NodeB Technical Description(V200_05)

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NodeB

V200

Technical Description

Issue 05

Date 2009-12-10

Huawei Proprietary and Confidential

Copyright Huawei Technologies Co., Ltd.


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Huawei Technologies Co., Ltd. provides customers with comprehensive technical support and service. For any

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Copyright Huawei Technologies Co., Ltd. 2009. All rights reserved.

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All other trademarks and trade names mentioned in this document are the property of their respective holders.

Notice

The purchased products, services and features are stipulated by the contract made between Huawei and the

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

and recommendations in this document are provided "AS IS" without warranties, guarantees or representations

of any kind, either express or implied.

The information in this document is subject to change without notice. Every effort has been made in the

preparation of this document to ensure accuracy of the contents, but all statements, information, andrecommendations in this document do not constitute the warranty of any kind, express or implied.

Huawei Proprietary and Confidential

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Contents

About This Document.....................................................................................................................1

1 Changes in the NodeB Technical Description.....................................................................1-1

2 Functions of the NodeB.............................................................................................................2-1

3 Logical Structure of the NodeB...............................................................................................3-1

3.1 Logical Structure of the BBU3900..................................................................................................................3-2

3.2 Logical Structure of the RRU..........................................................................................................................3-3

3.3 Logical Structure of the WRFU......................................................................................................................3-5

3.4 Logical Structure of the RHUB3808...............................................................................................................3-7

3.5 Logical Structure of the pRRU3801................................................................................................................3-7

4 Hardware Configuration of the NodeB.................................................................................4-1

4.1 Hardware Configurations of the BTS3900......................................................................................................4-2

4.1.1 Typical Configurations...........................................................................................................................4-24.1.2 Configuration in 4-Way RX Diversity...................................................................................................4-5

4.1.3 Configuration in TX Diversity...............................................................................................................4-6

4.1.4 2 x 2 MIMO Configuration....................................................................................................................4-8

4.2 Hardware Configurations of the BTS3900A.................................................................................................4-10

4.2.1 Typical Configurations.........................................................................................................................4-11

4.2.2 Configuration in 4-Way RX Diversity.................................................................................................4-13

4.2.3 Configuration in TX Diversity.............................................................................................................4-15

4.2.4 2 x 2 MIMO Configuration..................................................................................................................4-17

4.3 Hardware Configurations of the BTS3900L.................................................................................................4-19

4.3.1 Typical Configurations.........................................................................................................................4-20




4.4 Hardware Configurations of the DBS3900...................................................................................................4-28

4.4.1 Typical Configuration..........................................................................................................................4-29




4.5 Hardware Configuration of the BTS3900C..................................................................................................4-40

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5 Monitoring Principles of the NodeB......................................................................................5-1

6 Topologies of the NodeB..........................................................................................................6-1

6.1 Topology on the Iub Interface.........................................................................................................................6-2

6.1.1 ATM-Based Topologies.........................................................................................................................6-2

6.1.2 IP-Based Topologies..............................................................................................................................6-4

6.2 Topology on the CPRI Interface.....................................................................................................................6-4

7 Clock Synchronization Mode of the NodeB.........................................................................7-1

8 Surge Protection Specifications for Ports on the NodeB....................................................8-1

9 Operation and Maintenance of the NodeB...........................................................................9-1

9.1 OM Modes of the NodeB................................................................................................................................9-2

9.2 OM Functions of the NodeB...........................................................................................................................9-3

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

Contents

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Figures

Figure 3-1 Logical structure of the BBU3900......................................................................................................3-2

Figure 3-2 Logical structure of the RRU3804 or RRU3801E..............................................................................3-3

Figure 3-3 Logical structure of the RRU3805 or RRU3808................................................................................3-4

Figure 3-4 Logical structure of the WRFU..........................................................................................................3-5

Figure 3-5 Logical structure of the RHUB3808...................................................................................................3-7

Figure 3-6 Logical structure of the pRRU3801 with optical ports.......................................................................3-8

Figure 3-7 Logical structure of the pRRU3801 with electrical ports...................................................................3-8

Figure 4-1 Installation slots of the boards of the BTS3900 in typical configurations.........................................4-3

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

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

Figure 4-4 Installation slots of the BTS3900 in 4-way RX diversity...................................................................4-5

Figure 4-5 Cable connections of the BTS3900 in 4-way RX diversity................................................................4-6

Figure 4-6 Installation slots of the boards of the BTS3900 in TX diversity........................................................4-7

Figure 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.................................4-9

Figure 4-9 Cable connections of the BTS3900 in 2 x 2 MIMO configuration........................................... .......4-10

Figure 4-10 Installation slots of the boards of the BTS3900A in typical configurations...................................4-11

Figure 4-11 Cable connections of the BTS3900A in 3 x 1 configuration..........................................................4-12

