Matching-based socially-aware data caching for D2D communications

Device-to-Device (D2D) caching shows a great potential to provide high data rate and low latency multimedia services and to reduce the high demand for precious radio resources, such as frequency, time and backhaul. Reaping the benefits of D2D caching hinges on solving a myriad of challenges such as when, where and what to cache contents subject to various practical constraints. Motivated by this, in this paper, we propose a novel socially-aware data caching scheme for D2D overlaid wireless networks by taking physical layer relations and social ties among users into consideration. In particular, with the objective to maximize overall throughput of the system, we advocate matching-based scheme to answer the question of how to form the D2D pairs, which devices can cache and what to cache. The simulation results validate the advantages of the proposed scheme over the others.