Transcript
Page 1: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. All rights reserved

www.huawei.com

Internal

HUAWEI BTS3012

Page 2: GSM HUAWEI BTS3012 Hardware Structure

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

Upon completion of this course, you will be able

to:

Know the functions and features of BTS

Master the BTS hardware structure

Master the cable connection of BTS

Page 3: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 3All rights reserved

References

BTS3012 Technical Manual

BTS3012 Installation Manual

BTS3012 User Manual

Page 4: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 4All rights reserved

Chapter 1 OverviewChapter 1 Overview

Chapter 2 System ComponentsChapter 2 System Components

Chapter 3 Signal ProcessingChapter 3 Signal Processing

Chapter 4 Typical configurationChapter 4 Typical configuration

Page 5: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 5All rights reserved

Location

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

PSTN ISDN

PSPDN

Um Interface

BTS3012

BTS3012

BTS3012

BTS3012

OMC

HLR/AUC/EIR

BSC

MSC/VLR

SMC/VM

A Interface

MAPMAP

TUP,ISUPMS

MS

MS

Page 6: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 6All rights reserved

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

Page 7: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 7All rights reserved

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 includes E1, STM-1,

microwave, and satellite transmission

The DTRU of the BTS3012 can be inserted into

BTS30/BTS312 with -48V DC power supply

Page 8: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 8All rights reserved

Chapter 1 OverviewChapter 1 Overview

Chapter 2 System ComponentsChapter 2 System Components

Chapter 3 Signal ProcessingChapter 3 Signal Processing

Chapter 4 Typical configurationChapter 4 Typical configuration

Page 9: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 9All rights reserved

Hardware structure

TMA TMA

DTRU DAFU

Antenna and feeder subsystem

Forepart of RFSubsystem

TMA TMA

DTRU DAFU

TMA TMA

DTRU DAFU

Double transceiver subsystem

DATU

Um Interface

DATU

fiber

E1

Abis Interface

MELC

Common subsystem

NFCB

Metro 100

DTMU

DEMU

E1

BITSMonitor

TBUS/DBUS/CBUS

MS

FH_BUS

Extension cabinet

Page 10: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 10All rights reserved

BTS3012 Cabinet and Boards D D D D

Wiring & Air Inlet

Wiring

DDPU

DCOM

DCOM

DDPU

DCOM

DTRU

DTRU

DTRU

DTRU

DTRU

DTRU

Wiring

FAN

Air Inlet

MLC

Power and EMC

Transmission Unit

DDPU

ELC

ELC

SAC

Transmission Unit

DTMU

DTMU

DEMU

DC

CU

DC

SU

DAT

U

Page 11: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 11All rights reserved

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

Page 12: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 12All rights reserved

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

Page 13: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 13All rights reserved

Functions of DTMU

Provides BITS synchronized clock inputs Provides data backup between the active and standby boards Provides the 10 Mbit/s Ethernet port for maintenance Supports four E1 inputs by default or eight E1 inputs if required Controls, maintains, and operates the BTS Downloads software for the BTS Provides fault management, configuration management, performance managem

ent, and security management Provides centralized clock distribution and management of the entire BTS, and th

e hot backup of the clock unit Provides backup for the E1 ports and the main control unit Provides eight digital alarm inputs, two of them being lightning arrester failure ala

rm inputs Provides four extended digital control signal outputs Monitors the external fan control board and the power modules

Page 14: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 14All rights reserved

Structure of DTMU

MCK

OML

DBUS

CBUS2

Clock

BIUDTRU

DTMU

BSC

MCUMMI

LMT

Abis

External

synchronizedclockSubrack number

and clock

Page 15: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 15All rights reserved

LEDs on the DTMU panel

RUN

ACT

PLL

LIU1

LIU2

LIU3

LIU4

SWT

ALM

RST

MMI

T2M

FCLK

T13M

DTMU

LED Color Description Status Meaning

RUN Green Operating indicator of the board

Slow flash (on for 2s and off for 2s)

The OML is blocked.

Slow flash (on for 1s and off for 1s)

Normal

Fast flash at unfixed intervals

The BSC is loading data.

Off There is no power input for the board.

ACT Green Active/standby status indicator

Off Standby board

On Active board

PLL Green Clock status indicator

Off The clock is abnormal.

