摘要
在移动IPv6中,当MN(移动节点)位于外地网络时,发向MN的数据报文需要首先路由至HA(家乡代理),然后再转发至MN的当前位置。为了解决上述方式路由效率较低的问题,提出了一种在层次移动IPv6环境中的动态HA机制,并且给出了基于这种机制的全IP无线网络结构。在本方案中,通过利用MIPv6的本身特性,并结合一种安全的动态DNS(域名服务)更新机制,实现MN家乡地址和HA的动态配置,有利于简化网络管理,提高路由效率以及实现HA负载均衡等。另外,通过AAA(认证、授权和计费)上下文预转移机制,可以有效减小域间切换时延。
In Mobile IPv6, when a mobile node （MN） is locate in ecdemic network, it is inefficient that all data transfer to MN is tunneled by remote home agent （HA） to MN＇s current location. In this paper, an ALL-IP wireless networks infrastructure based on dynamic home agent in Hierarchy Mobile IPv6 （HMIPv6） environments is proposed to address the problem. In our proposal, we achieve home address and HA dynamic configure by the peculiarity of MIPv6 and a secure dynamic DNS update. It is propitions to predigest the network manage, improve the transfer efficiency and achieve the HA load equilibrium. In addition, we propose a proactive Authentication, Authorization, Accounting （AAA） context transfer scheme to reduce inter-domain handoff delay.
出处
《电子工程师》
2008年第5期68-71,80,共5页
Electronic Engineer
