Content for TS 36.423 Word version: 18.2.0
9 Elements for X2AP Communication
9.0 General
9.1 Message Functional Definition and Content
9.1.1 Messages for Basic Mobility Procedures
9.1.2 Messages for global procedures
9.1.3 Messages for Dual Connectivity Procedures
9.1.4 Messages for E-UTRAN-NR Dual Connectivity Procedures
9.1.5 Messages for IAB Procedures
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9 Elements for X2AP Communication p. 122
9.0 General p. 122
9.1 Message Functional Definition and Content p. 123
9.1.1 Messages for Basic Mobility Procedures p. 123
9.1.1.1 HANDOVER REQUEST p. 123
9.1.1.2 HANDOVER REQUEST ACKNOWLEDGE p. 126
9.1.1.3 HANDOVER PREPARATION FAILURE p. 127
9.1.1.4 SN STATUS TRANSFER p. 128
9.1.1.5 UE CONTEXT RELEASE p. 131
9.1.1.6 HANDOVER CANCEL p. 131
9.1.1.7 HANDOVER SUCCESS |R16| p. 132
9.1.1.8 CONDITIONAL HANDOVER CANCEL |R16| p. 132
9.1.1.9 EARLY STATUS TRANSFER |R16| p. 133
9.1.2 Messages for global procedures p. 135
9.1.2.1 LOAD INFORMATION p. 135
9.1.2.2 ERROR INDICATION p. 136
9.1.2.3 X2 SETUP REQUEST p. 137
9.1.2.4 X2 SETUP RESPONSE p. 138
9.1.2.5 X2 SETUP FAILURE p. 139
9.1.2.6 RESET REQUEST p. 139
9.1.2.7 RESET RESPONSE p. 139
9.1.2.8 ENB CONFIGURATION UPDATE p. 140
9.1.2.9 ENB CONFIGURATION UPDATE ACKNOWLEDGE p. 142
9.1.2.10 ENB CONFIGURATION UPDATE FAILURE p. 142
9.1.2.11 RESOURCE STATUS REQUEST p. 142
9.1.2.12 RESOURCE STATUS RESPONSE p. 144
9.1.2.13 RESOURCE STATUS FAILURE p. 145
9.1.2.14 RESOURCE STATUS UPDATE p. 147
9.1.2.15 MOBILITY CHANGE REQUEST |R9| p. 147
9.1.2.16 MOBILITY CHANGE ACKNOWLEDGE |R9| p. 148
9.1.2.17 MOBILITY CHANGE FAILURE |R9| p. 148
9.1.2.18 RLF INDICATION |R9| p. 148
9.1.2.19 HANDOVER REPORT |R9| p. 149
9.1.2.20 CELL ACTIVATION REQUEST |R9| p. 151
9.1.2.21 CELL ACTIVATION RESPONSE |R9| p. 151
9.1.2.22 CELL ACTIVATION FAILURE |R9| p. 152
9.1.2.23 X2 RELEASE |R12| p. 152
9.1.2.24 X2AP MESSAGE TRANSFER |R12| p. 152
9.1.2.25 X2 REMOVAL REQUEST |R12| p. 152
9.1.2.26 X2 REMOVAL RESPONSE |R12| p. 152
9.1.2.27 X2 REMOVAL FAILURE |R12| p. 153
9.1.2.28 RETRIEVE UE CONTEXT REQUEST |R13| p. 153
9.1.2.29 RETRIEVE UE CONTEXT RESPONSE |R13| p. 154
9.1.2.30 RETRIEVE UE CONTEXT FAILURE |R13| p. 156
9.1.2.31 EN-DC X2 SETUP REQUEST |R15| p. 156
9.1.2.32 EN-DC X2 SETUP RESPONSE |R15| p. 157
9.1.2.33 EN-DC X2 SETUP FAILURE |R15| p. 158
9.1.2.34 EN-DC CONFIGURATION UPDATE |R15| p. 159
9.1.2.35 EN-DC CONFIGURATION UPDATE ACKNOWLEDGE |R15| p. 161
9.1.2.36 EN-DC CONFIGURATION UPDATE FAILURE |R15| p. 161
9.1.2.37 EN-DC CELL ACTIVATION REQUEST |R15| p. 162
9.1.2.38 EN-DC CELL ACTIVATION RESPONSE |R15| p. 162
9.1.2.39 EN-DC CELL ACTIVATION FAILURE |R15| p. 162
9.1.2.40 EN-DC X2 REMOVAL REQUEST |R15| p. 163
