HUAWEI BTS3900E Hardware Structure and Principle-090519-IsSUE1.0-B

Security Level: Internal Use

2009-05

HUAWEI BTS3900E Hardware Structure and Principle

ISSUE1.0 GBSS Training Team

HUAWEI TECHNOLOGIES Co., Ltd.

HUAWEI Confidential

www.huawei.com



BTS3900E is industry-leading compact BTS unveiled by Huawei. It is one of the fourth-generation BTS. Characterized by its small size, large capacity, and low power consumption and only one functional module, the BTS3900E, is an integrated BTS with outstanding performance, which is applicable to the indoor coverage, hotspot coverage, and rural edge network coverage.


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

Know the BTS3900E hardware structure and principle



Know the BTS3900E typical networking and scenarios



Master the BTS3900E data configuration



Know the BTS3900E power supply and monitoring solution



Master the BTS3900E functions and features


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

BTS3900E GSM User Guide-(V300R008_01)



GSM BTS3900E Deployment Guide-20090430-A-V1[1].0



GBSS8[1][1].1 BTS3900E Product Description V1.0(20090223)



GBSS8[1][1].1 BTS3900E Sales Guide V1.1(20090505)


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Chapter 1 Overview of BTS3900E Chapter 2 BTS3900E Hardware Structure and Principle Chapter 3 BTS3900E Typical Networking and Configuration Chapter 4 BTS3900E Typical Scenarios Chapter 5 BTS3900E Power Supply and Monitoring Solution Chapter 6 BTS3900E New Functions and Features


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BTS3900E Overview 

The BTS3900E has a highly integrated design, Small and lightweight, the BTS3900E is easy to install and endowed with high capacity and extraordinary performance. The BTS3900E incorporates all the functions of conventional BTSs in one functional module.


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BTS3900E Advantage 

Compact Structure and Quick Network Construction 

The BTS3900E has a highly integrated design, requiring less cable connections and facilitates installation and maintenance.



In compliance with the IP65 protection degree, the BTS3900E features strong environment adaptability and has no need for an equipment room.



The BTS3900E can share the Distributed Antenna System (DAS) on the existing network.



the compact and lightweight BTS3900E has a small number of spare parts, thus greatly reducing the cost of transportation and maintenance.



The various installation options such as wall-mounted, tower-mounted, supportmounted, and pole-mounted are possible with the BTS3900E which can realize quick and flexible site deployment, significantly accelerating network construction.


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BTS3900E Advantage 

Expanded Capacity and Enhanced Coverage 

In contrast to conventional indoor coverage solutions, the BTS3900E substantially expands the capacity of the coverage, enhances the traffic absorbing capability.



Since it can be installed close to the antenna system, BTS3900E has a high transmission power at the Top of Cabinet. Combined with the flexibility in site deployment, the BTS3900E remarkably improves network coverage.



Thanks to the advanced Multi-Carrier Power Amplifier (MCPA) technology, the BTS3900E can smoothly and quickly change from the coverage mode to the capacity mode, flexibly responding to network requirements at different phases.



Low Power Consumption and Energy Saving 

The low power consumption design and natural heat dissipation mode allow the BTS3900E to work in energy saving and mute mode.





Green energy such as the solar and wind energy can be fully utilized.

Low Power Consumption and Energy Saving 

The BTS3900E supports the PS service of the GPRS and EDGE and smooth

evolution to the EDGE+, thus providing data services of higher rates.


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BTS3900E Features 

Features of the BTS3900E 

One site supports up to 3 BTS3900E modules, , three sectors, and 18 TRXs.



Support the advanced Multi-Carrier Power Amplifier (MCPA) technology, The BTS3900E supports up to six carriers.



BTS3900E in full configuration is the S666. The omni-directional BTS3900E

supports the O12 configuration at most. 

Support the whole frequency band of PGSM900/EGSM900, high 45MHz frequency band and low 45MHz frequency band of DCS1800MHz.



The BTS3900E has only one transmit channel; therefore, it does not support the cross-cell configuration.



The BTS3900E does not provide the receive diversity interconnection interface, that is, when a cell adopts the configuration of two modules with a single antenna, the receive diversity cannot be implemented.



The BTS3900E can be deployed with the BSC in the star, chain, and ring networking modes (the tree networking mode not supported). In the chain and ring

networking modes, up to five cascading levels are supported.


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BTS3900E Features 

Features of the BTS3900E 

Support E1/IP transmission. Support whole IP networking modes.



Support Easy GSM Features.



Support local switching.



The AC BTS3900E module supports the report of the mains power-off alarm. When AC modules of a site are combined, the alarm is generated only when the mains of the major cabinet module is powered off.



