期刊
IEEE WIRELESS COMMUNICATIONS LETTERS
卷 12, 期 3, 页码 550-554出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LWC.2023.3234008
关键词
Three-dimensional displays; Handover; Autonomous aerial vehicles; Directional antennas; Mobility models; Antennas; Solid modeling; Cellular-connected UAVs; 3D mobility; directional antenna; handover probability; coverage probability
This letter proposes an analytical framework to evaluate the coverage performance of a cellular-connected unmanned aerial vehicle (UAV) network with directional antennas and 3D mobility. Using stochastic geometry, the handover probability and coverage probability of a random UAV-UE under the strongest average RSS association strategy are derived. The framework allows the investigation of UAV-UE antenna beamwidth, mobility speed, cell association, and vertical motions on handover probability and coverage probability. The study concludes that the optimal UAV-UE antenna beamwidth decreases with GBS density and the nearest association model is preferred in a sparse network.
This letter proposes an analytical framework to evaluate the coverage performance of a cellular-connected unmanned aerial vehicle (UAV) network in which UAV user equipments (UAV-UEs) are equipped with directional antennas and move according to a three-dimensional (3D) mobility model. The ground base stations (GBSs) equipped with practical down-tilted antennas are distributed according to a Poisson point process (PPP). With tools from stochastic geometry, we derive the handover probability and coverage probability of a random UAV-UE under the strongest average received signal strength (RSS) association strategy. The proposed analytical framework allows to investigate the effect of UAV-UE antenna beamwidth, mobility speed, cell association, and vertical motions on both the handover probability and coverage probability. We conclude that the optimal UAV-UE antenna beamwidth decreases with the GBS density, and the omnidirectional antenna model is preferred in the sparse network scenario. What's more, the superiority of the strongest average RSS association over the nearest association diminishes with the increment of GBS density.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据