bsc6900 boards 3g.pdf

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FUNCTION CARD IN BCMV01 (BSC6000)August 22

2013

Phoeung Rim BSS Team Leader 1

RNC BSC6900 HUAWEI

(1) Air inlet (2) Independent fan subrack (3) Subrack

(4) Air defence subrack (5) Filler panel (6) Power distribution box

(7) Cable rack (8) Rear cable trough (9) Cable rack


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Components in RNC BSC6900


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1. SPUa (UCP)

SPUa refers to Signaling Processing Unit REV:a. The SPUa board is optional. Two to ten SPUa boardscan be installed in the MPS/EPS. For the MPS, the SPUa boards can be installed in slots 0 to 5, slots 8 to

11, slots 14 to 23, slots 26 to 27. For the EPS, the SPUa boards can be installed in slots 0 to 5, slots 8 to

27.

NOTE:

If the OMUa/OMUb boards are not installed in slots 26 to 27 of the MPS, the SPUa boards can

be installed in slots 26 to 27 of the MPS. If the OMUc boards are not installed in slots 26 to 27 of the MPS, the SPUa boards can be

installed in slots 26 to 27 of the MPS.

The SPUa board cannot be configured in slot 24 or slot 25 of MPS.

Functions of the SPUa Board

Loaded with different software, the SPUa board is functionally divided into main control SPUa boardand non-main control SPUa board. The main control SPUa board is used to manage the GSM/UMTS

user plane resources, control plane resources, and transmission resources in the system and process the

GSM/UMTS services on the control plane. The non-main control SPUa board is used to process theGSM/UMTS services on the control plane.

NOTE:

Run the ADD BRD command to configure the logic function type of an SPUa board:

If Logical function type is set to RUCP, the SPUa board serves as a main control SPUa board.

http://localhost:7890/pages/31184927/11/31184927/11/resources/mbsc/m-mml/add-brd.htmlhttp://localhost:7890/pages/31184927/11/31184927/11/resources/mbsc/m-mml/add-brd.htmlhttp://localhost:7890/pages/31184927/11/31184927/11/resources/mbsc/m-mml/add-brd.htmlhttp://localhost:7890/pages/31184927/11/31184927/11/resources/mbsc/m-mml/add-brd.html


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If Logical function type is set to UCP, the SPUa board serves as a non-main control SPUa board.

Main Control SPUa Board

The main control SPUa board has four logical subsystems.

Subsystem 0 of the main control SPUa board is the Main Processing Unit (MPU). It is used to manage

the user plane resources, control plane resources, and transmission resources of the system. The

functions are described as follows:

Managing the user plane resources; managing the load sharing of the user plane resources between

subracks

Maintaining the load of the control plane within the subrack; exchanging the load information on the

control planes between subracks

Providing functions such as the logical main control function of the BSC6900, the IMSI-RNTI maintenance

and query, and the IMSI-CNid maintenance and query

Forwarding the RRC connection request message to implement the sharing of user plane resources andsharing of control plane resources in the BSC6900

Subsystems 1 to 3 of the main control SPUa board belong to the CPU for Service (CPUS), which is used

to process the services on the control plane. The functions are described as follows:

Processing upper-layer signaling over the A, Um, Abis, Ater, Uu, Iu, Iur, and Iub interfaces

Processing transport layer signaling

Allocating and managing the various resources that are necessary for service setup, and establishing

signaling and service connections

Processing RFN signaling

Non-Main Control SPUa Board

The non-main control SPUa board has four logical subsystems.

The four subsystems of the non-main control SPUa board belong to the CPUS, which is used to process

the services on the control plane. The functions are described as follows:

Processing upper-layer signaling over the A, Um, Abis, Ater, Uu, Iu, Iur, and Iub interfaces

Processing transport layer signaling

Allocating and managing the various resources that are necessary for service setup, and establishing

signaling and service connections

Processing RFN signaling


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2. SCUa

SCUa refers to GE Switching network and Control Unit REV:a. The SCUa board is mandatory. Two SCUa boards

must be installed in slots 6 and 7 in the MPS/EPS/TCS.

Functions of the SCUa Board

The SCUa board provides the maintenance management and GE switching platform for the subrack in

which it is located. Thus, the BSC6900 internal MAC switching is implemented and the internalswitching in turn enables complete connection between modules of the BSC6900.

The SCUa board performs the following functions:

Provides the maintenance management function

Provides configuration and maintenance of a subrack or of the entire BSC6900

Monitors the power supply, fans, and environment of the cabinet

Supports the port trunking function

Supports the active/standby switchover

Enables inter-subrack connections

Provides a total switching capacity of 60 Gbit/s

Distributes clock signals and RFN signals for the BSC6900


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3. DPUb (UUP)

DPUb refers to Data Processing Unit REV:b. The DPUb board is optional. For the MPS, two to fourDPUb boards can be installed in slots 0 to 5, slots 8 to 11, and slots 14 to 23. For the EPS, two to sixDPUb boards can be installed in slots 0 to 5, slots 8 to 27.

NOTE:

If the OMUa/OMUb boards are not installed in slots 24 to 27 of the MPS, the DPUb boards can be installed in slots 24 to 27 of the MPS.

If the OMUc boards are not installed in slots 24 to 25 of the MPS, the DPUb boards can beinstalled in slots 24 to 25 of the MPS.

