WCDMA DBS3900 Hardware Structure Issue1 0

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Transcript of WCDMA DBS3900 Hardware Structure Issue1 0

Page 1: WCDMA DBS3900 Hardware Structure Issue1 0

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Internal

WCDMA DBS3900 SystemHardware Structure

DBS3900V200R010

WRAN Training Team

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DBS3900 is new generation distribution

NodeB which is produced by Huawei Co.

Ltd.

In this course, we’ll mainly learn the

hardware system structure, application

scenarios, basic functions of modules and

networking and configuration of the DBS3900

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

Know application scenarios of DBS3900

Master the hardware structure of DBS3900

Master the functions of different modules

Master the cables connection rules of DBS3900

Know networking and configuration examples

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《 DBS3900 System Description 》

《 DBS3900 Hardware Description 》

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DBS3900 AbbreviationsWMPT WCDMA Main Processing and Transmission Unit

WBBPa WCDMA Baseband Process unit Type A

WRFU WCDMA Radio Filter Unit

UBFA Universal BBU Fan Unit Type A (2U)

UEIU Universal Environment Interface unit

UELP Universal E1/T1 Lighting Protection unit

UFLP Universal FE/GE Lighting Protection unit

UPEU Universal Power and Environment Interface Unit

UTRP Universal Transmission Processing Unit

RCU Remote Control Unit

CPRI Common Protocol Radio Interface

AISG Antenna Interface Standard Group

TMA Tower Mounted Amplifier

SRXU Slim Receive Unit

APM Advanced Power Module

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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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DBS3900 Overview

DBS3900 is a distributed NodeB of forth generation NodeB.

DBS3900 system consists of:

BBU3900

RRU3804 or RRU3801E

Antenna and feeder system

RNC

-48V DC power Power cable

Power cable

Trunk cable Fiber or CPRI high-speedsignal cable

RRU

3804 or 3801E

BBU3900

Grounding cable

-48V/ 24VDC power Grounding cable

Antenna

TMA

RF jumper

Feeder

RF jumper

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BBU3900 in a Standard 19-Inch Cabinet Application scenario 1 :

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

Benefit of this Application Scenario:

Can reside in any standard 19-inch-wide and 2-U-high cabinet

Can be installed on the metal pole and close to the antenna

The BBU3900 and RRU can share the power supply and antenna systems of the 2G network

Enables operators to launch 3G services on the existent 2G network at a very low cost

2G BTS RF Cable

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DBS3900 Integrated Application

Launch a new 3G

outdoor site without an

equipment room

VDF Spain: RRU on Tower

Shelter Air-conditioner

Application scenario 2 :

BBU3900+RRU+APMBBU3900+RRU+APMBBU3900+RRU+APMBBU3900+RRU+APM

BBU

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BBU3900 in a Indoor Cabinet

Application scenario 3:

Launch a new 3G indoor site, there is an equipment room with limited space.

BBU1U/2URRU

1U/2URRU

1U/2URRU

RRU

RRU close to tower antenna

To RNC

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DBS3900 Product Family

Remote radio unit

RRU3804 RRU3801E

Distribute NodeB DBS3900Distribute NodeB DBS3900

Baseband unit

BBU3900

Remote radio unit

SRXU

+

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DBS3900 Capacity and Characteristics

Specification of the DBS3900

High capacity;

BBU3900 supports 24 cells, with 1,536 UL CEs and 1,536 DL CEs.

One RRU3804 supports the 4-carrier configuration.

When the NodeB expands from 1x1 to 1x4 or from 3x1 to 3x4, no

extra RRU is required.

Characteristics of the DBS3900

Supports RRU cascading

When using the 1.25 G optical module, cascading levels ≤ 4

When using the 2.5 G optical module, cascading levels ≤ 8

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DBS3900 Capacity and Characteristics

Supports ATM 、 IP and ATM/IP dual stack networking;

Supports multiple clock and synchronization modes;

Iub interface clock 、

GPS clock and

Internal clock

Supports high-speed packet access (HSPA) technology

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

The peak uplink data rate of an HSUPA subscriber is up to 5.76

Mbit/s.

