WO2021129330A1

WO2021129330A1 - Method and device for transmitting wireless data, storage medium, and terminal

Info

Publication number: WO2021129330A1
Application number: PCT/CN2020/133245
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: 2019-12-23
Filing date: 2020-12-02
Publication date: 2021-07-01
Also published as: CN111132368A; CN111132368B

Abstract

A method and device for transmitting wireless data, a storage medium, and a terminal. The method comprises: obtaining, by means of TXOP competition, control rights for a TXOP; comparing a first available total bandwidth to a first reference total bandwidth; and at least according to the comparison result for the first available total bandwidth and the first reference bandwidth, determining whether to restart TXOP competition. The first available total bandwidth is the sum of the available bandwidths of one or more links. In the solution of the present invention, comparison can be used such that a high bandwidth is used for transmission only when the available total bandwidth is relatively large, and thus the data transmission efficiency of a system can be effectively improved.

Description

Wireless data transmission method and device, storage medium and terminal

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office, the application number is 201911337271.5, and the invention title is "wireless data transmission method and device, storage medium, terminal" on December 23, 2019, 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 terminal.

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, discussions on multi-link systems began 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, because the bandwidth used by the sender and receiver are often different, there are multiple combinations of bandwidths, 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 transmission efficiency Lower. For example, Primary20, Primary40, Primary80 or other bandwidths can be used respectively. Among them, when the state of the main 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.

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, since there may be one or more secondary links, and both primary and secondary links can use multiple bandwidths, the determined channel bandwidth is restricted by multiple conditions, which may further Decrease.

There is an urgent need for a wireless data transmission method that can support the use of higher bandwidth transmission to improve the data transmission efficiency of the system after obtaining the control right of the TXOP.

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 terminal. Through comparison, higher bandwidth transmission can be used only when the total available bandwidth is larger, so that the data of the system can be effectively improved. Transmission efficiency.

In order to solve the above technical problems, an embodiment of the present invention provides a wireless data transmission method, which includes the following steps: obtaining the control right of TXOP via TXOP competition; comparing the first available total bandwidth with the first reference total bandwidth; at least according to said A comparison result of the first total available bandwidth and the first reference total bandwidth determines whether to restart TXOP contention; where the first total available bandwidth is the sum of the available bandwidths of one or more links.

Optionally, obtaining the control right of TXOP through TXOP competition includes: determining the original reciprocal initial value; whenever the state of the main 20MHz channel is idle, calculating the original reciprocal initial value minus one to obtain the updated reciprocal value; When the updated reciprocal value is zero, it is determined to obtain the control right of the TXOP.

Optionally, the wireless data transmission method further includes: determining a random reciprocal initial value when the TXOP competition is restarted; wherein the backoff window of the random reciprocal initial value is less than or equal to the backoff window of the original reciprocal initial value.

Optionally, the first reference total bandwidth is a preset fixed bandwidth; or, the first reference total bandwidth is determined according to an average value of the first available total bandwidth within a preset historical time period.

Optionally, the first reference total bandwidth is the product of the average value of the first available total bandwidth within a preset historical time period and a preset weight value; wherein, the preset weight value is selected from 0.2-5.

Optionally, determining whether to restart TXOP contention at least according to a comparison result of the first available total bandwidth and the first reference total bandwidth includes: if the first available total bandwidth is less than the first reference total bandwidth, Then within the preset time period, continue to compare the first available total bandwidth with the first reference total bandwidth; if the result of any one comparison is that the first available total bandwidth is greater than or equal to the first reference total bandwidth, it is determined whether Use the TXOP to transmit data; if the result of each comparison is that the first available total bandwidth is continuously smaller than the first reference total bandwidth, it is determined to restart the TXOP competition when the preset time period ends.

Optionally, the wireless data transmission method further includes: if the first available total bandwidth is greater than or equal to the first reference total bandwidth, determining whether to use the TXOP to transmit data.

