Frame transmitting/recovering method for delay-free relaying in mobile communication system

A frame transmitting/recovering method for delay-free relaying in a mobile communication system is provided to transmit the resource allocation information and the position and the modulation type of the information together. A base station or a relay station transmits a frame to another relay station in a mobile communication system. A process for assigning the area position for displaying the resource allocation information at the header of the area for transmitting data to another relay station from the base station or the relay station is performed. The frame including the information of the header and the resource allocation is transmitted. The header includes the information for assigning a modulation manner of the area for displaying resource allocation information. The header is the R-FCH(relay-frame control header). The area for displaying resource allocation information is the R-MAP(relay-maximum a posteriori). The resource allocation information is restored from the area for displaying resource allocation information.