The recent developments in the field of wireless communication and IoT technologies are significantly influenced by advancements in Reconfigurable Intelligent Surfaces (RIS) and Ambient Internet of Things (A-IoT). These technologies are paving the way for more energy-efficient, scalable, and cost-effective solutions for future wireless networks. Multi-layer RIS technology, in particular, is emerging as a revolutionary approach, enabling multiple-input multiple-output (MIMO) communication, computation, and wireless power transfer (WPT) at the network edge. This paradigm shift towards an all-wave-based approach is anticipated to address the green challenges associated with massive IoT scenarios. Additionally, the exploration of metaprism (MTP) designs and double reflections assisted RIS deployment strategies are contributing to the optimization of wireless network performance and energy efficiency in mmWaves D2D communication. On the A-IoT front, efforts are being made to standardize network architecture enhancements and develop lightweight security solutions that ensure confidentiality, integrity, and privacy protection for ultra-low complexity and power consumption devices.

Noteworthy Papers

• Multi-layer RIS on Edge: Communication, Computation and Wireless Power Transfer: Introduces a multi-layer RIS-based universal paradigm for MIMO communication, computation, and WPT, highlighting its potential for energy-efficient wireless networks.
• Metaprism Design for Wireless Communications: Angle-Frequency Analysis, Physical Realizability Constraints, and Performance Optimization: Focuses on the design of an ideal MTP, offering a detailed exploration of its equivalence to an ideal S-parameter multiport model and introducing a realistic multiport network model.
• Double reflections Assisted RIS Deployment and Energy-efficient Group Selection in mmWaves D2D Communication: Proposes a set cover-based RIS deployment strategy and an energy-efficient group selection criteria, demonstrating the benefits of double reflections over single reflection.
• 3GPP Network Architecture Enhancement for Ambient IoT Service: Provides insights into 3GPP discussions on network architecture aspects for A-IoT service, focusing on architecture requirements, options, and security mechanisms.
• Lightweight Security for Ambient-Powered Programmable Reflections with Reconfigurable Intelligent Surfaces: Presents a lightweight security solution for AIoT, ensuring confidentiality, integrity, and privacy protection in wireless links, with a case study on an ambient-powered RIS.