base transceiver station
DESCRIPTION
BTS used in Telecommunication....TRANSCRIPT
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BASE TRANSCEIVER STATION “BTS”
By-Shubham SinghalEC-09
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EVOLIUM A9100
INDOOR-BTS
(MBI5)
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GSM System Architecture
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BTS MBI 5 &BTS MBI3
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A9100 Base Station Architecture (BTS)
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General Architecture of BTSBTS has three levels-:
-Antenna Coupling Level (ANC)
-Transceiver Level (TRX)
-Base Station Control Function (BCF) level
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1. Antenna Coupling Level (ANC)
Stage b/w antenna & TRX Levels
A single module called ANC perform these functions for up to 4 TRXs.
For higher capacity, a combiner stage can be added.
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ANC ARCHITECTURE
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2. TRX(Transceiver Level) Transceiver Equipment…
Used for reception & transmission of signals.
One ARFCN is allotted to one TRX.& each ARFCN is divided in 8 time slots, hence one TRX can provide connection to 8 subscribers at a time…
One BTS= 12 TRX=12 ARFCN=12x8= 96 users….
At a time only 96 users can make calls….
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Base Station Control Function (BCF)
This station is ensured by Station Unit Module (SUMA): central unit of BTS.
Only one SUMA for one BTS….
Generating clocks for all other BTS modules.(synchronization purpose)
e.g. Abis link…..
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MBI5 Module Positions
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ANC Front Panel
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SUMA
STATION UNIT MODULE
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BTS Functions
The primary responsibility of the BTS is to transmit and receive radio signals from a mobile unit over an air interface.
BTS is a plain transceiver which receives information from the MS (mobile station) through the Um air interface and then converts it to a TDM (PCM) based interface, the Abis interface, and sends it towards the BSC.
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Thank You!!!!