NodeB Technical Description(V200_09)

NodeBV200

Technical Description

Issue 09Date 20101110

HUAWEI TECHNOLOGIES CO., LTD.

Copyright Huawei Technologies Co., Ltd. 2010. All rights reserved.No part of this document may be reproduced or transmitted in any form or by any means without prior writtenconsent of Huawei Technologies Co., Ltd. Trademarks and Permissions

and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd.All other trademarks and trade names mentioned in this document are the property of their respective holders. NoticeThe purchased products, services and features are stipulated by the contract made between Huawei and thecustomer. All or part of the products, services and features described in this document may not be within thepurchase scope or the usage scope. Unless otherwise specified in the contract, all statements, information,and recommendations in this document are provided "AS IS" without warranties, guarantees or representationsof any kind, either express or implied.

The information in this document is subject to change without notice. Every effort has been made in thepreparation of this document to ensure accuracy of the contents, but all statements, information, andrecommendations in this document do not constitute the warranty of any kind, express or implied. Huawei Technologies Co., Ltd.Address: Huawei Industrial Base

Bantian, LonggangShenzhen 518129People's Republic of China

Website: http://www.huawei.comEmail: [email protected]

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About This Document

PurposeThis document describes the NodeB in terms of functions, logical structure, hardwareconfiguration, monitoring principles, topologies, clock synchronization modes, operation andmaintenance, and reliability.

Product VersionsThe following table lists the product versions related to this document.

Product Name Product VersionBTS3900 WCDMA (hereinafter referred toas BTS3900)

V200R011V200R012

BTS3900A WCDMA (hereinafter referredto as BTS3900A)

V200R011V200R012

BTS3900L WCDMA (hereinafter referredto as BTS3900L)

V200R012

DBS3900 WCDMA (hereinafter referred toas DBS3900)

V200R011V200R012

iDBS3900 WCDMA (hereinafter referredto as iDBS3900)

V200R011V200R012

BTS3900C WCDMA (hereinafter referredto as BTS3900C)

V200R011V200R012

Intended Audience

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This document is intended for:l Network plannersl Field engineersl System engineers

Organization1 Changes in the NodeB Technical DescriptionThis section describes the changes in the NodeB Technical Description.2 Functions of the NodeBDeveloped in compliance with the 3GPP R99/R4/R5/R6/R7/R8 FDD protocols, Huawei NodeBhas comprehensive functions and antenna system solutions.3 Logical Structure of the NodeBThis describes the logical structures of the BBU3900, RRU, WRFU, RHUB3808, andpRRU3801.4 Hardware Configuration of the NodeBThis describes the hardware configuration of the BTS3900, BTS3900A, BTS3900L,DBS3900, and BTS3900C.5 Monitoring Principles of the NodeBThis describes the monitoring principles of the BTS3900, BTS3900A, BTS3900L, andDBS3900.6 Topologies of the NodeBThis describes the topologies of the NodeB, which consists of the networking on the Iub interfaceand networking on the CPRI interface.7 Clock Synchronization Mode of the NodeBThe NodeB supports clock synchronization with the Iub interface clock, GPS clock, BITS clock,and IP clock. The NodeB also supports the free-run clock.8 Surge Protection Specifications for Ports on the NodeBThis section describes the surge protection specifications for the ports on the BTS3900,BTS3900A, BTS3900L, BTS3900C, BBU3900, RRU, and WRFU.9 Operation and Maintenance of the NodeBThe OM subsystem of the NodeB manages, monitors, and maintains the software, hardware,and configuration of the NodeB. In addition, the OM subsystem provides various OM modesand multiple maintenance platforms to meet different maintenance requirements.10 Reliability of the NodeBThe NodeB features a new system architecture and a complete redundancy design. In addition,the NodeB takes advantage of Huawei large-capacity ASIC chips to enhance the integration ofmodules and to reduce the number of parts, thus significantly improving the system reliability.

About This DocumentNodeB


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ConventionsSymbol ConventionsThe symbols that may be found in this document are defined as follows.

Symbol DescriptionIndicates a hazard with a high level of risk, which if notavoided, will result in death or serious injury.

Indicates a hazard with a medium or low level of risk, whichif not avoided, could result in minor or moderate injury.

Indicates a potentially hazardous situation, which if notavoided, could result in equipment damage, data loss,performance degradation, or unexpected results.Indicates a tip that may help you solve a problem or savetime.Provides additional information to emphasize or supplementimportant points of the main text.

General ConventionsThe general conventions that may be found in this document are defined as follows.

Convention DescriptionTimes New Roman Normal paragraphs are in Times New Roman.Boldface Names of files, directories, folders, and users are in

boldface. For example, log in as user root.Italic Book titles are in italics.Courier New Examples of information displayed on the screen are in

Courier New.

Command ConventionsThe command conventions that may be found in this document are defined as follows.

Convention DescriptionBoldface The keywords of a command line are in boldface.Italic Command arguments are in italics.[ ] Items (keywords or arguments) in brackets [ ] are optional.



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Convention Description{ x | y | ... } Optional items are grouped in braces and separated by

vertical bars. One item is selected.[ x | y | ... ] Optional items are grouped in brackets and separated by

vertical bars. One item is selected or no item is selected.{ x | y | ... }* Optional items are grouped in braces and separated by

vertical bars. A minimum of one item or a maximum of allitems can be selected.

[ x | y | ... ]* Optional items are grouped in brackets and separated byvertical bars. Several items or no item can be selected.

GUI ConventionsThe GUI conventions that may be found in this document are defined as follows.

Convention DescriptionBoldface Buttons, menus, parameters, tabs, window, and dialog titles

are in boldface. For example, click OK.> Multi-level menus are in boldface and separated by the ">"

signs. For example, choose File > Create > Folder.

Keyboard OperationsThe keyboard operations that may be found in this document are defined as follows.

Format DescriptionKey Press the key. For example, press Enter and press Tab.Key 1+Key 2 Press the keys concurrently. For example, pressing Ctrl+Alt

+A means the three keys should be pressed concurrently.Key 1, Key 2 Press the keys in turn. For example, pressing Alt, A means

the two keys should be pressed in turn.

Mouse OperationsThe mouse operations that may be found in this document are defined as follows.

Action DescriptionClick Select and release the primary mouse button without moving

the pointer.

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Action DescriptionDouble-click Press the primary mouse button twice continuously and

quickly without moving the pointer.Drag Press and hold the primary mouse button and move the

pointer to a certain position.



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Contents

About This Document...................................................................................................................iii1 Changes in the NodeB Technical Description.....................................................................1-12 Functions of the NodeB.............................................................................................................2-13 Logical Structure of the NodeB...............................................................................................3-1

3.1 Logical Structure of the BBU3900..................................................................................................................3-23.2 Logical Structure of the RRU..........................................................................................................................3-33.3 Logical Structure of the WRFU......................................................................................................................3-63.4 Logical Structure of the RHUB3808...............................................................................................................3-73.5 Logical Structure of the pRRU3801................................................................................................................3-8

4 Hardware Configuration of the NodeB.................................................................................4-14.1 Hardware Configurations of the BTS3900......................................................................................................4-2

4.1.1 Typical Configurations...........................................................................................................................4-24.1.2 Configuration in 4-Way RX Diversity...................................................................................................4-54.1.3 Configuration in TX Diversity...............................................................................................................4-64.1.4 Configuration in 2 x 2 MIMO................................................................................................................4-84.1.5 Configuration in 2T4R.........................................................................................................................4-10

4.2 Hardware Configurations of the BTS3900A.................................................................................................4-124.2.1 Typical Configurations.........................................................................................................................4-134.2.2 Configuration in 4-Way RX Diversity.................................................................................................4-154.2.3 Configuration in TX Diversity.............................................................................................................4-174.2.4 Configuration in 2 x 2 MIMO..............................................................................................................4-194.2.5 Configuration in 2T4R ........................................................................................................................4-21

