01-01 introduction to the bsc

1 Introduction to the BSC

About This Chapter

This describes the physical, logical, and software structures of the BSC.

1.1 BSC Physical StructurePhysically, the BSC consists of the cabinet, cables, LMT, and alarm box.

1.2 BSC Software StructureThe software of the BSC has a distributed structure. It is classified into the host software, OMUsoftware, and LMT software.

1.3 BSC Logical StructureLogically, the BSC consists of several subsystems.

HUAWEI BSC6000 Base Station ControllerBSC Product Description 1 Introduction to the BSC

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1.1 BSC Physical StructurePhysically, the BSC consists of the cabinet, cables, LMT, and alarm box.

Figure 1-1 shows the physical structure of the BSC.

Figure 1-1 Physical structure of the BSC

OM equipment room

Alarm box

LMT

LMT

Serial portcable

……

……

Controllingcabinet

Servicecabinet

Servicecabinet

Ethernetcable

Ethernetcable

Ethernetcable

Equipment roomOptical cable to other NEs

Trunk cable toother NEsPower cable to

the PDF

LMT: Local Maintenance Terminal PDF: Power Distribution Frame

Table 1-1 lists the components of the BSC.

Table 1-1 Components of the BSC

Component Detailed Information

Controlling cabinet (GBCR) For details, refer to GBCR (Configuration TypeA) and GBCR (Configuration Type B).

Service cabinet (GBSR) For details, refer to GBSR Cabinet.

BSC Cables For details, refer to BSC Cables.

1 Introduction to the BSCHUAWEI BSC6000 Base Station Controller

BSC Product Description

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Component Detailed Information

BSC LMT The LMT is a computer that is installed with theLMT software package and is connected to the OMnetwork of the NEs. You can use the LMT to operateand maintain the NEs.For details, refer to LMT-Related Definitions.The LMT is mandatory for the BSC. The number ofLMTs to be configured depends on actualrequirements.

Alarm box The alarm box generates and reports the alarminformation.

1.2 BSC Software StructureThe software of the BSC has a distributed structure. It is classified into the host software, OMUsoftware, and LMT software.

Host Software

The host software runs on various service boards. It consists of the operating system, middleware,and application software. Figure 1-2 shows the structure of the host software.

Figure 1-2 Structure of the host software

Operating system

Middleware

Application software

l Operating system

The operating system is VxWorks, which is an embedded real-time operating system.

l Middleware

The Distributed Object-oriented Programmable Realtime Architecture (DOPRA) andPlatform of Advanced Radio Controller (PARC) middleware keeps the upper-levelapplication software independent of the lower-level operating system. The middlewareenables software functions to be transplanted between different platforms.

l Application software

Different boards are configured with different types of application software. Theapplication software is classified into radio resource processing software, processingsoftware on the resource control plane, BTS management software, and configurationmanagement and maintenance software.



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OMU Software

The OMU software runs on the GBAM server or on the GOMU to perform the operation andmaintenance of the BSC. Figure 1-3 shows the structure of the OMU software.

Figure 1-3 Structure of the OMU software

OMU software

Middleware

Operating system

l Operating systemThe OMU software runs on the Linux operating system.

l MiddlewareThe DOPRA middleware keeps the upper-level application software independent of thelower-level operating system. Thus, the middleware enables software functions to betransplanted between different platforms.

l Application softwareThe application software performs the functions of different logical entities in the GBAM/GOMU.

LMT Software

The LMT software, which consists of the operating system and application software, runs onthe LMT. Figure 1-4 shows the structure of the LMT software.

Figure 1-4 LMT software structure

Operating system

Application software

l Operating systemThe LMT runs on the Windows 2000 Professional or Windows XP Professional operatingsystem.

l Application softwareThe application software provides access to operation and maintenance of the BSC. Theapplication software is composed of the BSC6000 Local Maintenance Terminal, SiteMaintenance Terminal System, LMT Service Manager, Local Maintenance Terminal,Performance Browser tool, and Convert Management System.




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NOTE

The BSC6000 Local Maintenance Terminal provides a graphic user interface (GUI) for operationand maintenance. The Local Maintenance Terminal is also called the MML client, which providesMML commands for the users. Both of them support the maintenance and data configuration of theBSC and the BTSs concerned.

1.3 BSC Logical StructureLogically, the BSC consists of several subsystems.

Figure 1-5 shows the BSC logical structure.

Figure 1-5 BSC logical structure

To BTS

To PCU/SGSN

To MSC/MGW

TDM switching subsystem

GE switching subsystem

Clocksubsystem

Servicecontrol

subsystem

Serviceprocessingsubsystem

Interface porcessingsubsystem

Environmentmonitoringsubsystem

Powersubsystem

GBAM/GOMU

LMT/M2000

The interface processing subsystem of the BSC provides the Pb or Gb interface, depending onthe types of PCU.l When the built-in PCU is used, the interface processing subsystem provides the Gb interface

to enable the communication between the BSC and the SGSN.l When the external PCU is used, the interface processing subsystem provides the Pb

interface to enable the communication between the BSC and the PCU.

The interface processing subsystem of the BSC cannot provide the Gb interface and Pb interfacesimultaneously.

The interface processing subsystem supports different transmission modes over the A interface:l When the IP transmission is used, the A interface enables the communication between the

BSC and the MGW.l When the TDM transmission is used, the A interface enables the communication between

the BSC and the MSC/MGW.



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The interface processing subsystem of the BSC cannot support the two transmission modessimultaneously.




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01-01 introduction to the bsc

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