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arXiv · 2510.09478

Site-Specific RIS Deployment in Cellular Networks via Calibrated Ray Tracing

Sina Beyraghi·Javad Shabanpour·Giovanni Geraci·Paul Almasan·Angel Lozano
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Abstract

This work introduces a fully-automated RIS deployment strategy validated through a digital twin, powered by Sionna ray tracing, of a UK city. On a scene calibrated with measured data, the method jointly optimizes RIS placement, orientation, configuration, and BS beamforming across 4G, 5G, and hypothetical 6G frequencies. Candidate RIS sites are identified via scattering-based rays, while user clustering reduces deployment overhead. Results show that meaningful coverage enhancement requires dense, large-aperture RIS deployments, raising questions about the practicality and cost of large-scale RIS adoption.

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Sina Beyraghi, Javad Shabanpour, Giovanni Geraci, Paul Almasan, Angel Lozano. 2025-10-10. Site-Specific RIS Deployment in Cellular Networks via Calibrated Ray Tracing. https://arxiv.org/abs/2510.09478

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