5G与Wi-Fi在免授权频段的一种共存方案

he tremendous growth in mobile communication and personal communication data traffic poses a serious challenge to current mobile communication systems, mainly due to the scarcity of available spectrum. It is widely recognized by industry and academia that the communication technology of the unlicensed band is a potential solution for 5G mobile communication, which can alleviate the strain of spectrum resources and effectively increase the data transmission rate. Considering that the system deployed on the unlicensed band must coexist fairly with other systems in the band, this paper proposes a control channel assisted multi-channel access scheme. This solution can achieve fair coexistence of 5G and Wi-Fi on the unlicensed band. By dividing the channel into a number of mutually orthogonal subchannels and designing a multi-channel access mechanism and an interaction process, mutual interference on the subchannels can be greatly reduced. The simulation results show that compared with the LAA scheme, the proposed scheme throughput and delay performance are greatly improved, and the fairness of coexistence between 5G and Wi-Fi systems can be guaranteed.