Date Added: Nov 2012
Dynamic duty cycling, where a node's duty cycle is adapted according to observed context (e.g., local traffic, other nodes duty cycles), is commonly used by Wireless Sensor Networks (WSNs) to reduce energy consumption. Currently, duty cycles are assigned for every node in the network because it is assumed that all nodes are potential participants in transmissions. Receiver-based protocols, on the other hand, involve transmissions only among a subset of network nodes. Therefore, duty cycling may be limited to those nodes while the other nodes remain in an extended low-power state. In this paper, the author develop a duty cycle assignment algorithm for the nodes that participate in transmissions by employing two phases.