Adaptive key pre-distribution model for distributed sensor networks

In this paper, a key pre-distribution model with the concept of key pool generation in distributed sensor networks (DSNs) is proposed. In this scheme, additional information is inserted into each group during key pool generation. The nodes in the DSNs can use this extra information to increase system performance. A concrete example is given to clarify this concept and prove that the added information in the scheme can greatly improve connectivity between nodes even if node deployment is sparse or non-uniform. In addition, high connectivity decreases the energy consumption of wireless communication between sensor nodes and extends the life of these nodes.