无人机辅助通信能量效率最大化
首发时间:2021-05-27
摘要:目前,无人机与新一代蜂窝移动通信技术相结合的相关研究具有广阔前景。本文研究了在单蜂窝通信系统进行边缘卸载的无人机的能量效率最大化。考虑到无人机圆周飞行时对地面基站所服务移动终端的干扰以及无人机与地面基站的正交频谱共享,本文建立了无人机能量效率最大化模型,并应用了迭代优化算法。通过共同优化无人机的圆周飞行速度,无人机与地面基站之间的带宽分配比例,以及不同服务源所服务移动终端的地理区域划分这三大影响因素来最大化无人机能量效率,并得出这四者间的变化规律。实验结果表明,通过调节无人机圆周飞行时无人机与地面基站的带宽分配比例,无人机在对地面基站进行边缘卸载时可以实现最大化的能量效率。
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Energy-Efficient Maximization of UAV-Assisted Communication
Abstract:At present, the related research on the combination of UAV and the new generation of cellular mobile communication technology has broad prospects. This paper studies the energy efficiency maximization of the UAV that perform edge offloading in a single cellular communication system. Taking into account the interference of the UAV to mobile terminals served by the ground station when flying in a circle and the orthogonal spectrum sharing between the UAV and the ground station, this paper establishes an energy efficiency maximization model for the UAV and applies an iterative optimization algorithm.The energy efficiency of the UAV is maximized by jointly optimizing the three influencing factors, namely, the circular flight speed of the UAV, the bandwidth allocation ratio between the UAV and the ground base station, and the geographical division of mobile terminals served by different service sources, and the change rule among the above four factors is obtained. The experimental results show that by adjusting the bandwidth allocation ratio between the UAV and the ground base station when the UAV is flying in a circle, the energy efficiency can be maximized when the UAV carries out edge offloading on the ground base station..
Keywords: signal and information processing UAV-assisted communication energy efficiency
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