WO2021169973A1

WO2021169973A1 - Wireless data transmission method and apparatus, storage medium, and sta

Info

Publication number: WO2021169973A1
Application number: PCT/CN2021/077564
Authority: WO
Inventors: 赵育仁; 徐彦超; 余庆华
Original assignee: 展讯通信（上海）有限公司
Priority date: 2020-02-28
Filing date: 2021-02-24
Publication date: 2021-09-02
Also published as: CN111343729B; CN111343729A

Abstract

A wireless data transmission method and apparatus, a storage medium, and an STA. Said method comprises: determining an original back off window; on the basis of the original back off window, randomly determining a back off initial value, and performing back off by using the back off initial value; at each back off interval, if the status of a primary channel is idle, determining an available total bandwidth, and determining, according to the available total bandwidth, a back off reduction step size at the back off interval; obtaining an updated back off value at each back off interval according to the back off reduction step size; and when the updated back off value is equal to or less than zero and the control right of a TXOP is obtained, using the TXOP to transmit the wireless data. The present invention can facilitate increasing the probability that a larger available total bandwidth is selected, thereby having the opportunity to use a higher bandwidth for transmission to increase the data transmission efficiency of a system.

Description

Wireless data transmission method and device, storage medium, STA

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office on February 28, 2020, the application number is 202010131978.7, and the invention title is "wireless data transmission method and device, storage medium, STA", the entire content of which is incorporated by reference In this application.

Technical field

The present invention relates to the field of communication technology, in particular to a wireless data transmission method and device, storage medium, and STA.

Background technique

In the traditional Institute of Electrical and Electronics Engineers 802.11 (Institute of Electrical and Electronics Engineers 802.11, IEEE 802.11) protocol, only a single link system is defined, such as the Wireless Local Area Network (WLAN) protocol. With the development of technology, the synchronous multi-link system transmission mode is discussed in 802.11be.

In wireless data transmission technology, transmission opportunity (Transmission Opportunity, TXOP) competition is an important content of wireless channel access, which is composed of an initial time and a maximum duration (TXOP limit). Specifically, the TXOP can be obtained through competition or allocation, and the station that obtains the TXOP can continuously use the channel to transmit multiple data frames within the TXOP limit time without having to compete for the channel again.

In a single link system, due to adjacent channel interference, the usable bandwidth of the sender or receiver is often limited due to interference. In addition, the usable bandwidth between the sender and receiver may be different. Therefore, there are many Bandwidth combination often uses smaller bandwidth to transmit data in order to meet the needs of the smaller bandwidth party, resulting in lower transmission efficiency. For example, Primary20, Primary40, Primary80 or other bandwidths can be used respectively. Among them, when the status of the primary channel (for example, a 20MHz channel) (such as channel 1) is idle, and the status of the remaining non-primary channels are all busy, only "Primary20" can be used, and the available bandwidth at this time is 20MHz. When the status of the primary channel (for example, a 40MHz channel) (such as channels 1 and 2) is idle, and the status of the remaining non-primary channels are all busy, only "Primary40" can be used, and the available bandwidth at this time is 40MHz. When the status of the primary channel (for example, an 80MHz channel) (such as

channels

1, 2, 3, and 4) is idle, and the status of the remaining non-primary channels are all busy, only "Primary80" can be used, and the available bandwidth at this time is 80MHz .

This problem is more serious in a synchronous multi-link system, and the problem of lower transmission efficiency is more likely to occur. Specifically, in a synchronous multi-link system, no matter whether the wireless data transmission bandwidth parameter (such as the latest wireless data transmission bandwidth) is too large or too small, the reciprocal value is randomly determined based on the same backoff window, and then the same reciprocal is used Decrease the step length and perform the reciprocal, so that the smaller available bandwidth (such as 20MHz) or the larger available bandwidth (such as 80MHz) has a similar probability of being selected for sending wireless data, which leads to the use of smaller available bandwidth. , The problem of low data transmission efficiency of the system.

Summary of the invention

The technical problem solved by the present invention is to provide a wireless data transmission method and device, storage medium, and STA, which can help increase the probability that a larger total available bandwidth is selected, so that there is an opportunity to use higher bandwidth transmission to improve system performance. Data transmission efficiency.

