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Research Article: Althalji et al 73

Research Article

SJSI Mobility-aware Routing for Low Power and Lossy Networks

Abstract

Authors: With the development that took place in the field of devices and
Alaa Althalji communications and the need to make life easier by using technology,
Souheil Khawatmi the idea of connecting everything to the Internet was developed, which
Bader Aldin Kassab 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
Affiliation: processing we need a new specific technology called IEEE 802.15.4 with
The.Department.of low power consumption and bandwidth limitations, which relied on the
Systems.&.Computer RPL routing protocol, but it did not support mobile nodes, so it is a
Networks of Faculty of challenge to achieve it without causing overhead in low power and lossy
Informatics_Aleppo network. A new control message was proposed to make RPL routing
University, Syria. protocol able to support mobility by adapting to the change in the

Submitted 28 Feb 2023 network topology quickly. A new control message proposed called
Accepted 03 Apr 2023 'HERE', which is sent by the mobile node when it moves. 'STOP' message
Correspondence:
bader.kassab@gmail.com is sent when it stops to tell the neighbor nodes, so they will be aware of
the status of the mobile node, which help 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 .
Keywords: IoT, Mobile node, Routing, IEEE 802.15.4, RPL, LLN, 6LoWPAN.

T results showed more overhead because of
Introduction
he Internet of Things (IoT) makes all
sending more control messages in the
smart devices connect to the Internet
networks. other researches results were not
anywhere at any time to form the
(Received signal strength indication) to detect
Internet of Things [1] . Smart devices are accurate because of depending on RSSI value
described to be low power and limited the mobility of nodes, which is affected by
capability of processor and memory. These obstacles and interference. Our contribution is
devices can be linked together to form a to improve RPL protocol by making it able to
network without an infrastructure in which ensure the nodes aware of the mobile node
nodes act as a router. Smart devices use IEEE movement, so the node can reconnect to the
[3]
[2]
802.15.4 and routing protocol RPL , but RPL network as soon as possible and reduce the
did not support mobile nodes, so many disconnection time without increasing the
researchers worked to improve it, but their transmission rate of control messages. The

SJSI – 2023: VOLUME 1-1