dccn-cellular telephone and satellite networks and global system for mobile communication

Data Communication and Computer Networks

[EEE 314]

Mubashir Husain RehmaniMubashir Husain Rehmani

Assistant Professor

Department of Electrical Engineering

COMSATS Institute of Information Technology,

Wah Cantt, Pakistan

Cellular Telephone

And Satellite And Satellite

Networks

GSM

Global System for Mobile Global System for Mobile Communication

Cellular System

GSM Architecture

GSM Architecture

GSM Architecture

Overview of Cellular System

GSM Architecture� Mobile Station

� SIM: Subscribe Identity Module� Mobile Equipment (ME)

� Base station Subsystem� Mobile station (MS)� Base Transceiver Station (BTS)Base Transceiver Station (BTS)� Base Station Controllers (BSC)

� Network Switching Subsystem (NSS)� Mobile Switching Center (MSC)� Home Location Register (HLR)� Visitor Location Register (VLR)� Authentication center (AUC)

� Operation Support Subsystem� Operation Maintenance Centers

Mobile Equipment (ME)

BTS

Mobile Switching Center (MSC)

Frequency Reuse

Frequency Reuse

AMPS

AMPS is an analog cellular phone

system using FDMA.

Cellular Bands in AMPS

Second Generation Cellular

Phone System

GSM Bands

GSM is a digital cellular phone system

using TDMA and FDMA.using TDMA and FDMA.

The main goal of third-generation

cellular telephony is to provide

universal personal communication.universal personal communication.

Satellite Networks ‘Orbits’

Satellite Categories

Satellite Orbits Altitude

Geo Synchronous Satellites

GPS

LEO Satellite System