On Free-run

Fast flash (on for 0.125s and off for 0.125s)

Pull-in

Fast flash (on for 0.5s and off for 0.5s)

Locked

LIU1 Green Transmission status indicator of E1 port 1 or port 5

Off E1 port 1 is normal when SWT is off.

E1 port 5 is normal when SWT is on.

On E1 port 1 near end alarm occurs when SWT is off.

E1 port 5 near end alarm occurs when SWT is on.

Fast flash (on for 0.125s and off for 0.125s)

E1 port 1 remote end alarm occurs when SWT is off.

E1 port 5 remote end alarm occurs when SWT is on.

Page 16: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 16All rights reserved

LEDs on the DTMU panel

RUN

ACT

PLL

LIU1

LIU2

LIU3

LIU4

SWT

ALM

RST

MMI

T2M

FCLK

T13M

DTMU

LED Color Description Status Meaning

LIU2 Green Transmission status indicator of E1 port 2 or port 6

Off E1 port 2 is normal when SWT is off.

E1 port 6 is normal when SWT is on.

On E1 port 2 near end alarm occurs when SWT is off.

E1 port 6 near end alarm occurs when SWT is on.

Fast flash (on for 0.125s and off for 0.125s)

E1 port 2 remote end alarm occurs when SWT is off.

E1 port 6 remote end alarm occurs when SWT is on.

LIU3 Green Transmission status indicator of E1 port 3 or port 7

Off E1 port 3 is normal when SWT is off.

E1 port 7 is normal when SWT is on.

On E1 port 3 near end alarm occurs when SWT is off.

E1 port 7 near end alarm occurs when SWT is on.

Fast flash (on for 0.125s and off for 0.125s)

E1 port 3 remote end alarm occurs when SWT is off.

E1 port 7 remote end alarm occurs when SWT is on.

LIU4 Green Transmission status indicator of E1 port 4 or port 8

Off E1 port 4 is normal when SWT is off.

E1 port 8 is normal when SWT is on.

On E1 port 4 near end alarm occurs when SWT is off.

E1 port 8 near end alarm occurs when SWT is on.

Fast flash (on for 0.125s and off for 0.125s)

E1 port 4 remote end alarm occurs when SWT is off.

E1 port 8 remote end alarm occurs when SWT is on.

SWT Green Indicates the transmission status of E1 links

When the DTMU supports eight E1 routes, the SWT status is slow flash (on for 10s and off for 10s).

When the SWT is off, LIU1 to LIU4 indicate the transmission status of E1 port 1 to 4.

When the SWT is on, LIU1 to LIU4 indicate the transmission status of E1 port 5 to 8.

When the DTMU supports four E1 routes, the SWT LED is always off.

LIU1 to LIU4 indicate the transmission status of E1 port 1 to 4.

ALM Red Alarm indicator

Off No board alarm

On An alarm is generated.

Page 17: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 17All rights reserved

Ports on the DTMU panel

Port Type Function

T2M SMA female connector 2 MHz reference clock, used to test and tune clock precision

FCLK SMA female connector 216.7 Hz frame clock

T13M SMA female connector 13 MHz reference clock, used to test and tune clock precision

MMI RJ45 connector Terminal maintenance port

Page 18: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 18All rights reserved

Functions of DEMU The DEMU guarantees the normal operation of the BTS by monitoring the

surrounding environment.

The DEMU performs the following functions:

Monitors the environment information sent from the smoke sensor,

water sensor, temperature and humidity sensor, infrared sensor, and

door control sensor.

Collects alarm information and reports it to the DTMU.

Provides 6 Boolean value outputs and 32 Boolean value inputs.

Page 19: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 19All rights reserved

Functions of DCSU

The Combined cabinet Signal connection Unit for DTRU BTS (DCSU) is

placed in slot 5 of the common subrack. The DCSU is a mandatory board.

Only one DCSU can be configured.

The DCSU performs the following functions:

Transmits clock signals, data signals, and control signals between the

main cabinet and the extension cabinet.

Transmits the clock signals, data signals, and control signals from the

DTMU to the DTRU ( for BTS3012Ⅱ) or QTRUs ( for 36TRXs).

