WCDMA DBS3900 Introduction

5/24/2018 WCDMA DBS3900 Introduction

1/33

HUAWEI TECHNOLOGIES CO., LTD. All rights reserved

www.huawei.com

Internal

WCDMA DBS3900 System

Introduction

DBS3900V200R010


2/33HUAWEI TECHNOLOGIES CO., LTD. All rights reserved Page 2

DBS3900 is new generation distribution

NodeB which is produced by Huawei Co.

Ltd.

In this course, well mainly learn the

hardware system structure, application

scenarios, basic functions of modules and

networking and configuration of the DBS3900



Chapter1 General Description

Chapter2 Hardware Introduction

Chapter3 Networking and Configuration



DBS3900 Overview

DBS3900 is a distributed NodeB of forth generation NodeB.

DBS3900 system consists of:

BBU3900(baseband processing unit )

RRU3908 (outdoor remote radio unit)

Antenna and feeder system

RNC/BSC

-48V DC

power Power cable

Power cable

Trunk cable Fiber or CPRI high-speedsignal cable

RRU3908

BBU3900

Grounding cable

-48V/ 24VDC power Grounding cable

Antenna

TMA

RF jumper

Feeder

RF jumper



DBS3900 Overview

The BBU3900 can be configured with the following boards:

GSM Timing and Main control Unit (GTMU)

WCDMA Main Processing Transmission unit (WMPT)

WCDMA Baseband Processing unit (WBBP)

Universal Transmission Processing unit (UTRP)

FAN unit (UFAN)



Slots of the BBU3900



Typical board configuration of the BBU3900 in

GSM+UMTS dual mode



DBS3900 Capacity and Characteristics

In GSM mode, a RRU3908 supports a maximum of six GSM carriers.

In GSM+UMTS dual mode, a RRU3908 supports a maximum of four

GSM carriers and two UMTS carriers or 5 GSM carriers and 1 UMTS

carrier. Capacity of the RRU3908 can be expanded through

cascading of two RRU3908s. In UMTS mode, a RRU3908 supports a maximum of four UMTS

carriers.

Supporting the GSM, UMTS, LTE and any two mixed modes

through different software configuration. The distributed base

station DBS3900 and cabinet macro base station share the

BBU3900 and RF modules (RRU3908)


10/33

HUAWEI TECHNOLOGIES CO., LTD. All rights reserved Page 10


Section1 BBU Hardware

Section2 RRU HardwareSection3 DBS3900 Cables


11/33


Logical Structure of the BBU3900

TO RRU

Clock modeSignaling

ProcessingOperation&

MaintenancePower mode

E1/T1

FE

Transport

Interface

Transmission

Adaptation

Protocol

Processing

FPProcessing

Codling

Decoding Demodulation

Modulation

Interfac

e

Module

Transport Subsystem Baseband Subsystem

Control Subsystem

External SubsystemOMC

CPRI

RNC

Power

Control

information

Control flowData flow


12/33


BBU Module --- WMPT Board

4E1:DB26

IP transmission on

Electrical Port :RJ45

IP transmissionOptical 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


13/33


BBU Module --- WMPT Board

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.


14/33


BBU Module --- WBBPa Board

Main Functions

Providing the CPRI interface for communication between the BBU and the

MRRU

Processing uplink and downlink baseband signals and support HSUPA andHSDPA function

According to the board chip processing capability, WBBP module include seven

specifications. Current WBBP is the A version, called WBBPa.

CPRI 0 ~2 (1.25G-2.5G): SFP LEDs


15/33


BBU Module --- WBBPa Board

LED of running status of board :

Label Color Status Description

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.

CPRI0CPRI1

CPRI2

RedGreen

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.


16/33


BBU Module --- GTMU Board

CPRI 0 ~5 (1.25G-2.5G): SFP

LEDs

IP transmissionOptical

signals: SFP

4E1:DB26Commissioning:

RJ45

IP transmission on

Electrical Port :RJ45


17/33



Port Type Cable Description

CPRI0

CPRI5

DLC

connector

CPRI optical cable

between the BBU

and the RRU

Provides the input and output of the optical signals

ETH RJ45

connector

Crossover cable

(delivered with the

equipment)

Performs local maintenance and commissioning

FE0 RJ45connector

- A reserved port that performs the following function:

Connects the BBU to a routing device in the equipment room

through the Ethernet cable to transmit network information

FE1 DLC

connector


Connects the BBU to a routing device in the equipment room

through the optical cable to transmit network information

USB USB

connector


Automatically upgrades the software through the USB disk

TST USB

connector

- Tests the output clock signals with a tester

E1/T1 DB26 male

connector

E1/T1 cable of the

BBU

Provides the input and output of the four E1/T1 signals

between the GTMU and the UELP or between the GTMU and

the BSC


18/33



The GSM transmission, timing, and management unit for BBU (GTMU) controls and

manages the entire BTS. It provides interfaces related to the reference clock, power

supply, OM, and external alarm collection.

