Abstract

Wireless sensor networks used as a social infrastructure must be capable of differentiating and prioritizing transmission of urgent sensor information over other non-urgent information. In this paper, we developed a novel and simple network architecture, in which sensor information is classified into three traffic classes and each node activates one or more of several simple, self-organizing, and fully-distributed mechanisms in accordance with the scale of an emergency for fast and reliable transmission of urgent sensor information. In the demonstration, we show the operation of preferential transmission of urgent information under this architecture in a wireless sensor network.

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