Multimetrics-Based Objective Function for Low-power and Lossy Networks Under Mobility

Due to the popularity of Low-power and Lossy Networks (LLN), numerous low-power device applications are emerging and driving the need for an efficient routing protocol. Recently, the Internet Engineering Task Force (IETF) standardized the IPv6 Routing Protocol for Low-power and Lossy Networks (RPL). To route the packets, the RPL constructed a Directed Acyclic Graph (DAG) rooted towards the DAG root using the Objective Function (OF). However, the OF supported by the standard RPL did not yield better performance, since it used a single metric. Therefore, an OF based on Multimetrics (MMOF), which combines multiple routing metrics for Static Router Nodes (SRNs) and Mobile Nodes (MNs), has been proposed in this work. From the simulation results, it was observed that the proposed MMOF showed better performance compared with other existing OFs of the RPL.