G LI 001 BTS3012 Hardware Structure 20060614 a 1.0

8/12/2019 G LI 001 BTS3012 Hardware Structure 20060614 a 1.0

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HUAWEI TECHNOLOGIES CO., LTD. All rights reserved

www.huawei.com

Internal

OME201102 HUAWEI BTS3012

Hardware 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 BTS

Master the BTS hardware structure

Master the cable connection of BTS


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References

BTS3012 Technical Manual

BTS3012 Installation Manual

BTS3012 User Manual


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Chapter 1 Overview

Chapter 2 System Components

Chapter 3 Signal Processing

Chapter 4 Antenna and Feeder System

Chapter 5 Typical configuration


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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

MAP

TUP,ISUPMS

MS

MS


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Features and Functions

Support GSM800M850M900M1800M1900M

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


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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


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Chapter 1 Overview






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Hardware structure

TMA TMA

DTRU DAFU

Antenna and feeder

subsystemForepart of RF

Subsystem

TMA TMA

DTRU DAFU

TMA TMA

DTRU DAFU

Double transceiver

subsystem

DATU

Um Interface

DATU

fiber

E1

Abis Interface

M

E

L

C

Common subsystem

NFCB

Metro 100

DTMU

DEMU

E1

BITSMonitor TBUS/DBUS/CBUS

MS

FH_BUS

Extension

cabinet


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BTS3012 Cabinet and BoardsD D D D

Wiring & Air Inlet

Wiring

D

DPU

DCOM

DCOM

DDPU

DCOM

D

TRU

D

TRU

D

TRU

D

TRU

D

TRU

D

TRU

Wiring

FAN

Air Inlet

ML

C

Power and

E MC

Transmission Unit

DDPU

EL

C

EL

C

SA

C

Transmission Unit

DTM

U

DTM

U

DEM

U

D

C

CU

D

C

SU

D

A

TU


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BTS3012 Cabinet and Boards

Abbreviations DescriptionDTRU 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 BTSDCOM 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


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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


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Functions of DTMU

Providing the external GPS input, the BITS synchronized clock

input

Providing 4-route or 8-route E1 inputbackup 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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Structure of DTMU

MCK

OML

DBUS

CBUS2

Clock

BIUDTRU

DTMU

BSC

MCUMMI

LMT

Abis

External

synchronized clock

Subrack number

and clock


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Indicators on DTMU

Indicator Color Description Status Meaning

RUN Green Indicates

operation

Slow flash (0.25 Hz) OML is blocked

Slow flash (0.5 Hz) Normal

Fast flash at uncertain

intervals

BSC data loading

Off Power failure of the board

ACT Green Indicates

whether the

board is

active or

standby

Off Standby

On Active

PLL Green Indicates theclock status

Off Abnormal

On Free-run

Fast flash (4 Hz) Pull-in

Fast flash (1 Hz) Lock

LIU1 Green Indicates the

transmissionstatus of E1

port 1 and

port 5

Off E1 port 1 is normal when SWT is out

E1 port 5 is normal when SWT is onOn E1 port 1 near end alarm occurs when SWT is out

E1 port 5 near end alarm occurs when SWT is on

Fast flash (4 Hz) E1 port 1 remote end alarm occurs when SWT is out

E1 port 5 remote end alarm occurs when SWT is on

RUN

ACT

PLL

LIU1

LIU2

LIU3

LIU4

SWT

ALM

RST

MMI

T2M

FCLK

T13M

DTMU


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transmission status of

E1 port 2 and port 6


E1 port 6 is normal when SWT is on

On E1 port 2 near end alarm occurs when SWT is out


Fast flash (4Hz)

E1 port 2 remote end alarm occurs when SWT is outE1 port 6 remote end alarm occurs when SWT is on






On E1 port 3 near end alarm occurs when SWT is outE1 port 7 near end alarm occurs when SWT is on

Fast flash (4

Hz)

E1 port 3 remote end alarm occurs when SWT is out







On E1 port 4 near end alarm occurs when SWT is out


Fast flash (4

Hz)

E1 port 4 remote end alarm occurs when SWT is out


SWT Green Indicates handover

status of E1

Off LIU1 to LIU4 indicate the transmission status of E1 port

1 to 4.

