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 slave stations via the communication unit, wherein the controller allows the communication unit serving as a master station to perform multicast transmission to the plurality of slave stations and to request an acknowledgement for the multicast transmission from the slave station, and the communication unit performs a process of receiving an acknowledgement response simultaneously transmitted from the plurality of slave stations, characterized in that the controller is further configured to specify a transmission scheme of the acknowledgement response frame via the communication unit, the transmission scheme including an encoding scheme of a training signal of the acknowledgement response frame used to form a format capable of separating the frames transmitted simultaneously from the plurality of slave stations using calculation, and in that the communication unit is 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 slave stations in accordance with the encoding scheme, and separate a plurality of acknowledgement response frames received simultaneously from 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 slave stations via the communication unit, wherein the controller allows the communication unit serving as a master station to perform multicast transmission to the plurality of slave stations and to request an acknowledgement for the multicast transmission from the slave station, and the communication unit performs a process of receiving an acknowledgement response simultaneously transmitted from the plurality of slave stations, characterized in that the controller is further configured to specify a transmission scheme of the acknowledgement response frame via the communication unit, the transmission scheme including an encoding scheme of a training signal of the acknowledgement response frame used to form a format capable of separating the frames transmitted simultaneously from the plurality of slave stations using calculation, and in that the communication unit is 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 slave stations in accordance with the encoding scheme, and separate a plurality of acknowledgement response frames received simultaneously from 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 slave stations in accordance with the encoding scheme, and separate a plurality of acknowledgement response frames received simultaneously from 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>