Product Description for Gsm

GBSS9.0 BSC6900 Product Description

Issue V1.2

Date 2009-09-30

HUAWEI TECHNOLOGIES CO., LTD.

Copyright © Huawei Technologies Co., Ltd. 2009. All rights reserved. No part of this document may be reproduced or transmitted in any form or by any means without prior written consent of Huawei Technologies Co., Ltd. Trademarks and Permissions

and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd. All other trademarks and trade names mentioned in this document are the property of their respective holders. Notice The purchased products, services and features are stipulated by the commercial contract made between Huawei and the customer. All or partial products, services and features described in this document may not be within the purchased scope or the usage scope. Unless otherwise agreed by the contract, all statements, information, and recommendations in this document are provided “AS IS” without warranties, guarantees or representations of any kind, either express or implied. The information in this document is subject to change without notice. Every effort has been made in the preparation of this document to ensure accuracy of the contents, but all statements, information, and recommendations in this document do not constitute the warranty of any kind, express or implied.

Huawei Technologies Co., Ltd.

Address: Huawei Industrial Base Bantian, Longgang Shenzhen 518129 People's Republic of China

Website: http://www.huawei.com

Email: [email protected]

http://www.huawei.com/

mailto:[email protected]


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..................................................................................................................................... 11 2.4 Reliability....................................................................................................................................................... 13

3 Configurations.............................................................................................................................16 3.1 Overview........................................................................................................................................................ 16 3.2 Hardware Configuration in BM/TC Combined Mode ................................................................................... 16 3.3 Hardware Configuration in BM/TC Separated Mode .................................................................................... 17 3.4 Hardware Configuration in A over IP Mode .................................................................................................. 18

4 Operation and Maintenance .....................................................................................................20 4.1 Overview........................................................................................................................................................ 20 4.2 Benefits .......................................................................................................................................................... 21

5 Technical Specifications ............................................................................................................24 5.1 Technical Specifications................................................................................................................................. 24 5.2 Compliance Standards.................................................................................................................................... 28

6 Acronyms and Abbreviations...................................................................................................31

Issue V1.2 (2009-09-30) Huawei Proprietary and Confidential

Copyright © Huawei Technologies Co., Ltd.

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1 Introduction

1.1 Positio

s

SPA+, and LTE. The operators have to meet challenges of rising operation

,

BSC6900 UMTS, or BSC6900 GU as required in different networks. The BSC6900 GSM, in compliance with the 3GPP R7,

s the GSM network and performs the functions of the GSM BSC. With the support of EDGE+, the BSC6900 GSM can be upgraded to the BSC6900 GU through addition of UMTS boards and software upgrade.

Figure 1-1 shows the BSC6900 GSM.

ning This product description is applicable to the BSC6900 V900R011 version.

The rapid development of mobile telecommunications technologies accelerates the upgrading and updating of the wireless products. Global System for Mobile communications (GSM) ideveloping towards Enhanced Data Rate for GSM Evolution (EDGE) and EDGE+ while Universal Mobile Telecommunications System (UMTS) is evolving into High-Speed Packet Access (HSPA), Hexpenditure (OPEX), continuous updating and upgrading of GSM products, ever-growing service demands, and increasingly intense competition. High integration, easy maintenanceIP transmission mode, and support of GSM and UMTS of the BSC draw wide public concern in the industry.

The BSC6900 is an important network element (NE) of Huawei SingleRAN solution. It adopts the industry-leading multiple radio access technologies, IP transmission mode, and modular design. It features high capacity, high integration, high performance, and low power consumption.

The BSC6900 can be flexibly configured as a BSC6900 GSM,

operates as an independent NE to acces



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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 role of the BSC6900 GSM in the network.

Figure 1-2 Role 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 BSC6900 GSM performs functions such as 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 3,072 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 12,288PDCHs, thus meeting the increasing requirements for packet service growth and reducing the cost of 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 BSC6900 GSM improves the PS service performance. The Abis, A, and Gb interfaces support IP transmission, which provides sufficient bandwidth and reduces transmission cost. The IP-based platform and interface meet the trend of flattened network and the requirements for network evolution.

Smooth Evolution for Investment Safety 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 a 3G network and secures the investment of the operator.



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2 Architecture

2.1 Overvi

e utilization and system reliability by fully interconnecting

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

le with the hardware of the BSC6000 in the existing network.

