rupa presentation seminar vleach

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Improvement on Leach protocolof wireless sensor

network(VLEACH)

Presented by

B.RupaCSE

083T1A0508



Abstract

New version of leach protocol(VLEACH).

Aim of VLEACH.

Performance evolution of LEACH and

VLEACH using OM NET++Simulator.



Introduction

WS N-monitor physical or environmental

conditions.

Energy plays important role in WS N. Aim of routing protocols in WS N

Examples of routing protocols -

LEACH,PEGASIS etc. LEACH-cluster based routing protocol in

WS N.



Broadcasting



Cluster based routing

Fig :Clustering



LEACH protocol Hierarchical routing protocol.

Protocol is divided into rounds, each round

consists of two phases

Setup phase

1.Advertisement phase

2.Cluster setup phase

Steady state phase

1.Schedule creation.

2.Data transmission.



LEACH(continued«.)

Disadvantages of LEACH

Random CH selection(don¶t consider the

energy consumption metric) It can¶t cover large area.

CHs are not uniformly distributed.



Improvement on leach protocol

1.E-LEACH protocol RE of node as metric for CH selection.

2.TL-LEACH protocol Another CH is used as relay station between for

CH and BS.

3.M-LEACH protocol

Select optimal path between CH and BSthrough other CH¶s.

4.LEACH ±C protocol



V-LEACH

In V-LEACH ,the

cluster contains

Cluster head

Vice-cluster head

Cluster nodes

VICE-CH



V-LEACH(Continued«..)

Advantages over LEACH Protocol

Even CH dies the cluster will work with

vice-CH.

The over all network life time also is more.



Simulation and results

Parameter Value

Simulation time 900 seconds

topology size 900 ×900 square meter

Number of nodes 25,50,100 and 115 nodes

CH probability 0.02,0.05,0.1

Number of trials 20 trial

Initial node power 1Joule

Nodes distribution Nodes are randomly

distributed

BS position Located at 1000×450



Conclusion

By simulation result we can say that

V-LEACH generates less number of messages

than LEACH. The network remaining energy is more

compared to LEACH.



REFERE NCES

1. Improvement on LEACH protocol of WS N.

2. Energy efficient communication protocol in

WS N

.3. A two-level hierarchy for LEACH.

4. An application-specific protocol architecture

for W

S N

.

rupa presentation seminar vleach

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