In the embodiment of FIG. 11, the first station STA1 transmits a BSR to an access point AP. The access point AP receives the BSR and schedules the uplink transmission of the first station STA1 based on the received BSR. The access point AP transmits information on the scheduled UL MU transmission using a beacon frame. At this time, the information on the scheduled UL MU transmission may include information for identifying the wireless communication terminal scheduled for the UL MU transmission. At this time, the information on the scheduled UL MU transmission may be a bit map indicating whether the Association ID (AID) or the wireless communication terminal corresponding to the AID is scheduled for the UL MU transmission. The first station STA1 receives the beacon frame from the access point AP and obtains information on the scheduled UL MU transmission from the beacon frame. When the information on the scheduled UL MU transmission indicates that the first station STA1 is scheduled for UL MU transmission, the first station STA1 applies the MU EDCA parameter set.
FIG. 12 shows an operation in which a wireless communication terminal according to another embodiment of the present invention obtains information on an MU EDCA parameter set from a trigger frame and applies the information on an MU EDCA parameter set.
