On Time Synchronization of LoRaWAN Based IoT Devices for Enhanced Event Correlation

Abstract

[EN] Low power wide area network (LPWAN) technologies are becoming prominent in the era of the Internet of Things. In this context, LoRa long range technology emerges as a good solution thanks to its property of providing long-range along with low power although with limited bandwidth. In this paper, we focus on the use of a LoRa network for time synchronization among various nodes, to support message transmission and critical data sharing in a correct real-time manner. When providing a reliable collaborative service, clock synchronization is required, for example to apply AI solutions in IoT. In this paper, we evaluate different methodologies based on LoRa network time synchronization using commodity low cost hardware so that our solution could be adopted even in low operating expenditures or rural contexts.