5G • Core Network
Nudr Interface
UDR Service-Based Interface
RESTful service interface exposed by UDR providing structured database CRUD operations to UDM, PCF, and NEF.
Technical Explanation
Exposed over HTTP/2, Nudr_DataRepository provides standardized CRUD access to: (1) Subscription Data for UDM, (2) Policy Data for PCF, (3) Structured Data for Exposure via NEF, and (4) Application Data. Decoupling storage into UDR makes all other 5GC NFs completely stateless.
Key Functions
- Provides unified database read/write access for UDM, PCF, and NEF
- Renders processing NFs completely stateless for effortless cloud scaling
- Standardizes storage of subscriber profiles, policy rules, and exposure data
Specifications
3GPP TS 29.504
Interfaces
NudrSBI
Related 5G Concepts
Want to memorize 5G concepts like this one?
Study it with SuperMemo SM-2 spaced repetition flashcards.