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Smart city article details

Title	Riss And Sidelink Communications In Smart Cities: The Key To Seamless Localization And Sensing
ID_Doc	46699
Authors	Chen H.; Kim H.; Ammous M.; Seco-Granados G.; Alexandropoulos G.C.; Valaee S.; Wymeersch H.
Year	2023
Published	IEEE Communications Magazine, 61, 8
DOI	http://dx.doi.org/10.1109/MCOM.001.2200970
Abstract	A smart city involves, among other elements, intelligent transportation, crowd monitoring, and digital twins, each of which requires information exchange via wireless communication links and localization of connected devices and passive objects (including people). Although localization and sensing (L&S) are envisioned as core functions of future communication systems, they have inherently different demands in terms of infrastructure compared to communications. Wireless communications generally requires a connection to only a single access point (AP), while L&S demand simultaneous line-of-sight propagation paths to several APs, which serve as location and orientation anchors. Hence, a smart city deployment optimized for communication will be insufficient to meet stringent L&S requirements. In this article, we argue that the emerging technologies of reconfigurable intelligent surfaces (RISs) and sidelink communications constitute the key to providing ubiquitous coverage for L&S in smart cities with low-cost and energy-efficient technical solutions. To this end, we propose and evaluate AP-coordinated and self-coordinated RIS-enabled L&S architectures and detail three groups of application scenarios, relying on low-complexity beacons, cooperative localization, and full-duplex transceivers. A list of practical issues and consequent open research challenges of the proposed L&S systems is also provided. © 1979-2012 IEEE.
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