Energy Efficient Clustering Schemes for Wireless Sensor Networks

Abstract

Advancements in low-power electronic devices integrated with wireless communication newlinecapabilities are one of recent areas of research in the field of Wireless Sensor Networks newline(WSNs). WSNs consist of spatially distributed autonomous sensors capable of sensing, newlinedata processing and transmitting the information. Sensors are distributed over a region newlineof interest either through some random or strategic methods to observe some newlinephenomenon and transmit the desired information. Considerable amount of work have newlineenabled the design, implementation and deployment of these sensor networks to meet newlinethe unique requirement of sensing and monitoring in real time applications. One of the newlinemajor challenges in WSNs is uniform and least energy dissipation while increasing the newlinelifetime of the network. The nodes with higher energy dissipation lead to early death newlineleaving a percentage of area unattended for the entire lifetime of the network. Several newlinealgorithms have been designed for efficient energy management of nodes in WSNs newlineusing clustering schemes. In clustering, the nodes can be grouped into clusters each newlinehaving a co-ordinator called cluster head (CH) responsible for collecting the data from newlineall the nodes present in each cluster. This leads to effective management and energy newlineefficient data transfer between the nodes and the sink. A sink is a node with unlimited newlineenergy and is responsible for collection of data from all the CHs present in the network. newlineThe selection of cluster heads can be an important task which involves a number of newlinecriteria to be considered such as received signal strength, residual energy, node degree, newlinedistance from the sink etc. The thesis outlines and proposes the energy efficient newlineclustering schemes in WSN. The work has been classified into eight chapters, which are newlinesummarized below. newline