Terminal device, PGW, and TWAG
摘要
說明書
When the TWAG 74 requests the establishment of the multi-access PDN connection of the UE-Initiated mode, the TWAG 74 may include the TFT in the Create Session Request. Alternatively, when the TWAG 74 requests the establishment of the multi-access PDN connection of the Network-Initiated mode, the TWAG 74 need not include the TFT in the Create Session Request.
Note that when the first identification information is not included in the PDN connectivity request, the TWAG 74 may transmit the Create Session Request without including the second identification information. Moreover, when the first identification information is not included in the PDN connectivity request, the TWAG 74 may perform a procedure for establishing the single-access PDN connection.
The PGW 30 receives the Create Session Request transmitted from the TWAG 74. Based on the reception of the Create Session Request, and/or the first identification information and/or second identification information included in the Create Session Request, the PGW 30 may perform the IP-CAN session update procedure with the PCRF 60.
Based on the reception of the Create Session Request and/or the first identification information and/or second identification information included in the Create Session Request, the PGW 30 may perform the IP-CAN session update procedure including at least the first identification information, the second identification information, and the third identification information (S1606).
Here, the third identification information may be the PGW NBIFOM capability representing that the PGW 30 supports the NBIFOM. Note that the NBIFOM capability may be information indicating the possession of the function of establishing the multi-access PDN connection.