Supports the Multimedia broadcast and multicast service (MBMS)

Characteristics of the DBS3900

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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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Chapter2 Hardware IntroductionChapter2 Hardware Introduction

Section1 BBU HardwareSection1 BBU Hardware

Section2Section2    RRU HardwareRRU Hardware

Section3 DBS3900 CablesSection3 DBS3900 Cables

Section4 Antenna and Feeder SubsystemSection4 Antenna and Feeder Subsystem

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Logical Structure of the BBU3900

TO RRU

Clock modeSignalingProcessing

Operation&Maintenance

Power mode

E1/T1 FETransport Interface

TransmissionAdaptationProtocolProcessing

FP

Pro

ce

ss

ing

Codling

Decoding Demodulation

Modulation

Interface

Module

Transport Subsystem Baseband Subsystem

Control Subsystem

External Subsystem OMC

CPRI

RNC

Power Control information

Control flowData flow

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BBU3900 Module Introduction

Mandatory boards and modules : WMPT, WBBP, UBFA, and UPEU

The optional boards are the UELP, UFLP, UTRP, and UEIU.

Full configuration

Typical configuration

BBU3900 Module

Baseband unitBaseband unit

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BBU3900 Module Introduction

Slot

16

Slot 18

Slot 19

SLOT0

SLOT1

SLOT2

SLOT3

SLOT4

SLOT5

SLOT6

SLOT7

Active and standby slot definition only for UTRP board

B

F

A

PEU/

EIU

PEU/

EIU

WBBP

WBBP

WBBP

WBBP

UTRP

UTRP

WMPT

WMPT

Slot boards definition

Board Slot 0 Slot 1 Slot 2 Slot 3 Slot 4 Slot 5 Slot 6 Slot 7

WMPT available available

UTRP available available available available available available

WBBP available available available available available available

UELP available available

UFLP available available

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BBU Module --- WMPT Board

Board number :

maximum is 2 for one BBU

mandatory board

working in active and standby mode

4E1:DB26

IP transmission on Electrical Port :RJ45

IP transmission Optical 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

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BBU Module --- WMPT Board

LEDs of running status of WMPT:

Label Color Status Description

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

OFF The board has no power input.

1s ON, 1s OFF The board is running as configured.

0.125s ON, 0.125s OFF The software is being loaded to the board, or the board is not in use.

ALM Red ON The board is reporting hardware alarms.

OFF The board is running properly.

ACT Green ON The board is in active mode.

OFF The board is in standby mode.

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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.

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BBU Module --- WMPT Board

Two DIP Switches :

SW1 for setting the E1/T1

working mode

SW2 for setting the

protection ground for the E1.

Settings of SW1

Bit T1 Mode 120-ohm E1 Balanced Mode

75-ohm E1 Unbalanced Mode

1 ON OFF ON

2 ON OFF ON

3 OFF ON ON

4 OFF ON ON

Settings of SW2

Bit 120-ohm E1 Balanced Mode

75-ohm E1 Unbalanced Mode

Description

1 OFF ON The RRING is for connected to the protection ground2 OFF ON

3 OFF ON

4 OFF ON

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BBU Module --- WBBPa Board

Board number : mandatory, maximum is 6

Main Functions :

Providing the CPRI interface for communication between the BBU and the

WRRU or WRFU

Processing uplink and downlink baseband signals and support HSUPA and

HSDPA function

Supporting 1+1 backup of the CPRI interface

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

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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.

CPRI0CPRI1CPRI2

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.

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BBU Module --- WBBP Board

There are 2 kinds of Baseband card, WBBPa and WBBPb.

