Layer 1
Requirements / Stage 1 orientation
TS 22.261
Service requirements for the 5G system
S1 · Rel-15inferredOrientation inferred from the 22-series; this is not an official 3GPP stage assignment.
curatedreviewedreviewed from Rel-18
Feature lineage · XR / Immersive Media
Extended-reality service requirements, media and QoS context.
Mapped specs4
Explicit stage labels0
Inferred orientations4
Relationships2
Connected WIs100
Rel-20 CR context50
1 spec
Layer 2
System architecture & procedures / Stage 2 orientation
TS 23.501
System architecture for the 5G System (5GS)
S2 · Rel-15inferredOrientation inferred from the 23-series; this is not an official 3GPP stage assignment.
TS 23.503
Policy and charging control framework for the 5G System (5GS); Stage 2
S2 · Rel-15inferredOrientation inferred from the 23-series; this is not an official 3GPP stage assignment.
Layer 3
Media
TS 26.114
IP Multimedia Subsystem (IMS); Multimedia Telephony; Media handling and interaction
S4 · Rel-7inferredOrientation inferred from the 26-series; this is not an official 3GPP stage assignment.
Primary feature evidence
Topic source Work Item
XRM
Architecture Enhancements for XR (Extended Reality) and media service
Rel-18 · PCG approved · WG not indexed · Work Plan 100%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 ↗5GSAT_Ph4-REQRel-20 · connected · 100%
3GPP ↗AIML_CN_Ph2-ARCRel-20 · connected · 100%
3GPP ↗AIML_IMS-MEDRel-20 · connected · 100%
3GPP ↗AdNRM_Ph4-OAMRel-20 · connected · 90%
3GPP ↗AmbientIoT_Ph2-ARCRel-20 · connected · 95%
3GPP ↗CombQoSRel-20 · connected · 100%
3GPP ↗EnergyServ_Ph2-REQRel-20 · connected · 100%
3GPP ↗EnergySys_Ph2-ARCRel-20 · connected · 100%
3GPP ↗FS_5GSAT_Ph4Rel-20 · connected · 100%
3GPP ↗FS_EnergySys_Ph2Rel-20 · connected · 100%
3GPP ↗Cross-spec traceability
Release-valid relationships
23.503policy for23.501curatedreviewed
23.501stage realization of22.261curatedreviewedevidence ↗
Primary WI evolution
Change Requests linked to the primary Work Item
29.513 · CR 0631 rev.1
Complete to the QoS flow binding and Miscellaneous Corrections
Rel-20 · approved3GPP CR ↗29.512 · CR 1487 rev.1
Correcting attribute name of the congestion threshold for uplink information
Rel-19 · approved3GPP CR ↗29.514 · CR 0818 rev.1
Corrections to the QosMonitoringReport data type
Rel-19 · approved3GPP CR ↗24.501 · CR 7088
Correction to PDU set based handling
Rel-19 · approved3GPP CR ↗29.514 · CR 0804 rev.1
Corrections to the congestReports
Rel-19 · approved3GPP CR ↗29.512 · CR 1425 rev.1
Correction to the maximum number of reference to QosMonitoringData
Rel-19 · approved3GPP CR ↗24.501 · CR 6991 rev.1
Term defined for "IP PDU session type" and minor fixes in ECN marking for L4S indication IE
Rel-19 · approved3GPP CR ↗29.281 · CR 0139 rev.2
PDU Set Information Container
Rel-19 · approved3GPP CR ↗29.512 · CR 1414 rev.1
Support of MDBV and average window in AQP contained in the PCC rule
Rel-19 · approved3GPP CR ↗29.522 · CR 1644 rev.1
Update Alternative QoS Parameter Set
Rel-19 · approved3GPP CR ↗29.522 · CR 1700 rev.1
Corrections on the feature name
Rel-19 · approved3GPP CR ↗29.122 · CR 0953 rev.1
Update Alternative QoS Parameter Set
Rel-19 · approved3GPP CR ↗29.514 · CR 0794 rev.1
Corrections on MDBV and average window in AQP
Rel-19 · approved3GPP CR ↗29.244 · CR 0979
Correction to End of Data Burst marking
Rel-19 · approved3GPP CR ↗29.122 · CR 0919 rev.4
Update Alternative QoS Parameter Set
Rel-19 · approved3GPP CR ↗Rel-20 context
CR activity across mapped specs
Context only: these CRs target mapped specifications in Rel-20; they are not automatically attributed to the feature.
