中文摘要：

In cellular networks, the proximity devices may share files directly without going through the e NBs, which is called Device-to-Device communications(D2D). It has been considered as a potential technological component for the next generation of communication. In this paper, we investigate a novel framework to distribute video files from some other proximity devices through users’ media cloud assisted D2 D communication. The main contributions of this work lie in: 1) Providing an efficient algorithm Media Cloud Cluster Selecting Scheme(MCCSS) to achieve the reasonable cluster; 2) Distributing the optimum updating files to the cluster heads, in order to minimize the expected D2 D communication transmission hop for files; 3) Proposing a minimum the hop method, which can ensure the user obtain required file as soon as possible. Extensive simulation results have demonstrated the efficiency of the proposed scheme.

英文摘要：

In cellular networks, the proximity devices may share files directly without going through the eNBs, which is called Device-to-De- vice communications （D2D）. It has been con- sidered as a potential technological component for the next generation of communication. In this paper, we investigate a novel framework to distribute video files from some other proximity devices through users＇ media cloud assisted D2D communication. The main contributions of this work lie in： 1） Providing an efficient algorithm Media Cloud Cluster Selecting Scheme （MCCSS） to achieve the reasonable cluster; 2） Distributing the optimum updating files to the cluster heads, in order to minimize the expected D2D communi- cation transmission hop for files; 3） Proposing a minimum the hop method, which can ensure the user obtain required file as soon as possible. Extensive simulation results have demonstrated the efficiency of the proposed scheme.