Optionally, the method is used for multi-link data transmission; the determining whether to use the TXOP to transmit data includes: sending dynamic bandwidth signaling to the corresponding link of the receiving end through each link, so that the receiving end Determine the available bandwidth of each link for data transmission; confirm the available bandwidth of the current link for data transmission from the receiving end through each link; sum the confirmed available bandwidth of each link, To obtain the second total available bandwidth; if the second total available bandwidth is greater than or equal to the second reference total bandwidth, determine to use the TXOP to transmit data; wherein, the second reference total bandwidth is less than or equal to the first reference total bandwidth bandwidth.

Optionally, the method is used for single link data transmission; the determining whether to use the TXOP to transmit data includes: sending dynamic bandwidth signaling to the receiving end, so that the receiving end can determine the availability of the current link for data transmission Bandwidth; confirm from the receiving end the available bandwidth of the current link for data transmission; if the available bandwidth of the current link for data transmission is greater than or equal to the second reference total bandwidth, determine to use the TXOP to transmit data ; Wherein, the second reference total bandwidth is less than or equal to the first reference total bandwidth.

The wireless data transmission method further includes: if it is determined that the TXOP competition is not to be restarted, the confirmation is continued for a preset confirmation period, and the network allocation vector within the preset confirmation period is set.

In order to solve the above technical problems, an embodiment of the present invention provides a wireless data transmission device, including: a control right obtaining module, adapted to obtain the control right of TXOP via TXOP competition; a comparison module, adapted to compare the first available total bandwidth with the first The comparison is made with reference to the total bandwidth; the restart module is adapted to restart the TXOP contention at least according to the comparison result of the first available total bandwidth and the first reference total bandwidth; wherein, the first available total bandwidth is one piece or The sum of the available bandwidth of multiple links.

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 problems, an embodiment of the present invention provides a terminal, including a memory and a processor, the memory stores computer instructions that can run on the processor, and the processor executes the computer instructions when the computer instructions are run. 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 control right of TXOP is obtained through TXOP competition; the first available total bandwidth is compared with the first reference total bandwidth; at least according to the comparison between the first available total bandwidth and the first reference total bandwidth As a result, it is determined whether to restart the TXOP contention; wherein the first total available bandwidth is the sum of the available bandwidths of one or more links. Using the above solution, by setting the first reference total bandwidth, and comparing it with the total available bandwidth of the transmitting end, in the case where the available total bandwidth is small, the current TXOP transmission is abandoned, but at least according to the first available total bandwidth Compared with the first reference total bandwidth, there is a chance to restart the TXOP competition. Compared with the prior art, even if the current available total bandwidth of the sender is very small, the TXOP will be used to transmit data, resulting in system data The transmission efficiency is low, and the solution of the embodiment of the present invention can be compared to use higher bandwidth transmission only when the total available bandwidth is larger, thereby effectively improving the data transmission efficiency of the system.

Further, when it is determined that the available total bandwidth is small, in addition to the condition that the first available total bandwidth is less than the first reference total bandwidth, it is also based on the comparison between the first available total bandwidth and the first reference total bandwidth continuously. As a result, it is determined whether to restart the TXOP competition. Compared with the situation where the TXOP competition is restarted as long as the first available total bandwidth is less than the first reference total bandwidth, the solution of the embodiment of the present invention can provide some more comparison times to Improve the use of a larger bandwidth to achieve the purpose of transmission after obtaining control, and further improve the data transmission efficiency of the system on the basis of using a larger bandwidth.

Further, when the wireless data transmission method is used for multi-link data transmission, when the first available total bandwidth is greater than or equal to the first reference total bandwidth, dynamic bandwidth signaling may be sent to the corresponding link of the receiving end to Determine the available bandwidth after considering the channel state of the receiving end and the second total available bandwidth, and then determine to use the TXOP to transmit data when the second total available bandwidth is greater than or equal to the second reference total bandwidth, so that the receiving end can be further considered. Ability to avoid receiving failure due to the difference between the channel interference situation at the receiving end and the sending end, which effectively guarantees the data transmission efficiency of the system.

