A tuning system for distributed multimedia applications
Klara Nahrstedt, Lintian Qiao · 1996
Distributed multimedia applications such as Video-On-Demand (VOD) will need user-friendly graphical interfaces to specify and control compressed continuous media and their service behavior according to the quality perceived by the human user. This requires a new extension of the Quality of Service (QoS) concept to incorporate the perceptual quality. In this paper, we investigate services for supporting perceptual quality and propose a userfriendly and robust tuning system. Our tuning system extends adaptive and tuning services currently used at the application subsystem level and it enables the specification, monitoring and user-controlled adaptation of perceptual QoS. Furthermore, all services in the tuning system have the goal of (1) modularity so that they can be plugged and played in a distributed multimedia application, and (2) graceful degradation of perceptual QoS. The paper discusses in detail the QoS concepts, services and protocols, which are the basis of our tuning system d...