CN111132368B - Wireless data transmission method and device, storage medium and terminal - Google Patents
Wireless data transmission method and device, storage medium and terminal Download PDFInfo
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- CN111132368B CN111132368B CN201911337271.5A CN201911337271A CN111132368B CN 111132368 B CN111132368 B CN 111132368B CN 201911337271 A CN201911337271 A CN 201911337271A CN 111132368 B CN111132368 B CN 111132368B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access, e.g. scheduled or random access
- H04W74/08—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
- H04W74/0833—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a random access procedure
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access, e.g. scheduled or random access
- H04W74/08—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
- H04W74/0833—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a random access procedure
- H04W74/0841—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a random access procedure with collision treatment
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
A wireless data transmission method and device, a storage medium and a terminal are provided, and the method comprises the following steps: obtaining control of the TXOP via the TXOP contention; comparing the first available total bandwidth with a first reference total bandwidth; determining whether to restart TXOP competition according to at least a comparison result of the first available total bandwidth and the first reference total bandwidth; wherein the first total available bandwidth is a sum of available bandwidths of one or more links. The scheme of the invention can adopt higher bandwidth transmission only when the available total bandwidth is larger through comparison, thereby effectively improving the data transmission efficiency of the system.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a wireless data transmission method and apparatus, a storage medium, and a terminal.
Background
In a conventional Institute of Electrical and Electronics Engineers (IEEE) 802.11 protocol, only a single link system is defined, such as a Wireless Local Area Network (WLAN) protocol. As technology evolves, a multilink system begins to be discussed in 802.11 be.
In the wireless data Transmission technology, Transmission Opportunity (TXOP) contention is an important content of wireless channel access, and is composed of an initial time and a maximum duration (TXOP limit). Specifically, the TXOP may be obtained through contention or allocation, and a station that obtains the TXOP may continuously use the channel to transmit multiple data frames within the TXOP limit time without re-contending for the channel.
In a single link system, because the bandwidths used by the sending end and the receiving end are different, there are various bandwidth combinations, and therefore, in order to meet the requirement of the smaller bandwidth party, the smaller bandwidth is often adopted to transmit data, which results in lower transmission efficiency. For example, Primary20, Primary40, Primary80, or other bandwidths may be employed, respectively. Wherein, when the status of the Primary20 MHz channel (e.g., channel 1) is idle and the status of the other non-Primary channels is busy, "Primary 20" can be used only, and the available bandwidth is 20 MHz. When the status of the Primary40 MHz channel (e.g., channels 1, 2) is idle and the status of the remaining non-Primary channels is busy, only "Primary 40" can be used, and the available bandwidth is 40 MHz. When the status of the Primary80 MHz channels (e.g., channels 1, 2, 3, and 4) is idle and the status of the remaining non-Primary channels is busy, only "Primary 80" can be used, where the available bandwidth is 80 MHz.
This problem is more serious in the case of a synchronous multilink system, and the problem of low transmission efficiency is more likely to occur. In particular, in a synchronous multilink system, since there may be one or more secondary links, and the primary/secondary links may each use a variety of bandwidths, the determined channel bandwidth is limited by a variety of conditions, which may be further reduced.
There is a 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 TXOP.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a wireless data transmission method and apparatus, a storage medium, and a terminal, which can effectively improve the data transmission efficiency of a system by comparing that a higher bandwidth is adopted only when the available total bandwidth is larger.
To solve the above technical problem, an embodiment of the present invention provides a wireless data transmission method, including the following steps: obtaining control of the TXOP via the TXOP contention; comparing the first available total bandwidth with a first reference total bandwidth; determining whether to restart TXOP competition according to at least a comparison result of the first available total bandwidth and the first reference total bandwidth; wherein the first total available bandwidth is a sum of available bandwidths of one or more links.
Optionally, obtaining the control right of the TXOP via the TXOP contention comprises: determining an original reciprocal initial value; every time the state of the main 20MHz channel is idle, calculating the original reciprocal initial value minus one to obtain an updated reciprocal value; and when the updated reciprocal value is zero, determining 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; and 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; alternatively, 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 a product of an average value of first available total bandwidths in a preset historical duration and a preset weight value; wherein the preset weight value is selected from: 0.2 to 5.