To solve the above technical problem, an embodiment of the present invention provides a wireless data transmission method, including the following steps: determining an original back-off window; based on the original back-off window, randomly determining an initial value of the reciprocal, and using the initial value of the reciprocal to perform the reciprocal; In each reciprocal time interval, if the status of the main channel is idle, the total available bandwidth is determined, and the reciprocal reduction step in the reciprocal time interval is determined according to the total available bandwidth; the step is reduced according to the reciprocal, An updated reciprocal value is obtained at each reciprocal time interval; when the updated reciprocal value is less than or equal to zero and the control right of the TXOP is obtained, the wireless data is sent using the TXOP.

Optionally, determining the reciprocal reduction step in the reciprocal time interval according to the available total bandwidth includes: the larger the available total bandwidth, the larger the reciprocal reduction step in the reciprocal time interval.

Optionally, the reciprocal reduction step size has a linear relationship with the total available bandwidth.

Optionally, the reciprocal reduction step size and the available total bandwidth satisfy one or more of the following: if the available total bandwidth is 20 MHz, the reciprocal reduction step size is 0.5; if the available total bandwidth is 40 MHz, the reciprocal reduction step size is 1; if the available total bandwidth is 60 MHz, the reciprocal reduction step size is 1.5; if the available total bandwidth is 80 MHz, the reciprocal reduction step size is 2.

Optionally, the reciprocal reduction step size is selected from an integer and a non-integer.

Optionally, the reciprocal reduction step size is selected from 0.1 to 5.

Optionally, reducing the step size according to the reciprocal of the reciprocal time interval, and obtaining the updated reciprocal value at each reciprocal time interval includes: at each reciprocal time interval, subtracting the reciprocal value obtained from the previous reciprocal time interval The reciprocal of the reciprocal time interval is reduced by the step size to obtain the updated reciprocal value.

In order to solve the above technical problem, an embodiment of the present invention provides a wireless data transmission device, including: an original window determining module, adapted to determine the original back-off window; an initial value determining module for the reciprocal, adapted to randomly determine the reciprocal based on the original back-off window The initial value, and the reciprocal initial value is used for the reciprocal; the available total bandwidth determining module is suitable for determining the available total bandwidth at each reciprocal time interval if the state of the main channel is idle, and determining the available total bandwidth according to the available total bandwidth Decrease the step length at the reciprocal of the reciprocal time interval; the reciprocal value determining module is adapted to reduce the step size according to the reciprocal of the reciprocal time interval, and obtain the updated reciprocal value at each reciprocal time interval; the sending module is suitable for when When the updated reciprocal value is less than or equal to zero and the control right of the TXOP is obtained, the TXOP is used to send the wireless data.

In order to solve the above technical problem, an embodiment of the present invention provides a storage medium on which computer instructions are stored, and the steps of the wireless data transmission method are executed when the computer instructions are executed.

In order to solve the above technical problem, an embodiment of the present invention provides an STA, including a memory and a processor, the memory stores computer instructions that can run on the processor, and the processor executes when the computer instructions are executed. The steps of the above-mentioned wireless data transmission method.

Compared with the prior art, the technical solution of the embodiment of the present invention has the following beneficial effects:

In the embodiment of the present invention, the original back-off window is determined; based on the original back-off window, the reciprocal initial value is randomly determined, and the reciprocal initial value is used for the reciprocal; at each reciprocal time interval, if the state of the main channel is idle, Then determine the available total bandwidth, and determine the reciprocal reduction step size in the reciprocal time interval according to the available total bandwidth; reduce the step size according to the reciprocal number, and obtain the updated reciprocal value at each reciprocal time interval; When the updated reciprocal value is less than or equal to zero and the control right of the TXOP is obtained, the TXOP is used to send the wireless data. Using the above solution, by determining the reciprocal reduction step size in the reciprocal time interval according to the available total bandwidth, and then reducing the step size according to the reciprocal of the reciprocal time interval, the updated reciprocal value is obtained at each reciprocal time interval, Therefore, there is an opportunity to use different reciprocals to reduce the step size. Compared with the fixed reciprocals used in the prior art to reduce the step size, the solution of the embodiment of the present invention may have the opportunity to increase the larger available total bandwidth (such as 80 MHz). The probability of selection, thereby having the opportunity to use higher bandwidth transmission to improve the data transmission efficiency of the system.

