A data transceiver device in a repeater according to an exemplary embodiment includes: a radio unit assigned with a unique port number for uniquely identifying the radio unit and a layer splitter connected to the radio unit; a transfer unit configured to transfer an inbound packet to the layer splitter identified by the unique port number when the inbound packet including the unique port number as an internal port number is received; and the layer splitter configured to transfer the inbound packet to the radio unit corresponding to the unique port number when the inbound packet is received through transfer unit.