A wireless communication terminal that wirelessly communicates, the wireless communication terminal comprising: a transceiver for transmitting and receiving a wireless signal; and a processor for processing the wireless signal, wherein the processor is configured to: perform a transmission based on a transmission opportunity, TXOP, limit which is a maximum value of a TXOP, which is a time interval in which a wireless communication terminal has a right to initiate a frame exchange sequence in a wireless medium, transmit a Null Data Packet Announcement, NDPA, frame informing that a sounding protocol sequence is initiated, and transmit a Null Data Packet, NDP, frame after a short inter-frame space, SIFS from when the NDPA frame is transmitted, characterized in that the processor is further configured to: transmit a Beamforming Report Poll, BRP trigger frame to one or more other wireless communication terminals after the SIFS from when the NDP frame is transmitted, wherein the BRP trigger frame is capable of triggering simultaneous transmission of feedback frames from the one or more other wireless communication terminals, and when the wireless communication terminal transmits the NDPA frame, the NDP frame, and the BRP trigger frame within the TXOP limit to the one or more other wireless communication terminals, receive at least one of the feedback frames from at least one of the one or more other wireless communication terminals, exceeding the TXOP limit, wherein the at least one of the feedback frames is transmitted after the SIFS from when the BRP trigger frame is received, wherein the wireless communication terminal is a TXOP holder. a transceiver for transmitting and receiving a wireless signal; and a processor for processing the wireless signal, wherein the processor is configured to: perform a transmission based on a transmission opportunity, TXOP, limit which is a maximum value of a TXOP, which is a time interval in which a wireless communication terminal has a right to initiate a frame exchange sequence in a wireless medium, transmit a Null Data Packet Announcement, NDPA, frame informing that a sounding protocol sequence is initiated, and transmit a Null Data Packet, NDP, frame after a short inter-frame space, SIFS from when the NDPA frame is transmitted, characterized in that the processor is further configured to: transmit a Beamforming Report Poll, BRP trigger frame to one or more other wireless communication terminals after the SIFS from when the NDP frame is transmitted, wherein the BRP trigger frame is capable of triggering simultaneous transmission of feedback frames from the one or more other wireless communication terminals, and when the wireless communication terminal transmits the NDPA frame, the NDP frame, and the BRP trigger frame within the TXOP limit to the one or more other wireless communication terminals, receive at least one of the feedback frames from at least one of the one or more other wireless communication terminals, exceeding the TXOP limit, wherein the at least one of the feedback frames is transmitted after the SIFS from when the BRP trigger frame is received, wherein the wireless communication terminal is a TXOP holder. perform a transmission based on a transmission opportunity, TXOP, limit which is a maximum value of a TXOP, which is a time interval in which a wireless communication terminal has a right to initiate a frame exchange sequence in a wireless medium, transmit a Null Data Packet Announcement, NDPA, frame informing that a sounding protocol sequence is initiated, and transmit a Null Data Packet, NDP, frame after a short inter-frame space, SIFS from when the NDPA frame is transmitted, characterized in that the processor is further configured to: transmit a Beamforming Report Poll, BRP trigger frame to one or more other wireless communication terminals after the SIFS from when the NDP frame is transmitted, wherein the BRP trigger frame is capable of triggering simultaneous transmission of feedback frames from the one or more other wireless communication terminals, and when the wireless communication terminal transmits the NDPA frame, the NDP frame, and the BRP trigger frame within the TXOP limit to the one or more other wireless communication terminals, receive at least one of the feedback frames from at least one of the one or more other wireless communication terminals, exceeding the TXOP limit, wherein the at least one of the feedback frames is transmitted after the SIFS from when the BRP trigger frame is received, wherein the wireless communication terminal is a TXOP holder. transmit a Beamforming Report Poll, BRP trigger frame to one or more other wireless communication terminals after the SIFS from when the NDP frame is transmitted, wherein the BRP trigger frame is capable of triggering simultaneous transmission of feedback frames from the one or more other wireless communication terminals, and when the wireless communication terminal transmits the NDPA frame, the NDP frame, and the BRP trigger frame within the TXOP limit to the one or more other wireless communication terminals, receive at least one of the feedback frames from at least one of the one or more other wireless communication terminals, exceeding the TXOP limit, wherein the at least one of the feedback frames is transmitted after the SIFS from when the BRP trigger frame is received, wherein the wireless communication terminal is a TXOP holder.