With the rapid expansion of the Internet of Things (IoT), sub-GHz Low Power Wide Area (LPWA) technologies such as LoRa have gained widespread adoption. However, as the number of connected devices increases, conventional communication methods encounter significant packet collisions. To overcome this issue, an autonomous decentralized collision avoidance method based on nonlinear oscillators has been proposed. Previous studies using simulations and Wi-SUN experiments have confirmed the effectiveness of this approach in high-density communication environments, and its feasibility has also been demonstrated through an initial implementation on ten actual devices. In this study, we conducted simulations with a larger number of devices to evaluate the scalability of the proposed collision avoidance method, which confirms its effectiveness in high-density scenarios. Furthermore, we implemented the method on 50 physical devices to assess its real-world performance. The experimental results show that the proposed method significantly reduces packet collisions in LoRa networks, even under high-density conditions.
Track ID:
5.4
Track Name:
Fundamentals and Applications of Complex Communication Sciences
