Wake-up radio assisted WLAN power saving technologies
First Claim
1. A wireless communication device, comprising:
- a high-power communication module configured to communicate according to a first communication protocol;
a low-power communication module configured to communicate according to a second, different communication protocol; and
at least one processor communicatively coupled to the high-power communication module and the low-power communication module, wherein the at least one processor is configured to execute software instructions to cause the wireless communication device to;
receive from an access point a first beacon according to the first communication protocol, wherein the first beacon indicates that the access point is capable of including in a low-power update (LPU) message, according to the second communication protocol, an indication that the access point has data available to send to the wireless communication device according to the first communication protocol;
after receiving the first beacon, transition the high-power communication module to an inactive state;
receive the LPU message via the low-power communication module, according to the second communication protocol, while the high-power communication module is in an inactive state;
determine that the LPU message comprises a traffic indication map (TIM) indicating that the access point has data available to send to the wireless communication device according to the first communication protocol;
in response to the determining, transition the high-power communication module from the inactive state to an active state; and
receive a data message including the data via the high-power communication module while the high-power communication module is in the active state.
1 Assignment
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Accused Products
Abstract
A dual-radio AP including both a high-power (e.g., Wi-Fi) radio and a low-power (e.g., BLE) radio may support an assisted wakeup service for a power-limited dual-radio mobile device (STA). The power-limited STA may register with the AP for the assisted wakeup service, and may then disable its Wi-Fi radio (or otherwise initiate a lower-power mode). The power-limited STA may receive a BLE communication indicating the AP has pending Wi-Fi transmissions or updates applicable to the power-limited STA. In response, the power-limited STA may turn on its Wi-Fi radio and receive the pending transmissions or updates from the AP. If an AP does not include a low-power radio, then a high-power/low-power dual-radio STA that is not power-limited may serve as an assisted wakeup service proxy. The proxy may scan and trace the Wi-Fi beacons from the AP, and generate the BLE communication to the power-limited STA on behalf of the AP.
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Citations
17 Claims
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1. A wireless communication device, comprising:
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a high-power communication module configured to communicate according to a first communication protocol; a low-power communication module configured to communicate according to a second, different communication protocol; and at least one processor communicatively coupled to the high-power communication module and the low-power communication module, wherein the at least one processor is configured to execute software instructions to cause the wireless communication device to; receive from an access point a first beacon according to the first communication protocol, wherein the first beacon indicates that the access point is capable of including in a low-power update (LPU) message, according to the second communication protocol, an indication that the access point has data available to send to the wireless communication device according to the first communication protocol; after receiving the first beacon, transition the high-power communication module to an inactive state; receive the LPU message via the low-power communication module, according to the second communication protocol, while the high-power communication module is in an inactive state; determine that the LPU message comprises a traffic indication map (TIM) indicating that the access point has data available to send to the wireless communication device according to the first communication protocol; in response to the determining, transition the high-power communication module from the inactive state to an active state; and receive a data message including the data via the high-power communication module while the high-power communication module is in the active state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A non-transitory computer-readable medium storing software instructions executable by a processor of a wireless communication device to cause the wireless communication device to:
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receive from an access point, via a high-power communication module of the wireless communication device, a first beacon according to a high-power communication protocol, wherein the first beacon indicates that the access point is capable of including in a low-power update (LPU) message, according to a low-power communication protocol, an indication that the access point has data available to send to the wireless communication device according to the high-power communication protocol; after receiving the first beacon, transition the high-power communication module to an inactive state; receive the LPU message via the low-power communication module of the wireless communication device, according to the low-power communication protocol, while the high-power communication module of the wireless communication device is in the inactive state; determine that the LPU message comprises a traffic indication map (TIM) indicating that the access point has data available to send to the wireless communication device according to the high-power communication protocol; in response to the determining, transition the high-power communication module from the inactive state to an active state; and receive a data message including the data via the high-power communication module while the high-power communication module is in the active state. - View Dependent Claims (11, 12, 13)
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14. A method for performing an assisted wakeup service, the method comprising:
by a wireless communication device; receiving from an access point, via a high-power communication module of the wireless communication device, a first beacon according to a high-power communication protocol, wherein the first beacon indicates that the access point is capable of including in a low-power update (LPU) message, according to a low-power communication protocol, an indication that the access point has data available to send to the wireless communication device according to the high-power communication protocol; after receiving the first beacon, transitioning the high-power communication module to an inactive state; receiving the LPU message via the low-power communication module of the wireless communication device, according to the low-power communication protocol, while the high-power communication module of the wireless communication device is in the inactive state; determining that the LPU message comprises a traffic indication map (TIM) indicating that the access point has data available to send to the wireless communication device according to the high-power communication protocol; in response to the determining, transitioning the high-power communication module from the inactive state to an active state; and receiving a data message including the data via the high-power communication module while the high-power communication module is in the active state. - View Dependent Claims (15, 16, 17)
Specification