A Study On Antenna Polarization Plane for UL/DL Drone Access Network

Drones are deployed as aerial base stations in areas where ground base stations are not available, such as disaster areas, to provide services to users. However, when multiple drones are deployed, the SIR (Signal-to-Interference Ratio) is degraded by the ground reflection in the environment where UL (UpLink) and DL (DownLink) concurrently exist. In this paper, circular polarization, whose polarization plane characteristics change before and after the ground reflection, is applied to the communication link between the drone and the user to improve the SIR. Numerical evaluation shows the effectiveness of the proposed method.