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A Globally Stable Adaptive Congestion Control Scheme for Internet-Style Networks with Delay
 

Summary: A Globally Stable Adaptive Congestion Control
Scheme for Internet-Style Networks with Delay
Tansu Alpcan1 and Tamer Bas¸ar1
(alpcan, tbasar)@control.csl.uiuc.edu
Abstract-- In this paper, we develop, analyze and implement a
congestion control scheme in a noncooperative game framework,
where each user's cost function is composed of a pricing function
proportional to the queueing delay experienced by the user, and a
fairly general utility function which captures the user demand for
bandwidth. Using a network model based on fluid approximations
and through a realistic modeling of queues, we establish the
existence of a unique equilibrium as well as its global asymptotic
stability for a general network topology, where boundary effects
are also taken into account. We also provide sufficient conditions
for system stability when there is a bottleneck link shared
by multiple users experiencing non-negligible communication
delays. In addition, we study an adaptive pricing scheme using
hybrid systems concepts. Based on these theoretical foundations,
we implement a window-based, end-to-end congestion control
scheme, and simulate it in ns-2 network simulator on various

  

Source: Alpcan, Tansu - Deutsche Telekom Laboratories & Technische Universität Berlin

 

Collections: Engineering