Ome201102 Huawei Bts3012 Hardware Structure Issue

HUAWEI BTS3012 Hardware Structurewww.huawei.com

Copyright 2006 Huawei Technologies Co., Ltd. All rights reserved.

ObjectivesUpon 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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Contents1. Overview 2. System Components 3. Signal Processing 4. Antenna and Feeder System

5. Typical Configuration


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LocationUm Interface MS BTS3012 MS BTS3012 BTS3012 MS BTS3012 OMC BTS: Base Transceiver Station AUC: Authentication Center BSC: Base Station Controller EIR: Equipment Identity Register BSC A Interface MSC/VLR MAP TUP,ISUP PSTN ISDN PSPDN

HLR/AUC/EIR

SMC/VM

MS: Mobile Station HLR: Home Location Register

MSC: Mobile Switching CenterVM: Voice Mailbox

VLR: Visitor Location Register

SMC: Short Message Center

OMC: Operation and Maintenance CenterPage5


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 EDGESupport 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, STM1, microwave, and satellite transmission


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Hardware structureAbis Interface Monitor Protection for signal BITSTBUS/DBUS/CBUS

Um Interface

Extension cabinet

CBUS3

Electric tilt antenna &TMA feed

DATURF signal

TMA TMA DAFU

MS

E1

CBUS2DBUS/ CBUS TBUS

DTRUFH_BUS

DTMUE1 Metro 100 DEMU

CBUS3CBUS2 FH_BUS

DTRU

fiber

RF signal

DAFU

CBUS3 CBUS3 CBUS2 FH_BUS

TMA TMA DAFU

DTRURF signal

NFCB

CBUS3

CBUS3 CBUS3 Electric tilt antenna & TMA feed

DATU

Electric tilt antenna & TMA feed

Common subsystem

Double transceiver subsystem

Forepart of RF Subsystem

Antenna and feeder subsystem


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BTS3012 Cabinet and BoardsAbbreviations DTRU DTMU DCCU DAFU DDPU DCOM DATU DMLC DELC DSAC DCSU DEMU DCTB FAN Box Double Transceiver Unit Transmission & Timing & Management Unit for DTRU BTS Cable Connection Unit for DTRU BTS Antenna Front-end Unit for DTRU BTS Dual Duplexer Unit for DTRU BTS Combining Unit for DTRU BTS Antenna and TMA Control Unit for DTRU BTS Monitor Signal Lightning-Protection Card for DTRU BTS E1 Signal Lightning-Protection Card for DTRU BTS Signal Access Card for DTRU BTS Combined cabinet Signal connection Unit for DTRU BTS Environment Monitoring Unit for DTRU BTS Cabinet Top Backplane for DTRU BTS NodeB Fan Controlling and monitoring BoardPage10

Description


BTS3012 Cabinet and BoardsCabinet Top Access Subsystem (DCTB)D M L C D E L C D E L C D S A C

Power and E MC

Antenna Front-End of the RF Subsystem (DAFU)

D C O M

D D P U

D C O MWiring

D D P U

D C O M

D D P U


D T R U

D T R U

D T R UWiring FAN Air Inlet

D T R U

D T R U

D T R U

Common Subsystem

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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Power and E MC


D C O M

D D P U

D C O MWiring

D D P U

D C O M

D D P U


D T R U

D T R U


D T R U

D T R U

D T R U

Common Subsystem

D T M U

D T M U

D E M U

D C S U

D C C U

D A T U



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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 theactive 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 DTMUDTMU LMT MMI CBUS2 MCU

OML Abis DBUS

BSC

BIU

DTRU

Clock External synchronized clock MCK Subrack number and clock


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Indicators on DTMUIndicato Color Description Status Meaning r RUN Green Indicates Slow flash (0.25 Hz) OML is blocked operation Slow flash (0.5 Hz) Normal Fast flash at BSC data loading uncertain intervals Off Power failure of the board ACT Green Indicates Off Standby whether the On Active board is active or standby PLL Green Indicates the Off Abnormal clock status On Free-run Fast flash (4 Hz) Pull-in Fast flash (1 Hz) Lock LIU1 Green Indicates the Off E1 port 1 is normal when SWT is out transmission E1 port 5 is normal when SWT is on status of E1 On E1 port 1 near end alarm occurs when port 1 and SWT is out port 5 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 onDTMU RUN ACT PLL LIU1 LIU2 LIU3 LIU4 SWT ALM

