HUAWEI BTS3900 Hardware Structure and Principle-200903-IsSUE1.0-B

www.huawei.com

HUAWEI Confidential

Security Level: Internal Use 2009-02

HUAWEI BTS3900 Hardware Structure and Principle

ISSUE1.0

Wireless Case and Training

HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confidential

BTS3900 Base Station is the fourth generation base station

developed by Huawei. It features a multi-mode modular design

and supports three working modes: GSM mode, GSM+UMTS

dual mode, and UMTS mode through configuration of different

software. In addition, the BTS3900 supports smooth evolution

to the Long-Term Evolution (LTE).


Know the functions and features of BTS3900 Master the hardware structure and function of BTS3900 Master the typical configuration and RF Cable Connections


BTS3900 Hardware Description(V100R001_01) HUAWEI BTS3900&BTS3900A MRFU Deployment Guide


Chapter 1 Chapter 1 BTS3900 BTS3900 Product DescriptionProduct Description

Chapter 2 BTS3900 System Structure


Location

PSTN ISDN

PSPDN

Um Interface

BTS3900

BTS3900

BTS3900

BTS

OMC

HLR/AUC/EIR

BSC/RNC

MSC/VLR

SMC/VM

A/Iu Interface

MAP

MAP

TUP,ISUPMS

MS

MS

MS: Mobile Station BTS: Base Transceiver Station BSC: Base Station Controller

HLR: Home Location Register AUC: Authentication Center RNC: Radio Network Controller

MSC: Mobile Switching Center VLR: Visitor Location Register SMC: Short Message Center

VM: Voice Mailbox EIR: Equipment Identity Register OMC: Operation and Maintenance Center


BTS3900 Product Description The BTS3900 is comprised of the BBU3900, MRFU, and indoor macro cabinet. The

BBU3900 and the MRFU are installed in the indoor macro cabinet. The PS4890 meets

the requirements of different applications when the backup power or transmission

equipment space is required.

BTS3900 system structure PS4890 system structure


Features of BTS3900 Advanced Platform-Based Architecture

Based on the unified hardware platform, the BTS3900 supports three working modes: GSM

mode, GSM+UMTS dual mode, and UMTS mode through configuration of different software.

In addition, the BTS3900 supports smooth evolution to the Long-Term Evolution (LTE). The RF module integrates the duplexer and the Transceiver Unit (TRU), thus enhancing integrity

of RF parts and meeting future requirements for a compact, high-efficiency, and low-cost base

station. Supports whole frequency band of PGSM 900MHz, high 45MHz frequency band and low 45MHz

frequency band of DCS1800MHz, high 40MHz frequency band and low 40MHz frequency band

of 1900MHz.

High Capacity When the BTS3900 works in GSM mode, a BBU3900 supports the maximum cell configuration

of S24/24/24. When the BTS3900 works in GSM+UMTS dual mode, a BBU3900 supports the maximum cell

configuration of GSM S4/4/4 + UMTS S2/2/2 or GSM S5/5/5 + UMTS S1/1/1. When the BTS3900 works in UMTS mode, a BBU3900 supports 24 cells, 1,536 CEs in the

uplink, 1,536 CEs in the downlink, and the maximum configuration of 3 x 8.


Features of BTS3900 Transmission Sharing

Sharing the CPRI port. The CPRI data of the GSM and UMTS networks can be multiplexed on the

same optical cable, which reduces the quantity of CPRI ports. Supports co-transmission between the GSM and the UMTS. Sharing transmission resources

between the Abis and the Iub interfaces.

Flexible Clock Synchronization Modes Upper synchronization clock, extract clock from Abis/Iub interface. Extract clock from GPS (Global Positioning System). Synchronization with the IP clock, a highly cost-effective clock solution, which can be obtained

through software upgrade without additional hardware. Clock phase lock, tracing, and memory functions and free-run synchronization mode. When the

clock operates in free-run mode, the system can keep operational for at least 90 days at normal

temperature.


Features of BTS3900 Networking Capability

The BTS3900 supports multiple network topologies, such as star, tree, chain, and ring

topologies. Supports Flex Abis networking. When working in UMTS mode, the BTS3900 supports ATM and IP dual stack to protect

operators' early investment in ATM transport. Supports optimized transmission on the Abis interface.

Low Power Consumption


Chapter 1 BTS3900 Product Description

Chapter 2 BTS3900 System StructureChapter 2 BTS3900 System Structure


AbbreviationAbbreviation Description

GTMU Transmission& Timing& Management Unit for BBU

WMPT WCDMA Main Processing and Transmission Unit

WBBPa WCDMA Baseband Process unit Type A

UTRP Universal Transmission Processing Unit

UPEAUniversal power and Environment interface unitType A (-48v)

BSBC Universal BBU Subrack Backplane Type C (2U)

UBFA Universal BBU Fan Unit Type A (2U)

UEIU Universal Environment Interface unit

UELP Universal E1/T1 Lighting Protection unit

UFLP Universal FE/GE Lighting Protection unit

CPRI Common Protocol Radio Interface

APM30H Advanced Power Module

HEUA The Heat Exchange Unit Type A

HPMI The Hert Power Monitoring Interface unit


Sector 1 BTS3900Sector 1 BTS3900 CabinetCabinet

Sector 2 PS4890 Cabinet

Sector 3 BTS3900 Hardware Components

Sector 4 BTS3900 New Hardware

Sector 5 MRFU Working Mode


Appearance of the BTS3900 Cabinet The BTS3900 cabinet is designed in compliance with the IEC297 standard. It is a

vertical cabinet.


Hardware Structure of the BTS3900

Typical configuration of the BTS3900 cabinet (-48V)

Hardware Structure of the BTS3900 (-48V) The BTS3900 cabinet (-48V) uses the external -48V DC input. The DC power is directly led

into the DCDU-01 and the DCDU-01 distributes the DC power to each component in the

cabinet. The BTS3900 cabinet (-48V) consists of the following components: the MRFUs, BBU,DCDU-

01, and FAN unit. You can optionally install devices of 3U in height in the spare space of the

cabinet.