Transmits the in-position signals of the DCOM, DDPU, or DFCU in th

e DAFU subrack to the DCMB. ( for BTS3012Ⅱ) Transmits the in-position signals of the DDPU located in the DAFU su

brack to the DCMB. ( for 36TRXs).

Page 20: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 20All rights reserved

Ports on the DCSU panel

CC_IN

CC_OUT

TO_DTRB

TOP2

DCSU

Silk-Screen

Type Description

CC_OUT MD64 female connector

Connects with the cable for combined cabinets when the cabinet serves as the main cabinet and connects with the RF cable when the cabinet serves as the extension cabinet

CC_IN MD64 female connector

Connects with the RF cable when the cabinet serves as the main cabinet and connects with the cable for combined cabinets when the cabinet serves as the extension cabinet

TO_DTRB MD64 female connector

Connects to the DTRB through cables

TOP2 DB26 female connector

Connects to the DCTB in the set-on-top subrack of the BTS3012 cabinet through cables

Page 21: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 21All rights reserved

GM51DCSU VERBSW6

SW9

SW14

SW13

SW12

SW7

SW10

SW8

SW5

SW4

SW3

SW11

SW2

SW1

Switches of DCSU

Page 22: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 22All rights reserved

DIP Switches

SW2–SW5 Function

All ON Main cabinet and

All OFF Extension cabinet

Remove the cable connected to the CC_IN of the DCSU of the Main

cabinet and plug it to CC_OUT of the main cabinet

Connect the DCS cable to the DCF port of the TOP of two cabinets

SW1 Description

All ON Main cabinet of the main cabinet group

All OFF Others

Page 23: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 23All rights reserved

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

he DCMB in the common subrac

k. The DCCU is a mandatory boa

rd. Only one DCCU can be confi

gured.

The DCCU performs the followin

g functions:

Transfers E1 signals.

Transfers the control signals f

or the fans.

Transfers the clock signals from the DAFU subrack.

Processes the power inputs t

hrough the EMI filter, and the

n transmits the power to the c

ommon subrack.

Page 24: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 24All rights reserved

Ports on the DCCU panel

POWER

DCCU

To_FAN

TO_TOP1

TRAN

Port Type Description

TRAN MD64 female connector

Importing E1 signals

To_FAN DB26 female connector

Connecting to the fan box through cables

TO_TOP1 MD64 female connector

Connecting to the DCTB in the set-on-top subrack of the BTS3012 through cables

POWER 3V3 power connector

Importing power to the common subrack

Page 25: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 25All rights reserved

Functions of DATU

The DATU can be installed in slot 2, 3, 4, or 7 of the

DCMB in the common subrack. The DATU is an opti

onal board. A maximum of two DATUs can be config

ured.

The DATU performs the following functions:

Controls the RET antenna.

Provides power for the TMA over the feeder.

Reports alarms related to the control of the RET a

ntenna.

Monitors the current from the feeder.

DATU

RUN

ACT

ALM

ANT0

ANT1

ANT2

ANT3

ANT4

ANT5

Page 26: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 26All rights reserved

Relation between boards and slot numbers

Board Slot No.

DTMU Slots 0 and 1

DEMU Slots 2, 3, 4,or 7

DATU Slots 2, 3, 4,or 7

DCSU Slot 5

DCCU Slot 6

Page 27: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 27All rights reserved

Signal Protection Subsystem

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)

D

M

L

C

D

E

L

C

D

E

L

C

D

S

A

C

DC

F

CK

B2

CK

B1

Page 28: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 28All rights reserved

Functions of DMLC

The DMLC is configured in slot 0, 1, or 2 of the set-on-

top subrack. The DMLC is an optional board, which is

used with the DEMU. Only one DMLC is required in ful

l configuration.

The DMLC performs the following functions:

Provides lightning protection for Boolean input and

output signals.

Provides lightning protection for analog signals that

are transmitted from the smoke sensor, water sens

or, door control sensor, infrared sensor, humidity an

d temperature sensor.

SWIN

SWOUT

DMLC

AIN

Page 29: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 29All rights reserved

Functions of DELC

The DELC is configured in slot 0, 1, or 2 of the set-

on-top subrack. These three slots are shared by th

e DELC and DMLC. The DELC is a mandatory boa

rd. At least one DELC should be configured.

