Fuzzy AQM Router Design for Varying Numbers of Session TCP Networks

• Main Authors: Hong-Wu Lin, 林宏武
• Other Authors: Kuo-Hui Tsai
• Format: Others
• Language: en_US
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/67855150749937720951

碩士 === 國立臺灣海洋大學 === 資訊工程學系 === 94 === Networking researchers have proposed AQM (Active Queue Management) to be used in routers to meet the increasing demand of Internet applications. The dynamic model of Transmission Control Protocol (TCP) has been proposed such that three key parameters, number of TCP sessions, link capacity and round-trip time are related to a feedback control problem. However the number of TCP sessions was assumed to be constant in previous work. In fact, the number of sessions TCP network could vary from time to time. In this paper, we will develop a Takagi-Sugeno(T-S) fuzzy model to simulate the behavior of varying numbers of session nonlinear TCP network. Then we will use the T-S fuzzy model to design the fuzzy controller. The result of simulations shows that our controller provides robust performance when the number of TCP sessions varies from time to time.