ETSI TS 136 133 V18.12.0 (2026-03)

LTE; Evolved Universal Terrestrial Radio Access (E-UTRA); Requirements for support of radio resource management (3GPP TS 36.133 version 18.12.0 Release 18)

RTS/TSGR-0436133vic0

General Information

• Status: Not Published
• Technical Committee: 3GPP RAN 4 - Specification for radio performance
• Current Stage: 12 - Citation in the OJ (auto-insert)
• Completion Date: 06-Mar-2026

Standards Content (Sample)

TECHNICAL SPECIFICATION
LTE;
Evolved Universal Terrestrial Radio Access (E-UTRA);
Requirements for support of radio resource management
(3GPP TS 36.133 version 18.12.0 Release 18)

3GPP TS 36.133 version 18.12.0 Release 18 1 ETSI TS 136 133 V18.12.0 (2026-03)

Reference
RTS/TSGR-0436133vic0
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LTE
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ETSI
3GPP TS 36.133 version 18.12.0 Release 18 2 ETSI TS 136 133 V18.12.0 (2026-03)
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ETSI
3GPP TS 36.133 version 18.12.0 Release 18 3 ETSI TS 136 133 V18.12.0 (2026-03)
Contents
Intellectual Property Rights . 2
Legal Notice . 2
Modal verbs terminology . 2
Foreword . 106
1 Scope . 108
2 References . 108
3 Definitions, symbols and abbreviations . 110
3.1 Definitions . 110
3.2 Symbols . 112
3.3 Abbreviations . 113
3.4 Test tolerances . 116
3.5 Additional notation . 116
3.5.1 Groups of bands . 116
3.5.1A Groups of bands for satellite access . 118
3.6 General . 119
3.6.1 Applicability of requirements in this specification version . 119
3.6.1.1 Applicability of requirements for UE capable of network-based CRS interference mitigation . 125
3.6.1.2 Applicability of requirements with CRS muting for category M1 UE capable of CRS muting . 127
3.6.1.3 Applicability of requirements with CRS muting for category M2 UE capable of CRS muting . 128
3.6.2 Applicability of requirements for EN-DC operation . 129
3.6.3 Applicability of requirements for NE-DC operation . 130
3.6.4 Applicability of requirements for NGEN-DC operation . 131
3.6.5 Applicability of 2-step RA and 4-step RA in RRM requirements . 131
3.6.6 Void 131
3.6.7 Applicability of NB-IoT inband operation in NTN NR . 131
Rel-18 UEs supporting only standalone operation do not need to be tested for in-band operation with NR over
NTN. In-band operation with NR NTN is not supported in Rel-17. . 131
4 E-UTRAN RRC_IDLE state mobility. 131
4.1 Cell Selection . 131
4.2 Cell Re-selection . 132
4.2.1 Introduction. 132
4.2.2 Requirements . 132
4.2.2.1 Measurement and evaluation of serving cell . 133
4.2.2.2 Void. 134
4.2.2.3 Measurements of intra-frequency E-UTRAN cells . 134
4.2.2.4 Measurements of inter-frequency E-UTRAN cells . 136
4.2.2.5 Measurements of inter-RAT cells . 138
4.2.2.5.1 Measurements of UTRAN FDD cells. 138
4.2.2.5.2 Measurements of UTRAN TDD cells . 140
4.2.2.5.3 Measurements of GSM cells . 141
4.2.2.5.4 Measurements of HRPD cells . 142
4.2.2.5.5 Measurements of cdma2000 1X . 143
4.2.2.5.6 Measurements of NR cells . 144
4.2.2.5.7 Measurements of NR cells subject to CCA . 147
4.2.2.5.8 Measurements of NR cells for RedCap . 149
4.2.2.6 Evaluation of cell re-selection criteria. 151
4.2.2.7 Maximum interruption in paging reception . 151
4.2.2.8 void . 152
4.2.2.9 UE measurement capability . 152
4.2.2.9a UE measurement capability (Increased UE carrier monitoring) . 153
4.2.2.10 Reselection to CSG cells . 153
4.2.2.10.1 Reselection from a non CSG to an inter-frequency CSG cell. 153
4.2.2.10.2 Reselection from a non CSG to an inter-RAT UTRAN FDD CSG cell . 154
4.2.2.11 Void. 155
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3GPP TS 36.133 version 18.12.0 Release 18 4 ETSI TS 136 133 V18.12.0 (2026-03)
4.2.2.12 Void. 155
4.2.2.13 Void. 155
4.2.2.14 UE measurement capability for RedCap . 155
4.3 Minimization of Drive Tests (MDT) . 155
4.3.1 Introduction. 155
4.3.2 Measurements . 156
