Catching energy efficient stable nodes in Ad-Hoc Networks

摘要

Mobile ad-hoc networks (MANETS) lack a fixed infrastructure and data transmission on constantly changing routes needs to be maintained efficiently with respect to successful delivery and delay. A major challenge to this is that the nodes constituting the links are not energy efficient or they die out. The major aim of this study is to quantify this energy efficiency of nodes. The major contributions of the paper is to (1) associate the energy efficiency of a node to its energy (2) suggests for the first time values for the threshold energy of nodes which would make them energy efficient under different conditions of varying (1) simulation time and (ii) number of nodes. Additionally the performance metrics like PDF, throughput, delay and average energy consumed for these values of threshold energy were measured using simulations on Network Simulator NS-2. The important results of the study indicated that (1) a link could be stable if the nodes used for creating it have sufficient threshold energy. (2) The value of threshold energy chosen depends on the desired performance metric viz. PDF, throughput, delay and average energy consumed. (3) Different values of threshold energy could be used for giving good performance under different conditions of (1) simulation time and (ii) number of nodes.