Question: How can a Control Plane (CP) function instruct a User Plane Function (UPF) to cease detection and reporting of specific events previously defined in a Session Reporting Rule (SRR)?
Option 1: By sending a new SRR with an updated list of events that excludes the ones to be stopped, via the PFCP Session Establishment Request message.
Option 2: By modifying the existing SRR using the PFCP Session Modification Request message but without specifying any changes.
Option 3: By issuing a direct command to stop all session reporting temporarily until further notice, outside of the SRR framework.
Option 4: By updating the SRR with control information for the events to stop, specifically setting the length of the control information IE for those events to null.
Explanation: Updating an SRR by setting the length of the control information IE for specific events to null is a method for instructing the UPF to stop detecting and reporting those events, allowing selective cessation of event reporting without removing the entire SRR.