name: N3IWF
full_form: Non-3GPP Interworking Function
context: The Deregistration procedure via trusted non-3GPP access shall be supported as specified in clause 4.12.3 for the untrusted non-3GPP access with the following modifications: - The untrusted non-3GPP access is substituted by a trusted non-3GPP access point (TNAP). - The N3IWF is substituted by the TNGF. - If the UE has reserved QoS resources over non-3GPP access by using the Additional QoS Information (specified in clause 4.12a.5), then the UE shall release these resources.
description: The Non-3GPP Interworking Function (N3IWF) is a network function that enables interworking between 3GPP and non-3GPP access networks. It plays a crucial role in managing the interaction between these different types of networks, ensuring seamless communication and resource allocation for user equipment (UE). In the context of trusted non-3GPP access, N3IWF is involved in procedures such as deregistration, where it works in conjunction with other network functions to release reserved QoS resources.
explanation: N3IWF is classified as a Network Function because it facilitates communication and resource management between different types of access networks (3GPP and non-3GPP), aligning with the 3GPP's specifications for interworking and interoperability in the 5G system architecture.
section_title: 4.12a.3 Deregistration procedure for Trusted non-3GPP access
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