Reconfigurable, Intelligent, and SustainableWireless Environments for 6G Smart Connectivity
Emilio Calvanese Strinati, George C. Alexandropoulos, Henk Wymeersch,, Benoit Denis, Vincenzo Sciancalepore, Raffaele D'Errico, Antonio Clemente,, Dinh-Thuy Phan-Huy, Elisabeth De Carvalho, Petar Popovski

TL;DR
This paper explores the potential of Reconfigurable Intelligent Surfaces (RIS) in 6G networks to create smart, sustainable wireless environments through innovative paradigms like wireless environment as a service and performance-boosted areas.
Contribution
It introduces new RIS-based networking concepts and discusses their technological enablers, challenges, and integration into the O-RAN architecture for future 6G systems.
Findings
RIS enables programmable control of wireless environments.
Proposed paradigms can optimize conflicting connectivity objectives.
RIS integration enhances 6G network flexibility and sustainability.
Abstract
Various visions on the forthcoming sixth Generation (6G) networks point towards flexible connect-and-compute technologies to support future innovative services and the corresponding use cases. 6G should be capable to accommodate ever-evolving and heterogeneous applications, future regulations, and diverse user-, service-, and location-based requirements. A key element towards building smart and energy sustainable wireless systems beyond 5G is the Reconfigurable Intelligent Surface (RIS), which offers programmable control and shaping of the wireless propagation environment. Capitalizing on this technology potential, in this article we introduce two new concepts: i) wireless environment as a service, which leverages a novel RIS-empowered networking paradigm to trade off diverse, and usually conflicting, connectivity objectives; and ii) performance-boosted areas enabled by RIS-based…
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