A Novel Data Gathering Method for Large Wireless Sensor Networks

Wireless sensor networks are applied to collect desired data using wireless radio communications but they have limited life because of limited power using batteries. Energy efficient data collection method is very important to operate wireless sensor networks for a long time. This paper proposes a novel data collection method for large wireles sensor networks and ubiquities applications. A typical data collection tour using a mobile sink starts from a sensor node nearby a base station, travels all nodes of wireless sensor network by visiting each node, returns to the base sation and uploads collected data to the base station. This method is time inefficient and each node spends battery power quickly. A novel data collection method is proposed to increase energy efficiency using a mobile sink. The simulation result shows that the proposed data collection method decreases the energy consumption level by prolonging the lifetime of wireless sensor networks to 15 percents compared with LEACH.