{"topic":{"id":"ng-ran-split","name":"NG-RAN Functional Split","summary":"gNB-CU-CP, gNB-CU-UP and gNB-DU architecture with F1 and E1 control relationships.","facets":["CU-CP","CU-UP","DU","F1","E1","User plane"],"provenance_type":"curated","review_state":"reviewed","source_url":"https://www.3gpp.org/dynareport/38401.htm","valid_from_release":"Rel-15","valid_to_release":null},"release":"Rel-13","release_state":{"applicable":false,"note":"reviewed mapping begins in Rel-15"},"specifications":[{"number":"38.401","type":"TS","title":"NG-RAN; Architecture description","status":"Under change control","initial_release":"Rel-15","primary_group":"R3","portal_url":"https://portal.3gpp.org/desktopmodules/Specifications/SpecificationDetails.aspx?specificationId=3219","dynareport_url":"https://www.3gpp.org/dynareport/38401.htm","classifications":[],"lineage_layer":{"id":"ran_realization","label":"RAN / radio realization","provenance_type":"inferred","review_state":"candidate","source_url":null,"note":"Orientation inferred from the 38-series; this is not an official 3GPP stage assignment."}},{"number":"38.473","type":"TS","title":"NG-RAN; F1 Application Protocol (F1AP)","status":"Under change control","initial_release":"Rel-15","primary_group":"R3","portal_url":"https://portal.3gpp.org/desktopmodules/Specifications/SpecificationDetails.aspx?specificationId=3260","dynareport_url":"https://www.3gpp.org/dynareport/38473.htm","classifications":[],"lineage_layer":{"id":"ran_realization","label":"RAN / radio realization","provenance_type":"inferred","review_state":"candidate","source_url":null,"note":"Orientation inferred from the 38-series; this is not an official 3GPP stage assignment."}},{"number":"38.463","type":"TS","title":"NG-RAN; E1 Application Protocol (E1AP)","status":"Under change control","initial_release":"Rel-15","primary_group":"R3","portal_url":"https://portal.3gpp.org/desktopmodules/Specifications/SpecificationDetails.aspx?specificationId=3431","dynareport_url":"https://www.3gpp.org/dynareport/38463.htm","classifications":[],"lineage_layer":{"id":"ran_realization","label":"RAN / radio realization","provenance_type":"inferred","review_state":"candidate","source_url":null,"note":"Orientation inferred from the 38-series; this is not an official 3GPP stage assignment."}},{"number":"29.281","type":"TS","title":"General Packet Radio System (GPRS) Tunnelling Protocol User Plane (GTPv1-U)","status":"Under change control","initial_release":"Rel-8","primary_group":"C4","portal_url":"https://portal.3gpp.org/desktopmodules/Specifications/SpecificationDetails.aspx?specificationId=1699","dynareport_url":"https://www.3gpp.org/dynareport/29281.htm","classifications":[],"lineage_layer":{"id":"core_protocol","label":"Core-network protocol & service realization","provenance_type":"inferred","review_state":"candidate","source_url":null,"note":"Orientation inferred from the 29-series; this is not an official 3GPP stage assignment."}}],"layers":[{"id":"core_protocol","label":"Core-network protocol & service realization","specifications":[{"number":"29.281","type":"TS","title":"General Packet Radio System (GPRS) Tunnelling Protocol User Plane (GTPv1-U)","status":"Under change control","initial_release":"Rel-8","primary_group":"C4","portal_url":"https://portal.3gpp.org/desktopmodules/Specifications/SpecificationDetails.aspx?specificationId=1699","dynareport_url":"https://www.3gpp.org/dynareport/29281.htm","classifications":[],"lineage_layer":{"id":"core_protocol","label":"Core-network protocol & service realization","provenance_type":"inferred","review_state":"candidate","source_url":null,"note":"Orientation inferred from the 29-series; this is not an official 3GPP stage assignment."}}]},{"id":"ran_realization","label":"RAN / radio realization","specifications":[{"number":"38.401","type":"TS","title":"NG-RAN; Architecture description","status":"Under change control","initial_release":"Rel-15","primary_group":"R3","portal_url":"https://portal.3gpp.org/desktopmodules/Specifications/SpecificationDetails.aspx?specificationId=3219","dynareport_url":"https://www.3gpp.org/dynareport/38401.htm","classifications":[],"lineage_layer":{"id":"ran_realization","label":"RAN / radio realization","provenance_type":"inferred","review_state":"candidate","source_url":null,"note":"Orientation inferred from the 38-series; this is not an official 3GPP stage assignment."}},{"number":"38.473","type":"TS","title":"NG-RAN; F1 Application Protocol (F1AP)","status":"Under change control","initial_release":"Rel-15","primary_group":"R3","portal_url":"https://portal.3gpp.org/desktopmodules/Specifications/SpecificationDetails.aspx?specificationId=3260","dynareport_url":"https://www.3gpp.org/dynareport/38473.htm","classifications":[],"lineage_layer":{"id":"ran_realization","label":"RAN / radio realization","provenance_type":"inferred","review_state":"candidate","source_url":null,"note":"Orientation inferred from the 38-series; this is not an official 3GPP stage assignment."