Review on Secure Device to Device Communications in LTE

Mobile data traffic volume is growing on a large-scale which creates a data traffic overload problem on current cellular networks. To facilitate these growing demands for mobile data traffic volume in next-generation cellular networks such as 5G, the concept of device-to-device (D2D) communication has been introduced. D2D communications have been shown to improve power efficiency, spectrum efficiency, throughput and delay by maximizing the system’s capability in cellular networks through enabling multiple devices to communicate with each other directly. Despite these benefits, D2D communication faces some open research challenges ahead, for instance, security, cooperative multi-hop D2D communications, transmission scheduling and power control and power efficiency. This paper presents a review on the possible threats and the existing security solutions in D2D communications.