RST MMI

T2M FCLK T13M


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Indicators on DTMUIndicator Color Description Status LIU2 Green Indicates the Off transmission status of E1 port 2 and port 6 On 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 Fast flash (4 Hz)E1 port 2 remote end alarm occurs when SWT is out E1 port 6 remote end alarm occurs when SWT is on Indicates the Off E1 port 3 is normal when SWT is out transmission status of E1 E1 port 7 is normal when SWT is on port 3 and port 7 On E1 port 3 near end alarm occurs when SWT is out E1 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 E1 port 7 remote end alarm occurs when SWT is on Indicates the Off E1 port 4 is normal when SWT is out transmission status of E1 E1 port 8 is normal when SWT is on port 4 and port 8 On E1 port 4 near end alarm occurs when SWT is out E1 port 8 near end alarm occurs when SWT is on Fast flash (4 Hz)E1 port 4 remote end alarm occurs when SWT is out E1 port 8 remote end alarm occurs when SWT is on Indicates handover status Off LIU1 to LIU4 indicate the transmission status of E1 port 1 to 4. of E1 On LIU1 to LIU4 indicate the transmission status of E1 port 5 to 8. Alarm indicators Off No hardware alarm On Hardware alarmDTMU RUN ACT PLL LIU1 LIU2 LIU3 LIU4 SWT ALM

LIU3

Green

RST MMI

LIU4

Green

T2M FCLK T13M

SWT ALM

Green Red


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Interface on the DTMU panelInterfaceT2M FCLK T13M MMI

TypeSMB (female) SMB (female) SMB (female) RJ45

DescriptionOutputs reference testing clock 216.7 Hz frame clock 13M primary reference clock Near end maintenance network port


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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

Output of 6-route Boolean value and input of 32-route main node alarmsMonitor signal DMLC DEMU CBUS3


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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.DCMB DCCU DTRB DCSU DCTB DTMU

There is only one DCSU and it ismandatoryDEMU

The DCSU transfers signals for the combined cabinet and cabinet group between the common subrack and the cabinet topCopyright 2006 Huawei Technologies Co., Ltd. All rights reserved.

DATU

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The interfaces on the DCSU panelSilkScreen Type DescriptionDCSU

CC_OUT

MD64 (female) For cable output from the combined cabinetCC_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 DCSUGM51DCSU VERB SW6 SW9SW7 SW10 SW8

SW5

SW14 SW13 SW12

SW4 SW3 SW2 SW11 SW1


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Functions of DCCU

The DCCU is placed in slot 6 of the common subrack. There isDTMU

only one DCCU and it isDCMB DCCU

NFCB DCTB DCSU

mandatory

Converting the input and output signals of the common subrack.DEMU

Inputting the power of the common subrack

DATU

Providing EMI filteringPage23


The interfaces on the DCCU panelSilkScreen TRAN To_FAN TO_TO P1DCCU

Type

Description For E1 signal inputTRAN

MD64 (female)DB26 (female) MD64 (female)

Connects to the fan panel through cables Connects to the cabinet top subrack through cables For power input of the common unitTo_FAN

POWER 3V3

TO_TOP1

POWER


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Functions of DATUDATU

The DATU is placed in slots 2 to 4 and slot 7 of the common subrack with the DEMU. It is optional and there are maximum two DATUs

RUN ACT ALM

Transmitting the remote electrical tilt unit (RET) control signals

ANT0 ANT1 ANT2

Feeding the TMA Communicating with the DTMU through

ANT3

ANT4 ANT5

CBUS3 for control and alarm report


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BTS3012 Cabinet and BoardsCabinet Top Access Subsystem (DCTB)D M L C D E L C D E L CD S A C

