Software defined networking-based air and space information network business forwarding method

Abstract

The invention puts forward a software defined networking-based air and space information network business forwarding method. Different types of businesses of an air and space information network are different in service quality requirement for bandwidth, time delay and packet loss rates; a software defined networking concept is introduced, a centralized control mode is adopted, a control plane is separated from a data plane, and a business type-based tunnel control mechanism is built in a core network of an air and space information network topology; flow paths for different types of businesses are calculated in a plurality of tunnels according to reserved bandwidth, priority and tunnel business types Based on uploaded message flow tuple matching information transmitted via a south interface, whether business are forwarded based on grouping or labels can be determined. Based on data plane node stream state feedback information, label paths are re-planned based on priority when network resources are not enough. The forwarding mechanism designed in the invention is flexible and takes a whole picture into consideration, and air and space information network businesses can be delivered efficiently.

Description

technical field [0001] The invention belongs to the technical field of information networks, and in particular relates to a service forwarding method of an aerospace information network based on a software-defined network. Background technique [0002] Glossary: [0003] GEO satellite: Geostationary Orbit geostationary orbit (perfect circular orbit) [0004] MEO Satellite: Middle Earth Orbit Middle Earth Orbit [0005] LEO Satellite: Low Earth Orbit Low Earth Orbit [0006] PBTSP module: Combined with the topology information of the network topology, according to the initially customized tunnel information, and using the Dijkstra algorithm of the shortest path, calculate the label path that meets the bandwidth and priority of the business. [0007] Dijkstra's algorithm: Dijkstra's algorithm refers to the shortest path algorithm from one vertex to the other vertices, and solves the shortest path problem in a directed graph. [0008] The aerospace information network uses ...

AI Technical Summary

Problems solved by technology

[0012] Like the terrestrial network, IP-based next-generation satellite networks also have many shortcomings, such as slow convergence speed of distributed routing algorithms, lack of global vision, complex network configuration, inability to perform flexible configuration updates and provide fine-grained network management services

In addition, the characteristics of the satellite network also bring more challenges to network performance. For example, the dynamic topology of the network makes the routing algorithm more unstable, and the long satellite-ground distance and the data interaction method of satellite overhead transmission make the global network routing Updates take longer

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