An approach to reliable scripts dissemination in wireless sensor networks

Application reconfiguration is a primary method to improve the application flexibility of wireless sensor networks. This paper presents an approach to reliable scripts dissemination in wireless sensor networks supporting application reconfiguration. Firstly, we introduce the role-based hierarchical architecture to organize sensor nodes effectively. Then, a novel minimum diameter multicast tree algorithm and the virtual cluster flooding scheme are presented to construct the scripts dissemination tree to adapt to heterogeneous sensor nodes. Moreover, a cluster-based hybrid error recovery strategy is proposed to decrease the energy consumption on the premise of guaranteeing the reliability of scripts transmission. Finally, we represent the energy consumption model and discuss the factors affecting the performance of our scheme. Simulation studies are carried out to validate our conclusion.