APPLICATION OF DYNAMIC CHANNEL ALLOCATION STRATEGIES TO THE GSM CELLULAR NETWORK

In this paper, we refer to the implementation and the performance of a specific class of dynamic carrier allocation (DCA) strategies which i s suitable for being introduced in the pan-European Global System far Mobile communications (GSM) cellular network, One of the main concerns of this work is to verify if and to what extent strategies belonging to this class can offer better performance than fixed channel allocati on (FCA) in realistic traffic and propagation conditions, The impact o f the introduction in a real network of two of the more promising DCA strategies in tile considered class is assessed, In particular, soluti ons are presented concerning the signaling exchanges entailed by the i mplementation of each of tile considered DCA strategies, A performance evaluation of a realistic cellular network exploiting the above-menti oned DCA strategies is carried out, taking into account ail of the mai n GSM transmission and network aspects. The simulations have been perf ormed by considering a realistic cell layout: corresponding to the urb an area of Rome, its realistic propagation environment, and st user mo bility model based on the building percentages in such an area, The re sults of the performance evaluation show that, by carefully choosing t he values of the parameters characterizing each of the considered DCA strategies, a conspicuous increase in the number of users supported by the cellular network fare be achieved.