Sophia Antipolis, 25 April 2025
ETSI is pleased to announce the release of two new Group Reports on Reconfigurable Intelligent Surfaces (RIS). ETSI GR RIS 004 provides implementation and practical insights concerning RIS and ETSI GR RIS 005 studies RIS‑integrated MIMO systems, especially focused on diversity and multiplexing schemes.
ETSI Report on “Implementation and Practical Considerations” provides implementation and practical insights concerning the deployment of RIS. It includes RIS unit cell design, switching methods, RIS types, RIS controller, associated costs, field trials, and measurement methods. The contents serve as a reference point for relevant specifications and implementations of RIS-integrated systems.
ETSI Report on “Diversity and Multiplexing of RIS-aided Communications” focuses on diversity and multiplexing schemes using RIS. It highlights how RIS, similar to MIMO (Multiple-Input-and-Multiple-Output) technologies in LTE/5G, can provide additional performance gains. The report emphasizes the importance of understanding RIS-integrated MIMO systems and their impact on future cellular system design and standardization.
The ETSI RIS group has also issued updates for its three previously published reports, ETSI GR RIS 001 on “Use Cases, Deployment Scenarios and Requirements”, ETSI GR RIS 002 on “Technological Challenges and Impact on Architecture and Standards” and ETSI GR RIS 003 on “Communication Models, Channel Models, Channel Estimation, and Evaluation Methodology”, based on the latest advancements in RIS research and standardization.