Content for TR 38.858 Word version: 18.1.0
6 Subband non-overlapping full duplex (SBFD)
7 Performance evaluation and its feasibility for SBFD
8 Potential enhancements and analysis for dynamic/flexible TDD
9 Implementation feasibility of SBFD
10 Impact on RF requirements
11 Adjacent channel co-existence evaluation results
12 Regulatory aspects for deploying the duplex enhancements in TDD unpaired spectrum
13 Conclusions and recommendations
6 Subband non-overlapping full duplex (SBFD) p. 19
6.1 General aspects of SBFD schemes p. 19
6.1.1 SBFD Operations p. 19
6.1.1.1 Semi-static configuration of SBFD subbands p. 20
6.1.1.2 SBFD operation in symbols configured as DL in TDD-UL-DL-ConfigCommon p. 21
6.1.1.3 SBFD operation in symbols configured as flexible in TDD-UL-DL-ConfigCommon p. 21
6.1.1.4 Dynamic SBFD p. 21
6.1.2 Impact and potential enhancements for transmissions and receptions p. 22
6.1.3 BS self-interference due to time misalignment p. 23
6.2 Inter-UE CLI handling schemes specific for SBFD p. 26
7 Performance evaluation and its feasibility for SBFD p. 27
7.1 Deployment scenarios p. 27
7.2 Evaluation methodologies p. 28
7.3 Performance evaluation results for semi-static SBFD p. 32
7.3.1 System level simulation results p. 32
7.3.1.1 SBFD Deployment Case 1 (FR1) p. 32
7.3.1.1.1 Indoor office (FR1) p. 32
7.3.1.1.2 Urban Macro (FR1) p. 38
7.3.1.1.3 Dense Urban Macro layer (FR1) p. 53
7.3.1.1.4 Dense Urban with 2-layer (FR1) p. 62
7.3.1.2 SBFD Deployment Case 1 (FR2-1) p. 63
7.3.1.3 SBFD Deployment Case 3-2 (FR1) p. 80
7.3.1.4 SBFD Deployment Case 4 (FR1) p. 84
7.3.2 Link level evaluation results p. 108
7.3.2.1 FR1 p. 108
7.3.2.1.1 Scheme-1 (PUSCH repetition type A without joint channel estimation) p. 108
7.3.2.1.2 Scheme-2 (SBFD with TBoMS PUSCH without joint channel estimation) p. 109
7.3.2.1.3 Scheme-3 (PUSCH repetition type A with joint channel estimation) p. 110
7.3.2.1.4 Scheme-4 (SBFD with TBoMS PUSCH with joint channel estimation) p. 110
7.3.2.2 FR2-1 p. 111
7.3.2.2.1 Scheme-1 (PUSCH repetition type A without joint channel estimation) p. 111
7.3.2.2.2 Scheme-2 (SBFD with TBoMS PUSCH without joint channel estimation) p. 111
7.3.2.2.3 Scheme-3 (PUSCH repetition type A with joint channel estimation) p. 111
7.3.2.2.4 Scheme-4 (SBFD with TBoMS PUSCH with joint channel estimation) p. 112
7.4 Performance evaluation results of schemes for SBFD p. 112
7.4.1 Dynamic SBFD p. 112
7.4.1.1 Indoor office (FR1) p. 113
7.4.1.2 Urban Macro (FR1) p. 119
7.4.2 Inter-gNB CLI handling schemes p. 125
7.4.2.1 Inter-gNB CLI handling scheme 1: Spatial Domain Coordination Scheme for gNB Tx-Beam Nulling p. 125
7.4.2.1.1 Reference scheme for performance comparison p. 125
7.4.2.1.2 Proposed scheme p. 125
7.4.2.1.3 Performance evaluation or analysis p. 125
7.4.2.1.4 Specification impact of the proposed scheme p. 127
7.4.2.2 Inter-gNB CLI handling scheme 2: UL Resource Muting-based scheme for measuring the gNB-to-gNB CLI interference covariance matrix p. 127
7.4.3 Inter-UE CLI handling schemes p. 130
7.4.4 Inter-gNB and Inter-UE CLI handling schemes p. 134
8 Potential enhancements and analysis for dynamic/flexible TDD p. 135
8.1 Deployment scenarios p. 135
8.2 Evaluation methodologies p. 136
8.3 Inter-gNB CLI handling schemes p. 137
8.3.1 gNB-to-gNB co-channel CLI measurement and/or channel measurement p. 137
8.3.1.1 Description p. 137
8.3.1.2 Performance evaluation or analysis p. 138
8.3.1.3 Specification impact p. 139
8.3.1A Inter-gNB CLI scheme 1A: UL Resource Muting-based scheme for measuring the gNB-to-gNB CLI interference covariance matrix p. 139
8.3.1A.1 Reference scheme for performance comparison p. 139
8.3.1A.2 Proposed Scheme p. 139
8.3.1A.3 Performance evaluation or analysis p. 140
8.3.1A.4 Specification impact of the proposed scheme p. 144
