An objective of the present invention is to carry out an appropriate measurement process even when an "Additional Carrier" is applied. A mobile communication method according to the present invention comprises: a step of a wireless base station (eNB#1) transmitting to a mobile station (UE) which is in an "RRC_Connected state" in a cell (#11) information for identifying a measurement signal to be used in a measurement process in a cell (#11A); and a step of the mobile station (UE) carrying out the measurement process in the cell (#11A) on the basis of the received information for identifying the measurement signal. The measurement signal is a signal other than a CRS.