BALANCED CLUSTERING APPROACH TO OPTIMIZE THE LIFETIME OF WIRELESS SENSOR NETWORKS

Abstract

Wireless Sensor Network is made up of a huge number of devices known as the sensor nodes. The nodes installed are confined with the battery and other resources. Energy conservation of the nodes is the prime issue in all the applications. As the overall lifetime of the network depends on the energy of these nodes, so maintaining the energy of the nodes becomes an important issue. This dissertation deals with the network which has nodes whose position is not fixed. The main concern in this work is to balance the load on the all the cluster heads. To balance the load on the CHs, every CH has been confined to the cluster radius; it can form a cluster of only the specified size. This size depends upon the distance of the CH from the base station and its number of neighbors. Those CHs that are close to the BS and have small degree will have a cluster size larger as compared to those that are away from the BS and have large degree. The selection of CHs is prioritized so as to selects those nodes as the CH which have better parameter values. The priority for each parameter depends upon the criticality in the network. The parameters considered while selecting the CHs are the node degree, mobility, energy and distance from BS. After comparing the proposed work with the current algorithm, it shows that the lifetime of the network has increased to a desirable amount.