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Energy Efficient Sleep Scheme for Downlink Elastic Traffic in Wireless Networks  

Lee, Jong-Wook (서울대학교 전기컴퓨터공학부, 뉴미디어통신공동연구소)
Bahk, Sae-Woong (서울대학교 전기컴퓨터공학부, 뉴미디어통신공동연구소)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.34, no.4B, 2009 , pp. 329-337 More about this Journal
Abstract
In wireless networks, maximizing throughput and minimizing energy consumption are two conflicting objectives. For elastic traffic, it is important to enhance the throughput since it directly affects the quality-of-service(QoS) of users. At the same time, the energy consumption should be minimized in order to prolong the battery lifetime of the mobile station. In this paper, we propose an energy efficient sleep scheme that considers throughput and energy saving simultaneously. The proposed scheme is designed for an efficient tradeoff between throughput and energy saving when receiving elastic traffic. Through extensive simulations, we compare the proposed scheme with the conventional scheme. Our proposed scheme outperforms the conventional one in terms of utility, i.e., user satisfaction, which is defined as inversely proportional to the weighted multiplication of service completion time and energy consumption.
Keywords
Elastic traffic; Throughput; Energy saving; Sleep mode; Utility;
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