4.3.2.1 Requirements . 156
4.3.3 Relative Time Stamp Accuracy . 156
4.3.3.1 Requirements . 156
4.3.4 Relative Time Stamp Accuracy for RRC Connection Establishment Failure Log Reporting . 156
4.3.4.1 Requirements . 156
4.3.5 Relative Time Stamp Accuracy for Radio Link Failure and Handover Failure Log Reporting . 156
4.3.5.1 Requirements for timeSinceFailure. 156
4.4 MBSFN Measurements . 157
4.4.1 Introduction. 157
4.4.2 MBSFN RSRP measurements . 157
4.4.3 MBSFN RSRQ measurements . 157
4.4.4 MCH BLER measurements . 157
4.5 Proximity-based Services . 158
4.5.1 Introduction. 158
4.5.2 Requirements . 158
4.5.2.1 Interruptions with ProSe Direct Discovery . 158
4.5.2.2 Interruptions with ProSe Direct Communication . 158
4.5.2.3 Initiation/Cease of SLSS transmissions with ProSe Direct Discovery . 158
4.5.2.4 Initiation/Cease of SLSS transmissions with ProSe Direct Communication . 159
4.6 Cell Selection and Re-selection Requirements for UE category NB1 . 159
4.6.1 Cell Selection . 159
4.6.2 Cell Re-selection . 159
4.6.2.1 Measurement and evaluation of serving NB-IoT cell for UE category NB1 in normal coverage . 159
4.6.2.1A Measurement and evaluation of serving NB-IoT cell for HD-FDD UE category NB1 in normal
coverage when configured with WUS. 161
4.6.2.2 Measurements of intra-frequency NB-IoT cells for UE category NB1 in normal coverage . 162
4.6.2.3 Measurement and evaluation of serving NB-IoT cell for UE category NB1 in enhanced coverage . 163
4.6.2.3A Measurement and evaluation of serving NB-IoT cell for HD-FDD UE category NB1 in enhanced
coverage when configured with WUS. 164
4.6.2.4 Measurements of intra-frequency NB-IoT cells for UE category NB1 in enhanced coverage . 165
4.6.2.5 Measurements of inter-frequency NB cells for UE category NB1 in normal coverage . 167
4.6.2.6 Measurements of inter-frequency NB-IoT cells for UE category NB1 in enhanced coverage . 168
4.6.2.7 Maximum interruption in paging reception in normal coverage . 169
4.6.2.7A Maximum interruption in paging reception in enhanced coverage . 169
4.6.2.8 UE measurement capability . 169
4.6.2.9 WUS receptions for NB1 . 170
4.6.3 Requirements for transmission using preconfigured uplink resources for UE category NB1 . 170
4.6.3.1 Introduction . 170
4.6.3.2 Requirements on UE synchronization for transmission using PUR . 170
4.6.3.3 Requirements on TA validation for transmission using PUR . 170
4.6A Cell Selection and Re-selection Requirements for UE category NB-IoT for Satellite Access . 171
4.6A.1 Cell Selection . 171
4.6A.2 Cell Re-selection for UE category NB-IoT for Satellite Access . 171
4.6A.2.1 Measurement and evaluation of serving NB-IoT cell for UE category NB1 in normal coverage . 172
4.6A.2.1A Measurement and evaluation of serving NB-IoT cell for HD-FDD UE category NB1 in normal
coverage when configured with WUS. 173
4.6A.2.2 Measurements of intra-frequency NB-IoT cells for UE category NB1 in normal coverage . 174
4.6A.2.3 Measurement and evaluation of serving NB-IoT cell for UE category NB1 in enhanced coverage . 176
4.6A.2.3A Measurement and evaluation of serving NB-IoT cell for HD-FDD UE category NB1 in enhanced
coverage when configured with WUS. 178
4.6A.2.4 Measurements of intra-frequency NB-IoT cells for UE category NB1 in enhanced coverage . 179
4.6A.2.5 Measurements of inter-frequency NB cells for UE category NB1 in normal coverage . 181
4.6A.2.6 Measurements of inter-frequency NB-IoT cells for UE category NB1 in enhanced coverage . 183
4.6A.2.7 Maximum interruption in paging reception in normal coverage . 185
4.6A.2.7A Maximum interruption in paging reception in enhanced coverage . 185
4.6A.2.8 UE measurement capability . 186
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4.6A.2.9 WUS receptions for NB1 . 186
4.6A.3 Requirements for transmission using preconfigured uplink resources for UE category NB-IoT for

