低轨跳波束卫星网络的服务质量均衡与干扰抑制  

QoS Balancing and Interference Suppression for LEO Beam-Hopping Satellite Networks

作　　者：李童 姚如贵[1] 樊晔 左晓亚[1] 徐娟[3] LI Tong;YAO Rugui;FAN Ye;ZUO Xiaoya;XU Juan(School of Electronics and Information,Northwestern Polytechnical University,Xi’an 710072,China;Research&Development Institute of in Shenzhen,Northwestern Polytechnical University,Shenzhen 518063,China;School of Electronic and Control Engineering,Chang’an University,Xi’an 710064,China)

机构地区：[1]西北工业大学电子信息学院,西安710072 [2]西北工业大学深圳研究院,深圳518063 [3]长安大学电子与控制工程学院,西安710064

出　　处：《北京邮电大学学报》2024年第6期105-110,117,共7页Journal of Beijing University of Posts and Telecommunications

基　　金：广东省基础与应用基础研究基金项目(2021A1515110077)。

摘　　要：针对星间服务质量失衡和星间干扰问题,提出了一种低轨-跳波束卫星网络,通过星间服务质量均衡和干扰抑制提高了小区的服务质量。不同业务类型的小区存在优先级差异,任何小区在一个跳波束时间窗内至少应有一个时隙服务。对此,提出了用于卫星间小区分簇的小区质量均衡算法。由于多颗卫星共享频谱时严重的星间干扰降低了小区的服务质量,提出了动态干扰抑制算法。仿真实验结果表明,与最大仰角算法相比,小区质量均衡算法缩减了70%的星间服务质量差距,实现了服务质量均衡。与不抑制星间干扰的情况相比,动态干扰抑制算法确保星间干扰始终低于干扰阈值,能提高服务质量水平。To address the problems of quality of service imbalance and inter-satellite interference,a low earth orbitbeam-hopping satellite network is proposed,it can enhance the quality of service through intersatellite quality of service balancing and interference suppression.Cells with different types of services have varying priority levels,and each cell should be allocated at least one-time slot in a beam-hopping time window.Therefore,a cell quality equalization algorithm to cluster inter-satellite cells is proposed.Since multiple satellites share the spectrum,severe inter-satellite interference diminishes cells'quality of service.Therefore,a dynamic interference suppression algorithm is introduced.Simulation results show that compared tothe maximum elevation angle algorithm,the cell quality equalization algorithm reduces the inter-satellite quality of service disparityby 70%and achieves quality of service balancing.Compared toscenarios without interference suppression,the dynamic interference suppression algorithm ensures that the inter-satellite interference is always below the interference threshold,therefore improving the quality of service levels.

关 键 词：跳波束技术 干扰抑制 服务质量均衡 

分 类 号：TN914.5[电子电信—通信与信息系统]