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Adaptive sampling is proposed to improve the power efficiency of wireless sensor networks in that the sampling rate of a sensor node can change in response to the changes in the environment. To transmit the sampled data promptly, the nodes with different and dynamically changing sampling rates have to transmit at different and changing rates correspondingly, which in turn causes severe packet loss...
In-network sensor query processing is a cross-layer design paradigm in which networked sensor nodes process data acquisitional queries in collaboration with one another. As power efficiency is still one of the most severe constraints in this paradigm, we propose a distributed, cross-layer scheduling scheme for it. In this scheme, each node employs its MAC, routing, and query layers to negotiate with...
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