huawei 3900 bts structure

8/2/2019 Huawei 3900 Bts Structure

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HUAWEI TECHNOLOGIES CO., LTD. All rights reserved

www.huawei.com

Internal

HUAWEI BTS3036

System Structure

ISSUE 1.0


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HUAWEI TECHNOLOGIES CO., LTD. All rights Reserved Page 2

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

Know the functions and features of BTS3036

Master the BTS3036 hardware structure

Master the cable connection of BTS3036


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References

BTS3036 Product description

BTS3036 Installation Manual

BTS3036 Hardware description


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Chapter 1 Overview

Chapter 2 System Components

Chapter 3 Typical configuration


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Features and Functions 1

It shares the BBU, which is the central processing unit, with the

BTS3036 to minimize the number of spare parts and reduce the cost.

It can be flexibly installed in a small footprint and can be easily

maintained

It supports multiple frequency bands, such as PGSM900, EGSM900,

and DCS1800


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Features and Functions 2 It supports the GPRS

It supports multiple network topologies, such as star, tree, chain, ring,

and hybrid topologies

It supports the cell broadcast SMS and point-to-point SMS.

A single cabinet supports up to 12 carriers in the maximum cell

configuration of S4/4/4.


7/49HUAWEI TECHNOLOGIES CO., LTD. All rights Reserved Page 7

Chapter 1 Overview

Chapter 2 System Components

Chapter 3 Signal Processing

Chapter 4 Typical configuration


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System Architecture of BTS3036

BTS3036 system


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Appearance of the BTS3036 Cabinet

ConfigurationType

Width(mm)

Depth(mm)

Height(mm)

Cabinet 600 450 900

BTS3036 cabinet

Configuration Type Weight (kg)

Empty cabinet 57

Full Configuration 142


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Structure of the BTS3036 Cabinet(-48V)

Fully configured BTS3036 Single cabinet

(1) Double radio filter

unit

(2) Fan box

(3) Baseband unit (4) Direct current

distribution unit

(6) Cable in/out unit

-


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BTS3036 Cabinet and Boards

Board/Module Full NameBSBC(BBU) Universal BBU Subrack Backplane type C (2U)

UEIU Universal Environment Interface Unit

GTMU GSM Transmission and Management Unit for the BBU

UELP Universal E1/T1 Lightning Protection Unit

UBFA Universal BBU Fan unit type A (2U)

UPEU Universal Power and Environment interface Unit

DRFU Double Radio Filter Unit

DCDU Direct Current Distribution Unit

GATM GSM Antenna and TMA Control Module

Fan box Fan box


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Logical Structure of the BTS3036


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Common Subsystem

(1) BBU Control subsystem whose functions are implemented by

the BBU

(2) DRFU RF subsystem whose functions are implemented by the

DRFU

(3) DCDU Power subsystem

(4) Fan Box


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1.1 Functions of BBU

Provides physical ports between the BTS and the BSC forinteraction

Provides the CPRI ports for communication with the DRFU

Provides the USB port for downloading the BTS software

Provides OM channels for connection to the LMT (or M2000)

Processes UL and DL data

Provides centralized management on the entire BTS system,

such as OM and signaling processing

Provides the reference clock for the entire system


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1.2 Appearance and Panel of the BBU

1. BBU

2. Panel of the BBU

Dimensions(mm):44231086.1(2U)Weight:12KgPower Type:-48V DC


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1.3 Logical Structure of the BBU3036


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1.4.1 Ports of the BBU3036

Power port

Port Type Location Description

PWR 7W2 connector 1.4.2.7.3 UPEU

Module

-48 V power input


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Transmission ports 1


INSIDEDB25 male

connectorUELP

board

Transfers the four E1/T1 signals between the

UELP and the GTMU.

OUTSIDE DB26 maleconnector

Provides the input and output of the fourE1/T1 signals between the BBU and the BSC.


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Transmission ports 2Port Type Location Description

CPRI0

CPRI5

SFP

connector

GTMU

board

Provides the input and output of the optical and

electrical transmission signals between the BBU and

the RF module.

E1/T1 DB26 maleconnector

Provides the input and output of the four E1/T1signals between the GTMU and the UELP or

between the GTMU and the BSC.

FE0 RJ45

connector

A reserved port that performs the following function:

Connects the BBU to a routing device in the

equipment room through the Ethernet cable to

transmit network information.

FE1 DLC

connector


Connects the BBU to a routing device in the

equipment room through the optical cable to transmit

network information.


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Alarm ports

Name Type Location Description

MON0 RJ45

connector

1.4.2.7.3 UPEU

Module and

1.4.2.7.4 UEIU

Board

Provides the input and output of the

externally collected environment

monitoring signals to the GTMU according

to the RS485 communications protocol.

MON1 RJ45

connector

Reserved

EXT-

ALM0

RJ45

connector

Transmits the externally collected

environment monitoring signals to the

GTMU through communication protocols

related to the dry contact.

