Topic explorer

connecting

Reviewed semantic catalogue · 2026-09-30. Records with reviewed release bounds are evaluated against Rel-20; unbounded records remain curated orientation metadata rather than guessed release claims. Coverage ↗

Topic Explorer

Navigate concepts that cut across series and WGs

Atlas taxonomy

NG-RAN Functional Split

Rel-15+ · active in Rel-20

gNB-CU-CP, gNB-CU-UP and gNB-DU architecture with F1 and E1 control relationships.

CU-CPCU-UPDUF1E1User plane

Open feature lineage →

Topic stack

NG-RAN Functional Split

CU-CP

CU-UP

User plane

Trust model

Every relationship has provenance

✓ official◇ parsed● curated◌ inferred

Official = 3GPP metadata. Parsed = deterministic extraction. Curated = reviewed Atlas classification. Inferred = machine suggestion requiring review.

Reviewed semantic coverage ↗