以内容为中心的移动自组织社交网络缓存技术研究

项目名称： 以内容为中心的移动自组织社交网络缓存技术研究

项目编号： No.61502046

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 自动化技术、计算机技术

项目作者： 张天魁

作者单位： 北京邮电大学

项目金额： 20万元

中文摘要： 移动自组织社交网络（MASN）无需基础设施即可进行内容分发，但MASN进行多媒体热点内容分发时面临两方面难题：IP体系结构下内容分发效率低，无线自组织网络承载能力有限。内容中心网络（CCN）实现了面向内容共享的通信架构，可以有效地支持内容分发。本课题将CCN引入MASN解决MASN内容分发面临的难题，重点开展以内容为中心的移动自组织社交网络缓存技术研究，从移动社交内容分发特性的角度进行CCN缓存理论分析与性能优化。主要研究内容包括：1）构建CCN结合MASN的理论模型；2）提出基于用户偏好的缓存位置优化策略；3）实现无线节点空时协作缓存机制。本课题研究有助于促进CCN与MASN的融合，并有效地提高MASN内容分发效率、降低无线网络负载，从而解决MASN内容分发面临的难题。研究成果填补应用于MASN的CCN缓存技术研究空白，为MASN内容分发提供新的解决方案。

中文关键词： 内容缓存；内容中心网络；移动社交网络；协作缓存

英文摘要： Mobile ad hoc Social Networks (MASN) is able to distribute contents without infrastructure. However, when transmitting multi-media popular contents, MASN has to confront with two problems: the low content dissemination efficiency due to IP architecture and the limited network traffic load capacity of wireless ad hoc networks. Content Centric Networks (CCN) makes a novel communication architecture facing to content sharing, which could support high efficient content disseminations. In this research, CCN is introduced to MASN to solve its problem of content disseminations. The major of our research focuses on the study of cache techniques in Content Centric Mobile ad hoc Social Networks, aiming for CCN cache theoretical analysis and performance optimization from mobile social content delivery point of view. This research will cover three aspects as follows. 1) The theoretical model of MASN combined with CCN architecture will be proposed; 2) an optimized CCN caching placement strategy considering both user preference and friendship will be introduced; 3) a time-space cooperative caching strategy of wireless node will be presented. Our research will promote the combination of CCN and MASN, especially beneficial for enhancing the content dissemination efficiency as well as releasing the wireless network traffic load, and ultimately solve the problems of content delivery in MASN. The research achievements are expected to fill the gap of CCN caching techniques applied to MASN. Moreover, they are able to afford novel solutions to content disseminations in MASN.

英文关键词： Content Caching;Content Centric Networks;Mobile Social Networks;cooperative caching