On the Network Lifetime of Wireless Sensor Networks Under Optimal Power Control
نویسندگان
چکیده
In this paper we evaluate the effect of power control on the lifetime of wireless sensor networks that are equipped with fixed energy resources. We assume a data collection traffic pattern where all sensor nodes forward data to a centralized base station (sink). Asynchronous low power listening is assumed, which significantly reduces energy wastage by utilizing sleep cycles of the radio. In such networks, overhearing causes significant energy losses, especially if the network density is high. Our calculations demonstrate the benefits of applying power control and the spatial variations of energy consumption in the network under optimal power control.
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