基于D2D通信的动态缓存方案

Dynamic Content Caching Scheme based on D2D Communications

随着无线数据传输呈现出爆炸增长的态势,无线内容共享也面临着数据传输规模激增、资源短缺和通信环境多变等重大挑战。于是,基于D2D通信的动态缓存技术应运而生。在分析该技术在内容共享业务中的优势与挑战的基础上,分别根据调度模式、缓存模型、传输方式、优化方法和信息融合情况,对现有研究采用的缓存方案进行相应分类,并对各分类情况进行阐述和比较,便于在设计具体的缓存优化方案时选择方案所属类型,建立联合优化模型,从而更有针对性地解决缓存问题。

With the explosive growth of wireless data transmission, wireless content sharing faces major challenges such as the proliferation of data transmission, resource shortages and changing communication environments. Dynamic caching technology based on D2D （Device-to-Device） communication is proposed. Based on analysis of the advantages and challenges of the technology in the content sharing service, the caching schemes adopted by the existing methods are classified in accordance respectively with the scheduling mode, caching model, transmission mode, the optimization method and the information fusion. At the same time, various classifications are described and compared, thus being convenient to select the type of the scheme when designing a specific cache optimization scheme, and then establish a joint optimization model and solve the cache problem more specifically.