Question: When a Home NodeB Gateway (HNB GW) initiates an S15 session modification with the Policy and Charging Rules Function (PCRF) to allocate new resources for a Circuit Switched (CS) service, what information does the HNB GW include in the CCR command alongside the QoS-Information Attribute Value Pair (AVP)?
Option 1: Only the CS-Service-QoS-Request-Identifier AVP
Option 2: Only the CC-Request-Type AVP set to "UPDATE_REQUEST"
Option 3: Both the CS-Service-QoS-Request-Identifier AVP and the QoS-Information AVP derived from the RAB message
Option 4: The CS-Service-QoS-Request-Operation AVP set to "INITIATION"
Explanation: When allocating new resources for a CS service, the HNB GW must inform the PCRF about the requested Quality of Service (QoS) and identify the specific QoS request. This is achieved by including both the QoS-Information AVP (derived from the RAB message, specifying the desired QoS) and the CS-Service-QoS-Request-Identifier AVP (providing a unique identifier for the QoS request) in the CCR command. The CC-Request-Type AVP being set to "UPDATE_REQUEST" is a general requirement for session modifications but doesn't specifically address the new resource allocation's QoS aspects. The CS-Service-QoS-Request-Operation AVP set to "INITIATION" is not mentioned in the context of allocating new resources; "MODIFICATION" and "DELETION" operations are detailed, implying "INITIATION" is not a valid option in this scenario.