4.3 Hardware Configurations of the BTS3900L.................................................................................................4-234.3.1 Typical Configurations.........................................................................................................................4-244.3.2 Configuration in 4-Way RX Diversity.................................................................................................4-264.3.3 Configuration in TX Diversity.............................................................................................................4-284.3.4 Configuration in 2 x 2 MIMO..............................................................................................................4-304.3.5 Configuration in 2T4R ........................................................................................................................4-32

4.4 Hardware Configurations of the DBS3900...................................................................................................4-344.4.1 Typical Configuration..........................................................................................................................4-354.4.2 Configuration in 4-Way RX Diversity.................................................................................................4-394.4.3 Configuration in TX Diversity.............................................................................................................4-43

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4.4.4 Configuration in 2 x 2 MIMO..............................................................................................................4-464.4.5 Configuration in 2T4R ........................................................................................................................4-49

4.5 Hardware Configuration of the BTS3900C..................................................................................................4-525 Monitoring Principles of the NodeB......................................................................................5-16 Topologies of the NodeB..........................................................................................................6-1

6.1 Topology on the Iub Interface.........................................................................................................................6-26.1.1 ATM-Based Topologies.........................................................................................................................6-26.1.2 IP-Based Topologies..............................................................................................................................6-4

6.2 Topologies on the CPRI Interface...................................................................................................................6-47 Clock Synchronization Mode of the NodeB.........................................................................7-18 Surge Protection Specifications for Ports on the NodeB....................................................8-19 Operation and Maintenance of the NodeB...........................................................................9-1

9.1 OM Modes of the NodeB................................................................................................................................9-29.2 OM Functions of the NodeB...........................................................................................................................9-3

10 Reliability of the NodeB.......................................................................................................10-1Index.................................................................................................................................................i-1

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Figures

Figure 3-1 Logical structure of the BBU3900......................................................................................................3-2Figure 3-2 Logical structure of the RRU3804, RRU3801E, or RRU3806.......................................................... 3-3Figure 3-3 Logical structure of the RRU3805, RRU3808, or RRU3908.............................................................3-4Figure 3-4 Logical structure of the RXU............................................................................................................. 3-4Figure 3-5 Logical structure of the WRFU..........................................................................................................3-6Figure 3-6 Logical structure of the RHUB3808...................................................................................................3-7Figure 3-7 Logical structure of the pRRU3801 with optical ports.......................................................................3-8Figure 3-8 Logical structure of the pRRU3801 with electrical ports...................................................................3-9Figure 4-1 Installation slots of the boards of the BTS3900 in typical configurations......................................... 4-3Figure 4-2 Cable connections of the BTS3900 in 3 x 1 configuration.................................................................4-4Figure 4-3 Cable connections of the BTS3900 in 3 x 4 configuration.................................................................4-4Figure 4-4 Installation slots of the BTS3900 in 4-way RX diversity...................................................................4-5Figure 4-5 Cable connections of the BTS3900 in 4-way RX diversity................................................................4-6Figure 4-6 Installation slots of the boards of the BTS3900 in TX diversity........................................................4-7Figure 4-7 Cable connections of the BTS3900 in TX diversity...........................................................................4-8Figure 4-8 Installation slots of the boards of the BTS3900 in 2 x 2 MIMO configuration................................. 4-9Figure 4-9 Cable connections of the BTS3900 in 2 x 2 MIMO configuration..................................................4-10Figure 4-10 Installation slots of the boards of the BTS3900 in 2T4R configurations.......................................4-11Figure 4-11 Cable connections of the BTS3900 in 2T4R configuration............................................................4-12Figure 4-12 Installation slots of the boards of the BTS3900A in typical configurations...................................4-13Figure 4-13 Cable connections of the BTS3900A in 3 x 1 configuration..........................................................4-14Figure 4-14 Cable connections of the BTS3900A in 3 x 4 configuration..........................................................4-15Figure 4-15 Installation slots of the BTS3900A in 4-way RX diversity............................................................4-16Figure 4-16 Cable connections of the BTS3900A in 4-way RX diversity.........................................................4-17Figure 4-17 Installation slots of the boards of the BTS3900A in TX diversity.................................................4-18Figure 4-18 Cable connections of the BTS3900A in TX diversity....................................................................4-19Figure 4-19 Installation slots of the boards of the BTS3900A in 2 x 2 MIMO configuration...........................4-20Figure 4-20 Cable connections of the BTS3900A in 2 x 2 MIMO configuration.............................................4-21Figure 4-21 Installation slots of the boards of the BTS3900A in 2T4R configurations....................................4-22Figure 4-22 Cable connections of the BTS3900A in 2T4R configuration.........................................................4-23Figure 4-23 Installation slots of the boards of the BTS3900L in typical configurations...................................4-25Figure 4-24 Cable connections of the BTS3900L in 3 x 1 configuration..........................................................4-25Figure 4-25 Cable connections of the BTS3900L in 3 x 4 configuration..........................................................4-26

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Figure 4-26 Installation slots of the BTS3900L in 4-way RX diversity............................................................4-27Figure 4-27 Cable connections of the BTS3900L in 4-way RX diversity.........................................................4-28Figure 4-28 Installation slots of the boards of the BTS3900L in TX diversity..................................................4-29Figure 4-29 Cable connections of the BTS3900L in TX diversity....................................................................4-30Figure 4-30 Installation slots of the boards of the BTS3900L in 2 x 2 MIMO configuration...........................4-31Figure 4-31 Cable connections of the BTS3900L in 2 x 2 MIMO configuration..............................................4-32Figure 4-32 Installation slots of the boards of the BTS3900L in 2T4R configurations.....................................4-33Figure 4-33 Cable connections of the BTS3900L in 2T4R configuration.........................................................4-34Figure 4-34 Cable connections of the DBS3900 in 3 x 1 configuration (configured with the RRU3804)........4-36Figure 4-35 Cable connections of the DBS3900 in 3 x 1 configuration (configured with the RRU3808)........4-37Figure 4-36 Cable connections of the DBS3900 in 3 x 4 configuration (configured with the RRU3804)........4-38Figure 4-37 Cable connections of the DBS3900 in 3 x 4 configuration (configured with the RRU3808)........4-39Figure 4-38 Cable connections of the DBS3900 in 4-way RX diversity (configured with the RRU3804).......4-40Figure 4-39 Cable connections of the DBS3900 in 4-way RX diversity (configured with the RRU3808).......4-41Figure 4-40 Cable connections of the DBS3900 in 4-way RX diversity (configured with the RRU3804 and RXU).............................................................................................................................................................................4-42Figure 4-41 Cable connections of the DBS3900 in 4-way RX diversity (configured with the RRU3808 and RXU).............................................................................................................................................................................4-43Figure 4-42 Cable connections of the DBS3900 in TX diversity (configured with the RRU3804)..................4-45Figure 4-43 Cable connections of the DBS3900 in TX diversity (configured with the RRU3808)..................4-46Figure 4-44 Cable connections of the DBS3900 in 2 x 2 MIMO configuration (configured with the RRU3804).............................................................................................................................................................................4-48Figure 4-45 Cable connections of the DBS3900 in 2 x 2 MIMO configuration (configured with the RRU3808).............................................................................................................................................................................4-49Figure 4-46 Cable connections of the DBS3900 in 2T4R configuration (configured with the RRU3804).......4-51Figure 4-47 Cable connections of the DBS3900 in 2T4R configuration (configured with the RRU3808 and RXU).............................................................................................................................................................................4-52Figure 4-48 Cable connections of the BTS3900C in 1 x 3 configuration..........................................................4-53Figure 5-1 Monitoring Principles of the BTS3900..............................................................................................5-2Figure 5-2 Monitoring Principles of the BTS3900L............................................................................................5-3Figure 5-3 Monitoring Principles of the BTS3900A (-48V DC).........................................................................5-3Figure 5-4 Monitoring Principles of the BTS3900A (AC)..................................................................................5-4Figure 5-5 Monitoring Principles for no-remote RRU.........................................................................................5-5Figure 5-6 Monitoring Principles for remote RRU..............................................................................................5-5Figure 6-1 Star topology.......................................................................................................................................6-2Figure 6-2 Chain topology...................................................................................................................................6-3Figure 6-3 Tree topology......................................................................................................................................6-3Figure 6-4 IP hub topology..................................................................................................................................6-4Figure 6-5 Topology between the BBU3900 and the RRU.................................................................................6-5Figure 6-6 Topology between the BBU3900, RHUB3808, and pRRU with electrical ports..............................6-6Figure 6-7 Topology between the BBU3900 and pRRU with optical ports........................................................6-7Figure 6-8 BBU3900, RHUB, pRRU with electrical ports, and pRRU with optical ports in hybrid topology...............................................................................................................................................................................6-7Figure 6-9 BBU3900, RRU, and pRRU in hybrid topology................................................................................6-8

