Performance evaluation of end-to-end QoS using prototyped VOD system

In order to realize multimedia applications such as VOD (Video-on-Demand) on highspeed networks, a client-agent-server video system which provides continuous media data such as audio and video to users has to guarantee suitable QoS (Quality of Service) in accordance with users' requirements, and available computing and network resources during providing media data to users. Therefore the client-agent-server system must include functions which guarantee end-to-end QoS between client and server from the application through network layers. In this paper, we define a Media Coordinate System which has QoS functions, specify QoS negotiation protocols, implement the media coordinate system as a prototyped Video-on-Demand and evaluate its performance.