Figure 4-12 Cable connections of the BTS3900A in 3 x 4 configuration..........................................................4-13

Figure 4-13 Installation slots of the BTS3900A in 4-way RX diversity............................................................4-14

Figure 4-14 Cable connections of the BTS3900A in 4-way RX diversity.........................................................4-15

Figure 4-15 Installation slots of the boards of the BTS3900A in TX diversity.................................................4-16

Figure 4-16 Cable connections of the BTS3900A in TX diversity....................................................................4-17

Figure 4-17 Installation slots of the boards of the BTS3900A in 2 x 2 MIMO configuration...........................4-18

Figure 4-18 Cable connections of the BTS3900A in 2 x 2 MIMO configuration.............................................4-19

Figure 4-19 Installation slots of the boards of the BTS3900L in typical configurations...................................4-20

Figure 4-20 Cable connections of the BTS3900L in 3 x 1 configuration..........................................................4-21

Figure 4-21 Cable connections of the BTS3900L in 3 x 4 configuration..........................................................4-22

Figure 4-22 Installation slots of the BTS3900L in 4-way RX diversity............................................................4-23

Figure 4-23 Cable connections of the BTS3900L in 4-way RX diversity.........................................................4-24

Figure 4-24 Installation slots of the boards of the BTS3900L in TX diversity..................................................4-25

Figure 4-25 Cable connections of the BTS3900L in TX diversity....................................................................4-26

Figure 4-26 Installation slots of the boards of the BTS3900L in 2 x 2 MIMO configuration...........................4-27

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Figure 4-27 Cable connections of the BTS3900L in 2 x 2 MIMO configuration..............................................4-28

Figure 4-28 Cable connections of the DBS3900 in 3 x 1 configuration (configured with the RRU3804)........4-30




Figure 4-32 Cable connections of the DBS3900 in 4-way RX diversity (configured with the RRU3804).......4-34

Figure 4-33 Cable connections of the DBS3900 in 4-way RX diversity (configured with the RRU3808).......4-35

Figure 4-34 Cable connections of the DBS3900 in TX diversity (configured with the RRU3804)..................4-36

Figure 4-35 Cable connections of the DBS3900 in TX diversity (configured with the RRU3808)..................4-37

Figure 4-36 Cable connections of the DBS3900 in 2 x 2 MIMO configuration (configured with the RRU3804)

.............................................................................................................................................................................4-39

Figure 4-37 Cable connections of the DBS3900 in 2 x 2 MIMO configuration (configured with the RRU3808)

.............................................................................................................................................................................4-40

Figure 4-38 Cable connections of the BTS3900C in 1 x 3 configuration..........................................................4-41

Figure 5-1 Monitoring principles of the BTS3900...............................................................................................5-1

Figure 5-2 Monitoring principles of the BTS3900A............................................................................................5-2

Figure 5-3 Monitoring principles of the BTS3900L............................................................................................5-2

Figure 5-4 Monitoring principles of the DBS3900..............................................................................................5-3

Figure 6-1 Star topology.......................................................................................................................................6-2

Figure 6-2 Chain topology................................................................................................................................... 6-3

Figure 6-3 Tree topology......................................................................................................................................6-3

Figure 6-4 IP hub topology.................................................................................................................................. 6-4

Figure 6-5 Topology between the BBU3900 and the RRU................................................................................. 6-5

Figure 6-6 Topology through CAT5/6 Ethernet cables........................................................................................6-5

Figure 6-7 Topology through optical cables........................................................................................................ 6-6

Figure 6-8 Hybrid topology..................................................................................................................................6-6

Figure 6-9 Hybrid Topology between the RRU and the pRRU...........................................................................6-7

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

Figures

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Tables

Table 4-1 Number of modules used for the BTS3900 in typical configurations.................................................4-2

Table 4-2 Number of modules used for the BTS3900 in 4-way RX diversity.....................................................4-5

Table 4-3 Number of modules used for the BTS3900 in TX diversity................................................................4-7

Table 4-4 Number of modules used for the BTS3900 in 2 x 2 MIMO configuration..........................................4-9

Table 4-5 Number of modules used for the BTS3900A in typical configurations.............................................4-11

Table 4-6 Number of modules used for the BTS3900A in 4-way RX diversity................................................4-13

Table 4-7 Number of modules used for the BTS3900A in TX diversity...........................................................4-15

Table 4-8 Number of modules used for the BTS3900A in 2 x 2 MIMO configuration.....................................4-18

Table 4-9 Number of modules used for the BTS3900L in typical configurations.............................................4-20

Table 4-10 Number of modules used for the BTS3900L in 4-way RX diversity..............................................4-22

Table 4-11 Number of modules used for the BTS3900L in TX diversity..........................................................4-24

Table 4-12 Number of modules used for the BTS3900L in 2 x 2 MIMO configuration...................................4-27

