Low-power wake-up receiver negotiation procedure

Patent metadata

Field	Value
Publication number	US-9924462-B2
Application number	US-201615376360-A
Country	US
Kind code	B2
Filing date	Dec 12, 2016
Priority date	Jul 13, 2016
Publication date	Mar 20, 2018
Grant date	Mar 20, 2018

Abstract

Embodiments of a LP-WUR (low-power wake-up radio) negotiation procedure are generally described herein. A first wireless device encodes a request frame for transmission to a second wireless device, requesting to enable a LP-WUR mode and negotiate parameters for LP-WUR transmission between the first wireless device and the second wireless device. The first wireless device decodes a response action frame responsive to the request frame, indicating acceptance or rejection of the request. If the response action frame indicates acceptance of the request, the first wireless device: encodes an acknowledgement frame for transmission to the second wireless device, the acknowledgement frame to configure the second wireless device to enable the LP-WUR mode.

First claim

What is claimed is:

1. An apparatus of a first wireless device, the apparatus comprising:
memory; and processing circuitry, the processing circuitry to:
encode a request frame for transmission to a second wireless device, the request frame comprising a request for the second wireless device to enable a LP-WUR (low-power wake-up radio) mode;
decode a response action frame responsive to the request frame, the response action frame indicating acceptance or rejection of the request, an amount of time for a LP-WUR of the second wireless device to turn on a WLAN (wireless local area network) radio of the second wireless device, and a periodic wake-up interval of the WLAN radio of the second wireless device;
if the response action frame indicates acceptance of the request:
encode an acknowledgement frame for transmission to the second wireless device, the acknowledgement frame to configure the second wireless device to enable the LP-WUR mode; and
encode for transmission, to a LP-WUR of the second wireless device, of a wake-up packet to wake up a WLAN radio of the second wireless device at a time determined based on the amount of time and the periodic wake-up interval in the response action frame; and

if the response action frame indicates rejection of the request:
determine that the second wireless device is not enabling the LP-WUR mode.

2. The apparatus of claim 1 , wherein, in enabling the LP-WUR mode, processing circuitry of the second wireless device is to: set up parameters indicated in the request frame or the response action frame for a future transmission from a LP-WUR transmitter to a LP-WUR receiver, and wherein the first wireless device comprises the LP-WUR transmitter and the second wireless device comprises the LP-WUR receiver.

3. The apparatus of claim 2 , wherein the transmission from the LP-WUR transmitter to the LP-WUR receiver comprises the wake-up packet, and wherein the wake-up packet is configured to cause the second wireless device to wake up the WLAN radio of the second wireless device.

4. The apparatus of claim 2 , wherein the parameters include identification of the second wireless device as the LP-WUR receiver or the first wireless device as the LP-WUR transmitter.

5. The apparatus of claim 2 , wherein the parameters include identification of a plurality of stations, including the second wireless device, intended to receive the future LP-WUR transmission.

6. The apparatus of claim 1 , wherein one bit in the request frame indicates that a station (STA) sending the request frame is taking a role of LP-WUR transmitter.

7. The apparatus of claim 1 , wherein the first wireless device is an access point (AP), and wherein the second wireless device is a non-AP station (STA).

8. The apparatus of claim 1 , wherein the processing circuitry comprises a baseband processor.

9. The apparatus of claim 1 , further comprising a WLAN (wireless local area network) radio to transmit the request to the second wireless device.

10. The apparatus of claim 9 , wherein the WLAN radio is coupled with an antenna.

11. An apparatus of a first wireless device, the apparatus comprising:
memory; and processing circuitry, the processing circuitry to:
decode a request frame, the request frame comprising a request for enabling a LP-WUR (low-power wake-up radio) mode from a second wireless device, the request frame indicating an amount of time for a LP-WUR of the second wireless device to turn on a WLAN (wireless local area network) radio of the second wireless device and a periodic wake-up interval of the WLAN radio of the second wireless device;
determine whether the first wireless device is able to enable the LP-WUR mode;
if the first wireless device is able to enable the LP-WUR mode:
provide a response action frame indicating acceptance of the request;
cause the first wireless device to enable the LP-WUR mode in response to an acknowledgement, from the second wireless device, of the response action frame; and
encode, at a LP-WUR of the first wireless device, a wake-up packet, to the second wireless device, to wake up a WLAN radio of the second wireless device at a time determined based on the amount of time and the periodic wake-up interval in the response action frame; and
if the first wireless device is not able to enable the LP-WUR mode:
provide a response action frame indicating rejection of the request.

12. An apparatus of a first wireless device, the apparatus comprising:
memory; and processing circuitry, the processing circuitry to:
decode a request frame, the request frame comprising a request for enabling a LP-WUR (low-power wake-up radio) mode from a second wireless device, the request frame indicating an amount of time for a LP-WUR of the second wireless device to turn on a WLAN (wireless local area network) radio of the second wireless device and a periodic wake-up interval of the WLAN radio of the second wireless device;
determine whether the first wireless device is able to enable the LP-WUR mode;
if the first wireless device is able to enable the LP-WUR mode:
provide a response action frame indicating acceptance of the request;
cause the first wireless device to enable the LP-WUR mode in response to an acknowledgement, from the second wireless device, of the response action frame; and
encode, at a LP-WUR of the first wireless device, a wake-up packet, to the second wireless device, to wake up a WLAN radio of the second wireless device at a time determined based on the amount of time and the periodic wake-up interval in the response action frame; and
if the first wireless device is not able to enable the LP-WUR mode:
provide a response action frame indicating rejection of the request, wherein, in enabling the LP-WUR mode, the processing circuitry is to:
set up parameters indicated in the request frame or the response action frame for a future transmission from a LP-WUR transmitter to a LP-WUR receiver, and wherein the first wireless device comprises the LP-WUR transmitter and the second wireless device comprises the LP-WUR receiver.

13. The apparatus of claim 12 , wherein the transmission from the LP-WUR transmitter to the LP-WUR receiver comprises the wake-up packet, and wherein the wake-up packet is configured to cause the second wireless device to wake up the WLAN radio of the second wireless device.

14. The apparatus of claim 12 , wherein the parameters include identification of the first wireless device as the LP-WUR transmitter or the second wireless device as the LP-WUR receiver.

15. The apparatus of claim 12 , wherein the parameters include identification of a plurality of stations, including the second wireless device, intended to receive the future LP-WUR transmission.

16. The apparatus of claim 11 , wherein one bit in the request frame indicates that the request frame is for transmission from a LP-WUR receiver and to a LP-WUR transmitter.

17. The apparatus of claim 11 , wherein the second wireless device is a non-access point station, and wherein the first wireless device is an access point (AP).

18. A non-transitory machine-readable medium storing instructions for execution by processing circuitry of a first wireless device, the instructions causing the processing circuitry to:
encode a request frame for transmission to a second wireless device, the request frame comprising a request for the second wireless device to enable a LP-WUR (low-power wake-up radio) mode;
decode a response action frame responsive to the request frame, the response action frame indicating acceptance or rejection of the request, an amount of

Assignees

• Intel Ip Corp

Inventors

• Huang Po-Kai
• Park Minyoung

Classifications

• H04W52/0216

  using a pre-established activity schedule, e.g. traffic indication frame · CPC title

• H04W84/12

  WLAN [Wireless Local Area Networks] · CPC title

• H04W52/0229 Primary

  where the received signal is a wanted signal · CPC title

• Y02D30/70

  in wireless communication networks · CPC title