Spectrum Efficient Coexistence Between 5G NR Unlicensed and WiGig in 60 GHz Band

60 GHz band (57–71 GHz) offers an exciting opportunity for sharing spectrum between NR-based access to unlicensed spectrum (NR-U) and wireless gigabit (WiGig), also termed as IEEE 802.11ad/ay. However, efficient coexistence is particularly challenging because the operating in the 60 GHz is usually deployed with a dense small-cell setting for indoor application and it is hard to avoid interference. In this study, we propose an efficient spectrum coexistence mechanism for NR-U and WiGig to improve spectrum availability and ensure fair coexistence. We also analyze the effect of duty cycle time fraction on NR-U and WiGig networks. Furthermore, the proposed algorithm maximizes the overall throughput of the NR-U network by joint spectrum resource and transmission power allocation. Simulation results show that our proposed scheme achieves significant spectrum efficiency improvement compared to existing receiver-assisted Listen-Before-Talk (LBT) mechanism.