Active queue management: First steps toward a new control-theoretic viewpoint

Cédric Join (1, 2) , Hugues Mounier (3) , Emmanuel Delaleau (4) , Michel Fliess (5, 2)

1 CRAN - Centre de Recherche en Automatique de Nancy
2 AL.I.E.N. - ALgèbre pour Identification & Estimation Numériques
3 L2S - Laboratoire des signaux et systèmes
4 IRDL - Institut de Recherche Dupuy de Lôme
5 LIX - Laboratoire d'informatique de l'École polytechnique [Palaiseau]

Active Queue Management (AQM) for mitigating Internet congestion has been addressed via various feedback control syntheses, among which P, PI, and PID regulators are quite popular and often associated to a Smith predictor. Here, to better account for the many uncertainties, like the round trip time or the number of TCP sessions, the above controllers are replaced by an intelligent proportional controller associated to Model-Free Control (MFC) and by forecasting techniques derived from a new approach to time series. Several computer simulations via a well accepted linear modeling, where the delay is assumed to be constant, are presented and discussed.

Mots clés: Internet congestion; active queue management; model-free control; intelligent proportional control; delay; time series; nonstandard analysis; prediction

Domaines: Web; Automatique; Systèmes et contrôle [cs.SY]; Optimisation et contrôle [math.OC]; Méthodologie [stat.ME]

Cédric Join, Hugues Mounier, Emmanuel Delaleau, Michel Fliess. Active queue management: First steps toward a new control-theoretic viewpoint. ICSC 2022 - 10th International Conference on Systems and Control, Nov 2022, Marseille, France. ⟨10.1109/ICSC57768.2022.9993853⟩. ⟨hal-03845371⟩