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Figure 9-1 OM subsystem of the NodeB..............................................................................................................9-2

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Tables

Table 4-1 Number of modules used for the BTS3900 in typical configurations.................................................4-2Table 4-2 Number of modules used for the BTS3900 in 4-way RX diversity.....................................................4-5Table 4-3 Number of modules used for the BTS3900 in TX diversity................................................................4-7Table 4-4 Number of modules used for the BTS3900 in 2 x 2 MIMO configuration..........................................4-9Table 4-5 Number of modules used for the BTS3900 in 2T4R configurations.................................................4-11Table 4-6 Number of modules used for the BTS3900A in typical configurations.............................................4-13Table 4-7 Number of modules used for the BTS3900A in 4-way RX diversity................................................4-15Table 4-8 Number of modules used for the BTS3900A in TX diversity...........................................................4-17Table 4-9 Number of modules used for the BTS3900A in 2 x 2 MIMO configuration.....................................4-20Table 4-10 Number of modules used for the BTS3900A in 2T4R configurations............................................4-22Table 4-11 Number of modules used for the BTS3900L in typical configurations...........................................4-24Table 4-12 Number of modules used for the BTS3900L in 4-way RX diversity..............................................4-26Table 4-13 Number of modules used for the BTS3900L in TX diversity..........................................................4-28Table 4-14 Number of modules used for the BTS3900L in 2 x 2 MIMO configuration...................................4-31Table 4-15 Number of modules used for the BTS3900L in 2T4R configurations.............................................4-33Table 4-16 Number of modules used for the DBS3900 in typical configurations.............................................4-35Table 4-17 Number of modules used for the DBS3900 in 4-way RX diversity................................................4-39Table 4-18 Number of modules used for the DBS3900 in TX diversity............................................................4-43Table 4-19 Number of modules used for the DBS3900 in 2 x 2 MIMO configuration.....................................4-47Table 4-20 Number of modules used for the DBS3900 in 2T4R configurations...............................................4-50Table 4-21 Number of modules used for the BTS3900C in typical configurations...........................................4-52Table 8-1 Surge protection specifications for the ports on the BTS3900............................................................8-1Table 8-2 Surge protection specifications for the ports on the BTS3900A..........................................................8-2Table 8-3 Surge protection specifications of the BTS3900L ports......................................................................8-2Table 8-4 Surge protection specifications for the ports on the BTS3900C..........................................................8-2Table 8-5 Surge protection specifications for the ports on the BBU3900............................................................8-2Table 8-6 Surge protection specifications for the ports on the RRU3804, RRU3801E, or RRU3806................8-3Table 8-7 Surge protection specifications for the ports on the RRU3804 (AC)..................................................8-4Table 8-8 Surge protection specifications for the ports on the RRU3808............................................................8-4Table 8-9 Surge protection specifications for the ports on the RXU...................................................................8-5Table 8-10 Surge protection specifications for the ports on the WRFU..............................................................8-5

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1 Changes in the NodeB Technical DescriptionThis section describes the changes in the NodeB Technical Description.

09 (2010-11-10)This is the eighth commercial release.Compared with 08 (2010-09-10), no information is added.Compared with 08 (2010-09-10), this issue modifies the following topics:l 6.2 Topologies on the CPRI InterfaceCompared with 08 (2010-09-10), no information is deleted.

08 (2010-09-10)This is the seventh commercial release.Compared with 07 (2010-06-30), this issue adds the following topics:l RRU3908 V2 SpecificationCompared with 07 (2010-06-30), this issue modifies the following topics:l 5 Monitoring Principles of the NodeBCompared with 07 (2010-06-30), no information is deleted.

07 (2010-06-30)This is the sixth commercial release.Compared with 06 (2010-04-30), this issue adds the following topics:l NodeB Product SpecificationCompared with 06 (2010-04-30), no information is modified.Compared with 06 (2010-04-30), no information is deleted.

06 (2010-04-30)This is the fifth commercial release.

NodeBTechnical Description 1 Changes in the NodeB Technical Description


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Compared with 05 (2009-12-10), this issue adds the following topics:l 4.1.5 Configuration in 2T4R of the BTS3900l 4.2.5 Configuration in 2T4R of the BTS3900Al 4.3.5 Configuration in 2T4R of the BTS3900Ll 4.4.5 Configuration in 2T4R of the DBS3900l Description of the RXUCompared with 05 (2009-12-10), no information is modified.Compared with 05 (2009-12-10), no information is deleted.

05 (2009-12-10)This is the fourth commercial release.Compared with 04 (2009-11-25), this issue adds the following topics:l Description of the BTS3900LCompared with 04 (2009-11-25), no information is modified.Compared with 04 (2009-11-25), no information is deleted.

04 (2009-11-25)This is the third commercial release.Compared with 03 (2009-08-20), this issue adds the following topics:l 2 Functions of the NodeBl 7 Clock Synchronization Mode of the NodeBl 3.4 Logical Structure of the RHUB3808l 3.5 Logical Structure of the pRRU3801l 8 Surge Protection Specifications for Ports on the NodeBCompared with 03 (2009-08-20), no information is modified.Compared with 03 (2009-08-20), no information is deleted.

03 (2009-08-20)This is the second commercial release.Compared with 02 (2009-03-20), this issue adds the following topics:l 4.1 Hardware Configurations of the BTS3900l 4.2 Hardware Configurations of the BTS3900Al 4.4 Hardware Configurations of the DBS3900l 4.5 Hardware Configuration of the BTS3900Cl Description of the RRU3808Compared with 02 (2009-03-20), no information is modified.Compared with 02 (2009-03-20), no information is deleted.

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02 (2009-03-20)This is the first commercial release.Compared with 01 (2008-12-15), no information is added.Compared with 01 (2008-12-15), no information is modified.Compared with 01 (2008-12-15), this issue deletes the following topics:The description of the MRFU is deleted.

01 (2008-12-15)This is the draft release.

NodeBTechnical Description 1 Changes in the NodeB Technical Description


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2 Functions of the NodeBDeveloped in compliance with the 3GPP R99/R4/R5/R6/R7/R8 FDD protocols, Huawei NodeBhas comprehensive functions and antenna system solutions.

NOTE

Only some functions and features of the NodeB are described. For other features, see the correspondingfeature parameter description.

