NDLI: Enhanced PCF Protocols for Real-time Multimedia Services over 802.11 Wireless Networks

Content Provider	IEEE Xplore Digital Library
Author	Ming-Chuan Hsu Yaw-Chung Chen
Copyright Year	2006
Description	Author affiliation: National Chiao Tung University, Hsinchu, Taiwan, (Ming-Chuan Hsu)
Abstract	In wireless network environment, different traffic classes exhibit a variety of characteristics and service requirements [4,5,7], such as data rate, maximum tolerable packet error rate and delay bounds. Although IEEE 802.11e [9,10] addresses the QoS issues and classifies the traffic into four prioritized access categories, there is still no guarantee of real-time transmission service due to the lack of an effective coordinating mechanism [11] among contending clients and a satisfactory scheduling method for various delay-sensitive packets from multiple traffic flows. In this work, we propose a nearly complete polling list solution to IEEE 802.11 WLAN by enhancing the original PCF protocol with better demand assignment features. A flexible and fair polling list method among the various time bounds is investigated in the proposed scheme. The performance evaluation based on NS-2 network simulator [12,13] shows that our schemes are well suited for variable bit rate service in real-time multimedia applications.
Starting Page	56
Ending Page	56
File Size	298714
Page Count	1
File Format	PDF
ISBN	0769525415
ISSN	15450678
DOI	10.1109/ICDCSW.2006.46
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-07-04
Publisher Place	Portugal
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Wireless application protocol Wireless networks Telecommunication traffic Wireless LAN Error analysis Disruption tolerant networking Delay effects Bit rate Access protocols Computer science
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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