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DBS3800 System Hardware StructureDBS3800V100R007www.huawei.com

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DBS3800 is a distributed NodeB

solution put forward by Huawei Technologies Co.Ltd.In this slide, well mainly introduce the

hardware system structure, applicationscenarios, 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 IntroductionChapter3 Networking and Configuration

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DBS3800 Overview DBS3800 is a distributed NodeB of Huawei

Technologies Co.Ltd. DBS3800 system consists of:Antenna TMA RF jumper

BBU3806

RRU3801C

RRU3801C Antenna and feeder systemRNC-48V DC/220V AC Feeder

Power cable

BBU3806Grounding cable

RF jumper

+24V/-48V DC

Power cable

E1/T1 or optical fiber

Optical fiber or CPRI high speed signal cable

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DBS3800 InstallationTraditional outdoor macro NodeB

Outdoor macro NodeB

Difficult to transport and move Need large space to locate Require long feederDBS3800 Distributed NodeBRRU

small dimensioning design RRU can be installed near antenna The numbers of BBU and RRU can be configured according to different requirementsHUAWEI TECHNOLOGIES CO., LTD. All rights reserved Page 7BBU

DBS3800 Deployment Application scenario 1

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

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DBS3800 Deployment Application scenario 2

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 Application scenario 4

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 Product lineBaseband unit Remote radio unit Mini NodeB

BBU3806

BBU3806C

RRU3801C

BTS3801C

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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 100km 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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Chapter1 General Description

Chapter2 Hardware IntroductionChapter3 Networking and Configuration

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Chapter2 Hardware Introduction Section1 Section2 Section3 Section4 BBU Hardware RRU Hardware BTS3801C Hardware Antenna and Feeder Subsystem

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BBU Overview

BBU3806 appearanceIndex Dimension BBU3806

BBU3806CappearanceBBU3806C

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

the housing )Weight Power and Power Consumption CE Numbers 3kg -48V DC +24V DC 60W 60W 15kg 220V AC -48V DC 120W 100W

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

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

Cells

3

3All rights reserved Page 16

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BBU System Structure

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BBU3806 PanelBITS GPS FE1 CPRI0 CPRI1 CPRI2 RUN ALM ACT EXT_ALM

TX RX TX RX TX RX ESD E1/T1/J1 Ela Elb CPRI0 CPRI1 CPRI2FE0

LIU0 LIU1 LIU2 LIU3 LIU4 LIU5 LIU6 LIU7

ON OFF OFF ON 8K/TT110M RST TYPE LOCAT_ID E1/T1/J1 ETH_RS232 PWR/RS485

BBU-RNC interface BBU-BBU interface DIP switch

BBU-RRU interface

Indicator

BBU-RNC interface

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BBU Transmission InterfacesUsage Types of interface E1 Quantity 8 Rate 2 Mbit/s

T1Iub Interface E3 T3 STM-1 Fast Ethernet Interface between BBU and RRU CPRI (optical port or electrical port) EIa EIb

82 2 2 2

1.5 Mbit/s34.4 Mbit/s 44.7 Mbit/s 155 Mbit/s 100 Mbit/s 1.25 Gbit/s

3

Or 2.5 Gbit/s

Interface between BBUs

1 1

32.5Gbit/s 32.5Gbit/s

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CPRICPRI Common Public Radio Interface

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BBU3806 IndicatorsName Color Status Flashing slowly at 0.5 Hz RUN green Flashing fast at 1Hz On Off ALM ACT LIU0 LIU7 red green Off On Meaning The BBU is working normally The BBU is loading Checkout status of the version or BBU is faulty There is no power input or the BBU is faulty Theres no alarmexclude VSWR warning Theres alarm exclude VSWR warning

OnOff Off On Flashing Off

The BBU is activeThe BBU doesnt work or it is standby or secondary The link isnt used or theres no alarm Near end alarm Far end alarm The port works normally or is closed The power of the signal received from the near end is not enough LOS alarm Page 21

green

CPRI0 CPRI2

green

OnFlashing

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BBU3806 DIP SwitchesDIP position1 OFF DIP position2 OFF DIP position3 OFF Meaning undefineddefault is OFF

DIP position4

DIP position5

DIP position6

Meaning

OFFON OFF ON DIP position7 OFF

OFFOFF ON ON

OFFOFF OFF OFF DIP position8

Active BBU3806default valueStandby BBU3806 Secondary BBU3806 Tertiary BBU3806 Meaning 120ohm E1

