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Open AccessArticle

Cooperative Downlink Listening for Low-Power Long-Range Wide-Area Network

Creative Informatics & Computing Institue, Korea University, Seoul 02841, Korea
Department of Embedded Systems Engineering, Incheon National University, Incheon 22012, Korea
Author to whom correspondence should be addressed.
Academic Editor: James J. Park
Sustainability 2017, 9(4), 627;
Received: 31 March 2017 / Revised: 7 April 2017 / Accepted: 12 April 2017 / Published: 17 April 2017
(This article belongs to the Collection Advanced IT based Future Sustainable Computing)
Recently, the development of the Internet of Things (IoT) applications has become more active with the emergence of low-power wide-area network (LPWAN), which has the advantages of low-power and long communication distance. Among the various LPWAN technologies, long-range wide-area network (LoRaWAN, or LoRa) is considered as the most mature technology. However, since LoRa performs uplink-oriented communication to increase energy efficiency, there is a restriction on the downlink function from the network server to the end devices. In this paper, we propose cooperative downlink listening to solve the fundamental problem of LoRa. In particular, the proposed scheme can be extended to various communication models such as groupcasting and geocasting by combining with the data-centric model. Experiments also show that the proposed technology not only significantly reduces network traffic compared to the LoRa standard, but also guarantees maximum energy efficiency of the LoRa. View Full-Text
Keywords: LPWAN; LoRaWAN; downlink; data-centric; energy efficiency LPWAN; LoRaWAN; downlink; data-centric; energy efficiency
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Kim, B.; Hwang, K.-I. Cooperative Downlink Listening for Low-Power Long-Range Wide-Area Network. Sustainability 2017, 9, 627.

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