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Low-orbit satellite beam scheduling method based on hopping beam communication system

A communication system and low-orbit satellite technology, applied in the field of low-orbit satellite communications, can solve problems such as reducing system resource utilization efficiency, degrading user experience, and narrowing beam angles, reducing air interface transmission pressure, improving response time, and reducing computing. effect of stress

Active Publication Date: 2021-01-15
航天科工空间工程发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional low-orbit communication satellites use several fixed beams to continuously cover the ground, which has nothing to do with the user distribution area, so that areas without users can also obtain satellite energy coverage. On the contrary, in areas where users are more concentrated and require greater communication bandwidth, there will be Because multiple users share limited resources, the user experience is degraded and the efficiency of system resource usage is reduced.
In addition, satellite communication terminals are directly oriented to users, and should adapt to the market demand for low cost and miniaturization, and use the smallest aperture to meet the maximum bandwidth expected by users. The small aperture of the terminal means that the satellite-borne user antenna needs to have higher gain. High gain means narrow beam angle

Method used

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  • Low-orbit satellite beam scheduling method based on hopping beam communication system
  • Low-orbit satellite beam scheduling method based on hopping beam communication system
  • Low-orbit satellite beam scheduling method based on hopping beam communication system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] like figure 1 A low-orbit satellite beam scheduling method based on a beam-hopping communication system is shown, including:

[0031] The preparatory steps are done externally beforehand:

[0032] 1. According to the satellite coverage area and the characteristics of the point beam parameters on the satellite, the projection of the satellite coverage area on the ground is arranged and divided according to the wave positions of the phased array antenna, and the divided wave positions are numbered.

[0033] like figure 2 It shows that the coordinate origin is the beam emission point, the X axis is the azimuth direction (x>0 azimuth angle is positive, x0 pitch angle is positive, y figure 2 In the figure is an exemplary wave position arrangement and numbering, and the present invention does not limit the wave position arrangement and numbering.

[0034] 2. According to the beam angle information of the on-satellite point and the above-mentioned determined wave position a...

Embodiment 2

[0046] A low-orbit satellite beam scheduling module based on a beam-hopping communication system, including: a user station and a satellite base station, wherein,

[0047] The user station is used to independently calculate the current wave position number;

[0048] The user station reports the service application information to the satellite base station with the wave position number and the effective time of the wave position duration;

[0049] The satellite base station is configured to uniformly schedule beam resources to perform beam projection services according to the wave position number of the user station and the valid time of the wave position duration.

[0050] The user station includes a calculation unit, which is used for the user station to obtain its own position information and system time information, and at the same time receive broadcast ephemeris information, analyze and extract the ephemeris through baseband; perform orbit recursion based on the initial e...

Embodiment 3

[0053] A computer-readable storage medium, on which a computer program is stored, and when the program is executed by a processor, the method described in Embodiment 1 is implemented.

[0054] In practical applications, the computer-readable storage medium may use any combination of one or more computer-readable media. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. A computer-readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or device, or any combination thereof. More specific examples (non-exhaustive list) of computer readable storage media include: electrical connections with one or more leads, portable computer disks, hard disks, random access memory (RAM), read only memory (ROM), Erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM)...

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Abstract

The embodiment of the invention discloses a low-orbit satellite beam scheduling method based on a beam hopping communication system, and the method is characterized in that the method comprises the steps that S10, a user station autonomously calculates the number of a current wave position where the user station is located; S30, the user station carries a wave position number and effective time ofwave position duration in the service application information and reports the wave position number and the effective time to the satellite base station; S50, the satellite base station uniformly schedules beam resources to perform beam projection service according to the wave position number of the user station and the effective time of the wave position duration. According to the method, on theone hand, the satellite computing pressure can be reduced; on the other hand, the air interface transmission pressure can be reduced, the user station does not need to report own position informationin real time, and the computing pressure of the satellite base station and the air interface transmission pressure can be effectively reduced, so efficient beam pointing scheduling is realized, and the resource allocation response time is prolonged.

Description

technical field [0001] The invention relates to the field of low-orbit satellite communication, and more specifically, relates to a low-orbit satellite beam scheduling method, module, storage module and computer equipment based on a beam-hopping beam communication system. Background technique [0002] The user distribution of the low-orbit satellite communication system has the characteristics of small-scale aggregation, and the distribution is relatively random, and the coverage is generally non-uniform. Traditional low-orbit communication satellites use several fixed beams to continuously cover the ground, which has nothing to do with the user distribution area, so that areas without users can also obtain satellite energy coverage. On the contrary, in areas where users are more concentrated and require greater communication bandwidth, there will be Because multiple users share limited resources, the user experience is degraded and the efficiency of system resource usage is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/185H04B17/40
CPCH04B7/18513H04B7/18519H04B17/40Y02D30/70
Inventor 郝珊珊王文福饶建兵高铭阳贾涵秀张悦诚
Owner 航天科工空间工程发展有限公司
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