17F Restoration of data in the UCMF

23.0073GPPRelease 18Restoration proceduresTS

17F.1 Restart of the UCMF

The UCMF is assumed as a front-end application function with a persistent database connected. The UCMF may restart but all dictionary mapping information between UE Radio Capability and UE Radio Capability IDs can be retained, hence, in this case, a UCMF shall not update its Recovery Time Stamp if the UCMF has restarted.

Editor’ Note: The handling of Version ID within PLMN assigned UE Radio Capability IDs at UCMF Restart is ffs.

17F.2 Restart of the MME

When a UCMF detects that a peer MME has failed with or without restart (relying on restart counter as specified in clause 19B "URCMP based restart procedures" or implementation e.g. a preconfigured path failure timer as specified in clause 20 "Path management procedures"), it shall delete the subscription created by the failed MME.