Dynamic Coherence-Based EM Ray Tracing Simulations in Vehicular Environments

5G applications have become increasingly popular in recent years as the spread of 5G network deployment has grown. For vehicular networks, mmWave band signals have been well studied and used for communication and sensing. In this work, we propose a new dynamic ray tracing algorithm that exploits spatial and temporal coherence. We evaluate the performance by comparing the results on typical vehicular communication scenarios with NYUSIM, which builds on stochastic models, and Winprop, which utilizes the deterministic model for simulations with given environment information. We compare the performance of our algorithm on complex, urban models and observe the reduction in computation time by 60% compared to NYUSIM and 30% compared to Winprop, while maintaining similar prediction accuracy.