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Hierarchical multi-path routing method for satellite network

A satellite network and multi-path technology, applied in the field of satellite network communication, can solve problems such as aggravated congestion, long delay in information forwarding, failure to meet the system's requirements for data transmission accuracy and real-time performance, and achieve high data delivery rate, The effect of reducing the average delay

Inactive Publication Date: 2017-12-08
XIDIAN UNIV
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Problems solved by technology

[0003] To sum up, the problems existing in the existing technology are: when a large amount of data appears in the current satellite network routing technology, the congestion situation is aggravated, the correct delivery rate of the data drops a lot, and the forwarding delay of information is too large, which cannot meet the requirements of the system. Accuracy and real-time requirements for data transmission

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[0027] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0028] The application principle of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0029] Such as figure 1 As shown, the satellite network-oriented hierarchical multi-path routing method provided by the embodiment of the present invention includes the following steps:

[0030] S101: At the beginning of each time slice, the ground control node calculates the routing information from each node in the LEO to other nodes in the same layer. Send the corresponding routing information to each LEO node, the LEO satellite node builds its own routing table, and the routing t...

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Abstract

The invention belongs to the technical field of satellite network communications and discloses a hierarchical multi-path routing method for a satellite network. A static topology is adopted in a routing mechanism to divide an operation cycle, and the real-time update of the network routing is realized in each time slice; a dual-path routing algorithm is adopted in LEO layer satellites, the satellite nodes in a GEO layer are maintained to the minimum hop count routing of other nodes, a congestion control mechanism and a data distribution method are adopted; and data packets transmitted in a network are transmitted through the LEO layer, and when the network is congested, the data packets with higher delay requirements are transmitted through the GEO layer satellite nodes. The hierarchical multi-path routing algorithm of the invention can achieve higher data delivery rate and reduce the average delay of data transmission when the network is congested; and slightly reduces the data packet delivery rate but increases the transmission delay when a fault occurs to the nodes.

Description

technical field [0001] The invention belongs to the technical field of satellite network communication, and in particular relates to a satellite network-oriented layered multipath routing method. Background technique [0002] With the rapid development of communication technology, multi-type network joint communication has become the development trend of communication technology. The space satellite network has attracted extensive attention because of its wide coverage and not being restricted by the geographical environment. In the development of satellite communication technology, it is more and more difficult for a single-layer satellite network to meet the actual communication needs. Since satellite nodes of different layers have different characteristics, making full use of different layers of satellite networks for joint communication has become the development of future satellite network communication. The research on satellite network routing technology has become a ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/185H04L12/703H04L12/707H04L12/715H04L12/721H04L12/733H04L12/801H04L45/122H04L45/24H04L45/28
CPCH04B7/1851H04L45/04H04L45/12H04L45/14H04L45/20H04L45/24H04L45/28H04L45/38H04L47/12
Inventor 刘立芳郎晓光齐小刚胡绍林陈晓燕
Owner XIDIAN UNIV
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