSM mode
2. ServiceProcessing
Subsystem
1. Interface Subsystem
3. Clock
Subsystem
4. O&M
Subsystem
5. SwitchingSubsystem
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Logical Structure for UMTS Mode
1. Interface Subsystem
2. ServiceProcessing
Subsystem
3. Clock
Subsystem
4. O&M
Subsystem
5. Switching
Subsystem
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4. BSC6900 Board Layout
1. Logical Structure for GSM Mode2. Logical Structure for UMTS Mode
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MPS for UMTS
14 15 16 17 18 19 20 21 22 23 24 25 26 27
D
P
U
/
I
N
T
D
P
U
/
I
N
T
D
P
U
/
I
N
T
D
P
U
/
I
N
T
D
P
U
/
I
N
T
D
P
U
/
I
N
T
O
M
U
a
O
M
U
a
I
N
T
I
N
T
I
N
T
I
N
T
Rear
Backplane
S
P
U
S
P
U
S
P
U
S
P
U
S
P
U
S
P
U
S
c
u
a
S
c
u
a
S
P
U
/
DP
U
S
P
U
/
DP
U
S
P
U
/
DP
U
S
P
U
/
DP
U
G
C
U
/
G
C
G
G
C
U
/
G
C
G
Front
0 1 2 3 4 5 6 7 8 9 10 11 12 13
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EPS for UMTS
14 15 16 17 18 19 20 21 22 23 24 25 26 27
D
P
U
/
I
N
T
D
P
U
/
I
N
T
D
P
U
/
I
N
T
D
P
U
/
I
N
T
D
P
U
/
I
N
T
D
P
U
/
I
N
T
I
N
T
I
N
T
I
N
T
I
N
T
I
N
T
I
N
T
I
N
T
I
N
T
Rear
Backplane
S
P
U
S
P
U
S
P
U
S
P
U
S
P
U
S
P
U
S
c
u
a
S
c
u
a
S
P
U
/
D
P
U
S
P
U
/
D
P
U
S
P
U
/
D
P
U
S
P
U
/
D
P
U
D
P
U
D
P
U
Front
0 1 2 3 4 5 6 7 8 9 10 11 12 13
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MPS for GSM (BM/TC Separated)
14 15 16 17 18 19 20 21 22 23 24 25 26 27
I
N
T
I
N
T
I
N
T
I
N
T
I
N
T
I
N
T
O
M
U
a
O
M
U
a
I
N
T
I
N
T
Rear
Backplane
S
P
U
S
P
U
S
P
U
S
P
U
T
N
U
a
T
N
U
a
S
c
u
a
S
c
u
a
D
P
U
d
D
P
U
d
G
C
U
a
G
C
U
a
Front
0 1 2 3 4 5 6 7 8 9 10 11 12 13
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EPS for GSM (BM/TC Separated)
14 15 16 17 18 19 20 21 22 23 24 25 26 27
I
N
T
I
N
T
I
N
T
I
N
T
I
N
T
I
N
T
I
N
T
I
N
T
Rear
Backplane
SP
U
SP
U
SP
U
SP
U
T
N
U
a
T
N
U
a
S
c
u
a
S
c
u
a
D
P
U
d
D
P
U
d
D
P
U
d
Front
0 1 2 3 4 5 6 7 8 9 10 11 12 13
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MPS for GSM (BM/TC Combined)
14 15 16 17 18 19 20 21 22 23 24 25 26 27
I
N
T
I
N
T
I
N
T
I
N
T
I
N
T
I
N
T
O
M
U
a
O
M
U
a
I
N
T
I
N
T
I
N
T
I
N
T
Rear
Backplane
SP
U
SP
U
SP
U
SP
U
T
N
U
a
T
N
U
a
S
c
u
a
S
c
u
a
D
P
U
d
D
P
U
d
D
P
U
c
D
P
U
c
G
C
U
a
G
C
U
a
Front
0 1 2 3 4 5 6 7 8 9 10 11 12 13
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EPS for GSM (BM/TC Combined)
14 15 16 17 18 19 20 21 22 23 24 25 26 27
I
N
T
I
N
T
I
N
T
I
N
T
I
N
T
I
N
T
I
N
T
I
N
T
I
N
T
I
N
T
I
N
T
I
N
T
D
P
U
c
D
P
U
c
Rear
Backplane
SP
U
SP
U
SP
U
SP
U
T
N
U
a
T
N
U
a
S
c
u
a
S
c
u
a
D
P
U
d
D
P
U
d
D
P
U
d
D
P
U
c
D
P
U
c
D
P
U
c
Front
0 1 2 3 4 5 6 7 8 9 10 11 12 13
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MPS for GSM (A over IP)
14 15 16 17 18 19 20 21 22 23 24 25 26 27
I
N
T
I
N
T
I
N
T
I
N
T
I
N
T
I
N
T
O
M
U
a
O
M
U
a
I
N
T
I
N
T
Rear
Backplane
SP
U
SP
U
SP
U
SP
U
T
N
U
a
T
N
U
a
S
c
u
a
S
c
u
a
D
P
U
d
D
P
U
d
D
P
U
c
D
P
U
c
G
C
U
a
G
C
U
a
Front
0 1 2 3 4 5 6 7 8 9 10 11 12 13
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EPS for GSM (A over IP)
14 15 16 17 18 19 20 21 22 23 24 25 26 27
I
N
T
I
N
T
I
N
T
I
N
T
I
N
T
I
N
T
I
N
T
I
N
T
Rear
Backplane
SP
U
SP
U
SP
U
SP
U
T
N
U
a
T
N
U
a
S
c
u
a
S
c
u
a
D
P
U
d
D
P
U
d
D
P
U
d
D
P
U
c
D
P
U
c
D
P
U
c
Front
0 1 2 3 4 5 6 7 8 9 10 11 12 13
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5. Service Processing Subsystem
1. Functions of Service Processing Subsystem
2. Service Processing Boards
3. XPU/SPU
4. DPUc
5. DPUd
6. DPUb/e
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Functions of Service Processing Subsytem
Functions
User data transfer
Radio channel ciphering and deciphering
System admission control
Data integrity protection
Mobility management
Cell broadcast service control
Data volume reporting
Radio access management
CS service processing
PS service processing
Radio resource management and control
System information and user message tracing
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Service Processing Boards
Signaling Processing BoardXPUa/b board ( for GSM Only )
SPUa/b board ( for GSM & UMTS)
Note:The postfix of signaling processing unit a means it has 4 logic subsystem, and
the postfix of b means it has 8 logic subsystem
Data Processing Board
DPUa/b/e ( for UMTS)DPUc/d(for GSM)
