Research on Key Node of Wireless Sensor Network Based on Degree-degree Correlations

In this paper, the problem of key nodes was discussed based on the degree-degree correlations of wireless sensor networks. The fault model of sub-network was expressed in the form of a set at first; subsequently, the concept of key nodes was proposed; finally, based on the concept of degree-degree correlations of complex network theory, both bridge-type key nodes and key node of degree correlation in fault model were defined, and their quantitative determination and analysis were proposed.