Basic Functions2-antenna receive diversityThe 2-antenna receive diversity enables one signal to be received by two RX antennas andcombined after processing. As an anti-attenuation measure, 2-antenna receive diversityeffectively reduces the adverse impact by the attenuation. The receive diversity enhances thereceive capability of uplink channels. Compared with 1-antenna receive no diversity, 2-antennareceive diversity requires two times the number of RX channels.Cell Digital Combination and SplitCell digital combination and split refers to when a cell under the NodeB is split into multiplesectors to cover multiple areas through digital dividing and combining.This function is applicable in scenarios of indoor coverage and highway/railway coverage.Antennas of different sectors receive and transmit signals of the same cell, and the mappingbetween the RRU or pRRU and cells can be flexibly adjusted through software configuration.In addition, adjustment of hardware is not required in system capacity expansion and networkadjustment.The DBS3900 and iDBS3900 support the cell digital combination and split function.Fast Power Congestion Control (FCC)FCC refers to the congestion control on the NodeB side, which is a supplement to the RNCcongestion control.This function is used to quickly respond to and solve the overload problem, which prevents theoutput power from exceeding the maximum power range allowed by the hardware.Active TX Chain Gain Calibration

NodeBTechnical Description 2 Functions of the NodeB


2-1

The active TX chain gain calibration improves the accuracy of downlink TX power. The stabilityof TX power is ensured through monitoring and digital channel gain adjustment, thus improvingthe usage efficiency of the TX power.Intelligently Out of ServiceThe intelligently out of service function is introduced because services are disrupted due to lackof batteries or when the NodeB is reset.If the intelligently out of service function is enabled, the pilot TX power of the PCPICH of thecell can be set to gradually be reduced until UE is handed over other 2G or 3G cells. This canprevent call drops.Orthogonal Channel Noise SimulationThe orthogonal channel noise simulation can be conducted by setting up multiple downlinksimulation channels at the air interface to simulate multiple code interference.Single IP Address of the NodeBThis function enables the same IP address to be used by both the service channel and the OMchannel of the NodeB. This reduces IP address resource usage and simplifies IP address settings.The function of single IP address of the NodeB can be used in the following scenarios:l If the NodeB is configured with one WMPT: When the WMPT uses one or more IP

interfaces, the OM channel of the NodeB can use the same IP address as one of the IPinterfaces. If the NodeB uses the redundant OM channels, the IP addresses of the OMchannels can be the same as those of the two interfaces.

l If the NodeB is configured with one WMPT and one UTRP: When the WMPT and UTRPuse the inter-board MLPPP function, and one MLPPP group is bound with the WMPT, theNodeB provides only one MLPPP group externally, and the OM channel of the NodeB hasthe same IP address as the MLPPP group.

NOTE

This function is supported from V200R012.

Antenna System Solutionl The TMA is supported, and the Antenna Interface Standard Group (AISG) 1.1 and AISG

2.0 are complied.l The RET antenna is supported and remote calibration in batches is supported.l The antenna can be shared by 2G and 3G systems, and Same band Antenna Sharing Unit

(SASU) and Same band Antenna Sharing Adapter (SASA) can be applied in such scenarios.

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3 Logical Structure of the NodeBAbout This Chapter

This describes the logical structures of the BBU3900, RRU, WRFU, RHUB3808, andpRRU3801.

3.1 Logical Structure of the BBU3900The BBU3900, which features a modular design, consists of the control subsystem, transportsubsystem, baseband subsystem, and power module.3.2 Logical Structure of the RRUThe RRU, which features a modular design, consists of the interface module, transceiver (TRX),Power Amplifier (PA), filter, Low Noise Amplifier (LNA), and power module. In addition, theRRU3804 and RRU3808 can work with the RXU.3.3 Logical Structure of the WRFUThe WRFU, which features a modular design, consists of the interface module, transceiver(TRX), Power Amplifier (PA), filter, Low Noise Amplifier (LNA), extended interface, andpower module.3.4 Logical Structure of the RHUB3808This describes the logical structure of the RHUB3808. The RHUB3808 has a modular designand consists of the BB interface unit, combining and dividing unit, RRU interface unit, andpower supply unit.3.5 Logical Structure of the pRRU3801This describes the logical structure of the pRRU3801. The pRRU3801, which features a modulardesign, consists of the interface unit, TRX, High Power Amplifier (HPA), LNA, duplexer, andpower supply unit.

NodeBTechnical Description 3 Logical Structure of the NodeB


3-1

3.1 Logical Structure of the BBU3900The BBU3900, which features a modular design, consists of the control subsystem, transportsubsystem, baseband subsystem, and power module.Figure 3-1 shows the logical structure of the BBU3900.

Figure 3-1 Logical structure of the BBU3900

Control SubsystemThe functions of the control subsystem are implemented by the WMPT.The control subsystem performs centralized management of the entire NodeB in terms of OMand signaling processing and provides the system clock.l The OM functions involve equipment management, configuration management, alarm

management, software management, and commissioning management.l The signaling processing functions involve NodeB Application Part (NBAP) signaling

processing, Access Link Control Application Part (ALCAP) processing, Stream ControlTransmission Protocol (SCTP) processing, and logical resource management.

l The clock module provides the system clock for the NodeB. The clock module supportssynchronization with external clocks such as the Iub clock, GPS clock, BITS clock, and IPclock, which ensures that clock accuracy meets the requirements.

Baseband SubsystemThe functions of the baseband subsystem are implemented by the WBBP.The baseband subsystem processes UL and DL baseband signals. This subsystem consists ofthe following modules:l UL baseband data processing module: consists of the demodulation unit and the decoding

unit. In this module, despreading soft decision symbols is got after uplink baseband data isprocessed into access channel searching, access channel demodulation, and dedicated

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channel demodulation. The symbols are then sent to the RNC through the transportsubsystem after decoding and Frame Protocol (FP) processing.

l DL baseband data processing module: consists of the modulation unit and the encodingunit. The module receives the service data from the transport subsystem and sends theservice data to the FP processor for FP processing. The signals are finally sent to theinterface module after encoding, transport channel mapping, physical channel generating,framing, spreading, modulation, and power control combination.

In the baseband subsystem, the BBU3900 has an integrated CPRI interface module that connectsthe BBU3900 to the RF module.

Transport SubsystemThe functions of the transport subsystem are implemented by the WMPT and UTRP. Thetransport subsystem performs the following functions:l Provides ports for communication between the NodeB and the RNC.l Provides maintenance channels between the BBU3900 and the LMT or the M2000 to

operate and maintain the BBU3900.

Power ModuleThe power module converts +24 V DC or -48 V DC power into the power required by the boardsand provides external monitoring ports.

3.2 Logical Structure of the RRUThe RRU, which features a modular design, consists of the interface module, transceiver (TRX),Power Amplifier (PA), filter, Low Noise Amplifier (LNA), and power module. In addition, theRRU3804 and RRU3808 can work with the RXU.Figure 3-2 shows the logical structure of the RRU3804, RRU3801E, or RRU3806.

Figure 3-2 Logical structure of the RRU3804, RRU3801E, or RRU3806

Figure 3-3 shows the logical structure of the RRU3805, RRU3808, or RRU3908.



3-3

Figure 3-3 Logical structure of the RRU3805, RRU3808, or RRU3908

The RXU is the RF unit providing two RX channels. It can work with the RRU3804 andRRU3808.l When the RXU works with the RRU3804, 1T4R is supported.l When the RXU works with the RRU3808, 2T4R is supported.Figure 3-4 shows the logical structure of the RXU, where the RXU working with the RRU3804is taken as an example.

Figure 3-4 Logical structure of the RXU




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Interface ModuleThe interface module performs the following functions:l Receives the downlink baseband data from the BBU.l Transmits the uplink baseband data to the BBU.l Forwards data from the cascaded RRUs.

Transceiver (TRX)The TRX of the RRU3804, RRU3801E, RRU3806 provides two RX channels and one TXchannel for RF signals.The TRX of the RRU3805, RRU3808, RRU3908 provides two RX channels and two TXchannels for RF signals.l The TRX performs the following functions at the RX channels:

Down-converts the received signals to Intermediate Frequency (IF) signals. Amplifies the IF signals. Performs Analog-to-Digital Conversion (DAC). Performs digital down-conversion. Performs matched filtering. Performs Digital Automatic Gain Control (DAGC).

l The TRX performs the following functions at the TX channels: Shapes and filters downlink spread spectrum signals. Performs Digital-to-Analog Conversion (DAC). Up-converts IF signals to the TX band.

