摘要
基于铁路无人机通信云计算卸载方案的主要特点是配置一个移动无人机,并向铁路移动设备提供计算卸载服务。计算卸载包含无人机与移动用户之间的上行传输与下行传输,关于卸载的实施方案有两种,分别是基于正交与非正交频分复用。解决在时延与能耗限制条件下,同时优化无人机飞行路径与上行,下行传输,本地计算数据分配等问题。通过仿真结果证实,相比于未经优化的无人机通信计算卸载飞行方案,完全优化之后,无人机能量损耗有很大降低。
The scheme of computation offloading of communication cloud of unmanned aerial vehicles(UAVs)of railways focuses on the configuration of a mobile UAV and the provision of computation service to railway mobile devices.The computational offload includes uplink and downlink transmission between the UAVs and the mobile users.There are two types of offloading,based respectively on orthogonal and non-orthogonal frequency division multiplexing.In this paper,the UAV flight paths,uplink and downlink transmission as well as local computation data distribution are optimized in response to delays and energy consumption limitations.The simulation results show that UAV energy loss is greatly reduced after complete optimization compared with other schemes.
作者
陈明阳
刘霞
龙时丹
Chen Mingyang;Liu Xia;Long Shidan(School of Information and Communication Engineering,Beijing University of Posts and Telecommunications,Beijing 100876,China;Equipment Technology Center,National Railway Administration of the People's Republic of China,Beijing 100070,China)
出处
《铁路通信信号工程技术》
2020年第9期23-28,共6页
Railway Signalling & Communication Engineering
基金
中国铁路总公司重大科研项目(2016J006-D)。
关键词
无人机通信
模型
正交频分
非正交频分
unmanned aerial vehicle(UAV)communication
model
orthogonal frequency division
non-orthogonal frequency division
