PERFORMANCE ANALYSIS OF HETEROGENEOUS NETWORKS USING COALITIONAL GAMES

A network which is best suited for a user in a heterogeneous wireless environment is selected by using a Game Theory technique. A statistical game theoretical model is developed by positioning the users randomly, setting-up the base stations of WiMAX and 3G as per standards of ITU and defining the Grade of Service (GoS) for each type of network respectively. Several parameters such as Received signal strength (RSS), Reputation factor, Energy utility, Cost utility and Mobility support are considered. With these parameters the Utility function payoffs are estimated for all the users. With the calculated Payoffs, an algorithm is designed for a best network selection by implementing Coalitional Game Theory principles. Performance estimation is done to demonstrate the Game Theory principles stand and compare with conventional network selection schemes.