BTS 3012

Internal

BTS3012 ISSUE 1.0

HUAWEI TECHNOLOGIES CO., LTD.

www.huawei.com

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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 Um Interface

MS

BTS3012

BSC A Interface

MS BTS3012

BTS3012

MSC/VLR M AP MAP

HLR/AUC/EIR

BTS3012 MS

PSTN ISDN PSPDN

TUP,ISUP

SMC/VM

OMC

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


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

up to 12 carriers with 6DTRU.  Support EDGE. Upto full TS MCS9 for EGPRS.  Transmit diversity(3db gain)  4-receive diversity(BTS sensitivity reaches up to -117dbm)  Support PBT(Power Boost technology) (DL gain 2db)  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.  Bus bandwidth up to 6Mbps, GERAN hardware compatibility.


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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


Double transceiver subsystem

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Forepart of RF Antenna and feeder Subsystem subsystem

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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

Input

D C O M

D D P U

D T R U

D T R U

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


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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

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 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.


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Structure of DTMU DTMU LMT

MMI

CBUS2

MCU

OML BSC

Abis

External synchronized clock


DBUS

BIU

DTRU

Clock MCK

Subrack number and clock

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Indicators on DTMU Indicator Color Description Status RUN Green Indicates Slow flash (0.25 Hz) operation Slow flash (0.5 Hz) Fast flash at uncertain intervals Off Off On

ACT

Green Indicates whether the board is active or standby

PLL

Green Indicates the Off clock status On Fast flash (4 Hz) Fast flash (1 Hz) Green Indicates the Off transmission status of E1 On port 1 and port 5 Fast flash (4 Hz)

LIU1


Meaning OML is blocked Normal BSC data loading Power failure of the board Standby Active

Abnormal Free-run Pull-in Lock E1 port 1 is normal when SWT is out E1 port 5 is normal when SWT is on E1 port 1 near end alarm occurs when SWT is out E1 port 5 near end alarm occurs when SWT is on E1 port 1 remote end alarm occurs when SWT is out E1 port 5 remote end alarm occurs when SWT is on

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Indicators on DTMU Indicator Color Description Status LIU2 Green Indicates the Off transmission status of E1 port 2 and port 6 On Fast flash (4 Hz) LIU3

Green Indicates the Off transmission status of E1 port 3 and port 7 On Fast flash (4 Hz)

LIU4

Green Indicates the Off transmission status of E1 port 4 and port 8 On Fast flash (4 Hz)

SWT

ALM

Green Indicates handover status of E1

Red

Alarm indicators

Meaning E1 port 2 is normal when SWT is out E1 port 6 is normal when SWT is on E1 port 2 near end alarm occurs when SWT is out E1 port 6 near end alarm occurs when SWT is on E1 port 2 remote end alarm occurs when SWT is out E1 port 6 remote end alarm occurs when SWT is on E1 port 3 is normal when SWT is out E1 port 7 is normal when SWT is on E1 port 3 near end alarm occurs when SWT is out E1 port 7 near end alarm occurs when SWT is on E1 port 3 remote end alarm occurs when SWT is out E1 port 7 remote end alarm occurs when SWT is on E1 port 4 is normal when SWT is out E1 port 8 is normal when SWT is on E1 port 4 near end alarm occurs when SWT is out E1 port 8 near end alarm occurs when SWT is on E1 port 4 remote end alarm occurs when SWT is out E1 port 8 remote end alarm occurs when SWT is on

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.

