Bts3900 product description-(v300_r008_02)

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Bts3900 product description-(v300_r008_02)

  1. 1. BTS3900V300R008Product DescriptionIssue 02Date 2008-04-30Part NumberHuawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd
  2. 2. Huawei Technologies Co., Ltd. provides customers with comprehensive technical support and service. For anyassistance, please contact our local office or company headquarters.Huawei Technologies Co., Ltd.Address: Huawei Industrial BaseBantian, LonggangShenzhen 518129Peoples Republic of ChinaWebsite: http://www.huawei.comEmail: support@huawei.comCopyright © Huawei Technologies Co., Ltd. 2008. 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 Permissionsand 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.NoticeThe 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 the statements, information, andrecommendations in this document do not constitute a warranty of any kind, express or implied.Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd
  3. 3. ContentsAbout This Document.....................................................................................................................11 System Architecture of the BTS3900......................................................................................1-12 Introduction to the BTS3900.....................................................................................................2-12.1 Overview of the BTS3900...............................................................................................................................2-22.2 Structure of the BTS3900 Cabinet..................................................................................................................2-22.2.1 Structure of the BTS3900 -48 V Cabinet...............................................................................................2-32.2.2 Structure of the BTS3900 +24 V Cabinet..............................................................................................2-42.2.3 Structure of the BTS3900 220 V Cabinet..............................................................................................2-62.3 Logical Structure of the BTS3900..................................................................................................................2-82.4 Software Structure of the BTS........................................................................................................................2-93 Power Distribution Modes of the BTS3900...........................................................................3-14 BTS3900 Monitoring System....................................................................................................4-15 Reference Clocks of the BTS3900/BTS3900A........................................................................5-16 Signal Flow of the BTS3900/BTS3900A.................................................................................6-17 Topologies of the BTS...............................................................................................................7-18 Configuration of the BTS3900/BTS3900A.............................................................................8-18.1 Configuration Principles of the BTS3900/BTS3900A....................................................................................8-28.2 RF Signal Cable Connections of the DRFU....................................................................................................8-68.3 Topology of DRFUs Connected by CPRI Cables.........................................................................................8-128.4 Typical Configuration of the BTS3900/BTS3900A.....................................................................................8-149 OM System of the BTS..............................................................................................................9-19.1 OM Modes of the BTS....................................................................................................................................9-29.2 OM Functions of the BTS...............................................................................................................................9-610 Technical Specifications of the BTS3900...........................................................................10-110.1 Capacity Specifications of the BTS3900/BTS3900A.................................................................................10-210.2 RF Specifications of the BTS3900/BTS3900A..........................................................................................10-210.3 Engineering Specifications of the BTS3900...............................................................................................10-310.4 Surge Protection Specifications of the BTS3900........................................................................................10-410.5 Ports of the BTS3900..................................................................................................................................10-5BTS3900Product Description ContentsIssue 02 (2008-04-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltdi
  4. 4. 10.6 Compliance Standards of the BTS3900/BTS3900A...................................................................................10-810.7 Environmental Requirements of the BTS3900...........................................................................................10-910.7.1 Environment Requirements for Operating the BTS3900.................................................................10-1010.7.2 Environment Requirements for Transporting the BTS3900............................................................10-1210.7.3 Environment Requirements for Storing the BTS3900.....................................................................10-14ContentsBTS3900Product Descriptionii Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., LtdIssue 02 (2008-04-30)
  5. 5. FiguresFigure 1-1 BTS3900 system.................................................................................................................................1-1Figure 2-1 Typical configurations of the BTS3900 -48 V cabinet.......................................................................2-4Figure 2-2 Typical configurations of the BTS3900 +24 V cabinet......................................................................2-5Figure 2-3 Typical configurations of the BTS3900 220 V cabinet......................................................................2-7Figure 2-4 Logical Structure of the BTS3900......................................................................................................2-8Figure 2-5 Software structure of the BTS............................................................................................................2-9Figure 3-1 Power distribution of a single -48 V DC cabinet................................................................................3-1Figure 3-2 Power distribution of two -48 V DC cabinets in stack mode.............................................................3-2Figure 3-3 Power distribution of a single +24 V DC cabinet...............................................................................3-2Figure 3-4 Power distribution when a -48 V DC cabinet is stacked on a +24 V DC cabinet..............................3-3Figure 3-5 Power distribution of a single 220 V AC cabinet...............................................................................3-3Figure 3-6 Power distribution when a -48 V DC cabinet is stacked on a 220 V AC cabinet..............................3-4Figure 4-1 Monitoring ports of the BBU..............................................................................................................4-1Figure 4-2 Components of the monitoring system...............................................................................................4-2Figure 6-1 DL traffic signal flow.........................................................................................................................6-1Figure 6-2 UL traffic signal flow.........................................................................................................................6-2Figure 6-3 Signaling flow.....................................................................................................................................6-3Figure 7-1 Star topology of the BTS....................................................................................................................7-1Figure 7-2 Chain topology of the BTS.................................................................................................................7-1Figure 7-3 Tree topology of the BTS...................................................................................................................7-2Figure 7-4 Ring topology of the BTS...................................................................................................................7-2Figure 7-5 Regroupment for disconnection in the ring topology.........................................................................7-5Figure 8-1 Mapping between the RF signal cables and their colors....................................................................8-6Figure 8-2 Connections of RF cables for S1 (without transmit diversity/with transmit diversity)/S2 (withouttransmit diversity).................................................................................................................................................8-7Figure 8-3 Connections of RF cables for S2 (PBT)/S3 (without transmit diversity)/S4 (without transmit diversity)...............................................................................................................................................................................8-8Figure 8-4 Connections of RF signal cables for S2 (4-way receive diversity)....................................................8-9Figure 8-5 Connections of RF cables for S2 (transmit diversity)/S4 (transmit independency).........................8-10Figure 8-6 Connections of RF cables for S5 (without transmit diversity)/S6 (without transmit diversity).......8-11Figure 8-7 Connections of RF cables for S7 (without transmit diversity)/S8 (without transmit diversity).......8-12Figure 8-8 Typical topology of the DRFUs.......................................................................................................8-13Figure 9-1 Network structure of the OM system.................................................................................................9-2BTS3900Product Description FiguresIssue 02 (2008-04-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltdiii
  6. 6. TablesTable 4-1 Monitoring modules of the BTS3900..................................................................................................4-2Table 4-2 Functions of the BTS3900A Monitoring System.................................................................................4-3Table 7-1 Comparison of network topologies......................................................................................................7-3Table 8-1 RF configuration principles of the BTS3900.......................................................................................8-3Table 8-2 Configuration principles of the boards in the BBU.............................................................................8-5Table 8-3 Configuration (1)..................................................................................................................................8-6Table 8-4 Configuration (2)..................................................................................................................................8-7Table 8-5 Configuration (3)..................................................................................................................................8-9Table 8-6 Configuration (4)................................................................................................................................8-10Table 8-7 Configuration (5)................................................................................................................................8-12Table 8-8 Comparison of the three typical topologies of the DRFUs................................................................8-13Table 8-9 Typical configuration of the BTS3900/BTS3900A...........................................................................8-14Table 9-1 Functions of the BTS OM system........................................................................................................9-3Table 10-1 Operating frequency bands of the BTS3900/BTS3900A.................................................................10-2Table 10-2 Output power of the DRFU in the BTS3900/BTS3900A................................................................10-2Table 10-3 Receiver sensitivity of the BTS3900/BTS3900A............................................................................10-3Table 10-4 Dimensions.......................................................................................................................................10-3Table 10-5 Weight of the cabinet.......................................................................................................................10-4Table 10-6 Specifications of the input power.....................................................................................................10-4Table 10-7 Power consumption of the BTS3900 (S4/4/4).................................................................................10-4Table 10-8 Surge protection specifications of the BTS3900..............................................................................10-5Table 10-9 Power ports of the BTS3900............................................................................................................10-5Table 10-10 BBU transmission ports.................................................................................................................10-6Table 10-11 DRFU transmission ports...............................................................................................................10-6Table 10-12 BTS3900 alarm ports.....................................................................................................................10-7Table 10-13 Other external ports of the BBU3900............................................................................................10-7Table 10-14 Climatic requirements..................................................................................................................10-10Table 10-15 Requirements for the density of chemically active substances....................................................10-11Table 10-16 Mechanical stress requirements...................................................................................................10-11Table 10-17 Climatic requirements..................................................................................................................10-12Table 10-18 Requirements for the density of mechanically active substances................................................10-13Table 10-19 Requirements for the density of chemically active substances....................................................10-13Table 10-20 Mechanical stress requirements...................................................................................................10-14BTS3900Product Description TablesIssue 02 (2008-04-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltdv
  7. 7. Table 10-21 Climatic requirements..................................................................................................................10-14Table 10-22 Requirements for the density of mechanically active substances................................................10-15Table 10-23 Requirements for the density of chemically active substances....................................................10-16Table 10-24 Mechanical stress requirements...................................................................................................10-16TablesBTS3900Product Descriptionvi Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., LtdIssue 02 (2008-04-30)
  8. 8. About This DocumentPurposeThis document provides an overview of the BTS3900. It also describes the system architecture,software and hardware structure, functional subsystems, configuration types, signal flow, clocksynchronization modes, and topologies of the BTS3900. This document also lists thespecifications for the capacity, radio frequency (RF), engineering, surge protection, and portsof the BTS3900.Product VersionThe following table lists the product version related to this document.Product Name Product VersionBTS3900 V300R008Intended AudienceThis document is intended for:l Network plannersl Field engineersl System engineersChange HistoryFor changes in the document, refer to Changes in BTS3900 Product Description.Organization1 System Architecture of the BTS3900The BTS3900 consists of the BBU3900, the DRFUs, and the indoor macro cabinet. TheBBU3900 and the DRFUs are installed in the indoor macro cabinet.2 Introduction to the BTS3900This provides an overview of the BTS3900, and describes the physical structure, logicalstructure, and software structure of the BTS3900.BTS3900Product Description About This DocumentIssue 02 (2008-04-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd1
  9. 9. 3 Power Distribution Modes of the BTS3900The BTS3900 cabinet can use three types of power inputs, namely, -48 V DC, +24 V DC, and220 V AC.4 BTS3900 Monitoring SystemThe BTS3900 monitoring system enables the power monitoring, fan monitoring, andenvironment monitoring.5 Reference Clocks of the BTS3900/BTS3900AThe BTS3900/BTS3900A supports three types of reference clocks: line clock, BITS clock, andfree-run clock.6 Signal Flow of the BTS3900/BTS3900AThe signal flow of the BTS3900/BTS3900A consists of the traffic signal flow and the signalingflow of the BTS. The BTS3900/BTS3900A signal flow is classified into the DL traffic signalflow, UL traffic signal flow, and signaling flow.7 Topologies of the BTSThe topologies of the BTS are classified into star, chain, tree, and ring topologies. The BBU andDRFUs support multiple network topologies such as star, chain, and ring topologies. In practice,these topologies can be combined. Optimum utilization of the topologies can improve the qualityof service and save the investment on the transmission equipment.8 Configuration of the BTS3900/BTS3900AThis describes the configuration principles and typical configurations of the BTS3900/BTS3900A.9 OM System of the BTSThe OM system implements the management, monitoring, and maintenance tasks of theBTS3900. It provides various OM modes and multiple maintenance platforms to meet differentmaintenance requirements.10 Technical Specifications of the BTS3900This describes the BTS3900 technical specifications, which consist of capacity specifications,RF specifications, engineering specifications, lightning protection specifications, and otherspecifications related to physical ports and environment.Conventions1. Symbol ConventionsThe following symbols may be found in this document. They are defined as followsSymbol DescriptionDANGERIndicates a hazard with a high level of risk that, if not avoided,will result in death or serious injury.About This DocumentBTS3900Product Description2 Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., LtdIssue 02 (2008-04-30)
  10. 10. Symbol DescriptionWARNINGIndicates a hazard with a medium or low level of risk which, ifnot avoided, could result in minor or moderate injury.CAUTIONIndicates a potentially hazardous situation that, if not avoided,could cause equipment damage, data loss, and performancedegradation, or unexpected results.TIP Indicates a tip that may help you solve a problem or save yourtime.NOTE Provides additional information to emphasize or supplementimportant points of the main text.2. General ConventionsConvention DescriptionTimes New Roman Normal paragraphs are in Times New Roman.Boldface Names of files,directories,folders,and users are in boldface. Forexample,log in as user root .Italic Book titles are in italics.Courier New Terminal display is in Courier New.3. Command ConventionsConvention DescriptionBoldface The keywords of a command line are in boldface.Italic Command arguments are in italic.[ ] Items (keywords or arguments) in square brackets [ ] are optional.{x | y | ...} Alternative items are grouped in braces and separated by verticalbars.One is selected.[ x | y | ... ] Optional alternative items are grouped in square brackets andseparated by vertical bars.One or none is selected.{ x | y | ... } * Alternative items are grouped in braces and separated by verticalbars.A minimum of one or a maximum of all can be selected.[ x | y | ... ] * Alternative items are grouped in braces and separated by verticalbars.A minimum of zero or a maximum of all can be selected.4. GUI ConventionsBTS3900Product Description About This DocumentIssue 02 (2008-04-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd3
  11. 11. Convention DescriptionBoldface Buttons,menus,parameters,tabs,window,and dialog titles are inboldface. For example,click OK.> Multi-level menus are in boldface and separated by the ">" signs.For example,choose File > Create > Folder .5. Keyboard OperationConvention DescriptionKey Press the key.For example,press Enter and press Tab.Key1+Key2 Press the keys concurrently.For example,pressing Ctrl+Alt+Ameans the three keys should be pressed concurrently.Key1,Key2 Press the keys in turn.For example,pressing Alt,A means the twokeys should be pressed in turn.6. Mouse OperationAction DescriptionClick Select and release the primary mouse button without moving thepointer.Double-click Press the primary mouse button twice continuously and quicklywithout moving the pointer.Drag Press and hold the primary mouse button and move the pointerto a certain position.About This DocumentBTS3900Product Description4 Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., LtdIssue 02 (2008-04-30)
  12. 12. 1System Architecture of the BTS3900The BTS3900 consists of the BBU3900, the DRFUs, and the indoor macro cabinet. TheBBU3900 and the DRFUs are installed in the indoor macro cabinet.Figure 1-1 shows the BTS3900 system.Figure 1-1 BTS3900 systemDRFUBTS3900cabinetBBUThe BTS3900 mainly consists of the following components:l The BBU3900 is used for baseband processing and enables interaction between the BTSand the BSC.l The DRFU is a double radio filter unit that processes two carriers. The DRFU performsmodulation and demodulation between baseband signals and RF signals, processes data,and combines and divides signals.BTS3900Product Description 1 System Architecture of the BTS3900Issue 02 (2008-04-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd1-1
  13. 13. l The indoor macro cabinet houses the BBU3900 and DRFUs. In addition, the indoor macrocabinet provides the functions such as power distribution, heat dissipation, and surgeprotection.1 System Architecture of the BTS3900BTS3900Product Description1-2 Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., LtdIssue 02 (2008-04-30)
