Satellite network multi-service QoS routing method based on regional division

Abstract

The invention discloses a satellite network multi-service QoS routing method based on regional division, and mainly solves the problems of congestion of part of satellite-ground and inter-satellite links and overhigh calculation complexity caused by funnel-shaped traffic generated when services pass through a gateway station nearby in the prior art. According to the implementation scheme, an LEO satellite network is divided into a light load area and a heavy load area; a control center calculates a light load area satellite node routing path in an off-line mode and uploads the path to a static routing table; heavy-load area satellites calculate a dynamic routing path table according to business types and requirements by adopting a routing algorithm based on a link state; the source satellite node constructs a data packet according to the routing path table; and the data packet is forwarded to the ground gateway station by the satellite network in a source routing forwarding mode. According to the method, the on-satellite calculation complexity is effectively reduced, the congestion problem caused by funnel-shaped traffic is solved, a good QoS guarantee is provided for different types of services, and the method can be used for realizing satellite network traffic load balancing.

Description

technical field [0001] The invention belongs to the technical field of satellite communication, and in particular relates to a satellite network route selection method, which can be used to realize satellite network flow load balance and improve the QoS guarantee capability of the satellite network for different services. Background technique [0002] Satellite communication has the advantages of wide coverage, large communication capacity, good communication stability, and easy global coverage. It is considered to be one of the hottest technologies in the future 6G communication era, and it has broad application prospects. In 1998, after the first real satellite network Iridium communication system with on-board switching and on-board processing capabilities was put into operation, the research on satellite networks by scientists all over the world gradually entered a climax. [0003] Satellite network refers to a network that connects multiple satellites and ground gateway...

AI Technical Summary

Problems solved by technology

Existing solutions are not very adaptable, do not fully consider network application scenarios and unbalanced traffic distribution, and do not consider the funnel-shaped traffic problem caused by satellite network traffic passing through the gateway station overhead satellite to the nearest ground

Although many existing technical solutions solve the optimal solution of the NP-complete problem caused by multiple QoS constraints by introducing heuristic algorithms such as ant colony algorithm and genetic algorithm to obtain the optimal routing path, all of them require multiple complex Iterative calculation, which has strict requirements on the computing power and storage capacity of the LEO satellite on-board system, and the overhead of routing signaling is large

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