{"id":8674,"number":"38.844","type":"TR","title":"Study on Efficient utilization of licensed spectrum that is not aligned with existing NR channel bandwidth","series":38,"status":"Under change control","initial_release":"Rel-17","primary_group":"R4","secondary_groups":[],"portal_id":3835,"portal_url":"https://portal.3gpp.org/desktopmodules/Specifications/SpecificationDetails.aspx?specificationId=3835","dynareport_url":"https://www.3gpp.org/dynareport/38844.htm","publication_scope":null,"radio_technologies":[],"first_seen_at":"2026-09-16T11:05:14.377089+00:00","updated_at":"2026-10-16T09:35:23.765577+00:00","raw_metadata":{"source_url":"https://portal.3gpp.org/desktopmodules/Specifications/SpecificationDetails.aspx?specificationId=3835","bibliography_source":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv"},"detail_synced_at":"2026-10-08T02:41:07.434471+00:00","versions":[{"release":"Rel-18","version":"18.0.0","meeting":"RAN#99","upload_date":"2023-04-05","comment":"","official_file_url":"https://www.3gpp.org/ftp/Specs/archive/38_series/38.844/38844-i00.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":null,"version_status":null},{"release":"Rel-18","version":"1.0.1","meeting":"RAN#99","upload_date":"2023-04-04","comment":"","official_file_url":"https://www.3gpp.org/ftp/Specs/archive/38_series/38.844/38844-101.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":null,"version_status":"pre-approval"},{"release":"Rel-18","version":"1.0.0","meeting":"RAN#99","upload_date":"2023-04-04","comment":"","official_file_url":"https://www.3gpp.org/ftp/Specs/archive/38_series/38.844/38844-100.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":null,"version_status":"pre-approval"},{"release":"Rel-18","version":"0.1.0","meeting":"RAN4#106","upload_date":"2023-03-16","comment":"","official_file_url":"https://www.3gpp.org/ftp/Specs/archive/38_series/38.844/38844-010.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":null,"version_status":"pre-approval"},{"release":"Rel-18","version":"0.0.9","meeting":"RAN4#104-e","upload_date":"2022-09-12","comment":"","official_file_url":"https://www.3gpp.org/ftp/Specs/archive/38_series/38.844/38844-009.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":null,"version_status":"pre-approval"},{"release":"Rel-18","version":"0.0.8","meeting":"RAN4#103-e","upload_date":"2022-04-25","comment":"","official_file_url":"https://ftp.3gpp.org//Specs/archive/38_series/38.844/38844-008.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":null,"version_status":"pre-approval"},{"release":"Rel-17","version":"0.0.6","meeting":"RAN4#101-bis-e","upload_date":"2022-01-10","comment":"","official_file_url":"https://ftp.3gpp.org//Specs/archive/38_series/38.844/38844-006.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":null,"version_status":"pre-approval"},{"release":"Rel-17","version":"0.0.5","meeting":"RAN4#101-e","upload_date":"2021-11-23","comment":"","official_file_url":"https://www.3gpp.org/ftp/Specs/archive/38_series/38.844/38844-005.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":null,"version_status":"pre-approval"},{"release":"Rel-17","version":"0.0.4","meeting":"RAN4#100-e","upload_date":"2021-09-09","comment":"","official_file_url":"https://www.3gpp.org/ftp/Specs/archive/38_series/38.844/38844-004.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":null,"version_status":"pre-approval"},{"release":"Rel-17","version":"0.0.3","meeting":"RAN4#99-e","upload_date":"2021-05-11","comment":"","official_file_url":"https://www.3gpp.org/ftp/Specs/archive/38_series/38.844/38844-003.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":null,"version_status":"pre-approval"},{"release":"Rel-17","version":"0.0.2","meeting":"RAN4#98-e","upload_date":"2021-01-15","comment":"","official_file_url":"https://www.3gpp.org/ftp/Specs/archive/38_series/38.844/38844-002.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":null,"version_status":"pre-approval"}],"release_presence":[{"release":"Rel-17","first_version_date":"2021-01-15","latest_version_date":"2022-01-10","first_version":"0.0.2","latest_version":"0.0.6","version_count":5},{"release":"Rel-18","first_version_date":"2022-04-25","latest_version_date":"2023-04-05","first_version":"0.0.8","latest_version":"18.0.0","version_count":6}],"classifications":[],"work_items":[{"uid":890040,"acronym":"FS_NR_eff_BW_util","effective_acronym":"FS_NR_eff_BW_util","title":"Study on efficient utilization of licensed spectrum that is not aligned with existing NR channel bandwidths","responsible_groups":["R4"],"release":"Rel-18","status":"PCG approved","wi_level":"Feature (1st level)","type":"Work Item","first_release":null,"last_release":null,"provenance_type":"official","source_url":"https://portal.3gpp.org/desktopmodules/Specifications/SpecificationDetails.aspx?specificationId=3835","association_sources":[],"association_status":"historical_unverified"}],"change_requests":[],"relationships":[],"relationship_release_evidence_summary":[],"relationship_release_evidence":[],"relationship_release_evidence_meta":{"total":0,"returned_count":0,"limit":100,"truncated":false,"href":"/api/specs/38.844/relationship-evidence"}}