Lifetime of asynchronous wireless sensor networks with multiple channels and power control

We consider wireless sensor networks with data collection traffic that apply asynchronous duty cycling to conserve energy, which is common in many environmental monitoring applications. Under these assumptions, the effect of overhearing dominates the energy consumption of the nodes. We propose multichannel operation with dynamic channel selection and power control for reducing the effect of overhearing in such asynchronous networks. A mathematical model is presented to calculate the maximum network lifetime under these considerations.

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