On LIU1 to LIU4 indicate the transmission status of E1 port

5 to 8.

ALM Red Alarm indicators Off No hardware alarm

On Hardware alarm

Indicators on DTMU

RUN

ACT

PLL

LIU1

LIU2

LIU3

LIU4

SWT

ALM

RST

MMI

T2M

FCLK

T13M

DTMU


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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

DMLC DEMU

CBUS3Monitor signal


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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 thecabinet. There is only one DCSU

and it is mandatory

The DCSU transfers signals for

the combined cabinet and cabinet

group between the common

subrack and the cabinet top

subrack

DCMB

DTMU

DCSU

DTRB

DCTB

DCCU

DEMU

DATU


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The interfaces on the DCSU panel

CC_IN

CC_OUT

TO_DTRB

TOP2

DCSU

Silk- Screen Type Description

CC_OUT MD64 (female) For cable output from the combined cabinet

CC_IN MD64 (female) For cable input to the combined cabinet

To_DTRB MD64 (female) Connecting to the DTRB through cables

TOP2 DB26 (female)Connecting to the cabinet top subrack through

cables


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GM51DCSU VERBSW6

SW9

SW14

SW13

SW12

SW7

SW10

SW8

SW5

SW4

SW3

SW11

SW2

SW1

Switch of DCSU


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Functions of DCCU

The DCCU is placed in slot 6 of

the common subrack. There is

only one DCCU and it is

mandatory

Converting the input and output

signals of the common subrack.

Inputting the power of the

common subrack

Providing EMI filtering

DCMB

DTMU

DCCU

NFCB

DCTB

DCSU

DEMU

DATU


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The interfaces on the DCCU panel

POWER

DCCU

To_FAN

TO_TOP1

TRAN

Silk-

ScreenType Description

TRANMD64

(female)For E1 signal input

To_FANDB26

(female)

Connects to the fan panel through cables

TO_TOP1MD64

(female)

Connects to the cabinet top subrack through

cables

POWER 3V3 For power input of the common unit


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Functions of 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

Transmitting the remote electrical tilt unit (RET)

control signals

Feeding the TMA

Communicating with the DTMU through CBUS3 for

control and alarm report

DATU

RUN

ACT

ALM

ANT0

ANT1

ANT2

ANT3

ANT4

ANT5


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Cabinet Top Access 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

DCF

CKB2

CKB1


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Function of DMLC

The DMLC is placed in slots 0 to 2 of the cabinet top

subrack with the DELC. There is only one DMLC and

it is optional DMLC

Thirty-two-route Boolean value input

Six-route Boolean value output

Four-route analog input

Smoke/water/access

control/infrared/humidity/temperature sensor signal

input

SWIN

SWOUT

DMLC

AIN


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Function of DELC

The DELC is placed in slots 0 to 2 of the cabinet

top subrack with the DMLC

The DELC is mandatory and there is one DELC

under minimum configuration

Without the DMLC, there are maximum three

DELCs, supporting up to 12 routes of protected E1

signals

DELC

TR


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Function of DSAC

The DSAC is placed in slot 3 of the cabinet top

subrack. There is only one DSAC and it is mandatory

Six-route Boolean value input.

Two-route CBUS3 output

Two-route input of lightning protection arrester failure

alarm

Access protection of BITS clock input

DSAC

COM1

EAC

SYNC

COM2

S1+S1-S2+S2-


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Double transceiver subsystem

DTRUDouble Transceiver Unit

DTRB

DTRB

DTRU

DTRU

DTRU

DTRU

DTRU

DTRU


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Functions of DTRU

RF subsystem transmit part. Converts the basband signals on the two

TRXs to the RF signals. Supports up-frequency conversion of the signals

and RF frequency hopping.Filters, amplifies, and outputs the combined

signals

RF subsystem receive part.Devides and modulates the RF signals on thetwo TRXs.Supports transmit receive and RF frequency hopping

Baseband processing part.Processes signals.Supports coding and

decoding, interleaving and de-interleaving, modulation and

demodulation.Supports voice fax services.Supports data services in

Phase II, GPRS services, and EDGE services.Supports transmit diversity

and 4-way receive diversity.Amplifies the output power


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Functional structure of DTRU

DTRU Baseband and RF Unit (DBRU)

DTRU Power Amplifier Unit (DPAU)

DTRU Power Supply Unit (DTPS)

DTMU

DTPS

DTRU

- 48V DC

DPAU

DBRU

DAFU


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Indicators on DTRU


RUN Green Indicates the running

and power-on of the

DTRU

On There is power supply or the board is faulty.

