Efficient Deployment of Multiple Unmanned Aerial Vehicles for Optimal Wireless Coverage
Efficient Deployment of Multiple Unmanned Aerial Vehicles for Optimal Wireless Coverage
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DOI：
10.1109/lcomm.2016.2578312
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发表时间：
2016-08-01
期刊：
影响因子：
--
通讯作者：
Debbah, Merouane
中科院分区：
文献类型：
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作者：
Mozaffari, Mohammad;Saad, Walid;Debbah, Merouane
在这封信中，多个无人机（UAV）作为无线基站，为地面用户提供覆盖的有效部署进行了分析。首先推导了无人机下行链路覆盖概率随高度和天线增益的变化关系。其次，利用圆填充理论，以最大化无人机覆盖寿命的同时最大化总覆盖区域的方式确定无人机的3-D位置。研究结果表明，为了减轻干扰，无人机的高度必须根据定向天线的波束宽度以及覆盖要求进行适当的调整。此外，确定了保证给定地理区域的目标覆盖概率所需的UAV的最小数量。数值结果评估了各种权衡。
In this letter, the efficient deployment of multiple unmanned aerial vehicles (UAVs) acting as wireless base stations that provide coverage for ground users is analyzed. First, the downlink coverage probability for UAVs as a function of the altitude and the antenna gain is derived. Next, using circle packing theory, the 3-D locations of the UAVs is determined in a way that the total coverage area is maximized while maximizing the coverage lifetime of the UAVs. Our results show that, in order to mitigate interference, the altitude of the UAVs must be properly adjusted based on the beamwidth of the directional antenna as well as coverage requirements. Furthermore, the minimum number of UAVs needed to guarantee a target coverage probability for a given geographical area is determined. Numerical results evaluate various tradeoffs.