Reliable Routing Method of Leo Satellite Network Based on Qos Guarantee

A satellite network and reliability technology, applied in the field of LEO satellite communication, can solve the problems of easy failure of satellite nodes and links, frequent and dynamic changes of network topology, unbalanced load on the satellite, etc., to achieve balanced distribution of global traffic, reduce The effect of packet loss rate and lightweight traffic load pressure

Active Publication Date: 2021-10-08
UNIV OF ELECTRONICS SCI & TECH OF CHINA +1
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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

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  • Reliable Routing Method of Leo Satellite Network Based on Qos Guarantee
  • Reliable Routing Method of Leo Satellite Network Based on Qos Guarantee
  • Reliable Routing Method of Leo Satellite Network Based on Qos Guarantee

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[0088] Exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be understood that the implementations shown and described in the drawings are only exemplary, intended to explain the principle and spirit of the present invention, rather than limit the scope of the present invention.

[0089] Before describing the specific embodiments of the present invention, some abbreviations that appear in the present invention are explained first, so that understand the present invention better:

[0090] LEO: Low Earth Orbit, low orbit satellite;

[0091] QoS: Quality of Service, service quality;

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

[0093] S_LSA: Satellite Link State Advertisement, satellite link status report;

[0094] P_LSA: Plane Link State Advertisement, track surface link status report;

[0095] NSB: Network State Base, the whole network state information base;

[0096] LARAC: Lagrange ...

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Abstract

The invention discloses a QoS-guaranteed LEO satellite network reliability routing method, which guides the transfer of traffic in hotspot areas to non-hotspot areas, and at the same time of route selection, designs strict quality of service QoS constraints to complete the inter-satellite routing path Search to ensure that the path found has the best quality of service, and try to pass through satellites with light load tasks to reduce the probability of satellite congestion, thereby reducing the packet loss rate and improving the reliability of routing and forwarding paths.

Description

technical field [0001] The invention belongs to the technical field of LEO satellite communication, and in particular relates to the design of a QoS-guaranteed LEO satellite network reliability routing method. Background technique [0002] With the rapid development of space information technology, low-orbit (LEO, Low Earth Orbit) satellite communication systems are playing an increasingly important role in global communications, navigation and positioning, weather forecasting, disaster monitoring, and military applications. The inter-satellite routing algorithm, one of the key technologies of the satellite communication network, is the core factor to improve the performance of the entire satellite communication network. 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 fai...

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Application Information

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Patent Type & Authority Patents(China)
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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