Fig. 2.From: Bi-adjusting duty cycle for green communications in wireless sensor networksThe WSNs with high node density, the active slots of nodes, are randomly allocated (Note: please ignore the brackets and the numbers in brackets), and the sensor network with no nodes waking up in the same slot within the node’s sensing range (Note: for the node with bracket in the figure, the number of the node is the number in brackets)Back to article page