中文摘要：

该文提出以内容为中心的网络（CCN）中一种基于代理的主动缓存方案。通过代理服务器主动请求与缓存移动切换过程中用户未能获取的内容，解决CCN网络中用户移动性支持问题。与现有CCN网络用户移动性支持方案相比，该文提出的基于代理的主动缓存方案，用户获取内容的时间成本与代理服务器获取内容的时间成本较低，用户的移动切换时延与内容获取的平均时间较短。该方案可有效利用CCN网络共享的内容资源，减缓用户移动对实时业务的不良影响。

英文摘要：

This paper proposes a proxy-based proactive caching approach for enhancing consumer mobility in Content Centric Networks （CCN）. The approach requests proactively and caches the contents that a user does not receive but is requested before a handover process. Compared with other approaches for consumer mobility, the analytical and simulation results indicate that the proposed approach has shorter handover delay and less average content retrieval time. In addition, the proposed approach costs less in retrieving content for mobile users. This approach can also support efficient content sharing in mobile CCN environments and alleviate negative effects of consumer mobility on real-time services.