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提出了一种大规模流媒体分发系统设计思路.首先,分析网络和节点异构性对流媒体传输的可信和可靠需求,构建出大规模、复杂网络环境中可信流媒体分发系统拓扑结构;然后,研究动态系统环境下能保证流媒体服务质量和各种粗细粒度调度方法,设计出自适应网络节点异构性的数据调度策略和算法;接着,研究面向流媒体的网络测量方法,基于实时流媒体传输质量的评估,提出了自适应流媒体传输调节的方法;最后,分析了流媒体系统提供服务的机理,确定系统的状态信息和关键数据,分析各种故障和攻击情况下系统的可用性,提出了流媒体传输故障检测方法和系统恢复方法.
A design idea of large-scale streaming media distribution system is proposed.Firstly, the credible and reliable requirements of network and node heterogeneity for streaming media transmission are analyzed to build a topological structure of the trusted streaming media distribution system in a large-scale and complex network environment. Then , Research on the quality of streaming media services and various coarse-grained granularity scheduling methods in dynamic system environment, and design a data scheduling strategy and algorithm adaptive to the heterogeneity of network nodes. Then, we study the network measurement methods for streaming media, based on real-time streaming media Finally, the mechanism of providing service for streaming media system is analyzed, the state information and key data of the system are determined, and the availability of the system under various failures and attacks is analyzed. Streaming media transmission fault detection methods and system recovery methods.