| 一种基于二分图的移动网络预缓存机制 |
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| 引用本文： | 魏亮,谢俊峰,谢人超,黄韬,刘韵洁.一种基于二分图的移动网络预缓存机制[J].北京邮电大学学报,2017,40(6):19-23,36. |
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| 作者姓名： | 魏亮 谢俊峰 谢人超 黄韬 刘韵洁 |
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| 作者单位： | 北京邮电大学 网络与交换技术国家重点实验室,北京100876;江苏省未来网络创新研究院, 南京211111;北京邮电大学 网络与交换技术国家重点实验室,北京,100876 |
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| 基金项目： | 国家自然科学基金项目，国家高技术研究发展计划(863计划)项目，北京市科技新星计划项目 |
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| 摘 要： | 为了解决移动网络中高效部署缓存的问题,提出了一种基于二分图的内容预缓存机制,在选择内容预缓存的节点时,不仅要考虑该节点上的内容热度,还要考虑该节点与其他节点之间的链路状态,用以选择对内容热度最高、网络状态最好的节点来预缓存内容,从而提高内容分发效率.仿真结果表明,该方法可以有效地提升缓存空间的利用效率,降低内容传输时延,增强用户体验.
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| 关 键 词： | 移动网络 链路状态 内容预缓存 内容分发 |
A Content Pre-Caching Mechanism Based on Bipartite Graph in Mobile Cellular Network |
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| Abstract: | In order to solve the problem of efficient deployment caching in mobile networks, a content caching mechanism based on bipartite graph was proposed. When selecting the content caching nodes, it is necessary to consider not only the content' s interest degree in each node, but also the link states be-tween nodes. Based on this scheme, those nodes which are most interested in the content and have the best network status will be selected to pre-cache the content, thereby improving the content distribution efficiency and reducing the content transmission delay. Simulation results are illustrated to show that the proposed scheme can improve the utilization efficiency of cache space, reduce the content transmission delay and enhance users' experience. |
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| Keywords: | mobile cellular network link status content pre-caching content distribution |
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