Power and E MC


D C O M

D D P U

D C O MWiring

D D P U

D C O M

D D P U


D T R U

D T R U


D T R U

D T R U

D T R U

Common Subsystem

D T M U

D T M U

D E M U

D C S U

D C C U

D A T U



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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)CKB2

D M L C

D E L C

D E L C

D S A CKB1 C


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DCF

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

DMLC

SWIN

Thirty-two-route Boolean value input Six-route Boolean value outputSWOUT

Four-route analog input Smoke/water/access

control/infrared/humidity/temperature sensorsignal inputCopyright 2006 Huawei Technologies Co., Ltd. All rights reserved. Page28

AIN

Function of DELC

The DELC is placed in slots 0 to 2 of theDELC

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

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

DSAC

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

Access protection of BITS clock input


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SYNC

EAC

COM1

S1+S1-S2+S2-

COM 2


Power and E MC


D C O M

D D P U

D C O MWiring

D D P U

D C O M

D D P U


D T R U

D T R U


D T R U

D T R U

D T R U

Common Subsystem

D T M U

D T M U

D E M U

D C S U

D C C U

D A T U



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DTRUDouble Transceiver Unit DTRBDTRU DTRU DTRU DTRU DTRU DTRU

DTRB


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Functions of DTRU

RF subsystem transmit part. Converts the basband signals on the twoTRXs 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 anddemodulation.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)DTRU DPAU

DTMU DBRU

DAFU

DTPS 48V DC


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Indicators on DTRUDTRUIndicator RUN Color Description On Off Slow flash (0.25 Hz) Slow flash (0.5 Hz) Status Meaning There is power supply or the board is faulty. There is no power supply and the board is faulty. The board is starting. The board is running. Green Indicates the running and power-on of the DTRU

TX1 IN1 TCOM IN2 TX2 RST RUN ACT ALM RF_IND RXM1

Fast flash (2.5 Hz)ACT Green Indicates the TRX is working On

The DTMU is sending configuraiton parameters to the DTRU.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. Communication between DTRU and DTMU is not set up Only parts of the logic channels are working normally (including after TRX mutual aid). Critical alarm occurs to the board. The board is normal. Standing wave alarm Normal RL alarm

Off Slow flash (0.5Hz) ALM Red Indicates alarm On (including highfrequency flash) Off RF_IND Red RF interface indicators On Off Slow flash (0.5 Hz)

RXD1 RXM2 RXD2 PWR


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Connectors on DTRUInterfaceTX1

TypeN (male) TX1 output signals:

DescriptionTX1 IN1 TCOM IN2 TX2

DTRU

Output to the forepart of the RF when not in combiner Output to IN1 in combiner IN1 TCOM SMA (female) Connects to TX1 in combiner N (male) Combines and outputs IN1 and IN2 or implements PBT combined output IN2 TX2 SMA (female) Connects to TX2 in combiner 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 1RST RUN ACT ALM RF_IND RXM1 RXD1 RXM2 RXD2 PWR

RXD1RXM2 RXD2

SMA (female) Diversity 1 or 2 receive port of carrier 1SMA (female) Main receive port of carrier 2 or Diversity 3 receive port of carrier 1 SMA (female) Diversity receive port of carrier 2 or Diversity 4 receive port of carrier 1

PWR

3V3

Power supply Page36


DTRU transmit mode

No combining Diversity transmitter Power booster technology Wide band combining


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No combiningTX1

TXIN1 TCOM IN2 TX2combiner

TRX0

RXM1 RXD1

TX

RXM2 RXD2

TRX1


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Diversity transmitterTX1 IN1

Man made multi wayTX

TCOMIN2 TX2

combiner

TRX0

TX

TRX1


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Power booster technologyTX1 IN1 TCOM IN2

Same phaseTXcombiner

TRX0

TX2

TX

TRX1


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Wide band combiningTX1 IN1 TCOM IN2 TX2combiner

TX

TRX0

TX

TRX1


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DTRU receive mode

Independent receiver Dividing receiver Four diversity receiver


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Independent receiverTX1TX

IN1 TCOM IN2 TX2combiner

TRX0

RXM1divider

RXD1

TX divider

RXM2 RXD2

TRX1


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Dividing receiverTX1 IN1 TCOM IN2 TX2combiner TX

