MOBILE COMMUNICATION SYSTEM, MOBILE STATION AND RADIO BASE STATION

摘要

In a mobile communication system, a mobile station (UE) uses an uplink radio resource allocated by a radio base station (eNB) to transmit an uplink data to the radio base station (eNB). If the radio base station (eNB) has allocated the uplink radio resource to the mobile station (UE) a predetermined number of times, then the mobile station (UE) uses the allocated uplink radio resource to report, to the radio base station (eNB), the amount of data retained in a transmission buffer of the mobile station (UE).