COMMUNICATION DEVICE AND METHOD OF COMMUNICATION Russian patent published in 2021 - IPC H04W74/08 H04W72/02 H04W84/12 

FIELD: communication equipment.

SUBSTANCE: invention relates to a communication device which controls a channel access operation in a multi-user environment and a communication method. Disclosed is a communication device which controls a channel access operation in a multi-user environment, and a communication method. Control of operation of access to channel of each STA after MU is completed is performed through launching frame coming from AP, to prevent collision immediately after MU mode completion. In addition, AP sets smaller competitive access window (CW) after transmitting start frame than CW STA, that it is preferable to transmit the triggering frame and to provide the communication priority performed in the MU mode over the communication performed in the single-user (SU) mode. Besides, by means of CW of each STA after mode switching, which has not been reset, transmission waiting period is shortened after MU mode completion.

EFFECT: technical result is reduction of collisions in multiuser (MU) transmission.

13 cl, 14 dwg