Comparative Analysis of Trickle Timer Aware RPL Routing Protocols for Low Power & Lossy IoT Networks

Development of miniature devices equipped with power constraints sensor nodes (SNs), gave the birth of Internet of Things (IoT). It is a ubiquitous computing, which connects the daily life objects to the internet without any human intervention. Low Power & Lossy Networks (LLNs) is the most significant component & subclass of IoT network, which utilizes IPv6 based routing protocol over low power & lossy networks (RPL) for data communication over the network. RPL employs the trickle timer algorithm to control, regulate and maintain the routing traffic in RPL network. It divides the time into number of intervals and particularly used for the purpose of reliable broadcast, resource discovery and traffic control in the network. However, it has some shortcoming viz. power consumption, throughput, delay, packet delivery ratio etc. In this paper, we have compared RPL-Trickle, FL-Trickle and I-Trickle to analyze its performance w.r.t throughput, power consumption and network overhead. Results shown that I-Trickle consume little bit less energy as per the increasing the network density. Whereas FL-Trickle able to send more number of data packets from one to another SNs successfully.