MOBILE COMMUNICATION METHOD AND RADIO BASE STATION

摘要

When, using a handover request message of a mobile station (UE), a handover source radio base station (S-eNB) notifies a radio base station (T-eNB) whether or not user plane data to be transferred to the radio base station (T-eNB) is present on each access bearer set between the radio base station (T-eNB) and an upper-level node (SGW), the radio base station (T-eNB) sets a data transfer tunnel for transferring the user plane data for only an access bearer on which the user plane data to be transferred is present.