Ome201102 Huawei Bts3012 Hardware Structure Issue1.6

7/30/2019 Ome201102 Huawei Bts3012 Hardware Structure Issue1.6

1/89

www.huawei.com

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

HUAWEI BTS3012

Hardware Structure


2/89

Copyright 2006 Huawei Technologies Co., Ltd. All rights reserved. Page2

Objectives

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


3/89


4/89


Contents

1. Overview

2. System Components

3. Signal Processing

4. Antenna and Feeder System

5. Typical Configuration


5/89


Location

MS: Mobile Station BTS: Base Transceiver

Station

BSC: Base Station

ControllerHLR: Home LocationRegister

AUC: Authentication Center EIR: Equipment IdentityRegister

MSC: Mobile SwitchingCenter

VLR: Visitor LocationRegister

SMC: Short MessageCenter

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,ISUP

MS

MS

MS


6/89


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


7/89


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


8/89


Contents

1. Overview






9/89


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

Common subsystem

NFCB

Metro 100

DTMU

DEMU

E1

BITSMonitor

TBUS/DBUS/CBUS

MS

FH_BUS

Extension

cabinet

DBUS/TBUS

CBUS

CBUS3

CBUS3

CBUS3

CBUS3

CBUS2

CBUS2

CBUS2

CBUS3

CBUS3

Pro

tectionforsignal

Electric tilt antenna & TMA feed

Electric tilt antenna & TMA feed

Electric tilt antenna &TMA feedCBUS3

FH_BUS

FH_BUS

RF signal

RF signal

RF signal


10/89


BTS3012 Cabinet and BoardsAbbreviations Description

DTRU Double Transceiver Unit

DTMU Transmission & Timing & Management Unit for DTRU BTS

DCCU Cable Connection Unit for DTRU BTS

DAFU Antenna Front-end Unit for DTRU BTS

DDPU Dual Duplexer Unit for DTRU BTS

DCOM Combining Unit for DTRU BTS

DATU Antenna and TMA Control Unit for DTRU BTS

DMLC Monitor Signal Lightning-Protection Card for DTRU BTS

DELC E1 Signal Lightning-Protection Card for DTRU BTS

DSAC Signal Access Card for DTRU BTS

DCSU Combined cabinet Signal connection Unit for DTRU BTS

DEMU Environment Monitoring Unit for DTRU BTS

DCTB Cabinet Top Backplane for DTRU BTS

FAN Box NodeB Fan Controlling and monitoring Board


11/89


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

Double

transceiver

subsystem

Common

Subsystem

AntennaFront-Endof the RF Subsystem

(DAFU)

Cabinet Top Access

Subsystem (DCTB)


12/89



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

ELC

SAC

Transmission Unit

DTM

U

DTM

U

DEM

U

D

C

CU

D

C

SU

D

A

TU

Double

transceiver

subsystem

Common

Subsystem


(DAFU)

Cabinet Top Access

Subsystem (DCTB)


13/89


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


14/89


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


15/89


16/89


Indicators on DTMU

RUN

ACT

PLL

LIU1

LIU2

LIU3

LIU4

SWT

ALM

RST

MMI

T2M

FCLK

T13M

DTMU

Indicato

r

Color Description Status Meaning

RUN Green Indicatesoperation

Slow flash (0.25 Hz) OML is blocked

Slow flash (0.5 Hz) Normal

Fast flash atuncertain intervals

BSC data loading

Off Power failure of the board

ACT Green Indicateswhether theboard is

active orstandby

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 thetransmission

status of E1port 1 andport 5

Off E1 port 1 is normal when SWT is outE1 port 5 is normal when SWT is on

On E1 port 1 near end alarm occurs whenSWT is outE1 port 5 near end alarm occurs whenSWT is on

Fast flash (4 Hz) E1 port 1 remote end alarm occurswhen SWT is outE1 port 5 remote end alarm occurswhen SWT is on


17/89


18/89


Interface on the DTMU panel

Interface Type Description

T2M SMB (female) Outputs reference testing clock

FCLK SMB (female) 216.7 Hz frame clock

T13M SMB (female) 13M primary reference clock

MMI RJ45 Near end maintenance network port


19/89


20/89


Functions of DCSU

The Combined Cabinet SignalConnection 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

