Paper Info
Title
3D UAV Trajectory and Communication Design for Simultaneous Uplink and Downlink Transmission
Abstract
In this paper, we investigate the unmanned aerial vehicle (UAV)-aided simultaneous uplink and downlink transmission networks, where one UAV acting as a disseminator is connected to multiple access points (AP), and the other UAV acting as a base station (BS) collects data from numerous sensor nodes (SNs). The goal of this paper is to maximize the system throughput by jointly optimizing the 3D UAV trajectory, communication scheduling, and UAV-AP/SN transmit power. We first consider a special case where the UAV-BS and UAV-AP trajectories are pre-determined. Although the resulting problem is an integer and non-convex optimization problem, a globally optimal solution is obtained by applying the polyblock outer approximation (POA) method based on the problem's hidden monotonic structure. Subsequently, for the general case considering the 3D UAV trajectory optimization, an efficient iterative algorithm is proposed to alternately optimize the divided sub-problems based on the successive convex approximation (SCA) technique. Numerical results demonstrate that the proposed design is able to achieve significant system throughput gain over the benchmarks. In addition, the SCA-based method can achieve nearly the same performance as the POA-based method with much lower computational complexity.
Year
DOI
Venue
2020
10.1109/TCOMM.2020.3003662
IEEE Transactions on Communications
Keywords
DocType
Volume
UAV,communication design,IoT,3D trajectory optimization,monotonic optimization
Journal
68
Issue
ISSN
Citations 
9
0090-6778
15
PageRank 
References 
Authors
0.48
0
4
Name
Order
Citations
PageRank
Meng Hua11228.93
Luxi Yang21180118.08
Qingqing Wu3222890.86
A. Lee Swindlehurst411211.23