Impact of Base Station Density and Altitude on Transmission Performance in Millimeter-Wave UAV Communications

A recent approach to expanding the coverage of 6G networks and enhancing disaster preparedness is the use of wireless networks based on unmanned aerial vehicles (UAVs), which can be positioned independent of ground conditions and provide line-of-sight communication with a high probability. In wireless communication using UAVs, propagation attenuation and interference vary significantly depending on UAV density and flight position. Therefore, understanding their quantitative effects on communication quality is crucial. Moreover, assuming the use of high-frequency bands, blockage also occurs; therefore, its impact must be evaluated. In this study, we evaluated the outage probability and throughput in millimeter-wave UAV wireless communication by varying UAV density and altitude using computer simulations. In particular, we clarify the effects of blockages specific to high-frequency bands on these performance criteria.