Monte Carlo Modelling of mmWave 6G Systems for Shared Spectrum Deployments

The evolving 6G systems will push the mobile spectrum frontier well into the mmWave and THz bands, i.e., from 24 GHz to 275 GHz. This calls for a better understanding of future spectrum sharing and co-existence scenarios that involve mobile systems in those frequency ranges. The European regulatory establishment has started to address such studies with an initial focus on 5G mobile systems sharing in 26 GHz band. This paper takes a further step by modelling the evolving 6G systems across a wider mmWave range of 26-71 GHz. The paper discusses radio wave propagation prediction in mmWave bands and uses Monte Carlo simulations to estimate the probability of interference between mobile and fixed systems under different assumptions. In particular, the paper shows the importance of terrain elevation modelling in spectrum sharing studies of future 6G systems.