54944187-GBSS13-0-BSC6900-Product-Description-V1-0-20100730

GBSS13.0 BSC6900 Product Description

Issue V1.0

Date 2010-07-30

HUAWEI TECHNOLOGIES CO., LTD.

Copyright © Huawei Technologies Co., Ltd. 2010. All rights reserved.

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Huawei Technologies Co., Ltd.

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mailto:[email protected]


Issue V1.0 (2010-07-30) Huawei Proprietary and Confidential

Copyright © Huawei Technologies Co., Ltd.

Page 3 of 31

Contents

1 Introduction.................................................................................................................................... 4

1.1 Positioning ....................................................................................................................................................... 4

1.2 Benefits ............................................................................................................................................................ 6

2 Architecture .................................................................................................................................... 7

2.1 Overview .......................................................................................................................................................... 7

2.2 Hardware Architecture ..................................................................................................................................... 7

2.3 Software Architecture ..................................................................................................................................... 12

2.4 Reliability ....................................................................................................................................................... 13

3 Configurations ............................................................................................................................. 17

3.1 Overview ........................................................................................................................................................ 17

3.2 Hardware Configuration in BM/TC Combined Mode ................................................................................... 17

3.3 Hardware Configuration in BM/TC Separated Mode .................................................................................... 18

3.4 Hardware Configuration in A over IP Mode .................................................................................................. 19

4 Operation and Maintenance ..................................................................................................... 20

4.1 Overview ........................................................................................................................................................ 20

4.2 Benefits .......................................................................................................................................................... 21

5 Technical Specification .............................................................................................................. 24

5.1 Technical Specifications ................................................................................................................................. 24

5.2 Compliance Standards .................................................................................................................................... 27

6 Acronyms and Abbreviations ................................................................................................... 30




Page 4 of 31

1 Introduction

1.1 Positioning

This product description is applicable to the BSC6900 V900R013 version.

The rapid development of mobile telecommunications technologies accelerates the upgrading

of wireless products. Global System for Mobile communications (GSM) is developing

towards Enhanced Data rates for Global Evolution (EDGE) and EDGE+ while Universal

Mobile Telecommunications System (UMTS) is evolving into High-Speed Packet Access

(HSPA), HSPA+, and LTE. The operators have to meet challenges of rising operation

expenditure (OPEX), continuous upgrading of GSM products, ever-growing service demands,

and increasingly intense competition. High integration, easy operation and maintenance (OM),

IP transmission, and support of GSM and UMTS of the BSC are concerned widely by the

operators in the industry.

The BSC6900 is an important network element (NE) of Huawei SingleRAN solution. It uses

the industry-leading multiple radio access technologies, IP transmission, and modular design.

It is characterized by high capacity, high integration, high performance, and low power

consumption.

The BSC6900 can be flexibly configured as a BSC6900 GSM, BSC6900 UMTS, or BSC6900

GU as required in different networks. The BSC6900 GSM, in compliance with 3GPP Release

8, operates as an independent NE to access the GSM network, and handles the functionalities

of the Base Station Controller(BSC). With the support for EDGE+, the BSC6900 GSM can be

upgraded to the BSC6900 GU through addition of UMTS boards and software upgrade.

This document describes the BSC6900 in independent mode, that is, the BSC6900 GSM.

‎Figure 1-1 shows the BSC6900 GSM.




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Figure 1-1 BSC6900 GSM

The BSC6900 GSM supports the star, chain, tree, and ring topologies of the BTS. ‎Figure 1-2

shows the position of the BSC6900 GSM in the network.

Figure 1-2 Position of the BSC6900 GSM in the network

The interfaces between the BSC6900 GSM and each NE in the GSM network are as follows:

Um: the interface between the 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)




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The A, Um, and Gb interfaces are standard interfaces, through which equipment from

different vendors can be interconnected.

The main functionalities of the BSC6900 GSM are radio resource management, base station

management, power control, and handover control.

