CN116600351A - Data transmission method, device and electronic equipment - Google Patents

Abstract

The present application is applicable to the technical field of communication, and provides a data transmission method, device, and electronic equipment. The method includes: before the first WiFi device sends a data frame through the SR function, it is determined that the second WiFi device and the designated terminal transmit the first number of The packet loss rate of the data frame is obtained to obtain the first packet loss rate; in the process of sending the data frame by the first WiFi device through the SR function, it is determined that the second WiFi device and the designated terminal transmit a second number of data frames the packet loss rate to obtain the second packet loss rate; calculate the rising ratio of the packet loss rate of the second WiFi device according to the first packet loss rate and the second packet loss rate; according to the second WiFi device The increase ratio of the packet loss rate, select whether to continue to send data frames through the SR function. Through the above method, the overall network performance when the first WiFi device sends SR packets can be guaranteed.

Description

Data transmission method, device and electronic equipment

technical field

The present application belongs to the technical field of communication, and in particular relates to a data transmission method, device, electronic equipment and computer-readable storage medium.

Background technique

The 802.11 protocol group launched a new version of the 802.11ax wireless protocol, marking that the wireless local area network has officially entered the era of the sixth generation of wireless network technology (IEEE 802.11.ax, WiFi6).

In response to the problem of low space utilization caused by the strict conflict avoidance mechanism of the old version of the WiFi protocol, the WiFi6 protocol introduced the Spatial Reuse (SR) function, which adjusts the clear channel assessment (ClearChannel Assessment, CCA) threshold and The transmission power method allows Basic Service Sets (BSSs) that are relatively far apart in space to send wireless packets at the same time, thereby improving the overall network capacity.

To achieve spatial reuse for Spatial Reuse, the following conditions need to be met:

(1) In the same BSS, all WiFi6 devices have the same BSS color, and the BSS colors of different BSSs are different, that is, the BSS color is used as the identifier of the BSS network.

(2) The WiFi6 device declares its own BSS Color in the preamble to ensure that other WiFi6 devices can identify whether the received signal is its own BSS (Self BSS) or an overlapping Basic Service Set (Overlapping BasicService Set, OBSS) signal at the preamble stage.

(3) If the energy of the OBSS signal received by the current WiFi6 device is lower than the threshold value customized by Spatial Reuse (indicated by OBSS PD), the current WiFi6 device can terminate the demodulation of the OBSS signal and send packets, so as to realize the simultaneous sending of linear parts , so as to achieve the purpose of space multiplexing.

The schematic timing diagram of a typical Spatial Reuse is shown in Figure 1. In Figure 1, there are two BBSs that are far apart in space, namely BBS1 and BBS2. The BSS Color of the preamble of BBS1 is color 1, and the preamble of BBS2 The BSS Color of the BBS is color 2. Since the receiver (the tablet device in Figure 1) can judge the sender based on the color information of the preamble of the BBS signal, both receivers in Figure 1 can accurately receive the corresponding BBS signal.

However, although Spatial Reuse will increase the overall throughput of the network through spatial multiplexing, there is also packet loss.

Contents of the invention

The embodiment of the present application provides a data transmission method, device and electronic equipment, which can solve the problem of excessive packet loss rate when using SR.

In the first aspect, the embodiment of the present application provides a data transmission method, which is applied to a first WiFi device, and the first WiFi device supports a spatial multiplexing SR function, and the data transmission method includes:

Before the first WiFi device sends data frames through the SR function, determine the packet loss rate of the first number of data frames transmitted between the second WiFi device and the designated terminal to obtain the first packet loss rate;

In the process of sending data frames by the first WiFi device through the SR function, determine the packet loss rate of the second number of data frames transmitted between the second WiFi device and the designated terminal, to obtain a second packet loss rate;

calculating the increase ratio of the packet loss rate of the second WiFi device according to the first packet loss rate and the second packet loss rate;

According to the increase ratio of the packet loss rate of the second WiFi device, it is selected whether to continue sending data frames through the SR function.

In the second aspect, the embodiment of the present application provides a data transmission device, which is applied to a first WiFi device, and the first WiFi device supports a spatial multiplexing SR function, and the data transmission device includes:

The first packet loss rate determination module is used to determine the packet loss rate of the first number of data frames transmitted between the second WiFi device and the designated terminal before the first WiFi device sends the data frame through the SR function, so as to obtain the first packet loss rate Rate;

A second packet loss rate determining module, configured to determine the packet loss rate of the second number of data frames transmitted between the second WiFi device and the specified terminal during the process of the first WiFi device sending data frames through the SR function , get the second packet loss rate;

The increase ratio calculation module of the packet loss rate is used to calculate the increase ratio of the packet loss rate of the second WiFi device according to the first packet loss rate and the second packet loss rate;

The SR function selection module is configured to select whether to continue sending data frames through the SR function according to the increase ratio of the packet loss rate of the second WiFi device.

In a third aspect, an embodiment of the present application provides an electronic device, including a memory, a processor, and a computer program stored in the memory and operable on the processor. When the processor executes the computer program, Implement the method as described in the first aspect.

In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, where the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method according to the first aspect is implemented.

In a fifth aspect, an embodiment of the present application provides a computer program product, which causes the electronic device to execute the method described in the first aspect when the computer program product is run on the electronic device.

Compared with the prior art, the embodiments of the present application have the following beneficial effects:

In this embodiment of the application, since the first packet loss rate is the packet loss rate of the first number of data frames transmitted between the second WiFi device and the designated terminal before the first WiFi device sends data frames through the SR function, the second packet loss rate is the packet loss rate of the second number of data frames transmitted between the second WiFi device and the designated terminal during the process of the first WiFi device sending data frames through the SR function, therefore, it is calculated according to the first packet loss rate and the second packet loss rate The calculated increase ratio of the packet loss rate of the second WiFi device reflects the impact on the packet loss rate of the second WiFi device when the first WiFi device sends data frames through the SR function. That is to say, in the embodiment of this application, when the first WiFi device uses the SR function to send packets, it evaluates the interference degree of its own packet sending to the second WiFi device communication, and intelligently decides whether to send SR packets at present, which is beneficial to reduce the When the device uses the SR function, the packet loss rate of the second WiFi device is too large, which is conducive to ensuring the overall network performance.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings that are required in the embodiments or the description of the prior art.

FIG. 1 is a schematic timing diagram of a typical Spatial Reuse provided by the prior art;

FIG. 2 is a schematic diagram of interference when transmitting data frames using the SR function provided by an embodiment of the present application;

FIG. 3 is a schematic flowchart of a data transmission method provided by an embodiment of the present application;

FIG. 4 is a schematic diagram of uplink rates and downlink rates corresponding to two different BSS networks provided by an embodiment of the present application;

Fig. 5 is a schematic diagram of a short frame interval provided by another embodiment of the present application;

Fig. 6 is a schematic diagram of a state transition provided by an embodiment of the present application;

FIG. 7 is a schematic structural diagram of a data transmission device provided by another embodiment of the present application;

FIG. 8 is a schematic structural diagram of an electronic device provided by an embodiment of the present application.

