Robust Congestion Control for the Internet
Glenn Vinnicombe (CUED)
The mechanisms for regulating traffic on the internet constitute one
of the largest automatic control systems yet developed. Unfortunately,
there are no guarantees as to the stability of this system - indeed
large oscillations in flow rates (which are detrimental to many
applications) are often seen. Key features of this control problem
are its necessarily decentralized nature and the fact that feedback
from the network about congestion is subject to appreciable delay
(both due to the finite speed of light). This talk will present
techniques for analysing the stability of this and similar systems,
and also modifications of the usual algorithms which can guarantee the
robust stability of a network with arbitrary topology and heterogenous
round trip times.
Back to
Control Seminars Page