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计算机工程 ›› 2011, Vol. 37 ›› Issue (2): 105-107. doi: 10.3969/j.issn.1000-3428.2011.02.036

• 网络与通信 • 上一篇    下一篇

自底向上的应用层组播树重构算法

邓正伟,李 锋   

  1. (东华大学计算机科学技术学院,上海 200051)
  • 出版日期:2011-01-20 发布日期:2011-01-25
  • 作者简介:邓正伟(1986-),男,硕士研究生,主研方向:多媒体传输,计算机网络实时性;李 锋,副教授、博士
  • 基金资助:
    上海市科委仪器类基金资助重点项目“仪器网络化管理和远程控制系统”(09142200700)

Bottom-Up Application Layer Multicast Tree Reconstruction Algorithm

DENG Zheng-wei, LI Feng   

  1. (College of Computer Science and Technology, Donghua University, Shanghai 200051, China)
  • Online:2011-01-20 Published:2011-01-25

摘要: 分析传统应用层组播树重构算法的不足,结合前向式重构技术,提出一种自底向上的应用层组播树重构算法。采用自底向上的方法将备用父节点的本地选择策略和全局选择策略进行有机结合。仿真结果表明,该算法在组播树的恢复时延、重构树的质量、树重建的控制开销方面都有一定的改进。

关键词: 自底向上, 应用层组播, 前向式, 树重构

Abstract: Based on the analysis of the traditional application layer multicast tree reconstruction algorithm, combined with proactive reconstruction technique, a bottom-up application layer multicast tree reconstruction algorithm is proposed. The algorithm employs a bottom-up strategy, which combines both local and global-selection strategies for backup parent node choice. Simulation results show that the algorithm has improvement in the respect of recovery delay of multicast tree, the quality of the reconstructed tree and the control overhead of tree reconstruction.

Key words: bottom-up, application layer multicast, proactive, tree reconstruction

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