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XPU/SPU
Loaded with different software, the XPUa board is functionally divided
into main control XPUa board and non-main control XPUa board.
XPUa
PARC
RUN
ALM
ACT
10/100/1000BASE-
T
ACTLINK
0
1
2
3
The 0 subsystem of main control XPU/SPU board is
MPU, used to manage the user panel and signaling
plane resources within the subrack and process the
signaling.
The subsystem of non-main control XPU/SPU board
is CPU, used to process the signaling.
For GSM Only mode, one MPU for the system is
enough. If the system upgrade to GU mode, one
MPU should for one subrack.
Main control
XPUa
Non-Main control
XPUa
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DPUc
Function
DPUc (Data Processing Unit) process CS services for GSM Service and
perform the voice coding and decoding function. It works as subrack
system pool mode.
Provides the speech format conversion and data forwarding functions
when configured in BM subrack.
Provides the Tandem Free Operation (TFO) function
Provides the voice enhancement function
Detects voice faults automatically
DPUa
PARC
RUN
ALM
ACT
Item Specification
Dimensions 366.7 mm 220 mm
Power supply Two -48 V DC working in active/standby mode. The backplane of the subrack is
responsible for the power supply.
Power consumption 49.40 W
Weight 1.26 kg
Operating temperature (long-term) 0Cto 45C
Operating temperature (short-term) -5Cto +55C
Relative humidity (long-term) 5% to 85%
Relative humidity (short-term) 5% to 95%
Processing capability Supporting 960 TCH/Fs;
Supporting 3,840 IWF flow numbers
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DPUd Function
The DPUd (Data Processing Unit) process PS services for GSM Service.It can be installed in slots 811 in MPS and 8-27 in EPSit processes
the packet services for the BSC.
Each DPUd supports 1024 activated PDCHs at the same time, and all
the PDCHs support MSC-9 coding.
Packet links processing function.
PS fault self-detection.
DPUa
PARC
RUN
ALM
ACT
Item Specification
Dimensions 366.7 mm 220 mm
Power supply Two inputs of -48 V DC working in active/standby mode. The
backplane of the subrack is responsible for the power supply.
Power consumption 49.40 W
Weight 1.26 kg
Operating temperature (long-term) 0Cto 45C
Operating temperature (short-term) -5Cto +55C
Relative humidity (long-term) 5% to 85%
Relative humidity (short-term) 5% to 95%
Processing capability Processing the PS services on up to 1,024 simultaneously
active PDCHs where signals are coded in MCS9
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DPUa
PARC
RUN
ALM
ACT
DPUb / DPUe
Processing frame protocols.
Selecting and distributing data Performing the functions involved in the GTP-U, IUUP,
PDCP, RLC, MAC, and FP protocols.
Performing encryption, decryption, and paging.
Processing internal communication protocols between
the SPU board and the DPU board.
Providing the Multimedia Broadcast and Multicast
Service (MBMS) processed on the RLC and MAC layers.
Specifications
DPUb Supports115Mbit/s data throughputdownlinkuplinkCS voice1800 erlangCS data900elang150cell
DPUe Supports335Mbit/s data throughputdownlinkuplinkCS voice3350erlangCS data1675elang300cell
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6. Switching Subsystem
1. Functions of Switching Subsystem
2. Switching Boards
3. TNUa
4. SCUa
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Functions of Switching Subsystem Functions
Provides intra-subrack Medium Access Control (MAC) switching Provides intra-subrack Time Division Multiplexing (TDM) switching
Distributes clock signals to the service processing boards
Provides inter-subrack switching
Provides switching channels for traffic data
Provides OM channels
Hardware Involved
TDM switchingTNUa board
MAC switchingSCUa board
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Switching Boards
TDM Switching Board
TNUa Board ( for GSM Only)
TNUa stands for TDM Switching Network Unit
MAC Switching Board SCUa ( for GSM & UMTS)
SCUa stands for Switching and Control Unit
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TNUa
Port Function
Matching
connector
TDM05 TDM high-speed serial port, used to connect the TNUaSbetween subracks
DB14
GTNU
PARC
RUN
ALM
ACT
TN
M5
TNM4
TNM0
T
NM1
TNM2
TNM3
The TNUa is the TDM switching unit in the BSC6900.
