The unmanned aerial vehicle base station (UAV-BS) plays an important role and has unique advantages in many networking application. The current base station placement and coverage methods are mainly aimed at static networks (assuming that the network nodes are in a static state) and seek global coverage of the UAV-BS to the ground terminals. However, in practical applications, the network nodes are mobile, and global coverage is sometimes difficult to achieve. This paper shows a new solution for inadequate area coverage and random movement of ground terminals. The UAV-BS mobility strategy is used, combined with the delay-tolerant service request method. Using a test platform based on the ONE simulator, the proposed method is simulated and analyzed, and the results confirm that the call service request success rate is significantly improved. In the simulation environment, using the delay-tolerant service request and certain mobility strategies brings an average increase of 5.9% and 10.82% in the call service request success rate, and even increases by more than 20% in some mobile scenarios. Simultaneously, the delay distribution of the call service requests indicates that the proportion of call services with real-time request is optimized, which shows the positive coverage effect of the new method.

无人机基站（UAV-BS）在众多组网应用中发挥着重要作用并具有独特的优势。目前的基站布局和覆盖方式主要针对静态网络（假设网络节点处于静态），寻求无人机基站到地面终端的全局覆盖。但在实际应用中，网络节点具有移动性，有时难以实现全球覆盖。本文展示了一种针对区域覆盖不足和地面终端随机移动的新解决方案。使用UAV-BS移动策略，结合延迟容忍服务请求方法。使用基于ONE模拟器的测试平台，对所提方法进行仿真分析，结果证实呼叫服务请求成功率显着提高。在仿真环境下，使用延迟容忍服务请求和一定的移动策略，呼叫服务请求成功率平均提高了5.9%和10.82%，在某些移动场景下甚至提高了20%以上。同时，呼叫服务请求的延迟分布表明具有实时请求的呼叫服务比例得到优化，显示了新方法的积极覆盖效果。