21.2.2 QoE Measurement Collection Deactivation

The QoE Measurement Collection deactivation permanently stops all or some of the QoE measurement collection configurations at a UE, resulting in the release of the corresponding QoE measurement configuration(s) in the UE. QoE Measurement Collection deactivation is initiated by the OAM towards the gNB (via the core network in case of a signalling-based QoE measurement configuration). For a signalling-based QoE measurement configuration, the deactivation of QoE measurement collection is supported by using UE-associated NGAP signalling. A list of QoE references is used to deactivate the corresponding QoE measurement collection(s).

Upon reception of the QoE release message for an application layer measurement configuration, the UE deletes the application layer measurement configuration at the application layer and the associated parameters in the UE Access Stratum and discards any unsent application layer measurement reports corresponding to the released application layer configuration. The UE discards the reports received from the application layer when it has no associated application layer measurement configuration configured.

The network can replace a QoE measurement configuration with another one by releasing an existing QoE measurement configuration and configuring another QoE measurement configuration. The network is not expected to release a signalling-based QoE measurement configuration for the sake of configuring a new management-based QoE measurement configuration.