Dynamic Ray Tracing: Introduction and Concept

Radio applications in vehicular environment are becoming popular due to the development of autonomous driving and safety enforcement technologies that make use of vehicle-to-vehicle, vehicle-to-infrastructure as well as of radar solutions. Due the large variety of possible environment configurations, and to the highly dynamic characteristics of the environment, specific deterministic radio propagation models must be developed to assist the design and simulation of such vehicular applications. In the present work we present a dynamic ray tracing model that can provide a multidimensional channel prediction, including Doppler's shifts, with a single run on the base of a suitable 'dynamic environment database' that describes a scene with moving objects and terminals. The proposed approach applied to a reference street canyon scenario with a large moving object representing a bus is shown to yield realistic estimates of the channel's power-Doppler profiles.