8.3.2 Coordinated scheduling for time/frequency resources between gNBs p. 144
8.3.2.1 Description p. 144
8.3.2.2 Performance evaluation or analysis p. 144
8.3.2.3 Specification impact p. 144
8.3.2A Inter-gNB CLI scheme 2A: Time domain scheme using UL slot(s) aligned between gNBs p. 144
8.3.2A.1 Reference scheme for performance comparison p. 144
8.3.2A.2 Proposed scheme p. 145
8.3.2A.3 Performance evaluation or analysis p. 145
8.3.2A.4 Specification impact of the proposed scheme p. 146
8.3.2B Inter-gNB CLI scheme 2B: Frequency domain coordination scheme p. 146
8.3.2B.1 Reference scheme for performance comparison p. 146
8.3.2B.2 Proposed scheme p. 146
8.3.2B.3 Performance evaluation or analysis p. 147
8.3.2B.4 Specification impact of the proposed scheme p. 148
8.3.3 Spatial domain coordination method p. 148
8.3.3.1 Description p. 148
8.3.3.2 Performance evaluation or analysis p. 149
8.3.3.3 Specification impact p. 149
8.3.3A Inter-gNB CLI scheme 3A: Spatial domain coordination scheme for gNB Tx-Beam nulling p. 149
8.3.3A.1 Reference scheme for performance comparison p. 149
8.3.3A.2 Proposed Scheme p. 150
8.3.3A.3 Performance evaluation or analysis p. 150
8.3.3A.4 Specification impact of the proposed scheme p. 151
8.3.4 UE and gNB transmission and reception timing p. 151
8.3.4.1 Description p. 151
8.3.5 Power control based solution p. 151
8.3.5.1 Description p. 151
8.3.5.2 Performance evaluation or analysis p. 152
8.3.5.3 Specification impact p. 152
8.3.5A Inter-gNB CLI scheme 5A: Power control scheme based on gNB Tx power adjustment p. 152
8.3.5A.1 Reference scheme for performance comparison p. 152
8.3.5A.2 Proposed scheme p. 152
8.3.5A.3 Performance evaluation or analysis p. 152
8.3.5A.4 Specification impact of the proposed scheme p. 155
8.3.5B Inter-gNB CLI scheme 5B: Power control scheme based on UE Tx power adjustment p. 155
8.4 Inter-UE CLI handling schemes p. 159
8.4.1 UE-to-UE co-channel CLI measurement and reporting p. 159
8.4.1.1 Description p. 159
8.4.1.2 Performance evaluation or analysis p. 160
8.4.1.3 Specification impact p. 160
8.4.2 Coordinated scheduling for time/frequency resources between gNBs p. 160
8.4.2.1 Description p. 160
8.4.2.2 Performance evaluation or analysis p. 161
8.4.2.3 Specification impact p. 161
8.4.3 Spatial domain coordination method p. 161
8.4.4 UE and gNB transmission and reception timing p. 161
8.4.4.1 Description p. 161
8.4.5 Power control based solution p. 161
8.4.5.1 Description p. 161
8.4.5.2 Performance evaluation or analysis p. 161
8.4.5.3 Specification impact p. 161
9 Implementation feasibility of SBFD p. 162
9.1 Background for analysis p. 162
9.2 Feasibility of FR1 wide area BS aspects p. 164
9.2.1 Self-interference analysis p. 165
9.2.1.1 Summary table for self-interference analysis p. 165
9.2.1.2 Feasibility study on self-interference p. 170
9.2.1.2.1 Samsung p. 170
9.2.1.2.2 Ericsson p. 176
9.2.1.2.3 Huawei p. 179
9.2.1.2.4 Qualcomm p. 180
9.2.1.2.5 CATT p. 183
9.2.1.2.6 Nokia p. 183
9.2.1.3 Conclusion p. 187
9.2.2 Co-channel inter-sub-band co-site inter-sector interference analysis p. 187
9.2.2.1 Summary table for co-channel inter-sub-band co-site inter-sector interference analysis p. 187
9.2.2.2 Feasibility study on co-channel inter-sub-band co-site inter-sector interference p. 192
9.2.2.3 Conclusion p. 198
9.2.3 Co-channel inter-sub-band inter-site interference analysis p. 198
9.2.4 Summary p. 198
9.3 Feasibility of FR1 medium range BS aspects p. 199
9.3.1 Self-interference analysis p. 199
9.3.1.1 Summary table for self-interference analysis p. 199
9.3.1.2 Feasibility study on self-interference p. 204
9.3.1.2.1 Nokia p. 204
9.3.1.2.2 Ericsson p. 204
9.3.1.2.3 ZTE p. 205
9.3.1.2.4 Samsung p. 205
9.3.1.2.5 Huawei p. 205
9.3.1.3 Conclusion p. 205
9.3.2 Co-channel inter-sub-band co-site inter-sector interference analysis p. 206