}},{"number":"38.463","type":"TS","title":"NG-RAN; E1 Application Protocol (E1AP)","status":"Under change control","initial_release":"Rel-15","primary_group":"R3","portal_url":"https://portal.3gpp.org/desktopmodules/Specifications/SpecificationDetails.aspx?specificationId=3431","dynareport_url":"https://www.3gpp.org/dynareport/38463.htm","classifications":[],"lineage_layer":{"id":"ran_realization","label":"RAN / radio realization","provenance_type":"inferred","review_state":"candidate","source_url":null,"note":"Orientation inferred from the 38-series; this is not an official 3GPP stage assignment."}}]}],"primary_work_item":null,"connected_work_items":[{"database_id":246834,"uid":680015,"acronym":"HLcom-CT","effective_acronym":"HLcom-CT","title":"CT aspects of Optimizations to Support High Latency","release":"Rel-13","status":"PCG approved","responsible_groups":["C4"],"completion_rate":100.0,"latest_remark":null,"work_plan_synced_at":"2026-10-07T21:46:45.612928+00:00","source_url":"https://portal.3gpp.org/desktopmodules/WorkItem/WorkItemDetails.aspx?workitemId=680015","work_plan_source_url":"https://www.3gpp.org/ftp/Information/WORK_PLAN/Work_plan_3gpp_2026_09_28.xlsx","specifications":["29.281"],"specification_associations":[{"number":"29.281","association_sources":["crdb"],"association_status":"source_tracked"}],"lineage_scope":"connected_to_mapped_specification"},{"database_id":246943,"uid":660172,"acronym":"LTE_CA_enh_b5C-Core","effective_acronym":"LTE_CA_enh_b5C-Core","title":"Core part: LTE Carrier Aggregation Enhancement Beyond 5 Carriers","release":"Rel-13","status":"PCG approved","responsible_groups":["R1"],"completion_rate":100.0,"latest_remark":"RP-151285","work_plan_synced_at":"2026-10-07T21:46:45.700336+00:00","source_url":"https://portal.3gpp.org/desktopmodules/WorkItem/WorkItemDetails.aspx?workitemId=660172","work_plan_source_url":"https://www.3gpp.org/ftp/Information/WORK_PLAN/Work_plan_3gpp_2026_09_28.xlsx","specifications":["29.281"],"specification_associations":[{"number":"29.281","association_sources":["crdb"],"association_status":"source_tracked"}],"lineage_scope":"connected_to_mapped_specification"},{"database_id":247266,"uid":610034,"acronym":"TEI13","effective_acronym":"TEI13","title":"(Small) Technical Enhancements and Improvements for Rel-13","release":"Rel-13","status":"PCG approved","responsible_groups":["RP"],"completion_rate":100.0,"latest_remark":"PCG-31","work_plan_synced_at":"2026-10-07T21:46:46.031964+00:00","source_url":"https://portal.3gpp.org/desktopmodules/WorkItem/WorkItemDetails.aspx?workitemId=610034","work_plan_source_url":"https://www.3gpp.org/ftp/Information/WORK_PLAN/Work_plan_3gpp_2026_09_28.xlsx","specifications":["29.281"],"specification_associations":[{"number":"29.281","association_sources":["crdb"],"association_status":"source_tracked"}],"lineage_scope":"connected_to_mapped_specification"},{"database_id":246547,"uid":650103,"acronym":"voE_UTRAN_PPD-CT","effective_acronym":"voE_UTRAN_PPD-CT","title":"CT4 part of CT aspects of voice over E-UTRAN Paging Policy Differentiation","release":"Rel-13","status":"PCG approved","responsible_groups":["C4"],"completion_rate":100.0,"latest_remark":"-","work_plan_synced_at":"2026-10-07T21:46:45.367853+00:00","source_url":"https://portal.3gpp.org/desktopmodules/WorkItem/WorkItemDetails.aspx?workitemId=650103","work_plan_source_url":"https://www.3gpp.org/ftp/Information/WORK_PLAN/Work_plan_3gpp_2026_09_28.xlsx","specifications":["29.281"],"specification_associations":[{"number":"29.281","association_sources":["portal-spec"],"association_status":"source_tracked"}],"lineage_scope":"connected_to_mapped_specification"},{"database_id":247373,"uid":530216,"acronym":"LIMONET-LIPA-del4","effective_acronym":"LIMONET-LIPA-del4","title":"Deleted - CT4 part of CN aspects of LIPA Mobility","release":"Rel-12","status":"PCG stopped","responsible_groups":["C4"],"completion_rate":100.0,"latest_remark":"-","work_plan_synced_at":"2026-10-07T21:46:46.142821+00:00","source_url":"https://portal.3gpp.org/desktopmodules/WorkItem/WorkItemDetails.aspx?workitemId=530216","work_plan_source_url":"https://www.3gpp.org/ftp/Information/WORK_PLAN/Work_plan_3gpp_2026_09_28.xlsx","specifications":["29.281"],"specification_associations":[{"number":"29.281","association_sources":["portal-spec"],"association_status":"source_tracked"}],"lineage_scope":"connected_to_mapped_specification"},{"database_id":247365,"uid":530115,"acronym":"LIMONET-SIPTO-CT4","effective_acronym":"LIMONET-SIPTO-CT4","title":"CT4 part of Stage 3 CN aspects of SIPTO at the Local Network","release":"Rel-12","status":"PCG