A system, devices and procedures for providing QoS monitoring in a 5G network are described. The QoS monitoring is per QoS flow per UE or GTP-U path QoS monitoring. A SMF sends a request to a UPF and NG-RAN to report UL/DL packet delay and RTT between the UPF and a UE or an N3 and N9 interface, along with thresholds for reporting the measurements. The UPF sends a report containing the measurements when the threshold is met. The delays include average, minimum and maximum packet delays. The request also indicates a state of QoS monitoring, S-NSSAI and 5QI to monitor, whether event-based/periodic/session release-based QoS monitoring reporting per QoS flow per UE is supported, minimum waiting time between consecutive reports for event-triggered QoS monitoring reporting, and a period to report the measured packet delay.