Topic explorer

connecting

Reviewed semantic catalogue · 2026-09-30. Records with reviewed release bounds are evaluated against Rel-8; 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 Mobility

available from Rel-15 · not in Rel-8

Mobility architecture and procedures spanning NAS, RRC, NGAP and XnAP.

ArchitectureProcedureNASRRCNGAPXnAP

Open feature lineage →

Topic stack

5GS Mobility

Architecture

Procedure

NAS

RRC

NGAP

XnAP

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 ↗