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Link redistribution method for polar orbit satellite network snapshots

A satellite network and redistribution technology, which is applied in the field of satellite network, can solve the problem of not considering the partition of satellite network snapshots, and achieve the effects of reducing the number of snapshots, improving utilization, and reducing storage resource requirements

Active Publication Date: 2015-04-08
NAT UNIV OF DEFENSE TECH
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  • Claims
  • Application Information

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Problems solved by technology

However, none of the above studies considered the snapshot partitioning problem for satellite networks

Method used

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  • Link redistribution method for polar orbit satellite network snapshots
  • Link redistribution method for polar orbit satellite network snapshots
  • Link redistribution method for polar orbit satellite network snapshots

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Embodiment Construction

[0036] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0037] Such as figure 1 As shown, the link redistribution method for polar orbit satellite network snapshot of the present invention, its steps are:

[0038] S1: Select an event that triggers link reallocation;

[0039] According to actual needs, you can choose: based on the link disconnection event or based on the link establishment event. If it is selected based on the link disconnection event, then step S2 is performed, and if it is selected based on the link establishment event, then step S3 is performed.

[0040] S2: When selected as link-down event-based:

[0041] According to the number of satellite lines in the non-polar region NLS npa and the satellite line (ascending or descending hemisphere) LS just exiting the polar region npa0 The parity of the satellite orbit number is different, and enters a different link realloca...

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Abstract

The invention discloses a link redistribution method for polar orbit satellite network snapshots. The link redistribution method includes the steps of: S1, selecting to trigger a link redistribution event, wherein the selection is performed based on a link disconnection event or a link establishment event; S2, selecting based on the link disconnection event: entering a different link redistribution sub-process according to the number of satellite rows in a non-polar area and different parity of the sequence number of a satellite orbit where a satellite which just exits the polar area is located; S3, selecting based on the link establishment event: S301, when the quotient of duplation of the latitude of the polar area and the phase angle of the satellites in the adjacent orbits is an integer, entering the different link redistribution sub-process according to the number of the satellite rows in the non-polar area and different parity of the sequence number of the satellite orbit where the satellite which just exits the polar area is located; S302, when the quotient is not an integer, also entering the different link redistribution sub-process. According to the link redistribution method for the polar orbit satellite network snapshots, the satellite routing stability is improved, the use ratio of the link between the satellites is also improved, and the average end-to-end delay is reduced.

Description

technical field [0001] The present invention mainly relates to the field of satellite networks, in particular to a link redistribution method for polar-orbit satellite network snapshots, that is, using fast-switchable inter-satellite phased array antenna technology, using separate snapshots to divide events (links) Disconnection event or link establishment event), a method for link reassignment along the direction of satellite movement. Background technique [0002] The LEO satellite network uses multiple LEO satellites to form a LEO satellite constellation with uniform structure and regular movement. It makes full use of the on-board processing and on-board routing functions of the satellites, and constructs the constellation into an interconnected network with routing and forwarding functions through inter-satellite links. . [0003] Satellite systems usually adopt a relatively fixed inter-satellite link allocation method, which is also the root cause of the shortcomings ...

Claims

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Application Information

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IPC IPC(8): H04B7/185
CPCH04B7/18521
Inventor 冯振乾吴纯青刘波唐竹苏金树赵宝康陈一骄虞万荣毛席龙邓劲生
Owner NAT UNIV OF DEFENSE TECH
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