Multi-attribute Decision Satellite Access Algorithm Based on User Priority and Business Requirements

In the satellite ground fusion communication system, the rapid relative movement between low earth orbit (LEO) satellites and ground terminals can lead to frequent switching between the satellite and the ground. Choosing different satellites for access can also have an impact on access performance. Therefore, this paper proposes a multi-attribute decision satellite access algorithm in the scenario of multi-satellite coverage of LEO satellites in the satellite ground fusion architecture. Real time network quality and wireless channel quality are considered as decision attributes for business requirements, and an improved secondary decision algorithm based on an analytic hierarchy process algorithm (AHP) and technique for order preference by similarity to an ideal solution algorithm (TOPSIS) is used for satellite decision-making, reducing call blocking rate and forced interruption rate. Furthermore, considering the priority of switching users further reduces the probability of switching failure and improves the performance of satellite access.