Method of saving power of station in wireless network
A method of saving power of a station in wireless network is provided. The station comprises a connectivity module, a central processing unit, and peripheral devices. The method includes: upon receiving a wake-up signal, powering on the connectivity module, the central processing unit, and the peripheral devices; performing the central processing unit and the peripheral devices in a connection state; performing the connectivity module in an authenticated state; and upon a condition that there is no data to be transferred to the station or after the station transmits and receives all needed data, performing a sleep mode to power off the connectivity module, the central processing unit, and the peripheral devices.
1. A method of saving power of a station in wireless network, the method comprising:
upon receiving a first wake-up signal, performing data transmission;
upon a condition that there is no data to be transferred to the station, performing a sleep mode; and
upon receiving a second wake-up signal, performing data transmission;
wherein an interval between the first and second wake-up signals is longer than an interval between two delivery traffic indication messages (DTIMs).
2. The method of claim 1 , wherein the delivery traffic indication messages are received from an access point.
3. The method of claim 1 , wherein the station comprises a general purpose input/output (GPIO) device, and the wake-up signal is sent from the GPIO device in response to an external event.
4. The method of claim 1 , wherein the station comprises a connectivity module, and the method further comprises:
upon a condition that there is data to be transferred by a delivery traffic indication message (DTIM) from an access point, performing the connectivity module in an authenticated state.
5. The method of claim 1 wherein the station comprises a timer, and the first and second wake-up signals are generated by the timer.
6. The method of claim 1 , wherein the station comprises a connectivity module and a retention memory, the retention memory is used for storing information relating to authenticated states of the connectivity module in a previous operation occurred before the last sleep mode, and the method further comprises:
performing the connectivity module in the authenticated state complying with the previous operation.
7. The method of claim 1 , wherein the station comprises a connectivity module and the connectivity module comprises a modulator/demodulator, a radio frequency (RF) transceiver, an analog-to-digital converter, a digital-to-analog converter, and a media access controller.
8. The method of claim 1 , wherein the station comprises a connectivity module and the station connects to another station by using WiFi, Bluetooth, Zigbee, and ZWAVE wireless technology protocol through the connectivity module.
9. The method of claim 1 , wherein the station comprises a connectivity module, a central processing unit (CPU), and peripheral devices, and the method further comprises:
upon receiving the first or second wake-up signal, powering on the connectivity module, the central processing unit, and the peripheral devices.
10. The method of claim 1 , wherein the station comprises a connectivity module, a central processing unit (CPU), and peripheral devices, and the method further comprises:
upon performing the sleep mode, powering off the connectivity module, the central processing unit, and the peripheral devices.