curatedreviewedreviewed mapping begins in Rel-16

Feature lineage · Positioning

Location services, LPP and NR positioning protocol relationships.

Reviewed topic evidence ↗Topic explorer →Ask Atlas →

Mapped specs4

Explicit stage labels0

Inferred orientations4

Relationships2

Connected WIs13

Rel-15 CR context50

Layer 1

System architecture & procedures / Stage 2 orientation

1 spec

TS 23.273

5G System (5GS) Location Services (LCS); Stage 2

S2 · Rel-16

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

Layer 2

RAN / radio realization

3 specs

TS 37.355

LTE Positioning Protocol (LPP)

R2 · Rel-15

inferredOrientation inferred from the 37-series; this is not an official 3GPP stage assignment.

TS 38.455

NG-RAN; NR Positioning Protocol A (NRPPa)

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.

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.

5GS_Ph1Rel-15 · connected · 97%

3GPP ↗

LCS_LTE_acc_enhRel-15 · connected · 100%

3GPP ↗

LCS_LTE_acc_enh-CoreRel-15 · connected · 100%

3GPP ↗

LTE_1024QAM_DL-CoreRel-15 · connected · 99%

3GPP ↗

LTE_5GCN_connect-CoreRel-15 · connected · 100%

3GPP ↗

LTE_unlic-CoreRel-15 · connected · 99%

3GPP ↗

NR_newRATRel-15 · connected · 100%

3GPP ↗

NR_newRAT-CoreRel-15 · connected · 100%

3GPP ↗

LTE_feMTC-CoreRel-14 · connected · 100%

3GPP ↗

NB_IOTenh-CoreRel-14 · connected · 100%

3GPP ↗

TEI14Rel-14 · connected · 100%

3GPP ↗

LCS_BDS-LTE-CoreRel-12 · connected · 100%

3GPP ↗

Cross-spec traceability

Release-valid relationships

38.455positioning signalling for23.273

curatedreviewedevidence ↗

37.355positioning protocol for23.273

curatedreviewedevidence ↗

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-15 context

CR activity across mapped specs

Context only: these CRs target mapped specifications in Rel-15; they are not automatically attributed to the feature.

37.355 · CR 0254

Correction to periodic reporting

not pursued

37.355 · CR 0277

Correction of A-GNSS Periodical retrival of Assistance Data

not pursued

37.355 · CR 0279

Correction of hanging ASN.1 code after END

revised

37.355 · CR 0279 rev.1

Correction of hanging ASN.1 code after END

approved

37.355 · CR 0285

Correction of A-GNSS Assistance Data RTK Observation

not pursued

37.355 · CR 0290

Correction to the basic production for positioning AD broadcast-R15

not pursued

37.355 · CR 0298

Correction to need code for DL LPP message-R15

revised

37.355 · CR 0298 rev.1

Correction to need code for DL LPP message-R15

revised

37.355 · CR 0298 rev.2

Correction to the need code for downlink LPP message

approved

37.355 · CR 0314

Corrections on the conditional presence tag clarification for Uplink LPP message

not treated

37.355 · CR 0316

Correction on ProvideCapabilities and ProvideLocationInformation

not pursued

37.355 · CR 0324

Correction on LPP message delivery

not pursued

37.355 · CR 0328

Corretion on the object identifier of LPP ASN.1 for R15

revised

37.355 · CR 0328 rev.1

Correction on the object identifier of LPP ASN.1 for R15

approved

37.355 · CR 0368

Correction to need code in posSIB_R15

not pursued

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 →