earticle

영어

By relying only on the router IQSize (Instantaneous Queue Size), the IntelRate controller has shown better performances than the existing explicit congestion control protocols. It fundamentally overcomes the defects of the existing protocols that can potentially misestimate network parameters and consume too much router computation resources. However, researchers are also interested in the design of certain controller parameters and the choice of their values because they can affect the performance of the controller. In this paper, we will experimentally investigate in details the effects of two important parameters of the fuzzy logic controller: the width of membership functions and the number of linguistic variables. Using extensive OPNET simulations, we show the performance tradeoffs when choosing values for these two parameters.