Joint cooperative caching and power control for UAV-assisted internet of vehicles

In view of the current problems of spectrum resource scarcity, return congestion, and insufficient energy utilization in the unmanned aerial vehicle (UAV)-assisted Internet of Vehicles (IoV), this paper investigates the cooperative caching and power control, and proposes a joint optimization method...

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Bibliographic Details
Published in:Scientific reports 2024-04, Vol.14 (1), p.9341-9341, Article 9341
Main Authors: Wang, Weiguang, Liu, Yang, Dai, Yusheng, He, Yixin
Format: Article
Language:English
Subjects:
639/166
639/166/987
Energy efficiency
Energy utilization
Humanities and Social Sciences
multidisciplinary
Optimization
Science
Science (multidisciplinary)
Unmanned aerial vehicles
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Summary:In view of the current problems of spectrum resource scarcity, return congestion, and insufficient energy utilization in the unmanned aerial vehicle (UAV)-assisted Internet of Vehicles (IoV), this paper investigates the cooperative caching and power control, and proposes a joint optimization method to improve the overall Energy Efficiency (EE) . In this method, we first propose a communication establishment threshold to control the V2V communication distance and serve as a joint optimization factor. Then we derive the closed form expressions of offloading ratio and EE of the UAV-assisted IoV, and formulate the optimization problem of maximizing EE. Due to the coupling relationship between caching strategy and transmission power, it is difficult for us to directly solve the optimization problem. Furthermore, we propose an alternating optimization algorithm for solving the optimization problem. Finally, the experimental simulation compare the propose joint optimization method with other existing optimization methods, and the simulation results prove the effectiveness and superiority of the propose joint optimization method.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-024-59823-9