curatedreviewedreviewed mapping begins in Rel-15

Feature lineage · 5GS Registration

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

Reviewed topic evidence ↗Topic explorer →Ask Atlas →

Mapped specs6

Explicit stage labels0

Inferred orientations6

Relationships4

Connected WIs1

Rel-10 CR context0

Layer 1

System architecture & procedures / Stage 2 orientation

2 specs

TS 23.501

System architecture for the 5G System (5GS)

S2 · Rel-15

inferredOrientation inferred from the 23-series; this is not an official 3GPP stage assignment.

TS 23.502

Procedures for the 5G System (5GS)

S2 · Rel-15

inferredOrientation inferred from the 23-series; this is not an official 3GPP stage assignment.

Layer 2

UE protocol realization

1 spec

TS 24.501

Non-Access-Stratum (NAS) protocol for 5G System (5GS); Stage 3

C1 · Rel-15

inferredOrientation inferred from the 24-series; this is not an official 3GPP stage assignment.

Layer 3

RAN / radio realization

2 specs

TS 38.413

NG-RAN; NG Application Protocol (NGAP)

R3 · Rel-15

inferredOrientation inferred from the 38-series; this is not an official 3GPP stage assignment.

TS 38.331

NR; Radio Resource Control (RRC); Protocol specification

R2 · Rel-15

inferredOrientation inferred from the 38-series; this is not an official 3GPP stage assignment.

Layer 4

Security

1 spec

TS 33.501

Security architecture and procedures for 5G System

S3 · Rel-15

inferredOrientation inferred from the 33-series; this is not an official 3GPP stage assignment.

Primary feature evidence

Topic source Work Item

The reviewed topic source is not an indexed Work Item record. The source link above remains the primary evidence anchor.

Connected work

Work Items touching mapped specs

These Work Items share one or more mapped specifications. Atlas does not automatically claim that every connected Work Item defines this feature.

Limbo- · connected · 0%

3GPP ↗

Cross-spec traceability

Release-valid relationships

23.502stage realization of23.501

curatedreviewed

24.501procedure component23.502

curatedreviewed

33.501security for23.502

curatedreviewed

38.413procedure component23.502

curatedreviewed

Primary WI evolution

Change Requests linked to the primary Work Item

No indexed CRs are linked to the primary Work Item at or before this release.

Rel-10 context

CR activity across mapped specs

Context only: these CRs target mapped specifications in Rel-10; they are not automatically attributed to the feature.

No CR activity targeting the mapped specifications is indexed for Rel-10.

Traceability limits

What this lineage is not claiming

The reviewed topic-to-specification mapping is Atlas-curated and non-normative even when its source is an official 3GPP record.
When an explicit stage classification is unavailable, specification layers are inferred from the TS/TR series and are labelled inferred rather than presented as official 3GPP stage assignments.
Connected Work Items and release-context Change Requests share mapped specifications; only the topic source Work Item is treated as primary evidence for the reviewed topic mapping.
This is traceability evidence and navigation, not a clause-by-clause normative feature definition.

Lineage JSON ↗Change Radar →