DBS3800 Hardware System

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DBS3800 System

Hardware Structure

DBS3800V100R007


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DBS3800 is a distributed NodeB

solution put forward by Huawei

Technologies Co.Ltd.

In this slide, we’ll mainly introduce the

hardware system structure, application

scenarios, basic functions of modules

and networking and configuration of theDBS3800


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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 DescriptionChapter1 General Description

Chapter2 Hardware IntroductionChapter2 Hardware Introduction

Chapter3 Networking and ConfigurationChapter3 Networking and Configuration


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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

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

Application scenario 4

Launching a new 3G outdoor site, the operator has no equipmentroom or fiber resources, or it is very hard to route optical fibers


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DBS3800 Product line

Remote radio unit Mini NodeBBaseband unit

BTS3801CBBU3806 RRU3801CBBU3806C


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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 HardwareSection1 BBU Hardware

Section2Section2 RRU HardwareRRU Hardware

Section3 BTS3801C HardwareSection3 BTS3801C Hardware

Section4 Antenna and Feeder SubsystemSection4 Antenna and Feeder Subsystem


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BBU Overview

BBU3806 appearance BBU3806Cappearance

60W

60W

100W

120W

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

-48V DC+24V DC

3

-48V DC

3kg

42mm(H)436mm(W)300mm(D)

BBU3806

3Cells

220V ACPowerand Power

Consumption

15kgWeight

610mm(H)380mm(W)200mm(D) (with

the housing )

Dimension

BBU3806CIndex


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BBU System Structure


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BBU3806 Panel

8K/TT110MRST

EXT_ALM

ETH_RS232E1/T1/J1Ela Elb

RXTX

CPRI0

RXTX

CPRI1

RXTX

CPRI2

BITS GPS FE1

FE0 PWR/RS485ONOFF

TYPE LOCAT_ID E1/T1/J1

ONOFF

CPRI0 CPRI1 CPRI2 RUN ALM ACT

LIU7LIU6LIU5LIU4LIU3LIU2LIU1LIU0

ESD

BBU-RNC interface

BBU-BBU interface

BBU-RRU interface

BBU-RNC interface

Indicator

DIP switch


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BBU Transmission Interfaces

32.5Gbit/s1EIb

32.5Gbit/s1EIaInterface between

BBUs

1.25 Gbit/s

Or

2.5 Gbit/s

3

CPRI

(optical port or electrical

port)

Interface between

BBU and RRU

100 Mbit/s2Fast Ethernet

155 Mbit/s2STM-1

44.7 Mbit/s2T3

34.4 Mbit/s2E3

1.5 Mbit/s8T1

2 Mbit/s8E1

Iub Interface

RateQuantityTypes of interfaceUsage


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CPRICPRICPRICommon Public Radio InterfaceCommon Public Radio Interface


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BBU3806 Indicators

LOS alarmFlashing

The power of the signal received from the near end is not

enoughOn

The port works normally or is closedOff

green

CPRI0

CPRI2

Far end alarmFlashing

Near end alarmOn

The link isn’t used or there’s no alarmOff

greenLIU0

LIU7

The BBU doesn’t work or it is standby or secondaryOffThe BBU is activeOngreenACT

There’s alarmexclude VSWR warningOn

There’s no alarmexclude VSWR warningOffredALM

There is no power input or the BBU is faultyOff

Checkout status of the version or BBU is faultyOn

The BBU is loadingFlashing fast at 1Hz

The BBU is working normallyFlashing slowly at 0.5 Hz

greenRUN

MeaningStatusColorName


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BBU3806 DIP Switches

75ohm E1default valueONON

reservedOFFON

100ohm T1ONOFF

120ohm E1OFFOFF

MeaningDIP position8DIP position7

Tertiary BBU3806OFFONONSecondary BBU3806OFFONOFF

Standby BBU3806OFFOFFON

Active BBU3806default valueOFFOFFOFF

MeaningDIP position6DIP position5DIP position4

undefineddefault is OFFOFFOFFOFF

MeaningDIP position3DIP position2DIP position1


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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