The WBBPa can Process uplink and downlink baseband signals:

Support HSDPA (2 ms TTI) and support for HSUPA phase1 (10 ms TTI).

The WBBPb can Process uplink and downlink baseband signals.

Support HSDPA (2 ms TTI), and support for HSUPA phase2 (2 ms TTI).

Board Type Cell Uplink R99

/HSUPA CE

Downlink

R99 CE

HSDPA Capacity HSDPA

throughput

HSUPA

throughput

WBBPa 3 cells 128 256 45 HS-PDSCH codes 15Mbps 6Mbps

WBBPb1 3 cells 64 64 45 HS-PDSCH codes 15Mbps 6Mbps

WBBPb2 3 cells 128 128 45 HS-PDSCH codes 15Mbps 6Mbps

WBBPb3 6 cells 256 256 90 HS-PDSCH codes 30Mbps 12Mbps

WBBPb4 6 cells 384 384 90 HS-PDSCH codes 30Mbps 12Mbps

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Label Color Status Description

STATE Green 0.125s ON, 0.125s

OFF

The module is not registered, and no

alarm is reported.

1s ON, 1s OFF The board is running properly.

Red ON The module is reporting alarms.

Board number : mandatory, 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

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Panel of the UPEA Panel of the UPEB

BBU Module --- UPEU Board

Board number : mandatory, maximum is 2, 1+1 backup

Main Functions :

Converting -48 V or +24 V DC power input to +12 V DC power that is supported

by boards

Reporting alarms related to input and output under voltage

Providing transmission ports for RS485 signals and 8 dry contact alarm signals

-48V to +12V +24V to +12V

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LED: The UPEU has one LED, indicating the running status of the board.

Label Color Status Description

RUN Green ON The board is running properly.

OFF The board has no power input, or the board is faulty.

Socket and Port: The UPEU has one socket and four ports.

Label Quantity Connector Type Function

PWR 1 3V3 DC power input

EXT-ALM1 1 RJ45 Transmitting dry contact alarm signals

EXT-ALM0 1 RJ45

MON1 1 RJ45 Transmitting RS485 environment monitoring signals

MON0 1 RJ45

BBU Module --- UPEU Board

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

ATM between the BBU3900 and the RNC.

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, 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

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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 currentlyTransmission Board 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 WD22UPEC 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

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Label Connector Type

MON0 RJ45

MON1 RJ45

EXT-ALM0 RJ45

EXT-ALM1 RJ45

BBU Module --- UEIU Board

Port : The UEIU has four ports.

Board number: maximum is 1

The UEIU Functions :

Connecting to an external monitoring device and transmitting RS485

signals to the WMPT

Connecting to an external alarm device and transmitting dry contact alarm

signals to the WMPT

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BBU Module --- SLPU Board

The auxiliary devices of the

BBU3900. The devices are

the SLPU, UELP, and UFLP

SLPU: The signal lightning

protection unit is an optional

module of the BTS3900

cabinet (-48 V) or the power

distribution cabinet.

The UFLP and the UELP

are optional units that are

installed in the SLPU.

UFLP

UELP

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UELP: The universal E1/T1 lightning protection (UELP) unit is a universal E1/T1

The UELP can be optionally installed in the SLPU or the BBU. Each UELP

supports the surge protection of 4-way E1/T1 signals.

E1 Connection:

BBU Module --- UELP Board

DB25 DB26

Indoor DDF

E1

E1

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DIP Switch: The UELP has one DIP switch, which is used to select whether the

receive terminal is grounded. The DIP switch has four bits.

DIP Switch

DIP Status Description

1 2 3 4

S1 ON ON ON ON Used for the 75 Ω unbalanced mode

OFF OFF OFF OFF Used for other modes except the 75 Ω unbalanced mode

BBU Module --- UELP Board

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UFLP: The universal FE lightning protection (UFLP) board is optionally installed in the

SLPU or BBU. Each UFLP supports 2-way FE surge protection.

