Working in low probability event scenario

small-scale monitoring network which is statically disposed is used commonly.In view of this type of wireless sensor networks’characteristics

based on hierarchical clustering theory

a fixed hierarchical clustering construction method is proposed from the topology control aspect.The method largely reduces the network energy consumption by using fixed clustering instead of general cyclical dynamic clustering

and member nodes adopting probability prediction of event-based sleep scheduling further reduce energy consumption even more.Cluster-head rotation in cluster achieves energy balance.And power control establishes reliable multi-hop routing.Simulation performance analysis shows that the construction method is significant in energy-saving

and easy to implement and apply.