Topic explorer

connecting

Reviewed semantic catalogue · 2026-09-30. Records with reviewed release bounds are evaluated against Rel-15; unbounded records remain curated orientation metadata rather than guessed release claims. Coverage ↗

Topic Explorer

Navigate concepts that cut across series and WGs

Atlas taxonomy

5GS Registration

Rel-15+ · active in Rel-15

Registration state, NAS signalling, NGAP context and authentication across UE, NG-RAN and 5GC.

ArchitectureNASNGAPRRCSecurity

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Topic stack

5GS Registration

Architecture

NAS

NGAP

RRC

Security

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 ↗