Satellite Access . 186
4.6A.3.1 Introduction . 186
4.6A.3.2 Requirements on UE synchronization for transmission using PUR . 186
4.6A.3.3 Requirements on TA validation for transmission using PUR . 187
4.7 Cell Selection and Re-selection Requirements for UE category M1 . 187
4.7.1 Cell Selection . 187
4.7.2 Cell Re-selection . 187
4.7.2.1 Cell Re-selection requirements for UE category M1 in normal coverage . 187
4.7.2.1.1 Measurement and evaluation of serving cell for UE category M1 in normal coverage . 187
4.7.2.1.1A Relaxed measurement and evaluation of serving cell for UE category M1 in normal coverage . 188
4.7.2.1.2 Measurements of intra-frequency cells for UE category M1 in normal coverage . 189
4.7.2.1.3 Measurements of inter-frequency cells for UE category M1 in normal coverage . 190
4.7.2.1.4 Maximum allowed layers for multiple monitoring for UE category M1 in normal coverage . 192
4.7.2.1.5 Maximum interruption in paging reception for Category M1 UEs in normal coverage . 192
4.7.2.2 Cell Re-selection requirements for UE category M1 in enhanced coverage . 193
4.7.2.2.1 Measurement and evaluation of serving cell for UE category M1 in enhanced coverage . 193
4.7.2.2.1A Relaxed measurement and evaluation of serving cell for UE category M1 in enhaned
coverage. 194
4.7.2.2.2 Measurements of intra-frequency cells for UE category M1 in enhanced coverage . 195
4.7.2.2.3 Measurements of inter-frequency cells for UE category M1 in enhanced coverage . 197
4.7.2.2.4 Maximum allowed layers for multiple monitoring for UE category M1 in enhanced coverage . 199
4.7.2.2.5 Maximum interruption in paging reception for Category M1 UEs in enhanced coverage . 199
4.7.2.3 WUS receptions for UE category M1 . 200
4.7.3 Channel quality report for UE Category M1 in idle mode . 200
4.7.4 Requirements for transmission using preconfigured uplink resources for UE category M1 . 201
4.7.4.1 Introduction . 201
4.7.4.2 Requirements on UE synchronization for transmission using PUR . 201
4.7.4.3 Requirements on TA validation for transmission using PUR . 201
4.7A Cell Selection and Re-selection Requirements for UE category M1 for Satellite Access . 202
4.7A.1 Cell Selection . 202
4.7A.2 Cell Re-selection for UE category M1 for Satellite Access . 202
4.7A.2.1 Cell Re-selection requirements for UE category M1 in normal coverage . 203
4.7A.2.1.1 Measurement and evaluation of serving cell for UE category M1 in normal coverage . 203
4.7A.2.1.1A Relaxed measurement and evaluation of serving cell for UE category M1 in normal coverage . 205
4.7A.2.1.2 Measurements of intra-frequency cells for UE category M1 in normal coverage . 206
4.7A.2.1.3 Measurements of inter-frequency cells for UE category M1 in normal coverage . 209
4.7A.2.1.4 Maximum allowed layers for multiple monitoring for UE category M1 in normal coverage . 211
