An Emission Rate Adaptive Algorithm of Wireless Sensor Networks

Energy consumption of wireless nodes in WSNs increases with transmission duration. To reduce it so as to extend the entire network lifecycle at no sacrifice of communication reliability and quality, this paper first proves experimentally the relationship of communication distance to emission rate is of a logistic curve and find the receiving current increases linearly with the emission rate, Then, an emission rate adaptive (ERA) algorithm is proposed to maximizes data transmission rate in the constraint of communication distance and packet loss ratio, so as to reduce communication duration and to improve network lifecycle. Simulation results from application of ERA in existing network protocol algorithms LEACH, SEP and DEEC, improves its effectiveness.