Modelado y análisis transitorio de un sistema de distribución de vídeo bajo demanda

The dramatic growth of Internet and the need of certain Quality of Service (QoS) guarantees of the video-streaming applications make necessary to ensure end-to-end QoS. This paper presents a tool to evaluate the performance of a video-streaming system. This tool provides an estimated QoS given to the user in the connection moment, thus the user can decide to accept or to reject its service demand. Moreover, the system could charge the clients for a tightly service, meanwhile making efficient use of the available bandwidth. In this paper, the analyzed video-streaming architecture is composed of three elements: the MPEG video encoder, the traffic shaper and the supervisor and controller subsystem. It supplies smoothing and control functions to provide a guaranteed QoS over an open broadband network like Internet.