MSESEP- Mobile Sink Based ESEP using Reliable Cluster Head and Sorting Technique

Abstract

The Wireless Sensor Network (WSN) is composed of sensors. These sensor nodes sense the physical parameters like temperature, pressure, humidity etc. In real time environment these sensors have different energies. In this paper we have assumed three types of sensor nodes. Now a day's most researchers are focusing on how to increase the network lifetime through efficient use of the energy. Generally the network is divided into a certain number of clusters and then a cluster head is selected from all these sensors randomly. There is a Base Station (BS) or Sink which receives aggregated data from the cluster heads and sends it to the end computer. In the existing protocols the sink is kept fixed which results the problem of data collection from the sensor node's situated at WSN boundary. In our proposed Extended Stable Election Protocol (ESEP) the sink is kept mobile. To increase the lifetime of the network the concept of reliable cluster head is used. The reliable cluster head will act as secondary cluster head in case the main cluster head would die. We have used a new approach to make the cluster head selection more deterministic i.e. sorting technique which sorts the nodes in the descending manner. The performance evaluation of the proposed ESEP is done on the basis of the First Node Dead (FND), packets sent to base station, packets sent to cluster head and total Network Lifetime. The network simulator MATLAB is used for the simulation. The simulation results show that our proposed ESEP gives better result than the existing ESEP.