Title :
A dynamic quality of service framework for video in broadband networks
Author :
Reininger, Daniel ; Raychaudhuri, Dipankar ; Ott, Maximilian
Author_Institution :
C&C Res. Labs., NEC USA, Princeton, NJ, USA
Abstract :
A dynamic framework for QoS control of video in distributed multimedia applications is presented. The framework allows flexible and efficient video delivery with application-level QoS support. Key components of the framework are client QoS renegotiation, server source rate control, and dynamic bandwidth allocation. The coordinated functionality of these distributed components provides soft QoS to adaptive applications. A proof-of-concept prototype of a video browser with user-level control of soft QoS is implemented within the proposed framework. The implementation uses a distributed software architecture that represents soft QoS requirements by software objects called service contracts. These objects are exchanged among servers, network nodes, and clients to achieve distributed soft QoS control. Experiences with the prototype and its performance are discussed
Keywords :
Internet; asynchronous transfer mode; broadband networks; digital communication; multimedia communication; quality of service; telecommunication control; video on demand; adaptive applications; application-level QoS support; broadband networks; client QoS renegotiation; coordinated functionality; distributed components; distributed multimedia applications; distributed software architecture; dynamic bandwidth allocation; dynamic quality of service framework; network nodes; performance; prototype; server source rate control; service contracts; software objects; user-level control; video browser; video delivery; Bandwidth; Broadband communication; Channel allocation; Intelligent networks; Network servers; Prototypes; Quality of service; Scalability; Software prototyping; Telecommunication traffic;
Journal_Title :
Network, IEEE