If the built-in antenna (directional antenna or omni-directional antenna) is used, the receive diversity signal is not available.



Support Clock over IP Client.



The DC BTS3900E module supports the two-level cascading power supply.


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Restriction of the BTS3900E 

Restriction of bandwidth 

If the frequency is limited, in the scenario that less than or equal to six TRXs are configured in the cell and two modules are required, the BTS3900E is not recommended.



Item

BTS3900E

Transmit instantaneous bandwidth (MHz)

15 MHz

Receive instantaneous bandwidth (MHz)

25 MHz

Functions cannot be used with the power sharing 

Concentric cell



Co-BCCH



Aggressive frequency reuse in BCCH


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Restriction of the BTS3900E 

Restriction of Frequency hopping capability 

If the frequency set meets the restriction of 15 MHz, the baseband frequency hopping and RF frequency hopping are supported.



For the O7–O12 model configured with two modules, if the transmit frequency set does not meet the restriction of 15 MHz, but meets the restriction of receive 25 MHz, you can configure the baseband frequency hopping and one frequency hopping group.



If the frequency set does not meet the restriction of 15 MHz, but the RF frequency hopping is required, you can configure two frequency hopping groups. Each group

cannot exceed the restriction of 15 MHz.


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BTS3900E Output Power 

The output power of the BTS3900E is classified into two kinds at present: output power based on the ETSI specifications and output power based on the Class 2 specifications.

900 MHz

1800 MHz

TRX Quantity

Static output power (GMSK/8PSK)


13 W/8.5 W

1TRX

30 W/20 W

26 W/17 W

8 W/5 W

7 W/4.7 W

2TRX

15 W/10 W

13 W/8.5 W

6 W/4 W

5 W/3.3 W

3TRX

8 W/5 W

7 W/4.7 W

BTS3900E output power based on the ETSI specifications 4TRX

6 W/4 W

5 W/3.3 W

5TRX

3 W/2 W

2.5 W/1.6 W

6TRX

2.5 W/1.6 W

2 W/1.3 W

900 MHz

1800 MHz



1TRX

30 W/20 W

26 W/17 W

2TRX

15 W/10 W

3TRX 4TRX

TRX Quantity

BTS3900E output power based on the Class 2 specifications


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BTS3900E Module 

With a highly integrated structure, the BTS3900E incorporates all the following functions of conventional BTSs in one functional module: transmission, main control, baseband processing, RF processing.



The BTS3900E has two types of functional modules: AC module and DC

module, where the former supports 110 and 220 V AC power inputs and the latter supports –48 V DC power input.

BTS3900E AC HUAWEI TECHNOLOGIES Co., Ltd.

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BTS3900E DC Page 15

BTS3900E Hardware Architecture 

The functional module of the BTS3900E consists of the following units: AC/DC converter, DC/DC converter, Transmission interface unit, Alarm interface unit, Main control unit, Baseband unit, RF unit.

Structure of the AC module


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Structure of the DC module

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BTS3900E Hardware 

Dimensions (with the housing ): 17L(DC)，23L(AC)



Dimensions (without the housing ): 12L(DC)，17L(AC)



Weight (with the housing ): 13.5kg(DC) , 17Kg(AC)



Weight (without the housing ): 12kg(DC) , 15.5Kg(AC)

130mm




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



BTS3900E DC

130mm

485 mm

485 mm



BTS3900E AC

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Panels of the BTS3900E 

The BTS3900E has three panels, namely bottom panel, cabling cavity panel, and LED panel.



The panels of the AC-powered BTS3900E and the DC-powered BTS3900E are at the same positions.



The power socket of the DC-powered BTS3900E is located in the cabling cavity whereas that of the AC powered BTS3900E is at the bottom.

1 2 3 No.

Description

1

LED panel

2

Cabling cavity panel

3

Bottom panel

Panels of the DC-powered BTS3900E


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Panels of the AC-powered BTS3900E

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Panels of the BTS3900E Item


Label SFP0

Description High-speed ports for BTS3900E cascading

SFP1 FE

Transmission port, supporting 802.3af compliant Power-over-Ethernet (PoE)

ETH

Ethernet port for local maintenance

VSWR

Button for the VSWR test

SW

DIP switch. For details

RST

Button for resetting the BTS3900E

USB

Reserved port. Function to be implemented: Automatic software upgrade through USB disk

RTN(+)0

DC-powered BTS3900E: Wiring posts for DC power input to the BTS3900E

NEG(-)0 RTN(+)1

DC-powered BTS3900E: Wiring posts for power supply to the cascaded BTS3900E

NEG(-)1

Bottom panel

ANTA_TX/RX

Antenna connector for transmitting and receiving RF signals

ANTB_RX

Antenna connector for receiving RF signals

RET/TST

Reserved port Functions to be implemented: This port will work as an RET antenna port that is in compliance with AISG2.0 protocol. The BTS3900E will communicate with the RET antenna through this port in order to control the RET antenna.

