IP网络环境下多媒体同步机制自适应性的研究

Transmissions of video streams over the Internet and scheduling of video in streaming servers are studied in this project. We proposed a novel application-layer congestion control scheme for stored video based on rate estimation at the receiver. In this project, a number of scheduling algorithms for different kinds of videos, such as short clips and VBR streams, are also proposed to maximize the throughputs of a streaming server. Some of the above algorithms have been implemented in a broadband multimedia application platform that was installed with funds of a companion project.

由于目前国内外在多媒体同步方面的研究成果不能适合于IP网络环境下的多媒体通信要求，因此，针对IP网络的特点，本报告提出了同步机制应当具备对各种形式的网络负载变动和网络异构性的自适应能力的新思想，并制定了包括对负载状况的监测和分析、各类同步控制算法及其集成方式以及同步机制与IP网络综合业务模型的结合等内容的全面的研究方案。