A wireless communication device comprising: a communication unit configured to communicate wirelessly with a plurality of slave stations under control; and a controller configured to control data transmission with each of the plurality of slave stations via the communication unit, wherein the controller is further configured to allow the communication unit serving as a master station to perform transmission to the plurality of slave stations and to transmit a Multi-User Block Ack Request, MU-BAR, frame requesting a Multi-User Block Ack, MU-BA, frame from each of the plurality of slave stations as acknowledgement for the transmission, and the communication unit is further configured to perform a process of receiving the MU-BA frame simultaneously transmitted from each of the plurality of slave stations, characterized in that the controller is further configured to specify a transmission scheme of the MU-BA frame in the MU-BAR frame via the communication unit, the transmission scheme including an encoding scheme of a training signal of the MU-BA frame used to form a format capable of separating the MU-BA frame transmitted simultaneously from each of the plurality of slave stations using calculation, and in that the communication unit is further configured to acquire information on a propagation path between each of the plurality of slave stations and the wireless communication device from the training signal transmitted from each of the plurality of slave stations in accordance with the encoding scheme, and separate the MU-BA frame received simultaneously from each of the plurality of slave stations on a basis of the information on the propagation path between each of the plurality of slave stations and the wireless communication device. a communication unit configured to communicate wirelessly with a plurality of slave stations under control; and a controller configured to control data transmission with each of the plurality of slave stations via the communication unit, wherein the controller is further configured to allow the communication unit serving as a master station to perform transmission to the plurality of slave stations and to transmit a Multi-User Block Ack Request, MU-BAR, frame requesting a Multi-User Block Ack, MU-BA, frame from each of the plurality of slave stations as acknowledgement for the transmission, and the communication unit is further configured to perform a process of receiving the MU-BA frame simultaneously transmitted from each of the plurality of slave stations, characterized in that the controller is further configured to specify a transmission scheme of the MU-BA frame in the MU-BAR frame via the communication unit, the transmission scheme including an encoding scheme of a training signal of the MU-BA frame used to form a format capable of separating the MU-BA frame transmitted simultaneously from each of the plurality of slave stations using calculation, and in that the communication unit is further configured to acquire information on a propagation path between each of the plurality of slave stations and the wireless communication device from the training signal transmitted from each of the plurality of slave stations in accordance with the encoding scheme, and separate the MU-BA frame received simultaneously from each of the plurality of slave stations on a basis of the information on the propagation path between each of the plurality of slave stations and the wireless communication device. acquire information on a propagation path between each of the plurality of slave stations and the wireless communication device from the training signal transmitted from each of the plurality of slave stations in accordance with the encoding scheme, and separate the MU-BA frame received simultaneously from each of the plurality of slave stations on a basis of the information on the propagation path between each of the plurality of slave stations and the wireless communication device. <EOS>