E1/T1

Transmission port, providing two E1s/T1s

MON

Monitoring port, providing one RS485 environment monitoring signal input and four dry contact environment monitoring signal inputs

PWR

AC-powered BTS3900E: for AC power input


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Bottom panel Page 19


LEDs on the BTS3900E

LED RUN

Color Green

ALM

Red

TX_ACT

SFP0/SFP1

VSWR

LIU0/LIU1

FE

Green

Red/Gree n

Red

Green

Green

MODE

Green

State

Description

Blinking (ON for 1s and OFF for 1s)

The BTS3900E works properly.

Blinking (ON for 0.25s and OFF for 0.25s)

Software is being loaded to the BTS3900E, or the BTS3900E is not started.

ON

The power input is normal, but the BTS3900E is faulty or being started.

OFF

The BTS3900E has no power input, or alarms are generated.

ON

An alarm is generated, and the BTS3900E needs to be replaced.


An alarm is generated and needs to be cleared according to the handling suggestion.

OFF

No alarm is generated.

ON

The PA works properly.


The BTS3900E works properly, but the PA does not work.

ON (green)

The CPRI link is normal.

ON (red)

Data reception is abnormal.

Red (ON for 2s and OFF for 2s)

The CPRI link is out of lock.

OFF

The SFP module is out of position.

OFF

No VSWR alarm is generated.

ON

A VSWR alarm is generated at the ANTA_TX/RX port.

ON

A local E1 alarm is generated, or the E1 cable is not connected.


A remote E1 alarm is generated.

OFF

The BTS3900E works properly.

OFF

The FE connection is faulty.

ON

The FE connection is normal.

ON

The BTS3900E module is a basic module.


The BTS3900E module is an extension module.


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DIP Switch on the BTS3900E 

When the modules are combined, the BTS3900E module connected to the BSC through the E1/FE port is called the major cabinet module, and the modules connected to the major cabinet module through the combined cabinet interfaces are called the minor cabinet modules. The major cabinet module and minor cabinet

modules must be determined by the DIP in the maintenance cavity. 

There is only a 4-bit DIP switch on the BTS3900E.



The 4-bit DIP switch is located in the BTS3900E cabling cavity.



After setting the DIP switch, you need to reset the BTS3900E to make the settings take effect.



Functions of the 4-bit DIP switch 

Bits 1 and 2 are used to specify whether the BTS3900E is a basic module or an extension module and the transmission mode.



When bits 1 and 2 are set to ON, bits 3 and 4 can be used to specify the grounding state of the 75-ohm E1 transmission.


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Settings of the 4-bit DIP switch

Setting 1

2

ON

ON

Description 3

4

OFF

OFF

Basic module, 75-ohm E1 transmission, RX not grounded

Default settings of the 4-bit DIP switch

Setting 1

Description 2

ON

ON

Basic module, 75-ohm E1 transmission

OFF

ON

Basic module, 120-ohm E1 transmission

ON

OFF

Basic module, T1 transmission

OFF

OFF

The BTS3900E module is an extension module.

Bit

Setting

Description

3

ON

The second E1, RX grounded

OFF

The second E1, RX not grounded

ON

The first E1, RX grounded

OFF

The first E1, RX not grounded

4

Settings of the 4-bit DIP switch (2)

Settings of the 4-bit DIP switch (1)


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Auxiliary Devices of the BTS3900E 

Briefly description of the BTS3900E Auxiliary Devices

Auxiliary devices

Description

APM30(Advanced Power Module 30)

Backup power system for outdoor applications. The APM30 consists of the power cabinet, battery cabinet, and transmission cabinet. The battery cabinet provides long-term power backup. The transmission cabinet provides 11 U space for transmission devices.

APM30H Advance Power Module (with Heatexchanger Cooling)

Backup power system for outdoor applications. The APM30H consists of the APM30H power cabinet, IBBS200T, and TMC11H. The IBBS200T provides long-term power backup. The TMC11H provides DC power and space for customer equipment.

EMU (Environment Monitoring Unit)

Monitoring environmental conditions of the equipment room.

AC Surge Protection Box

Provide surge protection for AC power, and the surge protection capability is 15 kA in either differentiated mode or common mode.


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Auxiliary Devices of the BTS3900E 

AC Surge Protection Box 

If the AC BTS3900E is used in the outdoor coverage, the surge protection box must be configured. The model of the surge protection box is SPD60D.