Table 4-13 Number of modules used for the DBS3900 in typical configurations.............................................4-29

Table 4-14 Number of modules used for the DBS3900 in 4-way RX diversity................................................4-33Table 4-15 Number of modules used for the DBS3900 in TX diversity............................................................4-35

Table 4-16 Number of modules used for the DBS3900 in 2 x 2 MIMO configuration.....................................4-38

Table 4-17 Number of modules used for the BTS3900C in typical configurations...........................................4-40

Table 8-1 Surge protection specifications for the ports on the BTS3900............................................................8-1

Table 8-2 Surge protection specifications for the ports on the BTS3900A..........................................................8-2

Table 8-3 Surge protection specifications for the ports on the BTS3900L..........................................................8-2

Table 8-4 Surge protection specifications for the ports on the BTS3900C..........................................................8-2

Table 8-5 Surge protection specifications for the ports on the BBU3900..................................... .......................8-2

Table 8-6 Surge protection specifications for the ports on the RRU3804 or RRU3801E....................................8-3

Table 8-7 Surge protection specifications for the ports on the RRU3804 (AC)..................................................8-4

Table 8-8 Surge protection specifications for the ports on the RRU3808..................................... .......................8-4

Table 8-9 Surge protection specifications for the ports on the WRFU................................................................8-5

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About This Document

Purpose

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

maintenance, and reliability.

Product Versions

The following table lists the product versions related to this document.

Product Name Product Version

BTS3900 WCDMA (hereinafter referred toas BTS3900)

V200R011

V200R012

BTS3900A WCDMA (hereinafter referred

to as BTS3900A)

V200R011

V200R012

BTS3900L WCDMA (hereinafter referred

to as BTS3900L)

V200R012

DBS3900 WCDMA (hereinafter referred to

as DBS3900)

V200R011

V200R012

iDBS3900 WCDMA (hereinafter referred

to as iDBS3900)

V200R011

V200R012

BTS3900C WCDMA (hereinafter referred

to as BTS3900C)

V200R011

V200R012

Intended Audience

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This document is intended for:

l Network planners

l Field engineers

l System engineers

Change History

For changes in the document, see 1 Changes in the NodeB Technical Description.

Organization

1 Changes in the NodeB Technical Description

This describes the changes in theNodeB Technical Description.

2 Functions of the NodeB

Developed in compliance with the 3GPP R99/R4/R5/R6/R7/R8 FDD protocols, Huawei NodeB

has comprehensive functions and antenna system solutions.

3 Logical Structure of the NodeB

This describes the logical structures of the BBU3900, RRU, WRFU, RHUB3808, and

pRRU3801.

4 Hardware Configuration of the NodeB

This describes the hardware configuration of the BTS3900, BTS3900A, BTS3900L,

DBS3900, and BTS3900C.

5 Monitoring Principles of the NodeB

This describes the monitoring principles of the BTS3900, BTS3900A, BTS3900L, and

DBS3900.

6 Topologies of the NodeB

This describes the topologies of the NodeB, which consists of the networking on the Iub interface

and networking on the CPRI interface.

7 Clock Synchronization Mode of the NodeB

The 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 NodeB

This describes the surge protection specifications for the ports on the BTS3900, BTS3900A,

BTS3900L, BTS3900C, BBU3900, RRU, and WRFU.

9 Operation and Maintenance of the NodeB

The 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.

Change History

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10 Reliability of the NodeB

The 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 of

modules and to reduce the number of parts, thus significantly improving the system reliability.

Conventions

Symbol Conventions

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

Symbol Description

Indicates a hazard with a high level of risk, which if not

avoided,will result in death or serious injury.

Indicates a hazard with a medium or low level of risk, which

if not avoided, could result in minor or moderate injury.

Indicates a potentially hazardous situation, which if not

avoided,could result in equipment damage, data loss,

performance degradation, or unexpected results.

Indicates a tip that may help you solve a problem or save

time.

Provides additional information to emphasize or supplement

important points of the main text.

General Conventions

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

Convention Description

Times New Roman Normal paragraphs are in Times New Roman.

Boldface Names of files, directories, folders, and users are inboldface. For example, log in as userroot.

Italic Book titles are in italics.

Courier New Examples of information displayed on the screen are in

Courier New.

Command Conventions

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

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Boldface The keywords of a command line are in boldface.

Italic Command arguments are in italics.

[ ] Items (keywords or arguments) in brackets [ ] are optional.

{ 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 all

items can be selected.

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

GUI Conventions

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


Boldface Buttons, menus, parameters, tabs, window, and dialog titles

are in boldface. For example, clickOK.

> Multi-level menus are in boldface and separated by the ">"

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

Keyboard Operations

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

Format Description

Key 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 Operations

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

Organization

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Action Description

Click Select and release the primary mouse button without moving

the pointer.

