Radio communication system, radio station, radio terminal, communication control method and transient media interpretable by computer

摘要

A radio terminal (3) configured to perform dual connectivity using a first cell (10) operated by a first base station (1) and a second cell (20) operated by a second base station (2), wherein the terminal radio (3) comprises: a first timer used to detect a failure in the radio link in the first cell (10); a second timer, which is different from the first timer, used to detect a failure in the radio link in the second cell (20); at least one processor (35) configured to detect the failure in the radio link in the second cell (20) using the second timer; and a transceiver (31) configured to transmit, to the first base station (10), the information on the failure in the radio link in the second cell (20), after the detection of the failure in the radio link in the second cell (20), characterized in that the information on the failure in the radio link in the second cell (20) includes, as a type of failure that must be reflected in the information on the failure in the radio link in the second cell (20), that information indicating that the second timer ended.