9.3.2.1 Summary table for co-channel inter-subband co-site inter-sector interference analysis p. 206
9.3.2.2 Feasibility study on co-channel inter-subband co-site inter-sector interference analysis p. 208
9.3.2.3 Conclusion p. 209
9.3.3 Co-channel inter-sub-band inter-site interference analysis p. 209
9.3.4 Summary p. 210
9.4 Feasibility of FR1 local area BS aspects p. 210
9.4.1 Self-interference analysis p. 210
9.4.1.1 Summary table for self-interference analysis p. 210
9.4.1.2 Feasibility study on self-interference p. 215
9.4.1.2.1 Ericsson p. 215
9.4.1.2.2 CATT p. 215
9.4.1.2.3 Nokia p. 216
9.4.1.2.4 ZTE p. 216
9.4.1.2.5 Huawei p. 216
9.4.1.3 Conclusion p. 216
9.4.2 Co-channel inter-sub-band inter-site interference analysis p. 216
9.4.3 Summary p. 216
9.5 Feasibility of FR2-1 BS aspects p. 217
9.5.1 Self-interference analysis p. 217
9.5.1.1 Summary table for self-interference analysis p. 217
9.5.1.2 Feasibility study on self-interference p. 219
9.5.1.2.1 Samsung p. 219
9.5.1.2.2 Huawei p. 221
9.5.1.2.3 Qualcomm p. 221
9.5.1.2.4 Ericsson p. 223
9.5.1.2.5 Nokia p. 224
9.5.1.3 Conclusion p. 225
9.5.2 Co-channel inter-sub-band co-site inter-sector interference analysis p. 225
9.5.2.1 Summary table for co-channel inter-sub-band co-site inter-sector interference analysis p. 225
9.5.2.2 Feasibility study on co-channel inter-sub-band co-site inter-sector interference p. 227
9.5.2.3 Conclusion p. 229
9.5.3 Co-channel inter-sub-band inter-site interference analysis p. 229
9.5.4 Summary p. 229
9.6 FR1 Feasibility of UE aspects p. 230
9.6.1 Interference analysis p. 230
9.6.1.1 General p. 230
9.6.1.2 UE-UE co-channel inter-subband CLI modeling p. 230
9.6.1.2.1 Overview and analysis framework p. 230
9.6.1.2.2 UE co-channel Tx model p. 231
9.6.1.2.3 UE co-channel Rx model p. 231
9.6.1.3 UE-UE adjacent channel CLI modelling p. 232
9.6.2 Summary p. 233
9.7 FR2-1 feasibility of UE aspects p. 233
9.7.1 Interference analysis p. 233
9.7.1.1 UE-UE co-channel inter-subband CLI modeling p. 233
9.7.1.1.1 Receiver aspects p. 233
9.7.1.1.2 Transmitter aspects p. 234
9.7.1.2 UE-UE adjacent channel CLI modeling p. 235
9.7.1.2.1 Receiver aspects p. 235
9.7.1.2.2 Transmitter aspects p. 235
9.7.2 Summary p. 235
10 Impact on RF requirements p. 236
10.1 Impact on BS RF requirements p. 236
10.1.1 General p. 236
10.1.2 Impact on BS TX requirements p. 236
10.1.2.1 Base Station output power and radiated transmit power p. 236
10.1.2.2 Output power dynamics p. 236
10.1.2.3 Transmit ON/OFF power p. 237
10.1.2.4 Transmitted signal quality p. 237
10.1.2.5 Unwanted emissions p. 237
10.1.2.6 Transmitter intermodulation p. 237
10.1.3 Impact on BS RX requirements p. 237
10.1.3.1 Reference sensitivity level and OTA sensitivity p. 237
10.1.3.2 Dynamic range p. 238
10.1.3.3 In-band selectivity and blocking p. 238
10.1.3.4 Out-of-band blocking p. 238
10.1.3.5 Receiver spurious emissions p. 238
10.1.3.6 Receiver intermodulation p. 238
10.1.3.7 In-channel selectivity p. 238
10.1.4 Potentially new requirements for SBFD operation p. 239
10.2 Impact on UE RF requirements p. 239
11 Adjacent channel co-existence evaluation results p. 240
12 Regulatory aspects for deploying the duplex enhancements in TDD unpaired spectrum p. 245
12.1 ITU Region 1 p. 245
12.1.1 Europe p. 245
12.2 ITU Region 2 p. 245
12.2.1 North America p. 245
12.3 ITU Region 3 p. 246
12.3.1 Australia p. 246
12.3.2 China p. 246
12.3.3 India p. 246
12.3.4 Japan p. 246
12.3.5 Korea p. 246
12.3.6 New Zealand p. 247
12.4 Summary p. 247
13 Conclusions and recommendations p. 248
13.1 SBFD p. 248
13.1.1 RAN1 p. 248
13.1.1.1 UPT performance p. 248
13.1.1.2 Coverage performance p. 256
13.1.1.3 SBFD operation scheme p. 256
13.1.1.4 CLI handling scheme p. 256
13.1.2 RAN4 p. 256
13.2 Dynamic/flexible TDD p. 257
