The ability to operate anywhere, anytime, as well as their capability to hover and carry cargo on board make Unmanned Aerial Vehicles (UAVs) suitable platforms to act as Flying Gateways (FGWs) to the Internet. The problem is the optimal placement of the FGWs within the flying network, such that the Quality of Service (QoS) offered is maximized. The literature has been focused on optimizing the placement of the Flying Access Points (FAPs), which establish high-capacity small cells to serve the users on the ground, overlooking the backhaul network design, including the FGW placement. The FGW placement problem is exacerbated in highly dynamic flying networks, where the dynamic traffic demand and the movements of the users may induce frequent changes in the placement of the FAPs. The main contribution of this paper is a fast gateway placement (F-GWP) algorithm for flying networks that determines the optimal position of a FGW. With F-GWP, backhaul communications paths with high enough capacity are established between the FAPs and the FGW, in order to accommodate the traffic demand of the users on the ground. Simulation and experimental results show F-GWP is two orders of magnitude faster than its state of the art counterpart, while ensuring the same flying network performance.
翻译:问题在于能否在飞行网络中最佳地安置FGW, 从而最大限度地提高服务质量(QOS),文献的重点是优化飞行接入点(FAPs)的定位,该点建立能为地面用户服务的高容量小型小细胞,俯视FAPs和FGW等后台网络设计,包括FGW的定位。FGW的定位问题在高度动态的飞行网络中加剧,因为用户的动态交通需求和移动可能会导致FAP的定位发生频繁变化。本文的主要贡献是快速网关定位(F-GWP)计算飞行网络的算法,确定FGW的最佳位置。F-GWP和FGW之间建立了足够高容量的后台通信路径,以适应用户在FAPs和FGW之间的流量需求。Sim和FGW的运行速度要快,同时确保其地面的同步性能。Simmal和FW的运行速度要快,同时保证其同步性能的两次实验性能。