Further, the greater the total available bandwidth, the greater the reduction step size of the reciprocal of the reciprocal time interval. In the embodiment of the present invention, the larger the available total bandwidth has a larger reciprocal to reduce the step size, and improve the comparison. The probability that a large available total bandwidth (such as 80MHz) is selected, so that there is an opportunity to use higher bandwidth transmission to improve the data transmission efficiency of the system.

Further, the reciprocal reduction step size has a linear relationship with the total available bandwidth. In the embodiment of the present invention, the probability that a larger available total bandwidth (such as 80 MHz) is selected can be uniformly increased, thereby improving the data transmission of the system. At the same time of efficiency, the stability of data transmission of the system is maintained.

Furthermore, in the embodiment of the present invention, the reciprocal reduction step size is selected from integer and non-integer. Compared with the prior art, it can only be selected from a fixed integer value. The solution of the embodiment of the present invention can improve the system While improving the data transmission efficiency, it also improves the data transmission flexibility of the system.

Description of the drawings

Figure 1 is a flowchart of a wireless data transmission method in an embodiment of the present invention;

2 is a schematic diagram of the relationship between the available total bandwidth and the reciprocal reduction step size in an embodiment of the present invention;

Fig. 3 is a schematic structural diagram of a wireless data transmission device in an embodiment of the present invention.

Detailed ways

As mentioned above, in the existing single-link system of wireless data transmission technology, the usable bandwidth of the transmitting end or the receiving end is often limited due to the existence of interference in the use environment with interference. In addition, the transmitting end and the The usable bandwidth between the receiving ends may also be different. Therefore, there are multiple bandwidth combinations, which often results in the use of smaller bandwidth to transmit data in order to meet the needs of the smaller bandwidth party, resulting in lower transmission efficiency. For example, Primary20, Primary40, Primary80 or other bandwidths can be used respectively. Among them, when the state of the primary 20MHz channel (such as channel 1) is idle and the states of the other non-primary channels are all busy, only "Primary20" can be used, and the available bandwidth at this time is 20MHz. When the status of the main 40MHz channel (such as channel 1, 2) is idle and the status of the other non-primary channels are all busy, only "Primary40" can be used, and the available bandwidth at this time is 40MHz. When the status of the primary 80MHz channel (such as

channels

1, 2, 3, and 4) is idle, and the status of the remaining non-primary channels are all busy, only "Primary80" can be used, and the available bandwidth at this time is 80MHz.

The inventor of the present invention has discovered through research that in the prior art, in a synchronous multi-link system, no matter whether the wireless data transmission bandwidth parameter (such as the latest wireless data transmission bandwidth) is too large or too small, it is based on the same backoff. The window randomly determines the actual reciprocal value, so that the smaller available bandwidth (such as 20MHz) or the larger available total bandwidth (such as 80MHz) has a similar probability of being selected for sending wireless data, which in turn leads to the use of smaller available bandwidths. The problem of low data transmission efficiency of the system when bandwidth is used.

In the embodiment of the present invention, the original back-off window is determined; based on the original back-off window, the reciprocal initial value is randomly determined, and the reciprocal initial value is used for the reciprocal; at each reciprocal time interval, if the state of the main channel is idle, Then determine the available total bandwidth, and determine the reciprocal reduction step size in the reciprocal time interval according to the available total bandwidth; reduce the step size according to the reciprocal number, and obtain the updated reciprocal value at each reciprocal time interval; When the updated reciprocal value is less than or equal to zero and the control right of the TXOP is obtained, the TXOP is used to send the wireless data. Using the above solution, by setting the upper limit offset of the original backoff window, the upper limit of the actual backoff window can be adjusted, so that when the actual reciprocal value is randomly determined based on the actual backoff window, there is an opportunity to set different wireless data transmission bandwidths The parameters have different window upper limit offsets, and after the actual reciprocal value is randomly determined based on the actual backoff window, it helps to increase the probability that a larger available total bandwidth (such as 80MHz) is selected, so that there is a chance to adopt higher Bandwidth transmission to improve the data transmission efficiency of the system.

