Feature lineage › 5GS Registration Mapped specs 6
Explicit stage labels 0
Inferred orientations 6
Relationships 7
Connected WIs 17
Rel-15 CR context 50
Layer 1
System architecture & procedures / Stage 2 orientation 2 specs TS 23.501 System architecture for the 5G System (5GS)
S2 · Rel-15 inferred Orientation 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 inferred Orientation 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 inferred Orientation 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 inferred Orientation 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 inferred Orientation inferred from the 38-series; this is not an official 3GPP stage assignment.
TS 33.501 Security architecture and procedures for 5G System
S3 · Rel-15 inferred Orientation 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.
5GS_Ph1 Rel-15 · connected · 97%
Historical association · verification pending 3GPP ↗ 5GS_Ph1-CT Rel-15 · connected · 100%
3GPP ↗ 5GS_Ph1-SEC Rel-15 · connected · 100%
Historical association · verification pending 3GPP ↗ CAPIF-Sec Rel-15 · connected · 100%
3GPP ↗ FS_NSA Rel-15 · connected · 100%
3GPP ↗ LTE_1024QAM_DL-Core Rel-15 · connected · 99%
3GPP ↗ LTE_5GCN_connect-Core Rel-15 · connected · 100%
3GPP ↗ LTE_Aerial Rel-15 · connected · 99%
3GPP ↗ LTE_unlic-Core Rel-15 · connected · 99%
3GPP ↗ NETSLICE-5GTRACE Rel-15 · connected · 100%
3GPP ↗ NR_CPUP_Split Rel-15 · connected · 100%
3GPP ↗ NR_CPUP_Split-Core Rel-15 · connected · 100%
3GPP ↗ Cross-spec traceability
Release-valid relationships 23.502stage realization of 23.501
curated reviewed
24.501procedure component 23.502
curated reviewed
33.501security for 23.502
curated reviewed
38.413procedure component 23.502
curated reviewed
24.501stage3 realization of 23.501
38.331radio procedure component 23.502
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.
23.501 · CR 0002 Using NRF for UPF discovery
revised 23.501 · CR 0002 rev.1 Using NRF for UPF discovery
revised 23.501 · CR 0002 rev.2 Using NRF for UPF discovery
approved 23.501 · CR 0326 rev.2 Slicing information and RFSP
revised 23.501 · CR 0369 Averaging Window Resolution
merged 23.501 · CR 0523 rev.2 UE location report to the SMF by RAN in RRC Inactive State
withdrawn 23.501 · CR 4251 Requested S-NSSAI status clarification
noted 23.501 · CR 5042 Addressing packet loss and first packet delay for public safety UEs
noted 23.501 · CR 0003 Configuration information the UE may exchange with the SMF during the lifetime of a PDU session
revised 23.501 · CR 0003 rev.1 Configuration information the UE may exchange with the SMF during the lifetime of a PDU session
revised 23.501 · CR 0003 rev.2 Configuration information the UE may exchange with the SMF during the lifetime of a PDU session
approved 23.501 · CR 0004 Handling of MM back-off timer for N3GPP Access
approved 23.501 · CR 0005 Correction of the definitions of Allowed NSSAI and Configured NSSAI
approved 23.501 · CR 0006 Allowed NSSAI and Access Type
revised 23.501 · CR 0006 rev.1 Allowed NSSAI and Access Type
revised Candidate expansion · review required
Specifications Atlas may be missing from this topic Inferred only. These records are not part of the reviewed semantic catalogue. The ranking score orders structural evidence; it is not a probability or confidence value, and there is no automatic promotion action.
TS 36.331 Evolved Universal Terrestrial Radio Access (E-UTRA); Radio Resource Control (RRC); Protocol specification
R2 · Rel-8 inferred rank 175 moderate evidence
shared work item Shares Work Item NB_IOTenh-Core with mapped specifications
evidence ↗ shared work item Shares Work Item NR_newRAT with mapped specifications
evidence ↗ shared work item Shares Work Item LTE_1024QAM_DL-Core with mapped specifications
evidence ↗ shared work item Shares Work Item LTE_unlic-Core with mapped specifications
evidence ↗ shared work item Shares Work Item NR_newRAT-Core with mapped specifications
evidence ↗ shared work item Shares Work Item LTE_5GCN_connect-Core with mapped specifications
evidence ↗ shared work item Shares Work Item LTE_Aerial with mapped specifications
evidence ↗ TS 36.413 Evolved Universal Terrestrial Radio Access Network (E-UTRAN); S1 Application Protocol (S1AP)
R3 · Rel-8 inferred rank 150 moderate evidence
shared work item Shares Work Item NB_IOTenh-Core with mapped specifications
evidence ↗ shared work item Shares Work Item 5GS_Ph1 with mapped specifications
evidence ↗ shared work item Shares Work Item NR_newRAT with mapped specifications
evidence ↗ shared work item Shares Work Item NR_newRAT-Core with mapped specifications
evidence ↗ shared work item Shares Work Item LTE_Aerial with mapped specifications
evidence ↗ shared work item Shares Work Item NR_CPUP_Split with mapped specifications
evidence ↗ TS 36.300 Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Overall description; Stage 2
R2 · Rel-8 inferred rank 125 moderate evidence
shared work item Shares Work Item NB_IOTenh-Core with mapped specifications
