OME201102 HUAWEI BTS3012 Hardware Structure ISSUE

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HUAWEI BTS3012 Hardware Structure:

HUAWEI BTS3012 Hardware Structure

Objectives:

Page 2 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

References:

Page 3 References BTS3012 Technical Manual BTS3012 Installation Manual BTS3012 User Manual

Contents:

Page 4 Contents Overview System Components Signal Processing Antenna and Feeder System Typical Configuration

Location:

Page 5 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 MAP TUP,ISUP MS MS MS

Features and Functions:

Page 6 Features and Functions Support 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:

Page 7 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

Contents:

Page 8 Contents Overview System Components Signal Processing Antenna and Feeder System Typical Configuration

Hardware structure:

Page 9 Hardware structure 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 Common subsystem NFCB Metro 100 DTMU DEMU E1 BITS Monitor TBUS/DBUS/CBUS MS FH_BUS Extension cabinet DBUS/ TBUS CBUS CBUS3 CBUS3 CBUS3 CBUS3 CBUS2 CBUS2 CBUS2 CBUS3 CBUS3 Protection for signal Electric tilt antenna & TMA feed Electric tilt antenna & TMA feed Electric tilt antenna &TMA feed CBUS3 FH_BUS FH_BUS RF signal RF signal RF signal

BTS3012 Cabinet and Boards:

Page 10 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

BTS3012 Cabinet and Boards:

Page 11 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 E MC 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 Double transceiver subsystem Common Subsystem Antenna Front-End of the RF Subsystem (DAFU) Cabinet Top Access Subsystem (DCTB)

BTS3012 Cabinet and Boards:

Page 12 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 E MC 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 Double transceiver subsystem Common Subsystem Antenna Front-End of the RF Subsystem (DAFU) Cabinet Top Access Subsystem (DCTB)

Common Subsystem:

Page 13 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:

Page 14 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:

Page 15 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 :

Page 16 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

Indicators on DTMU:

Page 17 Indicator Color Description Status Meaning LIU2 Green Indicates the transmission status of E1 port 2 and port 6 Off E1 port 2 is normal when SWT is out E1 port 6 is normal when SWT is on 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 LIU3 Green Indicates the transmission status of E1 port 3 and port 7 Off E1 port 3 is normal when SWT is out E1 port 7 is normal when SWT is on 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 LIU4 Green Indicates the transmission status of E1 port 4 and port 8 Off E1 port 4 is normal when SWT is out E1 port 8 is normal when SWT is on 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 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

Interface on the DTMU panel:

Page 18 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:

Page 19 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 alarms DMLC DEMU CBUS3 Monitor signal

Functions of DCSU:

Page 20 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 :

Page 21 The interfaces on the DCSU panel 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

Switch of DCSU:

Page 22 GM51DCSU VERB SW6 SW9 SW14 SW13 SW12 SW7 SW10 SW8 SW5 SW4 SW3 SW11 SW2 SW1 Switch of DCSU

Functions of DCCU:

Page 23 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 :

Page 24 The interfaces on the DCCU panel 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:

Page 25 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

BTS3012 Cabinet and Boards:

Page 26 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 E MC 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 Double transceiver subsystem Common Subsystem Antenna Front-End of the RF Subsystem (DAFU) Cabinet Top Access Subsystem (DCTB)

Cabinet Top Access Subsystem:

Page 27 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:

Page 28 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

Function of DELC:

Page 29 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

Function of DSAC:

Page 30 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

BTS3012 Cabinet and Boards:

Page 31 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 E MC 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 Double transceiver subsystem Common Subsystem Antenna Front-End of the RF Subsystem (DAFU) Cabinet Top Access Subsystem (DCTB)

Double transceiver subsystem :

Page 32 Double transceiver subsystem DTRU ( Double Transceiver Unit ) DTRB DTRB DTRU DTRU DTRU DTRU DTRU DTRU

Functions of DTRU:

Page 33 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 :

Page 34 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:

Page 35 Indicators on DTRU Indicator Color Description Status Meaning 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

PowerPoint Presentation:

Page 36 Interface Type Description 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 Connectors on DTRU

DTRU transmit mode:

Page 37 DTRU transmit mode No combining Diversity transmitter Power booster technology Wide band combining

No combining:

Page 38 No combining TCOM TRX0 TX TRX1 TX TX1 IN1 IN2 TX2 RXM1 RXD1 RXM2 RXD2 combiner

Diversity transmitter:

Page 39 Diversity transmitter TRX1 TRX0 TX TX TX1 IN1 TCOM IN2 TX2 Man made multi way combiner

Power booster technology:

Page 40 Power booster technology TRX1 TRX0 TX TX TX1 IN1 TCOM IN2 TX2 Same phase combiner

Wide band combining:

Page 41 Wide band combining TRX0 TX TRX1 TX TX1 IN1 TCOM IN2 TX2 combiner

DTRU receive mode:

Page 42 DTRU receive mode Independent receiver Dividing receiver Four diversity receiver

Independent receiver:

Page 43 Independent receiver TRX1 TRX0 TX TX TX1 IN1 TCOM IN2 TX2 RXM1 RXD1 RXM2 RXD2 divider combiner divider

Dividing receiver:

Page 44 Dividing receiver TRX0 TX TRX1 TX TX1 IN1 TCOM IN2 TX2 RXM1 RXD1 RXM2 RXD2 combiner divider divider

Four diversity receiver:

Page 45 Four diversity receiver TRX0 TX TRX1 TX divider divider TX1 IN1 TCOM IN2 TX2 RXM1 RXD1 RXM2 RXD2 combiner

