gsm bts3900a hardware

7/30/2019 gsm bts3900a hardware

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HUAWEI BTS3900A

Hardware Structure


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BTS3900A Cabinet

The BTS3900A cabinet is designed in compliance

with the IEC297 standard. It is a vertical cabinet

and white in color.


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BTS3900A Typical Hardware Structure

Cabinet structure based on the extended

cabinet configuration includes 6RFU RF cabinet and the APM30 power

distribution cabinet.

3RFU RF cabinet and the APM30 power

distribution cabinet.

6RFU RF cabinet, APM30 power distribution

cabinet, extended APM30 transmission cabinet,

and extended APM30 battery cabinet.

(1) RF cabinet (2) Double radio filterunit

(3) Fan module

(4) Fanenvironmentmonitor

(5) Direct currentdistribution unit (fouroutputs)

(6) GSM antennaand TMA controlmodule

(7) Baseband unit (8) Power distributionunit

(9) EPS4890

(10) APM30 powerdistribution cabinet

(11) Direct currentdistribution unit (nineoutputs)

(12) Transmissionunit

(13) ExtendedAPM30

transmissioncabinet

(14) Battery (15) ExtendedAPM30 battery

cabinet


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Power Distribution Cabinet HardwareComponents

BBU

Power Frame (AC/DC)

APMI

AFMU

PDU

GATM Module

Heater

Battery

Sensors


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BBU Hardware Structure

The typical power consumption of the BBU is 35 W.

The weight of the BBU isnt more than 10KG. The BBU is a small box with all the external ports on the front panel.

The BBU3900 boards consist of the BSBC, UEIU, GTMU, and UELP;the BBU3900 modules consist of the UBFA and the UPEU.


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BBU Board--GTMU

The GSM transmission, timing, and management unit for BBU (GTMU)

controls and manages the entire BTS. It provides interfaces related to

the reference clock, power supply, OM, and external alarm collection.

The GTMU performs the following functions: Controls, maintains, and operates the BTS.

Supports fault management, configuration management, performance

management, and security management.

Supports the monitoring of the fan module and power supply module.

Distributes and manages BTS3900 clock signals.

Provides clock input for testing.

Provides port for terminal maintenance.

Supports four E1 inputs.

Provides CPRI ports for communication with the RF modules .


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BBU Board--GTMU

DIPSwitchDIP

Switch

DIP Status Description

1 2 3 4

SW4 ON ON ON ON The E1 link can be bypassed.

OFF OFF OFF OFF The E1 link cannot be bypassed.

DIP Switch DIP Status Description

1 2 3 4

SW5 ON ON ON ON The E1 link cannot be bypassed.

OFF ON ON OFF The E1 link of the Level 1 cascaded BTS can be bypassed.

ON OFF ON OFF The E1 link of the Level 2 cascaded BTS can be bypassed.

OFF OFF ON OFF The E1 link of the Level 3 cascaded BTS can be bypassed.

ON ON OFF OFF The E1 link of the Level 4 cascaded BTS can be bypassed.

OFF ON OFF OFF The E1 link of the Level 5 cascaded BTS can be bypassed.


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BBU Module--UBFA

The universal BBU fan unit type A (2U) (UBFA) communicates withthe

GTMU to regulate the temperature, adjust the fan speed, and report

alarms. The UBFA module is hot swappable.

LED Color Status Description

STATE Green Blinking twiceper second

The board is not securelyconnected. An alarm is notgenerated.

Red On An alarm is generated.

Green Blinking onceevery twoseconds

The board operatesnormally.


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BBU Module--UPEU

The universal power and environment interface unit type A/B ((UPEU)

supports the

48 V DC(UPEA)/+24V(UPEB) power input, suppliespower to the boards, modules, and fan in the BBU, and provides

access to multiple environment monitoring signals.

The UPEU performs the following functions: Supplies power to the boards, modules, and fans.

Introduces environment monitoring signals to the BBU.

Reports fault signals, in-position signals, and version information

associated with the boards and modules.


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BBU Board--UEIU

The universal environment interface unit (UEIU) supports multiple

environment monitoring signals.The UEIU supports eight Boolean

alarm signals and two RS485 environment monitoring signals.

The UEIU is optional. It is configured when the environment

interfaces

are insufficient.


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BBU Cable connection

The BBU3900 cables are classified into the PGND cable, -48VDC

power cable, E1/T1 cable, E1 transfer cable, environment monitoring

signal cable, CPRI signal cable between the BBU and the RRU, and

BBU monitoring signal cable.

The cable connection relations of the BBU are as follows:


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Power Subrack (AC/DC)

Power Subrack (AC/DC) connects with external 220VAC power

input.The 220VAC power is converted to -48VDC power and thenconnects

with DCDU module.

PMU (Power and Environment Monitoring Unit) modulemanages the power supply and batteries. The DPMU is thecore of the power monitoring system.

PSU (Power Supply Unit) module Converts the 220 V ACpower into the -48 V DC power.

Wiring unit is used to connect with 220VAC power input cable

and connects the cable from DCDU module.


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Power Subrack (AC/DC)PMU ModuleThe DPMU manages the power supply and batteries. The

DPMU is

the core of the power monitoring system.

The DPMU performs the following functions:

Communicates with the central processing unit through

the RS232/RS422

serial port.

Manages the power system and the battery charging

and discharging.

Detects and reports water damage alarms, smoke

alarms, door status

alarms, and standby Boolean value alarms; reports

ambient humidity and

temperature, battery temperature, and standby analog

values.

Detects power distribution and reports alarms, and also

reports drycontact alarms.