Double-click Press the primary mouse button twice continuously andquickly without moving the pointer.

Drag Press and hold the primary mouse button and move the

pointer to a certain position.

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

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 BTS3900L

04 (2009-11-25)

This is the third commercial release.


l 2 Functions of the NodeB

l 7 Clock Synchronization Mode of the NodeB

l 3.4 Logical Structure of the RHUB3808

l 3.5 Logical Structure of the pRRU3801

l 8 Surge Protection Specifications for Ports on the NodeB

03 (2009-08-20)

This is the second commercial release.


l 4.1 Hardware Configurations of the BTS3900

l 4.2 Hardware Configurations of the BTS3900A

l 4.4 Hardware Configurations of the DBS3900

l 4.5 Hardware Configuration of the BTS3900C

l Description of the RRU3808

02 (2009-03-20)

This is the first commercial release.

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Compared with 01 (2008-12-15), this issue incorporates the following changes:

The description of the MRFU is deleted.

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

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 NodeB

has comprehensive functions and antenna system solutions.

NOTE

Only some functions and features of the NodeB are described. For other features, see the corresponding

feature parameter description.

Basic Functions

2-antenna receive diversity

The 2-antenna receive diversity enables one signal to be received by two RX antennas and

combined after processing. As an anti-attenuation measure, 2-antenna receive diversityeffectively reduces the adverse impact by the attenuation. The receive diversity enhances the

receive capability of uplink channels. Compared with 1-antenna receive no diversity, 2-antenna

receive diversity requires two times the number of RX channels.

Cell Digital Combination and Split

Cell digital combination and split refers to when a cell under the NodeB is split into multiple

sectors to cover multiple areas through digital dividing and combining.

This function is applicable in scenarios of indoor coverage and highway and railway coverage.

Antennas of different sectors receive and transmit signals of the same cell, and the mapping

between 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 network

adjustment.

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 RNC

congestion control.

This function is used to quickly respond to and solve the overload problem, which prevents the

output power from exceeding the maximum power range allowed by the hardware.

Active TX Chain Gain Calibration

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The active TX chain gain calibration improves the accuracy of downlink TX power. The stability

of TX power is ensured through monitoring and digital channel gain adjustment, thus improving

the usage efficiency of the TX power.

Intelligently Out of Service

The intelligently out of service function is introduced because services are disrupted due to lack

of batteries or NodeB reset.

If the intelligently out of service function is enabled, the pilot TX power of the PCPICH of the

cell can be set to smooth reduction until UE is handed over other 2G or 3G cells. This can prevent

call drops.

Orthogonal Channel Noise Simulation

The orthogonal channel noise simulation can be conducted by setting up multiple downlink

simulation channels at the air interface to simulate multiple code interference.

Single IP Address of the NodeB

This function enables one IP address to be used by both the service channel and OM channel 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 IP

interfaces. If the NodeB uses the redundant OM channels, the IP addresses of the OM

channels 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 UTRP

use the inter-board MLPPP function, and one MLPPP group is bound with the WMPT, the

NodeB 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 Solution

l 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.

2 Functions of the NodeB

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3 Logical Structure of the NodeBAbout This Chapter

This describes the logical structures of the BBU3900, RRU, WRFU, RHUB3808, and

pRRU3801.

3.1 Logical Structure of the BBU3900

The BBU3900, which features a modular design, consists of the control subsystem, transport

subsystem, baseband subsystem, and power module.

3.2 Logical Structure of the RRU

The RRU, which features a modular design, consists of the interface module, transceiver (TRX),

Power Amplifier (PA), filter, Low Noise Amplifier (LNA), and power module.

3.3 Logical Structure of the WRFU

The WRFU, which features a modular design, consists of the interface module, transceiver

(TRX), Power Amplifier (PA), filter, Low Noise Amplifier (LNA), extended interface, and

power module.

3.4 Logical Structure of the RHUB3808

This describes the logical structure of the RHUB3808. The RHUB3808 has a modular design

and consists of the BB interface unit, combining and dividing unit, RRU interface unit, and

power supply unit.

3.5 Logical Structure of the pRRU3801

This describes the logical structure of the pRRU3801. The pRRU3801, which features a modular

design, consists of the interface unit, TRX, High Power Amplifier (HPA), LNA, duplexer, and

power supply unit.

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3.1 Logical Structure of the BBU3900

The BBU3900, which features a modular design, consists of the control subsystem, transport

subsystem, baseband subsystem, and power module.

Figure 3-1 shows the logical structure of the BBU3900.

Figure 3-1 Logical structure of the BBU3900

Control Subsystem

The functions of the control subsystem are implemented by the WMPT.

The control subsystem performs centralized management of the entire NodeB in terms of OM

and 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 Control

Transmission 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 IP

clock, which ensures that clock accuracy meets the requirements.

