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Satellite beam switching method and system based on multiple dimensions

A beam switching and multi-dimensional technology, applied in the field of satellite communication, can solve problems such as high overhead, achieve the effects of reducing network overhead, improving efficiency and communication quality, and saving switching resources

Inactive Publication Date: 2021-02-02
XIAN SPACE STAR TECH IND GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Handover technology ensures service continuity, but brings greater overhead to the entire system

Method used

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  • Satellite beam switching method and system based on multiple dimensions
  • Satellite beam switching method and system based on multiple dimensions
  • Satellite beam switching method and system based on multiple dimensions

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] See figure 1 , figure 1 It is a flow chart of a satellite terminal based on a multi-dimensional satellite beam switching method provided by an embodiment of the present invention. The method includes:

[0043] S1. Monitor the current satellite terminal’s pending switching index information, wherein the pending switching index information includes the received signal strength of the original beam at the current moment, the received signal strength of each adjacent beam, channel quality, the available resources of each adjacent beam, and the position of each adjacent beam coordinate;

[0044] The received signal strength RSSI of the original beam at the current moment and the received signal strength P of each adjacent beam refer to the strength of the downlink signal received by the satellite terminal at the current moment of the original beam and each adjacent beam.

[0045] Channel quality indicator CQI, the quality of the channel fed back from the satellite to the s...

Embodiment 2

[0090] See Image 6 , Image 6 A block diagram of a satellite beam switching system based on multi-dimensionality provided by the embodiment of the present invention is applied to satellite terminals, including:

[0091]The handover index information monitoring unit 1 is used to monitor the to-be-switched index information of the current satellite terminal, wherein the to-be-switched index information includes the received signal strength of the original beam at the current moment, the received signal strength of each adjacent beam, the channel quality, and the received signal strength of each adjacent beam. Available resources, location coordinates of each adjacent beam;

[0092] The handover threshold calculation unit 2 is configured to obtain a maximum value of the handover threshold according to the information of the index to be handed over, so that when the gateway judges that the maximum value of the handover threshold satisfies a preset condition, the beam of the sate...

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Abstract

The invention discloses a satellite beam switching method based on multiple dimensions. When being applied to a satellite terminal, the method comprises the following steps: monitoring to-be-switchedindex information of the current satellite terminal, wherein the to-be-switched index information comprises original beam receiving signal intensity at the current moment, receiving signal intensity of each adjacent beam, channel quality, available resources of each adjacent beam and position coordinates of each adjacent beam; obtaining a switching threshold maximum value according to the to-be-switched index information so as to carry out the beam switching of the satellite when the gateway station judges that the switching threshold maximum value meets a preset condition. When being appliedto a gateway station, the method comprises the following steps: receiving to-be-switched index information and a switching threshold maximum value sent by a satellite terminal; when that the switchingthreshold maximum value meets a preset condition, carrying out satellite beam switching on the mobile terminal, wherein the switching threshold maximum value is obtained through calculation of to-be-switched index information. According to the method disclosed in the invention, excessive network overhead caused by beam switching can be reduced, and the switching efficiency and the communication quality are improved.

Description

technical field [0001] The invention belongs to the field of satellite communication, and in particular relates to a multi-dimensional satellite beam switching method and system. Background technique [0002] In a satellite communication system, due to the mobility of the satellite and the terminal, when both the satellite and the terminal are in motion, the terminal may move out of the current beam and cross into other adjacent beams. In order to maintain the communication quality of the terminal, it is necessary to switch between beams or satellites when the terminal crosses the beam boundary. Handover is an important part of the design of a satellite mobile communication system. In general, different satellite communication system scenarios require different handover algorithms. The quality of the handover algorithm and the correctness of the handover decision strategy directly affect the system communication performance. According to the different scenarios of the sate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/185H04W72/04H04W72/08H04W72/54
CPCH04B7/18513H04B7/18519H04B7/18541H04W72/046H04W72/542
Inventor 党金瑞陈昱良郭伟李京娥张骞丹
Owner XIAN SPACE STAR TECH IND GRP
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