DBS3900 Hardware System 20081015 B 1 0

HUAWEI TECHNOLOGIES CO., LTD.

www.huawei.com

Huawei Confidential

Security Level: Internal

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2008-06

Wireless Case & Training Department

DBS3900 WiMAX Hardware System

HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential


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Page 2

PrefacePreface

This course will introduce the hardware system of

DBS3900 WiMAX, including the functions,

installation scenarios and typical configuration.



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<DBS3900 WiMAX Product Description> <DBS3900 WiMAX Hardware Description> <DBS3900 WiMAX Quick Installation Guide>

ReferenceReference



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Page 4

After this course, you will: Know the features and function of DBS3900

WiMAX. Know the hardware system of DBS3900 WiMAX. Know the typical configuration and installation

scenarios of DBS3900 WiMAX.

ObjectiveObjective



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Page 5

Chapter 1 HERT PlatformChapter 1 HERT Platform

Chapter 2 DBS3900 Hardware

Structure

Chapter 3 DBS3900 Auxiliary

Equipment

Chapter 4 Installation Scenarios

HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 6

HERT Platform

HERT: Huawei Enhanced Radio Technology

Software input

CDMA

CDMA

GSM

GSMWiMAX

WiMAX

LTE/UMB

LTE/UMBUMTS

UMTS

UniversalBTS Platform

Convergence

The HERT BTS Platform makes multi-standard convergence possible.

Unified HERT Hardware platform


HERT Platform

HERT is the platform of Huawei next generation BTS. CBTS/GBTS/NodeB/WiMAX/LTE will all use the HERT platform. HERT consists of the following components: BBU, RRU, RFU,

indoor macro BTS cabinet, outdoor macro BTS cabinet,

transmission system and Rosa (the software platform) .

These components will compose different BTS platforms, such

as the distributed BTS, indoor/outdoor macro BTS and mini BTS.


HERT Platform

Naming rule of Huawei HERT BTS:

BTS type Uni-name

　 GBTS/NodeB/CBTS/Wimax BTS/LTE

Indoor macro BTS BTS3900

Distributed BTS DBS3900

Outdoor distributed macro BTS BTS3900A

Outdoor unified macro BTS BTS3900AE

Indoor distributed BTS iDBS3900

Pico BTS BTS3900B

Mini BTS BTS3900C

Name of the WiMAX BTS: Uni-name + WiMAX Example: DBS3900 WiMAX, etc.


HERT Platform

Distributed BTS

Indoor macro BTS

Outdoor macro BTS


Chapter 1 HERT Platform

Chapter 2Chapter 2 DBS3900 Hardware DBS3900 Hardware

StructureStructure


Equipment



Chapter 2Chapter 2 DBS3900 Hardware DBS3900 Hardware StructureStructure

DBS3900 Overview

BBU

RRU

Typical Configuration

CONTENT



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Page 12

Network Position of the DBS3900

Access Service Network (ASN): includes the BS and ASN-GW. Connectivity Service Network (CSN): includes AAA and HA.

ASNCSN PSTN

BBU3900BBU3900

ASN-GWASN-GW

RRU3701C

Internet



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DBS3900 WiMAX Features Low Power Consumption. Extended Coverage and Fewer Base Stations:

Supports the advanced MIMO multi-antenna technologies. RRU3701C can be installed on the tower, requiring fewer feeders.

With an advanced all-IP platform, you can smoothly upgrade the

DBS3900 from 16e to 16m by upgrading the software and replacing a

few hardware components. Automatic detection of base stations and the remote commissioning of

installers. Flexible networking:

Four-sector networking. The DBS3900 WiMAX provides abundant transmission interfaces and

supports flexible transmission networks. Star networking can be

implemented between multiple DBS3900s and one ASN-GW.



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Page 14

DBS3900 WiMAX Components

BBU3900 RRU3701C

DBS3900 is a distributed base station which consists of one BBU

and several RRUs. The type of BBU is BBU3900, and the RRU type is RRU3701C. HERT platform BTS uses the CPRI (Common Public Radio

Interface) interface to connect the baseband module and the RF

module.



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Page 15

DBS3900 Service Performance Specifications

Item Description

Maximum number of

online subscribers

supported by a BTS

A sector supports a maximum of 1024 on-line subscribers

(including active subscribers, idle subscribers, and sleep

subscribers).

The DBS3900 in S(1/1/1) configuration supports a maximum of

3072 subscribers.

