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In this paper, the authors propose a distributed and self-organizing scheme for establishing efficient energy-saving concurrent data dissemination for wireless sensor networks. The proposed protocol is aimed at applications where all sensor nodes need to provide their current data concurrently and periodically back to the sink, whist having an option to provide instantaneous individual node data upon sensing. Hence, the scheme provides a hybrid time-driven and an event-driven mechanism. The scheme initially establishes the hop-count of sensor nodes from the sink and identifies the Highest Hop-count Nodes (HHN) of the sensor network.
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