Abstract: Low earth orbit(LEO) satellite network has a great advantage for global mobile communications. Handover scheme is very important to control end-to-end communication delay and improve duality of service and utilization of LEO satellite network link. Ground-satellite link handover and recomputing routes problems were analysed in detail.Then,a link handover algorithm for LEO satellite mobile communication network was proposed. Simulation results show that the satellite link handover algorithm proposed has less end-to-end delay, and is stabler and more customizablc.

Key words: Satellite network, Satellite handover, Rerouting, Inter-satellite link