Hardware Structure of the BTS3900 Hardware Structure of the BTS3900 (+24V)

The BTS3900 cabinet (+24V) uses the external +24V DC input. The PSUs (DC/DC) convert

the external input power into -48V DC power and supply the -48V DC power to the DCDU-

01.Then, the DCDU-01 distributes the -48V DC power to each component in the cabinet. The BTS3900 cabinet (+24V) consists of the following components: the MRFUs, BBU, DCDU-

01, PSUs (DC/DC), and FAN unit.

Typical configuration of the BTS3900 cabinet (+24V)


Hardware Structure of the BTS3900 Hardware Structure of the BTS3900 (~220V)

The BTS3900 cabinet (~220 V) uses the external 220 V AC input. The PSUs (AC/DC) convert

the external input power into -48 V DC power and supply the -48 V DC power to the DCDU-

01.Then, the DCDU-01 distributes the -48 V DC power to each component in the cabinet. The BTS3900 cabinet (~220 V) consists of the following components: the MRFUs,

BBU,DCDU-01, PMU, PSUs (AC/DC), and FAN unit.

Typical configuration of the BTS3900 cabinet (220 V)


Sector 1 BTS3900 Cabinet

Sector 2 PS4890Sector 2 PS4890 CabinetCabinet





Appearance of the PS4890 Cabinet The PS4890 cabinet is designed in compliance with the IEC297 standard. It is a

vertical cabinet.


Hardware Structure of the PS4890

1 、 AC/DC power system 2 、 DCDU-04

3 、 DCDU-034 、 Copper bus bar for the negative poles of the battery group

5 、 Battery support plate 6 、 Baffle plate

7 、 Copper busbar for the positive poles of the battery group

The PS4890 cabinet contains the power system and modules such as DCDU-04 and

DCDU-03. The PS4890 cabinet configured with 48V 50 Ah, 48V 92 Ah, or 48V 184 Ah battery groups

provides the following functions: The power system converts the AC power into -48 V DC power and provides three outputs to the

battery groups, DCDU-04, and DCDU-03 through power distribution. The DCDU-04 provides two DC outputs to the BTS3900 cabinet or other primary BTSs. The DCDU-03 provides nine DC outputs to the transmission equipment.


Installation of BTS3900 and PS4890 Together

Cable Number Cable Name Quantity

P1 、 P2 DCDU-04 output power cables 2

S1 Environment monitoring signal

cable

between the PMU and the BBU

1

Installation of BTS3900 and PS4890 in stack mode and side-by-side mode.




Sector 3 BTS3900Sector 3 BTS3900 Hardware ComponentsHardware Components




BTS3900 Components BTS3900 Hardware includes:

BBU3900 Equipment MRFU (Multi carrier Radio Filter Unit) DCDU-01 (Direct Current Distribution Unit) FAN Unit GATM(GSM Antenna and TMA Control module) SLPU （ Signal Lightning Protection Unit） PMU module PSU module （ DC/DC） PSU module （ AC/DC） Power subrack （ DC/DC） Power subrack （ AC/DC）


BBU3900 Equipment The BBU3900, which features a case structure, can be installed in a 19-inch-wide

and 2U-high indoor space or outdoor protective cabinet. BBU3900 equipment includes:

GTMU WMPT WBBP UTRP UPEU UEIU UELP UFLP UBFA


Functions of the BBU3900

As the baseband processing unit, the BBU3900 provides ports for connection

between the dual mode base station and the BSC/RNC and between the BBU3900

and the RF modules. The BBU3900 has the following functions:

Provides ports for communication between the base station and the BSC/RNC. Provides CPRI ports for communication between the BBU and the RF modules. Provides USB ports, facilitating the automatic software upgrade of the dual-mode base station

when a USB disk is inserted during software installation and data configuration. Provides an OM channel between the base station and the LMT or the M2000 to operate and

maintain the base station. Processes uplink and downlink data. Manages the entire dual-mode system in terms of OM and signaling processing. Provides the system clock.


BBU3900 Slots

The slots of the BBU3900 GSM, BBU3900 GU, and BBU3900 UMTS are the same.


Board configuration principles of the BBU3900 GSM BBU3900 GSM board includes: GTMU 、 UBFA 、 UPEU 、 UEIU 、 UELP.

Board

Name

Optional/

Mandatory

Maximum

Number

Slot Configuration

Limitations

GTMU Mandatory 1 Slot 5 and Slot 6 Only configured in slot 5 and slot 6

UBFA Mandatory 1 UBFA Only configured in the FAN slot

UPEU Mandatory 2 PWR1 or PWR2 Preferentially configured at the PWR2

slot in the case of a single UPEU

UEIU Optional 1 PWR1 ——

UELP Mandatory 2 Slot 0 or Slot 4 In the case of less than or equal to four E1s, one UELP is

required and installed in slot 0. In the case of more than four but

less than or equal to eight E1s, two UELPs are required and

installed in slot 0 and slot 4. In the case of more than eight E1s,

the SLPU is required and the UELPs are installed in the SLPU.

Typical configuration of the BBU3900 GSM


Board configuration principles of the BBU3900 UMTS BBU3900 UMTS board includes: WMPT 、 WBBP 、 UBFA 、 UPEU 、 UEIU 、

UELP UFLP 、 UTRP.

Board

Name

Optional/

Mandatory

Maximum

Number

SlotConfiguration Limitations

WMPT Mandatory 2 Slot 6 or Slot 7 Preferentially configured in slot 7 in the case of a single WMPT

WBBP Mandatory 4 Slot 0 － Slot 3Preferentially configured in slot 3 ,slot 0 and slot 1 in the case of the WBB

P that transmits CPRI signals,slot 2 is reserved.

