WCDMA BTS3900 Hardware Structure(PDF)

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WCDMA BTS3900

Hardware Structure

BTS3900V200R011

WRAN Training Team


As an important part of UTRAN,

NodeB mainly processes the signals of

physical layer of Uu interface

BTS3900 is a new generation indoor

marco NodeB which is produced by

Huawei Co. Ltd.


Chapter 1 NodeB Overview

Chapter 2 BTS3900 Hardware Structure

Chapter 3 BTS3900 Typical Configuration


Abbreviations

WMPT WCDMA Main Processing and Transmission Unit

WBBPa WCDMA Baseband Process unit Type A

WRFU WCDMA Radio Filter Unit

UBFA Universal BBU Fan Unit Type A

UEIU Universal Environment Interface unit

UELP Universal E1/T1 Lighting Protection unit

UFLP Universal FE/GE Lighting Protection unit

UPEU Universal Power and Environment Interface Unit

UAEU Universal ATM over E1/T1 Interface and Processing Unit

UIEU Universal IP Packet over E1/T1 Interface and Processing Unit

UTRP Universal Transmission Processing Unit

DCDU-01 Direct Current Distribution Unit-01

CPRI Common Protocol Radio Interface

PSU The power supply unit

PMU The power and environment monitoring unit

APM Advanced Power Module


NodeB Position in UMTS Network

Iu-BC

RNC

RNC

NodeB

NodeB

NodeB

CS

PS

CBC

UE UTRAN CN

Uu Iu

Iu-CS

Iu-PS

Iu-BC

Iur

Iub

Iub


NodeB System Architecture

Environment

Monitoring

device

Iub

Uu

UE

RNC

BTS3900 cabinet

O&M terminal

BTS3900 System

power supply

system

Antenna & feeder

subsystem

Transmission

deviceDDF



Section 1 BTS3900 Introduction

Section 2 BBU Modules Structure

Section 3 RF Modules Structure

Section 4 Power Modules Structure

Section 5 BTS3900 Cables


BTS3900 Appearance

Type Parameters

Dimensions 600(W)*900(H)*450(D)

Empty cabinet ≤ 70kg

Weight under full

configuration

≤ 160Kg

3*1 and 3*2 Weight ≤ 120Kg

- 48V : Input range of voltage

-38.4V DC to -57V DC

+24V: Input range of voltage

+21.6 V DC to +29 V DC

200 V AC to 240 V AC 200 V AC to 240 V AC 176 V AC to

290 V AC, single-phase

200 V AC/346 V AC to 240 V AC/415V AC

176 V AC/304 V AC to 290 V AC/500 V AC, three-phase

Working Temperature -20℃～+50℃


BTS3900 Single Cabinet Full Configuration Structure

- 48VDC

Single Cabinet

1U

9U

2U

1U

1U

19U

2U

2U

1U


BTS3900 Stacked Cabinets Full Configuration Structure

3U


BTS3900 Capacity and Characteristics

System capacity specifications:

BTS3900 can support up to: 3*8 cells or 6*4 cells

Characteristics

Transmission Type: E1/T1, FE (electrical port ), FE (optical port ),

Networking mode: star, chain, tree and hybrid

Synchronization clock sources: Iub interface clock, GPS, and internal clock

Handover types: softer handover, soft handover and hard handover

Services: CS services, PS services , mixed services and position services

Enhanced functions：RET , HSDPA , HSUPA phase II


BTS3900 Logical Structure

RF Module

DCDU

WRFU

RNC

Antenna

Iub

WRFU

BBU

Power

Module

Baseband Transmission

Control module

-48V

Signal Current


BBU3900 Module Introduction

Mandatory boards and modules：WMPT, WBBP, UBFA, and UPEU

The optional boards are the UELP, UFLP, UTRP, and UEIU.

Full configuration

Typical configuration


BBU Module --- WMPT Board

Board number：

maximum is 2 for one BBU

mandatory board

working in active and standby

4E1:DB26

IP transmission on

Electrical Port :RJ45

IP transmission

Optical signals: SFP

GPS antenna: SMA

Commissioning:RJ45

Loading Testing:USB

LEDs

Main Functions：

Providing OM functions

Controlling other boards in the system and

providing the reference clock

Providing USB ports for automatic NodeB

upgraded

Providing transmission port for Iub interface

Providing OM channels



LEDs of running status of WMPT:

Label Color Status Description

RUN Green ON The board has power input, yet the board is faulty.