Optionally, determining whether to restart TXOP contention according to at least a comparison result of the first available total bandwidth and the first reference total bandwidth includes: if the first available total bandwidth is smaller than the first reference total bandwidth, continuously comparing the first available total bandwidth with the first reference total bandwidth within a preset time length; if the first available total bandwidth is larger than or equal to the first reference total bandwidth as a result of the comparison at any time, determining whether to adopt the TXOP to transmit data; and if the comparison result of each time is that the first available total bandwidth is continuously smaller than the first reference total bandwidth, determining to restart the TXOP competition when the preset time length is over.
Optionally, the wireless data transmission method further includes: determining whether to transmit data using the TXOP if the first available total bandwidth is greater than or equal to the first reference total bandwidth.
Optionally, the method is used for multilink data transmission; the determining whether to transmit data using the TXOP comprises: respectively sending dynamic bandwidth signaling to a corresponding link of a receiving end through each link, so that the receiving end judges the available bandwidth of each link for transmitting data; respectively confirming available bandwidth used for transmitting data of the current link from the receiving end through each link; summing the acknowledgment available bandwidth for each of said links to obtain a second total available bandwidth; determining to transmit data using the TXOP if the second available total bandwidth is greater than or equal to a second reference total bandwidth; wherein the second reference total bandwidth is less than or equal to the first reference total bandwidth.
Optionally, the method is used for single link data transmission; the determining whether to transmit data using the TXOP comprises: sending dynamic bandwidth signaling to a receiving end so that the receiving end judges the available bandwidth of the current link for transmitting data; confirming available bandwidth of the current link for transmitting data from the receiving end; if the available bandwidth of the current link for transmitting data is greater than or equal to a second reference total bandwidth, determining to transmit data by adopting the TXOP; wherein the second reference total bandwidth is less than or equal to the first reference total bandwidth.
The wireless data transmission method further comprises: and if the TXOP competition is determined not to be restarted, continuously confirming in a preset confirmation duration, and setting a network allocation vector in the preset confirmation duration.
To solve the above technical problem, an embodiment of the present invention provides a wireless data transmission device, including: a control right obtaining module adapted to obtain a control right of the TXOP via the TXOP contention; a comparison module adapted to compare the first available total bandwidth with a first reference total bandwidth; a restart module adapted to restart TXOP contention according to at least a comparison result of the first available total bandwidth and the first reference total bandwidth; wherein the first total available bandwidth is a sum of available bandwidths of one or more links.
To solve the above technical problem, an embodiment of the present invention provides a storage medium having stored thereon computer instructions, which when executed perform the steps of the above wireless data transmission method.
In order to solve the above technical problem, an embodiment of the present invention provides a terminal, including a memory and a processor, where the memory stores computer instructions capable of being executed on the processor, and the processor executes the steps of the wireless data transmission method when executing the computer instructions.
Compared with the prior art, the technical scheme of the embodiment of the invention has the following beneficial effects:
in the embodiment of the invention, the control right of TXOP is obtained through TXOP competition; comparing the first available total bandwidth with a first reference total bandwidth; determining whether to restart TXOP competition according to at least a comparison result of the first available total bandwidth and the first reference total bandwidth; wherein the first total available bandwidth is a sum of available bandwidths of one or more links. By adopting the scheme, the first reference total bandwidth is set, the available total bandwidth of the sending end is compared with the first reference total bandwidth, the current TXOP transmission is abandoned under the condition that the available total bandwidth is smaller, and the TXOP competition is restarted at least according to the comparison result of the first available total bandwidth and the first reference total bandwidth.
Further, when it is determined that the available total bandwidth is smaller, whether to restart the TXOP contention is determined according to a comparison result of continuously comparing the first available total bandwidth with the first reference total bandwidth, in addition to a condition that the first available total bandwidth is smaller than the first reference total bandwidth, and compared with a case that the TXOP contention is restarted as long as the first available total bandwidth is smaller than the first reference total bandwidth, by adopting the scheme of the embodiment of the present invention, a number of comparison times can be provided more, so as to improve a purpose of implementing transmission by using a larger bandwidth after obtaining the control right, and further improve data transmission efficiency of the system on the basis of using the larger bandwidth.
