UAV-Aided Dual-User Wireless Power Transfer: 3D Trajectory Design and Energy Optimization

Area of Science:

• Wireless Communication
• Robotics
• Energy Systems

Background:

• Unmanned aerial vehicles (UAVs) are crucial for extending the range and lifespan of wireless networks.
• Wireless power transfer (WPT) is vital for energy-constrained devices in the Internet of Things (IoT) and wireless sensor networks (WSNs).
• Designing optimal 3D trajectories for UAVs in WPT systems presents a significant challenge.

Purpose of the Study:

• To investigate a UAV-assisted dual-user WPT system.
• To maximize the total energy harvested by ground energy receivers (ERs).
• To optimize the UAV's 3D trajectory for a balance between energy consumption and WPT efficiency.

Main Methods:

• A UAV-mounted energy transmitter (ET) broadcasts wireless energy to ground ERs.
• The UAV's 3D trajectory is optimized by focusing on the relationship between its height and time.
• Calculus is employed to determine the total harvested energy and design the trajectory.

Main Results:

• The proposed trajectory design significantly enhances energy supply compared to conventional methods.
• Simulation results validate the effectiveness of the optimized 3D UAV trajectory.
• The system demonstrates improved WPT performance and prolonged network lifetime.

Conclusions:

• Optimized UAV 3D trajectory design is a promising approach for UAV-aided WPT.
• This method can enhance energy efficiency in future IoT and WSN deployments.
• The research contributes to the advancement of energy-efficient wireless communication systems.