This book provides a novel method based on advantages of mobility model of Low Earth Orbit Mobile Satellite System LEO MSS which allows the evaluation of instant of subsequent handover of a MS even if its location is unknown. This method is then utilized to propose two prioritized handover schemes, Pseudo Last Useful Instant PLUI strategy and Dynamic Channel Reservation DCR-like scheme based respectively on LUI and DCR schemes, previously proposed in literature.  The authors also approach a different aspect of handover problem: calls with short durations dropped due to a handover failure. We propose a decision system based on fuzzy logic Rescuing System that allows the rescue of calls with short durations facing a premature at the expense of those lasting for long durations.

Malek Benslama is Professor at the University of Constantine 1 in Algeria. He is a member of the scientific and technical advisory council for the Algerian Space Agency. His research centers on the field of space and communication networks.

Wassila Kiamouche works at the University of Constantine 1 in Algeria.

Hadj Batatia works at IRIT ENSEEIHT in Toulouse, France.