TRX0

RXM1divider

RXD1divider

TX

RXM2 RXD2

TRX1


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Four diversity receiverTX1TX


TRX0

RXM1divider

RXD1divider

TX

RXM2 RXD2

TRX1


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Intra structure of DTRUTX1TX


TRX0

RXM1 RXD1

divider TX divider

RXM2 RXD2

TRX1


Page46

Functions of DTRB

The DTRB is placed in the DTRU subrack. It has six slots, each holding one DTRUDTRU DTRU DTRU DTRU DTRU DTRU

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

DTRB


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Power and E MC


D C O M

D D P U

D C O MWiring

D D P U

D C O M

D D P U


D T R U

D T R U


D T R U

D T R U

D T R U

Common Subsystem

D T M U

D T M U

D E M U

D C S U

D C C U

D A T U



Page48

Front-End of the RF Subsystem

DDPU (Dual Duplexer Unit for DTRU BTS) DCOM (Combining Unit for DTRU BTS)

D CNBBI

D D P U

D C O M

D D P U

D C O M

D D P U

O M

0

1

2

3

4

5


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Functions of DDPU

The DDPU is intermixed with the DCOM in the DAFU subrackof 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

Receiving the gain control of the low noise amplifierPage50


Functional structure of the DDPUANTAANTB duplexer divider duplexer divider

TXA RXA1 RXA2 RXA3 RXA4 TXB RXB1 RXB2 RXB3 RXB4


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Indicators on DDPUIndicator RUN Color Green Description Indicates the DDPU is running and powerd on On Off Slow flash (0.5 Hz) Fast flash (2.5 Hz) Status MeaningANTB

There is power supply and the board is faulty. There is no power supply or the board is faulty. The board is running normally. The DTMU is sending configuration parameters to the DDPU or the DDPU is loading software programs. There is alarm(including standing wave alarm) and the board is faulty. No fault The board is starting or loading the newest application programs

ANTA DDPU RUN ALM VSWRA VSWRB

ALM

Red

Indicates an alarm

On (including highfrequency flash) Off Slow flash (0.5 Hz)

COM

POWER

RXA1

VSWRA

Red

Indicates a standing wave alarm of Channel A Indicates a standing wave alarm of Channel B

Slow flash (0.5 Hz) On Off Slow flash (0.5 Hz) On Off

Standing wave alarm occurs to Channel A Standing wave critical alarm occurs to Channel A No standing wave alarm occurs to Channel A Standing wave alarm occurs to Channel B Standing wave critical alarm occurs to Channel B No standing wave alarm occur to Channel B

RXA2 RXA3 RXA4 RXB1 RXB2 RXB3 RXB4

TXA

VSWRB

Red

TXB


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Interface on DDPUInterface Type COM DB26 (female) POWER 3V3 TXA N (male) TXB RXA1 RXA2 RXA3 RXA4 RXB1 RXB2 RXB3 RXB4 ANTA ANTB N (male) SMA (female) SMA (female) SMA (female) SMA (female) SMA (female) SMA (female) SMA (female) SMA (female) DIN (female) DIN (female) Description Sends to the DDPU control signals, communication signals, clock signals and subrack number Power supply input Input of the TX signals sent from the DTRU Input of the DCOM combining signals Input of the TX signals sent from the DTRU Input of the DCOM combining signals Main 1 output port Main 2 output port Main 3 output port Main 4 output port Diversity 1 output port Diversity 2 output port Diversity 3 output port Diversity 4 output port RF jumper port RF jumper portANTA

ANTB

DDPU RUN ALM VSWRA VSWRB

COM

POWER

RXA1 RXA2 RXA3 RXA4 RXB1 RXB2 RXB3 RXB4 TXB TXA


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Functions of DCOM

The DCOM is placed in the DAFU subrack with the DDPU

DCOM

ONSHELL

The DCOM is optional and there are a maximum three DCOMs. The DTRUTX-COM

combines two carriers into one channel. The DCOM is required when the DTRUs are insufficentTX1

