2 Overview

Oracle 5G UDM, implemented as a cloud native function, offers a combination of the AUSF and UDM NF's as detailed out by 3GPP.

• The Authentication Server Function (AUSF) supports authentication for 3GPP access as specified in 3GPP TS 33.501.
• The Unified Data Management Function (UDM) supports following functionalities:
  • Generate 3GPP 5G AKA Authentication Vectors
  • User Identification Handling (e.g. storage and management of SUPI for each subscriber in the 5G system)
  • UE's Serving NF Registration Management (e.g. storing the serving AMF for UE, storing the serving SMF for UE's PDU Session)
  • Supports retrieval of the UE's individual subscription data for slice selection, AM data, SM data, SmfSelection data, smf ue context data and supports acknowledgment of SoR and UpU function
  • Supports subscription based on data change notification service

Oracle 5G UDM Solution

• Encapsulates the AUSF and UDM functionalities under a common Network Function.
• Provides a HTTP2 based RESTful interface for other NFs to consume the services offered.
• Uses Helm chart for all configurations and deployment.
• Runs in stateless mode of offloading storage of all information externally in 5G UDR.
  • Uses Nudr services as specified in 3GPP TS 29.504 and 3GPP TS 29.505 to retrieve required data from the UDR
  • Processes the incoming request includes updating data in the UDR whenever applicable
• Leverages a common Oracle Communications Cloud Native Framework
• Compliant to 3GPP Release 15 specification
• Has tiered architecture providing separation between the connectivity, business logic and data layers
• Uses MySQL NDB Cluster as the backend database in the Data Tier
• Registers with NRF in the 5G network, so the other NFs in the network can discover AUSF/UDM through NRF and also enables discovery of UDR(s) from NRF

For more information on UDM services, refer to Cloud Native Unified Data Management (UDM) User's Guide.