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US 9,313,739 B2Granted
Systems and methods for low power wake up signal and operations for WLAN
AssigneeQUALCOMM Incorporated
InventorsAmin Jafarian, Simone Merlin, Tian Bin
Life of this patent
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Abstract
Systems, methods, and devices for wireless communications are disclosed. In one aspect, an apparatus for wireless communications includes a transceiver configured to wirelessly transmit and receive packets. The apparatus further includes a wake up circuit configured to wirelessly receive packets. The apparatus is further configured to detect reception of a wake up signal via the receiver and execute a command based on the wake up signal. In another aspect, an apparatus is disclosed, which generates and transmits wake up signals.
Claims84
An apparatus for wireless communications, comprising:
- a receiver configured to:
- receive a target wakeup time signal from a wireless communication device indicating a time at which a wake up signal will be transmitted and further indicating a time period during which the apparatus is to be awake, wherein the apparatus is configured to receive the wake up signal as the first frame in the indicated time period if a) there are buffered units for the receiver, b) there are critical changes to a beacon, or c) a max time from a previous wake up signal has expired, and wherein the apparatus is configured to receive no frame in the indicated time period if none of the conditions a)-c) is met;
- and
- wirelessly receive the wake up signal comprising a first portion indicating instructions to activate the receiver and a second portion indicating instructions to execute a selected one of a plurality of actions in response to receiving the wake up signal from the wireless communication device;
- and
- a processor configured to cause the apparatus to execute the selected one of the plurality of actions in response to receiving the wake up signal.
3 more elements
A method of wireless communication, comprising:
- receiving, at a receiver, a target wakeup time signal from a wireless communication device indicating a time at which a wake up signal will be transmitted and further indicating a time period during which the receiver is to be awake, wherein the wake up signal is received as the first frame in the indicated time period if a) there are buffered units for the receiver, b) there are critical changes to a beacon, or c) a max time from a previous wake up signal has expired, and wherein no frame is received in the indicated time period if none of the conditions a)-c) is met;
- wirelessly receiving the wake up signal comprising a first portion indicating instructions to activate the receiver, and a second portion indicating instructions to execute a selected one of a plurality of actions in response to receiving the wake up signal from the wireless communication device;
- and
- executing the selected one of the plurality of actions in response to receiving the wake up signal.
1 more element
An apparatus for wireless communications, comprising:
- means for receiving a target wakeup time signal from a wireless communication device indicating a time at which a wake up signal will be transmitted and further indicating a time period during which the means for receiving is to be awake, wherein the wake up signal is received as the first frame in the indicated time period if a) there are buffered units for the means for receiving, b) there are critical changes to a beacon, or c) a max time from a previous wake up signal has expired, and wherein no frame is received in the indicated time period if none of the conditions a)-c) is met, the means for receiving being further configured to wirelessly receive the wake up signal comprising a first portion indicating instructions to activate the means for receiving, and a second portion indicating instructions to execute a selected one of a plurality of actions in response to receiving the wake up signal from the wireless communication device;
- and
- means for executing the selected one of the plurality of actions in response to receiving the wake up signal.
An apparatus for wireless communications, comprising:
- a processor, configured to generate a wake up signal comprising a first portion indicating instructions to activate a receiver of a wireless communication device, and a second portion indicating instructions for the wireless communication device to execute a selected one of a plurality of actions in response to receiving the wake up signal;
- and
- a transmitter configured to:
- transmit a target wakeup time signal to the wireless communication device indicating a time at which the wake up signal will be transmitted and further indicating a time period during which the wireless communication device is to be awake, wherein the apparatus is configured to transmit the wake up signal to the wireless communication device as the first frame in the indicated time period if a) there are buffered units for the wireless communication device, b) there are critical changes to a beacon, or c) a max time from a previous wake up signal has expired, and wherein the apparatus is configured to transmit no frame to the wireless communication device in the indicated time period if none of the conditions a)-c) is met;
- and
- wirelessly transmit the wake up signal to the wireless communication device.
3 more elements
A method of wireless communication, comprising:
- generating a wake up signal comprising a first portion indicating instructions to activate a receiver of a wireless communication device, and a second portion indicating instructions for the wireless communication device to execute a selected one of a plurality of actions in response to receiving the wake up signal;
- transmitting a target wakeup time signal to the wireless communication device indicating a time at which the wake up signal will be transmitted and further indicating a time period during which the wireless communication device is to be awake, wherein the wake up signal is transmitted to the wireless communication device as the first frame in the indicated time period if a) there are buffered units for the wireless communication device, b) there are critical changes to a beacon, or c) a max time from a previous wake up signal has expired, and wherein no frame is transmitted to the wireless communication device in the indicated time period if none of the conditions a)-c) is met;
- and
- wirelessly transmitting the wake up signal to the wireless communication device.
1 more element
An apparatus for wireless communications, comprising:
- means for generating a wake up signal comprising a first portion indicating instructions to activate a receiver of a wireless communication device, and a second portion indicating instructions for the wireless communication device to execute a selected one of a plurality of actions in response to receiving the wake up signal;
- and
- means for transmitting a target wakeup time signal to the wireless communication device indicating a time at which the wake up signal will be transmitted and further indicating a time period during which the wireless communication device is to be awake, wherein the wake up signal is transmitted to the wireless communication device as the first frame in the indicated time period if a) there are buffered units for the wireless communication device, b) there are critical changes to a beacon, or c) a max time from a previous wake up signal has expired, and wherein no frame is transmitted to the wireless communication device in the indicated time period if none of the conditions a)-c) is met, the means for transmitting being further configured to wirelessly transmit the wake up signal to the wireless communication device.
Dependencies are inferred from the claim text.