CN109314926B - A communication method and wireless device - Google Patents

Abstract

The present application discloses a communication method, which is applied to a first device. The method includes: receiving a first message and/or a second message sent by a second device, wherein both the first message and the second message contain first indication information; The state of the second interface of the second device indicated in the first indication information; if the first indication information indicates that the second interface of the second device is in an awake state, send a notification to the first The second device sends a third message, where the third message is related to the uplink data of the first device, so as to perform data communication between the first device and the second device; if the first indication information indicates The second interface of the second device is in a dormant state, then a fourth message is sent to the second device, where the fourth message is used to wake up the second interface of the second device, so that the first device Data communication is performed with the second device through the second interface of the awakened second device.

Description

A communication method and wireless device

This application claims the priority of the Chinese patent application with the application number 201611002160.5 and the invention titled "A notification method and apparatus for a message" filed with the China Patent Office on November 14, 2016, and the Chinese patent application filed on April 6, 2017 Bureau, application number 201710221939.4, and the title of the Chinese patent application entitled "A communication method and wireless device", the entire contents of which are incorporated in this application by reference.

technical field

The present application relates to the field of communication, and in particular, to a communication method and a wireless device.

Background technique

With the evolution of wireless local area network (Wireless Local Area Network, WLAN) standards, in a wireless fidelity (Wireless Fidelity, Wi-Fi) network, terminal devices (such as workstations, STAs, Stations) do not send and receive messages (such as No data stage), a large part of the energy will be wasted in the idle listening channel when there is no received signal. It can be seen that, in the communication process between the wireless access point (Access Point, AP) of the Wi-Fi network and the terminal, a communication method for reducing the power consumption of the device is required.

In the prior art communication scheme for reducing power consumption of equipment, a low-power wake-up receiver (Low Power Wake Up Radio, WUR) is used on the terminal and AP to replace the 802.11 main transceiver module to listen when the medium is idle. channel.

For example, an 802.11 main transceiver module and a WUR module are set in both the terminal and the AP. When the terminal's 802.11 main transceiver module enters deep sleep, the low-power WUR of the terminal wakes up and starts to work. When the AP needs to communicate with the terminal, the AP sends a WUR message, that is, a Wake Up Packet (WUP), to the WUR of the terminal. The WUR of the terminal can go to sleep, and the AP communicates with the 802.11 main transceiver module of the awake terminal; the 802.11 main transceiver module of the terminal will go to sleep after the communication with the AP is completed. WUP in order to wake up the 802.11 main transceiver module of the terminal again. When the terminal needs to communicate with the AP, the terminal sends a WUR message, that is, a wake-up frame, to the WUR of the AP. The WUR of the AP wakes up the 802.11 main transceiver module of the AP after correctly receiving the WUP sent to itself, and then the WUR of the AP goes to sleep, and the terminal Then it communicates with the 802.11 main transceiver module of the awakened AP; the 802.11 main transceiver module of the AP will go to sleep after the communication with the terminal is completed, and the WUR of the AP wakes up and starts to monitor whether there is a WUP sent to itself, so as to wake up the AP's WUP again. 802.11 main transceiver module.

However, in the above communication method, if a terminal wakes up the 802.11 main transceiver module of the AP through the WUR message, the WUR of the AP will enter the sleep state, then the AP can no longer receive the WUP sent by other terminals through the WUR. When the terminal sends WUP to the AP, it will not receive the response from the AP, so that other terminals will think that the AP cannot communicate, resulting in the failure to wake up the AP, and the two parties cannot conduct data communication.

SUMMARY OF THE INVENTION

In view of this, the present application provides a communication method and a wireless device to improve the efficiency of data communication between an AP and a terminal.

A first aspect of the present application provides a communication method, applied to a first device, which includes the following steps: receiving a first message and/or a second message containing first indication information sent by a second device, and determining the The state of the second interface of the second device indicated in the indication information, if the first indication information indicates that the second interface of the second device is in the awake state, send the message to the second device a third message, where the third message is related to the uplink data of the first device, so as to perform data communication between the first device and the second device, if the first indication information indicates that the first device The second interface of the second device is in a dormant state, then a fourth message is sent to the second device, where the fourth message is used to wake up the second interface of the second device, so that the first device communicates with the second device. Data communication is performed between the second devices through the second interface of the awakened second device. It can be seen that in this application, the first device determines the state of the second interface of the second device by receiving the message sent by the second device that can indicate the state of the second interface of the second device, and then the first device A device decides whether it needs to wake up the second interface of the second device or directly perform data communication. Therefore, in this application, the first device can know the state of the second interface of the second device in time and perform data communication or wake up before performing data communication. communication, thereby realizing the purpose of effectively waking up the second interface of the second device and performing data communication.

A second aspect of the present application provides a communication method, applied to a second device, which includes the following steps: sending a first message including first indication information to the first device through a first interface or a second interface, and/or , sending a second message including first indication information to the first device through the second interface, and the first indication information can indicate the state of the second interface of the second device. Therefore, in this application, the second device notifies the first device by sending a message indicating the state of the second interface of the second device to the first device, and the first device decides whether to wake up the second device of the second device. The interface performs data communication, and realizes the purpose of effectively awakening the second interface of the second device for data communication.

A third aspect of the present application provides a wireless device, which includes the following structures: a first communication module corresponding to a first interface of the wireless device, a second communication module corresponding to a second interface of the wireless device, storing an application program, and A memory for data generated by running an application program and a processor for executing the application program to realize the following functions: receiving a first message and/or a second message sent by a second device, the first message and the The second messages all contain first indication information; determine the state of the second interface of the second device indicated in the first indication information; if the first indication information indicates the state of the second interface of the second device When the second interface is in the awake state, a third message is sent to the second device through the second interface of the wireless device, and the third message is related to the uplink data of the wireless device, so that the wireless device can communicate with the wireless device. Data communication is performed between the second devices; if the first indication information indicates that the second interface of the second device is in a dormant state, the first interface or the second interface of the wireless device is sent to the second device. The second device sends a fourth message, where the fourth message is used to wake up the second interface of the second device, so that the connection between the wireless device and the second device passes through the second interface of the awakened second device data communication. It can be seen that in this application, the wireless device determines the state of the second interface of the second device by receiving the message sent by the second device that can indicate the state of the second interface of the second device, and then the wireless device determines the state of the second interface of the second device. Decide whether to wake up the second interface of the second device or directly perform data communication. Therefore, in the present application, the wireless device can know the state of the second interface of the second device in time and perform data communication or wake up and then communicate. This achieves the purpose of effectively waking up the second interface of the second device for data communication.

A fourth aspect of the present application provides a wireless device, including the following structures: a first communication module corresponding to a first interface of the wireless device, a second communication module corresponding to a second interface of the wireless device, A memory for storing an application program and data generated by the operation of the application program, and a processor for executing the application program to realize the following functions: sending the first interface to the first device through the first interface or the second interface of the wireless device message, and/or sending a second message to the first device through the second interface of the wireless device; wherein the first message and the second message both contain first indication information, and the first indication information Indicates the state of the second interface of the wireless device. Therefore, in this application, the wireless device notifies the first device by sending a message indicating the state of the second interface of the wireless device to the first device, and the first device decides whether to wake up the second interface of the wireless device for data processing Communication, realizes the purpose of effective wake-up of the second interface of the wireless device for data communication.

A fifth aspect of the present application provides a basic service set, which may include the following structure: at least one first device and one second device;

Wherein, the second device sends a first message to each of the first devices through its first interface or second interface, and/or the second device sends a first message to each of the first devices through its second interface The device sends a second message, the first device receives the first message and/or the second message sent by the second device, and both the first message and the second message contain first indication information; the The first device determines the state of the second interface of the second device indicated in the first indication information, and if the first indication information indicates that the second interface of the second device is in an awake state, then The first device sends a third message to the second device, the third message is related to the uplink data of the first device, so as to perform data communication between the first device and the second device ; if the first indication information indicates that the second interface of the second device is in a dormant state, the first device sends a fourth message to the second device, and the fourth message is used to wake up the first device The second interface of the two devices, so that data communication is performed between the first device and the second device through the second interface of the awakened second device. It can be seen that in this application, the second device in a basic service set notifies the first device by sending a message indicating the state of the second interface of the second device to the first device, and the first device decides whether to wake up the first device. The second interface of the two devices performs data communication, so as to realize the purpose of effectively waking up the second interface of the second device and performing data communication.