Baseband Subsystem

The functions of the baseband subsystem are implemented by the WBBP.

The baseband subsystem processes UL and DL baseband signals. This subsystem consists of

the following modules:

l UL baseband data processing module: consists of the demodulation unit and the decoding

unit. In this module, uplink baseband data is processed into despreading soft decisionsymbols after access channel searching, access channel demodulation, and dedicated


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channel demodulation. The symbols are then sent to the RNC through the transport

subsystem after decoding and Frame Protocol (FP) processing.

l DL baseband data processing module: consists of the modulation unit and the encoding

unit. The module receives the service data from the transport subsystem and sends the

service 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 connects

the BBU3900 to the RF module.

Transport Subsystem

The functions of the transport subsystem are implemented by the WMPT and UTRP. The

transport 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 Module

The power module converts +24 V DC or -48 V DC power into the power required by the boards

and provides external monitoring ports.

3.2 Logical Structure of the RRU

The RRU, which features a modular design, consists of the interface module, transceiver (TRX),Power Amplifier (PA), filter, Low Noise Amplifier (LNA), and power module.

Figure 3-2 shows the logical structure of the RRU3804 or RRU3801E.

Figure 3-2 Logical structure of the RRU3804 or RRU3801E

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

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Figure 3-3 Logical structure of the RRU3805 or RRU3808

Interface Module

The 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 or RRU3801E provides two RX channels and one TX channel for

RF signals.

The TRX of the RRU3805 or RRU3808 provides two RX channels and two TX channels 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:

Shaping and filtering of downlink spread spectrum signals

Performs Digital-to-Analog Conversion (DAC).

Up-converts IF signals to the TX band.


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Power Amplifier (PA)

The PA adopts the DPD and A-Doherty technologies to amplify the low-power RF signals from

the TRX.

Filter

The filter of the RRU3804 or RRU3801E consists of a duplex filter and an RX filter.

The filter of the RRU3805 or RRU3808 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.

LNA

The LNA amplifies the signals received from the antenna system.

Power Module

The power module supplies power to other modules of the RRU.

3.3 Logical Structure of the WRFU

The WRFU, which features a modular design, consists of the interface module, transceiver

(TRX), Power Amplifier (PA), filter, Low Noise Amplifier (LNA), extended interface, and

power module.

Figure 3-4 shows the logical structure of the WRFU.

Figure 3-4 Logical structure of the WRFU

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Interface Module

The 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:

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 from

the TRX.

Filter

The 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.

LNA

The LNA amplifies the signals received from the antenna system.

Power Module

The power module supplies power to other modules of the WRFU.


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3.4 Logical Structure of the RHUB3808

This describes the logical structure of the RHUB3808. The RHUB3808 has a modular design

and consists of the BB interface unit, combining and dividing unit, RRU interface unit, and

power supply unit.

Figure 3-5 shows the logical structure of the RHUB3808.

Figure 3-5 Logical structure of the RHUB3808

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 DC

power to the BBU3900 when the unit obtains 220 V AC input power from the external

power system.

3.5 Logical Structure of the pRRU3801

This describes the logical structure of the pRRU3801. The pRRU3801, which features a modular

design, consists of the interface unit, TRX, High Power Amplifier (HPA), LNA, duplexer, and

power supply unit.

Figure 3-6 and Figure 3-7 show the logical structures of the pRRU3801 with optical ports andthe pRRU3801 with electrical port.

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Figure 3-6 Logical structure of the pRRU3801 with optical ports

Figure 3-7 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

optical ports and theBBU3900, and provides the Ethernet port for the connection between

the pRRU3801 with electrical port and the RHUB3808.

NOTE

l Through the interface unit, the pRRU3801 with optical ports can connect to the BBU3900 and

cascade with another pRRU3801.

l Through the interface unit, the pRRU3801 with electrical port can connect to only the

RHUB3808, and then the RHUB3808 can connect to theBBU3900 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.


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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.

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4Hardware 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 BTS3900

This describes the hardware configurations of the BTS3900 in typical configuration, 4-way RX

diversity, TX diversity, and 2 x 2 MIMO.

4.2 Hardware Configurations of the BTS3900A

This describes the hardware configurations of the BTS3900A in typical configuration, 4-way

RX diversity, TX diversity, and 2 x 2 MIMO.

4.3 Hardware Configurations of the BTS3900L

This describes the hardware configurations of the BTS3900L in typical configuration, 4-way


4.4 Hardware Configurations of the DBS3900

This describes the hardware configurations of the DBS3900 in typical configuration, 4-way RX


4.5 Hardware Configuration of the BTS3900C

The maximum configuration that the BTS3900C supports is 1 x 3.

