Question: In a scenario where a Gn/Gp SGSN (Serving GPRS Support Node) supports Release 7 or later, what additional step must it take regarding QoS (Quality of Service) profile selection when interacting with an Iu-mode RAN (Radio Access Network) of a specific Release?
Option 1: Automatically assign default QoS values without considering the Iu-mode RAN's Release.
Option 2: Select QoS profile values based solely on the UE's (User Equipment) capabilities.
Option 3: Choose specific QoS profile values to ensure compliance with the Release supported by the Iu-mode RAN, as per TS 23.107 guidelines for that Release.
Option 4: Bypass QoS profile negotiation and directly proceed with RAB (Radio Access Bearer) assignment procedures.
Explanation: To ensure seamless and compliant interaction between the Gn/Gp SGSN (supporting R7 or later) and an Iu-mode RAN of a specific Release, the SGSN must adapt its QoS profile selection. This adaptation is crucial for maintaining compatibility and effective service delivery. By choosing QoS profile values that align with the Iu-mode RAN's supported Release (as outlined in TS 23.107 for that specific Release), the network guarantees optimal performance and avoids potential incompatibilities, highlighting the importance of tailored QoS management in heterogeneous telecom environments.