Title page for etd-0726110-111123


[Back to Results | New Search]

URN etd-0726110-111123
Author Jyum-Hao Jiang
Author's Email Address No Public.
Statistics This thesis had been viewed 5356 times. Download 9 times.
Department Computer Science and Engineering
Year 2009
Semester 2
Degree Master
Type of Document
Language zh-TW.Big5 Chinese
Title A Power Saving Mechanism for Web Traffic in IEEE 802.11 Wireless LAN
Date of Defense 2010-07-20
Page Count 49
Keyword
  • wireless networking
  • Web
  • HTTP
  • TCP
  • IEEE 802.11
  • PSM
  • energy saving
  • Abstract Web browsing via Wi-Fi wireless access networks has become a basic function on a variety of consumer mobile electronic devices, such as smart phones, PDAs, and the Apple iPad. It has been found that in terms of energy consumption, wireless communications/networking plays an important role in mobile devices. Since the power-saving mode (PSM) of the IEEE 802.11 a/b/g standard is not tailored for the HTTP protocol, we propose a novel power saving scheme that exploits the characteristics of web applications. After sending HTTP requests, the proposed power saving scheme updates the estimated value of RTT based on the information contained in the TCP timestamp header field. Next, the proposed scheme adjusts the value of the listening period based on the estimated value of RTT. When all TCP connections have been closed, the wireless network card could enter the deep-sleeping mode. In this case, the value of the listening period could be larger than one second, since the user is reading the webpage and is unlikely to send another HTTP request within one second. The usage of the deep-sleeping mode can significantly reduce the power consumption of mobile devices.
    Advisory Committee
  • Rung-Hung Gau - chair
  • Wei Kuang Lai - co-chair
  • CHUN-HUNG LIN - advisor
  • Files
  • etd-0726110-111123.pdf
  • indicate in-campus access in a year and off_campus not accessible
    Date of Submission 2010-07-26

    [Back to Results | New Search]


    Browse | Search All Available ETDs

    If you have more questions or technical problems, please contact eThesys