Distributed routing management method for super-large-scale low-orbit satellite constellation

Abstract

The invention discloses a distributed routing management method for a super-large-scale low-orbit satellite constellation. The method comprises the following steps: firstly, building a satellite scene; the method comprises the following steps: calculating a topological structure of a satellite network according to Walker constellation configuration, dividing a length interval of an inter-satellite link by adopting a quantization mode, and establishing a lateral forwarding priority comparison table according to a lateral length change rule; a two-dimensional grid transmission path is adopted, and a path with the shortest transmission distance is found out from the minimum hop count path set; determining a forwarding direction of the data packet according to the target address and the source node address; when a node satellite fault is detected, fault information is flooded, and the satellite node completes construction of a fault region according to the received information and processes a data packet forwarded to the node; the invention provides a fault management strategy, when a satellite node has a fault, the fault can be quickly responded, a fault region can be formed, a coping strategy can be timely made, inter-satellite data transmission can be realized with relatively low operation complexity, and meanwhile, the robustness and reliability of network service are ensured.

Description

technical field [0001] The invention relates to the technical field of inter-satellite routing management, and mainly relates to a distributed routing management method for ultra-large-scale low-orbit satellite constellations. Background technique [0002] Compared with the terrestrial network, the satellite network has the advantages of wide coverage, long transmission distance and strong flexibility. At present, the ground network is developing rapidly, but there are still some problems: for example, there are no good communication facilities in remote mountainous areas due to the high cost of base station construction; Damage to communication facilities caused by natural disasters and other circumstances makes it impossible to communicate with the outside world. Satellite communication, especially satellite communication network, is not affected by natural disasters on the ground due to its wide coverage. It can be used as the backbone network in the above regions to com...

AI Technical Summary

Problems solved by technology

[0007] To sum up, the existing routing methods have the following problems: (1) The topology structure changes frequently; (2) The equipment resources on the star are limited, so the complexity of the routing method used should not be too high; (3) The constellation scale is generally large , if there is routing flooding, etc., the signaling overhead used for routing will be more complicated

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