Off On

No hardware alarm Hardware alarm


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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. 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


DEMU

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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 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

DTRB DCSU DCTB DEMU

DATU

 Commuicate between DTMU and

DTRU


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The interfaces on the DCSU panel Silk- Screen

CC_OUT

Type

MD64 (female)

Description

DCSU

For cable output from the combined cabinet CC_OUT

CC_IN

MD64 (female)

For cable input to the combined cabinet CC_IN

To_DTRB

MD64 (female)

Connecting to the DTRB through cables TO_DTRB

TOP2

DB26 (female)

Connecting to the cabinet top subrack through cables TOP2


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Switch of DCSU GM51DCSU VERB

SW6 SW9

SW7 SW10 SW8 SW5

SW14

SW4

SW13

SW3

SW12

SW2 SW11 SW1


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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

DTMU NFCB DCMB

 DTMU communicate with DELC

DCCU DCTB DCSU

through DCCU(TRAN)  DTMU communicate with DAFU

through DCCU(Top-1)

DEMU DATU

 Inputting the power of the

common subrack


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The interfaces on the DCCU panel Silk-Screen

Type

Description

DCCU

TRAN

MD64 (female) For E1 signal input

To_FAN

DB26 (female) Connects to the fan panel through cables TRAN

TO_TOP1

MD64 (female) Connects to the cabinet top subrack through cables

POWER

3V3

To_FAN

For power input of the common unit

TO_TOP1

POWER


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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)


D

D

D

M

E

E

S

L

L

L

A

C

C

C

C

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CKB1

D

DCF

CKB2

 DSAC(Signal Access Card for DTRU BTS)

Function of DMLC 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

SWIN

 Six-route Boolean value output  Four-route analog input SWOUT

 Smoke/water/access

control/infrared/humidity/temperature sensor signal input AIN


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

DELC

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


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TR

Function of DSAC  The DSAC is placed in slot 3 of the cabinet top

 Six-route Boolean value input.  Two-route CBUS3 output  Two-route input of lightning protection arrester failure

alarm

SYNC

EAC

 Access protection of BITS clock input

COM1

S1+S1-S2+S2-

subrack. There is only one DSAC and it is mandatory

COM 2

DSAC


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Double transceiver subsystem  DTRU （ Double Transceiver Unit ）  DTRB DTRU DTRU DTRU

DTRB

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 RF frequency hopping. Filters, amplifies, and outputs the combined signals  RF subsystem receive part.Devides and demodulates the RF signals on

the two TRXs. Support 4-way receive diversity.  Baseband processing part.Processes signals. Supports coding and

decoding, modulation and demodulation.Supports data services in Phase II, GPRS services, and EDGE services.Supports transmit diversity and 4way 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)

DTRU DPAU

DTMU

DAFU DBRU

DTPS -


48V DC

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Indicators on DTRU Indicator RUN

Color Description Green Indicates the running and power-on of the DTRU

Status On Off

Meaning There is power supply but the board is faulty. There is no power supply or the board is faulty.

DTRU TX1 IN1

Slow flash (0.25 Hz)

The board is starting. TCOM

Slow flash (0.5 Hz) The board is running. IN2

Fast flash (2.5 Hz) The DTMU is sending configuraiton parameters to the DTRU. ACT

Green

Indicates the TRX is working

On

The board is running (the DTMU sends configuration parameters to the DTRU correctly and the cell is starting). All the channels on the two carriers can work normally.

TX2 RST RUN ACT

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

RF_IND

Red

Red

Indicates alarm

On (including high- Critical alarm occurs to the board. frequency flash)

Off RF interface indicators On Off Slow flash (0.5 Hz)


RF_IND RXM1 RXD1 RXM2 RXD2

The board is normal. Standing wave alarm Normal RL alarm

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ALM

PW R

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Indicators on DTRU Interface TX1

Type N (male)

Description

DTRU

TX1 output signals:

TX1

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)

IN2

SMA (female) Connects to TX2 in combiner

TX2

N (male)

IN1 TCOM

Combines and outputs IN1 and IN2 or implements PBT combined output

IN2 TX2

TX2 output signals:

RST

Output to the forepart of the RF when not in combiner

RUN

Output to IN2 in combiner

ACT ALM

RXM1

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

RXD1

SMA (female) Diversity 1 or 2nd 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

RF_IND RXM1

RXD2 PWR

Power supply


RXD1 RXM2

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


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DTRU transmit mode-transmit independence TX1

