This paper addresses the optimal rate control in a communication
network consisting of multiple users, transmitting
video. We suggest that rate control in the Internet should take
the signal properties into account. An optimal distribution of
rates should maximise the aggregate quality of the received
signals. This paper addresses video sequences specifically, but
the results are expected to hold for more generalized signals as
well. The optimal transmission rate of a user will vary in time.
This is due to its dependence on time-varying parameters such as
the traffic routing, network topology and the demands of other
users. Moreover, the optimal transmission rate is dependent on
the metric selected to describe the video quality. We show that
when congestion is controlled `correctly' the optimal distribution
of rates is an attractor. Using the proposed rate control
mechanisms, the transmission rates will then converge weakly
towards this attractor. The algorithm for rate control mechanisms
for video transmission is then given. The proposed control
mechanisms are directly implementable in the Internet without
requiring intelligent feedback from the Internet gateways.
Simulations using the proposed congestion control mechanisms
have been conducted using different metrics to describe the
video quality.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.