An Exponential Energy Saving Strategy to Wireless Sensor Network

Energy saving strategies for wireless sensor networks, that change the sleeping time of sensor nodes as function of activity level of the sensing field, in order to improve the trade-off between the average network energy consumption and the average data delivery delay is presented in this paper. The exponential increase or decrease of sleeping time considers the event detection frequency in the sensing field as well as the level of activity of sensor forwarding sensing data of the others sensor nodes. These strategies have been simulated and the average data delivery delay was compared with the one produced by another strategy recently reported. The simulation results show that the proposed strategy reduces the energy consumption of the sensor nodes with small degradation of the data delivery delay.