approved","responsible_groups":["C4"],"completion_rate":100.0,"latest_remark":"-","work_plan_synced_at":"2026-10-07T21:46:46.142821+00:00","source_url":"https://portal.3gpp.org/desktopmodules/WorkItem/WorkItemDetails.aspx?workitemId=530115","work_plan_source_url":"https://www.3gpp.org/ftp/Information/WORK_PLAN/Work_plan_3gpp_2026_09_28.xlsx","specifications":["29.281"],"specification_associations":[{"number":"29.281","association_sources":["portal-spec"],"association_status":"source_tracked"}],"lineage_scope":"connected_to_mapped_specification"},{"database_id":248152,"uid":620040,"acronym":"LTE_SC_enh_dualC","effective_acronym":"LTE_SC_enh_dualC","title":"Dual connectivity for LTE","release":"Rel-12","status":"PCG approved","responsible_groups":["R1","R2","R3","R4","S2","C4"],"completion_rate":100.0,"latest_remark":"-","work_plan_synced_at":"2026-10-07T21:46:46.536559+00:00","source_url":"https://portal.3gpp.org/desktopmodules/WorkItem/WorkItemDetails.aspx?workitemId=620040","work_plan_source_url":"https://www.3gpp.org/ftp/Information/WORK_PLAN/Work_plan_3gpp_2026_09_28.xlsx","specifications":["29.281"],"specification_associations":[{"number":"29.281","association_sources":["crdb"],"association_status":"source_tracked"}],"lineage_scope":"connected_to_mapped_specification"},{"database_id":248156,"uid":650006,"acronym":"LTE_SC_enh_dualC-CT","effective_acronym":"LTE_SC_enh_dualC-CT","title":"CT aspects of Dual connectivity for LTE","release":"Rel-12","status":"PCG approved","responsible_groups":["C4"],"completion_rate":100.0,"latest_remark":"CP-140487","work_plan_synced_at":"2026-10-07T21:46:46.536559+00:00","source_url":"https://portal.3gpp.org/desktopmodules/WorkItem/WorkItemDetails.aspx?workitemId=650006","work_plan_source_url":"https://www.3gpp.org/ftp/Information/WORK_PLAN/Work_plan_3gpp_2026_09_28.xlsx","specifications":["29.281"],"specification_associations":[{"number":"29.281","association_sources":["crdb","portal-spec"],"association_status":"source_tracked"}],"lineage_scope":"connected_to_mapped_specification"},{"database_id":248199,"uid":560018,"acronym":"TEI12","effective_acronym":"TEI12","title":"(Small) Technical Enhancements and Improvements for Rel-12","release":"Rel-12","status":"PCG approved","responsible_groups":["RP"],"completion_rate":100.0,"latest_remark":"-","work_plan_synced_at":"2026-10-07T21:46:46.591888+00:00","source_url":"https://portal.3gpp.org/desktopmodules/WorkItem/WorkItemDetails.aspx?workitemId=560018","work_plan_source_url":"https://www.3gpp.org/ftp/Information/WORK_PLAN/Work_plan_3gpp_2026_09_28.xlsx","specifications":["29.281"],"specification_associations":[{"number":"29.281","association_sources":["crdb"],"association_status":"source_tracked"}],"lineage_scope":"connected_to_mapped_specification"},{"database_id":248517,"uid":540018,"acronym":"SIRIG","effective_acronym":"SIRIG","title":"CN aspects of Service Identification for RRC Improvements in GERAN","release":"Rel-11","status":"PCG approved","responsible_groups":["C3"],"completion_rate":100.0,"latest_remark":"-","work_plan_synced_at":"2026-10-07T21:46:46.741801+00:00","source_url":"https://portal.3gpp.org/desktopmodules/WorkItem/WorkItemDetails.aspx?workitemId=540018","work_plan_source_url":"https://www.3gpp.org/ftp/Information/WORK_PLAN/Work_plan_3gpp_2026_09_28.xlsx","specifications":["29.281"],"specification_associations":[{"number":"29.281","association_sources":["portal-spec"],"association_status":"source_tracked"}],"lineage_scope":"connected_to_mapped_specification"},{"database_id":248518,"uid":540118,"acronym":"SIRIG","effective_acronym":"SIRIG","title":"CT4 part of CN aspects of Service Identification for RRC Improvements in GERAN","release":"Rel-11","status":"PCG approved","responsible_groups":["C4"],"completion_rate":100.0,"latest_remark":"-","work_plan_synced_at":"2026-10-07T21:46:46.741801+00:00","source_url":"https://portal.3gpp.org/desktopmodules/WorkItem/WorkItemDetails.aspx?workitemId=540118","work_plan_source_url":"https://www.3gpp.org/ftp/Information/WORK_PLAN/Work_plan_3gpp_2026_09_28.xlsx","specifications":["29.281"],"specification_associations":[{"number":"29.281","association_sources":["portal-spec"],"association_status":"source_tracked"}],"lineage_scope":"connected_to_mapped_specification"},{"database_id":248438,"uid":540111,"acronym":"SaMOG_WLAN-CN","effective_acronym":"SaMOG_WLAN-CN","title":"CT4 part of CN aspects of Mobility based On GTP & PMIPv6 for WLAN access to EPC","release":"Rel-11","status":"PCG approved","responsible_groups":["C4"],"completion_rate":100.0,"latest_remark":"-","work_plan_synced_at":"2026-10-07T21:46:46.691058+00:00","source_url":"https://portal.3gpp.org/desktopmodules/WorkItem/WorkItemDetails.aspx?workitemId=540111","work_plan_source_url":"https://www.3gpp.org/ftp/Information/WORK_PLAN/Work_plan_3gpp_2026_09_28.xlsx","specifications":["29.281"],"specification_associations":[{"number":"29.281","association_sources":["portal-spec"],"association_status":"source_tracked"}],"lineage_scope":"connected_to_mapped_specification"},{"database_id":248739,"uid":480004,"acronym":"TEI11","effective_acronym":"TEI11","title":"(Small) Technical Enhancements and Improvements for Rel-11","release":"Rel-11","status":"PCG