METHODS OF TRIGGERING SIMULTANEOUS MULTI-USER UPLINK AND DOWNLINK OFDMA TRANSMISSIONS FOR FULL- DUPLEX COMMUNICATIONS

摘要

The 802.11ax Trigger Frame conveys information for solicited MU UL OFDM(A) transmission information. A full-duplex-capable AP can initiate another DL frame transmission(s) during the UL transmission. However, non-UL-solicited STAs may enter a low-power sleep state right after a Trigger Frame reception, and thus cannot receive the full-duplex DL transmission from the AP. Therefore, to enable OFDMA-based full-duplex communication, the AP needs to explicitly announce both scheduled UL and DL transmission(s) in the Trigger Frame.