Question: During Initial BSIC (Base Station Identity Code) identification, what happens to a GSM cell for which the UE (User Equipment) has successfully decoded the BSIC, and how does the UE proceed with other cells?
Option 1: The GSM cell is removed from the measurement set, and the UE skips to the weakest BCCH carrier with unknown BSIC for its next decoding attempt.
Option 2: The UE continues to attempt decoding the same GSM BCCH carrier to confirm the BSIC, while also starting BSIC identification of the next strongest BCCH carrier with unknown BSIC.
Option 3: The GSM cell is moved to a separate monitoring list, and the UE only proceeds with the next GSM BCCH carrier in signal strength order after all cells have had their first decoding attempt.
Option 4: The GSM cell for which the BSIC has been successfully identified is moved to the BSIC re-confirmation procedure, and the UE immediately continues BSIC identification with the next GSM BCCH carrier in signal strength order with unknown BSIC.
Explanation: This option correctly reflects the process outlined for successful BSIC decoding. Upon successful identification, a cell is moved to a re-confirmation procedure to ensure ongoing validity of the BSIC, while the UE efficiently moves on to the next unidentified cell in order of signal strength, optimizing the use of measurement opportunities.