In order to make the above objectives, features and beneficial effects of the present invention more obvious and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Referring to FIG. 1, FIG. 1 is a flowchart of a wireless data transmission method in an embodiment of the present invention. The wireless data transmission method may be used in a station (Station, STA), and may include step S11 to step S15:

Step S11: Determine the original back-off window;

Step S12: Based on the original backoff window, randomly determine an initial value of the reciprocal, and use the initial value of the reciprocal to perform the reciprocal;

Step S13: In each countdown time interval, if the status of the main channel is idle, determine the total available bandwidth, and determine the reciprocal reduction step in the countdown time interval according to the total available bandwidth;

Step S14: Decrease the step size according to the reciprocal, and obtain an updated reciprocal value at each reciprocal time interval;

Step S15: When the updated reciprocal value is less than or equal to zero and the control right of the TXOP is obtained, the wireless data is sent using the TXOP.

In the specific implementation of step S11, an appropriate method may be adopted to determine the original backoff window.

In a prior art, the step of the STA obtaining the control right of the TXOP via the TXOP competition may include: randomly determining the reciprocal initial value from the back-off window. In the embodiment of the present application, the original back-off window may be determined by the manner of determining the back-off window in the prior art.

In the specific implementation of step S12, the reciprocal method in the prior art may be adopted, based on the original backoff window, the initial value of the reciprocal is randomly determined, and the initial value of the reciprocal is used for the reciprocal.

In the specific implementation of step S13, at each backoff interval, when the state of the main channel (for example, 20MHz) is idle, the total available bandwidth is determined, and the available total bandwidth is determined to be in the inverse The reciprocal of the time interval reduces the step size.

Wherein, the available total bandwidth (Available Total Bandwidth, ATBW) is used to indicate the available total bandwidth that can be used if the STA sends data after the countdown time interval. Specifically, if the wireless data transmission method is used for single link data transmission, the total available bandwidth can be regarded as the available bandwidth of a link, for example, the available bandwidth of the single link; if the wireless data transmission When the method is used for multi-link data transmission, the total available bandwidth can be regarded as the sum of the available bandwidth of multiple links.

Further, the step of determining the reciprocal reduction step size in the reciprocal time interval according to the available total bandwidth may include: the larger the available total bandwidth, the larger the reciprocal reduction step size in the reciprocal time interval.

In the embodiment of the present invention, the step size can be reduced by having a larger total available bandwidth with a larger reciprocal, so that it is easier to count down to zero with a smaller number of reciprocals, that is, when multiple STAs with different transmission bandwidths are in When competing for channels, increase the probability that STAs with a larger total available bandwidth (such as 80 MHz) will successfully compete for the channel, so that the system has a higher chance to use higher bandwidth transmission to improve the data transmission efficiency of the system.

Furthermore, the reciprocal reduction step size may have a linear relationship with the total available bandwidth.

In the embodiment of the present invention, by setting the reciprocal reduction step size to have a linear relationship with the total available bandwidth, the probability that a larger total available bandwidth (such as 80MHz) is selected can be uniformly increased, thereby improving the data transmission of the system. At the same time of efficiency, the stability of data transmission of the system is maintained.

Further, the reciprocal reduction step size can be selected from an integer and a non-integer.

Specifically, in the prior art, the reciprocal reduction step length is fixed to 1, and in the embodiment of the present invention, the reciprocal reduction step length can be set to other values than 1, that is, it can include non-integer numbers.

Furthermore, the reciprocal reduction step size may be selected from 0.1 to 5.

In the embodiment of the present invention, the reciprocal reduction step size is selected from an integer and a non-integer. Compared with the prior art, it can only be selected from a fixed integer value. The solution of the embodiment of the present invention can improve the data of the system. While transmitting efficiency, improve the data transmission flexibility of the system.

Referring to FIG. 2, FIG. 2 is a schematic diagram of the relationship between the available total bandwidth and the reciprocal reduction step size in an embodiment of the present invention.

