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Unmanned aerial vehicles (UAVs) are widely deployed to enhance the wirelessnetwork capacity and to provide communication services to mobile users beyondthe infrastructure coverage. Recently, with the help of a promising technologycalled network virtualization, multiple service providers (SPs) can share theinfrastructures and wireless resources owned by the mobile network operators(MNOs). Then, they provide specific services to their mobile users using theresources obtained from MNOs. However, wireless resource sharing among SPs ischallenging as each SP wants to maximize their utility/profit selfishly whilesatisfying the QoS requirement of their mobile users. Therefore, in this paper,we propose joint user association and wireless resource sharing problem in thecell-free UAVs-assisted wireless networks with the objective of maximizing thetotal network utility of the SPs while ensuring QoS constraints of their mobileusers and the resource constraints of the UAVs deployed by MNOs. To solve theproposed mixed-integer non-convex problem, we decompose the proposed probleminto two subproblems: users association, and resource sharing problems. Then, atwo-sided matching algorithm is deployed in order to solve users associationproblem. We further deploy the whale optimization and Lagrangian relaxationalgorithms to solve the resource sharing problem. Finally, extensive numericalresults are provided in order to show the effectiveness of our proposedalgorithm.

A Business Model for Resource Sharing in Cell-Free UAVs-Assisted Wireless Networks