Intra structure of DTRU:

Page 46 Intra structure of DTRU TRX0 TX TRX1 TX TX1 IN1 TCOM IN2 TX2 RXM1 RXD1 RXM2 RXD2 combiner divider divider

Functions of DTRB:

Page 47 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

BTS3012 Cabinet and Boards:

Page 48 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 E MC 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 Double transceiver subsystem Common Subsystem Antenna Front-End of the RF Subsystem (DAFU) Cabinet Top Access Subsystem (DCTB)

Front-End of the RF Subsystem:

Page 49 Front-End of the RF Subsystem DDPU (Dual Duplexer Unit for DTRU BTS) DCOM (Combining Unit for DTRU BTS)

Functions of DDPU:

Page 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 :

Page 51 Functional structure of the DDPU ANTB TXA TXB RXA4 duplexer divider duplexer divider ANTA RXA1 RXA2 RXA3 RXB1 RXB2 RXB3 RXB4

Indicators on DDPU :

Page 52 Indicators on DDPU Indicator Color Description Status Meaning 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

Interface on DDPU :

Page 53 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 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) Diversity 2 output port RXB3 SMA (female) Diversity 3 output port RXB4 SMA (female) Diversity 4 output port ANTA DIN (female) RF jumper port ANTB DIN (female) RF jumper port

Functions of DCOM:

Page 54 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

Interfaces on DCOM :

Page 55 Interfaces on DCOM Interface Type Description ONSHELL 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:

Page 56 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 FAN STATE COM PWR

Indicators on FAN BOX :

Page 57 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

Contents:

Page 58 Contents Overview System Components Signal Processing Antenna and Feeder System Typical Configuration

System Signal Flow:

Page 59 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:

Page 60 DL Signal Flow DDPU Um BSC BTS3012 Cabinet MS Antenna Feeder Abis DTRU DTMU

DL Signal Flow:

Page 61 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 :

Page 62 UL Signal Flow DAFU Um BSC BTS3012 Cabinet MS Antenna Feeder Abis DTRU DTMU

UL Signal Flow :

Page 63 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:

Page 64 Signaling Processing Signal Flow BTS3012 DDPU DTRU DTMU BSC Abis

Signaling Processing Signal Flow:

Page 65 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:

Page 66 Clock Signal Flow DTMU Boards in main cabinet Boards in slave cabinet A-bis Clock distribution cable between cabinets

Clock Signal Flow Description:

Page 67 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

Contents:

Page 68 Contents Overview System Components Signal Processing Antenna and Feeder System Typical Configuration

Antenna Feeder subsystem :

Page 69 Antenna Feeder subsystem Antenna Feeder Jumpers TMA

Antenna:

Page 70 Antenna In mobile communications systems, the antenna consists of an array of element antennas, as shown in Figure

Antenna:

Page 71 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

Lightning Arrester:

Page 72 Lightning Arrester is used to prevent the equipment from being damaged by the lightening current inducted by the core line of the feeder f eeder jumper Lightning Arrester Lightning Arrester

Types of Main Feeder:

Page 73 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

Antenna Pattern:

Page 74 Antenna Pattern The antenna pattern describes the radiating abilities of antennas in all directions Omni Antenna Directional antenna

Polarization:

Page 75 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

Contents:

Page 76 Contents Overview System Components Signal Processing Antenna and Feeder System Typical Configuration

Configuration Principles:

Page 77 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:

Page 78 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 (Diversity transmitter):

Page 79 Typical configuration S1/1/1 ( Diversity transmitter ) S1/1/1 Diversity transmitter / Four diversity receiver mode , each cell is configured one DTRU and two DDPU BSC data configuration should be Diversity transmitter mode Four diversity receiver 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 (No combining mode):

Page 80 Typical configurationS2/2/2 ( No combining 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 BSC data configuration should be No combining mode Dividing receiver 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 (Power booster technology) :

Page 81 Typical configurationS2/2/2 ( Power booster technology ) 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 Power booster technology mode Independent receiver mode Cabinet Top power ( dBm ) 49 - 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 S4/4/4 (Wide band combining):

Page 82 Typical configuration S4/4/4 ( Wide band combining ) S4/4/4 Wide band combining mode , each cell is configured two DTRU and one DDPU BSC data configuration should be Wide band combining mode Dividing receiver 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:

Page 83 Typical Configuration S1/2/1 S1/2/1,cell1 and cell 3 share one DTRU, cell 2 need one DTRU and one DDPU BSC data configuration should be No combining mode Independent receiver mode No combining mode Dividing receiver mode Cabinet Top power ( dBm ) ( 46 or 47.8 ) -1.0 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 cell1 cell3 cell2 DTRU1 DTRU2

Typical configuration S8/8/8:

Page 84 Typical configuration S8/8/8 S8/8/8 cell 1 and cell 3 are configured 4 DTRU,2 DCOM and 1 DDPU BSC data configuration should be Wide band combining mode Dividing receiver 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 DCOM DCOM

Typical configuration S8/8/8:

Page 85 Typical configuration S8/8/8 S8/8/8 cell2 is configured 4 DTRU,2 DCOM and 2 DDPU, cell 2 need cross the cabinet BSC data configuration should be Wide band combining mode Dividing receiver mode Cabinet top power ( dBm ) ( 46 or 47.8 ) -3.3-3.3-1.0 Attention : only support RF 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 DCOM DCOM

Combined Cabinet Signal Cables:

Page 86 Combined Cabinet Signal Cables 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

Summary:

Page 87 Summary Functions and features of BTS3012 BTS3012 hardware structure Antenna and feeder system Typical configuration

TMA:

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

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