Wireless communication device and wireless communication method

A wireless communication device, comprising:

• processing circuitry configured to
• transmit a first signal to a first wireless communication device, the first signal including first precision information indicating a precision of a transmission power at the wireless communication device, the precision of the transmission power being a difference between a setting value at the wireless communication device and an actually measured value of the transmission power measured at the wireless communication device;
• receive a second signal indicating a permission of multiple access and a notification of assignment to a particular multiple access group, the permission of multiple access allowing simultaneous communication after the transmission of the first signal, the permission of multiple access having been determined based on first precision information, and the notification indicating that the wireless communication device is assigned to the particular multiple access group based on the precision of the transmission power indicated in the first precision information;
• and control, based on the second signal, transmission of a third signal via simultaneous communication with another wireless communication device belonging to the particular multiple access group, wherein the second signal includes a group notification frame which identifies the first wireless communication device in the particular multiple access group.

A wireless communication method, comprising:

• transmitting a first signal, by processing circuitry of a wireless communication device to a first wireless communication device, including first precision information indicating a precision of a transmission power at the wireless communication device, the precision of the transmission power being a difference between a setting value at the wireless communication device and an actually measured value of the transmission power measured at the wireless communication device;
• receiving a second signal indicating a permission of multiple access and a notification of assignment to a particular multiple access group, the permission of multiple access allowing simultaneous communication after the transmission of the first signal, the permission of multiple access having been determined based on first precision information, and the notification indicating that the wireless communication device is assigned to the particular multiple access group based on the precision of the transmission power indicated in the first precision information;
• and controlling, by the processing circuitry based on the second signal, transmission of a third signal via simultaneous communication with another wireless communication device belonging to the particular multiple access group, wherein the second signal includes a group notification frame which identifies the first wireless communication device in the particular multiple access group.