Huawei bts3012 hardware structure issue1.0

HUAWEITECHNOLOGIES CO., LTD. All rights reserved
www.huawei.com
Internal
OME201102 HUAWEI BTS3012
Hardware Structure
ISSUE 1.0

HUAWEITECHNOLOGIES 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

References
 BTS3012 Technical Manual
 BTS3012 Installation Manual
 BTS3012 User Manual

Chapter 1 OverviewChapter 1 Overview
Chapter 2 System ComponentsChapter 2 System Components
Chapter 3 Signal ProcessingChapter 3 Signal Processing
Chapter 4 Antenna and Feeder SystemChapter 4 Antenna and Feeder System
Chapter 5 Typical configurationChapter 5 Typical configuration

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
M
AP
TUP,ISUPMS
MS
MS

Features and Functions
 Hổ trợ băng tần GSM800M 、 850M 、 900M 、 1800M 、 1900M
 Support networking topology includes star, tree, chain and ring
 Support A5/1 and A5/2 encryption/decryption
 Support GPRS and EDGE
 Support dynamic and static power control
 Support the omni-directional coverage and directional coverage

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

Hardware structure
TMA TMA
DTRU DAFU
Antenna and feeder
subsystem
Forepart 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
BITS
Monitor
TBUS/DBUS/CBUS
MS
FH_BUS
Extension
cabinet

BTS3012 Cabinet and Boards
D D D D
Wiring & Air Inlet
Wiring
D
D
P
U
D
C
O
M
D
C
O
M
D
D
P
U
D
C
O
M
D
T
R
U
D
T
R
U
D
T
R
U
D
T
R
U
D
T
R
U
D
T
R
U
Wiring
FAN
Air Inlet
M
L
C
Power and
EMC
Transmission Unit
D
D
P
U
E
L
C
E
L
C
S
A
C
Transmission Unit
D
T
M
U
D
T
M
U
D
E
M
U
D
C
C
U
D
C
S
U
D
A
T
U

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

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

Functions of DTMU
 Providing the external GPS input, 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, and security management
 Supporting 8-route digital alarm input. Two routes are lightning
arrester failure alarm detection

Structure of DTMU
MCK
OML
DBUS
CBUS2
Clock
BIU
DTRU
DTMU
BSC
MCU
MMI
LMT
Abis
External
synchronized clock
Subrack number
and clock

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 the
clock status
Off Abnormal
On Free-run
Fast flash (4 Hz) Pull-in
Fast flash (1 Hz) Lock
LIU1 Green Indicates the
transmission
status 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 on
On 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

transmission status of
E1 port 2 and port 6
Fast flash (4
Hz)
E1 port 2 remote end alarm occurs when SWT is out
Fast flash (4
Hz)
Fast flash (4
Hz)
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

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

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

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
 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

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

GM51DCSU VERB
SW6
SW9
SW14
SW13
SW12
SW7
SW10
SW8
SW5
SW4
SW3
SW11
SW2
SW1
Switch of DCSU

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

The interfaces on the DCCU panel
POWER
DCCU
To_FAN
TO_TOP1
TRAN
Silk-
Screen
Type Description
TRAN
MD64
(female)
For E1 signal input
To_FAN
DB26
(female)
Connects to the fan panel through cables
TO_TOP1
MD64
(female)
Connects to the cabinet top subrack
through cables
POWER 3V3 For power input of the common unit

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

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

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

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

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
COM1EACSYNCCOM2S1+S1-S2+S2-

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

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

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

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 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.
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 (including
high-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

Indicators on DTRU
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
output
IN2 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

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

DTRU transmit mode-transmit independence
TCOM
TRX0TRX0
TX
TRX1TRX1
TX
TX1
IN1
IN2
TX2
RXM1
RXD1
RXM2
RXD2
combinercombiner

DTRU transmit mode-transmit diversity
TRX1TRX1
TRX0TRX0
TX
TX
TX1
IN1
TCOM
IN2
TX2
Man made multi way
combinercombiner

DTRU transmit mode-PBT
TRX1TRX1
TRX0TRX0
TX
TX
TX1
IN1
TCOM
IN2
TX2
Same phase
combinercombiner

DTRU transmit mode-wideband transmit combination
TRX0TRX0
TX
TRX1TRX1
TX
TX1
IN1
TCOM
IN2
TX2
combinercombiner

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

DTRU receive mode- Receive independence
TRX1TRX1
TRX0TRX0
TX
TX
TX1
IN1
TCOM
IN2
TX2
RXM1
RXD1
RXM2
RXD2
dividerdivider
combinercombiner
dividerdivider

DTRU receive mode- Receive diversity
TRX0TRX0
TX
TRX1TRX1
TX
TX1
IN1
TCOM
IN2
TX2
RXM1
RXD1
RXM2
RXD2
combinercombiner
dividerdivider
dividerdivider

DTRU receive mode- 4-way receive diversity
TRX0TRX0
TX
TRX1TRX1
TX
dividerdivider
dividerdivider
TX1
IN1
TCOM
IN2
TX2
RXM1
RXD1
RXM2
RXD2
combinercombiner

