BBU Interconnection(SRAN9.0_Draft a)

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  • SingleRAN

    BBU Interconnection FeatureParameter Description

    Issue Draft ADate 2014-01-20

    HUAWEI TECHNOLOGIES CO., LTD.

  • Copyright Huawei Technologies Co., Ltd. 2014. All rights reserved.No part of this document may be reproduced or transmitted in any form or by any means without prior writtenconsent 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. NoticeThe purchased products, services and features are stipulated by the contract made between Huawei and thecustomer. All or part of the products, services and features described in this document may not be within thepurchase 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, guarantees or representationsof 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, andrecommendations in this document do not constitute a warranty of any kind, express or implied. Huawei Technologies Co., Ltd.Address: Huawei Industrial Base

    Bantian, LonggangShenzhen 518129People's Republic of China

    Website: http://www.huawei.comEmail: support@huawei.com

    Issue Draft A (2014-01-20) Huawei Proprietary and ConfidentialCopyright Huawei Technologies Co., Ltd.

    i

  • Contents

    1 About This Document..................................................................................................................11.1 Scope..............................................................................................................................................................................11.2 Intended Audience..........................................................................................................................................................11.3 Change History...............................................................................................................................................................12 Overview.........................................................................................................................................32.1 Introduction....................................................................................................................................................................42.2 Upgrade to Triple-Mode Base Stations..........................................................................................................................42.2.1 BBU Slots....................................................................................................................................................................42.2.2 Cable Connections.......................................................................................................................................................42.2.3 Application Scenarios..................................................................................................................................................52.2.4 Restrictions..................................................................................................................................................................62.2.5 Supported Features and Functions...............................................................................................................................62.3 UMTS Baseband Capacity Expansion...........................................................................................................................72.3.1 Cable Connections.......................................................................................................................................................72.3.2 Application Scenarios..................................................................................................................................................82.3.3 Restrictions..................................................................................................................................................................93 Related Features...........................................................................................................................114 Impact on the Network...............................................................................................................124.1 Impact on System Capacity..........................................................................................................................................124.2 Impact on Network Performance..................................................................................................................................125 Engineering Guidelines.............................................................................................................135.1 When to Use BBU Interconnection..............................................................................................................................135.2 Information to Be Collected.........................................................................................................................................135.3 Network Planning.........................................................................................................................................................135.3.1 Software Versions......................................................................................................................................................135.3.2 Subracks and Hardware Configurations for the BBUs..............................................................................................145.3.3 Transmission Modes..................................................................................................................................................145.3.4 CPRI-based Topologies.............................................................................................................................................175.3.5 Clocks........................................................................................................................................................................215.4 Feature Deployment.....................................................................................................................................................215.4.1 Deployment Requirements........................................................................................................................................21

    SingleRANBBU Interconnection Feature Parameter Description Contents

    Issue Draft A (2014-01-20) Huawei Proprietary and ConfidentialCopyright Huawei Technologies Co., Ltd.

    ii

  • 5.4.2 Data Preparation........................................................................................................................................................215.4.3 Initial Configuration..................................................................................................................................................245.4.4 Activation Observation..............................................................................................................................................255.5 Adjustment Examples...................................................................................................................................................265.5.1 Adjustment from a GU Dual-Mode Base Station to a GU+L Triple-Mode Base Station.........................................265.5.2 UMTS Baseband Capacity Expansion from a GU+L to a GU+UL Triple-Mode Base Station................................305.6 Performance Optimization............................................................................................................................................375.7 Troubleshooting............................................................................................................................................................376 Parameters.....................................................................................................................................397 Counters........................................................................................................................................468 Reference Documents.................................................................................................................47

    SingleRANBBU Interconnection Feature Parameter Description Contents

    Issue Draft A (2014-01-20) Huawei Proprietary and ConfidentialCopyright Huawei Technologies Co., Ltd.

    iii

  • 1 About This Document1.1 Scope

    This document describes the BBU Interconnection feature, including its implementationprinciples, network impact, and engineering guidelines.This document is applicable to the following base stations:l BTS3900(Ver.B), BTS3900(Ver.C) and BTS3900(Ver.D)l BTS3900L(Ver.B), BTS3900L(Ver.C) and BTS3900L(Ver.D)l BTS3900A(Ver.B), BTS3900A(Ver.C), BTS3900A(Ver.D), BTS3900A(Ver.D_A1) and

    BTS3900A(Ver.D_A2)l BTS3900AL(Ver.A)l DBS3900l BTS3900C and BTS3900C(Ver.C)l BTS3012(Ver.D_Z)l BTS3012AE(Ver.D_Z)Any managed objects (MOs), parameters, alarms, or counters described in this documentcorrespond to the software release delivered with this document. In the event of updates, theupdates will be described in the product documentation delivered with the latest software release.

    1.2 Intended AudienceThis document is intended for personnel who:l Personnel who need to understand the features herein.l Personnel who work with Hua