access icon free 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.

Inspec keywords: large-scale systems; control system synthesis; radio networks; transport protocols; closed loop systems; delay systems; stability; feedback; compensation; telecommunication congestion control; time-varying systems

Other keywords: large-scale system stabilisation; queue oscillation suppression; time-delay compensation; network simulator; time-delay effect; random early detection; feedback controller; extended network disturbance; large-scale wired network; system behaviour; large-scale wireless network; transmission congestion control strategy; END-based control design; closed-loop connection; time-varying time delays; transmission control protocol; stability; pseudo disturbance; large-scale networks

Subjects: Radio links and equipment; Protocols; Time-varying control systems; Stability in control theory; Distributed parameter control systems; Control applications in radio and radar; Multivariable control systems

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http://iet.metastore.ingenta.com/content/journals/10.1049/iet-cta.2013.0625
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