  14. 14. 2Introduction to the BTS3900About This ChapterThis provides an overview of the BTS3900, and describes the physical structure, logicalstructure, and software structure of the BTS3900.2.1 Overview of the BTS3900The BTS3900 is a fourth generation indoor macro base station developed by Huawei. TheBTS3900 mainly consists of the BBU and the DRFUs. Compared with traditional BTSs, theBTS3900 features simpler structure and higher integration.2.2 Structure of the BTS3900 CabinetThe BTS3900 cabinet supports three types of input power: -48 V DC, +24 V DC, and 220 VAC. The cabinets that support different types of input power are different in structure, mainlyin power distribution unit.2.3 Logical Structure of the BTS3900The BTS3900 mainly consists of the BBU and DRFUs. The logical structure of the BTS3900consists of the RF subsystem, control subsystem, power subsystem, and antenna subsystem.2.4 Software Structure of the BTSThe BTS software consists of the platform software, signaling protocol software, OM software,and data center. The latter three are application software, and the platform software providessupport for the application software.BTS3900Product Description 2 Introduction to the BTS3900Issue 02 (2008-04-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd2-1
  15. 15. 2.1 Overview of the BTS3900The BTS3900 is a fourth generation indoor macro base station developed by Huawei. TheBTS3900 mainly consists of the BBU and the DRFUs. Compared with traditional BTSs, theBTS3900 features simpler structure and higher integration.The BTS3900 has the following features:l It is developed on the basis of the unified BTS platform for Huawei wireless products andenables the smooth evolution from 2G to 3G.l It supports the Abis IP/FE interface in hardware and enables Abis over IP through softwareupgrade if required.l It shares the BBU, which is the central processing unit, with the DBS3900 to minimize thenumber of spare parts and reduce the cost.l It can be flexibly installed in a small footprint and can be easily maintained with low cost.l It supports multiple frequency bands, such as PGSM900, EGSM900, and DCS1800.l It supports transmit diversity and PBT.l It supports two-antenna and four-antenna receive diversity to improve the uplink coverage.l It supports the GPRS and the EGPRS.l It supports omnidirectional cells and directional cells.l It supports the hierarchical cell, concentric cell, and micro cell.l It supports multiple network topologies, such as star, tree, chain, ring, and hybridtopologies.l It supports the A5/3, A5/2, and A5/1 encryption and decryption algorithms.l It supports the cell broadcast SMS and point-to-point SMS.l It supports coexistence with the BTS3X, BTS3012, and DBS3900.l A single cabinet supports up to 12 TRXs in the maximum cell configuration of S4/4/4.l Multiple cabinets support up to 72 TRXs in the maximum cell configuration of S24/24/24.2.2 Structure of the BTS3900 CabinetThe BTS3900 cabinet supports three types of input power: -48 V DC, +24 V DC, and 220 VAC. The cabinets that support different types of input power are different in structure, mainlyin power distribution unit.2.2.1 Structure of the BTS3900 -48 V CabinetThe BTS3900 -48 V cabinet uses the external -48 V DC input. The external -48 V DC power isdirectly led into the DCDU-01, which supplies the -48 V DC power to each component in thecabinet. The BTS3900 -48 V cabinet can be installed alone or stacked with another BTS3900-48 V cabinet.2.2.2 Structure of the BTS3900 +24 V CabinetThe BTS3900 +24 V cabinet uses the external +24 V DC input. The external input power isconverted into -48 V DC through the PSU, and then distributed to the internal components ofthe cabinet through the DCDU-01. The BTS3900 +24 V cabinet can be installed alone or stackedwith a BTS3900 -48 V cabinet.2 Introduction to the BTS3900BTS3900Product Description2-2 Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., LtdIssue 02 (2008-04-30)
  16. 16. 2.2.3 Structure of the BTS3900 220 V CabinetThe BTS3900 220 V cabinet uses the external 220 V AC input power. The external input poweris converted into -48 V DC through the PSU, and then distributed to the internal components ofthe cabinet through the DCDU-01. The BTS3900 220 V cabinet can be installed alone or stackedwith a BTS3900 -48 V cabinet.2.2.1 Structure of the BTS3900 -48 V CabinetThe BTS3900 -48 V cabinet uses the external -48 V DC input. The external -48 V DC power isdirectly led into the DCDU-01, which supplies the -48 V DC power to each component in thecabinet. The BTS3900 -48 V cabinet can be installed alone or stacked with another BTS3900-48 V cabinet.The BTS3900 -48 V cabinet consists of the DRFU, BBU, GATM, DCDU-01, and FAN unit.Figure 2-1 shows the typical configurations of a single cabinet and two stacked cabinets.BTS3900Product Description 2 Introduction to the BTS3900Issue 02 (2008-04-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd2-3
  17. 17. Figure 2-1 Typical configurations of the BTS3900 -48 V cabinetOne cabinet Two cabinets in stack mode(1) DRFU (2) FAN unit(3) GATM (4) BBU(5) DCDU-01 -NOTEWhen two BTS3900 -48 V cabinets are stacked, the BBU is installed only in the lower cabinet and servesas the baseband control unit for the two cabinets.2.2.2 Structure of the BTS3900 +24 V CabinetThe BTS3900 +24 V cabinet uses the external +24 V DC input. The external input power isconverted into -48 V DC through the PSU, and then distributed to the internal components of2 Introduction to the BTS3900BTS3900Product Description2-4 Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., LtdIssue 02 (2008-04-30)
  18. 18. the cabinet through the DCDU-01. The BTS3900 +24 V cabinet can be installed alone or stackedwith a BTS3900 -48 V cabinet.The BTS3900 +24 V cabinet consists of the DRFU, BBU, DCDU-01, PSU (DC/DC), and FANunit. Figure 2-2 shows the typical configurations of a single cabinet and two stacked cabinets.Figure 2-2 Typical configurations of the BTS3900 +24 V cabinetOne cabinet Two cabinets in stack mode(1) DRFU (2) FAN unit (3) BBU(4) DCDU-01 (5) Wiring unit (6) PSU (DC/DC)BTS3900Product Description 2 Introduction to the BTS3900Issue 02 (2008-04-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd2-5
  19. 19. NOTEl When the two cabinets are stacked, the BTS3900 -48 V cabinet should be stacked on the +24 V cabinet.l When the BTS3900 +24 V cabinet and the BTS3900 -48 V cabinet are stacked, a maximum of nineDRFUs can be configured.l When two cabinets are stacked, the BBU is installed only in the lower cabinet and serves as the basebandcontrol unit for the two cabinets.2.2.3 Structure of the BTS3900 220 V CabinetThe BTS3900 220 V cabinet uses the external 220 V AC input power. The external input poweris converted into -48 V DC through the PSU, and then distributed to the internal components ofthe cabinet through the DCDU-01. The BTS3900 220 V cabinet can be installed alone or stackedwith a BTS3900 -48 V cabinet.The BTS3900 220 V cabinet consists of the DRFU, BBU, DCDU-01, PMU, PSU (AC/DC), andFAN unit. Figure 2-3 shows the typical configurations of a single cabinet and two stackedcabinets.2 Introduction to the BTS3900BTS3900Product Description2-6 Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., LtdIssue 02 (2008-04-30)
  20. 20. Figure 2-3 Typical configurations of the BTS3900 220 V cabinetOne cabinet Two cabinets in stack mode(1) DRFU (2) FAN unit (3) BBU(3) DCDU-01 (5) PSU (AC/DC) (6) PMU(7) Wiring unit - -BTS3900Product Description 2 Introduction to the BTS3900Issue 02 (2008-04-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd2-7
  21. 21. NOTEl When the two cabinets are stacked, the BTS3900 -48 V cabinet should be stacked on the 220 V cabinet.l When the BTS3900 220 V cabinet and the BTS3900 -48 V cabinet are stacked, a maximum of nineDRFUs can be configured.l When two cabinets are stacked, the BBU is installed only in the lower cabinet and serves as the basebandcontrol unit for the two cabinets.2.3 Logical Structure of the BTS3900The BTS3900 mainly consists of the BBU and DRFUs. The logical structure of the BTS3900consists of the RF subsystem, control subsystem, power subsystem, and antenna subsystem.Figure 2-4 shows the logical structure of the BTS3900.Figure 2-4 Logical Structure of the BTS3900Antenna subsystemControlsubsystemGATMPower subrack(AC/DC)Power subrack(DC/DC)DCDU-01-48 V DC -48 V DCPower subsystem+24 V DC 220 V ACCPRIRFsignalsRFsignalsCPRITMATMAMSRF subsystem…DRFUDRFUOpticaltransmissiondeviceBSCE1BBUE1…-48 V DCBias-TeeBias-TeeNOTEl In Figure 2-4, the power subrack (DC/DC) is configured in only the +24 V DC cabinet; the powersubrack (AC/DC) is configured in only the 220 V AC cabinet.l If the TMA is configured, the GATM and the Bias-Tee must be configured.The logical subsystems of the BTS3900 are as follows:l RF subsystem whose functions are implemented by the DRFUl Control subsystem whose functions are implemented by the BBUl Power subsystem whose functions are implemented by the following modules:2 Introduction to the BTS3900BTS3900Product Description2-8 Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., LtdIssue 02 (2008-04-30)
  22. 22. – DCDU-01 in the BTS3900 cabinet (-48 V DC)– DCDU-01 and Power Subrack (DC/DC) in the BTS3900 cabinet (+24 V DC)– DCDU-01 and Power Subrack (AC/DC) in the BTS3900 cabinet (220 V AC)l Antenna subsystem whose functions are implemented by the following modules:– GATM– TMA– Antenna2.4 Software Structure of the BTSThe BTS software consists of the platform software, signaling protocol software, OM software,and data center. The latter three are application software, and the platform software providessupport for the application software.Figure 2-5 shows the software structure of the BTS.Figure 2-5 Software structure of the BTSData centerSignalingprotocol softwareOM softwarePlatform softwarePlatform SoftwareThe platform software provides support for the signaling protocol software, OM software, anddata center. The functions of the platform software are as follows:l Timing Managementl Task Managementl Memory Managementl Module Managementl Managing the loading and running of the application softwarel Providing the message forwarding mechanism between modulesl Tracing massages between modules to facilitate troubleshootingSignaling Protocol SoftwareThe functions of the signaling protocol software are as follows:BTS3900Product Description 2 Introduction to the BTS3900Issue 02 (2008-04-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd2-9
  23. 23. l Processing the radio network layer protocol.l Processing the transport network layer protocol. The transport network layer protocolperforms transport data configuration, ALCAP processing, and SAAL processing.l Managing the internal logical resources (such as cells and channels) of the BTS and themapping between physical resources and logical resources.OM SoftwareThe OM software works together with the maintenance terminals such as the LMT to maintainthe BTS. The functions of the OM software are as follows:l Equipment Managementl Data Configurationl Performance Managementl Commissioning Managementl Alarm Managementl Software Managementl Tracing Managementl Security Managementl Backup Managementl Log ManagementData CenterThe data center stores the configuration data of each module.2 Introduction to the BTS3900BTS3900Product Description2-10 Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., LtdIssue 02 (2008-04-30)
