A survey on enhanced RPL: Addressing the mobility in RPL

The Internet Of Things(IoT) is emerging as a necessary tool for the modernization of world. With the advancement in IoT comes the new challenges in many areas. One area among them is routing. Though routing in IoT is challenging but the more challenging task is routing in low power lossv networks (RPL). There are some critical applications for example healthcare, which requires the mobility issue to be resolved. Mobility in RPL is a new research area for many scholars and number of protocols are developed for the same. Some work integrate mobility in a way that avoid any disconnection of moving node before finding new connection while other just allow fast recovery after disconnection. This work is analysis of various mobility associated RPL protocols. The main focus of this paper is on the energy consumption, handover delay, signaling cost and route stability of various algorithms. The presented work also focuses on whether the protocol is reactive or proactive. This work gives a detailed conclusion on development of mobility in RPL and categorized the studied protocols on the basis of their property. To some extent protocols studied are also compared to each other and tells which one is better.