ProductDescriptionForGSM-BSC6900.pdf

GBSS13.0 BSC6900 Product Description

Issue V1.1

Date 2011-03-31

HUAWEI TECHNOLOGIES CO., LTD.

Copyright © Huawei Technologies Co., Ltd. 2011. 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 the property 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..................................................................................................................................... 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

Issue V1.1 (2011-03-31) Huawei Proprietary and Confidential

Copyright © Huawei Technologies Co., Ltd.

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1 Introduction

1.1 Positio

rading

. The operators have to meet challenges of rising operation

,

6900 GU as required in different networks. The BSC6900 GSM, in compliance with 3GPP Release

ies ith the support for EDGE+, the BSC6900 GSM can be ddition 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.

ning This product description is applicable to the BSC6900 V900R013 version.

The rapid development of mobile telecommunications technologies accelerates the upgof 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 LTEexpenditure (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 BSC

8, operates as an independent NE to access the GSM network, and handles the functionalitof the Base Station Controller(BSC). Wupgraded to the BSC6900 GU through a



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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 Overvi

ization and system reliability are enhanced 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

The BSC6900 GSM cabinet is configured with subracks. In terms of the configured subrack, rocessing rack (MPR), extended as described in Table 2-1. The subracks

s onfigu

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. The resource utilsubracks 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 GSM cabinet is classified into main pprocessing rack (EPR), and transcoder rack (TCR),hould be c red from the bottom up.

able 2 cation 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.



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

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 TCS is called transcoder (TC) for short.

T lass SC ubracks

are generally called the basic module (BM), and the

able 2-2 C ification of B 6900 GSM s

Subrack Quantity Functions

MPS 1 affic paths for other subracks. It also provides the service processing The MPS performs centralized switching and provides tr

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 boards.

T rdw onding boards

Table 2-3 lists the hardware version and its corresponding

able 2-3 Ha are version and its corresp

Hardware Version

Corresponding Board

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



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OMUa, SCUa, TNUa, GCGa, GCUa, DPUc, DPUd, XPUb, EIUa, FG2c, GOUc, OIUa, PEUa, POUc

HW69 R11

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 previohardware version.

us

s having the same specifications, some boards of BSC6900 UMTS can substitute for the boards of ple, an SPUa board can substitute for an XPUa board, an SPUb board can

ard.

BSS versions.

T appin rsio

ABSC6900 GSM. For examsubstitute for an XPUb board, and an DPUb board can substitute for an DPUc or DPUd bo

Table 2-4 describes the mapping between hardware versions and G

able 2-4 M g between hardware ve ns and GBSS versions

BSC6000

BSC6900 Hardware Version

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, d, service processing board, and interface

Table 2-5 Classif f BSC6900 GSM boards

clock processing board, signaling processing boarprocessing board, as described in Table 2-5.

ication o

Board Type Board Name

Functions

OM board OMUc

de the g

to provide web-based online help. Differences: The OMUc board occupies only one slot and supports one hard disk.

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 proviBSC6900 OM interface for the LMT/M2000, thus achievinthe communication between the BSC6900 and the LMT/M2000.

Works as the interface



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Board Type Board Functions Name

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.

Switching processing board

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.

GCUa Clock processing board GCGa

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.

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.

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.

Service processing board

DPUg Processes GSM data services.

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

Interface processing board

OIUa Provides one channel over the STM-1 optical port. Provides one channelized STM-1 with the rate of 155.52 Mbit/s.



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Board Type Board Functions Name

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.

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.



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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.

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.



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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. 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 functional 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.



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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

TNUa Board redundancy

XPUb Board redundancy

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



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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.



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3 Configurations

3.1 Overviguration

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

e

3.2 Hardware Configuration in BM/TC Combined Mode dle

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

e B 0 GSM in BM/TC d mode is con W69

T iguration specifications of th SC6900 GSM (BM/ combined)

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.

In BM/TC combined mode, the BSC is not configured with the TCS. The boards that hanthe TC functionality are installed in the MPS or EPS. With the same capacity, fewer cabi

Table 3-1 describes the typical configuration specifications of a single subrack when thSC690 combine figured with the H R13 boards.

able 3-1 Typical conf e B TC

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

Number of cabinets 1 1 1

Max equivalent BH(k)

CA 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 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

Table 3-2 describes the typical configuration specifications of a single subrack when the B 0 GSM in BM/TC nd Ab coHW69 R13 boards.

T igu on specifications e BSC6900 GSM (BM C separated and Abis o

In BM/TC separated

the MSC are saved.

SC690 separated a is over non-IP mode is nfigured with the

able 3-2 Typical conf rati of th /Tver non-IP)

Item 1 MPS + 1 1 MPS + 1 EPS + 2 1 MPS + 2EPS + 3 TCS TCSs TCSs


Max equivalent BHCA (k)

1,750 4,375 5,900


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

Number of active PDCHs (MC

4,069 10,240 16,384 S-9)

Table 3-3 describes the typical configuration specifications of a single subrack when the B 0 GSM in BM/TC igR13 boards.

T iguration specifications of BSC6900 GSM (B TC separated and Abis o

SC690 separated and Abis over IP mode is conf ured with the HW69

able 3-3 Typical conf the M/ver IP)

Item 1 MPS + 1 TCS 1 MPS + 1 EPS + 1 MPS + 2 EPSs + 3 3 TCSs TCSs


Max equivalent BH(k)

CA 1,750 5,250 5,900


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


4,096 12,288 16,384



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3.4 HardwIn A over IP mode, the BSC directly connects to the Huawei core network without using the

e to the reduc of encoding and deco e A over IP eds for e n.

