Section: 21.1 Overview
Content: The QoE Measurement Collection function enables collection of application layer measurements from the UE. The supported service types are: - QoE Measurement Collection for DASH streaming services; - QoE Measurement Collection for MTSI services; - QoE Measurement Collection for VR services. For DASH, MTSI, VR, the QoE measurement collection is supported in RRC_CONNECTED state only, unless the application data is delivered via MBS broadcast communication service. The QoE Measurement Collection function supports collection of QoE measurements for MBS communication service. The measurement collection is supported for the following two communication service types: - MBS broadcast; - MBS multicast. QoE measurement collection for application sessions delivered via MBS broadcast is supported in RRC_CONNECTED, RRC_INACTIVE, and RRC_IDLE states. QoE measurement collection for the application sessions delivered via MBS multicast is supported in RRC_CONNECTED state only. Both signalling based and management based QoE measurement collection are supported in NR SA and NR-DC. Further details of NR-DC operation can be found in TS 37.340[ Evolved Universal Terrestrial Radio Access (E-UTRA) and NR; Multi-connectivity; Overall Description; Stage-2 ]  [21] and clause 21.7. NOTE: The naming QoE Measurement is used in NG, Xn, and interfaces between the OAM and the gNB. In the Uu interface, the naming application layer measurement is used and it is equal to QoE Measurement.