OFF The board has no power input.

1s ON, 1s OFF The board is running as configured.

0.125s ON, 0.125s OFF The software is being loaded to the board, or the

board is not in use.

ALM Red ON The board is reporting hardware alarms.

OFF The board is running properly.

ACT Green ON The board is in active mode.

OFF The board is in standby mode.



LED Color Status Description

LEDs beside the

FE1 and FE0 optical

port

Green ON The connections are functional.

OFF The connections are faulty.

Yellow Blinking There is ongoing data transmission.

OFF There is no data transmission.

LEDs beside the

ETH port

Green ON The connections are functional.

OFF The connections are faulty.

Yellow Blinking There is ongoing data transmission.

OFF There is no data transmission.


BBU Module --- WBBPa Board

Main Functions：

Providing the CPRI interface for communication between the BBU and the

WRRU or WRFU

Processing uplink and downlink baseband signals and support HSUPA and

HSDPA + function


BBU Module --- WBBPa Board

LED of running status of board :


RUN Green ON The board has power input, yet the board is faulty.

OFF The board has no power input or is faulty.

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

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

ACT Green ON The board is running properly.

OFF The board is not in use.

ALM Red OFF The board is running properly.

ON The board has alarms on hardware and it should be replaced with a new one.

CPRI0

CPRI1

CPRI2

Red

Green

OFF normal

ON The CPRI links over the optical cable are faulty.

Blinking at 2 Hz The RRU on the CPRI link is faulty in hardware.

Blinking at 0.5 Hz The RRU on the CPRI link is faulty in the antenna system connection.



STATE Green 0.125s ON,

0.125s OFF

The module is not registered, and no

alarm is reported.

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

Red ON The module is reporting alarms.

BBU Module --- UBFA Board

Board number： mandatory board, maximum is 1

Main Functions：

Controlling the fan speed

Reporting the fan status to the WMPT

Detecting the temperature of the fan board


Panel of the UPEA

BBU Module --- UPEU Board

Board number： mandatory, maximum is 2, 1+1 backup

Main Functions：

Converting -48 V DC power input to +12 V DC power that is supported

by boards

Reporting alarms related to input and output under voltage

Providing transmission ports for RS485 signals and 8 dry contact alarm signals

-48V to +12V


LED: The UPEU has one LED, indicating the running status of the board.


RUN Green ON The board is running properly.

OFF The board has no power input, or

the board is faulty.

Socket and Port: The UPEU has one socket and four ports.

Label Quantity Connector Type Function

PWR 1 3V3 DC power input

EXT-ALM1 1 RJ45 Transmitting dry contact alarm signals

EXT-ALM0 1 RJ45

MON1 1 RJ45 Transmitting RS485 environment

monitoring signalsMON0 1 RJ45

BBU Module --- UPEU Board


RF Module --- WRFU Board

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

power amplifier, and duplex unit



Type Label Connector Type Description

Port for

transceiving RF

signals

ANT-RXB DID connector Connecting the antenna

subsystem

ANT-TX/RXA DID connector

CPRI CPRI0 SFP female

connector

Connecting the BBU, or

the upper-level WRFU

during the cascading

CPRI1 SFP female

connector

Connecting the lower-

level WRFU during the

cascading

Interconnection port

for RF receive

signals

RX-INB QMA female

connector

Input port of diversity

signals in the antenna

channel

RX-OUTA QMA female

connector

Output port of diversity

signals in the antenna

channel

Power port PWR 3V3 power

connector

Introducing power

Commissioning port MON RJ45 connector Used for commissioning


Identifier Status Meaning

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

Off There is no power input, or the module is faulty.

On for 1 second and off for 1 second The module is functional.

On for 0.125 second and off for 0.125

second

The module is loading software or is not started.

ALM On The module is in the alarm status.

Off No alarm is generated.

ACT On The module is functional and is connected to the BBU.

Off The module is not connected to the BBU.

On for 1 second and off for 1 second The module is in the local test status.

VSWR Off (red) No VSWR alarm is generated.

