Band energy; Energy efficient; Impedance; In-band; Power; Power demands; Property; Reconfigurable; Tuning; Wireless communications; Automotive Engineering; Computer architecture; Protocols; Power demand; Channel estimation; Wireless communication
Abstract :
[en] Reconfigurable intelligent surfaces (RISs) are considered a key enabler of highly energy-efficient 6G and beyond networks. This property arises from the absence of power amplifiers in the structure, in contrast to active nodes, such as small cells and relays. However, a certain amount of power is still required for RIS operation. To improve their energy efficiency further, we propose the notion of perpetual RISs, which secure the power needed to supply their functionalities through wireless energy harvesting (EH) of impinging transmitted electromagnetic (EM) signals. Toward this, we initially explain the rationale behind such RIS capability and proceed with a presentation of the main RIS controller architecture that can realize this vision under an in-band EH consideration. Furthermore, we present a typical EH architecture, followed by two harvesting protocols. Subsequently, we study the performance of the two protocols under a typical communications scenario. Finally, we elaborate on the main research challenges governing the realization of large-scale networks with perpetual RISs.
Disciplines :
Electrical & electronics engineering
Author, co-author :
NTONTIN, Konstantinos ; University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > SigCom
Boulogeorgos, Alexandros-Apostolos A. ; University of Western Macedonia, Department Electrical and Computer Engineering, Kozani, Greece
Abadal, Sergi ; Universitat Politècnica de Catalunya, Department of Computer Architecture, Barcelona, Spain
Mesodiakaki, Agapi ; Aristotle University of Thessaloniki, Thessaloniki, Thessaloniki, Greece
CHATZINOTAS, Symeon ; University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > SigCom
Ottersten, Bjorn ; Interdisciplinary Center for Security, Reliability, and Trust, University of Luxembourg, Luxembourg City, Luxembourg
External co-authors :
yes
Language :
English
Title :
Perpetual Reconfigurable Intelligent Surfaces Through In-Band Energy Harvesting: Architectures, Protocols, and Challenges
Publication date :
March 2024
Journal title :
IEEE Vehicular Technology Magazine
ISSN :
1556-6072
eISSN :
1556-6080
Publisher :
Institute of Electrical and Electronics Engineers Inc.
This work was supported by the Luxembourg National Research Fund (FNR)-RISOTTI Project under Grant 14773976. In addition, the authors would like to cordially thank the editor of the manuscript and the anonymous reviewers, whose comments and suggestions notably contributed to the improvement of this work.
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