Off There is no power supply and the board is

faulty.

Slow flash (0.25

Hz)

The board is starting.

Slow flash (0.5 Hz) The board is running.

Fast flash (2.5 Hz) The DTMU is sending configuraiton

parameters to the DTRU.

ACT Green Indicates the TRX isworking

On The board is running (the DTMU sendsconfiguration parameters to the DTRU

correctly and the cell is starting). All the

channels on the two carriers can work

normally.

Off Communication between DTRU and DTMU is

not set up

Slow flash (0.5Hz) Only parts of the logic channels are working

normally (including after TRX mutual aid).

ALM Red Indicates alarm On (includinghigh-frequency

flash)

Critical alarm occurs to the board.

Off The board is normal.

RF_IND Red RF interface

indicators

On Standing wave alarm

Off Normal

Slow flash (0.5 Hz) RL alarm

DTRU

TX1

IN1

TCOM

IN2

TX2

RST

RUN

ACT

ALM

RF_IND

PWR

RXM1

RXD1

RXM2

RXD2


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Indicators on DTRU

Interface Type Description

TX1 N (male) TX1 output signals:

Output to the forepart of the RF when not in combiner

Output to IN1 in combiner

IN1 SMA (female) Connects to TX1 in combiner

TCOM N (male) Combines and outputs IN1 and IN2 or implements PBT combined

outputIN2 SMA (female) Connects to TX2 in combiner

TX2 N (male) TX2 output signals:

Output to the forepart of the RF when not in combiner

Output to IN2 in combiner

RXM1 SMA (female) Main or diversity 1 receive port of carrier 1

RXD1 SMA (female) Diversity 1 or 2 receive port of carrier 1

RXM2 SMA (female) Main receive port of carrier 2 or Diversity 3 receive port of carrier 1

RXD2 SMA (female) Diversity receive port of carrier 2 or Diversity 4 receive port of

carrier 1

PWR 3V3 Power supply

DTRU

TX1

IN1

TCOM

IN2

TX2

RST

RUN

ACT

ALM

RF_IND

PWR

RXM1

RXD1

RXM2

RXD2


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DTRU transmit mode

Transmit independence

Transmit diversity

PBT

Wideband transmit combination


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DTRU transmit mode-transmit independence

TCOM

TRX0

TX

TRX1

TX

TX1

IN1

IN2

TX2

RXM1

RXD1

RXM2

RXD2

combiner


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DTRU transmit mode-transmit diversity

TRX1

TRX0

TX

TX

TX1

IN1

TCOM

IN2

TX2

Man made multi way

combiner


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DTRU transmit mode-PBT

TRX1

TRX0

TX

TX

TX1

IN1

TCOM

IN2

TX2

Same phase

combiner


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DTRU transmit mode-wideband transmit combination

TRX0

TX

TRX1

TX

TX1

IN1

TCOM

IN2

TX2

combiner


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DTRU receive mode

Receive independence

Receive diversity

4-way receive diversity


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DTRU receive mode- Receive independence

TRX1

TRX0

TX

TX

TX1

IN1

TCOM

IN2

TX2

RXM1

RXD1

RXM2

RXD2

divider

combiner

divider


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DTRU receive mode- Receive diversity

TRX0

TX

TRX1

TX

TX1

IN1

TCOM

IN2

TX2

RXM1

RXD1

RXM2

RXD2

combiner

divider

divider


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DTRU receive mode- 4-way receive diversity

TRX0

TX

TRX1

TX

divider

divider

TX1

IN1

TCOM

IN2

TX2

RXM1

RXD1

RXM2

RXD2

combiner


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Intra structure of DTRU

TRX0

TX

TRX1

TX

TX1

IN1

TCOM

IN2

TX2

RXM1

RXD1

RXM2

RXD2

combiner

divider

divider


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Functions of DTRB

The DTRB is placed in the DTRU

subrack. It has six slots, each

holding one DTRU

The DTRB provides connections

between the DCSU and the DTRU.All the onsite signals are provided to

the DCSU through the DTRB

DTRB

DTRU

DTRU

DTRU

DTRU

DTRU

DTRU


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Front-End of the RF Subsystem

