BSC6910 Product Description

8/20/2019 BSC6910 Product Description

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SRAN8.0&GBSS15.0&RAN15.0 BSC6910

Product Description

Issue Draft A

Date 2012-05-30

HUAWEI TECHNOLOGIES CO., LTD.


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SRAN8.0&GBSS15.0&RAN15.0 BSC6910 Product

Description Contents

Copyright © Huawei Technologies Co., Ltd. 2012. All rights reserved.

No part of this document may be reproduced or transmitted in any form or by any means withoutprior 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 respectiveholders.

Notice

The purchased products, services and features are stipulated by the contract made between Huawei andthe customer. All or part of the products, services and features described in this document may not be

within the purchase scope or the usage scope. Unless otherwise specified in the contract, all statements,

information, and recommendations in this document are provided "AS IS" without warranties, guaranteesor 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 thepreparation of this document to ensure accuracy of the contents, but all statements, information, and

recommendations in this document do not constitute a 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]


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Contents

1 Introduction ........................................................................................................................... 1-1

1.1 Positioning .................................................................................................................................................... 1-1

1.2 Benefits ......................................................................................................................................................... 1-3

2 Architecture ............................................................................................................................. 2-1

2.1 Overview ....................................................................................................................................................... 2-1

2.2 Hardware Architecture .................................................................................................................................. 2-1

2.2.1 Cabinets ............................................................................................................................................... 2-1

2.2.2 Subracks ............ ............. .............. ............ .............. ............. ............ .............. ............. .............. ............ 2-2

2.2.3 Boards .................................................................................................................................................. 2-3

2.3 Software Architecture .................................................................................................................................... 2-6

2.4 Reliability ............ .............. ............. ............ .............. ............. .............. ............ ............. .............. .............. ..... 2-7

2.4.1 System Reliability ................................................................................................................................ 2-8

2.4.2 Hardware Reliability ............................................................................................................................ 2-8

2.4.3 Software Reliability ............................................................................................................................. 2-9

3 Configurations ......................................................................................................................... 3-1

3.1 Overview ....................................................................................................................................................... 3-1

3.2 Capacity Configuration of the BSC6910 GSM ............................................................................................. 3-2

3.3 Capacity Configuration of the BSC6910 UMTS ............. ............. ............ .............. ............. .............. ............ 3-3

3.3.1 Capacity of the BSC6910 UMTS in the High-PS Traffic Model .............. ............. ............ .............. .... 3-3

3.3.2 Capacity of the BSC6910 UMTS in the Traffic Model for Smart Phones ............. ............ .............. .... 3-4

3.4 Capacity Configuration of the BSC6910 GU ................................................................................................ 3-5

4 Operation and Maintenance ................................................................................................ 4-1

4.1 Overview ....................................................................................................................................................... 4-1

4.2 Benefits ......................................................................................................................................................... 4-2

5 Technical Specifications .......................................................................................................... 5-1

5.1 Technical Specifications ................................................................................................................................ 5-1

5.1.1 Capacity Specifications ........................................................................................................................ 5-1

5.1.2 Structural Specifications ...................................................................................................................... 5-2

5.1.3 Clock Specifications ............................................................................................................................ 5-2

5.1.4 Electrical Specifications ....................................................................................................................... 5-3

5.1.5 Space Specifications ............................................................................................................................ 5-3


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5.1.6 Environmental Specifications .............................................................................................................. 5-4

5.1.7 Transmission Ports ............................................................................................................................... 5-4

5.1.8 Reliability Specifications ..................................................................................................................... 5-4

5.2 Compliance Standards ................................................................................................................................... 5-5

5.2.1 Power Supply Standard ........................................................................................................................ 5-5

5.2.2 Grounding Standard ............................................................................................................................. 5-5

5.2.3 Environment Standards ........................................................................................................................ 5-5

5.2.4 Safety Standards ................................................................................................................................... 5-5

5.2.5 EMC Standards .................................................................................................................................... 5-6

5.2.6 Environment Standards ........................................................................................................................ 5-6

6 Acronyms and Abbreviation ............................................................................................... 6-1


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SRAN8.0&GBSS15.0&RAN15.0

SRAN8.0&GBSS15.0&RAN15.0 BSC

Description

1.1 Positioning

This document appli

Based on the BSC69

system architecture.broadband network,

computing.

