Section: 4.20 UE Parameters Update via UDM Control Plane Procedure 4.20.1 General
Content: The purpose of the control plane solution for update of UE parameters is to allow the HPLMN, SNPN, or CH to update the UE with a specific set of parameters, generated and stored in the UDM, by delivering protected UDM Update Data via NAS signalling. The HPLMN, SNPN, or CH updates such parameters based on the operator policies. The UDM Update Data that the UDM delivers to the UE may contain: - one or more UE parameters including: - the updated Default Configured NSSAI (final consumer of the parameter is the ME); - the updated Routing Indicator Data (final consumer of the parameter is the USIM when the related credential is stored in the USIM, i.e. for PLMN or SNPN credentials; or final consumer of the parameter is the ME when the related credential is stored in the ME, i.e. for SNPN credentials); - indication of whether disaster roaming is enabled in the UE if UE MINT support indicator is received or UE is registered for Disaster Roaming service currently; and - indication of 'applicability of "lists of PLMN(s) to be used in disaster condition" provided by a VPLMN' if UE MINT support indicator is received or UE is registered for Disaster Roaming service currently. - a "UE acknowledgement requested" indication. - a "re-registration requested" indication.