2.2 Hardw2.2.1 Cabinet

GSM cabinet is configured with subracks. In terms of the configured subrack, the BSC6900 GSM cabinet is classified into main processing rack (MPR), extended

If the number of subracks configured in e configured from the bottom up, as shown

i 1.

T -1 Classifi

ew 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. It enhances resourcsubracks 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

The BSC6900 GSM is compatib

are Architecture s

The BSC6900 GSM uses the standard N68E-22 cabinet. The design complies with the IEC60297 and IEEE standards.

The BSC6900

processing rack (EPR), and transcoder rack (TCR).the cabinet is less than three, the subracks should bn Figure 2-

able 2 cation of BSC6900 GSM cabinets

Cabinet Contained Subrack Configuration Principle

MPR 1 main processing subrack (MPS), and 0–2 extended processing subracks (EPSs)

One and only one MPR is configured.

EPR 1 EPS ice capacity, 0–1 EPR is configured. As required by the serv



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Cabinet Contained Subrack Configuration Principle

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

Figure 2-1 BSC6900 GSM cabinet

Power distribution boxFiller panel

Subrack

Air defence subrack

Subrack

Air defence subrack

Subrack

Filler panelFiller panel

2.2.2 Subrac subrack has a standard width e 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.

ks In compliance with the IEC60297 standard, the BSC6900 GSMof 19 inches. The height of each subrack is 12 U. The boards ar



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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); the TCS is called transcoder (TC) for short.

Table 2-2 Classification of BSC6900 GSM subracks

Subrack Quantity Function

MPS 1 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.

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

TCS 0-4 The TCS processes CS services and performs 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 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 2-3.

The BSC6900 V900R011 is added with new types of boards: OMUa, XPUb, FG2c, GOUc, POUc and GCGa. Other types of boards are inherited from the BSC6000 and can be used directly after the BSC6000 is upgraded to the BSC6900 GSM.

In this document, the new types of boards of the BSC6900 V900R011 are referred to as R11 boards, and other types of boards are referred to as legacy boards.



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Table 2-3 Classification of BSC6900 GSM boards

Board Type

Board Name

Function

OMUa OM board

OMUb

Performs configuration management, performance management, fault management, security management, and loading management for the BSC6900.

Works as the OM agent of the LMT/M2000 to provide the BSC6900 OM interface for the LMT/M2000 and to enable the communication between the BSC6900 and the LMT/M2000.

Works as the interface to provide web-based online help. The OMUa board enhances the functions of the OMUb board. The OMUa board has a higher performance than the OMUb board.

SCUa 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.

Switching processing board

TNUa Provides the TDM switching and serves as the center of the circuit switched domain.

Assigns the resources of the TDM network and establishes the network connection.

Provides the communication processing on the GE port.

GCUa Obtains the system clock source, performs the functions of phase-lock and holdover, and provides clock signals.

Clock processing board

GCGa Obtains the system clock source, performs the functions of phase-lock and holdover, and provides clock signals.

Receives and processes the GPS signals.

XPUa Manages user plane and signaling plane resources in the subrack and processes signaling.

Signaling processing board

XPUb Manages user plane and signaling plane resources in the subrack and processes signaling. The processing capability of the XPUb board is 75% to 100% higher than that of the XPUa board.

DPUc

Encodes and decodes GSM speech services, converts the speech frame format over the IP speech channel and the speech channel in HDLC transmission optimization, and processes speech services in the system.

Service processing board

DPUd Processes GSM data services.



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Board Board Function

Type Name

EIUa Provides 32 channels over E1/T1 electrical ports. Transmits, receives, encodes, and decodes the 32 E1s/T1s. The E1 transmission rate is 2.048 Mbit/s; the T1 transmission rate is 1.544 Mbit/s.

FG2a Provides eight channels over FE electrical ports or two channels over GE electrical ports.

Supports IP over FE/GE.

GOUa Provides two channels over GE optical ports. Supports IP over GE.

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 E1s/T1s over IP. Provides 32 E1s/T1s for HDLC transmission. Provides 32 E1s/T1s for FR transmission over the Gb interface. 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.

GOUc Provides four channels over GE optical ports. Supports IP over GE.

Interface processing board

POUc Provides four channels over the channelized optical STM-1/OC-3 ports based on IP/TDM protocols.

