Presenting an improved method to reduce power consumption by scheduling sleep and wakeup periods of nodes in wireless sensor networks

Abstract

Wireless Sensor Networks (WSN) is an emerging technology in today's world. Wireless sensor networks have been prominent technologies in many fields, so reducing network energy consumption and increasing network lifetime is very important. To achieve this goal, cluster-based sleep/wake scheduling method is proposed. In this method, some nodes are considered as initial nodes through which decisions are made about the heads of clusters. In each cluster, the cluster head selects a node with the highest energy and keeps it in active mode and sends the remaining nodes to sleep mode. Then again, the initiating nodes collect the remaining energy details of these clusters and compare it with the standard threshold value. If the cluster energy is less than the threshold value, then that particular cluster will be sent to sleep mode. Finally, transmission is done by the active cluster to the sink node. Through this way, it is possible to reduce the energy consumption in the network and increase the lifespan of the network. By simulating the results, it is proven that the proposed method reduces the energy consumption and increases the packet delivery ratio.