approved","responsible_groups":["RP"],"completion_rate":100.0,"latest_remark":"-","work_plan_synced_at":"2026-10-07T21:46:46.842748+00:00","source_url":"https://portal.3gpp.org/desktopmodules/WorkItem/WorkItemDetails.aspx?workitemId=480004","work_plan_source_url":"https://www.3gpp.org/ftp/Information/WORK_PLAN/Work_plan_3gpp_2026_09_28.xlsx","specifications":["29.281"],"specification_associations":[{"number":"29.281","association_sources":["crdb"],"association_status":"source_tracked"}],"lineage_scope":"connected_to_mapped_specification"},{"database_id":248834,"uid":480108,"acronym":"LIPA","effective_acronym":"LIPA","title":"CT4 part of Stage 3 for Local IP Access","release":"Rel-10","status":"PCG approved","responsible_groups":["C4"],"completion_rate":100.0,"latest_remark":"-","work_plan_synced_at":"2026-10-07T21:46:46.898781+00:00","source_url":"https://portal.3gpp.org/desktopmodules/WorkItem/WorkItemDetails.aspx?workitemId=480108","work_plan_source_url":"https://www.3gpp.org/ftp/Information/WORK_PLAN/Work_plan_3gpp_2026_09_28.xlsx","specifications":["29.281"],"specification_associations":[{"number":"29.281","association_sources":["portal-spec"],"association_status":"source_tracked"}],"lineage_scope":"connected_to_mapped_specification"},{"database_id":248839,"uid":480107,"acronym":"SIPTO","effective_acronym":"SIPTO","title":"CT4 part of Stage 3 for SIPTO for macro networks","release":"Rel-10","status":"PCG approved","responsible_groups":["C4"],"completion_rate":100.0,"latest_remark":"-","work_plan_synced_at":"2026-10-07T21:46:46.898781+00:00","source_url":"https://portal.3gpp.org/desktopmodules/WorkItem/WorkItemDetails.aspx?workitemId=480107","work_plan_source_url":"https://www.3gpp.org/ftp/Information/WORK_PLAN/Work_plan_3gpp_2026_09_28.xlsx","specifications":["29.281"],"specification_associations":[{"number":"29.281","association_sources":["portal-spec"],"association_status":"source_tracked"}],"lineage_scope":"connected_to_mapped_specification"},{"database_id":248876,"uid":490109,"acronym":"SMOG-St3","effective_acronym":"SMOG-St3","title":"CT4 part of Stage 3 for S2b Mobility based on GTP","release":"Rel-10","status":"PCG approved","responsible_groups":["C4"],"completion_rate":100.0,"latest_remark":"-","work_plan_synced_at":"2026-10-07T21:46:46.958589+00:00","source_url":"https://portal.3gpp.org/desktopmodules/WorkItem/WorkItemDetails.aspx?workitemId=490109","work_plan_source_url":"https://www.3gpp.org/ftp/Information/WORK_PLAN/Work_plan_3gpp_2026_09_28.xlsx","specifications":["29.281"],"specification_associations":[{"number":"29.281","association_sources":["portal-spec"],"association_status":"source_tracked"}],"lineage_scope":"connected_to_mapped_specification"},{"database_id":249064,"uid":440044,"acronym":"TEI10","effective_acronym":"TEI10","title":"(Small) Technical Enhancements and Improvements for Rel-10","release":"Rel-10","status":"PCG approved","responsible_groups":["RP"],"completion_rate":100.0,"latest_remark":"-","work_plan_synced_at":"2026-10-07T21:46:47.079674+00:00","source_url":"https://portal.3gpp.org/desktopmodules/WorkItem/WorkItemDetails.aspx?workitemId=440044","work_plan_source_url":"https://www.3gpp.org/ftp/Information/WORK_PLAN/Work_plan_3gpp_2026_09_28.xlsx","specifications":["29.281"],"specification_associations":[{"number":"29.281","association_sources":["crdb"],"association_status":"source_tracked"}],"lineage_scope":"connected_to_mapped_specification"},{"database_id":249204,"uid":400039,"acronym":"MBMS_EPS","effective_acronym":"MBMS_EPS","title":"MBMS support in EPS","release":"Rel-9","status":"PCG approved","responsible_groups":["R2"],"completion_rate":100.0,"latest_remark":"-","work_plan_synced_at":"2026-10-07T21:46:47.138205+00:00","source_url":"https://portal.3gpp.org/desktopmodules/WorkItem/WorkItemDetails.aspx?workitemId=400039","work_plan_source_url":"https://www.3gpp.org/ftp/Information/WORK_PLAN/Work_plan_3gpp_2026_09_28.xlsx","specifications":["29.281"],"specification_associations":[{"number":"29.281","association_sources":["portal-spec"],"association_status":"source_tracked"}],"lineage_scope":"connected_to_mapped_specification"},{"database_id":249208,"uid":440025,"acronym":"MBMS_EPS","effective_acronym":"MBMS_EPS","title":"CT4 aspects of MBMS support in EPS (Stage 3)","release":"Rel-9","status":"PCG approved","responsible_groups":["C4"],"completion_rate":100.0,"latest_remark":"-","work_plan_synced_at":"2026-10-07T21:46:47.138205+00:00","source_url":"https://portal.3gpp.org/desktopmodules/WorkItem/WorkItemDetails.aspx?workitemId=440025","work_plan_source_url":"https://www.3gpp.org/ftp/Information/WORK_PLAN/Work_plan_3gpp_2026_09_28.xlsx","specifications":["29.281"],"specification_associations":[{"number":"29.281","association_sources":["portal-spec"],"association_status":"source_tracked"}],"lineage_scope":"connected_to_mapped_specification"},{"database_id":249243,"uid":440256,"acronym":"NDS_Backhaul","effective_acronym":"NDS_Backhaul","title":"Deleted - CT4 part of Network Domain Security (NDS) enhancements