Further, when the wireless data transmission method is used for single link data transmission, when the first available total bandwidth is greater than or equal to the first reference total bandwidth, dynamic bandwidth signaling may be sent to the receiving end to determine the receiving end The available bandwidth, and when the total available bandwidth after considering the channel status of the receiving end is greater than or equal to the reference bandwidth, the TXOP is determined to transmit data, so that the receiving ability of the receiving end can be further considered, and the channel interference of the receiving end can be avoided. The difference causes the reception to fail, which effectively guarantees the data transmission efficiency 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;

FIG. 2 is a flowchart of a specific implementation of step S13 in FIG. 1;

FIG. 3 is a flowchart of a specific implementation of step S22 in FIG. 2;

FIG. 4 is a flowchart of another specific implementation manner of step S22 in FIG. 2;

Fig. 5 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 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, since there may be one or more secondary links, and both primary and secondary links can use multiple bandwidths, the determined channel bandwidth is restricted by multiple conditions, which may further Decrease.

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 include step S11 to step S13:

Step S11: Obtain the control right of TXOP through TXOP competition;

Step S12: Compare the first available total bandwidth with the first reference total bandwidth;

Step S13: Determine whether to restart TXOP contention at least according to the comparison result of the first total available bandwidth and the first reference total bandwidth;

Wherein, the first total available bandwidth is the sum of available bandwidths of one or more links.

In the specific implementation of step S11, the step of obtaining the control right of the TXOP via the TXOP competition can be implemented in a conventional manner.

In a specific implementation of the embodiment of the present invention, the step of obtaining the control right of TXOP through TXOP competition may include: randomly determining the initial value of the reciprocal from the initial backoff window; each reciprocal time interval (backoff interval) , slot time), when the state of the main 20MHz channel is idle, calculate the original reciprocal initial value minus one to obtain the updated reciprocal value; when the updated reciprocal value is zero, determine to obtain the control right of TXOP .

In the embodiment of the present invention, the back-off to zero step is set, that is, time is performed every time the state of the main 20MHz channel is idle, and the time unit of the time duration (for example, slot time) After the number of) reaches the preset number of times, it is determined to obtain the control right of the TXOP, and the control right of the TXOP can be obtained through the TXOP competition.

Further, the wireless data transmission method further includes the step of determining the initial value of the random reciprocal when the TXOP competition is restarted.

Wherein, the backoff window of the random reciprocal initial value is less than or equal to the backoff window of the original reciprocal initial value.

In the embodiment of the present invention, by setting the backoff window used when restarting the TXOP competition to be smaller, the waiting time for acquiring the control right of the TXOP again can be reduced, making it easier for the transmitter to obtain the control right again after giving up the control right of the TXOP. Effectively improve the data transmission efficiency of the system.

In the specific implementation of step S12, the first available total bandwidth is compared with the first reference total bandwidth.

Wherein, the first available total bandwidth (Available Total Bandwidth, ATBW) is used to indicate the available total bandwidth that can be used when the transmitting end determines to use the TXOP to send data. 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.

The first reference total bandwidth (Reference Total Bandwidth, RTBW) is used to indicate a value for comparison, so that the sending end determines at least according to the comparison result of the first available total bandwidth and the first reference total bandwidth Whether to restart TXOP competition. Specifically, the first reference total bandwidth may be a preset static value, or may be a dynamic value determined according to historical data.

It should be pointed out that the first reference total bandwidth can be determined in different ways. In a specific implementation manner, the first reference total bandwidth may be regarded as the sum of the reference bandwidths of one or more links; in another specific implementation manner, the first reference total bandwidth may also be regarded as The average value of the first total available bandwidth in the preset historical time period.

In another specific implementation manner of the embodiment of the present invention, the reference bandwidth of each link is not defined, but the first reference total bandwidth is directly set or obtained.