UBFA Mandatory 1 FAN Only configured in the FAN slot

UPEU Mandatory 2 PWR1 or PWR2 Preferentially configured in the PWR2 slot in the case of a single UPEU

UEIU Optional 1 PWR1 -

UELP Optional 2 Slot 0 or slot 4

In the case of less than or equal to four E1s, one UELP is required and

installed in slot 4. In the case of more than four but less than or equal to

eight E1s, two UELPs are required and installed in slot 0 and slot 4. In the

case of more than eight E1s, the SLPU is required and the UELPs are

installed in the SLPU.

UFLP Optional 2 Slot 0 or slot 4 Preferentially configured in slot 4

UTRP Optional 6 Slot 0 － Slot 5 ——

Typical configuration of the BBU3900 UMTS


Board configuration principles of the BBU3900 GUBoard

Name

Optional/

Mandatory

Maximum

Number

SlotConfiguration Limitations

WMPT Mandatory 1 Slot 7 Preferentially configured in slot 7 in the case of a single WMPT

GTMU Mandatory 1 Slot 5 and slot 6 Only configuredin slot 5 and slot6

WBBP Mandatory 4 Slot 0 － Slot 3Only configured in slot 2 and slot 3 in the case of the WBBP that transmits

CPRI Signals

UBFA Mandatory 1 FAN Only configured in the FAN slot

UPEU Mandatory 2 PWR1 o PWR2 Preferentially configured in the PWR2 slot in the case of a single UPEU

UEIU Optional 1 PWR1 -

UELP Optional 2 Slot 0 or slot 4

In the case of less than or equal to four E1s, one UELP is required and

installed in slot 4. In the case of more than four but less than or equal to

eight E1s, two UELPs are required and installed in slot 0 and slot 4. In the

case of more than eight E1s, the SLPU is required and the UELPs are

installed in the SLPU.

UFLP Optional 2 Slot 0 or slot 4 Preferentially configured in slot 4

UTRP Optional 4 Slot 0 － Slot 4 ——

Typical configuration of the BBU3900 GU


BBU Hardware – GTMU Board

The GSM Transmission, Timing, and Management Unit for BBU (GTMU)

controls and manages the entire BTS in GSM mode. It provides interfaces

related to the reference clock, power monitoring, OM, and external alarm

collection. Functions:

Controlling, maintaining, and operating the BTS. Providing fault management,

configuration management, performance management, and security management. Monitoring the fan module and the power supply module. Providing four routes of E1 transmission. Providing CPRI ports for the communication with the RF modules. Distributing and managing BTS clock signals. Providing the Ethernet port for local maintenance. Providing clock output for testing.


Board Port Connector Type Description

GTMU

CPRI0 ～CPRI5

SPFPorts for the communication between the BBU and the RF

module; support input and output of the optical and

electrical signal.

ETH RJ45 Port for local maintenance and commissioning

FE0 RJ45Connects the BBU to a routing device in the equipment

room through the Ethernet cable to transmit network

information.

FE1 DLCConnects the BBU to a routing device in the equipment

room through the optical cable to transmit network

information.

USB USB Enables the automatic software upgrade from a USB disk.

TST USB Provides a reference clock for the tester.

E1/T1 DB26 femaleProvides the input and output of the four E1/T1 signals

between the GTMU and the UELP or between the GTMU

and the BSC.


Ports on the GTMU panel:



LEDs on the GTMU:

LED Color Status Description

RUN Green

ON The board is faulty.

OFF No power supply is available or the board is faulty.

ON for 1s and OFF for 1s The board is operational.

ON for 2s and OFF for 2s The OML link is abnormal.

ON for 0.125s and OFF for 0.125s The board is loading software.

ALM RedON A fault occurs in the running board.

OFF No alarm is generated.

ACT GreenON The board is operational.

OFF The board is faulty.

LIU0~LIU3 Green

ON This link is not used.

ON for 0.125s and OFF for 0.125s A remote E1/T1 alarm is generated.

OFF This link is operational.

CPRI0~CPRI5

Green ON The CPRI link is normal.

Red ONThe reception of the optical module is abnormal and an

alarm is generated.



DIP Switches:

DIP SwitchDIP Status

Description1 2

SW1

ON ON The E1 impedance is set to 75 ohms.

OFF ON The E1 impedance is set to 120 ohms.

ON OFF The T1 impedance is set to 100 ohms.


Description1 2 3 4

SW2

ON ON ON ONWhen four 75- ohm E1 links are faulty, all the

DIP bits of S2 should be set to ON

(unbalanced mode) so that the Faults are rectified.

OFF OFF OFF OFFAll the DIP bits of S2 are set to OFF (balanced

mode) by default in all modes.



DIP Switches:


Description1 2 3 4

SW5

ON ON ON ON The E1 link cannot be bypassed.

OFF ON ON OFF The E1 link of the Level 1 cascaded BTS can be bypassed.

ON OFF ON OFF The E1 link of the Level 2 cascaded BTS can be bypassed.

OFF OFF ON OFF The E1 link of the Level 3 cascaded BTS can be bypassed.

ON ON OFF OFF The E1 link of the Level 4 cascaded BTS can be bypassed.

OFF ON OFF OFF The E1 link of the Level 5 cascaded BTS can be bypassed.


Description1 2 3 4

SW4

ON ON ON ON The E1 link can be bypassed.

OFF OFF OFF OFF The E1 link cannot be bypassed.


BBU Hardware – WMPT Board

This describes the WCDMA Main Processing and Transmission unit

(WMPT). It is the BBU3900 main control and transmission board that

processes the signals and manages the resources for other boards. The WMPT has the following functions:

Providing Operation and Maintenance (OM) functions such as configuration

management, equipment management, performance monitoring, signaling processing,

and active/standby switchover and providing OM channels connected to the OMC (LMT

or M2000). Providing the reference clock. Processing signaling and managing resources for other boards in the BBU. Providing USB ports, one of which facilitates automatic base station upgraded when a

USB disk is inserted during software installation and data configuration. Providing four E1s/T1s which support ATM and IP protocols. Providing one FE electrical port and one FE optical port which support the IP protocol.


