Dynamic event data aggregation in wireless sensor networks

Data aggregation is an efficient method to decrease the energy consumption in wireless sensor networks. The structure based data aggregation algorithm is not suitable for the application of dynamic events, because the structured sensor network requires higher communication overheads to capture the event when the data sources are changing dynamically. We propose an energy efficient data aggregation algorithm utilized for dynamic event in wireless sensor networks. In this algorithm, the sensor nodes utilize the advantage of wireless channel that the energy consumption for broadcasting is approximately equivalent to that for sending to just one neighbor. Data are aggregated among nodes by one time broadcasting. Geography based routing method is used in data aggregation and transmit the data to the remote sink node. Simulation results show that the proposed data aggregation algorithm can decrease the maximum and mean energy consumption of sensor nodes highly in dynamic events.