A simplified downlink interference model for low- altitude three-dimensional networking scenarios

To better ensure the performance of low-altitude networking, the antenna main lobe can be used to cover low-altitude. Compared to traditional ground networking scenarios, it faces interference challenges such as a large number of interfering cells, a wider range of interference impact, and high interference susceptibility. The layered characteristics of the low-altitude three-dimensional networking were analyzed, and its interference characteristics were revealed. Based on these characteristics, combined with the relationship of multi-cell triangular projection, a mathematically model was developed for the downlink interference in low-altitude networking with upward-tilted antennas. This model could obtain the performance of low-altitude coverage using only the angle of tilt and the relative position information between users and base stations, thereby simplifying the process of performance and interference analysis in low-altitude scenarios.