Method of Wake-up Signal Transmission and Reception

A method of wake-up signal reception for a Wi-Fi device in a wireless communication system, the method comprising:

• determining whether a received signal is a wake-up signal from an access point (AP) in the wireless communication system, to generate a determining result, wherein the wake-up signal is a binary signal for indicating the Wi-Fi device to receive or not to receive a data from the AP;
• and
• switching between an off mode and a sleep mode according to the determining result, wherein at least one parameter for receiving the data is stored in a non-volatile memory when the Wi-Fi device is in the off mode, and the at least one parameter for receiving the data is stored in a volatile memory when the Wi-Fi device is in the sleep mode.

An access point (AP) for wake-up signal transmission in a wireless communication system, the AP comprising:

• a transmitter, for transmitting a beacon for notification of a Wi-Fi device in the wireless communication system and for transmitting a wake-up signal to the Wi-Fi device;
• and
• a signal generator, coupled to the transmitter, for generating the wake-up signal, wherein the wake-up signal is a binary signal for indicating the Wi-Fi device to receive or not to receive a data from the AP.

A Wi-Fi device for wake-up signal reception in a wireless communication system, the Wi-Fi device comprising:

• an energy detecting module, for determining whether a signal received by a detector of the energy detecting module is a wake-up signal from an access point (AP), to generate a determining result, wherein the wake-up signal is a binary signal for indicating the Wi-Fi device to receive or not to receive a data from the AP;
• and
• a power manager, coupled to the energy detecting module, for switching the Wi-Fi device between an off mode and a sleep mode according to the determining result, wherein at least one parameter for receiving the data is stored in a non-volatile memory of the Wi-Fi device when the Wi-Fi device is in the off mode, and the at least one parameter for receiving the data is stored in a volatile memory of the Wi-Fi device when the Wi-Fi device is in the sleep mode.