The active and standby TNUa are inserted in slot 4 and slot 5. The
TNUa board performs the TDM switching function, which is the TDM
switching center of the system.
The TNUa has the following functions:
Providing 128 K
128 K TDM switching
Allocating TDM network resources, establishing, and releasing radio
links
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SCUa
Port Function Matching
EHT09 10M/100M/1000M Ethernet ports, used to connect subracks RJ45
EHT101110M/100M/1000M Ethernet ports, used to connect GBAM (Only the
main subrack is connected with the GBAM)
RJ45
COM Debugging port RJ45
CLKINClock source port, used to receive the 8 kHz clock signals from the
panel of the GGCU
RJ45
TESTOUT Clock test signal port, used to output clock test signals SMB connector
The SCUa is the switching control unit in the BSC6900.
The active and standby SCUa are inserted in slot 6 and 7. The SCUa
board provides maintenance management of the subrack and GE
switching platform for the subrack.
The SCUa has the following functions:
Performing maintenance management of the subrack
Providing a GE platform for the subrack
Providing clock information for the other boards in the same
subrack except the GCUa
SCUa
PARC
RUN
ALM
ACT
COM
TESTOUT
CL
KIN
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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7. Clock Subsystem
1. List of Clock Source
2. Clock Synchronization Boards
3. Clock Synchronization Structure
4. GCUa/ GCGa
Li t f Cl k S
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List of Clock Source Clock Source
Bits clock
Line clock
GPS
Reference Clock for the MPS or EPS
The reference clocks are provided by the GCUa. The reference clocks generate 8kHz clock
signals through the GCUa.
MPS: The clock signals are sent to the SCUa in the MPSa subrack through the backplane.
Then, the clock signals are sent to other boards in the same subrack.
EPS: The clock signals are sent to the SCUa board in the EPSa subrack through the clock
cable. Then, the signals are sent to other boards through the backplane.
Reference Clock for the TCS
Each TCS extracts line clock from the A interface. The line clock is processed through Ainterface panel and then generates 8 KHz clock signals.
The clock signals are sent to the SCUa in the subrack through the backplane. Then the clock
signals are sent to other boards in the same subrack.
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Clock Synchronization Boards
Clock Synchronization Boards
GCUa stands for General Clock Unit
GCGa stands for General Clock Unit with GPS Card
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Clock Synchronization Subsystem Structure
High-speed backplane channel
R
I
N
T
R
I
N
T
S
C
U
a
R
I
N
T
R
I
N
T
S
C
U
a
S
C
U
a
GCUa/GCGa
Clock module
RSS
8kHz
To BTS/NodeB
To BTS/NodeBTo BTS/NodeB
RBS RBS
19.44MHz, 32.768MHz, 8KHz
19.44MHz, 32.768MHz,
8KHz
19.44MHz, 32.768MHz,
8KHz
8kHz
Clock cable
CN BITS GPS
8kHz
GCU / GCG
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Port
nameFunction
Port type
ATN-IN Port for the GPS antenna. SMA female
CLKOU
T0~9
Ports for outputting synchronization timing signals. The ten
ports are used to output 8 kHz timing signals and 1PPS
timing signals
RJ45
COM0 Reserved RJ45
COM1 Port for 422-level 8kHz timing signals RJ45
TESTO
UT
Port for testing timing signal output. This port is used to
output the internal timing signals of the board
SMB male
TESTINPort for testing timing signal input. This port is used to
input 2 MHz signals.
SMB male
CLKIN0Port for inputting BITS timing signals and line timing
signals.
SMB male
CLKIN1Port for inputting BITS timing signals and line timing
signals.
SMB male
GCUa/ GCGa
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8. O&M Subsystem
1. O&M Subsystem Structure
2. O&M Board
3. OMUa
4. External Default IP5. Internal Default IP
O&M S b S
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M2000
S
C
U
a
S
C
U
a
LANSWITCH
OM
U
a
OM
U
a
SC
U
a
SC
U
a
WEB LMTExternal
network
MPS
Internal
network
EPS
Internet cable
Serial cable
O&M Subsystem Structure
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O&M Board
O&M Board
OMUa stands for Operation & Maintenance Board
There are two types one is OMUa and the other is OMUb
OMU sometime is also referred as BAM (Background Administrative Module)
For GSM only, this is known as GBAM
OMUa
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OMUa
The OMUa board works as a bridge for the communication between the
WebLMT and the other boards in the BSC6900.
