Monitoring and reporting service performance in roaming scenario

A method comprising:

• receiving, by a home policy control function (HPCF) from an application function, a first message requesting to subscribe to a quality of service (QoS) event for a data flow of a wireless device, wherein the QoS event occurs when a QoS value for the data flow meets a threshold criterium, the first message comprising:
• a first information element indicating a first QoS event;
• and
• a second information element indicating a first QoS value for the first QoS event;
• determining, by the HPCF, a QoS reporting policy for the data flow based on the first QoS event and the first QoS value, wherein the QoS reporting policy comprises a second QoS event and a second QoS value;
• sending, by the HPCF to a visited policy control function (VPCF), a second message comprising the QoS reporting policy;
• receiving, by the HPCF from the VPCF, a measurement result comprising:
• a third information element indicating an occurrence of the second QoS event;
• and
• a fourth information element indicating a measured QoS value;
• and
• sending, by the HPCF to the application function, the measurement result.