Abstract:

Density control is the common way to improve the network lifetime of large scale wireless sensor network. Many density control algorithms are based on 0～1 coverage model, whereas probability coverage model defines network coverage ability more accurately than 0～1 coverage model in real applications. A density control algorithm based on probability coverage model was presented, which can turn offredundant sensor nodes to reduce total network energy consumption and ensure adequate network coverage ability.

Key words: wireless sensor networks, density control, probability coverage model, coverage probability