Abstract
One of TCP’s key tasks is to react and avoid network congestion episodes which normally arise in packet switched networks. A wide literature is available concerning the behaviour of congestion control algorithms in many different scenarios and several congestion control algorithms have been proposed in order to improve performances in specific scenarios. In this paper we focus on the UMTS wireless scenario and we report a campaign of measurements that involved around 3000 flows and more than 40 hours of measurements using three different TCP stacks: TCP NewReno, which is the congestion control algorithm standardized by IETF, TCP BIC which is the default congestion control algorithm adopted by the Linux operating system, and TCP Westwood+ also available in the Linux kernel. The experimental evaluation has been carried out by accessing the public Internet using an UMTS card. Measurements of goodputs, RTTs over time, packet loss ratios, number of timeouts and Jain Fairness Indices are reported through cumulative distribution functions. Moreover, the efficiency of each TCP version in transferring files has been evaluated by varying the file size in the range from 50 KB up to 500 KB. The cumulative distribution functions reported in the paper show interesting results: 1) a single downlink flow is far from saturating the channel bandwidth; 2) considered TCP stacks provide similar results; 3) 90th (50th) percentile of the goodput of a single downlink flow is less or equal then 230 kbps (120 kbps) compared to a nominal 384 kbps UMTS downlink channel.
We would like to thank Fabio Ricciato for allowing us to use a server at FTW. This work has been partially supported by the MIUR-PRIN project no. 2005093971 ”FAMOUS Fluid Analytical Models Of aUtonomic Systems” and by Financial Tradeware S.r.l..
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References
Chan, M.C., Ramjee, R.: TCP/IP Performance over 3G Wireless Links with Rate and Delay Variation. Wireless Networks 11(1), 81–97 (2005)
Chiu, D.M., Jain, R.: Analysis of the increase and decrease algorithms for congestion avoidance in computer networks. Computer Networks and ISDN Systems 17(1), 1–14 (1989)
De Cicco, L.: Libnetmeas (2006)
Eckhardt, D.A., Steenkiste, P.: Improving wireless lan performance via adaptive local error control. In: ICNP, pp. 327–338 (1998)
Vacirca, F., et al.: An algorithm to detect TCP spurious timeouts and its application to operational UMTS/GPRS networks. Computer Networks 50(16), 2981–3001 (2006)
Balakrishnan, H., et al.: A comparison of mechanisms for improving TCP performance overwireless links. Networking, IEEE/ACM Trans. on 5(6), 756–769 (1997)
Pentikousis, K., et al.: Active goodput measurements from a public 3G/UMTS network. Communications Letters. IEEE 9(9), 802–804 (2005)
Catalan, M., et al.: TCP/IP analysis and optimization over a precommercial live UMTS network. In: Proc. IEEE WCNC 2005, vol. 3 (2005)
Kohlwes, M., et al.: Measurements of TCP performance over UMTS networks in near-ideal conditions. In: Proc. VTC 2005-Spring (2005)
Ludwig, R., et al.: Multi-layer tracing of TCP over a reliable wireless link. In: Proc. ACM SIGMETRICS 1999, pp. 144–154 (1999)
Mascolo, S., et al.: TCP westwood: Bandwidth estimation for enhanced transport over wireless links. In: Proc. ACM MOBICOM, pp. 287–297 (2001)
Floyd, S., Henderson, T.: RFC2582: The NewReno Modification to TCP’s Fast Recovery Algorithm. Internet RFCs (1999)
Grieco, L.A., Mascolo, S.: Performance evaluation and comparison of Westwood+, New Reno, and Vegas TCP congestion control. ACM SIGCOMM Computer Communication Review 34(2), 25–38 (2004)
Jacobson, V.: Congestion avoidance and control. In: ACM SIGCOMM ’88, Stanford, CA, August 1988, pp. 314–329. ACM Press, New York (1988)
Tirumala, A., Ferguson, J.: Iperf (2001)
Xu, L., Harfoush, K., Rhee, I.: Binary increase congestion control (BIC) for fast long-distance networks. In: Proc. INFOCOM 2004, pp. 2514–2524 (2004)
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De Cicco, L., Mascolo, S. (2007). TCP Congestion Control over 3G Communication Systems: An Experimental Evaluation of New Reno, BIC and Westwood+. In: Koucheryavy, Y., Harju, J., Sayenko, A. (eds) Next Generation Teletraffic and Wired/Wireless Advanced Networking. NEW2AN 2007. Lecture Notes in Computer Science, vol 4712. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-74833-5_7
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DOI: https://doi.org/10.1007/978-3-540-74833-5_7
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