In an implementation manner, if the first device does not receive the first message and the second message, the first device further sends the third message to the second device. Thus, the first device attempts data communication by sending a third message to the second device.

In an implementation manner, after the first device sends the third message to the second device after a preset interval, if the first device does not receive a message corresponding to the third message sent by the second device In response to a reply message, the first device sends the fourth message to the second device. Thus, the first device can know that the second interface of the second device is in a dormant state without receiving the reply message, and then uses the fourth message to wake up the second interface of the second device to implement data communication.

In an implementation manner, the interval duration is longer than the duration between when the first device sends the third message to when the first device receives a reply message corresponding to the third message in a normal communication state. Therefore, the first device sends the fourth message after determining that the third message is not received by the second device, indicating that the second interface of the second device is in a dormant state, thereby preventing the channel for message transmission from being occupied by the prematurely sent fourth message , the second device cannot send a reply message to the first device in time, resulting in data communication failure.

In an implementation manner, the first indication information indicating that the second interface of the second device is in an awake state means: the first indication information indicates that the second interface of the second device is currently in an awake state, Or the second interface of the second device is in an awake state within a preset time period and the preset time period is valid. Thus, the first device receives the message sent by the second device that can indicate the state of the second interface of the second device, thereby judging the state of the second interface of the second device, such as currently in an awake state Or it is in the awake state within the preset time period and the preset time period is valid, and then the first device decides to directly conduct data communication. Therefore, in this application, the first device can timely learn the state of the second interface of the second device and Data communication is carried out, thereby realizing the purpose of effectively waking up the second interface of the second device and carrying out data communication.

In an implementation manner, the first indication information indicating that the second interface of the second device is in a dormant state means that the first indication information indicates that the second interface of the second device is currently in a dormant state, Or the second interface of the second device is in a dormant state within a preset time period. Thus, the first device receives the message sent by the second device that can indicate the state of the second interface of the second device, thereby judging the state of the second interface of the second device, such as currently in a dormant state Or in a dormant state within a preset time period, and then the first device decides to first wake up the second interface of the second device and then perform data communication. Therefore, in this application, the first device can timely know where the second interface of the second device is located. state and perform data communication, thereby realizing the purpose of effectively waking up the second interface of the second device and performing data communication.

In an implementation manner, the first interface of the first device is an interface corresponding to WUR, the second interface of the first device is an interface corresponding to an 802.11 main transceiver module, and the first interface of the second device is WUR The corresponding interface, the second interface of the second device is the interface corresponding to the 802.11 main transceiver module. Thus, the first device can effectively wake up the 802.11 main transceiver module and its corresponding interface of the second device, and realize data communication.

In an implementation manner, the first message is a WUR message, and the second message is a Wi-Fi message. Thus, the first device can effectively wake up the second interface of the second device by using the WUR message and implement data communication.

In an implementation manner, the first device is a terminal, and the second device is an AP. In this way, the terminal can effectively wake up the second interface of the AP (that is, wake up the 802.11 main transceiver module of the AP), and realize data communication.

In an implementation manner, the second device sends the first message to the first device through the first interface or the second interface, and may send the first message to the first device through the first interface or the second interface based on a preset first time period. The first device sends the first message. In this way, the second device can periodically notify the first device by sending a message indicating the state of the second interface of the second device to the first device, and the first device can determine whether to miss the first device through the cycle time message, and the first device decides whether to wake up the second interface of the second device for data communication, so as to realize the purpose of effectively awakening the second interface of the second device for data communication.

In an implementation manner, the second device sends the second message to the first device through a second interface, and may send the second message to the first device through the second interface based on a preset second time period Second message. In this way, the second device can periodically notify the first device by sending a message indicating the state of the second interface of the second device to the first device, and the first device can determine whether to miss the second device through the cycle time message, and the first device decides whether to wake up the second interface of the second device for data communication, so as to realize the purpose of effectively awakening the second interface of the second device for data communication.

In an implementation manner, the preset time period in the first indication information is set by the second device based on a preset communication protocol between the first device and the second device; or, the The preset time period is set by the second device based on the time value indicated in the first indication information. Therefore, the first device can effectively wake up the second interface of the second device and realize data communication.

A sixth aspect of the present application provides a communication method, the application terminal side may include the following steps: a first device receives a first message sent by a second device through a first interface; or, the first device receives a first message through a second interface The second message sent by the second device, and both the first message and the second message carry first indication information, the first indication information indicates the state of the second device at a preset time, and the state is It means that the second interface of the second device will be in the awake state, or the sleep state, or will be in the awake state for the preset time; after that, according to the first indication information, if all the If the second interface is in the awake state, or will always be in the awake state at the preset time, the first device sends a third message to the second device; the third message is an uplink message, or notifies all the second device has an uplink message that needs to be received; or, if the second interface of the second device is in a dormant state, the first device sends a fourth message to the second device; the first device The four messages are used to wake up the second interface of the second device, and the second interface of the second device communicates with the first device after waking up.

A seventh aspect of the present application provides a communication method, which is applied to the AP side. The method may include the following steps: a second device sends a first message and a second message; the first message and the second message both carry First indication information, the first indication information indicates the state of the second device at a preset time; the first message is received by the first device through the first interface, and the second message is received by the second device A device receives through the second interface; the state of being in means that the second interface of the second device will be in the awake state, or the sleep state, or will be in the awake state all the time within the preset time.

An eighth aspect of the present application provides a first device, including: a first interface for the first device to receive a first payload of a first message sent by a second device; the first message includes a first preamble and the first load; the bandwidth used by the first pilot is greater than the bandwidth used by the first load; a second interface is used for the first device to receive a second message sent by the second device; the Both the first message and the second message carry first indication information, and the first indication information indicates the state of the second device at a preset time; the state refers to the state of the second device The second interface of the device will be in an awake state, or a dormant state, or will always be in an awake state at the preset time; a processor for the first device to parse the first message or the second message , and according to the first indication information carried in the first message or the second message, it is determined whether a third message or a fourth message needs to be generated; the third message is an uplink message, or notifies the second message The device has an uplink message that needs to be received; the fourth message is used to wake up the second interface of the second device, and the second interface of the second device communicates with the first device after waking up ; According to the first indication information, if the second interface of the second device is in an awake state or will always be in an awake state at the preset time, the processor of the first device generates the third message; or, if the second interface of the second device is in a dormant state, the processor of the first device generates the fourth message; the ability of the first interface to send the first payload of the fourth message, the first device sends the first payload of the fourth message through the first interface; If a device does not have the ability to send the first payload of the fourth message through the first interface, the first device should have the first load to send the fourth message through the second interface load capacity; the first device is further configured to send the third message and the first preamble of the fourth message through the second interface; the first device further includes a memory for storing program code and instructions; and an antenna for sending and receiving messages from a wireless medium.

A ninth aspect of the present application provides a second device, including: a first interface, where if the first interface has the ability to send a first payload of a first message, the first interface is configured to send the first payload of the first message. the first payload of a message; the first message includes a first preamble and the first payload, the bandwidth used by the first preamble is greater than the bandwidth used by the first payload; the second interface is used for all the second device sends the second message, or sends the first payload of the first message; if the first interface does not have the capability to send the first payload of the first message, the first The second interface can also be used to send the first payload of the first message; the processor is configured to generate the first message and the second message; the first message and the second message both carry the an indication information, the first indication information indicates the state of the second device at a preset time; the state means that the second interface of the second device is in an awake state or in a dormant state The second device further includes a memory for storing program codes and instructions; and an antenna for sending and receiving messages from the wireless medium.

