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Satellite network snapshot routing optimization method

A technology of satellite network and optimization method, which is applied in the direction of data exchange network, radio transmission system, digital transmission system, etc., can solve problems such as service interruption, real-time service with large delay and jitter, and does not consider frequent switching of snapshots, etc., to reduce delay Jitter, the effect of reducing business interruption

Active Publication Date: 2017-10-20
NAT UNIV OF DEFENSE TECH
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Problems solved by technology

[0005] (1) Only the optimal route between any pair of satellite nodes in each snapshot is considered, the route between snapshots is calculated independently, and the problem of frequent switching of snapshots is not considered
[0006] (2) From a business point of view, the business may experience multiple snapshots from the beginning to the end, and its routes will still undergo frequent switching
Frequent route switching brings large delay and jitter to real-time services, and even leads to service interruption

Method used

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  • Satellite network snapshot routing optimization method
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  • Satellite network snapshot routing optimization method

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Embodiment Construction

[0038] The present invention will be further described below in conjunction with the accompanying drawings and specific preferred embodiments, but the protection scope of the present invention is not limited thereby.

[0039] NGEO satellite network models usually include such as figure 2 The polar-orbiting constellation network model shown, and image 3 The model of the inclined-orbit constellation network shown. In the NGEO satellite network, the topology of the satellite network is highly variable, and frequent route switching brings large delay and jitter to real-time services, and even leads to service interruption.

[0040] Such as figure 1 As shown, the satellite network snapshot routing optimization method of this embodiment, the steps are: S1. Generate a snapshot according to the network topology of the satellite; S2. Determine according to the preset optimization expectation, the preset average service duration and the duration of a single snapshot Superimpose the...

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Abstract

The invention discloses a satellite network snapshot routing optimization method. The method comprises the steps that S1 snapshots are generated according to the satellite network topology; S2 according to the preset optimization expectation, the preset average service duration and the duration of a single snapshot, the final value of the number of superimposed snapshots is determined; and S3 snapshots determined by the final value are superimposed to acquire a target topology; the link weight of the target topology is determined; a route is calculated through the target topology. According to the invention, link stability in an optimization interval can be effectively ensured; transmission stability in the optimization interval is ensured; route switching is reduced; and delay jitter, service interruption and the like caused by route switching is reduced.

Description

technical field [0001] The invention relates to the field of space information network control, in particular to a satellite network snapshot routing optimization method, in particular to real-time business-oriented satellite network snapshot routing optimization. Background technique [0002] The satellite network has the advantages of wide coverage and is not restricted by ground conditions. It has a special status in long-distance communication and emergency rescue and disaster relief. It is an important way to achieve global coverage of the network. Compared with the GEO (Geostationary Earth Orbit, geostationary orbit) satellite network, the NGEO (Non-Geostationary Earth Orbit, non-geostationary orbit) satellite network such as the medium and low orbit satellite network has the advantages of small propagation delay and low power consumption. [0003] However, in the NGEO satellite network, the satellites are constantly orbiting, and the ISL (Inter-Satellite Link, Inter-S...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/185H04L12/721H04L12/751H04L45/02
CPCH04B7/18521H04L45/02H04L45/14
Inventor 虞万荣吴纯青刘波赵宝康毛席龙
Owner NAT UNIV OF DEFENSE TECH
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