The AC surge protection box is used to provide surge protection for AC power, and the surge protection capability is 15 kA(10/350us) in either differentiated mode or common mode. Item

Description

Depth (mm) x width (mm) x height (mm)

240 x 140 x 75

Installation option

Pole-mounted or wall-mounted

Surge protection capability

15 kA either in differentiated mode or in common mode (10/350 us)

Item (a) Bottom panel

(b) Side panel

(c) Cabling cavity panel

Label

Description

IN

AC power input

OUT

Output of protected power

-

Wiring terminal for the external PGND cable

-

Wiring terminal for the PGND cable of the BTS3900E

L/L'

Wiring posts for the power cable

N/N' GND


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BTS3900E Networking 

Networking Capability 

The BTS3900E provides two E1 interfaces. It can be deployed with the BSC in the star, chain, and ring networking modes (the tree networking mode not supported). In the chain and ring networking modes, up to five cascading levels are supported.



If the BTS3900E adopts the FE IP transmission, only the star networking mode is

supported. 

If the BTS3900E adopts the IP transmission mode, The BTS3900E supports the IP private network transmission mode only.



Networking description 

The BTS3900E module connected to the BSC is the major cabinet module, which supports the transmission with the BSC and provides the baseband and RF signals processing function.



The BTS3900Es connected to the major cabinet module are the minor cabinet modules, which are connected to the major cabinet module through high-speed cables or optical cables and provide the baseband and RF signals processing function.


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Combined cabinet——star networking mode 

The physical connection must be consistent with the data configuration.



The major cabinet module and minor cabinet modules must be determined by the DIP in the maintenance cavity.

BTS3900E

ABIS

BTS3900E

High-speed cables or optical cables

BTS3900E


BSC6000


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Combined cabinet——chain networking mode 

The physical connection must be consistent with the data configuration.



The major cabinet module and minor cabinet modules must be determined by the DIP in the maintenance cavity.

BTS3900E

ABIS

BTS3900E

BTS3900E


BSC6000



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BTS3900E Typical Configuration 

Indoor coverage, O1-O6 

One BTS3900E, One uni-polarized antenna.



The Send Receive Mode: Single Feeder (1TX + 1RX).

ANT Antenna

ANTA_TX/RX

ANTB_RX

SFP0

SFP1


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Indoor coverage, O2-O12 

Two BTS3900Es, One dual-polarized antenna.




ANT Antenna

ANTA_TX/RX

ANTB_RX ANTA_TX/RX

ANTB_RX

SFP0

SFP0

SFP1

SFP1

Combined cabinet cable


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Outdoor coverage, O1-O6 

One BTS3900E, One dual-polarized antenna.




ANT Antenna

ANTA_TX/RX

ANTB_RX

SFP0

SFP1


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Outdoor coverage, S1/1 to S6/6 

Two BTS3900Es, Two dual-polarized antennas.




ANT

Antenn a

ANT

Antenn a

ANTA_TX/RX ANTB_RX

ANTA_TX/RX

SFP0

SFP0

SFP1

SFP1

ANTB_RX

Inter-BTS3900E cable


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Outdoor coverage, S1/1/1 to S6/6/6 

Three BTS3900Es, Three dual-polarized antennas.




ANT

ANT

ANTA_TX/RX

ANTA_TX/RX ANTB_RX

ANT

ANTA_TX/RX ANTB_RX

SFP0

SFP0

SFP0

SFP1

SFP1

SFP1

ANTB_RX

Inter-BTS3900E cable


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Chapter 4 BTS3900E Typical Scenarios Section 1 Indoor Coverage Section 2 Outdoor Coverage


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Indoor Coverage—AC Power Input 

O1-O6 Configurations 

Hardware: one AC-powered BTS3900E.



External power input system: 

– 110 V AC single-phase: 2 A to 5 A






Installation: The BTS3900E can be mounted on the wall or H-shaped stand.



Capacity expansion: the space for mounting another BTS3900E can be left on the wall. In addition, a maximum of three BTS3900Es can be mounted on the H-shaped stand. Antenna

AC INPUT


BTS3900E AC

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RF jumper of the BTS3900E Inter-BTS3900E cable Power cable

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Indoor Coverage—AC Power Input 


Hardware: two AC-powered BTS3900Es.










Installation: The BTS3900Es can be mounted on the wall or H-shaped stand.



Capacity expansion: A maximum of three BTS3900Es can be mounted on the Hshaped stand, which facilitates capacity expansion.



The two AC-powered BTS3900Es are interconnected through the SFP ports. Antenna

BTS3900E AC

BTS3900E AC


AC INPUT


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Indoor Coverage—-48 V DC Power Input 


Hardware: one DC-powered BTS3900E.



External power input system: The capacity of the external power input system should range from 5 A to 8 A.



Installation: The BTS3900E can be mounted on the wall or H-shaped stand.



