SYSTEMS AND METHODS FOR WAKING WIRELESS LAN DEVICES

• US 20120131369A1
• Filed: 01/30/2012
• Published: 05/24/2012
• Est. Priority Date: 11/24/2004
• Status: Active Grant

• Current Assignee: Intellectual Ventures I LLC (Intellectual Ventures LLC)
• Original Assignee: Intellectual Ventures I LLC (Intellectual Ventures LLC)
• Inventors: Paljug, Michael
• Granted Patent: US 8,452,998 B2
• Time in Patent Office: Days
• US Class Current: 713/323
• CPC Class Codes: G06F 1/3209 Monitoring remote activity, e.g. over telephone lines or network connections
• CPC Class Codes: G06F 1/325 Power saving in peripheral device
• CPC Class Codes: H04L 12/12 Arrangements for remote connection or disconnection of substations or of equipment thereof

Abstract

A system and method for wireless waking computing devices over a computer network is provided. A signal is broadcast over the network that includes one or more device specific wake-up data sequences. Each device specific wake-up data sequence includes multiple iterations of the hardware address of the wireless network card associated with that device. While in a reduced power or “sleep mode”, the wireless network card monitors wireless channels for packets containing a wake-up data sequence. If a wake-up data sequence is received, the sequence is matched against the hardware address information for that network card. If a match is determined, the network card sends a signal to the computing device causing full system power to be restored. A signal is sent to the network confirming that the device has been successfully woken from the sleep mode.

Claims

1. A method comprising:

initiating the transmission of a wake-up packet on a wireless local area network, wherein the wake-up packet is configured to cause a wireless device to transition from operating in a first power mode to operating in a second power mode;

initiating the transmission of a confirmation message to a requesting application if a confirmation packet has been received from the wireless device in response to the wake-up packet, wherein the confirmation message indicates that the wireless device has transitioned from operating in the first power mode to operating in the second power mode;

periodically reinitiating the transmission of the wake-up packet for a retransmission timeframe if a conformation packet has not been received from the wireless device in response to the wake-up packet; and

initiating the transmission of a failure message to the requesting application if a confirmation packet has not been received from the wireless device in response to the wake-up packet before the retransmission timeframe has elapsed.

2. The method of claim 1, wherein the wireless device has a wireless hardware address, and wherein the wake-up packet comprises multiple consecutive iterations of the hardware address of the wireless device.

3. The method of claim 1, wherein the wake-up packet is a broadcast packet addressed to a plurality of wireless devices on the wireless local area network.

4. The method of claim 3, wherein the wake-up packet is configured to cause each wireless device of the plurality of wireless devices on the wireless local area network currently operating in the first power mode to initiate the transition from the first power mode to the second power mode.

5. The method of claim 1, wherein the power required for operating the wireless device in the first power mode is less than the power required for operating the wireless device in the second power mode.

6. A system comprising:

a controller configured to;

initiate the transmission of a wake-up packet on a wireless local area network, wherein the wake-up packet is configured to cause a wireless device to transition from operating in a first power mode to operating in a second power mode,

if a confirmation packet has not been received from the wireless device in response to the wake-up packet, initiate the transmission of a confirmation message to a requesting application;

if a conformation packet has not been received from the wireless device in response to the wake-up packet, periodically reinitiate the transmission of the wake-up packet for a retransmission timeframe ; and

if a confirmation packet has not been received from the wireless device in response to the wake-up packet before the retransmission timeframe has elapsed, initiate the transmission of a failure message to the requesting application.

7. The system of claim 6, wherein the wireless device has a wireless hardware address, and wherein the wake-up packet comprises multiple consecutive iterations of the hardware address of the wireless device.

8. The system of claim 6, wherein the wake-up packet is a broadcast packet addressed to a plurality of wireless devices on the wireless local area network, and

9. The system of claim 8, wherein the wake-up packet is configured to cause each wireless device of the plurality of wireless devices on the wireless local area network currently operating in the first power mode to initiate the transition from the first power mode to the second power mode.

10. The system of claim 6, wherein the power required for operating the wireless device in the first power mode is less than the power required for operating the wireless device in the second power mode.

11. An apparatus comprising:

means for initiating the transmission of a wake-up packet on a wireless local area network, wherein the wake-up packet is configured to cause a wireless device to transition from operating in a first power mode to operating in a second power mode;

means for initiating the transmission of a confirmation message to a requesting application if a confirmation packet has been received from the wireless device in response to the wake-up packet, wherein the confirmation message indicates that the wireless device has transitioned from operating in the first power mode to operating in the second power mode;

means for periodically reinitiating the transmission of the wake-up packet for a retransmission timeframe if a conformation packet has not been received from the wireless device in response to the wake-up packet; and

means for initiating the transmission of a failure message to the requesting application if a confirmation packet has not been received from the wireless device in response to the wake-up packet before the retransmission timeframe has elapsed.

12. The apparatus of claim 11, wherein the wireless device has a wireless hardware address, and wherein the wake-up packet comprises multiple consecutive iterations of the hardware address of the wireless device.

13. The apparatus of claim 11, wherein the wake-up packet is a broadcast packet addressed to a plurality of wireless devices on the wireless local area network.

14. The apparatus of claim 13, wherein the wake-up packet is configured to cause each wireless device of the plurality of wireless devices on the wireless local area network currently operating in the first power mode to initiate the transition from the first power mode to the second power mode.

15. The apparatus of claim 11, wherein the power required for operating the wireless device in the first power mode is less than the power required for operating the wireless device in the second power mode.

16. A tangible computer-readable medium having instructions stored thereon, the instructions comprising:

instructions for initiating the transmission of a wake-up packet on a wireless local area network, wherein the wake-up packet is configured to cause a wireless device to transition from operating in a first power mode to operating in a second power mode;

instructions for initiating the transmission of a confirmation message to a requesting application if a confirmation packet has been received from the wireless device in response to the wake-up packet, wherein the confirmation message indicates that the wireless device has transitioned from operating in the first power mode to operating in the second power mode;

instructions for periodically reinitiating the transmission of the wake-up packet for a retransmission timeframe if a conformation packet has not been received from the wireless device in response to the wake-up packet; and

instructions for initiating the transmission of a failure message to the requesting application if a confirmation packet has not been received from the wireless device in response to the wake-up packet before the retransmission timeframe has elapsed.

17. The tangible computer-readable medium of claim 16, wherein the wireless device has a wireless hardware address, and wherein the wake-up packet comprises multiple consecutive iterations of the hardware address of the wireless device.

18. The tangible computer-readable medium of claim 16, wherein the wakeup packet is a broadcast packet addressed to a plurality of wireless devices on the wireless local area network.

19. The tangible computer-readable medium of claim 18, wherein the wake-up packet is configured to cause each wireless device of the plurality of wireless devices on the wireless local area network currently operating in the first power mode to initiate the transition from the first power mode to the second power mode.

20. The tangible computer-readable medium of claim 16, wherein the power required for operating the wireless device in the first power mode is less than the power required for operating the wireless device in the second power mode.