to support backhaul security","release":"Rel-9","status":"PCG stopped","responsible_groups":["C4"],"completion_rate":100.0,"latest_remark":"-","work_plan_synced_at":"2026-10-07T21:46:47.138205+00:00","source_url":"https://portal.3gpp.org/desktopmodules/WorkItem/WorkItemDetails.aspx?workitemId=440256","work_plan_source_url":"https://www.3gpp.org/ftp/Information/WORK_PLAN/Work_plan_3gpp_2026_09_28.xlsx","specifications":["29.281"],"specification_associations":[{"number":"29.281","association_sources":["portal-spec"],"association_status":"source_tracked"}],"lineage_scope":"connected_to_mapped_specification"},{"database_id":249347,"uid":420099,"acronym":"TEI9","effective_acronym":"TEI9","title":"(Small) Technical Enhancements and Improvements for Rel-9","release":"Rel-9","status":"PCG approved","responsible_groups":["RP"],"completion_rate":100.0,"latest_remark":"-","work_plan_synced_at":"2026-10-07T21:46:47.194395+00:00","source_url":"https://portal.3gpp.org/desktopmodules/WorkItem/WorkItemDetails.aspx?workitemId=420099","work_plan_source_url":"https://www.3gpp.org/ftp/Information/WORK_PLAN/Work_plan_3gpp_2026_09_28.xlsx","specifications":["29.281"],"specification_associations":[{"number":"29.281","association_sources":["crdb"],"association_status":"source_tracked"}],"lineage_scope":"connected_to_mapped_specification"},{"database_id":249841,"uid":32085,"acronym":"FS_SAE","effective_acronym":"FS_SAE","title":"Study on 3GPP System Architecture Evolution","release":"Rel-8","status":"Awaiting approval","responsible_groups":["S2","S3"],"completion_rate":100.0,"latest_remark":"-","work_plan_synced_at":"2026-10-07T21:46:47.522051+00:00","source_url":"https://portal.3gpp.org/desktopmodules/WorkItem/WorkItemDetails.aspx?workitemId=32085","work_plan_source_url":"https://www.3gpp.org/ftp/Information/WORK_PLAN/Work_plan_3gpp_2026_09_28.xlsx","specifications":["29.281"],"specification_associations":[{"number":"29.281","association_sources":["portal-spec"],"association_status":"source_tracked"}],"lineage_scope":"connected_to_mapped_specification"},{"database_id":249735,"uid":20068,"acronym":"LTE","effective_acronym":"LTE","title":"Rel-8 LTE 3G Long Term Evolution - Evolved Packet System RAN part","release":"Rel-8","status":"Awaiting approval","responsible_groups":["S5"],"completion_rate":100.0,"latest_remark":"RP-080741","work_plan_synced_at":"2026-10-07T21:46:47.465321+00:00","source_url":"https://portal.3gpp.org/desktopmodules/WorkItem/WorkItemDetails.aspx?workitemId=20068","work_plan_source_url":"https://www.3gpp.org/ftp/Information/WORK_PLAN/Work_plan_3gpp_2026_09_28.xlsx","specifications":["29.281"],"specification_associations":[{"number":"29.281","association_sources":["portal-spec"],"association_status":"source_tracked"}],"lineage_scope":"connected_to_mapped_specification"},{"database_id":249385,"uid":340062,"acronym":"SAES","effective_acronym":"SAES","title":"Stage 3 (CT4) of SAE impact on existing capabilities","release":"Rel-8","status":"PCG approved","responsible_groups":["C4"],"completion_rate":100.0,"latest_remark":"-","work_plan_synced_at":"2026-10-07T21:46:47.257547+00:00","source_url":"https://portal.3gpp.org/desktopmodules/WorkItem/WorkItemDetails.aspx?workitemId=340062","work_plan_source_url":"https://www.3gpp.org/ftp/Information/WORK_PLAN/Work_plan_3gpp_2026_09_28.xlsx","specifications":["29.281"],"specification_associations":[{"number":"29.281","association_sources":["portal-spec"],"association_status":"source_tracked"}],"lineage_scope":"connected_to_mapped_specification"},{"database_id":249378,"uid":320005,"acronym":"SAES","effective_acronym":"SAES","title":"3GPP System Architecture Evolution Specification - Evolved Packet System (non RAN aspects)","release":"Rel-8","status":"PCG approved","responsible_groups":["S1","S2","S3","S5","C1","C3","C4","C6"],"completion_rate":100.0,"latest_remark":"-","work_plan_synced_at":"2026-10-07T21:46:47.257547+00:00","source_url":"https://portal.3gpp.org/desktopmodules/WorkItem/WorkItemDetails.aspx?workitemId=320005","work_plan_source_url":"https://www.3gpp.org/ftp/Information/WORK_PLAN/Work_plan_3gpp_2026_09_28.xlsx","specifications":["29.281"],"specification_associations":[{"number":"29.281","association_sources":["portal-spec"],"association_status":"source_tracked"}],"lineage_scope":"connected_to_mapped_specification"},{"database_id":249391,"uid":350025,"acronym":"SAES-LTE","effective_acronym":"SAES-LTE","title":"SAE for LTE access","release":"Rel-8","status":"PCG approved","responsible_groups":["S2"],"completion_rate":100.0,"latest_remark":"-","work_plan_synced_at":"2026-10-07T21:46:47.257547+00:00","source_url":"https://portal.3gpp.org/desktopmodules/WorkItem/WorkItemDetails.aspx?workitemId=350025","work_plan_source_url":"https://www.3gpp.org/ftp/Information/WORK_PLAN/Work_plan_3gpp_2026_09_28.xlsx","specifications":["29.281"],"specification_associations":[{"number":"29.281","association_sources":["portal-spec"],"association_status":"source_tracked"}],"lineage_scope":"connected_to_mapped_specification"},{"database_id":249411,"uid":380032,"acronym":"SAES-SA-FP_3GPP","effective_acronym":"SAES-SA-FP_3GPP","title":"Stage 