Function
Performing the configuration management, performance management,
fault management, security management, and loading management
functions for the system
To control the communication between the LMT/M2000 and the SCUaboard of the BSC6900
(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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OMUaIndex Index of the OMUa Board Index of the OMUb Board
Size 366.7 mm x 220 mm 366.7 mm x 220 mmPower supply Two routes of -48 V DC in redundancy
backup mode (provided by the backplane of
the subrack)
Two routes of -48 V DC in
redundancy backup mode
(provided by the backplane of
the subrack)
Power consumption 120 W 90 W
Weight 4.0 kg 3.5 kg
Hard disk capacity 146 GB x 2 (RAID 1) 146 GB x 2 (RAID 1)Memory capacity 2 GB 2 GB
Temperature required when
working for a long time
0C - +45C 0C - +45C
Temperature required when
working for a short time
-5C - +55C -5C - +55C
Relative humidity required when
working for a long time
5%-85% 5%-85%
Relative humidity required when
working for a short time
5%-95% 5%-95%
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External Default IP AddressExternal IP Address Ethernet Adapter Default IP
External fixed IP address(Active OMUa)
ETH0
172.121.139.201 (255.255.255.0)ETH1
External fixed IP address
(Standby OMUa)
ETH0
172.121.139.202 (255.255.255.0)
ETH1
External virtual IP address Switch/HUB/Router 172.121.139.200 ( 255.255.255.0)
Debugging IP address
(Active OMUa)
ETH2192.168.6.50 (255.255.255.0)
Debugging IP address
(Standby OMUa)
ETH2192.168.6.60 (255.255.255.0)
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Internal Default IP Address
Internal IP Address Ethernet Adapter Default IP
Internal fixed IP address
(Active OMUa)
ETH4-SCU780.168.3.50 (255.0.0.0)
ETH5-SCU6
Internal fixed IP address
(Standby OMUa)
ETH4-SCU780.168.3.60 (255.0.0.0)
ETH5-SCU6
Internal virtual IP address Internal adapter 80.168.3.40 (255.0.0.0)
Backup Channel IP address
(Active OMUa)ETH3
192.168.3.50 (255.255.255.0)
Backup Channel IP address
(Standby OMUa)ETH3
192.168.3.60 (255.255.255.0)
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9. GSM Interface Board
1. EIUa2. OIUa
3. POUc
4. PEUa5. FG2a
6. FG2c
7. GOUa
8. GOUc
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GSM Interface Board
Board Logical Function Board NameTransmission
Category
EIUa
Abis_TDM
32-port E1/T1 circuit Interface Unit REV:a
TDM
Ater_TDM
Pb_TDM
A_TDM
OIUa
Abis_TDM
1-port channelized Optical STM-1
Interface Unit REV:a
Ater_TDM
Pb_TDM
A_TDM
POUcTDM 4-port IP over channelized Optical STM-
1/OC-3 interface Unit REV:cTDM / IP / HDLC
IP
PEUa
FR32-port Packet over E1/T1/J1 interface
Unit REV:aFR/HDLC/IPHDLC
IP
FG2aGbIP (GSM BSC Gb IP interface) 8-port FE or 2-port electronic GE interface
unit REV:a
IP
IP
FG2c IP12-port FE or 4-port electronic GE
interface unit REV:c
GOUa IP2-port packet over GE Optical interface
Unit REV:a
GOUc IP4-port packet over GE Optical interface
Unit REV:c
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EIUa
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OIUa
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OIUa
Item Specification
Abis TRX 384
A CIC(64K) 1,920
Ater CIC(16K) 7,168
Pb CIC(16K) 7,168
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POUc
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POUc
Item Specification Trans mode
Abis TRX 512
TDM
A CIC(64K) 3,906
Ater CIC(16K) 7,168
Pb CIC(16K) 7,168
GbMaximum payload throughput (physical
layer)504 Mbit/s
Item Specification Trans mode
Abis TRX 2,048
IP
A CIC(64K) 23,040
Ater CIC(16K)
23,040 (The TC subrack
supports only 13,000 CICs.)
Item Specification Trans mode
Abis TRX 2,048 HDLC
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PEUa
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PEUa
Item Specification
Abis TRX 384
GbMaximum payload throughput (physical
layer) 64 Mbit/s
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FG2a
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FG2a
Item Specification
Abis TRX 384
A CIC(64K) 6,144
GbMaximum payload throughput (physical
layer)128 Mbit/s
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FG2c
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FG2c
Item Specification
Abis TRX 2,048
A CIC(64K) 23,040
Gb Maximum payload throughput (physical layer) 1,024 Mbit/s
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GOUa
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GOUa
Item Specification
Abis TRX 384
A CIC(64K) 6,144
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GOUc
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GOUc
Item Specification
Abis TRX 2,048
A CIC(64K) 23,040
GbMaximum payload throughput (physical
layer)1,024 Mbit/s
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10. UMTS Interface Board
1. AEUa2. AOUa
3. AOUc
4. UOIa
5. UOIc
6. FG2a
7. FG2c
8. GOUc
9. GOUa
10. PEUa11. POUa
12. POUc
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UMTS Interface
Board Logical Function Board NameTransmission
Category
AEUa ATM 32-port ATM over E1/T1/J1 interface Unit REV:a
ATMAOUa ATM2-port ATM over channelized Optical STM-1/OC-3
interface Unit REV:a
AOUc ATM4-port ATM over channelized Optical STM-1/OC-3
interface Unit REV:c
UOIc ATM/IP8-port ATM/Packet over Unchannelized Optical STM-
1/OC-3c Interface unit REV:c
ATM / IP
UOIa
ATM4-port ATM/Packet over Unchannelized Optical STM-
1/OC-3c Interface unit REV:aIP
FG2a IP 8-port FE or 2-port electronic GE interface unit REV:a
IP
FG2c IP12-port FE or 4-port electronic GE interface unit
REV:c
GOUa IP 2-port packet over GE Optical interface Unit REV:a
GOUc IP 4-port packet over GE Optical interface Unit REV:c
PEUa IP 32-port Packet over E1/T1/J1 interface Unit REV:a
POUa IP2-port IP over channelized Optical STM-1/OC-3
interface Unit REV:a
POUc IP4-port IP over channelized Optical STM-1/OC-3
interface Unit REV:c
AEUa
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AEUa
The AEUa board is an interface board and supports ATM over E1/T1/J1.