EXT-

ALM1

RJ45

connector

Reserved


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Other ports of the BBU


ETH RJ45

connec

tor

1.4.2.7.5

GTMU Board

For local maintenance and commissioning

USB USB

connec

tor

A reserved port that performs the following

function:

Automatically upgrades the software through

the USB disk.

TST USB

connec

tor

For testing of the output clock signals by using

a tester


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1.4.6 BBU3036 Boards and Modules

The BBU3036 boards consist of the following:

(1) BSBC Board

(2) UEIU Board

(3) GTMU Board(4) UELP Board

the BBU3036 modules consist of the following:

(5) UBFA Modules

(6) UPEU Modules


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1.4.6.1 Functions of BSBC Board

Clock signal: The BSBC sends the precise clock signals provided by theGTMU to each service processing module as reference clock.

Power input: The BSBC distributes the +12 V DC power input provided by

the power module to the boards and modules.

Low-speed signal management: The BSBC provides the interface for theGTMU to monitor and manage the service board, power, backplane, and

fan.

High-speed signal management: The BSBC distributes and converges

information about data, control, and management of all boards in the

baseband unit system

Service signal: The BSBC transfers the UL and DL baseband data of the

GTMU.


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1.4.6.1 Slots of BSBC Board

The BSBC is the backplane of the BBU. The BSBC provides eightboard slots, two power slots, and one fan slot.


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1.4.6.2 Functions of UBFA Module

Fan control board

(1) Processes the two-channel 12 V power input by the

backplane to provide power for the fan

(2) Communicates with the GTMU to control and monitor

the fan

(3) Detects and adjusts the fan speed

(4) Detects the board temperature by the built-in

temperature sensor

(5)Provides the automatic reset function

Fan: performs forced heat dissipation for the entire BBU


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1.4.6.2 LEDs onUBFA Module

LED Color Status Description

STATE Green Blinking twice

per second

The board is not securely connected. An

alarm is not generated.

Red On An alarm is generated.

Green Blinking once

every two

seconds

The board operates normally.


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1.4.6.3 Functions of UPEU Modul

Supplies power to the boards, modules, and fans

Introduces environment monitoring signals to the BBU

Reports fault signals, in-position signals, and version

information associated with the boards and modules

Structure and working principles of the UPEU


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1.4.6.3 Ports on UPEU panel

Port Type DescriptionMON0 RJ45

Connector

Provides the input and output of the externally collected environment

monitoring signals to the GTMU

MON1 RJ45

Connector

Reserved

EXT-

ALM0

RJ45

Connector

Transmits the externally collected environment monitoring signals to the

GTMU through communication protocols related to the dry contact.

EXT-

ALM1

RJ45

Connector

Reserved

PWR 7W2

connector

-48V power input


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1.4.6.3 LEDs on UPEU panel

LEDs on the UPEU


RUN Green On The module is functional.

Off The module is not functional.


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1.4.6.4 Function of UEIU Board

The universal environment interface unit (UEIU) supports multiple

environment monitoring signals. The UEIU is optional. It is

configured when the environment interfaces are insufficient.


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1.4.6.4 Ports on UEIU

Port Type DescriptionMON0 RJ45

connector

Provides the input and output of the externally collected environment

monitoring signals to the GTMU according to the RS485

communications protocol

MON1 RJ45

Connector

Reserved

EXT-

ALM0

RJ45

Connector

Transmits the externally collected environment monitoring signals to

the GTMU through communications protocol related to the dry contact

EXT-

ALM1

RJ45

connector

Reserved


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1.6.4.5 Function of GTMU Board

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

Provides port for terminal maintenance

Supports four E1 inputs

Provides CPRI ports for communication with the RF modules


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1.4.6.5 Ports on GTMU Board

Port Type Description

CPRI0

CPRI5

SFP

connector

Provides the input and output of optical and electrical transmission

signals

ETH RJ45

connector

Local maintenance and commissioning

FE0 RJ45

connector


Connects the BBU to a routing device in the equipment room through

the

Ethernet cable to transmit network information


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1.4.6.5 Ports on GTMU Board

Port Type Description

FE1 DLC

connector


Connects the BBU to a routing device in the equipment room

through the optical cable to transmit network information

USB USB

Connector


Automatically upgrades the software through the USB disk

TST USB

connector

Testing of the output clock signals by using a tester

E1/T1 DB26

male

connector

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

GTMU and the UELP or between the GTMU and the BSC.


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1.4.6.5 LEDs on GTMU Board


RUN Green On The board is faulty.

Off There is no power supply or the board is faulty.

Blinking once

every two seconds

The board is operational.

Blinking once

every four seconds

The OML link is abnormal.

Blinking four times

per second

The board is loading software.

ALM Red On A fault occurs in the running board.

Off An alarm is not generated.

ACT Green On The board is operational.

Off The board is faulty.


