Toward Real-Time Digital Twins of EM Environments: Computational Benchmark of Ray Launching Software

TL;DR

This paper presents a computational benchmark for ray-launching software used in real-time digital twins of electromagnetic environments, enabling better evaluation of simulation performance in urban wireless scenarios.

Contribution

It introduces a standardized benchmark for ray-based propagation simulations, facilitating performance evaluation and optimization in real-time digital twin applications.

Findings

Ray-launching software performance varies with scenario complexity

Diffuse scattering impacts computational time significantly

Benchmark provides a basis for comparing different ray-based solutions

Abstract

Digital Twin has emerged as a promising paradigm for accurately representing wireless communication electromagnetic environments. The resulting virtual representation of reality facilitates comprehensive insights into the propagation environment, empowering multi-layer decision-making processes at the physical communication level. This paper investigates the impact of ray-based model simulation within real-time Digital Twins. A benchmark for ray-based propagation simulations is presented to evaluate computational time, considering two urban scenarios characterized by different mesh complexity, single and multiple wireless link configurations, and simulations with/without diffuse scattering. Exhaustive empirical analyses are performed showing the behavior of different ray-based solutions. By offering standardized simulations and scenarios, this work provides a technical benchmark for practitioners involved in the implementation of real-time Digital Twins and optimization of ray-based propagation models.