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Method and system for suppressing satellite network routing oscillation

A satellite network and routing technology, applied in the field of satellite communications, can solve problems such as a large number of packet loss and affect network performance, and achieve the effect of reducing the number of routing options

Active Publication Date: 2020-01-14
TSINGHUA UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] The present invention provides a satellite network route oscillation suppression method and system that overcomes the above-mentioned problems or at least partially solves the above-mentioned problems, and solves the problem of routing oscillation at the transfer link between adjacent orbits in the prior art that causes a large number of packet loss and huge Issues Affecting Network Performance

Method used

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  • Method and system for suppressing satellite network routing oscillation
  • Method and system for suppressing satellite network routing oscillation
  • Method and system for suppressing satellite network routing oscillation

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Embodiment Construction

[0042] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0043] Such as image 3 As shown in the figure, a satellite network routing vibration suppression method is shown, including:

[0044] S1. Calculate the link survival time of the link between adjacent tracks, the link survival time is the time interval from the current moment to the link interruption moment of the link between adjacent tracks, and based on the link survival time, the occurrence The route flapping handover link is used for positioning; when the link is just established, its link lifetime is the largest, when the link is about to be interrupted, its link lifetime is the smallest, and when the link is interrupted, the link lifetime is zero.

[0045] S2. Eli...

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Abstract

The invention provides a satellite network routing oscillation inhibition method and system. The system comprises the following steps: S1, computing link survival time of an adjacent inter-rail link,wherein the link survival time is the time interval of the adjacent inter-rail link to the link interrupting moment from the current moment, and positioning a care-of link in routing oscillation basedon the link survival time; S2, eliminating the link delay change of the care-of link through a link cost function to eliminate the influence on the routing selection by the link delay change, therebyrealizing the routing oscillation inhibition. The link survival time can be computed through the predictability of the satellite movement, and the care-of link in the routing oscillation is positioned; and the link cost function only acted on the care-of link is proposed and used as the basis of the routing computation; the link cost function can decouple the linkage change relation of the link delay and the link connectivity on the basis of maintaining relatively changed spatial network topology, thereby eliminating the factors causing the routing oscillation.

Description

technical field [0001] The present invention relates to the technical field of satellite communication, and more particularly, to a satellite network route oscillation suppression method and system. Background technique [0002] The satellite network is a system composed of various types of satellites in different orbits connected to each other. Satellite nodes provide communication paths through Inter-Satellite Links (ISL) (also known as interstellar links or inter-satellite links) to transmit signals. , Provide routing and forwarding packets. Make full use of the performance of high-, medium- and low-orbit satellites to build integrated services that can provide broadband to users around the world, and a multi-layered satellite network (Multi-layered satellite network) that guarantees Quality of Service (QoS) has become a future satellite Trends in the development of communication networks. Therefore, the development of routing strategies suitable for multi-layer satelli...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/185H04W40/02H04W40/12H04W40/14H04L12/721
CPCH04B7/18584H04L45/12H04L45/32H04W40/02H04W40/12H04W40/14
Inventor 李贺武杨增印吴茜吴建平
Owner TSINGHUA UNIV
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