TCP CAE : Improving Wireless TCP under Reverse Background Congestion through Comparative ACK-based Estimator


Jae-Hyun Kim, Hyun-Seung Choo, Journal of Information Processing Systems Vol. 9, No. 4, pp. 21-28, Aug. 2008  


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Abstract

TCP receivers deliver ACK packets to senders for reliable end-to-end transfer. When ACK packets are not transferred properly because of network congestion, the performance of TCP degrades. This paper proposes a reverse congestion warning mechanism and a congestion handling mechanism in heterogeneous networks with heavy background traffic in the backward direction. Help from TCP receivers or hardware such as routers and gateways other than the ACK packets themselves is not necessary. TCP senders compare the arrival intervals of ACK data passed from receivers and the difference in t imestamp values echoed by receivers. According to the simulation results using the NS-2 network simulator, the proposed scheme shows a performance elevation of 20% greater than Reno, 150% greater than New Reno, and 450% greater than Westwood, respectively, under heterogeneous networks and that the error rate of the radio link is 1% when the backward network is congested.


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Cite this article
[APA Style]
Kim, J. & Choo, H. (2008). TCP CAE : Improving Wireless TCP under Reverse Background Congestion through Comparative ACK-based Estimator. Journal of Internet Computing and Services, 9(4), 21-28.

[IEEE Style]
J. Kim and H. Choo, "TCP CAE : Improving Wireless TCP under Reverse Background Congestion through Comparative ACK-based Estimator," Journal of Internet Computing and Services, vol. 9, no. 4, pp. 21-28, 2008.

[ACM Style]
Jae-Hyun Kim and Hyun-Seung Choo. 2008. TCP CAE : Improving Wireless TCP under Reverse Background Congestion through Comparative ACK-based Estimator. Journal of Internet Computing and Services, 9, 4, (2008), 21-28.