The DELC provides lightning protection for 4 routes

of E1 signals. A maximum of three DELCs can be c

onfigured to provide lightning protection for 12 rout

es of E1 signals.

The DELC performs the following functions:

Provides lighting protection for E1 signals.

Transmits E1 signals to the DCCU, through whi

ch the signals are sent to the DTMU for process

ing.

DELC

TR

Page 30: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 30All rights reserved

Functions of DSAC

The DSAC is placed in slot 3 of the set-on-top subrack.

The DSAC is a mandatory board. Only one DSAC is r

equired in full configuration.

The DSAC performs the following functions:

Provides six Boolean alarm inputs.

Provides two CBUS3 signal outputs.

Provides two lightning protection arrester failure ala

rm inputs of the power supply.

Provides lightning protection for BITS clock signals.

DSAC

CO

M1

EA

CS

YN

CC

OM

2S

1+

S1

-S2

+S

2-

Page 31: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 31All rights reserved

Double transceiver subsystem (BTS3012 )Ⅱ

DTRU (Double Transceiver Unit)

DTRB

Page 32: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 32All rights reserved

Functions of DTRU (BTS3012 )Ⅱ Baseband Processing Part

Processes the signaling, such as coding, decoding, interleaving, de-

interleaving, modulation, and demodulation.

Supports RF loop test and switchover when loop test of phase-lock fails.

Amplifies the output power.

RF Transmitting Part

Demodulates the RF signals into baseband signals, and performs

frequency hopping.

Divides the received RF signals and performs receive diversity.

RF Receiving Part

Demodulates the RF signals into baseband signals, and performs

frequency hopping.

Divides the received RF signals and performs receive diversity.

Page 33: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 33All rights reserved

Voice A/DA/D8KHz, 13bit Speech

codingSpeech coding

SegmentationSegmentation

20ms

13kbit/sChannel codingChannel coding

InterleavingInterleaving Burst formattingBurst formattingEncryptionEncryption

22.8kbit/s

ModulationModulation

33.8kbit/s

Transmission

Voice Signal Processing

Page 34: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 34All rights reserved

Functional structure of DTRU (BTS3012 )Ⅱ

DTRU Baseband and RF Unit (DBRU)

DTRU Power Amplifier Unit (DPAU)

DTRU Power Supply Unit (DTPS)

DTMU

DTPS

DTRU

- 48V DC

DPAU

DBRUDAFU

Page 35: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 35All rights reserved

Panels on DTRU (BTS3012 )Ⅱ

There are two types of

DTRU: type A and type

B. The four LEDs on th

e DTRU panel indicate

the operating status of

the DTRU and other fu

nctional subsystems.

DTRU (type A) has 10

ports and DTRU (type

B) has 8 ports. These

ports exchanges signal

s with the RF front-end

subsystem.

DTRU panel (type

A) DTRU panel (type B)

Page 36: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 36All rights reserved

LEDs on the DTRU panel

LED Color Description Status Remarks

RUN Green Operating and power-on indicator of the DTRU

On There is power supply. However, the module is faulty.

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

Slow flash (on for 2 s and off for 2 s)

The module is starting.

Slow flash (on for 1 s and off for 1 s)

The module works normally.

Fast flash (on for 0.2 s and off for 0.2 s)

The DTMU is issuing configuration data to the DTRU.

ACT Green Operating indicator of the transceiver

On The DTRU is operating. (The DTMU issuing configuration data normally and the cells starts) All the channels on the two TRXs operate normally.

Off The communication between the DTRU and the DTMU is not established.

Slow flash (on for 1 s and off for 1 s)

A part of logical channels work normally (before and after TRX mutual aid).

ALM Red Alarm indicator On (including high-frequency flash)

Critical alarm (The module is faulty.)

Off The module is normal.

RF_IND Red RF indicator On There is voltage standing wave radio (VSWR) alarm.

Off Normal

Slow flash (on for 1 s and off for 1 s)

There is a radio link alarm.

Page 37: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 37All rights reserved

Ports on DTRU (type A) panel Port Type Remarks

TX1 N female connector

It is the output port for the signals from TRX1.• In transmit independency or transmit diversity mode, the TX port routes the signals

to the TX port of the module in the RF front-end subrack.• In PBT or wideband combination mode, the TX1 port routes the signals to the IN1

port.