Power Amplifier (PA)The PA adopts the DPD and A-Doherty technologies to amplify the low-power RF signals fromthe TRX.

FilterThe filter of the RRU3804, RRU3801E, or RRU3806 consists of a duplex filter and an RX filter.The filter of the RRU3805, RRU3808, or RRU3908 consists of two duplex filters.The filter performs the following functions:l The duplex filter multiplexes one RX and one TX signals over RF channels so that they

can share one antenna channel. In addition, it filters RX and TX signals.l The RX filter filters one RX signal.

LNAThe LNA amplifies the signals received from the antenna system.



3-5

Power ModuleThe power module supplies power to other modules of the RRU.

3.3 Logical Structure of the WRFUThe WRFU, which features a modular design, consists of the interface module, transceiver(TRX), Power Amplifier (PA), filter, Low Noise Amplifier (LNA), extended interface, andpower module.Figure 3-5 shows the logical structure of the WRFU.

Figure 3-5 Logical structure of the WRFU

Interface ModuleThe interface module performs the following functions:l Receives the downlink baseband data from the BBU.l Transmits the uplink baseband data to the BBU.l Forwards data from the cascaded WRFUs.

Transceiver (TRX)The TRX provides two RX channels and one TX channel for RF signals.l The TRX performs the following functions at the RX channels:

Down-converts the received signals to Intermediate Frequency (IF) signals. Amplifies the IF signals. Performs Analog-to-Digital Conversion (DAC). Performs digital down-conversion. Performs matched filtering. Performs Digital Automatic Gain Control (DAGC).

l The TRX performs the following functions at the TX channels:




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Shapes and filters downlink spread spectrum signals. Performs Digital-to-Analog Conversion (DAC). Up-converts IF signals to the TX band.

Power Amplifier (PA)The PA adopts the DPD and A-Doherty technologies to amplify the low-power RF signals fromthe TRX.

FilterThe filters consist of a duplex filter and an RX filter. The filters perform the following functions:l The duplex filter multiplexes one RX and one TX signals over RF channels so that they

can share one antenna channel. In addition, it filters RX and TX signals.l The RX filter filters one RX signal.

LNAThe LNA amplifies the signals received from the antenna system.

Power ModuleThe power module supplies power to other modules of the WRFU.

3.4 Logical Structure of the RHUB3808This describes the logical structure of the RHUB3808. The RHUB3808 has a modular designand consists of the BB interface unit, combining and dividing unit, RRU interface unit, andpower supply unit.Figure 3-6 shows the logical structure of the RHUB3808.

Figure 3-6 Logical structure of the RHUB3808



3-7

The functions of each unit are as follows:l BB interface unit: Provides the transmission interface for the BBU3900.l Combining and dividing unit: Combines and divides the baseband IQ data and performs

the Digital Automatic Gain Control (DAGC) function.l RRU interface unit: Provides the transmission port and -48 V DC power port for the

pRRU3801 with electrical port.l Power supply unit: Supplies power to internal modules of the RHUB3808 and eight

pRRU3801s with electrical ports connected to the RHUB3808 when the unit obtains 110V AC input power from the external power system. This unit can also supply -48 V DCpower to the BBU3900 when the unit obtains 220 V AC input power from the externalpower system.

3.5 Logical Structure of the pRRU3801This describes the logical structure of the pRRU3801. The pRRU3801, which features a modulardesign, consists of the interface unit, TRX, High Power Amplifier (HPA), LNA, duplexer, andpower supply unit.Figure 3-7 and Figure 3-8 show the logical structures of the pRRU3801 with optical ports andthe pRRU3801 with electrical port.

Figure 3-7 Logical structure of the pRRU3801 with optical ports




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Figure 3-8 Logical structure of the pRRU3801 with electrical ports

The functions of each unit are as follows:l Interface unit:

provides the CPRI interface for the connection between the pRRU3801 with opticalports and the BBU3900; provides the RJ45 Ethernet port for supplying power for pRRU, and connecting the

pRRU3801 with electrical port and the RHUB3808;NOTE

l Through the interface unit, the pRRU3801 with optical ports can connect to the BBU3900 andcascade with another pRRU3801.

l Through the interface unit, the pRRU3801 with electrical port can connect to only theRHUB3808, and then the RHUB3808 can connect to the BBU3900 through the CPRI port.

l TRX: provides one RX channel and one TX channel, and processes the IF signals.l HPA: receives the low-power RF signals from the TRX and amplifies these signals.l LNA: amplifies the signals received by the antenna.l Duplexer: multiplexes the RX signals and TX signals. This enables the RX signals and TX

signals to share one antenna channel.l Power supply unit: distributes 48 V DC power in the pRRU3801.



3-9

4 Hardware Configuration of the NodeBAbout This Chapter

This describes the hardware configuration of the BTS3900, BTS3900A, BTS3900L,DBS3900, and BTS3900C.

4.1 Hardware Configurations of the BTS3900This describes the hardware configurations of the BTS3900 in typical configuration, 4-way RXdiversity, TX diversity, 2 x 2 MIMO, and 2T4R.4.2 Hardware Configurations of the BTS3900AThis describes the hardware configurations of the BTS3900A in typical configuration, 4-wayRX diversity, TX diversity, 2 x 2 MIMO, and 2T4R.4.3 Hardware Configurations of the BTS3900LThis describes the hardware configurations of the BTS3900L in typical configuration, 4-wayRX diversity, TX diversity, 2 x 2 MIMO, and 2T4R.4.4 Hardware Configurations of the DBS3900This describes the hardware configurations of the DBS3900 in typical configuration, 4-way RXdiversity, TX diversity, 2 x 2 MIMO, and 2T4R.4.5 Hardware Configuration of the BTS3900CThe maximum configuration that the BTS3900C supports is 1 x 3.

NodeBTechnical Description 4 Hardware Configuration of the NodeB


4-1

4.1 Hardware Configurations of the BTS3900This describes the hardware configurations of the BTS3900 in typical configuration, 4-way RXdiversity, TX diversity, 2 x 2 MIMO, and 2T4R.

4.1.1 Typical ConfigurationsThis describes the typical configurations of the BTS3900. The BTS3900 supports omni-directional, 2-sector, 3-sector, and 6-sector configurations. It also supports smooth capacityexpansion from 1 x 1 to 6 x 4 or 3 x 8.4.1.2 Configuration in 4-Way RX DiversityThe BTS3900 supports 4-way RX diversity.4.1.3 Configuration in TX DiversityThe BTS3900 supports TX diversity.4.1.4 Configuration in 2 x 2 MIMOThe BTS3900 supports the 2 x 2 MIMO configuration. 2 x 2 means this configuration has twotransmitting/receiving channels.4.1.5 Configuration in 2T4RThe BTS3900 supports the TX diversity and 4-way RX diversity (2T4R) at the same time.

4.1.1 Typical ConfigurationsThis describes the typical configurations of the BTS3900. The BTS3900 supports omni-directional, 2-sector, 3-sector, and 6-sector configurations. It also supports smooth capacityexpansion from 1 x 1 to 6 x 4 or 3 x 8.In typical configurations, the mandatory boards of the BTS3900 are the WMPT, WBBP, andWRFU. The WMPT and WBBP are installed in the BBU3900.The WBBPs of different specifications support three cells and six cells. The followingdescription takes the WBBP supporting six cells and the WRFU supporting 80 W/4 carriers asexamples to describe the typical configuration of the BTS3900.

Number of ModulesTable 4-1 lists the number of modules used for the BTS3900 in typical configurations.

Table 4-1 Number of modules used for the BTS3900 in typical configurationsConfigurationType

Number ofWMPTs

Number of WBBPs(Supporting SixCells)

Number of WRFUs(No TX Diversity)

3 x 1 1 1 33 x 2 1 1 33 x 3 1 2 33 x 4 1 2 3

4 Hardware Configuration of the NodeBNodeB



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NOTEN x M = sector x carrier. For example, 3 x 1 indicates that each of the three sectors has one carrier.

