name: 5G-CRG
full_form: 5G Core Registration Management
context: The requirements and procedures on the UE related to subscriber privacy in clauses 5.2.5, 6.12 and Annex C are applicable for the 5G-RG. NOTE 1: The requirements and procedures on the UE related to subscriber privacy in clauses 5.2.5, 6.12 and Annex C are not applicable for the FG-RG. NOTE 2: When the SUPI contains a GCI, the 5G-CRG can use the null scheme to construct the SUCI. For a W-AGF representing an FN-RG, the null scheme shall be used to construct the SUCI as described in clauses 4.7.3 and 4.7.4 in TS 23.316[ Wireless and wireline convergence access support for the 5G System  (5GS) ]  [79].
description: The 5G Core Registration Management (5G-CRG) is a network function within the 5G core architecture that plays a crucial role in managing subscriber privacy, particularly when it comes to wireline access. It is responsible for handling the construction of the SUCI (Serving and Universal Confidentiality Information) using the null scheme, especially when the SUPI (Subscriber Permanent Identifier) contains a GCI (Global Cell Identity). This function ensures that the requirements and procedures related to subscriber privacy are met, as outlined in clauses 5.2.5, 6.12, and Annex C of the 3GPP TS 33.501 specification.
explanation: The 5G-CRG is classified as a Network Function because it serves as a key component in managing core network operations related to subscriber privacy, specifically for wireline access scenarios. Its role in constructing SUCI using the null scheme and ensuring compliance with specified clauses aligns with the responsibilities of a network function within the 3GPP's security architecture and procedures for the 5G System.
section_title: 7B.5 Subscriber privacy for wireline access
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