Fig. 3From: A comprehensive wireless sensor network reliability metric for critical Internet of Things applications a A simple WSN consisting of a sink node, 5 SNs (n = 5) and three target points (m = 3). b The coverage of the WSN is modeled as a bipartite graph in which the target point set {t 1, t 2, t 3} and the SN set S = {s 1, s 2, s 3, s 4, s 5} are the two disjoint setsBack to article page