Wireless communication device and wireless communication method

A wireless communication device which transmits a data signal and a first control signal associated with the data signal to another wireless communication device, the wireless communication device comprising:

• a transmitter configured to transmit, to the another wireless communication device, a series of first frames having a first frame length through a first subband and a series of second frames having a second frame length through a second subband, the second frame length differing from the first frame length;
• and
• a processor configured to:
• generate the first control signal of the first frame through the first subband and the data signal associated with the first control signal of the second frames through the second subband, and
• include, in the first control signal, predetermined information specifying which of the second frames includes the data signal.

A wireless communication device which transmits or receives a data signal and a control signal associated with the data signal to or from another wireless communication device, respectively, the wireless communication device comprising:

• a circuit configured to:
• transmit, to the another wireless communication device, a series of first frames having a first frame length through a first subband and a series of second frames having a second frame length through a second subband, the series of second frames not synchronizing with the series of first frames, the second frame length differing from the first frame length, and
• receive, from the another wireless communication device, a series of third frames having a third frame length through a third subband and a series of fourth frames having a fourth frame length through a fourth subband, the series of fourth frames not synchronizing with the series of third frames, the fourth frame length differing from the third frame length;
• and
• a processor configured to:
• generate the first control signal of the first frame through the first subband and a first data signal associated with the first control signal of the second frames through the second subband,
• include, in the first control signal, predetermined information specifying which of the second frames includes the first data signal,
• obtain the third control signal of the third frame through the third subband and a second data signal associated with the third control signal of the fourth frames through the fourth subband, and
• specify which of the fourth frames includes the second data signal, based on predetermined information included in the third control signal.