Research On Fault-tolerant WSN Routing Mechanism In Distributed Networks Based On Energy Perception

With the advancement of microelectronics,computing and wireless communication technology,the development of Wireless Sensor Network(WSN)has been promoted,which has broad application prospects in the fields of national defense military,environmental monitoring,traffic management,medical care and manufacturing,etc.Wireless sensor network is composed of a large number of sensor nodes with data sensing,information processing and wireless communication capabilities in multi-hop and self-organized manner.However,sensor nodes are vulnerable to link or node failures due to their limitations in energy supply and computing capacity,the sensed data can not be relayed to the destination node,so as to degrading the Quality of Service(QoS)of the entire network,in severe cases,large-scale network failure will occur.Aiming at the effect of network failure caused by uneven energy consumption of sensor nodes on data trasmision,an energy-efficient distributed fault-tolerant routing mechanism(EDFRM)for wireless sensor network is proposed in this paper.EDFRM consists of three interrelated algorithms: heterogeneous distributed energy efficient clustering algorithm(HDEEC)for cluster heads selection,k-convex incoherent path routing algorithm(kCIPR)to help cluster heads obtain k-convex incoherent paths to convergence center,and routing maintenance mechanism(RMM)used for path repair.With the joint application of these three algorithms,the efficient data transmission is realized.Theoretical analysis and simulation results show that the proposed routing mechanism can effectively improve the fault tolerance and QoS of the network while reducing energy consumption.