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

SMF Interaction with UPF: The SMF interacts with the User Plane Function (UPF) to set up the necessary user plane resources. The UPF is responsible for handling user data traffic and routing it appropriately.

While the user plane includes the UPF, which performs inter-networking between the 5G network, and the data network. And the UPF applies the session management related parameters received from the SMF to the PDU session of the UE.

Jan 31, 2025 · As specified in 3GPP TS 23.501, the SMF supports the following functionality: Handles session management. For example, session establishment, modification and release, including the tunnel between the User Plane Function (UPF) and the access network (AN).

Dec 29, 2022 · The 5G Session Management Function (SMF) is a critical 5G core component that performs a fundamental role in the 5G Service-Based Architecture (SBA).

Jan 25, 2023 · SMF in 5G Core (5GC) supports the following key functionalities: Secure exposure: The NEF supports the secure exposure of network functions capabilities and events to third parties, such as application functions, by authenticating and …

Apr 6, 2023 · In 5G, SMF stands for “Session Management Function.” It is a core network element responsible for managing the sessions between user devices and the network. Section 6.2.2 of 3GPP’s Technical Specification 23.501 provides a detailed description of …

Dec 8, 2022 · The 5G User Plane Function (UPF) is a fundamental component of the 3GPP’s New Radio (NR) mobile core infrastructure system architecture. The UPF represents the data plane evolution of a Control and User Plane Separation (CUPS) strategy, first introduced as an extension to existing 4G/LTE Evolved Packet Cores (EPCs) by the 3GPP in their ...

Jan 26, 2021 · SMF selection. UPF Functions in 5G: Again in 5G, there will be no SGW (Serving Gateway). So, Here we have UPF (User Plane Function). The UPF will perform the following main functions: Anchor point for Intra/Inter-RAT mobility (when applicable). External PDU session point of interconnect to Data Network. Packet routing & forwarding.

PDU Session management requires SMF to complete signalling towards the UE, Base Station and User Plane Function (UPF). SMF uses Non Access Stratum (NAS) signalling messages to communicate with the UE. Both the base station and AMF act as transparent routers for these messages which are relayed between the SMF and UE.