Extending UAV-enabled wireless power transfer to multiple/multi-antenna UAV energy transmitters

Develop models and algorithms for UAV-enabled wireless power transfer with multiple unmanned aerial vehicle energy transmitters and/or multi-antenna UAV energy transmitters, including trajectory, hovering, and beamforming/scheduling designs that generalize single-antenna, single-UAV results to the broader setup.

Background

The paper discusses UAV-mounted energy transmitters that exploit controllable mobility and line-of-sight links to improve wireless power transfer efficiency. For a single-antenna UAV-ET, hovering at a fixed location maximizes total harvested energy, and a hover-and-fly trajectory optimizes fairness across energy receivers.

These single-UAV, single-antenna results do not address systems with multiple UAV energy transmitters or multi-antenna configurations, which are practically important for scalable and efficient energy delivery. The authors explicitly note that extending to these broader setups remains unaddressed.