Patent ID: 11882519
Assignee: MEDIATEK SINGAPORE PTE. LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 7:
8. An apparatus, comprising circuitry configured to:
upon a user equipment (UE) entering a visited public land mobile network (VPLMN), the UE having a first protocol data unit (PDU) session that is associated with a first home public land mobile network (HPLMN) single network slice selection assistance information (S-NSSAI), determine whether the UE has a first VPLMN S-NSSAI applicable in the VPLMN corresponding to the first HPLMN S-NSSAI; and
in response to the UE not having the first VPLMN S-NSSAI applicable in the VPLMN corresponding to the first HPLMN S-NSSAI, transmit a registration request message to the VPLMN, the registration request message including the first HPLMN S-NSSAI as a first mapped S-NSSAI for indicating a slice of the VPLMN to which the UE intends to register.