Data request task scheduling is one of the important issues having to be considered when designing the P2P media streaming system. Aiming at the problem of unbalanced distribution of the requests received by each peer in mesh topology structure, this paper presents an algorithm of data request task migration algorithm based on bandwidth and link delay of neighbour peers. Comparing with the algorithm not using request task migration, the experiment result shows that the proposed algorithm improves the system performance with higher average quality of media playback and better upload bandwidth utilisation.%数据请求任务调度是P2P流媒体系统设计时需要考虑的重要问题之一.针对网状拓扑结构中每个节点接收到的请求分布不均问题,提出一种基于带宽和链路延迟的数据请求任务转移算法.实验结果表明,相比于未采用数据请求任务转移的算法,所提算法提高了平均播放质量和上行带宽利用率,从而改善了系统的性能.
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