Time Hopping for Device-To-Device Communication in LTE Cellular System

In this paper, we analyze the challenges of the interference environment in a hybrid network that consists of the device-to-device (D2D) communication based ad-hoc connections and conventional cellular connections. Accordingly, time hopping (TH) based radio resource allocation schemes aiming to improve the robustness of the hybrid network are proposed. The performance improvement even with the simple random TH scheme is considerable, which is validated via extensive simulations. In addition, the simulation results also give some hints on the optimization of the practical TH operation in a hybrid network.