111huawei Gsm Bts3900 Hardware Structure-20080728-Issue4.0

2008-07

www.huawei.com

HUAWEI Confidential

Security Level: Internal Use

HUAWEI BTS3900 Hardware Structure

ISSUE4.0

Wireless Case and Training

HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confidential Page 2

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 and higher integration.

In this slide, we’ll mainly introduce the hardware system

structure, basic functions of modules and networking mode of

the BTS3900.


Know the functions and features of BTS3900

Master the Hardware structure and function of BTS3900

Master the Network topologies of BTS3900


Chapter 1 BTS3900 System DescriptionChapter 1 BTS3900 System Description

Chapter 2 BTS3900 Hardware Structure

Chapter 3 BTS3900 Network Topology


Location

PSTN ISDN

PSPDN

Um Interface

BTS3900

BTS3900

BTS3900

BTS

OMC

HLR/AUC/EIR

BSC

MSC/VLR

SMC/VM

A Interface

MAP

MAP

TUP,ISUPMS

MS

MS

MS: Mobile Station BTS: Base Transceiver Station BSC: Base Station Controller

HLR: Home Location Register AUC: Authentication Center EIR: Equipment Identity Register

MSC: Mobile Switching Center VLR: Visitor Location Register SMC: Short Message Center

VM: Voice Mailbox OMC: Operation and Maintenance Center DBS ： Distributed Base Station


Chapter 1 BTS3900 System Description

Chapter 2 BTS3900 Hardware StructureChapter 2 BTS3900 Hardware Structure

Chapter 3 BTS3900 Network Topology


Section 1 System Structure

Section 2 Hardware Component


BTS3900 Cabinet

Cabinet size: H×W×D=900mm×600mm×450mm

Base size: H×W×D=400mm×600mm×420mm

Weight: 57kg(empty) /142kg(full configuration)


BTS3900 Cabinet Structure

Fully configured cabinet (-48VDC) Fully configured cabinet (+24VDC) Fully configured cabinet (~220VAC)


Section 1 System Structure

Section 2 Hardware Component


BBU Hardware Structure

The typical power consumption of the BBU is 50 W.

The BBU is a small box with all the external ports on the front panel.

The BBU3900 boards consist of the BSBC, GTMU, UELP, UPEU and UBFA.


BBU Board--BSBC

The BSBC is the backplane of the BBU. The BSBC provides eight

board slots, two power slots, and one fan slot. The universal BBU sub-rack backplane type C (2U) (BSBC) provides

backplane interfaces for communication between boards and supplies

power for boards. The GTMU is located in slots 5 and 6, slot 7 for a main control board

that supports 3G, and other ports are as common slots.


BBU Board--GTMU

The GSM transmission, timing, and management unit for BBU

(GTMU)

controls and manages the entire BTS. It provides interfaces related to

the reference clock, power supply, OM, and external alarm collection. The GTMU performs the following functions:Controls, maintains, and operates the BTS.Supports fault management, configuration management, performance management, and security management.Supports the monitoring of the fan module and power supply module.Distributes and manages BTS3900 clock signals.Provides clock input for testing.Provides port for terminal maintenance.Supports four E1 inputs.Provides CPRI ports for communication with the RF modules .


BBU Module--UBFA

The universal BBU fan unit type A (2U) (UBFA) communicates with

the

GTMU to regulate the temperature, adjust the fan speed, and report

alarms. The UBFA module is hot swappable.

Label Color Status Description

STATE Green 0.125s ON, 0.125s OFF

The module is not registered, and no alarm is reported.

1s ON, 1s OFF The module is running properly.

Red ON The module is reporting an alarm.


BBU Module--UPEU

The universal power and environment interface unit (UPEU)

supports the –48V/ +24V DC power input, supplies power to the

boards, modules, and fan in the BBU, and provides access to

multiple environment monitoring signals. The UPEU performs the following functions:

Converting -48V or +24V DC to +12V DC that is applicable to the boards.Providing two RS485 signals and eight dry contact alarms.Providing reverse connection protection for power cable connectors.

UPEA UPEB


BBU Board—UELPThe universal E1/T1 lightning protection unit (UELP) provides lightning

protection for four E1/T1 signals.

Port Type Cable Description

INSIDE DB25 male connector

E1 transfer cable of the BBU

Transfers the four E1/T1 signals between the UELP and the GTMU

OUTSIDE DB26 male connector

E1/T1 cables of the BBU

Provides the input and output of the four E1/T1 signals between the BBU and the BSC

The UELP has one DIP switch, which is used to set the impedance on the

E1/T1 port. There are four DIP bits on the DIP switch. DIP Switch DIP Status Description

1 2 3 4

S1 ON ON ON ON Applied to 75-ohm E1 cables in unbalanced mode.

