HUAWEI EQUIPMENT INSTALLATION

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OME201102
HUAWEI BTS3012 System Overview
ISSUE 1.0
www.huawei.com

HUAWEI TECHNOLOGIES CO., LTD.

All rights reserved

Chapter 1 Overview
Chapter 2 System Components
Chapter 3 Signal Processing
Chapter 4 Antenna and Feeder System
Chapter 5 Typical configuration

HUAWEI TECHNOLOGIES CO., LTD.

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Page 2

Features and Functions
 Double Transceiver Unit (DTRU). A single cabinet can support up to

12 carriers. It can smoothly evolve into WCDMA
 Transmit diversity, 4-receive diversity
 Support Power Boost Technology (PBT)

 BTS3012 can share cabinet with WCDMA base station. The module of

WCDMA base station can be inserted in the BTS3012 cabinet
 Support more various transmission mode including E1, STM-1,

microwave, and satellite transmission

HUAWEI TECHNOLOGIES CO., LTD.

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Page 3

Features and Functions
 Support GSM800M 、 850M 、 900M 、 1800M 、 1900M
 Support networking topology includes star, tree, chain and ring
 Support A5/1 and A5/2 encryption/decryption
 Support GPRS and EDGE
 Support dynamic and static power control
 Support the omni-directional coverage and directional coverage

HUAWEI TECHNOLOGIES CO., LTD.

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Page 4

Chapter 1 Overview

Chapter 2 System Components
Chapter 3 Signal Processing
Chapter 4 Antenna and Feeder System
Chapter 5 Typical configuration

HUAWEI TECHNOLOGIES CO., LTD.

All rights reserved

Page 5

BTS3012 Cabinet and Boards
D
M
L
C

D
E
L
C

D
C
O
M

D
E

L
C

D
D
P
U

D
S
A
C

Power

D
C
O
M

D
D
P
U

EMC

D
C
O

M

D
D
P
U

D
T
R
U

D
T
R
U

and

Wiring

D
T
R
U

D
T
R
U

D
T
R
U

D
T
R
U

Wiring
FAN
Air Inlet

D
T
M
U

D
T
M
U

D
E
M
U

D
C
S
U

D
C
C
U

D
A
T
U

Wiring & Air Inlet
Transmission Unit
Transmission Unit

HUAWEI TECHNOLOGIES CO., LTD.

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Page 6

Hardware structure
Abis Interface

E1

Um Interface

TBUS/DBUS/CBUS

Monitor

BITS

M
E
L
C

Extension
cabinet
DATU
TMA TMA
DTRU

DAFU

DTMU
fiber

TMA TMA
DTRU

E1

MS

Metro 100

DAFU
FH_BUS
TMA TMA

DEMU

DTRU

DAFU

NFCB
DATU

Common subsystem

HUAWEI TECHNOLOGIES CO., LTD.

Double transceiver
subsystem

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Forepart of RF Antenna and feeder
Subsystem
subsystem

Page 7

BTS3012 Cabinet and Boards
Abbreviations

Description

DTRU

Double Transceiver Unit

DTMU

Transmission & Timing & Management Unit for DTRU BTS

DCCU

Cable Connection Unit for DTRU BTS

DAFU

Antenna Front-end Unit for DTRU BTS

DDPU

Dual Duplexer Unit for DTRU BTS

DCOM

Combining Unit for DTRU BTS

DATU

Antenna and TMA Control Unit for DTRU BTS

DMLC

Monitor Signal Lightning-Protection Card for DTRU BTS

DELC

E1 Signal Lightning-Protection Card for DTRU BTS

DSAC

Signal Access Card for DTRU BTS

DCSU

Combined cabinet Signal connection Unit for DTRU BTS

DEMU

Environment Monitoring Unit for DTRU BTS

DCTB

Cabinet Top Backplane for DTRU BTS

FAN Box

NodeB Fan Controlling and monitoring Board

HUAWEI TECHNOLOGIES CO., LTD.

