DBS3800V100R008 Hardware System Structure

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Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.

DBS3800 Hardware System Structure

http://www.huawei.com

Page2Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.

Forewordl DBS3800 is a distributed NodeB solution put forward by

Huawei Technologies Co.Ltd.

l In this slide, we’ll mainly introduce the hardware system

structure, application scenarios, basic functions of modules

and networking and configuration of the DBS3800


Objectivesl Upon completion of this course, you will be able to:

p List the application scenarios of DBS3800

p Detail the hardware structure of DBS3800

p Detail the functions of different modules

p List the networking and configuration examples


Referencesl 《DBS3800 Product Description》

l 《DBS3800 Hardware Description》


Contents1. General Description

2. Hardware Introduction

3. Networking and Configuration


DBS3800 Family Overview

l DBS3800 is a distributed NodeB of Huawei Technologies Co.Ltd.p Baseband Unit (BBU): processes baseband signalsp Remote Radio Unit (RRU): processes RF signals

l DBS3800 Family has three productsp BBU3806: indoor baseband unitp BBU3806C: outdoor baseband unitp RRU3801C: remote radio unit

l DBS3800 Solutionsp Distributed Solution p Integrated mini NodeB: BTS3803C

DBS3800

BBU3806 RRU3801C

BTS3803C

BBU3806C


Application Scenarios for DBS3800l Application scenario 1：

p Launch a new 3G outdoor site room with power backup requirement

APM

+

-48V BBU3806

+

-48V RRU3801C



p launch 3G services on the basis of a 2G site

-48V BBU3806

+

220V RRU3801C



p Launch a new 3G outdoor site room without power backup requirement

AFB

+

-48V BBU3806

+

220V RRU3801C



p Launch a new 3G site for hot

spot, marginal networks, and

blind spots such as tunnels

SPD

+

BTS3803C

BTS3803C

SPD40R

LMT

RNC

Ethernet

power

gnd


DBS3800 Characteristicsl Supports switched circuit domain (CS) and packet (PS) domain

servicesl Supports positioning servicesl Supports softer handover, soft handover and hard handoverl Supports transmit diversity mode and receive diversity model Supports high-speed downlink packet access (HSDPA) technology

p HSDPA allows the traffic at up to 14.4 Mbps for a single cellp HSDPA enables a single cell to support 15 OVSF codes

l Supports RRU cascading p The maximum distance between two RRUs is 40kmp The distance from the first one to the last one should be within 100kmp When using the 1.25 G optical module, cascading levels is up to 4p When using the 2.5 G optical module, cascading levels is up to 8






Contents2. Hardware Introduction

2.1 BBU Hardware

2.2 RRU Hardware

2.3 BTS3801C Hardware

2.4 Antenna and Feeder Subsystem


BBU Overview

BBU3806 appearance BBU3806C appearance

60W 100W

192CE(UL)/256CE(DL)192CE(UL)/256CE(DL)CE Numbers

-48V DC+24V DC

3

-48V DC≤ 5kg42mm(H)×436mm(W)×300mm(D)BBU3806

3Cells

220V ACPowerand Power

Consumption

≤15kgWeight610mm(H)×380mm(W)×200mm(D)DimensionBBU3806CIndex


BBU System Structure


BBU3806 Panel

8K/TT110M RST

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

Indicator


BBU3806 Indicators

Remote alarms related to LOS are reported0.125 s ON, 0.125 s OFFLocal alarms related to LOS are reportedOnThe ports are normal or not in useOff

yellowCPRI0～CPRI2

Remote alarms related to the E1/T1/J1 are reported0.25 s ON, 0.25 s OFF

Local alarms related to the E1/T1/J1 are reportedOnThe link isn’t used or there’s no alarmOff

