基于Internet实时视频流的流媒体系统构造

本文针对流媒体应用的实时性要求和当前Internet带宽不足的矛盾，利用流媒体数据中重要性分布的非均匀，从带宽预分配、流调度、丢包处理、错误处理等多方面进行非均匀的QoS控制策略，保证重要数据的实时性。为了预防拥塞，本文在流控制中使用了早期警戒的方式，在拥塞真正形成之前就开始减少发送速率，以较小代价避免拥塞。

The streaming media's system structure according to internet's real time stream

Regarding to the cases of the application to the streaming media on the demand of the real time quality and the contradiction of the inadequate bandwidth of the present Internet, the article analyzes the unbalance QoS controlling strategies from the viewpoint of the predistribution of bandwidth, the streaming dispatching, the handling of the data losing, and the processing mistakes and so forth, taking advantages of the unbalance on the distribution importance of the streaming media data, to guarantee the real time of the important data. In order to take predations against the congestion, the article employs the early warning in the streaming control, where it began to decrease the transmission rate before the conforming of the real congestion and avoid the congestion at the less cost, rather than to ease and eliminate the congestion at the higher cost after taking place the real congestion.