Fuzzy Set-Based Analysis and Design of AQM Controller for Access Router in Heterogeneous Networks

We propose a Fuzzy Adaptive Active Queue Management Controller (FAAQMC). Its performance objectives are efficient queue utilization, regulated queuing delay, and robustness. In order to achieve efficient queue utilization, the FAAQMC controls buffer length loading of both time-varying arrival rate and departure rate. The FAAQMC regulates queuing delay by minimize buffering with small queue lengths. In order to achieve robustness the FAAQMC maintains both resource provisioning and dimensioning performance under varying network conditions including variations in the number of flows, variation in Round Trip Time (RTT), and link capacity. The FAAQMC does so by using a Transformation method with fuzzy sets as numerical representation of uncertain network parameters.