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Paper Abstract and Keywords
Presentation 2008-11-14 09:20
[Encouragement Talk] Contention Window Control in Multi-rate IEEE 802.11 Wireless LANs
Hirantha Abeysekera, Takahiro Matsuda, Tetsuya Takine (Osaka Univ.) NS2008-100
Abstract (in Japanese) (See Japanese page) 
(in English) The IEEE 802.11 MAC protocol supports multiple data transmission rates at the physical layer. Each station selects an appropriate data rate in transmitting a data frame. Stations with poor channel conditions typically employ lower data rates in comparison to stations with good channel conditions. Under such scenarios, the throughput of each station becomes independent of its own data rate; rather it gets bounded by the station with the lowest data rate, and this results in a serious performance degradation of the wireless LAN. This phenomenon is well-known as the performance anomaly problem in multi-rate wireless LANs. Fairness in throughput of individual stations and efficiency of network resource usage are two conflicting goals in multi-rate wireless LANs. Previous works recommend proportional fairness as the objective of resource allocation to strike a balance between these two goals and demonstrate the equivalence of proportional fairness and air-time fairness for wireless LANs. In this paper we consider provisioning of air-time fairness by controlling CWmin's of low data rate stations, in which each station receives an equal share of the wireless link occupancy time.
Keyword (in Japanese) (See Japanese page) 
(in English) IEEE 802.11 / wireless LAN / contention window / fairness / / / /  
Reference Info. IEICE Tech. Rep., vol. 108, no. 286, NS2008-100, pp. 69-74, Nov. 2008.
Paper # NS2008-100 
Date of Issue 2008-11-06 (NS) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
and
reproduction		 All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF NS2008-100

Conference Information
Committee ICM CQ NS  
Conference Date 2008-11-13 - 2008-11-14 
Place (in Japanese) (See Japanese page) 
Place (in English) Nihon University 
Topics (in Japanese) (See Japanese page) 
Topics (in English) NW management, Next generation NW architecture, Next generation NW operation architecture, traffic measurement/modeling/quality, overlay network, Next-Generation NW QoS, etc. 
Paper Information
Registration To NS 
Conference Code 2008-11-ICM-CQ-NS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Contention Window Control in Multi-rate IEEE 802.11 Wireless LANs 
Sub Title (in English)  
Keyword(1) IEEE 802.11  
Keyword(2) wireless LAN  
Keyword(3) contention window  
Keyword(4) fairness  
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1st Author's Name Hirantha Abeysekera  
1st Author's Affiliation Osaka University (Osaka Univ.)
2nd Author's Name Takahiro Matsuda  
2nd Author's Affiliation Osaka University (Osaka Univ.)
3rd Author's Name Tetsuya Takine  
3rd Author's Affiliation Osaka University (Osaka Univ.)
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Speaker Author-1 
Date Time 2008-11-14 09:20:00 
Presentation Time 25 minutes 
Registration for NS 
Paper # NS2008-100 
Volume (vol) vol.108 
Number (no) no.286 
Page pp.69-74 
#Pages 6 
Date of Issue 2008-11-06 (NS) 

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