Steady State and Transient State Analysis of TCP and TCP-Friendly Rate Control Mechanism

摘要

In recent years, various real-time applications in the Internet have been emerging with rapid increase of the net-work bandwidth. As a congestion control mechanism for real-time applications, TFRC (TCP-Friendly Rate Control) has been attracting attention. In this paper, we analyze the steady state and the transient state behavior of TCP and TFRC when both TCP and TFRC flows co-exist in the network. First, we model the network with both TCP and TFRC connections as a discrete time system. We then derive the steady state performance (i.e., throughput of TCP and TFRC and packet loss probability in the network) and the transient state performance (i.e., stability and convergence speed of TCP and TFRC) by applying control theory to our analytic model.