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Method and system for enhancing communication performance of low-orbit satellites based on multi-satellite cooperation

A satellite communication system and satellite communication technology, applied in the field of low-orbit satellite communication performance enhancement based on multi-satellite cooperation, can solve problems such as poor data reception performance of border terminals

Active Publication Date: 2021-08-24
PURPLE MOUNTAIN LAB
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Problems solved by technology

[0005] The low-orbit satellite communication performance enhancement method and system based on multi-satellite cooperation provided by the embodiments of the present invention can at least solve the problem of poor data reception performance of boundary terminals covered by overlapping coverage of multiple satellites

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  • Method and system for enhancing communication performance of low-orbit satellites based on multi-satellite cooperation
  • Method and system for enhancing communication performance of low-orbit satellites based on multi-satellite cooperation
  • Method and system for enhancing communication performance of low-orbit satellites based on multi-satellite cooperation

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Embodiment Construction

[0023] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. Hereinafter, embodiments of the present invention will be described in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention. Those skilled in the art will understand that unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the word "comprising" used in the description of the present invention refe...

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Abstract

The embodiment of the invention discloses a low-orbit satellite communication performance enhancement method and system based on multi-satellite cooperation, relates to the field of satellite communication networks, and can solve the problem of poor data reception performance of boundary terminals covered by multiple satellites. The invention includes: dividing the data stream into n sub-streams in proportion and sending them to n satellites respectively, and regularly updating the ratio of the n sub-streams, wherein, n is a positive integer greater than or equal to 2; each satellite will receive the data The packet is segmented and encoded and sent to the terminal, and sent to other satellites through the inter-satellite link; the terminal decodes the transmission block TB after receiving the transmission block TB from n satellites, and performs soft combination processing on the retransmission segments; according to the transmission A result of decoding each segment in the block generates a comprehensive response and sends it to the n satellites; each satellite retransmits the segmented response to the terminal after receiving the comprehensive response. The invention is suitable for multi-star cooperative transmission of low-orbit communication satellites.

Description

technical field [0001] The invention relates to the field of satellite communication networks, in particular to a multi-satellite cooperation-based low-orbit satellite communication performance enhancement method and system, and in particular can be applied to the performance enhancement of border terminals. Background technique [0002] Current low-orbit communication satellites generally cover ground terminals with electromagnetic beams. However, due to the very fast movement speed of low-orbit satellites, the time for the general electromagnetic beam to cover a ground terminal is usually within 10 minutes. When the terminal is frequently at the boundary of the coverage area of ​​two or more satellite electromagnetic beams, the received Not only is the satellite communication signal weak, but it will also be interfered by the signal transmitted by another satellite, which seriously affects the quality of terminal data reception. [0003] A possible solution currently prop...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/185
CPCH04B7/1851H04B7/18519
Inventor 沈庆国高西奇
Owner PURPLE MOUNTAIN LAB
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