On (red) A VSWR alarm is generated.

CPRI0

CPRI1

On (green) The CPRI link is normal.

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

Red LED on for 1 second and off for

1 second

The CPRI link is out of lock.




RF specifications:

One WRFU supports four carriers

Each carrier’s maximum output power of WRFU is 80W

The receive sensitivity of single antenna is better than -125.8dBm

The receive sensitivity of two antennas is better than -128.6dBm

The maximum searching ability is 200km

The maximum access search radius is configurable with the step size of 300 m

Configuration Type (No

Transmit Diversity)

Transmit Diversity

Power (W)/Carrier

Typical Power

Consumption (W)

Maximum Power

Consumption (W)

3*1 20 520 630

3*2 20 610 830

3*3 20 810 1070

3*4 20 1020 1330


Power Distribution Modes of the BTS3900

- 48 V DC Distribution


- 48V Cabinet Power Module --- DCDU-01 Board

Function

The DCDU-01 supports one -48 V

DC power input and ten -48 V DC

power outputs

The DCDU-01 supplies power to

the BBU, WRFU, FAN, and user

devices inside cabinets

The DCDU-01 has the built-in

surge protector, which supports

the surge protection capability of

the differential mode of 10 kA and

the common mode of 15 kA

- 48V DC

Single Cabinet


- 48V Cabinet Power Module --- DCDU-01 Board

Name Label Description

Power input

wiring terminal

NEG(-) -48 V NEG input wiring terminal

RTN(+) -48 V RTN input wiring terminal

Power output port SPARE2, SPARE1,

BBU, FAN, and RFU5-

RFU0

RFU0 to RFU5 supplying power to six WRFUs

BBU supplying power to the BBU

FAN supplying power to the FAN

SPARE1 and SPARE2 reserved

Power switch SPARE2, SPARE1,

BBU, FAN, and RFU5-

RFU0

RFU0 to RFU5 controlling the ON/OFF of the current of

six WRFUs

BBU controlling the ON/OFF of the current of the BBU

FAN controlling the ON/OFF of the current of the FAN

SPARE1 and SPARE2 controlling the ON/OF of the

current on the SPARE1 and SPARE2 power output ports

Alarm output port SPD ALM DUDU-01 dry contact alarm output port


FAN Unit

The FAN unit refers to the fan box. The FAN unit provides the functions of ventilation

and heat dissipation for cabinets. One FAN unit has four independent fans.

Type Label Connector Type Description

Power port -48 V 3V3 power connector Introducing the -48 V

DC power

Temperature sensor port SENSOR RJ45 connector Connecting the

external temperature

sensor

Communication port COM OUT RJ45 connector Cascading the lower-

level FAN module

COM IN RJ45 connector Connecting the main

control unit


BBU3900 Cable Connection


Cables --- PGND Cable

PGND Cable

OT terminal

Name Color Cross-Sectional Area

PGND cable of the

BTS3900 WCDMA cabinet

Green and yellow The cross-sectional area of a wire is 25

mm2.

PGND cable of the DCDU Green and yellow The cross-sectional area of a wire is 6

mm2.

PGND cable for the SLPU Green and yellow The cross-sectional area of a wire is 6

mm2.

Front door PGND cable Green and yellow The cross-sectional area of a wire is 6

mm2.


Cables --- Power Cable

Power Cable Between the DCDU,BBU,FAN and WRFU


Cables --- Transmission Cable

E1 Cable

FE Surge Protection Transfer CableE1 Surge Protection Transfer Cable

FE Cable


Cables --- CPRI Cable

This describes the CPRI electrical cable. It helps to implement high speed

communication between the BBU3900 and the WRFU.

Appearance : The CPRI electrical cable is an SFP high speed transmission

cable that has a SFP200 male connector at each end.

One End The Other End

CPRI port on the WBBP CPR10 port on the WRFU


Configuration Types of the BTS3900

The BTS3900 supports omni-directional, 2-sector, 3-sector, and 6-sector

configurations. It also supports smooth capacity expansion from 1x1 to 3x8.

This part illustrates the configuration type of the BTS3900 by taking the WBBPa

supporting three cells and the WRFU supporting the 80W/4 carrier as an example.

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WCDMA BTS3900 Hardware Structure(PDF)

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