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REDES DE ACCESO CELULAR

Professors:

Antonio Valdovinos Bardají (toni@unizar.es)

Contents:

The aim of this subject is to show different wireless technologies for accesing networks. By means of OPNET, we have carried out some software-based practices in order to consolidate the student knowledge about GSM and GPRS technologies. We have based these practices on the GSM and GPRS contributed models published at OPNET web site.

Practice 0: Introduction to OPNET

This practice has been thought as an introduction for students that never have used OPNET. We explain all the editors contained in OPNET IT Guru 10.5.

Practice 1: GSM (I) Study of a Mobile Station at IDLE state

We study the power received for different MS trajectories and we analyze the signalling process of attaching a MS to the GSM network. During all simulations the MS is at IDLE state, that is, it does not emit nor receive a call.

Practice 2: GSM (II) Study of a Mobile Station at SWITCH ON state

Similar to the previous one, but now the MS can either emit or receive calls.

 

Practice 3: GSM (III) Study of the Handover process

We analyze the signalling process and the different kinds of Handover.

 

Practice 4: GPRS Study of the main differences between GPS and GPRS

We pay special attention to the Location Update process.

 

 

OPNET Technologies, Inc. is a leading provider of solutions for managing networks and applications. OPNET's best-in-class solutions address application troubleshooting, application monitoring, network monitoring, network configuration management, capacity management, and network simulation. OPNET’s solutions have been operationally proven in thousands of customer environments worldwide, including corporate and government enterprises, government and defense agencies, network service providers, and network equipment manufacturers. For more information about OPNET and its products, visit www.opnet.com.