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Low Power Wireless Interfacing Scheme Controlling Virtual Bitmap in IEEE 802.11b  

Song Myong-Lyol (호서대학교 정보통신공학과)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.31, no.1A, 2006 , pp. 65-71 More about this Journal
Abstract
In IEEE 802.11b wireless network, the access point(AP) sends beacons periodically to manage stations when they are running in low power mode. Stations contend for the transmission medium after they receive a beacon and continuously check its state until it becomes available. Thus the energy consumption of each station increases as the load of wireless network. In this paper, we propose a method to reduce energy consumption controlling virtual bitmap in wireless network with multiple stations. The problems of low power mode in IEEE 802.11b wireless interface are described and a new method to reduce energy consumption is proposed. The proposed method is simulated with the network simulator, ns2, and compared with the low power mode of the IEEE 802.11b. The result measured in terms of station's wakeup time shows some enhancement in energy consumption when multiple stations are communicating through the AP in wireless network.
Keywords
low power; wireless interface; contention; virtual bitmap; IEEE 802.11b;
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