Question: When a PCRF performs bearer binding and installs a new PCC rule, how does it indicate the IP CAN bearer for the new rule?
Option 1: Using a Bearer-Identifier AVP within the Charging-Rule-Install AVP.
Option 2: Including the IMS_SIGNALLING within the Bearer-Usage AVP.
Option 3: Modifying an existing Charging-Rule-Definition AVP without explicit bearer indication.
Option 4: Sending a separate Bearer-Setup Request to the PCEF.
Explanation: When the PCRF is responsible for bearer binding and needs to install or activate a new PCC rule, it must specify the exact IP CAN bearer where this new rule will be applied. This is achieved by including a Bearer-Identifier AVP within the Charging-Rule-Install AVP, ensuring the PCEF applies the rule to the correct bearer. This process is crucial for accurate policy enforcement and charging in telecom networks.