Joint Altitude and Beamwidth Optimization for UAV-Enabled Multiuser Communications

被引:222
作者
He, Haiyun [1 ]
Zhang, Shuowen [1 ]
Zeng, Yong [1 ]
Zhang, Rui [1 ]
机构
[1] Natl Univ Singapore, Dept Elect & Comp Engn, Singapore 117583, Singapore
关键词
UAV communication; altitude optimization; directional antenna; beamwidth optimization; wireless network;
D O I
10.1109/LCOMM.2017.2772254
中图分类号
TN [电子技术、通信技术];
学科分类号
0809 ;
摘要
We study multiuser communication systems enabled by an unmanned aerial vehicle (UAV) that is equipped with a directional antenna of adjustable beamwidth. We propose a fly-hover-and-communicate protocol, where the ground terminals are partitioned into disjoint clusters that are sequentially served by the UAV as it hovers above the corresponding cluster centers. We jointly optimize the UAV's flying altitude and antenna beamwidth for throughput optimization in three fundamental multiuser communication models, namely, UAV-enabled downlink multicasting, downlink broadcasting, and uplink multiple access. Results show that the optimal UAV altitude and antenna beamwidth critically depend on the communication model considered.
引用
收藏
页码:344 / 347
页数:4
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