Methods and apparatus for low power wake up signal and operations for wlan

Patent metadata

Field	Value
Publication number	US-2016242115-A1
Application number	US-201615098917-A
Country	US
Kind code	A1
Filing date	Apr 14, 2016
Priority date	Jan 31, 2013
Publication date	Aug 18, 2016
Grant date	—

Abstract

Methods and apparatuses for wireless communications are disclosed. In one aspect, an apparatus for wireless communications includes a receiver configured to wirelessly receive a message comprising a time for the apparatus to wake up and instructions to execute an action in response to receiving a paging frame from a wireless communication device. The receiver is further configured to receive the paging frame from the wireless communication device. The apparatus further includes a processor configured to execute the action in response to receiving the paging frame. In one implementation, receiving the paging frame comprises comparing an address of the paging frame with an address of the apparatus. The action may include one or more of sending a power save poll frame, waiting for packet reception, receiving the beacon, and receiving the delivery traffic indication message beacon.

First claim

What is claimed is:

1 . An apparatus for wireless communications, comprising:
a processor configured to:
generate a message comprising a target wake up time information element indicating a first time for a wireless communication device to wake up and instructions to execute an action in response to receiving a paging frame from the apparatus, the first time for the wireless communication device to wake up indicating at least a second time at which the paging frame is transmitted; and
generate the paging frame; and
a transmitter configured to:
transmit the message to the wireless communication device; and
subsequently transmit the paging frame to the wireless communication device based on the indicated second time.

2 . The apparatus of claim 1 , wherein the paging frame includes an address of the paging frame.

3 . The apparatus of claim 1 , wherein the paging frame comprises a direction field having a value indicating whether the apparatus is an access point.

4 . The apparatus of claim 1 , wherein the paging frame is selectably configurable to store timing information.

5 . The apparatus of claim 1 , wherein the paging frame comprises a null data packet.

6 . The apparatus of claim 1 , wherein the action includes one or more of:
sending a power save poll frame, waiting for packet reception, receiving a beacon, and receiving a delivery traffic indication message beacon.

7 . The apparatus of claim 1 , wherein the message indicates a time period including the indicated second time during which the wireless communication device is to be awake, and the paging frame is the first frame the apparatus is configured to transmit to the wireless communication device during the indicated time period.

8 . The apparatus of claim 1 , wherein the message indicates a time period including the indicated second time during which the wireless communication device is to be awake, and the apparatus is further configured to refrain from transmitting any frame other than the paging frame to the wireless communication device during the indicated time period.

9 . The apparatus of claim 1 , wherein the transmitter is further configured to transmit the message at a third time that is different from the first time for the wireless communication device to wake up.

10 . A method for wireless communications, comprising:
generating a message comprising a target wake up time information element indicating a first time for a wireless communication device to wake up and instructions to execute an action in response to receiving a paging frame from the apparatus, the first time for the wireless communication device to wake up indicating at least a second time at which the paging frame is transmitted; transmitting the message, from an apparatus, to the wireless communication device; generating the paging frame; and subsequently transmitting the paging frame to the wireless communication device based on the indicated second time.

11 . The method of claim 10 , wherein the paging frame includes an address of the paging frame.

12 . The method of claim 10 , wherein the paging frame comprises a direction field having a value indicating whether the apparatus is an access point.

13 . The method of claim 10 , wherein the paging frame is selectably configurable to store timing information.

14 . The method of claim 10 , wherein the paging frame comprises a null data packet.

15 . The method of claim 10 , wherein the action includes one or more of:
sending a power save poll frame, waiting for packet reception, receiving a beacon, and receiving a delivery traffic indication message beacon.

16 . The method of claim 10 , wherein the message indicates a time period including the indicated second time during which the wireless communication device is to be awake, and the paging frame is the first frame transmitted to the wireless communication device during the indicated time period.

17 . The method of claim 10 , wherein the message indicates a time period including the indicated second time during which the wireless communication device is to be awake, the paging frame being the only frame transmitted from the apparatus to the wireless communication device during the indicated time period.

18 . The method of claim 10 , further comprising transmitting the message at a third time that is different from the first time for the wireless communication device to wake up.

19 . An apparatus for wireless communications, comprising:
means for generating configured to:
generate a message comprising a target wake up time information element indicating a first time for a wireless communication device to wake up and instructions to execute an action in response to receiving a paging frame from the apparatus, the first time for the wireless communication device to wake up indicating at least a second time at which the paging frame is transmitted; and
generate the paging frame; and
means for transmitting configured to:
transmit the message to the wireless communication device; and
subsequently transmit the paging frame to the wireless communication device based on the indicated second time.

20 . The apparatus of claim 19 , wherein the paging frame includes an address of the paging frame.

21 . The apparatus of claim 19 , wherein the paging frame comprises a direction field having a value indicating whether the apparatus is an access point.

22 . The apparatus of claim 19 , wherein the paging frame is selectably configurable to store timing information.

23 . The apparatus of claim 19 , wherein the paging frame comprises a null data packet.

24 . The apparatus of claim 19 , wherein the action includes one or more of:
sending a power save poll frame, waiting for packet reception, receiving a beacon, and receiving a delivery traffic indication message beacon.

25 . The apparatus of claim 19 , wherein the message indicates a time period including the indicated second time during which the wireless communication device is to be awake, and the paging frame is the first frame the means for transmitting is configured to transmit to the wireless communication device during the indicated time period.

26 . The apparatus of claim 19 , wherein the message indicates a time period including the indicated second time during which the wireless communication device is to be awake, and the means for transmitting is further configured to refrain from transmitting any frame other than the paging frame to the wireless communication device during the indicated time period.

27 . The apparatus of claim 19 , wherein the means for transmitting is further configured to transmit the message at a third time that is different from the first time for the wireless communication device to wake up.

28 . A system for wireless communications, comprising:
a first apparatus for wireless communications, comprising:
a first processor configured to:
generate a message comprising a target wake up time information element indicating a first time for a second apparatus for wireless communications to wake up and instructions to execute an action in response to receiving a paging frame from the apparatus, the first time for the second apparatus for wireless communications to wake up indicating at least a second time at which the paging frame is transmitted; and
generate the paging

Assignees

• Qualcomm Inc

Inventors

• Jafarian Amin
• Merlin Simone

Classifications

• H04W68/02

  Arrangements for increasing efficiency of notification or paging channel · CPC title

• H04W52/0229

  where the received signal is a wanted signal · CPC title

• H04W84/12

  WLAN [Wireless Local Area Networks] · CPC title

• H04W52/0216 Primary

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

• Y02D30/70

  in wireless communication networks · CPC title