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HARE: Supporting Efficient Uplink Multi-Hop Communications in Self-Organizing LPWANs

Department of Information and Communication Technologies, Universitat Pompeu Fabra, Carrer de Roc Boronat 138, 08018 Barcelona, Spain
Author to whom correspondence should be addressed.
Sensors 2018, 18(1), 115;
Received: 15 November 2017 / Revised: 27 December 2017 / Accepted: 30 December 2017 / Published: 3 January 2018
(This article belongs to the Section Sensor Networks)
The emergence of low-power wide area networks (LPWANs) as a new agent in the Internet of Things (IoT) will result in the incorporation into the digital world of low-automated processes from a wide variety of sectors. The single-hop conception of typical LPWAN deployments, though simple and robust, overlooks the self-organization capabilities of network devices, suffers from lack of scalability in crowded scenarios, and pays little attention to energy consumption. Aimed to take the most out of devices’ capabilities, the HARE protocol stack is proposed in this paper as a new LPWAN technology flexible enough to adopt uplink multi-hop communications when proving energetically more efficient. In this way, results from a real testbed show energy savings of up to 15% when using a multi-hop approach while keeping the same network reliability. System’s self-organizing capability and resilience have been also validated after performing numerous iterations of the association mechanism and deliberately switching off network devices. View Full-Text
Keywords: LPWAN; IoT; M2M; multi-hop; power saving mechanisms LPWAN; IoT; M2M; multi-hop; power saving mechanisms
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Adame Vázquez, T.; Barrachina-Muñoz, S.; Bellalta, B.; Bel, A. HARE: Supporting Efficient Uplink Multi-Hop Communications in Self-Organizing LPWANs. Sensors 2018, 18, 115.

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