23.501 · CR 6330 rev.5
Support of Ethernet type of BH PDU Session for MWAB
approved3GPP CR ↗23.501 · CR 6459 rev.1
Inclusion of Forbidden EPS Areas in mobility restriction for NR to LTE mobility
approved3GPP CR ↗23.501 · CR 6395 rev.3
Providing per-subscriber Allowed MAC addresses from UDM
approved3GPP CR ↗23.501 · CR 6423 rev.2
Identification of INS case and hosting operator
approved3GPP CR ↗23.503 · CR 1579 rev.2
PCRT update to identify Hosting Network in case of INS
approved3GPP CR ↗23.501 · CR 6451 rev.7
Introducing NSSAA over EPC
approved3GPP CR ↗23.501 · CR 6424 rev.9
Indirect Network Sharing for disaster condition
approved3GPP CR ↗23.501 · CR 6488
Removal of editor's notes related to VFL server registration
approved3GPP CR ↗23.501 · CR 6535
KI#2: VFL services
approved3GPP CR ↗23.501 · CR 6530 rev.1
PSI for N6 unmarked PDUs
approved3GPP CR ↗23.501 · CR 6526 rev.1
Fix the mistake of PDU Set based handling and PDU Set based QoS handling
approved3GPP CR ↗23.501 · CR 6493 rev.1
N3IWF/TNGF reselection considering energy related information.
approved3GPP CR ↗23.501 · CR 6522 rev.1
Correction on Energy Consumption calculation for redundant transmission or PDU Session with multiple PDU Session Anchors
approved3GPP CR ↗23.501 · CR 6483 rev.1
Support for Dynamic Network Identity
approved3GPP CR ↗23.501 · CR 6504 rev.1
SMF and PCF Selection for UIA_ARC
approved3GPP CR ↗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 23.502
Procedures for the 5G System (5GS)
S2 · Rel-15inferredrank 4265strong evidence
graph adjacency
stage_realization_of with mapped TS/TR 23.501
TS 24.501
Non-Access-Stratum (NAS) protocol for 5G System (5GS); Stage 3
C1 · Rel-15inferredrank 2125strong evidence
TS 29.522
5G System; Network Exposure Function Northbound APIs; Stage 3
C3 · Rel-15inferredrank 1775strong evidence
TS 29.503
5G System; Unified Data Management Services; Stage 3
C4 · Rel-15inferredrank 1725moderate evidence
TS 29.571
5G System; Common Data Types for Service Based Interfaces; Stage 3
C4 · Rel-15inferredrank 1700strong evidence
TS 29.518
5G System; Access and Mobility Management Services; Stage 3
C4 · Rel-15inferredrank 1600strong evidence
TS 29.513
5G System; Policy and Charging Control signalling flows and QoS parameter mapping; Stage 3
C3 · Rel-15inferredrank 1550strong evidence
TS 29.510
5G System; Network function repository services; Stage 3
C4 · Rel-15inferredrank 1475moderate evidence
TS 29.502
5G System; Session Management Services; Stage 3
C4 · Rel-15inferredrank 1450strong evidence
TS 29.512
5G System; Session Management Policy Control Service; Stage 3
C3 · Rel-15inferredrank 1425strong evidence
TS 29.244
Interface between the Control Plane and the User Plane nodes
C4 · Rel-14inferredrank 1300strong evidence
TS 27.007
AT command set for User Equipment (UE)
C1 · Rel-4inferredrank 1200moderate 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.