Further, when the wireless data transmission method is used for multilink data transmission, when the first available total bandwidth is greater than or equal to the first reference total bandwidth, a dynamic bandwidth signaling may be sent to a corresponding link of the receiving end to determine an available bandwidth and a second available total bandwidth after considering a channel state of the receiving end, and then when the second available total bandwidth is greater than or equal to the second reference total bandwidth, it is determined to transmit data using the TXOP, so that the receiving capability of the receiving end may be further considered, thereby avoiding a reception failure caused by a channel interference condition of the receiving end being different from that of the transmitting end, and effectively ensuring the data transmission efficiency of the system.
Further, when the wireless data transmission method is used for single-link data transmission, a dynamic bandwidth signaling may be sent to the receiving end to determine the available bandwidth of the receiving end when the first available total bandwidth is greater than or equal to the first reference total bandwidth, and then it is determined to transmit data using the TXOP only when the available total bandwidth after considering the channel state of the receiving end is greater than or equal to the reference bandwidth, so that the receiving capability of the receiving end may be further considered, thereby avoiding reception failure caused by a difference between the channel interference condition of the receiving end and the transmitting end, and effectively ensuring the data transmission efficiency of the system.
Drawings
Fig. 1 is a flow chart of a wireless data transmission method according to an embodiment of the present invention;
FIG. 2 is a flowchart of one embodiment of step S13 of FIG. 1;
FIG. 3 is a flowchart of one embodiment of step S22 of FIG. 2;
FIG. 4 is a flowchart of another embodiment of step S22 of FIG. 2;
fig. 5 is a schematic structural diagram of a wireless data transmission device according to an embodiment of the present invention.
Detailed Description
As described above, in the single link system of the conventional wireless data transmission technology, in an interference environment, the available bandwidth of the transmitting end or the receiving end is often limited due to the existence of interference, and the available bandwidth between the transmitting end and the receiving end may also be different, so that there are various bandwidth combinations, and the transmission efficiency is low because the data is often transmitted with a smaller bandwidth in order to meet the requirement of the smaller bandwidth. For example, Primary20, Primary40, Primary80, or other bandwidths may be employed, respectively. Wherein, when the status of the Primary20 MHz channel (e.g., channel 1) is idle and the status of the other non-Primary channels is busy, "Primary 20" can be used only, and the available bandwidth is 20 MHz. When the status of the Primary40 MHz channel (e.g., channels 1, 2) is idle and the status of the remaining non-Primary channels is busy, "Primary 40" can only be used, with the available bandwidth being 40 MHz. When the status of the Primary80 MHz channels (e.g., channels 1, 2, 3, and 4) is idle and the status of the remaining non-Primary channels is busy, only "Primary 80" can be used, where the available bandwidth is 80 MHz.
The inventor of the present invention has found through research that this problem is more serious in a synchronous multilink system, and the problem of low transmission efficiency is more likely to occur. In particular, in a synchronous multilink system, since there may be one or more secondary links, and the primary/secondary links may each use a variety of bandwidths, the determined channel bandwidth is limited by a variety of conditions, which may be further reduced.
In the embodiment of the invention, the control right of TXOP is obtained through TXOP competition; comparing the first available total bandwidth with a first reference total bandwidth; determining whether to restart TXOP competition according to at least a comparison result of the first available total bandwidth and the first reference total bandwidth; wherein the first total available bandwidth is a sum of available bandwidths of one or more links. By adopting the scheme, the first reference total bandwidth is set, the available total bandwidth of the sending end is compared with the first reference total bandwidth, the current TXOP transmission is abandoned under the condition that the available total bandwidth is smaller, and the TXOP competition is restarted at least according to the comparison result of the first available total bandwidth and the first reference total bandwidth.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Referring to fig. 1, fig. 1 is a flowchart of a wireless data transmission method according to an embodiment of the present invention. The wireless data transmission method may include steps S11 to S13:
step S11: obtaining control of the TXOP via the TXOP contention;
step S12: comparing the first available total bandwidth with a first reference total bandwidth;
step S13: determining whether to restart TXOP competition according to at least a comparison result of the first available total bandwidth and the first reference total bandwidth;
wherein the first total available bandwidth is a sum of available bandwidths of one or more links.