DDPU (Dual Duplexer Unit for DTRU BTS)

DCOM (Combining Unit for DTRU BTS)

NBBI

D

C

O

M

D

D

P

U

D

C

O

M

D

D

P

U

D

C

O

M

D

D

P

U

1 2 3 4 50


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Functions of DDPU

The DDPU is intermixed with the DCOM in the DAFU subrack

of the forepart of RF subsystem. It is indispensable. Generally,

the number of DDPU is one at least and three at most. Without

the DCOM, there can be at most six DDPUs

Sending multi RF signals from the transceiver in the DTRU tothe antenna through the duplexer

Sending signals from the antenna after amplifying and

quartering them to the transceiver in the DTRU

Detecting standing wave alarms in the Antenna Feeder system Receiving the gain control of the low noise amplifier


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Functional structure of the DDPU

ANTB

TXA

TXB

RXA4

duplexer divider duplexer divider

ANTA

RXA1

RXA2RXA3

RXB1RXB2RXB3RXB4


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Indicators on DDPU


RUN Green Indicates the DDPU is

running and powerd on

On There is power supply and the board is faulty.

Off There is no power supply or the board isfaulty.

Slow flash (0.5 Hz) The board is running normally.

Fast flash (2.5 Hz) The DTMU is sending configuration

parameters to the DDPU or the DDPU isloading software programs.

ALM Red Indicates an alarm On (including high-

frequency flash)

There is alarm(including standing wave alarm)

and the board is faulty.

Off No fault

Slow flash (0.5 Hz) The board is starting or loading the newest

application programs

VSWRA Red Indicates a standing

wave alarm of ChannelA

Slow flash (0.5 Hz) Standing wave alarm occurs to Channel A

On Standing wave critical alarm occurs to

Channel A

Off No standing wave alarm occurs to Channel A

VSWRB Red Indicates a standing

wave alarm of Channel

B

Slow flash (0.5 Hz) Standing wave alarm occurs to Channel B

On Standing wave critical alarm occurs to

Channel B

Off No standing wave alarm occur to Channel B

RUN

ALM

VSWRA

RXA1

RXA2

RXA3RXA4

RXB1

RXB2

RXB3

RXB4

DDPU

TXA

TXB

COM

POWER

VSWRB

ANTA

ANTB


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Interface on DDPU

Interface Type DescriptionCOM DB26

(female)

Sends to the DDPU control signals, communication signals,

clock signals and subrack number

POWER 3V3 Power supply input

TXA N (male) Input of the TX signals sent from the DTRU

Input of the DCOM combining signals

TXB N (male) Input of the TX signals sent from the DTRU

Input of the DCOM combining signals

RXA1 SMA (female) Main 1 output port




RXB1 SMA (female) Diversity 1 output port

RXB2 SMA (female) Diversity 2 output portRXB3 SMA (female) Diversity 3 output port

RXB4 SMA (female) Diversity 4 output port

ANTA DIN (female) RF jumper port

ANTB DIN (female) RF jumper port

RUN

ALM

VSWRA

RXA1

RXA2

RXA3RXA4

RXB1

RXB2

RXB3

RXB4

DDPU

TXA

TXB

COM

POWER

VSWRB

ANTA

ANTB


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Functions of DCOM

The DCOM is placed in the DAFU subrack

with the DDPU

The DCOM is optional and there are a

maximum three DCOMs. The DTRU

combines two carriers into one channel. TheDCOM is required when the DTRUs are

insufficent

The DCOM combines the 2-route DTRU

transmission signals and outputs them to the

DDPU

DCOM

TX-COM

TX2

TX1

ONSHELL


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Interfaces on DCOM

Interface Type Description

ONSHEL

L

DB26

(female)

