4.8 Article

RT-LoRa: A Medium Access Strategy to Support Real-Time Flows Over LoRa-Based Networks for Industrial IoT Applications

Journal

IEEE INTERNET OF THINGS JOURNAL
Volume 6, Issue 6, Pages 10812-10823

Publisher

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JIOT.2019.2942776

Keywords

Industrial Internet of Things (IoT); long range (LoRa); low power wide area networks (LPWANs); medium access control (MAC) protocols

Funding

  1. University of Catania, through the program FONDI PER LA RICERCA DI ATENEO -PIANO PER LA RICERCA

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Low power wide area networks (LPWANs) are suitable for many applications that require low energy consumption, support for a high number of nodes, and large coverage range. Long range (LoRa) is one of the most successful LPWAN technologies, as it enables robust long-distance low power communications and it is proven to be effective in Internet of Things (IoT) applications, such as environmental monitoring and smart metering. LoRa is also promising for Industrial IoT scenarios, but its adoption is impaired by the relevant standardized medium access control protocol, LoRaWAN, that does not offer support to real-time data flows. For this reason, this article proposes RT-LoRa, a medium access strategy for LoRa that provides support for real-time flows, thus enabling the implementation of LoRa-based LPWAN for Industrial IoT applications. This article describes RT-LoRa, presents a simulative assessment in a realistic Industrial IoT scenario and provides some guidelines for the configuration of an RT-LoRa network.

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