Journal
CHINESE JOURNAL OF AERONAUTICS
Volume 35, Issue 9, Pages 95-105Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.cja.2021.09.017
Keywords
Block coordinate descent; Data collection; Dinkelbach method; Energy efficiency; Internet of Things (IoT); Unmanned aerial vehicle
Categories
Funding
- National Key Research and Development Program of China
- National Natural Science Foundation of China
- China Postdoctoral Science Foundation
- Open Research Fund of National Mobile Communications Research Laboratory, Southeast University
- [2020YFB1807003]
- [61901378]
- [61941119]
- [BX20190287]
- [2020M683563]
- [2022D01]
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This paper aims to maximize the system energy efficiency by jointly optimizing the UAV trajectory and IoT communication resources, considering both the IoT transmission energy and UAV propulsion energy. Extensive simulation results confirm the effectiveness of the proposed method.
Internet of Things (IoT) can be conveniently deployed while empowering various applications, where the IoT nodes can form clusters to finish certain missions collectively. As energyefficient operations are critical to prolong the lifetime of the energy-constrained IoT devices, the Unmanned Aerial Vehicle (UAV) can be dispatched to geographically approach the IoT clusters towards energy-efficient IoT transmissions. This paper intends to maximize the system energy efficiency by considering both the IoT transmission energy and UAV propulsion energy, where the UAV trajectory and IoT communication resources are jointly optimized. By applying largesystem analysis and Dinkelbach method, the original fractional optimization is approximated and reformulated in the form of subtraction, and further a block coordinate descent framework is employed to update the UAV trajectory and IoT communication resources iteratively. Extensive simulation results are provided to corroborate the effectiveness of the proposed method.(c) 2021 Chinese Society of Aeronautics and Astronautics. Production and hosting by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
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