Question: In UTRAN Iu interface RANAP signalling, what is a characteristic of the UE Aggregate Maximum Bit Rate Information Element (IE) provided by the Core Network (CN) to the Radio Network Controller (RNC)?
Option 1: It applies exclusively to GBR (Guaranteed Bit Rate) bearers for both Downlink and Uplink.
Option 2: It is direction-agnostic, applying equally without distinction between Downlink and Uplink for all bearer types.
Option 3: It is applicable for all non-GBR (Non-Guaranteed Bit Rate) bearers per UE, defined separately for Downlink and Uplink directions.
Option 4: It must only include the UE Aggregate Maximum Bit Rate Downlink IE, with the Uplink component being optional.
Explanation: This is correct because the UE Aggregate Maximum Bit Rate IE specifically targets non-GBR bearers (excluding those with guaranteed bit rates), and it distinguishes between Downlink and Uplink directions, requiring at least one of these directional IEs to be included. This setup allows for more tailored network resource management based on the type of bearer and the direction of data flow.