In the implementation of step S11, the step of obtaining control of the TXOP via TXOP contention may be implemented in a conventional manner.
In a specific implementation manner of the embodiment of the present invention, the step of obtaining the control right of the TXOP via the TXOP contention may include: randomly determining a reciprocal initial value from an initial backoff window (back off window); calculating the initial value of the original reciprocal by subtracting one to obtain an updated reciprocal value when the state of a main 20MHz channel is idle at each reciprocal time interval (slot time); and when the updated reciprocal value is zero, determining to obtain the control right of the TXOP.
In the embodiment of the present invention, the control right of the TXOP is obtained through TXOP contention by setting a Back-off to zero step (Back-off to zero), that is, timing each time the state of the main 20MHz channel is idle, and determining to obtain the control right of the TXOP only after the number of time units (e.g., slots) of the timing duration reaches a preset number of times.
Further, the wireless data transmission method further includes: and determining a random inverse initial value when the TXOP competition is restarted.
And 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 invention, the backoff window used when the TXOP competition is restarted is set to be smaller, so that the waiting time for obtaining the control right of the TXOP again can be reduced, the sending end can obtain the control right of the TXOP again more easily after abandoning the control right of the TXOP, and the data transmission efficiency of a system can be effectively improved.
In an implementation of step S12, the first available total bandwidth is compared with a first reference total bandwidth.
The first Available Total Bandwidth (ATBW) is used to indicate an Available Total Bandwidth that can be used when the sending end determines to send data using the TXOP. Specifically, if the wireless data transmission method is used for single-link data transmission, the available total bandwidth may be regarded as an available bandwidth of one link, for example, an available bandwidth of the single link; if the wireless data transmission method is used for multi-link data transmission, the available total bandwidth can be regarded as the sum of the available bandwidths of the plurality of links.
The first Reference Total Bandwidth (RTBW) is used to indicate a value for comparison, so that the transmitting end determines whether to restart TXOP contention according to at least a comparison result of the first available Total Bandwidth and the first Reference Total Bandwidth. Specifically, the first reference total bandwidth may be a preset static value, or may be a dynamic value determined according to historical data.
It is noted that the first reference total bandwidth may be determined in different ways. In a specific embodiment, the first reference total bandwidth may be regarded as a sum of reference bandwidths of one or more links; in another specific embodiment, the first reference total bandwidth may be further regarded as an average value of the first available total bandwidth within a preset historical duration.
In another embodiment of the present invention, the reference bandwidth of each link is not defined and the first reference total bandwidth is directly set or obtained.
Further, the average total bandwidth may be an average value of a first available total bandwidth of the link in a preset historical duration, the first reference total bandwidth is a product of the average value of the first available total bandwidth in the preset historical duration and a preset weight value, where the preset weight value is an adjustment value used as a threshold, and the adjustable range is 0.2-5, and the common set value may be slightly larger or smaller than 1, for example, set to 0.9-1.1.
It should be noted that, in a specific implementation manner of the embodiment of the present invention, the first reference total bandwidth is determined according to a reference bandwidth of each link, the reference bandwidth of each link may be a preset fixed bandwidth, and the reference bandwidths of different links may be the same. In the embodiment of the invention, the reference bandwidths of different links are set to be the same, which is beneficial to the use of specification management.
In a further specific implementation manner of the embodiment of the present invention, the reference bandwidth of each link may be an average value of available bandwidths of the link within a preset historical time period.
