A communication device serving as a base station configured to notify a mobile station of a warning or an upper device of the base station includes a controller configured to shut down the warning, notified from the base station based on warning information, upon determining the congestion condition of the base station, and a communication part configured to transmit the information regarding a shutdown of warning. Herein, the controller compares a first threshold with a resource usage rate or the amount of resources in the base station, thus determining the congestion condition of the base station. Additionally, the controller compares a second threshold with the warning information so as to determine a shutdown of warning. The second threshold can be set based on the resource usage rate or the type of the base station.