HANDOVER MANAGEMENT BASED ON FUZZY LOGIC DECISION FOR LEO SATELLITE NETWORKS

摘要

Due to the property of low propagation delay, LEO (Leo Earth Orbit) satellite network is an indispensable solution for providing a global coverage and multimedia communication. However, since the LEO satellites move very fast in orbits, to offer a smooth handover is regarded as the most significant service feature. In this paper, an effective handover management is proposed. The proposed scheme is based on fuzzy logic decision to efficiently determine handover and considers three important parameters, including blocking rate, dropping rate, and bandwidth utilization. From the simulation results, this scheme can achieve the higher bandwidth utilization, the lower new call blocking rate, and the lower handover call dropping rate.