BBU Module --- UFLP Board

IP Cable Connection.

Transmission EquipmentLAN switch or Router

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Chapter2 Hardware IntroductionChapter2 Hardware Introduction

Section1 BBU Hardware Section1 BBU Hardware

Section2Section2    RRU HardwareRRU Hardware

Section3 DBS3900 CablesSection3 DBS3900 Cables

Section4 Antenna and Feeder SubsystemSection4 Antenna and Feeder Subsystem

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Logical Structure of the RRU/SRXU

Interface m

od

ule

MTRX

Power module

Du

plexer

Extension interface

TX signaling Processing

unit

SRXU

RX signaling Processing

unit

LNA

PA

LNA

RX signaling Processing

unit

BBU

LNA

LNA

RRU TX1RX1

RX2

RX3

RX4

Antenna system

Antenna system

CPRI

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RRU3804 Characteristics

Support 12dB, 24dB gain TMA

RTWP statistic and report

Standing wave detect and report

Support ASIG (Antenna Interface Standards Group) 2.0

Receiver reference sensitivity typical value -125.5dBm

RRU3804 connected to the SRXU supports 4-way RX diversity

Number of carrier Output Power per Carrier (W)

1 60

2 30

3 20

4 15

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Appearance and Specification of RRU3804/3801E

Item RRU3804/3801E

Dimension ( with

the housing )

RRU3804 : 520mm(H) x 280mm(W) x 155mm(D)

Weight RRU3804 module :≤15KG

the RRU3804 module and its housing:≤16KG

Power input -48V DC Allowed voltage range : -36 V DC to -57 V DC

maximum power consumption

275W

Sector × Carrier 1×4(RRU3804) / 1×2(RRU3801E)

Appearance of the Appearance of the RRU3804RRU3804

Appearance of the Appearance of the RRU3804RRU3804

NOTES:

The RRU3801E appearance (Panel and Ports) is the same

with the RRU3804;

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Panel and Port of RRU3804/3801E

Interconnection port between combined

cabinets

Port for RET antenna /Power output

to the SRXUMain TX/RX diversity port

Port for RX diversity

CPRI Optical ports

Indicators

Power supply ports

Grounding bolt

Alarm port

Panel of the RRU3804Panel of the RRU3804Panel of the RRU3804Panel of the RRU3804

Ports of the RRU3804Ports of the RRU3804

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LEDs on RRU3804/RRU3801E-I

Label Color Status Description

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

OFF The module has no power input or is reporting alarms

1s on, 1s off The module is operational

0.5s on, 0.5s off Software is being loaded to the module

ALM Red ON The module is reporting alarms (excluding VSWR-related alarms

OFF The module is operational

TX_ACT Green ON The module is running

OFF No specific meaning

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LEDs on RRU3804/RRU3801E--II

Label Color Status Description

VSWR Red ON VSWR-related alarms are reported

OFF No VSWP-related alarm is reported

CPRI_W Red/green

ON (green) The CPRI link is normal

ON (red) The optical module receives local alarms related to LOS

0.5s ON, 0.5s OFF (red)

The CPRI is out of lock

OFF The optical module is not in position or is powered off

CPRI_E Red/green

ON (green) The CPRI link is normal

ON (red) The optical module receives local alarms related to LOS

0.5s ON, 0.5s OFF (red)

The CPRI is out of lock

OFF The optical module is not in position or is powered off

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Appearance and Specification of SRXU

Item SRXU

Dimension ( with the housing )

SRXU : 270mm(W) x 60mm(D) x 480mm(H)

Weight The weight of the SRXU :≤6KG

Power input -48V DC Allowed voltage range : -36 V DC to -57 V DC

maximum power consumption

30W

Appearance of the SRXUAppearance of the SRXUAppearance of the SRXUAppearance of the SRXU

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Panels and Ports of the SRXU

