Trajectory Planning and Resource Allocation of Multiple UAVs for Data Delivery in Vehicular Networks

This letter jointly investigates the trajectory and radio resource optimization for multiple unmanned aerial vehicles (UAVs) to fully deliver critical data in vehicular networks during disaster situations. We aim to minimize the number of deployed UAVs to fully serve all vehicles. The formulated problem is generally NP-hard. To solve it, we employ a sequence of convex approximates. Then, we develop an efficient algorithm to sequentially solve this problem. Our numerical results demonstrate the effectiveness of our proposed design and show that during the mission time, the UAVs adapt their velocities in order to fulfill the requirement of each vehicle.