Figure 1-1 shows th

Figure 1-1 BSC6910

Like the BSC6900, tUMTS, or BSC6910

BSC6910 in indepen

integrated mode. Th

meaning their board

such as co-OAM (O

and Co-Transmissio

and UMTS core netFigure 1-2 shows th

6910 Product

1 Intrs to BSC6910 V100R015.

00, the BSC6910 is a new generation product employi

he BSC6910 can accommodate the growing traffic oprovide diversified services, and support the evolution

BSC6910.

e BSC6910 can be flexibly configured as a BSC6910GU. The BSC6910 GSM and BSC6910 UMTS are re

dent mode, and the BSC6910 GU is referred to as the

BSC6910 GSM and BSC6910 UMTS support the co-

can be installed in one cabinet. The BSC6910 suppor

eration and management), Co-Radio Resource Manag

Resources Management (Co-TRM). The BSC6910 c

orks (CNs) and manages base stations in GSM and Uposition of the BSC6910 in the network.

1 Introduction

duction

ng a cutting-edge

the mobileto cloud

GSM, BSC6910erred to as the

SC6910 in

cabinet solution,

s GU features

ement (Co-RRM),

nnects to GSM

TS networks.


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Description 1 Introduction

Figure 1-2 Position of the BSC6910 in the network

The interfaces between the BSC6910 and each network element (NE) in the UMTS networkare as follows:

Iub: the interface between the BSC6910 and the NodeB

Iur: the interface between the BSC6910 and the RNC

Iur-g: the interface between the BSC6910 and the BSC

Iu-CS: the interface between the BSC6910 and the mobile switching center (MSC) or

media gateway (MGW)

Iu-PC: the interface between the BSC6910 and the serving mobile location center

(SMLC)

Iu-PS: the interface between the BSC6910 and the serving GPRS support node (SGSN)

Iu-BC: the interface between the BSC6910 and the cell broadcast center (CBC)

These interfaces are standard interfaces, through which the BSC6910 can be interconnected

with the equipment from different vendors.

The interfaces between the BSC6910 and each NE in the GSM network are as follows:

Abis: the interface between the BSC6910 and the BTS

A: the interface between the BSC6910 and the MSC or MGW

Gb: the interface between the BSC6910 and the SGSN

Lb: the interface between the BSC6910 and the SMLC

The A and Gb interfaces are standard interfaces, through which the BSC6910 can be

interconnected with the equipment from different vendors.


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Description 1 Introduction

1.2 Benefits

Capable o !volvin" to a #era $et%or& and 'rovidin" $on-bloc&in" (irelessCommunication

The BSC6910 conforms to the trend of higher capacity and fewer sites, saving equipment

room space. In addition, the BSC6910 meets the requirements of rapid service growth andimproves return on equipment investment.

The BSC6910 uses new Platform of Advanced Radio Controller REV:b (PARCb) subracksand supports a processing capability of 10 Gbit/s per slot. The BSC6910 in later versions

supports the evolution to a processing capability of 40 Gbit/s to 100 Gbit/s per slot and to atera network.

The BSC6910 uses a new general processing board. When processing control plane services,the new board outperforms the counterparts in the BSC6900 by 5 times. When processing

user plane services, the new board outperforms the counterparts in the BSC6900 by 2.5 times

and supports a maximum processing capability of 2 Gbit/s.

$ormali)ed *oard+ Minimi)in" t,e $et%or& Construction Costs

The BSC6910 introduces a new Evolved General Processing Unit REV:a (EGPUa), which

incorporates the functions of multiple boards in the BSC6900. The boards include the XPUa,

XPUb, SPUa, SPUb, DPUb, DPUc, DPUd, DPUe, DPUf, and DPUg. When loaded withdifferent software, the EGPUa can be flexibly configured to work in different modes and

process the BSC or RNC control plane and user plane services.

leible $et%or& Capacity !pansion #,rou", /esource 'ool 0esi"n

All the BSC6910 resources are designed in the resource pool mode. The BSC6910 resourcesconsist of control plane resources, user plane resources, and transmission resources. The

control plane and user plane resources can be shared to better adapt to the traffic model

changes.

The BSC6910 supports the plug-and-play and automatic deployment functions. When

hardware resources become insufficient, operators can simply add a board by running therelated commands, insert the physical board into the cabinet, and power on the board. Then,

the BSC6910 will automatically deploy the required software on the board based on thesystem pre-configuration and traffic load. The BSC6910 will also assign control plane or user

plane services to the board to implement load sharing. Operators do not need to manually

perform load sharing.


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Description 2 Architecture

2 Architecture2.1 Overview

The BSC6910 has a modular design and enhances resource utilization and system reliability

by providing a 40 gigabit bandwidth for subrack interconnection and applying distributedresource pools to manage service processing units. The backplane is universal and every slot

is compatible with different types of boards so that various functions can be performed. This

improves the universality and future evolution capability of the hardware platform.