For indentification of the board type of DCOM

and on-site status

TX

COM

N (male) Output of combining signals from the DCOM

to DDPU

TX1 N (male) TX signal input from the DTRU to DCOM

TX2 N (male) TX signal input from the DTRU to DCOM


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Functions of FAN BOX

The FAN BOX forms a loop with the air inlet box to provide forcedventilation and dissipation for the common subrack, the DTRU subrack,

and the DAFU subrack

The FAN Box is mandatory with four independent axial flow fans. The

fans' speed and running status are controlled by the Fan Controlling and

Monitoring Board

FANSTATE

COMPWR


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Indicators on FAN BOX

Indicator Color Status Meaning

STATE Green Fast flash (4 Hz) Communication between the NFCB

and the DTMU is abnormal. There is

no alarm

Red Fast flash (4 Hz) Alarm occurs to the board

Green Slow flash (0.5

Hz)

The board is running normally

Orange (red

and green)

On The board software is being ungraded

Green or red or

orange

Off There is no power supply and the

board is faulty


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Chapter 1 Overview






55/86


System Signal Flow

the signal flow of the service and signaling include

DL Signal Flow

UL Signal Flow

Signaling Processing Signal Flow

Clock Signal Flow

Combined Cabinet Signal Flow


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DL Signal Flow

D

D

P

U

Um

BSC

BTS3012 Cabinet

MSAntennaFeeder

Abis

D

T

R

U

DT

M

U


57/86


DL Signal Flow

The DL signal flow includes the following steps:

The DTMU receives the service data from the BSC,

exchanges and processes it, and then transfers it to the

DTRU

The DTRU performs digital filtering, up conversion, and

filter amplification of the signals and sends the signals to

the DDPU

The duplexer in the DDPU filters the signals sent from the

DTRU and transmits the signals through antennas andfeeders


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UL Signal Flow

D

A

F

U

Um

BSC

BTS3012 Cabinet

MSAntennaFeeder

Abis

D

T

R

U

DT

M

U


59/86


UL Signal Flow

The UL signal flow includes the following steps:

The antenna receives the signals transmitted from the MS. After being

amplified by the TMA, the signals are transmitted to the DDPU through

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

and enhance receiver sensitivity of the DDPU antenna port

The DDPU receives the signals and transmits the signals to the DTRU

after they are filtered by the duplexer and amplified by the LNA

The DTRU receives the signals and transmits the signals to the DTMU

after amplification and down conversion. The DTMU then transmits thesignals to the BSC through the Abis interface


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BTS3012

DDPUDTRUDTMU

BSCAbis


61/86



The signaling processing signal flow includes the following steps:

The Abis interface board receives the signaling data from the BSC

and transmits the data to the DTMU

The DTMU performs decision and processing on the signaling and

transmits the signaling to the DTRU and DDPU

The DTRU and DDPU report board status to the DTMU

The DTMU obtains the status of the BTS3012 by collecting and

analyzing the status of all boards and transmits the information to

the BSC through the Abis interface


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Clock Signal Flow

DTMUBoards in main

cabinet

Boards in slave

cabinet

A-bis

Clock distributioncable between

cabinets


63/86


Clock Signal Flow 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

division on the clock signals to generate different clock

signals 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 theslave cabinets through the clock distribution cable


64/86


Chapter 1 Overview






65/86


Antenna Feeder subsystem

Antenna

TMA

Antenna

support

Jumper

Jumper

Feeder

Jumper

Antenna

Feeder

Jumpers

TMA


66/86


Antenna

In mobile communications systems, the antenna consists of an

array of element antennas, as shown in Figure

Element

antenna

Feeding

network

Antenna

connector

Directional antenna Omnidirectional antenna

Feeding

network

Element

antenna

Feeding

network

Antenna

connector


67/86


Antenna

BTS3012 antennas are classified:

