|
Vol: 52(66) No: 4 / December 2007 An Experimental Approach of TCP Behavior in WLAN Networks Sebastian Fuicu Department of Computer Science, “Politehnica” University of Timişoara, Faculty of Automation and Computers, Bd. V. Pârvan no. 2, 300-223 Timişoara, Romania, e-mail: sebastian.fuicu@cs.upt.ro Marius Marcu Department of Computer Science, “Politehnica” University of Timisoara, Faculty of Automation and Computers, Bd. V. Pârvan no. 2, 300-223 Timisoara, Romania, e-mail: marius.marcu@cs.upt.ro Keywords: 802.11, Linux kernel, TCP/IP, network traffic Abstract The aim of this article is to present a study of TCP behavior over a wireless 802.11 link. The observations were made based on a series of measurements related to individual TCP connection, considering congestion windows, round trip time and retransmission time-out. Due to its growing popularity, more and more people are using their laptops and pocketPC to access the Internet via this technology. We investigate the behavior of TCP implementation concerning Linux kernel 2.6 and verify its conformance with the standards. References [1]Victor Clincy, Ajay Sitaram, David Odaibo, Garima Sogarwal, “A Real-Time Study of 802.11b and 802.11g”, International Conference on Systems and Networks Communication (ICSNC\'06) p. 69 [2]Ulf Lamping, “Whireshark Developer’s Guide”, Wireshark 0.99.6, 2007 [3]Sven Ubik, Pavel Cimbal, “Debugging end-to-end performance in commodity operating systems”, TERENA Networking Conference, Poznan, Poland, 6.-9. June 2005. [4]RFC 2001, “TCP Slow Start, Congestion Avoidance, Fast Retransmit, and Fast Recovery Algorithms ” [5]RFC 2581, “TCP Congestion Control” [6]Pari Sarolahti, “Congestion Control in Linux TCP”, Proc. of USENIX\'02, June 2002 [7]Mirko Franceschinis, Marco Mellia, Michela Meo, Maurizio Munafo, “Measuring TCP over WiFi: A Real Case”, WiNMee 2005, April 2005. [8]Amit P. Jardosh Krishna N. Ramachandran Kevin C. Almeroth Elizabeth M. Belding-Royer, “Understanding Congestion in IEEE 802.11b Wireless Networks”, Proceedings of the Internet Measurement Conference 2005 on Internet Measurement Conference. |