Patent ID: 7613455

Claim:
A rescan method of a mobile terminal comprising: deciding to perform rescans of systems provided on a scan list of the mobile terminal or to return to an original system and monitor a specific slot, the deciding being based on a calculated time to monitor the specific slot and a calculated time to rescan the systems provided on the scan list, wherein the time to monitor the specific slot is calculated based on a time difference between a current slot and another slot to be monitored by the mobile terminal, and wherein the time to rescan the systems is calculated based on a time for the mobile terminal to tune to another channel on the scan list and a time taken for the mobile terminal to scan a channel on the scan list, wherein when the calculated time to monitor the specific slot of the mobile terminal is longer than the calculated time to rescan the systems on the scan list of the mobile terminal, the mobile terminal decides to rescan the systems on the scan list, and wherein when the calculated time to monitor the specific slot of the mobile terminal is shorter than the calculated time to rescan the systems on the scan list of the mobile terminal, the mobile terminal decides to return to the original system and monitor the specific slot.