name: CH
full_form: Credentials Holder
context: Summary based on the input provided by Ericsson in SP-220584. The support of non-public networks (NPN) was introduced in Rel-16 by the WI Vertical_LAN with UID 830042. Deployments of NPN to provide coverage within a specific geographic area for non-public use is a key demand of emerging 5G applications and verticals. This Rel-17 work item enables the four following enhancements: Support for accessing an SNPN using credentials from a Credential Holder (CH): A UE can be configured with user or CH controlled prioritized list of information, SNPN identifiers or Group IDs for Network selection (GINs), enabling the UE to discover SNPNs supporting access using credentials from a CH. If the UE selects and accesses the SNPN, the CH is involved in the primary authentication and for authorizing the access to the SNPN. The CH can either include 5GC NFs e.g. AUSF and UDM (if the CH is an SNPN or a PLMN) or include a AAA server. Support for Onboarding of UEs: Onboarding of UEs allows the UE to
description: The Credentials Holder (CH) is a network function that stores and manages credentials used for accessing non-public networks (NPNs). It plays a crucial role in primary authentication and authorizing access to NPNs, potentially involving other network functions like AUSF and UDM or external AAA servers.
explanation: The context explicitly mentions the Credentials Holder as an entity involved in the authentication and authorization process for accessing non-public networks. This indicates that CH is a Network Function responsible for managing credentials and interacting with other network components, fitting the definition of a Network Function within the 3GPP specification.
section_title: 6.2.3.1	Enhanced support of Non-Public Networks
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