University of Oulu

K. Mikhaylov and H. Karvonen, "Wake-up radio enabled BLE wearables: empirical and analytical evaluation of energy efficiency," 2020 14th International Symposium on Medical Information Communication Technology (ISMICT), Nara, Japan, 2020, pp. 1-5, doi: 10.1109/ISMICT48699.2020.9152699

Wake-up radio enabled BLE wearables : empirical and analytical evaluation of energy efficiency

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Author: Mikhaylov, Konstantin1; Karvonen, Heikki1
Organizations: 1Centre for Wireless Communications, University of Oulu, Oulu, Finland
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 1.8 MB)
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Language: English
Published: Institute of Electrical and Electronics Engineers, 2020
Publish Date: 2020-11-17


The energy efficiency is an important issue for a vast range of the Internet of Things (IoT) applications. However, especially critical is the energy efficiency in the context of wearable and body-area network devices. At the very same time, due to their nature, these use cases often impose stringent latency and reliability requirements. In this study, we provide an insight into the feasibility and the performance of the Bluetooth Low Energy (BLE) 5.0 compatible sensor devices enriched with a wake-up radio (WUR). Introduction of a low-consuming WUR radio equips a sensing device with a mechanism to know when its data are desired, and helps to avoid the unnecessary data transmissions thus saving energy. To investigate the utility of this approach and the associated with it trade-offs, we start by instrumenting and measuring a real-life prototype of a WUR-equipped BLE device. Based on the results of the real-life measurements, we first develop the analytical models, and then analyze how the latency requirements imposed by the application and the number of the wake-up signals affect the energy consumption of the WUR-equipped BLE device and a standalone BLE sensor. Our results show under which conditions each of these architectures outperforms another one and demonstrate that the WUR approach can be more energy efficient in the case if the desired latency for data delivery is below 2.11 s.

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Series: International Symposium on Medical Information and Communication Technology
ISSN: 2326-828X
ISSN-E: 2326-8301
ISSN-L: 2326-828X
ISBN: 978-1-7281-6617-9
ISBN Print: 978-1-7281-6618-6
Pages: 1 - 5
DOI: 10.1109/ISMICT48699.2020.9152699
Host publication: 2020 14th International Symposium on Medical Information Communication Technology (ISMICT), 20-22 May 2020, Nara, Japan
Conference: International Symposium on Medical Information and Communication Technology
Type of Publication: A4 Article in conference proceedings
Field of Science: 213 Electronic, automation and communications engineering, electronics
Funding: This research has been partially financially supported by the Academy of Finland 6Genesis Flagship (grant 318927) and by Business Finland through the SP400 project.
Academy of Finland Grant Number: 318927
Detailed Information: 318927 (Academy of Finland Funding decision)
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