In an implementation manner, if the first device has not received the first message and the second message, or, the first device has received the first message or the second message sent by the second device the second message, but the preset time has passed, the first device sends the third message to the second interface of the second device for the first device to attempt to communicate with the first device The second interface of the two devices communicates; within the first interval, if the first device does not receive a reply message for the third message sent by the second device to the first device, the first device will The device sends the fourth message to the first interface of the second device after the first interval time, for the first device to wake up the second interface of the second device; the first The interval time is greater than the interval for sending the reply message of the third message to the first device after the second device receives the third message, so as to prevent the first device from receiving the third message The fourth message is sent before the reply message to the message.

In an implementation manner, the first message and the second message are messages sent periodically, and are used for the first device to identify whether the first message or the second message is missed.

In an implementation manner, the preset time is the time agreed between the first device and the second device, or the time indicated in the first indication information; it is used by the first device to determine the whether the first indication information carried in the first message and the second message is valid.

In one implementation, if the first device has not received the first message through the first interface; and, the second device has not received the second message through the second interface; or , the first device has received the first message or the second message, but has exceeded the preset time, then the first device sends a message to the second device through the second interface The second interface sends the third message; within the first interval, if the first device does not receive a reply message for the third message sent by the second device, then when the first device has When the capability of sending the first payload through the first interface, the first device sends the fourth device through the first interface to the first interface of the second device after the first interval time message; when the first device does not have the ability to send the first payload through the first interface, the first device sends a message to the second device through the second interface after the first interval time The first interface of the device sends the fourth message; the first interval is greater than the interval for sending the reply message of the third message to the first device after the second device receives the third message .

In an implementation manner, the second interface in the second device is used to receive a third message; the third message is an uplink data message, or a message notifying the second device that an uplink message needs to be received; in the second device a first interface for receiving the first payload of the fourth message, for waking up the second interface of the second device; a processor in the second device for parsing the third message, and/ or fourth message.

It can be seen that in this application, the first device determines the state of the second interface of the second device by receiving the message sent by the second device that can indicate the state of the second interface of the second device, and then the first device A device decides whether it needs to wake up the second interface of the second device or directly perform data communication. Therefore, in this application, the first device can know the state of the second interface of the second device in time and perform data communication or wake up before performing data communication. communication, thereby realizing the purpose of effectively waking up the second interface of the second device and performing data communication.

Description of drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only These are some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without any creative effort.

FIG. 1 is a schematic diagram of the composition structure of a basic service set in WLAN;

2 is a schematic diagram of communication between a terminal and an AP;

Fig. 3 is a schematic diagram of a WUR frame structure;

4 to 12 are schematic diagrams of communication between a first device and a second device in an embodiment of the present application, respectively;

13 is a flowchart of communication between a first device and a second device in an embodiment of the application;

14 to 16 are respectively application example diagrams of the embodiments of the present application;

FIG. 17 is a schematic structural diagram of a wireless device according to an embodiment of the application;

FIG. 18 is a schematic structural diagram of another wireless device provided by an embodiment of the present application.

Detailed ways

The present application is applied to a WLAN, a WLAN may include a basic service set (Basic Service Set, BSS), and the network nodes in the basic service set include an AP and a terminal. Each basic service set may contain one AP and multiple terminals associated with the AP, as shown in FIG. 1 .

AP, which can be an access point or a hotspot, etc. An AP is an access point for a mobile user terminal to access a wired network. As shown in FIG. 1 , multiple terminals are connected to the network through the AP. APs are mainly deployed in homes, buildings, and campuses, with a typical coverage radius ranging from tens of meters to hundreds of meters. Of course, they can also be deployed outdoors. AP is equivalent to a bridge connecting the Internet and a wireless network. Its main function is to connect various wireless network clients together, and then connect the wireless network to the Internet. Specifically, the AP may be a terminal device or a network device with a Wi-Fi chip.

The terminal may be a user equipment (user equipment, UE), a mobile station (mobile station, MS), a mobile terminal (mobile terminal), a computer, a microcomputer, etc., or a 5G terminal. For example, the terminal may be a mobile phone (or "cellular" phone), a mobile computer, a computer with a mobile terminal, a smart watch, etc., for example, the terminal may also be portable, pocket-sized, hand-held, computer built-in, or vehicle-mounted mobile devices that exchange voice and/or data with wireless access equipment. This application is not limited to this, for example, the terminal also includes a wired access terminal with a multi-bearer feature.

Figure 2 shows a schematic diagram of the communication between the terminal and the AP using the 802.11 main transceiver module and the WUR. Wherein, both the AP and the terminal may include the 802.11 main transceiver module and the WUR. The WUR is used to receive the wake-up frame and wake up the 802.11 main transceiver module of the device where it is located based on the wake-up frame. If the WUR is capable of sending WUR messages such as wake-up frames, the WUR can also be used to send WUR messages. The 802.11 main transceiver module is the Wi-Fi module, which can be used to send and receive Wi-Fi signals. When the WUR does not have the ability to send WUR messages, the 802.11 main transceiver module needs to have the ability to send WUR messages and can be used to send WUR signals; when the device uses the 802.11 main transceiver module to send WUR messages, the WUR's WUR message sending capability Not required. Of course, when the AP does not consider energy saving, WUR is not necessary.

Among them, WUR can reduce energy consumption compared with the 802.11 main transceiver module, mainly because the reception and decoding of WUR is far simpler than that of 802.11 messages, namely Wi-Fi messages, and compared with the 802.11 main transceiver module, it adopts narrowband transmission. Specifically, the WUR usually adopts modulation modes that are easy to demodulate at the receiving end, such as On Off Keying (OOK) modulation and Binary Frequency Shift Keying (2FSK) modulation. Some literatures point out that OOK and 2FSK are the two modulation methods with the lowest demodulation complexity. Taking OOK modulation as an example, the receiving end judges whether the information carried by the signal is received by the presence or absence of energy. For example, the indication is 1 when there is energy, and the indication is 0 when there is no energy. However, Wi-Fi messages use both Phase Shift Keying (PSK) modulation and Orthogonal Frequency Division Multiplexing (OFDM) modulation with high demodulation complexity. Complex channel processing operations, such as Inverse Fast Fourier Transform (IFFT), consume a lot of energy.

The following describes the design of the WUR. As shown in FIG. 3 , the WUR frame structure can be divided into a first pilot field and a first payload field.

The fields of the first preamble may include at least three fields: L-STF, L-LTF and L-SIG, and the first preamble is the 802.11 preamble (802.11 preamble), that is, the preamble sequence that can be understood by traditional 802.11 devices, It is sent on a bandwidth of 20MHz or an integer multiple of 20MHz (such as 40MHz, 80MHz, 160MHz), so that the 802.11 device can determine that the current message (ie WUP) is a Wi-Fi message, which is compatible with traditional 802.11 devices. The 802.11 device that hears the 802.11 preamble can obtain the time that the WUP occupies the channel according to the information in the 802.11 preamble (such as L-LTF or Length field information), and does not try to access the channel during this time to avoid interfering with the WUP in transmission.

For example, the Length field information is 12 bits, indicating the number of bytes to be transmitted in the data part of the message. In other words, according to the information indicated in the Length field and the 802.11 preamble L-SIG, that is, the information indicating the message transmission rate in the Signal field, the remaining time required for transmitting the message can be calculated.

The first load is the Payload part of WUP, which adopts a modulation method with low demodulation complexity, such as OOK modulation, that is, Binary Amplitude Shift Keying (2ASK) modulation, and uses narrowband transmission, such as 1MHz channel, 2MHz channel, 5MHz channel (traditional 802.11 minimum channel bandwidth is 20MHz), which enables the receiver to further reduce energy consumption.

