Abstract—The performance of DCCP TCP-like degrades significantly over long delay link networks. Despite the TCP-like congestion control mechanism follows the TCP SACK, the performance is really affected by the congestion window growth algorithms as employed by Jacobson based TCP variants. In this paper, all the experiments are done using Network Simulator ns-2, and we manipulated the congestion window size drop during congestion avoidance phase to enhance the performance of DCCP TCP-like over long delay link networks. Instead of halving the current congestion window when congestion events are detected, the reduction of current congestion window drop has been shown to improve the DCCP TCP-like throughput with minimal drop packet percentage.
Index Terms—Congestion window, DCCP, TCP-like
S. A. Nor, S. Hassan, O. Ghazali, M. M. Kadhum, and Mohd. H. Omar are with the Universiti Utara Malaysia (e-mail: firstname.lastname@example.org, email@example.com, firstname.lastname@example.org, email@example.com, firstname.lastname@example.org). All of the authors are the member of the InterNetWorks Research Lab, School of Computing, College of Arts and Sciences, Universiti Utara Malaysia.
Cite: Shahrudin Awang Nor, Suhaidi Hassan, Osman Ghazali, Mohammed M. Kadhum,and Mohd. Hasbullah Omar, "Performance Enhancement of DCCP TCP-like over Long Delay Link Networks," International Journal of Modeling and Optimization vol. 2, no. 3, pp. 315-319, 2012.