Terminal apparatus, core network apparatus, and communication control method
View Patent ↗Provided is a communication measure for registering information about a terminal apparatus in various apparatuses, such as a control apparatus and a terminal apparatus, included in a communication system in which a protocol used for registration management or registration information management for a mobile communication service is shared, based on the states of the various apparatuses. Also provided is a communication control measure for updating the information about the terminal apparatus registered in the various apparatuses. Thus, there are provided, in a communication system in which a protocol used for registration management or registration information management for a mobile communication service is shared, a measure for registration management based on the states of various apparatuses included in the communication system, such as a control apparatus and a terminal apparatus, and a realization measure for determining post-registration behavior.
1. A User Equipment (UE) comprising:
receiving circuitry configured to:
receive first identification information or second identification information from an Access and Mobility Management Function (AMF), and
control circuitry configured to:
add a Single Network Slice Selection Assistance Information (S-NSSAI) in a S-NSSAI list in a case that the first identification information is received, and
add the S-NSSAI in the S-NSSAI list in a case that the second identification information is received,
wherein
the first identification information indicates that the S-NSSAI is not available in a current Public Land Mobile Network (PLMN), and
the second identification information indicates that the S-NSSAI is not available in a current registration area.
2. A communication method performed by a User Equipment (UE), the communication method comprising:
receiving first identification information or second identification information from an Access and Mobility Management Function (AMF),
adding a Single Network Slice Selection Assistance Information (S-NSSAI) in a S-NSSAI list in a case that the first identification information is received, and
adding the S-NSSAI in the S-NSSAI list in a case that the second identification information is received,
wherein
the first identification information indicates that the S-NSSAI is not available in a current Public Land Mobile Network (PLMN), and
the second identification information indicates that the S-NSSAI is not available in a current registration area.
3. The UE according to claim 1 , wherein
the first identification information is information indicating a rejection cause for the current PLMN, and
the second identification information is information indicating a rejection cause for the current registration area.
4. The communication method according to claim 2 , wherein
the first identification information is information indicating a rejection cause for the current PLMN, and
the second identification information is information indicating a rejection cause for the current registration area.
5. The UE according to claim 1 , wherein
the S-NSSAI list is comprised of S-NSSAIs which are not used in the current PLMN or the current registration area.
6. The communication method according to claim 2 , wherein
the S-NSSAI list is comprised of S-NSSAIs which are not used in the current PLMN or the current registration area.