Capacity expansion: the space for mounting another BTS3900E can be left on the wall. In addition, a maximum of three BTS3900Es can be mounted on the H-shaped stand. Antenna

-48V DC


BTS3900E DC

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Indoor Coverage—-48 V DC Power Input 


Hardware: two DC-powered BTS3900Es.




If power supply for the BTS3900Es are independent from each other, the capacity of the external power input system should range from 5 A to 8 A.



If the two BTS3900Es are cascaded, the capacity of the external power input system should range from 10 A to 15 A.



Installation: The BTS3900Es can be mounted on the wall or H-shaped stand.



Capacity expansion: A maximum of three BTS3900Es can be mounted on the Hshaped stand, which facilitates capacity expansion.



The two DC-powered BTS3900Es are interconnected through the SFP ports. Antenna

BTS3900E DC

BTS3900E DC


-48V DC


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Chapter 4 BTS3900E Typical Scenarios Section 1 Indoor Coverage Section 2 Outdoor Coverage


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AC Power Input (No Backup Power Required) 


Hardware: one AC-powered BTS3900E.



External power input system: 2 A to 5 A.



Installation: The BTS3900E can be mounted on the wall or pole.



Capacity expansion: The SPD60D, an AC surge protection box, is used to provide surge protection for AC power. It supports 220 V AC single-phase input.

Antenna

AC INPUT

SPD60D


BTS3900E AC

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AC Power Input (No Backup Power Required) 

S1/1/1-S/6/6/6 Configurations 

Hardware: Three AC-powered BTS3900Es.



External power input system: If power supply of the three BTS3900Es are independent from each other, the capacity of the external power input system should range from 2 A to 5 A.



Installation: The BTS3900Es can be mounted on the wall or pole.



Each of the three AC-powered BTS3900Es should be configured with an AC surge protection box (SPD60D).



The BTS3900E AC(1) works as the basic module. It is connected to another two

extension BTS3900Es through the SFP ports to form a star topology.

AC INPUT

AC INPUT

AC INPUT

SPD60D

Antenna

Antenna

Antenna

BTS3900E AC

BTS3900E AC (1)

BTS3900E AC


SPD60D

SPD60D


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-48 V DC Power Input (No Backup Power Required) 


Hardware: One DC-powered BTS3900E .



The capacity of the external power input system should range from 5 A to 8 A.



Installation: The BTS3900E can be mounted on the wall or pole.

Antenna

-48V DC


BTS3900E DC

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-48 V DC Power Input (No Backup Power Required) 


Hardware: Three DC-powered BTS3900Es.



External power input system: If power supply of the BTS3900Es are independent from each other, the capacity of the external power input system should range from 5 A to 8 A.



Installation: The BTS3900Es can be mounted on the wall or pole.



The BTS3900E DC(1) works as the basic module. It is connected to another two extension BTS3900Es through the SFP ports to form a star topology. Antenna

Antenna

Antenna

BTS3900E DC

BTS3900E DC (1)

BTS3900E DC


-48V DC


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AC Power Input (Backup Power Required) 


Hardware: One DC-powered BTS3900E.



The power cabinet (APM30 or APM30H) is mandatory. It converts the 220 V AC power to -48 V DC power and provides a maximum of 7 U installation space.



The BBC or IBBS200T that is used to install batteries is mandatory.



Installation option:







The BTS3900E can be mounted on the wall or pole.



The APM30 and the BBC or IBBS200T can be installed on the ground in stack mode.



The APM30H and the IBBS200T can be installed on the ground in stack mode.

Requirements for the external power input system: 

110 V AC dual-live-wire: 32 A/2 Pole



220 V AC single-phase: 32 A/1 Pole



220 V AC three-phase: 16-20 A/3 Pole

If the backup power is required to last two, four, or six hours, the 50 Ah battery pack should be configured.


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O1-O6 Configurations

AC INPUT

AC/DC-3U

-48V DC

Antenna Jumper

APM30(H) TM-Space-7U BTS3900E DC

Battery



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Hardware: Three AC-powered BTS3900Es .



The power cabinet (APM30 or APM30H) is mandatory. It converts the 220 V AC power to -48 V DC power and provides a maximum of 7 U installation space.



The BBC or IBBS200T that is used to install batteries is mandatory.



Installation option:





The BTS3900E can be mounted on the wall or pole.



The APM30 and the BBC or IBBS200T can be installed on the ground in stack mode.



The APM30H and the IBBS200T can be installed on the ground in stack mode.

If the backup power is required to last two hours, the 50 Ah battery pack should be configured.



If the backup power is required to last four or six hours, the 92 Ah battery pack should be configured.


