Asynchronous power saving schemes for IEEE 802.11 Ad Hoc networks

Jong Hoon Youn, Cheolsoon Kang, Seungjin Park

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The IEEE 802.11 power saving scheme reduces battery consumption by switching off the transceiver whenever it is not needed. However, the IEEE 802.11 Power Saving scheme requires strict clock synchronization that is very difficult to achieve in mobile ad hoc networks. Furthermore, all nodes should periodically wake up to listen to ATM windows. This periodical listening may not be necessary for a node not involved in any communications. Therefore, in this paper, we have proposed novel asynchronous power saving schemes that achieve high energy efficiency without degrading network throughput significantly. The main idea of the proposed schemes is to dynamically adjust the length of beacon interval based on the communication demand. With this dynamic adjustment of the beacon intervals, the proposed schemes achieve both high energy-efficiency and high network throughput. As shown in our simulation study, the averaged energy consumption of one of the proposed protocol (AASPM(4)) is 40% less than that of IEEE 802.11 Power Saving Mode (PSM) while maintaining the throughput high.

Original languageEnglish (US)
Title of host publicationProceedings of the International Conference on Wireless Networks, ICWN'04
EditorsH.R. Arabnia, L.T. Yang, C.-H. Yeh
Pages395-401
Number of pages7
Volume1
StatePublished - 2004
EventProceedings of the International Conference on Wireless Networks, ICWN'04 - Las Vegas, NV
Duration: Jun 21 2004Jun 24 2004

Other

OtherProceedings of the International Conference on Wireless Networks, ICWN'04
CityLas Vegas, NV
Period6/21/046/24/04

Keywords

  • Asynchronous wakeup
  • IEEE 802.11 PSM and ad hoc networks
  • Power saving

ASJC Scopus subject areas

  • Engineering(all)

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