TX

IN1 TCOM

combiner combiner

IN2

TRX0

TX2

RXM1

TX

RXD1

TRX1

RXM2 RXD2


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DTRU transmit mode-transmit diversity Man made multi way

TX1

TX

IN1 TCOM

combiner combiner

IN2

TRX0

TX2

TX

TRX1


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DTRU transmit mode-PBT Same phase

TX1

TX IN1 TCOM

combiner combiner

IN2

TRX0

TX2

TX

TRX1


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DTRU transmit mode-wideband transmit combination TX1

TX

IN1 TCOM

combiner combiner

TRX0

IN2 TX2

TX

TRX1


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DTRU receive mode

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


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DTRU receive mode- Receive independence TX1

TX

IN1 combiner combiner

TCOM

TRX0

IN2 TX2

RXM1 RXD1

divider divider TX divider divider

RXM2

TRX1

RXD2


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DTRU receive mode- Receive diversity TX1

TX

IN1 TCOM

combiner combiner

TRX0

IN2 TX2

RXM1 divider divider

RXD1 divider divider

TX

TRX1

RXM2 RXD2


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DTRU receive mode- 4-way receive diversity TX1

TX

IN1 TCOM

combiner combiner

TRX0

IN2 TX2

RXM1 divider divider

RXD1

TX divider divider

RXM2

TRX1

RXD2


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Functions of DTRB  The DTRB is placed in the DTRU DTRU

subrack. It has six slots, each holding one DTRU

DTRU

 The DTRB provides connections

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

DTRU

DTRB

DTRU DTRU DTRU


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Page 45

Front-End of the RF Subsystem  DDPU (Dual Duplexer Unit for DTRU BTS)  DCOM (Combining Unit for DTRU BTS)

D

D

D

D

D

D

C

D

C

D

C

D

O

P

O

P

O

P

M

U

M

U

M

U

0

1

2

3

4

5

NBBI


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Page 46

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 to

the 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


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Functional structure of the DDPU ANTA

duplexer

ANTB

divider

duplexer divider

TXA RXA1 RXA2 RXA3 RXA4 TXB RXB1 RXB2 RXB3 RXB4


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Indicators on DDPU Indicator RUN

ALM

VSWRA

Color

Description

Green Indicates the DDPU is running and powerd on

Red

Red

Status On

There is power supply but the board is faulty.

Off

There is no power supply or the board is faulty.

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 is loading software programs.

On (including highfrequency 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

Indicates a standing wave Slow flash (0.5 Hz) alarm of Channel A On

Standing wave alarm occurs to Channel A

Indicates an alarm

Off VSWRB

Red

Meaning

Indicates a standing wave Slow flash (0.5 Hz) alarm of Channel B On Off


ANTB ANTA DDPU RUN ALM VSWRA VSWRB

COM

POWER

RXA1

Standing wave critical alarm occurs to Channel A

RXA2

No standing wave alarm occurs to Channel A

RXA4

Standing wave alarm occurs to Channel B

RXB1

Standing wave critical alarm occurs to Channel B

RXB2

No standing wave alarm occur to Channel B

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TXA

RXA3

RXB3 RXB4

TXB

Interface on DDPU Interface Type Description COM 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

ANTB ANTA DDPU RUN ALM VSWRA VSWRB

COM

POWER

RXA2

SMA (female) Main 2 output port

RXA3


RXA1 RXA2 TXA

RXA4

RXA3


RXA4 RXB1

RXB1

SMA (female) Diversity 1 output port

RXB2 RXB3

RXB2

RXB4

SMA (female) Diversity 2 output port

RXB3 SMA (female) Diversity 3 output port HUAWEI TECHNOLOGIES CO., LTD. All rights reserved

Page 50

TXB

Functions of DCOM DCOM

 The DCOM is placed in the DAFU subrack

with the DDPU ONSHELL

 The DCOM is optional and there are a

maximum three DCOMs. The DTRU combines two carriers into one channel.

