摘要： 在分析用户移动模式的基础上,提出一种基于用户移动模式的自适应移动组播算法。移动主机根据移动模式和当前移动状态自适应地选择双向隧道机制或者远程加入机制完成组播切换。该算法的优点是,当移动速率较小时,以较小的组播树重构代价实现组播数据的优化传输,而移动速率较大时,可以避免频繁的组播切换,减小组播树重构代价。

关键词: 组播, 移动IP, 移动组播, 移动模式

Abstract: After analyzing the user mobility pattern,an adaptive mobile multicast algorithm based on the mobility pattern is proposed.The mobile host adaptively chooses bi-direction tunneling or remote subscription to perform the multicast handoff according to its mobility pattern.When the movement is low,the proposed algorithm optimizes the multicast data transmission with little cost of tree reconstruction;when the movement is high,it avoids the frequent multicast handoff so as to reduce the tree reconstruction cost.

中图分类号: 

• TN929.5