Mediatek Corporation

Sheng-Der Chin

Yu-Cheng Hsieh

A method for controlling a mobile communication device to enter a power-saving mode and to recover timing after the mobile communication device leaves the power-saving mode. The mobile communication device communicates with a base station through a time division multiple access (TDMA) system so that wireless signals are transmitted via frames. The method includes executing a sleep mode managing/timing recovering program for interrupting other control procedures, utilizing the sleep mode managing/timing recovering program to calculate a predetermined sleep period, controlling the mobile communication device to enter the sleep mode, executing the sleep mode managing/timing recovering program for stopping a clock signal from driving a micro-controller unit during an actual sleep period, controlling the mobile communication device to terminate the sleep mode, and executing the sleep mode managing/timing recovering program for synchronizing timing of the mobile communication device with timing of the base station according to the actual sleep period.

Method for controlling a mobile communication device to enter a power-saving mode and to recover timing after the mobile communication device leaves the power-saving mode

Method for recovering frame timing of a mobile communication device performing a sleep mode. The mobile communication device communicates with a base station through a communication system so that wireless signals are transmitted via frames. The method includes executing a synchronous task for interrupting currently loaded control processes in a real-time operating system and for calculating a predetermined sleep period for the sleep mode, executing the synchronous task for driving the mobile communication device to enter the sleep mode during an actual sleep period, and executing the synchronous task for synchronizing frame timing of the mobile communication with frame timing of the base station according to the actual sleep period.

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Chia-I, Taiwan

Sheng-Der Chin