摘要
传统的多波束卫星通信系统采用固定的资源分配方式导致资源利用率较低,跳波束技术可以使卫星波束根据业务需求灵活的分配卫星资源,然而在整个卫星系统中随着波束的增加,波束选择的计算复杂度随之增加,而且系统并没有考虑业务公平性、波束干扰等问题。针对上述问题,提出了基于业务实时占比的卫星波束调度方法,以最小化波束提供量与需求量差值为目标,将波束调度分为3个子问题,首先通过时隙分配降低计算复杂度,其次通过最小化业务延迟,降低了业务时延,最后通过空间隔离的方式抑制了波束间的同频干扰,提高同频复用率。仿真结果表明,该方法能够有效提高业务公平性和资源利用率。
The traditional multi-beam satellite communication system uses fixed resource allocation mode,which leads to low resource utilization rate.The beam-hopping technology can enable the satellite beam to flexibly allocate satellite resources according to business requirements.However,the computational complexity of beam selection increases with the increase of beam in the whole satellite system,and the system does not consider service fairness,beam interference and other issues.To solve the above problems,a satellite beam scheduling method based on real-time service ratio is proposed.Aiming at minimizing the difference between beam quantity and demand,beam scheduling is divided into three sub-problems.Firstly,computational complexity is reduced by slot allocation.Secondly,service delay is reduced by minimizing service delay.Finally,by means of space isolation,the same frequency interference between beams is suppressed and the same frequency multiplexing rate is improved.Simulation results show that this method can effectively improve service equity and resource utilization.
作者
张新澳
杨巧丽
Zhang Xin'ao;Yang Qiaoli(Electronic and Information Engineering Institute,Nanjing University of Information Science and Technology,Nanjing 210044,China;The Sixty-third Research Institute,National University of Defense Technology,Nanjing 210007,China)
出处
《国外电子测量技术》
北大核心
2023年第7期132-139,共8页
Foreign Electronic Measurement Technology
关键词
卫星通信
跳波束
干扰消除
波束调度
satellite communication
beam-hopping
interference cancellation
beam scheduling
