User equipment, intra-core network apparatus, and communication control method
According to an aspect of the present invention, a procedure and a communicator for initial registration of UE or periodic or mobility-based registration for achieving Network Slice Specific Authentication and Authorization in 5GS. Furthermore, a communicator for achieving a function related to Network Slice Specific Authentication and Authorization in 5GS is provided by providing a procedure and a communicator for changing a UE configuration initiated by a network, the procedure being initiated based on the Network Slice Specific Authentication and Authorization initiated by the network and completion of the Network Slice Specific Authentication and Authorization.
1. A User Equipment (UE) comprising:
a transmission and reception unit;
a controller; and
a storage, wherein
the controller is configured to store a first Single Network Slice Selection Assistance Information (S-NSSAI), which is pending for a network slice-specific authentication and authorization, into a first Network Slice Selection Assistance Information (NSSAI) in the storage,
the transmission and reception unit is configured to receive a Configuration update command message including an allowed NSSAI from a core network, and
in a case that the first S-NSSAI is included in the allowed NSSAI, the controller is further configured to remove the first S-NSSAI from the first NSSAI in the storage, and
in a case that the Configuration update command message includes a rejected NSSAI for a failed or revoked Network Slice-Specific Authentication and Authorization and the first S-NSSAI is included in the rejected NSSAI, the controller is further configured to remove the first S-NSSAI from the first NSSAI in the storage and store the first S-NSSAI into a second NSSAI in the storage.
2. The UE according to claim 1 , wherein
the controller does not include the first S-NSSAI, which is stored in the storage, in a requested NSSAI.
3. The UE according to claim 1 , wherein
in a registration procedure, the transmission and reception unit is further configured to send a registration request message including capability information, which indicates whether the UE supports the network slice-specific authentication and authorization, to the core network.
4. A communication control method for a User Equipment (UE), the communication control method comprising:
storing a first Single Network Slice Selection Assistance Information (S-NSSAI), which is pending for a network slice-specific authentication and authorization, into a first Network Slice Selection Assistance Information (NSSAI) in a storage;
receiving a Configuration update command message including an allowed NSSAI from a core network;
in a case that the first S-NSSAI is included in the allowed NSSAI, removing the first S-NSSAI from the first NSSAI in the storage; and
in a case that the Configuration update command message includes a rejected NSSAI for a failed or revoked Network Slice-Specific Authentication and Authorization and the first S-NSSAI is included in the rejected NSSAI, removing the first S-NSSAI from the first NSSAI in the storage and storing the first S-NSSAI into a second NSSAI in the storage.