GA-Based PI-PD Controller for TCP Routers
R. K. Sundaram, Prabin Kumar Padhy · International Journal of Machine Learning and Computing · 2013
Active Queue Management (AQM) is a key congestion control mechanism for reducing the packet loss and improving the network utilization in TCP/IP networks.This paper discusses previously developed PI controller for AQM and proposed a new GA-based PI-PD controller.It is able to control present congestion reactively and also avoid the incipient congestion proactively.Fast response to the changing traffic is achieved by PD to maintain a desired queue length, high link utilization and low packet loss.The optimized tuning parameters are determined by selection of an Integral Square Time Error (ISTE) as an objective/fitness function.We use ns simulation to demonstrate the practical advantage of using GA-based PI-PD controller over PI in managing constant queue length. Index Terms-Congestion control, genetic algorithm (GA)