CNTC: Reproducible Certification for OCUDU 5G RAN | 3GPP, SCAS
CNTC RAN Certification provides a reproducible framework for verifying the conformance of 5G RAN deployments in CU/DU split mode, testing interfaces including N2, F1-C, E1, F1-U, and N3. The certification environment operates on a single Linux host and observes RRC and Access Stratum security activation by capturing IP link traffic, utilizing a software UE for end-to-end attachment procedures. Each RAN product class, O-CU-CP, O-CU-UP, and O-DU, is certified independently based on a defined set of requirements, with verdicts determined by wire captures, socket state, and process state, excluding product logs except for diagnostic purposes. Currently validated against OCUDU 5G RAN, the framework executed 58 Level-1 requirements, achieving certification for the O-DU class while identifying a security algorithm mismatch in the O-CU-CP and O-CU-UP classes. Requirements unable to be evaluated are marked as Not Applicable, and a certificate is only issued upon successful completion of all essential requirements for a given product class.