The BSC6910 uses new PARCb subracks. The PARCb subrack can be configured as the MainProcessing Subrack (MPS) or Extended Processing Subrack (EPS).

2.2 Hardware Architecture

2.2.1 Cabinets

The BSC6910 uses the Huawei N68E-22 cabinet and earthquake-proof N68E-21-N cabinet.The design complies with the IEC60297 and IEEE standards. The cabinet configured with the

MPS subrack is called Main Processing Rack (MPR) and the cabinet not configured with the

MPS subrack is called Extended Processing Rack (EPR).

Figure 2-1 shows the front view and rear view of the BSC6910 cabinet.


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Figure 2-1 Front view (left) and rear view (right) of the BSC6910 cabinet

1 Subracks 2 Air defense subrack

2.2.2 Subracks

In compliance with the IEC60297 standard, the BSC6910 subrack has a standard width of 19

inches. The height of each subrack is 12 U. Boards are installed on the front and rear sides of

the backplane, which is positioned in the center of the subrack.

One 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.

Error! Reference source not found. 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 BSC6910 subracks are classified into the MPS and EPS, as described in Table 2-1.

Table 2-1 Classification of the BSC6910 subracks

ubrac& uantity unction

MPS 1 The MPS performs centralized switching andprovides service paths for other subracks. It

also provides the service processing interface,O&M interface, and system clock interface.

EPS 0–5 The EPS performs the functions of user plane

processing and signaling control.

2.2.3 Boards

The BSC6910 boards can be classified into the O&M board, switching processing board,

clock processing board, general processing board, service identification board, and interface

processing board, as described in Table 2-2.

Table 2-2 Classification of the BSC6910 boards

Board Type Board

Name

Full Name Function

General

processingboard

EGPUa Evolved General Processing

Unit REV:a

Manages user plane and

control plane resourcepools.

Processes user plane and

control plane services forthe BSC and RNC.


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Board Type Board

Name

Full Name Function

O&M board EOMUa Evolved Operation and

Maintenance Unit REV:a

Performs configuration

management,

performance

management, faultmanagement, security

management, and loading

management for the

BSC6910.

Works as the O&Mbridge of the

LMT/M2000 to provide

the BSC6910 O&Minterface for the

LMT/M2000 and toenable communication

between the BSC6910

and the LMT/M2000. Works as the interface to

provide the Web-based

online help.

ESAUa Evolved Service Aware

Unit REV:a

Collects data about the

call history record (CHR)

and pre-processes the

collected data.

Filters and summarizes

raw data of the BSC6910as required by the Nastar

and uploads the pre-

processed data to theNastar through the

M2000 for analysis.

Switching

processing

board

SCUb GE Switching network and

Control Unit REV:b

Provides MAC/GE

switching and enables the

convergence of ATM andIP networks. MAC is

short for Media Access

Control and ATM isshort for asynchronous

transfer mode.

Provides data switching

channels. Provides system-level or

subrack-levelconfiguration and

maintenance.

Distributes clock signals

for the BSC6910.


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Board Type Board

Name

Full Name Function

Clock

processing

board

GCUa General Clock Unit REV:a Obtains the system clock

source, performs the

functions of phase-lock and

holdover, and providesclock signals.

Unlike the GCUa board,

the GCGa board canreceive and process GPS

signals.

GCGa General Clock unit withGPS REV:a

Service

identification

board

ENIUa Evolved Network

Intelligence Unit REV:a

Provides the service

identification function and

works with the serviceprocessing boards to

schedule different types ofservices.

Interface

processing

board

EXOUa Evolved 2-port 10GE

Optical interface Unit

REV:a

Provides two channels

over 10 Gbit/s optical

ports.

Supports IP over GE.

FG2c 12-port FE or 4-port

electronic GE interface unit

REV:c

Provides 12 channels

over FE or 4 channels

over GE electrical ports.

Supports IP over FE/GE.

GOUc 4-port packet over GE

Optical interface Unit

REV:c

Provides four channels

over GE optical ports.

Supports IP over GE.AOUc 4-port ATM over

channelized Optical STM-

1/OC-3 interface Unit

REV:c

Provides four channels of

ATM over channelized

optical STM-1/OC-3.

Supports ATM overE1/T1 over

SDH/SONET.

Provides 252 E1s or 336T1s.

Extracts clock signals

and sends the signals to

the GCUa or GCGa

board.


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Board Type Board

Name

Full Name Function

UOIc 8-port ATM over

Unchannelized Optical

STM-1/OC-3 Interface unit

REV:c

Provides eight channels

over unchannelized

STM-1/OC-3c.