  24. 24. 3Power Distribution Modes of the BTS3900The BTS3900 cabinet can use three types of power inputs, namely, -48 V DC, +24 V DC, and220 V AC.-48 V DC DistributionFigure 3-1 shows the power distribution of a single -48 V DC cabinet.Figure 3-1 Power distribution of a single -48 V DC cabinetPower subsystem of a-48 V DC cabinet-48 V DC DCDU-01DRFU0-5FANBBUGATMReservedIf the external -48 V DC input is used, no additional power system is required. The external -48V DC input is directly connected to the power input terminals on the DCDU-01. Then, theDCDU-01 distributes the -48 V DC to boards and modules in the cabinet.Figure 3-2 shows the power distribution of two -48 V DC cabinets in stack mode.BTS3900Product Description 3 Power Distribution Modes of the BTS3900Issue 02 (2008-04-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd3-1
  25. 25. Figure 3-2 Power distribution of two -48 V DC cabinets in stack modePower subsystem ofstacked cabinets-48 V DCDRFU6-11FANGATMDCDU-01-48 V DCDRFU0-5FANBBUGATMReserved-48 V DCcabinet-48 V DCcabinetDCDU-01When two -48 V DC cabinets are stacked, the external -48 V DC input is directly connected tothe power input terminals on the DCDUs-01 in both cabinets. Then, the DCDUs-01 distributethe -48 V DC to the boards and modules in both cabinets.+24 V DC DistributionFigure 3-3 shows the power distribution of a single +24 V DC cabinet.Figure 3-3 Power distribution of a single +24 V DC cabinetPower subsystem of a+24 V DC cabinet+24 V DC -48 V DCDRFU0-5FANBBUGATMDCDU-01Powersubrack(DC/DC)ReservedIf the external +24 V DC input is used, the cabinet is installed with the power subrack (DC/DC).The power subrack (DC/DC) converts the external +24 V DC input into the -48 V DC andsupplies the -48 V DC to the DCDU-01. Then, the DCDU-01 distributes the -48 V DC to boardsand modules in the cabinet.Figure 3-4 shows the power distribution when a -48 V DC cabinet is stacked on a +24 V DCcabinet.3 Power Distribution Modes of the BTS3900BTS3900Product Description3-2 Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., LtdIssue 02 (2008-04-30)
  26. 26. Figure 3-4 Power distribution when a -48 V DC cabinet is stacked on a +24 V DC cabinetPower subsystem ofstacked cabinets+24 V DCDRFU6-8DRFU0-5DCDU-01 FANFANBBUGATMGATMReservedPowersubrack(DC/DC)+24 V DCcabinet-48 V DCcabinetDCDU-01The power subrack (DC/DC) converts the external +24 V DC input into the -48 V DC andsupplies the -48 V DC to the DCDUs-01 in both cabinets. Then, the DCDUs-01 distribute the-48 V DC to boards and modules in the two cabinets.220 V AC DistributionFigure 3-5 shows the power distribution of a single 220 V AC cabinet.Figure 3-5 Power distribution of a single 220 V AC cabinetPower subsystem of a220 V AC cabinet220 V AC -48 V DCDRFU0-5FANBBUGATMDCDU-01Powersubrack(AC/DC)ReservedIf the external 220 V AC input is used, the cabinet is installed with the power subrack (AC/DC).The power subrack (AC/DC) converts the external 220 V AC input into the -48 V DC andsupplies the -48 V DC to the DCDU-01. Then, the DCDU-01 distributes the -48 V DC to boardsand modules in the cabinet.Figure 3-6 shows the power distribution when a -48 V DC cabinet is stacked on a 220 V ACcabinet.BTS3900Product Description 3 Power Distribution Modes of the BTS3900Issue 02 (2008-04-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd3-3
  27. 27. Figure 3-6 Power distribution when a -48 V DC cabinet is stacked on a 220 V AC cabinetPower subsystem ofstacked cabinets220 V AC-48 V DCPowersubrack(AC/DC)DRFU6-8DRFU0-5FANFANBBUGATMGATMDCDU-01Reserved220 V ACcabinet-48 V DCcabinetDCDU-01The power subrack (AC/DC) converts the external 220 V AC input into the -48 V DC andsupplies the -48 V DC to the DCDUs-01 in both cabinets. Then, the DCDUs-01 distribute the-48 V DC to boards and modules in the two cabinets.3 Power Distribution Modes of the BTS3900BTS3900Product Description3-4 Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., LtdIssue 02 (2008-04-30)
  28. 28. 4BTS3900 Monitoring SystemThe BTS3900 monitoring system enables the power monitoring, fan monitoring, andenvironment monitoring.BBU Monitoring PortsFigure 4-1 shows the monitoring ports of the BBU.Figure 4-1 Monitoring ports of the BBUGTMUETH FE0 FE1CPRI0 CPR12 CPR14CPR13CPR11 CPR15TX RXTX0 RX0 TX1 RX1 TX2 RX2 TX3 RX3 TX4 RX4 TX5 RX5LIU0LIU1LIU2LIU3USBTEST E1/T1 RSTRUNALMACT1 2 3 4 5INSIDE OUTSIDEUELPEXT-ALM1 EXT-ALM0 MON1 MON0PWREXT-ALM1 EX T-ALM0 MON1 MON0RUNAlarm signal 0 to 3Monitoring signal bus 0Monitoring signal bus 1Alarm signal 4 to 7Alarm signal 12 to 15Alarm signal 8 to 11Monitoring signal bus 0Monitoring signal bus 1l The BBU provides a maximum of two RS485 buses and 16 Boolean signals.l The modules on RS485 bus 0 cannot be interchanged with the modules on RS485 bus 1.l When two PMUs are configured, they cannot be connected to the same bus if the settingsof the DIP switches on the two PMUs are the same.Components of the Monitoring SystemFigure 4-2 shows the components of the BTS3900 monitoring system.BTS3900Product Description 4 BTS3900 Monitoring SystemIssue 02 (2008-04-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd4-1
  29. 29. Figure 4-2 Components of the monitoring systemRS485 bus0Boolean0 -15PMU FAN1 FAN2 GATM2DCDU-01 1 DCDU-01 2 Powersubrack(DC/DC)UserinterfaceGATM1EMUARS485 bus1BSCBBUNOTEThe RS485 bus 0 is indicated by bus0. The RS485 bus 1 is indicated by bus1.Table 4-1 describes the monitoring modules of the BTS3900.Table 4-1 Monitoring modules of the BTS3900Module Address Bus Pin DescriptionPMU bus0 - Configured only inthe BTS3900 cabinet(220 V AC)FAN1 bus0 - MandatoryFAN2 bus0 - Configured whentwo cabinets arestackedGATM2 bus0 - OptionalGATM1 bus1 - OptionalEMUA bus1 - OptionalDCDU-01 1 Boolean Pin 1 and pin 2 MandatoryDCDU-01 2 Boolean Pin 7 and pin 8 Configured whentwo cabinets arestackedPower subrack (DC/DC)Boolean Pin 3 and pin 6 Configured only inthe BTS3900 cabinet(+24 V DC)Functions of the BTS3900A Monitoring SystemTable 4-2 describes the functions of the BTS3900A monitoring system.4 BTS3900 Monitoring SystemBTS3900Product Description4-2 Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., LtdIssue 02 (2008-04-30)
  30. 30. Table 4-2 Functions of the BTS3900A Monitoring SystemModule Monitoring FunctionFAN l Fan fault detectionl Adjusting rotation speed of the fansl Detecting temperature and rotation speedof the fansGATM Reporting the RET control alarm signalsEMUA l Communicating with the centralprocessing unit through the two RS485portsl Detecting the input voltagel Providing the independent sensor port fordetecting humidity and temperature (12 VDC/24 V DC current type)l Providing the port for detecting theBoolean input signals in dry contact modeand in OC model Providing six external Boolean outputcontrol ports of the relay node typePMU l Communicating with the centralprocessing unit through the RS232/RS422serial portl Managing the power system and thebattery charging and dischargingl Detecting and reporting water immersionalarms, smoke alarms, door status alarms,and standby Boolean value alarms;reporting ambient humidity andtemperature, battery temperature, andstandby analog valuesl Detecting power distribution and reportingalarmsDCDU-01 Providing dry contact for surge protectionfailurePower subrack (DC/DC) l Detecting module fault alarms(overvoltage output, no output, and fanfault)l Detecting module protection alarms(overtemperature protection, andovervoltage and undervoltage protection)and AC power failure alarmsBTS3900Product Description 4 BTS3900 Monitoring SystemIssue 02 (2008-04-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd4-3
  31. 31. 5Reference Clocks of the BTS3900/BTS3900AThe BTS3900/BTS3900A supports three types of reference clocks: line clock, BITS clock, andfree-run clock.Line ClockThe BBU3900 directly extracts clock signals from the E1/T1 interface. Then, the BBU exportsthe precise 2 MHz and 8 kHz clocks after frequency dividing, phase locking, and phase adjusting.The 2 MHz and 8 kHz clocks are used for frame synchronization and bit synchronization in theBTS3900/BTS3900A.BITS ClockThe BBU3900 supports the BITS clock mode by providing a port for the 2.048 MHz BITS clock.Free-Run ClockWhen the external reference clocks are unavailable, the oven controlled crystal oscillator(OCXO) on the GTMU of the BBU3900 provides the 13 MHz clock to ensure the normaloperation of the BTS.BTS3900Product Description 5 Reference Clocks of the BTS3900/BTS3900AIssue 02 (2008-04-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd5-1
  32. 32. 6Signal Flow of the BTS3900/BTS3900AThe signal flow of the BTS3900/BTS3900A consists of the traffic signal flow and the signalingflow of the BTS. The BTS3900/BTS3900A signal flow is classified into the DL traffic signalflow, UL traffic signal flow, and signaling flow.DL Traffic Signal FlowThe DL traffic signal flow is transmitted from the BSC to the MS through the BTS3900/BTS3900A. In the BTS3900/BTS3900A, the BBU and DRFUs work together to process the DLtraffic signals. Figure 6-1 shows the DL traffic signal flow of the BTS3900/BTS3900A.Figure 6-1 DL traffic signal flowDBUSCBUSFHBUS3…32DRFUDRFUDRFUBBU MS1RFsignal3CPRIE1BSCDownlink traffic signal flowRFsignalRFsignalThe DL traffic signal flow is as follows:1. The BSC sends E1 signals to the BBU through E1 or optical cables.2. After receiving the E1 signals, the BBU processes the E1 signals as follows:(1) Extracts clock signals from the E1 signals(2) Configures the BTS system based on the data configuration on the OML(3) Encapsulates the E1 data in the format of the CPRI frame, and then transmits the datato the DRFU through the CPRI signal cableBTS3900Product Description 6 Signal Flow of the BTS3900/BTS3900AIssue 02 (2008-04-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd6-1
  33. 33. 3. After receiving the signals, the DRFU processes the signals as follows:(1) Decapsulates the high-speed CPRI frames to obtain the baseband signals(2) Transmits the baseband signals to the relevant operation units for encapsulation andinterleaving(3) Converts the digital signals into the analog signals and modulates the analog signalsinto RF signals(4) Combines or divides the RF signals based on its own configuration(5) Transmits the combined or divided signals to the antenna subsystemUL Traffic Signal FlowOpposite to the DL traffic signal flow, the UL traffic signal flow is transmitted from the MS tothe BSC through the BTS3900/BTS3900A. In the BTS3900/BTS3900A, the BBU and DRFUswork together to process the UL traffic signals. Figure 6-2 shows the UL traffic signal flow.Figure 6-2 UL traffic signal flowDBUSCBUSFHBUS3…32DRFUDRFUDRFUBBU MS1RFsignal3CPRIE1BSCUplink traffic signal flowRFsignalRFsignalThe UL traffic signal flow is as follows:1. The antenna receives the signals sent from the MS. If the TMA is configured, the receivedsignals are amplified by the TMA and then transmitted to the DRFU through the feeder.2. After receiving the UL signals, the DRFU processes the signals as follows:(1) Divides the UL signals received from the antenna, Rx1 in, or Rx2 in(2) Converts the divided analog signals into the digital signals to obtain the basebandsignals(3) Transmits the baseband signals to the relevant operation units for decryption and de-interleaving(4) Encapsulates the processed data in the format of the CPRI frame, and then transmitsthe data to the BBU through the CPRI signal cable3. After receiving the signals, the BBU processes the signals as follows:(1) Decapsulates the high-speed CPRI frames to obtain the baseband signals(2) Encapsulates the baseband signals in the format of the E1 frame, and then transmitsthe signals to the BSC through the E1 cable or the optical cable6 Signal Flow of the BTS3900/BTS3900ABTS3900Product Description6-2 Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., LtdIssue 02 (2008-04-30)