The DCSU transfers signals for the

combined cabinet and cabinet

group between the common

subrack and the cabinet top

DCMB

DTMU

DCSUDTRB

DCTB

DCCU

DEMU

DATU


21/89


22/89


GM51DCSU VERBSW6

SW9

SW14

SW13

SW12

SW7

SW10

SW8

SW5

SW4

SW3

SW11

SW2

SW1

Switch of DCSU


23/89


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 thecommon subrack

Providing EMI filtering

DCMB

DTMU

DCCU

NFCB

DCTB

DCSU

DEMU

DATU


24/89


The interfaces on the DCCU panel

POWER

DCCU

To_FAN

TO_TOP1

TRAN

Silk-

ScreenType Description

TRANMD64

(female)For E1 signal input

To_FAN DB26(female)

Connects to the fan panel throughcables

TO_TO

P1

MD64

(female)

Connects to the cabinet top

subrack through cables

POWER 3V3For power input of the common

unit


25/89


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 throughCBUS3 for control and alarm report

DATU

RUN

ACT

ALM

ANT0

ANT1

ANT2

ANT3

ANT4

ANT5


26/89



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

MLC

Power andE MC

Transmission Unit

DDPU

ELC

ELC

SAC

Transmission Unit

DTM

U

DTM

U

DEM

U

D

C

CU

D

C

SU

D

A

TU

Double

transceiver

subsystem

Common

Subsystem


(DAFU)

Cabinet Top Access

Subsystem (DCTB)


27/89


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

ML

C

D

EL

C

D

EL

C

D

SA

C

D

CF

CKB2

CKB1


28/89


29/89


30/89


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-


31/89


32/89


Double transceiver subsystem

DTRUDouble Transceiver Unit

DTRB

DTRB

DTRU

DTRU

DTRU

DTRU

DTRU

DTRU


33/89


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 the

two 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


34/89


35/89


36/89


37/89


DTRU transmit mode

No combining

Diversity transmitter

Power booster technology

Wide band combining


38/89


39/89


40/89


41/89


42/89


DTRU receive mode

Independent receiver

Dividing receiver

Four diversity receiver


43/89


Independent receiver

TRX1

TRX0

TX

TX

TX1

IN1

TCOM

IN2

TX2

RXM1

RXD1

RXM2

RXD2

divider

combiner

divider


44/89


Dividing receiver

TRX0

TX

TRX1

TX

TX1

IN1

TCOM

IN2

TX2

RXM1

RXD1

RXM2

RXD2

combiner

divider

divider


45/89


Four diversity receiver

TRX0

TX

TRX1

TX

divider

divider

TX1

IN1

TCOM

IN2

TX2

RXM1

RXD1

RXM2

RXD2

combiner


46/89


47/89


48/89



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

MLC

Power andE MC

Transmission Unit

DDPU

ELC

ELC

SAC

Transmission Unit

DTM

U

DTM

U

DEM

U

DC

CU

DC

SU

DA

TU

Double

transceiver

subsystem

Common

Subsystem


(DAFU)

Cabinet Top Access

Subsystem (DCTB)


49/89


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


50/89


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

Receiving the gain control of the low noise amplifier


51/89


52/89


53/89


54/89


55/89


Interfaces on DCOM

Interface Type Description

ONSHE

LL

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


56/89


57/89


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


58/89


59/89


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


60/89


DL Signal Flow

D

D

P

U

Um

BSC

BTS3012 Cabinet

MSAntennaFeeder

Abis

D

T

R

U

DT

M

U


61/89


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

UL Signal Flow


62/89


UL Signal Flow

D

A

F

U

Um

BSC

BTS3012 Cabinet

MSAntennaFeeder

Abis

D

T

R

U

DT

M

U


63/89


64/89


Signaling Processing Signal Flow

BTS3012

DDPUDTRUDTMU

BSCAbis


65/89


66/89


67/89


68/89


69/89


70/89


71/89


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


72/89


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


73/89


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


74/89


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

Lower

noiseamplific-ation

Sending

filter

Receivingfilter

Bypass

DC

BTS

TMA

Feeder

Receivingfilter


75/89


76/89


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


77/89


Contents

1. Overview





C f


78/89


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 ruleTRXs 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


79/89

Typical configuration S1/1/1


80/89


Typical configuration S1/1/1

Diversity transmitter

S1/1/1 Diversity transmitter / Four

diversity receiver modeeach cell is

configured one DTRU and two DDPU

BSC data configuration should be

Diversity transmittermode

Four diversity receiver 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


81/89


82/89


83/89


84/89


85/89


86/89


87/89

S


88/89


Summary

Functions and features of BTS3012

BTS3012 hardware structure

Antenna and feeder system

Typical configuration


89/89

Thank youwww.huawei.com

Documents

Ome201102 Huawei Bts3012 Hardware Structure Issue1.6