Two-Stage Selection Cooperation Based on Feedback for Clustered Wireless Sensor Networks

In large-scale wireless sensor networks, where clustering as an effective method is often used to manage the energy consumption, energy efficiency attracts so much attention that few people pay attention to the transmission reliability. This paper focuses on data transmission reliability of clustered wireless sensor networks, and proposes a two-stage selection cooperation based on feedback to insure all of data transfer, from sensor node to cluster head and from cluster head to sink node. Furthermore, in cluster head selection, we take channel value and residual energy into consideration so that the nodes with more remaining energy and better channel quality have greater probability to be elected cluster head. Simulation results show that proposed cooperative protocol can improve transmission reliability and cluster head selection with channel value can balance energy consumption which leads network to a longer lifetime.