Load Balancing in RPL Protocol

Abstract

The IETF Routing Over Low-power and Lossy Networks working group has newly deploy IPv6 Routing protocol for Low-Power and Lossy Networks, i.e, the RPL protocol. The RPL routing protocol is built for cope the typical need for wireless sensor networks. Like, efficient and reliable data collection in Low-power and Lossy networks. Specifically, it generates a Destination Oriented Directed Acyclic Graph (DODAG) for data dissemination. However, owing to the random deployment of sensor nodes in vast areas, and the different traffic patterns in the network, some sensor nodes may have much more burden in terms of packets forwarded than others. Such unbalanced burden distribution will result in these sensor nodes quickly exhausting their energy, and therefore network lifetime decrease. By using the combination of RED and M-RPL we can achieve the balance on a network, By using RED, detect the congestion on a network. And using M-RPL share the burden from one node to another node by allocating new path. As a result increased the network lifetime and packet delivery ratio.