  34. 34. Signaling FlowThis describes the BTS3900/BTS3900A signaling flow on the Abis interface. The BBU servesas the control unit and works with DRFU to process the signaling. Figure 6-3 shows the signalingflow of the BTS3900/BTS3900A.Figure 6-3 Signaling flow…DRFUDRFUDRFUBBUE1BSCDBUSCBUSFHBUS2 CPRISignaling flow1The signaling flow is as follows:1. The signaling data received from the BSC is transmitted to the BBU through the Abisinterface.2. The BBU encapsulates the signaling data in the format of the CPRI frame, and thentransmits the signaling data to the DRFU through the CPRI signal cable.3. The DRFU decapsulates the CPRI signals into the baseband signals, transmits the basebandsignals to the relevant operation units for processing.4. The BBU encapsulates the data of its own status in the format of the CPRI frame, and thentransmits the data to the DRFU through the CPRI signal cable.5. The BBU decapsulates the received CPRI signals to obtain the baseband signals.6. The BBU obtains the status of the BTS by analyzing the baseband signals. Then, the BBUtransmits the information on the BTS status to the BSC through the Abis interface.BTS3900Product Description 6 Signal Flow of the BTS3900/BTS3900AIssue 02 (2008-04-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd6-3
  35. 35. 7Topologies of the BTSThe topologies of the BTS are classified into star, chain, tree, and ring topologies. The BBU andDRFUs support multiple network topologies such as star, chain, and ring topologies. In practice,these topologies can be combined. Optimum utilization of the topologies can improve the qualityof service and save the investment on the transmission equipment.Network TopologyFigure 7-1 shows the star topology of the BTS.Figure 7-1 Star topology of the BTSBSCBTSBTSBTSFigure 7-2 shows the chain topology of the BTS.Figure 7-2 Chain topology of the BTSBSCBTS BTS BTSFigure 7-3 shows the tree topology of the BTS.BTS3900Product Description 7 Topologies of the BTSIssue 02 (2008-04-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd7-1
  36. 36. Figure 7-3 Tree topology of the BTSBSCBTSBTSBTSBTSFigure 7-4 shows the ring topology of the BTS.Figure 7-4 Ring topology of the BTSBSCBTS0 BTS1BTS2A B CDComparison of Network TopologiesTable 7-1 describes the comparison of different network topologies.7 Topologies of the BTSBTS3900Product Description7-2 Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., LtdIssue 02 (2008-04-30)
  37. 37. Table 7-1 Comparison of network topologiesNetworkTopologiesApplicationScenarioAdvantage DisadvantageStar topology Applies to commonareas, especiallydensely populatedareas, such as cities.l Simplenetworkingl Easy projectimplementationl Convenientmaintenancel Flexible capacityexpansionl High networkreliabilityCompared with othertopologies, the startopology requiresmore transmissioncables.Chain topology Applies to sparselypopulated areas instrip-like terrain,such as areas alonghighways andrailway tracks.Reduces costs intransmissionequipment,construction, andtransmission linklease.l As signals passthrough manynodes, thetransmissionreliability in thechain topology isreduced.l The faults in thecurrent-levelBTSs may affectthe lower-levelBTSs.l The number oflevels in a chainnetwork shouldnot exceed five.BTS3900Product Description 7 Topologies of the BTSIssue 02 (2008-04-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd7-3
  38. 38. NetworkTopologiesApplicationScenarioAdvantage DisadvantageTree topology Applies to areaswhere networkstructures, sitedistribution, andsubscriberdistribution arecomplicated, forexample, an areawhere large-scalecoverage overlapshot spot or small-scale coverage.Requires fewertransmission cablescompared with thestar topology.l As signals passthrough manynodes, thetransmissionreliability isreduced. Thismakes it difficultfor maintenanceand engineering.l The faults in thecurrent-levelBTSs may affectthe lower-levelBTSs.l Capacityexpansion isdifficult.l The number oflevels in the treeshould not exceedfive.7 Topologies of the BTSBTS3900Product Description7-4 Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., LtdIssue 02 (2008-04-30)
  39. 39. NetworkTopologiesApplicationScenarioAdvantage DisadvantageRing topology Applies to commonscenarios. Due to itsstrong self-healingcapability, the ringtopology is preferredif permitted by therouting.If there is a breakingpoint in the ring, thering breaks into twochains at thebreaking pointautomatically. In thisway, the BTSspreceding andfollowing thebreaking point canwork normallydespite the breakingpoint; thusimproving therobustness of thesystem. For example,BTS0, BTS1, andBTS2 aresequentiallyconnected to form aring. When B fails,the BTS topologypreceding B remainsunchanged, and theBTSs following Bform a chain(anticlockwise), asshown in Figure7-5.In the ring topology,there is always a linksection that does nottransfer data.Figure 7-5 Regroupment for disconnection in the ring topologyBSCBTS0ABCDBTS2 BTS1ClockwiseAnticlockwiseBTS3900Product Description 7 Topologies of the BTSIssue 02 (2008-04-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd7-5
  40. 40. 8Configuration of the BTS3900/BTS3900AAbout This ChapterThis describes the configuration principles and typical configurations of the BTS3900/BTS3900A.8.1 Configuration Principles of the BTS3900/BTS3900AA single BTS3900/BTS3900A cabinet provides up to 12 carriers with the maximum cellconfiguration of S4/4/4, and supports the dual-band application. In the BTS3900/BTS3900A,the antenna subsystem, DRFUs, and BBU need to be configured.8.2 RF Signal Cable Connections of the DRFUOne end of the RF jumper is connected to the RF port on the DRFU and the other end is connectedto the feeder. You can determine the appropriate RF ports based on the actual configurationmodes.8.3 Topology of DRFUs Connected by CPRI CablesThe DRFUs support various network topologies: star, chain, and ring.8.4 Typical Configuration of the BTS3900/BTS3900AThis lists the number of components required for the cell configuration of S1/1/1, S2/2/2, S4/4/4,S6/6/6, S1/1/1 + S3/3/3, S2/2/2 + S2/2/2, and S4/4/4 + S4/4/4.BTS3900Product Description 8 Configuration of the BTS3900/BTS3900AIssue 02 (2008-04-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd8-1
  41. 41. 8.1 Configuration Principles of the BTS3900/BTS3900AA single BTS3900/BTS3900A cabinet provides up to 12 carriers with the maximum cellconfiguration of S4/4/4, and supports the dual-band application. In the BTS3900/BTS3900A,the antenna subsystem, DRFUs, and BBU need to be configured.Basic Configuration Principlesl Smooth upgrade of configuration. If multiple types of hardware configurations meet therequirements for configuring the parameters in network planning, the configuration modethat implements the smooth upgrade is preferred.l The BTS3900/BTS3900A solution is recommended in S4/4/4 cell configuration or lowerconfigurations. When multiple antennas are permitted, the BTS3900/BTS3900A solutioncan be applied in S6/6/6 and S4/4/4+S4/4/4 dual-band cell configurations.l Wide coverage. The DRFU supports wide coverage. If required, the DRFU can work inPBT, transmit diversity, or 4-way receive diversity mode in configurations lower than S2.l Antenna configuration principles: the dual-polarized antenna is used in S4/4/4 or lowerconfigurations; the dual-band dual-polarized antenna or two dual-polarized antennas ondifferent frequency bands are used in S4/4/4 + S4/4/4 cell configuration.Antenna Configuration Principlesl One antenna can serve up to two DRFUs.NOTESingle antenna refers to a bi-polarization antenna, which provides two antenna ports.l The single antenna mode supports the maximum cell configuration of S4; the doubleantenna mode supports the cell configurations of S4 to S12.l By default, the receive diversity is adopted in the GSM. That is, one dual-polarized antennamust be configured in a cell.l In a single cell, one dual-polarized antenna is required in the cell configurations lower thanS4 and two dual-polarized antennas are required in the cell configurations of S5 to S8.RF Configuration PrinciplesTable 8-1 describes the RF configuration principles of the BTS3900.8 Configuration of the BTS3900/BTS3900ABTS3900Product Description8-2 Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., LtdIssue 02 (2008-04-30)
  42. 42. Table 8-1 RF configuration principles of the BTS3900Principle Description ExampleConfiguration principles of asingle cabinetl Star topology is adoptedbetween the BBU andDRFUs. The DRFUs andthe high-speed interfaceson the BBU have a one-to-one mapping relationship.That is, if DRFU slot 1 isidle, CPRI port 1 on theBBU is also idle.l A single cabinet supportsthe maximum cellconfiguration of S4/4/4.NoneConfiguration principles ofmultiple cabinetsl When star and ringtopologies are adoptedbetween the BBU andDRFUs, three levels ofDRFUs in a ring can beconnected to one BBU.That is, one BBU supports3 x 3 = 9 DRFUs.l When star and chaintopologies are adoptedbetween the BBU andDRFUs, three levels ofDRFUs on a chain can beconnected to one BBU.That is, one BBU supports6 x 3 = 18 DRFUs.NoneMinimum number ofantennasl Each sector of the BTSmust be configured withthe minimum number ofantennas.l For the 2-antenna receivediversity, each sector hastwo antenna channels; forthe 4-antenna receivediversity, each sector hasfour antenna channels.NoneBTS3900Product Description 8 Configuration of the BTS3900/BTS3900AIssue 02 (2008-04-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd8-3
  43. 43. Principle Description ExampleNon-combination in thetransmit channell The non-combinationconfiguration isrecommended for theDRFU to avoid the powerloss in combination and toreduce the powerconsumption of the BTS.l If combination is required,the cavity combiner mustbe configured outside theDRFU and onecombination isrecommended.NoneConfiguring two TRXs inone sectorl A single DRFU does notsupport the S1/1application; however,three DRFUs support theS3/3 application.l When the DRFU works intransmit PBT, transmitdiversity, or 4-way receivediversity mode, a DRFUprovides only one TRX.Therefore, the actualconfiguration does notinvolve the mode ofconfiguring two TRXs inone sector.For example, for a site inS5/4/7 cell configuration,nine DRFUs are installedmeeting the requirements ofS6/4/8 cell configuration butdata is still configured inS5/4/7 cell configuration.Parity cell configuration When the sectorconfiguration in the middle isS4 or S8, the TRXs in theneighbor sectors can beconfigured to the middlesector.S3/4/3, S3/4/5, S5/4/3,S3/4/7, S7/4/3, S5/4/5,S5/4/7, S7/4/5, S7/4/7,S3/8/3, S3/8/5, S3/8/7,S5/8/3, S5/8/5, S5/8/7,S7/8/3, S7/8/5, and S7/8/7Number of DRFUs Number of DRFUs = (Roundup) Number of S1 sectors +(Number of TRXs - Numberof S1 sectors) ÷ 2l S1/1/1: Number ofDRFUs = 3l S3/3/3: Number ofDRFUs = (Round up) (9 ÷2) = 5l S1/2/3, Number of DRFUs= 1 + (Round up) ((6 - 1) ÷2) = 4l S1/1/3, Number of DRFUs= 2 + (Round up) ((5 - 2) ÷2) = 48 Configuration of the BTS3900/BTS3900ABTS3900Product Description8-4 Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., LtdIssue 02 (2008-04-30)