Detailed ways

In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.

It should be understood that when used in this specification and the appended claims, the term "comprising" indicates the presence of described features, integers, steps, operations, elements and/or components, but does not exclude one or more other Presence or addition of features, wholes, steps, operations, elements, components and/or collections thereof.

It should also be understood that the term "and/or" used in the description of the present application and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

In addition, in the description of the specification and the appended claims of the present application, the terms "first", "second", "third" and so on are only used to distinguish descriptions, and should not be understood as indicating or implying relative importance.

Reference to "one embodiment" or "some embodiments" or the like in the specification of the present application means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the present application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in other embodiments," etc. in various places in this specification are not necessarily All refer to the same embodiment, but mean "one or more but not all embodiments" unless specifically stated otherwise.

Embodiment one:

Although Spatial Reuse will increase the overall network throughput through spatial multiplexing, it will also cause wireless signal interference between devices. When the interference is relatively large, the network will lose packets and reduce throughput, which violates the original intention of the WiFi6 protocol design. As shown in Figure 2, BSS2 satisfies the SR condition. When performing spatial multiplexing, the SR data message of BSS2 interferes with the normal message of BSS1, and the terminal of BSS1 is located far away. After the terminal of BSS1 is interfered, it will cause Packet reception failed.

In order to reduce packet loss in the network when using the SR function, this embodiment of the present application provides a data transmission method.

In this data transmission method, the first WiFi device determines the packet loss rate (Packet Loss Rate, RER) of the data frame transmitted by the second WiFi device and the designated terminal before and after sending the data frame through the SR function, and then according to the obtained two The packet loss rate calculates the increase ratio of the packet loss rate of the second WiFi device, and finally selects whether to continue sending data frames through the SR function according to the increase rate of the packet loss rate.

The data transmission method provided by the embodiment of the present application will be described below with reference to the accompanying drawings.

Fig. 3 shows a flow chart of a data transmission method provided by an embodiment of the present application, the method is applied to a first WiFi device, and the first WiFi device supports the SR function. In this embodiment of the application, the first WiFi device may be a router using WiFi6 technology, a wireless access point (Access Point, AP), etc., as detailed below:

Step S31 , before the first WiFi device sends data frames through the SR function, determine the packet loss rate of the first number of data frames transmitted between the second WiFi device and the designated terminal, to obtain the first packet loss rate.

Wherein, the designated terminal refers to a terminal in the same BSS network as the second WiFi device, and the second WiFi device is the device corresponding to the first WiFi device wishing to use the SR function. When X transmits the data frame through the SR function during the process of transmitting the data frame, the WiFi device X is the second WiFi device in the embodiment of the present application.

Wherein, the first quantity is a preset value, which can be 15 or 20, etc., and is set according to actual needs, which is not limited here.

In the embodiment of the present application, the packet loss rate of the second WiFi device before the first WiFi device sends the data frame through the SR function is calculated according to the data frames successfully transmitted and the data frames not successfully transmitted between the second device and the specified terminal.

Step S32, during the process of the first WiFi device sending data frames through the SR function, determine the packet loss rate of the second number of data frames transmitted between the second WiFi device and the designated terminal, to obtain a second packet loss rate.

Wherein, the second quantity can be set according to the actual situation, for example, the second quantity can be equal to or not equal to the above-mentioned first quantity, which is not limited here.

In the embodiment of the present application, the first WiFi device is sending a data frame through the SR function (for example, the first WiFi device is sending a data frame to a terminal in the same BSS network as the first WiFi device through the SR function (for example, sending In the process of X1 (the X1 can be set according to the actual situation) frame data frame), calculate the packet loss of the second WiFi device according to the data frames successfully transmitted between the second device and the designated terminal and the data frames not successfully transmitted Rate.

In some embodiments, the data frame sent by the first WiFi device through the SR function in step S32 may be a data frame that the first WiFi device actually needs to send out and is useful to the receiving terminal, or may be test-specific data frame. Wherein, each data frame dedicated to the test may be pre-generated, and the frame content of each data frame may be the same or different. For example, when it is necessary to determine the impact of the first WiFi device on the packet loss rate of the second WiFi device when sending data frames through the SR function, the first WiFi device can determine the second packet loss rate by sending a test-specific data frame. packet rate. Since the test-specific data frame is pre-generated, sending the test-specific data frame can improve the sending efficiency of the data frame, thereby increasing the speed of determining the second packet loss rate.

Step S33 , calculating the increase ratio of the packet loss rate of the second WiFi device according to the first packet loss rate and the second packet loss rate.

Specifically, the increase ratio of the packet loss rate is calculated according to the following formula: (second packet loss rate−first packet loss rate)/first packet loss rate. Wherein, the second packet loss rate is the packet loss rate of the second WiFi device when the first WiFi device sends a data frame through the SR function, and the second packet loss rate may be greater than the first packet loss rate, or may not be greater than the The first packet loss rate.

Step S34, according to the increase ratio of the packet loss rate of the second WiFi device, choose whether to continue sending data frames through the SR function.

Specifically, since the increase ratio of the packet loss rate of the second WiFi device is a proportional value, a threshold value of the packet loss rate can be set between (0,1], and the increase rate of the packet loss rate of the second WiFi device The ratio is compared with the packet loss rate threshold, and the first WiFi device selects whether to continue sending data frames by the SR function according to the comparison result.It should be pointed out that if the rising ratio is less than or equal to 0, then select to continue sending data frames by the SR function.

In the embodiment of this application, since the first packet loss rate is the packet loss rate of the first number of data frames transmitted between the second WiFi device and the designated terminal before the first WiFi device sends data frames through the SR function, the second packet loss rate is During the process of sending data frames by the first WiFi device through the SR function, the packet loss rate of the second number of data frames transmitted by the second WiFi device and the designated terminal, therefore, calculated according to the first packet loss rate and the second packet loss rate The increase ratio of the packet loss rate of the second WiFi device reflects the impact on the packet loss rate of the second WiFi device when the first WiFi device sends data frames through the SR function. That is to say, in the embodiment of this application, when the first WiFi device uses the SR function to send packets, it evaluates the interference degree of its own packet sending to the second WiFi device communication, and intelligently decides whether to send SR packets at present, which is beneficial to reduce the When the device uses the SR function, the packet loss rate of the second WiFi device is too large, which is conducive to ensuring the overall network performance.

In some embodiments, the above step S34 includes, if it is determined that the increase ratio of the packet loss rate of the second WiFi device is greater than the preset first packet loss rate threshold, then choosing not to continue sending data frames through the SR function. When the increase ratio of the packet loss rate of the second WiFi device is greater than the preset first packet loss rate threshold, it indicates that when the first WiFi device sends data frames through the SR function, it will cause the packet loss rate of the second WiFi device to increase. Therefore, in order to reduce the impact on the packet loss rate of the second WiFi device, the first WiFi device suspends sending data frames through the SR function. In some embodiments, in order to be able to send data frames through the SR function in time, when the first WiFi device suspends to continue sending data frames through the SR function, it will return to the above step S31 and subsequent steps, so as to pass the SR function in time when the SR function can be used Send a data frame.