The DCOM combines the 2-route DTRU transmission signals and outputs them to the DDPU

TX2


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Interfaces on DCOMInterface Type Description

ONSHE LL TX

DB26 (female)

For indentification of the board type of DCOM and on-site status

N (male) Output of combining signals from the DCOM

COM TX1TX2

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


Page55

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 bythe Fan Controlling and Monitoring BoardSTATE FAN PWR COM


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Indicators on FAN BOXIndicatorSTATE

ColorGreen

Status

Meaning

Fast flash (4 Hz) Communication between the NFCB and the DTMU is abnormal. There is no alarm

RedGreen

Fast flash (4 Hz) Alarm occurs to the boardSlow flash (0.5 Hz) The board is running normally

Orange (red and green) Green or red or orange

On

The board software is being ungraded

Off

There is no power supply and the board is faulty


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Page58

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


Page59

DL Signal FlowUm

MS

Antenna Feeder

D D P U

D T R U

D T M U

Abis

BSC

BTS3012 Cabinet


Page60

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 and feeders


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UL Signal FlowUm

MS

Antenna Feeder

D A F U

D T R U

D T M U

Abis

BSC

BTS3012 Cabinet


Page62

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 DDPUthrough 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 transmitsthe signals to the BSC through the Abis interface


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Signaling Processing Signal Flow

BSCAbis DTMU

DTRU

DDPU

BTS3012


Page64

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


Page65

Clock Signal Flow

A-bis DTMUClock distribution cable between cabinets

Boards in main cabinet

Boards in slave cabinet


Page66

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 slavecabinets through the clock distribution cable


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Page68

Antenna Feeder subsystemAntenna

Antenna Feeder Jumpers TMA

Antenna support Jumper TMA Jumper

Jumper

Feeder


Page69

Antenna

In mobile communications systems, the antenna consists ofan array of element antennas, as shown in FigureElement antenna Feeding network Element antenna Feeding network

Feeding network

Antenna connector Directional antenna

Antenna connector Omnidirectional antenna


Page70

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 antenna

Single polarization antenna

Dual polarization antenna


Page71

Lightning Arresterfeeder

Lightning Arrester is used to prevent the equipment from being damaged by the lightening current inducted by the core line of the feeder jumper

Lightning Arrester


Page72

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


Page73

Antenna Pattern

The antenna pattern describes the radiating abilities of antennas in all directions

360 Omni Antenna

120

90

65

Directional antenna


Page74

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


Page75




Page76

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


Page77

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


Page78

Typical configuration S1/1/1 Diversity transmitterDDPURXA1

DDPURXA1 TX A RXA2 RXA3 RXA4 RXB1 RXB2 TX B TX B RXB3 RXB4 TX A

S1/1/1 Diversity transmitter / Four diversity receiver modeeach cell is configured one DTRU and two DDPU BSC data configuration should be

RXA2 RXA3 RXA4 RXB1 RXB2 RXB3 RXB4

Diversity transmitter mode

TX 1 IN 1

Four diversity receiver mode

TCOM IN2 TX 2

Cabinet Top powerdBm

46 or 47.8-1.0

RXM 1 RXD 1 RXM 2 RXD 2

DTRU


Page79

Typical configurationS2/2/2 No combining modeDDPU

S2/2/2 transmit independence modeeach cell is configured one DTRU and one DDPU

RXA1 RXA2 RXA3 RXA4 TX A

The connection for one cell is showed in the rightslide

RXB1 RXB2 TX B RXB3 RXB4

BSC data configuration should be

TX 1 IN 1

No combining mode Dividing receiver mode

TCOM IN2 TX 2


RXM 1 RXD 1

46 or 47.8-1.0DTRU

RXM 2 RXD 2


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Typical configurationS2/2/2 Power booster technology

