earticle

영어

Recently, mobile internet traffic has rapidly increased as the huge increase of the mobile devices and smart phone. If mobile internet traffic increases steadily, the resource for cellular network is not enough for the demand of huge internet traffic. Hence, D2D (Device-to-Device) technology is highlighted in order to resolve the lack of cellular resources and the demand of internet traffic. D2D communications use the same resource, which means that it shares the resource of cellular networks. But, D2D technology has some problems such as the mutual interference with celluar users by sharing same resource with cellular network and increased complexity to search the optimum resource for D2D links with minimizing the mutual interference with cellular users using same resources. In this paper, we proposed a efficient resource allocation for D2D links by using the location information for Cellular and D2D users, respectively. Proposed scheme utilizes location information and SINR (Signal-to-Interference-plus-Noise Ratio) information in order to increase the efficiency of resource and also reduce computational complexity. Of the proposed scheme first selects the prospective cellular resources based on the location information and then finally D2D resource by SINR comparison from the group of selected resources in previous procedure. Simulation results show that the proposed scheme attains the higher throughput over the scheme with only location information and we also compare the D2D and cellular throughput of the proposed scheme according to the rate of the group selection for the next SINR comparison in order to determine the optimum resource for D2D communication.