the AEUa board functions:
Providing 32 channels of ATM over E1/T1
Providing 32 IMA groups or 32 UNIs. One IMA group contains at most 32 IMA links.
Providing the fractional ATM and the fractional IMA functions.
Supporting timeslot cross-connection.
Providing AAL2 switching function.
Providing intra-board ATM switching function.
Obtaining timing signals from the Iu interface and exporting timing signals to the
GCUa/GCGa board.
Exporting timing signals to the NodeB.
Port Function Connector type
RX Optical port, used to transmit and receive optical signals. TX refers to the
transmitting optical port, and RX refers to the receiving optical port.
LC/PC
TX
2M0
2M1
Output ports for clock signals. These ports are used to transmit the 2 MHz line
clock signals to the GCUa/GCGa board. The clock signals are extracted from
upper-level devices and serve as the clock sources of the BSC6900 system.
SMB male
connector
AEUa
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AEUa
Processing capability specifications for the AEUa board
Notes:
The processing capability specifications refer to the maximum processing
capability that the board can achieve when it processes associated services
uniquely.
In the table, the CS data service refers to the Video Phone (VP) service at 64Kbit/s.
The other boards follow these 2 rules as well.
Type Specification
Iub CS voice service 2,800 Erlang
CS data service 680 Erlang
Maximum payload throughput (UL) 45 Mbit/s
Maximum payload throughput (DL) 45 Mbit/s
AOUa /AOUc
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AOUa /AOUcThe AOUa Provides 2 optical interfaces over channelized optical STM-1/OC-3 ports
AOUc board Provides 4 optical interfaces over channelized optical STM-1/OC-3
ports.The AOUa/AOUc board functions:
transmission based on ATM protocols.
Supporting ATM over E1/T1 over SDH or SONET.
Providing the IMA and the UNI functions.
Providing AAL2 switching function.
Providing intra-board ATM switching function.
Obtaining clock signals from the Iu interface and exporting timing signals to the GCUa/GCGa
board.
Exporting timing signals to the NodeB.
Port Function Connector type
RX Optical port, used to transmit and receive optical signals. TX refers to the
transmitting optical port, and RX refers to the receiving optical port.
LC/PC
TX
2M0
2M1
Output ports for clock signals. These ports are used to transmit the 2 MHz line
clock signals to the GCUa/GCGa board. The clock signals are extracted from
upper-level devices and serve as the clock sources of the BSC6900 system.
SMB male
connector
AOUa/AOUc
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AOUa/AOUcProcessing capability specifications for the AOUa board
Type Specification
Iub CS voice service 9,000 Erlang
CS data service 3,000 Erlang
Maximum payload throughput (UL) 195 Mbit/s
Maximum payload throughput (DL) 195 Mbit/s
Type Specification
Iub/Iur/Iu
cs
CS voice service 18000 Erlang
CS data service 5500 Erlang
Maximum payload throughput
(UL)
300Mbit/s
Maximum payload throughput
(DL)
300Mbit/s
Iu-PS Maximum payload throughput
DL+UL)
700Mbit/s
Processing capability specifications for the AOUc board
UOIa / UOIc
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UOIa / UOIc
The UOIc Provides 8 channels over unchannelized STM-1/OC-3c optical ports .
The UOIa Provides 4 channels over unchannelized STM-1/OC-3c optical ports .
Supports ATM/IP over SDH/SONET
Supports the Iu-CS, Iu-PS, Iu-BC, Iur, and Iub interfaces
Receives clock signals from the Iu interface and transmits clock signals to
the GCUa/GCGa board Transmits clock signals to the NodeB
Port Function Connector type
RX Optical port, used to transmit and receive optical signals. TX refers to the
transmitting optical port, and RX refers to the receiving optical port.
LC/PC
TX
2M0
2M1
Output ports for clock signals. These ports are used to transmit the 2 MHz line
clock signals to the GCUa/GCGa board. The clock signals are extracted from
upper-level devices and serve as the clock sources of the BSC6900 system.