By radiation features in horizontal directions: omnidirectional

antennas and directional antennas

By polarization features: single polarization antennas and dual

polarization antennas

Omnidirectional

antennaSingle polarization

antenna

Dual polarization

antenna


68/86


Lightning Arrester is used to

prevent the equipment from being

damaged by the lightening current

inducted by the core line of the

feeder

feeder

jumper

Lightning Arrester

Lightning Arrester


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Types of Main Feeder

7/8 inch

Cable loss=0.043dB/m

5/4 inch

Cable loss=0.032dB/m

1/2 inch jumper

Cable loss=0.11dB/m

Used between the antenna and the main feeder

Between the antenna and the tower-top amplifier

Between the cabinet and the lightning arrester


70/86


TMA

The tower mounted amplifier (TMA) is a low noise amplification module

installed on the tower top. The TMA is optional. The triplex TMA is usually

used and installed close to the antenna. The triplex TMA consists of triplex

filter, low noise amplification, and feeder

Lowernoise

amplific-ation

Sending

filter

Receivingfilter

Bypass

DC

BTS

TMA

Feeder

Receivingfilter


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Antenna Pattern

The antenna pattern describes the radiating abilities of

antennas in all directions

360

Omni Antenna Directional antenna

120 90 65


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Polarization

Two main types of polarization

Vertical polarization

Horizontal polarization

The types of antenna divided by

polarization

Single polarized antenna

Vertical polarization for GSM

One port for one feeder

Dual polarized antenna

+45 degree and -45 degree

Two ports for two feeders


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Chapter 1 Overview






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Configuration Principles

The configuration principles of the BTS3012 cabinet are as follows:

The minimum antenna rule

use as few as possible antennas for cell configuration.

The minimum cabinet rule

use as few as possible cabinets for cell configuration.

The complete synchronous cell rule

all TRXs of a synchronous cell are configured in the same cabinet group

The basic cabinet priority rule

TRXs are configured in the basic cabinet in preference, and the numberof TRXs in the basic cabinet is not less than that in any extension cabinet


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Configuration Principles

The BTS3012 supports the omnidirectional coverage and the directional

coverage.

The BTS3012 supports the combination of two cabinets to form one group

and the combination of three cabinet groups.

The BTS3012 supports the transmit diversity and 4-way diversity receive.

The DCOM combines two carriers into one channel (the two-into-one

function). The DCOM is required when the DTRUs are not sufficient.

The BTS3012 uses DTRU. One single cabinet supports up to 12 TRXs in

full configuration.

The maximum number of carriers is eight in a cell with a pair of dual

polarization antennas or two omnidirectional antennas of a single

sectorized cell


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Typical configuration S1/1/1

transmit independence mode

S1/1/1 transmit independence mode

Each cell is configured one DTRU and

one DDPU.

The connection for one cell is showed

in the right slide BSC data configuration should be

transmit independence modereceive

independence mode

Cabinet Top powerdBm46 or

47.8-1.0

DDPU

TX B

RXB1

RXA1

RXA2

RXA3

RXA4

RXB2

RXB3

RXB4

TX A

DTRU

TX 1

TCOM

RXM 1

RXM 2

RXD 1

RXD 2

TX 2

IN2

IN 1


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transmit diversity+4-way receive diversity

S1/1/1 transmit diversity+4-way

receive modeeach cell is

configured one DTRU and two

DDPU

BSC data configuration should be transmit diversity mode

4-way receive mode

Cabinet Top powerdBm

46 or 47.8-1.0

DTRU

DDPU

TX B

RXB1

RXA1

RXA2

RXA3

RXA4

RXB2

RXB3

RXB4

TX A

DDPU

TX B

RXB1

RXA1

RXA2

RXA3

RXA4

RXB2

RXB3

RXB4

TX A

TX 1

TCOM

RXM 1

RXM 2

RXD 1

RXD 2

TX 2

IN2

IN 1


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Typical configurationS2/2/2

transmit independence mode

S2/2/2 transmit independence mode

Each cell is configured one DTRU and

one DDPU

The connection for one cell is showed in

the right slide BSC data configuration should be

transmit independence modereceive

diversity mode

Cabinet Top powerdBm46 or47.8-1.0

DDPU

TX B

RXB1

RXA1

RXA2

RXA3

RXA4

RXB2

RXB3

RXB4

TX A

DTRU

TX 1

TCOM

RXM 1

RXM 2

RXD 1

RXD 2

TX 2

IN2

IN 1


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Typical configurationS2/2/2

PBT mode

S2/2/2 PBT modeeach cell is

configured two DTRU and one

DDPU

The connection for one cell isshowed in the right slide

BSC data configuration should be

PBT mode

receive independence mode

Cabinet Top powerdBm49

DDPU

TX B

RXB1

RXA1

RXA2

RXA3

RXA4

RXB2

RXB3

RXB4

TX A

DTRU

TX 1

TCOM

RXM 1

RXM 2

RXD 1

RXD 2

TX 2

IN2

IN 1

DTRU

TX 1

TCOM

RXM 1

RXM 2

RXD 1

RXD 2

TX 2

IN2

IN 1


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wideband transmit combination mode

