Improving TCP Performance for Downward Vertical Handover 


Vol. 32,  No. 10, pp. 638-643, Oct.  2007


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  Abstract

Interconnecting wireless local area networks (WLANs) with third generation (3G) cellular networks has become an issue of great interest. However, a Vertical Handover (VHO) causes an abrupt change in link bandwidth. Due to such a change, TCP triggers unnecessary fast retransmission during a Downward VHO (DVHO) from a cellular network to a WLAN, causing throughput degradation. Thus, we propose a new reordering mechanism for DVHO that suppresses unnecessary retransmission due to the spurious duplicate acknowledgments. We analytically investigate the throughput of TCP in the literature and our proposed scheme. Through the numerical and simulation results, it is shown that our proposed TCP achieves better performance in terms of throughput, compared with Nodupack with SACK.

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  Cite this article

[IEEE Style]

H. Kim and S. Lee, "Improving TCP Performance for Downward Vertical Handover," The Journal of Korean Institute of Communications and Information Sciences, vol. 32, no. 10, pp. 638-643, 2007. DOI: .

[ACM Style]

HoJin Kim and SuKyoung Lee. 2007. Improving TCP Performance for Downward Vertical Handover. The Journal of Korean Institute of Communications and Information Sciences, 32, 10, (2007), 638-643. DOI: .

[KICS Style]

HoJin Kim and SuKyoung Lee, "Improving TCP Performance for Downward Vertical Handover," The Journal of Korean Institute of Communications and Information Sciences, vol. 32, no. 10, pp. 638-643, 10. 2007.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880