Adaptation Latency and Throughput of TCP Congestion Control Schemes on Vertical Handoff 


Vol. 32,  No. 2, pp. 124-132, Feb.  2007


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  Abstract

Where a wireless LAN and a cellular network coexist, a mobile node has to experience vertical handoffs to move between them. Immediately after the vertical handoffs, TCP must need adaptation latency to adjust its congestion window to the proper size at a newly arrived network to use full of a new end-to-end available bandwidth. Even though SACK TCP has the best performance among other regular TCPs in the previous studies, it still cannot use full of the new available bandwidth quickly due to its inefficient increasing way of congestion window. BIC TCP, that becomes a popular TCP in long fat networks, has great feature working well against vertical handoffs by increasing congestion window exponentially with TCP connection sustained. In this paper, we derive adaptation latency of SACK TCP and BIC TCP numerically, and verify them by simulations. We also find that the shorter adaptation latency of BIC TCP produces higher throughput than SACK TCP on vertical handoffs. Consequently, to get higher performance on vertical handoff situations, we propose to use BIC TCP.

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  Cite this article

[IEEE Style]

W. Seok, G. Lee, J. Kwak, S. Kim, "Adaptation Latency and Throughput of TCP Congestion Control Schemes on Vertical Handoff," The Journal of Korean Institute of Communications and Information Sciences, vol. 32, no. 2, pp. 124-132, 2007. DOI: .

[ACM Style]

Woojin Seok, Giljae Lee, Jaiseung Kwak, and Sangha Kim. 2007. Adaptation Latency and Throughput of TCP Congestion Control Schemes on Vertical Handoff. The Journal of Korean Institute of Communications and Information Sciences, 32, 2, (2007), 124-132. DOI: .

[KICS Style]

Woojin Seok, Giljae Lee, Jaiseung Kwak, Sangha Kim, "Adaptation Latency and Throughput of TCP Congestion Control Schemes on Vertical Handoff," The Journal of Korean Institute of Communications and Information Sciences, vol. 32, no. 2, pp. 124-132, 2. 2007.