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中文摘要：
移动IPv6中，移动节点（MN）在不同子网间移动时，既不中断与通信对端（CN）的通信．也不用改变其本身的IP地址。但是当MN与其家乡代理（HA）之间相距较远时．移动IPv6切换时延较大，对于实时性要求较高的业务无法适用。本文分析比较了目前移动IPv6常用的切换时延优化方法．提出了一种自适应快速层次移动IPv6切换时延优化方法，减小了移动IPv6切换时延，提高了网络的性能。
英文摘要：
With mobile IPv6,a mobile node can roam in different networks neither disconnecting the communication with correspondent nodes, nor changing its IP address, but the handover delay is obviously increased when a mobile node is far away from its home agent. The handover delay will directly affect the performance of a network, especially for a real-time traffic. In this paper, the existing methods to decrease handover delay are analyzed and contrasted for mobile IPv6, and a new adaptive optimization scheme, which integrates fast mobile IPv6 with hierarchical mobile IPv6, is proposed. This scheme can decrease the handover delay and improve the performance of mobile IPv6 network.
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