1.2 Benefits

High Integration and Low Cost

The BSC6900 GSM in BM/TC separated mode or A over IP mode supports 4,096 TRXs in a

single cabinet. It 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 GSM supports the simultaneous activation of up to 16,384 PDCHs,

thus meeting the increasing requirements for packet service growth and reducing the cost of

purchasing packet equipment.

Easy Configuration and Convenient Maintenance

The BSC6900 GSM has a small number of board types. In addition to transmission boards,

the BSC6900 GSM cabinet accommodates boards such as network switching boards,

signaling processing boards, and service 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.

All-IP Platform Meeting the Varying Needs for Network Evolution

Based on its all-IP platform, the PS service performance of the BSC6900 GSM is improved.

The Abis, A, and Gb interfaces support IP transmission, which provides sufficient bandwidth

and reduces transmission cost. The IP-based platform and interfaces meet the trend of flat

network and the requirements for network evolution.

Smooth Evolution for Investment Protection

The BSC6900 GSM is compatible with the hardware of the BSC6000. Through software

loading, the BSC6000 in the existing network can be upgraded to the BSC6900 GSM. The

BSC6900 GSM can be upgraded to the BSC6900 GU through addition of the UMTS boards

and software upgrade. This facilitates the deployment of UMTS network and protects the

investment of the operator.

Improved Resource Utilization Through GSM/LTE Interoperability

The radio resources and the clock can be shared in GSM-LTE dual mode scenarios, thus

reducing configuration redundancy and resource redundancy. The BSC6900 GSM supports

the evolution from GSM to LTE.




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2 Architecture

2.1 Overview

Based on the all-IP platform, the BSC6900 GSM adopting the TDM/IP dual-plane switching

system meets the varying needs for network evolution. The BSC6900 GSM has a modular

design. The resource utilization and system reliability are enhanced by fully interconnecting

subracks and applying distributed resource pools to manage the service processing units. The

backplane is universal and every slot is common to different types of boards so that different

functions can be performed. In this way, the universality and evolution of the hardware

platform are improved.

The BSC6900 GSM is compatible with the hardware of the BSC6000 in the existing network.

2.2 Hardware Architecture

2.2.1 Cabinets

The BSC6900 GSM uses the standard N68E-22 cabinet. The design complies with the

IEC60297 and IEEE standards.

The BSC6900 GSM cabinet is configured with subracks. In terms of the configured subrack,

the BSC6900 GSM cabinet is classified into main processing rack (MPR), extended

processing rack (EPR), and transcoder rack (TCR), as described in ‎Table 2-1. The subracks

should be configured from the bottom up.

Table 2-1 Classification of BSC6900 GSM cabinets

Cabinet Contained Subracks Configuration Principle

MPR 1 main processing subrack (MPS),

and 0–2 extended processing

subracks (EPSs)

Only one MPR is configured.

EPR 1 EPS Based on the requirement for

traffic capacity, 0–1 EPR is

configured.




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Cabinet Contained Subracks Configuration Principle

TCR 1–3 transcoder subracks (TCSs) In BM/TC separated mode, 1–2

TCRs are configured.

Figure 2-1 BSC6900 GSM cabinet

2.2.2 Subracks

In compliance with the IEC60297 standard, 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.

‎Figure 2-2 shows the front view and rear view of the subrack.




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Figure 2-2 Front view (left) and rear view (right) of the subrack

The BSC6900 GSM subrack is classified into the MPS, EPS, and TCS. The MPS and the EPS

are generally called the basic module (BM), and the TCS is called transcoder (TC) for short.

Table 2-2 Classification of BSC6900 GSM subracks

Subrack Quantity Functions

MPS 1 The MPS performs centralized switching and provides traffic

paths for other subracks. It also provides the service processing

interface, OM interface, and system clock interface.

EPS 0-3 The EPS performs the functions of user plane processing and

signaling control.

TCS 0-4 The TCS processes CS services by performing the functions of

voice adaptation and code conversion.

The TCS is configured in the TCR only in BM/TC separated mode.

2.2.3 Boards

Table 2-3 lists the hardware version and its corresponding boards.