Board Port Connector Type Description

WMPT

E1/T1 DB26 connector E1

FE0 RJ45 connector FE electrical port

FE1 SFP connectorFE optical port

GPS SMA connector GPS antenna

ETH RJ45 connector Commissioning Ethernet port

USB USB connector USB loading port

TESTUSB connector

USB testing port

RST — Resetting the BBU


Ports on the WMPT:



LEDs on the WMPT:


RUNGreen

ONThe power input is available, but the board is

faulty.

OFF The power supply is available.

1s ON and 1s OFFThe board in normal configuration is running

properly.

0.125s ON and 0.125s

OFF

The software is being loaded to the board, or the

board is not in use.

ALM RedON The board has alarms on hardware.


ACT GreenON The board is in active mode.

OFF The board is in standby mode.



LEDs beside the three ports:


LEDs beside the FE1

optical port

Green (LINK)ON The connections are functional.

OFF The connections are faulty.

Green (ACK)Blinking Data transmission is ongoing.

OFF No data transmission is ongoing.

LEDs beside the FE0

electrical port



Yellow (ACK)Blinking Data transmission is ongoing.


ETH



Yellow (ACK) Blinking Data transmission is ongoing.




DIP switches on the WMPT:

DIP switch DIP Bit T1 Mode 120-ohm E1 Mode 75-ohm E1 Mode

SW1

1 ON OFF ON

2 ON OFF ON

3 OFF ON ON

4 OFF ON ON

DIP switch DIP Bit Balanced Mode Unbalanced Mode

SW2

1 OFF ON

2 OFF ON

3 OFF ON

4 OFF ON


BBU Hardware – WBBP Board

This describes the WCDMA Baseband Process Unit (WBBP) board. It is a

mandatory board of the BBU3900 that processes baseband signals. The WBBP has the following functions:

Provides the CPRI ports for communication between the BBU and the RFU, and supporting

CPRI ports in 1+1 backup mode. Processes uplink and downlink baseband signals.

There’re two types of WBBP board: WBBPa and WBBPb.



Specifications of the WBBPs:

Board Number of Cells Number of UL CEs Number of DL CEs

WBBPa 3 128 256

WBBPb1 3 64 64

WBBPb2 3 128 128

WBBPb3 6 256 256

WBBPb4 6 384 384



LEDs on the panel of the WBBP:


RUNGreen

ON There is power supply, but the board is faulty.

OFF There is no power supply, or the board is faulty.

ON for 1s and OFF for 1s The board is running properly.

ON for 0.125s and OFF for 0.125s The board is loading software.

ALM RedON The board has a hardware alarm.

OFF The board is normal.

ACT GreenON The board is running.

OFF The board is not in use.

CPRI0/CPRI1/CPRI2

Red/

Green

OFF The optical module is not configured, or it is powered off.

ON (green) The CPRI link is normal, and the RFU has no hardware faulty.

ON (red) The optical module is not in position, or the CPRI link is faulty.

ON for 0.125s and OFF for

0.125s (red)

The RFU on the CPRI link has a hardware fault, and the RFU

needs to be replaced.

ON for 1s and OFF for 1s (red)The RFU on the CPRI link has a VSWR alarm, antenna alarm, or

external alarm.


BBU Hardware – UPEU Board

This describes the Universal Power and Environment Interface Unit

(UPEU) board. It is a mandatory board of the BBU3900 that converts -48

V or +24 V DC to +12 V DC. The UPEU has the following functions:

Converting -48 V or +24 V DC to +12 V DC that is applicable to the boards. Providing two ports with each transmitting one RS485 signal and another two

ports with each transmitting four dry contact signals. Providing reverse connection protection for power cable connectors.

The UPEU is classified into the Universal Power and Environment

Interface Unit Type A (UPEA) and the Universal Power and Environment

Interface Unit Type B (UPEB). The UPEA converts -48 V DC to +12 V DC

and the UPEB converts 24 V DC to 12 V DC.


BBU Hardware – UEIU Board

This describes the Universal Environment Interface Unit (UEIU) board of the

BBU3900. The UEIU transmits monitoring signals and alarm signals from

external devices to the main control board. Ports on the UEIU:

Port Connector Type Description

MON0 RJ45 One RS485 signal

MON1 RJ45 One RS485 signal

EXT-ALM0 RJ45 Four dry contact signals

EXT-ALM1 RJ45 Four dry contact signals


BBU Hardware – UELP Board

The Universal E1/T1 Lightning Protection (UELP) is a universal E1/T1

surge protection unit. The UELP is optionally installed in the SLPU or

BBU. Each UELP provides surge protection for four E1s/T1s.

Port Connector Type Description

INSIDE DB25 E1 transfer transmission port

OUTSIDE DB26 E1 transmission port

DIP Switch DIP Status Description

1 2 3 4

S1 ON ON ON ON 75-ohm E1 cable

OFF OFF OFF OFF 120-ohm E1 cable or 100-ohm T1 cable

The UELP has one DIP switch, which is used to select whether the receive terminal is grounded.


BBU Hardware – UFLP Board

The universal FE lightning protection (UFLP) board is optionally installed

in the SLPU or BBU3900. Each UFLP supports 2-way FE surge protection.

Port Location Port Quantity Connector Type

INSIDE FE0 、 FE1 2 RJ45

OUTSIDE FE0 、 FE1 2 RJ45


BBU Hardware – UTRP Board

This describes the Universal Transmission Processing unit (UTRP) board. It

is a transmission extension board of the BBU3900 and provides eight

E1s/T1s and one unchannelized STM-1/OC-3. The UTRP has the following functions:

Providing extension Iub transmission ports which support eight E1s/T1s and one

unchannelized STM-1/OC-3. Supporting ATM and IP transport. Supporting cold backup.