Provides the load bearer capability of 252 E1s or 336 T1s. Extracts the clock signals and sends the signals to the GCUa board.

2.3 Software Architecture The BSC6900 GSM software is designed with a layered architecture. Each layer is dedicated to its own functions and provides services for other layers; however, each layer hides the technical implementation details and physical topology from other layers. Figure 2-3 shows the software architecture of the BSC6900 GSM.



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Figure 2-3 Software architecture of the BSC6900 GSM

Infrastructure

SMP

ICCP

STCP

Application

Table 2-4 describes the functions of each layer in the software architecture.

Table 2-4 Functions of each layer in the BSC6900 GSM software architecture

Layer Function

Infrastructure Supports the hardware platform and hides the lower-layer hardware complication through board software package.

Provides the functions of the embedded operating system, hides the differences between operating systems, and provides enhanced and supplementary functions for the system.

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 independently 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.



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Layer Function

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 topologies 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.

Provides various service resources. These resources are closely related to the hardware. They encapsulate the TC/PCU and isolate the service control of the upper layer 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 reliability architecture design The design of dual switching planes, with up to 120 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. Moreover, port trunking technology 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 SCUa. 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 implements load sharing between the control plane and the user plane by employing the full resource pool design. This effectively avoids suspension because of overload, thus improving the resource utilization and system reliability.

Redundancy mechanism



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All the hardware in the BSC6900 GSM adopts 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 2-5, to support hot swap of boards and backup of important modules. Therefore, the system has a strong error tolerance capability.

Table 2-5 Board redundancy

Boards Redundancy Mode

DPUc/DPUd Board resource pool

EIUa Board redundancy

FG2a/FG2c Board redundancy + GE/FE port redundancy or load sharing

GCUa/GCGa Board redundancy

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

OIUa Board redundancy

OMUa/OMUb Board redundancy

PEUa Board redundancy

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

SCUa Board redundancy + port trunking on GE ports

TNUa Board redundancy

XPUa/XPUb Board redundancy



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Isolation mechanism is used. When entity A fails to accomplish a task, entity B that has the same functions as entity A takes over the task. Meanwhile, entity A is isolated until it is restored.

When a board with a single function is faulty, you can restart the board. All boards support dual-BIOS. Faults at one BIOS do not affect the startup or operation

of the boards. The system uses the non-volatile memory to store important data. With advanced integrated circuits, the system features 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 a resource deadlock occurs because of software faults, the check mechanism can release the locked 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 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 locating and rectifying the faults caused by improper operations.



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3 Configurations

3.1 Overviguration

modes: 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

e

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

e BSC, thus increasing the hardware

integration.

ed mode when the legacy boards are configured.

T iguration specifications of the BSC6900 GSM (BM/ combined, legacy b

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

BSC6000 can be upgraded to the BSC6900 GSM through software upgrade. If the hardwarconfiguration does not change, the system specifications remain unchanged.

are Configuration in BM/TC Combined Mode

implement the TC functions are inserted into the slots of the MPS or EPS. With the samecapacity, less cabinets and less subracks are required in th

Table 3-1 lists the typical configuration specifications of the BSC6900 GSM in BM/TC combin

able 3-1 Typical confoard)

TC

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

Number of cabinets 1 1 1

BHCA (k) 875 2,180 3,500

Traffic volume (Erl) 3,250 8,120 13,000

Number of TRXs 512 1,280 2,048

Number of active 2,048 5,120 8,192 PDCHs (MCS-9)

Table 3-2 lists the typical configuration specifications of the BSC6900 GSM in BM/TC combined mode when the R11 boards are configured.

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Table 3-2 Typical configuration specifications of the BSC6900 GSM (BM/TC combined, R11 board)

Item 1 MPS 1 MPS + 1 EPS

1 MPS + 2 EPSs

1 MPS + 3 EPSs

Number of cabinets 1 1 1 2

BHCA (k) 875 2,625 4,375 5,250

Traffic volume (Erl) 3,250 9,750 16,250 19,500

Number of TRXs 512 1,536 2,560 3,072

Number of active PDCHs (MCS-9)

2,048 6,144 10,240 12,288

3.3 Hardware Configuration in BM/TC Separated Mode 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.

Table 3-3 lists the typical configuration specifications of the BSC6900 GSM in BM/TC separated mode when the legacy boards are configured.