In some embodiments, considering that when the first WiFi device sends data frames through the SR function, it will not only affect the packet loss rate of the second WiFi device, but may also affect the average rate when the second WiFi device transmits data frames, so , the data transmission method provided in the embodiment of the present application further includes:

A1. Before the first WiFi device sends data frames through the SR function, determine an average rate at which the second WiFi device and the designated terminal transmit a third number of data frames to obtain a first rate.

Wherein, the third quantity can be set according to actual conditions. Preferably, compared with the detection of the packet loss rate, considering that when the detection of the rate adopts a larger number, the obtained rate is more accurate. Therefore, the above-mentioned third number can be set to be greater than the above-mentioned first number, and greater than the above-mentioned the second quantity of .

Specifically, the average rate at which the second WiFi device transmits the third number of data frames with the specified terminal refers to an average rate at which each data frame is transmitted. Wherein, the rate of each data frame transmitted by the second WiFi device and the designated terminal can be determined by collecting the rate information corresponding to the data frame transmitted by the second WiFi device by the first WiFi device. Specifically, for each data frame collected, the cyclic prefix length (GuardInterval, GI), modulation and coding scheme order (Modulation and Coding Scheme, MCS), number of spatial streams (Number of Spatial Stream, NSS) and bandwidth (Bandwidth, BW) and other rate information, and then search for the rate corresponding to the collected rate information according to the preset rate table. Among them, in the 802.11ax protocol, the preamble HE-SIG-A field records the BSS color and uplink and downlink information of the data frame, and includes rate information such as GI, MCS, NSS, and BW. Wherein, the rates corresponding to multiple rate information are recorded in the rate table. For example, when NSS is equal to 2 and BW is equal to 80, the rate table is shown in Table 1.

Table 1:

In the above Table 1, Modulation represents the modulation method, including Binary Phase Shift Keying (Binary PhaseShift Keying, BPSK), Quadrature Phase Shift Keying (Quadrature Phase Shift Keying, QPSK), 16-Quadrature Amplitude Modulation (Quadrature Amplitude Modulation, QAM), 64-QAM, 256-QAM, 1024-QAM. Dual Carrier Modulation (Dual Carrier Modulation) is a special modulation method. DCM will copy the symbol corresponding to the modulation method to the other half of the frequency domain subcarrier, which will reduce the rate by half to improve transmission reliability. The DCM in the table column 0 means no dual-carrier modulation is used, and 1 means dual-carrier modulation is used. R represents the code rate, N _SD represents the number of data subcarriers, N _BPSCS represents the number of coded bits per single carrier in each spatial stream, and N _CBPS represents each Orthogonal Frequency Division Multiplexing (OFDM) symbol The number of encoded bits in , N _DBPS indicates the number of encoded data bits in each OFDM symbol, and Data rate indicates the data rate.

It can be known from Table 1 that when the GI is 3.6 μs, the MCS is equal to 0, the NSS is equal to 2, and the BW is equal to 80, the corresponding rate is 30.6 Mb/s.

In some embodiments, collecting the rate information corresponding to the transmission data frame of the second WiFi device includes: respectively collecting the rate information corresponding to the second WiFi device sending the data frame and the rate information corresponding to the receiving data frame, that is, respectively recording Rate information corresponding to the second WiFi device in the downlink and rate information corresponding to the second WiFi device in the uplink. Since the rate information corresponding to the uplink and the rate information corresponding to the downlink are collected separately, the accuracy of the rate subsequently determined according to the rate information of different links can be guaranteed. As shown in Figure 4, the first WiFi device can obtain the rate information corresponding to the transmission data frame of the second WiFi device by maintaining the information list shown in Table 2, that is, every time the first WiFi device listens to the second WiFi device When a data frame is transmitted, the rate of the link in the corresponding direction in Table 2 is updated.

Table 2:

Wherein, "UL" in Table 2 indicates an uplink direction, and "DL" indicates a downlink direction.

A2. If the increase ratio of the packet loss rate of the second WiFi device is not greater than the preset first packet loss rate threshold, then in the process of sending data frames by the first WiFi device through the SR function, determine the second WiFi device The second rate is obtained by transmitting the average rate of the fourth number of data frames with the specified terminal.

Wherein, the above-mentioned fourth quantity can be set according to actual needs, and the fourth quantity can be equal to or not equal to the above-mentioned third quantity, which is not limited here. In some embodiments, considering that the packet loss rate is a short-term detection, while the rate detection is a long-time detection, it is necessary to have a long enough time to observe whether there is a drop in the rate. Therefore, the fourth number can be set to be greater than the above-mentioned first The number, and, is larger than the above-mentioned second number, so as to improve the accuracy of the obtained second rate.

Wherein, the data frame sent by the first WiFi device through the SR function may be a data frame actually required to be sent by the first WiFi device, or may be a test-specific data frame. The number of data frames sent by the first WiFi device through the SR function can be set according to actual conditions.

In the embodiment of the present application, the increase ratio of the packet loss rate of the second WiFi device is compared with the preset first packet loss rate threshold, and if it is not greater than the preset first packet loss rate threshold, it indicates that the first WiFi device When the data frame is sent through the SR function, the packet loss rate of the second WiFi device is not greatly affected. At this time, the data frame is continued to be sent through the SR function, and the above-mentioned second rate is determined.

A3. Calculate the reduction ratio of the rate of the second WiFi device according to the first rate and the second rate.

Specifically, the decrease ratio of the rate of the second WiFi device can be calculated according to the following formula: (first rate−second rate)/first rate.

Correspondingly, the above step S34 includes:

B1. If the increase ratio of the packet loss rate of the second WiFi device is not greater than the preset first packet loss rate threshold, and it is determined that the decrease ratio of the rate of the second WiFi device is not greater than the preset first rate threshold , choose to continue sending data frames through the SR function.

Specifically, when it is determined that the increase ratio of the packet loss rate of the second WiFi device is not greater than the preset first packet loss rate threshold, and it is determined that the decrease ratio of the rate of the second WiFi device is not greater than the preset first rate The threshold indicates that sending data frames through the SR function of the first WiFi device has little impact on the packet loss rate and rate of the second WiFi device. At this time, continuing to send data frames through the SR function can effectively increase the network capacity.

In the embodiment of the present application, the data frame that the first WiFi device continues to send through the SR function is the data frame that the first WiFi device actually wants to send, that is, it is not a test-specific data frame. Of course, if the data frame sent by the first WiFi device in step S32 is also the data frame that it actually needs to send, then the data frame sent by the first WiFi device through the SR function at this time is the data frame after the above data frame (assuming that in step S32 S32 is sent to the Nth data frame, then the data frame sent by the SR function at this time is the data frame after the Nth data frame). That is, the content of the data frame sent by the first WiFi device at this time is continuous with the content of the data frame sent by the first WiFi device in step S32, so as to ensure the continuity of the content received by the receiving terminal.

