Release ledger
Canonical Atlas record
TS 36.521-4
Evolved Universal Terrestrial Radio Access (E-UTRA); User Equipment (UE) conformance specification; Radio transmission and reception; Part 4: Satellite access Radio Frequency (RF) and performance Conformance Testing
Responsible WGR5
StatusUnder change control
Initial releaseRel-18
Selected releaseRel-18
Latest indexed version19.3.0
Series36
TypeTS
Release evolution
Compare evidence between releases
Use indexed version, Work Item and Change Request evidence to see what changed around this specification. This is an evidence trail, not a clause-by-clause normative diff.
Rel-18 snapshot
Work affecting this release
154 indexed Change Requests · 4 connected Work Items.
Showing 12 CR records from the available cross-release sample. Browse release CR records (JSON) →
CR 0122 rev.1 — Transmit EIRP density and other updates for band 254
CR 0116 rev.1 — Correction of 8.1.2.2 Applicability of requirements for optional UE features
CR 0120 rev.1 — Correcting references to operating bands
CR 0110 rev.1 — Core specs alignement and reference corrections for IoT NTN NS values for band 254
CR 0121 — Update to applicability of NB IoT NTN test case 8.3.1.1.2 and 8.3.1.2.1.
CR 0102 rev.1 — Transmit EIRP density and A-MPR updates for band 254
CR 0103 — UE additional maximum output power reduction updates
CR 0101 — Removal of Annex K.1
CR 0100 — Updates to complete the reference sensitivity test case with variable Tx-Rx spacing for NB-IoT for NTN bands
CR 0099 — Editorial correction in clause 5.2B
CR 0089 rev.1 — Correction of 8.1.2.2 applicability of requirements for optional UE features
CR 0096 rev.1 — Updates to Clause 5 and addition of reference sensitivity test cases with variable Tx-Rx spacing for NB-IoT for NTN bands
Version history
Indexed versions
Showing 20 of 20 indexed versions.
19.3.0Rel-19—2026-10-09
19.2.0Rel-19RAN#1122026-07-06
19.1.1Rel-19RAN#1112026-04-09
19.1.0Rel-19RAN#1112026-03-23
19.0.0Rel-19RAN#1102026-01-15
18.8.0Rel-18RAN#1102026-01-15
18.7.0Rel-18RAN#1092025-10-06
18.6.0Rel-18RAN#1082025-07-07
18.5.0Rel-18RAN#1072025-04-03
18.4.0Rel-18RAN#1062025-01-21
18.3.0Rel-18RAN#1052024-10-09
18.2.0Rel-18RAN#1042024-07-04
18.1.0Rel-18RAN#1032024-04-11
18.0.0Rel-18RAN#1022024-01-03
1.0.0Rel-18 · pre-approvalRAN#1022023-12-04
0.4.0Rel-18 · pre-approvalRAN5#1012023-12-04
0.3.0Rel-18 · pre-approvalRAN5#1002023-09-08
0.2.0Rel-18 · pre-approvalRAN5#992023-06-08
0.1.0Rel-18 · pre-approvalRAN5#982023-03-17
19.3.0Rel-19RAN#113—
Atlas classifications
Meaning and provenance
No Atlas classifications have been attached yet.
Work Items
Standards work connected to TS 36.521-4
TEI17_Test
Rel-17parsed(Small) Test Technical Enhancements and Improvements for Rel-17
IoT_NTN_FDD_LS_band-UEConTest
Rel-18parsedUE Conformance - Introduction of FDD LTE band (L+S band) for IoT NTN operation
IoT_NTN_extLband-UEConTest
Rel-18parsedUE Conformance - Introduction of the Extended L-band (UL 1668-1675MHz, DL 1518-1525MHz) for IoT NTN
LTE_NBIOT_eMTC_NTN_req-UEConTest
Rel-18officialUE Conformance - NB-IoT (Narrowband IoT)/eMTC (enhanced Machine Type Communication) core & performance requirements for Non-Terrestrial Networks (NTN)
TEI18_Test
Rel-18parsedTest - (Small) Technical Enhancements and Improvements for Rel-18
IoT_NTN_FDD_S_band-UEConTest
Rel-19parsedUE Conformance - Introduction of another IoT-NTN S-band (MSS band 2000-2020 MHz UL and 2180-2200 MHz DL)
IoT_NTN_TDD-UEConTest
Rel-19parsedUE Conformance - Introduction of IoT-NTN TDD mode
NR_IoT_NTN_req_test_enh-UEConTest
Rel-19parsedUE Conformance - Enhanced requirements and conductive test methodology for NR NTN and IoT NTN
TEI19_Test
Rel-19parsedTest - (Small) Technical Enhancements and Improvements for Rel-19
Knowledge graph
Related standards
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