Section: 8.13.2.6 User consent propagation in MR-DC with 5GC
Content: As specified in TS 32.422[ Telecommunication management; Subscriber and equipment trace; Trace control and configuration management ]  [20] in Management based MDT getting user consent is required before activating the MDT functionality because of privacy and legal obligations. User consent is communicated to the MN at the UE context setup procedure using the INITIAL CONTEXT SETUP REQUEST message, or in HANDOVER REQUEST and PATH SWITCH REQUEST ACKNOWLEDGE messages. Modified user consent information may be received in the UE CONTEXT MODIFICATION REQUEST message. The MN stores the received information in the UE context and uses it to allow subsequent selection of the UE for management based MDT as specified in TS 32.422[ Telecommunication management; Subscriber and equipment trace; Trace control and configuration management ]  [20]. The MN will forward the MDT user consent to the SN at MR-DC setup, i.e., if available in the UE context, the MN will include the Management Based MDT PLMN List IE in the S-NODE ADDITION REQUEST message or in the S-NODE MODIFICATION REQUEST message sent to the SN. Furthermore, in NR-DC and NGEN-DC, the user consent will be forwarded to the relevant SgNB-CU-UP at the bearer context setup or to the SgNB-DU by including the Management Based MDT PLMN List information in the BEARER CONTEXT SETUP REQUEST or UE CONTEXT SETUP REQUEST. Furthermore, in NR-DC and NGEN-DC, the user consent may be updated to the relevant SgNB-CU-UP at the bearer context modification or to the SgNB-DU by including the Management Based MDT PLMN List information in the BEARER CONTEXT MODIFICATION REQUEST or UE CONTEXT MODIFICATION REQUEST. The signalling flow for User consent propagation in NR-DC and NGEN-DC is shown in Figure 8.13.2.6-1. Figure 8.13.2.6-1 User consent propagation in NR-DC and NGEN-DC 0. User Context information are made available at the AMF. 1. The AMF sends INITIAL CONTEXT SETUP REQUEST message to the MN, including the Management based MDT PLMN List IE to communicate user consent to the MN. 2. The MN sends S-NODE ADDITION REQUEST to the SgNB-CU-CP at NR-DC setup. This request includes the Management based MDT PLMN List IE. 3a. The user consent is communicated to the SgNB-DU at the UE context setup by including the Management based MDT PLMN List IE in the UE CONTEXT SETUP REQUEST. 3b. The user consent is communicated to the SgNB-CU-UP at the bearer context setup by including the Management based MDT PLMN List IE in the BEARER CONTEXT SETUP REQUEST.