Installation SlotsFigure 4-1 shows the installation slots of the boards of the BTS3900 in typical configurations.

Figure 4-1 Installation slots of the boards of the BTS3900 in typical configurations

NOTE

It is recommended that the WBBP not using the CPRI interface not be installed in slot 2 or 3. For detailsabout the slots of the BBU3900, see the BBU3900 Hardware Description.

Cable ConnectionsFigure 4-2 and Figure 4-3 show the cable connections of the BTS3900, where the 3 x 1 and 3x 4 configurations are taken as an example respectively.

NOTE

A single sector is taken as an example to describe the cable connections.



4-3

Figure 4-2 Cable connections of the BTS3900 in 3 x 1 configuration

(1) RF jumper (2) CPRI electrical cable

Figure 4-3 Cable connections of the BTS3900 in 3 x 4 configuration





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4.1.2 Configuration in 4-Way RX DiversityThe BTS3900 supports 4-way RX diversity.In 4-way RX diversity, the mandatory boards of the BTS3900 are the WMPT, WBBP, andWRFU. The WMPT and WBBP are installed in the BBU3900.The WBBPs of different specifications support three cells and six cells. The followingdescription takes the WBBP supporting six cells and the WRFU supporting 80 W/4 carriers asexamples to describe the configuration of the BTS3900 in 4-way RX diversity.

Number of ModulesTable 4-2 lists the number of modules used for the BTS3900 in 4-way RX diversity.

Table 4-2 Number of modules used for the BTS3900 in 4-way RX diversityConfigurationType

Number ofWMPTs


Number of WRFUs

3 x 1 1 1 63 x 2 1 2 6

NOTE

In the case of 4-way economical mode, the WBBP that originally supports six cells can support only threecells; the processing capability of the WBBP that supports three cells remains unchanged.

Installation SlotsTable 4-2 shows the installation slots of the BTS3900 in 4-way RX diversity.

Figure 4-4 Installation slots of the BTS3900 in 4-way RX diversity

NOTE




4-5

Cable ConnectionsFigure 4-5 shows the cable connections of the BTS3900 in 4-way RX diversity, where the 3 x1 configuration is taken as an example.

NOTE


Figure 4-5 Cable connections of the BTS3900 in 4-way RX diversity


4.1.3 Configuration in TX DiversityThe BTS3900 supports TX diversity.In TX diversity, the mandatory boards of the BTS3900 are the WMPT, WBBP, and WRFU. TheWMPT and WBBP are installed in the BBU3900.The WBBPs of different specifications support three cells and six cells. The followingdescription takes the WBBP supporting six cells and the WRFU supporting 80 W/4 carriers asexamples to describe the configuration of the BTS3900 in TX diversity.

Number of ModulesTable 4-3 lists the number of modules used for the BTS3900 in TX diversity.




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Table 4-3 Number of modules used for the BTS3900 in TX diversity.ConfigurationType

Number ofWMPTs


Number of WRFUs

3 x 1 1 1 63 x 2 1 2 6

NOTE

In the case of TX diversity, the WBBP that originally supports six cells can support only three cells; theprocessing capability of the WBBP that supports three cells remains unchanged.

Installation SlotsFigure 4-6 shows the installation slots of the boards of the BTS3900 in TX diversity.

Figure 4-6 Installation slots of the boards of the BTS3900 in TX diversity

NOTE


Cable ConnectionsFigure 4-7 shows the cable connections of the BTS3900 in TX diversity, where the 3 x 1configuration is taken as an example.

NOTE

l A single sector is taken as an example to describe the cable connections.l Starting from the V200R012, the inter-RFU RF signal cable is not required for interconnection

between the WRFUs when the RF interconnection mode is configured through the software.



4-7

Figure 4-7 Cable connections of the BTS3900 in TX diversity

(1) RF jumper (2) Inter-RFU RF signal cable (3) CPRI electrical cable

4.1.4 Configuration in 2 x 2 MIMOThe BTS3900 supports the 2 x 2 MIMO configuration. 2 x 2 means this configuration has twotransmitting/receiving channels.In 2 x 2 MIMO configuration, the mandatory boards of the BTS3900 are the WMPT, WBBP,and WRFU. The WMPT and WBBP are installed in the BBU3900.The WBBPs of different specifications support three cells and six cells. The followingdescription takes the WBBP supporting six cells and the WRFU supporting 80 W/4 carriers asexamples to describe the 2 x 2 MIMO configuration of the BTS3900.

Number of ModulesTable 4-4 lists the number of modules used for the BTS3900 in 2 x 2 MIMO configuration.




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Table 4-4 Number of modules used for the BTS3900 in 2 x 2 MIMO configurationConfigurationType

Number ofWMPTs


Number of WRFUs

3 x 1 1 1 63 x 2 1 2 6

NOTE

In the case of 2 x 2 MIMO configuration, the WBBP that originally supports six cells can support onlythree cells; the processing capability of the WBBP that supports three cells remains unchanged.

Installation SlotsFigure 4-8 shows the installation slots of the boards of the BTS3900 in 2 x 2 MIMOconfiguration.

Figure 4-8 Installation slots of the boards of the BTS3900 in 2 x 2 MIMO configuration

NOTE


Cable ConnectionsFigure 4-9 shows the cable connections of the BTS3900 in 2 x 2 MIMO configuration, wherethe 3 x 1 configuration is taken as an example.

NOTE





4-9

Figure 4-9 Cable connections of the BTS3900 in 2 x 2 MIMO configuration


4.1.5 Configuration in 2T4RThe BTS3900 supports the TX diversity and 4-way RX diversity (2T4R) at the same time.In configurations of 2T4R, the mandatory boards of the BTS3900 are the WMPT, WBBP, andWRFU. The WMPT and WBBP are installed in the BBU3900.The WBBPs can support three cells or six cells according to their specifications. The followingdescription takes the WBBP supporting six cells and the WRFU supporting 80 W/4 carriers asexamples to describe the 2T4R configurations of the BTS3900.

Number of ModulesTable 4-5 lists the number of modules used for the BTS3900 in 2T4R configurations.




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Table 4-5 Number of modules used for the BTS3900 in 2T4R configurationsConfigurationType

Number ofWMPTs


Number of WRFUs

3 x 1 1 1 63 x 2 1 2 6

NOTE

In the case of 2T4R configuration, the WBBP that originally supports six cells can support only three cells;the processing capability of the WBBP that supports three cells remains unchanged.

Installation SlotsFigure 4-10 shows the installation slots of the boards of the BTS3900 in 2T4R configurations.

Figure 4-10 Installation slots of the boards of the BTS3900 in 2T4R configurations

NOTE


Cable ConnectionsFigure 4-11 shows the cable connections of the BTS3900 in 2T4R configuration, where the 3x 1 configuration is taken as an example.

NOTE




4-11

Figure 4-11 Cable connections of the BTS3900 in 2T4R configuration


4.2 Hardware Configurations of the BTS3900AThis describes the hardware configurations of the BTS3900A in typical configuration, 4-wayRX diversity, TX diversity, 2 x 2 MIMO, and 2T4R.

4.2.1 Typical ConfigurationsThis describes the typical configurations of the BTS3900A. The BTS3900A supports omni-directional, 2-sector, 3-sector, and 6-sector configurations. It also supports smooth capacityexpansion from 1 x 1 to 6 x 4 or 3 x 8.4.2.2 Configuration in 4-Way RX DiversityThe BTS3900A supports 4-way RX diversity.4.2.3 Configuration in TX DiversityThe BTS3900A supports TX diversity.4.2.4 Configuration in 2 x 2 MIMO




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The BTS3900A supports the 2 x 2 MIMO configuration. 2 x 2 means this configuration has twotransmitting and receiving channels.4.2.5 Configuration in 2T4RThe BTS3900A supports the TX diversity and 4-way RX diversity (2T4R) at the same time.