S4/4/4 wideband transmit combination

modeeach cell is configured two

DTRU and one DDPU

BSC data configuration should be

wideband transmit combination mode receive diversity mode

Cabinet Top powerdBm46 or

47.8-3.3-1.0

DDPU

TX B

RXB1

RXA1

RXA2

RXA3

RXA4

RXB2

RXB3

RXB4

TX A

DTRU

TX 1

TCOM

RXM 1

RXM 2

RXD 1

RXD 2

TX 2

IN2

IN 1

DTRU

TX 1

TCOM

RXM 1

RXM 2

RXD 1

RXD 2

TX 2

IN2

IN 1


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Typical Configuration S1/2/1

S1/2/1,cell1 and cell 3 need

share one DTRU, cell 2 need

configure one DTRU and one

DDPU.

BSC data configurationshould be

DTRU1transmit

independence mode

receive independence mode

DTRU2transmit

independence mode

receive independence

diversity mode DTRU

TX 1

TCOM

RXM 1

RXM 2

RXD 1

RXD 2

TX 2

IN2

IN 1

DDPU

TX B

RXB1

RXA1

RXA2

RXA3

RXA4

RXB2

RXB3

RXB4

TX A

DDPU

TX B

RXB1

RXA1

RXA2

RXA3

RXA4

RXB2

RXB3

RXB4

TX A

DDPU

TX B

RXB1

RXA1

RXA2

RXA3

RXA4

RXB2

RXB3

RXB4

TX A

DTRU

TX 1

TCOM

RXM 1

RXM 2

RXD 1

RXD 2

TX 2

IN2

IN 1


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S8/8/8 cell 1 and cell 3

are configured 4

DTRU,2 DCOM and 1

DDPU

BSC data configurationshould bewideband

transmit combination

modereceive diversity

mode

Cabinet top power

dBm46 or 47.8

-3.3-3.3-1.0 DTRU

TX 1

TCOM

TX 2

IN2

IN 1

TX 2

TX1

DTRU

TX 1

TCOM

TX 2

IN2

IN 1

Tx-com

DTRU

TX 1

TCOM

TX 2

IN2

IN 1

DDPU

TX B

RXB1

RXA1

RXA2

RXA3

RXA4

RXB2

RXB3

RXB4

TX A

TX 2

TX1

DTRU

TX 1

TCOM

TX 2

IN2

IN 1

Tx-com


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S8/8/8 cell2 isconfigured 4 DTRU,2

DCOM and 2 DDPU, cell

2 need cross the cabinet

BSC data configuration

should bewideband

transmit combination

modereceive diversity

mode

Attention

only supportfrequency hopping

DTRU

TX 1

TCOM

TX 2

IN2

IN 1

DDPU

TX B

RXB1

RXA1

RXA2

RXA3

RXA4

RXB2

RXB3

RXB4

TX A

TX 2

TX1

DTRU

TX 1

TCOM

TX 2

IN2

IN 1

Tx-com

RF-EX1

RF-EX2

RF-EX3

RF-EX4

DTRU

TX 1

TCOM

TX 2

IN2

IN 1

DDPU

TX B

RXB1

RXA1

RXA2

RXA3

RXA4

RXB2

RXB3

RXB4

TX A

TX 2

TX1

DTRU

TX 1

TCOM

TX 2

IN2

IN 1

Tx-com

RF-EX1

RF-EX2

RF-EX3

RF-EX4


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Combined Cabinet Signal Flow

The connection of the signal cables of the combined cabinet is as

follows:

The main and slave cabinets are connected by the data cables,

control cables, and clock cables

The main and slave combined cabinets are connected by the clockcables and control cables

The main and slave cabinets and combined cabinets require the

DIP switches

Slave

cabinet

of main

cabinet

group

Main

cabinet

of main

cabinet

group

Maincabinet

of

slave

cabinet

group

Slavecabinet

of

slave

cabinet

group

Data cable

Clock cable

Control cable

Clock cable

Control cableData cable

Clock cable

Control cable


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Functions and features of BTS3012

BTS3012 hardware structure Antenna and feeder system

Typical configuration

Summary


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Thank You

G LI 001 BTS3012 Hardware Structure 20060614 a 1.0

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