Application of Nonlinerar Oscillator Desynchronization Phenomena to Collision Avoidance in LoRa and its Experimental Evaluation
Dai Kojima, Hiroyuki Yasuda, Takuma Osada, Aohan Li, Maki Arai, Mikio Hasegawa · 2025
With the widespread use of IoT, the adoption of LPWA technology operating in the sub-GHz band, such as LoRa, is increasing. However, as the number of connected devices grows, packet collisions become a significant issue in traditional communication methods. To address this issue, an autonomous decentralized collision avoidance technique using nonlinear oscillators has been proposed. Previous studies have confirmed its effectiveness in high-density communication environments through simulations and experiments with Wi-SUN. In this study, we apply this collision avoidance approach based on nonlinear oscillators to a LoRa system. We implement the proposed method on LoRa device and evaluate its effectiveness using 50 real devices. The experimental results demonstrate that this approach significantly reduces packet collisions in the LoRa network, even in high-density environments.