In the embodiment of the invention, the reference bandwidth of each link can be set as the average value of the available bandwidth of the link in the preset historical time, the reference bandwidth of each link can be dynamically determined, and the first reference total bandwidth is further dynamically determined, so that the setting of the first reference total bandwidth is more consistent with the actual condition of a sending end, and the accuracy is improved.
In a specific implementation of step S13, the sender determines whether to restart TXOP contention according to at least a comparison result between 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, determining whether to transmit data using the TXOP.
In this embodiment of the present invention, when the first available total bandwidth is greater than or equal to the first reference total bandwidth, it may be determined that the sending condition of the sending end side is satisfied, and the data to be transmitted may be directly sent or a condition of the receiving end may be confirmed next.
Further, the wireless data transmission method further includes: and if the TXOP competition is determined not to be restarted, continuously confirming in a preset confirmation duration, and setting a network allocation vector in the preset confirmation duration.
In this embodiment of the present invention, when the first available total bandwidth is smaller than the first reference total bandwidth, it may be determined that the sending condition of the sending end side is not satisfied, and the TXOP contention may be restarted, or when it is determined that the TXOP contention is not restarted, the confirmation may be continuously performed within a preset time duration. Further, if the acknowledgement is to be continuously performed within the preset duration, a Network Allocation Vector (NAV) within the preset duration should be set to prevent other devices from continuously counting down or transmitting within the preset duration. It should be noted that the method for setting up the network allocation vector may be set up by using an existing conventional scheme, which is not limited in the embodiment of the present invention.
Referring to fig. 2, fig. 2 is a flowchart of an embodiment of step S13 in fig. 1. The step of determining whether to restart TXOP contention according to at least the comparison result of the first available total bandwidth and the first reference total bandwidth may include steps S21 to S23, which are described below.
In step S21, if the first available total bandwidth is smaller than the first reference total bandwidth, the first available total bandwidth is continuously compared with the first reference total bandwidth for a preset time duration.
In step S22, if the first available total bandwidth is greater than or equal to the first reference total bandwidth as a result of any comparison, it is determined whether to transmit data using the TXOP.
In this embodiment of the present invention, when the comparison result at any time indicates that the first available total bandwidth is greater than or equal to the first reference total bandwidth, it may be determined that the sending condition of the sending end side is satisfied, and the data to be transmitted may be directly sent or the condition of the receiving end may be confirmed next.
In step S23, if the comparison result of each time is that the first available total bandwidth is continuously smaller than the first reference total bandwidth, it is determined to restart the TXOP contention when the preset time duration ends.
In the embodiment of the present invention, when it is determined that the available total bandwidth is smaller, it is determined whether to restart the TXOP contention according to a comparison result of continuously comparing the first available total bandwidth with the first reference total bandwidth, in addition to a condition that the first available total bandwidth is smaller than the first reference total bandwidth, and compared with a case that the TXOP contention is restarted as long as the first available total bandwidth is smaller than the first reference total bandwidth, by using the scheme of the embodiment of the present invention, a number of comparison times can be provided more, so as to improve a purpose of implementing transmission by using a larger bandwidth after obtaining the control right, and further improve data transmission efficiency of the system on the basis of using the larger bandwidth.
In a specific implementation, when it is determined that the sending condition on the sending end side is satisfied, the condition of the receiving end may be confirmed for the case of multilink data transmission and single-link data transmission, respectively.
Referring to fig. 3, fig. 3 is a flowchart of an embodiment of step S22 in fig. 2. The method illustrated in fig. 3 may be used for multilink data transmission.
The step of determining whether to transmit data using the TXOP may include steps S31 to S34, each of which is described below.
In step S31, dynamic bandwidth signaling is sent to the corresponding link of the receiving end through each link, so that the receiving end determines the available bandwidth of each link for transmitting data.
The dynamic bandwidth signaling may adopt request to send-Clear to send (RTS-CTS) dynamic bandwidth signaling. Where CTS may be considered a response to RTS.
Further, if a Network Allocation Vector (NAV) is set by using dynamic BW signaling of RTS-CTS, the NAV may be released before the TXOP is restarted, so that the data transmission efficiency of the system may be guaranteed by releasing the NAV when the TXOP is not employed.