B2. If the increase ratio of the packet loss rate of the second WiFi device is not greater than the preset first packet loss rate threshold, but it is determined that the decrease ratio of the rate of the second WiFi device is greater than the preset first rate threshold , then suspend sending data frames through the SR function, and return to the above-mentioned steps of determining the packet loss rate of the first number of data frames transmitted between the second WiFi device and the designated terminal before the above-mentioned first WiFi device sends data frames through the SR function and the subsequent steps step.

In the embodiment of the present application, if it is determined that the increase ratio of the packet loss rate of the second WiFi device is not greater than the preset first packet loss rate threshold, but it is determined that the decrease ratio of the rate of the second WiFi device is greater than the preset first threshold rate threshold, it indicates that the data frame sent by the first WiFi device through the SR function has little impact on the packet loss rate of the second WiFi device, but has a greater impact on the average rate of the second WiFi device's transmission data frame. Therefore, in order to reduce the impact on Influenced by the average rate of the second WiFi device transmission data frame, the first WiFi device suspends sending data frames by the SR function, and returns to step S31 and subsequent steps (such as step A1, step A2, step A3, step S32, step S33, step S34, etc.), so that the timing when the first WiFi device can use the SR function can be judged in time later, and then the data frame can be sent through the SR function in time. In addition, because packet loss rate detection can detect severe interference, and rate detection is used to detect slight interference, therefore, after confirming that there is no serious interference, determine whether the rate has a relatively large deterioration, that is, after the packet loss rate meets the requirements Then perform rate detection, and finally send data frames through the SR function after both meet the requirements, which can avoid serious interference at a lower cost.

In some embodiments, considering that the successful transmission of wireless communication requires both parties to send signals, for example, OBSS performs a transmission, A is the sender, B is the receiver, the first WiFi device (assumed to be an AP) is the listener, and A sends Data, for the first WiFi device AP, the data frames transmitted by A and B are OBSS data frames, the first WiFi device AP receives the signal, and by analyzing the preamble of the wireless data frame, it can be known that the data frame is not sent to itself of. If B receives A’s data frame, it will respond with an Acknowledged (ACK) frame to A to inform A that the data frame has been sent successfully. The ACK frame is immediately after the OBSS data frame, and other wireless devices must back off. Packages are allowed during this period. If the first WiFi device AP detects that there is a power increase after the OBSS data frame, it can determine that B responds to the ACK frame, and then judge that the OBSS data frame is successfully transmitted this time. In combination with the above scenario, in the embodiment of the present application, the target packet loss rate is determined in the following manner, the target packet loss rate is the above-mentioned first packet loss rate or the above-mentioned second packet loss rate:

C1. Monitor the first power and the second power, wherein the first power is the power within the short frame interval (Short interframe space, SIFS) after the second WiFi device transmits a data frame with the designated terminal, and the above The second power is the power within a preset ACK frame duration after the second WiFi device and the designated terminal have finished transmitting a data frame and after the short frame interval time.

Wherein, the preset ACK frame duration is set according to experience.

C2. If it is judged that the power of the second WiFi device has increased according to the first power and the second power, it is determined that the second WiFi device has successfully transmitted data frames; otherwise, it is determined that the second WiFi device has not successfully transmitted data. frame.

After the first WiFi device monitors that the OBSS data frame is received, it monitors the power in SIFS after the second WiFi device and the designated terminal transmit a data frame, and the power within the time corresponding to "SIFS" in Figure 5 that is about to be monitored power as the first power. If the OBSS data frame is successfully sent, the sender will receive an ACK frame within the preset ACK frame duration after SIFS (that is, the time corresponding to the "ACK" position in Figure 5). The detected power (ie, the second power) within the time corresponding to the ACK will be greater than the detected power (ie, the first power) within the time corresponding to the SIFS, that is, the power of the second WiFi device is rising. Of course, if the OBSS data frame is not successfully sent, the power of the second WiFi device does not increase. Since whether the power of the second WiFi device rises is related to whether the second WiFi device successfully transmits the data frame, it can be accurately determined whether the data frame is successfully transmitted according to whether the power of the second WiFi device rises.

C3. Among the data frames of the statistical target number, the number of data frames successfully transmitted by the second WiFi device and the number of data frames unsuccessfully transmitted by the second WiFi device, according to the number of data frames successfully transmitted and the above unsuccessful The number of transmitted data frames determines the packet loss rate of the first number of data frames transmitted by the second WiFi device and the designated terminal to obtain the target packet loss rate, wherein, when the target packet loss rate is the first packet loss rate , the target number is the above-mentioned first number, and when the target packet loss rate is the above-mentioned second packet loss rate, the target number is the above-mentioned second number.

Specifically, the number of successfully transmitted data frames monitored (assumed to be M1) and the number of data frames that cannot be successfully transmitted (assumed to be M2) are counted, then the first packet loss rate PER is:

PER=M2/(M1+M2).

In some embodiments, the first packet loss rate determined by the first WiFi device is the packet loss rate in the first listening period. At this time, the above step S31 includes:

Before the first WiFi device sends data frames through the SR function, determine the packet loss rate of the first number of data frames transmitted between the second WiFi device and the designated terminal within the first monitoring period, to obtain a first packet loss rate.

After it is determined that the increase ratio of the packet loss rate of the second WiFi device is greater than the preset first packet loss rate threshold, the data transmission method further includes:

Determine the second monitoring period, use the second monitoring period as the new first monitoring period, and return to the above-mentioned before the first WiFi device sends a data frame through the SR function, determine the relationship between the second WiFi device and the first monitoring period in the first monitoring period The step of obtaining the first packet loss rate by transmitting the packet loss rate of the first number of data frames by the designated terminal, and subsequent steps, wherein the second monitoring period is longer than the first monitoring period.

In the embodiment of the present application, if it is judged that the increase ratio of the packet loss rate of the second WiFi device is greater than the preset first packet loss rate threshold, it indicates that the first WiFi device seriously interferes with other devices when sending data frames through the SR function (such as the second WiFi device), at this time, expanding the monitoring period for determining the first packet loss rate can delay the time to obtain the first packet loss rate obtained when the first WiFi device transmits data frames through the SR function, that is By avoiding the current period of severe interference to other devices, it is better to avoid interference to other devices when transmitting data frames through the SR function.

In some embodiments, the above step S31 includes:

Before the first WiFi device sends data frames through the SR function, determine the packet loss rate of the first number of data frames transmitted between the second WiFi device and the designated terminal within the first monitoring period, to obtain a first packet loss rate.

Correspondingly, after the above step B2, the above data transmission method further includes:

Determine the third monitoring period, use the third monitoring period as the new first monitoring period, and return to the above-mentioned before the first WiFi device sends the data frame through the SR function, determine the connection between the second WiFi device and the first monitoring period in the first monitoring period The designated terminal transmits the packet loss rate of the first number of data frames to obtain the first packet loss rate and subsequent steps, wherein the third monitoring period is longer than the first monitoring period.

