• 中国计算机学会会刊
  • 中国科技核心期刊
  • 中文核心期刊

J4 ›› 2013, Vol. 35 ›› Issue (12): 39-44.

• 论文 • 上一篇    下一篇

移动应用层组播中基于父节点备份机制的快速重定向策略研究

崔建群1,叶咏佳1,高宽1,范静2,吴黎兵2   

  1. (1.华中师范大学计算机学院,湖北 武汉 430079;2.武汉大学计算机学院,湖北 武汉 430072)
  • 收稿日期:2013-06-12 修回日期:2013-09-10 出版日期:2013-12-25 发布日期:2013-12-25
  • 基金资助:

    国家自然科学基金面上项目(61370108,61170017,61070010,61272112);华中师范大学中央高校

    基本科研业务费创新探索项目(120002040616)

A quick redirection strategy based on parent node
backup mechanism in mobile ALM environment             

 CUI Jianqun1,YE Yongjia1,GAO Kuan1,FAN  Jing2,WU Libing2   

  1. (1.School of Computer Science,Central China Normal University,Wuhan 430079;
    2.School of Computer Science,Wuhan University,Wuhan 430072,China)
  • Received:2013-06-12 Revised:2013-09-10 Online:2013-12-25 Published:2013-12-25

摘要:

针对移动环境下应用层组播节点的高度动态性问题,提出了一种基于设施的移动环境下组播系统故

障恢复策略。该策略利用所提出的主动故障恢复方案以及备份父节点重定向算法,达到快速重定向的目的

。还提出利用组播树的相似度来衡量重定向算法对组播拓扑变化的影响,从而判断重定向策略的好坏。实

验仿真结果表明,所提出的快速重定向策略具有时延低的优势,并且重定向后对组播拓扑变化影响较小。

关键词: 移动应用层组播, 故障恢复, 重加入时延, 组播树相似度

Abstract:

To address solving

the high dynamics problem of mobile Application Layer Multicast (ALM) nodes, a multicast

system’s failure recovery strategy in the mobile environment is proposed. This strategy can

achieve the goal of quick redirection by using active failure recovery method and the

proposed redirection algorithm based on parent node backup. Besides, we propose to use the

similarity of multicast tree to measure the impact of the redirection algorithm on the

change of multicast system’s topology, thus evaluating the quick redirection strategy.

Simulation experiment is given to show that the proposed quick redirection strategy has low

delay and small influence on the multicast system's topology..

Key words: mobile ALM;fault recovery;rejoin delay;multicast tree similarity