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4.1 Hardware Configurations of the BTS3900

This describes the hardware configurations of the BTS3900 in typical configuration, 4-way RX


4.1.1 Typical Configurations

This describes the typical configurations of the BTS3900. The BTS3900 supports omni-

directional, 2-sector, 3-sector, and 6-sector configurations. It also supports smooth capacity

expansion from 1 x 1 to 6 x 4 or 3 x 8.

4.1.2 Configuration in 4-Way RX Diversity

The BTS3900 supports 4-way RX diversity.

4.1.3 Configuration in TX Diversity

The BTS3900 supports TX diversity.

4.1.4 2 x 2 MIMO Configuration

The BTS3900 supports the 2 x 2 MIMO configuration.


This describes the typical configurations of the BTS3900. The BTS3900 supports omni-



In typical configurations, 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 as

examples to describe the typical configuration of the BTS3900.

Number of Modules

Table 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 configurations

ConfigurationType

Number ofWMPTs

Number of WBBPs(Supporting Six

Cells)

Number of WRFUs(No TX Diversity)

3 x 1 1 1 3

3 x 2 1 1 3

3 x 3 1 2 3

3 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.


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Installation Slots

Figure 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 details

about the slots of the BBU3900, see the BBU3900 Hardware Description.

Cable Connections

Figure 4-2 and Figure 4-3 show the cable connections of the BTS3900, where the 3 x 1 and 3

x 4 configurations are taken as an example respectively.

NOTE

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

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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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The BTS3900 supports 4-way RX diversity.

In 4-way RX diversity, the mandatory boards of the BTS3900 are the WMPT, WBBP, and


The WBBPs of different specifications support three cells and six cells. The following

description takes the WBBP supporting six cells and the WRFU supporting 80 W/4 carriers as

examples to describe the configuration of the BTS3900 in 4-way RX diversity.

Number of Modules

Table 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 diversity

ConfigurationType

Number ofWMPTs

Number of WBBPs(Supporting SixCells)

Number of WRFUs

3 x 1 1 1 6

3 x 2 1 2 6

NOTE

In the case of 4-way economical mode, 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 Slots

Table 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

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.

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Cable Connections

Figure 4-5 shows the cable connections of the BTS3900 in 4-way RX diversity, where the 3 x

1 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. The

WMPT and WBBP are installed in the BBU3900.



examples to describe the configuration of the BTS3900 in TX diversity.

Number of Modules

Table 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 6

3 x 2 1 2 6

NOTE

In the case of TX diversity, 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 4-6 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 Connections

Figure 4-7 shows the cable connections of the BTS3900 in TX diversity, where the 3 x 1

configuration 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.

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

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


The BTS3900 supports the 2 x 2 MIMO configuration.

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.



examples to describe the 2 x 2 MIMO configuration of the BTS3900.

Number of Modules

Table 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 configuration

ConfigurationType

Number ofWMPTs


Number of WRFUs

3 x 1 1 1 6

3 x 2 1 2 6

NOTE

In the case of 2 x 2 MIMO 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 4-8 shows the installation slots of the boards of the BTS3900 in 2 x 2 MIMO

configuration.

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

NOTE



Cable Connections

Figure 4-9 shows the cable connections of the BTS3900 in 2 x 2 MIMO configuration, where

the 3 x 1 configuration is taken as an example.

NOTE




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


4.2 Hardware Configurations of the BTS3900A

This describes the hardware configurations of the BTS3900A in typical configuration, 4-way



This describes the typical configurations of the BTS3900A. The BTS3900A supports omni-




The BTS3900A supports 4-way RX diversity.


The BTS3900A supports TX diversity.

4.2.4 2 x 2 MIMO ConfigurationThe BTS3900A supports the 2 x 2 MIMO configuration.


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This describes the typical configurations of the BTS3900A. The BTS3900A supports omni-



In typical configurations, the mandatory boards of the BTS3900A are the WMPT, WBBP, and




examples to describe the typical configurations of the BTS3900A.

Number of Modules

Table 4-5 lists the number of modules used for the BTS3900A in typical configurations.

Table 4-5 Number of modules used for the BTS3900A in typical configurations

ConfigurationType

Number ofWMPTs



3 x 1 1 1 3

3 x 2 1 1 3

3 x 3 1 2 3

3 x 4 1 2 3

NOTE


Installation Slots

Figure 4-10 shows the installation slots of the boards of the BTS3900A in typical configurations.

Figure 4-10 Installation slots of the boards of the BTS3900A in typical configurations

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NOTE

It is recommended that the WBBP not using the CPRI interface not be installed in slots 2 or 3. For details


Cable Connections

Figure 4-11 and Figure 4-12 show the cable connections of the BTS3900A, where the 3 x 1

and 3 x 4 configurations are taken as an example respectively.

NOTE


Figure 4-11 Cable connections of the BTS3900A in 3 x 1 configuration



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Figure 4-12 Cable connections of the BTS3900A in 3 x 4 configuration



The BTS3900A supports 4-way RX diversity.