Supports ATM overSDH/SONET.


and sends the signals tothe GCUa or GCGa

board.

POUc 4-port IP over channelized

Optical STM-1/OC-3

interface Unit REV:c

Provides four channels of

TDM/IP over

channelized opticalSTM-1/OC-3.

Supports IP over E1/T1

over SDH/SONET.

Supports a load

equivalent to 252 E1s or336 T1s.


and sends the signals tothe GCUa or GCGa

board.

2.3 ot%are Arc,itecture

The BSC6910 inherits the layered software architecture of the BSC6900. By deployingdifferent application software on a unified base platform, the BSC6910 provides different

services. Each layer and each plane are deployed on its lower layer and provide services for

its upper layer and other planes. At the same time, the technical implementation of each layer,

such as algorithms and physical deployment, is isolated from other layers so that each layer

and each plane are dedicated to its own functions and evolve independently. Error!Reference source not found. shows the BSC6910 software architecture.


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SRAN8.0&GBSS15.0&RAN15.0 BSC

Description

Figure 2-3 BSC6910

Error! Reference s

software architectur

Table 2-3 Functions

'lane

Base platform

OM mechanism pl

Application OM

plane

Resource

management plane

Function plane

2.4 /eliability The resource pool ddesign of the BSC69

6910 Product

software architecture

urce not found. describes the functions of each plane

.

f each plane in the BSC6910 software architecture

unction

Provides the operating system (OS) and basic fu

cross-process communication, message manage

backup, and software management.

ne Provides O&M functions for the system, and pro

communication with the network management s

through the southbound interface.

Provides configuration management, maintenanc

performance management, alarm management, a

management for the system.

Manages user plane, control plane, and transport

Processes GSM and UMTS call services accordi

specifications.

sign and redundancy mechanism are widely used in th10. The techniques of detecting and isolating the faults

2 Architecture

in the BSC6910

ctions, such as

ent, redundant

vides

stem (NMS)

e management,

nd log

plane resources.

g to 3GPP

e system reliabilityin the boards and


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in the system are optimized and the software fault tolerance capability is improved to enhancesystem reliability.

2.4.1 ystem /eliability

The BSC6910 system reliability is ensured by the following features:

High-reliability architecture design

Port trunking technology is employed on the active and standby switching boards. The

ports in a port trunking group work in load sharing mode. When a link between theSCUb boards in different subracks is faulty, the system transfers the services carried on

the faulty link to other links and isolates the faulty link. In addition, the SCUb boards indifferent subracks are cross-connected, preventing a port failure on the SCUb board in

one subrack from affecting the SCUb boards in another subrack. This improves the

reliability of intra-controller communication.

Dual clock planes are used in the clock transmission between the GCUa/GCGa boardand the SCUb board. Therefore, a single failure does not affect the normal operation of

the system clock.

Resource pool design

The system implements load sharing on the control plane and on the user plane byemploying a full resource pool design. This effectively prevents suspension of service in

case of overload, improving resource utilization and system reliability.

Active/standby switchover

All BSC6910 hardware supports active/standby switchover. Quick switchover betweenactive and standby parts improves system reliability. In addition, quick fault detection

and recovery minimizes the impact of faults on services.

Flow control

The system performs flow control based on the central processing unit (CPU) and

memory usage. Therefore, the BSC6910 can continue working by regulating the itemspertaining to performance monitoring, resource auditing, and resource scheduling in the

case of CPU overload and resource insufficiency. In this way, the system reliability isenhanced.

2.4.2 ard%are /eliability

The BSC6910 hardware reliability is ensured by the following features:

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

CPUs form a cluster processing system. The communication channels between CPUs are

based on the redundancy design or anti-suspension/breakdown design.

The system uses the redundancy design, as described in Error! Reference source not

found., to support the hot swap of boards and backup of boards and ports. Therefore, the

system has a strong fault tolerance capability.

Table 2-4 Board redundancy

Board Redundancy Mode

EGPUa Board resource pool

EXOUa Board redundancy + board resource pool + 10 Gbit/s GE port

redundancy or load sharing


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Board Redundancy Mode

EOMUa Board redundancy

ESAUa Independently configured

FG2c Board redundancy + board resource pool + GE/FE portredundancy or load sharing

GOUc Board redundancy + board resource pool + GE port redundancy

or load sharing

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

redundancy

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

redundancy

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

redundancy

GCUa/GCGa Board redundancy

SCUb Board redundancy + port trunking on GE ports

ENIUa Board resource pool

An isolation mechanism is used. When entity A fails to accomplish a task, entity B that

has functions identical to entity A takes over the task. Meanwhile, entity A is isolateduntil it is restored.

