Satellite network reliable routing method based on virtual nodes

A virtual node and routing technology, which is applied in network planning, radio transmission system, electrical components, etc., can solve the problem of the complexity of satellite node routing information acquisition, achieve good routing convergence, good scalability, and reduce the waste of available bandwidth Effect
CN101459946AInactive Publication Date: 2009-06-17NANJING UNIV OF POSTS & TELECOMM
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
NANJING UNIV OF POSTS & TELECOMM
Publication Date
2009-06-17
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a satellite network reliable routing method on the basis of virtual nodes, which is applied in single-layer routing protocols under similar polar orbit constellation models and is mainly used to solve the complexity problem that a satellite node obtains routing information. The method comprises: marking a satellite by an address of a ground logic area which is covered by the satellite, namely, being endowed with a specific role, knowing the communication conditions of surrounding virtual nodes through sending a link probe packet, generating a route updating information packet under the virtual nodes, setting flooding hop number as N, then, sending to link interfaces which satisfy the demands, receiving satellite virtual nodes of the route updating information packet, correcting parameters in the route updating information packet, extracting reached hop number J of information of each route prefix of the route updating information packet, and obtaining the theoretical shortest path length L from the satellite virtual nodes to the target ground logic area through a computational method of the ideal shortest path length, wherein the routing method shields the dynamictopology characteristics of internet, improves the routing astringency, and lowers the time delay of data packet transfer.
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Description

technical field

[0001] The invention is a dynamic routing method suitable for a satellite network, which is mainly used to solve the complexity problem of satellite nodes obtaining routing information under the dynamic topological structure of the satellite network, and belongs to the field of network protocol design. Background technique

[0002] In recent years, due to its important strategic position, the satellite network has gradually become a research hotspot in the world's space powers. The satellite network connects satellites of different orbits, types and performances, space vehicles and other space entities and ground facilities through satellite interstellar and satellite-ground communication links, forming an integrated communication network that can cover the whole world. The principle of effective comprehensive utilization, interconnection, and organically constituted intelligent system. The satellite network has independent information acquisition, storage, ...

Claims

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