DDPURXA1

S2/2/2 PBT modeeach cell isconfigured two DTRU and one DDPU

RXA2 RXA3 RXA4 RXB1 RXB2

TX A

The connection for one cell is showed in the right slideTX 1

TX B RXB3 RXB4

TX 1 IN 1


IN 1 TCOM

Power booster technology mode Independent receiver mode

TCOM IN2 TX 2 IN2 TX 2

RXM 1

RXM 1 RXD 1 RXM 2 RXD 2


RXD 1 RXM 2

49 - 1.0DTRU

RXD 2

DTRU


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Typical configuration S4/4/4 Wide band combining

DDPURXA1

S4/4/4 Wide band combining mode each cell is configured two DTRU and one DDPU

RXA2 RXA3 RXA4 RXB1 RXB2

TX A

TX B RXB3 RXB4

BSC data configuration should beTX 1 TX 1 IN 1 TCOM IN2 TX 2

Wide band combining modeDividing receiver mode

IN 1 TCOM

IN2 TX 2

Cabinet Top powerdBmRXM 1 RXM 1 RXD 1 RXM 2 RXD 2

46 or 47.8-3.3-1.0DTRU

RXD 1 RXM 2 RXD 2

DTRU


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Typical Configuration S1/2/1cell1

cell3

cell2

S1/2/1,cell1 and cell 3 share one DTRU, cell 2 need one DTRU and one DDPU

DDPURXA1 RXA2 RXA3 RXA4 RXB1 RXB2 TX B RXB3 RXB4 TX A




No combining mode Independent receiver mode No combining mode Dividing receiver mode

DTRU1

TX 1 IN 1 TCOM IN2

TX 1 IN 1 TCOM IN2 TX 2

DTRU2


TX 2

46 or 47.8-1.0RXM 1 RXD 1 RXM 2 RXD 2 RXM 1 RXD 1 RXM 2 RXD 2

DTRU

DTRU


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Typical configuration S8/8/8

S8/8/8 cell 1 and cell 3 are configured 4 DTRU,2 DCOMDDPU

Tx-comTX1

RXA1 RXA2 RXA3 RXA4 TX A

Tx-comTX1

and 1 DDPU

BSC data configuration should beTX 2

RXB1 RXB2 RXB3 RXB4 TX B TX 2

DCOM

DCOM

Wide band combining

TX 1 TX 1 IN 1 IN 1 TCOM TCOM IN2 IN2 TX 2 TX 2

TX 1 TX 1 IN 1 IN 1 TCOM TCOM IN2 IN2 TX 2 TX 2

mode

Dividing receiver mode

Cabinet top powerdBm

46 or 47.8-3.3-3.3-1.0DTRU DTRU DTRU

DTRU


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Typical configuration S8/8/8RF-EX1 RF-EX1 RF-EX2 RF-EX3 RF-EX4

S8/8/8 cell2 is configured 4 DTRU,2 DCOM and 2 DDPU, cell 2 need cross the cabinet BSC data configuration should be

RF-EX2 RF-EX3 RF-EX4

DDPURXA1 RXA2 TX A RXA3 RXA4 RXB1 RXB2 TX B RXB3 RXB4

DDPU

Tx-comTX1

RXA1 RXA2 TX A RXA3 RXA4 RXB1 RXB2 TX B RXB3 RXB4

Tx-comTX1

Wide band combining mode Dividing receiver mode

TX 2

TX 2

DCOM

DCOM





Cabinet top powerdBm

46 or 47.8-3.3-3.31.0

Attentiononly support RF hopping

DTRU

DTRU

DTRU

DTRU


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Combined Cabinet Signal CablesSlave Data cable Control cable Clock cable

Maincabinet

Main Control cable Clock cable cabinet of slave cabinet group

Data cable Control cable Clock cable

Slave cabinet of slave cabinet group

cabinetof main cabinet group

of maincabinet 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


Page86

Summary

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


Page87

Thank youwww.huawei.com

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 Thank you of triplex antenna. The triplex TMA consists www.huawei.com filter, low noise amplification, and feeder Sending TMAfilter BTS

Feeder

Bypass Lower noise amplific -ation DC

Receiving filter

Receiving filter

Documents

Ome201102 Huawei Bts3012 Hardware Structure Issue