Joint Altitude, Beamwidth, Location and Bandwidth Optimization for UAV-Enabled Communications

TL;DR

This paper proposes a joint optimization framework for UAV-assisted wireless communications, focusing on minimizing uplink power by adjusting UAV altitude, beamwidth, location, and ground terminal bandwidth and power, using an iterative algorithm.

Contribution

It introduces a novel joint optimization approach for UAV parameters and ground terminal resources to reduce uplink power consumption in UAV-enabled networks.

Findings

Significant uplink power savings achieved

Proposed iterative algorithm demonstrates low complexity

Joint optimization outperforms non-optimized schemes

Abstract

This letter investigates an uplink power control problem for unmanned aerial vehicles (UAVs) assisted wireless communications. We jointly optimize the UAV's flying altitude, antenna beamwidth, UAV's location and ground terminals' allocated bandwidth and transmit power to minimize the sum uplink power subject to the minimal rate demand. An iterative algorithm is proposed with low complexity to obtain a suboptimal solution. Numerical results show that the proposed algorithm can achieve good performance in terms of uplink sum power saving.