In step S32, the available bandwidth for transmitting data of the current link is confirmed from the receiving end through each link respectively.
In step S33, the acknowledgments for each link are summed to obtain a second total available bandwidth.
In a specific implementation, the second available total bandwidth may be used to indicate an available total bandwidth that may be used when data is transmitted and received using the TXOP, and may be a sum of acknowledgement available bandwidths of the links. Wherein the second available total bandwidth may be acknowledged by a transmitting end.
In step S34, if the second available total bandwidth is greater than or equal to the receiver-side first reference total bandwidth, it is determined to transmit data using the TXOP.
In the embodiment of the present invention, when the wireless data transmission method is used for multilink data transmission, when the first available total bandwidth is greater than or equal to the first reference total bandwidth, a dynamic bandwidth signaling may be sent to a corresponding link of the receiving end to determine an available bandwidth and a second available total bandwidth after considering a channel state of the receiving end, and then when the second available total bandwidth is greater than or equal to the second reference total bandwidth, it is determined to transmit data using the TXOP, so that an interference situation of the receiving end may be further considered, a reception failure due to a channel interference situation of the receiving end being different from that of the transmitting end is avoided, and data transmission efficiency of the system is effectively guaranteed.
It is noted that the second reference total bandwidth is less than or equal to the first reference total bandwidth.
Taking an example that the dynamic bandwidth signaling sent by the sending end indicates that the available bandwidth of one link is 80MHz, if the available bandwidth of the receiving end on the current link is 40MHz, the receiving end determines that the available bandwidth for transmitting data is the smaller value of the two data, that is, 40 MHz.
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 transmitting data is the smaller value of the two data, namely 40 MHz; if the sending end indicates 40MHz and 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, namely 0; if the sender indicates 40MHz and the available bandwidth of the receiver is 40MHz, the receiver determines that the available bandwidth for transmitting data is 40 MHz.
Referring to fig. 4, fig. 4 is a flowchart of another specific embodiment of step S22 in fig. 2. The method shown in fig. 4 may be used for single link data transmission.
The step of determining whether to transmit data using the TXOP may include steps S41 to S43, each of which is described below.
In step S41, dynamic bandwidth signaling is sent to the receiving end, so that the receiving end determines the available bandwidth of the current link for transmitting data.
In step S42, the available bandwidth of the current link for transmitting data is confirmed from the receiving end.
In step S43, if the available bandwidth of the current link for transmitting data is greater than or equal to a second reference total bandwidth, determining to transmit data using the TXOP;
wherein the second reference total bandwidth is less than or equal to the first reference total bandwidth.
In a specific implementation, the second available total bandwidth may be used to indicate an available bandwidth that may be used when data is sent and received using the TXOP, for example, an available bandwidth that may be used for acknowledgement of the single link.
In the embodiment of the present invention, when the wireless data transmission method is used for single-link data transmission, a dynamic bandwidth signaling may be sent to a receiving end to determine an available bandwidth of the receiving end when a first available total bandwidth is greater than or equal to a first reference total bandwidth, and then it is determined to transmit data using the TXOP only when the available total bandwidth after considering a channel state of the receiving end is greater than or equal to a second reference total bandwidth, so that a receiving capability of the receiving end may be further considered, thereby avoiding a reception failure caused by a difference between a channel interference condition of the receiving end and a transmitting end, and effectively ensuring a data transmission efficiency of a system.
In the embodiment of the present invention, by setting the first reference total bandwidth and comparing the available total bandwidth of the transmitting end with the first reference total bandwidth, when the available total bandwidth is smaller, the current TXOP transmission is abandoned, but rather, the TXOP contention is restarted at least according to the comparison result of the first available total bandwidth and the first reference total bandwidth.
It is noted that the second reference total bandwidth is less than or equal to the first reference total bandwidth. Please refer to the description in fig. 3, which is not described herein again.
