太赫兹科学与电子信息学报2024，Vol.22Issue(5)：485-494,10.DOI:10.11805/TKYDA2023438
基于TDD的低轨卫星跳波束资源分配算法
Novel research on beam hopping resource allocation algorithm of Low Earth Orbit satellite based on TDD
摘要
Abstract
In the Low Earth Orbit(LEO)scenario,beam hopping technology can flexibly allocate system resources and is suitable for the scenario of uneven service distribution.Time Division Duplex(TDD)mode has low requirements on the terminal and is conducive to the development of upstream and downstream asymmetric services.Therefore,a resource allocation algorithm is proposed for low-orbit satellite beam hopping based on TDD.Firstly,the resource allocation model of LEO reverse link supporting beam hopping and Multifrequency-Time Division Multiple Access(MF-TDMA)is established to minimize the time domain resource consumption in condition of satisfying the service requirements.Secondly,considering the dynamic time-delay compensation of satellite and earth,a multi-level beam hopping time slot architecture design is adopted to maximize the available time slot.The upstream and downstream time slot switching model is established,and a beam hopping time slot scheduling optimization method is proposed based on TDD.Simulation results show that compared with traditional MF-TDMA resource allocation method or fixed multi-beam splitting algorithm,the proposed algorithm can effectively improve the time slot utilization and throughput of the system.关键词
低轨卫星网络/跳波束/资源分配/时分双工/多频时分多址接入Key words
Low Earth Orbit satellite network/beam hopping/resource allocation/Time Division Duplex/Multifrequency-Time Division Multiple Access分类
电子信息工程引用本文复制引用
邹安银,张晨,张更新..基于TDD的低轨卫星跳波束资源分配算法[J].太赫兹科学与电子信息学报,2024,22(5):485-494,10.基金项目
国家重点研发计划重点专项资助项目(2022YFB2902600) （2022YFB2902600）
国家自然科学基金资助项目(61901230 （）
U21A20450) （）
