Interference Analysis for Mobile Cellular and LEO Satellites Co-existence

Aiming at the problem that 5G uplink signal interferes with satellite earth station in satellite-terrestrial integrated networks, this paper proposes interference modeling and performance analysis methods based on stochastic geometry. The successful communication probability (SCP) of satellite-terrestrial is defined as the performance metrics of satellite down-link in the interference environment. The closed-form solutions of SCP are derived using Lutz channel model. Combined with the actual parameters, the proposed methods are numerically simulated, and the factors affecting the receiver performance have been quantified. The simulation results show that the density of interferers and the SINR threshold are two key factors restricting the performance. The research results of this paper provide a theoretical basis for the engineering and application of interference coordination in satellite-terrestrial integrated networks.