A Sender-Side TCP Enhancement for Startup Performance in High-Speed Long-Delay Networks

—Many previous studies have shown that traditional TCP slow-start algorithm suffers performance degradation in high-speed and long-delay networks. This paper presents a sender-side enhancement, which makes use of TCP Vegas congestion-detecting scheme to monitor the router queue, and accordingly refines slow-start window evolution by introducing a two-phase approach to probe bandwidth more efficiently. Moreover, it achieves good fairness of bandwidth utilization in coexistence of multiple connections. Simulation results show that, compared with traditional slow-start and many other enhancements, it is able to significantly improve the startup performance without adversely affecting coexisting TCP connections.

• Type: Journal
• Year: 2010
• Where: WCNC
• Authors: Xiao Lu, Ke Zhang, Cheng Peng Fu, Chuan Heng Foh
• Keywords: Computer Networks, Slow-start Window Evolution, TCP Slow-start Algorithm, TCP Vegas, WCNC 2010