dbs3800 system structure(dbs3800v100r008)

8/13/2019 DBS3800 System Structure(DBS3800V100R008)

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HUAWEI TECHNOLOGIES CO., LTD. All rights reserved

www.huawei.com

Internal

DBS3800 System

Hardware Structure

DBS3800V100R008


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

DBS3800 is a distributed NodeB

solution put forward by Huawei

Technologies Co.Ltd.

In this slide, well mainly introduce the

hardware system structure, application

scenarios, basic functions of modules

and networking and configuration of the

DBS3800


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Upon completion of this course, you will

be able to:

Application Scenarios of DBS3800

Hardware Structure of DBS3800

Functions of Different Modules

Networking and Configuration

Examples


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References

DBS3800 System Description

DBS3800 Hardware Description


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Chapter1 General Description

Chapter2 Hardware Introduction

Chapter3 Networking and Configuration


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DBS3800 Overview DBS3800 is a distributed NodeB of Huawei

Technologies Co.Ltd.

DBS3800 system consists of:

BBU3806

RRU3801C

Antenna and feeder system

Power cable

E1/T1 or optical fiberOptical fiber or CPRI high

speed signal cable

Grounding cable+24V/-48V DC

Power cable-48V DC/220V AC

RRU3801C

RNC

Antenna

TMA

RF jumper

Feeder

RF jumperBBU3806


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DBS3800 Deployment

Application scenario 1

Launch 3G services on the basis of a 2G site


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DBS3800 Deployment


Launch a new 3G outdoor site without an

equipment room


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DBS3800 Deployment

Application scenario 3:

Launch a new 3G indoor site, there is an equipment room

but the space is limited and load-bearing capacity is week


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DBS3800 Deployment


Launching a new 3G outdoor site, the operator has no equipment

room or fiber resources, or it is very hard to route optical fibers


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DBS3800 Characteristics

supports circuit domain (CS) and packet (PS) domain services

supports positioning services

supports softer handover, soft handover and hard handover

Supports transmit diversity mode and receive diversity mode

Supports high-speed downlink packet access (HSDPA) technology

HSDPA allows the traffic at up to 14.4 Mbps for a single cell

HDSPA enables a single cell to support 15 OVSF codes

Supports RRU cascading

The maximum distance between two RRUs is 40km

The distance from the first one to the last one should be within 100kmWhen using the 1.25 G optical module, cascading levels is less than 4

When using the 2.5 G optical module, cascading levels is less than 8


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Section1 BBU Hardware

Section2 RRU HardwareSection3 BTS3801C Hardware

Section4 Antenna and Feeder Subsystem


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BBU Overview

BBU3806 appearance BBU3806Cappearance

Index BBU3806 BBU3806C

Dimension 42mm(H)436mm(W)300mm(D) 610mm(H)380mm(W)200mm(D) (with

the housing )

Weight 3kg 15kg

Power

and Power

Consumption

-48V DC 60W 220V AC 120W

+24V DC 60W -48V DC 100W

CE Numbers 128CE(UL)/256CE(DL)(V17) 128CE(UL)/256CE(DL)(V17)

Cells 3 3


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BBU System Structure


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BBU3806 Panel

8K/TT110MRST

EXT_ALM

ETH_RS232E1/T1/J1 Ela Elb

RXTX

CPRI0

RXTX

CPRI1

RXTX

CPRI2

BITS GPS FE1

FE0 PWR/RS485ONOFF

TYPE LOCAT_ID E1/T1/J1

ONOFF

CPRI0 CPRI1 CPRI2 RUNALM ACT

LIU7LIU6LIU5LIU4LIU3LIU2LIU1LIU0

ESD

BBU-RNC interface

BBU-BBU interface

BBU-RRU interface

BBU-RNC interface

Indicator

DIP switch


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CPRICPRI Common Public Radio I nter face


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BBU3806C Panel

RST

10 M

8K/TT1

LIU0

LIU1

LIU2

LIU3

LIU4

LIU5

LIU6

LIU7

RUN

ALM

ACT

CPRI2

CPRI1

CPRI0

ON

OFF

ETH_RS232

E1/T1&

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LOCAT.ID

ON

OFF

1

2

3

4

PWRRS485&

EXT_ALM

2FE

8E1/T1

OPT

GPS

E1/T1 GND

CPRI1

_TX

CPRI1

_RX

CPRI2

_TX

CPRI2

_RX

CPRI0

_TX

CPRI0

_RX

Ela

Maintenance Panel Bottom Panel Distr ibuted Board


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Section4 Antenna and Feeder Subsystem


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RRU System Structure

RNC BBU3806

RRU3801C

Duplexer

Opticalinterfaceor

electr

icalinterface

Highspeedserialinterface

module

Feedback channel

Transmit signalprocessor

Receive signal

processor

ADC

ADC

DAC

MTRX

Rx1

Rx1

Rx2

A&Fsubsystem

Tx1

Rx2LNA

LNA

PA


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RRU3801C Panel

EXT_ALM/

FAN

CPRI_E

CPRI_W

ALD

RUNALM

TX_ACT/VSWR

TST_RSLT

CPRI_E CPRI_W

ETH/RS232

RST

TST_ANT

TST_CPRI

OFF

ON

LOCAT

_ID

12

43

PWR

RX_IN/OUT

ANT_RXB

ANT_TX/RXA

DIP Switchused to indicate the slot Number of RRU3801C, not used yet

Maintenance Panel Bottom Panel Distr ibuted Board


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BTS3801C Hardware Structure

BTS3801C

Dimension 610mm(H)380mm(W)390mm(D)

Weight 35kg

Power and

Power Consumption

20W Power

amplifier

220V AC 310W

40W Power

amplifier

220V AC 340W

Sector Carrier 12


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Networking BBUs and RNC can form multiple networking modes such as star, chain, tree,

ring, and hybrid

For both chain and tree networking modes:

cascading levels is less than 5

The BBUs in the ring topology require additional transmission equipment.


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Networking

BBUs and RRUs can form multiple networking modes such as star, chain, tree,ring, and hybrid

For both chain and tree networking modes:When using the 1.25 G optical module, cascading levels is less than 4

When using the 2.5 G optical module, cascading levels is less than 8


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Typical Configuration11

Applied to wide areas and indoor cir cumstances


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Appl ied to long stretched areas


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Applied to cities or other high capacity areas


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