Wireless communication device and wireless communication method

A radio communication apparatus that is a first radio communication apparatus, the radio communication apparatus comprising:

• a transmitter, which, in operation, transmits a first control signal to a second radio communication apparatus, and then transmits a second control signal;
• and
• a controller, which, in operation, determines whether or not downlink transmission to the second radio communication apparatus is possible in a coordination scheme of spatial reuse, based on a response to the second control signal.

A radio communication method, comprising:

• assigning, by a first radio communication apparatus, an identifier to a second radio communication apparatus not included in a basic service set to which the first radio communication apparatus belongs;
• and
• transmitting, by the first radio communication apparatus, a signal including the identifier.

A radio communication apparatus that is a first radio communication apparatus, the radio communication apparatus comprising:

• a receiver, which, in operation, receives, from a second radio communication apparatus, a signal including an identifier of the first radio communication apparatus not included in a basic service set to which the second radio communication apparatus belongs.

A radio communication method, comprising:

• receiving, by a first radio communication apparatus, from a second radio communication apparatus, a signal including an identifier of the first radio communication apparatus not included in a basic service set to which the second radio communication apparatus belongs.