When a board with a single function is faulty, you can restart the board.

All boards support dual-BIOS. BIOS is short for basic input/output system. Faults in one

BIOS do not affect the startup or operation of the boards.

The system uses the nonvolatile memory to store important data.

With advanced integrated circuits, the system features high integration, sophisticatedtechnology, and high reliability.

All the parts of the system have high quality and pass the aging test. The hardware

assembly process is strictly controlled. These methods ensure high stability and

reliability for long-term operation.

2.4.3 ot%are /eliability

The BSC6910 software reliability is ensured by the following features:

Scheduled check on crucial resources

The software check mechanism checks various software resources in the system. Ifresources are out of service because of software faults, this mechanism can releaseabnormal 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 taskrunning status and reports errors to the O&M system.

Data check


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The software integrity check and digital signature technique are used to prevent thesoftware from being tampered with during the transmission and storage.

The software performs scheduled or event-driven data consistency checks, restores data

selectively or preferably, and generates logs and alarms.

Data backup

Both the data in the OMU database and the data of other boards can be backed up to

ensure data reliability and consistency.

Operation log storage

The system automatically records historical operations into logs. The operation logs help

in locating and rectifying the faults caused by misoperations.


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Description 3 Configurations

3 Configurations3.1 Overview

The BSC6910 GSM and BSC6910 UMTS are referred to as the BSC6910 in independent

mode, and the BSC6910 GU is referred to as the BSC6910 in integrated mode. The BSC6910GU incorporates the functions of the BSC6910 GSM and BSC6910 UMTS through unified

software management and shared EOMU and GCU/GCG. In the BSC6910 GU, GSM service

boards and UMTS service boards are configured in separate subracks.

In the BSC6910, the MPS or EPS can be configured with either GSM or UMTS serviceprocessing boards.

The BSC6910 GU supports a maximum of two cabinets that have six subracks installed. Ofthe subracks, a maximum of three are GSM subracks. The BSC6910 UMTS also supports a

maximum of two cabinets that have six subracks installed. The BSC6910 GSM supports a

maximum of one cabinet that has three subracks installed.

When the BSC6910 V100R015 is configured as the BSC6910 GSM or BSC6910 GU, it doesnot support A over TDM transport or the TC subrack.

The BSC6910 cannot be upgraded from the BSC6900.

Figure 3-1 shows an example of the configurations of the BSC6910 UMTS, BSC6910 GSM,

and BSC6910 GU.

Figure 3-1 Example of the configurations of the BSC6910 UMTS, BSC6910 GSM, andBSC6910 GU


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3.2 Capacity Coni"uration o t,e *C61 M Table 3-1 provides the capacity of a BSC6910 GSM in Abis over TDM and A over IP modes.

Table 3-1 Capacity of a BSC6910 GSM in Abis over TDM and A over IP modes

#ypical

Coni"uration

peciications

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

Maximum number of cabinets 1 1 1

Maximum number of TRXs 4000 7000 10,000

Maximum number of equivalent BHCA

(k)8667 15,167 21,667

Maximum traffic volume (Erlang) 25,000 43,750 62,500

Maximum number of active PDCHs

(MCS-9)16,000 28,000 40,000

Table 3-2 provides the capacity of a BSC6910 GSM in all-IP transmission mode.

Table 3-2 Capacity of a BSC6910 GSM in all-IP transmission mode

#ypical Coni"uration

peciications


Maximum number of cabinets 1 1 1

Maximum number of TRXs 7200 15,600 24,000


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#ypical Coni"uration

peciications


Maximum number of equivalent BHCA (k) 15,600 33,800 52,000

Maximum traffic volume (Erlang) 45,000 97,500 150,000

Maximum number of active PDCHs (MCS-

9)28,800 62,400 96,000

3.3 Capacity Coni"uration o t,e *C61 7M#The BSC6910 UMTS supports the flexible configuration of control plane and user plane data

in different scenarios. In each scenario, the capacity configured for the BSC6910 UMTSdepends on actual traffic models.

There are two traffic models for the BSC6910 UMTS:

High-PS traffic model

This model is applicable in scenarios where subscribers use much more data servicesthan voice services. In this model, the average PS throughput per user is high.

Traffic model for mart phones

In this model, control plane signaling is frequently exchanged and user plane data is

transmitted mainly through small packets.

Sections 3.3.1 "Capacity of the BSC6910 UMTS in the High-PS Traffic Model" and 3.3.2

"Capacity of the BSC6910 UMTS in the Traffic Model for Smart Phones" describe thecapacity of a BSC6910 UMTS in typical configurations in the high-PS traffic model and

traffic model for smart phones, respectively.