3 for EPC to UTRAN","release":"Rel-8","status":"PCG approved","responsible_groups":["C4"],"completion_rate":100.0,"latest_remark":"-","work_plan_synced_at":"2026-10-07T21:46:47.257547+00:00","source_url":"https://portal.3gpp.org/desktopmodules/WorkItem/WorkItemDetails.aspx?workitemId=380032","work_plan_source_url":"https://www.3gpp.org/ftp/Information/WORK_PLAN/Work_plan_3gpp_2026_09_28.xlsx","specifications":["29.281"],"specification_associations":[{"number":"29.281","association_sources":["portal-spec"],"association_status":"source_tracked"}],"lineage_scope":"connected_to_mapped_specification"},{"database_id":249410,"uid":340056,"acronym":"SAES-SA-FP_3GPP","effective_acronym":"SAES-SA-FP_3GPP","title":"Stage 3 for EPC - GPRS","release":"Rel-8","status":"PCG approved","responsible_groups":["C4"],"completion_rate":100.0,"latest_remark":"-","work_plan_synced_at":"2026-10-07T21:46:47.257547+00:00","source_url":"https://portal.3gpp.org/desktopmodules/WorkItem/WorkItemDetails.aspx?workitemId=340056","work_plan_source_url":"https://www.3gpp.org/ftp/Information/WORK_PLAN/Work_plan_3gpp_2026_09_28.xlsx","specifications":["29.281"],"specification_associations":[{"number":"29.281","association_sources":["portal-spec"],"association_status":"source_tracked"}],"lineage_scope":"connected_to_mapped_specification"},{"database_id":249429,"uid":370011,"acronym":"SAES-SA-FP_n3GPP","effective_acronym":"SAES-SA-FP_n3GPP","title":"Stage 3 for interfaces within EPC","release":"Rel-8","status":"PCG approved","responsible_groups":["C4"],"completion_rate":100.0,"latest_remark":"-","work_plan_synced_at":"2026-10-07T21:46:47.257547+00:00","source_url":"https://portal.3gpp.org/desktopmodules/WorkItem/WorkItemDetails.aspx?workitemId=370011","work_plan_source_url":"https://www.3gpp.org/ftp/Information/WORK_PLAN/Work_plan_3gpp_2026_09_28.xlsx","specifications":["29.281"],"specification_associations":[{"number":"29.281","association_sources":["portal-spec"],"association_status":"source_tracked"}],"lineage_scope":"connected_to_mapped_specification"},{"database_id":249818,"uid":320001,"acronym":"TEI8","effective_acronym":"TEI8","title":"(Small) Technical Enhancements and Improvements for Rel-8","release":"Rel-8","status":"Awaiting approval","responsible_groups":["RP"],"completion_rate":100.0,"latest_remark":"-","work_plan_synced_at":"2026-10-07T21:46:47.522051+00:00","source_url":"https://portal.3gpp.org/desktopmodules/WorkItem/WorkItemDetails.aspx?workitemId=320001","work_plan_source_url":"https://www.3gpp.org/ftp/Information/WORK_PLAN/Work_plan_3gpp_2026_09_28.xlsx","specifications":["29.281"],"specification_associations":[{"number":"29.281","association_sources":["crdb"],"association_status":"source_tracked"}],"lineage_scope":"connected_to_mapped_specification"},{"database_id":250471,"uid":2544,"acronym":"MBMS","effective_acronym":"MBMS","title":"Multimedia Broadcast and Multicast Service","release":"Rel-6","status":"Awaiting approval","responsible_groups":["R2","R4","S1","S2","S3","S4","S5","R5"],"completion_rate":100.0,"latest_remark":"-","work_plan_synced_at":"2026-10-07T21:46:47.945228+00:00","source_url":"https://portal.3gpp.org/desktopmodules/WorkItem/WorkItemDetails.aspx?workitemId=2544","work_plan_source_url":"https://www.3gpp.org/ftp/Information/WORK_PLAN/Work_plan_3gpp_2026_09_28.xlsx","specifications":["29.281"],"specification_associations":[{"number":"29.281","association_sources":["portal-spec"],"association_status":"source_tracked"}],"lineage_scope":"connected_to_mapped_specification"}],"relationships":[{"id":7,"source_spec":"38.473","target_spec":"38.401","edge_type":"interface_specification","provenance_type":"curated","confidence":1.0,"review_state":"reviewed","source_url":"atlas://curated/dependency-edges","valid_from_release":null,"valid_to_release":null}],"change_requests":{"primary_work_item":[],"release_context":[{"portal_cr_id":null,"source_key":"crdb:29.281|0073|-|Rel-13","specification":"29.281","cr_number":"0073","revision":null,"target_release":"Rel-13","title":"GTP-U initial and triggered message types","wg_status":null,"tsg_status":null,"clauses_affected":null,"summary_of_change":null,"source_url":"ftp://ftp.3gpp.org/Information/Databases/Change_Request/CRDB_20260715.zip","detail_synced_at":null},{"portal_cr_id":null,"source_key":"crdb:29.281|0070|-|Rel-13","specification":"29.281","cr_number":"0070","revision":null,"target_release":"Rel-13","title":"Sending multiple G-PDUs within a single UDP datagram","wg_status":"postponed","tsg_status":null,"clauses_affected":null,"summary_of_change":null,"source_url":"ftp://ftp.3gpp.org/Information/Databases/Change_Request/CRDB_20260715.zip","detail_synced_at":null},{"portal_cr_id":null,"source_key":"crdb:29.281|0070|1|Rel-13","specification":"29.281","cr_number":"0070","revision":"1","target_release":"Rel-13","title":"Sending