Interconnection port between combined

cabinets

Socket for power supplyPower Input From RRU

Port for RET antenna

Port for RX diversity

Port for RX diversity

CPRI Optical ports

Grounding bolt

Indicators

Panel of the SRXUPanel of the SRXUPanel of the SRXUPanel of the SRXU

Ports of the SRXUPorts of the SRXU

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RRU Configurations

The RRU is divided into two types according to output power and carries:

40 W RRU3801E, 40W output power on the top of cabinet

60 W RRU3804, 60W output power on the top of cabinet

RRU type Frequency band Receiving Band Transmitting Band Carriers

RRU3804 UMTS2100 1920MHz ~ 1980MHz 2110MHz ~ 2170MHz 4

RRU3801E UMTS2100 1920MHz ~ 1980MHz 2110MHz ~ 2170MHz 2

RRU3804 UMTS1900 1850MHz ~ 1910MHz 1930MHz ~ 1990MHz 4

RRU3801E UMTS1900 1850MHz ~ 1910MHz 1930MHz ~ 1990MHz 2

RRU3804 UMTS1.7/2.1G 1710MHz ~ 1755 MHz 2110 MHz ~ 2155 MHz 4

RRU3804 UMTS850 824MHz ~ 849MHz 869MHz ~ 894MHz 4

RRU3801E UMTS850 824MHz ~ 849MHz 869MHz ~ 894MHz 2

RRU3801C UMTS1800 1710MHz ~ 1785MHz 1805MHz ~ 1880MHz 2

RRU3801C UMTS900 880MHz ~ 915 MHz 925MHz ~ 960MHz 2

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Chapter2 Hardware IntroductionChapter2 Hardware Introduction

Section1 BBU Hardware Section1 BBU Hardware

Section2Section2    RRU HardwareRRU Hardware

Section3 DBS3900 CablesSection3 DBS3900 Cables

Section4 Antenna and Feeder SubsystemSection4 Antenna and Feeder Subsystem

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Connections of the BBU3900 Cables

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Cables --- Power Cable of the BBU3900

This describes the power cable. Either -48 V power cable or +24 V power cable

can be used, depending on the power input.

Appearance : The power cable has a 3V3 connector at one end and bare wires

at the other end. Appropriate terminals are added to the bare end on site.

1) 3V3 connecter 2) OT terminals

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Cables --- Transmission Cable of BBU3900

E1 Cable

FE Surge Protection Transfer CableE1 Surge Protection Transfer Cable

FE Cable

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Cables --- Power Cable of the RRU3804

The RRU uses a shielded -48 V DC power cable. The cable feeds

external -48 V DC power to the RRU.

Appearance : The cable has two OT terminals at one end and bare

wire at the other end, The OT terminals need to be added on site.

Installation Position

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Cables --- Power Cable of the SRXU

The SRXU uses a shielded DC power cable. The cable feeds power

from the RRU to the SRXU.

Appearance : The cable has a waterproof DB9 connector at each end

Installation Position: One end of the DC power cable is connected to

the RET/PWR_SRXU port at the bottom of the RRU, and the other

end is connected to the PWR_SRXU socket at the bottom of the SRXU.

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BBU3900

Cables --- Optical Cable of RRU3804/SRXU

1) DLC connector 2) Label on the fiber tail 3) Fiber tail

BBU3900-RRU3804/SRXU CPRI Optical Cable

The CPRI optical cable transmits CPRI signals:

− between BBU3900 and RRU3801E

− between BBU3900 and RRU3804

− between RRU3804 and SRXU

The CPRI optical cable is a multi-mode 2-wire

cable with DLC connectors at both ends

BBU and RRU CPRI hardware connection is

same between RRU3801E and RRU3804

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AISG Multi-Wire Cables of RRU3804/SRXU

The five-meter-long AISG multi-wire cable connects the RRU3804/SRXU

to the Remote Control Unit (RCU). If both RRU3804 and SRXU are

installed, the AISG multi-wire cable only connects the SRXU and the RCU.

