According to one embodiment, a wireless communication device includes a receiver, a controller and a transmitter. The receiver receives a terminal identifier of a first terminal being a target for downlink frequency multiplexing transmission from another wireless communication device, and receives information identifying, of a plurality of frequency components, a first frequency component allocated to the first terminal. The controller selects, of a plurality second terminals belonging to the wireless communication device, a second terminal having a terminal identifier same as that of the first terminal and allocates the first frequency component to the selected second terminal. The transmitter transmits a header at a band including the plurality of frequency components, the header including the terminal identifier of the selected second terminal in a first field corresponding to the first frequency component, and transmits a first frame addressed to the selected second terminal via the first frequency component.