  Unmanned aerial vehicles (UAVs) have the potential to overcome the deployment
constraint of Internet of Things (IoT) in remote or rural area. Wirelessly
powered communications (WPC) can address the battery limitation of IoT devices
through transferring wireless power to IoT devices. The integration of UAVs and
WPC, namely UAV-enabled Wireless Powering IoT (Ue-WPIoT) can greatly extend the
IoT applications from cities to remote or rural areas. In this article, we
present a state-of-the-art overview of Ue-WPIoT by first illustrating the
working flow of Ue-WPIoT and discussing the challenges. We then introduce the
enabling technologies in realizing Ue-WPIoT. Simulation results validate the
effectiveness of the enabling technologies in Ue-WPIoT. We finally outline the
future directions and open issues.