Specifically, the reciprocal reduction step size and the available total bandwidth satisfy one or more of the following: if the available total bandwidth is 20 MHz, the reciprocal reduction step size is 0.5; if the available total bandwidth is 40 MHz , The reciprocal reduction step size is 1; if the available total bandwidth is 60 MHz, the reciprocal reduction step size is 1.5; if the available total bandwidth is 80 MHz, the reciprocal reduction step size is 2.

It should be pointed out that other appropriate reciprocal reduction step size values can also be used. In the embodiment of the present invention, the specific value of the reciprocal reduction step size is not limited. For example, in another specific application, if the total available bandwidth is 20MHz, the reciprocal reduction step size is 0.4; if the total available bandwidth is 40MHz, the reciprocal reduction step size is 0.8; if the If the total available bandwidth is 60MHz, the reciprocal reduction step size is 1.2; if the total available bandwidth is 80MHz, the reciprocal reduction step size is 1.6; in another specific application, if the total available bandwidth is 20MHz, the reciprocal reduction step size is 1; if the total available bandwidth is 40MHz, the reciprocal reduction step size is 2; if the total available bandwidth is 60MHz, the reciprocal reduction step size is 3; If the total available bandwidth is 80 MHz, the reciprocal reduction step size is 4.

Continuing to refer to FIG. 1, in the specific implementation of step S14, the step size may be reduced according to the reciprocal number, and the updated reciprocal value can be obtained at each reciprocal time interval.

Further, reducing the step size according to the reciprocal of the reciprocal time interval, the step of obtaining the updated reciprocal value at each reciprocal time interval may include: at each reciprocal time interval, subtracting the reciprocal value obtained from the previous reciprocal time interval Decrease the step size at the reciprocal of the reciprocal time interval to obtain the updated reciprocal value.

Specifically, in each reciprocal time interval, when the state of the main channel (for example, 20 MHz) is idle, the reciprocal value is calculated and the current reciprocal reduction step is successively subtracted to obtain the updated reciprocal value.

It can be understood that, at each reciprocal time interval, the reciprocal reduction step is determined according to the current total available bandwidth.

In the specific implementation of step S15, when the updated reciprocal value is less than or equal to zero, and the control right of the TXOP is obtained, the TXOP is used to send the wireless data.

In an embodiment of the present invention, when the updated reciprocal value is less than or equal to zero, the control right of the TXOP is immediately obtained, and the TXOP is used to send the wireless data.

It is understandable that when the updated reciprocal value is zero and the control right of the TXOP is obtained, the TXOP can be used to send the wireless data according to an appropriate conventional manner.

It should be pointed out that, in the embodiment of the present invention, since the reciprocal reduction step size may be a non-integer or an integer greater than 1, it may happen that the updated reciprocal value is less than zero.

In a specific implementation manner of the embodiment of the present invention, if the available total bandwidth is 20 MHz, the reciprocal reduction step size is 0.5; if the available total bandwidth is 40 MHz, the reciprocal reduction step size is 1. ; It may appear that after a certain update, the reciprocal value is 0.5. In the next reciprocal time interval, if the state of the main channel is idle and the total available bandwidth is determined to be 40MHz, the reciprocal reduction step is 1 , Get -0.5, which is less than zero.

In the embodiment of the present invention, by determining the reciprocal reduction step size in the reciprocal time interval according to the available total bandwidth, and then reducing the step size according to the reciprocal of the reciprocal time interval, the updated value is obtained at each reciprocal time interval. Reciprocal value, so that there is an opportunity to use different reciprocals to reduce the step length. Compared with the prior art, the fixed reciprocal number is used to reduce the step length. With the solution of the embodiment of the present invention, there is an opportunity to increase a larger available total bandwidth (e.g. 80MHz) is the probability of being selected, so as to have the opportunity to use higher bandwidth transmission to improve the data transmission efficiency of the system.

Further, the wireless data transmission method may further include: if the updated reciprocal value is less than zero, recording the updated reciprocal value as zero.

