An efficient hand-off optimization based RPL routing protocol for optimal route selection in mobility enabled LLNs

The high pace emergence of Wireless Sensor Networks and associated communication applications have given rise to numerous advanced researches that intend to optimize overall performance and efficiency of these Low Power Lossy Networks (LLNs). The IETF proposed Routing Protocol for Low power and Lossy network (RPL) is one of the most efficient protocols; still the standard RPL doesn't support mobility function. In this paper, a mobility enabled RPL protocol has been developed using enhanced hand-off and topology aware best parent selection scheme. Our proposed scheme deals with the best route selection process to be used for mobility assisted RPL for LLNs. The novelties of the proposed scheme can be characterized in terms of its enhanced hand-off process, optimized control messages, topology aware parent selection and quality sensitive DODAG formation, best route formation, congestion avoidance, and loop avoidance. The proposed mobility based RPL has exhibited better packet delivery ratio, delay, and number of DAOs required to achieve best route selection.