Performance of fuzzy algorithm based handover process for personal communication systems

Recent advances in radio systems technology have led to the development of wireless systems which could provide universal access to the users. To support higher user density, high user mobility, and enhanced network capacity, extensive frequency reuse in microcellular systems becomes necessary. Small cell radii result in more frequent handovers which in general overload other vital functions of the network control. This paper presents a new fuzzy logic based handover algorithm which results in sharp reduction in the number of handovers from those when a conventional algorithm is used. Furthermore, the proposed handover decision may be extended to include multiple performance criteria in order to make the handover process more robust while minimizing the number of unnecessary handovers.