Improving TCP-Vegas Performance over Mobile Ad-hoc Networks 


Vol. 31,  No. 3, pp. 221-231, Mar.  2006


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  Abstract

TCP is needed as a transport protocol to provide reliable end-to-end message delivery for MANETs in order to achieve a smooth integration with the fixed Internet. Particularly, TCP has its variants, namely TCP-Reno and TCP-Vegas. However, there has been no research work on extensive performance comparison of TCP-Reno and TCP-Vegas over AODV and OLSR. This paper is the first trial to perform the research by using ns-2 simulator. Through the extensive simulations, we found that which to select among routing protocols is more important than which to select among TCP variants, because the performance difference between TCP-Reno and TCP-Vegas over any selected routing protocol is not so much outstanding. Particularly, TCP-Vegas relies on an accurate BaseRTT estimation in order to decide the sending rate of a TCP Sender. However, it cannot be directly applied to MANET because a route change makes the Base RTT used over a previous path obsolete. Therefore, we propose a technique for improving the performance of TCP-Vegas by considering the route change, and show the performance improvement through simulation study.

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  Cite this article

[IEEE Style]

H. Bae, J. Song, D. Kim, J. Park, H. Kim, "Improving TCP-Vegas Performance over Mobile Ad-hoc Networks," The Journal of Korean Institute of Communications and Information Sciences, vol. 31, no. 3, pp. 221-231, 2006. DOI: .

[ACM Style]

Hanseok Bae, Jeomki Song, Dongkyun Kim, Jung-Soo Park, and Hyoung-Jun Kim. 2006. Improving TCP-Vegas Performance over Mobile Ad-hoc Networks. The Journal of Korean Institute of Communications and Information Sciences, 31, 3, (2006), 221-231. DOI: .

[KICS Style]

Hanseok Bae, Jeomki Song, Dongkyun Kim, Jung-Soo Park, Hyoung-Jun Kim, "Improving TCP-Vegas Performance over Mobile Ad-hoc Networks," The Journal of Korean Institute of Communications and Information Sciences, vol. 31, no. 3, pp. 221-231, 3. 2006.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880