Question: In a 3GPP-GPRS network, when a PDP Context is terminated (initiated by either the UE or the network), what information must the PCEF supply to the PCRF during bearer binding in an UPDATE_REQUEST?
Option 1: Bearer-Identifier and Bearer-Operation AVPs indicating 'Termination' of a specific bearer
Option 2: Only Bearer-Identifier AVP with no operation specified
Option 3: CC-Request-Type AVP set to 'INITIAL_REQUEST' with no bearer details
Option 4: No additional information is required beyond the standard CC-Request
Explanation: When a PDP Context is terminated, to inform the PCRF about the implications of this bearer termination, the PCEF must provide detailed information. This includes both the identifier of the bearer being terminated (Bearer-Identifier AVP) and the operation being performed on it (Bearer-Operation AVP set to 'Termination'), all within an UPDATE_REQUEST. This ensures the PCRF can make informed decisions about adjusting PCC rules for the affected bearers, potentially moving rules to remaining IP CAN bearers.