  44. 44. Principle Description ExampleTRX allocation in doubleantenna modeAfter TRX allocation, thecells with the odd number ofTRXs are adjacent cells.l S5 = S3 + S2 or S5 = S2 +S3l S6 = S4 + S2 or S6 = S3 +S3l S7 = S4 + S3 or S7 = S3 +S4l S8 = S4 + S4l In S3/5/4, S5 can bedivided into S3 + S2.Then, the cellconfiguration is S3/(3/2)/4.l In S2/5/5, the first S5 isdivided into S2 + S3; thesecond S5 is divided intoS3 + S2. Then, the cellconfiguration is S2/(2/3)/(3/2).NOTEIn the mode of configuring two TRXs in one sector, a DRFU belongs to only one sector.Configuration Principles of the BBUl One BBU provides six CPRI ports. In the ring topology, a single BBU supports up to 18TRXs; in the chain topology, a single BBU supports up to 36 TRXs.l Table 8-2 describes the configuration principles of the boards in the BBU.Table 8-2 Configuration principles of the boards in the BBUBoard/Module DescriptionBSBC One BSBC must be configured.UBFA One UBFA must be configured.UPEU l One UPEU must be configured.l One additional UPEU can be configuredwhen the backup power is required. Theadditional UPEU, however, cannot beconfigured with the UEIU at the sametime.UEIU l One UEIU must be configured when twoBTS3900 cabinets are configured.l One UEIU must be configured when twoAPM30 power cabinets are configured.GTMU l One GTMU must be configured.l The GTMU occupies slot 5 and slot 6.UELP l The UELP is not required in theBTS3900.l One UELP must be configured in theBTS3900A.BTS3900Product Description 8 Configuration of the BTS3900/BTS3900AIssue 02 (2008-04-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd8-5
  45. 45. 8.2 RF Signal Cable Connections of the DRFUOne end of the RF jumper is connected to the RF port on the DRFU and the other end is connectedto the feeder. You can determine the appropriate RF ports based on the actual configurationmodes.RF Cable Connections of the DRFUl The transmit mode and antenna mode described in the following list are set on the BSCside.l The RF cables differ from each other in colors. Figure 8-1 shows the mapping between theRF signal cables and their colors.Figure 8-1 Mapping between the RF signal cables and their colorsRF jumper betweenthe cascaded DRFUsFeeder jumperCPRI signal cableCPRI signal cable forcascaded DRFU modulesS1 Without Transmit Diversity, S1 with Transmit Diversity, and S2 WithoutTransmit DiversityThe S1 without transmit diversity, S1 with transmit diversity, and S2 without transmit diversityuse the configuration of one DRFU and one dual-polarized antenna. Table 8-3 describes therelated configurations.Table 8-3 Configuration (1)TypicalConfigurationModeTransmit Mode Antenna Mode CableConfigurationS1 without transmitdiversityTransmitindependency orcombiningSingle AntennaDouble Receiverl One DRFUmodulel One dual-polarized antennaS1 with transmitdiversityTransmit diversity Double AntennaS2 without transmitdiversityTransmitindependency orcombiningSingle AntennaDouble ReceiverFigure 8-2 shows the cable connections.8 Configuration of the BTS3900/BTS3900ABTS3900Product Description8-6 Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., LtdIssue 02 (2008-04-30)
  46. 46. Figure 8-2 Connections of RF cables for S1 (without transmit diversity/with transmit diversity)/S2 (without transmit diversity)INSIDE OUTSIDEUELPAntennaS2 with PBT, S3 Without Transmit Diversity, and S4 Without Transmit DiversityThe S2 with PBT, S3 without transmit diversity, and S4 without transmit diversity use theconfiguration of two DRFUs and one dual-polarized antenna. Table 8-4 describes the relatedconfigurations.Table 8-4 Configuration (2)TypicalConfigurationModeTransmit Mode Antenna Mode CableConfigurationS2 with PBT PBT Single AntennaDouble Receiverl Two DRFUsl One dual-polarized antennaS3 without transmitdiversityTransmitindependency orcombiningSingle AntennaDouble ReceiverS4 without transmitdiversityTransmitindependency orcombiningSingle AntennaDouble ReceiverFigure 8-3 shows the cable connections.BTS3900Product Description 8 Configuration of the BTS3900/BTS3900AIssue 02 (2008-04-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd8-7
  47. 47. Figure 8-3 Connections of RF cables for S2 (PBT)/S3 (without transmit diversity)/S4 (withouttransmit diversity)AntennaINSIDE OUTSIDEUELPS2 (4-Way Receive Diversity)The S2 with 4-way receive diversity uses the configuration of two DRFUs and two dual-polarized antennas. The related configuration is as follows:l Receive mode: 4-Way Receive Diversityl Set the antenna mode to Double Antenna 4-Way Receiver.Figure 8-4 shows the cable connections.8 Configuration of the BTS3900/BTS3900ABTS3900Product Description8-8 Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., LtdIssue 02 (2008-04-30)
  48. 48. Figure 8-4 Connections of RF signal cables for S2 (4-way receive diversity)Antenna AntennaINSIDE OUTSIDEUELPS2 with Transmit Diversity and S4 with Transmit IndependencyThe S2 with transmit diversity and S4 with transmit independency use the configuration of twoDRFUs and two dual-polarized antennas. Table 8-5 describes the related configurations.Table 8-5 Configuration (3)TypicalConfigurationModeTransmit Mode Antenna Mode CableConfigurationS2 (with transmitdiversity)Transmit diversity Double Antenna l Two DRFUsl Two dual-polarizedantennasS4 with transmitindependencyTransmitindependency orcombiningDouble AntennaFigure 8-5 shows the cable connections.BTS3900Product Description 8 Configuration of the BTS3900/BTS3900AIssue 02 (2008-04-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd8-9
  49. 49. Figure 8-5 Connections of RF cables for S2 (transmit diversity)/S4 (transmit independency)INSIDE OUTSIDEUELPAntenna AntennaS5 Without Transmit Diversity and S6 Without Transmit DiversityThe S5 without transmit diversity and S6 without transmit diversity use the configuration ofthree DRFUs and two dual-polarized antennas. Table 8-6 describes the related configurations.Table 8-6 Configuration (4)TypicalConfigurationModeTransmit Mode Antenna Mode CableConfigurationS5 without transmitdiversityTransmitindependency orcombiningl DRFU0: SingleAntenna DoubleReceiverl DRFU1: SingleAntenna DoubleReceiverl DRFU2: SingleAntenna DoubleReceiverl Three DRFUsl Two dual-polarizedantennas8 Configuration of the BTS3900/BTS3900ABTS3900Product Description8-10 Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., LtdIssue 02 (2008-04-30)
  50. 50. TypicalConfigurationModeTransmit Mode Antenna Mode CableConfigurationS6 without transmitdiversityTransmitindependency orcombiningl DRFU0: SingleAntenna DoubleReceiverl DRFU1: SingleAntenna DoubleReceiverl DRFU2: DoubleAntennaFigure 8-6 shows the cable connections.Figure 8-6 Connections of RF cables for S5 (without transmit diversity)/S6 (without transmitdiversity)INSIDE OUTSIDEUELPAntenna AntennaS7 Without Transmit Diversity and S8 Without Transmit DiversityThe S7 without transmit diversity and S8 without transmit diversity use the configuration of fourDRFUs and two dual-polarized antennas. Table 8-7 describes the related configurations.BTS3900Product Description 8 Configuration of the BTS3900/BTS3900AIssue 02 (2008-04-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd8-11
  51. 51. Table 8-7 Configuration (5)TypicalConfigurationModeTransmit Mode Antenna Mode CableConfigurationS7 without transmitdiversityTransmitindependency orcombiningSingle AntennaDouble Receiverl Four DRFUsl Two dual-polarizedantennasS8 without transmitdiversityTransmitindependency orcombiningSingle AntennaDouble ReceiverFigure 8-7 shows the cable connections.Figure 8-7 Connections of RF cables for S7 (without transmit diversity)/S8 (without transmitdiversity)INSIDE OUTSIDEUELPAntenna Antenna8.3 Topology of DRFUs Connected by CPRI CablesThe DRFUs support various network topologies: star, chain, and ring.Figure 8-8 shows the typical topology of the DRFUs.8 Configuration of the BTS3900/BTS3900ABTS3900Product Description8-12 Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., LtdIssue 02 (2008-04-30)
  52. 52. Figure 8-8 Typical topology of the DRFUsINSIDE OUTSIDEUELPStar connection Ring connectionChain connectionNOTEWhen the chain topology is used, a maximum of three levels of DRFUs can be connected to one BBU.Table 8-8 describes the three typical topologies of the DRFUs.Table 8-8 Comparison of the three typical topologies of the DRFUsTopology Advantage DisadvantageStar l Simple networkingl Easy projectimplementationl Convenient maintenancel Flexible capacityexpansionl High network reliabilityCompared with othertopologies, the star topologyrequires more transmissioncables.Chain Supports the maximumconfigurationl Low network reliabilityl Requires a large quantityof transmission cablesBTS3900Product Description 8 Configuration of the BTS3900/BTS3900AIssue 02 (2008-04-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd8-13
  53. 53. Topology Advantage DisadvantageRing High network reliability Complicated networkstructure8.4 Typical Configuration of the BTS3900/BTS3900AThis lists the number of components required for the cell configuration of S1/1/1, S2/2/2, S4/4/4,S6/6/6, S1/1/1 + S3/3/3, S2/2/2 + S2/2/2, and S4/4/4 + S4/4/4.Table 8-9 lists the typical configuration of the BTS3900/BTS3900A.Table 8-9 Typical configuration of the BTS3900/BTS3900ATypicalConfigurationNumber ofDRFUsNumber ofAntennasNumber of OtherComponents ofthe BTS3900Number of OtherComponents ofthe BTS3900AS1/1/1 3 3 l BTS3900cabinet: 1l FAN unit: 1l DCDU-01: 1l BBU: 1l Power subrack(DC/DC): 1 (+24V DC input)l Power subrack(AC/DC): 1 (220V AC input)l GATM: optionall APM30 powercabinet: 1l Power subrack(AC/DC): 1l PDU: 1l BBU: 1l GATM: optionall RF cabinet: 1l FMUA: 1l DCDU-02: 2l FAN unit: 2S2/2/2 3 3S4/4/4 6 3S2/2/2 +S2/2/26 6S6/6/6 9 6 l BTS3900cabinet: 2l FAN unit: 2l DCDU-01: 2l BBU: 1l Power subrack(DC/DC): 1 (+24V DC input)l Power subrack(AC/DC): 1 (220V AC input)l GATM: optionall APM30 powercabinet: 1l Power subrack(AC/DC): 1l PDU: 1l BBU: 1l GATM: optionall RF cabinet: 2l FMUA: 2l DCDU-02: 4l FAN unit: 4S1/1/1 +S3/3/38 6S4/4/4 +S4/4/412 68 Configuration of the BTS3900/BTS3900ABTS3900Product Description8-14 Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., LtdIssue 02 (2008-04-30)
  54. 54. NOTEThe number of antennas in a dual-band network is applicable to the configuration that the two bands donot share the antennas. When the two bands share the antennas, the number of antennas in the dual-bandnetwork is calculated in the same way as that in the single-band network.BTS3900Product Description 8 Configuration of the BTS3900/BTS3900AIssue 02 (2008-04-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd8-15
  55. 55. 9OM System of the BTSAbout This ChapterThe OM system implements the management, monitoring, and maintenance tasks of theBTS3900. It provides various OM modes and multiple maintenance platforms to meet differentmaintenance requirements.9.1 OM Modes of the BTSThe OM modes of the BTS consist of the Site Maintenance Terminal mode, Local MaintenanceTerminal mode, and centralized network management mode.9.2 OM Functions of the BTSThe OM functions of the BTS3900 consist of equipment management, software management,configuration management, service management, performance management, securitymanagement, alarm management, and environment monitoring.BTS3900Product Description 9 OM System of the BTSIssue 02 (2008-04-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd9-1
