Uplink multi-user multiple-input and multiple-output (UL MU-MIMO) transmission request method in UL MU-MIMO communication

A method of transmitting and receiving a frame for a multi-user multiple-input and multiple-output (MU-MIMO) communication in a station (STA), the method comprising:

• receiving, from an access point (AP), an uplink multi-user request (UL MU request) frame requesting transmission of a data frame based on identification information on the STA;
• determining a transmission intensity based on the UL MU request to frame;
• and
• transmitting, to the AP, the data frame based on the determined transmission intensity,
• wherein the identification information on the STA is included in the UL MU request frame, the identification information comprises association identification (AID) information,
• wherein the UL MU request frame includes a Requested Rx power field, the Requested Rx power field includes information on a reception intensity requested when the AP receives the data frame.

An Access Point (AP) for use in a multi-user multiple-input and multiple-output (MU-MIMO) communication, the AP comprising:

• a communicator;
• a controller configured to control the communicator;
• wherein the controller is further configured to:
• cause the communicator to transmit, to each of a plurality of stations (STAs), an uplink multi-user request (UL MU request) frame requesting transmission of a data frame based on identification information on each of the plurality of STAs,
• cause the communicator to receive, from each of the plurality of STAs, the data frame based on an identical reception intensity,
• wherein the UL MU request frame comprises a Requested Rx power field, the Requested Rx power field includes information on a reception intensity requested when the AP receives a data frame.