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Title:	Passive wake-up radios: from devices to applications
Author:	Ba, He; Seyfettin Demirkol, Ilker; Heinzelman, Wendi
Other authors:	Universitat Politècnica de Catalunya. Departament d'Enginyeria Telemàtica
Abstract:	Energy efficiency is one of the most important criteria in the design of a wireless sensor network. Sensor nodes are usually battery-powered and thus have very limited lifetime. In this paper, we introduce a novel passive wake-up radio device named WISP-Mote that uses a passive RFID tag as a wake-up receiver for a traditional sensor node. We characterize the WISP-Mote with field tests in different operating environments and present the wake-up probabilities based on the distance between the wake-up transmitter and receiver. We then perform simulations to compare the performance of a network with WISP-Motes and with duty-cycling of the sensor nodes, using the wake-up probabilities measured in our field tests. Additionally, potential applications that can benefit from WISP-Motes are discussed, and the advantages of using WISP-Motes are identified by simulation results based on these application scenarios. Results show that the wake-up radio sensor networks have great potential over duty-cycling approaches for energy efficiency, while providing similar latency and packet delivery performances. © 2013 Elsevier B.V. All rights reserved.
Abstract:	Peer Reviewed
Subject(s):	-Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Telemàtica i xarxes d'ordinadors -Àrees temàtiques de la UPC::Energies::Eficiència energètica -Computer networks -Energy conservation -Energy efficiency -Mobile sinks -Radio wake-up -RFID -Wireless sensor networks -Wireless LANs -Energia -- Estalvi
Rights:	Attribution-NonCommercial-NoDerivs 3.0 Spain http://creativecommons.org/licenses/by-nc-nd/3.0/es/
Document type:	Article - Published version Article
Published by:	Elsevier
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