WCDMA DBS3900 Hardware Structure Issue1 0

Internal

WCDMA DBS3900 System Hardware Structure DBS3900V200R010 WRAN Training Team

HUAWEI TECHNOLOGIES CO., LTD.

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www.huawei.com

 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 Abbreviations WMPT

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 APM

Slim Receive Unit Advanced Power Module


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Chapter1 General Description Chapter2 Hardware Introduction Chapter3 Networking and Configuration


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DBS3900 Overview  DBS3900 is a distributed NodeB of forth generation NodeB.  DBS3900 system consists of:

 BBU3900 Antenna

 RRU3804 or RRU3801E

RRU

 Antenna and feeder system

TMA

3804 or 3801E

RF jumper

Feeder

Grounding cable

-48V DC power

RF jumper

Power cable BBU3900

-48V/ 24V DC power

Grounding cable Power cable

Trunk cable

Fiber or CPRI high-speed signal cable

RNC


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

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

2G BTS RF Cable

 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 HUAWEI TECHNOLOGIES CO., LTD.

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DBS3900 Integrated Application 

Application scenario 2 ：  Launch a new 3G outdoor site without an equipment room VDF Spain: RRU on Tower

Air-conditioner

Shelter

BBU

BBU3900+RRU+APM BBU3900+RRU+APM


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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.

RRU close to tower antenna To RNC

RRU 1U/2U RRU 1U/2U BBU


RRU 1U/2U

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DBS3900 Product Family Distribute NodeB DBS3900

Remote radio unit

Baseband unit

Remote radio unit

+ BBU3900 SRXU

RRU3801E

RRU3804


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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 Characteristics of the DBS3900  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)


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Chapter2 Hardware Introduction Section1

BBU Hardware

Section2 　 RRU Hardware Section3

DBS3900 Cables

Section4

Antenna and Feeder Subsystem


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Logical Structure of the BBU3900 OMC

External Subsystem

Control Subsystem

Clock mode

Signaling Processing

Operation& Maintenance

Power mode

Decoding Transmission Adaptation Protocol Processing

FP Processing

RNC

E1/T1 FE Transport Interface

Demodulation Power Control information

Modulation

Codling Transport Subsystem

Baseband Subsystem Data flow


Control flow

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Interfac CPRI e Module

TO RRU

BBU3900 Module Introduction  Full configuration

Baseband unit

 Typical configuration

BBU3900 Module

 Mandatory boards and modules ： WMPT, WBBP, UBFA, and UPEU  The optional boards are the UELP, UFLP, UTRP, and UEIU.


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BBU3900 Module Introduction Slot

SLOT0

SLOT4

16

SLOT1

SLOT5

SLOT2

SLOT6

SLOT3

SLOT7

Slot 18 Slot 19

B

WBBP

UTRP

PEU/

F

WBBP

UTRP

EIU

A

WBBP

WMPT

PEU/

WBBP

WMPT

EIU

Active and standby slot definition only for UTRP board

Board

Slot 0

Slot 1

Slot 2

Slot boards definition

Slot 3

Slot 4

Slot 5

WMPT UTRP

available

available

available

available

available

available

WBBP

available

available

available

available

available

available

UELP

available

available

UFLP

available

available


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Slot 6

Slot 7

available

available

BBU Module --- WMPT Board IP transmission on Electrical Port :RJ45

Loading

Commissioning:RJ45

 Board number ：

 maximum is 2 for one BBU  mandatory board  working in active and standby mode

Testing:USB

IP transmission Optical signals: SFP

GPS antenna: SMA

LEDs 4E1:DB26

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.

ON

The board is reporting hardware alarms.

OFF

The board is running properly.

ON

The board is in active mode.

OFF

The board is in standby mode.

ALM

ACT

Red

Green


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BBU Module --- WMPT Board

LED

Color

LEDs beside the FE1 Green and FE0 optical port Yellow LEDs beside the ETH Green port Yellow


Status

Description

ON

The connections are functional.

OFF

The connections are faulty.

Blinking

There is ongoing data transmission.

OFF

There is no data transmission.

ON

The connections are functional.

OFF

The connections are faulty.

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 Description Mode

1

OFF

ON

2

OFF

ON

3

OFF

ON

4

OFF

ON

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The RRING is for connected to the protection ground

BBU Module --- WBBPa Board CPRI 0 ~2 (1.25G-2.5G): SFP

LEDs

 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. HUAWEI TECHNOLOGIES CO., LTD.

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BBU Module --- WBBPa Board  LED of running status of board : Label

Color

Status

Description

RUN

Green

ON


OFF

The board has no power input or is faulty.

1s ON, 1s OFF


0.125s ON/OFF

Software is being loaded to the board.

ON


OFF

The board is not in use.

OFF


ON

The board has alarms on hardware and it should be replaced with a new one.

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.

ACT

ALM

CPRI0 CPRI1 CPRI2

Green

Red

Red Green


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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

Downlink

/HSUPA CE

R99 CE

HSDPA Capacity

HSDPA

HSUPA

throughput

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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BBU Module --- UBFA Board

 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 Label

Color

Status

STATE

Green

0.125s ON, 0.125s The module is not registered, and no

Red


Description

OFF

alarm is reported.

1s ON, 1s OFF


ON

The module is reporting alarms.

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BBU Module --- UPEU Board  Panel of the UPEA

 Panel of the UPEB

+24V to +12V

-48V to +12V

 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 HUAWEI TECHNOLOGIES CO., LTD.

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BBU Module --- UPEU Board  LED: The UPEU has one LED, indicating the running status of the board.

