A1 Journal article (refereed)
AoI-Energy Tradeoff for Data Collection in UAV-Assisted Wireless Networks (2024)


Zhang, X., Chang, Z., Hämäläinen, T., & Min, G. (2024). AoI-Energy Tradeoff for Data Collection in UAV-Assisted Wireless Networks. IEEE Transactions on Communications, 72(3), 1849-1861. https://doi.org/10.1109/tcomm.2023.3337400


JYU authors or editors


Publication details

All authors or editorsZhang, Xin; Chang, Zheng; Hämäläinen, Timo; Min, Geyong

Journal or seriesIEEE Transactions on Communications

ISSN0090-6778

eISSN1558-0857

Publication year2024

Publication date29/11/2023

Volume72

Issue number3

Pages range1849-1861

PublisherInstitute of Electrical and Electronics Engineers (IEEE)

Publication countryUnited States

Publication languageEnglish

DOIhttps://doi.org/10.1109/tcomm.2023.3337400

Publication open accessNot open

Publication channel open access


Abstract

Unmanned aerial vehicle (UAV)-assisted wireless communication systems are able to provide high-quality services and ubiquitous connectivity for massive Internet of Things (IoT) devices. In this paper, we study the Age of Information (AoI) and energy tradeoff in a system where an employed UAV performs data collection for multiple IoT nodes (INs). Bearing in mind the importance of AoI and energy consumption during the data collection process, we present a multi-objective optimization problem to minimize the AoI and UAV energy consumption. To explore the tradeoff between AoI and energy consumption, we jointly optimize the collection time, the UAV trajectory, and the duration of time slots. Due to the non-convexity of the formulated problem, we divide the main problem into three sub-problems and address them by leveraging successive convex approximation (SCA) and Lagrangian dual methods. Finally, we design a multi-variable fixed algorithm to iteratively solve the three sub-problems. Simulations are carried out to investigate the tradeoff between AoI and UAV energy consumption, revealing that reducing AoI and energy consumption simultaneously is unattainable. Furthermore, the convergence and validity of the proposed algorithm are presented and analyzed.


Keywordswireless data transmissionwireless networksInternet of thingsunmanned aerial vehiclesenergy consumption (energy technology)

Free keywordsdata collection; age of information; energy consumption; IoT


Contributing organizations


Ministry reportingYes

Reporting Year2023

JUFO rating3


Last updated on 2024-02-07 at 23:06