A Network Coding-Based Multipath Routing Method for Two-Layer Satellite Networks

Abstract

The invention discloses a double-layer satellite network multi-path routing method based on network coding, comprising: constructing a satellite network topology with a double-layer satellite constellation, determining the satellite network structure according to the relationship between the number of satellites and the capacity of the satellite network; The network routing setting is carried out according to the status of the network, and the availability weight of the inter-satellite link and the satellite nodes along the route is calculated between the source node and the destination node, and the local network routing status in response to the routing request is obtained accordingly; combined with network coding and multiple The method of routing optimizes the performance of the satellite communication network, and establishes an effective link in the network that meets the business requirements; according to the congestion status of the satellite network, the availability weight of each satellite node and its inter-satellite link in the network, the network’s network capacity is improved. throughput. The MEO / LEO double-layer satellite network topology adopted in this method provides extensive coverage characteristics for ground users, thereby improving the data transmission performance of the satellite network.

Description

technical field [0001] The invention relates to the field of satellite network communication, in particular to a network coding-based double-layer satellite network multipath routing method. Background technique [0002] The satellite communication network provides diversified data transmission services for users scattered around the world, and it has great potential in the field of global communication services. The satellite communication network not only has good global coverage, but also can provide efficient and real-time data communication services. Therefore, the application of satellite communication network is of great significance to areas with inaccessible and harsh geographical environments. [0003] Based on the broad application prospects of satellite communication networks, the network routing algorithm designed for satellite communication networks with high performance and quality of service is an important topic in the field of satellite network communicatio...

AI Technical Summary

Problems solved by technology

[0004] The topology of the satellite network determines the number of inter-satellite links and the transmission path of data packets in the satellite network. At present, the single-layer satellite network composed of satellite nodes on a single orbit has a high probability of network blocking, poor invulnerability, and node Time delay accumulation and other factors have made it difficult to meet the growing demand for information services

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