Methods and arrangements to enable wake-up receiver for modes of operation

Patent metadata

Field	Value
Publication number	US-11647463-B2
Application number	US-201816130646-A
Country	US
Kind code	B2
Filing date	Sep 13, 2018
Priority date	Sep 13, 2017
Publication date	May 9, 2023
Grant date	May 9, 2023

Abstract

Logic may generate a wake-up radio packet, wherein the wake-up radio packet comprises an on-off keying (OOK) signal, a sequence of a preamble of the wake-up radio packet to indicate a rate of transmission of one or more OOK orthogonal frequency-division multiplexing (OFDM) symbols of a medium access control (MAC) frame of the wake-up radio packet, wherein a duration of transmission of the preamble is 128 microseconds for a low data rate and a duration of transmission of the preamble is 64 microseconds for a low data rate. Logic may communicate the wake-up radio packet to a physical layer device to transmit OFDM symbols of an IEEE 802.11 preamble on a channel followed by OOK OFDM symbols of the wake-up radio packet on a sub-band of the channel. And logic may generate at least a second wake-up radio packet to transmit on a contiguous channel bandwidth with OOK OFDM symbols.

First claim

What is claimed is:

1. An apparatus to communicate a wake-up radio (WUR) frame, the apparatus comprising:
a memory; and
logic circuitry coupled with the memory to generate a WUR physical layer protocol data unit (PPDU) comprising a legacy preamble followed by more than one binary phase-shift keying (BPSK) modulated orthogonal frequency-division multiplexing (OFDM) symbols having a 20 megahertz (MHz) bandwidth and the WUR frame, each BPSK symbol having a 4 microsecond duration, wherein the WUR PPDU comprises an on-off keying (OOK) signal, a sequence of a WUR preamble to indicate a data rate of transmission of one or more OOK OFDM symbols of a medium access control (MAC) frame of the WUR frame, wherein a duration of transmission of the WUR preamble is 128 microseconds for a low data rate, wherein each bit in the WUR preamble for the low data rate is mapped to an OOK symbol of a two microsecond duration, and a duration of transmission of the WUR preamble is 64 microseconds for a high data rate, wherein the MAC frame comprises an action frame and a message integrity check (MIC).

2. The apparatus of claim 1 , further comprising a processor, the processor comprising the logic circuitry, a radio coupled with the processor, and one or more antennas coupled with the radio to transmit the WUR PPDU with an orthogonal frequency-division multiple access (OFDMA) modulated signal with OFDM symbols of an IEEE 802.11 preamble on a channel followed by OOK OFDM symbols of the WUR frame on a sub-band of the channel.

3. The apparatus of claim 1 , wherein the WUR frame comprises one or more resource units at a center of a multi-user, orthogonal frequency-division multiple access (OFDMA) modulated signal, at least a second WUR frame to transmit on a contiguous channel bandwidth with OOK OFDM symbols on a sub-band of the contiguous channel bandwidth.

4. The apparatus of claim 1 , wherein the action frame comprises a WUR parameters field to comprise one or more parameters related to WUR operation.

5. The apparatus of claim 4 , wherein the WUR parameters field comprises a duty cycle field.

6. The apparatus of claim 5 , the duty cycle field to comprises a value indicative of a duty cycle.

7. The apparatus of claim 1 , wherein the action frame comprises a WUR mode element.

8. A method to communicate a wake-up radio (WUR) frame, the method comprising:
generating, by logic circuitry, a WUR physical layer protocol data unit (PPDU) comprising a legacy preamble followed by more than one binary phase-shift keying (BPSK) modulated orthogonal frequency-division multiplexing (OFDM) symbols having a 20 megahertz (MHz) bandwidth and the WUR frame, each BPSK symbol having a 4 microsecond duration, wherein the WUR PPDU comprises an on-off keying (OOK) signal, a sequence of a WUR preamble to indicate a data rate of transmission of one or more OOK orthogonal frequency-division multiplexing (OFDM) symbols of a medium access control (MAC) frame of the WUR frame, wherein a duration of transmission of the WUR preamble is 128 microseconds for a low data rate, wherein each bit in the WUR preamble for the low data rate is mapped to an OOK symbol of a two microsecond duration, and a duration of transmission of the WUR preamble is 64 microseconds for a high data rate, wherein the MAC frame comprises an action frame and a message integrity check (MIC); and
communicating the WUR frame.

