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5g architecture ericsson

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1. Core Network (CN):

  • Service Management Function (SMF): The SMF is responsible for managing session establishment, modification, and termination. It handles the creation and management of data flows for user plane services.
  • Session Management Function (AMF): The AMF manages the mobility and session handling for the user equipment (UE).
  • User Plane Function (UPF): The UPF is responsible for the user plane processing, including packet routing and forwarding, as well as encapsulation/decapsulation for user data.

2. Radio Access Network (RAN):

  • gNodeB (gNB): The gNodeB is the 5G base station that connects to the core network. It is responsible for radio resource management, user plane processing, and connection mobility.
  • Centralized Unit (CU): The CU is responsible for the non-real-time processing of the user plane. It is separated into the CU-CP (Control Plane) and CU-UP (User Plane) functions.
  • Distributed Unit (DU): The DU handles real-time baseband processing for the user plane.

3. Network Functions:

  • Authentication and Key Management (AUSF): AUSF provides authentication and key management services.
  • Unified Data Management (UDM): UDM is responsible for managing user-related data, subscription information, and authentication.
  • Access and Mobility Management Function (AMF): AMF handles access and mobility management for the UE.
  • Network Slice Selection Function (NSSF): NSSF selects the appropriate network slice for a UE based on policy and subscription information.
  • Policy Control Function (PCF): PCF manages policy control decisions, such as QoS enforcement and flow control.

4. Interfaces:

  • N1 Interface: The N1 interface connects the UE to the gNB for the user plane.
  • N2 Interface: The N2 interface connects the gNB to the UPF for the user plane.
  • N3 Interface: The N3 interface connects the gNB to the UPF for the control plane.
  • N4 Interface: The N4 interface connects the UPF to the SMF for the user plane.

5. Network Slicing:

  • 5G introduces the concept of network slicing, where the network is logically divided into multiple virtual networks to meet the diverse requirements of different services and applications.

In Ericsson's implementation, there may be additional proprietary elements, optimizations, or features that enhance the performance or functionality of the 5G architecture. For the most accurate and up-to-date information, refer to Ericsson's official documentation or contact Ericsson directly.