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当前分布式多媒体系统技术在飞速发展,其核心问题是多媒体流的服务质量(QoS)保证。对于由QoS控制来实现QoS保证,国际上不同组织和团体提出了不同的控制机制和策略。比较著名的有:1)ISO/OSI提出的基于ODP分布式环境的QoS控制,但至今仍停留在只给出了用户层的QoS参数说明和编程接口阶段,具体实现QoS控制策略并未提出;2)ATM论坛也提出了QoS控制的策略和实现[3],ATM控制是“连接预定”型(connection and reservation),其核心内
At present, the distributed multimedia system technology is developing rapidly, and the core problem is the quality of service (QoS) guarantee of the multimedia stream. For QoS assurance by QoS to ensure that different international organizations and groups put forward different control mechanisms and strategies. More famous are: 1) QoS control based on ODP distributed environment proposed by ISO / OSI, but it still stays in the phase of QoS parameter specification and programming interface only given user layer, and QoS control strategy is not proposed; 2) ATM Forum also proposed QoS control strategy and implementation [3], ATM control is “connection scheduled” (connection and reservation), its core