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Title	An Adaptive Uav Positioning Model For Sustainable Smart Transportation
ID_Doc	7400
Authors	Aloqaily M.; Bouachir O.; Al Ridhawi I.; Tzes A.
Year	2022
Published	Sustainable Cities and Society, 78
DOI	http://dx.doi.org/10.1016/j.scs.2021.103617
Abstract	Several research works are being considered to adopt the use of UAVs to support smart transportation systems due to their movement flexibility. In this article, a UAV-supported vehicular network solution is developed which considers both power and coverage limitations of UAVs to attain the vision of sustainable smart cities. Nodes communicate with each other through the 5G connection and ad-hoc links. The solution is solved for as a predictive optimization problem that determines the height of the UAV to dynamically change it to ensure the optimal communication coverage of vehicular nodes. Moreover, the solution considers UAV energy consumption constraints when setting the optimal height of the UAV. Additionally, the optimal distance between every two adjacent UAVs is also considered to avoid any coverage overlapping while protecting their connectivity. Extensive evaluations were considered in terms of both implementation and simulation to test the proposed model. Evaluation results show that the proposed solution can predict vehicle traffic patterns accurately to ensure proper adjustments of the UAV height. Moreover, network coverage is ensured for areas with and without fixed BS availability with the support of the self-positioning UAVs while adhering to QoS requirements. © 2021 Elsevier Ltd
Author Keywords	Adaptive positioning; AI; Sustainable smart transportation; UAVs

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