3.3.1 Capacity o t,e *C61 7M# in t,e i",-' #raicModel

Table 3-3 describes the high-PS traffic model for the BSC6910 UMTS.

Table 3-3 High-PS traffic model for the BSC6910 UMTS (per user in busy hours)

Item peciication 0escription

CS voice traffic

volume3 mE AMR speech service, 0.144 BHCA

CS data traffic

volume0.2 mE UL 64 kbit/s/DL 64 kbit/s, 0.01 BHCA

PS throughput 43,500 bit/s UL 64 kbit/s/DL 384 kbit/s, 3 BHCA

Proportion of soft

handovers

30% Proportion of calls using two channels

simultaneously to all calls

Number of

handovers per CScall

8 Average number of handovers per CS call


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Number of

handovers per PS

call

5 Average number of handovers per PS call

Number of NASprocedures

3.6 Number of NAS procedures between the CNand the UE, including the location area update,

IMSI attach/detach, routing area update, GPRSattach/detach, and SMS

Table 3-4 provides the capacity of the BSC6910 UMTS in typical configurations (one cabinetthat has three subracks installed). In this table, the BSC6910 UMTS uses the high-PS traffic

model.

Table 3-4 Capacity of the BSC6910 UMTS in typical configurations (one cabinet that has threesubracks installed)

$umber o7sersupported

C 8oiceerviceCapacity9!rlan":

' erviceCapacity 9Iub7;


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Number of

handovers per PS

call

0.7426 Average number of handovers per PS call

Number of NASprocedures

2.0344 Number of NAS procedures between the CNand the UE, including the location area update,

IMSI attach/detach, routing area update, GPRSattach/detach, and SMS

Table 3-6 provides the capacity of the BSC6910 UMTS in typical configurations (one cabinetthat has three subracks installed). In this table, the BSC6910 UMTS uses the traffic model for

smart phones.

Table 3-6 Capacity of the BSC6910 UMTS in typical configurations (one cabinet that has threesubracks installed)

$umber o7sersupported

C 8oiceerviceCapacity9!rlan":

' erviceCapacity 9Iub7;


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#ypical

Coni"uration

peciications

1 M'9M:


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Description 4 Operation and Maintenance

4 Operation and Maintenance4.1 Overview

The BSC6910 provides convenient local maintenance and remote maintenance and supports

multiple flexible O&M modes.The BSC6910 provides hardware-independent O&M functions such as security management,fault management, alarm management, equipment management, and software management.

Users can use man-machine language (MML) commands to perform O&M and configuration

functions and use the graphical user interface (GUI) to perform O&M functions. This meets

the operational requirements from different users.

Users can use man-machine language (MML) commands to perform O&M and configuration

functions and use the graphical user interface (GUI) to perform O&M functions. This meets

the operational requirements from different users.

Error! Reference source not found. shows the O&M network of the BSC6910.


25/36




Figure 4-1 O&M network of the BSC6910

The O&M system of the BSC6910 uses the browser/server (B/S) separated mode. The

EOMUa board of the BSC6910 works as the server, and the LMT is used for localmaintenance. The iManager M2000 is the centralized O&M 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

(eb-based ;M# Improvin" 7ser !perience

Besides the operations support system (OSS), the BSC6910 can also be operated using the

web-based LMT. You can connect the LMT to the BSC6910 to perform O&M operations for

the BSC6910 and to obtain the online help of the LMT. All the operation results are displayed

on the LMT through the web browser.

The web-based LMT does not require software installation and software upgrade, simplifying

user operations and improving user experience.

0iversiied O>M Modes

The BSC6910 provides local maintenance and remote maintenance and supports multiple

O&M modes to meet the needs in various O&M scenarios.

The LMT for local maintenance can access the BSC6910 in the following ways:


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Through the port on the panel of the EOMUa board

Through the virtual local area network (VLAN)

Through the Intranet and Internet

The iManager M2000 for remote maintenance can access the BSC6910 in the following

ways:

Through the VLAN

Through the Intranet and Internet

'o%erul ard%are Mana"ement unctions or uic&ly ;ocatin" and /ectiyin"ard%are aults

The BSC6910 provides a prewarning mechanism for hardware faults, ensuring that sufficient

time is available to rectify the faults before services are interrupted.

The BSC6910 provides functions such as status query, data configuration, and status

management of internal devices.

When a hardware fault occurs, the BSC6910 alerts the user by generating alarms and flashingindicators and provides suggestions to guide the user in troubleshooting. The alarm is cleared

upon the rectification of the fault.