The panel of the UTRP configured with the UAEU or UIEU is different from

that of the UTRP configured with the UUAS.

Sub-Board Port

UAEU （ Universal ATM over E1/T1 Interface and Processing Unit） Ports for eight ATM over E1s/T1s

UIEU （ Universal IP Packet over E1/T1 Interface and Processing Unit） Ports for eight IP over E1s/T1s

UUAS （ Universal Unchannelized ATM over SDH/SONET Card） Port for one unchannelized

STM-1/OC-3

The UTRP can be configured with different sub-boards to support different ports.

Panel of the UTRP (with eight E1s/T1s)

Panel of the UTRP (with one STM-1)



LEDs on the UTRP:


RUNGreen

ONThe board has power input, yet the board is

faulty.

OFF The power supply or the board is faulty.

1s ON, 1s OFF The board is running properly.

0.125s ON, 0.125s OFF Software is being loaded to the board.

2s ON, 2s OFF The board is under test.

ALM RedON The board is reporting alarms and is faulty.

OFF The board is running properly.

ACT GreenON The board is in active mode.

OFF The board is in standby mode.



The UTRP has three DIP switches: SW1 and SW2 for setting the protection

grounding for the RX end of the E1 cable and SW3 for selecting the impedance

mode for the E1 signal cable.

DIP Switch DIP BitBalanced Mode

Unbalanced Mode

SW1

1 OFF ON

2 OFF ON

3 OFF ON

4 OFF ON

DIP Switch DIP BitBalanced Mode

Unbalanced Mode

SW2

1 OFF ON

2 OFF ON

3 OFF ON

4 OFF ON

DIP Switch DIP Bit75-Ohm E1

Mode

120-Ohm E1

ModeT1 Mode

SW3

1 ON ON OFF

2 ON ON OFF

3 ON OFF ON

4 ON OFF ON


BBU Hardware – UBFA Module

This describes the Universal BBU Fan Unit Type A (UBFA) module of the

BBU3900. The UBFA controls the fan speed and detects the temperature of

the fan board.


STATE

Green

0.125s ON, 0.125s OFF

The module is not

registered, and no

alarm is reported.

1s ON, 1s OFFThe module is

running properly.

Red OFF No alarm is reported.

1s ON, 1s OFFThe module is

reporting alarms.


BBU Cable Connection

This describes the BBU3900

cables. The BBU3900

cables are the BBU PGND

cable, BBU power cable, E1

cable, E1 surge protection

transfer cable, CPRI optical

cable, inter-CPRI signal

cable, BBU alarm cable,

monitoring signal cable

between the APMI and the

BBU, FE cable, FE surge

protection transfer cable,

monitoring signal cable for

the EMUA, and GPS clock

signal cable.


BBU3900 Cable

BBU3900 Cable List:

Power Cable E1 Surge Protection Transfer Cable

FE Cable CPRI Optical Cable


BBU Cable

BBU3900 Cable List:

(1) RJ45 connector

(2) cold-pressed terminal

Monitoring Signal Cable Between the OFB and the BBU

Monitoring Signal Cable Between the APMI and the BBU

(1) RJ45 connector

(2) cold-pressed terminal

(3) ring terminal (4) 3PIN connector


MRFU Module

The MRFU is a multi-carrier RF filtering unit. One MRFU supports a maximum

of 6 carriers in GSM mode, 4 carriers in UMTS mode, 6 carriers in GSM+UMTS

mode. Functions:

Implements the direct frequency conversion technique in the transmit channel, modulates

the baseband signals to GSM RF signals; then, sends the signals to the antenna for

transmission through the duplex filter after filtering, amplifying, and combining the RF

signals. The combining can be performed as required. Receives RF signals from the antenna and performs down-conversion, amplification, analo

g-to-digital conversion, digital down-conversion, matched filtering. Provides power sharing. Improves the network coverage, reduces the interference and

power consumption and save the device cost. Provides power control, reverse power detection. Provides frequency synthesis and loopback test. Generates the CPRI clock, recovers the CPRI clock of lost synchronization, and detects

alarms. Provides the function of DPD/BPD.


Logical structure of the MRFU

The MRFU consists of the high-speed interface unit, signal processing unit,

power amplifier, and duplexer.


MRFU Board

Size ： 397.25mm （ h ） ×70.62mm （ w ） ×305mm （ d ） Weight ： 10Kg Ports on the panel:

Port Type Label Connector Type Description

Port for

transceiving

RF signals

ANT_RXB DIN connector Connecting to the antenna subsystem.

ANT_TX/RXA

CPRI CPRI0 SFP female connector Connecting to the BBU, or the upper-level RFU during the cascading.

CPRI1 Connecting to the lower-level RFU during the cascading.

Interconnection

port for RF

Receive signals

RX_INB QMA female

connector

Input port of diversity signals in theantenna channel.

RX_OUTA Output port of diversity signals in theantenna channel.

Power supply port PWR 3V3 power connector Feeding power.

Monitoring port MON RJ45 connector RS485 Monitoring 、 debugging port.


MRFU Board

LEDs on the MRFU panel:


RUN Green ON The power input is normal, but the module is faulty.

OFF There is no power supply, or the module is faulty.

1s ON, 1s OFF The module is running properly.

0.2s ON, 0.2s OFF The software is being loaded to the module.

ALM Red 1s ON, 1s OFF A fault alarm is generated.


ACT Green ON The module is functional and is correctly connected to the BBU.

OFF The connection with the BBU is not set up.

VSWR Red OFF No VSWR alarm is generated.

ON The VSWR alarm is generated on the ANT_TX/RX port.

CPRI0 Red/Green ON (green) The CPRI link is normal.

ON (red) The interface module fails to receive signals.

