Queue oscillation suppression in large-scale networks by extended network disturbance

It is quite common that the network environment may exhibit time-varying time delays which is the major source of queue oscillation and may destroy stability for a closed-loop connection. This study proposes a transmission congestion control strategy in large-scale wired/wireless network with transmission control protocol under random early detection. The task of time-delay compensation is accomplished here by introducing a pseudo disturbance, named extended network disturbance (END), which characterises the time-delay effect on the system behaviour, and extending to END-based control design. A feedback controller for the purpose is proposed to stabilise the large-scale system. The developed method has been verified using the network simulator.