IN1 SMA female connector

In PBT or wideband combination mode, the IN1 port is short-circuited with the TX1 port.

TCOM N female connector

In PBT or wideband combination mode, the TCOM port is used to output the combined signals from the IN1 and IN2 ports.

IN2 SMA female connector

In PBT or wideband combination mode, the IN2 port is short-circuited with the TX2 port.

TX2 N female connector

It is the output port for the signals from TRX2.• In transmit independency or transmit diversity mode, the TX port routes the signals

to the TX port of the module in the RF front-end subrack.• In PBT or wideband combination mode, the TX2 port routes the signals to the IN2

port.

RXM1 SMA female connector

• In receive independency or receive diversity mode, it is the input port for the main RF signal.

• In 4-way receive diversity mode, it is the input port for the diversity signal 1.

RXD1 SMA female connector

• In receive independency or receive diversity mode, it is the input port for the diversity RF signal.

• In 4-way receive diversity mode, it is the input port for the diversity signal 2.

RXM2 SMA female connector

• In receive independency mode, it is the input port for the main RF signal.• In 4-way receive diversity mode, it is the input port for the diversity signal 3.

RXD2 SMA female connector

• In receive independency mode, it is the input port for the diversity RF signal.• In 4-way receive diversity mode, it is the input port for the diversity signal 4.

PWR 3V3 power connector

Power input port

Page 38: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 38All rights reserved

Ports on DTRU (type B) panel

Port Type Remarks

TX1 N female connector It is the output port for the signals from TRX1.• In transmit independency or transmit diversity mode, the TX port routes the sig

nals to the TX port of the module in the RF front-end subrack.• In PBT or wideband combination mode, this port is suspended.

TCOM N female connector In PBT or wideband combination mode, the TCOM port is used to output the combined signals from the TX1 and TX2 ports.

TX2 N female connector It is the output port for the signals from TRX2.• In transmit independency or transmit diversity mode, the TX port routes the sig

nals to the TX port of the module in the RF front-end subrack.• In PBT or wideband combination mode, this port is suspended.

RXM1 SMA female connector

• In receive independency or receive diversity mode, it is the input port for the main RF signal.

• In 4-way receive diversity mode, it is the input port for the diversity signal 1.

RXD1 SMA female connector

• In receive independency or receive diversity mode, it is the input port for the diversity RF signal.

• In 4-way receive diversity mode, it is the input port for the diversity signal 2.

RXM2 SMA female connector

• In receive independency mode, it is the input port for the main RF signal.• In 4-way receive diversity mode, it is the input port for the diversity signal 3.

RXD2 SMA female connector

• In receive independency mode, it is the input port for the diversity RF signal.• In 4-way receive diversity mode, it is the input port for the diversity signal 4.

PWR 3V3 power connector

Power input port

Page 39: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 39All rights reserved

DTRU transmit modes

Transmit independency

Transmit diversity

PBT

Wideband combination

Page 40: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 40All rights reserved

DTRU transmit mode-transmit independency

TCOM

TRX0TRX0

TX

TRX1TRX1

TX

TX1

IN1

IN2

TX2

RXM1

RXD1

RXM2

RXD2

combinercombiner

Page 41: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 41All rights reserved

DTRU transmit mode-transmit diversity

TRX1TRX1

TRX0TRX0

TX

TX

TX1

IN1

TCOM

IN2

TX2

Man made multi way

combinercombiner

Page 42: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 42All rights reserved

DTRU transmit mode-PBT

TRX1TRX1

TRX0TRX0

TX

TX

TX1

IN1

TCOM

IN2

TX2

Same phase

combinercombiner

Page 43: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 43All rights reserved

DTRU transmit mode-wideband combination

TRX0TRX0

TX

TRX1TRX1

TX

TX1

IN1

TCOM

IN2

TX2

combinercombiner

Page 44: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 44All rights reserved

DTRU receive modes

Receive independency

Receive diversity

4-way receive diversity

Page 45: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 45All rights reserved

DTRU receive mode- Receive independency

TRX1TRX1

TRX0TRX0

TX

TX

TX1

IN1

TCOM

IN2

TX2

RXM1

RXD1

RXM2

RXD2

dividerdivider

combinercombiner

dividerdivider

Page 46: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 46All rights reserved