1s ON, 1s OFF (red) The CPRI link is out of lock.

CPRI1 Red/Green ON (green) The CPRI link is normal.

ON (red) The interface module fails to receive signals.

1s ON, 1s OFF (red) The CPRI link is out of lock.


FAN Unit

The FAN unit, also called the fan box module, dissipates the heat in the

cabinet. One FAN unit has four independent fans. The FAN unit has the following functions:

Providing forced ventilation and dissipation for the cabinet. Supporting the temperature detection.

The FAN unit supports: Adjustment based on the temperature and adjustment controlled by the main control

unit. Fan rotation control function. The FAN unit stops the rotation of the fans when the

ambient temperature is low.


FAN Unit

Ports on the panel of the FAN unit:

Connector Port Connector Type Description

Socket for

power supply-48V connector Introducing the -48 V DC power

Temperature

sensor portSENSOR RJ45 Connecting the external temperature sensor

Communication portCOM OUT RJ45 Cascading the lower-level FAN unit

COM IN RJ45 Connecting the main control unit。

LEDs on the panel of the FAN unit:


RUN Green

0.125s ON, 0.125s OFFThe module runs normally but the communication with the main

control unit is not established.

1s ON, 1s OFFThe module runs normally and the communication with the main

control unit is established.

OFF steady There is no power input, or the module is faulty.

ALM Red1s ON, 1s OFF The module is reporting alarms.

OFF steady No alarm is generated.


GATM Module

The GSM antenna and TMA control module (GATM) is a module that

controls the antenna and TMA. The GATM is optional. The GATM is

optionally installed in the power cabinet or transmission cabinet when the

MRFU module is configured. The GATM has the following functions:

Controlling the RET antenna. Supplying power to the TMA. Reporting the RET control alarm signals. Monitoring the current from the feeder. Not support common TMA and RET antenna at the same time.


GATM Module

Ports on the GATM:

Port Connector Function

ANT0 ～ANT5

SMA female connector

Providing power for the RET antenna and

transmitting control signals for the RET

antenna

COM1 RJ45 connector Connecting to the BBU

COM2 RJ45 connectorProviding the extended RS485 port to be

cascaded with other devices

-48V3W3 power connector

Receiving the -48 V power input


GATM Module

LEDs on the GATM panel:

LED Color Function Status Description

RUN GreenIndicator of the

board Running

status

On for 2s and off for 2sThe power supply is normal but the

communication with the BBU is abnormal.

On for 1s and off for 1sThe board is running normally and the

communication with the BBU is normal.

OffNo power input is available, or

the module is faulty.

ACT GreenIndicator of the

Service running

status

On The AISG link is normal.

Off The AISG link is abnormal.

Blinking frequently and

irregularlyThe AISG link is transmitting data.

ALM Red Alarm indicatorOn

An alarm is generated, such as

an over current alarm.

Off The module runs normally.


SLPU

The signal lightning protection unit (SLPU), which can be optionally configured

with the UFLP or UELP, provides the signal surge protection. The SLPU is an

optional module of the BTS3900 cabinet (-48 V) or the power distribution

cabinet.


Power Subrack (DC/DC)

The power subrack (DC/DC) provides access for the external +24 V DC. In the

power subrack, the PSU (DC/DC) converts the +24 V DC power into the -48 V DC

power, and then leads the -48 V DC power to the DCDU-01 over the power cable

through the wiring unit of the power subrack. PSU (DC/DC). Wiring Unit (+24 V).


Power Subrack (DC/DC) -- PSU (DC/DC)

The power supply unit (PSU) converts the +24 V DC into the -48 V DC that is led

into the direct current distribution unit. Function:

Converting +24 V DC power to -48 V DC power and leading the -48 V DC power to the DCDU. Monitoring alarms related to module faults (such as output overvoltage, no output, and fan

faults), alarms related to module protection (such as overtemperature protection, and input

overvoltage/undervoltage protection), and power out-of-position alarm.


Power Subrack (DC/DC) -- PSU (DC/DC)

LEDs on the panel of the PSU (DC/DC):

No. LED Color Status Description

1Power running LED

Green

ON steady

normal

OFF steady

There is no power input, or the input

protection tube is damaged.

2Protection LED

Yellow

OFF steady

normal

ON steady

There is an abnormal input or output

voltage, or there is an overheated or

a loosely connected rectifier module.

3 Fault LED Red

OFF steady

normal

Blinking fan fault


Power Subrack (DC/DC) -- Wiring Unit (+24 V)

The wiring unit of the power subrack (+24 V) provides the power input wiring

terminal, power output wiring terminal, ALM port, and PRESENT port, which are

respectively connected to the +24 V input power cable, -48 V output power cable,

PSU monitoring signal cable, and PSU in-position signal cable.

No. Name Description

1

Wiring terminal for

introducing power

The + wiring terminal and – wiring

terminal are respectively connected to

the +24 V power cable and +24 V RTN cable.

2

Wiring terminal for

supplying power

The wiring terminals LOAD1(-) and LOAD2(-)

are connected to the -48 V power cable. The

RTN(+) wiring terminal is connected to the

-48 V RTN cable.

3 PRESENT portThe PRESENT port is connected to the

in-position signal cable for the PSU.

4 ALM portThe ALM port is connected to the

monitoring signal cable for the PSU.


Power Subrack (AC/DC)

The power subrack (AC/DC) consists of the PMU, PSU (AC/DC) and the wiring

unit of the power subrack (220 V). The power subrack (AC/DC) converts the 220 V

AC power to the -48V DC power. PMU PSU (AC/DC) Wiring Unit (220 V)


Power Subrack (AC/DC) -- PMU

The Power and Environment Monitoring Unit (PMU) provides a comprehensive

function of power supply management, power distribution check, and alarm

reporting. The PMU performs the following functions:

Communicating with the main control unit through the RS232/RS422 serial port. Providing comprehensive functions of power system management and battery charge and

discharge management. Detecting and reporting water damage alarms, smoke alarms, door status alarms, and

standby Boolean value alarms, and reporting ambient humidity and temperature, battery

temperature, and standby analog values. Detecting power distribution, reporting related alarms, and reporting dry contact alarms.



