Traffic offloading based on content sharing in D2D for Smart Grid.

The Edge-Device architecture is an excellent companion of mobile communication systems, to alleviate load of IoT (internet of things) and to bring user improved experience. We consider a content sharing network (CSN) where smart devices functioned as contributory offloading-devices (CODs) can perform content sharing on demand via Edge-Device links in order to offload the cellular traffic. In this paper we study the problem of maximizing traffic offloading via content sharing among smart devices, by applying a contribution-based incentive mechanism, and by selectively caching popular contents locally. Specifically, the incentive mechanism formulated as a utility maximization problem can converge to Nash equilibrium while selective caching scheme formulated as a 0-1 Knapsack problem can improve performance of CSN. Our simulation results identify the important characteristics of proposed policies in the CSN.