Table 2-3 Hardware version and its corresponding boards

Hardware Version

Corresponding Board

HW60 R8 OMUb, SCUa, TNUa, GCUa, DPUc, DPUd, XPUa, EIUa, FG2a, GOUa,

OIUa, PEUa

HW69 R11 OMUa, SCUa, TNUa, GCGa, GCUa, DPUc, DPUd, XPUb, EIUa, FG2c,

GOUc, OIUa, PEUa, POUc




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HW69 R13 OMUc, SCUb, TNUa, GCGa, GCUa, DPUf, DPUg, XPUb, EIUa, FG2c,

GOUc, OIUa, PEUa, POUc

The board names that are boldfaced in ‎Table 2-3 indicate that the boards are not included in the previous

hardware version.

Table 2-4 describes the mapping between hardware versions and GBSS versions.

Table 2-4 Mapping between hardware versions and GBSS versions

Hardware Version

BSC6000 BSC6900

GBSS6.1/ GBSS7.0/ GBSS8.0/ GBSS8.1

GBSS9.0 GBSS12.0 GBSS13.0

HW60 R8 Support Support Support Support

HW69 R11 Not Support Support Support Support

HW69 R13 Not Support Not Support Not Support Support

The BSC6900 GSM boards can be classified into the OM board, switching processing board,

clock processing board, signaling processing board, service processing board, and interface

processing board, as described in ‎Table 2-5.

Table 2-5 Classification of BSC6900 GSM boards

Board Type Board Name

Functions

OM board OMUc

Handles configuration management, performance

management, fault management, security management, and

loading management for the BSC6900.

Works as the OM agent for the LMT/M2000 to provide the

BSC6900 OM interface for the LMT/M2000, thus achieving

the communication between the BSC6900 and the

LMT/M2000.

Works as the interface to provide web-based online help.

Differences: The OMUc board occupies only one slot and

supports one hard disk.

Switching

processing

board

SCUb Provides MAC/GE switching and enables the convergence of

ATM and IP networks.

Provides data switching channels.

Provides BSC-level or subrack-level configuration and

maintenance.

Distributes clock signals for the BSC6900.

Differences: The switching capability of the SCUb board is

four times that of the SCUa board.




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Functions

TNUa Provides TDM switching and serves as the center in the circuit

switched domain.

Assigns resources of the TDM network and provides paths for

network establishment within the BSC6900.

Handles communication processing on the GE port.

Clock

processing

board

GCUa Obtains the system clock source, performs the functions of

phase-lock and holdover, and provides clock signals.

Differences: Unlike the GCUa board, the GCGa board can

receive and process the GPS signals.

GCGa

Signaling

processing

board

XPUb Manages user plane and signaling plane resources in the subrack

and processes signaling.

Differences: The processing capability of the XPUb board is

75% to 100% higher than that of the XPUa board.

Service

processing

board

DPUf

Handles GSM speech coding and decoding, converts the speech

frame format over the IP speech channel, and processes speech

services in the system.

Differences: The processing capability of the DPUf board is

twice that of the DPUc board.

DPUg Processes GSM data services.

The processing capability of the DPUg board is the same as that

of the DPUd board.

Interface

processing

board

EIUa Provides 32 E1s/T1s.

Transmits, receives, encodes, and decodes the 32 E1s/T1s.

The E1 transmission rate is 2.048 Mbit/s, and the T1

transmission rate is 1.544 Mbit/s.

OIUa Provides one channel over the STM-1 optical port.

Provides one channelized STM-1 with the rate of 155.52

Mbit/s.

PEUa Provides 32 channels in IP over E1/T1 mode.

Provides 32 E1s/T1s in Gb over FR mode.

Extracts the clock signals and sends the signals to the GCUa

board.

FG2c Provides 12 channels over FE electrical ports or 4 channels

over GE electrical ports.

Supports IP over FE/GE.




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Functions

GOUc Provides four channels over GE optical ports.

Supports IP over GE.

POUc Provides four channels over the channelized optical

STM-1/OC-3 ports based on IP/TDM protocols, equivalent to

252 E1s or 336 T1s.

Extracts the clock signals and sends the signals to the

GCUa/GCGa board.

