Wireless communication device

A wireless communication device, comprising:

• a receiver configured to receive a first frame, wherein a transmitter address of the first frame is an address of a first wireless communication device, a receiver address of the first frame is an address of the wireless communication device, and the first frame is a MAC (Medium Access Control) frame;
• and
• a transmitter configured to copy a bit string of a value in a transmitter address field of the first frame, set the bit string copied in a receiver address field of a second frame, change a value in a first region of the bit string in the receiver address field of the second frame with a predetermined first value, and transmit the second frame in a predetermined time of period after the first frame is received in response to receipt of the first frame, wherein the second frame is a MAC (Medium Access Control) frame, wherein
• the predetermined first value is different from a value in a first region of the address of the first wireless communication device,
• the bit string in the receiver address field of the second frame is identifiable by the first wireless communication device and a second wireless communication device which have received the second frame, and
• the predetermined first value is different from a value in a first region of an address of the second wireless communication device,
• wherein the first region of the bit string in the receiver address field of the second frame is a first beginning bit of the receiver address field of the second frame,
• the first region of the address of the first wireless communication device is a second beginning bit of the address of the first wireless communication device, and
• the first region of the address of the second wireless communication device is a third beginning bit of the address of the second wireless communication device.