Location Update Strategy Based on Time-distance for LEO Satellite Network

This paper proposes a location update strategy based on time-distance for satellite networks.Different from other location update strategies,the proposed update strategy adopts different location update radiuses for the high-speed and low-speed terminals,and the location update radius varies in accordance with the speed and traffic change of terminals.The simulation indicates that the proposed location-area update strategy could obviously reduce the location management costs and save system resource in the situation of large-amount mobile users and large-quantity burst traffic.