Medium and low orbit constellation satellite beam frequency resource allocation method

Abstract

The invention provides a medium and low orbit constellation satellite beam frequency resource allocation method. The medium and low orbit constellation satellite beam frequency resource allocation method comprises the steps of: performing initial sub-band allocation on each beam, and taking a certain fixed carrier in the sub-band allocated by each beam as the carrier of a broadcasting channel, wherein the initial sub-band of each beam is at least a sub-band; according to the odd number or even number of the orbit planes of the satellite constellation, determining a main orbit plane and a supplementary orbit plane; realizing coverage of partial areas to the ground including the two poles through single coverage composed of a satellite in the main orbit plane, and performing beam opening orclosing on the satellite in the supplementary orbit plane, so that the coverage of a blank area to the ground at the medium and low latitudes is completed; performing frequency resource allocation oneach terminal by taking the carrier as the unit, and, if the number of access terminals under a certain beam is beyond the user number born by the initial sub-band, increasing available sub-bands or carriers for the satellite beam; and realizing complete coverage. By means of the medium and low orbit constellation satellite beam frequency resource allocation method in the invention, constellationbeam frequency resource allocation can be realized better; and the method has the characteristics of being simple, high-efficiency and high in engineering practicability.

Description

technical field [0001] The invention belongs to the field of medium and low orbit satellite constellation communication, and relates to a method for allocating beam frequency resources of medium and low orbit constellation satellites. Background technique [0002] LEO satellites have the advantages of low orbit height, low transmission delay between satellites and ground nodes, miniaturized user terminals and low power consumption, and efficient frequency reuse. At present, the world is setting off a new upsurge in the development of satellite Internet low-orbit constellations. my country is also developing its own low-orbit satellite constellation system. The construction of a low-orbit satellite constellation system needs to tackle key problems and solve a series of key technical problems, including inter-beam interference and frequency resources. Distribution is one of the particularly critical issues. The characteristic of low-orbit satellite constellation is that the sp...

AI Technical Summary

Problems solved by technology

[0006] The problem to be solved by the invention is to solve the complex problem of satellite beam frequency resource allocation caused by the high-speed movement and relative motion between spot beams in the low-orbit satellite mobile communication system

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