Social-Aware D2D Caching Content Deployment Strategy over Edge Computing Wireless Networks

Caching the popular files in mobile terminal equipments and transferring those files via Device-to-Device (D2D) communication technology can offload the traffic from the Base Station(BS) over edge computing wierless network. The user equipments(UE) are mobile and the D2D communication links may drop any instant. In addition, UEs are carried by people with social attributes. Considering those information about mobile terminals when we study the D2D caching content deployment strategy can improve the caching efficiency. In order to reduce the probability of requesting files from BS, we design an efficient social-aware caching content deployment strategy, which includes the community discovery mechanism, the caching nodes selection algorithm and the file caching probability determination algorithm. Simulation experiments are provided to prove that our D2D caching content deployment strategy can improve the traffic offload rate in edge computing wireless networks.