In the embodiment of the present invention, by setting if the updated reciprocal value is less than zero, then the updated reciprocal value is recorded as 0, which can avoid the actual occurrence of a negative number, because in the prior art only the updated reciprocal value When the value is equal to zero and the control right of the TXOP is obtained, the wireless data is sent using the TXOP, and the solution of the embodiment of the present invention is adopted to improve the consistency and adaptability with the prior art.

It can be understood that, in specific implementation, the wireless data transmission method may be executed by the user equipment. Specifically, it may be executed by the baseband chip in the user equipment, or executed by a chip module containing the baseband chip in the user equipment.

Referring to FIG. 3, FIG. 3 is a schematic structural diagram of a wireless data transmission device in an embodiment of the present invention. The wireless data transmission apparatus may be used for STA, and may also include:

The original window determining module 31 is adapted to determine the original back-off window;

The reciprocal initial value determining module 32 is adapted to randomly determine the reciprocal initial value based on the original back-off window, and use the reciprocal initial value to perform the reciprocal;

The total available bandwidth determining module 33 is adapted to determine the total available bandwidth if the status of the main channel is idle at each countdown time interval, and determine the reciprocal reduction step in the countdown time interval according to the total available bandwidth;

The reciprocal value determining module 34 is adapted to reduce the step size according to the reciprocal of the reciprocal time interval, and obtain an updated reciprocal value at each reciprocal time interval;

The sending module 35 is adapted to use the TXOP to send the wireless data when the updated reciprocal value is less than or equal to zero and the control right of the TXOP is obtained.

For the principle, specific implementation, and beneficial effects of the wireless data transmission device, please refer to the foregoing and related descriptions of the wireless data transmission method shown in FIGS. 1 to 2, which will not be repeated here.

In specific implementation, the above-mentioned wireless data transmission device may correspond to a chip with data processing function in user equipment, such as a baseband chip; or correspond to a chip module including a chip with data processing function in user equipment, or correspond to a user equipment .

It should be pointed out that this technical solution can be applied to WiFi communication systems, as well as various new communication systems in the future, such as WiFi7.

The embodiment of the present invention also provides a storage medium on which computer instructions are stored, and the steps of the above-mentioned wireless data transmission method are executed when the computer instructions are executed. The storage medium may be a computer-readable storage medium, for example, it may include non-volatile memory (non-volatile) or non-transitory (non-transitory) memory, and may also include optical disks, mechanical hard drives, solid state hard drives, and the like.

Specifically, in the embodiment of the present invention, the processor may be a central processing unit (central processing unit, CPU for short), and the processor may also be other general-purpose processors or digital signal processors (DSP for short). ), application specific integrated circuit (ASIC for short), field programmable gate array (FPGA for short) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.

It should also be understood that the memory in the embodiments of the present application may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. Among them, the non-volatile memory can be read-only memory (read-only memory, ROM for short), programmable read-only memory (programmable ROM, PROM for short), erasable PROM (EPROM for short) , Electrically Erasable Programmable Read-Only Memory (EPROM, EEPROM for short) or flash memory. The volatile memory may be a random access memory (random access memory, RAM for short), which is used as an external cache. By way of exemplary but not restrictive description, many forms of random access memory (random access memory, referred to as RAM) are available, such as static random access memory (static RAM, referred to as SRAM), dynamic random access memory (DRAM), synchronous Dynamic random access memory (synchronous DRAM, referred to as SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, referred to as DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, referred to as ESDRAM), Synchronously connect dynamic random access memory (synchlink DRAM, referred to as SLDRAM) and direct memory bus random access memory (direct rambus RAM, referred to as DR RAM).

An embodiment of the present invention also provides an STA, including a memory and a processor, the memory stores computer instructions that can run on the processor, and the processor executes the above wireless data transmission when the computer instructions are executed. Method steps.

In specific implementation, with regard to the various modules/units contained in the various devices and products described in the above embodiments, they may be software modules/units, hardware modules/units, or part of software modules/units, and part of It is a hardware module/unit.