Throughput on the air

interface

Over the DL channel of a sector, the peak throughput reaches

up to 30 Mbit/s when the configurations of 10 MHz bandwidth,

PUSC/all sc, DL/UL = 32:15, and MIMO 2T2R SM are provided. Over the UL channel of a sector, the peak throughput reaches

up to 6 Mbit/s when the configurations of 10 MHz bandwidth,

PUSC/all sc, DL/UL = 32:15, and UL CSM are provided.

Remote coverage In rural areas where remote coverage (> 10 km) is required.



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Page 16

DBS3900 RF Specifications

Frequency Band (GHz)

Receive Range (GHz)

Transmit Range (GHz)

Bandwidth (Hz)

Band Ⅰ(2.5) 2.496-2.690 2.496-2.690 10M, 5M

Band Ⅱ(3.5) 3.4-3.6 3.4-3.6 10M, 5M, 7M

Band V/VI (2.3) 2.3-2.4 2.3-2.4 10M, 5M

Frequency band:

Transmitting power: When the frequency band is 2.5 GHz or 2.3 GHz, the maximum transmit

power of an antenna is 10 W, and accordingly the maximum transmit power

of an RRU is 20 W. When the frequency band is 3.5 GHz, the maximum transmit power of an

antenna port is 5 W, and accordingly the maximum transmit power of an RRU

is 10 W.



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DBS3900 Physical and Electrical Specifications　 Item BBU RRU Remarks

Dimensions (width x

depth x height mm)

442×310×86 350×125×440 　

Weight (kg) <=11 (full

configuration)

<=15 　

Power (W)

　

<=230 ( full

configuration)

280 2.3 GHz

170 2.5 GHz

220 3.5 GHz

Power input (V DC) -48 V (-38.4 V to -57 V) -48 V (-36V to -57V) DC

Operating

temperature (℃)

-10℃~ ＋ 55℃ -40℃~ ＋ 50℃(solar

radiation

considered)

-40℃~ ＋ 55℃(solar

radiation not

considered)

　



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Page 18


DBS3900 Overview

BBU

RRU


CONTENT


BBU3900

BBU3900 is the baseband unit processing baseband signals. Performing centralized management for the whole system of the

DBS3900, including OM and signaling processing. Providing the clock for the whole system. Providing physical ports for the communication between BTS and ASN-

GW. Providing maintenance channel connecting the BTS and LMT or

connecting BTS and M2000. Providing the CPRI ports used for communication between BBU and RRU.


Board Configuration of BBU3900

Structure of BBU3900

FAN

UPEU0

Slot7 BMPT

Slot6 reserved

Slot4 USCU

UPEU1

Slot5

Slot0 BBBI

Slot1

Slot2 BBBI

Slot3

BBBI and USCU boards occupies tow slots. BMPT can be configured in slot 6 or 7.


BMPT

BMPT: BWA Main Processing & Transmission unit. Configure one BMPT for each BBU in Slot 6 or 7 at most. Performs the functions of main control, clock signal

transmission, and message exchange. It provides two FE/GE

adaptive RJ45 ports and two FE/GE ports. It can also be

configured with SFP ports.


BMPT

Interface Connector Function

SFP0/1 Optical ports: LC Connected to transmission device

or GW.FE/GE Electrical

ports:RJ45

USB USB Reserved.

TST USB Clock testing.

ETH RJ45 System maintenance.

RST - Reset button.

GPS SMA Connected to GPS antenna.


BMPT

Interface Indicator Color

State Description

SFP0~SFP1 Green (LINK) ON The port is securely connected.

OFF The port is not securely connected.

Yellow (ACK) Blinks Data is transmitted or received through the port.

OFF No data is transmitted or received through the port.

ETH Green (LINK) ON The port is securely connected.




FE/GE0~FE/GE1

Green (LINK) ON The port is securely connected.





BMPT

Indicator

Color State Description

RUN Green ON There is power input and the board is faulty.

OFF There is no power input, or the board is faulty.

Blinks once every 0.25 seconds

The board is being loaded.

Blinks once every two seconds

The board is operational.

Blinks once every four seconds

The board is in the commissioning state.

ALM Red ON An alarm is generated, indicating that the board is operating in the faulty status.

OFF No alarm.

ACT Green ON Active mode.

OFF Standby mode.


BBBI


CPRI0/1/

2

Optical

ports: LC

Connects

BBU and

RRUs.

BBBI: BWA BaseBand processing and radio Interface unit. Two BBBI can be configured for each BBU in Slot 1,3 at most. One BBBI occupies two slots. Processes baseband signals, implements the functions at PHY

and MAC layers, and supports the Common Public Radio

Interface (CPRI). A BBBI is designed to support three 10 MHz sectors that comply

with the 10 MHz @PUSC + FFR, 2T2R standard.


BBBI

Indicator


RUN Green ON There is power input and the board is faulty.

