Wireless communication method using trigger information, and wireless communication terminal using same

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, wherein the trigger information triggers a transmission of a trigger-based physical layer protocol data unit (PPDU) by the wireless communication terminal, wherein when the trigger information is included in a trigger frame, the trigger frame comprises a signaling field indicating whether the wireless communication terminal is allowed to aggregate one or more MPDUs requesting an immediate response to generate Aggregate-MAC Protocol Data Unit (A-MPDU),
• determine whether to aggregate one or more MPDUs requesting an immediate response to generate the A-MPDU based on the signaling field when the trigger information is included in the trigger frame,
• generate the A-MPDU according to the determination when the trigger information is included in the trigger frame, and
• transmit the trigger-based PPDU including the A-MPDU to the base wireless communication terminal.

A base wireless communication terminal communicating wirelessly, the terminal comprising:

• a transceiver;
• and
• a processor,
• wherein the processor is configured to:
• generate trigger information to a plurality of wireless communication terminals using the transceiver, wherein the trigger information triggers a transmission of a trigger-based physical layer protocol data unit (PPDU) by the wireless communication terminal and is included in a trigger frame which include a first signaling field, wherein the first signaling field indicates whether aggregating one or more MPDUs requesting an immediate response to generate an Aggregate-MAC Protocol Data Unit (A-MPDU) is allowed and indicates a maximum number of TIDs that is allowed to be aggregated in the A-MPDU when the wireless terminal generates the A-MPDU,
• when a wireless communication terminal corresponding to the first signaling field is not allowed to aggregate one or more MPDUs requesting an immediate response to generate the A-MPDU, set a value of the first signaling field to a predetermined value,
• transmit the trigger frame, and
• receive the trigger-based PPDU including the A-MPDU from at least one of the plurality of wireless communication terminals,
• wherein one or more MPDUs requesting an immediate response are aggregated or not, based on the first signaling field, in the A-MPDU.