Mobility-aware Routing for Low Power and Lossy Networks

With the development that took place in the field of devices and communications and the need to make life easier by using technology, the idea of connecting everything to the Internet was developed, which is the basic concept and goal of the Internet of Things so we can communicate and interact with people and other things like smart devices. Because smart devices are limited in power, memory, and processing we need a new specific technology called IEEE 802.15.4 with low power consumption and bandwidth limitations, which relied on the RPL routing protocol, but it did not support mobile nodes, so it is a challenge to achieve it without causing overhead in low power and lossy network. A new control message was proposed to make RPL routing protocol able to support mobility by adapting to the change in the network topology quickly. A new control message proposed called 'HERE', which is sent by the mobile node when it moves. 'STOP' message is sent when it stops to tell the neighbor nodes, so they will be aware of the status of the mobile node, which helps them to quickly reconnect to the network. The performance evaluation showed better results than previous studies because it increased the speed of reconnecting the node to the network after it moved, which helps to increase the packet delivery rate and reduce the latency.