Terminal device, PGW, and TWAG
摘要
說明書
The Cause may be information representing that the PDN type of the PDN address assigned to the UE 10 is different from the PDN type requested by the UE 10 in the PDN connectivity request and/or the information representing that the PDN connection attribute is different from the PDN connection attribute requested by the UE 10 in the PDN connectivity request. As described above, the TWAG 74 may notify the UE 10 that the established PDN connection is the single-access PDN connection although the UE 10 has requested the establishment of the multi-access PDN connection, by using the Cause. Note that the TWAG 74 and/or the PGW 30 may include the fourth identification information in the PCO.
The UE 10 receives the PDN Connectivity Accept transmitted from the TWAG 74. Based on the reception of the PDN Connectivity Accept and/or the fourth identification information included in the PDN Connectivity Accept, the UE 10 transmits a PDN connectivity complete to the TWAG 74 (S1810). The UE 10 may transmit the PDN connectivity complete including at least the PDN connectivity complete message ID (PDN connectivity complete), the Procedure transaction ID, and the PDN connection ID. Here, the PDN connectivity complete message ID may be a message type representing the PDN connectivity complete message.
At the completion of the third PDN connectivity procedure, the UE 10 and the PGW 30 cannot establish the first PDN connection. In other words, the UE 10 and the PGW 30 may establish the second PDN connection based on the completion of the third PDN connectivity procedure.
