Y. Guo and J. McNair (USA)
Wireless sensor networks, sleep protocols, lifetime
Environment monitoring is one of the most important applications of wireless sensor networks. To maximize the lifetime of such a network is both a worthy goal and a significant challenge. For example, continuous operation of the network ensures rapid response, but also exhausts the battery power at a rapid pace. On the other hand, periodic operation preserves battery power but may delay detection and response. In addition, the frequent start up and shut off of the sensing device will increase the possibility of the sensor’s functional failure. In this paper, we propose an adaptive sleep protocol to prolong the lifetime of the network. First, we define the sensor network architecture and provide a sensor deployment plan for hazardous environments. Then, we describe a new adaptive sleep protocol. Finally, we evaluate the performance of the protocol and show the impact of the protocol on the lifetime of the network.
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