Unified Data Repository
The UDR is a converged repository of subscriber information and can be used to service a number of network functions. 1
- The 5G UDM can use the UDR to store and retrieve subscription data.
- Alternatively, the PCF (Policy Control Function) can use the UDR to store and retrieve policy related data.
It stores data grouped into distinct collections of subscription-related information2 :
- Subscription Data;
- Policy Data;
- Structured Data for Exposure;
- Application Data.
Its implementation by OpenAirInterface community can be found here: oai / cn5g / oai-cn5g-udr · GitLab (eurecom.fr)