For example, for various devices and products that are applied to or integrated in a chip, the various modules/units contained therein can be implemented in the form of hardware such as circuits, or at least part of the modules/units can be implemented in the form of software programs. Runs on the integrated processor inside the chip, and the remaining (if any) part of the modules/units can be implemented by hardware methods such as circuits; for each device and product applied to or integrated in the chip module, the modules/units contained therein can be All are implemented by hardware such as circuits. Different modules/units can be located in the same component (such as a chip, circuit module, etc.) or different components of the chip module, or at least part of the modules/units can be implemented by software programs. The software program runs on the processor integrated inside the chip module, and the remaining (if any) part of the modules/units can be implemented by hardware methods such as circuits; for each device and product applied to or integrated in the terminal, the modules contained therein The modules/units can all be implemented by hardware such as circuits, and different modules/units can be located in the same component (for example, chip, circuit module, etc.) or different components in the terminal, or at least part of the modules/units can be implemented in the form of software programs Implementation, the software program runs on the processor integrated inside the terminal, and the remaining (if any) part of the modules/units can be implemented by hardware such as circuits.

Although the present invention is disclosed as above, the present invention is not limited to this. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention should be subject to the scope defined by the claims.

Claims

A wireless data transmission method is characterized in that it comprises the following steps:

Determine the original back-off window;

Based on the original back-off window, randomly determine the reciprocal initial value, and use the reciprocal initial value to perform the reciprocal;

In each reciprocal time interval, if the status of the main channel is idle, determine the total available bandwidth, and determine the reciprocal reduction step in the reciprocal time interval according to the total available bandwidth;

Decrease the step size according to the reciprocal, and obtain an updated reciprocal value at each reciprocal time interval;

When the updated reciprocal value is less than or equal to zero, and the control right of the TXOP is obtained, the wireless data is sent using the TXOP.
The wireless data transmission method according to claim 1, wherein the determining the reciprocal reduction step in the reciprocal time interval according to the available total bandwidth comprises:

The greater the total available bandwidth, the greater the reduction step size of the reciprocal in the reciprocal time interval.
The wireless data transmission method according to claim 2, wherein:

The reciprocal reduction step size has a linear relationship with the total available bandwidth.
The wireless data transmission method according to claim 3, wherein the reciprocal reduction step size and the available total bandwidth satisfy one or more of the following:

If the total available bandwidth is 20 MHz, the reciprocal reduction step size is 0.5;

If the total available bandwidth is 40 MHz, the reciprocal reduction step size is 1;

If the total available bandwidth is 60 MHz, the reciprocal reduction step size is 1.5;

If the total available bandwidth is 80 MHz, the reciprocal reduction step size is 2.
The wireless data transmission method according to claim 1, wherein:

The value of the reciprocal reduction step size is selected from an integer and a non-integer.
The wireless data transmission method according to claim 5, wherein:

The reciprocal reduction step size is selected from 0.1 to 5.
The wireless data transmission method according to claim 1, wherein reducing the step size according to the reciprocal of the reciprocal time interval, and obtaining the updated reciprocal value at each reciprocal time interval comprises:

At each reciprocal time interval, the reciprocal value obtained in the previous reciprocal time interval is subtracted by the reciprocal reduction step length in the reciprocal time interval to obtain the updated reciprocal value.
A wireless data transmission device is characterized in that it comprises:

The original window determination module is suitable for determining the original back-off window;

The reciprocal initial value determining module is adapted to randomly determine the reciprocal initial value based on the original backoff window, and use the reciprocal initial value to perform the reciprocal;

The total available bandwidth determining module is adapted to determine the total available bandwidth if the status of the main channel is idle at each countdown time interval, and determine the reciprocal reduction step in the countdown time interval according to the total available bandwidth;

The reciprocal value determination module is adapted to reduce the step size according to the reciprocal of the reciprocal time interval, and obtain an updated reciprocal value at each reciprocal time interval;

The sending module is adapted to use the TXOP to send the wireless data when the updated reciprocal value is less than or equal to zero and the control right of the TXOP is obtained.
A storage medium having computer instructions stored thereon, wherein the computer instructions execute the steps of the wireless data transmission method according to any one of claims 1 to 7 when the computer instructions are run.
An STA, comprising a memory and a processor, and computer instructions that can run on the processor are stored on the memory, wherein the processor executes any one of claims 1 to 7 when the computer instructions are executed. The steps of the wireless data transmission method described in item.