Trajectory optimization for mobile access point

摘要

We consider the problem of trajectory optimization of an Unmanned Air Vehicle (UAV) that is equipped with an wireless access point (AP) to collect data from the ground users. The goal is to find constant altitude path and velocity of the UAV during the flight time such that the weighted sum-rate of the users is maximized. Two approaches are used in formulating this problem, one involves functional optimization while the other is based on the optimal control approach. Non-convex nature of the objective function makes it difficult to obtain optimal solutions in general. However, we provide some analytical properties of the optimal trajectories in the large flying time regime, which will provide the validation for the obtained numerical results.