In the embodiment of the present application, since the increase ratio of the packet loss rate of the second WiFi device is not greater than the preset first packet loss rate threshold, it is determined that the decrease ratio of the rate of the second WiFi device is greater than the preset first rate When the threshold is set, it indicates that although the first WiFi device does not seriously interfere with other devices (such as the second WiFi device) when sending data frames through the SR function, it will cause a large drop in the average rate of other devices when transmitting data frames , at this time, expanding the monitoring period used to determine the first packet loss rate can avoid the current period that will affect the average rate of other devices, that is, by avoiding the period that affects the average rate of other devices to better avoid transmission through the SR function Interference with other devices during data frames.

In some embodiments, the above step S31 includes:

Before the first WiFi device sends data frames through the SR function, determine the packet loss rate of the first number of data frames transmitted between the second WiFi device and the designated terminal within the first monitoring period, to obtain a first packet loss rate.

Correspondingly, the above data transmission method also includes:

In the process of selecting to continue sending data frames through the SR function, determine the packet loss rate of the fifth number of data frames transmitted between the second WiFi device and the designated terminal to obtain a third packet loss rate, and determine the second WiFi device. The average rate of the sixth number of data frames transmitted between the device and the specified terminal to obtain the third rate.

If according to the above-mentioned first packet loss rate and the above-mentioned third packet loss rate, it is determined that the increase ratio of the packet loss rate of the second WiFi device is greater than the preset second packet loss rate threshold, or if according to the above-mentioned first rate and For the above-mentioned third rate, if it is judged that the drop ratio of the rate of the above-mentioned second WiFi device is greater than the preset second rate threshold, then suspend sending data frames through the SR function, reset the above-mentioned first monitoring period to the default value, and then return The step of determining the packet loss rate of the first number of data frames transmitted between the second WiFi device and the designated terminal within the first monitoring period, obtaining the first packet loss rate, and subsequent steps.

Wherein, the above-mentioned fifth quantity and sixth quantity can be set according to the actual situation, such as setting the fifth quantity equal to the first quantity or the value equal to the second quantity, setting the sixth establishment equal to the third quantity or The numerical value of the fourth quantity and the like are not limited here. In some embodiments, considering that the packet loss rate is a short-term detection, while the rate detection is a long-time detection, it is necessary to have a long enough time to observe whether there is a drop in the rate. Therefore, the sixth number can be set to be greater than the above-mentioned fifth quantity.

In the embodiment of the present application, during the process of the first WiFi device sending data frames through the SR function, the packet loss rate and average rate of the second WiFi device are continuously updated, so that the follow-up can timely judge that the first WiFi device sends data frames through the SR function During the process, whether there is greater interference to the second WiFi device. Due to the sudden interference of environmental noise and the interference of the first WiFi device sending data frames through the SR function, the packet loss rate and average rate of the second WiFi device will be deteriorated, and it is difficult for the user to distinguish which kind of interference is currently deteriorating the second WiFi The packet loss rate and average rate of the device. Therefore, when it is judged that the increase ratio of the packet loss rate of the second WiFi device is greater than the preset second packet loss rate threshold, or it is judged that the decrease ratio of the rate of the second WiFi device is greater than After the preset rate threshold, you should suspend the use of SR first, monitor other WiFi devices for a period of time, and then conduct a quick detection to determine whether it is noise interference or the interference of the first WiFi device sending data frames through the SR function. In this embodiment of the application, resetting the first monitoring period to the default value can ensure that the duration of the first monitoring period will not be too long (for example, if the first monitoring period has been extended, the reset period can be restored. The original duration of the first monitoring period), so that after judging that the packet loss rate and average rate of the second WiFi device are not caused by the interference of the first WiFi device sending data frames through the SR function, the first WiFi device can Restore use of SR functionality as soon as possible.

In some embodiments, in the process of choosing to continue sending data frames through the SR function, if it is only judged that the packet loss rate and the average rate of the second WiFi device have deteriorated, then the first monitoring period is extended, that is:

If according to the first packet loss rate and the third packet loss rate, it is determined that the increase ratio of the packet loss rate of the second WiFi device is greater than the second preset packet loss rate threshold, and if according to the first rate and the above The third rate, if it is judged that the drop ratio of the rate of the second WiFi device is greater than the preset second rate threshold, the transmission of data frames through the SR function is suspended, and the fourth monitoring period is determined, and the fourth monitoring period is used as the new The above-mentioned first monitoring period returns to the above-mentioned before the above-mentioned first WiFi device sends data frames through the SR function, and determines the packet loss rate of the first number of data frames transmitted by the above-mentioned second WiFi device and the above-mentioned designated terminal within the first monitoring period, The step of obtaining the first packet loss rate and subsequent steps, wherein the fourth monitoring period is longer than the first monitoring period.

Wherein, the second packet loss rate threshold may be equal to or different from the above first packet loss rate threshold, which is specifically set according to actual conditions and is not limited here. Similarly, the above-mentioned second rate threshold may be equal to or different from the above-mentioned first rate threshold, which is specifically set according to actual conditions and is not limited here.

In the embodiment of the present application, since the monitoring period used to determine the first packet loss rate is expanded, it is possible to avoid the period that currently affects the average rate of other devices, that is, to avoid the period that affects the average rate of other devices to better Avoid interference with other devices when transmitting data frames through the SR function.

In order to more clearly describe the data transmission method provided by the embodiment of the present application, it will be described below in conjunction with FIG. 6 .

When the first WiFi device is sending data frames through SR, it includes four states shown in FIG. 6 : SR monitoring, PER detection, rate detection and SR operation.

SR monitoring: the first WiFi device does not send data frames through the SR function in this state. Used to monitor the average rate and PER of data frames sent by other devices (such as the second WiFi device). After the monitoring period is over, enter the PER detection state.

PER detection: In this state, several (such as X1) SR data frames are sent by the first WiFi device (the SR data frame is a data frame sent through the SR function), and in this process, the PER of the second WiFi device is counted, if If the PER of the SR monitoring period increases by a certain percentage, it is determined that the detection has failed, and the SR monitoring is returned, and the monitoring period is extended at the same time. If it is determined that the detection is successful, it enters the rate detection state.

Rate detection: This state sends SR data frames for a period of time, such as sending X2 (the X2 can be equal to X1 or not equal to X1) data frames, in this process, determine the average rate of the second WiFi device, if compared If the average rate of the monitoring period drops by a certain percentage, it is determined that the detection fails, and the SR monitoring is returned, and the monitoring period is extended at the same time. If it is determined that the detection is successful, it enters the SR running state.

SR operation: SR is always in effect in this state, that is, the first WiFi device continues to send data frames through the SR function in this state, and updates the average rate and PER at the same time. To SR monitoring, and the monitoring period is reset to the default value, which is several seconds.