If operators use Huawei Nastar, operators need to install the SAU board in the BSC6900.

2.3 Software Architecture

The BSC6900 GSM software is designed with a layered architecture. Each layer has

dedicated functions and provides services for other layers. At the same time, the technical

implementation and physical topology of each layer is isolated from other layer. ‎Figure 2-3

shows the software architecture of the BSC6900 GSM.

Figure 2-3 Software architecture of the BSC6900 GSM

Infrastructure

SMP

ICCP

STCP

Application

‎Table 2-6 describes the functions of each layer in the software architecture.

Table 2-6 Functions of each layer in the BSC6900 GSM software architecture

Layer Functions

Infrastructure Provides the hardware platform and hides the lower-layer hardware

implementations.

Hides the differences for operating systems, and provides enhanced

and supplementary functions for the system.




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Layer Functions

Service

Management

Plane (SMP)

Provides the OM interface to perform the OM functions of the system.

Internal

Communication

Control Plane

(ICCP)

Transfers internal maintenance messages and service control

messages between different processors, thus implementing efficient

control over distributed communication.

Operates independent of the infrastructure layer.

Service Transport

Control Plane

(STCP)

Transports the service data on the user plane and control plane at the

network layer between NEs.

Separates the service transport technology from the radio access

technology and makes the service transport transparent to the

upper-layer service.

Provides service bearer channels.

Application Implements the basic functions of BSC service control and

concentrates on the upper-layer service control, such as call

processing, mobility management, and RRM.

Hides the topology characteristics of various resources in the network

and in the equipment.

Provides the resource access interface, hides the distribution of

internal resources and network resources, maintains the mapping

between the service control and resource instance, and controls the

association between various resources.

Manages the resources and OM status, responds to the resource

request from the upper layer, and hides the resource implementation

from the upper layer.

Isolates the upper-layer services from the hardware platform to

facilitate the hardware development.

2.4 Reliability

The resource pool design and redundancy mechanism are widely used in the system reliability

design of the BSC6900 GSM. The techniques of detecting and isolating the faults in the

boards and in the system are optimized and the software fault tolerance capability is improved

to enhance the system reliability.

2.4.1 System Reliability

The BSC6900 GSM system reliability is designed with the following features:

High reliable architecture design

The design of dual switching planes, with up to 480 Gbit/s GE star non-blocking

switching capability per subrack, solves the bottleneck and single point failure in the

deployment of the high-capacity BSC6900 GSM.




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Moreover, port trunking is adopted on the switching boards. The port trunking function

allows data backup in case of link failure, thus preventing inter-plane switchover and

cascading switchover and improving the reliability of intra-system communication.

Dual clock planes are used in clock transmission between the GCUa and the SCUb. Thus,

a single point of failure does not affect the normal operation of the system clock.

Resource pool design

In case of overload, the system achieves load sharing between the control plane and the

user plane by employing the resource pooling functionality. This effectively avoids

suspension because of overload, thus improving the resource utilization and system

reliability.

Redundancy mechanism

All the hardware in the BSC6900 GSM supports the redundancy mechanism. The rapid

switchover between active and standby parts improves the system reliability. Moreover,

with the quick fault detection and recovery feature, the impact of faults on the service is

minimized.

Flow control

The system performs flow control based on the CPU and memory usage. Thus, the

BSC6900 GSM can continue working by regulating the items pertaining to performance

monitoring, resource auditing, and resource scheduling in the case of CPU overload and

resource congestion. In this way, the system reliability is enhanced.

2.4.2 Hardware Reliability

The BSC6900 GSM hardware reliability is designed with the following features:

The system uses the multi-level cascaded and distributed cluster control mode. Several

CPUs form a cluster processing system. Each module has distinct functions. The

communication channels between modules are based on the backup design or

anti-suspension/breakdown design.

The system uses the redundancy design, as described in Table 2-7, to support hot swap of

boards and backup of boards and ports. Therefore, the system has a strong error tolerance

capability.

