Jul 25, 2024 · In 5G, UE registration is a critical process that establishes the UE’s presence on the network, authorizes it for services, and enables mobility tracking. This article details the general registration flow and highlights key technical aspects.

When a UE (User Equipment) specifies an AMF (Access and Mobility Management Function) in the RRC Connection Complete message, it typically indicates that the UE has a prior association with this AMF.

Feb 25, 2023 · The primary function of AMF is to establish and manage the connection between the user equipment (UE) and the core network. This involves authenticating and authorizing the user, establishing the security context, and allocating the appropriate resources to the UE.

Oct 29, 2021 · In the 5G network, the AMF offers services to the other AMF, PCF, NSSF, NRF, NEF, UDM, and AF via the Namf service-based interface (see 3GPP TS 23.501 and 3GPP TS 23.502).

Jan 5, 2023 · Performing the role of access point to the 5G core, thereby terminating RAN control plane and UE traffic originating on either the N1 or N2 reference interface, the AMF implements NAS ciphering and integrity protection algorithms.

Sep 29, 2022 · The AMF is an integral component of the 5GCN, enabling the management of Registration, Reachability, Connection, and Mobility of UE. The AMF also coordinates network handovers between base stations and provides essential security and authorisation capabilities.

Explore the functions of 5G NR network nodes, including AMF, UPF, SMF, PCF, UDM, DN, AUSF, and AF, as defined in 3GPP specifications.

Jul 8, 2023 · 本文介绍了5G网络核心网的多个功能模块，包括AMF的接入和移动性管理、SMF的会话管理、AUSF的认证、UPF的用户面功能等，还阐述了各模块的具体作用及与4G相关功能的类比，为理解5G网络架构提供了参考。 摘要生成于 C知道 ，由 DeepSeek-R1 满血版支持， 前往体验 > Access and Mobility Management Function，接入和移动性管理功能，执行注册、连接、可达性、移动性管理。 为UE和SMF提供会话管理消息传输通道，为用户接入时提供认证、鉴权功 …

AMF (Access and Mobility Management Function): The AMF is responsible for managing user access to the 5G core network. It is the first point of contact for the User Equipment (UE) and initiates the authentication process. The AMF receives the initial authentication information from the UE and forwards it to the AUSF for verification.

UE连接到网络中使用一个唯一的N1 NAS连接，唯一的N1终结点位于AMF。 UE的注册管理，连接管理，和会话管理相关的消息和流程都使用这个唯一的N1 NAS连接。