SYSTEMS AND METHODS FOR LOW POWER WAKE-UP SIGNAL IMPLEMENTATION AND OPERATIONS FOR WLAN

• US 20150036576A1
• Filed: 09/15/2014
• Published: 02/05/2015
• Est. Priority Date: 11/02/2012
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Jafarian, Amin, Merlin, Simone
• Granted Patent: US 9,743,351 B2
• Time in Patent Office: Days
• US Class Current: 370/311
• CPC Class Codes: H04W 52/0212 managed by the network, e.g. network or access point is master and terminal is slave
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

Systems, methods, and devices for wireless communication are disclosed. In one implementation an apparatus for wireless communications is provided. The apparatus includes a receiver configured to receive a wake-up message that is a portion of a wake-up sequence. In certain implementations, the apparatus further includes a processing system operably coupled to the receiver and configured to wake the receiver for a period of time. The period of time can exceed at least a transmission period of the wake-up sequence plus a transmission period of the wake-up message. The apparatus can further include a transmitter configured to transmit a message acknowledging receipt of the wake-up message.

Claims

1. An apparatus for wireless communications, comprising:

a processing system configured to generate a plurality of wake-up sequences, each wake-up sequence comprising at least one wake-up message; and

a transmitter configured to transmit the plurality of wake-up sequences to wake-up at least one station.

2. The apparatus of claim 1, wherein the transmitter is further configured to transmit the wake-up message using at least one of an on-off keying modulation or a frequency-shift keying modulation.

3. The apparatus of claim 1, wherein the wake-up message is a paging message configured in a null data packet (NDP) format.

4. The apparatus of claim 1, wherein the wake-up message comprises a station identifier, the station identifier identifying the at least one station.

5. The apparatus of claim 4, wherein the station identifier comprises a plurality of bits, one of the plurality of bits identifying the at least one station.

6. The apparatus of claim 1, wherein the transmitter is further configured to transmit the at least one wake-up message during a transmission period of one of the plurality of wake-up sequences.

7. The apparatus of claim 6, wherein the at least one wake-up message comprises a sequence number, and wherein the sequence number indicates a number of the plurality of wake-up sequences to be sent after the transmission of the at least one wake-up message.

8. The apparatus of claim 7, wherein the sequence number is a reverse-ordered sequence number, the reverse-order sequence number identifying a number of the plurality of wake-up sequences to be sent after the transmission of the at least one wake-up message.

9. The apparatus of claim 1, wherein the at least one wake-up message comprises a device class identifier, and wherein the transmitter is further configured to transmit the at least one wake-up message to the at least one station identified by the device class identifier.

10. The apparatus of claim 1, wherein the at least one wake-up message comprises a message type identifier, and wherein the transmitter is further configured to transmit the at least one wake-up message to the at least one station identified by the message type identifier.

11. The apparatus of claim 1, wherein at least one of the plurality of wake-up sequences comprises at least one confirmation message that includes a confirmation identifier, and wherein the confirmation identifier identifies the at least one of the plurality of wake-up sequences.

12. The apparatus of claim 11, wherein the confirmation message is a page message that includes a page identifier, and wherein the confirmation identifier is the page identifier.

13. The apparatus of claim 1 further comprising a receiver configured to receive a message acknowledging an end of a transmission of the plurality of wake-up sequences.

14. The apparatus of claim 1 further comprising a receiver configured to receive a power-save poll message, the power-save poll message associated with the at least one wake-up message from the plurality of wake-up sequences.

15. The apparatus of claim 1, wherein the transmitter is further configured to transmit the plurality of wake-up sequences to activate more than one receiver.

16. A method for wirelessly activating a wireless station, the method comprising:

generating a plurality of wake-up sequences; and

transmitting the plurality of wake-up sequences, each of the plurality of wake-up sequences including at least one wake-up message.

17. The method of claim 16, wherein the at least one wake-up message is transmitted using at least one of an on-off keying modulation or a frequency-shift keying modulation.

18. The method of claim 16, wherein the at least one wake-up message is a paging message configured in a null data packet (NDP) format.

19. The method of claim 16, wherein the at least one wake-up message comprises a station identifier, the method further comprising transmitting the at least one wake-up message to at least one station identified by the station identifier.

20. A wireless node for wireless communications, the apparatus comprising:

at least one antenna;

a processing system configured to generate a plurality of wake-up sequences, each wake-up sequence comprising at least one wake-up message; and

a transmitter configured to transmit, via the at least one antenna, the plurality of wake-up sequences to wake-up at least one station.