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

Positioning

available from Rel-16 · not in Rel-15

Location services, LPP and NR positioning protocol relationships.

LCSLPPNRPPaRRC

Open feature lineage →

Topic stack

Positioning

LCS

LPP

NRPPa

RRC

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 ↗