SMB male
connector
UOIa/UOIc
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UOIa/UOIc
Processing capability specifications for the UOIa (ATM) board
Type Specification
Iub CS voice service 9,000 Erlang
CS data service 3,000 Erlang
Maximum payload throughput (UL) 225 Mbit/s
Maximum payload throughput (DL) 225 Mbit/s
Iur CS voice service 9,000 Erlang
CS data service 3,000 Erlang
Maximum payload throughput (UL) 225 Mbit/s
Maximum payload throughput (DL) 225 Mbit/s
Iu-CS CS voice service 9,000 Erlang
CS data service 3,000 ErlangIu-PS Maximum payload throughput (UL) 150 Mbit/s
Maximum payload throughput (DL) 385 Mbit/s
UOIa/UOIc
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UOIa/UOIc
Processing capability specifications for the UOIa (IP) board
Type Specification
Iub CS voice service 6,000 Erlang
CS data service 1,500 Erlang
Maximum payload throughput (UL) 120 Mbit/s
Maximum payload throughput (DL) 120 Mbit/s
Iur CS voice service 6,000 Erlang
CS data service 1,500 Erlang
Maximum payload throughput (UL) 120 Mbit/s
Maximum payload throughput (DL) 120 Mbit/s
Iu-CS CS voice service 6,000 ErlangCS data service 1,500 Erlang
Iu-PS Maximum payload throughput (UL) 250 Mbit/s
Maximum payload throughput (DL) 250 Mbit/s
UOIa/UOIc
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UOIa/UOIc
Processing capability specifications for the UOIc board
Type Specification
Iub CS voice service 18000 elang
CS data service 9000elang
Maximum payload throughput (UL) 800Mbit/s
Maximum payload throughput (DL) 800Mbit/s
Iur CS voice service 18000elang
CS data service 9000elang
Maximum payload throughput (UL) 800Mbit/s
Maximum payload throughput (DL) 800Mbit/s
Iu-CS CS voice service 18000elangCS data service 9000elang
Iu-PS Maximum payload throughput (UL) 900Mbit/s
Maximum payload throughput (DL) 900Mbit/s
FG2a/FG2c
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/The FG2a board Providing 8 FE ports or 2 GE electrical ports
the FG2c board Providing 12 FE ports or 4 GE electrical ports
FG2c Specification
Iub/Iur CS voice service 18,000 Erlang
CS data service 18,000 Erlang
Maximum payload throughput (UL+DL) 2600 Mbit/s
Iu-CS CS voice service 18,000 Erlang
CS data service 9,000 Erlang
Iu-PS Maximum payload throughput (UL+DL) 3200 Mbit/s
FG2a Specification
Iub/Iur CS voice service 6,000 Erlang
CS data service 6,000 Erlang
Maximum payload throughput (UL+DL) 840 Mbit/s
Iu-CS CS voice service 6,000 Erlang
CS data service 3,000 Erlang
Iu-PS Maximum payload throughput (UL+DL) 840 Mbit/s
GOUa/ GOUc
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GOUa/ GOUcThe GOUa board Providing 2 GE optical ports
The GOUc board Provides 4 GE optical ports
GOUc Specification
Iub/Iur CS voice service 18,000 Erlang
CS data service 18,000 Erlang
Maximum payload throughput (UL+DL) 2600 Mbit/s
Iu-CS CS voice service 18,000 Erlang
CS data service 9,000 Erlang
Iu-PS Maximum payload throughput (UL+DL) 3200 Mbit/s
GOUa Specification
Iub/Iur CS voice service 6,000 Erlang
CS data service 6,000 Erlang
Maximum payload throughput (UL+DL) 840 Mbit/s
Iu-CS CS voice service 6,000 Erlang
CS data service 3,000 Erlang
Iu-PS Maximum payload throughput (UL+DL) 840 Mbit/s
PEUa
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PEUa
The PEUa board is an interface board and supports IP over E1/T1/J1.
the PEUa board functions:
Providing 32 channels of IP over PPP/MLPPP over E1/T1 Providing 64 PPP links or 32 MLPPP groups, each MLPPP group containing 8 MLPPP links
Providing the fractional IP function
Supporting timeslot cross-connection
Obtaining clock signals from the Iu interface and exporting timing signals to the GCUa/GCGa board.
Exporting timing signals to the NodeB.
Type Specification
Iub CS voice service 2,800 Erlang
CS data service 850 Erlang
Maximum payload throughput (UL) 60 Mbit/s
Maximum payload throughput (DL) 60 Mbit/s
Port Function Connector type
RX Optical port, used to transmit and receive optical signals. TX refers to the
transmitting optical port, and RX refers to the receiving optical port.
LC/PC
TX
2M0
2M1
Output ports for clock signals. These ports are used to transmit the 2 MHz line
clock signals to the GCUa/GCGa board. The clock signals are extracted from
upper-level devices and serve as the clock sources of the BSC6900 system.
SMB male
connector
POUa/POUc
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POUa/POUc
POUa supports 2 optical interfaces over channelized optical STM-1/OC-3
POUc supports 4 optical interfaces over channelized optical STM-1/OC-3 Other functions:
Supporting IP over E1/T1 over SDH/SONET.
Providing Multi-Link PPP.
