Question: During a PCRF-initiated IP-CAN Session Modification for a subscriber, which of the following parameters may NOT be included in the Policy and Charging Rule Provision sent to the PDN GW, assuming no additional context?
Option 1: Authorized APN-AMBR (Aggregate Maximum Bit Rate)
Option 2: UE: User Equipment's Current Cell ID
Option 3: User Location Information (if received from the BBERF: Broadband BRAS/BNG Equipment Identity Register Function)
Option 4: User GSG (GPRS Subscription Group) information (if received from the BBERF)
Explanation: The correct answer is Option 2 because 'UE's Current Cell ID' is not specified among parameters provided by the PCRF in Policy and Charging Rule Provision to the PDN GW during an IP-CAN Session Modification. In contrast, Authorized APN-AMBR, User Location Information, and user GSG information are explicitly listed as includable parameters under certain conditions.