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1.4.6.5 LEDs on GTMU Board


LIU0

LIU3

Green On A local E1/T1 alarm is generated.

Blinking four

times per second

A remote E1/T1 alarm is generated.

Off This link is not used or the alarm is cleared.

CPRI0

CPRI5

Green On The CPRI link is functional.

Red On The reception of the optical module is

abnormal and an alarm is generated.


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1.4.6.5 DIP Switch of GTMU Board

DIP Switch DIP Status Description

1 2

SW1 ON ON The E1 impedance is set to 75 .

OFF ON The E1 impedance is set to 120 .

ON OFF The T1 impedance is set to 100 .

DIPSwitch

DIP Status Description

1 2 3 4

SW2 ON ON ON ON The E1 cable is grounded.

OFF OFF OFF OFF The E1 cable is not grounded.


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1.4.6.5 DIP Switch of GTMU

DIP Switch DIP Status Description

1 2 3 4

SW4 ON ON ON ON The E1 link can be bypassed.

OFF OFF OFF OFF

DIPSwitch

DIP Status Description

1 2 3 4

SW5 ON ON ON ON

OFF ON ON OFF The E1 link of the Level 1 cascaded BTS can be bypassed.

ON OFF ON OFF The E1 link of the Level 2 cascaded BTS can be bypassed.

OFF OFF ON OFF The E1 link of the Level 3 cascaded BTS can be bypassed.

ON ON OFF OFF The E1 link of the Level 4 cascaded BTS can be bypassed.

OFF ON OFF OFF The E1 link of the Level 5 cascaded BTS can be bypassed.


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2.1 Functions of DRFU It implements the direct frequency conversion technique in the transmit

channel, modulates the baseband signals to GSM RF signals. After filtering,

amplifying, and combining the RF signals, the DRFU sends the signals to

the antenna for transmission. The combining can be performed as required.

It receives RF signals from the antenna and performs down-conversion,

amplification, analog-to-digital conversion, matched filtering, and AutomaticGain Control (AGC). Then, the DRFU transmits the signals to the BBU for

further processing.

It controls power and detects the Voltage Standing Wave Ration (VSWR).


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2.2 Operating Environment of DRFU


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2.3 Functional structure of DRFU


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2.4 DRFU Panel

Specifications of the DRFU

Item Specifications

Dimensions Front panel: 395.2 mm (L)

70.6 mm (W)

Working voltage -48 V power inputPower consumption

(heat consumption)

Maximum power

consumption: 450 W

Weight 12 kg


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2.5 LEDs on DRFU

LED Status MeaningRUN On The power input is normal, but the BBU is faulty.

Off There is no power supply or the module is faulty.

Blinking once

every two seconds

The module is functional.

Blinking fourtimes per second

The module is loading software or is not started.

ALM On A fault alarm is generated.

Off No alarm is generated.

ACT On The module is functional and is correctly

connected to the BBU.

Off The connection with the BBU is not established.

Blinking once

every two seconds

The DRFU is being tested on the Site Maintenance

Terminal.


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2.6 LEDs on DRFU

LED Status MeaningVSWR Off (red) No VSWR alarm is detected.

Blinking once every two

seconds (red)

The VSWR alarm is generated on only the

ANT2 port.

Blinking four times per

second (red)

The VSWR alarms are generated on the ANT1

and ANT2 ports.

On (red) The VSWR alarm is generated on only the

ANT1 port.

CPRI0 On (green) The CPRI link is functional.

On (red) The interface module fails to receive signals.


seconds (red)

The CPRI link has a loss-of-lock error.

CPRI1 On (green) The CPRI link is functional.

On (red) The interface module fails to receive signals.


seconds (red)

The CPRI link has a loss-of-lock error.


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2.7 Ports on the DRFU panelType Connector Ports Description

Port fortransceiving

RF signals

N female Connector ANT1 Used in connection to the antenna Subsystem

ANT2

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 antennachannel 2

RX2

out

Output port of diversity signals in

antenna channel 2

Power port 7W2 power connector PWR Receives power input


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3.1 Function of DCDU (10 Outputs) The DCDU provides one input and 10 outputs and distributes

the -48 V DC power to the BBU, DRFU, and fan box in the

cabinet.

DCDU (10 outputs)


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3.2 Specification of DCDU(10 Outputs)

Item Specifications

Dimensions Module: 442.0 mm (W) x 42.0 mm (H)

Weight 3kg

Working voltage Normal value -48 V DC

Permissible Range -38.4 V DC to -57 V DC


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3.4 Panel of DCDU (four outputs)

Name Label Description

Power

input

terminal

NEG(-) DCDU low level input terminal

RTN(+) DCDU 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 boxPower

switch

SPARE2, SPARE1, BBU,

FAN, and RFU5-RFU0

Power switch controlling the 10 outputs for the

BBU, DRFU, GATM, and fan box

Alarm

output port

SPD ALM Dry contact alarm output port


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huawei 3900 bts structure

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