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

Requirements for the external power input system: 

110 V AC dual-live-wire: 32 A/2 Pole



220 V AC single-phase: 32 A/1 Pole



220 V AC three-phase: 16-20 A/3 Pole

The BTS3900E AC(1) works as the basic module. It is connected to another two extension BTS3900Es through the SFP ports to form a star topology. AC INPUT AC/DC-3U

-48V DC

APM30(H) TM-Space-7U

Battery

Antenna

Antenna

Antenna

BTS3900E DC

BTS3900E DC (1)

BTS3900E DC

RF jumper of the BTS3900E Inter-BTS3900E cable Power cable HUAWEI TECHNOLOGIES Co., Ltd.

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Chapter 5 BTS3900E Power Supply and Monitoring Solution Section 1 BTS3900E Power Supply Solution Section 2 BTS3900E Monitoring Solution


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BTS3900E Power Supply Solution 

Outdoor scenarios 

AC 220 V power input 

If the backup power supply is not required, you can adopt the outdoor AC surge protection box + AC module solution. The power supply is inputted to the AC module through the surge protection box.



If the backup power supply is required, you can adopt the APM30/APM30H + DC module solution. The power supply is inputted to the DC module after being converted into the 48 V power supply by the APM30/APM30H.



DC-48 V power input 

The backup power supply is not required. Adopt the DC module.


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When the DC power supply is used, the DC BTS3900E module supports the cascading of power supply cables. The following points must be pay attention to : 

When multiple BTS3900E DC modules are cascaded, if a lower-level BTS3900E is

damaged and must be replaced, all the cascaded BTS3900Es must be powered off. In the AC power supply scenario, the quantity of DC power cables from the power supply cabinet (such as the APM) to the small BTSs can be reduced. In the DC power supply scenario, the DCDU and TMC cabinet are not required. 

When multiple BTS3900Es use independent power supplies, if any BTS3900E is

damaged, you can power off the BTS3900E and then replace it with a new one without powering off the other BTS3900Es. Therefore, the services of the other BTS3900Es are not affected. If the major BTS3900E is damaged, the services of the lower-level BTS3900Es in the CPRI cascading are affected, as in the DC power supply cascading scenario.


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When the DC power supply is used, the DC BTS3900E module supports the cascading of power supply cables. The following points must be pay attention to : 

By default, the delivery solution uses cascading power supply. That is, multiple

modules use only one power cable. 

The distance between modules: If the 4 mm^2 shielded power cable is used, the maximum distance is 50 m.


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Indoor scenarios 


If the backup power supply is not required, you can adopt the AC module. The power supply is inputted to the AC module directly.



If the backup power supply is required, you can adopt the PS4890 + DC module solution.

The power supply is inputted to the DC module after being converted into the -48 V power supply by the PS4890. 

DC -48 V power input 

The backup power supply is not required. Adopt the DC module.


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Chapter 5 BTS3900E Power Supply and Monitoring Solution Section 1 BTS3900E Power Supply Solution Section 2 BTS3900E Monitoring Solution


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BTS3900E Monitoring Solution 

Monitoring port 

The monitoring port of BTS3900E is “MON” port at the Bottom panel of the module.



If PMU, APMI, HPMI, and EMU are configured, they can also provide monitoring ports.



The monitoring ports for the BTS3900E (AC) and the BTS3900E (DC) are of the same type.



The BTS3900E provides one RS485 inputs and four dry contact inputs.



The surge protection for the four dry contact inputs are 3000 A in differential mode and 5000 A in common mode respectively.


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Monitoring solution 

The BTS3900E supports four dry contact and one RS48 ports. One monitoring cable cannot be directly connected to the RS485 and dry contact port of the monitored device. Therefore, if you want to monitor the RS485 and dry contact at the same time, the DDF must be configured.




If the AC module is to be adopted, the AC module must support the report function of the mains power-off alarm.



If the power supply system (APM30/H/PS4890) + DC module solution is adopted, the APMI of the APM30/H and the PMU of the PS4890 use the RS485 monitoring interface of the BTS3900E.


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Monitoring principles of the BTS3900E


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Functions of the monitoring system Module PMU

Function   



Communicating with the BTS3900E through the RS232/RS422 serial port . Managing power system and battery charge/discharge. Detecting and reporting water alarms, smoke alarms, door status alarms, and standby Boolean value alarms, and reporting ambient humidity and temperature, battery temperature, and standby analog values. Detecting power distribution and reporting related alarms.