TX-COM

 The DCOM combines the 2-route DTRU

transmission signals and outputs them to the DDPU

TX1

TX2


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Interfaces on DCOM

Interface

Type

Description

ONSHELL DB26 (female) For indentification of the board type of DCOM and on-site status to DCTB. 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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Page 52

Functions of FAN BOX  The FAN BOX forms a loop with the air inlet box to provide forced

ventilation 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

STATE

FAN PWR

COM


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Indicators on FAN BOX

Indicator STATE

Color

Status

Meaning

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 On green)

The board software is being ungraded

Green or red or orange

There is no power supply or the board is faulty

Off


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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 Um

MS

Antenna Feeder

D D P U

D T R U

D T M U

Abis

BSC BTS3012 Cabinet


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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, modulation, 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 and feeders


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UL Signal Flow Um

MS

Antenna Feeder

D A F U

D T R U

D T M U

Abis

BSC BTS3012 Cabinet


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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 the signals to the BSC through the Abis interface


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Signaling Processing Signal Flow

BSC Abis

DTMU

DTRU

DDPU

BTS3012


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Signaling Processing Signal Flow  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

A-bis

Boards in main cabinet

DTMU Clock distribution cable between cabinets

Boards in slave cabinet


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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 the slave cabinets through the clock distribution cable


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Antenna Feeder subsystem Antenna Antenna Feeder Jumpers TMA

Antenna support Jumper Jumper

TMA

Jumper


Feeder

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Page 67

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 number of TRXs in the basic cabinet is not less than that in any extension cabinet


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Page 68

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 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 HUAWEI TECHNOLOGIES CO., LTD.

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Page 69

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 mode ， receive independence mode  Cabinet Top power （ dBm ）：（ 46 or

47.8 ） -1.0


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DTRU configuration


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DDPU- U0


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DDPU- U1


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DDPU-DL


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Typical configurationS2/2/2 （ transmit independence mode ）

DDPU RXA1

 S2/2/2 transmit independence

RXA2

mode ， Each cell is configured one DTRU and one DDPU

RXA4 RXB1 RXB2

TX B

RXB3

 The connection for one cell is showed in

RXB4

the right slide

TX 1

 BSC data configuration should be ： 

TX A

RXA3

IN 1 TCOM

transmit independence mode ， receive diversity mode

IN2 TX 2

RXM 1

 Cabinet Top power （ dBm ）：（ 46 or

RXD 1

47.8 ） -1.0

RXM 2 RXD 2

DTRU


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Page 75

Typical configurationS2/2/2 （ PBT mode ）

DDPU RXA1 RXA2

TX A

RXA3

 S2/2/2 PBT mode ， each cell is

RXA4 RXB1

configured two DTRU and one DDPU  The connection for one cell is

showed in the right slide  BSC data configuration should be

： PBT mode

RXB2

RXB4

TX 1

TX 1

IN 1

IN 1

TCOM

TCOM

IN2

IN2

TX 2

TX 2

receive independence mode  Cabinet Top power （ dBm ）： 49

RXM 1

RXM 1

RXD 1

RXD 1

RXM 2

RXM 2

RXD 2

RXD 2

DTRU


TX B

RXB3

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DTRU

Page 76

Typical configuration S4/4/4 （ wideband transmit combination mode ）

DDPU

 S4/4/4 wideband transmit combination

RXA1 RXA2

mode ， each cell is configured two DTRU and one DDPU

RXA4 RXB1 RXB2

 BSC data configuration should be ：

wideband transmit combination mode ， receive diversity mode  Cabinet Top power （ dBm ）：（ 46

or 47.8 ） -3.3-1.0

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TX B

RXB3 RXB4

TX 1

TX 1

IN 1

IN 1

TCOM

TCOM

IN2

IN2

TX 2

TX 2

RXM 1

RXM 1

RXD 1

RXD 1

RXM 2

RXM 2

RXD 2

RXD 2

DTRU


TX A

RXA3

Page 77

DTRU

Typical configuration S1/1/1 （ transmit diversity+4-way receive diversity ）  S1/1/1 transmit diversity+4-way

