Wireless communication device

A wireless communication device communicating with a second wireless communication device, comprising:

• a receiver configured to
• receive a terminal identifier of a first terminal being a target for downlink frequency multiplexing transmission from the second wireless communication device and the terminal identifier of the first terminal being allocated by the second wireless communication device, and
• receive information identifying, among a plurality of frequency components, a first frequency component allocated to the first terminal;
• a controller configured to
• select, among a plurality of second terminals belonging to the wireless communication device, a terminal identifier of the second terminal being allocated by the wireless communication device and being same as the terminal identifier of the first terminal, and
• allocate the first frequency component to the selected second terminal;
• and
• a transmitter configured to transmit a first physical packet in a period at least partially overlapping with a period in which a second physical packet is transmitted from the second wireless communication device, the first physical packet including
• (1) a first header containing a plurality of first fields associated with the plurality of frequency components, the terminal identifier of the selected second terminal being set in a field corresponding to the first frequency component among the plurality of first fields, and
• (2) a first frame addressed to the second terminal,
• wherein the first header is transmitted at a frequency band including the plurality of frequency components and the first frame is transmitted via the first frequency component, the transmitter being configured to transmit the terminal identifier of the second terminal and the information identifying the first frequency component to the second wireless communication device,
• wherein the second physical packet including
• (1) a second header containing a plurality of second fields associated with the plurality of frequency components, the terminal identifier of the first terminal being set in a field corresponding to the first frequency component among the plurality of second fields, and
• (2) a second frame addressed to the first terminal, the second header being transmitted at the frequency band including the plurality of frequency components and the second frame is transmitted via the first frequency component, and
• a format of the first header being the same as a format of the second header.

A wireless communication device communicating with a second wireless communication device, comprising:

• a receiver configured to
• receive a terminal identifier of a first terminal being a target for downlink frequency multiplexing transmission from second wireless communication device, and
• receive information identifying, among a plurality of frequency components, a first frequency component allocated to the first terminal, the terminal identifier of the first terminal being allocated by the second wireless communication device;
• a controller configured to select, among a plurality second terminals belonging to the wireless communication device, at least one second terminal allocated with the first frequency component, the terminal identifier of the at least one second terminal being allocated by the wireless communication device;
• and
• a transmitter configured to transmit a first physical packet in a period at least partially overlapping with a period in which a second physical packet is transmitted from the second wireless communication device, the first physical packet including
• (1) a first header containing at least a plurality of first fields associated with the first frequency component, the terminal identifier of the first terminal being set in a field of the plurality of first fields associated with the first frequency component, a terminal identifier of the at least one selected second terminal being set in at least one field of the plurality of first fields associated with the first frequency component, and
• (2) at least one first frame addressed to the at least one second terminal,
• wherein the first header is transmitted at a frequency band including the plurality of frequency components and
• the at least one first frame is transmitted via the first frequency component in a spatial multiplexing manner,
• the transmitter is configured to transmit the terminal identifier of the at least one second terminal and the information identifying the first frequency component to the second wireless communication device,
• the second physical packet includes
• (1) a second header containing a plurality of second fields associated with the first frequency component, the terminal identifier of the first terminal being set in a field of the plurality of second fields associated with the first frequency component and the terminal identifier of the at least one selected second terminal being set in at least one field of the plurality of second fields associated with the first frequency component, and
• (2) a second frame addressed to the first terminal,
• wherein the second header is transmitted at the frequency band including the plurality of frequency components,
• the first frame is transmitted via the first frequency component in a spatial multiplexing manner, and
• a format of the first header is the same as a format of the second header.

A wireless communication device communicating with a second wireless communication device, comprising:

• a receiver configured to receive information of a second frequency band used for transmission of a first frame by the second wireless communication device, the first frame instructing a plurality of first terminals to perform uplink frequency multiplexing transmission at a first frequency band including a plurality of frequency components, and specifying frequency components for the uplink frequency multiplexing transmission to the first terminals,
• a transmitter configured to transmit a second frame at a third frequency band different from the second frequency band, the second frame instructing a plurality of second terminals belonging to the wireless communication device to perform the uplink frequency multiplexing transmission at the first frequency band and the second frame specifying frequency components for the uplink frequency multiplexing transmission to the second terminals, the second frame being transmitted in a period at least overlapping with a period in which the first frame is transmitted,
• a frequency component specified for a first terminal existing in a distant area of the second wireless communication device is different from a frequency component specified for a second terminal in a distant area of the wireless communication device, and
• a frequency component specified for another first terminal being judged by the second wireless communication device that interference from the wireless communication device is small is the same as a frequency component specified for another second terminal being judged by the wireless communication device that interference from the second wireless communication device is small.