9. The method of claim 8 , wherein the WUR frame comprises one or more resource units at a center of a multi-user, orthogonal frequency-division multiple access (OFDMA) modulated signal, at least a second WUR frame to transmit on a contiguous channel bandwidth with OOK OFDM symbols on a sub-band of the contiguous channel bandwidth.

10. The method of claim 8 , wherein the action frame comprises a WUR parameters field to comprise one or more parameters related to WUR operation.

11. The method of claim 10 , wherein the WUR parameters field comprises a duty cycle field with a value associated with a duty cycle.

12. The method of claim 8 , wherein the action frame comprises a WUR mode element.

13. A non-transitory computer-readable medium, comprising instructions to communicate a wake-up radio (WUR) frame, which when executed by a processor, cause the processor to perform operations to:
generate a WUR physical layer protocol data unit (PPDU) comprising a legacy preamble followed by more than one binary phase-shift keying (BPSK) modulated orthogonal frequency-division multiplexing (OFDM) symbols having a 20 megahertz (MHz) bandwidth and the WUR frame, each BPSK symbol having a 4 microsecond duration, wherein the WUR PPDU comprises an on-off keying (OOK) signal, a sequence of a WUR preamble to indicate a data rate of transmission of one or more OOK orthogonal frequency-division multiplexing (OFDM) symbols of a medium access control (MAC) frame of the WUR frame, wherein a duration of transmission of the WUR preamble is 128 microseconds for a low data rate, wherein each bit in the WUR preamble for the low data rate is mapped to an OOK symbol of a two microsecond duration, and a duration of transmission of the WUR preamble is 64 microseconds for a high data rate, wherein the MAC frame comprises an action frame and a message integrity check (MIC); and
communicate the WUR frame.

14. The non-transitory computer-readable medium of claim 13 , wherein the action frame comprises a WUR parameters field to comprise one or more parameters related to WUR operation.

15. The non-transitory computer-readable medium of claim 14 , wherein the WUR parameters field comprises a duty cycle field with a value associated with a duty cycle.

16. The non-transitory computer-readable medium of claim 13 , wherein the action frame comprises a WUR mode element.

17. An apparatus to communicate a wake-up radio (WUR) frame, the apparatus comprising:
memory; and
logic circuitry coupled with the memory to decode an on-off keying (OOK) orthogonal frequency-division multiplexing (OFDM) symbols of the WUR frame on a sub-band of a channel, wherein the WUR frame is part of a WUR PPDU and is preceded by more than one binary phase-shift keying (BPSK) modulated orthogonal frequency-division multiplexing (OFDM) symbols having a 20 megahertz (MHz) bandwidth, each BPSK symbol having a 4 microsecond duration, a sequence of a WUR preamble of the WUR frame to indicate a rate of transmission of one or more OOK OFDM symbols of a medium access control (MAC) frame of the WUR frame, wherein a duration of transmission of the WUR preamble is 128 microseconds for a low data rate, wherein each bit in the WUR preamble for the low data rate is mapped to an OOK symbol of a two microsecond duration, and a duration of transmission of the WUR preamble is 64 microseconds for a high data rate, wherein the MAC frame comprises an action frame and a message integrity check (MIC).

18. The apparatus of claim 17 , wherein the action frame comprises a WUR parameters field to comprise one or more parameters related to WUR operation.

19. The apparatus of claim 18 , wherein the WUR parameters field comprises a duty cycle field with a value associated with a duty cycle.

20. The apparatus of claim 17 , wherein the action frame comprises a WUR mode element.

21. A method to communicate a wake-up radio (WUR) frame, the method comprising:
decoding, by a physical layer device, an on-off keying (OOK) orthogonal frequency-division multiplexing (OFDM) symbols of the WUR frame on a sub-band of a channel, wherein the WUR frame is part of a WUR PPDU and is preceded by more

Assignees

• Intel Corp

Inventors

• Azizi Shahrnaz
• Kenney Thomas
• Huang Po-Kai

Classifications

• H04L5/0091

  Signalling for the administration of the divided path, e.g. signalling of configuration information · CPC title

• H04L27/02

  Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation (H04L27/32 takes precedence) · CPC title

• H04W52/0229 Primary

  where the received signal is a wanted signal · CPC title

• H04L5/0053

  Allocation of signalling, i.e. of overhead other than pilot signals · CPC title

• Y02D30/70

  in wireless communication networks · CPC title