Question: When priority information for UTRA carrier frequencies is provided and SrxlevServingCell > Sprioritysearch, how often must a UE search for higher priority UTRA FDD cells?
Option 1: Every TmeasureFDD seconds
Option 2: At least every Thigher_priority_search interval
Option 3: Only once after initial network entry
Option 4: Continuously, without a specified interval
Explanation: According to the specifications for radio resource management in TDD systems, when the serving cell's received signal level (SrxlevServingCell) exceeds the priority search threshold (Sprioritysearch), and priority information is available, the User Equipment (UE) is mandated to initiate a search for any higher priority UTRA FDD cells at a minimum frequency defined by Thigher_priority_search. This ensures the UE can potentially reselect to a higher priority cell if available, thus optimizing network resource utilization and user experience.