Among them, the payload of WUP includes Wake-Up Preamble and MAC (medium Access Control, medium access control) part, the former function is similar to the traditional 802.11 pilot, which can be used for the WUR of the device to identify the WUR signal; the latter is the same as the Wi-Fi message. is similar to the MAC part of , and may further include MAC Header, Frame Body, and Frame Check Sequence (FCS). Here, the MAC Header carries at least the identification information of the receiving end, and the Frame Body can carry some instructions, control information, etc., and the FCS belongs to the verification information, which is used to judge whether the message is received in error.

The purpose of setting WUR in the terminal is to reduce the overall energy consumption of the device, and in some scenarios, APs also have requirements to save energy, so WUR can also be equipped to further reduce energy consumption, as shown in Figure 2, in some temporary The APs in the deployed network have no external power supply, and the 802.11 main transceiver module of the AP with WUR can enter the sleep state when there is no data transmission and reception, so as to achieve the purpose of energy saving. When the terminal has uplink (UL) data to be sent, it first sends a WUP message to the WUR of the AP to wake up the 802.11 main transceiver module of the AP, and then the terminal and the AP communicate through the 802.11 main transceiver module. As shown in Figure 1, when terminal 1 uses the AP's WUR to wake up the 802.11 main transceiver module of the AP for data transmission by sending WUP, if other terminals such as terminal 2 also have uplink data to transmit at this time, terminal 2 will also send the AP's The WUR sends the WUP to wake up the 802.11 main transceiver module of the AP, but because the AP's 802.11 main transceiver module has woken up at this time, and the AP's WUR may have gone to sleep, the AP cannot receive the WUP sent by the terminal through its WUR. That is to say, in this scenario, the terminal 2 may not be able to wake up the AP effectively, so that the terminal 2 cannot perform data communication with the AP.

To this end, in this embodiment, the following implementation scheme is proposed for the communication structure in FIG. 2 . As shown in FIG. 4 , the first device and the second device perform data communication with the second interface through respective first interfaces. In the first device, usually only one of the first interface and the second interface is in the awake state at the same time, and the other is in the dormant state, and the first interface can be used to wake up the second interface; in the second device, the first interface and the second interface at the same time. Usually only one interface is in the awake state and the other is in the dormant state, and the first interface can be used to wake up the second interface.

Wherein, if the first interface of the second device has the ability to send a first message (such as a WUR message), the second device sends a second interface that contains instructions to the second device to the first interface of the first device through its first interface The message in the state (which is a kind of WUR message), that is, the first message containing the first indication information, the first device uses its first interface to receive the first message; the second device uses its second interface to send to the first device. The second interface of the device sends a message including a message indicating the state of the second interface of the second device, that is, a second message including the first indication information, and the first device uses its second interface to receive the second message. If the first interface of the second device does not have the ability to send the first message, the second device may send the first interface of the first device through its second interface a message containing a state indicating the state of the second interface of the second device. message (for a WUR message).

As shown in FIG. 5 , the second device may periodically send a first message by using the first interface, and the first indication information in the first message indicates whether the second interface of the second device is currently in a dormant state or an awake state, or is in a pre-defined state. It is assumed that the state in the time period is the sleep state or the awake state, and then the first device can receive the first message through its first interface.

As shown in FIG. 6 , the second device may periodically send a second message by using the second interface, and the first indication information in the second message indicates that the second interface of the second device is currently in a dormant state or an awake state, or is in a pre-defined state. It is assumed that the state in the time period is the sleep state or the awake state, and then the first device can receive the second message through its second interface.

As shown in FIG. 7 , the second device may periodically send the first message by using the first interface, and periodically send the second message by using the second interface, and the first indication information in each of the first message and the second message indicates the first message. Whether the second interface of the second device is currently in a dormant state or an awake state, or whether the state in a preset time period is a dormant state or an awake state, after that, the first device can use its first interface to receive the first message, and use the The second interface receives the second message.

Wherein, in the examples shown in FIGS. 5-7 , the time points at which the second device sends the first message and the second message may be different. For example, after sending one message (the first message or the second message), there may be an interval Time to send another message (either the second message or the first message). In addition, the periods at which the second device sends the first message and the second message may be the same or different.

It should be noted that, in the examples shown in FIGS. 5-7 , when the second device sends the first message, if the first interface is in a dormant state, it temporarily wakes up the first interface to send the first message; the second device sends the second When sending a message, if the second interface is in a dormant state, the second interface is temporarily woken up to send the second message.

However, if the first interface in the second device does not have the ability to send the first message, the second device sends the first message through its second interface, and the second device still sends the second message through its second interface. After that, the first device still uses its first interface to receive the first message, and the first device uses its second interface to receive the second message.

That is to say, the first interface in the second device may not have the ability to send the first message, then in the second device, when the first interface is in the dormant state and the second interface is in the awake state, the second device sends the first message through the second device. The interface sends the first message and/or the second message; when the first interface is in an awake state and the second interface is in a dormant state, the second device temporarily wakes up the second interface to send the first message and/or the second message.

As shown in FIG. 8 , the second device may periodically send a first message by using the second interface, and the first indication information in the first message indicates whether the second interface of the second device is currently in a dormant state or an awake state, or is in a pre-defined state. It is assumed that the state in the time period is the sleep state or the awake state, and then the first device can receive the first message through its first interface.

As shown in FIG. 9 , the second device may periodically send a second message by using the second interface, and the first indication information in the second message indicates whether the second interface of the second device is currently in a dormant state or an awake state, or is in a pre-defined state. It is assumed that the state in the time period is the sleep state or the awake state, and then the first device can receive the second message through its second interface.

As shown in FIG. 10 , the second device may use the second interface to periodically send the first message and the second message, respectively, the first message and the second message are sent at a certain interval, and the first message and the second message are respectively The first indication information in the second interface indicates whether the second interface of the second device is currently in a dormant state or an awake state, or whether the state within a preset time period is a dormant state or an awake state, after which the first device can use its first The interface receives the first message and utilizes the second interface to receive the second message.

Wherein, in the examples shown in FIG. 8 to FIG. 10 , the time points at which the second device sends the first message and the second message through the second interface are different. After sending one message (the first message or the second message), Another message (either the second message or the first message) is sent at intervals. In addition, the periods at which the second device sends the first message and the second message may be the same or different.

It should be noted that, in the examples shown in FIG. 8 to FIG. 10 , when the second device sends the first message and the second message, if the second interface is in a dormant state, it can temporarily wake up the second interface to send the first message and the second message. Two news.

In addition, when the first device receives the first indication information indicating that the second interface of the second device is in an awake state or is in an awake state within a preset time period and the preset time period is valid, the second interface of the first device sends a message to the first device. The second interface of the second device sends a message related to the uplink data, that is, a third message, such as the uplink data itself or a frame of the query type that informs it that there is uplink data to receive, such as RTS, Poll, etc., as shown in Figure 11 When the first device receives the first indication information indicating that the second interface of the second device is in a dormant state or is in a dormant state within a preset time period and the preset time period is valid, the first device sends a message to the first device of the second device The interface sends a fourth message capable of waking up the second interface of the second device, as shown in FIG. 12 , and then wakes up the second interface of the second device, whereby the second interface of the first device can send a message to the second interface of the second device. The interface sends uplink data or informs it that there is an inquiry type frame of uplink data that needs to be received, etc., thereby realizing data communication between the first device and the second device.

It should be noted that, if the first indication information indicates that the second interface of the second device is in a dormant state or is in a dormant state within a preset time period, after receiving the fourth message by using the first interface, the second device will The first interface of the second device immediately wakes up the second interface of the second device based on the fourth message, so that the second interface of the second device enters the awake state, thereby realizing data communication between the first device and the second device.

The preset time period in the first indication information may be set based on a preset communication protocol between the first device and the second device. For example, the time period from the time when the second device sends the first message and/or the second message to a certain time point is regarded as a preset time period; or from a certain time point, after a corresponding period of time The time period of the duration is used as the preset time period; or, the preset time period may be set based on the time indicated in the first indication information, for example, the time period of the sending cycle of the first indication information will be indicated from the first indication information , that is, the time period from when the first field of the previous message is sent to when the first field of the next message is sent, as the preset time period.

