Beam hopping multiple access method for low-orbit satellite constellation

An access method and low-orbit satellite technology, applied in the field of satellite communication, can solve problems such as insufficient utilization of on-board resources, channel congestion, lack of flexibility, etc., to meet dynamic business needs, reduce time slot switching time, meet The effect of quality of service requirements
CN114726431APending Publication Date: 2022-07-08NAT COMP NETWORK & INFORMATION SECURITY MANAGEMENT CENT
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
NAT COMP NETWORK & INFORMATION SECURITY MANAGEMENT CENT
Publication Date
2022-07-08

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Abstract

The invention relates to a low-orbit satellite constellation-oriented beam-hopping multiple access method. The method comprises the following steps of: constructing a self-similar information source model of a user and a beam-hopping time slot model of a low-orbit satellite constellation; time slots are distributed according to user requirements, and beams corresponding to the user groups are activated; and in the allocated time slot, performing power domain superposition on service flow data of a plurality of users in a beam coverage range by adopting a power domain multiple access method through the activated hopping beam, and sending the service flow data to a low-orbit satellite. And the low-orbit satellites serving as the receiving ends extract the received multiple user signals by adopting an interference elimination method. The utilization rate of resources on the satellite is improved from the two dimensions of time and power; in other words, all the beams do not need to work at the same time, and part of the beams are selected according to needs to send and receive multi-user signals; meanwhile, the service quality of multi-user terminal access is improved; and the requirements of various users are met while resource allocation is dynamically carried out.
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Description

technical field

[0001] The present invention relates to the technical field of satellite communications, in particular to a beam-hopping multiple access method for low-orbit satellite constellations. Background technique

[0002] Satellite mobile communication technology refers to a communication method that uses satellites as relays to realize communication between users. The range of users here includes mobile user terminals and fixed user terminals. Satellite mobile communication technology is developed from traditional satellite fixed communication technology, combined with ground mobile communication technology. The satellite systems used include LEO (Low Earth Orbit, Low Earth Orbit) satellites, MEO (Middle Earth Orbit, Medium Earth Orbit) satellites, HEO (Highly Elliptical Orbit, High Elliptical) satellites, GSO (Geosynchronous Orbit, Geosynchronous Orbit) satellites and the like. In the military field, satellite mobile communication technology is an irreplaceable m...

Claims

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