Table 2-7 Board redundancy

Boards Redundancy Mode

DPUf/DPUg Board resource pool

EIUa Board redundancy

FG2c Board redundancy + GE/FE port redundancy or load sharing

GCGa/GCUa Board redundancy

GOUc Board redundancy + GE/FE port redundancy or load sharing

OMUc Board redundancy

PEUa Board redundancy

POUc Board redundancy + MSP 1:1 or MSP 1+1 optical port redundancy

SCUb Board redundancy + port trunking on GE ports




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When a pair of boards work in board redundancy mode, the two boards work in the active and standby

states respectively. The active board performs the related functions. The standby board backs up the data

on the active board in real time.

Isolation mechanism is used. When entity A fails to accomplish a task, entity B that has

the same functionalities as entity A takes over the task. Meanwhile, entity A is isolated

until it is restored.

When a board with a single functionality is faulty, the board can be restarted to rectify

the fault.

All boards support dual-BIOS. When one BIOS is faulty, the startup or operation of a

board is not affected.

The system uses the non-volatile memory to store important data.

With advanced integrated circuits, the system is characterized by high integration,

sophisticated technology, and high reliability.

All the parts of the system are of high quality and pass the aging test. The process of

hardware assembly is strictly controlled. These methods ensure the high stability and

reliability for long-term operation.

2.4.3 Software Reliability

The BSC6900 GSM software reliability is designed with the following features:

Scheduled check on crucial resources

The software check mechanism checks various software resources in the system. If

resources are out of service because of software faults, the check mechanism can release

the abnormal resources and generate related logs and alarms.

Task monitoring

When the software is running, internal software faults and some hardware faults can be

monitored through the monitoring process. The monitoring process monitors the task

running status and reports errors to the OM system.

Data check

The digital signature technique is adopted to prevent the software from being tampered

during transmission and storage.

The software performs regular or event-driven data consistency check, restores the data

selectively or preferably, and generates logs and alarms.

Data backup

Both the Back Administration Module and the host board support data backup to ensure

data reliability and consistency.

Operation logs

The system automatically records the history operations into logs. The operation logs

help in identifying and rectifying the faults caused by improper operations.

TNUa Board redundancy

XPUb Board redundancy




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3 Configurations

3.1 Overview

Based on the TCS configuration, the BSC6900 GSM supports three types of configuration

modes, namely, BM/TC combined, BM/TC separated, and A over IP. The BSC6900 GSM is

compatible with all the hardware configuration of the BSC6000 in the existing network. The

BSC6000 can be upgraded to the BSC6900 GSM through software upgrade. If the hardware

configuration does not change, the system specifications remain unchanged.

3.2 Hardware Configuration in BM/TC Combined Mode

In BM/TC combined mode, the BSC is not configured with the TCS. The boards that handle

the TC functionality are installed in the MPS or EPS. With the same capacity, fewer cabinets

and fewer subracks are required in the BSC, thus increasing the hardware integration.

‎Table 3-1 describes the typical configuration specifications of a single subrack when the

BSC6900 GSM in BM/TC combined mode is configured with the HW69 R13 boards.

Table 3-1 Typical configuration specifications of the BSC6900 GSM (BM/TC combined)

Item 1 MPS 1 MPS + 1 EPS 1 MPS + 2 EPSs

Number of cabinets 1 1 1

Max equivalent BHCA

(k)

1,750 4,375 5,900

Traffic volume (Erl) 6,500 16,250 24,000

Number of TRXs 1,024 2,560 4,096

Number of active

PDCHs (MCS-9)

4,096 10,240 16,384




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3.3 Hardware Configuration in BM/TC Separated Mode

In BM/TC separated mode, the BSC is configured with a separate TCS, which is located in

the TCR on the MSC side. In this manner, the transmission resources between the BSC and

the MSC are saved.


BSC6900 GSM in BM/TC separated and Abis over non-IP mode is configured with the

HW69 R13 boards.