Functions of the DPUb Board

The DPUb board processes and distributes the UMTS user-plane service data.

The DPUb board has 22 logical subsystems.

The DPUb board performs the following functions:

Multiplexes and demultiplexes

Processes frame protocols

Selects and distributes data

Performs the functions of the GTP-U, IUUP, PDCP, RLC, MAC, and FP protocols

Performs encryption, decryption, and paging

Processes internal communication protocols between the SPUa/SPUb board and the DPUb board

Processes the Multimedia Broadcast and Multicast Service (MBMS) at the RLC layer and the MAC layer


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4. GCUa

GCUa refers to General Clock Unit REV:a. GCGa refers to General Clock Unit with GPS REV:a. The GCUa/GCGa

board is mandatory. Two GCUa/GCGa boards must be installed in slots 12 and 13 in the MPS.

Functions of the GCUa/GCGa Board

The GCUa/GCGa board performs the clock function.

The GCUa/GCGa board performs the following functions:

Extracts timing signals from the external synchronization timing port and from the synchronization line

signals, processes the timing signals, and provides the timing signals and the reference clock for the

entire system

Performs the fast pull-in and holdover functions on the system clock

Generates RFN signals for the system

Supports active/standby switchover. The standby GCUa/GCGa board traces the clock phase of the active

GCUa/GCGa board. This ensures the smooth output of the clock phase in the case of active/standby

switchover.

Receives and processes the clock signals and the positioning information from the GPS card. (Only the

GCGa board supports this function.)


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5. GOUa (IP)

GOUa refers to 2-port packet over GE Optical interface Unit REV:a. The GOUa board is optional. It can

be installed in the MPS, EPS. The number of GOUa boards to be installed depends on site requirements.

For the MPS, the GOUa board can be installed in slots 14 to 23. For the EPS, the GOUa board can be

installed in slots 14 to 27.

NOTE:

If the OMUa/OMUb boards are not installed in slots 24 to 27 of the MPS, the GOUa boards can be installed in slots 24 to 27 of the MPS.

If the OMUc boards are not installed in slots 24 to 25 of the MPS, the GOUa boards can beinstalled in slots 24 to 25 of the MPS.

Functions of the GOUa Board

As an optical interface board, the GOUa board supports IP over Ethernet.

The GOUa board performs the following functions:

Provides two channels over GE optical ports, which are used for IP transmission

Provides the routing-based backup and load sharing

Supports the A, Abis, Iu, Iur, and Iub interfaces

6. POUa (IP)

POUa refers to 2-port IP over channelized Optical STM-1/OC-3 interface Unit REV:a. The POUa board

is optional. It can be installed either in the MPS or in the EPS. The number of POUa boards to beinstalled depends on site requirements. For the MPS, the POUa board can be installed in slots 14 to 23.

For the EPS, the POUa board can be installed in slots 14 to 27.


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NOTE:

If the OMUa/OMUb boards are not installed in slots 24 to 27 of the MPS, the POUa boards can

be installed in slots 24 to 27 of the MPS.

If the OMUc boards are not installed in slots 24 to 25 of the MPS, the POUa boards can be

installed in slots 24 to 25 of the MPS.

Functions of the POUa Board

As an interface board, the POUa board supports channelized STM-1/OC-3 transmission based on IP protocol.

The POUa board performs the following functions:

Provides two channels over channelized optical STM-1/OC-3 ports based on IP protocol

Supports IP over E1/T1 over SDH/SONET

Provides MLPPP groups.

Supports 126 E1s or 168 T1s

Provides the Automatic Protection Switching (APS) function between the active and standby POUa

boards

Supports the Iub interfaces

Supports the extraction of line clock signals

7. OMUa


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OMUa is short for Operation and Maintenance Unit REV:a. OMUb refers to Operation and MaintenanceUnit REV:b. One or two OMUa/OMUb boards must be configured in the BSC6900. One OMUa/OMUb board occupies two slots. The board can be installed in slots 0 to 5, slots 20 to 23, or slots 24 to 27 in the

MPS at the bottom of the MPR. It is recommended that the OMUa/OMUb board be installed in slots 20

to 23 for inventory sites and in slots 24 to 27 for new sites.

NOTE:

This document describes the installation of other boards based on the OMUa/OMUb boards being installed in slots 24 to 27.

Different types of OMU boards can be configured in active and standby slots only for a short

period. When an OMUc board is used to replace an OMUa/OMUb board, the OMUc board and

the OMUa/OMUb board can be inserted into the slots and co-exist for a short period (less than

one hour), so that data can be synchronized from the OMUa/OMUb board to the OMUc board. Different types of OMU boards cannot be configured in active and standby slots for a long

period. In scenarios of long-term operation, the active and standby OMU boards must be of thesame type. For example, both active and standby OMU boards must be OMUa boards or OMUc

boards.

Functions of the OMUa/OMUb Board

The OMUa/OMUb board connects the LMT/M2000 and the other boards in the BSC6900.

The functions of the OMUa/OMUb board are as follows:

Performs the configuration management, performance management, fault management, security

management, and loading management functions for the system

Enables LMT or M2000 users to perform operation and maintenance on the BSC6900 system to control

the communication between the LMT or M2000 and the SCUa board of the BSC6900

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