Label

Color

Status

Description

RUN

Green

ON


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

MON0

1

RJ45


Transmitting RS485 environment monitoring signals

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BBU Module --- UTRP Board 

The UTRP provides ports for eight E1s/T1s and implements transport such as IP and ATM between the BBU3900 and the RNC. 4 E1:DB26

Label

Color

Status

Description

RUN

Green

ON


OFF

The board has no power input or is faulty.

1s ON, 1s OFF


0.125s ON, 0.125s OFF

Software is being loaded to the board.

2s ON, 2s OFF

The board is under test.

ON

The board is in active mode.

OFF

The board is in standby mode.

OFF


ON

The board is reporting alarms and is faulty.

ACT

ALM

Green

Red


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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 Transmission Sub board type gray tableInterface is not be delivered Board name name

currently

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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BBU Module --- UEIU Board  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  Port : The UEIU has four ports.


Label

Connector Type

MON0

RJ45

MON1

RJ45

EXT-ALM0

RJ45

EXT-ALM1

RJ45

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BBU Module --- SLPU Board UFLP  The auxiliary devices of the

UELP

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.


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BBU Module --- UELP Board  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. DB26

DB25



E1 Connection: E1 E1

Indoor DDF


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BBU Module --- UELP Board  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 S1


DIP Status 1

2

3

Description 4

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

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BBU Module --- UFLP Board  UFLP: The universal FE lightning protection (UFLP) board is optionally installed in the

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

IP Cable Connection. 


Transmission Equipment LAN switch or Router

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BBU Hardware


DBS3900 Cables

Section4



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Logical Structure of the RRU/SRXU RRU PA

Duplexer

Interface module

BBU

CPRI

TX signaling Processing unit

MTRX RX signaling Processing unit Extension interface

TX1 RX1

LNA

RX2 Antenna system

LNA Power module

RX3 RX signaling Processing unit

LNA

SRXU


RX4

LNA

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Antenna system

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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 Appearance Appearance of of the the RRU3804 RRU3804

Item Dimension （ with the housing ） Weight

RRU3804/3801E RRU3804 ： 520mm(H) x 280mm(W) x 155mm(D) RRU3804 module :≤15KG the RRU3804 module and its housing:≤16KG

Power input maximum power consumption Sector × Carrier



-48V DC

Allowed voltage range ： -36 V DC to -57 V DC

275W

1×4(RRU3804) / 1×2(RRU3801E)

NOTES:

The RRU3801E appearance (Panel and Ports) is the same with the RRU3804; HUAWEI TECHNOLOGIES CO., LTD.

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Panel and Port of RRU3804/3801E Indicators CPRI Optical ports

Panel Panel of of the the RRU3804 RRU3804

Interconnection port between combined cabinets

Alarm port Power supply ports

Main TX/RX diversity port

Port for RET antenna /Power output to the SRXU

Grounding bolt Port for RX diversity


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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

ON

The module is reporting alarms (excluding VSWR-related alarms

OFF

The module is operational

ON

The module is running

OFF

No specific meaning

ALM

TX_ACT

Red

Green


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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

CPRI_E

Red/gree ON (green) n ON (red)

The CPRI link is normal 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

Red/gree ON (green) n ON (red)

The CPRI link is normal 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 Appearance Appearance of of the the SRXU SRXU

Item

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

Dimension （ wit h the housing ） Weight The weight of the SRXU :≤6KG Power input

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

maximum power 30W consumption


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Panels and Ports of the SRXU Indicators CPRI Optical ports

Panel Panel of of the the SRXU SRXU

Socket for power supply Power Input From RRU Interconnection port between combined cabinets Port for RET antenna

Grounding bolt

Port for RX diversity

Ports of the SRXU Port for RX diversity


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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

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


Transmitting Band

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Carriers


BBU Hardware


DBS3900 Cables

Section4



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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

E1 Surge Protection Transfer Cable


FE Cable

FE Surge Protection Transfer 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. HUAWEI TECHNOLOGIES CO., LTD.

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Cables --- Optical Cable of RRU3804/SRXU 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

BBU3900

1) DLC connector

2) Label on the fiber tail


3) Fiber tail

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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 

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

Waterproofed Joints

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 HUAWEI TECHNOLOGIES CO., LTD.

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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 cable

BBU3900


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Cable Connections of Multiple RRU3804s/SRXUs

Power cable Power cable

Optical cable


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BBU Hardware


DBS3900 Cables

Section4



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Typical Architectures of Antenna System  Scenario1:BBU and RRU indoor

+ Roof station (1) Directional antenna

(2) Pole

(3) Outdoor jumper

(4) Outdoor cable (5) Feeder clip (6) Feeder rack 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


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Typical Architectures of Antenna System  Scenario2:BBU and RRU indoor

+ Tower Station (1) Lightning rod

(2) Pole

(4) Directional antenna

(5) Waterproof (6) Feeder curve 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


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(3) TMA

Typical Architectures of Antenna System  Scenario3:RRU Closed to the Antenna


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BBU Networking  BBUs and RNC can form multiple

networking modes such as star, BB U

BB U

BB U

chain, tree, and hybrid

Chain Networking mode

BBU BBU BBU RNC

BBU Tree Networking mode BBU

For both chain and tree networking modes

BBU

cascading levels is less than 5 RNC

BBU

Star Networking mode


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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 circumstances

RRU

BBU3900


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Typical Configuration—2×1 Applied to long stretched areas

RRU

BBU3900


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Typical Configuration—3×1/3×2 Applied to cities or other high capacity areas

RRU

High capacity areas

cities RRU

RRU

BBU3900


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Typical Configuration configuration

Number of WBBPs

Number of RRU3804s (No TX Diversity)

Number of RRU3801Es (No TX Diversity)

3x1

1

3

3

3x2

2

3

3

3x3

3

3

6

3x4

4

3

6


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Page 71

Thank You www.huawei.com

WCDMA DBS3900 Hardware Structure Issue1 0

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