Uncertainty in cellular fuzzy handover

Abstract The rapid growth of mobile subscribers throughout the world has generated an unexpected demand for nomadic services. In order to answer such demands an increase in spectral efficiency must be reached. Considering current trends in reducing cell size in order to achieve a higher spectral efficiency which on the other hand causes an increase in the number of handovers executed by the system, it is of major importance to improve the success rate of the current handover algorithms, because an excessive number of handovers adversely impact the signaling load as well as subscriber annoyance. Therefore, effort needs to be devoted to finding optimum handoff strategies. In this paper, the impact of the novel fuzzy reasoning handoff strategy is assessed. The results obtained from the proposed fuzzy model are compared with those from a classical model with a hysteresis strategy using proposed entropy criteria.

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