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Title	Radio-In-The-Loop Simulation And Emulation Modeling For Energy-Efficient And Cognitive Internet Of Things In Smart Cities: A Cross-Layer Optimization Case Study
ID_Doc	44078
Authors	Böhm S.; König H.
Year	2024
Published	Computer Communications, 218
DOI	http://dx.doi.org/10.1016/j.comcom.2024.02.006
Abstract	Wireless communication technologies and Internet of Things (IoT) applications are the main drivers of upcoming sustainable smart networks which require an effective resource management. The reduction of the transmission energy consumption and the efficient utilization of the available spectrum for wireless communication, for instance, have to be enabled by energy-efficient and cognitive IoT networks. These are implemented through optimized communication protocol stacks and algorithms that rely on actual physical layer and channel state information. The modeling and the prototype evaluation of protocol optimization approaches are mainly driven by pure simulation studies with abstracted physical layer and channel models. With the Radio-in-the-Loop (RIL) simulation (S. Böhm and H. König, 2023) and modeling (S. Böhm and H. König, 2021), we have created an evaluation approach that integrates real wireless hardware and radio environments into the simulation of protocol sequences and algorithms. In this paper, we summarize the fundamentals of our basic methodology and demonstrate a cross-layer optimization case study for energy efficient modeling using software-defined radios. We exemplary show the scenario of a receiver-sensitivity control to increase the energy efficiency of receiver-dominated IoT nodes in Smart City networks. © 2024 The Author(s)
Author Keywords	Cognitive iot; Cognitive radio; Cross-layer optimization; Emulation; Hardware-in-the-loop; Radio-in-the-loop; Simulation; Wireless sensor networks

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