The BSC6910 provides the functions of isolating a faulty component, such as activating ordeactivating the faulty component. When a faulty component needs to be replaced, the hot

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

rectification.

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

Advanced ot%are Mana"ement unctions or ecure and moot, 7p"rades

The BSC6910 provides a remote upgrade tool, which enables the operator to upgrade the

software at the O&M center without interrupting ongoing services. The remote upgrade toolprovides the function of backing up crucial data in the system. When the upgrade fails,

version rollback can be performed immediately and the system returns to normal in a short

period.

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

correctness.

/ic, #racin" and 0etection Mec,anisms or /eliably Monitorin" t,e $et%or&tatus

The BSC6910 provides the tracing and detection functions on multiple layers and multiple

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

interface tracing, message tracing, fault detection at the physical layer, and fault detection atthe data link layer.

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

functions of the LMT.


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!asy !?uipment Installation and Commissionin"+ and !icient $et%or&7p"rade c,eme or uic& $et%or& 0eployment

Before delivery, boards and operating systems are installed in and common data is configured

for the Huawei BSC6910. In addition, the BSC6910 is fully assembled and passes rigid tests.

You only need to install the cabinet and cables onsite. After the hardware installation iscomplete, you can load software and data files to commission the software and hardware.

The BSC6910 can be configured as one of the three variants through board adjustments andsoftware upgrades, facilitating the smooth evolution from GSM to GSM+UMTS and between

GSM+UMTS and UMTS. In addition, the BSC6910 provides the 2G/3G convergence

solution and protects the operator's investment.

/obust ecurity Operation Mec,anism 'reventin" Misoperations

The BSC6910 provides a man-machine interface and prompts users to confirm an important

operation. This ensures that an operation is performed only when it is required and prevents

service interruptions caused by misoperations.


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Description 5 Technical Specifications

5 Technical Specifications5.1 #ec,nical peciications

5.1.1 Capacity peciications

*C61 in

Independent orInte"rated Mode

Item Specification

BSC6910 UMTS BHCA (k) 64,000

BHCA (k) (Include SMS) 70,000

Traffic volume (Erlang) 250K

PS (UL+DL) data throughput

(Mbit/s)

120,000

Number of NodeBs 10,000

Number of cells 20,000

BSC6910 GU (UMTS

capacity)

BHCA (k) 53,300

BHCA (k) (Include SMS) 58,300

Traffic volume (Erlang) 208,000

PS (UL+DL) data throughput

(Mbit/s)100,000

Number of NodeBs 10,000

Number of cells 20,000

BSC6910 GSM

/BSC6910 GU (GSM

capacity)

Maximum number of equivalent

BHCA (k)

52,000

Traffic volume (Erlang) 150,000

Number of TRXs 24,000

Number of configured PDCHs 180,000

Number of active PDCHs

(MCS-9)

96,000


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*C61 inIndependent orInte"rated Mode

Item Specification

Gb interface throughput (Mbit/s) 8000

1. This table provides the maximum capacity specifications of the BSC6910 UMTS and BSC6910 GUin a configuration of two cabinets that have six subracks installed.

2. The items BHCA (k), BHCA (k) (Include SMS), traffic volume (Erlang), PS (UL+DL) datathroughput (Mbit/s), number of NodeBs, and number of cells for the BSC6910 UMTS and theBSC6910 GU cannot reach the maximum value at the same time.

3. The actual capacity depends on the traffic model of the live network. If the traffic model of the livenetwork differs from the Huawei traffic model, the BSC6910 may provide a capacity different fromwhat described in this table.

5.1.2 tructural peciications

Item peciication

Cabinet standardThe structural design conforms to the IEC60297 and IEEE

standards.

Dimensions (H x W xD)

N68E-22 cabinet: 2200 mm x 600 mm x 800 mm

N68E-21-N cabinet: 2130 mm x 600 mm x 800 mm

Height of the available

space

N68E-22 cabinet: 46 U

N68E-21-N cabinet: 44 U

Cabinet weightN68E-22 cabinet: ≤400 kg

N68E-21-N cabinet: ≤ 430 kg

Load-bearing capacity

of the floor in the

equipment room≥ 450 kg/m

2

5.1.3 Cloc& peciications

Item peciication

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

offset2 x 10

-8 /day

Initial maximum

frequency offset1 x 10

-8


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5.1.4 !lectrical peciications

Item peciication

Power input –48 V DC. Each subrack is configured with four 100 A

power inputs (two active and two standby).

