Adaptive Management of QoS Requirements for Wireless Multimedia Communications
Abstract
We present a control model, which provides response time and bandwidth requirement adaptation
in audio, video, and application sharing multipoint IP teleconferences for emerging wireless multimedia
communications. The model is based on revealing feedback controls for multimedia call preparation and
subsequent real time connection control. Case-based reasoning memory is used to associate real time
congestion (connection) controls with call preparation controls and user QoS profiles. Web agents are used
to capture user and application multimedia call profiles observed at the application layer and transfer them
into the case memory. RTP statistics are used to identify the connection management feedback controls
for the network layer. Real-time adaptation at the network layer and above is made possible by using
hierarchical coding techniques. The proposed adaptive management architecture is illustrated by a case
memory representation of call preparation feedback controls, RTP feedback control tests for providing
audio stream bandwidth adaptation, and configuration of integrated experiments.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.Collections
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