REACH2-Mote: a range-extending passive wake-up wireless sensor node

• Main Authors: Chen, Li, Warner, Jeremy, Yung Pak, Lam, Zhou, Dawei, Heinzelman, Wendi, Seyfettin Demirkol, Ilker, Muncuk, Ufuk, Chowdhury, Kaushik Roy, Basagni, Stefano
• Format: Text Resource
• Language: English
• Subjects: Enginyeria de la telecomunicació; Passive wake-up radio; Range extension; Telemàtica i xarxes d'ordinadors; Wireless LANs; Wireless sensor networks; Xarxes locals sense fil Wi-Fi; Àrees temàtiques de la UPC
• ISSN: 1550-4859
• DOI: 10.1145/2829954

A wireless sensor network that employs passive radio wake-up of the sensor nodes can reduce the energy cost for unnecessary idle listening and communication overhead, extending the network lifetime. A passive wake-up radio is powered by the electromagnetic waves transmitted by a wake-up transmitter rather than a battery on the sensor node. However, this method of powering the wake-up radio results in a short wake-up range, which limits the performance of a passive wake-up radio sensor network. In this article, we describe our design of a passive wake-up radio sensor node-REACH2-Mote-using a high-efficiency, energy-harvesting module and a very low power wake-up circuit to achieve an extended wake-up range. We implemented REACH2-Mote in hardware and performed field tests to characterize its performance. The experimental results show that REACH2-Mote can achieve a wake-up range of 44 feet. We also modeled REACH2-Mote and evaluated its performance through simulations, comparing its performance to that of another passive wake-up radio approach, an active wake-up radio approach, and a conventional duty cycling approach. The simulation results show that REACH2-Mote can significantly extend the network lifetime while achieving high packet delivery rate and low latency. Peer Reviewed