It should be noted that the second device periodically sends the first message and/or the second message, and the first device can be made to identify whether there is a missed message based on the sending cycle.

In an example of this application, when the preset time period of the first indication information expires or the first device does not receive the first message or the second message, the first device cannot know the current location of the second interface of the second device. In the state of the second device, you can directly send a message related to the uplink data to the second interface of the second device, such as the uplink data itself or a third message such as a frame informing it that there is an inquiry type of uplink data that needs to be received, in order to try to communicate with the first The two devices communicate data.

Wherein, during normal communication, if the second device receives the third message sent by the first device through the second interface, it will feed back to the second interface of the first device a reply that can confirm that the second device has received the third message information.

However, if the first device does not receive a reply message fed back by the second device within the preset interval after sending the third message, it indicates that the second interface of the second device is very likely or determined to be in a dormant state. As a result, the second device does not receive the third message sent by the first device. At this time, the first device can send a fourth message to the first interface of the second device, thereby waking up the second interface of the second device, and then waking up the second device. The second interface of the second device sends a third message to implement data communication between the first device and the second device.

In order to avoid the possible channel occupation caused by the first device sending the fourth message to the second device before receiving the reply message, the waiting interval of the first device needs to be longer than the transmission of the third message from the first device in the normal communication state The sum of the duration to the second device plus the duration of the reply message transmitted from the second device to the first device, for example, the interval duration is greater than the time from the last field of the third message leaving the first device, to the second device The time period between the time when the first field of the reply message fed back to the first device reaches the first device, that is, the normal time when the second device receives the third message and then sends the reply message of the third message to the first device. interval. In the 802.11 protocol, the value of the interval duration is usually expressed as greater than aSIFSTime, such as aSIFSTime=10us in the 2.4GHz frequency band of the 802.11g/n protocol, and aSIFSTime=16us in the 5GHz frequency band of the 802.11a/n/ac protocol.

Based on the above implementation scheme, FIG. 13 shows a schematic flowchart of message transmission and data communication between the first device and the second device, as follows:

Step 1301: The second device sends a first message to the first device through its first interface or the second interface, and/or the second device sends a second message to the first device through its second interface.

Wherein, both the first message and the second message contain first indication information, and the first indication information is used to indicate the state of the second interface of the second device, such as currently in a dormant state or an awake state, or in a preset state Sleeping or awake for a period of time.

The second device may notify the first device of the state of the second interface of the second device by sending the first message, or sending the second message, or sending the first message and the second message respectively. When the second device sends the first message and the second message respectively to the first device, it can better ensure that the first device can receive the first indication information.

Wherein, when the first interface of the second device has the ability to send the first message, the second device can send the first message through the first interface, and the second device can send the second message through the second interface; When the first interface does not have the ability to send the first message, the second device may send the first message and/or the second message through the second interface.

It should be noted that the second device may send the first message based on the preset first time period; the second device may send the second message based on the preset second time period. The first time period and the second time period may be the same or different. The time point when the second device sends the first message may be the same as or different from the time point when the second device sends the second message.

Step 1302: The first device receives the first message and/or the second message sent by the second device.

Step 1303: The first device determines the state of the second interface of the second device indicated in the first indication information. If the first indication information indicates that the second interface of the second device is in an awake state, step 1304 is executed. If the first indication information indicates that the second interface of the second device is in a dormant state, step 1305 is performed.

Step 1304: Send a third message to the second device, where the third message is related to the uplink data of the first device, so as to perform data communication between the first device and the second device.

Step 1305: Send a fourth message to the second device, where the fourth message is used to wake up the second interface of the second device, so that data is performed between the first device and the second device through the second interface of the awakened second device. communication.

Step 1306: If the first device does not receive the first message or the second message, so that the first device cannot know the state of the second interface of the second device, the first device sends a third message to the second device. Attempt data communication between the first device and the second device.

Wherein, during normal communication, if the second device receives the third message sent by the first device through the second interface, it will feed back to the second interface of the first device a reply that can confirm that the second device has received the third message information.

Step 1307: After the preset interval has elapsed after the first device sends the third message, if the first device does not receive the reply message sent by the second device, and the reply message corresponds to the third message, the first device sends the first device to the first device. The second device sends a fourth message to wake up the second interface of the second device to implement data communication between the first device and the second device.

Based on the technical solutions in FIG. 4 to FIG. 11 , the present application takes the example that the first device and the second device are respectively a terminal and an AP in a basic service set as an example:

As shown in Figure 2, the terminal has two communication modules: WUR and 802.11 main transceiver module, the corresponding communication interfaces are: the interface corresponding to WUR is the first interface of the first terminal, and the interface corresponding to the 802.11 main transceiver module is the first interface The second interface of a terminal, the WUR of the terminal uses its corresponding interface to communicate with other devices, and the 802.11 main transceiver module of the terminal uses its corresponding interface to communicate with other devices; the AP has two communication modules: WUR and 802.11 main The transceiver module, the corresponding communication interface is: the interface corresponding to the WUR is the first interface of the second terminal and the interface corresponding to the 802.11 main transceiver module is the second interface of the second terminal, and the WUR of the AP uses its corresponding interface to communicate with other devices. For communication, the 802.11 main transceiver module of the AP uses its corresponding interface to communicate with other devices.

Taking the WUR of the terminal and the WUR of the AP not capable of sending WUP as an example, combined with the communication diagrams in Figure 8-Figure 10:

In the communication process, the WLAN system involves the communication between the terminal and the WUR of the AP, the communication between the 802.11 main transceiver module of the terminal and the 802.11 main transceiver module of the AP, and the communication between the AP and the WUR of the terminal.

The communication from the terminal to the WUR of the AP includes: the terminal sends a wake-up frame containing WUR identification information, namely WUP, to the WUR of the AP to try to wake up the communication of the 802.11 main transceiver module of the AP.

The communication between the 802.11 main transceiver module of the terminal and the 802.11 main transceiver module of the AP includes: the 802.11 main transceiver module of the terminal sends the uplink data to the 802.11 main transceiver module of the AP or informs it that there is a frame of uplink data to be received; or, The communication of the reply message sent by the AP's 802.11 main transceiver module to the terminal's 802.11 main transceiver module to confirm the receipt of the uplink data sent by the terminal's 802.11 main transceiver module; or, the AP's 802.11 main transceiver module to the terminal's 802.11 main transceiver module Communication sent by the module to indicate the current state of the AP or the state it is in within a preset time period.

The communication between the AP and the WUR of the terminal includes: the communication sent by the AP to the WUR of the terminal to indicate the current state of the AP or the state in a preset time period. Here, the state of the AP refers to whether the 802.11 main transceiver module of the AP is in the awake state or the sleep state.

Among them, when the AP's 802.11 main transceiver module is awake, the AP can send and receive Wi-Fi messages; when the AP's 802.11 main transceiver module is in sleep, the AP's 802.11 main transceiver module can only be awakened through the AP's WUR, or there is a downlink Actively wake up when the message needs to be transmitted, and then transmit Wi-Fi messages with other devices. The main purpose of the AP's 802.11 main transceiver module entering sleep is to save energy.

It can be seen from the above that in this embodiment, when there is uplink data that needs to be transmitted on the terminal side, in one case, the terminal can send a WUR message and a Wi-Fi message to the AP respectively, so as to ensure that when the WUR of the AP is in the awake state, it can be based on the terminal. The sent WUR message wakes up the 802.11 main transceiver module of the AP to receive Wi-Fi messages; or in another case, the terminal can only send Wi-Fi messages to the AP, so that when the AP's 802.11 main transceiver module is in the awake state, it can Directly receive Wi-Fi messages to realize data communication between the two. On the AP side, the terminal is notified by sending its own status (for example, the status of the AP's 802.11 main transceiver module) or the status within a preset time period. It is still necessary to send a WUR message before sending a Wi-Fi message to wake up the 802.11 main transceiver module of the AP, which can improve the efficiency and effectiveness of the data communication between the AP and the terminal, and can also reduce the sending of invalid messages. Save unnecessary overhead.