Table 3-3 Typical configuration specifications of the BSC6900 GSM (BM/TC separated, legacy board)

Item 1 MPS + 1 TCS

1 MPS + 1 EPS + 2 TCSs

1 MPS + 2 EPSs + 2 TCSs


BHCA (k) 875 2,180 3,500




2,048 5,120 8,192

Table 3-4 lists the typical configuration specifications of the BSC6900 GSM in BM/TC separated and Abis over non-IP mode when the R11 boards are configured.



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Table 3-4 Typical configuration specifications of the BSC6900 GSM (BM/TC separated and Abis over non-IP, R11 board)

Item 1 MPS + 1 TCS

1 MPS + 1 EPS + 2 TCSs

1 MPS + 2EPS + 3 TCSs


BHCA (k) 1,750 3,500 5,250


Number of TRXs 1,024 2,048 3,072


4,069 8,192 12,288

Table 3-5 lists the typical configuration specifications of the BSC6900 GSM in BM/TC separated and Abis over IP mode when the R11 boards are configured.

Table 3-5 Typical configuration specifications of the BSC6900 GSM (BM/TC separated and Abis over IP, R11 board)

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

Number of cabinets 2 2

BHCA (k) 1,750 5,250

Traffic volume (Erl) 6,500 19,500

Number of TRXs 1,024 3,072


4,096 12,288

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 securing 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.

Table 3-6 lists the typical configuration specifications of the BSC6900 GSM in A over IP mode when the legacy boards are configured.

Table 3-6 Typical configuration specifications of the BSC6900 GSM (A over IP, legacy board)





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BHCA (k) 875 2,180 3,500




2,048 5,120 8,192

Table 3-7 lists the typical configuration specifications of the BSC6900 GSM in A over IP mode when the R11 boards are configured.

Table 3-7 Typical configuration specifications of the BSC6900 GSM (A over IP, R11 board)

Item 1 MPS 1 MPS + 1 EPS

Number of cabinets 1 1

BHCA (k) 1,750 5,250

Traffic volume (Erl) 6,500 19,500

Number of TRXs 1,024 3,072


4,096 12,288



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2009-09-30

4 Operation and Maintenance

4.1 Overview and it

vides

.

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

The BSC6900 GSM provides convenient local maintenance and remote maintenance,supports multiple OM modes.

The BSC6900 GSM provides a hardware-independent universal OM mechanism and proOM functions such as security management, fault management, alarm management,equipment management, and software management

The Man Machine Language (MML) provides OM and config

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

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adopts the browser/server (B/S) separated mode. The e

used for remote maintenance.

e the LMT and provides audible and visible indications for alarms.

Web-based LMThe OM system of the BSC6900 GSM uses the web-based LMT, which need not be installed

T. All the operation results are displayed on the

Diversified O

Through the Virtual Local Area Network (VLAN)

The OM system of the BSC6900 GSM OMUa/OMUb board of the BSC6900 GSM works as the server, and the Local MaintenancTerminal (LMT) is used for local maintenance. The iManager M2000 is the centralized OMsystem, which is

Th alarm box connects to

4.2 Benefits

T Improving User Experience

with any OM software. You can connect the LMT to the OMUa/OMUb board to perform OMfunctions and obtain the online help of the LMLMT through the web browser.

M 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 OMUa/OMUb board

Alarm Box

VLAN

LMT LMT

iManager M2000

BSC6900 GSM



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Through the Intranet and Internet

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

Through the VLAN Through the Intranet and Internet

2009-09-30

Powerful Hard of Hardware Faults

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

us

e the user in troubleshooting. The alarm is

ovides 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

Advanced Sofe operator to upgrade

s.

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 of multiple layers and multiple 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 Rapid Network Establishment

Before delivery, Huawei BSC6900 GSM is installed with boards, operating system, and common data. In addition, it is correctly assembled and passes the rigid test. You only need

ware Management Functions for Rapid Location and Rectification

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

The BSC6900 GSM provides functions such as status query, data configuration, and statmanagement 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 guidcleared upon the rectification of the fault.

The BSC6900 GSM pr

function enables the rapid 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.

tware Management Functions for Secure and Smooth Upgrade The BSC6900 GSM provides the remote upgrade tool, which enables ththe software at the operation and maintenance center without affecting the ongoing serviceThe 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 tonormal in a short period.