OFF There is no power input, or the board is faulty.

Blinks once every 0.25 seconds

The board is being loaded.


The board is operational.

ALM Red ON An alarm is generated, indicating that the BBBI is operating in the faulty status.

OFF No alarm.

ACT Green ON The board is operating normally.

OFF The BBBI is not in operation.


USCU


GPS SMA Receive GPS

signals.

RGPS - Receive RGPS

signals.

BITS SMA BITS signals input.

TST SMA Clock testing.

USCU: Universal Satellite card and Clock Unit. One USCU can be configured for each BBU at most. One USCU board occupies two slots, in slot4,5. Performs clock synchronization and provides GPR/RGPS/BITS

input interface. Can support the satellite cards: M2M, Resolution T, GPS15L,

K161, GG16 and JNS100.


UPEU

Interface Connect

or

Function

MON1/2 RJ45 Input and output of environment alarm signals.

EXT-

ALM0/1

RJ45 Dry contact interfaces, receiving Boolean-value signals and monitoring the external environment.

PWR 3V3 -48V DC power input.

UPEU: Universal Power and Environment interface Unit, 1+1

backup. Two UPEU can be configured for each BBU at most. Provides power for the baseband subrack, with an input of –48V

DC and an output of +12V DC. Provides RS485 environment monitoring interfaces and dry

contact interfaces.


FAN

One fan unit can be configured at most. Cooling the boards and modules of BBU3900.


BBU3900 Logical Structure

PHY processing module: processing module baseband functions at the 802.16e physical (PHY) layer,

such as signal encoding/decoding and modulation/demodulation over uplink and downlink channels. MAC processing module: processing module implements lower MAC layer processing, such as QoS

scheduling. Transmission module: supports R6 tunnel management and provides service channels over Ethernet

links. The system supports two FE/GE electrical Ethernet ports and two 1.25 Gbit/s optical ports. Control module: performs functions such as radio resource management, and processing of control

signaling messages over the R6 interface. OM module: realizes the operation and maintenance of the system by providing a Ethernet port. Clock module: provides GPS clock signals, GLONASS clock signals, and free-run clock signals for the

system. Fan module: Cooling fans are equipped in the system. Power module: The power module converts -48 V DC power input into the required power output.


Clock Synchronization Modes

1

The DBS3900 supports the GPS clock. It can obtain GPS synchronization clock signals through the built-in GPS card to guarantee clock synchronization in the entire network.

2

The DBS3900 supports the GLONASS clock and can obtain GLONASS synchronization clock signals through the USCU to guarantee clock synchronization in the entire network.

3

When the GPS synchronization signals are lost, the DBS3900 automatically switches to the free-run mode. In this mode, the base station can properly work for eight hours.



DBS3900 Overview

BBU

RRU


CONTENT


RRU3701C- Appearance

RRU3701C is an outdoor module including the rack (or the

housing) and the RRU3701C module. Based on different types of the cooling, the RRU3701C is divided

into fan-cooling natural-cooling.

Fan-cooling Type Natural-cooling Type


RRU3701C Module- Function

RRU3701C is the outdoor radio remote unit, receiving RF signals and then transmitting

the processed signals to the BBU or the antenna system. Receives RF signals from the antenna system, down-converts the signals to IF signals,

performs amplification, analog-to-digital conversion, digital down-conversion, matched

filtering, and Digital Automatic Gain Control (DAGC) for the IF signals, and then transmits

them to the BBU. Receives downlink baseband signals from the BBU, performs filtering and digital-to-

analog conversion, and up-converts RF signals to the transmitting frequency band. Multiplexes RX and TX signals over RF channels, enabling the RX signals and TX signals

to share the same antenna path. In addition, it filters the RX signals and TX signals. Providing the CPRI ports used for communication between BBU and RRU.


RRU3701C Module- Panel


CPRI0/1 Optical port:

LC

Connected to BBU.

RST - Reset button.

NET COM RJ45 System

maintenance.

FAN DB15 Power input for the

fan.

ANTA/B N-type

female

connector

Connected to the

antennas.

PGND JG terminal Grounding.

BGND; -48V OT terminal -48V DC power

input.


RRU3701C Module- Indicators

Indicator


RUN Green ON The system is powered on.

OFF The system is not powered on.


The RRU3701C is running normally.

ALM Red OFF The RRU is in the normal state.

Blinks once every four seconds.

Minor alarm.

Blinks once every two seconds.

Major alarm.

Blinks once every 0.25 seconds.

Critical alarm.

ACT Green ON The services of the RRU are available (the sectors are successfully set up).

OFF The services of the RRU are unavailable.