Power range –40 V to –57 V

Power consumption of a single

subrack≤ 4000W

Power consumption of a single

cabinet

The cabinet power consumption equals the sum of

power consumption of all subracks in the cabinet. The

power consumption of a typically configured cabinet

should be equal to or less than 7100 W to reduce theimpact of cabinet heat dissipation on the equipment

room.

5.1.5 pace peciications

Figure 5-1 Space requirements for the equipment room

If cables are routed overhead, the distance between the cabinet top and the ceiling of the

equipment room must be greater than or equal to 1000 mm.

If cables are routed under the floor, the height of the ESD floor must be greater than orequal to 200 mm.

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

wider than that shown in Figure 5-1.


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The BSC6910 does not support installation against a wall, because the PARCb subrackneeds to be installed from the front and rear sides and cables for the boards installed in

the rear side are routed from the rear of the BSC6910 cabinet.

5.1.6 !nvironmental peciications

Item peciication

tora"e!nvironment

#ransportation!nvironment

Operatin" !nvironment

Temperature

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

Short-term: –5°C to +55°C

Humidity

range

10% RH to 100%

RH5% RH to 100% RH Long-term: 5% RH to 85%

RH

Short-term: 5% RH to 95%

RH

The short-term operation refers to the operation with the duration not more than 96 hours at a time andwith the accumulative duration not more than 15 days a year.

5.1.@ #ransmission 'orts

#ransmission #ype Connector

FE RJ45

GE RJ45

LC/PC

10 GE LC/PC

Channelized STM-1/OC-3 LC/PC

Unchannelized STM-1/OC-3 LC/PC

5.1. /eliability peciications

Item peciication

System availability > 99.999%

Mean time between failures (MTBF) ≥ 525,000 hours

Mean time to repair (MTTR) ≤ 1 hour


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5.2 Compliance tandards

5.2.1 'o%er upply tandard

Item Standard

Power supply ETS300 132-2

5.2.2 roundin" tandard

Item tandard

Grounding ETS300 253

5.2.3 !nvironment tandards

Item tandard

Noise ETS300 753

GR-63-CORE

5.2.4 aety tandards

Item tandard

Earthquake-proofing ETS300 019-2-4-AMD

GR-63-CORE

YDN5083

Safety IEC60950, EN60950, UL60950

IEC60825-1

IEC60825-2

IEC60825-6

GB4943GR-1089-CORE

Surge protection IEC 61024-1 (1993)

IEC 61312-1 (1995)

IEC 61000-4-5 (1995)


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Item tandard

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 !MC tandards

Item tandard

Electromagnetic

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

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 !nvironment tandards

Item tandard Class

Storage environment ETS300 019-1-1 CLASS 1.2

Transportation

environmentETS300 019-1-2 CLASS 2.3

Operating environment ETS300 019-1-3 CLASS 3.1


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Description 6 Acronyms and Abbreviation

6 Acronyms and Abbreviation 3GPP Third Generation Partnership Project

AMR Adaptive Multirate

ATM Asynchronous Transfer Mode

BHCA Busy Hour Call Attempt

BIOS Basic Input/Output System

BM/TC Basic Module/Transcoder

BSC Base Station Controller

BTS Base Transceiver Station

CBC Cell Broadcast Center

CHR Call History Record

CN Core Network

Co-RRM Co-Radio Resource Management

CPU Central Processing Unit

CS Circuit Service

DSP Digital Signal Processor

EPR Extended Processing Rack

EPS Extended Processing Subrack

FE Fast Ethernet


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GE Gigabit Ethernet

GSM Global System for Mobile communications

GUI Graphic User Interface

IP Internet Protocol

LMT Local Maintenance Terminal

LTE Long Term Evolution

MAC Media Access Control

MGW Media Gateway

MME Mobile Management Entity

MML Man Machine Language

MPR Main Processing Rack

MPS Main Processing Subrack

MSC Mobile Switching Center

MSP Multiplex Section Protection

MTBF Mean Time Between Failures

MTTR Mean time to repair

NAS Non-Access Stratum

OM Operation & Maintenance

OS Operating System

PDCH Packet Data Channel

PPP Point-to-Point Protocol

PS Packet Switched

RNC Radio Network Controller

RRM Radio Resource Management

SDH Synchronous Digital Hierarchy


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SGSN Serving GPRS Support Node

STCP Service Transport Control Plane

STM-1 Synchronous Transport Module level 1

SMLC Serving Mobile Location Center

SMP System Management Plane

TCH Traffic Channel

TCR TransCoder Rack

TCS TransCoder Subrack

TDM Time Division Multiplexing

TRX Transceiver

UE User Equipment

UMTS Universal Mobile Telecommunications

System

VLAN Virtual Local Area Network

Documents

BSC6910 Product Description