Specifically, with reference to FIG. 2 and FIG. 4 , a first device (such as a terminal) receives a first message (WUR message, such as WUR beacon, WUR message) sent by a second device (such as an AP) through a first interface (such as an interface corresponding to WUR) sync frame). Or, the first device receives the second message (Wi-Fi message, such as Wi-Fi beacon) sent by the second device through the second interface (such as the interface corresponding to the 802.11 main transceiver module). Both the first message and the second message carry the first indication information of the current state of the second device or the state of the second device within a preset time period. If it is within the preset time period, the first device determines that the received first message or the first indication information carried in the second message is valid information, that is, the preset time period is valid; if it exceeds the preset time period, Then, the first device determines that the received first message or the first indication information carried in the second message is invalid information, that is, the preset time period is invalid.

In a possible implementation manner, the first message and the second message respectively use a 1-bit (bit) indication bit to indicate the first indication information, and the first indication information indicates that the second interface of the second device is in an awake state or a sleep state, Or, it will be in an awake state or a sleep state for a preset period of time, so that the first device that receives the first message or the second message can obtain the location of the second interface of the second device according to the first indication information. state in order to communicate with the second device on the appropriate interface. For example, when the first indication is "1", it indicates that the second device will be in an awake state, and when the first indication is "0", it indicates that the second device will be in a sleep state. The preset time period can be a time period agreed in advance by the first device and the second device. As shown in FIG. 14 , from the time when the second device sends the first message or the second message to a certain time point or, the preset time may also be a time after a certain time point, as shown in FIG. 15 , the time after the second device sends the first message or the second message. If the first message or the second message is a message periodically sent by the second device, such as WURbeacon (beacon frame of WUR message), WUR synchronization frame (WUR message carrying synchronization information), Wi-Fi beacon (Wi-Fi message the beacon frame), etc. As shown in FIG. 16 , the preset time period can also be the time when the second device sends the current first message to the time when the first message is sent next; or, from the time when the current second message is sent to the next time. The time to send the second message.

In addition, the first indication information may further carry the length of the preset time period. For example, the preset time period is a number of aSlotTimes (aSlotTime is an important basic time unit in the 802.11 protocol, and aSlotTime=9us in the 2.4GHz frequency band of the 802.11g/n/ac protocol). Or, the preset time period is a specific duration, such as several milliseconds (ms, milliseconds), or several microseconds (us, microseconds). Of course, the above is just an example, and the first indication information may also indicate the preset time in other manners, which will not be illustrated one by one here.

Therefore, based on the foregoing solution, when the second interface of the first device has uplink data that needs to be sent to the second device:

If the first device has received the first message or the second message sent by the second device, and the second interface of the first device wakes up from sleep, and there is uplink data that needs to be sent to the second device, it does not exceed the first The preset time indicated by the first indication information in the message or the second message, the state of the second interface of the second device is determined according to the first indication information.

If the first indication information indicates that the second interface of the second device is in the awake state, or will remain in the awake state within a preset time period and will not go to sleep, the first device sends the second interface of the second device the first Three messages. The third message is a Wi-Fi message, which can be PS-Poll (used by the first device to inform the second device that it has woken up), or a Request to Send (RTS) frame, or other messages that can notify the second device of the first A message that the 802.11 main transceiver module of the device has woken up, or a message such as uplink data.

If the first indication information indicates that the second interface of the second device is in a dormant state or is in a dormant state within a preset time period, the first device sends a fourth message to the first interface of the second device. The fourth message is a WUR message, which is used to wake up the second interface of the second device. After the second interface of the second device wakes up, the first device transmits a message through the second interface of the first device and the second interface of the second device.

Wherein, if the first device has not received the first message and the second message sent by the second device; or, the first device has received the first message or the second message sent by the second device, but the second interface of the first device The time for waking up and preparing to send an uplink message to the second device has exceeded the preset time period during which the second interface of the second device is in the waking state indicated by the first message or the first indication information in the second message, then the first The device may also send a third message to the second interface of the second device to attempt data communication. During the first interval time as the interval length above, if the first device does not receive the message sent by the second device to the first device confirming that it has received the third message (that is, the reply message for the third message), The first device also sends a fourth message to the first interface of the second device after the first interval. The first interval time can be slightly larger than aSIFSTime (the aSIFSTime is an important basic time unit in the 802.11 protocol, which is used for the interval required for a device to send a reply message after receiving a legitimate message sent to itself. In the 802.11g/n protocol aSIFSTime=10us on the 2.4GHz frequency band, and aSIFSTime=16us on the 5GHz frequency band of the 802.11a/n/ac protocol. If the second interface of the second device is in the awake state at this time, after receiving the third message sent by the first device, the second device can only reply to the message (that is, send a reply message for the third message) after aSIFSTime, Such as clear to send (Clear to Send, CTS), acknowledgement frame (Acknowledge, ACK), or other messages. Therefore, the first interval needs to be greater than the aSIFSTime, so as to prevent the first device from sending the fourth message quickly (the speed is less than or equal to aSIFSTime), which will cause the second interface of the second device to receive the third message even if , because the channel is occupied by the fourth message sent by the first device, the reply message of the third message cannot be sent to the first device in time.

It should be noted that, in the examples of this application, the first device and the second device above are both specific examples of wireless devices, and the structures of the first device and the second device are described below:

As shown in FIG. 17, it is a schematic structural diagram when the wireless device is the first device in FIG. 4, and the first device includes the following structures:

The first communication module 1701, corresponding to the first interface of the first device;

The second communication module 1702 corresponds to the second interface of the first device;

In addition to this, it also has the following structure:

The memory 1703 is used to store the application program and the data generated by the operation of the application program;

The processor 1704 is configured to execute the application program to realize the following functions:

The first message and/or the second message sent by the second device is received through the first interface corresponding to the first communication module 1701 or the second interface corresponding to the second communication module 1702, where the first message and the second message are both contain first indication information; determine the state of the second interface of the second device indicated in the first indication information; if the first indication information indicates that the second interface of the second device is in wake-up state, send a third message to the second device through the second interface corresponding to the second communication module 1702, where the third message is related to the uplink data of the first device, so that the first device can communicate with Data communication is performed between the second devices; if the first indication information indicates that the second interface of the second device is in a dormant state, the first interface or the second interface corresponding to the first communication module 1701 is sent to the device. The second device sends a fourth message, and the fourth message is used to wake up the second interface of the second device, so that the connection between the first device and the second device can pass through the wake-up of the second device. The second interface performs data communication.

The first device in FIG. 17 may be a terminal, the first communication module 1701 may be a WUR, the second communication module 1702 may be an 802.11 master transceiver module, the first message may be a WUR message, and the second message may be Wi-Fi information. The first interface corresponding to the WUR is used to receive the WUR message (eg, receive the first message), that is, the first payload part of the WUR message, and it may also have the function of sending the first payload part of the WUR message (eg, sending the fourth message). The second interface corresponding to the 802.11 main transceiver module is used for sending and receiving Wi-Fi messages (eg, receiving the second message and sending the third message).

It should be noted that if the first interface corresponding to the WUR in the terminal can only receive the first payload part of the WUR message, then the second interface corresponding to the 802.11 main transceiver module also needs to have the ability to send the WUR message (including the first leading part). and the first payload part), if the first interface corresponding to the WUR can send and receive the first payload part of the WUR message, the second interface corresponding to the 802.11 main transceiver module does not necessarily need to have the ability to send the WUR message.

In addition, the first device also has an antenna 1705, and the first interface corresponding to the first communication module 1701 and the second interface corresponding to the second communication module 1702 can transmit and receive signals through the antenna 1705.