4.7A.2.1.5 Maximum interruption in paging reception for Category M1 UEs in normal coverage . 211
4.7A.2.2 Cell Re-selection requirements for UE category M1 in enhanced coverage . 212
4.7A.2.2.1 Measurement and evaluation of serving cell for UE category M1 in enhanced coverage . 212
4.7A.2.2.1A Relaxed measurement and evaluation of serving cell for UE category M1 in enhaned
coverage. 213
4.7A.2.2.2 Measurements of intra-frequency cells for UE category M1 in enhanced coverage . 215
4.7A.2.2.3 Measurements of inter-frequency cells for UE category M1 in enhanced coverage . 217
4.7A.2.2.4 Maximum allowed layers for multiple monitoring for UE category M1 in enhanced coverage . 220
4.7A.2.2.5 Maximum interruption in paging reception for Category M1 UEs in enhanced coverage . 220
4.7A.2.3 WUS receptions for UE category M1 . 221
4.7A.3 Channel quality report for UE Category M1 in idle mode for Satellite Access . 221
4.7A.4 Requirements for transmission using preconfigured uplink resources for UE category M1 for
Satellite Access . 222
4.7A.4.1 Introduction . 222
4.7A.4.2 Requirements on UE synchronization for transmission using PUR . 222
4.7A.4.3 Requirements on TA validation for transmission using PUR . 222
4.8 Idle State Positioning Measurement Requirements for UE category NB1 . 222
4.8.1 OTDOA Intra-Frequency RSTD Measurements for UE category NB1 for normal coverage . 222
4.8.1.1 RSTD Measurement Reporting Delay . 224
4.8.2 OTDOA Intra-Frequency RSTD Measurements for UE category NB1 for enhanced coverage . 224
4.8.2.1 RSTD Measurement Reporting Delay . 225
4.8.3 OTDOA Inter-Frequency RSTD Measurements for UE category NB1 for normal coverage . 226
4.8.3.1 RSTD Measurement Reporting Delay . 227
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4.8.4 OTDOA Inter-Frequency RSTD Measurements for UE category NB1 for enhanced coverage . 228
4.8.4.1 RSTD Measurement Reporting Delay . 229
4.8.5 Intra-Frequency E-CID NRSRP and NRSRQ Measurements for UE category NB2 for normal
coverage . 229
4.8.5.1 Measurement Reporting Delay. 230
4.8.6 Intra-Frequency E-CID NRSRP and NRSRQ Measurements for UE category NB2 for enhanced
coverage . 231
4.8.6.1 Measurement Reporting Delay. 232
4.8.7 Inter-Frequency E-CID NRSRP and NRSRQ Measurements for UE category NB2 for normal
coverage . 232
4.8.7.1 Measurement Reporting Delay. 233
4.8.8 Inter-Frequency E-CID NRSRP and NRSRQ Measurements for UE category NB2 for enhanced
coverage . 234
4.8.8.1 Measurement Reporting Delay. 235
4.9 Idle Mode CA Measurement . 235
4.9.1 Introduction. 235
4.9.2 Requirement . 236
4.9.2.1 Detected cell requirement during state transition and Idle mode . 236
4.9.2.2 Measurements of inter-frequency CA candidate cells . 236
4.9.2.3 Measurements on serving cell . 237
4A E-UTRAN RRC_INACTIVE state mobility . 238
4A.1 Cell Re-selection . 238
4A.1.1 Introduction. 238
4A.1.2 Requirements . 238
4A.1.2.1 UE measurement capability . 238