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Page 8

Common Subsystem
 DTMU

Transmission timing& management unit for DTRU BTS

 DEMU

Environment Monitoring Unit for DTRU BTS

 DCSU

Combined cabinet Signal connection Unit for DTRU BTS

 DCCU

Cable Connection Unit for DTRU BTS

 DATU

Antenna and TMA control unit for DTRU BTS

HUAWEI TECHNOLOGIES CO., LTD.

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Page 9

Functions of DTMU
 Providing the external GPS input, the BITS synchronized clock input
 Providing 4-route or 8-route E1 input 、 backup between the active

and standby boards
 Providing local MMI maintenance of the 10 M network port
 Controlling, maintaining, and operating the BTS
 Providing fault management, configuration management,

performance management, and security management
 Supporting 8-route digital alarm input. Two routes are lightning

arrester failure alarm detection

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Page 10

Functions of DEMU
 The DEMU is placed in slots 2 to 4 and slot 7 of the common subrack with

the DATU. The DEMU is an optional module. There is maximum one
DEMU under full configuration.
 Monitoring variations in the smoke, water, temperature, humidity, infrared,

and access control ,Handling alarms
 Guaranteeing normal operation of the equipment
 Output of 6-route Boolean value and input of 32-route main node alarms

CBUS3

Monitor signal
DMLC

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DEMU

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Page 11

Functions of DCSU
 The Combined Cabinet Signal

Connection Unit for DTRU BTS
(DCSU) is placed in slot 5 of the

common subrack, which is located
in the lower part of the cabinet.
There is only one DCSU and it is
mandatory

DTMU

DCCU

DCMB

 The DCSU transfers signals for the

combined cabinet and cabinet
group between the common
subrack and the cabinet top
subrack

HUAWEI TECHNOLOGIES CO., LTD.

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DTRB
DCSU
DCTB
DEMU

DATU

Page 12

Functions of DCCU
 The DCCU is placed in slot 6 of

the common subrack. There is
only one DCCU and it is
mandatory

DTMU
NFCB
DCMB

 Converting the input and output

DCCU
DCTB
DCSU

signals of the common subrack.
 Inputting the power of the common

subrack

DEMU
DATU

 Providing EMI filtering

HUAWEI TECHNOLOGIES CO., LTD.

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Page 13

Functions of DATU
DATU

 The DATU is placed in slots 2 to 4 and slot 7 of the

common subrack with the DEMU. It is optional and
there are maximum two DATUs

RUN
ACT
ALM

 Transmitting the remote electrical tilt unit (RET)

control signals

ANT0

 Feeding the TMA

ANT1

 Communicating with the DTMU through CBUS3 for

ANT2

control and alarm report

ANT3
ANT4
ANT5

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Page 14

Cabinet Top Access Subsystem
 DMLC ( Monitor Signal Lightning-Protection Card for DTRU BTS)
 DELC (E1 Signal Lightning-Protection Card for DTRU BTS)

HUAWEI TECHNOLOGIES CO., LTD.

D

D

D

M

E

E

S

L

L

L

A

C

C

C

C

All rights reserved

Page 15

CKB1

D

DCF

CKB2

 DSAC (Signal Access Card for DTRU BTS)

Double transceiver subsystem
 DTRU 、 Double Transceiver Unit 、

DTRU

 DTRB
DTRU
DTRU

DTRB

DTRU
DTRU
DTRU

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Page 16

Intra structure of DTRU
TX1

TX

IN1
combiner
combiner

TCOM

TRX0

IN2
TX2

RXM1
RXD1

divider
divider
TX
divider
divider

TRX1

RXM2
RXD2

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Page 17

DTRU transmit mode
 Transmit independence
 Transmit diversity
 PBT
 Wideband transmit combination

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Page 18

DTRU transmit mode-transmit independence
TX1

TX

IN1
TCOM

combiner
combiner

IN2

combiner
combiner

TRX0

IN2
TX2

TX

TRX1

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Page 22

DTRU receive mode

 Receive independence
 Receive diversity
 4-way receive diversity

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Page 23

DTRU receive mode- Receive independence
TX1

TX

IN1
combiner
combiner

TCOM

TRX0

IN2
TX2

RXM1
RXD1

divider
divider
TX
divider

RXM2

TRX1

HUAWEI EQUIPMENT INSTALLATION

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