RRU3701C Logical Structure IF module: Over downlink channels, the IF module performs

digital up-conversion and digital-to-analog (D/A) conversion. Over

uplink channels, the IF module performs analog-to-digital (A/D)

conversion, digital down-conversion, and digital I/Q

demodulation. RF module: Over downlink channels, the RF module mixes analog

IF signals with the required working frequency and sends the

mixed signals to the antenna after power amplification. Over

uplink channels, the RF module performs lower noise

amplification and down-conversion for the signals received by

the antenna and then sends the analog IF signals to the IF

module. Duplexer module: The duplexer enables received and transmitted

signals to share one antenna channel by multiplexing received

and transmitted signals over the RF channels. The duplexer

module also filters received and transmitted signals. Power amplification module: The power amplification module

amplifies the RF signals from the RF module. Fan module: in natural heat dissipation mode, no fan module is

configured; in heat dissipation fan mode, the RRU subrack is

configured with two fans for heat dissipation. Power module: The power module converts -48 V DC input into

the required power output.



DBS3900 Overview

BBU

RRU


CONTENT



Full configuration: 1 BBU can support at most 6 RRUs, with

S2/2/2 configuration.

Configuration BBBI BMPT UPEU RRU3701C

S(2/2/2) 2 1 1 6

S(1/1/1) 1 1 1 3

O(1) 1 1 1 1




Structure

Chapter 3 DBS3900 Auxiliary Chapter 3 DBS3900 Auxiliary

EquipmentEquipment



Chapter 3Chapter 3 DBS3900 DBS3900 Auxiliary Auxiliary EquipmentEquipment

APM30

EMUA

CONTENT


APM30-rack

APM30 (Advanced Power Module) is the integrated power backup system. It

can be installed outdoor. APM30 provides power supply, power backup, transmission space and

lightening protection function for the distributed BTS. It supports varies

power input. The battery rack is optional. Base on different configuration, APM30 can work as power supply

cabinet, battery cabinet and transmission cabinet.

1- Dummy panel(1U)

2- Power subrack (3U)

3- PDU (2U)

4~8 1U dummy panel

9- For battery use.


APM30-components of AC power cabinet AC power module (It is configured in APM30 AC power cabinet. It provides

AC to DC convert):

1- PSU (AC/DC)

2- PMU

PDU (It is configured in APM30 AC power cabinet. It provides AC input

and AC/DC output):1-AC input connector (N)

5-AC input air circuit breaker

2-AC input connector (L)

6-AC output air circuit breaker

3-AC output connector (Lout1, Lout2)

7-DC output air circuit breaker (SW0~SW9)

4-AC output connector (Nout1, Nout2)

8-DC output connector (LOAD0~LOAD9)


APM30-components of DC power cabinet DCDU (It is configured in APM30 DC power cabinet) DCDU (DC distribute unit) supports 1 path -48V DC input and 9 path -48V

DC output.

Two types DCDU:DCDU-03B and DCDU-03C

In APM30 (-48V) power cabinet, the DCDU-03C is configured by default.

Out put current: 7 paths 12A (LOAD0 ～ LOAD6), 2 paths 6A (LOAD7 ～ LOAD8).

Power inputLoad air circuit

breaker Power outputLightening protection alarm


Chapter 3Chapter 3 DBS3900 DBS3900 Auxiliary Auxiliary EquipmentEquipment

APM30

EMUA

CONTENT


EMUA

EMUA (Environment Monitoring Unit) is used to monitor the

environment and manage the alarm inside and outside the

cabinet. When configuring BBU3900, EMUA is optional. EMUA can support 32 path dry contacts alarms at most. EMUA can be installed in 19 inch cabinet and indoor centralized

rack. Function of EMUA:

Monitor the environment, including the temperature, water penetration

and smoke.

Monitor the intrusion, using the infrared equipment and door status

switch.

Monitor the power supply.




Structure


Equipment

Chapter 4 Installation ScenariosChapter 4 Installation Scenarios


BBU3900 Installation Modes

In the indoor cabinet. On the stand. In the APM.


BBU3900 Cable Connections

BBU3900 cable connections:

RRU

optical FE electrical cables

alarm cables

power cable

monitoring cables

External alarm equipment

External power supply system

ASN-GW

optical

External environment monitoring equipment


RRU3701C Installation Modes

On the metal pole. On the indoor or outdoor wall. On the stand.


Typical Installation Scenarios

1. -48V DC power supply with DC BOX for power distribution.



2. 220V AC power supply with APM for power conversion to -48V

DC.



2. 220V AC power supply with APM for power conversion to -48V

DC.

Thank You

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DBS3900 Hardware System 20081015 B 1 0