A radio communication system comprising: a radio terminal configured to obtain measurement information designated by a network in an idle state of the terminal and report the obtained measurement information in an active state of the terminal; and a radio station configured to operate a first cell of a first Radio Access Technology, wherein, in the first cell, the radio station comprises: a notifying means configured to notify the radio terminal of first configuration information related to obtainment of the measurement information in the first cell; and a request means configured to request the radio terminal to obtain, after the radio terminal moves to a second cell of a second Radio Access Technology different from the first Radio Access Technology, the measurement information in the second cell based on at least a part of the first configuration information; and wherein the radio terminal comprises: a receiving means configured to receive from the radio station operating the first cell of the first Radio Access Technology, the first configuration information related to obtainment of the measurement information in the first cell and to receive the request for obtaining the measurement information, after the radio terminal moves to the second cell of the second Radio Access Technology different from the first Radio Access Technology, from the radio station; and a measurement information obtaining means configured to obtain the measurement information based on at least a part of the first configuration information, based on the request. a radio terminal configured to obtain measurement information designated by a network in an idle state of the terminal and report the obtained measurement information in an active state of the terminal; and a radio station configured to operate a first cell of a first Radio Access Technology, wherein, in the first cell, the radio station comprises: a notifying means configured to notify the radio terminal of first configuration information related to obtainment of the measurement information in the first cell; and a request means configured to request the radio terminal to obtain, after the radio terminal moves to a second cell of a second Radio Access Technology different from the first Radio Access Technology, the measurement information in the second cell based on at least a part of the first configuration information; and wherein the radio terminal comprises: a receiving means configured to receive from the radio station operating the first cell of the first Radio Access Technology, the first configuration information related to obtainment of the measurement information in the first cell and to receive the request for obtaining the measurement information, after the radio terminal moves to the second cell of the second Radio Access Technology different from the first Radio Access Technology, from the radio station; and a measurement information obtaining means configured to obtain the measurement information based on at least a part of the first configuration information, based on the request. a notifying means configured to notify the radio terminal of first configuration information related to obtainment of the measurement information in the first cell; and a request means configured to request the radio terminal to obtain, after the radio terminal moves to a second cell of a second Radio Access Technology different from the first Radio Access Technology, the measurement information in the second cell based on at least a part of the first configuration information; and wherein the radio terminal comprises: a receiving means configured to receive from the radio station operating the first cell of the first Radio Access Technology, the first configuration information related to obtainment of the measurement information in the first cell and to receive the request for obtaining the measurement information, after the radio terminal moves to the second cell of the second Radio Access Technology different from the first Radio Access Technology, from the radio station; and a measurement information obtaining means configured to obtain the measurement information based on at least a part of the first configuration information, based on the request. a receiving means configured to receive from the radio station operating the first cell of the first Radio Access Technology, the first configuration information related to obtainment of the measurement information in the first cell and to receive the request for obtaining the measurement information, after the radio terminal moves to the second cell of the second Radio Access Technology different from the first Radio Access Technology, from the radio station; and a measurement information obtaining means configured to obtain the measurement information based on at least a part of the first configuration information, based on the request.