Huawei Bts3900 Hardware Structure Issue1.0

HUAWEI BTS3900 Hardware Structure

www.huawei.com

Foreword

The BTS3900 developed by Huawei is an indoor macro BTS. The BTS3900 mainly consists of the BBU and DRFUs. Compared with

traditional BTSs, the BTS3900 features simpler structure andhigher integration.

In this slide, well mainly introduce the hardware system structure,

application scenarios, basic functions of modules, networkingmode and typical configuration of the BTS3900

References

BTS3900 System Description BTS3900 Hardware Description

Objectives

Upon completion of this course, you will be able to:

Know the application scenarios of BTS3900 Grasp the hardware structure of BTS3900 Grasp the functions of the modules Master typical configuration of BTS3900 Know the networking topology of BTS3900

Contents1. BTS3900 Overview 2. BTS3900 Hardware Components

2.1 BTS3900 basic structure 2.2 BBU hardware structure 2.3 Power supply system of BTS3900 2.4 Other boards and modules 2.5 Cables connection of the cabinet

3. Configurations of the BTS3900

3.1 Key parameters in BTS3900 configuration 3.2 Typical configuration 3.3 RF cable connection configuration

3.4 Topology configuration3.5 Configuration principles

Contents1. BTS3900 Overview 2. BTS3900 Hardware Components 3. Configurations of the BTS3900

Location of BTS3900Um Interface MS BTS3900 BSC A Interface MS MSC/VLR MAP BTS3900 TUP,ISUP PSTN ISDN PSPDN

BTS MS BTS3900 OMC

HLR/AUC/EIR SMC/VM

MS: Mobile Station HLR: Home Location Register

BTS: Base Transceiver Station AUC: Authentication Center

BSC: Base Station Controller EIR: Equipment Identity Register

MSC: Mobile Switching CenterVM: Voice Mailbox

VLR: Visitor Location RegisterOMC: Operation and Maintenance Center

SMC: Short Message Center

Some Functions and Features

It adopts the unified BTS platform developed by Huawei Wireless and enables the smooth evolution from 2G to 3G. It supports the Abis IP/FE interface in hardware and enables Abis over IP through software upgrade if required. It shares the BBU, which is the central processing unit, with the DBS3900 to minimize the number of spare parts and reduce the cost. It can be flexibly installed in a small footprint and easily maintained with low cost. It supports transmit diversity and PBT. It supports 2-antenna and 4-antenna receive diversity to improve the uplink coverage. It supports the GPRS and EGPRS.

Some Functions and Features

It supports the hierarchical cell, concentric cell, and micro cell. It supports multiple network topologies, such as star, tree, chain, ring, and hybrid topologies.

It supports the A5/3, A5/2, and A5/1 encryption and decryption algorithms.

It supports coexistence with the BTS3012. A single cabinet supports up to 12 carriers in the maximum cell configuration of S4/4/4.

Multiple cabinets support up to 72 carriers in the maximum cellconfiguration of S24/24/24.

Receiver sensitivity on TCH/FS is -113 dBmPage8

Contents1. BTS3900 Overview 2. BTS3900 Hardware Components 3. Configuration of the BTS3900

Contents

2. BTS3900 Hardware Components

Structure of the BTS3900 Cabinet

(1) Double radio filter unit (2) Fan box (3) GSM antenna and TMA control module (4) Baseband unit (5) Direct current distribution unit

Structure of the BTS3900 Cabinet

(1) Double radio filter unit (2) Fan box (3) Baseband unit (4) Direct current distribution unit (5) Cable in/out unit (6) Power supply unit

AbbreviationsBoard/ module BSBC UEIU GTMU UELP UBFA UPEU DRFU DCDU GATM DPMU PSU(AC/DC) PSU(DC/DC) Full NameFull Configuration

QuantityMinimum Configuration

Universal BBU Subrack Backplane type C (2U) Universal Environment Interface Unit GSM Transmission and Management Unit for BBU Universal E1/T1 Lightning Protection Unit Universal BBU Fan unit type A (2U) Universal Power and Environment interface Unit Double Radio Filter Unit Direct Current Distribution Unit GSM Antenna and TMA Control Module Power and Environment Monitoring Unit Power Supply Unit (AC/DC) Power Supply Unit (DC/DC)

1 1 1 1 1 2 6 1 1 1 3 4

1 0 1 0 1 1 1 1 0 0 0 0

Fan box

Logical Structure and Signal Flow

Stack Mode

When two BTS3900 cabinets (-48 V) are stacked, the BBU is installed only in the lower cabinet and serves as the baseband control unit for the two cabinets.

Stack Mode

When the BTS3900 cabinet (-48 V) is stacked on the BTS3900 cabinet (220 V or +24V), a maximum of nine DRFUs can be configured.

When two cabinets are stacked, the BBU is installed only in the lower cabinet and serves as the baseband control unit for the two cabinets.

Contents

2. BTS3900 Hardware Components

The typical power consumption of BBU is 35W The weight of the BBU is 12 kg at most.

All the boards can be inserted from the front panelThe Permissible range of power input is 38.4 V DC to 57 V DC

Working Principles of the BBU

Boards and Modules in BBU

BSBC: The universal BBU subrack backplane type C GTMU: The GSM Transmission, Timing and Management Unit UBFA: The universal BBU fan unit type A UPEU: The universal power and environment interface unit UELP: The universal E1/T1 lightning protection unit UEIU: The universal environment interface unit

BSBC Board

The BSBA provides slot 6 for the GTMU, slot 7 for a main control board that supports 3G, and slots 0 to 5 as common slots. The GTMU is 1 U high. Therefore, from the view of the front panel, the GTMU is located in slots 5 and 6. Provide backplane interfaces, communication channels, distribute clock signal and +12V power supply for the other boards

Controls, maintains, and operates the BTS Supports fault management, configuration management, performance management, and security management Monitors the fan module and the power supply module Distributes and manages BTS clock signals Provides clock input for testing Provides the Ethernet port for terminal maintenance

Supports four E1 inputsProvides the CPRI ports for communication with the DRFU

GTMU PortsPort Type Corresponding cableOptical fiber between BBU and DRFU Special Ethernet cable Ethernet cable Optical fiber

DescriptionConnected to DRFU for the optical signal transmission Terminal maintenance and commissioning A reserved port that performs the following function: Connects the BBU to a routing device in the equipment room through the Ethernet cable for transmission

CPRI0 DLC CPRI5 ETH FE0 FE1 RJ45 RJ45 DLC

A reserved port that performs the following function: Automatically upgrades the software through the USB disk

TEST E1/T1

USB DB26 male

BBU E1/T1

Tests the output clock signals with a tester Provides the input and output of the four E1/T1 signals between the GTMU and the UELP or between the GTMU and the BSCPage23

GTMU IndicatorsIndicator RUN Color Green Green Green Green Green ALM ACT Red Green On Off Slow flash(1s on1s off) Slow flash (2s on2s off) Status Description Board has fault Not power input or the board is faulty The board is operational. OML is abnormal

Fast flash (0.1

Huawei Bts3900 Hardware Structure Issue1.0

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