yellowLIU0～LIU7

The BBU is standby or extendedOffThe BBU is activeOn

greenACT

There’s alarm （exclude VSWR warning）OnThere’s no alarm（exclude VSWR warning）Off

redALM

The BBU3806 has no power input, or it is faultyOff

The BBU3806 is checking the version, or it is faulty

OnThe software is being loaded to the BBU38060.25 s ON, 0.25 s OFF

The BBU3806 is running properly1 s ON, 1 s OFF

greenRUN

MeaningStatusColorName


BBU3806 Panel

8K/TT110M RST

EXT_ALM


RXTX

CPRI0

RXTX

CPRI1

RXTX

CPRI2

BITS GPS FE1

FE0 PWR/RS485ONOFF


ONOFF



ESD

BBU-RNC interface

BBU-BBU interface

BBU-RRU interface

BBU-RNC interface

Clock interface

Clock interface

Maintenance/Alarm interface

Power interface


BBU3806 Ports

Connector for transmitting 8-channel E1/T1/J1 electrical signalsE1/T1/J1

Connector is to interconnect the active / standby BBU3806sEIa

Connector is to interconnect BBU3806s to form a resource poolEIb

1.25 Gbit/s or 2.5 Gbit/s optical sockets connect to the RRUCPRI 0-2

Port for 2 MHz clock signal inputBITS

Port for GPS clock signal inputGPS

Port for 8 kHz /TTI clock signal output8K/TTI

Port for 10 MHz clock signal output10M

Ethernet port for IP trafficFE0/1

FunctionLabel


BBU3806 Panel

8K/TT110M RST

EXT_ALM


RXTX

CPRI0

RXTX

CPRI1

RXTX

CPRI2

BITS GPS FE1

FE0 PWR/RS485ONOFF


ONOFF



ESD


BBU3806 DIP Switches

75ohm E1（default value）ONON

110ohm J1OFFON

100ohm T1ONOFF

120ohm E1OFFOFF

MeaningDIP position8DIP position7

Extended BBU3806 2OFFONON

Extended BBU3806 1OFFONOFF

Standby BBU3806OFFOFFON

Active BBU3806（default value）OFFOFFOFF

MeaningDIP position6DIP position5DIP position4

undefined，default is OFFOFFOFFOFF

MeaningDIP position3DIP position2DIP position1


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&

75/120 LOC

AT.ID

ON

OFF

1 2

3

4PWR

RS485&EXT_ALM

2×FE

8×E1/T1

OPT

GPS

E1/T1 GND

CPR

I1_TXC

PRI1_R

XC

PRI2_TX

CPR

I2_RX

CP

RI0_TX

CPR

I0_RX

Ela

Maintenance PanelMaintenance Panel Bottom PanelBottom Panel Distributed BoardDistributed Board



2.1 BBU Hardware

2.2 RRU Hardware




RRU Overview

200 V to 240 V AC200 V to 240 V AC

210W

-48V DC

≤ 18 kg

565mm(H)×390mm(W)×165mm(D)

20W RRU3801C

-48V DC

Power Supply

240WPower Consumption

≤ 20 kg

610mm(H)×380mm(W)×200mm(D)

40W RRU3801C

Weight

Dimension

20W RRU3801C 40W RRU3801C


RRU System Structure

RNC BBU3806

RRU3801 C

Dup

lex

er

Opt

ical

inte

rface

Hig

h sp

eed

inte

rface

mod

ule

Feedback channel

Transmit signalprocessor

Receive signalprocessor

ADC

ADC

DAC

MTRXRX1

RX1

RX2

A&Fsubsystem

TX1

RX2 LNA

LNA

PA


RRU3801C Panel-40WMaintenance PanelMaintenance Panel Bottom PanelBottom Panel Distributed BoardDistributed Board


RRU3801C Indicators-40W

Power amplifier is turned off，and there’s VSWR alarming before it is turned off

Red flashing slowly at 1Hz

Power amplifier is working， there’s VSWR alarming on ANT_TX/RXA port Red is On

Power amplifier isn’t working，board is runningGreen flashing slowly at 1 Hz

Power amplifier is working，there’s no VSWR alarmGreen is On

Red and

GreenTX_ACT/VSWR

There’s alarm （exclude VSWR warning）On

There’s no alarm（exclude VSWR warning）OffRedALM

There is no power input or the BBU is faultyOffCheckout status of the version or BBU is faultyOnSoftware of the board is loading0.5 s ON, 0.5 s OFF

The RRU is working normally1 s ON, 1 s OFF

GreenRUN



RRU3801C Indicators-40W

Local alarms related to LOS are reportedOn (red)

Local alarms related to LOS are reportedOn (red)


The optical module is not in position or it is powered offOFF

CPRI links between the RRU3801C and the lower level equipment are out of lock or not in the specified state

0.125 s ON, 0.125 s OFF (red)

The CPRI link is operationalOn (green)

Red and GreenCPRI_E

The optical module is not in position or it is powered offOFF

CPRI links between the RRU3801C and the upper level equipment are out of lock or not in the specified state

0.125 s ON, 0.125 s OFF (red)

The CPRI link is operationalOn (green)

Red and GreenCPRI_W

Un-tested statusOff

Being testedGreen flashes slowly at 1Hz

Test result is abnormalRed is onTest result is normalGreen is on

Red and GreenTST_RSLT



2.1 BBU Hardware

2.2 RRU Hardware




BTS3803C Hardware Structure

340W(single)/820W(double)

310W (single)/730W(double)

40W RRU

20W RRUPower and

Power Consumption

≤ 43 (a single cabinet)

≤ 83 (two cabinets)

610mm(H)×380mm(W)×430mm(D)

BTS3803C

Weight

Dimension



2.1 BBU Hardware

2.2 RRU Hardware




Antenna and Feeder System






Networkingl Between BBUs and RNC

p multiple networking : star, chain, tree and ring

p The chain and tree topologies support up to five levels of cascading


Networkingl Between BBU and RRUs

p multiple networking : star, chain and ring p For both chain and tree networking modes:

n When using the 1.25 G optical module, cascading levels can be up to 4n When using the 2.5 G optical module, cascading levels can be up to 8


Typical Configuration—1×1

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


Typical Configuration—2×1Applied to long stretched areas Applied to long stretched areas


Typical Configuration—3×1Applied to cities or other high capacity areasApplied to cities or other high capacity areas

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DBS3800V100R008 Hardware System Structure