{{  :control_plane_functions.png?400  }}

The control plane functions and essential responsibilities of the 5G core network include:

  - Access and Mobility Management Function (AMF):
      - Responsible for managing user access, mobility, and authentication.
  - Session Management Function (SMF)
      - Manages the establishment, modification, and release of sessions for user data.
  - Policy Control Function (PCF)
      - Provides policy decisions and rules for network resources, charging and quality of service (QoS).
  - Application Function (AF)
      - Interacts with external applications and services to provide 5G network capabilities.
  - Authentication Server Function (AUSF)
      - Authenticates and authorizes users for network access.
  - Security Edge Protection Proxy (SEPP)
      - Protects the 5G core network from external security threats.
  - Network Exposure Function (NEF)
      - Exposes network capabilities and services to external entities.
  - Network Function Repository Function (NRF)
      - Manages the registration, discovery, and authorization of network functions.
  - Unified Data Management (UDM)
      - Manages user data, including subscription, authentication and authorization information.
  - Unified Data Repository (UDR)
      - Stores and manages user data.

Bibliography:

  - [[https://mobilepacketcore.com/glossary/service-based-interfaces-sbis-5g-network/|https://mobilepacketcore.com/glossary/service-based-interfaces-sbis-5g-network/]]