协同双频无人机编队轨迹优化
Trajectory Optimization for Cooperative Dual-band UAV Swarms
AI总结：
本文针对带宽需求大且容忍延迟的应用，提出双频无人机轨迹优化框架，通过混合非线性规划问题优化无人机路径和停靠点，以最小化总服务时间。
摘要：
无人驾驶航空器（UAVs）在多样无线通信领域中获得了广泛 popularity。由于其能够提供视距链路的能力，它们可以作为高空飞行中继器，支持地面节点之间的通信。随着物联网的蓬勃发展，多种新型应用不断涌现。本文聚焦于带宽需求大且容忍延迟的应用，其中多个收发器对需要无人机的支持来完成其传输。为此，无人机有可能使用两种不同的频段，即典型的微波频段和高速毫米波频段。本文开发了一个通用框架，将无人机分配给支持的收发器并优化其轨迹，以最小化总服务时间的加权函数。考虑到中继消息所需的时间和无人机飞行时间，一个混合非线性规划问题被提出，旨在找到无人机停靠点以转发数据给接收器。然后开发了一种迭代方法来解决该问题。首先，通过混合线性规划问题最优解决来确定每架可用无人机的路径。然后执行分层迭代搜索以提高无人机停靠点位置并减少服务时间。所提框架的行为和优势在选定场景中进行了展示。
英文摘要：
Unmanned aerial vehicles (UAVs) have gained a lot of popularity in diverse wireless communication fields. They can act as high-altitude flying relays to support communications between ground nodes due to their ability to provide line-of-sight links. With the flourishing Internet of Things, several types of new applications are emerging. In this paper, we focus on bandwidth hungry and delay-tolerant applications where multiple pairs of transceivers require the support of UAVs to complete their transmissions. To do so, the UAVs have the possibility to employ two different bands namely the typical microwave and the high-rate millimeter wave bands. In this paper, we develop a generic framework to assign UAVs to supported transceivers and optimize their trajectories such that a weighted function of the total service time is minimized. Taking into account both the communication time needed to relay the message and the flying time of the UAVs, a mixed non-linear programming problem aiming at finding the stops at which the UAVs hover to forward the data to the receivers is formulated. An iterative approach is then developed to solve the problem. First, a mixed linear programming problem is optimally solved to determine the path of each available UAV. Then, a hierarchical iterative search is executed to enhance the UAV stops' locations and reduce the service time. The behavior of the UAVs and the benefits of the proposed framework are showcased for selected scenarios.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
