Topic explorer

connecting

Reviewed semantic catalogue · 2026-09-30. Records with reviewed release bounds are evaluated against Rel-99; 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 Session Management

Rel-15+ · active in Rel-99

PDU Session lifecycle, policy/QoS, SMF services and user-plane realization.

ArchitectureProcedureNASSBINGAPUser plane

Open feature lineage →

Topic stack

5GS Session Management

Architecture

Procedure

NAS

SBI

NGAP

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 ↗