Network working time is one of the issues that wireless sensor networks must consider.Based on the confidence information coverage model,a new sensor node relocation protocol is designed to improve the network working life of the mobile sensor network by reducing the mobile energy of the sensors involved in repairing the coverage hole.Under the concept of an information grid based on a confidence information coverage model,the protocol designs a local information grid structure for publishing and retrieving distance sensitive data,such as sensor location information,and repairing holes by usin...