Reliable Delivery Scheme for Wireless Sensor Networks Based on Cooperation among Neighboring Nodes

To solve the transmission efficiency degradation problem in wireless sensor networks(WSN) due to unreliable communication links,a novel scheme NNCS that is based on cooperation among neighboring nodes is proposed for reliable data delivery in WSN.The NNCS exploits the broadcast feature of wireless channels,and passes the retransmission or forwarding responsibility to a neighboring node that has successfully snooped the data transmission,so as to achieve better transmission efficiency by reducing retransmission times.In the NNCS,related nodes compete for cooperation tasks by sending data acknowledgement according to their transmission capabilities,and snoop the channel activities to avoid interference in competition.The simulation results show that,compared with the traditional retransmission-based scheme,the NNCS can achieve a higher transmission success probability with lower cost,and effectively reduce the end-to-end transmission delay.