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目前P2P流媒体技术已经成为Internet上大规模流媒体应用的最流行的实现方案,但其服务质量会受到搭便车问题的影响。本文提出了一种基于内容差分服务的激励机制,该机制根据节点的贡献值和节目的流行度两个因素来计算节点的信誉,节目列表服务器按照节点的信誉值返回相应的节目列表,这样可以实现内容差分服务以避免搭便车问题。仿真结果表明,该激励机制可以有效提高视频播放质量。
At present, P2P streaming media technology has become the most popular solution for mass media streaming applications on the Internet, but its service quality will be affected by the free-riding problem. In this paper, an Incentive Mechanism based on Content Differentiated Services is proposed, which calculates the reputation of a node based on its contribution and the popularity of the program. The program listing server returns the corresponding program list according to the reputation of the node, Differentiate content to avoid free riding. Simulation results show that the incentive mechanism can effectively improve the video playback quality.