9.1.2.41 EN-DC X2 REMOVAL RESPONSE |R15| p. 163
9.1.2.42 EN-DC X2 REMOVAL FAILURE |R15| p. 163
9.1.2.43 DATA FORWARDING ADDRESS INDICATION |R15| p. 164
9.1.2.44 EN-DC CONFIGURATION TRANSFER |R15| p. 165
9.1.2.45 EN-DC RESOURCE STATUS REQUEST |R16| p. 165
9.1.2.46 EN-DC RESOURCE STATUS RESPONSE |R16| p. 167
9.1.2.47 EN-DC RESOURCE STATUS FAILURE |R16| p. 167
9.1.2.48 EN-DC RESOURCE STATUS UPDATE |R16| p. 168
9.1.2.49 CELL TRAFFIC TRACE |R16| p. 169
9.1.2.50 ACCESS AND MOBILITY INDICATION |R17| p. 169
9.1.2.51 RACH INDICATION |R18| p. 170
9.1.3 Messages for Dual Connectivity Procedures |R12| p. 170
9.1.3.1 SENB ADDITION REQUEST p. 170
9.1.3.2 SENB ADDITION REQUEST ACKNOWLEDGE p. 172
9.1.3.3 SENB ADDITION REQUEST REJECT p. 174
9.1.3.4 SENB RECONFIGURATION COMPLETE p. 174
9.1.3.5 SENB MODIFICATION REQUEST p. 175
9.1.3.6 SENB MODIFICATION REQUEST ACKNOWLEDGE p. 177
9.1.3.7 SENB MODIFICATION REQUEST REJECT p. 180
9.1.3.8 SENB MODIFICATION REQUIRED p. 180
9.1.3.9 SENB MODIFICATION CONFIRM p. 181
9.1.3.10 SENB MODIFICATION REFUSE p. 181
9.1.3.11 SENB RELEASE REQUEST p. 182
9.1.3.12 SENB RELEASE REQUIRED p. 182
9.1.3.13 SENB RELEASE CONFIRM p. 183
9.1.3.14 SENB COUNTER CHECK REQUEST p. 184
9.1.4 Messages for E-UTRAN-NR Dual Connectivity Procedures |R15| p. 184
9.1.4.1 SGNB ADDITION REQUEST p. 184
9.1.4.2 SGNB ADDITION REQUEST ACKNOWLEDGE p. 188
9.1.4.3 SGNB ADDITION REQUEST REJECT p. 191
9.1.4.4 SGNB RECONFIGURATION COMPLETE p. 192
9.1.4.5 SGNB MODIFICATION REQUEST p. 192
9.1.4.6 SGNB MODIFICATION REQUEST ACKNOWLEDGE p. 198
9.1.4.7 SGNB MODIFICATION REQUEST REJECT p. 203
9.1.4.8 SGNB MODIFICATION REQUIRED p. 203
9.1.4.9 SGNB MODIFICATION CONFIRM p. 205
9.1.4.10 SGNB MODIFICATION REFUSE p. 206
9.1.4.11 SGNB RELEASE REQUEST p. 207
9.1.4.12 SGNB RELEASE REQUEST ACKNOWLEDGE p. 208
9.1.4.13 SGNB RELEASE REQUEST REJECT p. 209
9.1.4.14 SGNB RELEASE REQUIRED p. 209
9.1.4.15 SGNB RELEASE CONFIRM p. 210
9.1.4.16 SGNB COUNTER CHECK REQUEST p. 210
9.1.4.17 SGNB CHANGE REQUIRED p. 211
9.1.4.18 SGNB CHANGE CONFIRM p. 212
9.1.4.19 SGNB CHANGE REFUSE p. 214
9.1.4.20 SECONDARY RAT DATA USAGE REPORT p. 214
9.1.4.21 RRC TRANSFER p. 215
9.1.4.22 PARTIAL RESET REQUIRED p. 216
9.1.4.23 PARTIAL RESET CONFIRM p. 217
9.1.4.24 E-UTRA - NR CELL RESOURCE COORDINATION REQUEST p. 217
9.1.4.25 E-UTRA - NR CELL RESOURCE COORDINATION RESPONSE p. 218
9.1.4.26 SGNB ACTIVITY NOTIFICATION p. 219
9.1.4.27 GNB STATUS INDICATION p. 220
9.1.4.28 TRACE START p. 220
9.1.4.29 DEACTIVATE TRACE p. 221
9.1.4.30 UE Radio Capability ID Mapping Request |R16| p. 221
9.1.4.31 UE Radio Capability ID Mapping Response |R16| p. 221
9.1.4.32 CONDITIONAL PSCELL CHANGE CANCEL |R17| p. 221
9.1.5 Messages for IAB Procedures |R16| p. 222
