Fast Bootstrap of Routing Protocol for Low Power and Lossy Networks on Dense Wireless Sensor Networks Through Adaptive Trickle Timer Settings
Paul Vincent Alpano, Jhoanna Rhodette Pedrasa · 2018
Wireless Sensor Networks are envisioned to be large-scale and with dense deployments for fine-grain monitoring. Improvements for Routing Protocol for Low Power and Lossy Networks (RPL) are necessary to meet the required outcome. We analyzed through simulations the performance of RPL on dense WSNs as a function of different trickle timer parameters. Our results show that varying the minimum interval, interval doublings and redundancy constant had no effect on the network's PDR and had slight effect on the network's churn rate on uniform topology. However, the startup time significantly changed depending on different minimum interval values. We propose an adaptive algorithm of RPL which varies a node's minimum interval depending on its number of neighbors. We implemented our enhancement on random topologies and showed that our enhancement produced better packet delivery ratio, lower startup time, and lower churn rate compared to networks with fixed minimum intervals.