Table 3-2 Typical configuration specifications of the BSC6900 GSM (BM/TC separated and Abis

over non-IP)

Item 1 MPS + 1 TCS

1 MPS + 1 EPS + 2 TCSs

1 MPS + 2EPS + 3 TCSs


Max equivalent

BHCA (k)

1,750 4,375 5,900


Number of TRXs 1,024 2,560 4,096

Number of active

PDCHs (MCS-9)

4,069 10,240 16,384


BSC6900 GSM in BM/TC separated and Abis over IP mode is configured with the HW69

R13 boards.

Table 3-3 Typical configuration specifications of the BSC6900 GSM (BM/TC separated and Abis

over IP)

Item 1 MPS + 1 TCS 1 MPS + 1 EPS + 3 TCSs

1 MPS + 2 EPSs + 3 TCSs


Max equivalent BHCA

(k)

1,750 5,250 5,900


Number of TRXs 1,024 3,072 4,096

Number of active

PDCHs (MCS-9) 4,096 12,288 16,384




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3.4 Hardware Configuration in A over IP Mode

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.


BSC6900 GSM in A over IP mode is configured with the HW69 R13 boards.

Table 3-4 Typical configuration specifications of the BSC6900 GSM (A over IP)

Item 1 MPS 1 MPS + 1 EPS 1 MPS + 2 EPSs


Max equivalent BHCA (k) 1,750 5,250 5,900


Number of TRXs 1,024 3,072 4,096

Number of active PDCHs

(MCS-9)

4,096 12,288 16,384




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4 Operation and Maintenance

4.1 Overview

The BSC6900 GSM provides convenient local maintenance and remote maintenance, and it

supports multiple OM modes.

The BSC6900 GSM provides a hardware-independent universal OM mechanism and provides

OM functions such as security management, fault management, alarm management,

equipment management, and software management.

The Man Machine Language (MML) provides OM and configuration functions, and the

Graphic User Interface (GUI) provides the OM functions. The two modes meet the

requirements of different operation environments.

‎Figure 4-1 shows the OM networking of the BSC6900 GSM.




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Figure 4-1 OM networking of the BSC6900 GSM

The OM system of the BSC6900 GSM adopts the browser/server (B/S) separated mode. The

OMUc board of the BSC6900 GSM works as the server, and the Local Maintenance Terminal

(LMT) is used for local maintenance. The iManager M2000 is the centralized OM system,

which is used for remote maintenance.

The alarm box connects to the LMT and provides audible and visible indications for alarms.

4.2 Benefits

Web-based LMT Improving User Experience

The OM system of the BSC6900 GSM uses the web-based LMT. You can connect the LMT to

the OMUc board to perform OM functions and obtain the online help of the LMT. All the

operation results are displayed on the LMT through the web browser.

Diversified OM Modes

The BSC6900 GSM provides local maintenance and remote maintenance and supports

multiple OM modes.

The LMT used for local maintenance can access the BSC6900 GSM in the following ways:

Through the port on the panel of the OMUc board

Through the Virtual Local Area Network (VLAN)

Through the Intranet or Internet

Alarm Box

VLAN

LMT LMT

iManager M2000

BSC6900 GSM




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The iManager M2000 used for remote maintenance can access the BSC6900 GSM in the

following ways:

Through the VLAN

Through the Intranet or Internet

Powerful Hardware Management Functions for Quickly Locating and Rectifying Hardware Faults

The BSC6900 GSM provides precaution mechanism for hardware fault, thus ensuring that

sufficient time is available to rectify the fault in time before the services are disrupted.

The BSC6900 GSM provides functions such as status query, data configuration, and status

management of the internal physical devices.

When a hardware fault occurs, the BSC6900 GSM alerts the user by generating alarms and

flashing indicators and provides suggestions to guide the user in troubleshooting. The alarm is

cleared upon the rectification of the fault.

The BSC6900 GSM provides the functions of isolating the faulty part, such as activating or

deactivating the faulty part. When a faulty part needs to be replaced, the hot swapping

function enables the quick power-on of the substitute, thus reducing the time in fault

rectification.

In case of emergency, you can reset the board to quickly rectify the fault.

