Indian Journal of Science and Technology

Abstract

In this paper, we propose an Energy Efficient Cluster-Chain based Protocol for Time Critical applications (ECCPTC) in wireless sensor networks to maximize network lifetime and minimize energy consumption and transmission delay of time critical data. ECCPTC considers higher priority for time critical data than non-time critical data so that time critical data are immediately transmitted to the base station. ECCPTC uses a threshold value for reducing transmission delay of time critical data. ECCPTC organizes sensor nodes into clusters by using multiple metrics and constructs a chain among the sensor nodes within cluster so that each sensor node receives non-time critical data from a previous neighbor and transmits to a next neighbor. ECCPTC also adopts a chain based data transmission mechanism for sending non-time critical data packets from the cluster heads to the base station. Simulation results show that our proposed protocol significantly outperforms LEACH, CBRP and PEGASIS in terms of network lifetime, stability period, instability period, energy consumption, transmission delay of time critical data and the total number of data received at base station.
Keywords: Wireless sensor network, Clustering protocol, Chain based routing, Energy efficient, Time critical data