Training BTS NOKIA

CONSTRUCTION AND MODULES

Prepared by: Phan Quốc Thăng

Base on BTS Product Description

Contents

• Introduction about GSM system and BTS Function.

• Overview about BTS NOKIA (Flexi EDGE BTS).

– Outstanding features of Flexi EDGE BTS

– Somes main Features of Flexi EDGE BTS

– Các kết nối cáp RF của 1 số cấu hình

– Guideline to Commissioning

GSM SYSTEM

PSTN ISDN

PSPDN

Um Interface

BTS

BTS

BTS

BTS

OMC (NOC and O&M)

HLR/AUC/EIR

BSC

MSC/VLR

SMC/VM

A Interface

MAP

MAP

TUP,ISUPMS

MS

MS

Features of Flexi EDGE BTS

– Interface between MS and BSC

– Transmission function, which manage transfer of traffic and control data between BTS and BSC.

– O&M Functions, which supervise the operation of the BTS.

– External Alarm collection.

– Measure Uplink and downlink signal.

….

SOME KINDS OF NOKIA BTS

Some Families of NOKIA BTS: Talk Family

Flexitalk (900/1800 2TRX) Citytalk (900/1800 6TRX) Intratalk (900/1800 6TRX)• Nokia named Intratalk is Indoor and Citytalk is Outdoor.1. Flexitalk GSM 900/1800 BTS 2TRX.

– Flexitalk is MiniBTS located insite the house, office.. where another Network can’t cover it. It have only 2 TRX, using twisted cable or coaxial cable (2Mbit/s).

2. Citytalk (900/1800 6TRX) – Called Indoor BTS, it can be able to use any where. Maximum

capacity is 6TRX. All kind of transmission is supported.3. Intratalk (900/1800 6TRX)

– Called outdoor BTS, used for remote area or important position in the network

Some Families of NOKIA BTS: Talk Family

Flexitalk (900/1800 2TRX) Citytalk (900/1800 6TRX) Intratalk (900/1800 6TRX)• Nokia named Intratalk is Indoor and Citytalk is Outdoor.1. Flexitalk GSM 900/1800 BTS 2TRX.

– Flexitalk is MiniBTS located insite the house, office.. where another Network can’t cover it. It have only 2 TRX, using twisted cable or coaxial cable (2Mbit/s).

2. Citytalk (900/1800 6TRX) – Called Indoor BTS, it can be able to use any where. Maximum

capacity is 6TRX. All kind of transmission is supported.3. Intratalk (900/1800 6TRX)

– Called outdoor BTS, used for remote area or important position in the network

SOME KINDS OF NOKIA BTS

SOME KINDS OF NOKIA BTS

Insite: intergrated only one TRX, and Antenna is intergrated insite BTS. often used to put in the working room, the basement of the buildings.

Ultrasite: Maximum capacity is 12TRX. Support GPRS, EDGE

NOKIA FLEXI EDGE BTS

• Features

– FLEXI EDGE BTS is a Modular base station for GSM/EDGE capacity and coverage.

– Easy to install, reduce..

– Taking the temparature from -33°C …+50 °C

– Support up to 24 TRX (12 hual TRXs)

– Support Double Power TRX

CONSTRUCTION OF FLEXI BTS

• System module (ESMA)

• Dual TRX module (EXxA)

• Dual duplexer module (ERxA)

• Transmission module

• Power module

• Wideband combiner (EWxA)

EXTA – GSM800 EXGA – GSM900 EXDA – GSM1800EXPA – GSM1900

EDGE SYSTEM MODULE (ESMA)

• Main features:– Module for BTS common functionalities and internal/external

connectionsSupports up to 6 DTRX modules (up to 12TRX)

– 5 main functions of the module:

• BTS O&M: SW downloading and storing (2 * BTS SW), configuration management, reference clock and alarms

• BB switching: communication between modules via Ethernet switch

• BTS power distribution: single point for power intake and power distribution to all modules

• The BTS Software is stored in ESMA.• Connect to BSC by Abis interface

PDU (power distribution unit) 48V intake

Site support system, MIBBU alarms (6), Aux equipment Q1, Local Management Port (LMP)

6x Ethernet to DTRX or RTC

PDU (power distribution unit) 6x48V to other modules

Out

1xEAC (External Alarm & Control)12x alarm inputs+6x control outputs

In Synchronization

EDGE SYSTEM MODULE (ESMA)

EDGE DUAL TRX MODULE (EXxA)

The Dual TRX Module is a two-carrier TRX.Support Double Power TRX (DPTRX).RF part with 2 independent transmit (TX) chains and 4 receive

(RX) chainsWhen using 2 TRX we have to use EWxA to combine 2

transceivers in one.• DTRX connected to system module via single Gigabit Ethernet

interface• Power feed from system module via single cable

EDGE DUAL TRX MODULE (EXxA)

4xRX TX 2

0-2xWideband combiners

1xBus

1xDTRX-DDU 1xPowerPhase feedback from WBC (DPTRX)

TX 1

DUAL DUPLEXER MODULE (ERxA)

• Dual duplexer (DDU) module together with Dual TRX create a logical Sector module

– Min 1 DDU per sector is needed – DDU is attached to DTRX module

• DDU provides – duplex functionality to combine TX and RX signals to same antenna feeder – multicoupling– 2 antenna connections (for 1 or 2 sectors)

• 2 TX inputs and 4+4 RX outputs (4 RX from antenna 1 and 4 RX from antenna 2)

• DDU contains – 2 duplex filter– 2 Low Noise Amplifiers (LNAs) with high/low gain support for RX signal– 2 Bias-Ts with VSWR measurement functionality

• TRX loop is controlled through the DDU – Common TRX loop for all TRXs in same sector– Loop can be performed from either TX to any of 8 RX outputs (only 1 TX and 1

RX can be simultaneously tested

DUAL DUPLEXER MODULE (ERxA)

WIDEBAND COMBINER (EWxA)

• TxA, TxB use to combine 2 TxA and TxB of EXxA.

• Out is connected to ERxA (after combining.

• DP When use DPTRX. – EWGA 850/900 MHz Bands

– EWDA 1800 MHz Band

The connection from ERxA to EXxA

Cable Connections

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2 TRX/1Sector

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4 TRX/1Sector

Cable Connections

COMMISSIONING STEPSStep 1

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Step 2

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Step 3

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Step 4

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Step 5

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Step 6

COMMISSIONING STEPS

Step 7 (1.5 and 2.7)

QUÁ TRÌNH COMMISSIONING

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Step 8

COMMISSIONING STEPS

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Step 9

QUÁ TRÌNH COMMISSIONING

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Step 10

COMMISSIONING STEPS

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Step 11

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Step 12

COMMISSIONING STEPS

Thanks for your attention.