OMC031110 - BSC6900 GU Hardware Description

0Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
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Course Code
BSC6900 GU Hardware Description
Copyright © 2009 Huawei Technologies Co., Ltd. All rights reserved.
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Foreword
The BSC6900 is an important network element (NE) of Huawei Single RAN solution. It adopts the industry-leading multiple radio access technologies, IP transmission mode, and modular design.
The BSC6900 can be flexibly configured as a BSC6900 GSM, BSC6900 UMTS, or BSC6900 GU as required in different networks
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References
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Objectives
Upon completion of this course, you will be able to:
Detail the system structure of BSC6900
Detail the functions of the components of BSC6900
Detail the signal flows in BSC6900
List the typical hardware configuration of BSC6900
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Contents
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CS
PS
UE/MS
UTRAN/GBSS
CN
Uu/Um
Iu/A/Gb
Iu-CS/A
Iu-PS/Gb
Iur
Iub
Iub/Abis
Abis
The interfaces between the BSC6900 UMTS and each NE in the UMTS network are as follows:
Uu: the interface between the Universal Terrestrial Radio Access Network (UTRAN) and the UE
Iub: the interface between the BSC6900 UMTS and the NodeB
Iur: the interface between the BSC6900 UMTS and the RNC
Iu-CS: the interface between the BSC6900 UMTS and the Mobile Switching Center (MSC) or Media Gateway (MGW)
Iu-PS: the interface between the BSC6900 UMTS and the Serving GPRS Support Node (SGSN)
The interfaces between the BSC6900 GSM and each NE in the GSM network are as follows:
Um: the interface between the GSM BTS and the MS
Abis: the interface between the BSC6900 GSM and the BTS
A: the interface between the BSC6900 GSM and the Mobile Switching Center (MSC) or Media Gateway (MGW)
Gb: the interface between the BSC6900 GSM and the Serving GPRS Support Node (SGSN)
The BSC6900 GU performs functions such as radio resource management, base station management, power control, and handover control.
1.unknown
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Capacity
ITEM
SPECIFICATION
3450
6700
512
1024
The system capacity of the BSC6900 GU can not reach the maximum in the UMTS network and in the GSM network at the same time.
The BSC6900 V900R011 is added with the following new boards: SPUb, XPUb, DPUe, AOUc, FG2c, GOUc, POUc, and UOIc. Other boards are inherited from the BSC6000 R8 and BSC6810 V200R011, and they can be used directly after the BSC6000 or BSC6810 is upgraded to the BSC6900 GU.
In this document the new boards of the BSC6900 V900R011 are referred to as BSC6900R11 Boards, and other boards are referred to as BSC6000R8&BSC6810 R11Boards.
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Features
Supporting dynamic data configuration and system capacity expansion smoothly
Supporting different types of clock sources
Line Clock , BITS, GPS, external 8 kHz clock
Supporting star, chain and tree networking with NodeBs and BTSs
Supporting E1/T1, STM-1, FE and GE
Supporting HSPA+, MBMS+ for UMTS service
The BSC6900 GU caters to the mobile network requirements for higher capacity with fewer sites, thus requiring less space in the equipment room and reducing the power consumption. In addition, the BSC6900 GU meets the increasing requirements for packet service growth and protects the equipment investment of the operator.
The BSC6900 GU has a small variety of boards, such as transmission boards, OM boards, network switching boards, signaling processing boards, service processing boards, and clock processing boards. The simplification of board types reduces the maintenance cost. The interface boards and service boards, not bound together, are flexible in configuration and easy to maintain and expand.
Based on its all-IP platform, the BSC6900 GU betters the PS service performance. The interfaces support IP transmission, which provides sufficient bandwidth and saves transmission cost. Based on the unified all-IP platform in the UMTS and GSM networks, the BSC6900 GU conforms to the growing trend of broadband in the wireless network and meets the requirements for network convergence and evolution.
The BSC6900 GU is compatible with the hardware configuration of the BSC6810/BSC6000. Through software loading, the BSC6810/BSC6000 in the existing network can be upgraded to the BSC6900 GU. The BSC6900 UMTS can be upgraded to the BSC6900 GU through addition of the GSM boards and software upgrade. The BSC6900 GSM can be upgraded to the BSC6900 GU through addition of the UMTS boards and software upgrade This facilitates the compatibility with the GSM services and protects the investment of the operator.
