Joint Time Allocation and User Scheduling in a Full-Duplex Aided Multi-user DEIN

Abstract

In order to address the energy shortage in communication networks, radio frequency (RF) signals are exploited for transferring energy to miniature devices, which yields wireless powered communication networks (WPCNs). A full-duplex aided hybrid-base-station (H-BS) is deployed in a WPCN for simultaneously transferring energy in the downlink and receiving data in the uplink, which may significantly increase the usage efficiency of the precious radio spectrum. User equipments (UEs) may deplete all the energy received from the H-BS for powering their own uplink transmissions. Therefore, in this full-duplex WPCN, a joint time allocation and UE scheduling algorithm is proposed for the sake of maximising the sum-uplink-throughput of multiple UEs by further considering UEs’ actual data uploading requirements. The numerical results demonstrate that the suboptimal solution is capable of achieving almost the same performance with its optimal counterpart, while our scheme outperforms other existing peers in terms of the sum-uplink-throughput.