Further, the average total bandwidth may be the average value of the first available total bandwidth of the link within the preset historical time period, and the first reference total bandwidth is the average value of the first available total bandwidth within the preset historical time period The product of the preset weight value, where the preset weight value is used as the threshold adjustment value, and the adjustable range is 0.2-5. The commonly used setting value can be slightly larger or slightly less than 1, for example, set to 0.9-1.1.

It should be pointed out that, in a specific implementation manner of the embodiment of the present invention, the first reference total bandwidth is determined according to the reference bandwidth of each link, and the reference bandwidth of each link may be a preset fixed Bandwidth, the reference bandwidth of different links can be the same. In the embodiment of the present invention, setting the reference bandwidth of different links to be the same is helpful for standardized management and use.

In still another specific implementation manner of the embodiment of the present invention, the reference bandwidth of each link may be the average value of the available bandwidth of the link in the preset historical time period.

In the embodiment of the present invention, by setting the reference bandwidth of each link, it can be the average value of the available bandwidth of the link in the preset historical time period, and the reference bandwidth of each link can be dynamically determined, and then the reference bandwidth of each link can be dynamically determined. The first reference total bandwidth promotes the setting of the first reference total bandwidth to be more in line with the actual situation of the sending end, and the accuracy is improved.

In the specific implementation of step S13, the transmitting end determines whether to restart the TXOP contention at least according to the comparison result of the first available total bandwidth and the first reference total bandwidth.

Further, if the first available total bandwidth is greater than or equal to the first reference total bandwidth, it is determined whether to use the TXOP to transmit data.

In the embodiment of the present invention, when the first available total bandwidth is greater than or equal to the first reference total bandwidth, it can be determined that the sending condition of the sender is satisfied, and the data to be transmitted can be sent directly or the next Confirm the situation at the receiving end.

Further, the wireless data transmission method further includes: if it is determined not to restart the TXOP competition, continuously confirming for a preset confirmation period, and setting a network allocation vector within the preset confirmation period.

In the embodiment of the present invention, when the first available total bandwidth is less than the first reference total bandwidth, it can be judged that the sending condition of the sending end is not satisfied, and the step of TXOP contention can be restarted, or if it is determined not to When the TXOP competition is restarted, the confirmation is continued for a preset period of time. Further, if the confirmation is to be continued within a preset time period, a Network Allocation Vector (NAV) within the preset time period should be set up to prevent other devices from continuing to count down or send within the preset time period. It should be pointed out that the method for establishing the network allocation vector can be established by using an existing conventional solution, which is not limited in the embodiment of the present invention.

Referring to FIG. 2, FIG. 2 is a flowchart of a specific implementation of step S13 in FIG. 1. The step of determining whether to restart TXOP contention at least according to the comparison result of the first available total bandwidth and the first reference total bandwidth may include step S21 to step S23, and each step is described below.

In step S21, if the first available total bandwidth is less than the first reference total bandwidth, the first available total bandwidth is continuously compared with the first reference total bandwidth within a preset time period.

In step S22, if the result of any one comparison is that the first available total bandwidth is greater than or equal to the first reference total bandwidth, it is determined whether to use the TXOP to transmit data.

In the embodiment of the present invention, when the result of any one comparison indicates that the first available total bandwidth is greater than or equal to the first reference total bandwidth, it can be determined that the sending conditions of the sender side have been met, and the data to be transmitted can be processed directly. Send or confirm the situation on the receiving end next.

In step S23, if the result of each comparison is that the first available total bandwidth is continuously smaller than the first reference total bandwidth, it is determined to restart the TXOP contention at the end of the preset time period.