OFF

OFFON ON

ONOFF ON

100ohm T1reserved 75ohm E1default value

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BBU3806C PanelMaintenance PanelRST

Bottom Panel

Distributed Board

RS485& EXT_ALMRUN LIU0 10 M

PWR

CPRI2_TX CPRI2_RX

ALM LIU1 8K/TT1CPRI1_TX CPRI1_RX

E1/T1&75/120 LOCAT.ID

ACT LIU2 LIU3 LIU4 CPRI2 LIU5 CPRI1 LIU6 CPRI0 LIU7

1 2 3 4

ETH_RS232

OFF

ON

2FE

CPRI0_TX CPRI0_RX

OPT E1/T1 GND

Ela

8 E1/T1 GPSOFF ON

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Chapter2 Hardware Introduction Section1 Section2 Section3 Section4 BBU Hardware RRU Hardware BTS3801C Hardware Antenna and Feeder Subsystem

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RRU OverviewRRU3801C Dimension with the housing Weight 20W565mm(H)390mm(W)165mm(D) 40W610mm(H)380mm(W)200mm(D) 20WPower amplifier:18KG 40WPower amplifier:20KG 220V AC Power -48V DC Allowed voltage range AC150V AC300V AC/47Hz63Hz Allowed voltage range -40V DC-60V DC 210W

Power Consumption

20WPower amplifier 40WPower amplifier 12

240W

Sector Carrier

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RRU System Structure

Optical interface or electrical interface

RRU3801CHigh speed serial interface module

Feedback channel

RNC

BBU3806

MTRX Receive signal processorADC ADC

Rx1 Rx2

LNA LNA

Duplexer

Transmit signal processor

DAC

PA

Tx1 Rx1

Rx2 A&F subsystem

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RRU3801C PanelMaintenance PanelTST_ANT TST_CPRI ALM TX_ACT/ VSWR CPRI_E RUN TST_RSLT CPRI_W ETH/RS232 OFF ONANT_TX/RXA1 2 3 4

Bottom PanelPWR

Distributed Board

EXT_ALM/ ALD FANRX_IN/OUT

CPRI_E

LOCAT _IDANT_RXB

CPRI_W

RST

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

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RRU3801C IndicatorsName Color Status Flashing slowly at 0.5Hz RUN Green Flashing fast at1Hz On Off Off ALM Red Meaning The RRU is working normally Software of the board is loading Checkout status of the version or BBU is faulty There is no power input or the BBU is faulty Theres no alarmexclude VSWR warning

OnGreen is On Green flashing slowly at 0.5Hz Red and Green Red is On Red flashing slowly at 1Hz HUAWEI TECHNOLOGIES CO., LTD.

Theres alarm exclude VSWR warningPower amplifier is workingtheres no VSWR alarm Power amplifier isnt workingboard is running Power amplifier is working theres VSWR alarming on ANT_TX/RXA port Power amplifier is turned offand theres VSWR alarming before it is turned off Page 28 All rights reserved

TX_A CT/VS WR

RRU3801C IndicatorsName Color Status Green is on Red is on TST_RSLT Red and Green Green flashes slowly at 0.5Hz Off Off CPRI_W Green On Flashing slowly at 0.5Hz Off CPRI_E Green On Test result is normal Test result is abnormal Being tested Un-tested status West port works normally or isnt used Meaning

The power of the receiving signal on west port is too weakThe signal transmitted from west port loss East port works normally or isnt used The power of the receiving signal on east port is too weak

Flashing slowly at The signal transmitted from west port loss 0.5Hz Page 29 HUAWEI TECHNOLOGIES CO., LTD. All rights reserved

Chapter2 Hardware Introduction Section1 Section2 Section3 Section4 BBU Hardware RRU Hardware BTS3801C Hardware Antenna and Feeder Subsystem

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BTS3801C Hardware Structure

BTS3801C Dimension Weight Power and Power Consumption 20W Power amplifier 40W Power amplifier Sector Carrier 610mm(H)380mm(W)390mm(D) 35kg 220V AC 220V AC 12 310W 340W

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Chapter2 Hardware Introduction Section1 Section2 Section3 Section4 BBU Hardware RRU Hardware BTS3801C Hardware Antenna and Feeder Subsystem

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Antenna and Feeder System

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Chapter1 General Description

Chapter2 Hardware IntroductionChapter3 Networking and Configuration

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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 Configuration11Applied to wide areas and indoor circumstances

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Typical Configuration21Applied to long stretched areas

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Typical Configuration31Applied to cities or other high capacity areas

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