name: AU
full_form: Access Unit
context: the UEâs authentication capabilities. Furthermore, the network should select an authentication protocol from those supported by the slice to use, if the UE supports multiple authentication protocols. The figure below illustrates AUSF selection and authentication protocol selection in an attach procedure. Figure 5.8.4.9.2-1 AU selection during attach The description of above procedure is as below: A UE sends an attach request to SEAF. The request contains the UEâs authentication capabilities, i.e., the authentication protocols the UE supports. SEAF sends an AU selection request to SPCF. The request contains the UEâs authentication capabilities. NOTE: Please refer to clause 5.2.1.2 for SPCF definition. SPCF selects an AU considering the UEâs authentication capabilities. If the UEâs authentication capabilities include multiple authentication protocols, SPCF needs to select a protocol as well. SPCF returns the selected AUSFâs ID to SEAF. With selected AUSFâs ID, SEAF forwards the UEâs
description: The Access Unit (AU) is a network function responsible for managing user authentication and protocol selection in the 5G core network. It interacts with other network functions such as SPCF and SEAF to facilitate secure access and mobility of user equipment.
explanation: AU is classified as a Network Function because it performs specific tasks within the network, including user authentication, protocol management, and communication with other network elements like SPCF and SEAF.
section_title: 5.8.4.9.2 	Security mechanism differentiation in authentication
biotag_Context: O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Device,O,O,O,O,O,O,O,O,B-Network Function,O,O,O,O,O,O,O,O,O,O,O,B-Network Function,O,O,O,O,O,O,O,O,O,O,O,O,B-Device,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Device,O,B-Network Function,O,O,B-Network Function,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Network Function,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Parameter,O,O,O,O,O,O,B-Network Function,O,O,O
biotag_Description: O,B-Network Function,I-Network Function,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Technology,O,O,O,O,O,O,O,O,O,O,O,O,B-Network Function,O,O,O,O,O,O,O,O,O