curatedreviewedreviewed from Rel-17

Feature lineage · Non-Terrestrial Networks

Satellite and other non-terrestrial access integrated with NR and 5GS.

Reviewed topic evidence ↗Topic explorer →Ask Atlas →

Mapped specs6

Explicit stage labels0

Inferred orientations6

Relationships6

Connected WIs100

Rel-98 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

RAN / radio realization

4 specs

TS 38.300

NR; NR and NG-RAN Overall description; Stage-2

R2 · 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.

TS 38.104

NR; Base Station (BS) radio transmission and reception

R4 · Rel-15

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

TS 38.321

NR; Medium Access Control (MAC) protocol specification

R2 · Rel-15

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

Primary feature evidence

Topic source Work Item

NR_NTN_solutions

Solutions for NR to support non-terrestrial networks (NTN)

Rel-17 · PCG approved · WG not indexed · Work Plan 100%

3GPP source ↗Official Work Plan snapshot ↗

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.

5GSAT_Ph4Rel-20 · connected · 69%

3GPP ↗

5GSAT_Ph4-ARCRel-20 · connected · 100%

3GPP ↗

AIML_CN_Ph2-ARCRel-20 · connected · 100%

3GPP ↗

AdNRM_Ph4-OAMRel-20 · connected · 90%

3GPP ↗

AmbientIoT_Ph2-ARCRel-20 · connected · 95%

3GPP ↗

CPAS-CTRel-20 · connected · 90%

3GPP ↗

EnergySys_Ph2-ARCRel-20 · connected · 100%

3GPP ↗

FS_EnergySys_Ph2Rel-20 · connected · 100%

3GPP ↗

NG_RTC_Ph3-ARCRel-20 · connected · 99%

3GPP ↗

NR_1500MHz_JPRel-20 · connected · 100%

3GPP ↗

NR_1500MHz_JP-CoreRel-20 · connected · 100%

3GPP ↗

NR_40GHz_EESSprot_PC1-CoreRel-20 · connected · 100%

3GPP ↗

Cross-spec traceability

Release-valid relationships

23.502stage realization of23.501

curatedreviewed

38.331procedure component38.300

curatedreviewed

38.331radio procedure component23.502

curatedreviewedevidence ↗

38.300ntn access context for23.501

curatedreviewedevidence ↗

38.331ntn radio control for23.501

curatedreviewedevidence ↗

38.321ntn mac realization of38.300

curatedreviewedevidence ↗

Primary WI evolution

Change Requests linked to the primary Work Item

23.501 · CR 5495 rev.1

Access restrictions for satellite access in the context of 5GC-EPC interworking

Rel-19 · approved3GPP CR ↗

23.501 · CR 5495

Access restrictions for satellite access in the context of 5GC-EPC interworking

Rel-19 · revised

38.101-5 · CR 0179

R19 CR for 38.101-5 to modify the REFSENs Table 7.3.2-1

Rel-19 · postponed

38.331 · CR 5366 rev.5

Corrections on eventD1/D2 and condEventD1/D2/T1

Rel-18 · approved3GPP CR ↗

38.181 · CR 0060

(NR_NTN_solutions) Correction of reference to Suspended version of ITU-R SM.329 Recommendation

Rel-18 · approved3GPP CR ↗

38.141-2 · CR 0621

(NR_NTN_solutions)CR for TS38.141-2: Adding HAPS abbreviation and definition of HAPS BS class for conformance requirements

Rel-18 · approved3GPP CR ↗

38.141-1 · CR 0487

(NR_NTN_solutions)CR for TS38.141-1: Adding HAPS abbreviation and definition of HAPS BS class for conformance requirements

Rel-18 · approved3GPP CR ↗

23.501 · CR 5494 rev.2

Access restrictions for satellite access in the context of 5GC-EPC interworking

Rel-18 · approved3GPP CR ↗

38.331 · CR 4962

Clarification on parallel lists in MeasObjectNR

Rel-18 · approved3GPP CR ↗

38.101-5 · CR 0078 rev.1

Clarification for applicability of DSS for NTN FR1 bands

Rel-18 · approved3GPP CR ↗

38.214 · CR 0594

Rel-17 editorial corrections for TS 38.214 – mirror to Rel-18

Rel-18 · approved3GPP CR ↗

38.108 · CR 0058

Clarification for applicability of DSS for NTN FR1 bands

Rel-18 · approved3GPP CR ↗

38.101-5 · CR 0052

Clarification for the Pi/2 BPSK modulation

Rel-18 · approved3GPP CR ↗

38.101-5 · CR 0035 rev.1

Clarifications to 38.101-5 (Rel-18)

Rel-18 · approved3GPP CR ↗

38.133 · CR 3598

[NR_NTN_Solutions] CR 38.133 (Cat. A) on Time and Location Based Measurement Initiation

Rel-18 · approved3GPP CR ↗

Rel-98 context

CR activity across mapped specs

Context only: these CRs target mapped specifications in Rel-98; they are not automatically attributed to the feature.

No CR activity targeting the mapped specifications is indexed for Rel-98.

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 →