multiple G-PDUs within a single UDP datagram","wg_status":"withdrawn","tsg_status":null,"clauses_affected":null,"summary_of_change":null,"source_url":"ftp://ftp.3gpp.org/Information/Databases/Change_Request/CRDB_20260715.zip","detail_synced_at":null},{"portal_cr_id":null,"source_key":"crdb:29.281|0071|-|Rel-13","specification":"29.281","cr_number":"0071","revision":null,"target_release":"Rel-13","title":"Tunnelling scenarios for supporting High Latency communication","wg_status":"revised","tsg_status":null,"clauses_affected":null,"summary_of_change":null,"source_url":"ftp://ftp.3gpp.org/Information/Databases/Change_Request/CRDB_20260715.zip","detail_synced_at":null},{"portal_cr_id":null,"source_key":"crdb:29.281|0071|1|Rel-13","specification":"29.281","cr_number":"0071","revision":"1","target_release":"Rel-13","title":"Tunnelling scenarios for supporting High Latency communication","wg_status":"revised","tsg_status":null,"clauses_affected":null,"summary_of_change":null,"source_url":"ftp://ftp.3gpp.org/Information/Databases/Change_Request/CRDB_20260715.zip","detail_synced_at":null},{"portal_cr_id":null,"source_key":"crdb:29.281|0071|2|Rel-13","specification":"29.281","cr_number":"0071","revision":"2","target_release":"Rel-13","title":"Tunnelling scenarios for supporting High Latency communication","wg_status":"agreed","tsg_status":"approved","clauses_affected":null,"summary_of_change":null,"source_url":"ftp://ftp.3gpp.org/Information/Databases/Change_Request/CRDB_20260715.zip","detail_synced_at":null},{"portal_cr_id":null,"source_key":"crdb:29.281|0072|-|Rel-13","specification":"29.281","cr_number":"0072","revision":null,"target_release":"Rel-13","title":"G-PDU extension header handling","wg_status":"revised","tsg_status":null,"clauses_affected":null,"summary_of_change":null,"source_url":"ftp://ftp.3gpp.org/Information/Databases/Change_Request/CRDB_20260715.zip","detail_synced_at":null},{"portal_cr_id":null,"source_key":"crdb:29.281|0072|1|Rel-13","specification":"29.281","cr_number":"0072","revision":"1","target_release":"Rel-13","title":"G-PDU extension header handling","wg_status":"revised","tsg_status":null,"clauses_affected":null,"summary_of_change":null,"source_url":"ftp://ftp.3gpp.org/Information/Databases/Change_Request/CRDB_20260715.zip","detail_synced_at":null},{"portal_cr_id":null,"source_key":"crdb:29.281|0072|2|Rel-13","specification":"29.281","cr_number":"0072","revision":"2","target_release":"Rel-13","title":"G-PDU extension header handling","wg_status":"revised","tsg_status":null,"clauses_affected":null,"summary_of_change":null,"source_url":"ftp://ftp.3gpp.org/Information/Databases/Change_Request/CRDB_20260715.zip","detail_synced_at":null},{"portal_cr_id":null,"source_key":"crdb:29.281|0072|3|Rel-13","specification":"29.281","cr_number":"0072","revision":"3","target_release":"Rel-13","title":"G-PDU extension header handling","wg_status":"agreed","tsg_status":"approved","clauses_affected":null,"summary_of_change":null,"source_url":"ftp://ftp.3gpp.org/Information/Databases/Change_Request/CRDB_20260715.zip","detail_synced_at":null},{"portal_cr_id":null,"source_key":"crdb:29.281|0074|-|Rel-13","specification":"29.281","cr_number":"0074","revision":null,"target_release":"Rel-13","title":"S11-U tunneling for MO/MT data transport in control plane (SGi based)","wg_status":"revised","tsg_status":null,"clauses_affected":null,"summary_of_change":null,"source_url":"ftp://ftp.3gpp.org/Information/Databases/Change_Request/CRDB_20260715.zip","detail_synced_at":null},{"portal_cr_id":null,"source_key":"crdb:29.281|0074|1|Rel-13","specification":"29.281","cr_number":"0074","revision":"1","target_release":"Rel-13","title":"S11-U tunneling for MO/MT data transport in control plane (SGi based)","wg_status":"agreed","tsg_status":null,"clauses_affected":null,"summary_of_change":null,"source_url":"ftp://ftp.3gpp.org/Information/Databases/Change_Request/CRDB_20260715.zip","detail_synced_at":null},{"portal_cr_id":null,"source_key":"crdb:29.281|0075|-|Rel-13","specification":"29.281","cr_number":"0075","revision":null,"target_release":"Rel-13","title":"End Marker handling by MME","wg_status":"revised","tsg_status":null,"clauses_affected":null,"summary_of_change":null,"source_url":"ftp://ftp.3gpp.org/Information/Databases/Change_Request/CRDB_20260715.zip","detail_synced_at":null},{"portal_cr_id":null,"source_key":"crdb:29.281|0075|1|Rel-13","specification":"29.281","cr_number":"0075","revision":"1","target_release":"Rel-13","title":"End Marker handling by MME","wg_status":"agreed","tsg_status":null,"clauses_affected":null,"summary_of_change":null,"source_url":"ftp://ftp.3gpp.org/Information/Databases/Change_Request/CRDB_20260715.zip","detail_synced_at":null},{"portal_cr_id":null,"source_key":"crdb:29.281|0076|-|Rel-13","specification":"29.281","cr_number":"0076","revision":null,"target_release":"Rel-13","title":"Comprehension requirement