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Power Subrack (AC/DC)Wiring Unit

The power subrack works in the following environment:

The wiring unit is connected to the external power supply through the

terminalsL and N wires, and leads the power to the PSU (AC/DC) through the

backplane.

The PSU (AC/DC) converts the input AC power into the -48 V DC power.

The DPMU monitors the operating status of the PSU (AC/DC).

The wiring unit provides -48 V DC power outputs through LOAD1(-),LOAD2(-),

and RTN(+).


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APMI Board

The APMI board refers to APM Power Monitor unit Interface board. The

APMI board is located at the upper left corner of the APM30 cabinet,

and performs the following functions:

Transfers the APM30 serial port communication signals, Boolean

input/output signals, and EMI signals.

Protects the dry contact input/output signals and RS485 signals

(connected to the BBU/BTS)


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AFMU Board

The AFMU board refers to APM Fan Monitor unit Interface Board. The

AFMU board is located at the upper right corner of the APM30 cabinet,

and performs the following functions: Provides DC power supply to the APMI and AFMU boards through the DC

power port

Supplies DC power to the two fans at the top of the cabinet and reports the

alarms of the fans

Reports the alarms of the internal ambient temperature sensor, air inlet

temperature sensor, and air outlet temperature sensor

The alarm signals of the AFMU board is transported to the APMI boardthrough

the signal transfer cable and then is reported to the BBU.


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PDU Module

The PDU (short for Power Distribution Unit) performs AC or DC power

distribution.

The AC distribution functions of the PDU are as follows:

Supplies two AC power outputs with the maximum current of 10 A to the

heaters

of the power cabinet and the heating film of the battery cabinet.

Reports the surge protection alarms of the AC input power .

The DC distribution functions of the PDU are as follows: Provides 10 DC power outputs to meet the DC power requirements of t

he distributed base station or the separated base station

Reports the surge protection alarms of the DC output power


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GATM Module

The GSM antenna and TMA control

module (GATM) is a modulethat controls the antenna and TMA.The GATM is optional.

The GATM performs the followingfunctions:

Controls the RET antenna

Feeds power to the TMA

Reports the RET control alarm signals

Monitors the current from the feeder


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Heater

The heater functions in the low-temperature environment to provide

suitable working temperature for the batteries in the power cabinet or

transmission cabinet. When the working temperature is lower than the

temperature specification for the battery, the battery capacity declines.

So the heater is installed in the battery cabinet to provide the optimal

working temperature for the batteries.

The technical specifications of the heater are as follows:

A heater keeps the cabinet temperature higher than 10. When theinternal

temperature of the cabinet is lower than 5, the heater starts to work;

when

the internal temperature is higher than 15, the heater stops working.

The maximum power consumption of a 220 V heater is 300 W.


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Battery

The power cabinet can house 1 to 3 groups of -48 V 12 AH batteries, which canform the -48 V 12 AH battery group system, the -48 V 24 AH system, or the -48 V

36 AH system. The details are as follows: The -48 V 12 AH or -48 V 24 AH battery group is installed in the 3 U spaceat the bottom, and the remaining 5 U space can be used to install the userdevices.

The -48 V 36 AH battery group is installed

in the 6 U space at the bottom, and the

remaining 2 U space can be used to install

the user devices.


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Sensors

Door Status Sensor

The door status sensor is made up of two parts, the magnet part and the switch

part.


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Sensors

Temperature Sensor

The temperature sensors of the APM30 consist of the air inlet temperature

sensor, internal ambient temperature sensor, and the air outlet temperaturesensor.


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Section 1 System Structure

Section 2 PD Cabinet Hardware Component

Section 3 RF Cabinet Hardware Component

Section 4 DRFU Work Mode


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RF Cabinet HardwareComponents

DRFU

DCDU-02 FAN Unit

FMUA

Battery

Door Sensor


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DRFU Logical Structure

The DRFU performs modulation and demodulation between baseband

signals and RF signals, processes data, and combines and dividessignals.

The DRFU consists of the high-speed interface unit, signal processing

unit, power amplifier, and dual-duplexer.


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DRFU Board

Ports on the panel

Type Connector Ports DescriptionPort fortransceiving RFsignals

N femaleconnector

ANT1 Used in connection to theantenna subsystem

ANT2

CPRI port SFP femaleconnector

CPRI0 Used in connection to the BBU,or in connection to the upper-level cascaded DRFU

CPRI1 Used in connection to thelower-level cascaded DRFU

Port fortransmitting RFsignalsbetweenDRFUs

QMA femaleconnector

RX1 in Input port for diversity signalsin antenna channel 1

RX1 out Output port of diversity signalsin antenna channel 1

RX2 in Input port for diversity signals

in antenna channel 2RX2 out Output port of diversity signals

in antenna channel 2

Power port 7W2 powerconnector

PWR Receives power input


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BTS3900A Configuration Principles

Configuration Principles of the BBU

Minimum number of trunk cables. You can determine

the number of trunk cables as required, and take theexisting configuration for saving transmissionresources into account in networking.

Minimum number of UPEUs. The configuration of asingle UPEU is recommended. The redundancy

backup mode can be configured if required.

One BBU supports six CPRI ports. The star topologyis recommended between DRFUs.


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BTS3900A Configuration Principle

Configuration Principles of DRFU

A single DRFU does not support the S1/1 application; however, threeDRFUs support the S3/3 application.

The cell configuration of S4 and lower configurations use a singleantenna, the configurations of S5 to S8 use a double antenna, and theconfigurations of S8 to S12 use a triple antenna.

The non-combination configuration is recommended for the DRFU toavoid the power loss in combination and to reduce the powerconsumption of the BTS.

gsm bts3900a hardware

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