IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
Online ISSN : 1745-1337
Print ISSN : 0916-8508
Special Section on Multi-dimensional Mobile Information Networks
Power Saving Scheme Suitable for Wireless LAN in Multimedia Communications
Takefumi HIRAGURIMasakatsu OGAWAMakoto UMEUCHITetsu SAKATA
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2009 Volume E92.A Issue 9 Pages 2184-2190

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Abstract

Wireless LAN access is now being offered by small personal terminals in addition to laptops. Since these terminals have very limited battery capacity, wireless LAN interfaces that offer some form of power saving are essential. IEEE802.11. specifies PSM (Power save management); it reduces power consumption by suspending some communications functions. However, since Multicasting and Broadcasting are invariably received by all terminals regardless of PSM, the terminals unnecessarily consume electric power, even if the terminal is not multicast subscriber. This paper clarifies this problem, and proposes a scheme for reducing power consumption. The results of an experiment confirm its excellent performance.

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© 2009 The Institute of Electronics, Information and Communication Engineers
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