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Paper Abstract and Keywords
Presentation 2005-02-18 09:30
A RTT Estimation Method on TCP Communication in Passive Measurement
Satoshi Ohzahata, Hideaki Suzuki, Yoichi Hagiwara, Matsuaki Terada, Konosuke Kawashima (TUAT)
Abstract (in Japanese) (See Japanese page) 
(in English) In TCP communication, Round Trip Time (RTT) is indispensable for the congestion control and gives large impact for the communication performance. When we evaluate TCP performance, information of RTT during
the communication is an important factor but it is di±cult to measure by the passive measurement. In this paper we propose a passive measurement method for estimating RTT in communication by using IP's ID feld and seqence number of TCP. By the proposed method, we can identify which ACK segment is for the data segment even when a sender sends several segments in a congestion window. We also estimate the number of in-fight-segments and cwnd size in the sender by using the proposed RTT estimation method.
Keyword (in Japanese) (See Japanese page) 
(in English) RTT estimation / TCP / Passive measurement / in-flight segments / cwnd size / / /  
Reference Info. IEICE Tech. Rep., vol. 104, no. 659, IN2004-185, pp. 1-6, Feb. 2005.
Paper # IN2004-185 
Date of Issue 2005-02-11 (IN) 
ISSN Print edition: ISSN 0913-5685
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Conference Information
Committee IN  
Conference Date 2005-02-17 - 2005-02-18 
Place (in Japanese) (See Japanese page) 
Place (in English) Aichi University of Technology 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To IN 
Conference Code 2005-02-IN 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A RTT Estimation Method on TCP Communication in Passive Measurement 
Sub Title (in English)  
Keyword(1) RTT estimation  
Keyword(2) TCP  
Keyword(3) Passive measurement  
Keyword(4) in-flight segments  
Keyword(5) cwnd size  
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1st Author's Name Satoshi Ohzahata  
1st Author's Affiliation Tokyo University of Agriculture and Technology (TUAT)
2nd Author's Name Hideaki Suzuki  
2nd Author's Affiliation Tokyo University of Agriculture and Technology (TUAT)
3rd Author's Name Yoichi Hagiwara  
3rd Author's Affiliation Tokyo University of Agriculture and Technology (TUAT)
4th Author's Name Matsuaki Terada  
4th Author's Affiliation Tokyo University of Agriculture and Technology (TUAT)
5th Author's Name Konosuke Kawashima  
5th Author's Affiliation Tokyo University of Agriculture and Technology (TUAT)
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Speaker Author-1 
Date Time 2005-02-18 09:30:00 
Presentation Time 25 minutes 
Registration for IN 
Paper # IN2004-185 
Volume (vol) vol.104 
Number (no) no.659 
Page pp.1-6 
#Pages 6 
Date of Issue 2005-02-11 (IN) 

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