Internal
BTS3012 ISSUE 1.0
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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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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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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
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Double transceiver subsystem
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Forepart of RF Antenna and feeder Subsystem subsystem
Page 9
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
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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
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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
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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)
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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 -
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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)
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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
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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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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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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
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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
SMA (female) Main 3 output port
RXA1 RXA2 TXA
RXA4
RXA3
SMA (female) Main 4 output port
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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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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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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Page 59
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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Page 64
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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Antenna Feeder subsystem Antenna Antenna Feeder Jumpers TMA
Antenna support Jumper Jumper
TMA
Jumper
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Feeder
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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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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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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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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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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
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TX B
RXB3
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DTRU
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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
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TX A
RXA3
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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
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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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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
TX 1 IN 1 TCOM IN2 TX 2
Cabinet top
power ( dBm ):( 46 or 47.8 ) -3.3-3.3-1.0
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DTRU
DTRU
DTRU
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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
TX 1 IN 1 TCOM IN2 TX 2
DTRU
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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
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TX1
TX 2
TX 1 IN 1 TCOM IN2 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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Summary
Functions and features of BTS3012 BTS3012 hardware structure Antenna and feeder system Typical configuration
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