Geometric Analysis-based 3D Anti-block UAV Deployment for mmWave Communications
Geometric Analysis-based 3D Anti-block UAV Deployment for mmWave Communications
复制标题
基于几何分析的毫米波通信 3D 防遮挡无人机部署
DOI：
10.1109/lcomm.2022.3201842
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发表时间：
2022
期刊：
影响因子：
--
通讯作者：
Kun Yang
中科院分区：
文献类型：
--
作者：
Fan Li;Chen He;Xiaoya Li;Jinye Peng;Kun Yang
在这封信中，无人机（UAV）的三维（3D）部署问题毫米波（mmWave）通信进行检查。由于毫米波信号对阻塞的敏感性，视距（LoS）链路的存在在保证高质量通信方面起着至关重要的作用。为有效部署无人机并保障视距通信，提出了一种基于建筑物几何分析的无人机两阶段防遮挡部署方法。首先，利用建立的信号阻塞感知mmWave信道模型，提出了一种阻塞检测K-means（BT-K-means）算法，实现了无人机的用户分簇和初步部署。然后，针对路径损耗（PL）函数频繁局部振荡导致无人机难以找到最优位置的问题，提出了一种PL振荡感知的无人机三维坐标搜索算法，该算法能够避免信号阻塞，有效降低总PL。最后，通过仿真实验验证了该方法的有效性.
In this letter, an unmanned aerial vehicle (UAV) three-dimensional (3D) deployment problem for millimeter wave (mmWave) communications is examined. Due to the sensitivity of mmWave signals to blockages, the existence of line-of-sight (LoS) links plays a vital role in guaranteeing high quality communication. To deploy UAVs effectively and ensure LoS communications, we propose a two-stage anti-block UAV deployment method based on building geometric analysis. First, by employing the established signal blockage aware mmWave channel model, a blockage testing K-means (BT-K-means) algorithm is proposed to implement user clustering and preliminary deployment of UAVs. Then, to overcome the difficulty of finding the optimal location of a UAV due to frequent local oscillation of the path loss (PL) function, a PL oscillation-aware UAV 3D coordinate search algorithm is proposed, which can avoid signal blockages and effectively reduce the total PL. Finally, we verify the effectiveness of the proposed method through our simulation results.