In order to preserve the privacy of the users demands from other users, in this paper we formulate a novel information theoretic Device-to-Device (D2D) private caching model by adding a trusted server. In the delivery phase, the trusted server collects the users demands and sends a query to each user, who then broadcasts packets according to this query. Two D2D private caching schemes (uncoded and coded) are proposed in this paper, which are shown to be order optimal.

翻译：为了保护用户对其他用户的要求的隐私,本文通过添加一个信任的服务器,来开发一个新的信息理论设备到设计器(D2D)私人缓存模型。在交付阶段,受信任的服务器收集用户的要求,并发送查询给每个用户,然后由用户根据查询广播数据包。本文件提出了两个D2D私人缓存计划(未编码和编码),这些计划被显示为最优化的顺序。