Question: In a UTRAN Iur interface scenario using FDD, what action does the DRNS (Dual-Radio Network Subsystem) take when the Transmission Gap Pattern Sequence is activated for the HS-DSCH Primary Serving Cell but not all other serving cells listed in the Affected HS-DSCH Serving Cell List IE?
Option 1: Modify the Active Pattern Sequence Information IE to match the activation status across all serving cells.
Option 2: Send a warning notification to the RNC (Radio Network Controller) for potential configuration mismatch.
Option 3: Initiate the Radio Link Failure procedure with the cause value “Invalid CM Settings”.
Option 4: Temporarily suspend HS-DSCH services on the Primary Serving Cell until synchronization is achieved.
Explanation: This action handles an abnormal condition where there's inconsistency in Transmission Gap Pattern Sequence activation across serving cells. Initiating Radio Link Failure with a clear cause value (“Invalid CM Settings”) helps quickly identify and address the configuration issue, ensuring network reliability and performance.