Advanced Software Management Functions for Secure and Smooth Upgrade

The BSC6900 GSM provides the remote upgrade tool, which enables the operator to upgrade

the software at the operation and maintenance center without affecting the ongoing services.

The remote upgrade tool provides the function of backing up the crucial data in the system.

When the upgrade fails, version rollback is performed immediately and the system returns to

normal in a short period.

After the upgrade is complete, version consistency check is performed to ensure the version

correctness.

Rich Tracing and Detection Mechanisms for Reliably Monitoring the Network Status

The BSC6900 GSM provides the tracing and detection functions at different layers and levels

to accurately locate faults. The tracing and detection functions include user tracing, interface

tracing, message tracing, fault detection on the physical layer, fault detection on the data link

layer, and detection of other faults.

The tracing messages are saved as files, which can be viewed through the review tracing

function of the LMT.

Easy Equipment Installation, Commissioning, and Efficient Network Upgrade Scheme for Quick Network Rollout

Before delivery, Huawei BSC6900 GSM is installed with boards, operating system, and

common data. In addition, it is correctly assembled and passes the strict test. You only need

to install the cabinet and cables on site. After the hardware installation is complete, you can

load software and data files to commission the software and hardware.




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The BSC6900 GSM is compatible with the configuration of the BSC6000 in the existing

network. The BSC6000 can be upgraded to the BSC6900 GSM through hardware adjustment

and software upgrade, thus maximizing the resource utilization in the existing network and

reducing the cost of network rollout.

Steady Security Operation Mechanism, Preventing Improper Operations

The BSC6900 GSM provides man-machine interfaces and prompts users to repeatedly

confirm an important operation. This ensures that an operation is performed only when it is

required and prevents service disruptions caused by improper operations.




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5 Technical Specification

5.1 Technical Specifications

5.1.1 Capacity Specifications

Table 5-1 Capacity specifications of the BSC6900 GSM

Item Specification

Max equivalent BHCA (k) 5,900

Traffic volume (Erl) 24,000

Number of TRXs 4,096

Number of configured PDCHs 30,720

Number of active PDCHs (MCS-9) 16,384

Gb interface throughput (Mbit/s) 1,536

The Max equivalent BHCA is the equivalent BHCA under huawei's traffic model, compare with

BHCA (only call and called) the value should be 1440K.

5.1.2 Structural Specifications

Item Specification

Cabinet standard The structural design conforms to the IEC60297

standard and IEEE standard.

Dimensions (height x width x

depth)

2,200 mm x 600 mm x 800 mm

Height of the available space 46 U




Page 25 of 31

Item Specification

Cabinet weight in full

configuration

≤ 320 kg

Load-bearing capacity of the

floor in the equipment room

≥‎450‎kg/m2

5.1.3 Clock Specifications

Item Specification

Clock precision It meets the requirements for the stratum-3 clock.

Clock accuracy ±4.6 x 10-6

Pull-in range ±4.6 x 10-6

Maximum frequency

offset 2 x 10-8/day

Initial maximum

frequency offset 1 x 10-8

5.1.4 Electrical Specifications

Item Sub-Item Specification

Power input Power input –48 V DC

Power range –40 V to –57 V

Power

consumption

Power consumption in a

subrack

MPS:‎≤‎1,400 W

EPS:‎≤‎1,400 W

TCS:‎≤‎1,000 W

Power consumption of a cabinet

in full configuration MPR(BM/TC combined):‎≤‎4,200 W

MPR(BM/TC separated):‎≤ 3,200 W

TCR:‎≤ 2,400 W




Page 26 of 31

5.1.5 Space Specifications

Figure 5-1 Space requirements in the equipment room

In overhead cabling mode, the distance between the cabinet top and the ceiling of the

equipment room must be greater than or equal to 1,000 mm.

In underfloor cabling mode, the height of the ESD floor must be greater than or equal to

200 mm.

The spacing shown in ‎Table 5-1 is the minimum possible value. The actual spacing is

wider than that shown in ‎Table 5-1.

