一种基于P2P的流媒体数据调度算法

针对现有的采用拉式策略的算法在进行调度时数据块不能及时到达的情况，提出了一种自适应的数据调度算法。该算法可以根据节点间数据的传输速率以及P2P网络节点的动态性自动调整对数据服务节点的选择，并可以最小化在播放截止时间之前不能到达的数据块的数量。实验结果表明，新的算法可以一定程度缩短每个调度周期的数据到达延迟。

Data scheduling algorithm for media streaming based on P2P

In order to solve the problem that the data block can not arrive in time in the existing algorithm using pull method,an adaptive data scheduling algorithm is proposed for P2P media streaming. This algorithm can not only choose the server peer automatically according to the transmitting rate and the dynamic feature ofP2P networks,but also minimize the quantity of the data block that can not arrive before the playing deadline. Experimental results show that the new algorithm can shorten the data arrival latency of every scheduling period to a certain degree.