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http://dx.doi.org/10.7840/kics.2013.38B.8.623

Adaptive Packet Scheduling Scheme for Enhancing the PSM Performance of Mobile Devices  

Park, Young Deok (포항공과대학교 컴퓨터공학과)
Jung, Kyoung-Hak (포항공과대학교 컴퓨터공학과)
Suh, Young-Joo (포항공과대학교 컴퓨터공학과/정보전자융합공학부)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.38B, no.8, 2013 , pp. 623-631 More about this Journal
Abstract
Wireless LAN (WLAN) interface is one of the major sources drastically depleting the battery power of mobile devices such as smartphones and tablets. Most commercial mobile devices employ a power saving technique putting their WLAN interface into a sleep state when there is no network traffic, and thereby, save the battery power. However, since an access point (AP) just transmits the packet(s) received from a server to the corresponding mobile device immediately, it may cause a problem that the mobile device constantly remains in an awake state so that its battery power is rapidly drained. In this paper, we point out this problem and propose a new scheme that can save the mobile device's battery power with an adaptive packet scheduling at the AP side. From the experimental results based on a testbed, we found that the proposed scheme outperforms existing schemes over 50% in terms of power saving.
Keywords
IEEE 802.11; S-PSM; A-PSM; Tail-energy; EWT;
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