On reliability modeling for wireless sensor networks

Taking aim at the features of wireless sensor network (WSN) system, such as large scale, easy failure and distributive type, the network model and the task model of WSN system were given, the reliability model of the system based on the task was established, to realize the reliability estimation from a single task to the whole system. Taking aim at the representative cluster topology structure of WSN, a modeling example was given. The presented method provides basis and reference for the task division and the selection and the optimization of topology structure in the phase of WSN system design.