for PDCP PDU Number","wg_status":"revised","tsg_status":null,"clauses_affected":null,"summary_of_change":null,"source_url":"ftp://ftp.3gpp.org/Information/Databases/Change_Request/CRDB_20260715.zip","detail_synced_at":null},{"portal_cr_id":null,"source_key":"crdb:29.281|0076|1|Rel-13","specification":"29.281","cr_number":"0076","revision":"1","target_release":"Rel-13","title":"Comprehension requirement for PDCP PDU Number","wg_status":"revised","tsg_status":null,"clauses_affected":null,"summary_of_change":null,"source_url":"ftp://ftp.3gpp.org/Information/Databases/Change_Request/CRDB_20260715.zip","detail_synced_at":null},{"portal_cr_id":null,"source_key":"crdb:29.281|0076|2|Rel-13","specification":"29.281","cr_number":"0076","revision":"2","target_release":"Rel-13","title":"Comprehension requirement for PDCP PDU Number","wg_status":"agreed","tsg_status":"approved","clauses_affected":null,"summary_of_change":null,"source_url":"ftp://ftp.3gpp.org/Information/Databases/Change_Request/CRDB_20260715.zip","detail_synced_at":null},{"portal_cr_id":null,"source_key":"crdb:29.281|0077|-|Rel-13","specification":"29.281","cr_number":"0077","revision":null,"target_release":"Rel-13","title":"18 bits PDCP PDU Number","wg_status":"revised","tsg_status":null,"clauses_affected":null,"summary_of_change":null,"source_url":"ftp://ftp.3gpp.org/Information/Databases/Change_Request/CRDB_20260715.zip","detail_synced_at":null},{"portal_cr_id":null,"source_key":"crdb:29.281|0077|1|Rel-13","specification":"29.281","cr_number":"0077","revision":"1","target_release":"Rel-13","title":"18 bits PDCP PDU Number","wg_status":"revised","tsg_status":null,"clauses_affected":null,"summary_of_change":null,"source_url":"ftp://ftp.3gpp.org/Information/Databases/Change_Request/CRDB_20260715.zip","detail_synced_at":null},{"portal_cr_id":null,"source_key":"crdb:29.281|0077|2|Rel-13","specification":"29.281","cr_number":"0077","revision":"2","target_release":"Rel-13","title":"18 bits PDCP PDU Number","wg_status":"agreed","tsg_status":"approved","clauses_affected":null,"summary_of_change":null,"source_url":"ftp://ftp.3gpp.org/Information/Databases/Change_Request/CRDB_20260715.zip","detail_synced_at":null},{"portal_cr_id":null,"source_key":"crdb:29.281|0077|3|Rel-13","specification":"29.281","cr_number":"0077","revision":"3","target_release":"Rel-13","title":"18 bits PDCP PDU Number","wg_status":"withdrawn","tsg_status":null,"clauses_affected":null,"summary_of_change":null,"source_url":"ftp://ftp.3gpp.org/Information/Databases/Change_Request/CRDB_20260715.zip","detail_synced_at":null},{"portal_cr_id":null,"source_key":"crdb:29.281|0078|-|Rel-13","specification":"29.281","cr_number":"0078","revision":null,"target_release":"Rel-13","title":"Handling of End Marker packets over S11-U by MME","wg_status":"revised","tsg_status":null,"clauses_affected":null,"summary_of_change":null,"source_url":"ftp://ftp.3gpp.org/Information/Databases/Change_Request/CRDB_20260715.zip","detail_synced_at":null},{"portal_cr_id":null,"source_key":"crdb:29.281|0078|1|Rel-13","specification":"29.281","cr_number":"0078","revision":"1","target_release":"Rel-13","title":"Handling of End Marker packets over S11-U by MME","wg_status":"agreed","tsg_status":"approved","clauses_affected":null,"summary_of_change":null,"source_url":"ftp://ftp.3gpp.org/Information/Databases/Change_Request/CRDB_20260715.zip","detail_synced_at":null},{"portal_cr_id":null,"source_key":"crdb:29.281|0079|-|Rel-13","specification":"29.281","cr_number":"0079","revision":null,"target_release":"Rel-13","title":"Error correction on recipient of an extension header of unknown type in TS29.281","wg_status":"not pursued","tsg_status":null,"clauses_affected":null,"summary_of_change":null,"source_url":"ftp://ftp.3gpp.org/Information/Databases/Change_Request/CRDB_20260715.zip","detail_synced_at":null},{"portal_cr_id":null,"source_key":"crdb:29.281|0081|-|Rel-13","specification":"29.281","cr_number":"0081","revision":null,"target_release":"Rel-13","title":"Xw RAN Container","wg_status":"agreed","tsg_status":"approved","clauses_affected":null,"summary_of_change":null,"source_url":"ftp://ftp.3gpp.org/Information/Databases/Change_Request/CRDB_20260715.zip","detail_synced_at":null},{"portal_cr_id":null,"source_key":"crdb:29.281|0090|-|Rel-13","specification":"29.281","cr_number":"0090","revision":null,"target_release":"Rel-13","title":"Change of Comprehension for ‘Long PDCP PDU Number’ extension header","wg_status":"postponed","tsg_status":null,"clauses_affected":null,"summary_of_change":null,"source_url":"ftp://ftp.3gpp.org/Information/Databases/Change_Request/CRDB_20260715.zip","detail_synced_at":null}]},"traceability_summary":{"mapped_specifications":4,"explicit_stage_classifications":0,"inferred_layer_orientations":4,"release_valid_relationships":1,"connected_work_items":31,"primary_work_item_crs":0,"release_context_crs":26},"limitations":["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."]}