High-throughput satellite communication system beam hopping method

A satellite communication system and beam hopping technology, applied in the field of satellite communication

Active Publication Date: 2019-03-08
NANJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a high-throughput satellite communication system beam-hopping method by studying the existing model and overcoming the deficiencies of the prior art. In order to meet the needs of multiple users at the same time

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  • High-throughput satellite communication system beam hopping method

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Embodiment Construction

[0055] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:

[0056] This embodiment proposes a novel beam-hopping technology for a high-throughput satellite communication system. Such as figure 1 As shown, the technique is based on the fairness principle assumption that clusters are usually evenly divided, i.e. the number of user beams in each cluster is the same. Assuming that the number of user beams in the system is K and the beams are divided into N clusters, then the number of user beams in each cluster is M=K / N, and full frequency reuse is used between clusters to meet multiple business requirements at the same time. Multiple beams are illuminated in the same time slot in the cluster, and time slots are allocated according to business requirements to realize beam-hopping technology. In order to achieve optimal or suboptimal solutions for time slots, SNR, adjacent beam interference, etc., and finally...

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Abstract

The invention provides a high-throughput satellite communication system beam hopping method. According to the method, uniform clustering is carried out on total beams according to a business requirement, an objective function is established for the requirement, whether edge beam distance of adjacent clusters is equal to 2R and the same are in working status is monitored, if not, performance satisfies direct calculation of frequency spectrum efficiency, and if yes, an interference avoidance measure is taken, then the frequency spectrum efficiency is calculated, a KKT condition is used for solving of time slot allocation numbers of a closed-form solution, finally, rounding-down is carried out according to values of the closed-form solution, the same is optimized, and optimal capacity allocation is obtained. The method has the advantages that a dynamic requirement of capacity can be satisfied, frequency spectrum efficiency can be improved, and performance decreasing caused by interferenceof the same frequency can also be avoided.

Description

technical field [0001] The invention relates to a beam-hopping method for a high-throughput satellite communication system, in particular to a resource allocation method based on time-slicing interference avoidance and on-demand coverage, and belongs to the technical field of satellite communication. Background technique [0002] In a traditional multi-beam satellite communication system, the power and frequency resources assigned to each beam are only a part of the entire satellite resource, and the system can only schedule available resources within each beam range to meet the diverse needs of users. demand, resulting in "fragmented" scheduling of satellite resources; with the further increase in the capacity of the multi-beam satellite communication system, the number of spot beams will often increase, which not only leads to the aggravation of the "fragmented" phenomenon of satellite resources, but also causes satellite loads. The corresponding increase will eventually l...

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Application Information

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IPC IPC(8): H04B7/0408H04B7/185H04W72/08
CPCH04B7/0408H04B7/18513H04B7/18539H04B7/18543H04W72/541H04W72/542H04B7/2041H04B7/1851
Inventor 张晨王琳张更新谢继东
Owner NANJING UNIV OF POSTS & TELECOMM
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