Intra structure of DTRU
TRX0TRX0
TX
TRX1TRX1
TX
TX1
IN1
TCOM
IN2
TX2
RXM1
RXD1
RXM2
RXD2
combinercombiner
dividerdivider
dividerdivider

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

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

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

Functional structure of the DDPU
ANTB
TXA
TXB
RXA4
duplexerduplexer dividerdivider duplexerduplexer dividerdivider
ANTA
RXA1
RXA2
RXA3
RXB1
RXB2
RXB3
RXB4

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 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.
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 Channel
A
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
RXA3
RXA4
RXB1
RXB2
RXB3
RXB4
DDPU
TXA
TXB
COM
POWER
VSWRB
ANTA
ANTB

Interface on DDPU
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
RXA2 SMA
(female)
Main 2 output port
RXA3 SMA
(female)
Main 3 output port
RXA4 SMA
(female)
Main 4 output port
RXB1 SMA
(female)
Diversity 1 output port
RXB2 SMA
(female)
RXB3 SMA
(female)
RUN
ALM
VSWRA
RXA1
RXA2
RXA3
RXA4
RXB1
RXB2
RXB3
RXB4
DDPU
TXA
TXB
COM
POWER
VSWRB
ANTA
ANTB

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. The
DCOM 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

Interfaces on DCOM
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

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
FANSTATE
COM
PWR

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

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

DL Signal Flow
D
D
P
U
Um
BSC
BTS3012 Cabinet
MS
Antenna
Feeder
Abis
D
T
R
U
D
T
M
U

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
D
A
F
U
Um
BSC
BTS3012 Cabinet
MS
Antenna
Feeder
Abis
D
T
R
U
D
T
M
U

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

Signaling Processing Signal Flow
BTS3012
DDPUDTRUDTMU
BSC
Abis

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

Clock Signal Flow
DTMU
Boards in main
cabinet
Boards in slave
cabinet
A-bis
Clock distribution
cable between
cabinets

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

Antenna Feeder subsystem
Antenna
TMA
Antenna
support
Jumper
Jumper
Feeder
Jumper
Antenna
Feeder
Jumpers
TMA

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

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

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

Types of Main Feeder
 7/8 inch
 Cable loss=0.043dB/m
 5/4 inch
 1/2 inch jumper
 Used between the antenna and the main feeder
 Between the antenna and the tower-top amplifier
 Between the cabinet and the lightning arrester

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
noise
amplific
-ation
Sending
filter
Receiving
filter
Bypass
DC
BTS
TMA
Feeder
Receiving
filter

Antenna Pattern
 The antenna pattern describes the radiating abilities of
antennas in all directions
360¡ ã
Omni Antenna Directional antenna
120¡ ã 90¡ ã 65¡ ã

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

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

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

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
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

（ transmit diversity+4-way receive
diversity ）
 S1/1/1 transmit diversity+4-way
receive mode ， each cell is
configured one DTRU and two
DDPU
 BSC data configuration should be
：
 transmit diversity mode
 4-way receive mode
 Cabinet Top power （ dBm ）：
（ 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

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

Typical configurationS2/2/2
（ PBT mode ）
 S2/2/2 PBT mode ， each cell is
configured two DTRU and one
DDPU
 The connection for one cell is
showed in the right slide
 BSC data configuration should be
： PBT mode
receive independence mode
 Cabinet Top power （ dBm ）： 49
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

（ wideband transmit combination mode ）
 S4/4/4 wideband transmit combination
mode ， each cell is configured two
DTRU and one DDPU
wideband transmit combination
mode ， receive diversity mode
 Cabinet Top power （ dBm ）：（ 46
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

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 configuration
should be ：
DTRU1 ： transmit
independence
mode ， receive
independence mode ；
DTRU2 ： transmit
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

 S8/8/8 cell 1 and cell 3
are configured 4
DTRU,2 DCOM and 1
DDPU
should be ： wideband
transmit combination
mode ， receive
diversity mode
 Cabinet top
power （ dBm ）：（ 46
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

 S8/8/8 cell2 is
configured 4 DTRU,2
DCOM and 2 DDPU, cell
2 need cross the cabinet
should be ： wideband
transmit combination
mode ， receive
diversity mode
 Attention ： only support
frequency 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

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 clock
cables 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
Main
cabinet
of
slave
cabinet
group
Slave
cabinet
of
slave
cabinet
group
Data cable
Clock cable
Control cable
Clock cable
Control cable
Data cable
Clock cable
Control cable

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

Huawei bts3012 hardware structure issue1.0

Recomendados

Recomendados

Más contenido relacionado

La actualidad más candente

La actualidad más candente (20)

Destacado

Destacado (18)

Similar a Huawei bts3012 hardware structure issue1.0

Similar a Huawei bts3012 hardware structure issue1.0 (20)

Más de Đinh Công Thiện Taydo University

Más de Đinh Công Thiện Taydo University (20)

Último

Último (20)

Huawei bts3012 hardware structure issue1.0