The stability of the active queue management is the basis of the congestion control
most of the control parameters of the PID-AQM controller based on experience
lack of stability analysis.In order to solve the problem
particle swarm optimize the PID parameters strategy was proposed
while use the theory of stability to analysis the stability of the PSO-PID active queue management.Consider the TCP/AQM system delay
the paper transfers the delay system into non-delay system by using Taylor series expansion.The NS2 simulation results the PSO-PID algorithm shows some advantages over the PID algorithm.