Wireless usb host, wireless usb device, method for providing function of drd host and functioning as a drd host

A wireless USB(Universal Serial Bus) host, a wireless USB device, and a method for providing and performing a function of a dual role device are provided to reduce the use of a wireless channel and perform a function of a dual role device host by implementing a point-to-point network through a base link without an inverse link in a wireless USB environment. A wireless USB host includes a searching unit(940), a control transfer packet generation unit(950), and a transceiving unit(920). The searching unit(940) searches a probability of beacon generation of an opposite apparatus with reference to a message received in a wireless USB point-to-point dual role device communication environment. The control transfer packet generation unit(950) generates a control transfer packet including beacon synchronization information, channel time allotment information, and data transfer direction information according to the search result. The transceiving unit(920) transmits the control transfer packet with reference to the beacon synchronization information, and transceives data with the opposite apparatus with reference to the channel time allotment information, and the data transfer direction information.