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Dynamic Control of Timer for Receiving Beacon in Low Power Wireless Interface  

Song, Myong-Lyol (호서대학교 정보통신공학과)
Abstract
In IEEE 802.11b wireless network, stations synchronize themselves to the beacons periodically sent by the access point (AP) when they are running in low power mode. Stations stay awake for enough time to receive beacon because it is delayed in AP if the wireless channel has been being used by other traffic at each scheduled instant. In this paper, we propose a method that measures the delay of received beacons and calculates wake-up interval of station to receive the next one. Beacon transmission delay at the AP is analyzed. The proposed method is simulated and its characteristics are described in the analysis. The result measured in terms of station's wake-up interval shows some enhancement in energy consumption.
Keywords
Beacon delay; Wake-up; Low power; Wireless LAN; IEEE 802.11b;
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