| 摘要: |
| 本文提出一种改进的MobiCast方案来实现移动IP组播通信,主要解决MobiCast方案中进行区域间切换时组播数据包丢失问题。与MobiCast方案相比,在区域外地代理(DomainForeignAgent,DFA)处引入一种缓存的机制。当移动节点发生区域间切换时,移动节点的旧区域外地代理采用隧道技术,将移动节点的信息和缓存的组播数据包发送给移动节点的新区域外地代理处,减少移动节点进行区域间切换时丢失的组播数据包。 |
| 关键词: 移动IP IP组播 区域间切换技术 |
| DOI：10.3969/j.issn.1001-893X. |
| 投稿时间：2004-09-10 |
| 基金项目:国家自然科学基金;北京科技大学校科研和教改项目 |
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| A Mobile IP Multicast Scheme Based on MobiCast |
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| Abstract: |
| This paper introduces an improved MobiCast scheme to realize mobile IP multicast, with the purpose of solving the multicast packet lost problem when mobile nodes handoff between domains. Comparing with the MobiCast, a buffer mechanism is introduced in the DFA (domain foreign agent). When a mobile node handoffs between domains, the old DFA sends the information of the mobile node and the duplicate multicast packet to the new DFA through a tunnel,which alleviates the multicast packet lost problem when mobile nodes handoff between domains. |
| Key words: Mobile IP,IP Multicast,Handoff between domains |
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