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Overview:

This paper proposes and analyzes a new interface idling mechanism for improving carrier-sense energy expenditure of IEEE 802.11 based wireless network interfaces. A novel protocol state analysis technique is developed for detecting time windows during which a node consumes energy due to erroneous carrier sensing. During this window, energy savings at the MAC layer is accomplished by forcing a wireless interface to a relatively low-energy idling state. At the end of this window, an interface is transitioned back to its regular receiving mode. Energy savings are realized by exploiting the difference in power consumption between the erroneous carrier sensing state and the idling state.

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Format:PDFSize:229 KB
Date:Oct 2007
Pages:6

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