Temperature control unit (DTCU)  APM30: AFMU  APM30H: HEUA

AFMU:  Supplying DC power to the two fans at the top of the cabinet and reporting the alarms of the fans.  Reporting the alarms of the internal ambient temperature sensor, air inlet temperature sensor, and air outlet temperature sensor.  The alarm signals of the AFMU is transmitted to the APMI through the signal transfer cable and then is reported to the main control board. HEUA:  Monitoring the fans and reporting the related alarms

EMU

    

Communicating with the BTS3900E through the RS485 port, through which 2channel RS485 signals are transmitted. Detecting the input voltage. Providing a port for connecting with the 12 V DC or 24 V DC temperature and humidity sensor. Providing ports for input Boolean signals of dry contact type and of OC type. Providing ports for controlling six external Boolean outputs of relay node type.


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Monitoring Configuration 

DEMU configuration. 

Configure DEMU board. 

Choose the site on LMT, right click ”Add or Delete Site Board”→click ” Add or Delete Site Board” →”Site Device Attributes” windows is displayed →Right click a slot→choose DEMU board.



Configure DEMU board parameter configuration enabled. 

Right click DEMU board → Choose “Configure Board Attributes”→ Choose “Configure Site Board Attributes” tab.



Configure ”Associated RXU Board No”. 

Right click DEMU board → Choose “Configure Board Attributes”→ Choose “Configure Board Attributes” tab.


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DEMU common alarm switch configuration. 

Choose the site on LMT, right click “Configure Board Attributes”→click ” Configure Board Attributes” →right click BTS3900E board → choose” configure RXU Attribute “→ Choose “Configure Site Board Attributes” tab.


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DEMU RS485 alarm configuration. 

Choose the site on LMT, right click “Configure Board Attributes”→ click ” Configure Board Attributes” → right click DEMU board → Choose “Configure Site Board Attributes” tab.


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PMU configuration. 

The method to configure APMU board, configure APMU board parameter configuration enabled, Configure ”Associated RXU Board No” are the same as DEMU.



Configure APMU board attributes. 

Choose the site on LMT, right click “Configure Board Attributes”→ click” Configure Board Attributes” → right click APMU board → Choose “Configure Site Board Attributes” tab.



Set APMU Board Type and Set DPSU 0, DPSU 1, and DPSU 2 to Yes or No according to the actual configuration.


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Alarm Disable Configuration 

For the APMI (HERT MPE 301), Boolean signals 1, 2, and 3 are reported through the IN1, IN2, and IN3 ports on the APMI panel.



For the HPMI (HERT MPE 302), Boolean signals 1, 2 and 3 are reported through the IN0,

IN1, and IN2 ports on the HPMI panel. 

Alarm Valid Level Configuration 

Ensure that “Alarm Valid Level Configuration” should be consistent with “Alarm Disable Configuration”.


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“Special Analog Alarm Disable Configuration “and “special Alarm Switch”. 

Set “Special Analog Alarm Disable Configuration” as required. If this parameter is not used, disable it.



Disable the “Environment Temperature 1(Disabled)” and “Preserved Parameter

(Disabled)”.


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Set the battery-related parameters, the parameters related to power supply and battery temperature compensation. 

Set “Battery Cabinet Type” to “Inside Storage Battery”, “Outside Storage Battery”, or “No Storage Battery”.



Set “Charge Coefficient” to “0.15C”.



Set “Battery Cabinet Capacity” according to the actually configured battery capacity.



Set “Temperature foundation for Battery Charging Voltage Compensation” to “Battery 1 Temperature” or “Battery 2 Temperature” according to actual configuration.


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DTCU（AFMU）configuration. 

The method to configure DTCU board, configure DTCU board parameter configuration enabled, Configure ”Associated RXU Board No” are the same as DEMU.



Configure DTCU board attributes. 

Choose the site on LMT, right click “Configure Board Attributes”→ click ” Configure Board Attributes” → right click DEMU board → Choose “Configure Site Board Attributes” tab.



Set “High Temperature Alarm Threshold” and “Low Temperature Alarm Threshold” according to actual requirements.


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Functions and Features 



Functions and Features of the BTS3900E 

Automatic Configuration/Planning Function



Automatic coverage and capacity optimization

Application scenarios of BTS3900E Functions 

The automatic planning/optimization function and the automatic capacity and coverage optimization function of the BTS3900E is recommended only in the rural application scenario. In this scenario, there are few neighboring BTSs or there is no BTS around the BTS3900E. Therefore, the network structure is simple.



The automatic planning/optimization function and the automatic capacity and

coverage optimization function of the BTS3900E are provided in the omni cell with up to two TRXs in the site. That is, the automatic planning/optimization function is applicable to the O1 and O2 configuration only.


