Patent ID: 8918105

Claim:
A mobile communication method comprising: a step of transmitting, by a mobile station that is in communication in a cell of a first frequency, indication information to a radio base station managing the cell of the first frequency, upon detection of entry of a predetermined area corresponding to a cell of a second frequency for which the mobile station has access permission or upon detection of exit from the predetermined area; a step of transmitting, by the radio base station to the mobile station, a measurement configuration instructing the mobile station to start measuring a radio quality in the cell of the second frequency when the radio base station has received the indication information; a step of transmitting, by the mobile station to the radio base station in response to the measurement configuration, a measurement report including cell identification information used in a scrambling process for a synchronization signal broadcasted in the cell of the second frequency; a step of transmitting, by the radio base station to the mobile station, a report request instructing to start transmitting predetermined information broadcasted in the cell of the second frequency when the radio base station has received the measurement report; and a step of reporting, by the mobile station, the predetermined information in response to the report request received from the radio base station.