Content for TR 23.757 Word version: 17.0.0
6.20 Solution #20: Local multicast service
6.21 Solution #21: Global Multicast Group ID for local Multicast Contents
6.22 Solution #22: RAN based switching within NR coverage
6.23 Solution #23: Reliable delivery mode switching between unicast and multicast based on threshold triggers
6.24 Solution #24: Reliable delivery method switch between unicast and multicast
6.25 Solution #25: mode switching between unicast and multicast
6.26 Solution #26: Reliable MBS session handover with Mapped QoS Flow
6.27 Solution #27: Inter-RAN node MBS session Handover
6.28 Solution #28: Mode switch between multicast and unicast
6.29 Solution #29: Delivery method change due to UE mobility
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6.20 Solution #20: Local multicast service p. 131
6.20.1 Functional description p. 131
6.20.2 Procedures p. 132
6.20.3 Impacts on services, entities and interfaces p. 134
6.21 Solution #21: Global Multicast Group ID for local Multicast Contents p. 135
6.21.1 Functional Description p. 135
6.21.1.1 System Architecture p. 135
6.21.1.2 Assumptions and principles for local MBS services p. 135
6.21.1.3 Specific additions to solution 3 for local MBMS services p. 135
6.21.2 Procedures p. 136
6.21.2.1 Multicast context and Multicast flow setup/modification via PDU Session Modification procedure p. 136
6.21.2.2 Optional Multicast group registration p. 139
6.21.2.3 Enhancement on Handover procedure p. 140
6.21.3 Impacts on services, entities and interfaces p. 141
6.22 Solution #22: RAN based switching within NR coverage p. 142
6.22.1 Functional Description p. 142
6.22.2 Procedures p. 143
6.22.3 Impacts on services, entities and interfaces p. 143
6.23 Solution #23: Reliable delivery mode switching between unicast and multicast based on threshold triggers p. 143
6.23.1 Functional Description p. 143
6.23.2 Procedures p. 145
6.23.3 Impacts on existing entities and interfaces p. 147
6.24 Solution #24: Reliable delivery method switch between unicast and multicast p. 147
6.24.1 Functional description p. 147
6.24.2 Procedures p. 148
6.24.2.1 Unicast to multicast switch procedure p. 149
6.24.2.2 Multicast to unicast switch procedure p. 152
6.24.3 Impacts on services, entities and interfaces p. 156
6.25 Solution #25: mode switching between unicast and multicast p. 156
6.25.1 Functional description p. 156
6.25.2 Procedures p. 157
6.25.3 Impacts on services, entities and interfaces p. 157
6.26 Solution #26: Reliable MBS session handover with Mapped QoS Flow p. 158
6.26.1 Functional description p. 158
6.26.2 Procedures p. 159
6.26.3 Impacts on services, entities and interfaces p. 161
6.27 Solution #27: Inter-RAN node MBS session Handover p. 162
6.27.1 Functional description p. 162
6.27.2 Procedures p. 163
6.27.2.1 Xn based handover p. 163
6.27.2.2 N2 based handover p. 166
6.27.2.3 Lossless packet transferring p. 169
6.27.2.4 Idle mode mobility between non-supporting NG RAN and supporting NG-RAN node p. 170
6.27.2.5 Preparation for unicast fallback if PDU session does not yet include required QoS flows to transport multicast data p. 170
6.27.3 Impacts on services, entities and interfaces p. 171
6.28 Solution #28: Mode switch between multicast and unicast p. 172
6.28.1 Functional description p. 172
6.28.1.1 General p. 172
6.28.1.2 Potential triggers for mode switch p. 172
6.28.2 Procedures p. 173
6.28.2.1 Multicast to unicast mode switch triggered by SMF p. 173
6.28.2.2 Multicast to unicast mode switch triggered by RAN p. 173
6.28.2.3 Individual to shared delivery method change triggered by UE p. 174
6.28.2.4 Individual to shared delivery method change triggered by SMF p. 175
6.28.2.5 Individual to shared delivery method change triggered by RAN p. 176
6.28.2.6 Shared to individual delivery method change triggered by UE p. 176
6.28.2.7 Shared to individual delivery method change triggered by SMF p. 177
6.28.2.8 Shared to individual delivery method change triggered by RAN p. 178
6.28.3 Impacts on services, entities and interfaces p. 179
6.29 Solution #29: Delivery method change due to UE mobility p. 179
6.29.1 Functional description p. 179
6.29.2 Procedures p. 179
6.29.2.1 Xn based shared to individual switch p. 179
6.29.2.2 N2 based shared to individual switch p. 181
6.29.2.3 Xn based individual to shared switch p. 182
6.29.2.4 N2 based individual to shared switch p. 183
6.29.3 Impacts on services, entities and interfaces p. 185