In 4-way RX diversity, the mandatory boards of the BTS3900A are the WMPT, WBBP, and




examples to describe the configuration of the BTS3900A in 4-way RX diversity.

Number of Modules

Table 4-6 lists the number of modules used for the BTS3900A in 4-way RX diversity.

Table 4-6 Number of modules used for the BTS3900A in 4-way RX diversity

ConfigurationType

Number ofWMPTs


Number of WRFUs

3 x 1 1 1 6

3 x 2 1 2 6

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NOTE



Installation Slots

Table 4-6 shows the installation slots of the BTS3900A in 4-way RX diversity.

Figure 4-13 Installation slots of the BTS3900A in 4-way RX diversity

NOTE



Cable Connections

Figure 4-14 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 4-14 Cable connections of the BTS3900A in 4-way RX diversity



The 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.



examples to describe the configuration of the BTS3900A in TX diversity.

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

Table 4-7 Number of modules used for the BTS3900A in TX diversity.

ConfigurationType

Number ofWMPTs


Number of WRFUs

3 x 1 1 1 6

3 x 2 1 2 6

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NOTE



Installation Slots

Figure 4-15 shows the installation slots of the boards of the BTS3900A in TX diversity.

Figure 4-15 Installation slots of the boards of the BTS3900A in TX diversity

NOTE



Cable Connections

Figure 4-16 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 4-16 Cable connections of the BTS3900A in TX diversity



The BTS3900A supports the 2 x 2 MIMO configuration.

In 2 x 2 MIMO configuration, the mandatory boards of the BTS3900A are the WMPT, WBBP,


The WBBPs can support three cells or six cells according to their specifications. The following


examples to describe the 2 x 2 MIMO configuration of the BTS3900A.

Number of Modules

Table 4-8 lists the number of modules used for the BTS3900A in 2 x 2 MIMO configuration.

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Table 4-8 Number of modules used for the BTS3900A in 2 x 2 MIMO configuration

ConfigurationType

Number ofWMPTs


Number of WRFUs

3 x 1 1 1 6

3 x 2 1 2 6

NOTE



Installation SlotsFigure 4-17 shows the installation slots of the boards of the BTS3900A in 2 x 2 MIMO

configuration.

Figure 4-17 Installation slots of the boards of the BTS3900A in 2 x 2 MIMO configuration

NOTE



Cable Connections

Figure 4-18 shows the cable connections of the BTS3900A in 2 x 2 MIMO configuration, where


NOTE





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Figure 4-18 Cable connections of the BTS3900A in 2 x 2 MIMO configuration


4.3 Hardware Configurations of the BTS3900L

This describes the hardware configurations of the BTS3900L in typical configuration, 4-way



This describes the typical configurations of the BTS3900L. The BTS3900L supports omni-

directional, 2-sector, 3-sector, and 6-sector configurations. The maximum configuration that the

BTS3900L supports is 6 x 4 or 12 x 2. The BTS3900L is mainly applicable to multi-mode

scenarios.


The BTS3900L supports 4-way RX diversity.


The BTS3900L supports TX diversity.


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The BTS3900L supports the 2 x 2 MIMO configuration.


This 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-mode

scenarios.

In typical configurations, the mandatory boards of the BTS3900L are the WMPT, WBBP, and




examples to describe the typical configurations of the BTS3900L.

Number of Modules

Table 4-9 lists the number of modules used for the BTS3900L in typical configurations.

Table 4-9 Number of modules used for the BTS3900L in typical configurations

ConfigurationType

Number ofWMPTs



3 x 1 1 1 3

3 x 2 1 1 3

3 x 3 1 2 3

3 x 4 1 2 3

NOTE


Installation Slots

Figure 4-19 shows the installation slots of the boards of the BTS3900L in typical configurations.

Figure 4-19 Installation slots of the boards of the BTS3900L in typical configurations


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NOTE

It is recommended that the WBBP not using the CPRI interface not be installed in slots 2 or 3. For details


Cable Connections

Figure 4-20 and Figure 4-21 show the cable connections of the BTS3900L, where the 3 x 1 and

3 x 4 configurations are taken as an example respectively.

NOTE


Figure 4-20 Cable connections of the BTS3900L in 3 x 1 configuration


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Figure 4-21 Cable connections of the BTS3900L in 3 x 4 configuration



The BTS3900L supports 4-way RX diversity.

In 4-way RX diversity, the mandatory boards of the BTS3900L are the WMPT, WBBP, and




examples to describe the configuration of the BTS3900L in 4-way RX diversity.

Number of Modules

Table 4-10 lists the number of modules used for the BTS3900L in 4-way RX diversity.