It should be understood that the sequence numbers of the steps in the above embodiments do not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation to the implementation process of the embodiment of the present application.

Embodiment two:

Corresponding to the data transmission method of the above embodiment, FIG. 7 shows a structural block diagram of the data transmission device provided by the embodiment of the present application. For the convenience of description, only the parts related to the embodiment of the present application are shown.

Referring to Fig. 7, the data transmission device 7 is applied to the first WiFi device, and the first WiFi device supports the spatial multiplexing SR function, and the data transmission device 7 includes: a first packet loss rate determination module 71, a second packet loss rate determination module Module 72 , calculation module 73 of increasing ratio of packet loss rate, module 74 of SR function selection. in:

The first packet loss rate determination module 71 is used to determine the packet loss rate of the first number of data frames transmitted between the second WiFi device and the designated terminal before the first WiFi device sends the data frame through the SR function, so as to obtain the first packet loss rate Rate.

The second packet loss rate determination module 72 is configured to determine the packet loss rate of the second number of data frames transmitted between the second WiFi device and the designated terminal during the process of the first WiFi device sending data frames through the SR function, to obtain The second packet loss rate.

The increase ratio calculation module 73 of the packet loss rate is configured to calculate the increase ratio of the packet loss rate of the second WiFi device according to the first packet loss rate and the second packet loss rate.

The SR function selection module 74 is configured to select whether to continue sending data frames through the SR function according to the increase ratio of the packet loss rate of the second WiFi device.

In the embodiment of this application, since the first packet loss rate is the packet loss rate of the first number of data frames transmitted between the second WiFi device and the designated terminal before the first WiFi device sends data frames through the SR function, the second packet loss rate is During the process of sending data frames by the first WiFi device through the SR function, the packet loss rate of the second number of data frames transmitted by the second WiFi device and the designated terminal, therefore, calculated according to the first packet loss rate and the second packet loss rate The increase ratio of the packet loss rate of the second WiFi device reflects the impact on the packet loss rate of the second WiFi device when the first WiFi device sends data frames through the SR function. That is to say, in the embodiment of this application, when the first WiFi device uses the SR function to send packets, it evaluates the interference degree of its own packet sending to the second WiFi device communication, and intelligently decides whether to send SR packets at present, which is beneficial to reduce the When the device uses the SR function, the packet loss rate of the second WiFi device is too large, which is conducive to ensuring the overall network performance.

In some embodiments, the above-mentioned SR function selection module 74 includes:

If it is determined that the increase ratio of the packet loss rate of the second WiFi device is greater than the preset first packet loss rate threshold, choose not to continue sending data frames through the SR function.

In some embodiments, the data transmission device 7 provided in the embodiment of the present application further includes:

The first rate determination module is configured to determine an average rate at which the second WiFi device transmits a third number of data frames with the designated terminal before the first WiFi device sends data frames through the SR function to obtain a first rate.

The second rate determination module is configured to: if the increase ratio of the packet loss rate of the second WiFi device is not greater than the preset first packet loss rate threshold, during the process of sending data frames by the first WiFi device through the SR function, Determining an average rate at which the second WiFi device transmits the fourth number of data frames with the designated terminal to obtain a second rate.

The rate reduction ratio calculation module is configured to calculate the rate reduction ratio of the second WiFi device according to the first rate and the second rate.

Correspondingly, the above-mentioned SR function selection module 74 includes:

The SR data frame sending unit is used for if the increase ratio of the packet loss rate of the second WiFi device is not greater than the preset first packet loss rate threshold, and it is determined that the decrease ratio of the rate of the second WiFi device is not greater than the preset If the first rate threshold is set, choose to continue sending data frames through the SR function.

The SR data frame pause sending unit is used for if the increase ratio of the packet loss rate of the second WiFi device is not greater than the first preset packet loss rate threshold, but it is judged that the decrease ratio of the rate of the second WiFi device is greater than the above-mentioned The preset first rate threshold, then suspend sending data frames through the SR function, and return to the above-mentioned before the above-mentioned first WiFi device sends data frames through the SR function, determine that the second WiFi device and the designated terminal transmit the first number of data frames The steps of the packet loss rate and the next steps.

In some embodiments, the target packet loss rate is determined in the following manner. The target packet loss rate is the above-mentioned first packet loss rate or the above-mentioned second packet loss rate. At this time, the above-mentioned first packet loss rate determination module 71 or the second packet loss rate Packet loss rate determination module 72 includes:

A power monitoring unit, configured to monitor the first power and the second power, wherein the first power is the power within a short frame interval after the second WiFi device transmits a data frame with the designated terminal, and the second power The power for the second WiFi device and the specified terminal to transmit a data frame ends and within a preset ACK frame duration after the short frame interval time.

A data frame transmission success judging unit, configured to determine that the second WiFi device successfully transmits a data frame if it is determined based on the first power and the second power that the power of the second WiFi device has risen, otherwise, determine that the above-mentioned The second WiFi device did not successfully transmit the data frame.

The packet loss rate calculation unit is used to count the number of data frames successfully transmitted by the second WiFi device and the number of data frames unsuccessfully transmitted by the second WiFi device among the data frames of the target number, according to the above-mentioned successfully transmitted data frames The quantity and the quantity of the above-mentioned unsuccessfully transmitted data frames determine the packet loss rate of the above-mentioned second WiFi device and the above-mentioned specified terminal transmitting the above-mentioned target number of data frames, and obtain the above-mentioned target packet loss rate, wherein, when the target packet loss rate When it is the first packet loss rate, the target number is the first number, and when the target packet loss rate is the second packet loss rate, the target number is the second number.

In some embodiments, the above-mentioned first packet loss rate determining module 71 is specifically used for:

Before the first WiFi device sends data frames through the SR function, determine the packet loss rate of the first number of data frames transmitted between the second WiFi device and the designated terminal within the first monitoring period, to obtain a first packet loss rate.

After it is determined that the increase ratio of the packet loss rate of the second WiFi device is greater than the preset first packet loss rate threshold, the data transmission device 7 further includes:

The second monitoring period determination module is used to determine the second monitoring period, using the second monitoring period as the new first monitoring period, and returning to the above-mentioned first before the first WiFi device sends a data frame through the SR function to determine the first The step of obtaining the first packet loss rate and the subsequent steps of obtaining the packet loss rate of the first number of data frames transmitted by the second WiFi device and the designated terminal within the monitoring period, wherein the second monitoring period is greater than the first monitoring period .

In some embodiments, the above-mentioned first packet loss rate determining module 71 is specifically used for:

Before the first WiFi device sends data frames through the SR function, determine the packet loss rate of the first number of data frames transmitted between the second WiFi device and the designated terminal within the first monitoring period, to obtain a first packet loss rate.