The GTMU performs the following functions:

Controls, maintains, and operates the BTS

Supports fault management, configuration management, performance

management, and security management

Monitors the fan module and the power supply module

Distributes and manages BTS clock signals

Provides clock input for testing

Provides the Ethernet port for terminal maintenance

Supports four E1 inputs

Provides the CPRI ports for communication with the RRU


19/33



STATE Green 0.125s ON,0.125s OFF

The module is not registered, and noalarm is reported.


Red ON The module is reporting alarms.

Board numbermandatory, maximum is 1

Main Functions

Controlling the fan speed

Reporting the fan status to the WMPT

Detecting the temperature of the fan board

BBU Module --- UBFA Board


20/33


The UTRP provides ports for eight E1s/T1s and implements transport such as IP and

ATM between the BBU3900 and the RNC.


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

OFF The board has no power input or is faulty.


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

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

ACT Green ON The board is in active mode.

OFF The board is in standby mode.

ALM Red OFF The board is running properly.

ON The board is reporting alarms and is faulty.

BBU Module --- UTRP Board

4 E1:DB26


21/33


BBU Module --- UTRP Board Type WCDMA UTRP extend transmission board

UTRP board should add sub board to provide the different interface type

WD22UTRP is the main board name. The UTRP has three sub-boards in current

version

UAEU: Eight ATM over E1s/T1s

UIEU: Eight IP over E1s/T1s

UUAS: One unchannelized ATM over SDH/SONET(STM-1/OC-3) interface

The board in gray table is not be delivered currentlyTransmissionBoard name

Sub board

name

Interface type Interface specification

WD22UEEU WD22UEEC FE/GE electrical board 2*FE/GE (10/100/1000M adaptive)

WD22UEOU WD22UEOC FE/GE optical board 2*FE/GE (10/100/1000M configured)

WD22UAEU WD22UAEC E1/T1 ATM interface sub board 8* E1/T1

WD22UIEU D22UPEC E1/T1 IP interface sub board 8*E1/T1

WD22UCPU WD22UCPS Channelization IP optical sub board 1*STM-1

WD22UUPU WD22UUPS Unchanneliazation IP optical sub board 1*STM-1

WD22UCAU WD22UCAS Channelization ATM optical sub board 1*STM-1

WD22UUAU WD22UUAS Unchanneliazation ATM optical sub board 1*STM-1


22/33


Appearance and Specification of RRU3908

Item RRU3908

Dimensionwith

the housing

RRU3908485mm (H) x 380mm (W) x170mm(D)

Weight RRU3908 module :23KG

Power input -48V DC Allo wed vol tage range -36

V DC to -57 V DC

Bandwidth 12.5M+12.5M 25MHZ con tinu ous band

Appearance of the

RRU3908

NOTES:

Tx and Rx branch: Tx branch 2,Rx branch 2


23/33


Panel and Port of RRU3908

Interconn ection port

between com bined

cabinets

Port for RET

antenna

Main TX/RX diversity

port

Port fo r TX/RX

diversity

CPRI Optical ports

Indicators

Power supply

ports

Grounding bol t

A larm

port

Panel of the RRU3908

Ports of th e RRU3908


24/33


Connections of the BBU3900 Cables

RNC

CPRI optical cable CPRI optical cable

BSC

MRRU


25/33






26/33


Transmission Network

B

a

c

K

B

o

a

r

d

TOP

TDM

HW0 HW16

HW1 HW17

HW15 HW31

PEB22554

CPRIFPGA

TOP

TDM

HW16 HW0

HW17 HW1

HW31 HW15

PEB22554

7340

GMPTWMPT


27/33



Typical transmission network

WMPT

GMPT network

E1T1Back board

TOP


28/33




WMPT

GMPT network

E1T1Back board

TOP


29/33




GMPT

WMPT

network

0 E1

Back

board

E1

1E1

GBSC

0 E11E1

2/3 E1


30/33




GMPT

WMPT+UTRP

network

Backboard

E1

E1

FE


31/33




GMPT

WMPT

Network

E1

Backboard

E1

E1

Next level site


32/33


Typical application scenarios -G444+U111

GTMU

WBBP WMPT

F

A

N

PWR

PWR

RRU3908 RRU3908 RRU3908


33/33

www.huawei.com

Thank You

WCDMA DBS3900 Introduction

Documents