Table 4-10 Number of modules used for the BTS3900L in 4-way RX diversity

ConfigurationType

Number ofWMPTs


Number of WRFUs

3 x 1 1 1 6

3 x 2 1 2 6


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NOTE



Installation Slots

Table 4-10 shows the installation slots of the BTS3900L in 4-way RX diversity.

Figure 4-22 Installation slots of the BTS3900L in 4-way RX diversity

NOTE



Cable Connections

Figure 4-23 shows the cable connections of the BTS3900L in 4-way RX diversity, where the 3

x 1 configuration is taken as an example.

NOTE


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Figure 4-23 Cable connections of the BTS3900L in 4-way RX diversity



The 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.



examples to describe the configuration of the BTS3900L in TX diversity.

Number of ModulesTable 4-11 lists the number of modules used for the BTS3900L in TX diversity.

Table 4-11 Number of modules used for the BTS3900L in TX diversity.

ConfigurationType

Number ofWMPTs


Number of WRFUs

3 x 1 1 1 6

3 x 2 1 2 6


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NOTE



Installation Slots

Figure 4-24 shows the installation slots of the boards of the BTS3900L in TX diversity.

Figure 4-24 Installation slots of the boards of the BTS3900L in TX diversity

NOTE



Cable Connections

Figure 4-25 shows the cable connections of the BTS3900L in TX diversity, where the 3 x 1

configuration is taken as an example.

NOTE




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Figure 4-25 Cable connections of the BTS3900L in TX diversity



The BTS3900L supports the 2 x 2 MIMO configuration.

In 2 x 2 MIMO configuration, the mandatory boards of the BTS3900L are the WMPT, WBBP,




examples to describe the 2 x 2 MIMO configuration of the BTS3900L.

Number of Modules

Table 4-12 lists the number of modules used for the BTS3900L in 2 x 2 MIMO configuration.


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Table 4-12 Number of modules used for the BTS3900L in 2 x 2 MIMO configuration

ConfigurationType

Number ofWMPTs


Number of WRFUs

3 x 1 1 1 6

3 x 2 1 2 6

NOTE



Installation Slots

Figure 4-26 shows the installation slots of the boards of the BTS3900L in 2 x 2 MIMO

configuration.

Figure 4-26 Installation slots of the boards of the BTS3900L in 2 x 2 MIMO configuration

NOTE


about the slots of the BBU3900, see theBBU3900 Hardware Description.

Cable Connections

Figure 4-27 shows the cable connections of the BTS3900L in 2 x 2 MIMO configuration, where


NOTE




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Figure 4-27 Cable connections of the BTS3900L in 2 x 2 MIMO configuration


4.4 Hardware Configurations of the DBS3900

This describes the hardware configurations of the DBS3900 in typical configuration, 4-way RX


4.4.1 Typical Configuration

This describes the typical configurations of the DBS3900. The DBS3900 supports omni-




The DBS3900 supports 4-way RX diversity.


The DBS3900 supports TX diversity.

4.4.4 2 x 2 MIMO ConfigurationThe DBS3900 supports the 2 x 2 MIMO configuration.


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4.4.1 Typical Configuration

This describes the typical configurations of the DBS3900. The DBS3900 supports omni-


expansion from 1 x 1 to 6 x 4 or 3 x 8.In typical configurations, the mandatory boards of the DBS3900 are the WMPT, WBBP, and

RRU. The WMPT and WBBP are installed in the BBU3900.


description takes the WBBP supporting six cells, the RRU3804 supporting 60 W, and the

RRU3808 supporting 2 x 40 W as examples to describe the typical configuration of the

DBS3900.

Number of Modules

Table 4-13 lists the number of modules used for the DBS3900 in typical configurations.

Table 4-13 Number of modules used for the DBS3900 in typical configurations

Configuration Type

Number ofWMPTs


Number of RRU3804s orRRU3808s (No TXDiversity)

3 x 1 1 1 3

3 x 2 1 1 3

3 x 3 1 2 3

3 x 4 1 2 3

NOTE


Cable Connections

Figure 4-28, Figure 4-29, Figure 4-30, and Figure 4-31 show the cable connections of the

DBS3900, where the 3 x 1 and 3 x 4 configurations are taken as an example respectively.

NOTE

l It is recommended that the WBBP not using the CPRI interface not be installed in slot 2 or 3. For

details about the slots of the BBU3900, see theBBU3900 Hardware Description.

l The RRU3804 supports a maximum of 15 W per carrier in case of 4-carrier configuration.


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Figure 4-28 Cable connections of the DBS3900 in 3 x 1 configuration (configured with the

RRU3804)

(1) Antenna jumper (2) CPRI optical cable


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Figure 4-29 Cable connections of the DBS3900 in 3 x 1 configuration (configured with the

RRU3808)

(1) RF jumper (2) CPRI optical cable

NodeB

Technical Descripti

Documents

NodeB Technical Description(V200_05)