Simulations of TCP congestion control mechanism model with large buffer size

The Transmission Control Protocol (TCP) is the main protocol of the transport layer in today´s Internet. Many works have studied the performance of TCP and researchers are trying to analytically characterize the throughput of TCP´s congestion control mechanism. We summarize previous works and present the simulation result with large buffer size and give a qualitative analysis of the result. Our conclusion is that the RTT is not increased by a linear amount, but by a quadric amount when the buffer size of the bottleneck is large enough. Our goal is to estimate the average queue length of the buffer size and develop a TCP model based on RTT and the average queue length