Hybrid-RPL: A Step Toward Ensuring Scalable Routing in Internet of Things

The complete realization of Internet of Things (IoT) paradigm comes with its own share of challenges. Scalability, which is one among these challenges, can be addressed through efficient routing protocols developed for low power and lossy networks (LLNs). The paper proposes an LLN routing protocol, hybrid-RPL (H-RPL), which allows the nodes to efficiently and adaptively switch\storing and non-storing modes of operation. H-RPL takes into account the network resources like node memory and node battery while performing the switch operations. Also, the proposed routing protocol performs the dual role of reducing traffic surrounding the root node, as well as preventing the routing table overflow. H-RPL has been simulated and tested, and the results show considerable improvements compared to the storing and non-storing modes of traditional RPL.