CN108712741B

CN108712741B - Method, device and system for awakening device

Info

Publication number: CN108712741B
Application number: CN201810276679.5A
Authority: CN
Inventors: 程勇; 丁志明; 方平; 杨云松
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2017-04-01
Filing date: 2018-03-30
Publication date: 2020-12-04
Anticipated expiration: 2038-03-30
Also published as: CN108712741A

Abstract

The embodiment of the invention provides a method for waking up equipment, which comprises the following steps: the first device generating a wake-up radio WUR frame, the WUR frame including indication information indicating that the first device has stopped working after sending the WUR frame, or the indication information indicating that the first device is not to be replaced before sending a next WUR frame, or the indication information indicating that a third device is to replace the first device; the first device sends a WUR frame to a WUR module of a second device associated with the first device, and the WUR frame is used for the second device to determine to wake up a master communication module of the second device so as to re-associate the awakened master communication module with a third device replacing the first device, so that communication between the third device after replacing the first device and the second device associated with the first device before being replaced is realized.

Description

Method, device and system for awakening device

The present application claims priority from a chinese patent application filed on 2017, 4/1, having application number 201710213963.3 and entitled "a method and apparatus for rediscovery of wireless devices," the entire contents of which are incorporated herein by reference.

Technical Field

The present application relates to the field of communications, and in particular, to a method and an apparatus for waking up a device.

Background

Wi-Fi technology has been generalized to the Internet of Things (IoT), for example, using Wi-Fi communication modules as devices with main power consumption, such as wearable devices and digital medical devices, which are usually small in size, and the size and capacity of portable batteries are also limited. In order to prolong the service life of the battery, a sleep mode of a Wi-Fi module is provided, and a wake-up radio/receiver (WUR) module is configured in the device, namely when the device has no data transmission, the Wi-Fi module is enabled to enter the sleep mode, for example, a transceiver is turned off, and the WUR module is turned on for listening; when the WUR module senses that another device (or referred to as a first device, such as an Access Point (AP)) needs to send data to the device (or referred to as a second device), in other words, when the WUR module receives a message sent by the AP to wake up the Wi-Fi module of the device, the WUR wakes up the host communication module, i.e., the Wi-Fi module, of the device to complete subsequent data transmission between the device and the AP. The WUR module is a wireless module with ultra-low power consumption, and the Wi-Fi module is in a dormant state when no data is transmitted, so that the power consumption of the device is reduced.

However, if the device associated with the device, or a device communicating with the device, such as an AP, is replaced with a new AP, the new AP has no way to discover the device associated with the replaced old AP, and cannot wake up the device for data transmission with the device. Wherein the device associated with the AP may include a plurality.

Disclosure of Invention

The embodiment of the invention provides a new method and equipment for awakening equipment.

In a first aspect, a method for waking up a device is provided, and the method includes:

the first device generating a wake-up radio WUR frame, the WUR frame including indication information indicating that the first device has stopped working after sending the WUR frame, or the indication information indicating that the first device is not to be replaced before sending a next WUR frame, or the indication information indicating that a third device is to replace the first device;

the first device sends a WUR frame to a WUR module of a second device associated with the first device, wherein the WUR frame is used for the second device to determine to wake up a master communication module of the second device so as to be associated with a third device replacing the first device through the woken up master communication module. Communication between a third device after the replacement of the first device and a second device associated with the first device before the replacement is realized.

In one possible implementation, the WUR frame further includes identification information of a third device, the third device being a device that will replace the first device.

In another possible implementation, the WUR frame further includes at least one of key information and encrypted content for the second device to verify authenticity of the WUR frame.

In yet another possible implementation, the WUR frame is a WUR beacon frame.

In yet another possible implementation, the first device sends a WUR frame to a WUR module of a second device associated with the first device, specifically:

the first device broadcasts a WUR frame on a working channel of a WUR module of the second device according to the broadcast address information of the WUR module of the second device.

In a second aspect, a method for waking up a device is provided, the method comprising:

a wakeup radio WUR module of the second device receives a WUR frame sent by the first device, wherein the WUR frame comprises indication information, the indication information indicates that the first device stops working after sending the WUR frame, or the indication information indicates that the first device is not replaced before sending the next WUR frame, or the indication information indicates that a third device is to replace the first device;

and the second device determines to wake up the main communication module of the second device according to the WUR frame so as to be associated with a third device replacing the first device through the woken-up main communication module. Communication between a third device after the replacement of the first device and a second device associated with the first device before the replacement is realized.

In yet another possible implementation, the WUR frame is a WUR beacon frame.

In yet another possible implementation, the wake-up radio WUR module of the second device receives a WUR frame sent by the first device, specifically:

the second device receives a WUR frame at a working channel of a WUR module of the second device.

In a third aspect, a method for waking up a device is provided, and the method includes:

the method comprises the steps that a third device obtains device information of a second device and device information of a first device, the third device is a device replacing the first device, the second device is a device which is associated with the first device before the third device replaces the first device, the device information of the second device comprises static identification information of the second device, broadcast address information of a WUR module of the second device and a working channel of the WUR module of the second device, and the device information of the first device comprises the identification information of the first device;

the third device generates a wake-up radio WUR frame, the WUR frame including indication information indicating that the third device is a device in place of the first device;

and the third equipment broadcasts a WUR frame in a working channel of the WUR module of the second equipment according to the broadcast address information of the WUR module of the second equipment, wherein the WUR frame is used for indicating the second equipment to wake up the master communication module of the second equipment so as to be re-associated with the third equipment through the wakened master communication module. Communication between a third device after the replacement of the first device and a second device associated with the first device before the replacement is realized.

In one possible implementation, the WUR frame further includes at least one of key information and encrypted content for the second device to verify authenticity of the WUR frame.

In another possible implementation, the WUR frame is a WUR beacon frame.

In a fourth aspect, a method of waking up a device is provided, the method comprising:

a wakeup radio WUR module of the second device receives a WUR frame sent by a third device in a working channel of the WUR module of the second device, wherein the WUR frame comprises indication information which is used for indicating the third device as a device replacing the first device;

and the second equipment awakens the main communication module of the second equipment according to the WUR frame so as to be re-associated with the third equipment through the awakened main communication module. Communication between a third device after the replacement of the first device and a second device associated with the first device before the replacement is realized.

In another possible implementation, the WUR frame is a WUR beacon frame.

In a fifth aspect, there is provided an apparatus, the apparatus being a first apparatus, the apparatus comprising:

a processor for generating a wake-up radio WUR frame, the WUR frame including indication information indicating that the first device has stopped working after sending the WUR frame, or the indication information indicating that the first device is not to be replaced before sending a next WUR frame, or the indication information indicating that a third device is to be substituted for the first device;

and the host communication module is used for sending a WUR frame to the WUR module of the second device associated with the first device, and the WUR frame is used for the second device to determine to wake up the host communication module of the second device so as to be re-associated with a third device replacing the first device through the woken host communication module. Communication between a third device after the replacement of the first device and a second device associated with the first device before the replacement is realized.

