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LoRaWAN Gateway Placement Model for Dynamic Internet of Things Scenarios

JMAC Protocol: A Cross-Layer Multi-Hop Protocol for LoRa

AttlanTTIC Research Center, University of Vigo, 36310 Vigo, Spain
Authors to whom correspondence should be addressed.
Sensors 2020, 20(23), 6893;
Received: 9 November 2020 / Revised: 29 November 2020 / Accepted: 1 December 2020 / Published: 2 December 2020
(This article belongs to the Special Issue LoRa Sensor Network)
The emergence of Low-Power Wide-Area Network (LPWAN) technologies allowed the development of revolutionary Internet Of Things (IoT) applications covering large areas with thousands of devices. However, connectivity may be a challenge for non-line-of-sight indoor operation or for areas without good coverage. Technologies such as LoRa and Sigfox allow connectivity for up to 50,000 devices per cell, several devices that may be exceeded in many scenarios. To deal with these problems, this paper introduces a new multi-hop protocol, called JMAC, designed for improving long range wireless communication networks that may support monitoring in scenarios such smart cities or Industry 4.0. JMAC uses the LoRa radio technology to keep low consumption and extend coverage area, and exploits the potential mesh behaviour of wireless networks to improve coverage and increase the number of supported devices per cell. JMAC is based on predictive wake-up to reach long lifetime on sensor devices. Our proposal was validated using the OMNeT++ simulator to analyze how it performs under different conditions with promising results. View Full-Text
Keywords: smart city; IoT; LoRa; multi-hop; mesh network; OMNeT++ smart city; IoT; LoRa; multi-hop; mesh network; OMNeT++
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MDPI and ACS Style

López Escobar, J.J.; Gil-Castiñeira, F.; Díaz Redondo, R.P. JMAC Protocol: A Cross-Layer Multi-Hop Protocol for LoRa. Sensors 2020, 20, 6893.

AMA Style

López Escobar JJ, Gil-Castiñeira F, Díaz Redondo RP. JMAC Protocol: A Cross-Layer Multi-Hop Protocol for LoRa. Sensors. 2020; 20(23):6893.

Chicago/Turabian Style

López Escobar, Juan J., Felipe Gil-Castiñeira, and Rebeca P. Díaz Redondo. 2020. "JMAC Protocol: A Cross-Layer Multi-Hop Protocol for LoRa" Sensors 20, no. 23: 6893.

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