LEO satellite network optimum profit routing method based on cooperative game

Abstract

The invention relates to an LEO satellite network optimum profit routing method based on a cooperative game. The method comprises the steps of establishing a grid-shaped LEO satellite communication system of an iridium satellite similar constellation; regarding a plurality of LEO satellite relay nodes on a routing path from a source satellite node to a destination satellite node as a cooperative coalition according to a periodic motion law of an LEO satellite constellation and a grid-shaped multipath routing attribute and defining a coalition profit function through utilization of network performance indexes such as throughput, delay and a packet loss; and allocating coalition cooperative profits through adoption of a Shapley value allocation mechanism based on a thought of a coalitional game in the cooperative game, wherein a routing coalition with the highest cooperative profit is the optimum performance routing path from the source satellite node to the destination satellite node inthe current LEO satellite network. According to the method, traffic loads of hot nodes can be effectively balanced, a resource utilization rate of the satellite network is improved, the data packet network delay is reduced, and the guaranteed QoS routing capability is provided for a data packet.

Description

technical field [0001] The invention belongs to the field of satellite communication, and in particular relates to a cooperative game-based LEO satellite network optimal revenue routing method. Background technique [0002] With the development of satellite technology, satellite mobile communication is more and more closely connected with people's life, and its status is becoming more and more important. Compared with the traditional terrestrial mobile communication system, the satellite mobile communication system is characterized by the ability to quickly achieve large-area coverage without the need for a large number of ground supporting infrastructure. And other communication aspects are more unique advantages. [0003] Communication satellites can be divided into low-orbit LEO satellites, medium-orbit MEO satellites and geosynchronous orbit GEO satellites according to their orbital heights. GEO satellites are more suitable for broadcasting services and high data rate ...

AI Technical Summary

Problems solved by technology

However, at present, there is no standardized protocol system or technical framework with universal adaptability for LEO satellite network routing strategy

Various existing solutions are not adaptable enough, and do not fully consider network application scenarios and unbalanced traffic distribution. They have strict requirements on the computing power, storage capacity, and signal receiving and transmitting capabilities of the LEO satellite on-board system, and have strict requirements on the reliability of satellite nodes. , Network invulnerability has oversimplified and neglected or optimistic scenario assumptions

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