It should be noted that the first interface corresponding to the WUR on the terminal and the second interface corresponding to the 802.11 main transceiver module can share the antenna 1705 and work in the same frequency band to reduce the cost of device hardware. Alternatively, the first interface corresponding to the WUR and the second interface corresponding to the 802.11 main transceiver module may also correspond to different antennas 1705, especially when the two operate in different frequency bands, such as the 2.4GHz frequency band and the 5GHz frequency band. In an actual product, the terminal may be implemented by a system on a chip (System on a Chip, SoC) or an integrated circuit may implement the functions of the above structures.

As shown in FIG. 18 , the wireless device is a schematic structural diagram of the second device in FIG. 4 , and the second device includes the following structures:

The first communication module 1801, corresponding to the first interface of the second device;

The second communication module 1802 corresponds to the second interface of the second device;

In addition to this, it has the following structure:

The memory 1803 is used to store the application program and the data generated by the operation of the application program;

The processor 1804 is configured to execute the application program to realize the following functions:

Send the first message to the first device through the first interface corresponding to the first communication module 1801 or the second interface corresponding to the second communication module 1802, and/or send the first message to the first device through the second interface corresponding to the second communication module 1802 Sending a second message; wherein both the first message and the second message include first indication information, and the first indication information indicates the state of the second interface of the second device.

Before sending the first message and/or the second message, the processor 1804 may also generate and parse the first message and the second message.

The second device may be an AP, the first communication module 1801 may be a WUR, the second communication module 1802 may be an 802.11 master transceiver module, the first message may be a WUR message, and the second message may be a Wi-Fi message. The first interface corresponding to the WUR is used for receiving the WUR message (eg, receiving the fourth message), that is, the first payload part of the WUR message, and it may also have the function of sending the first payload part of the WUR message (eg, sending the first message). The second interface corresponding to the 802.11 main transceiver module is used for sending and receiving Wi-Fi messages (such as sending a second message and receiving a third message).

It should be noted that if the first interface corresponding to the WUR in the AP can only receive the first payload part of the WUR message, then the second interface corresponding to the 802.11 main transceiver module also needs to have the ability to send the WUR message (including the first leading part). and the first payload part), if the first interface corresponding to the WUR can send and receive the first payload part of the WUR message, the second interface corresponding to the 802.11 main transceiver module does not necessarily need to have the ability to send the WUR message.

The first message may be a WUR message periodically sent by the second device, such as a WUR beacon or a WUR synchronization frame, etc.; the second message may be a Wi-Fi message periodically sent by the second device, such as a Wi-Fi beacon Wait.

The first indication information indicating the state of the second interface of the second device means that the first indication information indicates the current state of the second interface of the second device or the state in a preset time period, such as always In the awake state, it will not go to the dormant state, or, it has been in the dormant state and will not turn into the awake state, or it is in the awake state or the dormant state for a certain period of time, and so on.

The preset time period may be a time period previously agreed by the first device and the second device, such as from the time point when the second device sends the first message and/or the second message to a certain time point. period;

Alternatively, the preset time period may also be a time period after a certain point in time, such as a time period after the second device sends the first message and/or the second message;

Or, if the first message and the second message are messages periodically sent by the second device, such as WUR beacon, WUR synchronization frame and Wi-Fi beacon, etc., the preset time period may also be a first message sent from the second device. The time period from the time point of the message to the time point when the next first message is sent, or the preset time period can be from the time point when the second device sends a second message to the time point when the next second message is sent time period between time points.

In addition, the length of the preset time period may be directly carried in the first indication information. For example, the preset time period is several aSlotTimes; or a specific duration, such as several milliseconds ms, or several microseconds us, and so on.

In addition, the second device also has an antenna 1805, and the first interface corresponding to the first communication module 1801 and the second interface corresponding to the second communication module 1802 can transmit and receive signals through the antenna 1805.

It should be noted that the first interface corresponding to the WUR on the AP and the second interface corresponding to the 802.11 main transceiver module can share the antenna 1805 and work in the same frequency band to reduce the cost of device hardware. Alternatively, the first interface corresponding to the WUR and the second interface corresponding to the 802.11 main transceiver module may also correspond to different antennas 1705, especially when the two operate in different frequency bands, such as the 2.4GHz frequency band and the 5GHz frequency band. In an actual product, the AP can be implemented by a system on a chip (System on a Chip, SoC) or an integrated circuit can implement the functions of the above structures.

Therefore, in a basic service set, the AP can periodically send WUR messages and/or Wi-Fi messages to its connected terminals to notify each terminal of the current state of the interface corresponding to the 802.11 main transceiver module of the AP or the The state of the preset time period, such as the awake state or the dormant state, and then the terminal corresponding to the AP will know whether the interface corresponding to the AP's 802.11 main transceiver module is in the awake state or the dormant state, and make a corresponding communication response. For example, when any terminal learns that the interface corresponding to the 802.11 main transceiver module of the AP is in the awake state, the terminal can directly send the message related to the uplink data to the AP, and when it learns that the interface corresponding to the 802.11 main transceiver module of the AP is dormant In the state, the terminal can send a wake-up frame to the AP, and then wake up the interface corresponding to the 802.11 main transceiver module of the AP, and then send the message related to the uplink data to the AP. After the interface corresponding to the 802.11 main transceiver module of the AP is awakened, the AP sends the The Wi-Fi message sent by the terminal will indicate that the interface corresponding to the 802.11 main transceiver module of the AP is in the awake state, and the terminal can directly send the message to the terminal by judging that the interface corresponding to the AP's 802.11 main transceiver module in the received indication information is in the awake state. The AP sends messages related to uplink data to effectively wake up the interface corresponding to the 802.11 main transceiver module of the AP, and achieve effective communication. There is no reason that a terminal has woken up the interface corresponding to the AP's 802.11 main transceiver module. The sent wake-up frame cannot be received by the WUR of the AP in the dormant state, so that other terminals cannot know that the interface corresponding to the AP's 802.11 main transceiver module has been in the awake state, thereby avoiding communication failure.

On the terminal side, the state of the interface corresponding to the 802.11 main transceiver module of the AP is judged by judging the message sent by the AP, and then only the Wi-Fi message or WUR message is sent to effectively wake up the interface corresponding to the 802.11 main transceiver module of the AP. interface, and implement communication, thereby reducing the overhead of the terminal.

Wherein, at least one first device shown in FIG. 17 and one second device shown in FIG. 18 form a basic service set, as shown in FIG. 17 .

The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments may be referred to each other.

The interface described in the embodiments of this application may be a logical concept (eg, a logical functional unit/module), or may be a physical entity (eg, a communication interface provided by a corresponding communication module). The functions implemented by the various interfaces involved (such as the first interface and the second interface) are all implemented by corresponding physical entities, such as a wireless transceiver or a wake-up receiver or a wake-up transmitter. Therefore, the various embodiments of this application are implemented. The steps performed by the second interface described in can be replaced by a wireless transceiver (such as a WiFi communication module, or WiFi main radio or 802.11 main transceiver module); The sending steps performed by the first interface of the AP/terminal can be replaced by the wake-up transmitter of the AP/terminal to perform (in another embodiment, since the wireless transceiver can be equipped with wifi signal transceiver and WUR The two functions of signal transmission, so the steps performed by the first interface of the AP/terminal can also be replaced by the wireless transceiver of the AP/terminal); the steps described in the embodiments of this application The receiving steps performed by the first interface of the AP/terminal can all be replaced by being performed by the wake-up receiver of the terminal. If the WUR module integrates the functions of receiving and transmitting the WUR signal at the same time, the WUR module can be called a wake-up transceiver, and the above-mentioned wake-up transmitter or wake-up receiver can be replaced by a wake-up transceiver.

