【摘要】 分布式多媒体系统需要强有力的服务质量ＱｏＳ（ＱｕａｌｉｔｙｏｆＳｅｒｖｉｃｅ）管理机制。本文从分析现有网络系统在ＱｏＳ管理方面的不足出发，结合分布式多媒体系统的特点，归纳出有关分布式多媒体系统ＱｏＳ管理的基本观点及应该具备的基本功能；然后，提出一种ＱｏＳ管理模型，给出该模型的逻辑结构和工作过程。更多还原

【Abstract】 Distributed multimedia systems need powerful QoS (Quality of Service) management mechanisms. In this paper, starting from describing the drawbacks of the QoS management mechanisms in the existing computer networks, combining with the features in distributed multimedia systems, we induce those basic viewpoints and functions on the QoS management in the distributed multimedia systems. Then, a QoS management model is presented, and its logical structure and working process are described.更多还原