Sleep Algorithm of Wireless Sensor Network Based on Low Duty Cycle

Abstract

WSN is a wireless network composed of a large number of static or mobile sensors in a self-organized and multi-hop way, which sense, collect, process and transmit the information of the perceived objects in the geographical area covered by the network in a cooperative way, and finally send these information to the owner of network. Aiming at the problems of uneven energy consumption and long working time in low duty cycle WSN network, a node adaptive sleep algorithm is proposed in this paper. The algorithm can schedule node sleep time slot and working time slot according to the wireless link condition, so as to ensure the minimum overall energy consumption under the condition of delay constraint. Energy sensing is added to the adaptive sleep mechanism to make no line according to adaptive adjustment of residual energy of the nodes, the energy consumption of each node is balanced and the working time of WSN network is improved. The simulation analysis shows that the algorithm can effectively reduce the working time slot and energy consumption while meeting the transmission delay, so as to improve the working period of the network. Keywords-Wireless Sensor Network; Low Duty Cycle; Adaptive Sleep; Energy Sensing; Wireless Node; Sleep Slot;