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

1. 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,

when the trigger information is included in a MAC header, generate an Aggregate-MAC Protocol Data Unit (A-MPDU) in response to the trigger information not to include one or more MPDUs requesting an immediate response, and

transmit the A-MPDU to the base wireless communication terminal,

wherein when the trigger information is included in the MAC header, the trigger information does not include information on a maximum number TIDs that is allowed to be aggregated in the A-MPDU,

wherein when the trigger information is included in the trigger frame, the trigger frame includes a signaling field,

wherein the signaling field indicates that the wireless communication terminal is not allowed to aggregate the one or more MPDUs requesting an immediate response to generate the A-MPDU in response to the trigger information when a value of the signaling field is a predetermined value, and indicates the maximum number of TIDs when the value of the signaling field is within a predetermined range.

2. The wireless communication terminal of claim 1 , wherein when the trigger information is included in the MAC header, the processor is configured to aggregate any one of an ACK frame and a Block ACK (BA) frame, with one or more MPDUs not requesting an immediate response, without the one or more MPDUs requesting an immediate response to generate the A-MPDU.

3. The wireless communication terminal of claim 2 , wherein the one or more MPDUs not requesting an immediate response comprises at least one of a QoS Null frame not requesting an ACK for the QoS Null frame and an Action No Ack frame not requesting an ACK for the Action No Ack frame.

4. A method of operating a wireless communication terminal communicating wirelessly, the method comprising:

receiving trigger information from a base wireless communication terminal using the transceiver,

when the trigger information is included in a MAC header, generating an Aggregate-MAC Protocol Data Unit (A-MPDU) in response to the trigger information not to include one or more MPDUs requesting an immediate response, and

transmitting the A-MPDU to the base wireless communication terminal,

wherein when the trigger information is included in the MAC header, the trigger information does not include information on a maximum number TIDs that is allowed to be aggregated in the A-MPDU,

wherein when the trigger information is included in the trigger frame, the trigger frame includes a signaling field,

wherein the signaling field indicates that the wireless communication terminal is not allowed to aggregate the one or more MPDUs requesting an immediate response to generate the A-MPDU in response to the trigger information when a value of the signaling field is a predetermined value, and indicates the maximum number of TIDs when the value of the signaling field is within a predetermined range.

5. The method of claim 4 , wherein the generating the A-MPDU comprises aggregating any one of an ACK frame and a Block ACK (BA) frame, with one or more MPDUs not requesting an immediate response, without the one or more MPDUs requesting an immediate response to generate the A-MPDU when the trigger information is included in the MAC header.

6. The method of claim 5 , wherein the one or more MPDUs not requesting an immediate response comprises at least one of a QoS Null frame not requesting an ACK for the QoS Null frame and an Action No Ack frame not requesting an ACK for the Action No Ack frame.