4.2.1 Typical ConfigurationsThis describes the typical configurations of the BTS3900A. The BTS3900A supports omni-directional, 2-sector, 3-sector, and 6-sector configurations. It also supports smooth capacityexpansion from 1 x 1 to 6 x 4 or 3 x 8.In typical configurations, the mandatory boards of the BTS3900A are the WMPT, WBBP, andWRFU. The WMPT and WBBP are installed in the BBU3900.The WBBPs of different specifications support three cells and six cells. The followingdescription takes the WBBP supporting six cells and the WRFU supporting 80 W/4 carriers asexamples to describe the typical configurations of the BTS3900A.

Number of ModulesTable 4-6 lists the number of modules used for the BTS3900A in typical configurations.

Table 4-6 Number of modules used for the BTS3900A in typical configurationsConfigurationType

Number ofWMPTs



3 x 1 1 1 33 x 2 1 1 33 x 3 1 2 33 x 4 1 2 3

NOTEN x M = sector x carrier. For example, 3 x 1 indicates that each of the three sectors has one carrier.

Installation SlotsFigure 4-12 shows the installation slots of the boards of the BTS3900A in typical configurations.

Figure 4-12 Installation slots of the boards of the BTS3900A in typical configurations



4-13

NOTE

It is recommended that the WBBP not using the CPRI interface not be installed in slots 2 or 3. For detailsabout the slots of the BBU3900, see the BBU3900 Hardware Description.

Cable ConnectionsFigure 4-13 and Figure 4-14 show the cable connections of the BTS3900A, where the 3 x 1and 3 x 4 configurations are taken as an example respectively.

NOTEA single sector is taken as an example to describe the cable connections.

Figure 4-13 Cable connections of the BTS3900A in 3 x 1 configuration





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Figure 4-14 Cable connections of the BTS3900A in 3 x 4 configuration


4.2.2 Configuration in 4-Way RX DiversityThe BTS3900A supports 4-way RX diversity.In 4-way RX diversity, the mandatory boards of the BTS3900A are the WMPT, WBBP, andWRFU. The WMPT and WBBP are installed in the BBU3900.The WBBPs of different specifications support three cells and six cells. The followingdescription takes the WBBP supporting six cells and the WRFU supporting 80 W/4 carriers asexamples to describe the configuration of the BTS3900A in 4-way RX diversity.

Number of ModulesTable 4-7 lists the number of modules used for the BTS3900A in 4-way RX diversity.

Table 4-7 Number of modules used for the BTS3900A in 4-way RX diversityConfigurationType

Number ofWMPTs


Number of WRFUs

3 x 1 1 1 63 x 2 1 2 6



4-15

NOTEIn the case of 4-way economical mode, the WBBP that originally supports six cells can support only threecells; the processing capability of the WBBP that supports three cells remains unchanged.

Installation SlotsTable 4-7 shows the installation slots of the BTS3900A in 4-way RX diversity.

Figure 4-15 Installation slots of the BTS3900A in 4-way RX diversity

NOTE


Cable ConnectionsFigure 4-16 shows the cable connections of the BTS3900A in 4-way RX diversity, where the3 x 1 configuration is taken as an example.

NOTE





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Figure 4-16 Cable connections of the BTS3900A in 4-way RX diversity


4.2.3 Configuration in TX DiversityThe BTS3900A supports TX diversity.In TX diversity, the mandatory boards of the BTS3900A are the WMPT, WBBP, and WRFU.The WMPT and WBBP are installed in the BBU3900.The WBBPs of different specifications support three cells and six cells. The followingdescription takes the WBBP supporting six cells and the WRFU supporting 80 W/4 carriers asexamples to describe the configuration of the BTS3900A in TX diversity.

Number of ModulesTable 4-8 lists the number of modules used for the BTS3900A in TX diversity.

Table 4-8 Number of modules used for the BTS3900A in TX diversity.ConfigurationType

Number ofWMPTs


Number of WRFUs

3 x 1 1 1 63 x 2 1 2 6



4-17

NOTEIn the case of TX diversity, the WBBP that originally supports six cells can support only three cells; theprocessing capability of the WBBP that supports three cells remains unchanged.

Installation SlotsFigure 4-17 shows the installation slots of the boards of the BTS3900A in TX diversity.

Figure 4-17 Installation slots of the boards of the BTS3900A in TX diversity

NOTE


Cable ConnectionsFigure 4-18 shows the cable connections of the BTS3900A in TX diversity, where the 3 x 1configuration is taken as an example.

NOTE






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Figure 4-18 Cable connections of the BTS3900A in TX diversity


4.2.4 Configuration in 2 x 2 MIMOThe BTS3900A supports the 2 x 2 MIMO configuration. 2 x 2 means this configuration has twotransmitting and receiving channels.In 2 x 2 MIMO configuration, the mandatory boards of the BTS3900A are the WMPT, WBBP,and WRFU. The WMPT and WBBP are installed in the BBU3900.The WBBPs can support three cells or six cells according to their specifications. The followingdescription takes the WBBP supporting six cells and the WRFU supporting 80 W/4 carriers asexamples to describe the 2 x 2 MIMO configuration of the BTS3900A.

Number of ModulesTable 4-9 lists the number of modules used for the BTS3900A in 2 x 2 MIMO configuration.



4-19

Table 4-9 Number of modules used for the BTS3900A in 2 x 2 MIMO configurationConfigurationType

Number ofWMPTs


Number of WRFUs

3 x 1 1 1 63 x 2 1 2 6

NOTE


Installation SlotsFigure 4-19 shows the installation slots of the boards of the BTS3900A in 2 x 2 MIMOconfiguration.

Figure 4-19 Installation slots of the boards of the BTS3900A in 2 x 2 MIMO configuration

NOTE


Cable ConnectionsFigure 4-20 shows the cable connections of the BTS3900A in 2 x 2 MIMO configuration, wherethe 3 x 1 configuration is taken as an example.

NOTE






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Figure 4-20 Cable connections of the BTS3900A in 2 x 2 MIMO configuration


4.2.5 Configuration in 2T4RThe BTS3900A supports the TX diversity and 4-way RX diversity (2T4R) at the same time.In configurations of 2T4R, the mandatory boards of the BTS3900A are the WMPT, WBBP, andWRFU. The WMPT and WBBP are installed in the BBU3900.The WBBPs can support three cells or six cells according to their specifications. The followingdescription takes the WBBP supporting six cells and the WRFU supporting 80 W/4 carriers asexamples to describe the 2T4R configurations of the BTS3900A.

Number of ModulesTable 4-10 lists the number of modules used for the BTS3900A in 2T4R configurations.



4-21

Table 4-10 Number of modules used for the BTS3900A in 2T4R configurationsConfigurationType

Number ofWMPTs


Number of WRFUs

3 x 1 1 1 63 x 2 1 2 6

NOTE


Installation SlotsFigure 4-21 shows the installation slots of the boards of the BTS3900A in 2T4R configurations.

Figure 4-21 Installation slots of the boards of the BTS3900A in 2T4R configurations

NOTE


Cable ConnectionsFigure 4-22 shows the cable connections of the BTS3900A in 2T4R configuration, where the3 x 1 configuration is taken as an example.

NOTE





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Figure 4-22 Cable connections of the BTS3900A in 2T4R configuration


4.3 Hardware Configurations of the BTS3900LThis describes the hardware configurations of the BTS3900L in typical configuration, 4-wayRX diversity, TX diversity, 2 x 2 MIMO, and 2T4R.