Referring to fig. 5, fig. 5 is a schematic structural diagram of a wireless data transmission device according to an embodiment of the present invention. The wireless data transmission apparatus may include:
a control right obtaining module 51 adapted to obtain a control right of the TXOP via the TXOP contention;
a comparison module 52 adapted to compare the first available total bandwidth with a first reference total bandwidth;
a restart module 53, adapted to restart TXOP contention according to at least a comparison result of the first available total bandwidth and the first reference total bandwidth;
wherein the first total available bandwidth is a sum of available bandwidths of one or more links.
For the principle, specific implementation and beneficial effects of the wireless data transmission apparatus, please refer to the related descriptions related to the wireless data transmission method shown in the foregoing and fig. 1 to 4, which will not be described again here.
It should be noted that the technical solution of the present invention is applicable to a 5G (5Generation) communication system, a 4G communication system, a 3G communication system, and various future new communication systems, such as 6G, 7G, and the like.
The embodiment of the invention also provides a storage medium, wherein computer instructions are stored on the storage medium, and the steps of the wireless data transmission method are executed when the computer instructions are executed. The storage medium may be a computer-readable storage medium, and may include, for example, a non-volatile (non-volatile) or non-transitory (non-transitory) memory, and may further include an optical disc, a mechanical hard disk, a solid state hard disk, and the like.
Specifically, in the embodiment of the present invention, the processor may be a Central Processing Unit (CPU), and the processor may also be other general-purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
It will also be appreciated that the memory in the embodiments of the subject application can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The nonvolatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash memory. Volatile memory can be Random Access Memory (RAM), which acts as external cache memory. By way of example and not limitation, many forms of Random Access Memory (RAM) are available, such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (enhanced SDRAM), SDRAM (SLDRAM), synchlink DRAM (SLDRAM), and direct bus RAM (DR RAM).
The embodiment of the invention also provides a terminal, which comprises a memory and a processor, wherein the memory is stored with computer instructions capable of running on the processor, and the processor executes the steps of the wireless data transmission method when running the computer instructions. The terminal may be a sending terminal, and may further include, but is not limited to, a mobile phone, a computer, a tablet computer, and other terminal devices.
Specifically, a terminal in this embodiment may refer to various forms of User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station (mobile station, MS), a remote station, a remote terminal, a mobile device, a user terminal, a terminal device (terminal device), a wireless communication device, a user agent, or a user equipment. The terminal device may 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), a handheld device with a Wireless communication function, a computing device or other processing devices connected to a Wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a future 5G Network or a terminal device in a future evolved Public Land Mobile Network (PLMN), and the like, which is not limited in this embodiment.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (13)
1. A method of wireless data transmission, comprising the steps of:
obtaining control of the TXOP via the TXOP contention;
comparing the first available total bandwidth with a first reference total bandwidth;
determining whether to restart TXOP competition according to at least a comparison result of the first available total bandwidth and the first reference total bandwidth;
wherein the first total available bandwidth is a sum of available bandwidths of one or more links.
2. The method of claim 1, wherein obtaining control of the TXOP via TXOP contention comprises:
determining an original reciprocal initial value;
every time the state of the main 20MHz channel is idle, calculating the original reciprocal initial value minus one to obtain an updated reciprocal value;
and when the updated reciprocal value is zero, determining to obtain the control right of the TXOP.
3. The method of claim 2, further comprising:
determining a random reciprocal initial value when the TXOP competition is restarted;
and the backoff window of the random reciprocal initial value is less than or equal to the backoff window of the original reciprocal initial value.
4. The wireless data transmission method according to claim 1,
the first reference total bandwidth is a preset fixed bandwidth;
alternatively, the first and second electrodes may be,
the first reference total bandwidth is determined according to an average value of the first available total bandwidth within a preset historical time period.
5. The method according to claim 1, wherein the first reference total bandwidth is a product of an average value of first available total bandwidths within a preset historical time length and a preset weight value;
wherein the preset weight value is selected from: 0.2 to 5.
