徐昌彪*， 王华
（ 重庆邮电大学通信与信息工程学院； ）
摘要： CCN（Content-centric Networking）是以内容名字为寻址依据的新型网络架构。然而有关CCN移动性的研究面临着巨大的挑战。路由信息是内容名的一部分，当内容提供者发生移动时，网络中的路由信息也需要更新，然而更新全网中的路由信息的代价是相当大的。为此，提出了PPCCN（Proactive-pushing CCN），该方案将内容的流行度和周围节点的情况综合考虑，当内容源发生移动时，将内容资源中存储的内容推送至周围的邻居节点，仿真结果表明，该方案减少了数据包的重传次数，降低了内容下载的时间，提高了包的交付率。
关键词： 信息中心网络；未来网络；内容提供者；内容流行度；邻居节点
Xu Changbiao*， Wang Hua
（ School of Communication and Information Engineering, Chongqing University of Posts and Telecommunications； ）
Abstract： CCN(Content-centric Networking) is a new style network that enables users to retrieve content using content's name. However there are great challenges in the mobility. The routing information is part of the content name, when the content provider is moves, it is necessary to update the routers' routing information. However it needs significant costs to update all the routers routing information. In this paper, we propose PPCCN(Proactive-pushing CCN), considering the content's popularity and the environment of neighbor nodes, while the content provider is moving, contents belong to the provider are pushing to the neighbor nodes. The simulation results indicate that PPCCN is effective in terms of shorter numbers of retransmitted Interest packet, lower download times and higher delivery ratio during mobility.
Keywords： Content-centric Networking; future network; content provider; popularity; neighbor nodes
作者简介： 徐昌彪(1972-)，男，教授，主要研究方向：移动网络、未来网络
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