T e typica guration specif tions of a single subrack when the B m configured w W69 R13 boa

T ration cations of the 0 GSM (A ove

are Configuration in A over IP Mode

TC, thus protecting the operator's investment and improving the voice quality dution

volutioding. Th mode meets the ne network

able 3-4 describes th l confi icaSC6900 GSM in A over IP ode is ith the H rds.

able 3-4 Typical configu specifi BSC690 r 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


4,096 12,288 16,384



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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

iManage

he

local maintenance. The iManager M2000 is the centralized OM system, aintenance.

e d provides audible and visible indications for alarms.

Web-based LM to

btain the online help of the LMT. All the

Diversified O

Through the Virtual Local Area Network (VLAN) Through the Intranet or Internet

The OM system of the BSC6900 GSM adopts the browser/server (B/S) separated mode. TOMUc board of the BSC6900 GSM works as the server, and the Local Maintenance Terminal (LMT) is used forwhich is used for remote m

Th alarm box connects to the LMT an

4.2 Benefits

T Improving User Experience The OM system of the BSC6900 GSM uses the web-based LMT. You can connect the LMTthe OMUc board to perform OM functions and ooperation results are displayed on the LMT 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 OMUc board

Alarm Box

VLAN

LMT LMT

r M2000

BSC6900 GSM



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Powerful Hard unctions for Quickly Locating and Rectifying Hardware Fau

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

The BSC6900 GSM provides functions such as status query, data configuration, and status management of the internal physical devices.

uick power-on of the substitute, thus reducing the time in fault

eset the board to quickly rectify the fault.

Advanced Sof

he ongoing services. .

onsistency check is performed to ensure the version correctness.

work Status

nt 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.

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

Through the VLAN Through the Intranet or Internet

ware Management Flts

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

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 iscleared 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 qrectification.

In case of emergency, you can r

tware Management Functions for Secure and Smooth Upgrade The BSC6900 GSM provides the remote upgrade tool, which enables the operator to upgradethe software at the operation and maintenance center without affecting tThe remote upgrade tool provides the function of backing up the crucial data in the systemWhen the upgrade fails, version rollback is performed immediately and the system returns to functional in a short period.

After the upgrade is complete, version c

Rich Tracing and Detection Mechanisms for Reliably Monitoring the Net

The BSC6900 GSM provides the tracing and detection functions at differe



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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 MechanismThe BSC6900 GSM provides manconfirm an important operation. This ensures that an operation is performed only when it is required and prevents service disruptions caused by improper operations.

, Preventing Improper Operations -machine interfaces and prompts users to repeatedly



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5 ation Technical Specific

5.1 Technic pecification5.1.1 Capacit ations

able 5-1 Capacity specifications of the BSC6900 GSM

al S s y Specific

T

Item Specification

Max equivalent BHCA (k) 5,900

Traffic volume (Erl) 24,000

Number of TRXs 4,096

Number of confi 20 gured PDCHs 30,7

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



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Item Specification

Cabinet weight in full ≤ 320 kg configuration

Load-bearing capacity of the floor in the equipment room

≥ 450 kg/m2

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

Specifications 5.1.4 ElectricalItem Sub-Item Specification

Power input

–48 V DC Pow

Power range –40 V to –57 V

er input

Power consumption in a subrack

MPS: ≤ 1,400 W EPS: ≤ 1,400 W TCS: ≤ 1,000 W

Power consumption

Power conin full configurat

sumption ofion

M(BM/TC separated): ≤ 3,200 W ≤ 2,

a cabinet MPR(BMPR

/TC combined): ≤ 4,200 W

TCR: 400 W



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F ents in the equipm

5.1.5 Space Specifications

igure 5-1 Space requirem ent 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

re 5-1 is the minimum possible value. The actual spacing is 1.

5.1.6 Environmental Spec ns

200 mm. The spacing shown in Figu

wider than that shown in Figure 5-

ificatioSpecification Item

Storage Transportation Operating Environment Environment Environment

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

Humidity range

10% RH

5% RH to 100% RH

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

RH to 100%

NOTE Short-termthe ac

operation re tion with the duration not more than 96 hours at a time and with cumulative duration not more than 15 days a year.

fers to the opera



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5.1.7 Transmission Ports Transmission Type Connector

E1/T1 DB44

Channelized STM-1/OC-3 LC/PC

FE RJ45

RJ45 GE

LC/PC

5.1.8 Reliabi pecificatility S ons Item Specification

System availability 9.999% > 9

Mean Time Between Fai(MTBF) ≥ 576,000 hours lures

Mean Time To Repair (M ours TTR) ≤ 1 h

5.2 Compliance Standar5.2.1 Power Supply Standa

ds rds

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



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Item Standard

GR-63-CORE

5.2.4 Safety Standards Item Standard

ETS300 019-2-4-AMD Shock proofing

GR-63-CORE

YDN5083

IEC60950, EN60950, UL60950

IEC60825-1

IEC60825-2

IEC60825-6

GB4943

Safety

GR-1089-CORE

I ) EC 61024-1 (1993Surge protection

IEC 61312-1 (1995)

IEC 61 95) 000-4-5 (19

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

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

CISPR 22 (1997)



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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 Bellc ORE issue 2 ore GR-1089-C

5.2.6 Environment Standards Item Standard Class

Storage environment ETS300 CLASS 1.2 019-1-1

Transportation ment

ETS300 CLASS 2.3 environ

019-1-2

Operating environment ETS300 CLASS 3.1 019-1-3



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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



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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

ProductDescriptionForGSM-BSC6900.pdf

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