A Handover Strategy Based on User Dynamic Preference for LEO Satellite

In the existing LEO satellite handover strategy, most of the indicators of handover decision consider satellite network parameters rather than the actual requirements of user services for handover indexes. In this paper, aiming at the issue of aircraft handover under the high coverage of LEO satellites, a handover strategy based on user dynamic preferences is proposed. By constructing a dynamic preference matrix, the set of satellites to be switched is selected, and the handover time is reserved. The decision matrix sorting algorithm is used to find the best handover satellite to avoid the influence of weight factors. So as to provide users with optimal handover strategies for different task requirements in different time periods. The simulation results show that this strategy can accurately make handover decisions, improve the stability of handover decisions, reduce the number of handovers, reduce network congestion rates, and ensure service QoS requirements.