MOBILE COMMUNICATION SYSTEM, COMMUNICATION METHOD, AND MOBILE STATION, RADIO BASE STATION, AND HIGHER-ORDER APPARATUS FOR RADIO BASE STATION USED FOR MOBILE COMMUNICATION SYSTEM AND COMMUNICATION METHOD

摘要

The present invention provides a mobile communication system configured such that in transferring a control message not requiring establishment of a connection, the system transfers the control message without establishing a connection. The mobile communication system according to the present invention includes a mobile station, a radio base station, and a higher-order apparatus for the radio base station. When transmitting a control message from the mobile station to the higher-order apparatus, the mobile station transmits information to the higher-order apparatus, indicating whether or not it is necessary to establish an individual connection for the mobile station. The higher-order apparatus receives and uses the information to determine that it is not necessary to establish the individual connection for the mobile station.