evidence ↗ shared work item Shares Work Item LTE_1024QAM_DL-Core with mapped specifications
evidence ↗ shared work item Shares Work Item LTE_unlic-Core with mapped specifications
evidence ↗ shared work item Shares Work Item NR_newRAT-Core with mapped specifications
evidence ↗ shared work item Shares Work Item LTE_5GCN_connect-Core with mapped specifications
evidence ↗ TS 36.306 Evolved Universal Terrestrial Radio Access (E-UTRA); User Equipment (UE) radio access capabilities
R2 · Rel-8 inferred rank 125 moderate evidence
shared work item Shares Work Item NB_IOTenh-Core with mapped specifications
evidence ↗ shared work item Shares Work Item LTE_1024QAM_DL-Core with mapped specifications
evidence ↗ shared work item Shares Work Item LTE_unlic-Core with mapped specifications
evidence ↗ shared work item Shares Work Item NR_newRAT-Core with mapped specifications
evidence ↗ shared work item Shares Work Item LTE_5GCN_connect-Core with mapped specifications
evidence ↗ TS 36.423 Evolved Universal Terrestrial Radio Access Network (E-UTRAN); X2 Application Protocol (X2AP)
R3 · Rel-8 inferred rank 125 moderate evidence
shared work item Shares Work Item NB_IOTenh-Core with mapped specifications
evidence ↗ shared work item Shares Work Item NR_newRAT with mapped specifications
evidence ↗ shared work item Shares Work Item NR_newRAT-Core with mapped specifications
evidence ↗ shared work item Shares Work Item LTE_Aerial with mapped specifications
evidence ↗ shared work item Shares Work Item NR_CPUP_Split with mapped specifications
evidence ↗ TS 23.503 Policy and charging control framework for the 5G System (5GS); Stage 2
S2 · Rel-15 inferred rank 115 strong evidence
shared work item Shares Work Item DUMMY with mapped specifications
evidence ↗ shared work item Shares Work Item 5GS_Ph1 with mapped specifications
evidence ↗ shared work item Shares Work Item 5GS_Ph1-CT with mapped specifications
evidence ↗ shared work item Shares Work Item NETSLICE-5GTRACE with mapped specifications
evidence ↗ graph adjacency policy_for with mapped TS/TR 23.501
TS 29.503 5G System; Unified Data Management Services; Stage 3
C4 · Rel-15 inferred rank 100 moderate evidence
shared work item Shares Work Item DUMMY with mapped specifications
evidence ↗ shared work item Shares Work Item 5GS_Ph1 with mapped specifications
evidence ↗ shared work item Shares Work Item 5GS_Ph1-CT with mapped specifications
evidence ↗ shared work item Shares Work Item NETSLICE-5GTRACE with mapped specifications
evidence ↗ TS 29.507 5G System; Access and Mobility Policy Control Service; Stage 3
C3 · Rel-15 inferred rank 100 moderate evidence
shared work item Shares Work Item DUMMY with mapped specifications
evidence ↗ shared work item Shares Work Item 5GS_Ph1 with mapped specifications
evidence ↗ shared work item Shares Work Item 5GS_Ph1-CT with mapped specifications
evidence ↗ shared work item Shares Work Item NETSLICE-5GTRACE with mapped specifications
evidence ↗ TS 29.508 5G System; Session Management Event Exposure Service; Stage 3
C3 · Rel-15 inferred rank 100 moderate evidence
shared work item Shares Work Item DUMMY with mapped specifications
evidence ↗ shared work item Shares Work Item 5GS_Ph1 with mapped specifications
evidence ↗ shared work item Shares Work Item 5GS_Ph1-CT with mapped specifications
evidence ↗ shared work item Shares Work Item NETSLICE-5GTRACE with mapped specifications
evidence ↗ TS 29.571 5G System; Common Data Types for Service Based Interfaces; Stage 3
C4 · Rel-15 inferred rank 100 moderate evidence
shared work item Shares Work Item 5GS_Ph1 with mapped specifications
evidence ↗ shared work item Shares Work Item 5GS_Ph1-CT with mapped specifications
evidence ↗ shared work item Shares Work Item NR_newRAT-Core with mapped specifications
evidence ↗ shared work item Shares Work Item NETSLICE-5GTRACE with mapped specifications
evidence ↗ TS 36.101 Evolved Universal Terrestrial Radio Access (E-UTRA); User Equipment (UE) radio transmission and reception
R4 · Rel-8 inferred rank 100 moderate evidence
shared work item Shares Work Item NB_IOTenh-Core with mapped specifications
evidence ↗ shared work item Shares Work Item NR_newRAT with mapped specifications
evidence ↗ shared work item Shares Work Item LTE_unlic-Core with mapped specifications
evidence ↗ shared work item Shares Work Item NR_newRAT-Core with mapped specifications
evidence ↗ TS 36.133 Evolved Universal Terrestrial Radio Access (E-UTRA); Requirements for support of radio resource management
R4 · Rel-8 inferred rank 100 moderate evidence
shared work item Shares Work Item NB_IOTenh-Core with mapped specifications
evidence ↗ shared work item Shares Work Item NR_newRAT with mapped specifications
evidence ↗ shared work item Shares Work Item NR_newRAT-Core with mapped specifications
evidence ↗ shared work item Shares Work Item LTE_5GCN_connect-Core with mapped specifications
evidence ↗ 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.