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5gc_network_functions [2025/03/29 13:33] – kkaragoz5gc_network_functions [2025/03/29 13:35] (current) – kkaragoz
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   * Manages charging, billing, and usage reporting.   * Manages charging, billing, and usage reporting.
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 +Control Plane Functions
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 +AMF - Access and Mobility Management Function
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 +  * Manages device registration, mobility and connection states.
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 +SMF - Session Management Function
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 +  * Handles session establishment, IP allocation, and UPF control.
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 +PCF - Policy Control Function
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 +  * Enforces dynamic policies for QoS, slicing, and charging.
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 +UDM - Unified Data Management
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 +  * Manages subscriber data (authentication, profiles)
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 +AUSF - Authentication Server Function
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 +  * Performs 5G-AKA authentication for devices.
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 +NSSF - Network Slice Selection Function
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 +  * Assigns network slices based on device/service requirements.
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 +NEF - Network Exposure Function
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 +  * Exposes network APIs to third-party applications (e.g. IoT, edge computing).
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 +NRF - Network Repository Function
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 +  * Service discovery and registration for 5GC functions.
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 +SEPP - Security Edge Protection Proxy
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 +  * Secures signaling between different operator networks (inter-PLMN).
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 +Analytics & Specialized Functions
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 +NWDAF - Network Data Analytics Function
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 +  * Provides AI/ML-driven insights (e.g. traffic prediction, anomaly detection).
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 +SMSF - SMS Function
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 +  * Supports SMS services over 5G.
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 +LMF - Location Management Function:
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 +  * Determines device location (e.g. emergency services)
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 +AF - Application Function:
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 +  * Represents third-party applications (e.g. video streaming, IoT) that interact with 5GC via the NEF to request services (e.g. QoS adjustments).
 +  * AF is critical for enabling network-aware applications (e.g. adjusting bandwidth for a video call)
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 +GMLC - Gateway Mobile Location Center:
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 +  * Retrieves device location for external application (e.g. emergency services, logistics). While inherited from LTE, it interfaces with 5GC's LMF for location data.
 +  * GMLC bridges 5GC with legacy location services but relies on LMF for actual positioning in 5G.
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 +5G-EIR - 5G Equipment Identity Register
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 +  * Validates device identities (IMEI) to block unauthorized/stolen devices.
 +  * 5G-EIR replaces LTE's EIR but serves a similar anti-fraud role.
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 +N3IWF - Non-3GPP Interworking Function
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 +  * Connects untrusted non-3GPP networks (e.g., Wi-Fi, satellite) to 5GC via secure tunnels (IPsec) and interfaces with AMF/UPF.
  
  
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