Stability Analysis of Linearized Fluid-flow TCP Model
Dejin Wang · Kongzhi yu juece · 2005
The small-signal stability analysis of fluidflow congestion TCP model is discussed.First,the TCP model is linearized about the operating point.Then,the delay-dependent stability of the closed-loop system is analyzed when utilizing the proportional feedback active queue management(AQM),and a stability criterion is obtained with less conservatism.The proposed criterion exhibits the relation between the proportional gain and the parameters of network.Finally,the problem is converted to the generalized eigenvalue problem,so that the maximum proportional gain can be optimized.Computer simulation shows that the proportional gain is dependent on the round-trip time reciprocally.