A mobile communication method includes the steps of: transmitting, from a radio base station (eNB) to a mobile station (UE), a measurement rule designation command which designates addition or deletion of a measurement rule; transmitting, from the radio base station (eNB) to the mobile station (UE), a measurement object designation command, which designates addition or deletion of a measurement object, independently from the measurement rule designation command; and transmitting, from the radio base station (eNB) to the mobile station (UE), a mapping designation command which designates associating of the measurement object with the measurement rule.