QoS of dynamic radio resource management policies in a GPRS network

摘要

This paper introduces a GPRS-like cellular network simulator, where mobile terminals move, initiate and terminate their communications. This tool aims at evaluating the major QoS parameters in realistic propagation conditions and for different resource allocation policies. Our objectives on developing such simulator are first to compare some of existing channel management methods and second, to validate a new optimal scheme of allocating the physical channels to mobile users supporting multimedia applications. Our discrete-event simulation tool takes into account both the time variation of the system and its spatial dimension relating to the users movement and its effect on the signal propagation and the radio link. The system taken into account in this paper is a GPRS-like (i.e. TDMA) one, i.e. voice and data are integrated over Time Division Multiple Access wireless cellular network. In this paper, our scenario has considered three traffic classes : best-effort, medium and premium.