Channel Modelling for UAV Air-to-Ground Communication

After a brief literature review, this paper presents the main advantages and drawbacks of UAV and IoT cellular network communication. Nowadays, UAVs are increasingly exploited in urban environments. However, optimizing the performance of UAV-BS cellular networks for coverage remains a significant challenge for communication system design engineers. For this reason, the air-to-ground (A2G) and ground-to-air (G2A) wireless propagation channels are analytically modeled by identifying the optimal geometrical position. This paper investigates channel communication modeling in urban environments. Different cases parameterized by the coverage zone radius, assumed as the A2G channel for two different scenarios, are simulated by assessing the line-of-sight (LOS) probability (PLOS) and path loss. The obtained results enable the identification of the optimal elevation angle corresponding to the expected PLOS and the optimal altitude for minimal path loss. UAV-BS cellular network performance is illustrated, emphasizing that the UAV cellular network is potentially useful for monitoring and remote control.