Energy-efficient routing protocol depending on dynamic message communication over wireless sensor network

Abstract

We propose an energy-efficient routing mechanism for maintaining uniform distribution of each sensor's energy through shorter paths. We define two metrics - energy level and vector information. The energy level describes how much the energy of the sensor remains and the vector information explains whether the direction towards the sink. Using the two factors, we choose leaders with higher energy level and the vector information when any sensor node tries to send the sink some messages. Whenever the sensor node delivers each one message to the sink, the selected leader node may be different dynamically through our defined two metrics. So we expect that the energy level of every sensor node can be maintained uniformly over the entire sensor network. Therefore, sudden sensor failure caused by battery exhaust and network partition caused by some sensor's sudden deaths can be prevented. We analyze our DyMC through evaluating and comparing with existing research such as directed diffusion. © Springer-Verlag 2006.