DETECTION METHOD, COMMUNICATION APPARATUS, AND COMMUNICATION SYSTEM

A detection method, a communication apparatus, and a communication system are provided. The method includes: when a first detection result of a detected QoS flow meets a first trigger condition, detecting the QoS flow based on a first detection execution action corresponding to the first trigger condition, where the first detection execution action includes a detection frequency; and reporting a second detection result detected based on the first detection execution action. In this solution, the first trigger condition is searched for based on the first detection result, next detection of the QoS flow is performed based on the first detection execution action corresponding to the found trigger condition, and the second detection result is reported. Because a detection execution action is determined based on a previous detection result, a detection execution action corresponding to the QoS flow can be accurately determined.