OF F

ETH_RS232

E 1 / T 1 & 7

5 / 1 2 0

L O C A T .I D

ON

OF F

1

2

3

4

PWRRS485&

EXT_ALM

2FE

8E1/T1

OPT

GPS

E1/T1 GND

C P R I 1 _T X

C P R I 1 _R X

C P R I 2 _T X

C P R I 2 _R X

C P R I 0 _T X

C P R I 0 _R X

Ela

Maintenance Panel Maintenance Panel Bottom Panel Bottom Panel Distributed Board Distributed Board


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RRU Overview

Allowed voltage range-40V

DC-60V DC

Allowed voltage rangeAC150V

AC300V AC/47Hz63Hz

-48V DC

220V AC

Power

240W

210W

40WPower

amplifier

20WPower

amplifierPower

Consumption

12

20WPower amplifier:18KG

40WPower amplifier:20KG

20W565mm(H)390mm(W)165mm(D)

40W610mm(H)380mm(W)200mm(D)

RRU3801C

Sector Carrier

Weight

Dimensionwith

the housing


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RRU System Structure

O p t i c a l i n t e r f a c e

o r

e l e c t r i c a l i n t e r f a c e

H i g h s p e e d s

e r i a l i n t e r f a c e

m o d u l e

Feedback channel

Transmit signalprocessor

Receive signal

processor

MTRX

Rx1

Rx1

Rx2

A&F

subsystem

Tx1

Rx2LNA

LNA

PA


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RRU3801C Panel

EXT_ALM/ FAN

CPRI_E

CPRI_W

ALD

RUNALMTX_ACT/ VSWR

TST_RSLT

CPRI_E CPRI_W

ETH/RS232

RST

TST_ANT

TST_CPRI

OFFON

LOCAT

_ID

12

43

PWR

RX_IN/OUT

ANT_RXB

ANT_TX/RXA

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

Maintenance Panel Maintenance Panel Bottom Panel Bottom Panel Distributed Board Distributed Board


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RRU3801C Indicators

Power amplifier is turned offand there’s VSWR

alarming before it is turned off

Red flashing slowly at

1Hz

Power amplifier is working there’s VSWR alarming onANT_TX/RXA port

Red is On

Power amplifier isn’t workingboard is runningGreen flashing slowly

at 0.5Hz

Power amplifier is workingthere’s no VSWR alarmGreen is On

Red and

Green

TX_A

CT/VS

WR

There’s alarmexclude VSWR warningOn

There’s no alarmexclude VSWR warningOff

RedALM

There is no power input or the BBU is faultyOff

Checkout status of the version or BBU is faultyOn

Software of the board is loadingFlashing fast at1Hz

The RRU is working normallyFlashing slowly at

0.5Hz

GreenRUN

MeaningStatusColorName


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RRU3801C IndicatorsMeaningStatusColorName

The signal transmitted from west port lossFlashing slowly at

0.5Hz

The power of the receiving signal on east port is too

weakOn

East port works normally or isn’t usedOff

GreenCPRI_E

The signal transmitted from west port lossFlashing slowly at

0.5Hz

The power of the receiving signal on west port is tooweak

On

West port works normally or isn’t usedOff

GreenCPRI_W

Un-tested statusOff

Being testedGreen flashes

slowly at 0.5Hz

Test result is abnormalRed is on

Test result is normalGreen is on

Red andGreen

TST_RSLT


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BTS3801C Hardware Structure

340W

310W

220V AC

220V AC

40W Power

amplifier

20W Power

amplifier

Power and

Power Consumption

12

35kg

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

BTS3801C

Sector Carrier

Weight

Dimension


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Antenna and Feeder System


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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 4When using the 2.5 G optical module, cascading levels is less than 8


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Typical Configuration—11

Applied to wide areas and indoor circumstances Applied to wide areas and indoor circumstances


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Applied to long stretched areas Applied to long stretched areas


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Applied to cities or other high capacity areas Applied to cities or other high capacity areas


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Thank You

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DBS3800 Hardware System