5.1.6 Environmental Specifications

Item Specification

Storage Environment

Transportation Environment

Operating Environment

Temperature

range –40ºC to +70ºC –40ºC to +70ºC Long-term: 0ºC to 45ºC

Short-term: –5ºC to +55ºC

Humidity

range

10% RH to 100%

RH

5% RH to 100%

RH

Long-term: 5% RH to 85%

RH

Short-term: 5% RH to 95%

RH

NOTE

Short-term operation refers to the operation with the duration not more than 96 hours at a time and with

the accumulative duration not more than 15 days a year.




Page 27 of 31

5.1.7 Transmission Ports

Transmission Type Connector

E1/T1 DB44

Channelized STM-1/OC-3 LC/PC

FE RJ45

GE RJ45

LC/PC

5.1.8 Reliability Specifications

Item Specification

System availability > 99.999%

Mean Time Between Failures

(MTBF) ≥ 576,000 hours

Mean Time To Repair (MTTR) ≤ 1 hours

5.2 Compliance Standards

5.2.1 Power Supply Standards

Item Standard

Power supply ETS300 132-2

5.2.2 Grounding Standards

Item Standard

Grounding ETS300 253

5.2.3 Environment Standards

Item Standard

Noise ETS300 753




Page 28 of 31

Item Standard

GR-63-CORE

5.2.4 Safety Standards

Item Standard

Shock proofing ETS300 019-2-4-AMD

GR-63-CORE

YDN5083

Safety IEC60950, EN60950, UL60950

IEC60825-1

IEC60825-2

IEC60825-6

GB4943

GR-1089-CORE

Surge protection IEC 61024-1 (1993)

IEC 61312-1 (1995)

IEC 61000-4-5 (1995)

ITU-T K.11 (1993)

ITU-T K.27 (1996)

ITU-T K.41 (1998)

EN 300 386 (2000)

GR-1089-CORE (1999)

YDJ 26-89

GB 50057-94

YD5098-2001

5.2.5 EMC Standards

Item Standard

EMC ETSI EN 300 386 V1.3.2 (2003-05)

CISPR 22 (1997)




Page 29 of 31

Item Standard

IEC61000-4-2

IEC61000-4-3

IEC61000-4-4

IEC61000-4-5

IEC61000-4-6

IEC61000-4-29

GB9254-1998

FCC Part 15

NEBS Bellcore GR-1089-CORE issue 2

5.2.6 Environment Standards

Item Standard Class

Storage environment ETS300 019-1-1 CLASS 1.2

Transportation

environment

ETS300 019-1-2 CLASS 2.3

Operating environment ETS300 019-1-3 CLASS 3.1




Page 30 of 31

6 Acronyms and Abbreviations

Acronym and Abbreviation Expansion

BHCA Busy Hour Call Attempt

BM Basic Module

CPU Central Processing Unit

DSP Digital Signal Processor

EPS Extended Processing Subrack

FE Fast Ethernet

GE Gigabit Ethernet

GUI Graphic User Interface

ICCP Internal Communication Control Plane

IP Internet Protocol

LMT Local Maintenance Terminal

LVDS Low Voltage Differential Signal

MGW Media Gateway

MML Man Machine Language

MPR Main Processing Rack

MPS Main Processing Subrack

MSP Multiplex Section Protection

MTBF Mean time between failures

MTTR Mean Time To Recovery

OM Operation & Maintenance

OS Operating System




Page 31 of 31

Acronym and Abbreviation Expansion

PDCH Packet Data Channel

RRM Radio Resource Management

SDH Synchronous Digital Hierarchy

STCP Service Transport Control Plane

SMP Service Management Plane

TC TransCoder

TCR TransCoder Rack

TCS TransCoder Subrack

TDM Time Division Multiplexing

TRX Transceiver

VLAN Virtual Local Area Network

54944187-GBSS13-0-BSC6900-Product-Description-V1-0-20100730

Documents

hw69 r13 boards

typical configuration

signaling

service processing

cabinetsmax

remote upgrade

bmtc combined

clock processing