Section: 10 Multi-Connectivity operation related aspects 10.1 General
Content: Similar procedures as defined under clause 10.1.2.8 (Dual Connectivity operation) in TS 36.300[ Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Overall description; Stage 2 ]  [2] apply for MR-DC. Similar CHO principles as defined in TS 36.300[ Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Overall description; Stage 2 ]  [2] and TS 38.300[ NR; NR and NG-RAN Overall description; Stage-2 ]  [3] apply for the Conditional PSCell Change and Conditional PSCell Addition in MR-DC. Similar LTM principles as defined in TS 38.300[ NR; NR and NG-RAN Overall description; Stage-2 ]  [3] apply for MCG LTM and SCG LTM in NR-DC. MCG LTM with SCG release and MCG LTM without SCG change are supported. LTM for simultaneous PCell and PSCell change is not supported. Conditional PSCell Change and conditional PSCell addition are not supported for the MR-DC options NE-DC and NGEN-DC. Subsequent CPAC is only supported for NR-DC. Configuration of a deactivated SCG in a conditional configuration, configuration of CPC (or subsequent CPAC) while the SCG is deactivated and SCG deactivation while CPC (or subsequent CPAC) is configured are not supported. In MR-DC, CHO is supported in Master Node to eNB/gNB Change procedure and Conditional Handover with Secondary Node procedure.