面向卫星编队飞行的有线无线时隙融合调度方案研究  

Research on Wired and Wireless Time Slots Converged Scheduling Scheme for Satellite Formation Flying

作　　者：邢媛 徐川[1] 纪伟星 赵国锋[1] 程克非 XING Yuan;XU Chuan;JI Weixing;ZHAO Guofeng;CHENG Kefei(School of Communication and Information Engineering,Chongqing University of Posts and Telecommunications,Chongqing 400065,China;School of Cyber Security and Information Law,Chongqing University of Posts and Telecommunications,Chongqing 400065,China)

机构地区：[1]重庆邮电大学通信与信息工程学院,重庆400065 [2]重庆邮电大学网络空间安全与信息法学院,重庆400065

出　　处：《电子与信息学报》2023年第12期4271-4279,共9页Journal of Electronics & Information Technology

基　　金：国家自然科学基金(62171070);重庆市研究生科研创新项目(CYB19176);重庆邮电大学博士研究生人才培养项目(BYJS201905);重庆市博士后科学基金(CSTB2022NSCQ-BHX0043)。

摘　　要：针对卫星编队飞行场景中星内有线和星间无线链路传输速率以及调度机制的差异性引起的时敏任务在星上转发时延不确定性的问题,该文提出一种有线无线融合的时隙调度方案。首先,分别构建星间无线链路传输速率、星间无线调度以及星内有线调度模型;其次,联合有线和无线链路传输速率以及二者时隙位置关系,建立有线无线融合调度与星上转发时延关联分析模型;最后,为确保时敏业务每次在星上传输的时延稳定性,在时延分析模型基础上以抖动最小为融合调度优化目标,并采用遗传禁忌搜索算法进行求解。仿真结果表明,相比于非融合调度方案,所提融合调度方案的抖动不高于40μs,转发时延平均降低了20%。Considering the uncertainty of the forwarding delay of time sensitive missions on the satellite caused by the difference of the transmission rate and scheduling mechanism between the intra-satellite wired and intersatellite wireless link in the satellite formation flying scenario,a wired and wireless converged time slot scheduling scheme is proposed.Firstly,the inter-satellite wireless link transmission rate,inter-satellite wireless scheduling and intra-satellite wired scheduling are constructed respectively.Secondly,the forwarding delay analysis model of the wired and wireless converged scheduling on the satellite is established by considering the transmission rate and the time slot position relationship between the wired and wireless link.Finally,to ensure the stability of delay when the time sensitive traffic is transmitted on the satellite each time,the converged scheduling optimization goal with the minimum jitter is constructed based on the delay analysis model,and the genetic tabu search algorithm is introduced to solve the problem.Simulation results indicate that,compared with the non-converged scheduling scheme,the jitter of the proposed converged scheduling scheme is not higher than 40 ms,and the forwarding delay is reduced by an average of 20%.

关 键 词：卫星编队飞行 时敏任务 有线无线融合调度 时延稳定性 

分 类 号：TN927[电子电信—通信与信息系统] TP393[电子电信—信息与通信工程]