A low-orbit communication satellite constellation inter-satellite routing method and device

Abstract

The invention relates to the technical field of low-orbit satellites, in particular to a method and device for inter-satellite routing selection of low-orbit communication satellite constellations; through the method, the constellation network only needs to call the routing table according to time fragments, effectively reducing ground operation and control The workload of the system; through the fine division of time slices, optimized routing can be obtained; through the division of time slices at equal time intervals, the requirements for the performance of satellite equipment are effectively reduced, and at the same time, the high-speed movement of satellites is avoided. Frequent signaling interaction simplifies the routing decision-making process; the constellation network is coupled with the ground network, fully considering the service area division and relay of feeder links between gateway stations for low-orbit constellation satellites, and has routing calculation complexity Low, fast routing decision-making, low performance requirements for satellite equipment, etc., have obvious advantages in adaptability and feasibility, and are very suitable for the selection process of inter-satellite routing in low-orbit satellite constellations.

Description

technical field [0001] The invention relates to the technical field of routing strategies for low-orbit satellites, in particular to a method and device for inter-satellite routing selection of low-orbit communication satellite constellations. Background technique [0002] With the rapid development of Internet applications, the demand for Internet access services has increased dramatically. Compared with the traditional ground communication system, the low-orbit satellite constellation communication system has the advantages of wide coverage, little influence by terrain and terrain, and strong anti-destruction capability. At present, the low-orbit satellite constellation communication system is divided into satellite communication constellations with inter-satellite links and communication satellite constellations without inter-satellite links according to whether the satellites have routing capabilities. For a low-orbit satellite constellation system without an inter-sate...

AI Technical Summary

Problems solved by technology

However, the problem brought about by the decoupling topology of the constellation network and the ground network is that it is difficult to determine the destination node of the reverse link (from the user to the gateway station). The service area division of gateway stations and the relay switching of satellite feeder links between adjacent gateway stations, if only considering the topology changes of the satellite constellation network, cannot truly reflect the entire network topology (inter-satellite and satellite-ground) structure and the actual connectivity status of the link

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