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A over IP Mode
In BM/TC combined mode, the BSC is not configured with the TCS. The boards that implement the TC functions are inserted into the slots in the MPS or EPS. With the same capacity, less cabinets and less subracks are required in the BSC, thus increasing the hardware integration.
When the BSC is located in a remote equipment room, it is configured in BM/TC separated mode. The BSC is configured with a separate TCS, which is located in the TCR on the MSC side. Thus, the transmission resources between the BSC and the MSC are saved.
In A over IP mode, the BSC directly connects to the Huawei core network without using the TC, thus protecting the operator's investment and improving the voice quality due to the reduction of encoding and decoding. The A over IP mode meets the needs for network evolution.
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SW upgrade with Legacy HW + New HW (optional)
2009
2008
2006
GBSS8.1/RAN10
GBSS9.0/RAN11
GBSS12.0/RAN12
BSC6000
(GSM)
BSC6810
(UMTS)
SW upgrade with Legacy HW + New UMTS HW (necessary)
The BSC6900 can be flexibly configured as a BSC6900 GSM, BSC6900 UMTS, or BSC6900 GU as required in different networks. With the support of EDGE+, the BSC6900 GSM can be upgraded to the BSC6900 GU through addition of UMTS boards and software upgrade.
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Reducing CAPEX by reusing hardware
Dynamic capacity adjustment between 2G&3G
RNC
RNC
BSC
RNC
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Unified CME : Simultaneous 2G/3G data configuration, correctness and efficiency guaranteed
Unified WEB LMT for maintenance: 2G/3G Maintenance more easy and intuitionistic
The BSC6900 integrates the two separate OM systems of the traditional GSM network and UMTS network into a uniform OM system, thus improving the user experience and the efficiency in maintaining the multi-RAT system.
The BSC6900 uses the web-based Local Maintenance Terminal (LMT) without the need to install the client software. You can directly use the LMT after logging in to the BSC6900 homepage. The use of LMT facilitates the equipment commissioning and software upgrade and reduces the OM cost.
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IP/TDM Network
3G
2G
3G
2G
With unified transport resource management, bandwidth can be shared by UMTS&GSM.
The BSC6900 provides the highly efficient transmission resource management algorithm, which enables the transmission bandwidth to be shared between the GSM network and the UMTS network. In this way, the utilization of transmission bandwidth increases by 5% to 10%.
The IP interface board of the BSC6900 is shared between the GSM network and UMTS network so that it can transmit the GSM data and the UMTS data at the same time.
The BSC6900 supports the following flexible transmission modes shared between the GSM network and the UMTS network:
Abis/Iub over IP
A/Iu-CS over IP
Gb/Iu-PS over IP
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UMTS
GSM
Voice
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
The Co-Radio Resource Management (CoRRM) algorithm performs unified management and intelligent scheduling on the radio resources in the GSM network and UMTS network.
The traditional CoRRM algorithm exchanges the 2G/3G load information between the GSM network and the UMTS network through signaling procedures across the core networks. The CoRRM algorithm optimized by Huawei enables rapid transmission of 2G/3G load information (used as internal messages) within the BSC6900. The advantages are as follows:
Having no dependency on the equipment in the core network
Reducing delay, adjusting the load in real time, and increasing the success rate of inter-RAT handovers
Decreasing the signaling flow on the standard interface and saving interface resources
The optimized CoRRM algorithm maximizes the sharing of radio resources between the GSM network and the UMTS network, thus increasing the network capacity.
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Contents
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Contents
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The BSC6900 uses the standard N68E-22 cabinet
The N68E-22 cabinet is of two types, the single-door cabinet and the double-door cabinet
600mm
2200mm
800mm
600mm
2200mm
800mm
Item
Specification
Dimensions
2,200 mm (height) x 600 mm (width) x 800 mm (depth)
Height of the available space
46 U
Empty cabinet ≤ 100 kg Cabinet in full configuration ≤ 300 kg
Rated input voltage
EMC
Meets the requirements in ETSI EN300 386 Meets the requirements in Council directive 89/336/EEC
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Components of the Cabinet
Based on functions, cabinets are classified into the main processing rack (MPR), extended processing rack (EPR), and transcoder rack (TCR)
(1) Filler panel
EPR
The number of EPRs to be configured depends on the traffic volume, but only one EPR can be configured in the BSC6900. You can also choose not to configure an EPR.
