A method, performed by a device configured to perform communication with a base station, and including detecting whether an abnormality of the device occurs in response to an event signal, sending a request to the base station for permission to change a capability of the device based on the detecting that the abnormality occurs, changing the capability of the device based on a permission indication received from the base station in response to the sending the request, sending changed capability information to the base station based on the changing, and performing a radio resource connection (RRC) reconfiguration operation based on an RRC reconfiguration message received from the base station in response to the sending the changed capability information. A device performing the method adaptively changes a capability of the device to mitigate an error or impairment caused by an abnormality.