Analysing the performance of 6LoWPAN- CoAP and RPL-CoAP on LoRaWAN in Constrained Environment

The growing Internet of Things (IoT) has led to an increasing number of interconnected devices across diverse locations. To enable efficient data transmission in resource-constrained IoT networks, selecting the right communication protocols is crucial. This study compares the performance of 6LoWPAN-CoAP and RPL-CoAP in LoRaWAN networks under limited settings, focusing on Packet Delivery Ratio (PDR) and latency. Tests with simulated LoRaWAN settings were conducted at various scales to evaluate both protocols' scalability and dependability. The findings demonstrate that RPL-CoAP out-performs 6LoWPAN-CoAP in constrained LoRaWAN scenarios, consistently showing higher PDR and reduced latency. The RPL routing algorithm's inherent characteristics contribute to this improved performance, effectively constructing routes while considering energy usage and link quality. Additionally, the study highlights LoRaWAN networks' inherent PDR benefits over conventional networks, making the RPL-CoAP and LoRaWAN combination a powerful option for IoT applications in limited set-tings. These insights can guide the design of reliable and effective IoT applications in resource-limited environments, maximizing the IoT ecosystem's potential.