  56. 56. 9.1 OM Modes of the BTSThe OM modes of the BTS consist of the Site Maintenance Terminal mode, Local MaintenanceTerminal mode, and centralized network management mode.Figure 9-1 shows the components of the BTS OM system.Figure 9-1 Network structure of the OM systemSite MaintenanceTerminalBSCVLANiManager M2000LMTBTSBTSSite MaintenanceTerminalYou can maintain the BTS3900 in the following modes:l Site Maintenance Terminal mode: The Site Maintenance Terminal is locally connected tothe BTS through the Ethernet for maintenance. You can use the Site Maintenance TerminalSystem to operate and maintain the site, cell, Radio Carrier (RC), Baseband Transceiver(BT), channel, and board. In this mode, only one BTS can be maintained at a time.l Local Maintenance Terminal mode: The LMT is used to maintain the BTS through the OMlinks on the Abis interface, which is an interface between the BSC and the BTS. The LMTcommunicates with the BSC through a LAN. You can use the LMT to operate and maintainthe site, cell, RC, channel, and board. This mode is used in configuring and modifying thedata of the BSC and BTS.l Centralized network management mode: You can use the Huawei iManager M2000 tomaintain the BTS through the OM network. The M2000 can operate and maintain the site,cell, channel, and board. In this mode, multiple BTSs can be maintained at a time.Table 9-1 lists the functions of the BTS OM system.9 OM System of the BTSBTS3900Product Description9-2 Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., LtdIssue 02 (2008-04-30)
  57. 57. Table 9-1 Functions of the BTS OM systemMaintenanceObjectMaintenanceItems for the SiteMaintenanceTerminal SystemMaintenance Items forthe LMTMaintenanceItems for theM2000SitemaintenanceViewing resourcesPerforming siteOpstartConducting RFcounters testsAssigning sitemanagement rightsPerforming forcedsoftware loadingSoftware activationResetting siteshierarchicallyTesting sitesEnvironmentMonitoringTesting thetransmissionperformanceViewing ringtopologyparametersViewing bar codesViewing the alarmdelay timeManaging siteboard parametersProviding theopticaltransmission boardcommand consoleE1 BER DetectionManaging the RETantennaDownloading the BTSsoftwareConfiguring the BTSsoftwareLoading the BTS softwareActivating the BTSsoftwareViewing the BTS runningstatusViewing BTS attributesResetting BTSshierarchicallyBrowsing the BTSinitialization progressViewing the softwareversion running on the BTSTesting the BTSMonitoring BTS resourcesEnvironment MonitoringViewing BTS logsTesting the transmissionperformancePerforming the BTS hardresetProviding the opticaltransmission boardcommand consoleQuerying the temperature inthe equipment roomMaintaining the ringnetworkManaging thereporting ofperformance dataManaging NE usersMonitoring NE statusProviding centralizeduser managementMonitoring NEperformanceMonitoring NEs inreal timeViewing fileinformation of NEsBTS3900Product Description 9 OM System of the BTSIssue 02 (2008-04-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd9-3
  58. 58. MaintenanceObjectMaintenanceItems for the SiteMaintenanceTerminal SystemMaintenance Items forthe LMTMaintenanceItems for theM2000CellmaintenanceManaging cellattributesManaging extendedcell attributesPerforming cellOpstartTesting the cellperformanceModifying theadministrative stateof the cellModifying theadministrative statePerforming force handoversSending cell systemmessagesQuerying frequencyscanningConfiguring frequencyscanningViewing the statisticsof the celldistributionViewing the basicconfiguration of thecellViewing theconfiguration of theCCH of a cellViewing neighborcellsMonitoring theconfiguration of anobjectCollecting the alarmsof the monitoredobjectBlocking/unblockingcellsBTmaintenancePerforming BTOpstartReinitializing theBTTRX Full PowerEmissionModifying theadministrative stateof the BTTesting the BTViewing thechannel statusNone None9 OM System of the BTSBTS3900Product Description9-4 Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., LtdIssue 02 (2008-04-30)
  59. 59. MaintenanceObjectMaintenanceItems for the SiteMaintenanceTerminal SystemMaintenance Items forthe LMTMaintenanceItems for theM2000RCmaintenanceManaging RCattributesManaging RCextended attributesPerforming RCOpstartReinitializing theRCModifying theadministrative stateof the RCViewing theautomatic powercorrection typeObtaining thepower mode of theRCModifying theadministrative stateTesting the RC performanceViewing the power mode ofthe RCViewing the automaticpower correction typeConducting loopback testson the RCTesting idle timeslotsTesting Codec modesResetting RCsControlling the RC powerNoneChannelmaintenanceManaging channelattributesPerforming channelOpstartModifying theadministrative stateof the channelConductingloopback testsModifying theadministrative stateMonitoring the channelstatusMonitoring the channelinterference bandConducting loopback testson the channelTesting the channelperformanceViewing the basicconfiguration of thecellViewing theconfiguration of theCCH of a cellBTS3900Product Description 9 OM System of the BTSIssue 02 (2008-04-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd9-5
  60. 60. MaintenanceObjectMaintenanceItems for the SiteMaintenanceTerminal SystemMaintenance Items forthe LMTMaintenanceItems for theM2000BoardmaintenanceConfiguring racksConfiguring boardsManaging boardsViewing the softwareversion running on theboardViewing the matching ofboardsViewing bar codes of boardsViewing board informationMaintaining clocksResetting boardsPerforming switchover ofboardsViewing the power modulestatusResetting smoke alarmsManaging batteriesSetting/Viewing powermodule parametersConducting loopback testson the Layer 3 linkViewing the cavity state andthe cavity frequencySetting the TMA feederResetting the auxiliaryequipmentMaintaining the RETantennaViewing NE boardreportsViewing inventorydata9.2 OM Functions of the BTSThe OM functions of the BTS3900 consist of equipment management, software management,configuration management, service management, performance management, securitymanagement, alarm management, and environment monitoring.Equipment ManagementThrough the OM system, you can query the status of all the components (boards/modules) andall the external devices (power supply/environment monitoring/RET). You can also performdata configuration and status management for some devices.9 OM System of the BTSBTS3900Product Description9-6 Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., LtdIssue 02 (2008-04-30)
  61. 61. Software Managementl Provides various functions, such as downloading and activating the BTS software,upgrading patches, and loading and downloading files. The associated tasks involveconsistency check on the software and hardware releases, release management, andsoftware upgrade.l Allows the BTS software upgrade through the USB port on the BBU without a PC.Configuration Managementl Checks whether the added, deleted, or changed BTS data is consistent with the actualsituation.l Supports automatic data backup.l Supports dynamic and static data configuration. In dynamic data configuration, the dataimmediately take effect after modification; in static data configuration, the modified datatake effect after the BTS is reset.Service Managementl Supports parameter setting and alarm query for the baseband boards, RET antenna, andenvironment monitoring device.l Supports various OM functions for the RET antenna, such as automatic scanning, dataconfiguration (antenna tilt and TMA gain), status query, and alarm reporting.l Supports perfect self-test on hardware installation. The BTS can use the software packagesaved in the USB disk to perform local upgrade; thus shortening the upgrade period.Performance Managementl Monitors the performance of the internal and external telecommunications networks andgenerates alarms when the performance deterioratesl Monitors the operating status of the BTS, such as monitors the traffic volume on the portsand measures the technical data of the BTSl Monitoring the usage of key components in the board, such as the CPU and DSPSecurity ManagementThe O&M system provides security management functions, such as connection management,user authentication, encryption, and forward and backward resolution of the interface messagesbetween the BTS software and the OMC.Alarm Managementl Supports query of real-time alarms and history alarmsl Collects internal and external alarms, such as the environment monitoring device inputsand Boolean inputsl Processes alarm correlation to ensure precision and accuracy in locating alarmsl Provides functions of saving, interpreting, prompting, shielding, filtering, confirming,clearing, post processing, and reporting of alarmsl Detecting and reporting alarms, and processing alarm correlation in the systemBTS3900Product Description 9 OM System of the BTSIssue 02 (2008-04-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd9-7
  62. 62. Environment Monitoringl The BTS has a perfect environment monitoring system.l The environment monitoring system provides customized solutions regarding door control,infrared, smoke, water damage, humidity, and temperature monitoring.9 OM System of the BTSBTS3900Product Description9-8 Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., LtdIssue 02 (2008-04-30)
  63. 63. 10Technical Specifications of the BTS3900About This ChapterThis describes the BTS3900 technical specifications, which consist of capacity specifications,RF specifications, engineering specifications, lightning protection specifications, and otherspecifications related to physical ports and environment.10.1 Capacity Specifications of the BTS3900/BTS3900AThe BTS3900/BTS3900A capacity specifications are in terms of the number of TRXs and cells.10.2 RF Specifications of the BTS3900/BTS3900AThe radio frequency specifications of the BTS3900/BTS3900A involve the specifications relatedto the operating frequency bands, the transmitter, and the receiver.10.3 Engineering Specifications of the BTS3900This provides the engineering specifications of the BTS3900. These specifications consist of thedimensions, weight, power supply, and power consumption.10.4 Surge Protection Specifications of the BTS3900The BTS3900 provides surge protection for its ports. The surge protection specifications of theBTS3900 ports consist of the DC or AC supply, antenna, transmission, and dry contact alarms.10.5 Ports of the BTS3900The BTS3900 provides various physical ports for the external equipment connection. The portsof the BTS3900 consist of power ports, transmission ports, and alarm ports.10.6 Compliance Standards of the BTS3900/BTS3900AThe BTS3900/BTS3900A complies with the standards of power distribution, EMC, surgeprotection, safety, operating environment, transportation adaptability, and storage adaptability.10.7 Environmental Requirements of the BTS3900The environmental requirements related to the BTS3900 refer to the requirements on theenvironment during its operation, transportation, and storage.BTS3900Product Description 10 Technical Specifications of the BTS3900Issue 02 (2008-04-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd10-1
  64. 64. 10.1 Capacity Specifications of the BTS3900/BTS3900AThe BTS3900/BTS3900A capacity specifications are in terms of the number of TRXs and cells.l A single cabinet holds up to six DRFUs.l A single cabinet serves up to six sectors.l A single cabinet supports the maximum configuration of S4/4/4, up to 12 GSM TRXs.l Multiple cabinets support the maximum configuration of S24/24/24, up to 72 GSM TRXs.10.2 RF Specifications of the BTS3900/BTS3900AThe radio frequency specifications of the BTS3900/BTS3900A involve the specifications relatedto the operating frequency bands, the transmitter, and the receiver.Operating Frequency BandTable 10-1 lists the frequency bands supported by the BTS3900/BTS3900A. The spacingbetween two frequencies is 200 kHz.Table 10-1 Operating frequency bands of the BTS3900/BTS3900AOperating FrequencyBandReceive Band Transmit BandPGSM 900 MHz 890-915 MHz 935-960 MHzEGSM 900 MHz 880-915 MHz 925-960 MHzGSM 1800 MHz 1710-1785 MHz 1805-1880 MHzTransmitter SpecificationsTable 10-2 lists the rated output power of the DRFU in the BTS3900/BTS3900A.Table 10-2 Output power of the DRFU in the BTS3900/BTS3900AOperating FrequencyBandWork Mode Output Power (GMSK/8PSK TOC)900 MHz Non-combination 45 W/30 W900 MHz Combination 20 W/14 W900 MHz PBT 71 W/47 W1800 MHz Non-combination 40 W/26 W1800 MHz Combination 18 W/12 W10 Technical Specifications of the BTS3900BTS3900Product Description10-2 Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., LtdIssue 02 (2008-04-30)