This cable is optional

One end of the AISG multi-wire cable is a waterproof DB9 connector, and

the other end is a standard AISG female connector

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AISG Extension Cable of the RRU3804/SRXU—Optional Cables

When the distance between the RCU and the RRU3804/SRXU is longer

than 5 m, the AISG multi-wire cable is not long enough to cover the distance

and the AISG extension cable is used. The AISG extension cable is 15 m

long

One end of the AISG extension cable is a standard AISG male connector,

and the other end is a standard AISG female connector

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RF Jumper of the RRU3804/SRXU

Waterproofed Joints

The RF jumper of the RRU3804/SRXU is of two types

Antenna jumper: transmits and receives RF signals. Both

ends of the antenna jumper have DIN connectors

Interconnect jumper: transmits RF signals between

two RRU3804s/SRXUs.

The interconnect jumper is optional, depending on the

site configuration. The interconnect jumper is 2 m

long, and both ends have 2W2 connectors

The 2W2 connectors at the two ends of the

interconnect jumper are linked to the ports labeled

RX_IN/OUT on two RRU3804s/SRXUs respectively

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RF Jumper Connections of the RRU

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Cable Connections of one RRU3804

BBU3900

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Cable Connections of one RRU3804 /SRXU

BBU3900

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Cable Connections of Multiple RRU3804s

Optical cable

Power cableBBU3900

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Cable Connections of Multiple RRU3804s/SRXUs

Optical cablePower cable

Power cable

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Chapter2 Hardware IntroductionChapter2 Hardware Introduction

Section1 BBU Hardware Section1 BBU Hardware

Section2Section2    RRU HardwareRRU Hardware

Section3 DBS3900 Cables Section3 DBS3900 Cables

Section4 Antenna and Feeder SubsystemSection4 Antenna and Feeder Subsystem

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Typical Architectures of Antenna System

(1) Directional antenna

(2) Pole (3) Outdoor jumper

(4) Outdoor cable rack

(5) Feeder clip (6) Feeder grounding kit

(7) Outdoor grounding bar

(8) To outdoor lightning protection ground

(9) Feeder window

(10) Cable tie (11) indoor jumper

(12) Indoor cable rack

(13) Feeder

Scenario1:BBU and RRU indoor

+ Roof station

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Typical Architectures of Antenna System

(1) Lightning rod (2) Pole (3) TMA

(4) Directional antenna

(5) Waterproof curve

(6) Feeder grounding clip

(7) Feeder (8) Outdoor cable rack

(9) Feeder window

(10) Outdoor grounding bar

(11) Tower grounding conductor

(12) Cable tie

(13) Guard rail

Scenario2:BBU and RRU indoor

+ Tower Station

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Typical Architectures of Antenna System

Scenario3:RRU Closed to the Antenna

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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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BBU Networking

BBUs and RNC can form multiple

networking modes such as star,

chain, tree, and hybridBBU

BBU

BBU

Chain Networking mode

Star Networking mode

BBU

BBU

BBURNC

BBURNC

BBU

BBU

BBU

Tree Networking mode

For both chain and tree networking modes

cascading levels is less than 5

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RRU 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 ≤ 4

When using the 2.5 G optical module, cascading levels ≤ 8

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Typical Configuration—1×1

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

BBU3900

RRU

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Typical Configuration—2×1

Applied to long stretched areas Applied to long stretched areas

BBU3900

RRU

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Typical Configuration—3×1/3×2

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

BBU3900

RRU

RRU

RRU

High capacity areascities

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Typical Configuration

configuration Number of WBBPs

Number of RRU3804s (No TX Diversity)

Number of RRU3801Es (No TX Diversity)

3 x 1 1 3 3

3 x 2 2 3 3

3 x 3 3 3 6

3 x 4 4 3 6

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