After it is judged that the drop ratio of the rate of the second WiFi device is greater than the preset first rate threshold, the data transmission transposition 7 further includes:

The third monitoring period determination module is used to determine the third monitoring period, using the third monitoring period as the new first monitoring period, and returning to the above-mentioned first WiFi device before sending data frames through the SR function to determine the first The step of obtaining the first packet loss rate and subsequent steps of the packet loss rate of the first number of data frames transmitted by the second WiFi device and the designated terminal within the monitoring period, wherein the third monitoring period is greater than the first monitoring period .

In some embodiments above, the above-mentioned first packet loss rate determining module 71 is specifically used for:

Before the first WiFi device sends data frames through the SR function, determine the packet loss rate of the first number of data frames transmitted between the second WiFi device and the designated terminal within the first monitoring period, to obtain a first packet loss rate.

Correspondingly, the above-mentioned data transmission device 7 also includes:

The packet loss rate and rate continue monitoring module is used to determine the packet loss rate of the fifth number of data frames transmitted between the second WiFi device and the designated terminal in the process of selecting to continue sending data frames through the SR function, and obtain the third A packet loss rate, and determining an average rate at which the second WiFi device and the specified terminal transmit a sixth number of data frames to obtain a third rate.

The monitoring cycle reset module is used to determine that the increase ratio of the packet loss rate of the second WiFi device is greater than the preset second packet loss rate threshold according to the first packet loss rate and the third packet loss rate, and , if it is judged according to the above-mentioned first rate and the above-mentioned third rate that the decrease ratio of the rate of the second WiFi device is greater than the above-mentioned preset second rate threshold, then suspend sending data frames through the SR function, and send the above-mentioned first monitoring After the period is reset to the default value, return to the steps of determining the packet loss rate of the first number of data frames transmitted between the second WiFi device and the designated terminal within the first monitoring period, and obtain the first packet loss rate and subsequent steps.

It should be noted that the information interaction and execution process between the above-mentioned devices/units are based on the same concept as the method embodiment of the present application, and its specific functions and technical effects can be found in the method embodiment section. I won't repeat them here.

Embodiment three:

FIG. 8 is a schematic structural diagram of an electronic device provided by an embodiment of the present application. As shown in Figure 8, the electronic device 8 of this embodiment includes: at least one processor 80 (only one processor is shown in Figure 8), a memory 81, and stored in the memory 81 and can be processed in the at least one processor. A computer program 82 running on the processor 80, when the processor 80 executes the computer program 82, implements the steps in any of the above method embodiments.

The electronic device 8 may be computing devices such as routers, mobile phones, desktop computers, notebooks, palmtop computers, and cloud servers. The electronic device may include, but not limited to, a processor 80 and a memory 81 . Those skilled in the art can understand that FIG. 8 is only an example of the electronic device 8, and does not constitute a limitation to the electronic device 8. It may include more or less components than shown in the figure, or combine certain components, or different components. , for example, may also include input and output devices, network access devices, and so on.

The so-called processor 80 can be a central processing unit (Central Processing Unit, CPU), and the processor 80 can also be other general processors, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit , ASIC), Field-Programmable Gate Array (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like.

The storage 81 may be an internal storage unit of the electronic device 8 in some embodiments, such as a hard disk or memory of the electronic device 8 . The memory 81 may also be an external storage device of the electronic device 8 in other embodiments, such as a plug-in hard disk equipped on the electronic device 8, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) card, flash memory card (Flash Card), etc. Further, the memory 81 may also include both an internal storage unit of the electronic device 8 and an external storage device. The memory 81 is used to store operating system, application program, boot loader (BootLoader), data and other programs, such as the program code of the computer program. The memory 81 can also be used to temporarily store data that has been output or will be output.

Those skilled in the art can clearly understand that for the convenience and brevity of description, only the division of the above-mentioned functional units and modules is used for illustration. In practical applications, the above-mentioned functions can be assigned to different functional units, Completion of modules means that the internal structure of the device is divided into different functional units or modules to complete all or part of the functions described above. Each functional unit and module in the embodiment may be integrated into one processing unit, or each unit may exist separately physically, or two or more units may be integrated into one unit, and the above-mentioned integrated units may adopt hardware It can also be implemented in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the protection scope of the present application. For the specific working processes of the units and modules in the above system, reference may be made to the corresponding processes in the aforementioned method embodiments, and details will not be repeated here.

The embodiment of the present application also provides a network device, which includes: at least one processor, a memory, and a computer program stored in the memory and operable on the at least one processor, and the processor executes The computer program implements the steps in any of the above method embodiments.

The embodiment of the present application also provides a computer-readable storage medium, the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps in each of the foregoing method embodiments can be realized.

An embodiment of the present application provides a computer program product. When the computer program product runs on an electronic device, the electronic device can implement the steps in the foregoing method embodiments when executed.

If the integrated unit is realized in the form of a software function unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, all or part of the procedures in the method of the above-mentioned embodiments in the present application can be completed by instructing related hardware through a computer program. The computer program can be stored in a computer-readable storage medium. The computer program When executed by a processor, the steps in the above-mentioned various method embodiments can be realized. Wherein, the computer program includes computer program code, and the computer program code may be in the form of source code, object code, executable file or some intermediate form. The computer-readable medium may at least include: any entity or device capable of carrying computer program codes to the photographing device/electronic device, recording medium, computer memory, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), electrical carrier signal, telecommunication signal, and software distribution medium. Such as U disk, mobile hard disk, magnetic disk or optical disk, etc. In some jurisdictions, computer readable media may not be electrical carrier signals and telecommunication signals under legislation and patent practice.

In the above-mentioned embodiments, the descriptions of each embodiment have their own emphases, and for parts that are not detailed or recorded in a certain embodiment, refer to the relevant descriptions of other embodiments.

Those skilled in the art can appreciate that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present application.

In the embodiments provided in this application, it should be understood that the disclosed device/network device and method may be implemented in other ways. For example, the device/network device embodiments described above are only illustrative. For example, the division of the modules or units is only a logical function division. In actual implementation, there may be other division methods, such as multiple units Or components may be combined or may be integrated into another system, or some features may be omitted, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.

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

The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still implement the foregoing Modifications to the technical solutions described in the examples, or equivalent replacement of some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the application, and should be included in the Within the protection scope of this application.

