SoarNet

A comprehensive survey on aerial mobile edge computing: Challenges, state-of-the-art, and future directions

“…In order to continuously serve users, it is essential to prolong the lifetime of UAVs. In this context, extensive research efforts have been devoted to the wireless charging technology for UAVs [192,193,194,195]. For example, N. Ansari et al [194] propose a novel wireless charging architecture based on the free space optics (FSO), where the energy and data streams can be transferred from the AP to UAVs by utilizing the laser beams via the FSO links.…”

“…In this context, extensive research efforts have been devoted to the wireless charging technology for UAVs [192,193,194,195]. For example, N. Ansari et al [194] propose a novel wireless charging architecture based on the free space optics (FSO), where the energy and data streams can be transferred from the AP to UAVs by utilizing the laser beams via the FSO links. Furthermore, for the laser-powered UAVs subject to the energy harvesting constraint, a downlink throughput maximization problem is investigated in [195], where the UAV trajectory and transmit power are jointly optimized.…”

“…Although the above-mentioned studies have provided some design insights for the development of UAVs' charging technology, most of them are deduced in theory or at the stage of simulations. Many external factors, such as the atmospheric attenu-ation, turbulence and weather conditions, need to be taken into account in the practical deployment [194]. In addition, when the wireless charging technology is applied in aerial MEC, some challenging problems like resource allocation and trajectory design need to be jointly considered.…”

Optimizing Number, Placement, and Backhaul Connectivity of Multi-UAV Networks

“…However, the paper only focused on the access link in the drone-assisted network without considering the backhaul link. Ansari et al [35] proposed a drone communications framework, in which free space optical links are employed to serve as the backhaul link between UAV and ground base stations. They used the free space link to transfer data and energy to the UAV simultaneously and thus provision highspeed backhaul as well as prolong the UAV's flight.…”

“…As discussed above, existing literature either (i) do not consider the backhaul connectivity [10], [13], (ii) assume the "always" existence of backhaul connectivity via satellite links and free space optical links [33], [35], [36], or (iii) assume a trivial two-hop backhaul connectivity using one UAV [39]- [42]. To address the research gap in the current literature, this paper studies the joint optimization problem of number, placement, and backhaul connectivity of UAV networks.…”