A4 Article in conference proceedings
AoI-Minimal Power and Trajectory Optimization for UAV-Assisted Wireless Networks (2023)

Zhang, X., Hu, Y., Chang, Z., & Min, G. (2023). AoI-Minimal Power and Trajectory Optimization for UAV-Assisted Wireless Networks. In WCNC 2023 : Proceedings of the IEEE Wireless Communications and Networking Conference. IEEE. IEEE Wireless Communications and Networking Conference. https://doi.org/10.1109/WCNC55385.2023.10118798

JYU authors or editors

Publication details

All authors or editors: Zhang, Xin; Hu, Yun; Chang, Zheng; Min, Geyong

Parent publication: WCNC 2023 : Proceedings of the IEEE Wireless Communications and Networking Conference

Place and date of conference: Glasgow, United Kingdom, 26.-29.3.2023

ISBN: 978-1-6654-9123-5

eISBN: 978-1-6654-9122-8

Journal or series: IEEE Wireless Communications and Networking Conference

ISSN: 1525-3511

eISSN: 1558-2612

Publication year: 2023

Publication date: 12/05/2023

Publisher: IEEE

Publication country: United States

Publication language: English

DOI: https://doi.org/10.1109/WCNC55385.2023.10118798

Publication open access: Not open

Publication channel open access: 

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/92684

Abstract

In this paper, we consider an Internet of Things (IoT) system where the employed unmanned aerial vehicle (UAV) carries edge computing server to perform data collection and execution for multiple IoT nodes (INs). For such a network, UAV trajectory and uplink transmission power optimization are integrated to minimize the Age of Information (AoI) of the results returned to all ground INs subject to energy consumption limitations. Due to the non-convex nature of the formulated problem, it is divided into two subproblems, which are respectively solved by Lagrangian dual and convex optimization methods, and block coordinate descent method is applied to solve the overall problem. Simulation results show that the proposed algorithm achieves the lowest average AoI of all INs compared with other schemes. The results also reveal the relationship between the average AoI and the number of INs and advantages of the proposed scheme.

Keywords: Internet of things; wireless networks; wireless data transmission; unmanned aerial vehicles; energy consumption (energy technology); optimisation

Contributing organizations

Ministry reporting: Yes

VIRTA submission year: 2023

JUFO rating: 1