In the embodiment of the present invention, when it is determined that the total available bandwidth is small, in addition to the condition that the first available total bandwidth is less than the first reference total bandwidth, it is also based on the continuous comparison between the first available total bandwidth and the first reference total bandwidth. The comparison result of the bandwidth comparison determines whether to restart the TXOP competition. Compared with the situation where the TXOP competition is restarted as long as the first available total bandwidth is less than the first reference total bandwidth, the solution of the embodiment of the present invention can provide more Some comparison times are used to increase the use of a larger bandwidth to achieve the purpose of transmission after obtaining the control right, and to further improve the data transmission efficiency of the system on the basis of using a larger bandwidth.

In a specific implementation, when it is determined that the sending conditions of the sending end are satisfied, the conditions of the receiving end can be confirmed for the multi-link data transmission and the single-link data transmission respectively.

Referring to Fig. 3, Fig. 3 is a flowchart of a specific implementation of step S22 in Fig. 2. The method shown in FIG. 3 can be used for multi-link data transmission.

The step of determining whether to use the TXOP to transmit data may include step S31 to step S34, and each step is described below.

In step S31, the dynamic bandwidth signaling is sent to the corresponding link of the receiving end through each link, so that the receiving end can determine the available bandwidth of each link for data transmission.

Wherein, the dynamic bandwidth signaling may use request to send-clear to send (RTS-CTS) dynamic bandwidth signaling. Among them, CTS can be regarded as a response to RTS.

Further, if the network allocation vector (Network Allocation Vector, NAV) is set by using the dynamic BW signaling of RTS-CTS, the NAV can be released before the TXOP is restarted, so that when the TXOP is not used, the Release NAV to ensure the data transmission efficiency of the system.

In step S32, the available bandwidth of the current link for data transmission is confirmed from the receiving end through each link.

In step S33, the confirmed available bandwidth of each link is summed to obtain the second total available bandwidth.

In a specific implementation, the second total available bandwidth may be used to indicate the total available bandwidth that can be used when the TXOP is used to send and receive data, and may be the sum of the confirmed available bandwidths of each link. Wherein, the second total available bandwidth may be confirmed by the sending end.

In step S34, if the second available total bandwidth is greater than or equal to the first reference total bandwidth of the receiving end, it is determined that the TXOP is used to transmit data.

In the embodiment of the present invention, in the case that the wireless data transmission method is used for multi-link data transmission, when the first available total bandwidth is greater than or equal to the first reference total bandwidth, it may send to the corresponding link of the receiving end Dynamic bandwidth signaling determines the available bandwidth and the second available total bandwidth considering the channel state of the receiving end, and then determines to use the TXOP to transmit data when the second available total bandwidth is greater than or equal to the second reference total bandwidth, so that further Taking into account the interference situation of the receiving end, the channel interference situation of the receiving end is different from that of the sending end and the reception failure is avoided, which effectively guarantees the data transmission efficiency of the system.

It should be pointed out that the second reference total bandwidth is less than or equal to the first reference total bandwidth.

Taking the dynamic bandwidth signaling sent by the sending end indicating that the available bandwidth of one of the links is 80MHz as an example, if the available bandwidth of the receiving end on the current link is 40MHz, the receiving end determines that the available bandwidth for data transmission is two The smaller value in the data is 40MHz.

By analogy, if the sending end indicates 40MHz and the available bandwidth of the receiving end is 80MHz, the receiving end determines that the available bandwidth for data transmission is the smaller of the two data, which is 40MHz; if the sending end indicates 40MHz, If the available bandwidth of the receiving end is 0, the receiving end judges that the available bandwidth for transmitting data is the smaller value of the two data, which is 0; if the sending end indicates 40MHz, and the available bandwidth of the receiving end is 40MHz, the receiving end The end judges that the available bandwidth for data transmission is 40MHz.

Referring to Fig. 4, Fig. 4 is a flowchart of another specific implementation of step S22 in Fig. 2. The method shown in FIG. 4 can be used for single link data transmission.

The step of determining whether to use the TXOP to transmit data may include step S41 to step S43, and each step will be described below.

In step S41, the dynamic bandwidth signaling is sent to the receiving end, so that the receiving end can determine the available bandwidth of the current link for data transmission.