DTRU receive mode- Receive diversity

TRX0TRX0

TX

TRX1TRX1

TX

TX1

IN1

TCOM

IN2

TX2

RXM1

RXD1

RXM2

RXD2

combinercombiner

dividerdivider

dividerdivider

Page 47: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 47All rights reserved

DTRU receive mode- 4-way receive diversity

TRX0TRX0

TX

TRX1TRX1

TXdividerdivider

dividerdivider

TX1

IN1

TCOM

IN2

TX2

RXM1

RXD1

RXM2

RXD2

combinercombiner

Page 48: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 48All rights reserved

Intra structure of DTRU

TRX0TRX0

TX

TRX1TRX1

TX

TX1

IN1

TCOM

IN2

TX2

RXM1

RXD1

RXM2

RXD2

combinercombiner

dividerdivider

dividerdivider

Page 49: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 49All rights reserved

Functions of DTRB (BTS3012 )Ⅱ

The DTRB is placed in the DTRU subra

ck. The DTRB provides six slots to hou

se the DTRUs.

The DTRB connects the DCSU with the

DTRU.

The DTRB performs the following functi

ons:

Provides bus connection between th

e common subsystem and the doubl

e-transceiver subsystem.

Specifies the slot number and rack

number of the DTRU.

Transmits the in-position signals of t

he DTRUs to the DCSU.

Page 50: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 50All rights reserved

RF Front-End Subsystem (BTS3012 )Ⅱ

The functions of the BTS3012 RF front-end subsystem are pⅡerformed by the boards in the DAFU subrack.

The DAFU subrack can be configured with the DDPU, DCOM,

DFCU, DFCB, or the combination of these modules.

DDPU (Dual Duplexer Unit for DTRU BTS)

DCOM (Combining Unit for DTRU BTS)

DFCU (Filter Combiner Unit for DTRU BTS)

DFCB (Filter Combiner Unit for DTRU BTS)

Page 51: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 51All rights reserved

Functions of DDPU (BTS3012 )Ⅱ

The DDPU is configured in the DAFU subrack with the DCOM. The

DDPU is an optional module. You can choose to configure DDPU or

DFCU. Generally, three DDPUs are configured. If the DCOM is not

configured, a maximum of six DDPUs can be configured.

The DDPU performs the following functions:

Provides lightning protection through the ANT port.

Detects VSWR alarms in the antenna system.

Receives the gain control signals for the low noise amplifier.

Transmits multiple routes of RF signals from the transmitter to th

e antenna.

Receives signals from the antenna, amplifies and quarters these

signals, and then transmits them to the receiver of the DTRU.

Page 52: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 52All rights reserved

LEDs on the DDPU panel

RUNALM

VSWRA

RXA1

RXA2

RXA3

RXA4

RXB1

RXB2

RXB3

RXB4

DDPU

TXA

TXB

COM

POWER

VSWRB

ANTAANTB

LED Color Description Status Meaning

RUN Green Operating and power-on indicator of the DDPU

On There is power supply. However, the module is faulty.

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

Slow flash (on for 1s and off for 1s)

The module works normally.

Fast flash (on for 0.2s and off for 0.2s)

The DTMU is issuing configuration data to the DDPU or the DDPU is loading software programs.

ALM Red Alarm indicator

On (including high-frequency flash)

Alarms (including VSWR alarm). This indicates that there are faults.

Off No alarm

Slow flash (on for 1s and off for 1s)

The DDPU is starting or loading the latest application.

VSWRA Red VSWR alarm indicator for channel A

Slow flash (on for 1s and off for 1s)

There is a VSWR alarm with channel A.

On There is a critical VSWR alarm with channel A.

Off There is no VSWR alarm with channel A.

VSWRB Red VSWR alarm indicator for channel B

Slow flash (on for 1s and off for 1s)

There is a VSWR alarm with channel B.

On There is a critical VSWR alarm with channel B.

Off There is no VSWR alarm with channel B.

Page 53: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 53All rights reserved

Ports on the DDPU panel

RUNALM

VSWRA

RXA1

RXA2

RXA3

RXA4

RXB1

RXB2

RXB3

RXB4

DDPU

TXA

TXB

COM

POWER

VSWRB

ANTAANTB

Port Type Description

COM DB26 female connector Receiving control signals, communication signals, and clock signals from the DCTB of the BTS3012

POWER 3V3 power connector Power input port

TXA N female connector• It is the imput port for the signals received from the TX1 or TX2 po

rt from the DTRU.