Ports on the PMU:

Ports on the front panel of the PMU

Backplane of the PMU

No. Pot Function

1 RS232/RS422 port Used for communication with the main control unit

3Power test port Used for measuring power voltages by using an ordinary

multimeter through -48 V and 0 V power test holes.

4 TEST port Used for testing

5 Battery control switch

Used for powering on and off the batteries through the ON

and OFF control ports.Press and hold the port ON for 5s to 10s until the battery

is powered on.Press and hold the port OFF for 5s to 10s until the

battery is powered off.

NOTEYou need to insert a small round bar into the hole when

you operate the battery

6 COM port Used for connecting to the external signal transfer board

7 Backplane port Used for connecting to the backplane



LEDs on the panel of the PMU:

No

.Label Color Status Description

2

RUNGreen

Blinking (ON for 1s and

OFF for 1s)

The PMU is functional, and the communication

with the main control unit is normal.

Blinking (ON for

0.125s and OFF for

0.125s)

The PMU is functional, but the communication

with the main control unit fails. If the PMU does

ot communicate with the main control unit for

one minute, the communication fails.

ON or OFFThe PMU is faulty (not in the power-on

selfcheck state).

ALM RedON

The base station reports at least one of the

following alarms:Mains overvoltage or undervoltage alarmBusbar overvoltage or undervoltage alarmPower module alarmLoad shutdown alarm

OFF No alarm is reported.

NOTE: In 3s to 5s after the PMU is powered on, the ALM and RUN LEDs are simultaneously ON for about 3s.

Ports on the front panel of the PMU



DIP Switch: The DIP switch is positioned on the right panel of the PMU. The DIP switch has eight bits,

which are set to OFF before delivery. The bits of the DIP switch are in binary format. The four least significant bits (1, 2, 3, and 4) of

the DIP switch define the secondary node address of the PMU. The four most significant bits

(5, 6, 7, and 8) are not defined, and they are reserved for future use. You can set the monitoring address by setting the four least significant bits of the DIP switch.

The first bit corresponds to BIT0, and the fourth bit corresponds to BIT3. The monitoring address of the PMU in main cabinet must be set to 3 (1100), and that in the

extension cabinet must be set to 7 (1110).

Right panel of the PMU


Power Subrack (AC/DC) -- PSU (AC/DC)

The power supply unit (PSU) converts the 220 V AC power to the -48 V DC power. Function:

Converting 220 V AC power to -48 V DC power and supplying -48 V DC power to the DCDU. Monitoring alarms related to module faults (such as output overvoltage, no output, and fan

faults), alarms related to module protection (such as overtemperature protection and input

overvoltage/undervoltage protection), and module out-of-position alarm.

LEDs on the PSU (AC/DC) panel:No. LED Color Status Description

1 Power running LED Green

ON steady Normal

OFF steadyThere are faults (such as no AC input, or

overvoltage/undervoltage of AC input) on the mains, or the

PSU has no output.

2 Protection LED YellowOFF steady Normal

ON steady Temperature prealarm or fan prealarm

3 Fault LED Red

OFF steadyNormal, or the PSU has no output because of faults

(such as no AC input, or overvoltage/undervoltage of

AC input) on the mains.

ON steadyThere is no output because of shutdown caused by

output overvoltage or by overtemperature, fan

fault, remote shutdown, or internal problems of the PSU.


Power Subrack (AC/DC) --Wiring Unit (220 V)

The wiring unit of the power subrack (220 V) provides power input wiring

terminal, power output wiring terminal, and wiring terminal for the battery, to

which the input power cable, output power cable, and power cable for the

battery are connected respectively.

No. Name Description

1Power input wiring terminal

The L wire is connected to the L wiring

terminal and the N wire is connected to the N

wiring terminal.

2Power switch of the battery

The power switch of the battery controls the

battery current.

3Power output wiring terminal

The -48 V power cable is connected to the

wiring terminals LOAD1(-) and LOAD2(-).

The -48 V RTN cable is connected to the RTN

(+) wiring terminal.

4Wiring terminal for

supplying the power of

the battery

The -48 V power cable of the battery is

connected to the BAT(-) wiring terminal. The

-48 V RTN cable of the battery is connected to

the BAT(+) wiring terminal.





Sector 4 BTS3900Sector 4 BTS3900 New HardwareNew Hardware



APM30H

1 HPMI2 Inner air circulation fan

3 HEUA

4 Power system (AC/DC)

5 PDU6 Outer air circulation fan

7 Core of the heat exchanger

Components of APM30H:


HEUA

The Heat Exchange Unit Type A (HEUA) monitors the fans and reports the

related alarms.

Port Quantity Function

3V3 power supply socket

1 Leading DC input power to the HEUA

4-pin ports 2Providing the terminals for the input of power or alarm signals of the two outer air circulation fans

LEDs 2Indicating the running status and alarm status of the fans

RJ45 ports 2

Receiving two Boolean inputs COM OUT: providing inputs of PMU

monitoring signals COM IN: providing outputs of the

APM30H alarms


HPMI

The Hert Power Monitoring Interface unit (HPMI) transfers the power monitoring

signals and provides ports for the input and output of various alarm signals.


