Fuzzy logic based handoff in wireless networks

In indoor wireless communication networks, mobile computing devices need to be handed off to different base stations based on certain criteria. In this paper, a fuzzy logic based scheme for selection of base station at the time of handoff is presented. The scheme considers three criteria, namely, received power levels, user population and used bandwidth of each base station to arrive at a fuzzy handoff decision regarding handoff to any particular base station. For comparison, the conventional power level based handoff and user population based handoff schemes are also considered. It is shown through simulation that the fuzzy logic based scheme results in uniform user load for the base stations and optimizes the number of base station switchings.