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arXiv · 2312.04294

Energy-Efficient Internet of Things Monitoring with Content-Based Wake-Up Radio

Anay Ajit Deshpande·Federico Chiariotti·Andrea Zanella
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Abstract

The use of Wake-Up Radio (WUR) in Internet of Things (IoT) networks can significantly improve their energy efficiency: battery-powered sensors can remain in a low-power (sleep) mode while listening for wake-up messages using their WUR and reactivate only when polled. However, polling-based WUR may still lead to wasted energy if values sensed by the polled sensors provide no new information to the receiver, or in general have a low Value of Information (VoI). In this paper, we design a content-based WUR that tracks the process observed by the sensors and only wakes up the sensor if its estimated update's VoI is higher than a threshold communicated through the poll. If the sensor does not reply to the polling request, the Gateway (GW) can make a Bayesian update, knowing that either the sensor value substantially confirms its current estimate or the transmission failed due to the wireless channel. We analyze the trade-off between the tracking error and the battery lifetime of the sensors, showing that content-based WUR can provide fine-grained control of this trade-off and significantly increase the battery lifetime of the node with a minimal Mean Squared Error (MSE) increase.

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Anay Ajit Deshpande, Federico Chiariotti, Andrea Zanella. 2023-12-07. Energy-Efficient Internet of Things Monitoring with Content-Based Wake-Up Radio. https://arxiv.org/abs/2312.04294

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