| 新型P2P流媒体系统模型 |
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| 引用本文： | 张代远,江丽敏.新型P2P流媒体系统模型[J].北京邮电大学学报,2009,32(4):68-72. |
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| 作者姓名： | 张代远 江丽敏 |
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| 作者单位： | 南京邮电大学,计算机学院,南京,210003;南京邮电大学,计算机技术研究所,南京,210003;南京邮电大学,计算机学院,南京,210003 |
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| 摘 要： | 为了改善数据传输性能，提出了一种新型P2P流媒体系统模型(NSMP2PS)，描述了NSMP2PS的体系结构和设计原理. 通过引入网络编码的机制，提高了系统的数据存储转发能力. 采用效率较好的节点加入算法和节点失效管理策略，有效地解决了组播树负载不平衡的问题；此外，该模型的节点自优化过程能保证组播树结构的优化和播放的连续性. 引入了激励机制，激励更多的自私节点转发和共享资源、数据，使得数据质量和直播系统的总体性能也有所改善.
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| 关 键 词： | P2P 流媒体直播 编码 应用层组播 激励机制 |
A System Model for P2P Stream |
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| ZHANG Dai-yuan,JIANG Li-min.A System Model for P2P Stream[J].Journal of Beijing University of Posts and Telecommunications,2009,32(4):68-72. |
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| Authors: | ZHANG Dai-yuan JIANG Li-min |
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| Affiliation: | 1.College of Computer, Nanjing University of Posts and Telecommunications;2.Institute of Computer Technology, Nanjing University of Posts and Telecommunications |
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| Abstract: | To improve performance of data transmission, a new system model for peer to peer stream (NSMP2PS) is built. The architecture and design principles for NSMP2PS are described. Introducing the network coding mechanism, the store and forward capability of data is improved. Using the management strategy for better nodes and failure nodes algorithms, the NSMP2PS can be used to avoid the problem of unbalanced load for multicast tree. On the other hand, the optimal multicast tree structure and the continuity of players can be guaranteed by its self optimizing process nodes. The incentive mechanism is introduced to encourage more selfish nodes transmitting and sharing resources and data, therefore, the data quality and the overall performance of live system are also improved. 68-72 |
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| Keywords: | P2P |
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