An access point, AP , for full duplex, FD, communications, the AP comprising: a memory; an interface for wireless communication with at least one first receiving station and at least one second transmitting station; and a processing device configured to execute instructions stored in the memory to cause the AP to: send information about an uplink, UL, transmission opportunity, TXOP, the information about the TXOP including an indication of the TXOP; send a downlink, DL, transmission to the at least one first receiving station; during the TXOP, receive an UL transmission from the at least one second transmitting station, the UL transmission at least partially overlapping in time with the DL transmission; and send acknowledgement of the UL transmission to the at least one second transmitting station and receive acknowledgement of the DL transmission from the at least one first receiving station, at a same synchronized time, wherein the processing device is further configured to execute instructions to cause the AP to: at a later one of end of the UL transmission and end of the DL transmission, send a block acknowledgement request, BAR, frame; wherein the synchronized time is synchronized according to the BAR frame. a memory; an interface for wireless communication with at least one first receiving station and at least one second transmitting station; and a processing device configured to execute instructions stored in the memory to cause the AP to: send information about an uplink, UL, transmission opportunity, TXOP, the information about the TXOP including an indication of the TXOP; send a downlink, DL, transmission to the at least one first receiving station; during the TXOP, receive an UL transmission from the at least one second transmitting station, the UL transmission at least partially overlapping in time with the DL transmission; and send acknowledgement of the UL transmission to the at least one second transmitting station and receive acknowledgement of the DL transmission from the at least one first receiving station, at a same synchronized time, send information about an uplink, UL, transmission opportunity, TXOP, the information about the TXOP including an indication of the TXOP; send a downlink, DL, transmission to the at least one first receiving station; during the TXOP, receive an UL transmission from the at least one second transmitting station, the UL transmission at least partially overlapping in time with the DL transmission; and send acknowledgement of the UL transmission to the at least one second transmitting station and receive acknowledgement of the DL transmission from the at least one first receiving station, at a same synchronized time, wherein the processing device is further configured to execute instructions to cause the AP to: at a later one of end of the UL transmission and end of the DL transmission, send a block acknowledgement request, BAR, frame; wherein the synchronized time is synchronized according to the BAR frame. at a later one of end of the UL transmission and end of the DL transmission, send a block acknowledgement request, BAR, frame; wherein the synchronized time is synchronized according to the BAR frame. <EOS>