Power Minimization for Data Collection in UAV-Assisted IoT Wireless Sensor Networks

Power consumption is being an interest for the IoT wireless sensor networks (WSNs). Unmanned aerial vehicle (UAV) assisting data collection has been a potential candidate to meet the high demands from WSN, while reducing the power consumption. This paper considers a WSN where a UAV supports to collect the sensed data from sensors, such that the power consumption for sensors in data transmission is minimized. The resulting problem is non-convex, and thus it is hard to be directly solved. By exploiting the approximation method, we can solve the problem efficiently and achieve at least a local optimal solution. The numerical results verify the effectiveness of the proposed method.