Multi-Principal Spectrum Trading Incentive for UAV-Enabled Wireless Networks

This letter discusses the spectrum trading problem between UAVs acting as aerial access points and a macro base station (MBS). The study aims to address the complex game-theoretic interactions between the MBS and multiple UAVs to enhance the benefits for all parties involved. We propose a combined spectrum trading scheme for multiple UAV operators jointly requesting spectrum from the MBS. For each UAV operator, we introduce an optimal contract design problem based on cooperation and present a method utilizing greedy strategies and block coordinate descent to solve it. Compared to schemes that ignore composite contract, cooperative spectrum trading increases the transaction volume by 32.41% in the scenario we set.