In yet another possible implementation, the WUR frame is a WUR beacon frame.

In yet another possible implementation, the host communication module is configured to send a WUR frame to a WUR module of a second device associated with the first device, specifically:

the host communication module broadcasts a WUR frame on a working channel of the WUR module of the second device according to the broadcast address information of the WUR module of the second device.

In a sixth aspect, there is provided an apparatus, the apparatus being a second apparatus, the apparatus comprising:

the device comprises a wakeup radio WUR module, a first device and a second device, wherein the wakeup radio WUR module is used for receiving a WUR frame sent by the first device, and the WUR frame comprises indication information which indicates that the first device stops working after sending the WUR frame, or the indication information indicates that the first device is not replaced before sending the next WUR frame, or the indication information indicates that a third device is to replace the first device;

and the processor is used for determining to wake up the main communication module of the second device according to the WUR frame so as to be associated with a third device replacing the first device through the woken main communication module. Communication between a third device after the replacement of the first device and a second device associated with the first device before the replacement is realized.

In yet another possible implementation, the WUR frame is a WUR beacon frame.

In yet another possible implementation, the wake-up radio WUR module is configured to receive a WUR frame sent by a first device, specifically:

the WUR module receives WUR frames at a working channel of the WUR module.

In a seventh aspect, there is provided an apparatus, which is a third apparatus, including:

the processor is used for acquiring device information of a second device and device information of the first device, the third device is a device replacing the first device, the second device is a device which is associated with the first device before the third device replaces the first device, the device information of the second device comprises static identification information of the second device, broadcast address information of a WUR module of the second device and a working channel of the WUR module of the second device, and the device information of the first device comprises identification information of the first device;

a processor further configured to generate a wake-up radio WUR frame, the WUR frame including indication information indicating that the third device is a device in place of the first device;

and the host communication module is used for broadcasting a WUR frame in a working channel of the WUR module of the second device according to the broadcasting address information of the WUR module of the second device, and the WUR frame is used for indicating the second device to wake up the host communication module of the second device so as to be re-associated with the third device through the awakened host communication module. Communication between a third device after the replacement of the first device and a second device associated with the first device before the replacement is realized.

In another possible implementation, the WUR frame is a WUR beacon frame.

In an eighth aspect, there is provided an apparatus, the second apparatus being a second apparatus, the apparatus comprising:

the wireless WUR module is awakened to receive a WUR frame sent by a third device on a working channel of the WUR module, wherein the WUR frame comprises indication information which is used for indicating the third device as a device replacing the first device;

and the processor is used for awakening the main communication module of the second equipment according to the WUR frame so as to be associated with the third equipment again through the awakened main communication module. Communication between a third device after the replacement of the first device and a second device associated with the first device before the replacement is realized.

In another possible implementation, the WUR frame is a WUR beacon frame.

In a ninth aspect, there is provided a system comprising the apparatus of any of the fifth aspect or the fifth possible implementation manner, and the apparatus of any of the sixth aspect or the sixth possible implementation manner, or,

the system comprises the apparatus of any one of the seventh aspect or the seventh aspect as well as the apparatus of any one of the eighth aspect or the eighth aspect.

In one possible implementation, the apparatus provided in the fifth aspect or the seventh aspect may be an access point apparatus AP, and the apparatus provided in the sixth aspect or the eighth aspect may be a station (station).

Based on the provided method and device for waking up the device, the device generates a WUP frame including indication information, wherein the indication information is used for indicating that the device (third device) is a device for replacing an old device (first device), or the device (first device) stops working after sending the WUR frame, or the device (first device) is not replaced and normally works before sending the next WUR frame; the device information may include information related to the replaced old device (first device), identification information of a second device associated with the replaced old device, and the like, and the device (third device) broadcasts the WUR frame on a working channel of the WUR module of the second device according to broadcast address information of the WUR module of the second device, so that after the WUR frame is received by the second device, the device (third device) determines to wake up a host communication module (such as a Wi-Fi module) in the second device according to indication information, so as to re-associate with the third device through the woken-up host communication module, thereby realizing communication between the new device (third device) and the second device associated with the old device (first device).

The present application further provides any of the following examples, which are not specifically numbered in any way whatsoever with respect to the numbering of the other examples herein, but merely for convenience of reference in this section:

a method of transmitting a wake-up radio WUR frame, comprising:

a first device generating a broadcasted wake-up radio WUR frame, the wake-up radio WUR frame including indication information indicating whether the first device is a new device or whether the first device is about to stop working;

the first device sends the wake radio WUR frame to an auxiliary wake interface of the second device.

And after the STA receives the indication information in the WUR frame, the STA can determine to select to wake up a main communication interface of the STA according to the indication information so as to communicate with the new AP. This may avoid frequent backups of information of the secondary wakeup interface of the STA. For example, if an access point AP needs to periodically broadcast WUR Beacon, the WUR Beacon may be reused, the indication information may be added to the WUR Beacon, or some information (e.g., frame type information) in the WUR Beacon may be reused to indicate whether an AP is a newly replaced AP or whether an AP is an AP that is about to stop working.

The method of claim 1, the wake radio WUR frame further comprising one or more of the following information:

legacy 802.11 preamble, wakeup preamble, frame type information, information of the first device, information of a basic service set in which the first device is located, information of the second device, information of a basic service set in which the second device is located, and frame check sequence FCS.

The transmitted broadcasted WUR frame may further comprise information of the sender (e.g. information of the AP), information of the receiver (e.g. broadcast address), information of the basic service set, which information may be used to help the device STA to decide whether a WUR frame is related to itself, e.g. whether the STA itself is the target receiver of the WUR frame. The WUR frame may also include a frame check sequence, which may be used to help the STA determine whether the received WUR frame is correct.

The method of 1 or 2, the wake radio WUR frame further comprising secret information, the secret information being shared by the first device and the second device.

The WUR frame can further comprise secret information which is used for helping the device STA to authenticate the authenticity of the received WUR frame, and an attacker can be prevented from forging the WUR frame so that the STA can wake up the main communication interface continuously to waste electricity. The AP and the STA need to agree on the key information, i.e. the key information is shared by the AP and the STA.

The method of claim 1 or 2, further comprising:

part of the content in the wake radio WUR frame is encrypted, and an encryption algorithm and a key used for encryption are shared by the first device and the second device.

To prevent attacks, the broadcasted WUR frame may also include partially encrypted content, which may be used to help the device STA authenticate the authenticity of the received WUR frame. The encryption and decryption algorithms, and keys, are known to both the AP and the STA. The STA needs to decrypt part of the content of the received WUR frame before being able to verify the correctness and authenticity of the WUR frame.

The method of any of claims 1 to 4, further comprising:

the wakeup radio WUR frame is a wakeup radio Beacon frame WUR Beacon, which is a broadcast frame.

If the access point AP needs to broadcast WUR Beacon periodically, the WUR Beacon may be reused, the indication information may be added to the WUR Beacon, or some information (e.g., frame type information) in the WUR Beacon may be reused to indicate whether an AP is a newly replaced AP or whether an AP is an AP that is about to stop working.

The method according to any of claims 1 to 5, wherein the first device is an access point, AP, and the second device is a device, STA.

An apparatus to transmit a wake-up radio WUR frame, the apparatus comprising: the device comprises a memory, a processor, an auxiliary wake-up interface and a main communication interface; the memory is used for storing instructions and data; the processor is used for calling the instructions stored in the memory and executing the method as set forth in any one of claims 1-5 through the auxiliary wake-up interface and the main communication interface.

The device of claim 7, wherein the auxiliary wake-up interface is a communication interface provided by an auxiliary wake-up module (e.g., a WUR module), and the main communication interface is a communication interface provided by a main communication module (e.g., a Wi-Fi module).

A method of receiving a wake-up radio WUR frame, comprising:

the method comprises the steps that a second device receives a wakeup radio WUR frame sent by a first device through an auxiliary wakeup interface of the second device, wherein the wakeup radio WUR frame comprises indication information, and the indication information indicates whether the first device is a new device or not or indicates whether the first device is about to stop working or not;

and the second equipment determines the working state of a main communication interface of the second equipment according to the indication information.

The method of claim 9, the wake radio WUR frame further comprising one or more of the following information:

The method of claim 9 or 10, further comprising:

secret information is carried in the wake-up radio WUR frame;

before the second device determines the working state of the main communication interface of the second device according to the indication information, the second device authenticates the authenticity of the received wake-up radio WUR frame by comparing secret information stored locally by the second device and secret information carried in the wake-up radio WUR frame, wherein the secret information stored locally is shared by the first device and the second device.

The WUR frame can further comprise secret information which is used for helping the device STA to authenticate the authenticity of the received WUR frame, and an attacker can be prevented from forging the WUR frame so that the STA can wake up the main communication interface continuously to waste electricity. The AP and the STA need to agree on the key information, i.e. the key information is shared by the AP and the STA. In the scheme, the STA can judge the authenticity of the WUR frame only by verifying the secret information in the received WUR frame, and the calculation complexity is low.

The method of claim 9 or 10, further comprising:

part of the content in the wake radio WUR frame is encrypted;

before the second device determines the working state of the main communication interface of the second device according to the indication information, the second device authenticates the authenticity of the received wake-up radio WUR frame through the encrypted content, the authenticity authentication includes the second device decrypting the encrypted content and verifying the decrypted wake-up radio WUR frame, and the encryption and decryption algorithms and keys are shared by the first device and the second device.

The method of any of claims 9 to 12, further comprising:

The method according to 9 or 10, wherein the determining, by the second device, the working state of the primary communication interface of the second device according to the indication information includes:

the second device selects to awaken the main communication interface of the second device, or the second device keeps the working state of the main communication interface of the second device unchanged.

After receiving the WUR frame and the indication information, the device STA may choose not to change the operating state of its host communication interface, for example, to keep its host communication interface in an off state for power saving; or the device STA may change the operating state of its primary communication interface from the sleep state to an operating state (e.g., a reception state) in order to communicate with the newly replaced access point AP.

The method according to any of claims 9 to 14, wherein the first device is an access point AP and the second device is a device STA.

An apparatus for receiving a wake-up radio WUR frame, the apparatus comprising: the device comprises a memory, a processor, an auxiliary wake-up interface and a main communication interface; the memory is used for storing instructions and data; the processor is configured to call the instructions stored in the memory to perform the method as claimed in any of claims 9-14 via the auxiliary wake-up interface and the main communication interface.

The device of claim 16, wherein the auxiliary wake-up interface is a communication interface provided by an auxiliary wake-up module (e.g., a WUR module), and the main communication interface is a communication interface provided by a main communication module (e.g., a Wi-Fi module).

Drawings

FIG. 1 is a schematic diagram of a system according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a wake-up frame according to an embodiment of the present invention;

fig. 3 is a schematic diagram of a WUR frame according to an embodiment of the present invention;

fig. 4 is a flowchart of a method for waking up a device according to an embodiment of the present invention;

fig. 5 is a flowchart of another method for waking up a device according to an embodiment of the present invention;

fig. 6 is a schematic diagram of another WUR frame provided by embodiments of the present invention;

fig. 7 is a schematic diagram of yet another WUR frame provided by an embodiment of the present invention;

fig. 8(a) is a schematic diagram of occupying a secret key according to an embodiment of the present invention;

fig. 8(b) is a schematic diagram of another key placeholder provided in the embodiment of the present invention;

FIG. 9 is a schematic structural diagram of an apparatus according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of another apparatus provided in the embodiment of the present invention.

Detailed Description

The method and the device for awakening the device are suitable for the Internet of things and a wearable Wi-Fi network based on Wi-Fi. The wearable Wi-Fi network refers to a Wi-Fi network formed by a mobile phone or a smart terminal serving as a virtual access point (softAP) and associated wearable equipment. Devices (STAs) in the internet of things and wearable Wi-Fi networks are devices that are powered by small capacity batteries and have low power consumption and long battery life requirements.

Devices in the internet of things and wearable Wi-Fi networks may include at least one Access Point (AP) and at least one device (STA). Wherein, the AP is an AP supporting 802.11 protocol. In the embodiment of the present invention, the AP may be referred to as a first device, and the STA may be referred to as a second device. Both the first device and the second device may be used as a waking device or a awakened device.

As shown in fig. 1, the AP is a waking device and the STA is a awakened device. The AP and the STA may include a primary communication module and an auxiliary wake-up module; the main communication module is a Wi-Fi module, and the auxiliary awakening module is a WUR module. The AP may send a wake-up packet (WUP) to the WUR module of the STA to wake up a Wi-Fi module in the STA through the WUR module, thereby implementing communication between the AP and the STA. The AP sending the wake-up frame to the STA is that the AP sends the wake-up frame to a WUR module of the STA through a wake-up WUR interface of the STA. However, in the prior art, when the Wi-Fi module of the STA is in a sleep state, the AP associated with the STA is replaced due to aging, damage, failure, or the like, and the replaced AP (new AP or referred to as a first device) cannot know configuration information of at least one STA associated with the replaced AP (old AP or referred to as a third device), for example, an Identifier (ID) of a WUR interface of the STA, so that the replaced AP cannot transmit a wakeup frame to the at least one STA associated with the replaced AP.

In an embodiment of the invention, the WUP is a wake-up radio (WUR) frame including indication information. The indication information is used for indicating whether the AP is a newly replaced AP or not, or whether the AP works normally or about to stop working, namely the AP stops working before sending a next WUR frame to the STA; in one embodiment, the WUR further includes device information, which may include information such as identification information of at least one STA with which the replaced AP is associated before being replaced, or identification information of at least one STA associated with the current AP. The identification information of the STA may be a Medium Access Control (MAC) address, an Association Identifier (AID) or a Partial Association Identifier (PAID).

The WUR frame is generated by the AP. For example, when an AP is replaced due to a failure or is about to stop working, the newly replaced AP acquires information of a host communication interface and a WUR interface of at least one STA associated with the replaced AP from the network management device, where the information includes identification information of the STA; or manually configuring the information of the host communication interface and the WUR interface of at least one STA associated with the replaced AP for the newly replaced AP. Wherein, the information of the main communication interface and the WUR interface of at least one STA associated with the replaced AP is pre-backed up in the network management equipment or manually stored and backed up manually.

The AP and the STA use simple circuit design and signal processing method to enable the average power consumption of the WUR module to be very low, for example, when the WUR module adopts Duty-Cycling (10% Duty-Cycling), namely the WUR module wakes up and sleeps periodically, the average power consumption of the WUR module is about 100 microwatts (muW), and about 0.1% of the average power consumption of the Wi-Fi module. Compared with the method that a Wi-Fi module is directly started to monitor a channel, the WUR is adopted to remarkably reduce the average power consumption of the wireless equipment. The wake-up frame is much simpler to receive and decode than a standard Wi-Fi frame. The wakeup frame usually adopts a modulation scheme easy for the receiving end to demodulate, such as On-Off Keying (OOK) modulation. Taking OOK modulation as an example, the receiving end determines the information carried by the received signal according to the presence or absence of energy, for example, the presence of energy is "1" and the absence of energy is "0". For a conventional Wi-Fi frame, operations such as Binary Convolutional Codes (BCC)/LDPC and IFFT need to be performed at a transmitting end, and complex signal processing operations such as FFT and BCC/LDPC decoding need to be performed at a receiving end, which consumes a large amount of power.

In order to reduce the energy consumption of the WUR module and the error probability of the wake-up frame, the length of the wake-up frame is as short as possible, and the carried content is as little as possible. In the prior art, as shown in fig. 2, the wake-up frame may include at least one of the following: legacy 802.11 Preamble (Preamble), wake-up Preamble (wake-up Preamble), Frame Type information (Frame Type), Receiver Address (RA), Transmitter Address (TA), network identifier (network ID), Control information (Control Info), Counter information (Counter), Frame authentication information, and Frame check information (e.g., Frame Check Sequence (FCS)). The Wake-up Preamble (Wake-up Preamble) in the Wake-up frame (WUP) or referred to as a physical pilot sequence (physical Preamble sequence) is mainly used to identify the start of the Wake-up frame, implement symbol synchronization, AGC setting of the receiver, and the like. The receiver address is used to identify a target receiver of the wake-up frame, and may be a unicast address (unicast address) or a multicast address (group-cast address). The recipient address may include Network identification (Network ID) information or wake radio identification (WUR ID) information of the target device; or the Recipient Address (RA) may be a combination of a Network identification (Network ID) and a wake radio identification (WUR ID) of the target device. The wake radio identification (WUR ID) of the target device may be selected and assigned by the AP or AC, or the wake radio identification may be set at the time of shipment of the device. A Network identification (Network ID) may be used to identify a Basic Service Set (BSS) and/or an associated AP to which the wake-up frame belongs, e.g., a BSS color or a Basic Service Set Identifier (BSSID). The Network identification (Network ID) may be part of the target device's wake radio identification (WUR ID).

The WUR frame provided by the embodiment of the present invention is shown in fig. 3, and fig. 3 is only a WUR frame structure provided by the present invention. As shown in fig. 3, the WUR frame may include a legacy 802.11 preamble, a wakeup preamble, device information, indication information, a broadcast address (broadcast address), a transmission address, and an FCS. The device information may be AP information, or referred to as Basic Service Set (BSS) information. The broadcast address, i.e. the broadcast address of the WUR interface, may be used to identify a target recipient of the WUR frame, for example, the WUR interfaces of all STAs in a BSS; the broadcast address may include AP information or BSS information. The transmission address is used to identify the sender of the WUR frame; the transmission address may also include AP information or BSS information. The FCS may be used for the receiving end to verify the correctness of the WUR frame.

The method for waking up the device according to the embodiment of the present invention is described below with reference to fig. 4.

It should be noted that, hereinafter, the first device is a device that is operating normally, for example, an AP, the third device is a device that replaces the first device, and the second device is a device associated with the first device or the third device. There are various reasons for replacing the first device by the third device, such as obsolescence of the first device, hardware failure, and the like. In the embodiment of the present invention, the first device and the third device may be an AP or an STA, and the second device may be an STA or an AP. In the embodiment of the present invention, the first device and the third device are APs, and the second device is an STA.

As shown in fig. 4, the method may include the steps of:

s101, the first device generates a WUR frame.

Some information may be manually configured before the first device generates a WUR frame, for example, information that the first device is about to stop working, i.e., the device is about to be replaced, or information that the first device is manually configured to be replaced when the first device is replaced because hardware of the device suddenly fails.

In the embodiment of the invention, when the first device is a device which is working normally or a device which is about to stop working. For example, the first device is an AP, where a normally operating AP is an AP that is not replaced for a period of time, or an AP that is not replaced until the next WUR frame is sent. The AP that is going to stop working is the AP that will be replaced after the WUR frame is transmitted.

The WUR frame comprises indication information, the indication information indicates that the first device stops working after sending the WUR frame, or the indication information indicates that the first device is not replaced before sending the next WUR frame, or the indication information indicates that a third device is to replace the first device.

In the embodiment of the present invention, the indication information may include one or more bits. Alternatively, the indication information may be carried through a frame type field of the WUR frame, as shown in fig. 3.

Optionally, in one embodiment of the invention, the WUR frame is a WUR beacon frame.

Optionally, in one embodiment of the invention, the WUR frame further includes identification information of a third device, the third device being a device that will replace the first device.

S102, the first device sends a WUR frame to a WUR module of a second device associated with the first device.

In an embodiment of the invention, the first device broadcasts the WUR frame at a working channel of the WUR module of the second device according to the broadcast address information of the WUR module of the second device. The WUR frame is used for the second device to determine to wake up the master communication module of the second device to re-associate with a third device replacing the first device through the woken up master communication module.

After receiving the WUR frame, the second device determines the first device which sends the WUR frame according to the indication information in the WUR frame, and the first device is one of the following cases: it is assumed here that the first device and the third device are AP devices, and the second device is a STA associated with the third device.

In case one, the first device is a normally operating AP, i.e. the AP is not replaced when sending the next WUR frame;

in case two, the first device is an AP which is about to stop working, that is, the AP is replaced before the next WUR frame is sent;

case three, there will be a third device replacing the first device.

In an embodiment of the invention, a first device may associate with at least one second device, and the first device sends WUR frames to the at least one second device associated therewith, respectively.

S103, the second device determines to wake up a main communication module of the second device according to the WUR frame.

And after receiving the WUR frame, the second equipment determines the awakened main communication module according to the content of the WUR frame. When the indication information indicates that the AP is a normally operating AP, the STA may wake up a main communication module of the STA, i.e., a Wi-Fi module. Optionally, in an embodiment of the present invention, when the STA determines that the AP indicated by the indication information is a normally operating AP, the STA may not change the operating state of its main communication module.

When the indication information indicates that the AP is about to stop working and a WUR frame indicating that the AP is about to stop working is not received within a time period T1 before the current time (this condition may be a further optional condition), the STA wakes up the Wi-Fi module of the STA to wait for communication with a new AP replacing the AP, such as establishing association or negotiating a key, etc.

Alternatively, in one embodiment of the present invention, T1 may be determined by the STA, or set by the device vendor, or set manually by the user, or may be set due to the AP with which the STA is associated. For example, T1 may be 30 seconds each. In one embodiment, the STA may not change the operating state of its Wi-Fi module if it has received a WUR frame indicating that the AP is about to stop operating within a time period T1 prior to the current time.

The second device is re-associated with the third device replacing the first device through the awakened main communication module, namely, the second device associated with the first device is awakened when the third device replaces the first device, and then the second device is communicated with the third device.

Fig. 5 is another method for waking up a device according to an embodiment of the present invention, as shown in fig. 5, the method may include the following steps:

s201, the third device acquires the device information of the second device and the device information of the first device.

The third device is a device replacing the first device, the second device is a device associated with the first device before the third device replaces the first device, the device information of the second device comprises static identification information of the second device, broadcast address information of a WUR module of the second device and a working channel of the WUR module of the second device, and the device information of the first device comprises identification information of the first device. In this embodiment of the present invention, the static identification information of the second device may be a MAC address of the second device; the identification information of the first device may be a MAC address of the first device, or a BSS color corresponding to the first device, or a BSS ID.

When the first device is an AP, the device information is AP information or a BSS of the AP. The AP information includes identification information of at least one second device (e.g., STA) associated with the AP, e.g., a MAC address of a wake-up interface of the STA.

Optionally, in an embodiment of the present invention, the AP may obtain AP information or a BSS of the AP from the network management device; or the AP may be manually configured with AP information or BSS of the AP.

The AP information in the network management device or the BSS of the AP is pre-stored. After the Wi-Fi module of the STA is awakened, the AP updates address information of a corresponding interface of the WUR module of the STA, such as the Identification (ID) of the WUR, or updates the work Cycle (Duty-Cycle) parameter of the STA; or manually backup WUR ID or Duty-Cycle parameters.

Optionally, in this embodiment of the present invention, the AP may further obtain, from the network management device, information such as the number of STAs associated with the AP, a MAN address of each STA, and an operating channel of a WUR module of each STA.

S202, the third device generates a WUR frame.

The WUR frame includes indication information for indicating that the third device is a device replacing the first device. In one embodiment, the WUR frame further includes device information of the first device and device information of the second device, the device information including identification information of the second device associated with the first device by the third device before replacing the first device, wherein the identification information of the STA may be a MAC address, AID, or PAID.

In the embodiment of the present invention, the first device is a device that is operating normally, or a device that is about to stop operating or is about to be replaced, or a device that has been replaced, and the first device may be an AP. The third device is a device for replacing the first device, and the replaced first device, for example, a replaced AP, may be replaced due to failure, or being damaged or obsolete. The second device is a device associated with the first device and may be a STA. In an embodiment of the invention, there may be at least one second device associated with the first device.

When the first device and the third device are APs, the device information of the first device is AP information or BSS information. The AP information may be a MAC address or a compressed MAC address of the AP; the BSS information may be information of a basic service set in which the AP is located, such as a BSS color or a BSSID, or a compressed BSSID.

It should be noted that, in the embodiment of the present invention, when the third device is a new newly replaced AP and the first device is a replaced old AP, before the new AP acquires the device information of the replaced old AP from the network management device, the new AP may be configured with the identification information of the old AP in advance, for example, the MAC address, or manually configure that the new AP and the old AP use the same MAC address, so that when the network management device receives the device information of the old AP acquired by the new AP, the network management device may send the device information of the corresponding device according to the MAC address. In the embodiment of the present invention, the new AP may also obtain the MAC address of the old AP through other manners, and in the embodiment of the present invention, the manner in which the new AP obtains the MAC address of the old AP is not limited.

S203, the third device sends a WUR frame to the second device.

The third device may transmit WUR frames to the at least one second device, respectively. And the third equipment sends the WUR frame to at least one auxiliary awakening interface of the second equipment through a main communication interface of the third equipment, wherein the main communication interface is a Wi-Fi interface, and the auxiliary awakening interface is a WUR interface.

If the indication information of the WUR frame indicates that the first device is an AP to be stopped, which may be referred to as an old AP, the second device is an STA among at least one STA associated with the old AP. The device information is identification information of at least one STA including association with the old AP, for example, a MAC address of the STA.

If the indication information of the WUR frame indicates that the third device is a replaced AP, which may be referred to as a new AP, the second device is an STA among at least one of STAs associated with the old AP before being replaced by the new AP. The device information is identification information of at least one STA including association with the old AP, for example, a MAC address of the STA.

To improve the probability that a WUR frame is successfully received by a STA, the AP may repeatedly transmit the WUR frame n times, where n is a positive integer greater than zero. If the WUR frame is a WUR beacon frame and the indication information indicates that the third device is a device replacing the first device, for example, the third device is a new AP, the device information of the WUR frame is AP information, and the AP information includes information corresponding to the old AP, which may include a MAC address or a compressed MAC address of the old AP, or a BSS, such as a BSS color or BSSID, where the old AP is located, or a compressed BSSID. The AP information includes information related to the old AP, so as to ensure that an STA associated with a certain old AP receives and processes N WUR frames sent by the new AP.

And S204, the second equipment determines to wake up the main communication module of the second equipment according to the indication information.

And after the second device receives the WUR frame, the third device which sends the WUR frame is determined to be a new replaced AP which replaces the first device according to the indication information in the WUR frame.

When the indication information indicates that the AP is a new replacement AP and a WUR frame indicating that the AP is a new replacement AP is not received within a time period T2 before the current time (this condition may be a further optional condition), the STA turns on the Wi-Fi module of the STA to wait for communication with the new AP, such as establishing association or negotiating a key, and the like.

Alternatively, in one embodiment of the present invention, T2 may be determined by the STA, or set by the device vendor, or set manually by the user, or may be set due to the AP with which the STA is associated. For example, T2 may be 30 seconds each. In one embodiment, the STA does not change the operating state of its Wi-Fi module if a WUR frame indicating that the AP is a newly updated AP has been received within a time period T2 prior to the current time.

By adopting the method for waking up the equipment, the AP sends the WUR frame carrying the indication information to the STA to indicate whether the AP is a new AP which is about to stop working or is replaced, and then the STA determines to wake up the Wi-Fi module of the STA according to the indication information, so that the problem that the new AP cannot acquire the information of the STA associated with the old AP and cannot wake up the STA to further cause communication failure after the AP is replaced is solved.

It should be noted that, in the embodiment of the present invention, the AP and the STA may mutually serve as a wakeup device or a awakened device. In the embodiment of the present invention, the STA may be a mobile terminal, such as a mobile phone, a tablet, or a wearable device, such as a sports bracelet, a smart watch, and the like.

In the embodiment of the invention, the network management equipment only needs to back up fixed information of the AP, such as the number of STAs associated with the AP, the MAC address of each STA, the working channel of the WUR module of each STA and information related to the AP, and does not need to frequently back up parameter information of the working of the WUR module associated with the AP, such as parameters of WUR ID, WUR Duty-Cycle and the like. The method avoids manual reconfiguration of STA information associated with the AP and also avoids manual frequent backup of parameter information of the STA WUR module.

Optionally, in the embodiment of the present invention, when the first device is a device that operates normally and the second device receives the WUR frame sent by the first device, the second device may not wake up the host communication module of the second device, so as to save power consumption.

To prevent an attacker from forging a WUR frame, misleading the second device to wake up its Wi-Fi module such that the second device wastes power. For example, when a legal AP works normally, an attacker (illegal) AP forges a WUR frame and indication information, sets the indication information to indicate that a sender of the WUR frame is a new AP or an AP about to stop working, and after receiving the WUR frame, the STA wakes up the Wi-Fi module to wait for communication with the new AP and waste electric energy. In this case, the WUR frame may optionally further include at least one of key information and encrypted content, as shown in fig. 6 and 7. The key information and the encrypted content are used by the second device to verify the authenticity of the WUR frame.

In an embodiment of the present invention, the encryption information may be a key (key), which is a key shared by the third device and the at least one second device associated therewith. The key can be backed up in the network management device, and the key is acquired from the network management device when the first device generates the WUR frame or before the first device generates the WUR frame; or manually backing up the key, and manually configuring the key in the first device when the first device generates the WUR frame or before the first device generates the WUR frame. In another embodiment of the present invention, the encryption information may be a Group Temporal Key (GTK) generated by the third device, or a key generated by the third device and specifically used for discovering the STA, such as a random sequence, or a sequence of artificial devices.

The length of the key information may be set by the third device or specified by standard law, or set manually, for example, the length of the key information may be 32 bits.

In one embodiment of the invention, the WUR frame may also include Time Synchronization Function (TSF) information. Assuming that the number of bits that the TSF information may occupy is denoted as M, and the number of occupied bits of the key is denoted as N, where M is greater than or equal to N, in the embodiment of the present invention, the key may be carried in the TSF information, and occupy N bits of the TSF information, for example, the key may occupy a low N bit in the TSF information (as shown in fig. 8 (a)) or occupy a high N bit in the TSF information (as shown in fig. 8 (b)), and which N bit of the TSF information is occupied by the key may not be limited in the embodiment of the present invention.

In another embodiment of the present invention, the key may also be carried in the FCS, for example, the number of bits occupied by the FCS is denoted as L, the number of bits occupied by the key is also N, and L is greater than or equal to N; the key may occupy N bits in the FCS, and it is not limited in the embodiment of the present invention which N bits in the FCS are occupied by the key.

In another embodiment of the invention, when the sum of the number of bits M occupied by the TSF information carried by the WUR frame and the number of bits L occupied by the FCS is greater than or equal to the length N of the key, i.e., M + L ≧ N, the key can occupy K bits in the TSF information and (N-K) bits in the FCS, where K is an integer and K is ≦ M. The specific location of the key occupation in the TSF information and the FCS is not limited in the embodiments of the present invention.

In yet another embodiment of the invention, to prevent an attacker from forging a WUR frame, it is also possible to encrypt part of the content of the WUR frame and carry the encrypted content in the WUR frame, so that when the second device receives the WUR frame, the authenticity of the WUR frame is verified based on the encrypted content in the WUR frame. The encrypted content is obtained by adopting a key and calculating according to an existing encryption algorithm. The second device, upon receiving the WUR frame, may decrypt the encrypted data in accordance with a decryption algorithm and a decryption key to verify the authenticity of the WUR. It should be noted here that the decryption key algorithm may be carried in the key information, for example, carrying an identifier of the key algorithm. In the embodiment of the present invention, before the first device generates the WUR frame, the first device may also obtain information of the encryption/decryption algorithm from the network management device, or may obtain the information of the encryption/decryption algorithm through manual configuration.

In one embodiment of the present invention, the encrypted content may be part or all of the encrypted FCS, for example, the number of bits of the FCS is L, the number of bits of the key is N; when L is larger than or equal to N, N bits in the FCS can be encrypted to serve as encrypted content; when L < N, L bits in the FCS and B bits of other parts in the WUR frame may be encrypted, where B is N-L. The other part of the WUR frame referred to herein may be the other part of the WUR frame except for the FCS, wake-up preamble, and device information indication information, i.e., the encrypted content does not include the wake-up preamble, device information, and indication information. As shown in fig. 7, the encrypted contents respectively include FCS and partial contents of the reception address.

In the embodiment of the present invention, N bits or L bits in the FCS are encrypted, mainly to verify the authenticity of the WUR frame by using the FCS.

In an embodiment of the invention, a first device generates a WUR frame including an FCS and then encrypts the WUR frame. The encryption may be performed by an exclusive-or operation, for example, performing an exclusive-or operation on the N-bit content in the WUR frame and the key, and then refilling the corresponding position of the N-bit in the WUR frame with the result obtained by the exclusive-or operation, that is, carrying the encrypted N-bit content as the N-bit content at the position of the WUR frame where the N-bit content is located.

Optionally, in an embodiment of the present invention, the WUR frame may be a WUR beacon (beacon) frame, which is a broadcast WUR frame. The WUR frame may be periodically broadcast by the AP, and may also carry information such as the legacy 802.11 preamble, wake-up preamble, broadcast address, receive address, FCS, etc. shown in fig. 3.

Fig. 4 to 8(a) and 8(b) describe a method for waking up a device, and the device provided in the embodiment of the present invention is described below with reference to fig. 9 and 10.

Fig. 9 is a schematic structural diagram of an apparatus according to an embodiment of the present invention. As shown in fig. 9, the device may be an AP, and the device includes a processor 301, a main communication module 302, a secondary wakeup module 303 and a memory 304, where the processor 301, the main communication module 302, the secondary wakeup module 303 and the memory 304 are connected to each other and complete communication therebetween. The memory 304 is used for storing instructions and data, and the processor 301 is used for calling the instructions in the memory 304 and completing the following operations:

a processor 301 for generating a wake-up radio WUR frame, the WUR frame including indication information indicating that the first device has stopped working after sending the WUR frame, or that the first device has not been replaced before sending the next WUR frame, or that there is a third device to replace the first device;

a master communication module 302 for sending a WUR frame to a WUR module of a second device associated with the first device, the WUR frame for the second device to determine to wake up the master communication module 302 of the second device for re-association with a third device replacing the first device through the woken-up master communication module 302.

Optionally, in an embodiment of the present invention, the WUR frame further includes identification information of a third device, and the third device is a device that will replace the first device.

Optionally, in one embodiment, the WUR frame further comprises at least one of key information and encrypted content for the second device to verify authenticity of the WUR frame. Optionally, in another embodiment, the WUR frame is a WUR beacon frame.

Optionally, in another embodiment, the host communication module 302 is configured to send a WUR frame to a WUR module of a second device associated with the first device, specifically:

the host communication module 302 broadcasts a WUR frame at an operating channel of the WUR module of the second device according to the broadcast address information of the WUR module of the second device. In embodiments of the invention, the processor may include at least one to enable the generation of WUR frames.

The functions of the functional devices in the apparatus may be implemented by the steps executed by the first apparatus (e.g., AP) in the embodiment shown in fig. 4, and therefore, detailed working processes of the apparatus provided in the embodiment of the present invention are not repeated herein.

Fig. 10 is a schematic structural diagram of an apparatus according to an embodiment of the present invention. As shown in fig. 10, the device may be an STA, and the device includes a main communication module 401, an auxiliary wakeup module 402, a processor 403 and a memory 404, wherein the main communication module 401, the auxiliary wakeup module 402, the processor 403 and the memory 404 are connected to each other and complete communication therebetween. The memory 404 is used for storing instructions and data, and the processor 403 is used for calling the instructions in the memory 404 and completing the following operations:

an auxiliary wakeup WUR module 402, configured to receive a WUR frame sent by a first device, where the WUR frame includes indication information indicating that the first device stops working after sending the WUR frame, or the indication information indicates that the first device is not to be replaced before sending a next WUR frame, or the indication information indicates that a third device is to replace the first device;

a processor 403 for determining to wake up the master communication module of the second device according to the WUR frame to re-associate with a third device replacing the first device through the woken up master communication module.

Optionally, in one embodiment, the WUR frame further includes identification information of a third device, the third device being a device that will replace the first device.

Optionally, in one embodiment, the WUR frame further comprises at least one of key information and encrypted content for the second device to verify authenticity of the WUR frame.

Optionally, in one embodiment, the WUR frame is a WUR beacon frame.

Optionally, in an embodiment, the wake-up radio WUR module 402 is configured to receive a WUR frame sent by a first device, specifically:

the WUR module 402 receives WUR frames at the operating channel of the WUR module.

The functions of the functional devices in the apparatus may be implemented by the steps executed by the second apparatus (e.g., STA) in the embodiment shown in fig. 4, and therefore, detailed working processes of the apparatus provided in the embodiment of the present invention are not repeated herein.

An embodiment of the present invention further provides a device, which may be a third device, as shown in fig. 9, where the device may include:

the processor 301 is configured to obtain device information of a second device and device information of the first device, where the third device is a device that replaces the first device, the second device is a device that is associated with the first device before the third device replaces the first device, the device information of the second device includes static identification information of the second device, broadcast address information of a WUR module of the second device, and a working channel of the WUR module of the second device, and the device information of the first device includes identification information of the first device;

a processor 301 further configured to generate a wake-up radio WUR frame, the WUR frame including indication information indicating that the third device is a device in place of the first device;

and the host communication module 302 is used for broadcasting a WUR frame in a working channel of the WUR module of the second device according to the broadcast address information of the WUR module of the second device, and the WUR frame is used for instructing the second device to wake up the host communication module of the second device so as to be re-associated with the third device through the awakened host communication module.

Optionally, in an embodiment of the invention, the WUR frame further comprises at least one of key information and encrypted content for the second device to verify authenticity of the WUR frame.

Optionally, in an embodiment of the present invention, the WUR frame is a WUR beacon frame.

In embodiments of the invention, the processor may include at least one to enable the generation of WUR frames.

The functions of the functional devices in the apparatus may be implemented by the steps executed by the first apparatus (e.g., AP) in the embodiment shown in fig. 5, and therefore, detailed working processes of the apparatus provided in the embodiment of the present invention are not repeated herein.

An embodiment of the present invention further provides a device, where the device is a second device, and as shown in fig. 10, the device may include:

a wake-up radio WUR module 402, configured to receive a WUR frame sent by a third device on an operating channel of the WUR module, where the WUR frame includes indication information, and the indication information is used to indicate that the third device is a device replacing the first device;

and a processor 403 configured to wake up the master communication module of the second device according to the WUR frame to re-associate with the third device through the woken-up master communication module.

The embodiment of the invention also provides that the WUR frame further comprises at least one item of key information and encrypted content, and the key information and the encrypted content are used for verifying the authenticity of the WUR frame by the second equipment.

The embodiment of the invention also provides a WUR frame as a WUR beacon frame.

The functions of the functional devices in the apparatus may be implemented by the steps executed by the second apparatus (e.g., STA) in the embodiment shown in fig. 5, and therefore, detailed working processes of the apparatus provided in the embodiment of the present invention are not repeated herein.

The master communication module in the devices provided in fig. 9 and 10 may be a Wi-Fi module, which may provide a Wi-Fi interface, which may be used to send WUR frames and to send or receive other messages, such as Wi-Fi frames; the auxiliary wake-up module can be a WUR module, provides a WUR interface, and is used for receiving WUR frames sent by other devices and sending wake-up signals to the main communication module after the WUR frames are received so as to wake up the main communication module. To enable communication between the AP and the STA.

In one embodiment of the invention, the device may further comprise an antenna. The primary communication module and the secondary wake-up module may share one or more antennas.

Embodiments of the present invention also provide a computer-readable storage medium including instructions that, when executed on a device, cause the device to perform a method as performed in fig. 4 or fig. 5.

Embodiments of the invention also provide a computer program product or computer program comprising instructions which, when run on a computer, cause the computer to perform a method as performed in fig. 4 or fig. 5.

Embodiments of the present invention also provide a system, which may include at least one of the devices described in fig. 10.

In the various embodiments of the invention described above, implementation may be in whole or in part via software, hardware, firmware, or any combination thereof. When implemented in software, 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 loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the invention to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable medium to another, for example, from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid state disk), among others.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A method of waking a device, the method comprising:

a first device generating a wake-up radio WUR frame, the WUR frame including indication information indicating that the first device has stopped working after sending the WUR frame, or the indication information indicating that the first device is not to be replaced before sending a next WUR frame, or the indication information indicating that a third device is to replace the first device;

the first device sends the WUR frame to a WUR module of a second device associated with the first device, and the WUR frame is used for the second device to determine to wake up a master communication module of the second device so as to be re-associated with a third device replacing the first device through the woken-up master communication module.

2. The method of claim 1 wherein the WUR frame further includes identification information for a third device, the third device being the device that will replace the first device.

3. The method of claim 1 wherein the WUR frame further includes at least one of key information and encrypted content for the second device to verify the authenticity of the WUR frame.

4. The method of any of claims 1-3 wherein the WUR frames are WUR beacon frames.

5. The method of any of claims 1-3, the first device sending the WUR frame to a WUR module of a second device associated with the first device, specifically:

the first device broadcasts the WUR frame on a working channel of a WUR module of the second device according to the broadcast address information of the WUR module of the second device.

6. A method of waking a device, the method comprising:

a wakeup radio WUR module of a second device receives a WUR frame sent by a first device, wherein the WUR frame comprises indication information, the indication information indicates that the first device stops working after sending the WUR frame, or the indication information indicates that the first device is not replaced before sending the next WUR frame, or the indication information indicates that a third device is to replace the first device;

and the second equipment determines to wake up the main communication module of the second equipment according to the WUR frame so as to be associated with a third equipment replacing the first equipment through the woken-up main communication module.

7. The method of claim 6 wherein the WUR frame further includes identification information for a third device, the third device being the device that will replace the first device.

8. The method of claim 6 wherein the WUR frame further includes at least one of key information and encrypted content for the second device to verify the authenticity of the WUR frame.

9. The method of any of claims 6-8, wherein the WUR frame is a WUR beacon frame.

10. The method of any of claims 6-8, wherein a wake-up radio (WUR) module of the second device receives a WUR frame sent by the first device, specifically:

the second device receives the WUR frame at an operating channel of a WUR module of the second device.

11. A method of waking a device, the method comprising:

the method comprises the steps that a third device acquires device information of a second device and device information of a first device, the third device is a device replacing the first device, the second device is a device which is associated with the first device before the third device replaces the first device, the device information of the second device comprises static identification information of the second device, broadcast address information of a WUR module of the second device and a working channel of the WUR module of the second device, and the device information of the first device comprises the identification information of the first device;

the third device generating a wake-up radio WUR frame, the WUR frame including indication information indicating that the third device is a device replacing the first device;

and the third equipment broadcasts the WUR frame in a working channel of the WUR module of the second equipment according to the broadcast address information of the WUR module of the second equipment, and the WUR frame is used for indicating the second equipment to wake up the master communication module of the second equipment so as to be re-associated with the third equipment through the wakened master communication module.

12. The method of claim 11 wherein the WUR frame further includes at least one of key information and encrypted content for the second device to verify the authenticity of the WUR frame.

13. The method of claim 11 or 12 wherein the WUR frame is a WUR beacon frame.

14. A method of waking a device, the method comprising:

a wakeup radio WUR module of a second device receives a WUR frame broadcast by a third device at an operating channel of the WUR module of the second device, wherein the third device is a device replacing a first device, the second device is a device which is associated with the first device and is before replacing the first device, and the WUR frame comprises indication information which is used for indicating that the third device is a device replacing the first device;

and the second equipment awakens the main communication module of the second equipment according to the WUR frame so as to be associated with the third equipment again through the awakened main communication module.

15. The method of claim 14 wherein the WUR frame further includes at least one of key information and encrypted content for the second device to verify the authenticity of the WUR frame.

16. The method of claim 14 or 15 wherein the WUR frame is a WUR beacon frame.

17. An apparatus, characterized in that the apparatus is a first apparatus, comprising:

a processor configured to generate a wake-up radio WUR frame, the WUR frame including indication information indicating that the first device has stopped working after sending the WUR frame, or the indication information indicating that the first device is not to be replaced before sending a next WUR frame, or the indication information indicating that a third device is to replace the first device;

and the WUR frame is used for the second device to determine to wake up the master communication module of the second device so as to be re-associated with a third device replacing the first device through the awakened master communication module.

18. The device of claim 17, wherein the WUR frame further includes identification information for a third device, the third device being a device that will replace the first device.

19. The device of claim 17 wherein the WUR frame further includes at least one of key information and encrypted content for the second device to verify the authenticity of the WUR frame.

20. The device of any of claims 17-19, wherein the WUR frame is a WUR beacon frame.

21. The device of any of claims 17-19, the host communication module to send the WUR frame to a WUR module of a second device associated with the first device, in particular:

the host communication module broadcasts the WUR frame on a working channel of the WUR module of the second device according to the broadcast address information of the WUR module of the second device.

22. An apparatus, characterized in that the apparatus is a second apparatus, the apparatus comprising:

a wake-up radio WUR module for receiving a WUR frame sent by a first device, the WUR frame including indication information indicating that the first device stops working after sending the WUR frame, or the indication information indicating that the first device is not to be replaced before sending a next WUR frame, or the indication information indicating that a third device is to replace the first device;

and the processor is used for determining to wake up the master communication module of the second device according to the WUR frame so as to be associated with a third device replacing the first device through the woken-up master communication module.

23. The device of claim 22, wherein the WUR frame further includes identification information for a third device, the third device being a device that will replace the first device.

24. The device of claim 22 wherein the WUR frame further includes at least one of key information and encrypted content for the second device to verify the authenticity of the WUR frame.

25. The device of any one of claims 22-24, wherein the WUR frame is a WUR beacon frame.

26. The device of any of claims 22-24, the wake-up radio WUR module to receive a first device send WUR frame, specifically:

the WUR module receives the WUR frame on a working channel of the WUR module.

27. An apparatus, characterized in that the apparatus is a third apparatus, the apparatus comprising:

a processor, configured to obtain device information of a second device and device information of a first device, where the third device is a device that replaces the first device, the second device is a device that is associated with the first device before the third device replaces the first device, the device information of the second device includes static identification information of the second device, broadcast address information of a WUR module of the second device, and a working channel of the WUR module of the second device, and the device information of the first device includes identification information of the first device;

the processor is further configured to generate a wake-up radio WUR frame, the WUR frame including indication information indicating that the third device is a device replacing the first device;

and the WUR frame is used for indicating the second equipment to wake up the master communication module of the second equipment so as to be associated with the third equipment again through the wakened master communication module.

28. The device of claim 27 wherein the WUR frame further includes at least one of key information and encrypted content for the second device to verify the authenticity of the WUR frame.

29. The device of claim 27 or 28, wherein the WUR frame is a WUR beacon frame.

30. An apparatus, characterized in that the apparatus is a second apparatus, the apparatus comprising:

the method comprises the steps that a wireless WUR module is awakened to receive a WUR frame broadcasted by a third device on a working channel of the WUR module, the third device is a device replacing a first device, the second device is a device which is associated with the first device before the third device replaces the first device, and the WUR frame comprises indication information which is used for indicating that the third device is a device replacing the first device;

and the processor is used for awakening the main communication module of the second equipment according to the WUR frame so as to be associated with the third equipment again through the awakened main communication module.

31. The device of claim 30 wherein the WUR frame further includes at least one of key information and encrypted content for the second device to verify the authenticity of the WUR frame.

32. The device of claim 30 or 31, wherein the WUR frame is a WUR beacon frame.

33. A system characterised in that the system comprises an apparatus according to any one of claims 17 to 21 and an apparatus according to any one of claims 22 to 26 or the system comprises an apparatus according to any one of claims 27 to 29 and an apparatus according to any one of claims 30 to 32.