106439.fig.003a
(a) K = 1
106439.fig.003b
(b) K = 2
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(c) K = 4
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(d) K = 8
Figure 3: Four examples of executing the CKN algorithm with different values for . When , a large number of sensor nodes can turn to sleep mode, but, when , almost all sensor nodes have to be always-on. Here, black and unconnected sensor nodes are sleeping nodes.