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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.

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.



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5 Technical Specification

5.1 Technical Specifications s

T -1 Capacity specificatio 0 GSM configured with the legacy boards

5.1.1 Capacity Specification

able 5 ns of the BSC690

Item Specification

BHCA (k) 3,500

Traffic volume (Erl) 13,000

Number of TRXs 2,048

Number of configured PDCHs

15,360


8,192

Gb interface throughput 512 (Mbit/s)

T city of the BSC6900 GSM config e R11 boards able 5-2 Capa specifications ured with th

Item Specification

BHCA (k) 5,250

Traffic volume (Erl) 19,500

Number of TRXs 3,072

Number of confi 23,040 gured PDCHs


12,288



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Item Specification

Gb int(Mbit/

erface throughput s)

1,024

5.1.2 Structural Specifications Item Specification

Cabinet standard The structural design conforms to the IEC60297 s IEEE standard. tandard and

Dimensions (height x width x depth)

2 m x 800 mm ,200 mm x 600 m

Height of the available space 46 U

Cabinet weight in full configuration

≤ 320 kg

Load-bearing capacity of the ≥ 450 kg/m2 floor in the equipment room

pecifications 5.1.3 Clock SItem 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



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5.1.4 Electrical Specifications Item Sub-Item Specification

Power input –48 V DC Power input

–40 V to –57 V Power range

Power consumption in a s MEPS: ≤ 1,000 W TC

ubrack PS: ≤ 1,000 W

S: ≤ 1,000 W

Power consumption

Power consumption of a cabinet in full configuration

MEP 0 W TCR: ≤ 3,000 W

PR: ≤ 3,000 W R: ≤ 3,00

5.1.5 Space Specifications Position in 0Item Recommended Value

Spacing between the caand the wall

ble ladder 800 1) mm

Spacing between the side of the

200 m 2) cabinet and the cable ladder

m

Spacing between the side of the cabinet and the wall

800 5) mm

Width of the main aisle 1,000 mm 4)

Spacing between the front (rear) side of the cabinet and the wall

800 mm 3)

Spacing of cabinet front (rear) between two adjacent cabinet rows

1,800 mm 6)



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Figure 5-1 Space requirements in

2009-09-30

the equipment room

In overhead cablin ance 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

5.1.6 Environmental Specifications

g mode, the dist

200 mm.

Specification Item

Storage Transportation Operating Environment Environment Environment

Temperature –40ºC –40ºC to +70ºC Long-term: 0ºC to 45ºC Short-term: –5ºC to +55ºC

to +70ºC range

Humidity range

10% RRH

5% RH to 100% RH

Long-term: 5% RH to 85% RH Short-term: 5% RH to 95% RH

H to 100%

NOTE Short-term operation refers to the operation with the duration not more than 96 hours at a time and with the accumulative duration s a year. not more than 15 day



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5.1.7 Transmission Ports Transmission Type Connector

E1/T1 DB44

Channelized STM-1/OC PC -3 LC/

FE RJ45

RJ45 GE

LC/PC

5.1.8 Reliability Specifications Item Specification

System availability > 99.999%

Mean Time Between Fai)

≥ 409,300 hours (legacy boards are configured) boards are configured)

lures (MTBF ≥ 525,000 hours (R11

Mean Time To Repair hours (MTTR) ≤ 1

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



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5.2.3 Environment Standards Item Standard

ETS300 753 Noise

GR-63-CORE

5.2.4 Safety Standards Item Standard

ETS300 0 19-2-4-AMDShock proofing

GR-63-CORE

YDN5083

IEC60950, EN60950, UL60950 Safety

IEC60825-1

IEC60825-2

IEC60825-6

GB4943

GR-1089-CORE

IEC 61024-1 (1993) Surge pr

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

otection

YD5098-2001



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5.2.5 EMC Standards Item Standard

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

CISPR 22 (1997)

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



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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

PDCH Packet Data CHannel

RRM Radio Resource Management

SDH Synchronous Digital Hierarchy

STCP Service Transport Control Plane




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Acronym and Abbreviation Expansion

SMP Service Management Plane

TC TransCoder

TCR TransCoder Rack

TCS TransCoder Subrack

TDM Time Division Multiplexing

TRX Transceiver

VLAN Virtual Local Area Network

Product Description for Gsm

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