NDLI: A Selectivity Function Scheduler for IEEE 802.11e

Content Provider	IEEE Xplore Digital Library
Author	Bourawy, A.A. AbuAli, N.A. Hassanein, H.S.
Copyright Year	2009
Description	Author affiliation: Telecommunications Research Laboratory, School of Computing, Queen's University, Kingston, ON, Canada K7L 3N6 (Hassanein, H.S.) \|\| College of Information Technology, UAE University, Al-Ain, P.O. 17555, U.A.E. (AbuAli, N.A.) \|\| Department of Electrical and Computer Engineering, Queen's University, Kingston, ON, Canada K7L 3N6 (Bourawy, A.A.)
Abstract	The IEEE 802.11e standard defines a reference scheduler that allocates transmission opportunities (TXOP) to traffic streams based on mean data rate and minimum physical rate. However, the reference scheduler is only efficient for streams with strict constant bit rate (CBR) characteristics. This paper presents a scheduling scheme named as the Selectivity Function Scheduler (SFS) for the IEEE 802.11e Hybrid Coordination Function (HCF) Controlled Channel Access (HCCA). The SFS enhances the procedure of computing the number of variable sized packets by not only considering the new arrivals, but also accounting for the packets remaining in the queue due to channel conditions. SFS incorporates a selectivity function that assigns polling priorities to already admitted streams based on their actual requirements. The performance of the proposed SFS is evaluated and compared with the reference scheduler defined by the standard. Simulation results show that the SFS outperforms the standard scheduler in terms of enhancing streams throughput, reducing the packet dropping ratio, and maintaining high fairness among different traffic streams.
Starting Page	950
Ending Page	955
File Size	3571343
Page Count	6
File Format	PDF
ISBN	9781424446728
ISSN	15301346
DOI	10.1109/ISCC.2009.5202316
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-07-05
Publisher Place	Tunisia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Processor scheduling Traffic control Streaming media Educational institutions Information technology Physics computing Telecommunication computing Telecommunication standards Communication system traffic control Bit rate
Content Type	Text
Resource Type	Article
Subject	Signal Processing Mathematics Computer Networks and Communications Computer Science Applications Software

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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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