TCR
The number of TCRs to be configured depends on the traffic volume and the configuration modes of subracks. Up to two TCRs can be configured in the BSC6900. You can also choose not to configure a TCR.
Component
Configuration
Subrack
The MPR is configured with one main processing subrack (MPS) and depending on the traffic volume, zero to two extended processing subracks (EPSs) or transcoder subracks (TCSs). The EPR is configured with one to three EPSs or TCSs, depending on the traffic volume. The TCR is configured with one to three TCSs, depending on the traffic volume.
Air Defense Frame
Rear Cable Trough
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MPR
MPS is mandatory for a BSC6900, so is MPR.
EPS is optional for BSC, it can be configured according to network dimensioning.
The MPS performs centralized switching and provides service paths for other subracks. It also provides the service processing interface, OM interface, and system clock interface.
The EPS performs the functions of user plane processing and signaling control.
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EPR
4 EPS
3 EPS
5 EPS
POWER BOX
EPR consists of EPS. Three EPS can be configured in one EPR. EPS and EPR are optional to BSC6900.
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TCR
7 TCS
6 TCS
8 TCS
POWER BOX
TCR consists of TCS. Three TCS can be configured in one TCR. TCS and TCR are optional to BSC6900.
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Power Distribution Box
2 groups of 48 V inputs in 1+1 hot backup mode
6 groups of independent 48 V outputs
(1) PAMU
subrack1
subrack0
subrack2
input voltage range
Input mode
Two groups of power inputs: A and B. Group A consists of the power inputs A1+A2 and A3. Group B consists of the power inputs B1+B2 and B3. Each group has one or two -48 V DC or -60 V DC power inputs.
Max. input current
The maximum rated input current of each route is 100 A.
Output
Output voltage range
Output mode and current
Two groups of power outputs: A and B. Each group has one to four -48 V DC or -60 V DC power outputs. The maximum rated output current of each output is 50 A and that of each group is 100 A. Each output is controlled by MCBs: A7-A10 and B7-B10. These MCBs provide the overcurrent protection function.
Output protection specifications
The overcurrent protection point is 70 A. You need to manually switch on the corresponding MCB after the overcurrent protection.
Rated output power
9,600 W (Two groups of power outputs: A and B. Each group has two -48 V DC power outputs.)
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Contents
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Subrack
8 Port for the monitoring signal cable
9 DIP switch
500mm
436mm
12U
The main components of the subrack are the fan box, slots, front cable trough, and backplane.
Specification:
In compliance with the IEC60297 standard, each subrack is 19 inches in width and 12 U in height.
1U=44.45mm=1.75inch.
Weight of subrack configured with boards: ≤ 57 kg
The DIP switch with 8 bits on the subrack is used to set the number of the subrack.
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Dip Switch on the Subrack
The DIP switch on the subrack has eight bits from 1 to 8
Subrack No.
Bit
1
2
3
4
5
6
7
8
0
0
0
0
0
0
ON
ON
OFF
ON
ON
ON
ON
ON
1
1
0
0
0
0
OFF
ON
OFF
OFF
ON
ON
ON
ON
2
0
1
0
0
0
OFF
ON
OFF
ON
OFF
ON
ON
ON
3
1
1
0
0
0
ON
ON
OFF
OFF
OFF
ON
ON
ON
4
0
0
1
0
0
OFF
ON
OFF
ON
ON
OFF
ON
ON
5
1
0
1
0
0
ON
ON
OFF
OFF
ON
OFF
ON
ON
As the DIP switch uses odd parity check, the number of 1s in the eight bits must be an odd number. The method for setting the bits is as follows:
Set bits 1 through 5 and bit 8.
Set bit 7 to ON.
Check the number of 1s in the bits of the DIP switch.
If the number of 1s is even, set bit 6 to OFF.
If the number of 1s is odd, set bit 6 to ON.
Bit
Description
1-5
Bits 1 to 5 are used for setting the subrack number. Bit 1 is the least significant bit. If the bit is set to ON, it indicates 0. If the bit is set to OFF, it indicates 1.
6
8
Bit 8 is used to set the startup mode of the SCUa board. The description of this bit is as follows: When this bit is set to ON, the SCUa board is not in auto-startup mode. In this case, the SCUa board must be started by the loading from the…

OMC031110 - BSC6900 GU Hardware Description

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