Socially-aware gateway-based content sharing and backup

The amount of data that home users generate, store, and share with their friends via a multitude of devices has grown significantly in the past few years. In our paper, we assume that every household is equipped with a home gateway that stores and manages the data collected by the home users. To accelerate the content sharing and backup for such users, we propose an efficient backup scheme that hinges upon gateway interactions exploiting the users' social networking in- formation. We formulate this problem as a Budgeted Maximum Coverage (BMC) problem and we numerically compute the optimal content backup solution under a synthetic social network scenario. Then, we compare it with two different content placement strategies for gateways with various quota sizes, in a realistic synthetic social network.