The relevant parts of the various method embodiments of the present invention may refer to each other; the apparatus provided by each apparatus embodiment is used to execute the method provided by the corresponding method embodiment, so each apparatus embodiment may refer to the relevant method embodiments in the relevant method embodiments. partially understood. The relevant parts of the various embodiments of the present invention may refer to each other. The device structure diagrams given in each device embodiment of the present invention only show a simplified design of the corresponding device. In practical applications, the device may include any number of transmitters, receivers, transceivers, processors, memories, etc., so as to realize the functions or operations performed by the device in each device embodiment of the present invention, and all of them can realize this The devices applied for are all within the protection scope of the present application. The names of messages/frames/indication information, modules or units provided in the embodiments of the present invention are only examples, and other names may be used as long as the messages/frames/indication information, modules or units have the same functions.

In the several embodiments provided in this application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and 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 in this 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 alone, or two or more units may be integrated into one unit.

Claims (16)

1. A communication method, characterized in that, applied to a first device, the method comprising: receiving a first message and/or a second message sent by a second device, where both the first message and the second message contain first indication information; judging the state of the second interface of the second device indicated in the first indication information; If the first indication information indicates that the second interface of the second device is in an awake state, send a third message to the second device, where the third message is related to the uplink data of the first device, to performing data communication between the first device and the second device; If the first indication information indicates that the second interface of the second device is in a dormant state, send a fourth message to the second device, where the fourth message is used to wake up the second interface of the second device , so that data communication is performed between the first device and the second device through the second interface of the awakened second device; If the first message and the second message are not received, send the third message to the second device; After a preset interval has elapsed after the third message is sent, if no reply message sent by the second device is received, and the reply message corresponds to the third message, the second device sends the message to the second device The fourth message is sent. 2 . The method according to claim 1 , wherein the interval duration is greater than the corresponding time when the first device sends the third message to when the first device receives the third message in a normal communication state. 3 . time between reply messages. 3. The method according to claim 1, wherein the first indication information indicates that the second interface of the second device is in an awake state, comprising: The first indication information indicates that the second interface of the second device is currently in an awake state, or the second interface of the second device is in an awake state within a preset time period and the preset time period is valid. 4. The method according to claim 1, wherein the first indication information indicates that the second interface of the second device is in a dormant state, comprising: The first indication information indicates that the second interface of the second device is currently in a dormant state, or the second interface of the second device is in a dormant state within a preset time period. 5. The method according to any one of claims 1-4, wherein the first interface of the first device is an interface corresponding to WUR, and the second interface of the first device is an interface corresponding to an 802.11 main transceiver module interface; The first interface of the second device is an interface corresponding to the WUR, and the second interface of the second device is an interface corresponding to the 802.11 main transceiver module. 6. The method according to any one of claims 1-4, wherein the first message is a WUR message, and the second message is a Wi-Fi message. 7. The method according to any one of claims 1-4, wherein the first device is a terminal, and the second device is an AP. 8. A communication method, characterized in that, applied to a second device, the method comprising: Send a first message to a first device through a first interface or a second interface, and/or send a second message to the first device through a second interface; Wherein, both the first message and the second message include first indication information, and the first indication information indicates the state of the second interface of the second device; Receive a third message sent by the first device, where the third message is received by the first device when the received first indication message indicates that the second interface of the second device is in the awake state or does not receive the when the first message or the second message is sent, the third message is related to the uplink data of the first device, so as to perform data communication between the first device and the second device; Receive a fourth message sent by the first device, where the fourth message is sent by the first indication message received by the first device indicating that the second interface of the second device is in a dormant state, or the fourth message is sent by the first indication message. Four messages are sent by the first device after a preset interval has elapsed after sending the third message to the second device without receiving a reply message sent by the second device; Based on the fourth message, wake up the second interface of the second device, so that data communication is performed between the first device and the second device through the awakened second interface. 9. The method according to claim 8, wherein the first indication message indicates that the second interface of the second device is in an awake state, comprising: The first indication information indicates that: the second interface of the second device is currently in an awake state, or the second interface of the second device is in an awake state within a preset time period and the preset time period is valid. 10. The method according to claim 8, wherein the first indication information indicates that the second interface of the second device is in a dormant state, comprising: The first indication information indicates that: the second interface of the second device is currently in a dormant state, or the second interface of the second device is in a dormant state within a preset time period. 11 . The method according to claim 8 , wherein the preset time period in the first indication information is set by the second device based on a preset time period between the first device and the second device. 12 . The communication protocol is either set based on the time value indicated in the first indication information. 12. The method according to any one of claims 8-11, wherein the sending the first message to the first device through the first interface or the second interface comprises: Based on a preset first time period, the first message is sent to the first device through the first interface or the second interface. The method according to any one of claims 8-11, wherein the sending the second message to the first device through the second interface comprises: Based on a preset second time period, the second message is sent to the first device through the second interface. 14. A wireless device, comprising: a first communication module, corresponding to the first interface of the wireless device; a second communication module, corresponding to the second interface of the wireless device; Memory for storing applications and data generated by the running of the applications; A processor for executing the application program to achieve the following functions: Receive a first message and/or a second message sent by a second device, where both the first message and the second message contain first indication information; determine the second indication indicated in the first indication information The state of the second interface of the device; if the first indication information indicates that the second interface of the second device is in the awake state, send a third interface to the second device through the second interface of the wireless device message, the third message is related to the uplink data of the wireless device, so as to perform data communication between the wireless device and the second device; if the first indication information indicates the first When the second interface is in a dormant state, a fourth message is sent to the second device through the first interface or the second interface of the wireless device, where the fourth message is used to wake up the second interface of the second device to enabling data communication between the wireless device and the second device through the second interface of the awakened second device; If the first message and the second message are not received, the third message is sent to the second device; after a preset interval after the third message is sent, if the third message is not received If the reply message is sent by the second device, and the reply message corresponds to the third message, the fourth message is sent to the second device. 15. A wireless device, comprising: a first communication module, corresponding to the first interface of the wireless device; a second communication module, corresponding to the second interface of the wireless device; Memory for storing applications and data generated by the running of the applications; A processor for executing the application program to achieve the following functions: The first message is sent to the first device through the first interface or the second interface of the wireless device, and/or the second message is sent to the first device through the second interface of the wireless device; wherein the first Both the message and the second message include first indication information, where the first indication information indicates the state of the second interface of the wireless device; Receive a third message sent by the first device, where the third message is received by the first device when the received first indication message indicates that the second interface of the second device is in an awake state or does not receive the third message. A message or the second message is sent when the third message is related to the uplink data of the first device, so as to perform data communication between the first device and the second device; Receive a fourth message sent by the first device, where the fourth message is sent by the first indication message received by the first device indicating that the second interface of the second device is in a dormant state, or the fourth message is sent by the first indication message. Four messages are sent by the first device after a preset interval has elapsed after sending the third message to the second device without receiving a reply message sent by the second device; Based on the fourth message, wake up the second interface of the second device, so that data communication is performed between the first device and the second device through the awakened second interface. 16. A basic service set, comprising: at least one first device and one second device; Wherein, the second device sends a first message to each of the first devices through its first interface or second interface, and/or the second device sends a first message to each of the first devices through its second interface The device sends a second message, the first device receives the first message and/or the second message sent by the second device, and both the first message and the second message contain first indication information; the The first device determines the state of the second interface of the second device indicated in the first indication information, and if the first indication information indicates that the second interface of the second device is in an awake state, then The first device sends a third message to the second device, the third message is related to the uplink data of the first device, so as to perform data communication between the first device and the second device ; if the first indication information indicates that the second interface of the second device is in a dormant state, the first device sends a fourth message to the second device, and the fourth message is used to wake up the first device The second interface of the second device, so that data communication between the first device and the second device is performed through the second interface of the awakened second device; if the first device does not receive the first device message and the second message, the first device sends the third message to the second device; after the first device sends the third message after a preset interval, if the If the first device does not receive the reply message sent by the second device, and the reply message corresponds to the third message, the first device sends the fourth message to the second device.

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