Spatial Correlation Based Clustering with dynamic CH Selection Scheme towards Enhanced QoS Metrics in Wireless Sensor Networks

Abstract

Resource constrained wireless sensor nodes are generally randomly distributed in a given area of interest to sense required information and the sensed data is transmitted to the sink station or Base Station (BS) through various clustering and data routing algorithms. The standard clustering algorithms that are aimed at efficient data routing techniques are Low Energy Adaptive Clustering Hierarchy (LEACH) algorithm , Distributed Energy Efficient Clustering (DEEC) algorithm, Stable Election Protocol (SEP) and various others. Most of these algorithms are the various variants of LEACH. Our proposed scheme of data gathering and routing is based on a two hop structure wherein the Cluster Leader (CL) forwards the aggregated received data from the Cluster members to the Sink directly. The Chance-value that determines the Cluster Leader in a round is decided by a combination of parameters specific to the Sensor nodes in the cluster. In our simulation approach we have also tried to analyze the effect of changing density of sensor nodes in the select area. Thus in our proposed scheme, we embark on a fixed Clustering scheme where the CL is selected dynamically so as to extend the network’s lifetime and achieve enhanced throughput in comparison to the standard algorithms like DEEC, SEP and LEACH.