4A.1.2.2 Measurement and evaluation of serving cell . 238
4A.1.2.3 Measurements of intra-frequency E-UTRAN cells . 238
4A.1.2.4 Measurements of inter-frequency E-UTRAN cells . 239
4A.1.2.5 Evaluation of cell re-selection criteria. 239
4A.1.2.6 Maximum interruption in paging reception . 239
4A.1.2.7 Measurements of inter-RAT NR cells . 239
4A.1.2.8 UE measurement capability for RedCap . 239
4A.1.2.9 Measurements of inter-RAT NR cells for RedCap . 239
4A.2 Requirements for UE Category M1 . 240
4A.2.1 Introduction. 240
4A.2.2 Cell Selection . 240
4A.2.3 Cell Reselection . 240
4A.2.3.1 Cell Re-selection requirements for UE category M1 in normal coverage . 240
4A.2.3.1.1 Measurement and evaluation of serving cell for UE category M1 in normal coverage . 240
4A.2.3.1.2 Measurements of intra-frequency cells for UE category M1 in normal coverage . 240
4A.2.3.1.3 Measurements of inter-frequency cells for UE category M1 in normal coverage . 241
4A.2.3.1.4 Maximum allowed layers for multiple monitoring for UE category M1 in normal coverage . 241
4A.2.3.1.5 Maximum interruption in paging reception for Category M1 UEs in normal coverage . 241
4A.2.4 Channel quality report for UE Category M1 in idle mode . 243
5 E-UTRAN RRC_CONNECTED state mobility . 243
5.1 E-UTRAN Handover . 243
5.1.1 Introduction. 243
5.1.2 Requirements . 243
5.1.2.1 E-UTRAN FDD – FDD . 243
5.1.2.1.1 Handover delay . 243
5.1.2.1.2 Interruption time . 244
5.1.2.2 E-UTRAN FDD – TDD . 245
5.1.2.2.1 (Void) . 245
5.1.2.2.2 (Void) . 245
5.1.2.3 E-UTRAN TDD – FDD . 245
5.1.2.3.1 (Void) . 245
5.1.2.3.2 (Void) . 245
5.1.2.4 E-UTRAN TDD – TDD . 245
5.1.2.4.1 Handover delay . 245
5.1.2.4.2 Interruption time . 246
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5.1.2.5 E-UTRAN HD–FDD . 247
5.1.2.5.1 Handover delay . 247
5.1.2.5.2 Interruption time . 248
5.1.2.6 E-UTRAN FDD – FDD conditional handover . 249
5.1.2.6.1 Handover delay . 249
5.1.2.6.2 Measurement time . 249
5.1.2.6.3 Preparation time. 250
5.1.2.6.4 Interruption time . 250
5.1.2.7 E-UTRAN FDD – TDD conditional handover . 250
5.1.2.8 E-UTRAN TDD – FDD conditional handover . 250
5.1.2.9 E-UTRAN TDD – TDD conditional handover . 250
5.2 Void . 250
5.3 Handover to other RATs . 250
5.3.1 E-UTRAN - UTRAN FDD Handover . 250
5.3.1.1 Introduction . 250
5.3.1.1.1 Handover delay . 251
5.3.1.1.2 Interruption time . 251
5.3.2 E-UTRAN - UTRAN TDD Handover . 251
5.3.2.1 Introduction . 251
5.3.2.2 Requirements . 251
5.3.2.2.1 Handover delay . 252
5.3.2.2.2 Interruption time . 252
5.3.3 E-UTRAN - GSM Handover . 252
5.3.3.1 Introduction . 252
5.3.3.2 Requirements . 252
5.3.3.2.1 Handover delay . 252
5.3.3.2.2 Interruption time . 253
5.3.4 E-UTRAN - NR FR1 Handover . 253
5.3.4.1 Introduction . 253
5.3.4.2 Handover delay . 253
5.3.4.3 Interruption time . 253
5.3.4A E-UTRAN - NR FR1 Handover to target cell using CCA . 254
5.3.4A.1 Introduction .
...