基于下一代网络体系架构的移动社交内容分发关键技术研究

With the rapid development of mobile communication technologies, new features sprung up, such a huge quantity of content, diversified services, and users’ diverse needs, with a result that the content distribution becomes quite weak in the reality and reliability. Different from the traditional methods based on the geographic information, this application presents the next generation networks to address the problems for content distribution based on the content centric network structure. Firstly, content distribution mathematical model is designed in the mobile social network based on the content and provides the theoretical foundation. Secondly, with the game theory, operations research and other mathematical tools, this application studies the cache strategy based on the interests, the cooperation strategy within the nodes based on the non cooperation game, and data communication strategy based on the users' demand characteristics, respectively. The specific objectives and results are shown as follows: considering the new features in the current networks and the rational allocation of the network resources, the proposal increases the efficiency of transmission, reduces the delay, improves the performance of the network systems and the user experience. Moreover, the new theory presented in the application establishes the theoretical foundation for the distribution strategy and application in the next generation networks based on the content.

随着移动通信技术的飞速发展, 移动社交网络呈现出数据海量化、内容共享化和用户需求多样化等新特征，使得传统的网络结构无法满足用户对内容分发实时性和可靠性的需求。为了克服上述问题，本项目基于不依赖传统地理信息的下一代网络架构，研究以内容为中心的移动社交网络内容分发的关键技术。首先，建立网络内容分发模型，为内容分发策略的研究奠定基础。其次,利用博弈论、运筹学、优化算法等数学工具，分别研究基于用户兴趣的内容缓存策略、基于非合作博弈的节点协作策略、基于用户需求特性的内容传播策略。通过充分挖掘网络特征、合理分配网络资源，以达到提高数据传输效率、降低用户访问时延、提升网络性能和用户体验的目的。本项目的开展可为基于下一代网络架构的移动社交网络的研究和应用提供理论指导与技术支撑。

由于虚拟现实交互化、数据海量化、内容共享化和用户需求多样化等新特征，如何满足用户对内容分发实时性和可靠性的需求成为了新的挑战。本项目摆脱传统基于IP地址的网络架构，展开以内容为中心的移动社交网络内容分发的关键技术。首先，建立内容中心移动社交网络的内容分发模型，为支持多样化用户需求的内容分发策略确立架构。其次,研究基于用户兴趣和网络状态的内容缓存策略，提高节点有限存储空间的缓存效率。再次，研究基于非合作博弈的网络节点协作策略，改善网络内容传输和共享的性能，并通过多场景应用，实现安全高效内容传输、降低用户访问时延、提升网络性能和用户体验的目的，可为基于下一代网络架构的移动社交网络的研究和应用提供了理论指导与技术支撑。

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