Obtaining clock signals from the Iu interface and exporting timing signals to the
GCUa/GCGa board.
Exporting timing signals to the NodeB.
Port Function Connector type
RX Optical port, used to transmit and receive optical signals. TX refers to the
transmitting optical port, and RX refers to the receiving optical port.
LC/PC
TX
2M0
2M1
Output ports for clock signals. These ports are used to transmit the 2 MHz line
clock signals to the GCUa/GCGa board. The clock signals are extracted from
upper-level devices and serve as the clock sources of the BSC6900 system.
SMB male
connector
POUa/POUc
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POUa/POUc
Processing capability specifications for the POUa board
Type Specification
Iub CS voice service 6,000 Erlang
CS data service 1,500 Erlang
Maximum payload throughput (UL) 120 Mbit/s
Maximum payload throughput (DL) 120 Mbit/s
Type Specification
Iub CS voice service 18000 erlang
CS data service 6000 erlang
Maximum payload throughput (UL) 400Mbit/s
Maximum payload throughput (DL) 400Mbit/s
Processing capability specifications for the POUc board
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11. Power Supply Subsystem
Power supply Subsystem
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The power supply subsystem of the BSC6900 adopts the dual-circuit redundancy and point-by-point monitoring solution. It
consists of the power lead-in part and the power distribution part. The power supply subsystem of the BSC6900 consists of the -48 V
DC power system, DC power distribution frame (PDF), and DCpower distribution box (PDB) at the top of the cabinet
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Power supply Subsystem
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Power supply Subsystem
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12. Environment Monitoring
Subsystem
Environment MonitoringSubsystem
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Power Monitoring The power monitoring involves monitoring the power
subsystem in real time, reporting the operating status of thepower supply, and generating alarms when faults occur
Environment MonitoringSubsystem
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Environment Monitoring The environment monitoring involves monitoring the
temperature, humidity, operating voltage, door status, waterdamage, smoke, and infrared. The environment monitoringfunction is performed by the Environment Monitor Units(EMUs).
13 Cables and Cable Connections
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13. Cables and Cable Connections
1. Main Cables
2. Y-Shaped E1/T1 Cable
3. Y-Shaped RNC Clock Signal Cable
4. Optical Cable
5. Network Cables
6. Monitoring Signal Cable of Power Distribution Box7. RNC Alarm Box Signal Cable
8. Interconnection between TNUa
9. Interconnection between SCUa
10. Interconnection in Basic Module and Transcoder11. Clock Synchronization Interconnection
Main Cables
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Main Cables
TrunkCables
75coaxialcableandY-shaped75coaxialcable 120twistedpaircableandY-shaped120twistedpaircable
NetworkCables
Straightthroughnetworkcable is for OMUa and other boards
Crossover network is between SCUa and SCUa
OpticalFibers
LC/PC-SC/PCsingle-modeopticalcable
LC/PC-FC/PCsingle-modeopticalcable
Pleasechooserightopticalfibersbasedonactualnetworksituation
Y-Shaped E1/T1 cable
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p /
(1) DB44 connector (2) Main label (Identifying the code, version, and manufacturerinformation of the cable)
(3) Label (Identifying a
coaxial cable)
(4) Metal case of the DB44 connector
E1/T1cable isusedtoconnectE1/T1/J1port
TheY-shaped75-ohmcoaxialcable/120-ohmcoaxialcableusedintheRNChastwoDB44connectorsatoneendandhasastructureof2x8cores.Thatis,the75-ohmcoaxial
cableiscomposedoftwocables,eachofwhichcontainseightmicrocoaxialcables.The16
microcoaxialcablesformeightE1RX/TXlinks.
Y-shaped RNC Clock Signal Cable
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Y shaped RNC Clock Signal Cable
(1) Label (Identifying a pair of twisted pair cables) (2) RJ45 connector
TheRJ45connectoratoneendoftheY-shapedRNCclocksignalcableis
connectedtoportCLKINontheSCUaboard.ThetwoRJ45connectorsat
theotherendofthesignalcableareconnectedtoportsCLKOUTontheactiveandstandbyGCUa/GCGaboardswhicharelocatedintheRSSsubrack.
(1)(2)
(1)
(1)
Optical Cables
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3
Optical Cables
(1) LC/PC Connector (2)SC/PC Connector (3) FC/PC Connector
LC/PC-SC/PCsingle-modeopticalcableandLC/PC-FC/PCsingle-mode
opticalcable
ItisusedtoconnecttheotherNEs
Network Cables
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Straight through cable
X1end Wire color X2end wire color
X1-1 White andorange
X2-1 White and orange
X1-2 orange X2-2 orange
X1-3 White and green X2-3 White and green
X1-4 Blue X2-4 Blue
X1-5 White and blue X2-5 White and blue
X1-6 Green X2-6 Green
X1-7 White and brown X2-7 White and brown
X1-8 brown X2-8 brown
TheRNCstraight-throughcablecanbe
usedtoconnecttheOMUaboardto
otherdevices
Crossovernetworkcablecanusedto
connecttheSCUboard
crossover cable
X1end Wire color X2 end Wire color
X1-1 White and orange X2-1 White and green
X1-2 Orange X2-2 Green
X1-3 White and green X2-3 White and orange
X1-4 Blue X2-4 Blue
X1-5 White and blue X2-5 White and blue
X1-6 Green X2-6 orange
X1-7 White and brown X2-7 White and brown
X1-8 Brown X2-8 Brown
Monitoring Signal Cable of RNC Power
Di t ib ti B
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Distribution Box
The monitoring signal cable of the RNC power distribution box has a DB9
connector at one end, and has 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
The RNC alarm box signal cable is used to transmit alarm information to the
alarm box to display audible and visible warning.
