Study of measurement mechanism for TCP rate control parameters

In this work, an end-to-end TCP throughput control mechanism based on TCP throughput model is proposed to fulfill the users´ QoS requirements. To control end-to-end TCP throughput at single point, it is necessary to enforce a TCP connection operating at a target rate. Therefore, a measurement mechanism is proposed to derive the values of the two control parameters - packet drop rate and round trip time (RTT) - based on the throughput equations. If one wishes to control a TCP connection´s throughput, we can reversely calculate the corresponding packet drop rate and RTT. If the target rate is less than the bottleneck bandwidth, then one can control TCP connections´ end-to-end transmission rate. Through simulations, the performance of the throughput control mechanism would be evaluated to understand the pro and cons of this work. We also tune the values of system parameters and then provide a suggested setting.