HPMI

Ports on the HPMI:

Port Functions

TO PMU DB50 Transferring the monitoring signals of the PMU

A:1.2.3.4 Transmitting two Boolean outputs

B:1.2.3.4 Receiving two Boolean inputs

C:1.2.3.41.2: receiving one Boolean input

3.4: detecting the fuse alarm signals

Gate Receiving the door status alarm signals

D:1.2.3.41.2: receiving the AC surge protection alarm signals

3.4: receiving the DC surge protection alarm signals

Bat1 Tmp Receiving the battery temperature monitoring signals

E:1.2.3.4 Receiving two Boolean inputs

Smoke Receiving the smoke alarm signals

Water Receiving the water alarm signals

Tem Humi Receiving the temperature and humidity alarm signals

Bat2 TmpProviding the backup port for the input of the battery temperature monitoring signals






Sector 5 MRFU Working ModeSector 5 MRFU Working Mode


The main limitation of MRFU MRFU supports whole frequency band of PGSM 900MHz, high 45MHz

frequency band and low 45MHz frequency band of DCS1800MHz. High 40MHz

frequency band and low 40MHz frequency band of 1900MHz.

MRFU DL UL

Whole 25MHz frequency band of 900MHz

935-960MHz 890-915MHz

Low 45MHz of 1800MHz 1805-1850MHz 1710-1755MHz

High 45MHz of 1800MHz 1835-1880MHz 1740-1785MHz

Low 40MHz of 1900MHz 1930-1970MHz 1850-1890MHz

High 40MHz of 1900MHz 1950-1990MHz 1870-1910MHz


The main limitation of MRFU

The instantaneous frequency bands supported by MRFU.

Power sharing doesn’t support Concentric cell, Co-BCCH, IBCA, RAN sharing while

static power can support these functions. MRFU supports 2-way RX diversity. 4-way RX diversity and TX diversity are not

supported.

MRFU Type Number of TXfrequency band of TX

Number of RXfrequency band of RX

GSM mode 1 15MHz 2 25MHz

UMTS mode 1 20MHz 2 25MHz

GU dual mode 1 15MHz 2 25MHz


Configuration principle of MRFU

Basic configuration principle: One MRFU supports a maximum cell configuration of S6. A single BTS3900 provides a maximum of 36 carriers with the maximum cell configuration of

S12/12/12. In addition, a site configured with the BTS3900s can support a maximum of 72

carriers with the maximum cell configuration of S24/24/24. One MRFU does not serve two cells. Each cell with a single antenna can be configured with a

maximum of two MRFUs. MRFU supports 1-way TX and 2-way RX. Star, chain, and ring, are supported between the BBU and the MRFUs. When star and chain topology is adopted between the BBU and MRFUs, the MRFU supports

3 levels of cascading in a chain and thus the BBU supports a maximum of 18 (6 x 3) MRFUs.


Configuration principle Base on Limitation of MRFU Assign frequency:

If the frequency interval of a cell is outside the range of 15MHz, 2 MRFUs can be considered

to be used and the range of frequency for each MRFU also should be within15MHz. Generally, it is suggested that the number of carriers should be set to 2 MRFUs averagely if 2

MRFUs are used in a cell. For example: S8 should be configured as 4+4 when 2 MRFUs are

used. S7 should be configured as 3+4 when 2 MRFUs are used. If there’s limitation of

frequency band, S8 also can be configured as 3+5 or 2+6.

Frequency hopping: Cell without frequency hopping. The cell can work normally when the range of frequency is

within 15MHz for each MRFU. Cell with Baseband frequency hopping. The frequency range of 2 MRFUs must within 25MHz

when 2 MRFUs are used. And the range of frequency also must be within 15MHz for each

MRFU. Cell with RF frequency hopping. The cell cannot adopt RF frequency hopping if the range of

frequency is out of 15MHz. Because the frequency range of 2 MRFUs must be within 15MHz

when 2 MRFUs are used.


Configuration principle Base on Limitation of MRFU Output power:

The maximum output power of MRFU is 80W. The output power for each cell must fulfil the requirement of network plan. When the

specification doesn’t fulfil the requirement, it can be improved by adding MRFUs. The output power of all the cell must be the same because power sharing is mutually

exclusive with concentric cell. For example, S7 configured as 3+4 when 2 MRFUs are

used. The output power of MRFU configured as 3 carriers must be the same as that of

MRFU configured as 4 carriers. Specifications of output power is Class 2, please refer to the next page.


Working mode GSM TRX UMTS TRXOutput power of each GSM TRX

(W ） Output power of each UMTS TRX(W)

GSM mode

1 0 80 0

2 0 40 0

3 0 31 0

4 0 27 0

5 0 18 0

6 0 16 0

GSM+UMTS mode

1 1 40 40

1 2 40 20

2 1 20 40

2 2 20 20

3 1 24 10

3 1 20 20

4 1 20 10

4 1 17 20

3 2 20 10

3 2 12 20

4 2 13 10

5 1 15 10

UMTS mode

0 1 0 60

0 2 0 40

0 3 0 27

0 4 0 20

Specifications of output power is Class 2:


Antenna Configuration of MRFU Single Feeder.

Two module interconnection. 1TX and 2RX.

Double Feeder. Single module. 1TX and 2RX.


Transmit Mode and Receive Mode of MRFU

Transmit Mode of MRFU. Non-combination.

Receive Mode of MRFU. 2-way RX diversity.


Typical configuration of MRFU Single MRFU. Double feeder, 1TX + 2RX.

When a dual-polarized antenna is configured, one

TX channel and two RX channels are supported.

The ANT_RXB and ANT_TX/RXA ports receive the

signals from the antenna to achieve RX diversity.


Typical configuration of MRFU Two module interconnection. Single feeder, 1TX + 2RX.

When the cell configuration is from S7 to S12, two

MRFUs need to be configured. The ANT_TX/RXA port on each MRFU supports the

receiving and transmitting of signals. Two MRFUs

provide RX signals for each other through the RF

interconnection ports. Thus, the RX diversity is

implemented.


Summary

Functions of BTS3900 Hardware structure of BTS3900 New hardware of BTS3900 Features and working mode of MRFU


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HUAWEI BTS3900 Hardware Structure and Principle-200903-IsSUE1.0-B

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