A wireless communication terminal communicating wirelessly, the terminal comprising: a transceiver; and a processor, wherein the processor is configured to receive trigger information from a base wireless communication terminal using the transceiver, determine whether to aggregate one or more MPDUs requesting an immediate response to generate an Aggregate-MAC Protocol Data Unit, A-MPDU, generate the A-MPDU according to the determination, and transmit the A-MPDU to the base wireless communication terminal, wherein: whether to aggregate one or more MPDUs requesting an immediate response is determined based on the trigger information, when the trigger information is included in a trigger frame comprising a signaling field and the value of the signaling field is a predetermined value, the processor is configured to generate the A-MPDU not including the one or more MPDUs requesting an immediate response, and when the trigger information is included in the trigger frame comprising the signaling field and the value of the signaling field is within a predetermined range, the signaling field indicates a maximum number of TIDs that is allowed to be aggregated in the A-MPDU when the wireless terminal generates the A-MPDU and the processor is configured to generate the A-MPDU according to the maximum number of TIDs, wherein the one or more MPDUs requesting an immediate response comprises an action frame, characterized in that when the trigger information is included in a MAC header, the processor is configured to generate the A-MPDU not including the one or more MPDUs requesting an immediate response. a transceiver; and a processor, wherein the processor is configured to receive trigger information from a base wireless communication terminal using the transceiver, determine whether to aggregate one or more MPDUs requesting an immediate response to generate an Aggregate-MAC Protocol Data Unit, A-MPDU, generate the A-MPDU according to the determination, and transmit the A-MPDU to the base wireless communication terminal, wherein: whether to aggregate one or more MPDUs requesting an immediate response is determined based on the trigger information, when the trigger information is included in a trigger frame comprising a signaling field and the value of the signaling field is a predetermined value, the processor is configured to generate the A-MPDU not including the one or more MPDUs requesting an immediate response, and when the trigger information is included in the trigger frame comprising the signaling field and the value of the signaling field is within a predetermined range, the signaling field indicates a maximum number of TIDs that is allowed to be aggregated in the A-MPDU when the wireless terminal generates the A-MPDU and the processor is configured to generate the A-MPDU according to the maximum number of TIDs, wherein the one or more MPDUs requesting an immediate response comprises an action frame, characterized in that when the trigger information is included in a MAC header, the processor is configured to generate the A-MPDU not including the one or more MPDUs requesting an immediate response. whether to aggregate one or more MPDUs requesting an immediate response is determined based on the trigger information, when the trigger information is included in a trigger frame comprising a signaling field and the value of the signaling field is a predetermined value, the processor is configured to generate the A-MPDU not including the one or more MPDUs requesting an immediate response, and when the trigger information is included in the trigger frame comprising the signaling field and the value of the signaling field is within a predetermined range, the signaling field indicates a maximum number of TIDs that is allowed to be aggregated in the A-MPDU when the wireless terminal generates the A-MPDU and the processor is configured to generate the A-MPDU according to the maximum number of TIDs, wherein the one or more MPDUs requesting an immediate response comprises an action frame, characterized in that when the trigger information is included in a MAC header, the processor is configured to generate the A-MPDU not including the one or more MPDUs requesting an immediate response.