无人机网络中基于位置预测的最优中继选择  

Optimal Relay Selection Based on Location Prediction for Unmanned Aerial Vehicle Networks

作　　者：陈娅婕 王兵兵 秦蓁 王欣婷 李艾静 王海 袁进 CHEN Ya-jie;WANG Bing-bing;QIN Zhen;WANG Xin-ting;LI Ai-jing;WANG Hai;YUAN Jin(Coummunication Engineering,Army Engineering University of PLA,Nanjing 210042,China;Northern Theater Command Unit 31411,Shenyang 110001,China)

机构地区：[1]陆军工程大学通信工程学院,南京210042 [2]北部战区31411部队,沈阳110001

出　　处：《科学技术与工程》2020年第36期14982-14987,共6页Science Technology and Engineering

基　　金：国家自然科学基金(61631020,61702525,61702545,61371124)。

摘　　要：为了解决无人机(unmanned aerial vehicle,UAV)协作通信网络在完成任务时由于高机动性而会影响链路状态的问题,提出了一种基于UAV位置预测的信道中继选择算法。根据卡尔曼算法预测出UAV下一时刻的位置,提前判断链路优劣性,使更换UAV中继节点的时机更为精准。通过UAV源节点到UAV中继节点以及UAV中继节点到UAV目的节点的瞬时信道状态信息(channel state information,CSI)选出备选UAV中继节点集合。最优的备选UAV中继节点由贪婪算法计算而得。仿真结果证明了此方法的有效性,链路中断的概率比随机选择算法降低了10%,且链路更加稳定。In order to solve the problem that the unmanned aerial vehicle(UAV)cooperative communication network would affect the link state due to its high mobility in the task,a channel relay selection algorithm based on UAV position prediction was proposed.According to the Kalman algorithm,the next time position of UAV was predicted,and the link quality was judged in advance,so that the time of replacing UAV relay node was more accurate.Through the channel state information(CSI)from the UAV source node to the UAV relay node and from the UAV relay node to the destination node,an alternative set of UAV relay nodes was selected.The optimal candidate UAV relay nodes were calculated by greedy algorithm.The simulation results show that the proposed method is effective and the probability of link interruption is 10%lower than that of random selection algorithm,and the link is more stable.

关 键 词：中继选择 协作通信 中断概率 位置预测 

分 类 号：TN915.06[电子电信—通信与信息系统]