name: AMF
full_form: Authentication Management Field
context: When an AMF receives a registration request from a UE, the AMF may need to reroute the request to another AMF because the AMF may not be able serve the UE. Figure 4.2-1 describes the registration procedure with AMF re-allocation specified in TS 23.502 [2]. Figure 4.2-1: Registration with AMF re-allocation 1. The UE sends a Registration Request (RR). Either a 5G-GUTI or a SUCI is included. 2. If a SUCI is received in the RR, this step is skipped. If a 5G-GUTI is received and if there is connectivity between the initial AMF and the old AMF assigning the 5G-GUTI, the AMF retrieves the UE context from the old AMF that assigned the 5G-GUTI. The old AMF may perform horizontal key derivation and send to the initial AMF the derived security context. 3. The initial AMF initiates a round of primary authentication if a SUCI is received in step 1 or if the context retrieval in step 2 fails or if local policy at the initial AMF requires primary authentication. 4. The initial AMF may send a Security
description: The Access and Mobility Management Function (AMF) is responsible for managing access and mobility of user equipment (UE) in the 5G core network. It handles user authentication, session management, and connection establishment, enabling smooth transitions of users across network regions.
explanation: AMF is classified as a Network Function based on its role in controlling UE access and mobility within the network, as highlighted by the context. The provided text from 3GPP TS 33.864 describes the AMF's involvement in registration procedures, including handling user authentication and retrieving UE context, which are key functions of a Network Function.
section_title: 4.2	Procedure of Registration with AMF re-allocation
biotag_Context: O,O,B-Network Function,O,O,O,O,O,O,O,O,B-Network Function,O,O,O,O,O,O,O,O,B-Network Function,O,O,B-Network Function,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Network Function,O,O,O,B-Specification,O,O,O,O,O,O,B-Network Function,O,O,O,B-Device,O,O,O,O,O,O,O,B-Parameter,O,O,B-Parameter,O,O,O,O,O,B-Parameter,O,O,O,O,O,O,O,O,O,O,O,B-Parameter,O,O,O,O,O,O,O,O,O,O,B-Network Function,O,O,O,B-Network Function,O,O,O,O,B-Network Function,O,O,B-Device,O,O,O,O,B-Network Function,O,O,O,O,O,O,B-Network Function,O,O,O,O,O,O,O,O,O,O,B-Network Function,O,O,O,O,O,O,O,B-Network Function,O,O,O,O,O,O,O,O,B-Parameter,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,B-Network Function,O,O,O,O
biotag_Description: O,B-Network Function,I-Network Function,I-Network Function,I-Network Function,I-Network Function,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,O,O,O,O,O,O,O