Low-orbit heterogeneous satellite network routing method and system

Abstract

The invention discloses a low-orbit heterogeneous satellite network routing method and system. The method comprises the following steps: initializing a data packet transmitted in a low-orbit heterogeneous satellite network system model; obtaining packet initialization status, circularly traversing the path according to the initial state of the data packet to obtain an optimal routing path; performing congestion by utilizing reinforcement learning to improve the path transmission efficiency, so that the purpose of advantage complementation between heterogeneous satellites is achieved; and meanwhile, taking the balanced packet loss rate and the end-to-end time delay as targets, so that the problem of satellite failure is solved through the mobile Agent; and therefore, routing calculation isfurther assisted, the low communication delay advantage of the low-earth-orbit satellite can be fully utilized, and resource integration among different constellations can be realized, so that the problems of low single-layer satellite communication coverage capability and poor performance are solved, the proposed scheme conforms to the future development trend, the balance of time delay and packet loss performance is remarkably improved, and the method is suitable for increasing communication requirements.

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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