Section: 8.13.2.7 Management based trace activation in MR-DC with 5GC
Content: In the MR-DC with 5GC case, the EM provides the MDT configuration to both MN and SN independently. In Management Based Trace Activation towards a SN, the SN may send the CELL TRAFFIC TRACE message including the Trace ID and privacy indicator to the MN as described in TS 32.422[ Telecommunication management; Subscriber and equipment trace; Trace control and configuration management ]  [20]. Upon reception of the CELL TRAFFIC TRACE message from the SN, the MN will send a CELL TRAFFIC TRACE message including the Trace ID and privacy indicator to the CN for this UE. The CN forwards the Trace ID and other information to the TCE as specified in TS 32.422[ Telecommunication management; Subscriber and equipment trace; Trace control and configuration management ]  [20]. The following shows a flow chart summarizing the functionality in MR-DC when the SN is the SgNB. Figure 8.13.2.7-1 Data anonymization in MR-DC when the SN is the SgNB 0. The gNB-CU-CP, the gNB-CU-UP, the gNB-DU receives the MDT configuration from EM and select the suitable UEs for MDT data collection. The anonymization MDT configuration parameter from the EM is considered to be IMEI-TAC. 1. For the management based MDT activation in gNB-CU-UP and/or in gNB-DU, if the gNB-CU-UP and/or the gNB-DU receive an MDT Configuration including the anonymization parameter set to IMEI-TAC, the gNB-CU-UP and/or gNB-DU send CELL TRAFFIC TRACE message to the gNB-CU-CP for this UE, including Trace ID and privacy indicator. 2. For the management based MDT activation in gNB-CU-CP, upon receiving the CELL TRAFFIC TRACE message from E1/F1, the gNB-CU-CP shall send a CELL TRAFFIC TRACE message to the MN for this UE, including Trace ID and privacy indicator. 3. The MN sends a CELL TRAFFIC TRACE message to the CN for this UE, including Trace ID and privacy indicator. The CN forwards Trace ID and other information to the TCE as specified in TS 32.422[ Telecommunication management; Subscriber and equipment trace; Trace control and configuration management ]  [20].