Smart Wireless Environments Enabled by RISs: Deployment Scenarios and Two Key Challenges
George C. Alexandropoulos, Maurizio Crozzoli, Dinh-Thuy Phan-Huy, and Konstantinos D. Katsanos, Henk Wymeersch, Petar Popovski and, Philippe Ratajczak, Yohann B\'en\'edic, Marie-Helene Hamon and, Sebastien Herraiz Gonzalez, Raffaele D'Errico, Emilio Calvanese, Strinati

TL;DR
This paper explores deployment scenarios for RIS-enabled smart wireless environments, highlighting key challenges like influence area and bandwidth, supported by simulations and measurements, to guide future deployment strategies.
Contribution
It categorizes RIS deployment scenarios based on performance goals and discusses architectural requirements, introducing two novel challenges with preliminary results.
Findings
Identification of deployment strategies for different performance objectives
Preliminary simulation results on RIS influence area and bandwidth
Reflectarray measurements supporting the challenges discussed
Abstract
Reconfigurable Intelligent Surfaces (RISs) constitute the enabler for programmable propagation of electromagnetic signals, and are lately being considered as a candidate physical-layer technology for the demanding connectivity, reliability, localization, and sustainability requirements of next generation wireless communications networks. In this paper, we present various deployment scenarios for RIS-enabled smart wireless environments that have been recently designed by the ongoing EU H2020 RISE-6G project. The scenarios are taxonomized according to performance objectives, in particular, connectivity and reliability, localization and sensing, as well as sustainability and secrecy. We identify various deployment strategies and sketch the core architectural requirements in terms of RIS control and signaling, depending on the RIS hardware architectures and their respective capabilities.…
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Taxonomy
TopicsAdvanced Wireless Communication Technologies · Underwater Vehicles and Communication Systems · Satellite Communication Systems
