COS-Slow-Start: A New Strategy of TCP Slow-start

The congestion control is a most important protocol, which improves the Internet’s stability and robustness. This paper investigates thecurrent standard slow-start algorithm of TCP congestion control mechanism and its actual problem. A new variant slow-start scheme called"COS-Slow-Start" is presented. Mathematics theory analyses and proves that this new scheme can obviously improve the stability and efficiency ofnetwork. NS2 simulation results show that it can significantly reduce both packet losses and traffic burstness, and increase the bandwidth utilizationratio.