OFF OFF OFF OFF Applied to other cases instead of 75-ohm E1 cables in unbalanced mode.


BBU Cable connection

The BBU3900 cables are classified into the PGND cable, -48VDC

power cable, E1/T1 cable, E1 transfer cable, environment monitoring

signal cable, CPRI signal cable between the BBU and the RRU, and

BBU monitoring signal cable. The cable connection relations of the BBU are as follows:


BBU Cables

The cables figure of the BBU

-48VDC power cables E1 transfer cable

FE cable CPRI optical cable


DRFU Board Ports on the panel

Type Connector Ports Description

Port for transceiving RF signals

N female connector ANT1 Used in connection to the antenna subsystemANT2

CPRI port SFP female connector

CPRI0 Used in connection to the BBU, or in connection to the upper-level cascaded DRFU

CPRI1 Used in connection to the lower-level cascaded DRFU

Port for transmitting RF signals between DRFUs

QMA female connector

RX1 in Input port for diversity signals in antenna channel 1

RX1 out Output port of diversity signals in antenna channel 1

RX2 in Input port for diversity signals in antenna channel 2

RX2 out Output port of diversity signals in antenna channel 2

Power port 7W2 power connector

PWR Receives power input


DCDU-01 ModuleThe direction current distribution unit (DCDU-01) provides -48V DC

power of 10 outputs.The functions of the DCDU-01 are:

Receiving -48 V DC power input.Distributing the -48 V DC power of 10 outputs for boards and modules in

the cabinet.


DCDU-01 ModulePanel of the DCDU-01 (10 outputs)

Name Label Description

Power input terminal

NEG(-) DCDU-01 low level input terminal

RTN(+) DCDU-01 high level input terminal

Power output port

SPARE2, SPARE1, BBU, FAN, and RFU5-RFU0

Power ports supplying the 10 outputs of power to the BBU, DRFU, GATM, and fan box

Power switch

SPARE2, SPARE1, BBU, FAN, and RFU5-RFU0

Power switch controlling the 10 outputs for the BBU, DRFU, GATM, and fan box


PSU ModuleThe Power Supply Unit (PSU) converts the ~220V AC or +24V DC

power into the -48V DC power.

The PSU (AC/DC) has the following functions:Converts the 220 V AC power into the -48 V DC power.

Monitors alarms related to module faults (such as output over-voltage,

no output, and fan faults), alarms related to module protection (such

as over-temperature protection, and input over-voltage/under-voltage

protection), and power failure alarm.

Monitors the charging and discharging of the batteries.

The PSU (DC/DC) has the following functions:Converts the +24 V DC power into the -48 V DC power.

Monitors alarms related to module faults (such as output over-voltage,

no output, and fan faults), alarms related to module protection (such

as over-temperature protection, and input over-voltage/under-voltage

protection), and power failure alarm.


PMU ModuleThe PMU manages the power supply and batteries. The PMU is

the core of the power monitoring system. The PMU performs the following functions:

Communicates with the central processing unit through the RS232/RS422

serial port.Manages the power system and the battery charging and discharging.Detects and reports water damage alarms, smoke alarms, door status

alarms, and standby Boolean value alarms; reports ambient humidity and

temperature, battery temperature, and standby analog values.Detects power distribution and reports alarms, and also reports dry

contact alarms.

(1) LEDs (2) Power supply test ports

(3) RS232/RS422 ports (4) Battery control switch

(5) COM port -(1) Backplane port (2) DIP switch


FAN BoxThe fan box regulates the temperature at the air inlet of the cabinet

and in the fan box. It can adjust the rotation speed of the fans to

implement ventilation and dissipation for the cabinet.The fan box performs the following functions:

Provides forced ventilation and dissipation for the cabinet.Supports two modes of adjusting the rotation speed of the fans:

adjustment based on the temperature and adjustment controlled by the

central processing unit.Detects the temperature.Communicates with the central processing unit to report alarms and the

adjusted rotation speed of the fans based on the temperature to the

central processing unit.Stops the rotation of the fans when the ambient temperature is low.


Chapter 1 BTS3900 System Description

Chapter 2 BTS3900 Hardware Structure

Chapter 3 BTS3900 Network TopologyChapter 3 BTS3900 Network Topology


BTS3900 Topology BTS Topology

The topologies of the BTS are classified into star, chain, tree, and ring topologies.

E1/T1 cable can be used between BBU and BSC or transmission equipment,

Optical and LAN cable can be used between BBU and route equipment.


BTS Topology The topologies of the BTS are classified into star, chain, tree, and ring

topologies. Star mode Tree mode

Chain mode Ring mode


Summary

BTS3900 Function and Features

BTS3900 Hardware Structure, such as BBU and DRFU etc.

BTS3900 Network Topology

Thank You

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111huawei Gsm Bts3900 Hardware Structure-20080728-Issue4.0

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