X1: RJ45 connector X2: DB9 connector
Interconnection between TNUa
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TNUaActiveBoard
Board
LVDS TDM path of backplane
Inter-TNUa Cable
TNUaStandby
TNUaActive Board
BoardTNUaStandby
Intra-Subrack: Other boards in the subrack connect with TNUa (Active/Standby)
through LVDS (Low Voltage Differential Signal) high speed serial ports of
backplane.
Inter-Subrack: TDM units of every subrack fully interconnected with each other
through TNUa crossover cables.
In full intra-subrack
interconnection, 2 cables
support 8K bandwidth.
Interconnection between TNUa
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1
0TNUa TNUa
TNUa TNUa
2TNUa TNUa
> Using Crossover Cable
Interconnection in Basic Module and Transcoder
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A interface
Pb interface Abis interfaceAter interface
Subracks of BSC6000 compose an interconnection switching network
through cascade.
TCS
TCS TCSTC
EPS
MPS EPSBM
SCUa Star interconnection
TNUa Full interconnection
Interconnection between SCUa
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Active/standby SCUa boards: HiG interconnection; 30G bandwidth.
Intra-subrack : The SCUa board provides 48G GE switching capability through
backplane. Inter-subrack : The SCUa boards are connected in star topology through intercross
cable using the GE ports on SCUa.
Switchin
g and
control
unit
Other board
Other board
Other board
Other board
Other board
Other board
Switching and
control
unit
Switchin
g and
control
unit
RSS
RBS
RBS
High-speed
backplane channelNetwork cable
Interconnection between SCUa
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SCUa in MPS subrack
GE07 interconnect with EPS, open the port by MML command.
GE8/9 interconnect with main TCS
GE10/11 interconnect with GBAM
SCUa in EPS subrack
GE01 interconnect with MPS
Clock Synchronization Interconnection
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y The connection of the GCUa of the main subrack
and the extension subrack is shown:
The active and standby GCUa output 10-way signal
channel respectively. A signal channel of an active
GCUa and that of a standby GCUa are integrated
through the Y-shaped cable.
Any of component including GCUa, Y-shaped cable,
and SCUa is faulty, the system clock still can worknormally.
14. GSM Signal Flow
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14. GSM Signal Flow
1. GSM CS Signal Flow
2. GSM PS Signal Flow
3. Signaling Flow on the A Interface
4. Signaling Flow on the Abis Interface
5. Signaling Flow on the Gb Interface6. O&M Signal Flow
GSM CS Signal Flow
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GSM CS Signal Flow
Abis over TDM+A over TDM
GSM CS Signal Flow
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GSM CS Signal Flow Abis over HDLC/IP+A over TDM
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GSM PS Signal Flow (Inner-PCU)
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Abis over TDM
Abis over HDLC/IP
Signaling Flow on the A Interface
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Abis over TDM+A over TDM
the signaling processing board XPUa processes the signaling
according to the MTP3, SCCP, and BSSAP protocols.
A Over IP
The A interface board processes the MTP2 protocol
Signaling Flow on the Abis Interface
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Abis over TDM/IP/HDLC
Signaling Flow on the Gb Interface
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Gb Over IP
the signaling processing board processes the signaling
according to the NS and BSSGP protocols. Then, the signalingis transmitted to the Gb interface board through the SCUa
board.
The Gb interface board processes the signaling according to
the IP or FR protocol. Then, the signaling is transmitted to the
SGSN over the Gb interface.
OM Signal Flow
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15. UMTS Signal Flow
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15. UMTS Signal Flow
1. BSC6900 System Signal Flows
2. Control Message Flow on the Uu Interface
3. Control Message Flow on the Iub Interface
4. Control Message Flow on the Iu/Iur Interfaces
5. Data Flow Between Iub and Iu-CS/Iu-PS6. Data Flow from Iu-BC to Iub
BSC6900 System Signal Flows
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y g
BSC6900 system signal flows including:
Control plane message flows
Uu interface message flow
Iub interfaces message flows
Iur/Iu interfaces message flows
User plane data flows UMTS service data flow
CBS service data flow
Control Message Flow on the Uu Interface
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Page 124
Intra-RNC Control Message Flow on the Uu Interface
MPS
Control Message Flow on the Uu Interface
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g
Inter-RNC Control Message Flow on the Uu Interface
Control Message Flow on the Iub Interface
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g
MPS
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Data Flow Between Iub and Iu-CS/Iu-PS
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Intra-RNC Data Flow Between Iub and Iu-CS/Iu-PS
MPS
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Data Flow from Iu-BC to Iub
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MPS
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Thank You