According to an embodiment, a radio relay communication device is described a radio receiver configured to receive data from a radio base station, a radio sender configured to send data received from the radio base station to at least one mobile terminal, a detector configured to detect whether a pre-determined transmission symbol sequence has been received from the radio base station, a changing circuit configured to change the transmission symbol sequence such that from the change of the transmission symbol sequence an identification of the relay communication device can be determined, and a controller configured to control the radio sender configured to send the changed transmission symbol sequence to at least one mobile terminal.