Science & Engineering Research Support soCiety (SERSC)
Fault recovery is vital to WSNs since node death is a typical fault. Aiming to recover the "Coverage hole", a recovery algorithm based on Minimum Distance Redundant Nodes (MDRNs) is proposed in this paper. By employing redundant nodes carefully, the recovery algorithm is deployed on the sink node with unconstrained energy consumption which knows the locations of all active nodes and redundant nodes in the WSNs. Simulation results demonstrate that, by choosing appropriate number of redundant nodes, this algorithm will have great recovery accuracy and coverage quality, also achieve the purpose of prolonging the lifecycle of WSNs.