Data aggregation using dynamic tree with minimum deformations

Abstract

In Wireless Sensor Network, energy efficient routing is a challenging matter. In addition to this the loss of data packets during transmission should be handled carefully. Data aggregation is a technique which can be used to eliminate the unnecessary data or information and transmit only required data to the sink node. To maximize the lifetime of the sensor network, protocols like LEACH, PEGASIS had been proposed, where aggregation of data are done at the cluster head of each cluster and at the sink node. This scheme gives better performance than the conventional protocol of Direct Transmission. In this paper a new scheme has been proposed where the sink node is mobile in nature and the data are forwarded to the sink node through a tree which is constructed on the cluster head of each cluster. To maintain the dynamic structure of the tree during motion of the sink node, a minimum deformation is carried out on the tree so that total energy consumption is less which enhance the life time of the sensor network.