4.3.1 Typical ConfigurationsThis describes the typical configurations of the BTS3900L. The BTS3900L supports omni-directional, 2-sector, 3-sector, and 6-sector configurations. The maximum configuration that theBTS3900L supports is 6 x 4 or 12 x 2. The BTS3900L is mainly applicable to multi-modescenarios.4.3.2 Configuration in 4-Way RX DiversityThe BTS3900L supports 4-way RX diversity.4.3.3 Configuration in TX DiversityThe BTS3900L supports TX diversity.4.3.4 Configuration in 2 x 2 MIMO



4-23

The BTS3900L supports the 2 x 2 MIMO configuration. 2 x 2 means this configuration has twotransmitting/receiving channels.4.3.5 Configuration in 2T4RThe BTS3900L supports the TX diversity and 4-way RX diversity (2T4R) at the same time.

4.3.1 Typical ConfigurationsThis describes the typical configurations of the BTS3900L. The BTS3900L supports omni-directional, 2-sector, 3-sector, and 6-sector configurations. The maximum configuration that theBTS3900L supports is 6 x 4 or 12 x 2. The BTS3900L is mainly applicable to multi-modescenarios.In typical configurations, the mandatory boards of the BTS3900L are the WMPT, WBBP, andWRFU. The WMPT and WBBP are installed in the BBU3900.The WBBPs of different specifications support three cells and six cells. The followingdescription takes the WBBP supporting six cells and the WRFU supporting 80 W/4 carriers asexamples to describe the typical configurations of the BTS3900L.

Number of ModulesTable 4-11 lists the number of modules used for the BTS3900L in typical configurations.

Table 4-11 Number of modules used for the BTS3900L in typical configurationsConfigurationType

Number ofWMPTs



3 x 1 1 1 33 x 2 1 1 33 x 3 1 2 33 x 4 1 2 3

NOTE

N x M = sector x carrier. For example, 3 x 1 indicates that each of the three sectors has one carrier.

Installation SlotsFigure 4-23 shows the installation slots of the boards of the BTS3900L in typical configurations.




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Figure 4-23 Installation slots of the boards of the BTS3900L in typical configurations

NOTE

It is recommended that the WBBP not using the CPRI interface not be installed in slots 2 or 3. For detailsabout the slots of the BBU3900, see the BBU3900 Hardware Description.

Cable ConnectionsFigure 4-24 and Figure 4-25 show the cable connections of the BTS3900L, where the 3 x 1 and3 x 4 configurations are taken as an example respectively.

NOTE


Figure 4-24 Cable connections of the BTS3900L in 3 x 1 configuration




4-25

Figure 4-25 Cable connections of the BTS3900L in 3 x 4 configuration


4.3.2 Configuration in 4-Way RX DiversityThe BTS3900L supports 4-way RX diversity.In 4-way RX diversity, the mandatory boards of the BTS3900L are the WMPT, WBBP, andWRFU. The WMPT and WBBP are installed in the BBU3900.The WBBPs of different specifications support three cells and six cells. The followingdescription takes the WBBP supporting six cells and the WRFU supporting 80 W/4 carriers asexamples to describe the configuration of the BTS3900L in 4-way RX diversity.

Number of ModulesTable 4-12 lists the number of modules used for the BTS3900L in 4-way RX diversity.

Table 4-12 Number of modules used for the BTS3900L in 4-way RX diversityConfigurationType

Number ofWMPTs


Number of WRFUs

3 x 1 1 1 63 x 2 1 2 6




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NOTE

In the case of 4-way economical mode, the WBBP that originally supports six cells can support only threecells; the processing capability of the WBBP that supports three cells remains unchanged.

Installation SlotsTable 4-12 shows the installation slots of the BTS3900L in 4-way RX diversity.

Figure 4-26 Installation slots of the BTS3900L in 4-way RX diversity

NOTE


Cable ConnectionsFigure 4-27 shows the cable connections of the BTS3900L in 4-way RX diversity, where the 3x 1 configuration is taken as an example.

NOTE




4-27

Figure 4-27 Cable connections of the BTS3900L in 4-way RX diversity


4.3.3 Configuration in TX DiversityThe BTS3900L supports TX diversity.In TX diversity, the mandatory boards of the BTS3900L are the WMPT, WBBP, and WRFU.The WMPT and WBBP are installed in the BBU3900.The WBBPs of different specifications support three cells and six cells. The followingdescription takes the WBBP supporting six cells and the WRFU supporting 80 W/4 carriers asexamples to describe the configuration of the BTS3900L in TX diversity.

Number of ModulesTable 4-13 lists the number of modules used for the BTS3900L in TX diversity.

Table 4-13 Number of modules used for the BTS3900L in TX diversity.ConfigurationType

Number ofWMPTs


Number of WRFUs

3 x 1 1 1 63 x 2 1 2 6




Issue 09 (20101110)

NOTEIn the case of TX diversity, the WBBP that originally supports six cells can support only three cells; theprocessing capability of the WBBP that supports three cells remains unchanged.

Installation SlotsFigure 4-28 shows the installation slots of the boards of the BTS3900L in TX diversity.

Figure 4-28 Installation slots of the boards of the BTS3900L in TX diversity

NOTE


Cable ConnectionsFigure 4-29 shows the cable connections of the BTS3900L in TX diversity, where the 3 x 1configuration is taken as an example.

NOTE





4-29

Figure 4-29 Cable connections of the BTS3900L in TX diversity


4.3.4 Configuration in 2 x 2 MIMOThe BTS3900L supports the 2 x 2 MIMO configuration. 2 x 2 means this configuration has twotransmitting/receiving channels.In 2 x 2 MIMO configuration, the mandatory boards of the BTS3900L are the WMPT, WBBP,and WRFU. The WMPT and WBBP are installed in the BBU3900.The WBBPs can support three cells or six cells according to their specifications. The followingdescription takes the WBBP supporting six cells and the WRFU supporting 80 W/4 carriers asexamples to describe the 2 x 2 MIMO configuration of the BTS3900L.

Number of ModulesTable 4-14 lists the number of modules used for the BTS3900L in 2 x 2 MIMO configuration.




Issue 09 (20101110)

Table 4-14 Number of modules used for the BTS3900L in 2 x 2 MIMO configurationConfigurationType

Number ofWMPTs


Number of WRFUs

3 x 1 1 1 63 x 2 1 2 6

NOTE


Installation SlotsFigure 4-30 shows the installation slots of the boards of the BTS3900L in 2 x 2 MIMOconfiguration.

Figure 4-30 Installation slots of the boards of the BTS3900L in 2 x 2 MIMO configuration

NOTE


Cable ConnectionsFigure 4-31 shows the cable connections of the BTS3900L in 2 x 2 MIMO configuration, wherethe 3 x 1 configuration is taken as an example.

NOTE





4-31

Figure 4-31 Cable connections of the BTS3900L in 2 x 2 MIMO configuration


4.3.5 Configuration in 2T4RThe BTS3900L supports the TX diversity and 4-way RX diversity (2T4R) at the same time.In configurations of 2T4R, the mandatory boards of the BTS3900L are the WMPT, WBBP, andWRFU. The WMPT and WBBP are installed in the BBU3900.The WBBPs can support three cells or six cells according to their specifications. The followingdescription takes the WBBP supporting six cells and the WRFU supporting 80 W/4 carriers asexamples to describe the 2T4R configurations of the BTS3900L.

Number of ModulesTable 4-15 lists the number of modules used for the BTS3900L in 2T4R configurations.




Issue 09 (20101110)

Table 4-15 Number of modules used for the BTS3900L in 2T4R configurationsConfigurationType

Number ofWMPTs


Number of WRFUs

3 x 1 1 1 63 x 2 1 2 6

NOTE


Installation SlotsFigure 4-32 shows the installation slots of the boards of the BTS3900L in 2T4R configurations.

Figure 4-32 Installation slots of the boards of the BTS3900L in 2T4R configurations

NOTE


Cable ConnectionsFigure 4-33 shows the cable connections of the BTS3900L in 2T4R configuration, where the 3x 1 configuration is taken as an example.

NOTE

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NodeB Technical Description(V200_09)

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