WO2018094921A1

WO2018094921A1 - Message processing method and apparatus

Info

Publication number: WO2018094921A1
Application number: PCT/CN2017/077337
Authority: WO
Inventors: 杜振国; 丁志明; 李小仙; 杨云松
Original assignee: 华为技术有限公司
Priority date: 2016-11-23
Filing date: 2017-03-20
Publication date: 2018-05-31
Also published as: CN109565354A; CN109565354B

Abstract

A message processing method and apparatus. The method comprises: a first device generating a wake-up radio presentation protocol data unit (WUR PPDU), the WUR PPDU comprising a first portion and a second portion, the first portion being located before the second portion, the first portion conforming to a first standard protocol, and the second portion conforming to a second standard protocol, the second standard protocol being a WUR standard; the first portion comprises a legacy preamble and a physical header field, the physical header field comprising a WUR indication, the WUR indication being used for indicating that the second portion is comprised after the first portion in the WUR PDDU, and the WUR indication being a predefined reserve value of a first sub-field in the physical header field; and the first device sending the WUR PPDU.

Description

Message processing method and device

This application claims the priority of the Chinese Patent Application, filed on November 23, 2016, to the Chinese Patent Office, Application No. 201611059745.0, entitled "A Method and Apparatus for Sending WUR PPDUs", the entire contents of which are incorporated by reference. In this application.

Technical field

The present application relates to the field of wireless communications, and in particular, to a packet processing method and apparatus.

Background technique

The Institute of Electrical and Electronics Engineers (IEEE) 802.11 standard organization plans to develop a Wireless Fidelity (WiFi) Internet of Things (IoT) standard based on the 2.4 GHz/5 GHz band. It is low power and long distance. For the former, one possible method is to use Low Power (LP) Wake-up Radio (WUR) on the WiFi IoT device side. The wake-up radio is also referred to as a wake-up receiver (WUR), and is uniformly referred to as a wake-up radio in the embodiment of the present application.

In order to wake up a device such as a WiFi IoT device through WUR, a WUR Protocol Data Unit (PPDU) has been proposed. The WUR PPDU includes a legacy preamble portion of a series of protocols that satisfy the 802.11 standard and a WUR payload portion that satisfies the WUR standard. The WUR payload portion of the WUR PPDU is modulated in an easy-to-demodulate manner, such as On-Off Key (OOK) modulation, and transmitted over a narrower bandwidth (the minimum bandwidth of the legacy preamble is 20 MHz), such as a 2 MHz channel. 4MHz channel, 5MHz channel, etc., so that the receiving end needs less energy consumption when parsing the WUR PPDU.

However, since the traditional preamble part of the WUR PPDU complies with the old 802.11 protocol, when the traditional third party device receives the WUR PPDU, according to the traditional preamble part of the WUR PPDU, it will consider that the received PPDU conforms to the old 802.11 protocol. Further, according to the PPDU format of the old 802.11 protocol, the part of the WUR PPDU that is located after the traditional preamble (that is, the part of the WUR payload that satisfies the WUR standard) is parsed. In this way, a check error occurs and the discard is finally discarded. PPDU, which increases the power consumption of third-party devices. Especially when the third-party device is also a WiFi IoT device, it will cause the third-party WiFi IoT device to consume a lot of power. The WiFi IoT device often has high power consumption requirements, and it is hoped that the device can save power as much as possible. Therefore, the above WUR PPDU design is also very disadvantageous for the power saving of the WiFi IoT device.

At present, there is no effective way to realize the device that wakes up through the WUR PPDU and does not increase the power consumption of other devices.

Summary of the invention

The purpose of the embodiments of the present application is to provide a packet processing method and device, which are used to wake up a device that needs to wake up through a WUR PPDU, without increasing the power consumption of other devices.

The application provides a plurality of method embodiments and device embodiments, including:

1. A message processing method, comprising:

The first device generates a wakeup radio protocol data unit WUR PPDU, the WUR PPDU including a first portion and a second portion, the first portion being located before the second portion, the first portion conforming to the first standard protocol, and the second portion Partially conforming to the second standard protocol, the second standard protocol is the WUR standard; the first part comprises a traditional preamble and a physical header field;

The physical header field includes a WUR indication, where the WUR indication is used to indicate that the second part is included after the first part in the WUR PPDU, and the WUR indication is the first in the physical header field. a predefined reserved value for a subdomain;

The first device sends the WUR PPDU.

According to the method provided by the embodiment of the present application, the first device includes a WUR indication in the first part of the transmitted WUR PPDU conforming to the first standard protocol, so that the primary communication interface of the receiving device conforms to the first standard protocol (may be called: After receiving the first part, the main radio can know that the second part of the WUR PPDU conforms to the second standard protocol (for example, the WUR standard) according to the WUR indication, thereby opening its own WUR interface to receive the second part. At other times, the WUR interface of the receiving device can be in a dormant or off state, thereby achieving power saving. Meanwhile, since the WUR indication can be represented by a predefined reserved value of the first subfield in the first part of the WUR PPDU, the legacy WiFi device that does not support the second standard protocol can correctly receive the first part but cannot parse the first sub The meaning of the WUR indication in the domain, so that the second part may not be continuously received, thus making the conventional WiFi device not supporting the second standard protocol more power efficient.

2. The method according to 1, the first standard protocol is 802.11n, and the physical header field comprises a high throughput signaling HT-SIG domain;

The first sub-domain is a modulation coding scheme MCS sub-domain in the HT-SIG domain, or the first sub-domain is a reserved bit in the HT-SIG domain.

According to the above method, since the first standard protocol is 802.11n, and the WUR indication is represented by a predefined reserved value of the first subfield in the first part, 802.11n or later standard protocols (such as 802.11ac, 802.11ax, etc.) are supported but The receiving device that does not support the second standard protocol does not parse the meaning of the WUR indication in the first sub-domain of the first part after receiving the first part of the WUR PPDU provided by the foregoing method, so that the receiving devices do not receive the WUR PPDU. The second part, which makes these receiving devices more power efficient. Meanwhile, in the above method, when the main radio of the WUR device of the main radio adopting the 802.11ax or 802.11ac or 802.11n standard protocol is in an active state, the WUR can be turned off, and only when the WUR device receives the inclusion on its main radio. When the first part of the WUR PPDU indicated by the WUR parses the meaning of the WUR indication, the WUR is notified to open and receive the subsequent second part, thereby saving power consumption of the device.

3. The method according to 1, the first standard protocol is 802.11ac, and the physical header field comprises a very high throughput signaling-A VHT-SIG-A domain;

The first sub-domain is an MCS sub-domain in the VHT-SIG-A domain, or the first sub-domain is a reserved bit in the VHT-SIG-A domain.

According to the above method, since the first standard protocol is 802.11ac, and the WUR indication is represented by a predefined reserved value of the first sub-domain in the first part, the 802.11ac or later standard (such as 802.11ax, etc.) is supported but the second is not supported. After receiving the first part of the WUR PPDU provided by the foregoing method, the receiving device of the standard protocol cannot resolve the meaning of the WUR indication in the first sub-domain of the first part, so that the receiving devices do not receive the second in the WUR PPDU. Part to make the receiving device more power efficient. At the same time, when the main radio of the WUR device using the 802.11ax or 802.11ac standard protocol is active, the WUR can be disabled. Only when the WUR device receives the first part of the WUR PPDU containing the WUR indication on the main radio and parses it. When the meaning of the WUR indication is made, the WUR is notified to open and receive the subsequent second part, thereby saving power consumption of the device.

4. The method according to 1, the first standard protocol is 802.11ax, the physical header field comprises a repetition of a traditional preamble signaling RL-SIG domain and an efficient signaling-A HE-SIG-A domain, the Some of them conform to the efficient single-user HE SU PPDU format;

The first sub-domain is an MCS sub-domain in the HE-SIG-A domain, or the first sub-domain is a reserved bit in the HE-SIG-A domain.

According to the above method, since the first standard protocol is 802.11ax, and the WUR indication is represented by a predefined reserved value of the first sub-domain in the first part, the receiving device supporting the 802.11ax or later standard but not supporting the second standard protocol is After receiving the first part of the WUR PPDU provided by the foregoing method, since the meaning of the WUR indication in the first sub-domain of the first part cannot be resolved, the receiving device does not receive the second part of the WUR PPDU, thereby making the receiving device More energy saving. At the same time, when the main radio of the 802.11ax WUR device is activated, the WUR can be disabled. Only when the device receives the first part of the WUR PPDU containing the WUR indication on the main radio and parses the WUR indication. The meaning is that the WUR is notified to open and receive the subsequent second part, thereby saving power consumption of the device.

5. The method according to 1, the first standard protocol is 802.11ax, the physical header field comprises an RL-SIG domain and an HE-SIG-A domain, and the first part conforms to a high-efficiency extended range single-user HE ER SU PPDU format;

The first sub-domain is an MCS sub-domain in the HE-SIG-A domain, or the first sub-domain is a reserved bit in the HE-SIG-A domain, or the first sub-domain is The Nsts subfield in the HE-SIG-A domain, or the first subdomain is a BW subdomain in the HE-SIG-A domain.

6. The method of any of 1 to 5, wherein the first portion further comprises a receiving end identifier that receives the receiving end of the WUR PPDU.

According to the above method, when the receiving end determines that the receiving end identifier in the received WUR PPDU is different from its own identifier, the subsequent part of the WUR PPDU may not be received (and parsed), thereby saving power consumption of the device.

7. The method of any of 1 to 6, the first portion further comprising an identification of a basic service set BSS to which the first device belongs.

According to the foregoing method, when the receiving end determines that the identifier of the BSS in the received WUR PPDU is different from the identifier of the BSS to which the UE belongs, the subsequent part of the received WUR PPDU may not be received (and parsed), thereby saving. The power consumption of the device.

Based on the same inventive concept, the embodiment of the present application provides a packet processing apparatus, which can implement any one of the foregoing multiple packet processing methods provided in the above 1-7.

In a possible design, the device includes a plurality of functional modules, for example, including a processing unit and a transceiver unit, for implementing any of the packet processing methods provided above, so that the device conforms to the transmitted WUR PPDU. When the WUR indication is included in the first part of a standard protocol, the primary communication interface of the receiving device conforming to the first standard protocol can obtain the second part of the WUR PPDU according to the WUR indication after receiving the first part according to the WUR indication. The protocol (for example, the WUR standard) opens its own WUR interface to receive the second part. At other times, the WUR interface of the receiving device can be in a dormant or off state, thereby achieving power saving. Meanwhile, since the WUR indication can be represented by a predefined reserved value of the first subfield in the first part of the WUR PPDU, the legacy WiFi device that does not support the second standard protocol can correctly receive the first part but cannot parse the first sub The meaning of the WUR indication in the domain, so that the second part may not be continuously received, thus making the conventional WiFi device not supporting the second standard protocol more power efficient.

In one possible design, the apparatus includes a processor and a transceiver configured to support the apparatus to perform corresponding functions in the message processing method described above. The transceiver is configured to support communication between the device and other devices, and receive or transmit WUR PPDUs or instructions involved in the message processing method to other devices. The apparatus can also include a memory for coupling with the processor that retains the program instructions and data necessary for the apparatus.

Based on the same inventive concept, an embodiment of the present application provides a non-volatile computer storage medium storing computer-executable instructions for causing the The computer executes any of the above message processing methods.

Based on the same inventive concept, an embodiment of the present application provides a computer program product, the computer program product comprising a computing program stored on a non-transitory computer readable storage medium, the computer program comprising the computer executable instruction And when the computer executable instructions are executed by a computer, causing the computer to execute any of the above message processing methods.

The method embodiments and device embodiments provided by the application further include:

8. A message processing method, comprising:

The second device receives a wake-up radio frequency protocol data unit WUR PPDU sent by the first device, where the WUR PPDU includes a first part and a second part, where the first part is located before the second part, and the first part conforms to the first standard protocol. The second part conforms to the second standard protocol, and the second standard protocol is the WUR standard; the first part comprises a traditional preamble and a physical header field;

Wherein the physical header field includes a WUR indication, the WUR indication is used to indicate that the first part is followed by the second part, and the WUR indication is a predefined reservation of a first sub-domain in the physical header domain. value;

If the second device determines that the second part is included in the WUR PPDU according to the WUR indication, when the second device meets a preset condition, the second part is received and parsed by the WUR; The preset condition includes: the second device includes a WUR.

According to the method provided by the embodiment of the present application, after the second device receives the WUR PPDU, if it is determined according to the WUR indication in the WUR PPDU that the WUR PPDU includes the second part that conforms to the WUR standard, the second device determines to satisfy the second device. When the condition is preset, the WUR interface is opened to receive the second part, and the second part is parsed by WUR. At other times, the WUR interface of the second device can be in a dormant or off state, thereby achieving power saving.

9. The method according to 8, the first standard protocol is 802.11n, and the physical header field comprises a high throughput signaling HT-SIG domain;

According to the above method, since the first standard protocol is 802.11n, and the WUR indication is represented by a predefined reserved value of the first sub-domain in the first part, the second device supports 802.11n or later standards (such as 802.11ac, 802.11ax). When the device of the second standard protocol is not supported, after receiving the first part of the WUR PPDU provided by the foregoing method, it may be determined according to the WUR indication in the first sub-domain of the first part that the meaning of the received WUR indication cannot be resolved. Therefore, the second part of the WUR PPDU is not received, thereby saving power consumption of the device. At the same time, when the second device is a device such as a 802.11ax or 802.11ac or 802.11n WUR device, the WUR can be disabled when the main radio is in the active state, and only notified when the second device detects the WUR indication on the main radio. The WUR turns on and receives the subsequent second part, thereby saving power consumption of the second device.

10. The method according to 8, the first standard protocol is 802.11ac, and the physical header field comprises a very high throughput signaling-A VHT-SIG-A domain;

According to the above method, since the first standard protocol is 802.11ac, and the WUR indication is represented by a predefined reserved value of the first sub-domain in the first part, the second device supports 802.11ac or later standards (such as 802.11ax, etc.) but When the device of the second standard protocol is not supported, after receiving the first part of the WUR PPDU provided by the foregoing method, the meaning of the WUR indication in the first sub-domain of the first part cannot be parsed, so that the first part of the WUR PPDU is not received. The second part, so that the second device is more energy efficient. At the same time, when the second device is a WUR device such as 802.11ax or 802.11ac for the main radio, when the main radio is in the active state, the WUR can be turned off, and the WUR is notified only when the main radio of the second device detects the WUR indication. The subsequent second part is received, thereby saving power consumption of the second device.

11. The method according to 8, the first standard protocol is 802.11ax, the physical header field comprises a repetition of a traditional preamble signaling RL-SIG domain and an efficient signaling-A HE-SIG-A domain, the Some of them conform to the efficient single-user HE SU PPDU format;

According to the above method, since the first standard protocol is 802.11ax, and the WUR indication is represented by a predefined reserved value of the first sub-domain in the first part, when the second device is an 802.11ax device but does not support the device of the second standard protocol, After receiving the first part of the WUR PPDU provided by the foregoing method, the second device may not be received because the meaning of the WUR indication in the first sub-domain of the first part cannot be resolved, so that the second part of the WUR PPDU is not received. Power saving. At the same time, when the second device is a WUR device such as an 802.11ax main radio, when the main radio is in the active state, the WUR can be disabled. Only when the second device detects the WUR indication on the main radio, the WUR is notified to start and receive the subsequent The second part, thereby saving power consumption of the second device.

12. The method according to 8, the first standard protocol is 802.11ax, the physical header field comprises an RL-SIG domain and a HE-SIG-A domain, and the first part conforms to a high-efficiency extended range single-user HE ER SU PPDU format;

According to the above method, since the first standard protocol is 802.11ax, and the WUR indication is represented by a predefined reserved value of the first sub-domain in the first part, when the second device is an 802.11ax device but does not support the device of the second standard protocol, After receiving the first part of the WUR PPDU provided by the above method, the first part cannot be parsed The meaning of the WUR indication in a subfield, so that the second part of the WUR PPDU is not received, thereby making the second device more power efficient. At the same time, when the second device is a WUR device such as an 802.11ax main radio, when the main radio is in the active state, the WUR can be disabled. Only when the main radio of the second device detects the WUR indication, the WUR is notified to open and receive the subsequent The second part, thereby saving power consumption of the second device.

13. The method of any of clauses 8 to 12, wherein the first portion further comprises a receiving end identifier that receives the receiving end of the WUR PPDU.

The method of claim 13, wherein the preset condition further comprises: the receiving end identifier in the WUR PPDU is an identifier of the second device.

15. The method of any of clauses 8 to 14, the first portion further comprising an identification of a basic service set BSS to which the first device belongs.

The method of claim 15, wherein the preset condition further comprises: the identifier of the BSS to which the first device belongs is the same as the identifier of the BSS to which the second device belongs.

17. The method of any of 8 to 16, the method further comprising:

And if the second device determines, according to the WUR indication, that the second part is included in the WUR PPDU, when the second device determines that the preset condition is not met, the second part is discarded.

18. The method of any of 8 to 16, the method further comprising:

If the second device cannot understand the WUR indication, the second device gives up receiving the second portion.

Based on the same inventive concept, the embodiment of the present application provides a message processing apparatus, which can perform any one of the embodiments of the plurality of message processing methods provided by the foregoing 8-18.

In a possible design, the device includes a plurality of functional modules, for example, including a processing unit and a transceiver unit, for implementing any of the packet processing methods provided above, such that the device receives the WUR PPDU, if The WUR indication in the WUR PPDU determines that the WUR PPDU includes the second part conforming to the WUR standard, and when the second device determines that the preset condition is met, thereby opening its own WUR interface to receive the second part, and passing the WUR Parsing the second part. At other times, the WUR interface of the device can be in a dormant or off state, thereby achieving power saving.

Based on the same inventive concept, an embodiment of the present application provides a non-volatile computer storage medium storing computer-executable instructions for causing the The computer executes any of the message processing methods provided in the above 8-18.

Based on the same inventive concept, an embodiment of the present application provides a computer program product, the computer program product comprising a computing program stored on a non-transitory computer readable storage medium, the computer program comprising the computer executable instruction And when the computer executable instructions are executed by the computer, causing the computer to execute any one of the message processing methods provided in the above 8-18.

The application also provides some method embodiments and device embodiments, including:

A method of transmitting a WUR PPDU, the method comprising:

Generating a WUR PPDU, the WUR PPDU comprising a first part and a second part, the first part being located Before the second part, the first part conforms to the first standard protocol, the second part conforms to the second standard agreement, and the second standard agreement is the WUR standard;

Sending the WUR PPDU;

The first part includes a WUR indication, where the first part is followed by the second part, and the WUR indication is a predefined reserved value of the first sub-domain in the first part.

The WUR indication is included in the first part of the first standard protocol, so that the primary communication interface in the receiving device conforming to the first standard is informed according to the indication that the second part conforms to the second protocol standard, thereby opening its own WUR interface to receive the second part. . At other times, the WUR interface can be in a dormant or off state, thereby achieving power saving. At the same time, since the WUR indication is represented by the predefined reserved value of the first sub-domain in the first part, the conventional WiFi device conforming to the first standard protocol understands the first part but cannot understand the first sub-domain, which makes these The device does not receive the second part, so it saves more power.

2. The method according to 1, wherein the first standard protocol is 802.11n, the first part comprises a legacy preamble and an HT-SIG domain, and the first sub-domain is an MCS sub-domain in the HT-SIG domain. Or a reserved bit in the HT-SIG domain.

Utilizing the reserved reserved value of the HT-SIG or the predefined reserved value of the MCS sub-domain as the WUR indication, the conventional WiFi device conforming to the 802.11n and later standards can save power, and the main radio conforms to the 802.11n and later standard WUR devices. Can save power.

3. The method according to 1, the first standard protocol is 802.11ac, the first part comprises a legacy preamble and a VHT-SIG-A domain, and the first sub-domain is in the VHT-SIG-A domain The MCS subfield, or a reserved bit in the VHT-SIG-A domain.

Utilizing the reserved reserved value of the reserved bits or MCS sub-domains in the VHT-SIG-A as a WUR indication, the conventional WiFi devices complying with the 802.11ac and subsequent standards can save power and make the main radio comply with the 802.11ac and later standard WUR. The device can also save power.

4. The method according to 1, the first standard protocol is 802.11ax, the first part comprises an L-preamble, an RL-SIG and a HE-SIG-A domain, and the first part conforms to a HE SU PPDU format, The first sub-domain is an MCS sub-domain in the HE-SIG-A domain, or a reserved bit in the HE-SIG-A domain.

Utilizing the reserved reserved value in the HE-SIG-A or the predefined reserved value of the MCS sub-domain as a WUR indication, the conventional WiFi device conforming to the 802.11ax and later standards can save power, and the main radio conforms to the 802.11ax and the standard WUR. The device can also save power.

5. The method according to 1, the first standard protocol is 802.11ax, the first part comprises an L-preamble, an RL-SIG and a HE-SIG-A domain, and the first part conforms to a HE ER SU PPDU format, The first sub-domain is an MCS sub-domain in the HE-SIG-A domain, or a BW sub-domain in the HE-SIG-A domain, or an Nsts sub-domain in the HE-SIG-A domain Or a reserved bit in the HE-SIG-A domain.

Utilizing the reserved reserved value in the HE-SIG-A or the predefined reserved value of the MCS sub-domain or the BW sub-domain or the Nsts sub-domain as the WUR indication, the conventional WiFi device conforming to the 802.11ax and subsequent standards can save power and make the main radio WUR devices that comply with 802.11ax and later standards can also save power. Compared with the scheme of 4, this scheme is more suitable for long-distance communication scenarios.

6. The method of any of 1-5, the first portion further comprising a device identification of a receiving end of the WUR PPDU.

The introduction of the identifier of the receiving end device enables the device that understands the first part to judge the second part according to the identifier Not for yourself, so you don't have to receive the second part to save power.

7. The method of any of 1-6, the first part further comprising an identification of a BSS to which the transmitting end of the WUR PPDU belongs.

The introduction of the BSS identifier of the sender end enables the device that understands the first part to judge that the current PPDU is not the PPDU of the BSS according to the identifier, so the second part must not be sent to itself, so the second part may not be received. Further power saving.

8. An apparatus for transmitting a WUR PPDU, the apparatus comprising:

Generating a module for generating a WUR PPDU, the WUR PPDU comprising a first portion located before the second portion, the first portion conforming to a first standard protocol, and the second portion conforming to a second standard a protocol, the second standard protocol is a WUR standard, and the first part includes a WUR indication, where the first part is followed by the second part, and the WUR indication is a first sub-domain in the first part Predefined reserved value;

The first communication interface is configured to send the WUR PPDU.

9. The apparatus according to 8, the first standard protocol is 802.11n, the first part comprises a legacy preamble and an HT-SIG domain, and the first sub-domain is an MCS sub-domain in the HT-SIG domain Or a reserved bit in the HT-SIG domain.

10. The apparatus according to 8, the first standard protocol is 802.11ac, the first part comprises a legacy preamble and a VHT-SIG-A domain, and the first sub-domain is the VHT-SIG-A domain The MCS subfield, or a reserved bit in the VHT-SIG-A domain.

11. The apparatus according to 12, wherein the first standard protocol is 802.11ax, the first part comprises an L-preamble, an RL-SIG and a HE-SIG-A domain, and the first part conforms to a HE SU PPDU format, The first sub-domain is an MCS sub-domain in the HE-SIG-A domain, or a reserved bit in the HE-SIG-A domain.

12. The apparatus according to 8, the first standard protocol is 802.11ax, the first part comprises an L-preamble, an RL-SIG and a HE-SIG-A domain, and the first part conforms to a HE ER SU PPDU format, The first sub-domain is an MCS sub-domain in the HE-SIG-A domain, or a BW sub-domain in the HE-SIG-A domain, or An Nsts subfield in the HE-SIG-A domain, or a reserved bit in the HE-SIG-A domain.

Utilizing the reserved reserved value in the HE-SIG-A or the predefined reserved value of the MCS sub-domain or the BW sub-domain or the Nsts sub-domain as the WUR indication, the conventional WiFi device conforming to the 802.11ax and subsequent standards can save power and make the main radio WUR devices that comply with 802.11ax and later standards can also save power. Compared with the 11 scheme, this scheme is more suitable for long-distance communication scenarios.

13. The apparatus of any of 8-12, the first portion further comprising a device identification of a receiving end of the WUR PPDU.

The introduction of the identifier of the receiving end device enables the device that understands the first part to judge that the second part is not sent to itself according to the identifier, so that it is not necessary to receive the second part, thereby further saving power.

14. The apparatus of any of clauses 8-13, wherein the first portion further comprises an identification of a BSS to which the WUR PPDU sender belongs.

15. The device of any of 8-14, wherein the first communication interface is a primary communication interface.

The use of the primary communication interface to transmit the first part conforming to the first standard protocol and the second part conforming to the second standard protocol is advantageous for simplifying the device structure and thereby reducing the cost.

16. An apparatus for transmitting a WUR PPDU, the apparatus comprising:

a first communication interface, configured to send the first part of the WUR PPDU;

a second communication interface, configured to send the second part of the WUR PPDU.

17. The apparatus according to 16, wherein the first standard protocol is 802.11n, the first part comprises a legacy preamble and an HT-SIG domain, and the first sub-domain is an MCS sub-domain in the HT-SIG domain, or Reserved bits in the HT-SIG domain.

Utilizing the reserved reserved value of the HT-SIG or the predefined reserved value of the MCS sub-domain as the WUR indication, the conventional WiFi device conforming to the 802.11n and later standards can save power, and the main radio conforms to the 802.11n and later standard WUR devices. Can save electricity.

18. The apparatus according to 16, wherein the first standard protocol is 802.11ac, the first part comprises a legacy preamble and a VHT-SIG-A domain, and the first sub-domain is the VHT-SIG-A domain The MCS subfield, or a reserved bit in the VHT-SIG-A domain.

19. The apparatus according to 16, wherein the first standard protocol is 802.11ax, the first part comprises an L-preamble, an RL-SIG and a HE-SIG-A domain, and the first part conforms to a HE SU PPDU format, The first sub-domain is an MCS sub-domain in the HE-SIG-A domain, or a reserved bit in the HE-SIG-A domain.

20. The apparatus according to 16, wherein the first standard protocol is 802.11ax, the first part comprises an L-preamble, an RL-SIG and a HE-SIG-A domain, and the first part conforms to a HE ER SU PPDU format, The first sub-domain is an MCS sub-domain in the HE-SIG-A domain, or a BW sub-domain in the HE-SIG-A domain, or an Nsts sub-domain in the HE-SIG-A domain Or a reserved bit in the HE-SIG-A domain.

Utilizing the reserved reserved value in the HE-SIG-A or the predefined reserved value of the MCS sub-domain or the BW sub-domain or the Nsts sub-domain as the WUR indication, the conventional WiFi device conforming to the 802.11ax and subsequent standards can save power and make the main radio WUR devices that comply with 802.11ax and later standards can also save power. Compared with the 19 scheme, this scheme is more suitable for long-distance communication scenarios.

21. The apparatus of any of clauses 16-20, the first portion further comprising a device identification of a receiving end of the WUR PPDU.

22. The apparatus of any of clauses 16-21, wherein the first portion further comprises an identification of a BSS to which the WUR PPDU sender belongs.

23. The device of any of 16-22, wherein the first communication interface is a primary communication interface and the second communication interface is a wake-up radio frequency interface.

24. An apparatus, the apparatus comprising: a processor, a memory, a communication interface, and a bus; the processor, the communication interface, and the memory communicate with each other through the bus;

The communication interface is configured to receive and send data;

The memory is for storing instructions;

The processor is operative to execute the instructions in the memory, performing the method of any of 1-7.

25. The device of claim 24, wherein the communication interface is a first communication interface, or the communication interface comprises a first communication interface and a second communication interface.

26. The device of claim 25, wherein the first communication interface is a primary communication interface, and the second communication interface is a wake-up radio frequency interface.

DRAWINGS

1(a) to 1(b) are schematic structural diagrams of a device including an LP WUR interface in the prior art;

2(a) to 2(b) are schematic diagrams showing the structure of a WUR PPDU in the prior art;

3(a) to 3(b) are schematic diagrams of an awake window according to an embodiment of the present application;

4(a) to 4(b) are schematic diagrams showing the structure of a WUR PPDU in the prior art;

FIG. 5 is a schematic structural diagram of a WUR device according to an embodiment of the present disclosure;

FIG. 6 is a schematic diagram of a scenario applicable to an embodiment of the present application;

7 is a schematic diagram of a system of a typical WLAN deployment scenario;

FIG. 8 is a schematic flowchart of a packet processing method according to an embodiment of the present disclosure;

9(a) to 9(b) are schematic diagrams showing the structure of a WUR PPDU according to an embodiment of the present application;

10(a) to 10(b) are schematic diagrams showing the structure of a WUR PPDU according to an embodiment of the present application;

11(a) to 11(b) are schematic diagrams showing the structure of a WUR PPDU according to an embodiment of the present application;

12(a) to 12(b) are schematic diagrams showing the structure of a WUR PPDU according to an embodiment of the present application;

13(a) to 13(b) are schematic diagrams showing the structure of a WUR PPDU according to an embodiment of the present application;

FIG. 14 is a schematic structural diagram of a packet processing apparatus according to an embodiment of the present disclosure;

FIG. 15 is a schematic structural diagram of a packet processing apparatus according to an embodiment of the present disclosure;

FIG. 16 is a schematic structural diagram of a packet processing apparatus according to an embodiment of the present disclosure;

FIG. 17 is a schematic structural diagram of a packet processing apparatus according to an embodiment of the present disclosure;

FIG. 18 is a schematic structural diagram of a packet processing apparatus according to an embodiment of the present disclosure;

FIG. 19 is a schematic structural diagram of another packet processing apparatus according to an embodiment of the present disclosure.

Wherein, in the above drawings, the figures (a) and (b) of a certain figure are the same, and the contents of the figures (a) and (b) of the figure are the same, only the figures (a) and (b) are shown. Some languages use different languages (for example, somewhere in Figure (a) is used in English, and in the corresponding figure (b), Chinese is used) to facilitate understanding.

detailed description

The embodiments of the present application will be described below with reference to the accompanying drawings.

The terms used in the embodiments of the present application are for the purpose of describing particular embodiments only, and are not intended to limit the invention. The singular forms "a", "the", and "the" It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items. The character "/" in this article generally indicates that the contextual object is an "or" relationship.

It should be understood that although the terms first, second, third, etc. may be used to describe various messages, requests, and terminals in the embodiments of the present application, these messages, requests, and terminals should not be limited to these terms. These terms are only used to distinguish messages, requests, and terminals from one another. For example, the first terminal may also be referred to as a second terminal without departing from the scope of the embodiments of the present application. Similarly, the second terminal may also be referred to as a first terminal.

Depending on the context, the words "if" or "if" as used herein may be interpreted as "when" or "when" or "in response to determining" or "in response to detecting." Similarly, depending on the context, the phrase "if determined" or "if detected (conditions or events stated)" may be interpreted as "when determined" or "in response to determination" or "when detected (stated condition or event) "Time" or "in response to a test (condition or event stated)".

In the embodiment of the present application, the English abbreviations and corresponding English full names and Chinese translations used are as shown in Table 1:

Table 1

In the embodiment of the present application, the so-called WUR refers to a LP WUR interface introduced by the device based on a conventional WiFi interface (referred to as an 802.11 main radio or a main communication interface in the following description). .

As shown in FIG. 1(a) or FIG. 1(b), it is a schematic structural diagram of a device including an LP-WUR interface in the prior art. In FIG. 1(a) and FIG. 1(b), a station (Station, STA) and an access point (AP) can transmit a wake-up packet carried by a WUR PPDU in addition to a data packet (Data Packet). (Wake-up Packet, also known as wake-up frame). The 802.11 master module of the site is usually in the off mode. Only when receiving the wakeup signal from the LP WUP, the 802.11 master module is activated and then communicates with the access point (AP). The LP WUP of the station is continuously in the receiving state, or is intermittently in the receiving state. When the LP WUR receives the Wake-up Packet (also called the wake-up frame) from the AP in the receiving state, the 802.11 main module to the station is received. A wake-up signal is sent to wake up the 802.11 master module that is off. The AP side logically also includes the 802.11 main module and the WUR module. However, for the current 802.11 standard, the 802.11 main module is often an Orthogonal Frequency Division Multiplexing (OFDM) broadband transmitter, and WUR. The wake-up signal is a narrowband signal. For reasons of cost reduction and structural simplicity, an OFDM wideband transmitter can be used to generate a narrowband WUR wake-up signal. For example, a partial subcarrier of the OFDM signal is vacant and the signal is transmitted only on the narrowband corresponding to the WUR wakeup signal, thereby generating a narrowband signal, which is an example of generating a WUR narrowband signal by using an OFDM wideband transmitter, so FIG. 1(a) and FIG. The AP side of 1(b) contains only one 802.11 main module. It should be specially noted that the 802.11 main module and the WUR module can also be implemented separately in the specific implementation of the AP side. In addition, both AP and STA in FIG. 1(a) and FIG. 1(b) show one antenna, which is mainly considering that the 802.11 main module and the LP WUR module use the same frequency band carrier (for example, 2.4 GHz), and can share the same Antennas to save costs and simplify equipment structure. However, when the 802.11 main module and the LP WUR module use different frequency band carriers, the two should be configured with different antennas. For example, the 802.11 main module uses the 5 GHz band, and the LP WUR module uses the 2.4 GHz band. In this case, the two should correspond to different antennas.

Currently, STAs use LP WUR to receive signals compared to 802.11 masters to reduce power consumption. The main reason is that the wake-up packet reception and decoding is much simpler than traditional 802.11 frames. Wake-up packets usually use a modulation method that is easy to receive at the receiving end, such as OOK (on-off key) modulation. Take OOK modulation as an example, the receiving end passes Whether or not the energy judges the information carried by the received signal, for example, has an energy of 1, and no energy is zero. The traditional 802.11 frame uses OFDM, BCC/LDPC and other processing operations on the transmitting end. Accordingly, the receiving end needs to perform complex signal processing operations such as FFT and FEC decoding, which require a lot of energy.

In FIG. 1(a) or FIG. 1(b), the 802.11 main module of the STA may also be other communication interfaces, such as an LTE communication interface. For convenience of description, in the following, the modules for data communication are collectively referred to as a main communication module, that is, the 802.11 main module and the LTE communication module are collectively referred to as a main communication module; For the WUR, the RF module, the wake-up radio interface, the LP WUR, and the WUR interface are collectively referred to as WUR.

At present, the specific design of a wake-up PPDU is proposed in the manuscript [11-16-0341-00-lrlp-low-power-wake-up-receiver-follow-up], as shown in Figure 2(a) and Figure 2(b). Among them, Legacy Short Training Field (L-STF), Legacy Long Training Field (L-LTF), and Legacy Signal Field (L-SIG) are traditional leaders of traditional 802.11. The (legacy preamble) part is transmitted in OFDM mode on a bandwidth of 20 MHz (or an integer multiple of 20 MHz) for backward compatibility, so that the conventional WiFi device can determine that the current packet is a WiFi packet, thereby selecting a corresponding channel to listen for CCA. Decision threshold. L-STF, L-LTF, and L-SIG may not exist without considering backward compatibility. The WUR Payload part uses an easy-to-demodulate modulation scheme, such as OOK modulation (such as ASK), which can be transmitted over a narrower bandwidth, such as 2MHz channel, 4MHz channel, 5MHz channel, etc. (the traditional WiFi minimum bandwidth is 20MHz), making the receiving end less energy. WUR Payload includes Wake-up preamble and MAC part. The former is similar to STF, LTF and SIG in traditional WiFi, used for synchronization, AGC, channel estimation, control information indication, etc.; the latter is similar to the MAC part of traditional WiFi frame. Further, the MAC header (Header), the frame body (Frame Body), and the frame check sequence (FCS) are included, and the MAC part may perform simple channel coding by using a repetition code, a spreading code, a Manchester code, etc., to improve reliability. However, it is also possible to not use channel coding. Since the wake-up packet function is relatively simple, the frame body part may not exist. The Wake-up preamble includes a sequence of specific sequences. The WUR of the STA does not receive the previous Legacy preamble part, but directly detects the specific sequence to identify the beginning of the wake-up packet. When the WUR of the STA receives the wake-up packet and detects its own identity (unicast/multicast/broadcast address) from the MAC portion of the wake-up packet, it sends a wake-up signal to the 802.11 master module. The Wake-up preamble may also include a Wakeup-Signal (WU-SIG) field for carrying the length of the MAC part and the modulation and coding mode used. In addition to OOK, the WUR Payload section can also use other modulation methods that are easy to demodulate, such as FSK.

The above PPDU structure can be used not only for wake-up packets, but also for other frames that can be received by the WUR, such as synchronization frames for WUR synchronization. PPDUs that are received by the WUR in the above format are collectively referred to as WUR PPDUs.

It should be noted that, in the embodiment of the present application, the WUR, the LP WUR, and the WUR interface are substantially the same terms. For the sake of unification, the following is abbreviated as WUR.

If the STA's WUR is active for a long time, it will obviously consume more power. In a possible implementation manner, the WUR of the STA is intermittently activated, and the time window in which the WUR of the STA is in an active state is called a Wakeup window. The appearance of such an awake window should be regular so that the AP can know when the STA's WUR can receive the wake-up packet. For example, as shown in FIG. 3(a) or FIG. 3(b), the WUR is activated for 2 ms every 100 ms, that is, the duration of the awake window is 2 ms. When the AP has data to send to the STA, the wake-up packet can be sent in the wake-up window of the STA, thereby waking up the STA's 802.11 main module. Of course, the wake-up window may not be introduced, that is, the WUR of the STA is always in the listening state, which makes the AP wake up the STA at any time, which is beneficial to reducing the wake-up delay. The disadvantage is that the STA consumes more power.

For the WUR PPDU structure shown in Figure 2(a) or Figure 2(b), the legacy preamble has a bandwidth of 20MHz. The bandwidth of the WUR payload part is usually narrower, for example, 2MHz, 4MHz or 5MHz, so that the receiving end can save power by performing WUR detection and receiving WUR payload. Therefore, from the frequency domain occupied by the WUR PPDU, the structure of the WUR PPDU shown in FIG. 2(a) or FIG. 2(b) is as shown in FIG. 4(a) or FIG. 4(b).

In Figure 4(a) or Figure 4(b), the legacy preamble is actually the physical head of the 802.11a standard (5GHz band) and the physical head of the 802.11g standard (2.4GHz). The duration is 20μs. It is backward compatible, that is, when a conventional WiFi device receives the PPDU, it can determine that the PPDU is a WiFi PPDU according to the legacy preamble. Of course, a verification error occurs when the legacy WiFi device further resolves the legacy preamble, and finally the PPDU is discarded. . The reason why other WiFi devices are to know that the PPDU is a WiFi PPDU is because the CCA thresholds for the WiFi PPDU and the non-WiFi PPDU in the 802.11 standard are different. For example, if the device detects a WiFi PPDU, the CCA threshold is -82 dBm, that is, when the received signal strength of the PPDU is higher than -82 dBm, the device considers that the channel is busy, so the channel is no longer contending, thereby avoiding the PPDU as much as possible. The transmission causes interference; if a non-WiFi signal is detected, the CCA threshold is -62 dBm, that is, the channel is considered busy when the received signal strength of the PPDU is higher than -62 dBm. When the strength of the non-WiFi signal is between -82 dBm and -62 dBm, the device considers the channel idle, thereby contending for the channel and transmitting. Obviously, the legacy preamble is included in the WUR PPDU in order for the third-party WiFi device to consider the PPDU to be a WiFi PPDU, so that the third-party WiFi device does not contend for the channel and transmission as much as possible, thereby avoiding interference to the transmission of the WUR payload portion.

For a third-party WiFi device, such as a conventional WiFi device or a WUR device with a WUR off and a main radio enabled (in the embodiment of the present application, the WUR device refers to a device that is equipped with both the main communication module and the WUR), when receiving the PPDU, The PPDU is considered to be an 802.11a PPDU, so that the WUR payload portion is resolved according to the structure of the 802.11a PPDU, although it is eventually discarded due to the verification failure, but this obviously causes additional power consumption of the third-party WiFi device.

For the target WUR device (in the embodiment of the present application, the target WUR device is a WUR device that needs to receive the wake-up packet), if the main radio is just turned on for other reasons, the main radio also considers the PPDU to be an 802.11a PPDU, and further According to the structure of the 802.11a PPDU, the WUR payload part is solved, and finally the PPDU is discarded due to the verification failure, which causes the wakeup end to wake up the WUR device. Therefore, in order to ensure that a WUR device can be woken up, when its main radio is active, the WUR must also be active at the same time. As shown in Figure 5, when the WUR device receives a signal, the main radio and WUR interfaces always perform detection at the same time to determine whether the signal is a PPDU type that it can receive. Obviously, this will cause power consumption of the WUR equipment. A possible scenario in which the above situation occurs is shown in FIG. 6. The mobile phone STA4 and the wearable devices STA1, STA2, and STA3 are all configured with WUR. At a certain moment, the mobile phone STA4 is woken up by the wristband STA3, but the AP does not know about this, so when the AP When there is downlink data of the mobile phone STA4, the wake-up frame is also sent to the mobile phone STA4. If the WUR of the mobile phone STA4 is turned off at this time, the wake-up frame cannot be understood. From the perspective of the AP, it is found that the mobile phone STA4 cannot wake up, and it is possible to perform operations such as paging to determine whether the mobile phone STA4 is still within its own coverage, which obviously increases unnecessary unnecessary overhead.

In summary, the WUR PPDU structure shown in FIG. 2(a) or FIG. 2(b) is not conducive to power saving of the third-party WiFi device and the target WUR device that receive the WUR PPDU. In this embodiment of the present application, the WUR PPDU structure is redesigned so that the traditional WiFi device does not need to solve the WUR payload portion when receiving the WUR PPDU, thereby reducing the power consumption of the traditional WiFi device. Meanwhile, when the WUR device is in the main radio When the WUR frame is received, it can be determined that the subsequent part is the WUR payload, so the WUR can be turned off after the main radio is turned on, thereby saving power.

The embodiment of the present application can be applied to a Wireless Local Area Network (WLAN). Currently, the standard adopted by the WLAN is the IEEE 802.11 series. A WLAN may include one or more basic service sets, and network nodes in a basic service set include an AP and an STA. Each basic service set can contain one AP and multiple associated with the AP STA.

APs, also known as access points or hotspots. The AP is an access point for mobile users to enter the wired network. It is mainly deployed in the home, inside the building, and inside the campus. The typical coverage radius is tens of meters to hundreds of meters. Of course, it can also be deployed outdoors. An AP is equivalent to a bridge connecting a wired network and a wireless network. Its main function is to connect the wireless network clients together and then connect the wireless network to the Ethernet. Specifically, the AP may be a terminal device or a network device with a WiFi chip. Optionally, the AP may support the 802.11ax protocol. Further optionally, the AP may be a device supporting multiple WLAN protocols such as 802.11ac, 802.11n, 802.11g, 802.11b, and 802.11a. In general, devices that support a certain protocol are also compatible with legacy protocols that operate in the same frequency band. For example, 802.11n devices operating in the 2.4 GHz band are generally compatible with 802.11b and 802.11g, and 802.11n devices operating in the 5 GHz band are generally compatible with 802.11a. The device is "compatible" with a protocol in which the device supports the protocol.

The STA may be a wireless communication chip, a wireless sensor, or a wireless communication terminal. For example: mobile phone supporting WiFi communication function, tablet computer supporting WiFi communication function, set-top box supporting WiFi communication function, smart TV supporting WiFi communication function, smart wearable device supporting WiFi communication function, and vehicle communication supporting WiFi communication function Devices and computers that support WiFi communication. Optionally, the site can support the 802.11ax protocol. Further optionally, the site supports multiple WLAN protocols such as 802.11ac, 802.11n, 802.11g, 802.11b, and 802.11a.

Figure 7 is a system diagram of a typical WLAN deployment scenario. In FIG. 7, BSS1 and BSS2 coexist, wherein BSS1 includes AP1 and STA1 to STA5 associated with AP1; BSS2 includes AP2 and STA6 to STA9 associated with AP2. The AP1 may send a WUR PPDU to any one of the STAs that are configured with the WUR in the STA associated with the AP1. Due to the broadcast characteristics of the wireless channel, the WUR PPDU is also received by devices other than the target STA associated with AP1 and devices in the neighboring BSS, such as devices in BSS2. There may be WUR devices with WUR in these devices, or there may be legacy WiFi devices with unconfigured WUR. For traditional WiFi devices, it is obviously unnecessary to receive and parse WUR PPDUs, which will result in additional reception power consumption. For a WUR device that has enabled the main radio, if the PPDU is determined to be a WUR PPDU according to the 20 MHz physical header received by the main radio, and then the WUR interface is enabled to receive the subsequent part, the power can be further saved. Further, if the main radio WUR device is enabled to determine that the current WUR PPDU is not sent to itself according to the 20 MHz physical header received by the main radio, the subsequent part is not resolved, and further power saving can be performed.

As shown in FIG. 8 , a schematic flowchart of a packet processing method according to an embodiment of the present application is shown.

In the process of FIG. 8, the first device may refer to a device such as an AP or an STA, and the second device may refer to a device such as an AP or an STA.

Referring to Figure 8, the method includes:

Step 801: The first device generates a WUR PPDU, where the WUR PPDU includes a first part that is located before the second part, the first part conforms to the first standard protocol, and the second part conforms to the second part A standard protocol, the second standard protocol being a WUR standard; the first part comprising a legacy preamble and a physical header field.

The physical header field includes a WUR indication, where the WUR indication is used to indicate that the second part is included after the first part in the WUR PPDU, and the WUR indication is the first in the physical header field. The predefined reserved value of the subdomain.

Step 802: The first device sends the WUR PPDU.

Step 803: The second device receives the WUR PPDU sent by the first device, where the WUR PPDU includes a first part and a second part, where the first part is located before the second part, and the first part conforms to the first standard protocol, where the The second part conforms to the second standard protocol, and the second standard protocol is the WUR standard; the first part includes the traditional Lead and physical header fields.

Step 804: If the second device determines, according to the WUR indication, that the second part is included in the WUR PPDU, when the second device meets a preset condition, the second part is received and parsed by the WUR. The preset condition includes: the second device includes a WUR.

Correspondingly, if the second device determines, according to the WUR indication, that the second part is included in the WUR PPDU, when the second device determines that the preset condition is not met, the second device is absent from receiving the second part. section. For example, if the second device is a legacy WiFi device that supports the first standard protocol but does not support the second standard protocol, the second device determines that the value of the first sub-domain in the physical header field is a reserved value (ie, the second device cannot When the meaning of the first sub-domain is understood, it is determined that the remaining part of the PPDU cannot be parsed by itself, so that the reception of the remaining part of the PPDU can be abandoned, thereby achieving the purpose of power saving.

In step 801 to step 804, the first part of the WUR PPDU may also be referred to as a Physical Layer Header (PHY Header) part, and the second part of the WUR PPDU may also be referred to as a WUR payload, that is, the WUR PPDU may be a PHY Header and a WUP. The payload constitutes. Specifically, it is as shown in FIG. 9(a) or FIG. 9(b).

In FIG. 9(a) or FIG. 9(b), the PHY Header portion may include a legacy preamble and an HT/VHT/HE Header, and a WUR indication is included in the HT/VHT/HE Header for indicating HT/VHT/ The HE Header is followed by the WUP payload.

Among them, HT Header is the physical header field of 802.11n, which can be correctly parsed by 802.11n and later standard devices, such as 802.11n/ac/ax devices; VHT Header is the physical header field of 11ac, which can be supported by 11ac and later standards. The device is correctly parsed, such as 802.11ac/ax devices; HE Header is the physical header field of 802.11ax, which can be correctly parsed by 11ax and later standard devices, such as 802.11ax devices. For details of the WUR payload, reference may be made to FIG. 2(a) or FIG. 2(b), and FIG. 2(a) or FIG. 2(b) for related description, and details are not described herein again.

In the embodiment of the present application, the PHY Header part can occupy a bandwidth of 20 MHz, and the WUR payload can occupy a bandwidth of 2 MHz, 4 MHz, 5 MHz, and the like.

In the embodiment of the present application, the WUR indication should have at least one of the following two functions:

1) The legacy WiFi device should be able to determine from the WUR indication that the WUR PPDU including the WUR indication is not addressed to itself, or that the portion of the WUR PPDU that is located after the HT/VHT/HE Header is not self-resolvable. This makes the traditional WiFi device no longer need to solve the part after the HT/VHT/HE Header, but can obtain the length of the part after the HT/VHT/HE Header according to the legacy preamble part. During this time, the traditional WiFi device can enter the sleep state. State, thus achieving the purpose of power saving.

2) The main radio of the WUR device can determine that the HT/VHT/HE Header includes the WUR payload according to the WUR indication, thereby notifying the WUR interface to receive the subsequent WUR payload portion. This allows the WUR device to have no need to detect signals (eg, turn off the WUR or enter the Doze state) after the main radio is turned on, thereby making the WUR device more power efficient. The Doze state is also called a sleep state or a standby state, which refers to a state in which the device does not turn off the receiving circuit but does not detect and receive a signal; the off state refers to a state in which the device turns off the receiving circuit.

It should be specially noted that the traditional WiFi device determines which of the HT/VHT/HE PPDUs is received, which is based on several OFDM symbols immediately following the Legacy preamble (the average duration of each symbol is 4 μs) And the LENGTH field value of the L-SIG domain in the Legacy preamble is determined. For example, if LENGTH mod3=0 and the first symbol phase after the Legacy preamble is rotated by 90 degrees (ie, using QBPSK modulation), then the PPDU is determined to be an HT PPDU; if LENGTH mod3=0 and the first symbol after the Legacy preamble does not occur Phase rotation (ie BPSK modulation), but the second symbol phase is rotated by 90 degrees (ie using QBPSK modulation), Then, the PPDU is determined to be a VHT PPDU; if LENGTH mod3=1 or 2, the PPDU is determined to be an HE PPDU. For HE PPDU, if LENGTH mod3=1 and Format=1 in HE-SIG-A, it is determined that the PPDU is HE SU PPDU; if LENGTH mod3=2 and HE-SIG-A second symbol (ie after Legacy preamble) The third symbol) phase is rotated by 90 degrees (that is, QBPSK modulation is used), and then the PPDU is determined to be HE ER SU PPDU, where mod is a remainder operation. In all the embodiments of the present application, the setting and method of determining the PPDU type are not changed, that is, the device can still determine the PPDU type of the PHY Header part of the WUR PPDU according to the above rules. The newly added indication in the embodiment of the present application, such as the WUR indication, is carried by the sub-domain included in the HT/VHT/HE Header.

The key to the embodiments of the present application is the WUR indication. The basic idea of carrying the WUR indication in the HT/VHT/HE Header is to use the predefined reserved value of the first subfield in the HT/VHT/HE Header as the WUR indication. For example, the first subfield may be HT/VHT/ Reserved bits in the HE Header, or HT/VHT/HE Header, have reserved subfields with unused values. The so-called WUR indication of the predefined reserved value of the first sub-domain means that a specific one is selected from the remaining reserved values of the first sub-domain as the WUR indication. For example, the first sub-domain is an MCS sub-domain with a total of 4 bits, and the range of values is 0 to 15. The standard currently uses 0 to 10, and the reserved value of the sub-domain is 11 to 15, from these reserved values. Select a specific one, such as MCS=15, defined as the WUR indication. The WUR PPDUs in steps 801 to 804 can be implemented in various manners according to the specific types of PHY Headers of the WUR PPDUs. For convenience of description, the following describes them in detail.

The first possible implementation manner is: the first standard protocol is 802.11ax, the physical header field includes the RL-SIG domain and the HE-SIG-A domain, and the first part conforms to the HE SU PPDU format; the first sub-domain is the HE-SIG - an MCS subfield in the A domain, or the first subdomain is a reserved bit in the HE-SIG-A domain.

In this implementation manner, the physical header in the WUR PPDU may be an HE SU PPDU Header, that is, the Legacy preamble is followed by the RL-SIG domain (length is 1 OFDM symbol) and the HE-SIG-A domain (length) It is 2 OFDM symbols). Specifically, as shown in FIG. 10( a ) or FIG. 10( b ), a schematic diagram of a WUR PPDU structure provided by an embodiment of the present application. The WUR PPDU in FIG. 10(a) or FIG. 10(b) includes a first part and a second part in sequence, wherein the first part includes a legacy preamble, an RL-SIG field (RL-SIG is a time domain repetition of the L-SIG in the Legacy preamble) ), HE-SIG-A domain; the second part includes WUR load. When the WUR PPDU shown in Figure 10(a) or Figure 10(b) is transmitted, the duration of the traditional preamble is generally 20μs, the duration of the RL-SIG domain is generally 4μs, and the duration of the HE-SIG-A domain is generally It is 8μs.

The contents of the HE-SIG-A field of the HE SU PPDU are as shown in FIG. 10(a) or FIG. 10(b). For the HE-SIG-A domain, it sequentially transmits the following sub-domains on the occupied symbol 1: Format; Beam Change; Uplink/Downlink (UL/DL); Modulation and Coding (MCS); Dual carrier modulation (DCM); Basic Service Set Color (BSS Color); Reserved (Reserved); Spatial Reuse; Bandwidth; Guard Interval (GI) and LTF Size (size) The sum of the number of space-time streams (Nsts); it transmits the following sub-domains on the occupied symbol 2: Transmission Opportunity (TXOP); Duration (Duration); Coding ( Coding); Low Density Parity Check Code (LDPC) Extra Symbol; Space-Time Block Coding (STBC); Transmit Beamforming (TxBF); Pre-Forward Error Correction (Pre-FEC) pre-fill factor (Padding factor); Packet Extension (PE) Disambiguation (Disambiguity); Doppler; Cyclic Redundancy Check ( Cyclic Redundancy Ch Eck, CRC); Tail.

In this implementation, the MCS sub-domain in the HE-SIG-A can be used to carry the WUR indication, that is, the first sub-domain is MCS subdomain. The value of the MCS subfield defined in 802.11ax ranges from 0 to 11, and 12 to 15 are reserved. Therefore, any value from 12 to 15 can be used as the WUR indication. For example, when the value of the MCS sub-domain is 15 as the WUR indication, a device supporting 802.11ax but not supporting the WUR standard protocol receives a HE SU PPDU physical header including the MCS sub-domain 15. The MCS sub-domain has the meaning indicated by 15, so it is considered that the subsequent part is unresolvable, so the subsequent part of the PPDU will no longer be received and parsed, thereby achieving the purpose of power saving; when a WUR device supporting 802.11ax receives the main radio through the main radio When the HE SU PPDU physical header is determined, if the MCS sub-domain is determined to be 15, it is determined that the subsequent part of the PPDU includes the WUR payload, so that the WUR is notified to detect and receive the WUR payload, and the main radio no longer receives and parses the subsequent part. . Before the main radio detects the WUR indication, the WUR can perform no signal detection (for example, in the Doze state), thereby saving power.

Optionally, in addition to the MCS sub-domain, the reserved bit in the HE-SIG-A may be used as the WUR indication, that is, the first sub-domain is a reserved bit. For example, 802.11ax specifies that the reserved bit has a value of 1, so when the reserved bit has a value of 0, it can be used to indicate that the subsequent part of the current WUR PPDU is a WUR PPDU. The beneficial effects are similar to the MCS domain bearer WUR indication, and therefore will not be described again.

In summary, in conjunction with the foregoing description, when the first device carries a WUR indication through a reserved bit in the MCS sub-domain or the HE-SIG-A domain in the HE-SIG-A domain, the second device determines according to the WUR indication. The second part (ie, the WUR payload) is included in the WUR PPDU, and the second part may be parsed by the WUR when the second device determines that the preset condition is met. The preset condition includes: the second device includes a WUR.

Correspondingly, when determining that the preset condition is not met, the second device may abandon receiving the second part, thereby achieving power saving purposes.

Optionally, in combination with FIG. 10( a ) or FIG. 10 ( b ), the identifier of the BSS to which the first device belongs may also be included in the first part. Specifically, the BSS Color subfield is also included in the HE-SIG-A. The BSS Color is 6 bits long and can be used to indicate the identity of the BSS to which the device that sends the WUR PPDU belongs. The BSS is a network composed of APs and their associated STAs, so the BSS Color is also a network identifier. The BSS Color helps the receiving device to further save power: the receiving device (whether the 802.11ax device or the main radio adopts the 802.11ax WUR device) receives the WUR PPDU, and if the WUR PPDU is determined in the HE-SIG-A of the HE SU PPDU When the BSS Color value does not match the BSS Color of the network to which the network belongs, the HE SU PPDU is considered to be a PPDU in the other BSS, so that the subsequent part is no longer received, so that it is not necessary to parse the subsequent part, thereby saving power. In this embodiment, the BSS Color subfield may also carry other information indicating the network identity, such as a partial bit of the BSSID (eg, a few bits of the BSSID).

After the MCS is used as the WUR indication in the embodiment of the present application, for example, the MCS is set to 15, and other sub-domains in the HE-SIG-A may be redefined for carrying other information. For example, in the embodiment of the present application, the first part of the WUR PPDU sent by the first device may further include a receiving end identifier of the receiving end of the WUR PPDU. Specifically, a part of the sub-domain of the HE-SIG-A may be re-defined to carry the receiving end identifier of the receiving end of the WUR PPDU, so that the main radio adopts the 802.11ax WUR device to save power. For example, bits 7 to 15 of the second symbol of HE-SIG-A may be redefined to carry the receiver identification as shown in FIG. 10(a) or FIG. 10(b). The receiving end identifier may be an AID of the receiving device, or a PAID, or a WUR ID, or a short identifier generated based on the MAC address of the receiving device (eg, a few bits of the MAC address, or a hash value of the MAC address), or any other identifier that can be used for identification. Receive information about the identity of the device. When the main radio adopts the 802.11ax WUR device to receive the HE SU PPDU physical header of the MCS=15 through the main radio, if the received end identifier does not match its own identifier, the WUR PPDU is not sent to itself. , so main radio and WUR The interface does not need to parse the subsequent part of the WUR PPDU, thereby saving power. In the scheme shown in FIG. 5, the main radio and the WUR interface detect and decode the received signals during the entire WUR PPDU reception period, and the two interfaces have decoding power consumption throughout the WUR PPDU duration. Obviously, the solution of the embodiment of the present application makes the target WUR device more power-saving, and can prevent third-party devices (non-target WUR devices and traditional WiFi devices supporting 802.11ax but not supporting WUR) from parsing the entire WUR PPDU, thereby enabling third-party devices. Save power consumption.

It should be noted that the WUR payload of the WUR PPDU may be used to carry a group address frame, that is, the WUR PPDU is sent to multiple devices. At this time, the receiving end identifier in the HE-SIG-A should not be the identifier of a certain device, but should be the group address identifier. For example, according to existing standards, PAID = 0 indicates a group address. Of course, we can also define other specific values as the group address identifier. For example, the definition of the receiver identifier sub-domain when all bits are 1 indicates the group address.

In summary, in the prior art, an 802.11ax device decodes the entire WUR PPDU as an 802.11a PPDU, and the receiving power consumption is high. In the embodiment of the present application, the device supporting the 802.11ax but not supporting the WUR standard can determine that the subsequent part of the WUR PPDU cannot be resolved by itself according to the WUR indication in the HE-SIG-A, and therefore does not parse the subsequent part of the WUR PPDU. Therefore, the solution of the embodiment of the present application makes the 802.11ax device more power efficient.

In the prior art, when the main radio of the WUR device supporting the 802.11ax is in an active state and the WUR is in the off state, when the WUR PPDU shown in FIG. 2(a) or FIG. 2(b) is received, it is regarded as The 802.11ax PPDU is decoded. The decoding operation of the main radio is obviously power consuming. When the receiving device of the WUR PPDU happens to be itself, the main radio of the device cannot parse the WUR PPDU. To ensure that the WUR device can always be parsed and sent to the WUR PPDU, the WUR can only be kept in the receive detection state after the main radio is turned on. That is, the two interfaces always detect and decode each received signal, which is obviously more power-consuming. . In the embodiment of the present application, when the main radio of the WUR device of the 802.11ax main radio is activated, the WUR can be disabled, and only when the main radio detects the WUR indication from the HE-SIG-A, the WUR is notified to open and receive the subsequent part. . The introduction of the BSS Color and the receiving end identifier makes it unnecessary to parse the WUR payload part of the main radio and the WUR of the non-target WUR device of the current WUR PPDU, thereby saving power.

A second possible implementation manner is: the first standard protocol is 802.11ax, the physical header field includes an RL-SIG domain and an HE-SIG-A domain, and the first part is a HE SU PPDU format; the first subdomain Is the MCS subfield in the HE-SIG-A domain, or the first subfield is a reserved bit in the HE-SIG-A domain.

In the embodiment of the present application, the WUR device may be used in a long-distance communication scenario, such as a sensor network (such as a forest fire monitoring network, an urban climate monitoring network, etc.). In this case, it may be more appropriate to use the HE ER SU PPDU Header in the PHY Header portion of the WUR PPDU.

The WUR PPDU using the HE ER SU PPDU Header as the PHY Header can be as shown in FIG. 11(a) or FIG. 11(b). The RL-SIG domain is the same as the first possible implementation. The HE-SIG-A domain is the first possible implementation of the time domain replication of the HE-SIG-A domain, so the length is four OFDM symbols. In the first possible implementation, the length of the HE-SIG-A domain is two symbols). If the symbol included in HE-SIG-A is symbol 1 and symbol 2 (sorted in chronological order) in the first possible implementation, the symbols included in HE-SIG-A in the second possible implementation are in chronological order. Sorted into symbol 1, symbol 1, symbol 2, symbol 2. Although the HE-SIG-A in the second possible implementation differs from the length of the HE-SIG-A in the first possible implementation, the content carried is the same. For details of the specific bearer, refer to the previous description, and details are not described herein again.

In this implementation, the first sub-domain for carrying the WUR indication may be the following sub-domain in the HE-SIG-A domain:

1) BW sub-domain: In the HE ER SU PPDU format of 802.11ax, only the BW sub-domain can be 0 or 1, and the BW sub-domain is 2 or 3, which is a reserved value. Therefore, you can use the BW subfield as any of 2 or 3 as the value. WUR instructions. For example, when the BW subfield is 3, it indicates that the HE-SIG-A is followed by the WUR payload; or when the BW subfield is 2, it indicates that the HE-SIG-A is followed by the WUR payload.

2) MCS sub-domain: For the HE ER SU PPDU format, 802.11ax specifies that when the BW sub-domain is 0, the MCS sub-domain can take any value from 0 to 2; when the BW sub-domain is 1, the MCS sub-domain Can take 0. Therefore, the WUR indication may be that the BW subfield is 0 and the MCS subfield is any one of 3 to 15, for example, the BW subfield is 0 and the MCS subfield is 15; or the WUR indication may be the BW subdomain being 1 And the MCS subfield is any one of 1 to 15, for example, the BW subfield is 1 and the MCS subfield is 15.

3) Nsts subfield: In the HE ER SU PPDU format of 802.11ax, only the Nsts subfield is defined as 0 or 1, and the Nsts subfield is any value from 2 to 7, which is a reserved value. Therefore, any value of 2 to 7 can be used as the WUR indication with the Nsts subfield. For example, when the Nsts subfield is 7, it means that the HE-SIG-A is followed by the WUR payload.

4) Reserved bits in HE-SIG-A: For example, 802.11ax specifies that the reserved bit has a value of 1, so when the reserved bit has a value of 0, it can be used to indicate that the subsequent part of the current WUR PPDU is a WUR PPDU. .

In summary, in conjunction with the foregoing description, when the first device passes the MCS sub-domain in the HE-SIG-A domain or the BW sub-domain in the HE-SIG-A domain or the Nsts sub-domain or HE in the HE-SIG-A domain When the reserved bit in the SIG-A domain carries the WUR indication, if the second device determines, according to the WUR indication, that the WUR PPDU includes the WUR payload, the second device can receive the WUR when the preset condition is met. And parsing the second part. The preset condition includes: the second device includes a WUR.

Correspondingly, when the second device does not meet the preset condition, the second device may be abandoned to receive the power saving purpose.

Optionally, in this implementation manner, the first device may further modify the BSS Color in the HE-SIG-A and redefine the partial sub-domain (such as the 7th to 15th bits in the symbol 2) to carry the identifier of the receiving end, Further reduce the power consumption of the receiving device.

Optionally, the identifier of the BSS to which the first device belongs may also be included in the first part. Specifically, the first device may indicate, by using a BSS Color subfield in the HE-SIG-A, an identifier of the BSS to which the device that sends the WUR PPDU belongs. For details, refer to the description in the first possible implementation manner, and details are not described herein again.

Optionally, the first part of the WUR PPDU sent by the first device may further include a receiving end identifier of the receiving end of the WUR PPDU. For details, refer to the description in the first possible implementation manner, and details are not described herein again.

A third possible implementation manner is: the first standard protocol is 802.11ac, the physical header field includes a VHT-SIG-A domain, and the first sub-domain is an MCS sub-domain in the VHT-SIG-A domain, Or the first subfield is a reserved bit in the VHT-SIG-A domain.

Specifically, as shown in FIG. 12( a ) to FIG. 12( b ), the PHY Header in the WUR PPDU may be a VHT PPDU Header, that is, a physical header of the 802.11ac, including a Legacy preamble and a VHT-SIG-A domain. The Legacy preamble is followed by the VHT-SIG-A domain, where the VHT-SIG-A domain occupies 2 symbols, the symbol 1 includes bits B0 to B23, and the symbol 2 includes bits B0 to B23.

The sub-domains that the VHT-SIG-A domain transmits in the occupied symbol 1 may include: BW; Space time block coding (STBC); Group Identifier (Group ID); Nsts; PAID; User (Multiple User, MU); does not allow power saving in the current TXOP (TXOP_PS_NOT_ALLOWED), where PS is called Power Saving.

The sub-domains in which the VHT-SIG-A domain is transmitted in the occupied symbol 2 may include: Short GI (Short GI); Short GI Number of Symbols (NSYM) Disambiguation (Short GI NSYM Disambiguation); User/Multi User Coding (SU/MU Coding); LDPC Extra OFDM Symbol; Single High Throughput (VHT) Modulation and Coding (SU VHT-MCS); Multi-User Coding ( MU Coding); beamforming (Beamformed); CRC; tail bit.

For the specific meaning of the foregoing sub-domains, refer to the description in 802.11ac, and details are not described herein again.

In the embodiment of the present application, the SU VHT-MCS (hereinafter abbreviated as MCS) sub-field of B4 to B7 of the symbol 2 in the VHE-SIG-A may be used to carry the WUR indication, that is, the first sub-domain is an MCS sub-domain. The value of the MCS subfield defined in 802.11ac ranges from 0 to 9, and 10 to 15 are reserved values of the MCS subfield. Therefore, any value of 10 to 15 can be used as the WUR indication in the MCS subfield. For example, when the MCS subfield is 15, the WUR PPDU is included in the WUR PPDU.

It should be noted that B4 to B7 of symbol 2 have different meanings in the SU and MU scenarios, and are used to carry the MCS sub-domain only in the SU scenario. Therefore, when the WUR indication is carried by the MCS sub-domain, the Group ID sub-domain in the VHT-SIG-A should be set to SU, that is, the Group ID value should be 0 (SU UL) or 63 (SU DL).

In this implementation manner, the reserved bit in the VHT-SIG-A can also be used as the WUR indication, that is, the first sub-domain is a reserved bit. 802.11ac specifies that the reserved bit in VHT-SIG-A is set to 1, so when the reserved bit has a value of 0, it can be used to indicate that the subsequent part of the current WUR PPDU is a WUR PPDU. It should be specially noted that, since the physical header of the VHT PPDU is used as the PHY Header part of the WUR PPDU in this implementation, the device that can benefit from the device except the 802.11ax device in the first embodiment and the WUR device in the main radio using the 802.11ax It also includes 802.11ac devices and main radios using 802.11ac WUR devices, thus benefiting a wider range of devices.

In summary, in conjunction with the foregoing description, when the first device carries a WUR indication through a reserved bit in the MCS sub-domain or the VHT-SIG-A domain in the VHT-SIG-A domain, the second device determines according to the WUR indication. The WUR payload is included in the WUR PPDU, and the second part may be parsed by the WUR when the second device determines that the preset condition is met. The preset condition includes: the second device includes a WUR. Correspondingly, when determining that the preset condition is not met, the second device gives up receiving the second part, thereby achieving power saving purposes.

Optionally, in addition to the MCS subfield and the reserved bits, the PAID subfield may be used as the WUR indication. For example, the PAID subdomain carries the PAID of the target WUR device, which allows third-party 802.11ax and 802.11ac devices to save power.

Optionally, the identifier of the BSS to which the first device belongs may also be included in the first part. Specifically, in the case that the WUR indication is introduced, the other sub-domains may be re-defined to carry the network identifier, such as the identifier of the BSS (BSS Color or BSSID lower bits) to which the first device belongs. For example, the last two bits of the symbol 1 occupied by the VHT-SIG-A and the first four bits of the symbol 2 can be redefined to carry the identity of the BSS to which the first device belongs.

Optionally, the first part of the WUR PPDU sent by the first device may further include a receiving end identifier of the receiving end of the WUR PPDU. Specifically, in the case that the Group ID is set to 0 or 63, the receiver identifier, such as the receiver PAID, may be carried by B13 to B21 in the symbol 1 occupied by the VHT-SIG-A. The receiving end identifier may also be in other forms. For example, the PAID may be replaced with other information for indicating the identifier of the current WUR PPDU receiving end, such as an AID. For details, refer to the foregoing description, and details are not described herein again. Optionally, when the PAID is 0, the group address identifier may also be used. For details, refer to the foregoing description, and details are not described herein again.

Compared with the prior art, this implementation not only makes the 802.11ax device and the main radio adopt the 802.11ax WUR device more power-saving, but also makes the 802.11ac device and the main radio adopt the 802.11ac WUR device to save more power, so it benefits. A wider range of equipment.

The fourth possible implementation manner: the first standard protocol is 802.11n, the physical header field includes the HT-SIG domain, and the first sub- The domain is an MCS subfield in the HT-SIG domain, or the first subdomain is a reserved bit in the HT-SIG domain.

Specifically, as shown in FIG. 13( a ) to FIG. 13( b ), the PHY Header in the WUR PPDU may be an HT PPDU Header, that is, a physical header of the 802.11n, and the Legacy preamble is followed by the HT-SIG, where the HT-SIG Take up 2 symbols.

The content contained in the HT-SIG can be as follows: MCS sub-domain; Channel Bandwidth (CBD); High Throughput (HT) Length; Smoothing; Not Sounding ; reserved bits; Aggregation; STBC; FEC encoding (Coding); short GI; Number of Extension Spatial; Stream (Strame); CRC; Tail Bits. Among them, the LSB in FIG. 13(a) is the least significant bit, and the MSB is the most significant bit.

In this implementation manner, the MCS sub-domain in the HT-SIG can be used to carry the WUR indication, that is, the first field is an MCS sub-domain. The value of the MCS subfield defined in 802.11n ranges from 0 to 76, and 77 to 127 belong to the reserved value of the MCS subfield. Therefore, any value of 77 to 127 can be used as the WUR indication by the MCS subfield.

Optionally, the reserved bit in the HT-SIG can also be used as the WUR indication, that is, the first sub-domain is a reserved bit. For details, refer to the foregoing description, and details are not described herein again.

Optionally, the first part may further include an identifier of the BSS to which the first device belongs and a receiving end identifier of the receiving end of the WUR PPDU. In the case of introducing the WUR indication, a part of the sub-domain may be re-defined to carry other information, such as an identifier of the bearer receiving the identifier and the identifier of the BSS to which the first device belongs. For example, some or all of the 8th to 23rd bits in the HT-SIG symbol 1 are redefined to carry the receiving end identifier, and the receiving end identifier may be an AID, a PAID, a receiving MAC address partial bit, or the like. For example, some or all of the first 10 bits in the symbol 2 are redefined to carry the identifier of the BSS to which the first device belongs, such as a BSS Color or a BSSID lower by a number of bits.

Compared with the prior art, in the fourth possible implementation manner, since the HT PPDU physical header is used as the PHY Header part of the WUR PPDU, devices that can benefit from it, including the 802.11ax device and the main radio 802.11ax WUR device The 802.11ac device and the main radio use the 802.11ac WUR device, and the 802.11n device and the main radio adopt the 802.11n WUR device, so the range of the device is more broad.

In conjunction with the foregoing description, when the first device carries a WUR indication through a reserved bit in the MCS sub-domain or the HT-SIG domain in the HT-SIG domain, the second device determines, according to the WUR indication, that the WUR PPDU includes the WUR. The payload may be parsed by the WUR when the second device determines that the preset condition is met. The preset condition includes: the second device includes a WUR. Correspondingly, when determining that the preset condition is not met, the second device may abandon receiving the second part, thereby achieving power saving purposes.

Optionally, in combination with any one of the first possible implementation manners and the fourth possible implementation manner, the preset condition may further include: an identifier of the BSS to which the first device belongs and the second The BSS of the device belongs to the same identifier. After the second device includes the WUR, the second device further needs to further determine the identifier of the BSS to which the first device included in the WUR PPDU sent by the first device belongs, and the second Whether the identifiers of the BSSs to which the device belongs are the same. If they are the same, the second part of the WUR PPDUs is parsed by the WUR; if not, the second device abandons receiving the second part.

In the embodiment of the present application, the identifier of the BSS may be a BSS Color or a BSSID lower than a bit.

Optionally, in combination with any one of the first possible implementation manners and the fourth possible implementation manner, the preset condition may further include: the receiving end identifier in the WUR PPDU is the foregoing The identification of the two devices. After the second device receives the WUR PPDU, the second device further needs to determine whether the receiving end identifier in the WUR PPDU sent by the first device is the identifier of the second device, while the second device includes the WUR. If Yes, the second part of the WUR PPDU is parsed by WUR; otherwise, the second device does not receive the second part.

In this embodiment, the identifier of the receiving end may be an AID, a PAID, a WUR ID, a short identifier generated based on a MAC address of the receiving device, a bit of a MAC address of the receiving end, a hash value of the MAC address of the receiving end, and the like, and may be used for identifying the receiving. Device identity information.

Based on the same technical concept, the embodiment of the present application further provides a message processing apparatus, which can execute the method flow executed by the first device in each method embodiment related to FIG. 8. As shown in FIG. 14, the embodiment of the present application provides a schematic structural diagram of a message processing apparatus.

Referring to Figure 14, the apparatus 1400 includes:

The processing unit 1401 is configured to generate a wake-up radio frequency protocol data unit WUR PPDU, where the WUR PPDU includes a first part and a second part, where the first part is located before the second part, and the first part conforms to the first standard protocol, where the The second part conforms to the second standard protocol, and the second standard protocol is the WUR standard; the first part comprises a traditional preamble and a physical header field;

The transceiver unit 1402 is configured to send the WUR PPDU.

Optionally, the first standard protocol is 802.11n, and the physical header field includes a high-throughput signaling HT-SIG domain;

Optionally, the first standard protocol is 802.11ac, and the physical header field includes a very high throughput signaling-A VHT-SIG-A domain;

Optionally, the first standard protocol is 802.11ax, and the physical header field includes a repetition of a traditional preamble signaling RL-SIG domain and an efficient signaling-A HE-SIG-A domain, where the first part conforms to an efficient single user. HE SU PPDU format;

Optionally, the first standard protocol is 802.11ax, and the physical header field includes an RL-SIG domain and an HE-SIG-A domain, where the first part conforms to a high-efficiency extended range single-user HE ER SU PPDU format;

Optionally, the first part further includes a receiving end identifier that receives the receiving end of the WUR PPDU.

Optionally, the first part further includes an identifier of a basic service set BSS to which the device belongs.

Based on the same technical concept, the embodiment of the present application further provides a message processing apparatus, which can execute the method flow executed by the second device in each method embodiment related to FIG. 8. As shown in FIG. 15, the embodiment of the present application provides a schematic structural diagram of a message processing apparatus.

Referring to Figure 15, the apparatus 1500 includes:

The transceiver unit 1501 is configured to receive a wake-up radio frequency protocol data unit WUR PPDU sent by the first device, where The WUR PPDU includes a first portion that precedes the second portion, the first portion conforms to the first standard protocol, the second portion conforms to the second standard protocol, and the second standard protocol is the WUR standard The first part includes a traditional preamble and a physical header field;

The processing unit 1502 is configured to: if the second part is included in the WUR PPDU according to the WUR indication, receive, by the WUR, the second part when the apparatus meets a preset condition; The conditions include that the device includes a WUR.

Optionally, the preset condition further includes: the receiving end identifier in the WUR PPDU is an identifier of the device.

Optionally, the first part further includes an identifier of a basic service set BSS to which the first device belongs.

Optionally, the preset condition further includes: the identifier of the BSS to which the first device belongs is the same as the identifier of the BSS to which the device belongs.

Optionally, the processing unit 1502 is further configured to:

If it is determined according to the WUR indication that the second part is included in the WUR PPDU, the second part is discarded when it is determined that the preset condition is not met.

It should be understood that the division of each unit above is only a division of a logical function, and the actual implementation may be integrated into one physical entity in whole or in part, or may be physically separated.

Based on the same technical concept, the embodiment of the present application further provides a message processing apparatus, which can execute the method flow executed by the first device in each method embodiment related to FIG. 8. As shown in FIG. 16, the embodiment of the present application provides a schematic structural diagram of a message processing apparatus.

Referring to Figure 16, the apparatus 1600 includes:

The processor 1601 is configured to generate a wake-up radio frequency protocol data unit WUR PPDU, where the WUR PPDU includes a portion and a second portion, the first portion being located before the second portion, the first portion conforming to a first standard protocol, the second portion conforming to a second standard protocol, the second standard protocol being a WUR standard; Some include traditional leading and physical header fields;

The transceiver 1602 is configured to send the WUR PPDU.

The transceiver 1602 includes a primary communication interface and may also include a WUR interface.

The device may also include a power source 1603 (such as a battery) for powering various components. Alternatively, the power source 1603 may be logically coupled to the processor 1601 through a power management system to manage charging, discharging, and power management through the power management system. And other functions.

The apparatus can also include a memory 1604 that can be used to store software programs and modules, and the processor 1601 executes various functional applications and data processing of the apparatus by running software programs and modules stored in the memory 1604.

It can be understood by those skilled in the art that the message processing apparatus 1600 shown in FIG. 16 is only an example of implementation, does not constitute a limitation of the message processing apparatus 1600, and may include more or less components than those illustrated. , or combine some parts, or different parts.

Based on the same technical concept, the embodiment of the present application further provides a message processing apparatus, which can execute the method flow executed by the second device in each method embodiment related to FIG. 8. As shown in FIG. 17, the embodiment of the present application provides a schematic structural diagram of a message processing apparatus.

Referring to Figure 17, the apparatus 1700 includes:

The transceiver 1701 is configured to receive a wake-up radio frequency protocol data unit WUR PPDU sent by the first device, where the WUR The PPDU includes a first portion that is located before the second portion, the first portion conforms to the first standard protocol, the second portion conforms to the second standard protocol, and the second standard protocol is the WUR standard; The first portion includes a legacy preamble and a physical header field;

The processor 1702 is configured to: if the second part is included in the WUR PPDU according to the WUR indication, receive, by the WUR, the second part when the apparatus meets a preset condition; The conditions include that the device includes a WUR.

The transceiver 1701 includes a primary communication interface and may also include a WUR interface.

The device may also include a power source 1703 (such as a battery) for powering various components. Alternatively, the power source 1703 may be logically coupled to the processor 1702 through a power management system to manage charge, discharge, and power management through the power management system. And other functions.

The apparatus can also include a memory 1704 that can be used to store software programs and modules, and a processor 1702 that executes various functional applications and data processing of the apparatus by running software programs and modules stored in the memory 1704.

It can be understood by those skilled in the art that the message processing apparatus 1700 shown in FIG. 17 is only an example of implementation, and does not constitute a limitation of the message processing apparatus 1700, and may include more or less components than those illustrated. , or combine some parts, or different parts.

Optionally, the processor 1702 is further configured to:

The embodiment of the present application further provides an apparatus for transmitting a WUR PPDU, and the apparatus may perform the method flow performed by the first device in each method embodiment related to FIG. 8 , and the structure thereof is as shown in FIG. 18 . The device 10 can be used to generate and send a WUR PPDU, and is specifically composed of two parts: a generating module 11 for generating a WUR PPDU, the WUR PPDU comprising a first part and a second part, the first part being located before the second part, the first part conforming to the first part a standard protocol, the second part conforms to the second standard protocol, the second standard protocol is the WUR standard, and the first part includes a WUR indication for indicating that the first part is followed by the second part, the WUR indication is the first part of the first part A predefined reserved value of the sub-domain; the first communication interface 12 is configured to send the WUR PPDU generated by the generating module 11. The generating module 11 may be an 802.11 physical layer processing circuit for constructing a WUR PPDU; the function of the generating module 11 may be implemented by a processor. The first communication interface 12, that is, the main communication interface transmitter, includes a transmitting circuit and a radio frequency antenna, wherein the transmitting circuit is configured to perform coding, interleaving, and modulation, IFFT, and the like signal processing operations on the WUR PPDU. For example, the first communication interface 12 can be an OFDM wideband transmitter, as described in the background section, the OFDM wideband transmitter can be utilized to generate a narrowband WUR wakeup signal, so the wideband physical head portion and narrowband of the WUR PPDU can be generated using the OFDM wideband transmitter. WUR payload section.

The embodiment of the present application further provides an apparatus for transmitting a WUR PPDU, and the apparatus may perform a method flow performed by a second device in each method embodiment related to FIG. 8 , and the structure thereof is as shown in FIG. 19 . The device 20 can be used to generate and send a WUR PPDU, and is specifically composed of two parts: a generating module 21, configured to generate a WUR PPDU, the WUR PPDU includes a first part and a second part, the first part is located before the second part, and the first part is in accordance with the first part a standard protocol, the second part conforms to the second standard protocol, the second standard protocol is the WUR standard, and the first part includes a WUR indication for indicating that the first part is followed by the second part, the WUR indication is the first part of the first part a predefined reserved value of the sub-domain; a first communication interface 22 for transmitting a first portion of the WUR PPDU generated by the generating module 21; and a second communication interface 23 for transmitting the second portion of the WUR PPDU generated by the generating module 21 . The generating module 21 may be an 802.11 physical layer processing circuit for constructing a WUR PPDU; the function of the generating module 21 may be implemented by a processor. The first communication interface 22 may be a transmitter of the main communication interface, including a transmitting circuit and a radio frequency antenna, wherein the transmitting circuit is configured to perform coding, interleaving, and modulation, IFFT, and the like signal processing operations on the first portion of the WUR PPDU. The second communication interface 23 may be a WUR transmitter, including a transmitting circuit and a radio frequency antenna, wherein the transmitting circuit is configured to perform possible encoding of the second portion of the WUR PPDU and signal processing operations such as modulation, IFFT, and the like. For example, the first communication interface 22 can be an OFDM wideband transmitter and the second communication interface 23 can be a WUR narrowband transmitter, wherein the OFDM wideband transmitter is used to generate a wideband physical header portion of the WUR PPDU, and the WUR narrowband transmitter is used to generate The narrowband WUR payload portion of the WUR PPDU. The first communication interface and the second communication interface can share the same RF antenna.

The related parts of the method embodiments of the present invention may be referred to each other; the apparatus provided in each device embodiment is used to perform the method provided by the corresponding method embodiment, so each device embodiment may refer to related methods in the related method embodiments. Partial understanding.

The names of the messages/frames, modules, or units provided in the various embodiments of the present invention are merely examples, and other names may be used as long as the functions of the messages/frames, modules, or units are the same.

A person skilled in the art can understand that all or part of the steps of implementing the above embodiments can be completed by a program to instruct related hardware, and the program can be stored in a readable storage medium of a device, when the program is executed. Including all or part of the above steps, the storage medium, such as: FLASH, EEPROM, and the like.

The specific embodiments described above further explain the objects, technical solutions and beneficial effects of the present invention. It should be understood that different embodiments may be combined, and the above is only the specific embodiment of the present invention. It is not intended to limit the scope of the invention, and any combination, modification, equivalent substitution, modification, etc., which are within the spirit and scope of the invention, are intended to be included within the scope of the invention.

Claims

A packet processing method, comprising:

The first device generates a wake-up radio frequency protocol data unit WUR PPDU, the WUR PPDU including a first portion and a second portion, the first portion being located before the second portion, the first portion conforming to the first standard protocol, and the second portion conforming to a second standard protocol, the second standard protocol being a WUR standard; the first part comprising a traditional preamble and a physical header field;

The physical header field includes a WUR indication, where the WUR indication is used to indicate that the second part is included after the first part in the WUR PPDU, and the WUR indication is the first in the physical header field. a predefined reserved value for a subdomain;

The first device sends the WUR PPDU.
The method according to claim 1, wherein the first standard protocol is 802.11n, and the physical header field comprises a high throughput signaling HT-SIG domain;

The first sub-domain is a modulation coding scheme MCS sub-domain in the HT-SIG domain, or the first sub-domain is a reserved bit in the HT-SIG domain.
The method according to claim 1, wherein the first standard protocol is 802.11ac, and the physical header field comprises a very high throughput signaling-A VHT-SIG-A domain;

The first sub-domain is an MCS sub-domain in the VHT-SIG-A domain, or the first sub-domain is a reserved bit in the VHT-SIG-A domain.
The method according to claim 1, wherein the first standard protocol is 802.11ax, and the physical header field comprises a repetition of a traditional preamble signaling RL-SIG domain and an efficient signaling-A HE-SIG-A domain. The first part conforms to an efficient single-user HE SU PPDU format;

The first sub-domain is an MCS sub-domain in the HE-SIG-A domain, or the first sub-domain is a reserved bit in the HE-SIG-A domain.
The method according to claim 1, wherein the first standard protocol is 802.11ax, the physical header field comprises an RL-SIG domain and an HE-SIG-A domain, and the first part conforms to an efficient extended range User HE ER SU PPDU format;

The first sub-domain is an MCS sub-domain in the HE-SIG-A domain, or the first sub-domain is a reserved bit in the HE-SIG-A domain, or the first sub-domain is The Nsts subfield in the HE-SIG-A domain, or the first subdomain is a BW subdomain in the HE-SIG-A domain.
The method according to any one of claims 1 to 5, wherein the first part further comprises a receiving end identifier that receives the receiving end of the WUR PPDU.
The method according to any one of claims 1 to 6, wherein the first part further comprises an identifier of a basic service set BSS to which the first device belongs.
A packet processing method, comprising:

The second device receives a wake-up radio frequency protocol data unit WUR PPDU sent by the first device, where the WUR PPDU includes a first part and a second part, where the first part is located before the second part, and the first part conforms to the first standard protocol. The second part conforms to the second standard protocol, and the second standard protocol is the WUR standard; the first part comprises a traditional preamble and a physical header field;

Wherein the physical header field includes a WUR indication, and the WUR indication is used to indicate the WUR PPDU. The first part is followed by the second part, and the WUR indication is a predefined reserved value of the first sub-domain in the physical header field;

If the second device determines that the second part is included in the WUR PPDU according to the WUR indication, when the second device meets a preset condition, the second part is received and parsed by the WUR; The preset condition includes: the second device includes a WUR.
The method according to claim 8, wherein the first standard protocol is 802.11n, and the physical header field comprises a high throughput signaling HT-SIG domain;

The first sub-domain is a modulation coding scheme MCS sub-domain in the HT-SIG domain, or the first sub-domain is a reserved bit in the HT-SIG domain.
The method according to claim 8, wherein the first standard protocol is 802.11ac, and the physical header field comprises a very high throughput signaling-A VHT-SIG-A domain;

The first sub-domain is an MCS sub-domain in the VHT-SIG-A domain, or the first sub-domain is a reserved bit in the VHT-SIG-A domain.
The method according to claim 8, wherein the first standard protocol is 802.11ax, and the physical header field comprises a repetition of a traditional preamble signaling RL-SIG domain and an efficient signaling-A HE-SIG-A domain. The first part conforms to an efficient single-user HE SU PPDU format;

The first sub-domain is an MCS sub-domain in the HE-SIG-A domain, or the first sub-domain is a reserved bit in the HE-SIG-A domain.
The method according to claim 8, wherein the first standard protocol is 802.11ax, the physical header field comprises an RL-SIG domain and an HE-SIG-A domain, and the first part conforms to an efficient extended range User HE ER SU PPDU format;

The first sub-domain is an MCS sub-domain in the HE-SIG-A domain, or the first sub-domain is a reserved bit in the HE-SIG-A domain, or the first sub-domain is The Nsts subfield in the HE-SIG-A domain, or the first subdomain is a BW subdomain in the HE-SIG-A domain.
The method according to any one of claims 8 to 12, wherein the first part further comprises a receiving end identifier that receives the receiving end of the WUR PPDU.
The method according to claim 13, wherein the preset condition further comprises: the receiving end identifier in the WUR PPDU is an identifier of the second device.
The method according to any one of claims 8 to 14, wherein the first part further comprises an identification of a basic service set BSS to which the first device belongs.
The method according to claim 15, wherein the preset condition further comprises: the identifier of the BSS to which the first device belongs is the same as the identifier of the BSS to which the second device belongs.
The method according to any one of claims 8 to 16, wherein the method further comprises:

And if the second device determines, according to the WUR indication, that the second part is included in the WUR PPDU, when the second device determines that the preset condition is not met, the second part is discarded.
The method according to any one of claims 8 to 16, wherein the method further comprises:

If the second device cannot understand the WUR indication, the second device gives up receiving the second portion.
A message processing device, comprising:

a processing unit, configured to generate a wake-up radio frequency protocol data unit WUR PPDU, where the WUR PPDU includes a first part and a second part, where the first part is located before the second part, and the first part conforms to the first standard protocol The second part conforms to the second standard protocol, and the second standard protocol is the WUR standard; the first part comprises a traditional preamble and a physical header field;

The physical header field includes a WUR indication, where the WUR indication is used to indicate that the second part is included after the first part in the WUR PPDU, and the WUR indication is the first in the physical header field. a predefined reserved value for a subdomain;

And a transceiver unit, configured to send the WUR PPDU.
The apparatus according to claim 19, wherein the first standard protocol is 802.11n, and the physical header field comprises a high throughput signaling HT-SIG domain;

The first sub-domain is a modulation coding scheme MCS sub-domain in the HT-SIG domain, or the first sub-domain is a reserved bit in the HT-SIG domain.
The apparatus according to claim 19, wherein the first standard protocol is 802.11ac, and the physical header field comprises a very high throughput signaling-A VHT-SIG-A domain;

The first sub-domain is an MCS sub-domain in the VHT-SIG-A domain, or the first sub-domain is a reserved bit in the VHT-SIG-A domain.
The apparatus according to claim 19, wherein the first standard protocol is 802.11ax, and the physical header field comprises a repetition of a conventional preamble signaling RL-SIG domain and an efficient signaling-A HE-SIG-A domain. The first part conforms to an efficient single-user HE SU PPDU format;

The first sub-domain is an MCS sub-domain in the HE-SIG-A domain, or the first sub-domain is a reserved bit in the HE-SIG-A domain.
The apparatus according to claim 19, wherein the first standard protocol is 802.11ax, the physical header field comprises an RL-SIG domain and an HE-SIG-A domain, and the first part conforms to an efficient extended range User HE ER SU PPDU format;

The first sub-domain is an MCS sub-domain in the HE-SIG-A domain, or the first sub-domain is a reserved bit in the HE-SIG-A domain, or the first sub-domain is The Nsts subfield in the HE-SIG-A domain, or the first subdomain is a BW subdomain in the HE-SIG-A domain.
The apparatus according to any one of claims 19 to 23, wherein the first part further comprises a receiving end identifier that receives the receiving end of the WUR PPDU.
The apparatus according to any one of claims 19 to 24, wherein said first portion further comprises an identification of a basic service set BSS to which said device belongs.
A message processing device, comprising:

a transceiver unit, configured to receive a wake-up radio frequency protocol data unit WUR PPDU sent by the first device, where the WUR PPDU includes a first part and a second part, where the first part is located before the second part, and the first part conforms to the first standard protocol The second part conforms to a second standard protocol, the second standard protocol is a WUR standard; the first part comprises a traditional preamble and a physical header field;

The physical header field includes a WUR indication, where the WUR indication is used to indicate that the second part is included after the first part in the WUR PPDU, and the WUR indication is the first in the physical header field. a predefined reserved value for a subdomain;

a processing unit, configured to: if the second part is included in the WUR PPDU according to the WUR indication, receive, by the WUR, the second part when the apparatus meets a preset condition; Conditions include that the device includes a WUR.
The apparatus according to claim 26, wherein the first standard protocol is 802.11n, and the physical header field comprises a high throughput signaling HT-SIG domain;

The first sub-domain is a modulation coding scheme MCS sub-domain in the HT-SIG domain, or the first sub-domain is a reserved bit in the HT-SIG domain.
The apparatus according to claim 26, wherein the first standard protocol is 802.11ac, and the physical header field comprises a very high throughput signaling-A VHT-SIG-A domain;

The first sub-domain is an MCS sub-domain in the VHT-SIG-A domain, or the first sub-domain is a reserved bit in the VHT-SIG-A domain.
The apparatus according to claim 26, wherein the first standard protocol is 802.11ax, and the physical header field comprises a repetition of a conventional preamble signaling RL-SIG domain and an efficient signaling-A HE-SIG-A domain. The first part conforms to an efficient single-user HE SU PPDU format;

The first sub-domain is an MCS sub-domain in the HE-SIG-A domain, or the first sub-domain is a reserved bit in the HE-SIG-A domain.
The apparatus according to claim 26, wherein the first standard protocol is 802.11ax, the physical header field comprises an RL-SIG domain and an HE-SIG-A domain, and the first part conforms to an efficient extended range User HE ER SU PPDU format;

The first sub-domain is an MCS sub-domain in the HE-SIG-A domain, or the first sub-domain is a reserved bit in the HE-SIG-A domain, or the first sub-domain is The Nsts subfield in the HE-SIG-A domain, or the first subdomain is a BW subdomain in the HE-SIG-A domain.
The apparatus according to any one of claims 26 to 30, wherein the first part further comprises a receiving end identifier that receives the receiving end of the WUR PPDU.
The device according to claim 31, wherein the preset condition further comprises: the receiving end identifier in the WUR PPDU is an identifier of the device.
The apparatus according to any one of claims 26 to 32, wherein said first portion further comprises an identification of a basic service set BSS to which said first device belongs.
The device according to claim 33, wherein the preset condition further comprises: the identifier of the BSS to which the first device belongs is the same as the identifier of the BSS to which the device belongs.
The device according to any one of claims 26 to 34, wherein the processing unit is further configured to:

If it is determined according to the WUR indication that the second part is included in the WUR PPDU, the second part is discarded when it is determined that the preset condition is not met.