Page 83 - sjsi
P. 83
Research Article: Althalji et al 83
makes a node reconnect as soon as possible.
This disconnection results from movement of
the nodes. Our goal is to ensure that the
protocol is lightweight while working to support
mobility, because many related studies led to
increased the overhead, and others depended
on discovering movement of nodes through the
value of the signal strength RSSI, which is
affected by interference and barriers. The new
control message 'HERE' is proposed to be sent
Fig. 16: Power consumption vs num of all nodes by the node when it moves to both the parent
(mobile and fixed) node and its children. If the parent node
Discussion receives this message, it will respond by LISTEN
message, but if it does not receive LISTEN
The research shows the need to support mobile message, it will search for a parent node. If a
nodes in IoT networks. The proposed work node stops moving, it sends a STOP message to
helped to achieve this and reduce the impact notify its child nodes. These operations were set
caused by the nodes when they move within with a timer under the standard times for this
the network . From the simulation results, we type of network. The results showed the
observed that the proposed protocol improved superiority of the proposed protocol over
the performance of the RPL protocol. It previous studies because it helped to reconnect
increased the packet delivery ratio because it the nodes in the network quickly, which
made the parent and child nodes of the mobile increases the packet delivery rate and reduces
node aware of its state. So they search for a new the delay caused by disconnections in the
parent node immediately when the node moves network when nodes move. Also, it did not
away without waiting to expire the timer of the depend on increasing the rate of sending
trickle algorithm, so it decreased the delay . The control messages which causes an increase in
proposed protocol characterized that it doesn't the network overhead . As this paper focuses on
send control messages periodically because this supporting the mobility in LLN networks, our
is not suitable for the nature of LLN networks. It future work is to propose a method to
minimized overhead because it maintained determine the type of device (fixed / mobile)
routing adjacency, focused on links that are and suggest a mechanism for detecting the
used by the mobile node, and did not depend movement of nodes in real-time within the
on broadcasting the proposed control message network and changing its parent node to more
to all neighboring nodes to be more suitable for appropriate node, so that it reduces the
this type of network because this decreased the number of changes the parent node . In
power consumption . Therefore, the proposed addition, we will work on enhancing network
protocol helps to spread the devices that stability depending on additional parameters to
support mobility (smart watches, smart vacuum choose the parent node in the network. This
cleaners) in IoT networks without impact on the research contributes to increase IoT spreading
network . in many applications in several areas, such as
parking system, smart home, health care, etc.
Conclusions :
Which contain mobile nodes without affecting
network performance .
In this research, a new mechanism is proposed
to discover disconnection in the network and
SJSI – 2023: VOLUME 1-1
