北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2004, Vol. 27 ›› Issue (3): 78-82.

• 论文 • 上一篇    下一篇

Mobile IP中组播技术的实现

叶敏华, 刘 雨, 张惠民   

  1. 北京邮电大学信息工程学院, 北京100876
  • 收稿日期:2003-04-01 出版日期:2004-03-28
  • 作者简介: 叶敏华(1976—), 男, 博士生, E-mail: mhye76@yahoo.com.cn.
    张惠民(1940—), 男, 教授, 博士生导师, E-mail: hmzhang@bupt.edu.cn.
  • 基金资助:
    国家自然科学基金项目(60072036)

The Implementation of Multicast in Mobile IP

YE Min-hua, LIU Yu, ZHANG Hui-min   

  1. Information Engineering School, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • Received:2003-04-01 Online:2004-03-28

摘要: 提出了一种新的在Mobile IP中实现组播的方案,它引入了移动组播网关的概念,并用它来管理Mobile IP中的组播。整个过程分为接收组播包和转发组播包2个阶段:在接收阶段,移动组播网关可以通过将自身加入组播树或由隧道从某一个移动主机的家乡网络来获得组播包,完全消除了“隧道会聚”问题;在转发阶段,移动组播网关采用建立局部的组播树或者是通过隧道的方式向移动主机转发组播包,保证了路由效率和可靠通信。最后对各种方案进行了建模和性能分析,数值分析表明,新的方案具有良好的性能。

关键词: 组播, 移动IP, 移动组播网关

Abstract: An implementa tion of modified mul ticast in Mobi le IP was presented, in which, the concept o f mobi le multicast gatew ay ( MMG) w as int roduced. MM G was used to ma nage mul tica st in Mobi le IP. There existed two stag es fo r receiving and fo rw arding respectively. The multicast packet s w ere receiv ed by adding MM Git self on to the mul ticast di st ribution tree, or by deliv ering v ia tunnel f rom the home netwo rk of mobi le ho st ( M H) , and the “ tunnel conv ergence” problem was eliminated tho ro ug hly in the meantime. Af ter w hich, acco rding to di fferent situatio ns, multicast packets w ere forw arded f rom MMG to MH wi th set ting up mul ticast dist ributio n t ree in it s region, o r f rom the tunnel to M H di rect ly to gua rantee th e ro uting ef ficiency and multicast reliability. A netwo rk model was int roduced, and the performance o f all schemes w as analy zed. The numerical resul ts show tha t the new pro po sal presents g ood perfo rmance.

Key words: multicast, mobile Internet protocol, mobile multicast gateway

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