In step S42, the available bandwidth of the current link for data transmission is confirmed from the receiving end.

In step S43, if the available bandwidth of the current link for data transmission is greater than or equal to the second reference total bandwidth, it is determined to use the TXOP to transmit data;

Wherein, the second reference total bandwidth is less than or equal to the first reference total bandwidth.

In a specific implementation, the second total available bandwidth can be used to indicate the available bandwidth that can be used when the TXOP is used to send and receive data, for example, it can be the confirmed available bandwidth of the single link.

In the embodiment of the present invention, when the wireless data transmission method is used for single-link data transmission, when the first available total bandwidth is greater than or equal to the first reference total bandwidth, a dynamic bandwidth signal may be sent to the receiving end. Let us determine the available bandwidth of the receiving end, and then when the total available bandwidth after considering the channel state of the receiving end is greater than or equal to the second reference total bandwidth, the TXOP can be used to transmit data, so that the receiving capability of the receiving end can be further considered to avoid causes The channel interference condition of the receiving end is different from that of the sending end, which leads to reception failure, which effectively guarantees the data transmission efficiency of the system.

In the embodiment of the present invention, by setting the first reference total bandwidth, and comparing it with the available total bandwidth of the transmitting end, in the case that the available total bandwidth is small, the current TXOP transmission is abandoned, but at least according to the first The comparison result of the available total bandwidth and the first reference total bandwidth has a chance to restart the TXOP competition. Compared with the prior art, even if the current available total bandwidth of the transmitting end is very small, the TXOP will be used to transmit data, resulting in The data transmission efficiency of the system is relatively low. Using the scheme of the embodiment of the present invention, it can be compared, and higher bandwidth transmission is used only when the total available bandwidth is relatively large, so that the data transmission efficiency of the system can be effectively improved.

It should be pointed out that the second reference total bandwidth is less than or equal to the first reference total bandwidth. For details, please refer to the description in FIG. 3, which will not be repeated here.

Referring to FIG. 5, FIG. 5 is a schematic structural diagram of a wireless data transmission device in an embodiment of the present invention. The wireless data transmission device may include:

The control right obtaining module 51 is adapted to obtain the control right of TXOP through TXOP competition;

The comparison module 52 is adapted to compare the first available total bandwidth with the first reference total bandwidth;

The restart module 53 is adapted to restart the TXOP contention at least according to the comparison result of the first total available bandwidth and the first reference total bandwidth;

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 4, which will not be repeated here.

It should be pointed out that this technical solution can be applied to 5G (5Generation) communication systems, 4G and 3G communication systems, and various new communication systems in the future, such as 6G and 7G.

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 this 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), ready-made programmable gate array (field programmable gate array, FPGA) 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 may 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, RAM for short) are available, such as static random access memory (static RAM, SRAM for short), 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, SLDRAM) and direct memory bus random access memory (direct rambus RAM, DR RAM for short).

An embodiment of the present invention also provides a terminal, including a memory and a processor, the memory stores computer instructions that can run on the processor, and the processor executes the above-mentioned wireless data transmission when the computer instructions are executed. Method steps. The terminal may be a sending end, and may also include, but is not limited to, terminal devices such as mobile phones, computers, and tablet computers.

Specifically, the terminal in the embodiment of the present application may refer to various forms of user equipment (user equipment, UE for short), access terminal, user unit, user station, mobile station, mobile station (mobile station, MS), remote Station, remote terminal, mobile equipment, user terminal, terminal equipment, wireless communication equipment, user agent, or user device. The terminal device can also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), Handheld devices with wireless communication functions, computing devices, or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, terminal devices in the future 5G network, or future evolution of the public land mobile communication network (Public Land Mobile Network, referred to as The terminal equipment in the PLMN) is not limited in this embodiment of the present application.

