Enhancing failure recovery in wireless sensor network based on Grade Diffusion

Wireless sensor networks (WSNs) are an important instrument for observing distributed remote environments. In most applications, failure is a serious problem. There are numerous algorithms of failure detection and failure recovery. However, most of them may reduce network lifetime or achieve poor accuracy. This paper proposes failure recovery algorithm based on Grade Diffusion with using Shortest Save Path. The sensor node may arrange the sensor node's routing and save some backup nodes depending on the shortest path to reduce the energy consumption for the re-looking routing. In case the direction is determined based on the amount of power required, the sensor node's routing is broken. In the simulation, the proposed algorithm is measured by power consumption, fault detection accuracy, number of hops, number of dead nodes, and time number of neighbour nodes.