Question: For a UE supporting half duplex operation on one or more supported frequency bands, what is the minimum downlink subframe requirement per radio frame for RSRP measurement of an identified inter-frequency cell when no DRX is used?
Option 1: At least two downlink subframes (#0 and #5) per radio frame
Option 2: At least one downlink subframe per radio frame
Option 3: Three consecutive downlink subframes per two radio frames
Option 4: No specific requirement, as long as Tmeasure_inter_UE cat M1_NC is met
Explanation: According to the requirements for E-UTRAN inter-frequency measurements without DRX, for a UE to perform RSRP measurements on an identified cell, at least one downlink subframe per radio frame of the measured (identified) cell must be available. This ensures the UE can gather necessary signal strength information for effective radio resource management.