查看文章

Cellular networks (CNs) continue to evolve by implementing several technologies such as nonorthogonal multiple access and device-to-device communication, accommodating thereby the high data traffic demand. By leveraging these technologies, in this article, we propose a novel scheme to integrate public safety (PS) networks in CNs. This integration enhances the performance of PS users (PSUs) that rely on low-rate technologies. We formulate a mixed integer nonlinear programming problem for sum throughput maximization, to optimize the channel allocation and achieve the required rate of PSUs. This optimization takes into account power budget, users required rates, and successful interference cancellation constraints. Since the maximization problem is computationally challenging, we design a heuristic algorithm that selects the appropriate cellular users to share their resources with PS clusters. Then …