Device wake-up method and apparatus

By sending a combination of the first and second sequences, the problem of low-power devices being unable to respond to wake-up signals in a timely manner during sleep mode is solved, enabling rapid wake-up and accurate detection, reducing the risk of data packet loss, and improving the device's wake-up efficiency and detection accuracy.

WO2026156891A1PCT designated stage Publication Date: 2026-07-30HUAWEI TECH CO LTD
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
HUAWEI TECH CO LTD
Filing Date
2025-01-27
Publication Date
2026-07-30

AI Technical Summary

Technical Problem

The existing periodic wake-up mechanism cannot respond to sudden communication needs in real time, which causes low-power devices to be unable to respond to wake-up signals in time when in sleep mode, resulting in low wake-up efficiency and high risk of data packet loss.

Method used

By sending a combination of a first sequence and a second sequence, the first sequence is used to trigger the device to detect the wake-up sequence. After receiving the first sequence, the device can start detection and directly detect the second sequence to determine whether it is a wake-up sequence, thereby improving wake-up efficiency and detection accuracy.

Benefits of technology

It enables rapid wake-up and accurate detection of low-power devices in sleep mode, reduces the risk of data packet loss, and improves the wake-up efficiency and detection accuracy of the devices.

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Abstract

The present application relates to the technical field of wireless communications. Provided are a device wake-up method and apparatus, which are used for improving the wake-up efficiency of a device. The present application supports any one of the IEEE protocols, or the present application may also support the Sparklink / Nearlink standard protocol, or the present application may also support the Ambient-IoT protocol, or the RFID protocol, or the NFC protocol. In the present application, a first device receives a first sequence, wherein the first sequence is configured to trigger the first device to detect a wake-up sequence; and the first device receives a second sequence, wherein the second sequence is configured to wake up the first device, the first sequence being different from the second sequence. In the present application, the first sequence received by the first device is configured to trigger the first device to detect the wake-up sequence, and upon receiving the first sequence, the first device can initiate the detection of the wake-up sequence, thereby improving wake-up efficiency.
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Claims

1. A device wake-up method, characterized in that, The method includes: Receive a first sequence, the first sequence being used to trigger a first device to detect a wake-up sequence; A second sequence is received, which is used to wake up the first device, and the first sequence is different from the second sequence.

2. The method as described in claim 1, characterized in that, The first sequence is used to cause the first module of the first device to reach a detection threshold, and the first module is used to detect the wake-up sequence.

3. The method as described in claim 2, characterized in that, The method further includes: If the received strength corresponding to the first sequence is greater than or equal to the detection threshold, the detection wake-up sequence is initiated.

4. The method according to any one of claims 1 to 3, characterized in that, The first sequence includes at least one first bit, the first bit having a first value, the first value corresponding to a high level.

5. The method according to any one of claims 1 to 3, characterized in that, All bits of the first sequence are set to the first value, which corresponds to a high level.

6. The method according to any one of claims 1 to 5, characterized in that, The length of the first sequence is variable.

7. The method as described in claim 6, characterized in that, The sequence length of the first sequence is related to the channel quality of the first sub-channel, which is a sub-channel included in the operating frequency band of the first device.

8. The method as described in claim 7, characterized in that, The sequence length of the first sequence is determined according to the first table, which describes the correspondence between channel quality and sequence length.

9. The method according to any one of claims 1 to 8, characterized in that, The receiving of the first sequence includes: The first sequence is received on at least two first sub-channels, wherein the first sub-channels are sub-channels included in the operating frequency band of the first device.

10. The method according to any one of claims 1 to 9, characterized in that, The receiving of the second sequence includes: The second sequence is received on at least two first sub-channels, wherein the first sub-channels are sub-channels included in the operating frequency band of the first device.

11. The method according to any one of claims 1 to 10, characterized in that, The first sequence and the second sequence may be adjacent or not adjacent.

12. A device wake-up method, characterized in that, The method includes: Send a first sequence, which is used to trigger a first device to detect a wake-up sequence; Send a second sequence, which is a wake-up sequence.

13. The method as described in claim 12, characterized in that, The first sequence is used to cause the first module of the first device to reach a detection threshold, and the first module is used to detect the wake-up sequence.

14. The method as described in claim 12 or 13, characterized in that, The first sequence includes at least one first bit, the first bit having a first value, the first value corresponding to a high level.

15. The method as described in claim 12 or 13, characterized in that, All bits of the first sequence are set to the first value, which corresponds to a high level.

16. The method according to any one of claims 12 to 15, characterized in that, The length of the first sequence is variable.

17. The method as described in claim 16, characterized in that, The sequence length of the first sequence is related to the channel quality of the first sub-channel, which is a sub-channel included in the operating frequency band of the first device.

18. The method as described in claim 17, characterized in that, The sequence length of the first sequence is determined according to the first table, which describes the correspondence between channel quality and sequence length.

19. The method according to any one of claims 12 to 18, characterized in that, The sending of the first sequence includes: The first sequence is transmitted on at least two first sub-channels, wherein the first sub-channels are sub-channels included in the operating frequency band of the first device.

20. The method according to any one of claims 12 to 19, characterized in that, The sending of the second sequence includes: The second sequence is transmitted on at least two first sub-channels, wherein the first sub-channels are sub-channels included in the operating frequency band of the first device.

21. The method according to any one of claims 12 to 20, characterized in that, The first sequence and the second sequence may be adjacent or not adjacent.

22. A communication device, characterized in that, Includes a module for performing the method according to any one of claims 1 to 11.

23. A communication device, characterized in that, Includes a module for performing the method according to any one of claims 12 to 21.

24. A communication device, characterized in that, It includes at least one processor and an interface circuit, the processor being configured to communicate with other devices via the interface circuit to implement the method of any one of claims 1 to 11.

25. A communication device, characterized in that, It includes at least one processor and an interface circuit, the processor being configured to communicate with other devices via the interface circuit to implement the method of any one of claims 12 to 21.

26. A communication system, characterized in that, include: A first apparatus for implementing the method according to any one of claims 1 to 11, and a second apparatus for implementing the method according to any one of claims 12 to 21.

27. A computer program product, characterized in that, The computer program product includes a computer program or instructions that, when executed, implement the method of any one of claims 1 to 11, or the method of any one of claims 12 to 21.

28. A computer-readable storage medium, characterized in that, The storage medium stores a computer program or instructions, which, when executed, implement the method of any one of claims 1 to 11, or the method of any one of claims 12 to 21.