Wireless communication terminal and wireless communication method for multiuser EDCA operation

A wireless communication terminal, the terminal comprising:

• a communication unit;
• and
• a processor configured to control transmission and reception of a wireless signal through the communication unit,
• wherein the processor is configured to:
• receive a first frame including at least one of a first enhanced distributed channel access(EDCA) parameter set and a second EDCA parameter set,
• transmit a second frame related to a specific operation of the terminal,
• wherein the second frame includes an operation mode subfield including a disable subfield indicating whether the terminal participates in the specific operation, and
• perform a channel access based on updated EDCA parameters according to a parameter set selected among the first EDCA parameter set or the second EDCA parameter set,
• wherein the EDCA parameters are updated based on the first EDCA parameter set based on whether the disable subfield indicates participation in the specific operation and whether an immediate response of the second frame is received according to whether the disable subfield indicates participation in the specific operation.