TXB N female connector

• It is the input port for the combined signals from the TCOM port of the DTRU.

• It is the input port for the combined signals from the TX-COM port of the DCOM.

RXA1

SMA female connectorIt is the output port for the main RF signal received from the ANTA port. It is connected to the RXM1, RXD1, RXM2, or RXD2 port on the DTRU panel.

RXA2

RXA3

RXA4

RXB1

SMA female connectorIt is the output port for the diversity RF signal received from the ANTB port. It is connected to the RXM1, RXD1, RXM2, or RXD2 port on the DTRU panel.

RXB2

RXB3

RXB4

ANTA

DIN female connector

Antenna port for reception and transmission

• It is the input port for the RF signals received from the antenna.

ANTB

• It is the output port for the RF signals transmitted from the TXA port of the DDPU.

• It is connected to the indoor 1/2-inch jumper of the BTS3012 or to the Bias-Tee.

Page 54: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 54All rights reserved

Functions of the Fan Box The fan box forms a loop with the air inlet box to provide forced ventilation

and dissipation for the common subrack, DTRU subrack, and DAFU subra

ck.

The fan box performs the following functions:

Monitors the temperature at the air inlet of the cabinet and the tempera

ture in the fan subrack, and then adjusts the speed of the fans.

Communicates with the DTMU to adjust the speed of the fans and rep

ort alarms.

FANSTATE

COM

PWR

Page 55: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 55All rights reserved

LEDs on the fan box

LED Color Status Description

STATE Green Fast flash (on for

0.125 s and off

for 0.125 s)

The NFCB communicates with the

DTMU abnormally. There is no alarm.

Red Fast flash (on for

0.125 s and off

for 0.125 s)

An alarm is generated.

Green Slow flash (on for

1 s and off for 1

s)

The board operates normally.

Orange (red

and green)

On The software of the board is being

upgraded.

Green or red

or orange

Off There is no power supply or the board

is faulty.

Page 56: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 56All rights reserved

Chapter 1 OverviewChapter 1 Overview

Chapter 2 System ComponentsChapter 2 System Components

Chapter 3 Signal ProcessingChapter 3 Signal Processing

Chapter 4 Typical configurationChapter 4 Typical configuration

Page 57: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 57All rights reserved

Signal Flow of the BTS3012 Ⅱ

The BTS3012 signal flow is associated with the traffic and Ⅱsignaling of the BTS.

The BTS3012 signal flow consists of:Ⅱ

DL traffic signal flow

UL traffic signal flow

Signaling processing signal flow

Signal flow for cabinet groups

Page 58: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 58All rights reserved

DL Traffic Signal Flow of the BTS3012 Ⅱ

Page 59: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 59All rights reserved

DL Traffic Signal Flow The DL traffic signal flow is as follows:

The BSC sends E1 signals to the DELC through E1 cables. The DELC provides lightning protection for the received E1 signals, and then send

s the E1 signals to the DCTB. The DCTB sends the E1 signals to the DCCU through the TOP signal cable conne

cting the DCTB with the DCCU/DSCU. The DCCU sends the E1 signals to the DTMU through the ECMB. On receiving the signals, the DTMU converts the E1 signals through the DBUS. Th

e DTMU also assigns the data based on the data configuration on the OML. Then, the signals are sent to the DCSU and the DTRUs in DTRU subrack 0 through the ECMB.

The DCSU sends the signals to the DTRB in DTRU subrack 1 through the signal cable between the DCSU and the DTRB.

The DTRB sends the signals to the DTRUs in DTRU subrack 1. After receiving the signals, the DTRUs in the two DTRU subracks perform digital fil

tering, up-conversion, and filter amplification, and then send the signals to the DDPU/DFCU/DFCB.

The duplexer in the DDPU/DFCU/DFCB filters the signals from the DTRU, and then sends the signals to the antenna subsystem for transmission.

