1. Network Lifetime Enhancement
of Clustering Approach Using
Handoff Mechanism in WSN
Presented by:
Bhupender Singh(151602)
Parul Sharma(171607)
2. INTRODUCTION
A WSN is used to connect two or more self
organizing devices. Self – organizing devices is
known as sensor nodes
Wireless Sensor Network (WSN) has wide range
of applications like wildlife monitoring, target
tracking, environmental-monitoring, health-care
observing, natural disaster prevention, military
field surveillance and forest fire detection.
The information transmitted by the sensors is
collected by at base stations.
effectiveness of energy usage is one of the most
significant issues
3. CONTD…
Handoff in WSN as the process where a mobile node
change the destination address of its data packets from
one AP to another.
This paper provides a method for clustering and cluster
head election method using mobile based LEACH-ERE
to increase efficiency of energy.
It provides relation among method based on lifetime of
the network, packet delivery ratio get consider the fix
and mobile node in each responsible node.
Effectiveness of energy uses is important for extending
the lifetime.
An efficient and scalable way of organizing a network
cab be achieved using clustering formation method
4. NETWORK LAYER
Goal of layer: get packets from source host to destination host
Three important functions:
Path determination: route taken by packets from source to
destination with routing algorithms.
Switching: move packets from router’s input to appropriate
router output
Call setup: some network architectures require router call
setup along path before data flows
5. CONTD.
IEEE 802.15.4 is the standard which is used in
these approaches and techniques.
IEEE 802.15.4 has two layers: Physical and MAC
layer .
IEEE 802.15.4 uses two methods to transmit the
data beacon enabled mode and non-beacon
enabled mode.
In beacon enabled mode, super frame slotted is
used and non-beacon mode uses unslotted frames
for transmitting the data
6. HANDOVER PROCEDURE
WSN, has a large amount of applications such as
target tracking, health monitoring and security
etc. These applications have been proposed for
mobile wireless Sensor Network (MWSN).
Mobile sensor nodes can move freely in infrastructure
network. In MWSN mobility procedure, a mobile node
can move in any direction within or without in the range
Handoff can be classified in two types: hard
handoff and soft handoff.
7. There are two types of network architectures to
consider with one is the layered one and the other is
the clustered one.
information from each of the member nodes are
transferred to the sink node which is CH(cluster-
head) which subsequently send out to base station to
large distance
8. LEACH PROTOCOL
Low energy adaptive
hierarchical (LEACH)
Organizing and adaptive
itself
T(n) is threshold value.
p be that the percentage of
cluster heads altogether
nodes
r denote number of
round
G is nodes collection
which have not be head
node in 1/p level
9. CONTD.
Every node became head node in 1/p levels
Node which is head node during current level would not
be head node in next 1/p level
So number of nodes which are capable of becoming head
node reduce step by step
After 1/(p-1) level completed node which are not chosen
became cluster head with likelihood 1
13. Graph of packet delivery ratio versus simulation time for
MB LEACH ERE and Static LEACH
The graph represent that the packet delivery ratio
increases with respect to time and reaches saturation
over a certain time in contrast to static LEACH
CONTD.
15. SIMULATION ANALYSIS RESULT
AND COCLUSION
The graph clearly depicts the Energy consumption of
nodes in joules is less in MB-Leach-Ere.
Hence, lifetime of network is increased with respect to
simulation time.
A novel and suitable approach has been approached to
eliminate hands off and increase the throughput and
packet delivery ratio using leach clustering
