Title :
A unifying passivity framework for network flow control
Author :
Wen, John T. ; Arcak, Murat
Author_Institution :
Dept. of Electr. Comput. & Syst. Eng., Rensselaer Polytech. Inst., Troy, NY, USA
Abstract :
Network flow control regulates the traffic between sources and links based on congestion, and plays a critical role in ensuring satisfactory performance. In recent studies, global stability has been shown for several flow control schemes. By using a passivity approach, this paper presents a unifying framework which encompasses these stability results as special cases. In addition, the new approach significantly expands the current classes of stable flow controllers by augmenting the source and link update laws with passive dynamic systems. This generality offers the possibility of optimizing the controllers, for example, to improve robustness and performance with respect to time delay, unmodeled flows, and capacity variation.
Keywords :
optimisation; stability; telecommunication congestion control; congestion based-traffic regulation; controller optimization; controller time delay; link update laws; network flow control; passive dynamic systems; source update laws; stable flow controllers; unifying passivity framework; Aggregates; Constraint optimization; Control systems; Delay effects; Lagrangian functions; Robust control; Robust stability; Routing; Steady-state; Traffic control;
Conference_Titel :
INFOCOM 2003. Twenty-Second Annual Joint Conference of the IEEE Computer and Communications. IEEE Societies
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-7752-4
DOI :
10.1109/INFCOM.2003.1208952