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:

Acquire control of TXOP through TXOP competition;

Comparing the first available total bandwidth with the first reference total bandwidth;

At least according to a comparison result of the first total available bandwidth and the first reference total bandwidth, determining whether to restart TXOP contention;

Wherein, the first total available bandwidth is the sum of available bandwidths of one or more links.
The wireless data transmission method according to claim 1, wherein obtaining the control right of TXOP through TXOP competition comprises:

Determine the initial value of the original reciprocal;

Whenever the state of the main 20MHz channel is idle, calculate the original reciprocal initial value minus one to obtain the updated reciprocal value;

When the updated reciprocal value is zero, it is determined to obtain the control right of the TXOP.
The wireless data transmission method according to claim 2, further comprising:

Determine the initial value of the random reciprocal when restarting the TXOP competition;

Wherein, the backoff window of the random reciprocal initial value is less than or equal to the backoff window of the original reciprocal initial value.
The wireless data transmission method according to claim 1, wherein:

The first reference total bandwidth is a preset fixed bandwidth;

or,

The first reference total bandwidth is determined according to the average value of the first available total bandwidth within a preset historical time period.
The wireless data transmission method according to claim 1, wherein the first reference total bandwidth is the product of the average value of the first available total bandwidth in a preset history period and a preset weight value;

Wherein, the preset weight value is selected from 0.2-5.
The wireless data transmission method according to claim 1, wherein determining whether to restart TXOP contention at least according to a comparison result of the first total available bandwidth and the first reference total bandwidth comprises:

If the first available total bandwidth is less than the first reference total bandwidth, continue to compare the first available total bandwidth with the first reference total bandwidth within a preset period of time;

If the result of any comparison is that the first available total bandwidth is greater than or equal to the first reference total bandwidth, determining whether to use the TXOP to transmit data;

If the result of each comparison is that the first available total bandwidth is continuously smaller than the first reference total bandwidth, it is determined to restart the TXOP competition when the preset time period ends.
The wireless data transmission method according to claim 1, further comprising:

If the first available total bandwidth is greater than or equal to the first reference total bandwidth, it is determined whether to use the TXOP to transmit data.
The wireless data transmission method according to claim 6 or 7, wherein the method is used for multi-link data transmission;

The determining whether to use the TXOP to transmit data includes:

Send dynamic bandwidth signaling to the corresponding link of the receiving end through each link, so that the receiving end can determine the available bandwidth of each link for data transmission;

Confirm the available bandwidth of the current link for data transmission from the receiving end through each link;

Sum the confirmed available bandwidth of each link to obtain the second total available bandwidth;

If the second available total bandwidth is greater than or equal to the second reference total bandwidth, determining to use the TXOP to transmit data;

Wherein, the second reference total bandwidth is less than or equal to the first reference total bandwidth.
The wireless data transmission method according to claim 6 or 7, wherein the method is used for single link data transmission;

The determining whether to use the TXOP to transmit data includes:

Send dynamic bandwidth signaling to the receiving end so that the receiving end can determine the available bandwidth of the current link for data transmission;

Confirm from the receiving end the available bandwidth of the current link for data transmission;

If the available bandwidth of the current link for data transmission is greater than or equal to the second reference total bandwidth, determining to use the TXOP to transmit data;

Wherein, the second reference total bandwidth is less than or equal to the first reference total bandwidth.
The wireless data transmission method according to claim 1, further comprising:

If it is determined not to restart the TXOP competition, the confirmation is continued within the preset confirmation period, and the network allocation vector within the preset confirmation period is set.
A wireless data transmission device is characterized in that it comprises:

The control right obtaining module is suitable for obtaining the control right of TXOP through TXOP competition;

The comparison module is adapted to compare the first available total bandwidth with the first reference total bandwidth;

The restart module is adapted to restart the TXOP competition at least according to the comparison result of the first total available bandwidth and the first reference total bandwidth;

Wherein, the first total available bandwidth is the sum of available bandwidths of one or more links.
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 10 when the computer instructions are run.
A terminal 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 10 when the computer instructions are executed. The steps of the wireless data transmission method described in item.