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Comparison between the automatic configuration functions of the BTS3900E and BTS3900B. Automatic Planning/Automatic Optimization Function

BTS3900B

BTS3900E

Frequencies (BCCH frequency and TCH frequency)

Supported

Supported

BSIC

Supported

Supported

CGI and RAI

Supported

Not supported

Neighboring cell

Supported

Not supported

Frequency

Not supported

Supported

BSIC

Not supported

Supported

Not supported

Supported

Automatic Planning of Frequency

Automatic Optimization of Frequency Automatic Optimization of Coverage and Capacity


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The automatic configuration/planning function of the BTS3900E consists of the following stages: automatic discovery, automatic software loading, automatic frequency planning/optimization, and configuration delivery. 

Automatic discovery stage 

The automatic discovery stage is the process in which the BTS3900E is powered on and then automatically sets up the connection with the BSC.



Automatic software loading stage 

the BTS3900E automatically detects the new software version during the operation process and then automatically loads and activates the software without manual operation.


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Automatic frequency planning stage 

The automatic frequency planning algorithm is implemented by the M2000. the M2000 automatically assigns the frequencies (including the BCCH frequency and TCH frequency) and BSIC to the BTS3900E. The CGI, RAI, and list of neighboring cells are not automatically planned.



The automatic frequency planning function of the BTS3900E may conflict with the following functions: Concentric cell (including the CoBCCH), Frequency hopping, Antenna hopping, Dual-timeslot expanded cell, Dual-band cell.



The BTS3900E does not support the automatic planning of the frequency band type. That is, when configuring the BTS3900E, you must choose the cell type (in which frequency band: 900/1800/850/1900).


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Functions and Features 

Automatic frequency planning stage 

During the automatic planning progress of the frequency, if several BTS3900Es under one BSC initiate the automatic planning request at the same time, the M2000 controls the request to ensure that only one BTS3900E under a BSC is under processing. That is, the BTS3900Es under the same BSC are processed one by one. BTS3900Es under different

BSCs can be processed at the same time. 

The automatic planning/optimization algorithm is implemented by the M2000. On the BSC or M2000, you can run the related MML commands to configure the switch.



After the automatic planning function is enabled, you cannot manually disable and modified the function during the entire automatic planning process.



To enable the automatic planning function, the maintenance personnel must configure the parameters (such as the BTS name, CGI, network optimization parameters) on the BSC in advance. (The frequencies and BSIC are automatically configured during the automatic planning process.)



Upon receiving the frequencies and BSIC of the BTS3900E, the BSC delivers all the configuration data related to the BTS3900E to the BTS3900E.


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Automatic frequency optimization stage 

After the BTS3900E enters the normal working state, the M2000 monitors the working frequency periodically through the MS measurement report and the uplink interference band measurement function. By comparing with the configured threshold, the M2000 determines whether the frequency must be replaced.



Configuration delivery stage 

The configuration delivery stage is the stage in which the configuration takes effect. If the BTS3900E configuration data is complete (the data configuration is completed in the automatic planning stage and the cell frequency and BSIC are configured), the BSC delivers all the data to the BTS3900E.


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Automatic coverage and capacity optimization 

In the beginning stage of the BTS3900E operation, a single TRX is configured with the transmit power of 30 W. During the BTS3900E operation, the M2000 periodically measures the network traffic. If the M2000 determines that the cell load exceeds the configured threshold, the M2000 delivers a command that requests the BTS3900E to add a TRX, which is configured as TCH TRX. The transmit power of the BCCH is 20 W, and that of the TCH is 10 W. When the BSC determines that the load difference between the inner coverage and outer coverage exceeds the configured threshold, the BSC delivers a command to the BTS3900E to modify the

transmit powers of the BCCH and TCH. Then the BTS3900E modifies the transmit power of the BCCH to 15 W and that of the TCH to 15 W. In this way, the inner coverage is enlarged and the requirement on capacity is met.


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Automatic coverage and capacity optimization 

This function solves the coverage and capacity problems that occur when the service traffic increases slowly, but cannot solve the coverage and capacity problems that occur when the service traffic suddenly surges. When the service traffic suddenly surges, you can use the channel all-rate and half-rate conversion to solve the coverage and capacity problems.



After the capacity and coverage automatic optimization algorithm switch is enabled, if the transmit powers of two TRXs are automatically configured to 20 W and 10 W respectively, the concentric function is not required.



If the configuration is changed from one TRX to two TRXs, the configuration of one TRX cannot be restored. The transmit powers of the two TRXs are automatically configured to 20 W and 10 W respectively or 15 W and 15 W respectively based on the threshold value and actual network conditions.


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This course introduces the following content: 

The BTS3900E hardware structure and principle



The BTS3900E typical networking and configuration



The BTS3900E typical Scenarios



The BTS3900E Power Supply and Monitoring Solution



The BTS3900E New functions and features


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Thank You www.huawei.com

HUAWEI BTS3900E Hardware Structure and Principle-090519-IsSUE1.0-B

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