Abstract
With the widespread use of wireless Internet and wireless LANs, different wireless technologies, such as 3G cellular networks and WLAN, will cooperate to support more users and applications with higher data rates over wider areas. When a mobile node moves between hybrid networks, a need arises for seamless vertical handoffs between different wireless networks in order to provide high performance data transmission. When an application with a TCP connection in a mobile node performs a vertical handoff, TCP performance is degraded due to packet loss even while the previous TCP state information is maintained during handoff, as 3G and WLAN have different available bandwidths. In this paper, a new congestion control algorithm is proposed for a vertical handoff that improves TCP performance by measuring the rough end-to-end available bandwidth and calculating the slow-start threshold. By ns-2 simulation it is shown that, compared to previous algorithms, the proposed algorithm enhances TCP performance during vertical handoffs.
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References
LAN MAN Standards Committee of the IEEE Computer Society: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications. IEEE Standard 802.11 (1999)
Thomson, K., Miller, G.J., Wilder, R.: Wide-area Internet Traffic Patterns and Characteristics. IEEE Network 11, 10–23 (1997)
Goff, T., Moronski, J., Phatak, D., Gupta, V.: Freeze-TCP: A True End-To-End TCP Enhancement Mechanism for Mobile Environments. In: Proceedings of IEEE INFOCOM, vol. 3, pp. 1537–1545 (2003)
Balakrishnan, H., Seshan, S., Katz, R.H.: Improving Reliable Transport and Handoff Performance in Cellular Wireless Networks. ACM Wireless Networks 1, 469–481 (1995)
Brown, K., Singh, S.: M-TCP: TCP for Mobile Cellular Networks. ACM SIGCOMM Computer Communication Review 27, 19–43 (1997)
Stemm, M., Katz, R.H.: Vertical Handoffs in Wireless Overlay Networks. ACM Mobile Networking and Applications (MONET) 3, 335–350 (1998)
Perkins, C. (ed.): IP Mobility Support for IPv4. IETF RFC 3220 (2002)
Kim, S., Copeland, J.: TCP for Seamless Vertical Handoff in Hybrid Mobile Data Networks. In: Proceedings of IEEE GLOBECOM, San Francisco, vol. 2, pp. 661–665 (2003)
Xu, K., Tian, Y., Ansari, N.: TCP-Jersey for Wireless IP Communications. IEEE J. Select. Areas Comulications 22, 747–756 (2004)
The Network Simulator ns-2, available: http://www.isi.edu/nsnam/ns
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© 2006 Springer-Verlag Berlin Heidelberg
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Hwang, A.K., Lee, J.Y., Kim, H.D., Jung, W.J., Kim, B.C. (2006). New TCP Congestion Control Algorithm Based on Bandwidth Measurement for Seamless Vertical Handoffs in Heterogeneous Mobile Networks. In: Braun, T., Carle, G., Fahmy, S., Koucheryavy, Y. (eds) Wired/Wireless Internet Communications. WWIC 2006. Lecture Notes in Computer Science, vol 3970. Springer, Berlin, Heidelberg. https://doi.org/10.1007/11750390_7
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DOI: https://doi.org/10.1007/11750390_7
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