期刊
ICT EXPRESS
卷 9, 期 3, 页码 385-397出版社
ELSEVIER
DOI: 10.1016/j.icte.2022.01.015
关键词
Air-to-ground (A2G) channel model; Placement; Trajectory; Unmanned aerial vehicle (UAV)
This paper investigates the utilization of unmanned aerial vehicles (UAVs) in communication networks and the need to optimize their locations or trajectories. It introduces representative air-to-ground (A2G) channel models and reviews recent research on UAV placement and trajectory optimization. Based on the findings, future research directions are suggested.
Unmanned aerial vehicles (UAVs) have been utilized extensively in communication networks due to their versatility and maneuverability. It is also necessary to optimize their locations or trajectories. Moreover, it is important to adopt an appropriate air-to-ground (A2G) channel model that can reflect the practical environment well. In this paper, we first introduce the representative A2G channel models widely adopted in the literature and then review recent works on UAV placement and trajectory optimization from the perspective of A2G channel models. Finally, we present future research directions based on trends and lessons derived from our review of the existing studies. & COPY; 2022 The Author(s). Published by Elsevier B.V. on behalf of The Korean Institute of Communications and Information Sciences. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
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