A method to alleviate unfairness between HSTCP flows with different RTT

Authors:
Dong-Chun Ahn;Seung-Joon Seok;Kyung-Hoe Kim;Chul-Hee Kang
Affiliations:
Korea University, Seoul, Korea;Kyungnam University, Masan Kyungnam, Korea;Korea University, Seoul, Korea;Korea University, Seoul, Korea
Venue:
ICOIN'06 Proceedings of the 2006 international conference on Information Networking: advances in Data Communications and Wireless Networks
Year:
2006

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Abstract

High-speed TCP (HSTCP) is a protocol that is proposed to take advantage of high capacity bandwidth of backbone network links HSTCP is able to effectively support the large scale congestion window as compared to Reno TCP HSTCP is a promising protocol that is getting most attention because it can accommodate existing regular TCP in network and can implement easily by modifying only sender side of TCP transmission protocol However, HSTCP does not reflect the property of RTT in parameters that increase the congestion window as Reno does Consequently, the flows experience the serious unfairness when they compete to get the limited resource of network Especially, the problem appears severely as RTT ratio between the flows grows larger Therefore, this paper proposes F-HSTCP as a new protocol that reflects the property of RTT as well as current window size in AIMD parameters This paper also shows that F-HSTCP can resolve the unfairness problem through simulations F-HSTCP can embrace the difference of RTT.