A resource allocation method for D2D and small cellular users in HetNet

In this paper, device-to-device (D2D) communication and small cell technology are introduced into cellular networks to form three layers of heterogeneous network (HetNet). The resource allocation problem of D2D users and small cellular users (SCUEs) is studied in this network, and a resource allocation method under satisfying the communication quality of macro cellular users, D2D users and SCUEs is proposed. Firstly, in order to reduce the computational complexity, regional restrictions on macro base station and users are conducted; Then, in order to improve the system throughput, a resource allocation method based on interference control is proposed. The simulation results show that the proposed method can effectively reduce the computational complexity and improve the overall system throughput.