  65. 65. Operating FrequencyBandWork Mode Output Power (GMSK/8PSK TOC)1800 MHz PBT 63 W/42 WReceiver SpecificationsTable 10-3 lists the static receiver sensitivity of the BTS3900/BTS3900A.Table 10-3 Receiver sensitivity of the BTS3900/BTS3900AReceive Mode Operating Frequency Band Static Sensitivity (TypicalValue)Receive independency 900 MHz -113 dBm1800 MHz -113 dBmTwo-way receivediversity900 MHz -116 dBm1800 MHz -116 dBmFour-way receivediversity900 MHz -118.5 dBm1800 MHz -118.5 dBm10.3 Engineering Specifications of the BTS3900This provides the engineering specifications of the BTS3900. These specifications consist of thedimensions, weight, power supply, and power consumption.DimensionsTable 10-4 lists the dimensions of the BTS3900 cabinet.Table 10-4 DimensionsConfiguration Type Width (mm) Depth (mm) Height (mm)Cabinet 600 450 900Base 600 420 40WeightTable 10-5 lists the weight of the BTS3900 cabinet.BTS3900Product Description 10 Technical Specifications of the BTS3900Issue 02 (2008-04-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd10-3
  66. 66. Table 10-5 Weight of the cabinetConfiguration Type Weight (kg)Empty cabinet 57Full Configuration 142Power SupplyTable 10-6 lists the specifications of the power input for the BTS3900.Table 10-6 Specifications of the input powerPower Type Rated Value Permissible Range-48 V DC -48 V DC -38.4 V DC to -57 V DC+24 V DC +24 V DC +19 V DC to +29 V DC220 V AC 220 V AC 176 V AC to 280 V ACNOTEThe +24 V DC power cabinet and the 220 V AC power cabinet are installed with a power conversion unit.Therefore, an external power cabinet is not required.Power ConsumptionTable 10-7 lists the power consumption value of the BTS3900 in S4/4/4 configuration.Table 10-7 Power consumption of the BTS3900 (S4/4/4)Mode Maximum PowerConsumption (W)Typical PowerConsumption (W)GSM900, TOC = 20 W 2060 1130DCS1800, TOC = 18 W 2010 1130NOTEThe typical power consumption refers to the measurement value when the traffic is 30%.10.4 Surge Protection Specifications of the BTS3900The BTS3900 provides surge protection for its ports. The surge protection specifications of theBTS3900 ports consist of the DC or AC supply, antenna, transmission, and dry contact alarms.10 Technical Specifications of the BTS3900BTS3900Product Description10-4 Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., LtdIssue 02 (2008-04-30)
  67. 67. NOTEThe unspecified surge current with maximum discharge current is called nominal discharge current.Table 10-8 Surge protection specifications of the BTS3900Port Surge Protection Mode Surge CurrentDC power port Differential mode 1 kA (8/20 us surge current)Common mode 2 kA (8/20 us surge current)AC power port Differential mode 3 kA (8/20 us surge current)Common mode 5 kA (8/20 us surge current)Antenna port(including the GPSport)Differential mode 8 kA (8/20 us surge current)Common mode 40 kA (8/20 us surge current)Indoor signal port Differential mode 250 A (8/20 us surge current)Common mode 250 A (8/20 us surge current)Indoor dry contactinputDifferential mode 250 A (8/20 us surge current)Common mode 250 A (8/20 us surge current)Indoor dry contactoutputVoltage resistance 1,500 V ACOutdoor E1/T1 signalportDifferential mode 3 kA (8/20 us surge current)Common mode 5 kA (8/20 us surge current)RET antenna Differential mode 3 kA (8/20 us surge current)Common mode 5 kA (8/20 us surge current)Outdoor dry contactinputDifferential mode 3 kA (8/20 us surge current)Common mode 5 kA (8/20 us surge current)10.5 Ports of the BTS3900The BTS3900 provides various physical ports for the external equipment connection. The portsof the BTS3900 consist of power ports, transmission ports, and alarm ports.Power PortsTable 10-9 Power ports of the BTS3900Port Cabinet Type DescriptionPower input terminal -48 V DC cabinet -48 V DC inputBTS3900Product Description 10 Technical Specifications of the BTS3900Issue 02 (2008-04-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd10-5
  68. 68. Port Cabinet Type DescriptionPower input terminal +24 V DC cabinet +24 V DC inputL and N terminals 220 V AC cabinet 220 V AC inputTransmission PortsTable 10-10 BBU transmission portsPort Connector DescriptionINSIDE DB25 male connector Transmits the four E1/T1 signalsbetween the UELP and the GTMUOUTSIDE DB26 male connector Provides the input and output of thefour E1/T1 signals between the BBUand the BSCCPRI0-CPRI5 SFP connector Provides the input and output of theoptical and electrical transmissionsignals between the BBU and the RFmoduleE1/T1 DB26 male connector Provides the input and output of thefour E1/T1 signals between theGTMU and the UELP or between theGTMU and the BSCFE0 RJ45 connector A reserved port that performs thefollowing function:Connects the BBU to a routing devicein the equipment room through theEthernet cable to transmit networkinformationFE1 DLC connector A reserved port that performs thefollowing function:Connects the BBU to a routing devicein the equipment room through theEthernet cable to transmit networkinformationTable 10-11 DRFU transmission portsPort Connector DescriptionCPRI0 SFP female connector Connected to the BBU directly, orconnected to the upper-level DRFU inthe cascading configuration10 Technical Specifications of the BTS3900BTS3900Product Description10-6 Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., LtdIssue 02 (2008-04-30)
  69. 69. Port Connector DescriptionCPRI1 SFP female connector Connected to the lower-level DRFUin the cascading configurationAlarm PortsIn the BTS3900 system, the alarms ports vary with the optional modules configured in theBBU3900.l When the BBU3900 is configured with one UPEU, two RS485 buses and eight dry contactsignals are provided.l When the BBU3900 is configured with two UPEUs or one UPEU plus one UEIU, 4 RS485buses and 16 dry contact signals are provided.Table 10-12 BTS3900 alarm portsPort Connector DescriptionMON0 RJ45connectorProvides the input and output of theexternally collected environmentmonitoring signals in format of the RS485frame to the GTMUMON1 RJ45connectorReservedEXT-ALM0 RJ45connectorTransmits the externally collectedenvironment monitoring signals in formatof the dry contact signals to the GTMUEXT-ALM1 RJ45connectorReservedOther External PortsTable 10-13 Other external ports of the BBU3900Port Connector DescriptionETH RJ45 connector For local maintenance andcommissioningUSB USB connector A reserved port that performs thefollowing function:Used in software upgrade from aUSB diskTST USB connector Connected to a tester for testing theoutput clock signalsBTS3900Product Description 10 Technical Specifications of the BTS3900Issue 02 (2008-04-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd10-7
  70. 70. 10.6 Compliance Standards of the BTS3900/BTS3900AThe BTS3900/BTS3900A complies with the standards of power distribution, EMC, surgeprotection, safety, operating environment, transportation adaptability, and storage adaptability.Power Distribution StandardsThe compliance standards are as follows:l ETS300132-1-1 Power Supply Interface at the Input to Telecommunication Equipmentl ETS300132-1-2 Power Supply Interface at the Input to Telecommunication EquipmentEMC StandardsThe compliance standards are as follows:l CISPR 22 (1997): limits and methods of measurement of radio disturbance characteristicsof informationl EN55022 (1998): limits and methods of measurement of radio disturbance characteristicsof informationl CISPR 24 (1998): Information Technology Equipment --Immunity characteristics --Limitsand methods measurementl IEC61000-4-2: Electromagnetic compatibility (EMC) Part 2:  Testing and measurementtechniques Section 2:  Electrostatic discharge immunity test Basic EMC Publicationl IEC61000-4-3: Electromagnetic compatibility; Part 3:  Testing and measurementtechniques Section 3 radio frequency electromagnetic fields; immunity testl IEC61000-4-4: Electromagnetic compatibility (EMC) Part 4:  Testing and measurementtechniques Section 4:  Electrical fast transient/burst immunity test Basic EMCpublicationl IEC61000-4-5: Electromagnetic compatibility (EMC) Part 5:  Testing and measurementtechniques Section 5:  Surge immunity testl IEC61000-4-6: Electromagnetic compatibility: Part 6:  Testing and measurementtechniques: Section 6 conducted disturbances induced by radio-frequency fields; immunitytestl IEC61000-4-29: Electromagnetic compatibility: Part 29: Testing and measurementtechniques and voltage variations on d.c. Input power port immunity testl ETSI 301 489-1 V1.3.1 (2001-09): Electromagnetic compatibility and Radio spectrumMatters (ERM);  Electromagnetic Compatibility (EMC) standard for radio equipmentand services; Part 1:  Common technical requirementsl FCC Part 15: Federal Communication Committee - part 15- radio frequency deviceSurge Protection StandardsThe compliance standards are as follows:l IEC 61312-1(1995) Protection Against Lightning Electromagnetic Impulse Part I : GeneralPrinciples10 Technical Specifications of the BTS3900BTS3900Product Description10-8 Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., LtdIssue 02 (2008-04-30)
  71. 71. l IEC 61643-1(1998) Surge Protective devices connected to low-voltage power distributionsystemsl ITU-T K.11(1993) Principles of Protection Against Overvoltage and Overcurrentsl ITU-T K.27(1996) Bonding Configurations and Earthing Inside a TelecommunicationBuildingl ETS 300 253(1995) Equipment Engineering; Earthing and bonding of telecommunicationequipment in telecommunication centersSafety StandardsThe compliance standards are as follows:l 3G TR34.907 V3.0.0 Report on electrical safety requirements and regulationsl IEC 60950-1 Safety of information technology equipmentl EN 60950-1 Safety of information technology equipmentl IEC60215 Safety requirement for radio transmitting equipmentOperating Environment StandardsThe compliance standards are as follows:l EUROPEAN ETS 300 019-1-3 Class 3.1 "Stationary use at weatherprotected locations"l EUROPEAN ETS 300 753: Equipment Engineering(EE) Acoustic noise emitted bytelecommunications equipment 1997l EUROPEAN ETS 300 019-1-3-AmdTransportation Adaptability StandardsThe compliance standard is as follows:EUROPEAN ETS 300 019-1-2 Class 2.3 "PUBLIC transportation"Storage Adaptability StandardsThe compliance standard is as follows:EUROPEAN ETS 300 019-1-1 Class 1.2 "not temperature-controlled storage"10.7 Environmental Requirements of the BTS3900The environmental requirements related to the BTS3900 refer to the requirements on theenvironment during its operation, transportation, and storage.10.7.1 Environment Requirements for Operating the BTS3900This describes the environment requirements for operating the BTS3900. It focuses on theclimatic, biological, air purity, and mechanical stress requirements for operating the BTS3900.10.7.2 Environment Requirements for Transporting the BTS3900This describes the optimal transportation environment of the BTS3900. It focuses on the climatic,waterproofing, biological, air cleanness, and mechanical stress requirements for transporting theBTS3900.BTS3900Product Description 10 Technical Specifications of the BTS3900Issue 02 (2008-04-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd10-9

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