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LEO satellite network reliability routing method based on QoS guarantee

A satellite network and reliability technology, applied in the field of LEO satellite communication, can solve problems such as unbalanced load on the satellite, frequent dynamic changes in network topology, and prone to failure of satellite nodes and links

Active Publication Date: 2021-03-26
UNIV OF ELECTRONICS SCI & TECH OF CHINA +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, because the environment of the outer space satellite network is relatively harsh and complex, there are situations such as frequent dynamic changes in network topology, unbalanced load on the satellite, electromagnetic interference, and prone to failure of satellite nodes and links. , in order to provide reliable and effective communication services to ground users and obtain a better user experience, it is necessary to select an optimal routing path to complete the efficient transmission of data packets between source and destination satellites

Method used

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  • LEO satellite network reliability routing method based on QoS guarantee
  • LEO satellite network reliability routing method based on QoS guarantee
  • LEO satellite network reliability routing method based on QoS guarantee

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Embodiment Construction

[0088] An exemplary embodiment of the present invention will now be described in detail with reference to the drawings. It should be understood that the embodiments shown and described in the drawings are merely exemplary, intended to illustrate the principles and spirit of the invention, and is not limited to the scope of the invention.

[0089] Prior to describing the specific embodiments of the present invention, some of the abbreviations of the present invention are first explained to better understand the present invention:

[0090] Leo: Low Earth Orbit, Low Rail Satellite;

[0091] QoS: Quality Of Service, Quality of Service

[0092] ISL: Inter-Satellite Link, Star link;

[0093] S_LSA: Satellite Link State Advertisement, Satellite Link Status Report;

[0094] P_LSA: Plane Link State Advertisement, Track Side Link Status Report;

[0095] NSB: NetWork State Base, full network status information library;

[0096] Larac: Lagrange Relaxation based Aggregated COST, Lagrangian rel...

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Abstract

The invention discloses an LEO satellite network reliability routing method based on QoS guarantee, and the method comprises the following steps: guiding flow of a hot spot area to transfer to a non-hot spot area, designing strict QoS constraints while selecting a route to complete search of an inter-satellite routing path so as to ensure that the found path has the optimal service quality; and the congestion probability of the satellites passing through the light-weight load task as much as possible is reduced, so that the packet loss rate is reduced, and the reliability of a routing forwarding path is improved.

Description

Technical field [0001] The present invention belongs to the field of LEO satellite communication technology, and specifically, it is directed to a design of a QoS protection based LEO satellite network reliability routing method. Background technique [0002] With the rapid development of space information technology, the Low or Low Earth Orbit satellite communication system plays an increasingly important role in global communication, navigation positioning, meteorological prediction, disaster monitoring and military applications, and as LEO Satellite Communication Network Key Technologies is a star routing algorithm that enhances the core factors of the entire satellite communication network performance. However, due to the environment in which the outer space satellite network is more bad, it is more complicated, there is a case in which the network topology is frequent, the load imbalance, electromagnetic interference, satellite node and chain can be faulty. In order to ensur...

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Application Information

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IPC IPC(8): H04W16/22H04W28/02H04W40/02H04W40/12H04W84/06
CPCH04W16/22H04W28/0268H04W28/0289H04W40/02H04W40/12H04W84/06
Inventor 王文滔杨凡德廖丹简平李航李慧
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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