Claims (10)

1. A data transmission method, characterized in that it is applied to a first WiFi device, and the first WiFi device supports a spatial multiplexing SR function, and the data transmission method comprises: Before the first WiFi device sends data frames through the SR function, determine the packet loss rate of the first number of data frames transmitted between the second WiFi device and the designated terminal to obtain the first packet loss rate; In the process of sending data frames by the first WiFi device through the SR function, determine the packet loss rate of the second number of data frames transmitted between the second WiFi device and the designated terminal, to obtain a second packet loss rate; calculating the increase ratio of the packet loss rate of the second WiFi device according to the first packet loss rate and the second packet loss rate; According to the increase ratio of the packet loss rate of the second WiFi device, it is selected whether to continue sending data frames through the SR function. 2. The data transmission method according to claim 1, wherein the selection of whether to continue sending data frames through the SR function according to the rising ratio of the packet loss rate of the second WiFi device includes: If it is determined that the increase ratio of the packet loss rate of the second WiFi device is greater than the preset first packet loss rate threshold, choose not to continue sending data frames through the SR function. 3. The data transmission method according to claim 1, further comprising: Before the first WiFi device sends the data frame through the SR function, determine the average rate of the third number of data frames transmitted by the second WiFi device and the designated terminal to obtain the first rate; If the increase ratio of the packet loss rate of the second WiFi device is not greater than the preset first packet loss rate threshold, then during the process of sending data frames by the first WiFi device through the SR function, it is determined that the second WiFi The device and the designated terminal transmit the average rate of the fourth number of data frames to obtain the second rate; calculating a drop ratio of the rate of the second WiFi device according to the first rate and the second rate; According to the increase ratio of the packet loss rate of the second WiFi device, selecting whether to continue sending data frames through the SR function includes: If the increase ratio of the packet loss rate of the second WiFi device is not greater than the preset first packet loss rate threshold, and it is determined that the decrease ratio of the rate of the second WiFi device is not greater than the preset first rate threshold, choose to continue sending data frames through the SR function; If the increase ratio of the packet loss rate of the second WiFi device is not greater than the preset first packet loss rate threshold, but it is determined that the decrease ratio of the rate of the second WiFi device is greater than the preset first threshold rate threshold, then suspend sending data frames through the SR function, and return to the packet loss rate of determining the first number of data frames transmitted between the second WiFi device and the specified terminal before the first WiFi device sends data frames through the SR function steps and subsequent steps. 4. The data transmission method according to claim 1, wherein the target packet loss rate is determined in the following manner, the target packet loss rate is the first packet loss rate or the second packet loss rate: Monitoring the first power and the second power, wherein the first power is the power within a short frame interval after the end of the second WiFi device transmitting a data frame with the specified terminal, and the second power is the power of the specified terminal The second WiFi device transmits a data frame with the designated terminal, and the power within the preset ACK frame duration after the short frame interval time; If it is determined according to the first power and the second power that the power of the second WiFi device has risen, it is determined that the second WiFi device has successfully transmitted the data frame; otherwise, it is determined that the second WiFi device has not The data frame is successfully transmitted; Counting the number of data frames successfully transmitted by the second WiFi device and the number of data frames unsuccessfully transmitted by the second WiFi device among the target number of data frames, according to the number of successfully transmitted data frames and the The number of unsuccessfully transmitted data frames determines the packet loss rate at which the second WiFi device transmits the target number of data frames with the specified terminal to obtain the target packet loss rate, wherein, when the target packet loss rate When it is the first packet loss rate, the target number is the first number, and when the target packet loss rate is the second packet loss rate, the target number is the second number. 5. The data transmission method according to claim 2, wherein before the first WiFi device transmits the data frame through the SR function, it is determined that the second WiFi device and the specified terminal transmit the first number of data frames Packet loss rate, get the first packet loss rate, including: Before the first WiFi device sends data frames through the SR function, determine the packet loss rate of the first number of data frames transmitted by the second WiFi device and the designated terminal within the first listening period, to obtain the first loss rate packet rate; After it is determined that the increase ratio of the packet loss rate of the second WiFi device is greater than the preset first packet loss rate threshold, the data transmission method further includes: Determine the second monitoring period, use the second monitoring period as the new first monitoring period, and return to the above-mentioned before the first WiFi device sends a data frame through the SR function, determine the first monitoring period. The second WiFi device transmits the packet loss rate of the first number of data frames with the designated terminal to obtain the first packet loss rate and subsequent steps, wherein the second monitoring period is greater than the first monitoring period . 6. The data transmission method according to claim 3, wherein before the first WiFi device sends data frames through the SR function, it is determined that the second WiFi device and the specified terminal transmit the first number of data frames Packet loss rate, get the first packet loss rate, including: Before the first WiFi device sends data frames through the SR function, determine the packet loss rate of the first number of data frames transmitted by the second WiFi device and the designated terminal within the first listening period, to obtain the first loss rate package rate; After it is determined that the decrease ratio of the rate of the second WiFi device is greater than the preset first rate threshold, the data transmission method further includes: Determine a third listening period, use the third listening period as the new first listening period, and return to the determination of the first listening period in the first listening period before the first WiFi device sends a data frame through the SR function The second WiFi device transmits the packet loss rate of the first number of data frames with the specified terminal to obtain the first packet loss rate and subsequent steps, wherein the third monitoring period is greater than the first monitoring period . 7. The data transmission method according to claim 3 or 6, wherein before the first WiFi device sends a data frame through the SR function, it is determined that the second WiFi device and the designated terminal transmit the first amount of data The packet loss rate of the frame, the first packet loss rate is obtained, including: Before the first WiFi device sends data frames through the SR function, determine the packet loss rate of the first number of data frames transmitted by the second WiFi device and the designated terminal within the first listening period, to obtain the first loss rate packet rate; The data transmission method also includes: In the process of selecting to continue sending data frames through the SR function, determine the packet loss rate of the fifth number of data frames transmitted between the second WiFi device and the designated terminal to obtain a third packet loss rate, and determine the The average rate at which the second WiFi device transmits the sixth number of data frames with the specified terminal to obtain a third rate; If according to the first packet loss rate and the third packet loss rate, it is determined that the increase ratio of the packet loss rate of the second WiFi device is greater than the preset second packet loss rate threshold, or if according to the The first rate and the third rate, if it is determined that the decrease ratio of the rate of the second WiFi device is greater than the preset second rate threshold, then suspend sending data frames through the SR function, and restart the first monitoring period After being set to the default value, return to the step of determining the packet loss rate of the first number of data frames transmitted by the second WiFi device and the designated terminal during the first listening period, and obtain the first packet loss rate and subsequent steps step. 8. A data transmission device, characterized in that it is applied to a first WiFi device, and the first WiFi device supports a spatial multiplexing SR function, and the data transmission device includes: The first packet loss rate determination module is used to determine the packet loss rate of the first number of data frames transmitted between the second WiFi device and the designated terminal before the first WiFi device sends the data frame through the SR function, so as to obtain the first packet loss rate Rate; A second packet loss rate determining module, configured to determine the packet loss rate of the second number of data frames transmitted between the second WiFi device and the specified terminal during the process of the first WiFi device sending data frames through the SR function , get the second packet loss rate; The increase ratio calculation module of the packet loss rate is used to calculate the increase ratio of the packet loss rate of the second WiFi device according to the first packet loss rate and the second packet loss rate; The SR function selection module is configured to select whether to continue sending data frames through the SR function according to the increase ratio of the packet loss rate of the second WiFi device. 9. An electronic device, comprising a memory, a processor, and a computer program stored in the memory and operable on the processor, characterized in that, when the processor executes the computer program, the computer program according to claim 1 is realized. The method described in any one of 1 to 7. 10. A computer-readable storage medium storing a computer program, wherein the computer program implements the method according to any one of claims 1 to 7 when executed by a processor.