| 摘要 |
A method of calibrating a sleep clock of a mobile radio communications device includes the steps of determining drift between the air interface timebase and the local timebase as controlled during sleep periods by the sleep clock, and adding the determined value of drift to a preceding calibration value to arrive at a calibration value for calibrating the sleep clock. The method allows the mobile device to remain in sleep mode for longer periods of time thus conserving more battery power, and the fast clock is not required for calibration. |
