A low-orbit heterogeneous satellite network routing method and system

Abstract

The invention discloses a low-orbit heterogeneous satellite network routing method and system. By initializing the data packets transmitted in the low-orbit heterogeneous satellite network system model, the initialization state of the data packet is obtained, and the path is obtained by cyclically traversing the initial state of the data packet. The optimal routing path uses reinforcement learning to reduce congestion, improve path transmission efficiency, and achieve the purpose of complementary advantages between heterogeneous satellites. At the same time, it aims to balance the packet loss rate and end-to-end delay, and solve satellite failure problems through mobile agents , so as to further assist routing calculations, the heterogeneous network of low-orbit satellites can not only make full use of the low communication delay advantages of low-orbit satellites, but also realize resource integration between different constellations, so as to overcome the insufficient coverage of single-layer satellite communication and various The problem of poor performance, the proposed scheme is in line with the future development trend, and the balance of delay and packet loss performance has been significantly improved, which is suitable for the growing communication needs.

Description

technical field [0001] The invention relates to the field of wireless communication, and relates to a low-orbit satellite heterogeneous routing scheme, in particular to a low-orbit heterogeneous satellite network routing method and system. Background technique [0002] At present, with the rapid growth and diversification of communication needs, the terrestrial network, which only accounts for 2% of the earth's surface, is far from being able to meet the needs. Due to the difficulty of laying and the consideration of cost value, ground communication still has communication blind spots in emergency communication, military applications, and many other scenarios. Satellite communication can fully supplement ground communication in terms of coverage, communication distance, communication quality, communication effect, signal configuration and business type. [0003] From the 1990s to the present, satellite communications have developed extremely rapidly. Among them, low-orbit ...

AI Technical Summary

Problems solved by technology

At present, the existing heterogeneous solutions generally focus on multi-type orbit heterogeneous networks, that is, the joint heterogeneous network of low-orbit and high-orbit satellites, but the research on heterogeneous networks of low-orbit satellites is almost zero; there are still many problems in the realization of heterogeneous networks. , the most typical of which is heterogeneous routing. Heterogeneous networks are prone to increase the packet loss rate. The current routing method cannot meet the requirements of more efficient communication.

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