Modelling of SACK TCP and application to the HTTP file transfer environment

Phillips, D and Hu, J 2005, 'Modelling of SACK TCP and application to the HTTP file transfer environment', in H. Hassanein and M. Waldvogel (ed.) Proceedings of the 30th Conference on Local Computer Networks, Sydney, Australia, 17-17 November 2005.


Document type: Conference Paper
Collection: Conference Papers

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Title Modelling of SACK TCP and application to the HTTP file transfer environment
Author(s) Phillips, D
Hu, J
Year 2005
Conference name Conference on Local Computer Networks
Conference location Sydney, Australia
Conference dates 17-17 November 2005
Proceedings title Proceedings of the 30th Conference on Local Computer Networks
Editor(s) H. Hassanein
M. Waldvogel
Publisher IEEE
Place of publication Piscataway, USA
Abstract It is known that analytic modelling for TCP latency is a non trivial task. Recently, some significant progress has been made, such as the comprehensive result by Sikdar et al. However, models similar to these often rely on trial and error methods such as "data fitting". This can lead to a very limited scope for the resulting model and also large estimation error. In this paper, we propose improvements to Sikdar's SACK TCP model. A new delayed acknowledgement slow start model is developed that is analytically derived from the slow start algorithm which provides a novel mechanism to model the relationship between RTT and the delayed acknowledgement timer. We introduce a simple mechanism to include time taken to send an HTTP get request to broaden the scope of our SACK TCP model to Website file transfer. Simulation and live Internet experimentation has validated our scheme.
Subjects Information and Computing Sciences not elsewhere classified
Keyword(s) TCP congestion control
networking
DOI - identifier 10.1109/LCN.2005.91
Copyright notice © 2005 IEEE
ISBN 0-7695-2421-4
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