DDPU

DDPU

RXA1

RXA1

receive mode ， each cell is configured one DTRU and two DDPU

RXA2

 BSC data configuration should be ：



transmit diversity mode 4-way receive mode

RXA3

RXA4

RXA4

RXB1

RXB1 TX B

RXB3

RXB4

RXB4

IN 1 TCOM

or 47.8 ） -1.0

IN2 TX 2

RXM 1 RXD 1 RXM 2 RXD 2

DTRU


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RXB2

RXB3

TX 1

 Cabinet Top power （ dBm ）：（ 46

RXA2

RXA3

RXB2



TX A

Page 78

TX A

TX B

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.

DDPU

DDPU

DDPU

RXA1

RXA1

RXA1

RXA2

be ： DTRU1 ： transmit independence mode ， receive independence mode ； DTRU2 ： transmit independence mode ， receive diversity mode

RXA2

TX A

RXA3

RXA3

RXA3

RXA4

RXA4

RXA4

RXB1

RXB1

RXB1

RXB2

 BSC data configuration should

RXA2

TX A

RXB2

TX B

RXB2

TX B

RXB3

RXB3

RXB3

RXB4

RXB4

RXB4

TX 1

TX 1

IN 1

IN 1

TCOM

TCOM

IN2

IN2

TX 2

TX 2

RXM 1

RXM 1

RXD 1

RXD 1

RXM 2

RXM 2 RXD 2

DTRU

DTRU

RXD 2


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Page 79

TX A

TX B

Typical configuration S8/8/8  S8/8/8 cell 1 and cell 3

DDPU

Tx-com

are configured 4 DTRU,2 DCOM and 1 DDPU

RXA2 TX1

RXA3

TX A

TX1

RXA4 RXB1 RXB2 TX 2

RXB3

TX B

TX 2

RXB4

 BSC data configuration

should be ： wideband transmit combination mode ， receive diversity mode

Tx-com

RXA1

TX 1 IN 1 TCOM IN2 TX 2

TX 1

TX 1

IN 1

IN 1

TCOM

TCOM

IN2

IN2

TX 2

TX 2


 Cabinet top

power （ dBm ）：（ 46 or 47.8 ） -3.3-3.3-1.0


DTRU

DTRU

DTRU

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Page 80

DTRU

Typical configuration S8/8/8 RF-EX1

RF-EX1

 S8/8/8 cell2 is

configured 4 DTRU,2 DCOM and 2 DDPU, cell 2 need cross the cabinet

RF-EX2

RF-EX2

RF-EX3

RF-EX3

RF-EX4

RF-EX4

DDPU

DDPU

 BSC data configuration

should be ： wideband transmit combination mode ， receive diversity mode  Attention ： only support

frequency hopping

RXA1


DTRU


Tx-com

RXA2 TX A RXA3 RXA4 RXB1 RXB2 TX B RXB3 RXB4

RXA1

TX1

TX 2

TX 1

TX 1

IN 1

IN 1

TCOM

TCOM

IN2

IN2

TX 2

TX 2

DTRU

DTRU

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Tx-com

RXA2 TX A RXA3 RXA4 RXB1 RXB2 TX B RXB3 RXB4

Page 81

TX1

TX 2


DTRU

Combined Cabinet Signal Flow Slave cabinet

Data cable Control cable

Main cabinet

of main

of main

cabinet

cabinet

group

Clock cable

group

Main Control cable

cabinet of

Clock cable

Data cable

cabinet Control cable

slave cabinet

Slave of slave

Clock cable

group

cabinet group

 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 clock cables and control cables  The main and slave cabinets and combined cabinets require the DIP switches HUAWEI TECHNOLOGIES CO., LTD.

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Page 82

Summary

 Functions and features of BTS3012  BTS3012 hardware structure  Antenna and feeder system  Typical configuration


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Page 83

Thank You www.huawei.com

BTS 3012

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