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Paper Abstract and Keywords
Presentation 2006-03-02 10:40
Window control for fairness issue between uplink and downlink flows in IEEE 802.11 wireless LANs
Hirantha Abeysekera, Takahiro Matsuda, Tetsuya Takine (Osaka Univ.)
Abstract (in Japanese) (See Japanese page) 
(in English) This paper considers a fairness issue between uplink and downlink flows in IEEE 802.11 wireless LAN, where uplink flows dominate over downlink flows in terms of wireless bandwidth usage. We propose a simple solution to improve the fairness among all flows by means of adjusting the minimal contention window size (CWmin) at the access point. Note here that CWmin is a parameter of IEEE 802.11 MAC protocol. The proposed scheme can be easily implemented, because no modification is required in the MAC protocol of wireless terminals. Furthermore the proposed scheme requires only the number of downlink flows in adjusting CWmin at the access point, even though the throughput of each flow is determined by the numbers of downlink and uplink flows in general. We evaluate the performance of the proposed scheme for TCP and UDP traffic flows through simulation experiments.
Keyword (in Japanese) (See Japanese page) 
(in English) wireless LAN / contention window / fairness / uplink / downlink / bidirectional traffic / /  
Reference Info. IEICE Tech. Rep., vol. 105, no. 628, IN2005-171, pp. 91-96, March 2006.
Paper # IN2005-171 
Date of Issue 2006-02-23 (IN) 
ISSN Print edition: ISSN 0913-5685
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Conference Information
Committee IN NS  
Conference Date 2006-03-02 - 2006-03-03 
Place (in Japanese) (See Japanese page) 
Place (in English) Rizzan Sea-Park Hotel Tancha-Bay (Okinawa) 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To IN 
Conference Code 2006-03-IN-NS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Window control for fairness issue between uplink and downlink flows in IEEE 802.11 wireless LANs 
Sub Title (in English)  
Keyword(1) wireless LAN  
Keyword(2) contention window  
Keyword(3) fairness  
Keyword(4) uplink  
Keyword(5) downlink  
Keyword(6) bidirectional traffic  
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Keyword(8)  
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 2006-03-02 10:40:00 
Presentation Time 20 minutes 
Registration for IN 
Paper # IN2005-171 
Volume (vol) vol.105 
Number (no) no.628 
Page pp.91-96 
#Pages
Date of Issue 2006-02-23 (IN) 


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