WAN module based remote wakeup system and terminal thereof

A Wireless Access Network (WAN) module based remote wakeup system comprising:

• a terminal having an embedded controller, a power supply module and a bus connection module;
• and a WAN module having a serial port unit;
• wherein a serial port bus is led from the serial port unit by the WAN module to the bus connection module in the terminal, and the terminal further includes a security control module connected to the embedded controller, the power supply module and a serial port bus led from the WAN module side by the bus connection module, respectively, and the power supply module is connected to the bus connection module;
• and
• wherein the power supply module is adapted to supply power to the security control module and the bus connection module;
• the security control module comprises a micro program controller which connects with the power supply module and the embedded controller;
• wherein the power supply module comprises a power supply adapter/battery unit, a voltage transformer connected to the power supply adapter/battery unit, the embedded controller, the micro program controller and the bus connection module, respectively, and a bus voltage transformer connected to the power supply adapter/battery unit, the embedded controller, the micro program controller and the bus connection module, respectively;
• the embedded controller is adapted to generate an enable signal for the voltage transformer to supply power to the security control module and the bus connection module when the terminal is in power-off or sleep status, and generate the enable signal for the bus voltage transformer to supply power to the security control module and the bus connection module when the terminal is in power-on status;
• the voltage transformer is adapted to reduce a voltage from the power supply adapter/battery unit according to the enable signal from the embedded controller so as to supply power to the security control module and the bus connection module;
• the bus voltage transformer is adapted reduce the voltage from the power supply adapter/battery unit according to the enable signal from the embedded controller so as to supply power to the security control module and the bus connection module;
• the security control module is adapted to perform security verification on information carried by a signal received on the serial port bus led from the bus connection module, generate a wakeup signal and send it to the embedded controller if the security verification is successful;
• and
• the embedded controller is adapted to start the terminal according to the received wakeup signal,
• wherein the micro program controller is further adapted for storing security verification information;
• wherein the micro program controller is further adapted, in the power-off or sleep status of the terminal, to detect whether the WAN module is inserted in the bus connection module, perform identity verification on the inserted WAN module, and send the enable signal to the voltage transformer to stop the voltage transformer from supplying power to the security control module and the bus connection module if the identity verification on the WAN module fails.