Implementation of adaptive binary exponential backoff (ABEB) algorithm with dynamical sizing buffer for load-balanced RPL

In RPL the pair wise metric may result in a single node with good transmission quality, linked to many neighboring nodes which are associated with a large number of children nodes. In this case, for one DODAG the parent node can be severely congested which results in a large number of packets drop due to buffer limitation on the parent node side. We propose an Adaptive Binary Exponential Backoff algorithm to handle multiple channel access issue in such a way that it avoids not only the collision at the sender side but also buffer overflow at receiver side without degrading channel utilization and throughput efficiency.