Multi-user coordination technology

Wi-Fi 6 was the new name of IEEE 802.11ax by the Wi-Fi Alliance to facilitate the promotion of new Wi-Fi technology.Wi-Fi 6 technology focused on improving multi-user performance and efficiency in dense deployment scenario.Introducing OFDMA, UL MU-MIMO and other multi-user collaboration technologies, greatly increases system capacity and reduces transmission delay.The principles of OFDMA, MU-MIMO, MU-RTS/CTS technologies were described, the communication process in multi-user scenario was introduced in detail, and the UL and DL simultaneous user numbers of Wi-Fi 6 were analyzed in theory.Finally, the application potential of Wi-Fi 6 were discussed.