Thanks to the recent advancements in drone technology, it has become viable
and cost-effective to quickly deploy small cells in areas of urgent needs by
using a drone as a cellular base station. In this paper, we explore the benefit
of dynamically repositioning the drone base station in the air to reduce the
distance between the BS and the mobile user equipment, thereby improving the
spectral efficiency of the small cell. In particular, we propose algorithms to
autonomously control the repositioning of the drone in response to users
activities and movements. We demonstrate that, compared to a drone hovering at
a fixed location, dynamic repositioning of the drone moving with high speed can
increase spectral efficiency by 15\%. However, considering the tradeoff between
spectral efficiency and energy efficiency of the drone, we show that 10.5\%
spectral efficiency gain can be obtained without negatively affecting energy
consumption of the drone.

本研究论文探讨了使用无人机作为移动基站在紧急区域快速部署小型蜂窝网络的好处，并提出了一种算法来自主控制无人机的重新定位以提高小型蜂窝网络的频谱效率，同时考虑了频谱效率和无人机能量效率之间的权衡，可以获得 10.5％的频谱效率增益。