Research on the Content Sharing System for Mobile Edge Caching Networks: a Hierarchical Architecture

We consider the issue of effective content management in mobile edge caching networks due to the characters of mobile user devices' mobility and heterogeneity. We propose a hierarchical framework for content sharing application in mobile edge caching networks, which mainly includes physical layer and content sharing application layer. The function of the physical layer is to manage mobile users and their content management functions. This layer adopts a clustering method, and the small base stations (stationary edge nodes) distributed in the geographical area are used as cluster heads to manage the mobile users in the area under its jurisdiction, and manage content resources through distributed hash table; the main function of the application layer is to manage the content sharing process between mobile users. To solve the unstable content transmission performance caused by frequent movement of user nodes between regions, we propose a publication-subscription driven content discovery and control scheme, an incentive mechanism for content sharing and a dynamic content provider selection algorithm. Experimental results verify the effectiveness of the proposed hierarchical architecture.