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A Routing Method for Constrained Satellite Networks

A technology of limited satellites and satellites, applied in the field of satellite communications, can solve problems such as node failure, and achieve the effects of prolonging the lifetime, efficient transmission, strong adaptability and robustness

Active Publication Date: 2017-11-24
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these existing methods are competent for routing tasks in general satellite networks, they are completely based on the same network topology assumptions, that is, (1) the dynamic changes of the satellite network topology are predictable; The probability of link interruption and node failure is so low that it can be ignored, so there are relatively large limitations in the scope of application. For the preset proportion (or preset number) of satellite node failures, frequent interruptions of inter-satellite links, etc. The problem of satellite networking under harsh network environment is powerless

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  • A Routing Method for Constrained Satellite Networks
  • A Routing Method for Constrained Satellite Networks
  • A Routing Method for Constrained Satellite Networks

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Embodiment Construction

[0031] Below, combined with the instruction manual figure 1 The present invention is further described.

[0032] Restricted satellite network refers to a satellite network in which a preset ratio (for example, more than 30%) or a preset number (for example, more than 20) of satellite nodes cannot work normally; or, due to equipment failure, channel change, malicious damage, etc., Satellite network with frequent interruption of inter-satellite link.

[0033] According to an embodiment of the present invention, the specific implementation is as follows:

[0034] 1. Overall scheme of routing method for restricted satellite network

[0035] Each satellite node provides data relay services for other nodes in a "store-carry-forward" manner, and uses the communication opportunities formed by the periodic movement of intermediate satellite nodes to realize the hop-by-hop transmission of data packets between source / destination nodes. specifically:

[0036] (1) When the source satel...

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Abstract

The invention discloses a routing method suitable for limited satellite network. Each satellite node using this method provides data relay services for other satellite nodes in the way of "storage-carry-forwarding". When the preset ratio (or preset number) of satellite nodes fails and the inter-satellite link is frequently interrupted In harsh network environments such as the Internet, the communication opportunities formed by the periodic movement of intermediate satellite nodes can be used to realize the hop-by-hop transmission of data packets between source / destination satellite nodes.

Description

technical field [0001] The invention relates to the field of satellite communication, in particular to a satellite network routing method under harsh environments such as failure of a preset ratio (or preset number) of satellite nodes, frequent interruption of inter-satellite links, and the like. Background technique [0002] As an important part of the national information infrastructure, the satellite network undertakes communication tasks such as emergency relief and scientific exploration, and has great application prospects in the civilian and military fields. [0003] Routing technology plays an important role in satellite networking, which directly determines the transmission capacity, communication efficiency and service quality of satellite networks. In order to solve the satellite network routing problem, researchers at home and abroad have proposed a series of technical solutions, including explicit multi-path routing algorithm (Compact Explicit Multi-path Routing...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W40/12H04W40/24H04W84/06
CPCY02D30/70
Inventor 卢宁宁
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP