WO2018171087A1

WO2018171087A1 - Wireless wake up method, control device and station device

Info

Publication number: WO2018171087A1
Application number: PCT/CN2017/092392
Authority: WO
Inventors: 丁志明; 杨云松
Original assignee: 华为技术有限公司
Priority date: 2017-03-21
Filing date: 2017-07-10
Publication date: 2018-09-27
Also published as: CN110431884B; CN110431884A

Abstract

Provided are a wireless wake up method, a control device and a station device. A control device does not need to take a position of a waking window of a WUR of a station device woken up into consideration, and only needs to send a WUP frame in a time window starting at a pre-set time point. Meanwhile, the station device awakes before the time window to receive the WUP frame, and the station device can enter, when determining that there is no subsequent WUP frame, a dormant state in advance and does not need to continue to maintain a waking state until the time window is over so as to save on the electricity of a wireless terminal. The method comprises: the control device competing for a wireless channel in a first time window starting at a first pre-set time point; and after having competed for the wireless channel, the control device sending a wake up interface frame sequence, wherein a first frame in the wake up interface frame sequence is a beacon frame or a wake up frame; and a WIFS between a tail end of a previous frame in two adjacent frames in the wake up interface frame sequence and a starting end of a latter frame is less than or equal to a short interframe space (SIFS) of a main communication interface.

Description

Wireless wake-up method, control device and site device

Technical field

The present application relates to the field of wireless communications, and more particularly, to a method, a control device, and a site device for wireless wake-up.

Background technique

IEEE 802.11ba specifies that a Wake Up Receiver (WUR) can be used to implement the low power consumption of the Wireless Fidelity (WiFi) module.

Specifically, a WiFi terminal or a WiFi station device (Station, STA) has a main communication module WiFi interface (or a WiFi module) and a low-power communication module WUR interface (or a WUR module), which is associated with a STA at the STA. After the access point (AP), the WiFi interface is in a deep sleep state (the WiFi module is powered off) in the case of no communication, so as to save power, when the AP needs to send data to the STA, The WUR interface of the STA sends a wake-up message (WUP), and the WUR wakes up the STA's WiFi interface after receiving the WUP, and then powers up the WiFi module, so that the STA's main communication module can receive the downlink data sent by the AP to the STA.

WUR is a simple receiver that does not have a transmit function and can only receive information at a very low rate. At the same time, WUR also uses a duty cycle (DC) mode of operation, for example, a duty cycle of 100 milliseconds. Among them, 10 milliseconds WUR is in the awake state, and can receive signals, and the other 90 milliseconds WUR is in a sleep state, and cannot receive signals.

However, when the WUR uses the duty cycle mode, the WUP sent by the AP cannot be received at any time. Therefore, how to make the WUR wake up when the AP needs to send the WUP to receive the WUP sent by the AP is an urgent problem to be solved.

Summary of the invention

The embodiment of the present application provides a method, a control device, and a site device for wireless wake-up, and the control device (for example, an AP) does not need to consider the location of the WUR wake-up window of the awakened site device (for example, the wireless terminal device), as long as A wake-up message WUP frame is sent in a time window starting from a preset time point. At the same time, the station device wakes up to receive the WUP frame before the time window, and the station device can enter the sleep state in advance when determining that there is no subsequent WUP frame, and does not have to continue. Stay awake until the end of the time window to save power to the wireless terminal.

In a first aspect, the embodiment of the present application provides a method for wireless wake-up, including:

The control device contends for the wireless channel within a first time window starting at a first preset time point;

After competing for the wireless channel, the control device sends a wake-up interface frame sequence, where the first frame in the wake-up interface frame sequence is a beacon frame or a wake-up frame, and the frame after the first frame in the wake-up interface frame sequence is a wake-up frame, each wake-up frame in the wake-up interface frame sequence includes a wake-up interface identifier, and each wake-up frame is used to wake up the main communication of the site device where the wake-up receiver is located corresponding to the wake-up interface identifier included in each wake-up frame interface;

The interval WIFS between the end of the previous frame and the start of the next frame in the adjacent two frames in the wake-up interface frame sequence is less than or equal to the short frame interval SIFS of the primary communication interface, so that the site device according to the WIFS It is judged whether there is a subsequent frame after receiving one frame in the wake-up interface frame sequence.

Therefore, in the wireless wake-up method of the embodiment of the present application, the control device starts at a first preset time point. The first time window competes for the wireless channel, and after competing for the wireless channel, the wake-up interface frame sequence is sent, and the control device can transmit the WUR frame when the WUR frame needs to be sent, regardless of the WUR wake-up window of the awakened site device. The location, in turn, allows flexible transmission of WUR frames while ensuring efficient transmission of the WUR.

Optionally, the first preset time point may be a starting time point of the first frame to be determined by the control device (eg, the AP) according to its own clock.

Optionally, when the first frame is a beacon frame, the control device periodically sends the first frame.

Optionally, when the first frame is a beacon frame, a length of time between two adjacent first preset time points is a time length of a period in which the beacon frame is transmitted.

Optionally, the duration of the first time window is less than the transmission period of the beacon frame.

Optionally, when the first frame is a beacon frame, the first frame may include timestamp information, where the timestamp information is used to perform time synchronization between the control device and the site device.

Optionally, the wake-up frame in the wake-up interface frame sequence may include an identifier of the wake-up receiver of the first site device for waking up the primary communication interface of the first site device. Optionally, the wake-up frame in the wake-up interface frame sequence may also include a group identifier of the wake-up receiver group corresponding to the group of station devices, and is used to wake up the primary communication interface of the group of site devices.

Optionally, in an implementation manner of the first aspect, each frame in the wake-up interface frame sequence includes first indication information, where the first indication information takes a first value, indicating that the control device subsequently sends a frame, where the Taking a second value of the indication information indicates that the control device does not send the frame subsequently, where

The first indication information in the frame other than the last frame of the wake-up interface frame sequence takes the first value, and the first indication information in the last frame of the wake-up interface frame sequence takes the second value.

Optionally, after the control device sends a frame, the first indication information included in the frame may be assigned according to whether the frame is subsequently sent.

Optionally, in an implementation manner of the first aspect, the first frame in the wake-up interface frame sequence includes a first preamble, and each frame in the wake-up interface frame sequence after the first frame includes a second The preamble, the second preamble is shorter than the first preamble.

Optionally, in an implementation manner of the first aspect, before the sending the wake-up interface frame sequence, the method further includes:

The control device sends a primary communication interface signaling, where the primary communication interface signaling includes the signaling that the control device sends the primary communication interface to the wireless channel occupied by the last frame in the sequence of the wake-up interface frames. Time length information.

In a second aspect, the embodiment of the present application provides a method for wireless wake-up, including:

The station device starts to listen to the wireless channel before the first time window starting at the first preset time point;

Receiving, by the wake-up receiver, the first frame from the control device, where the first frame is a beacon frame or a wake-up frame, and the frame received by the station device after the first frame by the wake-up receiver is a wake-up frame, where Each wake-up frame received by the site device through the wake-up receiver includes a wake-up interface identifier, and the wake-up interface identifier is used to wake up the main communication interface of the site device where the wake-up receiver is located corresponding to the wake-up interface identifier;

If the first frame is a wake-up frame and the wake-up interface identifier included in the first frame is an identifier of the wake-up receiver of the site device, after receiving the first frame, the site device stops listening to the channel; or

If the first frame is a beacon frame or the first frame is a wake-up frame and the wake-up interface included in the first frame identifies an identifier of a wake-up receiver that is not the station device, after receiving the first frame, the The site device listens for the first time The wireless channel to receive a subsequent second frame;

The first duration includes a wake-up interface frame interval WIFS and a transmission time of a preamble of the second frame to be received, where the WIFS is the end of the previous frame to the next frame of the two adjacent frames transmitted through the wake-up interface. The interval between the start; the WIFS is less than or equal to the short frame interval SIFS of the primary communication interface.

Therefore, in the wireless wake-up method of the embodiment of the present application, the site device starts to listen to the wireless channel before the first time window starting at the first preset time point, and after receiving the wake-up frame for the site device itself, The listening channel can be stopped early to save energy.

Optionally, in an implementation manner of the second aspect, the first frame is a beacon frame or the first frame is a wake-up frame, and the wake-up interface included in the first frame identifies a wake-up that is not the site device. When the identifier of the receiver is received, after receiving the first frame, the station device listens to the wireless channel for receiving the second frame in the first time period, including:

When the station device does not hear the signal of the second frame within the first duration, the station device stops listening to the wireless channel; or

When the station device detects the presence of the second frame signal within the first time period, completes receiving the second frame, and if the second frame includes the identifier of the wake-up receiver of the site device, the site device wakes up the The primary communication interface of the site device and stop listening to the wireless channel; or

After the station device receives the subsequent second frame within the first duration, and the second frame does not include the identifier of the wake-up receiver of the site device, the site device after receiving the second frame The wireless channel continues to listen for the first time period to determine if there are subsequent frames.

Further, in the wireless wake-up method of the embodiment of the present application, after the station device receives the first frame that does not include the identifier of the wake-up receiver of its own, and after detecting the first time duration, the second device does not detect the presence of the second frame. When the signal of the frame is received, the wireless channel can be stopped in advance to save energy.

Optionally, in an implementation manner of the second aspect, the first frame received by the site device by the wake-up receiver, and the frame received after the first frame, includes first indication information, the first indication The first value of the information indicates that the control device sends the frame subsequently, and the second indication information indicates that the control device does not send the frame subsequently;

After receiving the first frame, and before starting to listen to the wireless channel within the first duration, the method further includes:

The station device determines, according to the first indication message included in the first frame, whether to listen to the wireless channel within the first duration after receiving the first frame.

Further, in the method for wireless wake-up according to the embodiment of the present application, the station device determines, according to the received first indication information included in each frame, whether to continue to listen to the channel, thereby avoiding unnecessary listening to the wireless channel, Save energy.

Optionally, in an implementation manner of the second aspect, before the receiving, by the site device, the first frame by the control device, the method further includes:

The site device receives the primary communication interface signaling from the control device, and the primary communication interface signaling includes the control device transmitting the signaling of the primary communication interface to the wireless channel occupied by the first frame or the last wake-up frame. Length of time information;

The site device determines that the occupied wireless channel is not used by the primary communication interface during the time period indicated by the time length information.

Therefore, in the method for wireless wake-up according to the embodiment of the present application, the site device does not preempt the channel when the control device occupies the wireless channel, and ensures normal communication of the control device.

In a third aspect, an embodiment of the present application provides a method for wireless wake-up, including:

After competing for the wireless channel, the control device sends a wake-up interface frame sequence, where the first frame in the wake-up interface frame sequence is a beacon frame or a wake-up frame, and the frame after the first frame in the wake-up interface frame sequence is a wake-up frame, each wake-up frame in the wake-up interface frame sequence includes a wake-up interface identifier, and each wake-up frame is used to wake up the main communication of the site device where the wake-up receiver is located corresponding to the wake-up interface identifier included in each wake-up frame An interface, where each frame of the wake-up interface frame sequence includes first indication information, where the first indication information takes a first value to indicate that the control device subsequently sends a frame, and the first indication information takes a second value to indicate that the control device does not subsequently Sending a frame;

The first indication information included in the frame other than the last frame in the wake-up interface frame sequence takes a first value, and the first indication information included in the last frame in the wake-up interface frame sequence takes the first Two values.

Therefore, in the wireless wake-up method of the embodiment of the present application, the control device contends for the wireless channel in the first time window starting at the first preset time point, and after contending for the wireless channel, sends the wake-up interface frame sequence, and By assigning a first value or a second value to the first indication information included in each frame in the wake-up interface frame sequence, indicating whether there is a subsequent frame, so that the station device can receive the frame in the wake-up interface frame sequence, Determining whether to continue listening to the channel according to the value of the first indication information included in the frame, and further, the station device can accurately receive the control device to send the wake-up frame.

Further, when the station device determines that there is no subsequent frame according to the value of the first indication information, the listening to the wireless channel may be stopped in advance to save energy.

Optionally, in an implementation manner of the third aspect, the control device sends a wake-up interface frame sequence, including:

Except for the last frame in the wake-up interface frame sequence, the control device competes for the wireless channel in a second time window in which the transmission end time point of each transmitted transmission is the start time point, and competes in the After the wireless channel, a subsequent frame of the frame in which the transmission is completed is transmitted.

The control device sends the first frame;

When the first indication information included in the first frame indicates that there is a subsequent frame after the first frame, the control device starts the time point of the transmission of the first frame as a starting time point, and the first frame interval is separated. A subsequent frame is then transmitted, the first frame interval being less than or equal to the short frame interval SIFS of the primary communication interface.

In a fourth aspect, the embodiment of the present application provides a method for wireless wake-up, including:

Receiving, by the wake-up receiver, the first frame from the control device, where the first frame is a beacon frame or a wake-up frame, and the frame received by the station device after the first frame by the wake-up receiver is a wake-up frame, where Each wake-up frame received by the site device includes a wake-up interface identifier, and the wake-up interface identifier is used to wake up the main communication interface of the site device where the wake-up receiver is located corresponding to the wake-up interface identifier included in each wake-up frame, All the frames received by the site device through the awake interface device include first indication information, where the first indication information takes a first value to indicate that the control device sends a frame subsequently, and the first indication information takes a second value to indicate that the control device does not send subsequently. frame;

If the first frame is a wake-up frame and the wake-up interface identifier included in the first frame is an identifier of the wake-up receiver of the site device, the site device wakes up the primary communication interface of the site device, and stops listening to the wireless device. Channel; or

If the first frame is a beacon frame or the first frame is a wake-up frame and the wake-up interface included in the first frame identifies a wake-up interface identifier that is not the site device, the site device includes the first frame according to the The first indication information determines whether to continue listening to the wireless channel.

Therefore, in the wireless wake-up method of the embodiment of the present application, the site device starts to listen to the wireless channel before the first time window starting at the first preset time point, and after receiving the first frame, the site device may The information included in one frame determines whether to continue to listen to the wireless channel, and thus, the station device can accurately receive the control device to send the wake-up frame.

Optionally, in an implementation manner of the fourth aspect, before the receiving, by the site device, the first frame by the control device, the method further includes:

In a fifth aspect, a control device is provided, the control device comprising means for performing the method of the first aspect or any of the possible implementations of the first aspect.

In a sixth aspect, a site device is provided, the site device comprising means for performing the method of any of the second aspect or any of the possible implementations of the second aspect.

In a seventh aspect, a control device is provided, the control device comprising means for performing the method of any of the third or third aspects of the possible implementation.

In an eighth aspect, a site device is provided, the site device comprising means for performing the method of any of the possible implementations of the fourth aspect or the fourth aspect.

In a ninth aspect, a control device is provided, the control device comprising a processor, a memory, and a communication interface. The processor is coupled to the memory and communication interface. The memory is for storing instructions for the processor to execute, and the communication interface is for communicating with other network elements under the control of the processor. When the processor executes the instructions stored by the memory, the execution causes the processor to perform the method of the first aspect or any of the possible implementations of the first aspect.

In a tenth aspect, a site device is provided, the site device comprising a processor, a memory, and a communication interface. The processor is coupled to the memory and communication interface. The memory is for storing instructions for the processor to execute, and the communication interface is for communicating with other network elements under the control of the processor. When the processor executes the instructions stored by the memory, the execution causes the processor to perform the method of any of the possible implementations of the second aspect or the second aspect.

In an eleventh aspect, a control device is provided, the control device comprising a processor, a memory, and a communication interface. The processor is coupled to the memory and communication interface. The memory is for storing instructions for the processor to execute, and the communication interface is for communicating with other network elements under the control of the processor. When the processor executes the instructions stored by the memory, the execution causes the processor to perform the method of any of the possible implementations of the third aspect or the third aspect.

In a twelfth aspect, a site device is provided, the site device comprising a processor, a memory, and a communication interface. The processor is coupled to the memory and communication interface. The memory is for storing instructions for the processor to execute, and the communication interface is for communicating with other network elements under the control of the processor. When the processor executes the instructions stored by the memory, the execution causes the processor to perform the method of any of the possible implementations of the fourth aspect or the fourth aspect.

A thirteenth aspect, a computer storage medium storing program code for indicating execution of the method of any of the first aspect or the first possible implementation of the first aspect instruction.

In a fourteenth aspect, a computer storage medium is provided, the program storage medium storing program code for indicating a method of performing the second aspect or any of the possible implementation manners of the second aspect instruction.

According to a fifteenth aspect, a computer storage medium is provided, the program storage medium storing program code for indicating a method in any one of the possible implementation manners of the third aspect or the third aspect instruction.

In a sixteenth aspect, a computer storage medium is provided, the program storage medium storing program code for indicating a method in any one of the possible implementations of the fourth aspect or the fourth aspect described above instruction.

In a seventeenth aspect, a computer program product comprising instructions for causing a computer to perform the method of the above aspects when executed on a computer is provided.

DRAWINGS

1 is a schematic diagram of a communication system using a method of wireless wake-up of the present application.

2 is a schematic flow chart of a method for wireless wake-up according to the present application.

FIG. 3 is a schematic diagram of an AP sending a wake-up interface frame sequence according to an embodiment of the present application.

4 is a schematic diagram of a first preamble and a second preamble in accordance with an embodiment of the present application.

FIG. 5 is a schematic diagram of primary communication interface signaling according to an embodiment of the present application.

FIG. 6 is another schematic diagram of an AP sending a wake-up interface frame sequence according to an embodiment of the present application.

FIG. 7 is another schematic flowchart of a method for wireless wake-up according to the present application.

FIG. 8 is still another schematic diagram of an AP sending a wake-up interface frame sequence according to an embodiment of the present application.

FIG. 9 is still another schematic diagram of an AP sending a wake-up interface frame sequence according to an embodiment of the present application.

FIG. 10 is a schematic block diagram of a control device provided by an embodiment of the present application.

FIG. 11 is a schematic block diagram of a site device provided by an embodiment of the present application.

Figure 12 is a schematic block diagram of a control device in accordance with the present application.

Figure 13 is a schematic block diagram of a site device in accordance with the present application.

Figure 14 is another schematic block diagram of a control device in accordance with the present application.

15 is another schematic block diagram of a site device in accordance with the present application.

detailed description

The technical solutions in the present application will be described below with reference to the accompanying drawings.

1 is a schematic diagram of a communication system using a method of wireless wake-up of the present application. As shown in FIG. 1, the communication system 100 includes a control device 110. The control device 110 has a wake-up transmitter, a main communication interface transceiver, a central processing unit, a memory, and an antenna. The main communication interface transceiver is configured to send the initial part of the traditional WiFi frame before the wake-up interface frame, that is, the main communication interface signaling in the embodiment of the present application and the preamble of the traditional WiFi frame (L-STF, L-LTF) In part, the primary communication interface signaling may include a signaling L-SIG portion of a legacy WiFi frame. The wake-up transmitter is used to send a wake-up interface frame. The wake-up transmitter can be the transmitting portion of the primary communication interface transceiver, ie the primary communication interface transceiver can be used to transmit the wake-up interface frame. The wake-up transmitter and the main communication interface transceiver can share the antenna, or different antennas can be used separately. The central processing unit and the wake-up transmitter, the main communication interface transceiver, and the memory are connected through a bus to implement data exchange.

Control device 110 can communicate with a plurality of site devices (e.g., site device 121 and site device 122), however, it will be appreciated that control device 110 can communicate with any number of site devices similar to

site device

121 or 122.

A site device (e.g., site device 121 or site device 122) has a wake-up receiver WUR, a primary communication interface transceiver, a central processing unit, a memory, and an antenna. The WUR and the main communication interface transceiver can share the antenna or use different antennas. The central processing unit, the WUR, the main communication interface transceiver, and the memory are connected through a bus to implement data exchange. After receiving the wake-up frame for itself, the WUR wakes up the main communication interface transceiver through the interface.

Optionally, in the embodiment of the present application, the control device 110 may be a Wireless Fidelity Access Point (WiFi AP) or a Worldwide Interoperability for Microwave Access Base. Station, WiMAX BS), or a wireless controller in a Cloud Radio Access Network (CRAN), or the network device can be a network device in a future 5G network or a public land mobile network in the future (Public) Network devices in the Land Mobile Network, PLMN).

Optionally, in the embodiment of the present application, the site device (for example, the site device 121 or the site device 122) may refer to an access terminal having a WiFi function, a user equipment (User Equipment, UE), a subscriber unit, a subscriber station, Mobile station, mobile station, remote station, remote terminal, mobile terminal, user terminal, terminal, wireless communication device, user agent or user device. The access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), with wireless communication. Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in the Internet of Things, virtual reality devices, terminal devices in future 5G networks, or future evolved public land mobile networks Terminal equipment in the (Public Land Mobile Network, PLMN).

The method for wireless wake-up provided by the embodiment of the present application can be applied to a site device (for example, a user device), and the site device can receive a wake-up frame from the control device through the wake-up interface through the wake-up interface device, and the site device can pass the main communication interface ( WIFI interface) performs data communication with the control device.

The method for wireless wake-up provided by the embodiment of the present application may also be applied to a control device (for example, an access network device), where the control device sends a wake-up frame to the site device by using the wake-up receiver, and the main communication interface (WIFI interface) and the site The device performs data communication.

It should be understood that the station device can receive the wake-up frame WUP sent by the control device through the wake-up receiver WUR, and after receiving the wake-up frame for itself, wake up its own main communication interface to perform data communication with the control device.

It should also be understood that the control device transmits the wake-up frame by way of broadcast.

Furthermore, various aspects or features of the present application can be implemented as a method, apparatus, or article of manufacture using standard programming and/or engineering techniques. The term "article of manufacture" as used in this application encompasses a computer program accessible from any computer-readable device, carrier, or media. For example, the computer readable medium may include, but is not limited to, a magnetic storage device (eg, a hard disk, a floppy disk, or a magnetic tape, etc.), such as a compact disc (CD), a digital versatile disc (Digital Versatile Disc, DVD). Etc.), smart cards and flash memory devices (eg, Erasable Programmable Read-Only Memory (EPROM), cards, sticks or key drivers, etc.). Additionally, various storage media described herein can represent one or more devices and/or other machine-readable media for storing information. The term "machine-readable medium" may include, but is not limited to, a variety of media capable of storing, containing, and/or carrying instructions and/or data.

It should be understood that the control device in this application may be a network device, and further, may be an access network device. The site device can be a user device.

In order to better understand the present application, the present application will be described below with reference to FIGS. 2-9.

2 is a schematic flow diagram of a method 200 of wireless wake-up according to the present application. As shown in FIG. 2, the method 200 includes the following.

210. The control device contends for the wireless channel in a first time window starting at a first preset time point.

Optionally, the first preset time point is a starting time point of a transmit beacon frame (WUR Beacon, WB) determined by the control device according to its own clock.

Optionally, the point between the first presets may be a target beacon frame transmission time point on the WUR interface. The WUR interface function of the control device can be simulated by the main communication interface, that is to say, the control device can simulate the sending of the WUR interface message by the main communication interface, and of course the control device has a WUR interface module independent of the main communication interface.

Optionally, the control device can explicitly determine the first preset time point.

Alternatively, the control device may periodically transmit the beacon frame, for example, transmitting the beacon frame every 102.4 milliseconds, at which time the control device periodically contends for the wireless channel within a specific time window, this particular time window It is the time window starting from the start of the transmission of the beacon frame.

Optionally, the duration of the first time window is less than the duration between two adjacent preset time points, that is, the duration of the first time window is smaller than the transmission period of the beacon frame.

Optionally, when the control device does not compete for the wireless channel within the first time window starting at the first preset time point, the control device abandons the current beacon frame transmission. Optionally, at this time, the station device listens to the channel before the start of the first time window, and stops listening to the channel after the end of the first time window.

Alternatively, the wireless channel can be contending only when the wireless channel is in an idle state.

220. After competing to the wireless channel, the control device sends a wake-up interface frame sequence, where the first frame in the wake-up interface frame sequence is a beacon frame or a wake-up frame, after the first frame in the wake-up interface frame sequence The frame is a wake-up frame, and each wake-up frame in the wake-up interface frame sequence includes a wake-up interface identifier, and each wake-up frame is used to wake up the wake-up interface identifier included in each wake-up frame identifier corresponding to the site device where the wake-up receiver is located Main communication interface.

Optionally, the interval between the end of the previous frame and the start of the next frame in the adjacent two frames in the wake-up interface frame sequence (WUR Inter Frame Space, WIFS) is less than or equal to the short frame interval of the main communication interface. (Short Inter Frame Space, SIFS), so that the station device determines, according to the WIFS, whether there is a subsequent frame after receiving one frame in the wake-up interface frame sequence.

It should be understood that the control device can simultaneously transmit the wake-up interface frame sequence to a plurality of site devices.

It should also be understood that the control device does not transmit all the frames in the wake-up interface frame sequence at one time, but transmits the frames in the wake-up interface frame sequence one frame at a time, and all the frames transmitted in one transmission period constitute the frame. Wake up the interface frame sequence.

It should also be understood that the control device has a primary communication interface and a wake-up interface with each of the plurality of site devices, and the wake-up receiver of each site device receives the wake-up interface frame sequence through the wake-up interface.

It should also be understood that the control device sends a beacon frame for indicating the presence of the control device, which is beneficial for the site device to discover the control device on the WUR interface or to determine that the control device is in an online state.

Optionally, the WIFS is less than or equal to the SIFS to ensure that the transmission of subsequent WUR frames is not interrupted by the insertion of frames between other WUR frames by other site devices (WiFi devices).

Alternatively, the WIFS should not be too small, so that the WUR of the site device can complete the processing of the received frame in time after receiving one frame and before starting to receive the next frame.

Optionally, the control device sends the wake-up interface frame sequence by broadcast.

For example, as shown in FIG. 3, an access point device (AP) contends for a wireless channel in a first time window starting at a first preset time point, and after broadcasting to the wireless channel, is broadcasted. The wake-up interface frame sequence (WB, WUP1, and WUP2), WUR1, WUR2, and WUR3 start listening to the wireless channel before receiving the first time window starting at the first preset time point to receive the wake-up interface frame sequence, WUR1 WUR2 and WUR3 belong to 3 site devices respectively.

Optionally, the first frame may include timestamp information for performing clock synchronization between the control device and the site device.

Optionally, the wake-up interface identifier included in each wake-up frame may be used to wake up a primary communication interface of a site device, or may wake up a primary communication interface of a group of site devices.

Optionally, the first frame may be included in the wake-up interface frame sequence.

Optionally, the specific value of the SIFS is related to the WiFi channel width and the spectrum segment in which the spectrum is located. For example, in the 2.4 GHz free spectrum, the SIFS value on the 20 MHz channel is 10 microseconds, and in the 5 GHz spectrum, the SIFS is taken on the 20 MHz channel. The value is 16 microseconds.

Optionally, each frame of the awake interface frame sequence includes first indication information, where the first indication information takes a first value, indicating that the control device sends a frame subsequently, and the first indication information takes a second value to indicate the control device. Subsequent not sending frames, where

Optionally, the first indication information included in each frame of the wake-up interface frame sequence may be one bit at the same position of each frame, or may be according to a format of different frames in the wake-up interface frame sequence. The first indication information is set at a different location.

Optionally, the first value may be 1, and the second value may be 0.

Optionally, the control device assigns the first indication information included in each frame in the wake-up interface frame sequence to indicate whether to subsequently send subsequent frames.

For example, the control device assigns a first value to the first frame in the wake-up interface frame sequence, and after receiving the first frame, the station device can learn that the control device further sends the frame after the first frame, and the site device continues. Listening to the channel to receive the subsequent frame, and the control device assigns a second value to the first frame in the wake-up interface frame sequence, after receiving the first frame, the station device can learn that the device is controlled after the first frame Frames are not sent, at which point the site device can end channel listening to reduce power consumption.

It should be understood that each frame in the wake-up interface frame sequence has a preamble as the start of a frame, and the wake-up receiver WUR first discovers the preamble of each frame when listening, and finds that such a preamble determines a frame. The beginning, then, begins to receive the content contained in these frames.

Optionally, the first frame in the wake-up interface frame sequence includes a first preamble, and each frame after the first frame in the wake-up interface frame sequence includes a second preamble, the second preamble being smaller than the first preamble short.

It should be understood that the second preamble is shorter than the first preamble and the station device can more accurately determine the beginning of the first frame.

For example, as shown in FIG. 4, the first frame in the wake-up interface frame sequence is the beacon frame WB, the second frame is the wake-up frame WUP1, the third frame is the wake-up frame WUP2, and the leading of the first frame is the first A preamble, the preamble of the second frame and the third frame are both a second preamble, and the second preamble is shorter than the first preamble.

Optionally, the method 200 after competing for the wireless channel and before transmitting the wake-up interface frame sequence Also includes:

The control device sends a primary communication interface signaling, where the primary communication interface signaling includes a time when the control device sends the primary communication interface signaling to the wireless channel occupied by the last frame in the sequence of the wake-up interface frames. Length information. Optionally, after receiving the primary communication interface signaling sent by the site device, the site device determines that the occupied wireless channel is not used by the primary communication interface within a time period indicated by the time length information.

It should be understood that the control device transmits the primary communication interface signaling to each of the plurality of site devices.

For example, as shown in FIG. 5, the primary communication interface signaling includes transmitting the primary communication interface signaling, the first preamble, the first frame, the two second preambles, the second frame, the third frame, and two WIFS offices. The length of time information of the occupied wireless channel.

Therefore, it can be ensured that the control device continuously occupies the wireless channel when it needs to transmit a frame.

230. The site device starts listening to the wireless channel before the first time window starting at the first preset time point.

It should be understood that, because there may be a clock drift between the control device and the site device, the wakeup time point determined by the WUR of the site device according to its own clock may not be the same time point as the first preset time point, therefore, the site The wake-up receiver WUR of the device must ensure that it wakes up before the first preset time point to receive the control device to send the frame in the wake-up interface frame sequence, and further, to ensure that each frame sent by the control device is received.

It should also be understood that the wake-up receiver of the site device is in a dormant state when it does not need to receive a wake-up frame.

240. The station device receives a first frame from a control device by using a wake-up receiver, where the first frame is a beacon frame or a wake-up frame, and the frame received by the station device after the first frame by the wake-up receiver is a wake-up frame. Each wake-up frame received by the site device through the wake-up receiver includes a wake-up interface identifier, and each wake-up frame is used to wake up the main communication interface of the site device where the wake-up receiver is located corresponding to the wake-up interface identifier.

250. If the first frame is a wake-up frame and the wake-up interface identifier included in the first frame is an identifier of the wake-up receiver of the site device, after receiving the first frame, the site device stops listening to the channel; or

If the first frame is a beacon frame or the first frame is a wake-up frame and the wake-up interface included in the first frame identifies an identifier of a wake-up receiver that is not the station device, after receiving the first frame, the The site device listens to the wireless channel for the first time frame to receive the subsequent second frame.

It should be understood that the site device receives the second frame by waking up the receiver.

Optionally, the first duration includes a wake-up interface frame interval WIFS and a transmission time of a preamble of the second frame to be received, where the WIFS is the end of the previous frame of the two adjacent frames transmitted through the wake-up interface. The interval between the start of a frame.

Optionally, the first duration may be a Next Frame Confirmation Time (NFCT).

For example, as shown in FIG. 5, the first duration may include a transmission time of the WIFS and the second preamble.

Optionally, the first duration may also be greater than the duration of the NFCT. For example, the first duration can be at least one NFCT.

Optionally, if the first frame is a beacon frame or the first frame is a wake-up frame, and the wake-up interface included in the first frame identifies an identifier of a wake-up receiver that is not the site device, after receiving the first After the frame, the station device listens to the wireless channel for a subsequent second frame for a time range greater than the first duration.

Optionally, when the site device does not hear the signal of the second frame within the first duration, the site device stops listening to the wireless channel; or

When the station device detects the presence of the second frame signal within the first time period, completes receiving the second frame, and if the second frame includes the identifier of the wake-up receiver of the site device, the site device wakes up the Primary communication of the site device Interface and stop listening to the wireless channel; or

Optionally, the station device receives the subsequent frame by waking up the receiver when it is determined that there is a subsequent frame.

Optionally, when the first frame includes the first indication information, after receiving the first frame, the station device may determine, according to the value of the first indication information included in the first frame, whether The wireless channel is intercepted within the first duration after receiving the first frame. Optionally, when the first indication information takes the first value, the station device continues to listen to the wireless channel within the first duration after receiving the first frame, where the first indication information takes a second value. When the station device stops listening to the wireless channel after receiving the first frame.

Optionally, the station device includes the first indication information by using each frame received by the wake-up receiver, and the site device may obtain the first indication information included in the frame after receiving the frame every time. The value determines if there are subsequent frames after this frame, and immediately stops listening to the channel when it is determined that there are no subsequent frames.

Optionally, as an embodiment, as shown in FIG. 6, the AP sends the wake-up interface frame sequence by broadcast, and WUR1, WUR2, and WUR3 wake up to receive the wake-up interface frame sequence.

In the first period (the duration between the first preset time point and the second preset time point), the AP transmits the beacon frame WB in the first time window starting from the first preset time point, at this time, The wake-up interface frame sequence includes WB. WUR1, WUR2, and WUR3 wake up before the first preset time point, continue to listen for at least one NFCT duration after WUR1, WUR2, and WUR3 receive WB, and stop listening after WUR1, WUR2, and WUR3 pass after at least one NFCT Wireless channel.

During the second period (the duration between the second preset time point and the third preset time point), the AP transmits WB, WUP1, and WUP2 in the first time window starting at the second preset time point, at this time, The wake-up interface frame sequence includes WB, WUP1, and WUP2. WUR1, WUR2, and WUR3 wake up before the second preset time. After WUR1 receives WUP1 and finds that it is sent to itself, it can immediately end the wakeup window to save power and wake up its main communication module, while WUR2 and WUR3 Continue to listen to at least one NFCT time. When WUR2 receives WUP2 and finds that it is sent to itself, it can immediately end the wakeup window to save power and wake up its main communication module. WUR3 will continue to listen to at least one NFCT time and determine no follow-up. WUP also ends the wake-up window.

It should be understood that the control device AP may not be limited by the first time window when transmitting the frame in the wake-up interface frame sequence, that is, after competing for the wireless channel, the control device may continue to send after the end of the first time window. The frame that needs to be sent.

For example, the control device contends to the channel at the end of the first time window. At this time, the control device sends the wake-up interface frame sequence that needs to be sent, and does not give up the sending of the wake-up interface frame because the first time window ends. sequence.

It should be understood that the wake-up receiver of the station device determines that there is a WUR frame whenever it hears the preamble of the WUR frame (the first preamble or the second preamble), and should complete the WUR frame, but not because of the predetermined wake-up. When the window time is up, it will not receive the subsequent part of the WUR frame, and if it is not sent to its own WUP after receiving a WUR frame, it must end the wake-up window without confirming that there are no subsequent frames.

FIG. 7 is a schematic flowchart of a method 300 for wireless wake-up according to the present application. As shown in FIG. 7, the method 300 includes the following.

310. The control device contends for the wireless channel in a first time window starting at a first preset time point.

320. After competing to the wireless channel, the control device sends a wake-up interface frame sequence, where the first frame in the wake-up interface frame sequence is a beacon frame or a wake-up frame, after the first frame in the wake-up interface frame sequence The frame is a wake-up frame, and each wake-up frame in the wake-up interface frame sequence includes a wake-up interface identifier, and each wake-up frame is used to wake up the wake-up interface identifier included in each wake-up frame identifier corresponding to the site device where the wake-up receiver is located a primary communication interface, each frame of the wake-up interface frame sequence includes first indication information, where the first indication information takes a first value to indicate that the control device subsequently sends a frame, and the first indication information takes a second value to indicate the control device Subsequent not sending frames;

Optionally, the control device releases the competing wireless channel after each frame is sent.

Optionally, in addition to the last frame in the wake-up interface frame sequence, the control device competes for the wireless channel in a second time window in which the transmission end time point of each transmitted transmission is the start time point, and After competing for the wireless channel, a subsequent frame of the transmitted completed frame is transmitted.

For example, as shown in FIG. 8, the control device transmits the first frame in the first time window starting from the first preset time point, and the first frame is not the last frame in the wake-up interface frame sequence, and the control device The transmission end time point of the first frame is a contending wireless channel in a second time window of the start time point, and after competing for the wireless channel, the frame after the first frame is transmitted, that is, the WUP1 as shown in FIG. .

It should be understood that, after the control device sends the first frame, it is independent of the first time window, and the control device competes for the wireless channel in the second time window starting from the transmission end time point of the first frame. And after competing for the wireless channel, the frame after the first frame is transmitted. There is no necessary connection between the first time window and the second time window.

Optionally, the control device sends the first frame, and when the first indication information included in the first frame indicates that a subsequent frame exists after the first frame, the control device transmits the first frame The end time point is a start time point, and the subsequent frame is sent after the first frame interval, and the first frame interval is less than or equal to the short frame interval SIFS of the primary communication interface.

Optionally, the control device sends a third frame, where the third frame may be any one of the wake-up interface frame sequences, and the first indication information included in the third frame indicates that the third frame exists after the third frame In the subsequent frame, the control device sends a subsequent frame after the first frame interval is separated by the transmission end time point of the third frame, and the first frame interval is less than or equal to the short frame interval SIFS of the primary communication interface. .

330. The station device starts listening to the wireless channel before the first time window starting at the first preset time point.

340. The site device receives a first frame from the control device by using a wake-up receiver, where the first frame is a beacon frame or a wake-up frame, and the frame received by the station device after the first frame by the wake-up receiver is a wake-up frame. Each wake-up frame received by the site device includes a wake-up interface identifier, and the wake-up interface identifier is used to wake up the main communication interface of the site device where the wake-up receiver is located corresponding to the wake-up interface identifier included in each wake-up frame. All the frames received by the site device through the awake interface device include first indication information, where the first indication information takes a first value to indicate that the control device sends a frame subsequently, and the first indication information takes a second value to indicate that the control device subsequently Do not send frames.

350. If the first frame is a wake-up frame and the wake-up interface identifier included in the first frame is an identifier of the wake-up receiver of the site device, the site device wakes up the primary communication interface of the site device, and stops listening. The wireless channel; or

If the first frame is a beacon frame or the first frame is a wake-up frame and the wake-up interface included in the first frame identifies a wake-up interface identifier that is not the site device, the site device includes the first frame according to the The first indication information determines whether Continue to listen to the wireless channel.

Optionally, as an embodiment, as shown in FIG. 9, the AP sends the wake-up interface frame sequence by broadcast, and WUR1, WUR2, and WUR3 wake up to receive the wake-up interface frame sequence.

In the first period (the duration between the first preset time point and the second preset time point), the AP transmits the beacon frame WB in the first time window starting from the first preset time point, at this time The wake-up interface frame sequence includes a WB, and the first indication information included in the WB takes a second value (eg, 0). WUR1, WUR2, and WUR3 are awake before the first preset time point. After receiving the WB, the WUR1, WUR2, and WUR3 determine that the AP does not send subsequent frames according to the value of the first indication information included in the WB. Therefore, after receiving the WB, WUR1, WUR2, and WUR3 stop listening to the wireless channel.

During the second period (the duration between the second preset time point and the third preset time point), the AP transmits WB, WUP1, and WUP2 in the first time window starting at the second preset time point. The awake interface frame sequence includes WB, WUP1, and WUP2, and the first indication information included in the WB takes a first value (for example, 1), and the first indication information included in the WUP1 takes a first value (for example, 1) The first indication information included in the WUP2 takes a second value (for example, 0). WUR1, WUR2, and WUR3 wake up before the second preset time point. After receiving the WB, WUR1, WUR2, and WUR3 should continue to listen to the channel for at least one NFCT time. After receiving WUP1, WUR1 finds that it is sent to itself. , you can immediately end the wake-up window to save power and wake up its main communication module, while WUR2 and WUR3 continue to listen to at least one NFCT time, WUR2 receives WUP2, and finds that it is sent to itself, you can immediately end the wake-up window to save The power and wake up its main communication module. At this time, WUR3 can determine that there is no subsequent WUP frame, so the wakeup window is immediately ended.

Optionally, after the first WUR frame, such as a WB frame or a WUP frame, is heard by a WUR, if the first indication information indicates that there is a subsequent WUP frame, but after the NFCT time after the first WUR frame is received, The second WUR frame, that is, the preamble of the subsequent WUP frame, is not heard, and can be immediately hibernated to save power, because the second frame is indicated in the first frame but the second frame is not heard, indicating that the channel has been interfered, and the subsequent WUR frame is also It is very likely that it is disturbed. However, it is also possible to continue listening until the NFCT time is added after the length of one WIFS and the second WUR frame from the end of the first WUR frame. If the preamble of the third WUR frame cannot be heard, the interception can be stopped. Power saving, if the preamble of the third WUR frame is heard, the third WUR frame is received, so that all WUR frames that may exist subsequently are missed because the second WUR frame is not received.

FIG. 10 shows a schematic block diagram of a control device 400 provided by an embodiment of the present application. The control device 400 has a wake-up transmitter 410 and a main communication interface transceiver 420, a central processing unit 430, a memory 440, and an antenna 450. The main communication interface transceiver 420 is configured to send the initial part of the traditional WiFi frame before the wake-up interface frame, that is, the main communication interface signaling and the preamble of the traditional WiFi frame in the embodiment of the present application (L-STF, L-LTF) In part, the primary communication interface signaling may include the signaling L-SIG portion of the legacy WiFi frame. The wake-up transmitter 410 is configured to transmit a wake-up interface frame. Wake-up transmitter 410 may be the transmit portion of primary communication interface transceiver 420, ie, primary communication interface transceiver 420 may be used to transmit wake-up interface frames. The wake-up transmitter 410 and the main communication interface transceiver 420 may share the antenna 450, or may use different antennas (not shown). The central processing unit 430 and the wake-up transmitter 410, the main communication interface transceiver 420, and the memory 440 are connected by a bus to implement data exchange. The wake-up transmitter 410 and the main communication interface transceiver 420 implement the wireless wake-up method on the control device side described in the present application by a program running on the central processing unit 430 or by itself.

FIG. 11 is a schematic block diagram of a site device 500 provided by an embodiment of the present application. The site device 500 has a wake-up receiver WUR 510 and a main communication interface transceiver 520, a central processing unit 530, and a memory 540. And an antenna 550. The WUR 510 and the primary communication interface transceiver 520 may share the antenna 550 or may use different antennas (not shown). The central processing unit 530 and the WUR 510, the main communication interface transceiver 520, and the memory 540 are connected by a bus to implement data exchange. A clock synchronization module 511 can also be included in the WUR 510. The clock synchronization module 511 adjusts its own clock according to the time information carried in the synchronization frame (for example, the WB frame) sent by the control device AP received by the WUR, and according to its own local time information and the received synchronization before adjusting its own clock. The time information in the frame calculates the amount of drift of the clock relative to the AP to determine the amount of delay of the WUR's wake window relative to the start time of the first time window of the AP and the end time of the first time window. The WUR 510 wakes up the primary communication interface transceiver 520 via interface 560 after receiving the wake-up frame for itself. The WUR 510 implements the wireless wake-up method on the site device side of the present application by a program running on the central processing unit 530 or by itself.

The embodiment of the present application further provides a computer storage medium, which can store program instructions for indicating any of the above methods.

Optionally, the storage medium may be the memory 540 in the control device 400 in FIG. 10 or the memory 540 in the site device 500 in FIG.

Illustratively, the control device of Figures 2-9 stores one or more software modules in the memory. The control device can implement the wireless module through the processor and the program code in the memory to implement wireless communication.

Illustratively, the site devices of Figures 2-9 have one or more software modules stored in the memory. The site device can implement the wireless module through the processor and the program code in the memory to implement wireless communication.

FIG. 12 is a schematic block diagram of a control device 600 in accordance with an embodiment of the present application. As shown in FIG. 12, the control device 600 includes:

The processing unit 610 is configured to compete for a wireless channel in a first time window starting at a first preset time point;

The sending unit 620 is configured to send, after competing for the wireless channel, a wake-up interface frame sequence, where the first frame in the wake-up interface frame sequence is a beacon frame or a wake-up frame, after the first frame in the wake-up interface frame sequence The frame is a wake-up frame, and each wake-up frame in the wake-up interface frame sequence includes a wake-up interface identifier, and each wake-up frame is used to wake up the wake-up interface identifier included in each wake-up frame to identify a corresponding station device where the wake-up receiver is located Main communication interface;

Optionally, before the sending unit sends the wake-up interface frame sequence, the sending unit 620 is further configured to send the primary communication interface signaling, where the primary communication interface signaling includes the control device sending the primary communication interface Signaling to the time length information of the wireless channel occupied by the last frame in the sequence of wake-up interface frames.

The control device 600 of the embodiment of the present application may correspond to the control device of the method embodiment shown in FIG. 2 to FIG. 9 above. And each module or unit in the control device 600 is used to execute a corresponding process performed by the control device in the above method embodiment. For the sake of brevity, it will not be repeated here.

It should be understood that in the present embodiment, the control device 600 is presented in the form of a functional module. A "module" herein may refer to an application-specific integrated circuit (ASIC), circuitry, a processor and memory that executes one or more software or firmware programs, integrated logic circuitry, and/or other functions that may provide the functionality described above. Device. In another embodiment, those skilled in the art will appreciate that control device 600 can take the form shown in FIG. Processing unit 610 can be implemented by central processor 430 and memory 440 shown in FIG. The transmitting unit 620 can be implemented by the wake-up transmitter 410, the main communication interface transceiver 420, and the antenna 450 shown in FIG. In particular, the processor is implemented by executing a computer program stored in a memory.

FIG. 13 is a schematic block diagram of a site device 700 in accordance with an embodiment of the present application. As shown in FIG. 13, the site device 700 includes:

The processing unit 710 is configured to start listening to the wireless channel before the first time window starting at the first preset time point;

The receiving unit 720 is configured to receive, by using a wake-up receiver, a first frame, where the first frame is a beacon frame or a wake-up frame, and the receiving unit 720 receives, by using the wake-up receiver, a frame that is received after the first frame. Wake-up frame, each wake-up frame received by the receiving unit 720 through the wake-up receiver includes a wake-up interface identifier, and the wake-up interface identifier is used to wake up the main communication interface of the site device where the wake-up receiver is located corresponding to the wake-up interface identifier ;

If the first frame is a wake-up frame and the wake-up interface identifier included in the first frame is an identifier of the wake-up receiver of the site device, after the receiving unit 720 receives the first frame, the processing unit 710 stops detecting Listen to the channel; or

If the first frame is a beacon frame or the first frame is a wake-up frame and the wake-up interface included in the first frame identifies an identifier of the wake-up receiver that is not the site device, the receiving unit 720 receives the first After the frame, the processing unit 710 listens to the wireless channel for receiving the subsequent second frame within the first duration;

Optionally, if the first frame is a beacon frame or the first frame is a wake-up frame and the wake-up interface included in the first frame identifies an identifier of a wake-up receiver that is not the site device, at the receiving unit 720. After receiving the first frame, the processing unit 710 listens to the wireless channel for receiving the second frame in the first time period, including:

When the processing unit 710 does not hear the signal of the second frame within the first duration, the processing unit 710 stops listening to the wireless channel; or

When the processing unit 710 detects the presence of the signal of the second frame within the first duration, and completes receiving the second frame, if the second frame includes the identifier of the wake-up receiver of the site device, the processing unit 710 Wake up the primary communication interface of the site device and stop listening to the wireless channel; or

After the processing unit 710 receives the subsequent second frame within the first duration, and the second frame does not include the identifier of the wake-up receiver of the site device, the processing unit 710 after receiving the second frame The wireless channel continues to listen for the first time period to determine if there are subsequent frames.

Optionally, the first frame received by the processing unit 710 by the wake-up receiver, and the frame received after the first frame, includes first indication information, where the first indication information takes a first value indicating that the control device subsequently Sending a frame, where the first indication information takes a second value, indicating that the control device does not send the frame subsequently;

After the receiving unit 720 receives the first frame, and the processing unit 710 starts within the first time period Before the wireless channel is intercepted, the processing unit 710 is further configured to determine, according to the first indication message included in the first frame, whether to listen to the wireless channel within the first duration after receiving the first frame.

Optionally, before the receiving unit 720 receives the first frame from the control device by using the wake-up receiver, the receiving unit 720 is further configured to receive, by the control device, a primary communication interface signaling, the primary communication interface signaling Including the time length information that the control device sends the signaling of the primary communication interface to the wireless channel occupied by the first frame or the last wake-up frame;

The processing unit 710 is further configured to determine that the occupied wireless channel is not used by the primary communication interface within a time period indicated by the time length information.

The site device 700 of the embodiment of the present application may correspond to the site device of the method embodiment shown in FIG. 2 to FIG. 9 above. And each module or unit in the site device 700 is used to perform a corresponding process performed by the site device in the foregoing method embodiment. For the sake of brevity, it will not be repeated here.

It should be understood that in the present embodiment, the site device 700 is presented in the form of functional modules. A "module" herein may refer to an application-specific integrated circuit (ASIC), circuitry, a processor and memory that executes one or more software or firmware programs, integrated logic circuitry, and/or other functions that may provide the functionality described above. Device. In another embodiment, those skilled in the art will appreciate that the site device 700 can take the form shown in FIG. Processing unit 710 can be implemented by central processor 530 and memory 540 shown in FIG. The receiving unit 720 can be implemented by the wake-up receiver WUR 510 and the main communication interface transceiver 520 shown in FIG. 11, and the antenna 550. In particular, the processor is implemented by executing a computer program stored in a memory.

FIG. 14 is a schematic block diagram of a control device 800 in accordance with an embodiment of the present application. As shown in FIG. 14, the control device 800 includes:

The processing unit 810 is configured to compete for a wireless channel in a first time window starting at a first preset time point;

The sending unit 820 is configured to send, after competing for the wireless channel, a wake-up interface frame sequence, where the first frame in the wake-up interface frame sequence is a beacon frame or a wake-up frame, after the first frame in the wake-up interface frame sequence The frame is a wake-up frame, and each wake-up frame in the wake-up interface frame sequence includes a wake-up interface identifier, and each wake-up frame is used to wake up the wake-up interface identifier included in each wake-up frame to identify a corresponding station device where the wake-up receiver is located a primary communication interface, each frame of the wake-up interface frame sequence includes first indication information, the first indication information taking a first value indicating that the control device subsequently transmits a frame, and the first indication information takes a second value indicating the control The device does not send frames subsequently;

Optionally, in addition to the last frame in the wake-up interface frame sequence, the processing unit 810 competes for the wireless channel in a second time window in which the transmission end time point of each transmitted frame is the start time point. And after competing for the wireless channel, the transmitting unit 820 transmits a subsequent frame of the frame in which the transmission is completed.

Optionally, the sending unit 820 sends the first frame.

When the first indication information included in the first frame indicates that there is a subsequent frame after the first frame, the sending unit 820 intervals the first frame by using a transmission end time point of the first frame as a starting time point. A subsequent frame is transmitted after the interval, the first frame interval being less than or equal to the short frame interval SIFS of the primary communication interface.

The control device 800 of the embodiment of the present application may correspond to the control device of the method embodiment shown in FIG. 2 to FIG. 9 above. And each module or unit in the control device 800 is used to execute a corresponding process performed by the control device in the above method embodiment. For the sake of brevity, it will not be repeated here.

It should be understood that in the present embodiment, control device 800 is presented in the form of a functional module. Here's the "module" May be referred to as application-specific integrated circuits (ASICs), circuits, processors and memories that execute one or more software or firmware programs, integrated logic circuits, and/or other devices that can provide the functions described above. In another embodiment, those skilled in the art will appreciate that control device 800 can take the form shown in FIG. Processing unit 810 can be implemented by central processor 430 and memory 440 shown in FIG. The transmitting unit 820 can be implemented by the wake-up transmitter 410, the main communication interface transceiver 420, and the antenna 450 shown in FIG. In particular, the processor is implemented by executing a computer program stored in a memory.

FIG. 15 is a schematic block diagram of a site device 900 in accordance with an embodiment of the present application. As shown in FIG. 15, the site device 900 includes:

The processing unit 910 is configured to start listening to the wireless channel before the first time window starting at the first preset time point;

The receiving unit 920 is configured to receive, by using a wake-up receiver, a first frame, where the first frame is a beacon frame or a wake-up frame, and the receiving unit 920 receives, by using the wake-up receiver, a frame that is received after the first frame. a wake-up frame, each of the wake-up frames received by the receiving unit 920 includes a wake-up interface identifier, and the wake-up frame is used to wake up the wake-up interface identifier included in each wake-up frame to identify a site device where the wake-up receiver is located a main communication interface, wherein all the frames received by the receiving unit 920 through the awake interface device include first indication information, where the first indication information takes a first value to indicate that the control device subsequently sends a frame, and the first indication information takes a second value indication The control device does not subsequently send frames;

If the first frame is a wake-up frame and the wake-up interface identifier included in the first frame is an identifier of the wake-up receiver of the site device, the processing unit 910 wakes up the primary communication interface of the site device, and stops listening to the Wireless channel; or

If the first frame is a beacon frame or the first frame is a wake-up frame and the wake-up interface included in the first frame identifies a wake-up interface identifier that is not the site device, the processing unit 910 is included according to the first frame. The first indication information determines whether to continue listening to the wireless channel.

Optionally, before the receiving unit 920 receives the first frame from the control device by using the wake-up receiver, the receiving unit 920 is further configured to receive, by the control device, primary communication interface signaling, the primary communication interface signaling. Including the time length information that the control device sends the signaling of the primary communication interface to the wireless channel occupied by the first frame or the last wake-up frame;

The processing unit 910 is further configured to determine that the occupied wireless channel is not used by the primary communication interface within a time period indicated by the time length information.

The site device 900 of the embodiment of the present application may correspond to the site device of the method embodiment shown in FIG. 2 to FIG. 9 above. And each module or unit in the site device 900 is used to perform a corresponding process performed by the site device in the foregoing method embodiment. For the sake of brevity, it will not be repeated here.

It should be understood that in the present embodiment, the site device 900 is presented in the form of functional modules. A "module" herein may refer to an application-specific integrated circuit (ASIC), circuitry, a processor and memory that executes one or more software or firmware programs, integrated logic circuitry, and/or other functions that may provide the functionality described above. Device. In another embodiment, those skilled in the art will appreciate that the site device 900 can take the form shown in FIG. The processing unit 910 can be implemented by the central processing unit 530 and the memory 530 shown in FIG. The receiving unit 920 can be implemented by the wake-up receiver WUR 510 and the main communication interface transceiver 520 shown in FIG. 11, and the antenna 550. In particular, the processor is implemented by executing a computer program stored in a memory.

Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware or a combination of computer software and electronic hardware. These functional studies Whether it is implemented in hardware or software depends on the specific application and design constraints of the technical solution. A person skilled in the art can use different methods to implement the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present application.

A person skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or may be Integrate into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present application are generated in whole or in part. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be wired from a website site, computer, server or data center (for example, coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (eg, infrared, wireless, microwave, etc.) transmission to another website site, computer, server or data center. The computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that includes one or more available media. The usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (such as a solid state disk (SSD)).

The above is only a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present application. It is covered by the scope of protection of this application. Therefore, the scope of protection of this application is subject to the scope of protection of the claims.

Claims

A method for wireless wake-up, characterized in that it comprises:

The control device contends for the wireless channel within a first time window starting at a first preset time point;

After competing for the wireless channel, the control device sends a wake-up interface frame sequence, where the first frame in the wake-up interface frame sequence is a beacon frame or a wake-up frame, and the first one in the wake-up interface frame sequence The frame after the frame is a wake-up frame, and each wake-up frame in the wake-up interface frame sequence includes a wake-up interface identifier, where each wake-up frame is used to wake up the wake-up interface identifier corresponding to each wake-up frame corresponding to the wake-up The main communication interface of the site device where the receiver is located;

The interval WIFS between the end of the previous frame and the start of the next frame in the adjacent two frames in the wake-up interface frame sequence is less than or equal to the short frame interval SIFS of the primary communication interface, so that the site device can The WIFS determines whether there is a subsequent frame after receiving one frame in the wake-up interface frame sequence.
The method according to claim 1, wherein each frame in the wake-up interface frame sequence includes first indication information, and the first indication information takes a first value to indicate that the control device subsequently transmits a frame. The first indication information takes a second value, indicating that the control device does not send a frame subsequently, where

The first indication information in the frame other than the last frame in the wake-up interface frame sequence takes the first value, and the first indication information in the last frame in the wake-up interface frame sequence is taken Said the second value.
The method according to claim 1 or 2, wherein the first frame in the wake-up interface frame sequence comprises a first preamble, each of the first frame after the wake-up interface frame sequence The frame includes a second preamble that is shorter than the first preamble.
The method according to any one of claims 1 to 3, wherein before the sending of the wake-up interface frame sequence, the method further comprises:

The control device sends a primary communication interface signaling, where the primary communication interface signaling includes the control device transmitting the signaling of the primary communication interface to the last frame in the sequence of the awake interface frames The length of time information of the occupied wireless channel.
A method for wireless wake-up, characterized in that it comprises:

The station device starts to listen to the wireless channel before the first time window starting at the first preset time point;

Receiving, by the wake-up receiver, the first frame from the control device by using a wake-up receiver, where the first frame is a beacon frame or a wake-up frame, and the frame device receives the frame after the first frame by the wake-up receiver For a wake-up frame, each wake-up frame received by the site device through the wake-up receiver includes a wake-up interface identifier, and each wake-up frame is used to wake up the wake-up interface identifier corresponding to the site device where the wake-up receiver is located Main communication interface;

If the first frame is a wake-up frame and the wake-up interface identifier included in the first frame is an identifier of the wake-up receiver of the site device, after receiving the first frame, the site device stops detecting Listen to the channel; or

If the first frame is a beacon frame or the first frame is a wake-up frame and the wake-up interface included in the first frame identifies an identifier of a wake-up receiver that is not the site device, after receiving the After one frame, the station device listens to the wireless channel for receiving a subsequent second frame within a first time period;

The first duration includes a wake-up interface frame interval WIFS and a transmission time of a preamble of the second frame to be received, where the WIFS is an end of a previous frame of two adjacent frames transmitted through the wake-up interface. The interval between the start of the next frame; the WIFS is less than or equal to the short frame interval SIFS of the primary communication interface.
The method according to claim 5, wherein if the first frame is a beacon frame or the first frame is a wake-up frame and the wake-up interface included in the first frame identifies a non-the site Identification of the device's wake-up receiver At the time of receiving the first frame, the station device listens to the wireless channel for receiving the second frame in the first time period, including:

The site device stops listening to the wireless channel when the site device does not hear the signal of the second frame within the first duration; or

When the station device detects the presence of the signal of the second frame within the first duration, completing receiving the second frame, if the second frame includes the identifier of the wake-up receiver of the site device The site device wakes up the primary communication interface of the site device and stops listening to the wireless channel; or

After the site device receives the subsequent second frame within the first duration, and the second frame does not include the identifier of the wake-up receiver of the site device, the site device is receiving the location The wireless channel continues to be listened to for the first time period after the second frame to determine whether there is a subsequent frame.
The method according to claim 5 or 6, wherein the first frame received by the station device through the wake-up receiver and the frame received after the first frame comprise first indication information, The first indication information takes a first value to indicate that the control device sends a frame subsequently, and the first indication information takes a second value to indicate that the control device does not send a frame subsequently;

After receiving the first frame, and before starting to listen to the wireless channel within the first duration, the method further includes:

Determining, by the station device, whether to listen to the wireless channel within the first duration after receiving the first frame according to the first indication message included in the first frame.
The method according to any one of claims 5 to 7, wherein before the station device receives the first frame from the control device by the wake-up receiver, the method further comprises:

The site device receives primary communication interface signaling from the control device, the primary communication interface signaling includes the control device transmitting signaling of the primary communication interface until the first frame or the last wake-up is sent Time length information of the wireless channel occupied by the frame;

The site device determines not to use the occupied wireless channel by the primary communication interface during the time period indicated by the time length information.
A method for wireless wake-up, characterized in that it comprises:

The control device contends for the wireless channel within a first time window starting at a first preset time point;

After competing for the wireless channel, the control device sends a wake-up interface frame sequence, where the first frame in the wake-up interface frame sequence is a beacon frame or a wake-up frame, and the first one in the wake-up interface frame sequence The frame after the frame is a wake-up frame, and each wake-up frame in the wake-up interface frame sequence includes a wake-up interface identifier, where each wake-up frame is used to wake up the wake-up interface identifier corresponding to each wake-up frame corresponding to the wake-up a primary communication interface of the site device where the receiver is located, each frame of the wake-up interface frame sequence includes first indication information, and the first indication information takes a first value to indicate that the control device subsequently sends a frame, where the Taking a second value of the indication information indicates that the control device does not subsequently send the frame;

The first indication information included in the frame other than the last frame in the wake-up interface frame sequence takes a first value, and the first frame included in the last frame in the wake-up interface frame sequence The indication information takes the second value.
The method according to claim 9, wherein the control device sends a wake-up interface frame sequence, including:

Except for the last frame in the wake-up interface frame sequence, the control device contends for the wireless channel in a second time window in which the transmission end time point of each transmitted transmission is the start time point, and Compete to the none After the line channel, a subsequent frame of the frame in which the transmission is completed is transmitted.
The method according to claim 9, wherein the control device sends a wake-up interface frame sequence, including:

The control device sends the first frame;

When the first indication information included in the first frame indicates that there is a subsequent frame after the first frame, the control device starts at a time point of ending the transmission of the first frame, The subsequent frame is transmitted after the first frame interval, and the first frame interval is less than or equal to the short frame interval SIFS of the primary communication interface.
A method for wireless wake-up, characterized in that it comprises:

The station device starts to listen to the wireless channel before the first time window starting at the first preset time point;

Receiving, by the wake-up receiver, the first frame from the control device by using a wake-up receiver, where the first frame is a beacon frame or a wake-up frame, and the frame device receives the frame after the first frame by the wake-up receiver For the wake-up frame, each wake-up frame received by the site device includes a wake-up interface identifier, and each wake-up frame is used to wake up the wake-up receiver corresponding to the wake-up interface identifier included in each wake-up frame. a main communication interface of the site device, where all the frames received by the site device through the awake interface device include first indication information, where the first indication information takes a first value to indicate that the control device subsequently sends a frame, where the Taking a second value of the indication information indicates that the control device does not subsequently send the frame;

If the first frame is a wake-up frame and the wake-up interface identifier included in the first frame is an identifier of the wake-up receiver of the site device, the site device wakes up the primary communication interface of the site device, And stop listening to the wireless channel; or

If the first frame is a beacon frame or the first frame is a wake-up frame and the wake-up interface included in the first frame identifies a wake-up interface identifier that is not the site device, the site device is configured according to the The first indication information included in one frame determines whether to continue to listen to the wireless channel.
The method of claim 12, wherein the method further comprises: before the site device receives the first frame from the control device by the wake-up receiver, the method further comprising:

The site device receives primary communication interface signaling from the control device, the primary communication interface signaling includes the control device transmitting signaling of the primary communication interface until the first frame or the last wake-up is sent Time length information of the wireless channel occupied by the frame;

The site device determines not to use the occupied wireless channel by the primary communication interface during the time period indicated by the time length information.
A control device, comprising:

a processing unit, configured to compete for a wireless channel in a first time window starting at a first preset time point;

a sending unit, configured to send a wake-up interface frame sequence after competing to the wireless channel, where the first frame in the wake-up interface frame sequence is a beacon frame or a wake-up frame, where the The frame after one frame is a wake-up frame, and each wake-up frame in the wake-up interface frame sequence includes a wake-up interface identifier, and each of the wake-up frames is used to wake up the wake-up interface identifier included in each of the wake-up frames. Wake up the main communication interface of the site device where the receiver is located;

The interval WIFS between the end of the previous frame and the start of the next frame in the adjacent two frames in the wake-up interface frame sequence is less than or equal to the short frame interval SIFS of the primary communication interface, so that the site device can The WIFS determines whether there is a subsequent frame after receiving one frame in the wake-up interface frame sequence.
The control device according to claim 14, wherein each of said wake-up interface frame sequences The frame includes a first indication information, where the first indication information takes a first value to indicate that the control device sends a frame subsequently, and the first indication information takes a second value to indicate that the control device does not subsequently send a frame, where

The first indication information in the frame other than the last frame in the wake-up interface frame sequence takes the first value, and the first indication information in the last frame in the wake-up interface frame sequence is taken Said the second value.
The control device according to claim 14 or 15, wherein the first frame in the wake-up interface frame sequence includes a first preamble, and each of the first frames in the wake-up interface frame sequence The frames include a second preamble that is shorter than the first preamble.
The control device according to any one of claims 14 to 16, wherein the transmitting unit is further configured to send a main communication interface signaling, before the transmitting unit sends the awake interface frame sequence, where The primary communication interface signaling includes time length information of the wireless channel occupied by the control device after transmitting the signaling of the primary communication interface to the last frame in the sequence of the wake-up interface frames.
A site device, comprising:

a processing unit, configured to start listening to the wireless channel before the first time window starting at the first preset time point;

a receiving unit, configured to receive, by using a wake-up receiver, a first frame, where the first frame is a beacon frame or a wake-up frame, and the receiving unit receives the first frame after the first frame by using the wake-up receiver The frame is a wake-up frame, and each of the wake-up frames received by the receiving unit by the wake-up receiver includes a wake-up interface identifier, and each wake-up frame is used to wake up the wake-up interface identifier corresponding to the site where the wake-up receiver is located The main communication interface of the device;

If the first frame is a wake-up frame and the wake-up interface identifier included in the first frame is an identifier of the wake-up receiver of the site device, after the receiving unit receives the first frame, the The processing unit stops listening to the channel; or

Receiving at the receiving unit if the first frame is a beacon frame or the first frame is a wake-up frame and the wake-up interface included in the first frame identifies an identifier of a wake-up receiver that is not the station device After completing the first frame, the processing unit listens to the wireless channel for receiving a subsequent second frame within a first duration;

The first duration includes a wake-up interface frame interval WIFS and a transmission time of a preamble of the second frame to be received, where the WIFS is an end of a previous frame of two adjacent frames transmitted through the wake-up interface. The interval between the start of the next frame; the WIFS is less than or equal to the short frame interval SIFS of the primary communication interface.
The site device according to claim 18, wherein if the first frame is a beacon frame or the first frame is a wake-up frame and the wake-up interface identifier included in the first frame is not the When the identifier of the wake-up receiver of the station device is received, after the receiving unit receives the first frame, the processing unit listens to the wireless channel for receiving the second frame in the first time period, including:

The processing unit stops listening to the wireless channel when the processing unit does not hear the signal of the second frame within the first duration; or

When the processing unit detects the presence of the signal of the second frame within the first duration, completing receiving the second frame, if the second frame includes the identifier of the wake-up receiver of the site device The processing unit wakes up the primary communication interface of the site device and stops listening to the wireless channel; or

After the processing unit receives the subsequent second frame within the first duration, and the second frame does not include the identifier of the wake-up receiver of the site device, the processing unit receives the The wireless channel continues to be listened to for the first time period after the second frame to determine whether there is a subsequent frame.
The station device according to claim 18 or 19, wherein the processing unit receives the first frame by the wakeup receiver, and the frame received after the first frame includes first indication information. , The first indication information takes a first value to indicate that the control device sends a frame subsequently, and the first indication information takes a second value to indicate that the control device does not send a frame subsequently;

After the receiving unit receives the first frame, and before the processing unit starts to listen to the wireless channel within the first duration, the processing unit is further configured to be used according to the first frame. The first indication message included determines whether to listen to the wireless channel within the first duration after receiving the first frame.
The station device according to any one of claims 18 to 20, wherein said receiving unit is further used before said receiving unit receives said first frame from said control device via said wake-up receiver Receiving primary communication interface signaling from the control device, the primary communication interface signaling includes the control device transmitting signaling of the primary communication interface to occupy the first frame or the last wake-up frame Time length information of the wireless channel;

The processing unit is further configured to determine that the occupied wireless channel is not used by the primary communication interface within a time period indicated by the time length information.
A control device, comprising:

a processing unit, configured to compete for a wireless channel in a first time window starting at a first preset time point;

a sending unit, configured to send a wake-up interface frame sequence after competing to the wireless channel, where the first frame in the wake-up interface frame sequence is a beacon frame or a wake-up frame, where the The frame after one frame is a wake-up frame, and each wake-up frame in the wake-up interface frame sequence includes a wake-up interface identifier, and each of the wake-up frames is used to wake up the wake-up interface identifier included in each of the wake-up frames. And waking up the main communication interface of the site device where the receiver is located, where each frame in the wake-up interface frame sequence includes first indication information, where the first indication information takes a first value, indicating that the control device subsequently sends a frame, Taking the second value of the first indication information to indicate that the control device does not send the frame subsequently;

The first indication information included in the frame other than the last frame in the wake-up interface frame sequence takes a first value, and the first frame included in the last frame in the wake-up interface frame sequence The indication information takes the second value.
The control device according to claim 22, characterized in that, in addition to the last frame in the sequence of wake-up interface frames, the processing unit starts with a transmission end time point of each completed transmission frame The wireless channel is contending within the second time window, and after competing for the wireless channel, the transmitting unit transmits a subsequent frame of the transmitted completed frame.
The control device according to claim 22, characterized in that

Sending, by the sending unit, the first frame;

When the first indication information included in the first frame indicates that there is a subsequent frame after the first frame, the sending unit starts at a time point of ending the transmission of the first frame, The subsequent frame is transmitted after the first frame interval, and the first frame interval is less than or equal to the short frame interval SIFS of the primary communication interface.
A site device, comprising:

a processing unit, configured to start listening to the wireless channel before the first time window starting at the first preset time point;

a receiving unit, configured to receive, by using a wake-up receiver, a first frame, where the first frame is a beacon frame or a wake-up frame, and the receiving unit receives the first frame after the first frame by using the wake-up receiver The frame is a wake-up frame, each wake-up frame received by the receiving unit includes a wake-up interface identifier, and each wake-up frame is used to wake up the wake-up receiver corresponding to the wake-up interface identifier included in each wake-up frame. a main communication interface of the station device, where the receiving unit receives all the frames received by the awake interface machine, and the first indication information takes a first value, and the control device sends a frame subsequently. The first indication information takes a second value indicating the control The device does not send frames subsequently;

If the first frame is a wake-up frame and the wake-up interface identifier included in the first frame is an identifier of the wake-up receiver of the site device, the processing unit wakes up the primary communication interface of the site device, And stop listening to the wireless channel; or

If the first frame is a beacon frame or the first frame is a wake-up frame and the wake-up interface included in the first frame identifies a wake-up interface identifier that is not the site device, the processing unit is configured according to the The first indication information included in one frame determines whether to continue to listen to the wireless channel.
The station device according to claim 25, wherein said receiving unit is further configured to perform said control before said receiving unit receives said first frame from said control device via said wake-up receiver The device receives the primary communication interface signaling, where the primary communication interface signaling includes the time when the control device sends the signaling of the primary communication interface to the wireless channel occupied by the first frame or the last wake-up frame. Length information

The processing unit is further configured to determine that the occupied wireless channel is not used by the primary communication interface within a time period indicated by the time length information.