Page 60: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 60All rights reserved

UL Traffic Signal Flow of the BTS3012 Ⅱ

Page 61: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 61All rights reserved

UL Traffic Signal Flow

The UL traffic signal flow is as follows:

The antenna receives the signals from the MS. After being amplified by the

TMA, the signals are transmitted to the DDPU/DFCU/DFCB through the fee

der. The TMA is optional. It is used to compensate the feeder loss and enha

nce receive sensitivity of the DDPU/DFCU/DFCB antenna port.

The DDPU/DFCU/DFCB receives the UL signals and transmits the signals t

o the DTRUs in the two DTRU subracks after they are filtered by the duplex

er and amplified by the lower noise amplifier (LNA).

The DTRU in DTRU subrack 1 receives the signals from the DDPU/DFCU/D

FCB and transmits the signals to the DTRB after amplification and down-co

nversion.

The DTRB sends the signals to the DCSU.

Page 62: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 62All rights reserved

UL Traffic Signal Flow

The DCSU sends the signals to the DTMU through the ECMB. In additi

on, the DTRU in DTRU subrack 0 receives the signals from the DDPU/

DFCU/DFCB, and transmits the signals to the DTMU through the ECM

B after amplification and down conversion.

The DTMU backs up the E1 signals and converts the E1 signals throug

h the DBUS. The DTMU then sends the converted signals to the DCCU

through the ECMB.

The DCCU sends the signals to the DCTB through the TOP signal cable

connecting the DCTB with the DCCU/DSCU.

The DCTB sends the signals to the DELC.

The DELC provides lightning protection for the signals. Then, it sends th

e signals to the BSC through the E1 cables.

Page 63: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 63All rights reserved

Signaling Flow of the BTS3012 Ⅱ

Page 64: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 64All rights reserved

Signaling processing flow

The signaling processing flow is as follows:

The BSC sends the signaling data to the DTMU of the BTS.

After processing the signaling, the DTMU sends the signaling to the

DTRU and DDPU (DFCU or DFCB).

The DTRU and DDPU (DFCU or DFCB) report their board status to

the DTMU.

The DTMU obtains the status of the BTS3012 by collecting and ana

lyzing the states of all the boards. Then, it transmits the information

to the BSC through the Abis interface.

Page 65: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 65All rights reserved

Signal Flow of BTS3012 Cabinet Groups Ⅱ The signal flow of BTS3012 cabinet groups refers to the signal flow

between the main cabinet group and the extension cabinet groups.

The signal flow of cabinet groups involves clock signals and control

signals.

Bus connection between BTS3012 cabinet groups is shown as Ⅱfollows:

Page 66: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 66All rights reserved

Clock Signals

DTMUBoards in main

cabinet

Boards in slavecabinet

A-bis

Clock distributioncable between

cabinets

Page 67: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 67All rights reserved

Clock Signals Description

The clock signal flow includes the following steps:

The external reference clock is transmitted to the clock

module in the DTMU through the Abis interface

The clock module performs phase lock and frequency di

vision on the clock signals to generate different clock si

gnals for BTSs

The clock signals are transmitted to the modules in the

main cabinet such as the DTRU and the DDPU

The clock signals are transmitted to the modules in the

slave cabinets through the clock distribution cable

Page 68: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 68All rights reserved

Control Signals

The control signals refer to the CBUS1 signals, which are respo

nsible for the communication between the DTMUs in the main a

nd extension cabinet groups.

Page 69: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 69All rights reserved

Control Signals Description

The processing of CBUS1 signals is as follows:

The DTMU in the cabinet of the main cabinet group transmits t

he CBUS1 signals to the cabinets in the extension cabinet grou

ps, through signal conversion of relevant boards.

The cabinets in the extension cabinet groups transmit the CBU

S1 signals to the DTMUs in those cabinets, through signal con

version of relevant boards.

Page 70: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 70All rights reserved

Chapter 1 OverviewChapter 1 Overview

Chapter 2 System ComponentsChapter 2 System Components

Chapter 3 Signal ProcessingChapter 3 Signal Processing

Chapter 4 Typical configurationChapter 4 Typical configuration

Page 71: GSM HUAWEI BTS3012 Hardware Structure

HUAWEI TECHNOLOGIES CO., LTD. Page 71All rights reserved

Functions and features of BTS3012

BTS3012 hardware structure

System Signal Flow

Typical configuration

SummarySummary

Page 72: GSM HUAWEI BTS3012 Hardware Structure

www.huawei.com

Thank You


Top Related