6. The method of claim 1, wherein determining whether to restart TXOP contention based on at least a comparison of the first available total bandwidth and the first reference total bandwidth comprises:
if the first available total bandwidth is smaller than the first reference total bandwidth, continuously comparing the first available total bandwidth with the first reference total bandwidth within a preset time length;
if the first available total bandwidth is larger than or equal to the first reference total bandwidth as a result of the comparison at any time, determining whether to adopt the TXOP to transmit data;
and if the comparison result of each time is that the first available total bandwidth is continuously smaller than the first reference total bandwidth, determining to restart the TXOP competition when the preset time length is over.
7. The method of claim 1, further comprising:
determining whether to transmit data using the TXOP if the first available total bandwidth is greater than or equal to the first reference total bandwidth.
8. The method of claim 6 or 7, wherein the method is used for multilink data transmission;
the determining whether to transmit data using the TXOP comprises:
respectively sending dynamic bandwidth signaling to a corresponding link of a receiving end through each link, so that the receiving end judges the available bandwidth of each link for transmitting data;
respectively confirming available bandwidth used for transmitting data of the current link from the receiving end through each link;
summing the acknowledgment available bandwidth for each of said links to obtain a second total available bandwidth;
determining to transmit data using the TXOP if the second available total bandwidth is greater than or equal to a second reference total bandwidth;
wherein the second reference total bandwidth is less than or equal to the first reference total bandwidth.
9. The method of claim 6 or 7, wherein the method is used for single link data transmission;
the determining whether to transmit data using the TXOP comprises:
sending dynamic bandwidth signaling to a receiving end so that the receiving end judges the available bandwidth of the current link for transmitting data;
confirming available bandwidth of the current link for transmitting data from the receiving end;
if the available bandwidth of the current link for transmitting data is greater than or equal to a second reference total bandwidth, determining to transmit data by adopting the TXOP;
wherein the second reference total bandwidth is less than or equal to the first reference total bandwidth.
10. The method of claim 1, further comprising:
and if the TXOP competition is determined not to be restarted, continuously confirming in a preset confirmation duration, and setting a network allocation vector in the preset confirmation duration.
11. A wireless data transmission device, comprising:
a control right obtaining module adapted to obtain a control right of the TXOP via the TXOP contention;
a comparison module adapted to compare the first available total bandwidth with a first reference total bandwidth;
a restart module adapted to restart TXOP contention according to at least a comparison result of the first available total bandwidth and the first reference total bandwidth;
wherein the first total available bandwidth is a sum of available bandwidths of one or more links.
12. A storage medium having stored thereon computer instructions which, when executed, perform the steps of the method for wireless data transmission according to any one of claims 1 to 10.
13. A terminal comprising a memory and a processor, the memory having stored thereon computer instructions executable on the processor, wherein the processor, when executing the computer instructions, performs the steps of the wireless data transmission method according to any one of claims 1 to 10.
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| CN201911337271.5A CN111132368B (en) | 2019-12-23 | 2019-12-23 | Wireless data transmission method and device, storage medium and terminal |
| PCT/CN2020/133245 WO2021129330A1 (en) | 2019-12-23 | 2020-12-02 | Method and device for transmitting wireless data, storage medium, and terminal |
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| CN201911337271.5A CN111132368B (en) | 2019-12-23 | 2019-12-23 | Wireless data transmission method and device, storage medium and terminal |
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| US8737405B2 (en) * | 2010-06-11 | 2014-05-27 | Marvell World Trade Ltd. | Method and apparatus for determining channel bandwidth |
| US9820304B2 (en) * | 2011-01-11 | 2017-11-14 | Intel Corporation | Transmission rules within a TXOP for wider bandwidth operation |
| CN104185217B (en) * | 2014-05-09 | 2019-08-27 | 中兴通讯股份有限公司 | Parallel data transmission processing method and processing device |
| US9949290B2 (en) * | 2014-10-16 | 2018-04-17 | Newracom, Inc. | Bandwidth determination for multiple user transmission in a high efficiency wireless LAN |
| US9999069B2 (en) * | 2016-03-31 | 2018-06-12 | Qualcomm Incorporated | MU-MIMO dynamic bandwidth selection |
| CN111132368B (en) * | 2019-12-23 | 2022-08-09 | 展讯通信（上海）有限公司 | Wireless data transmission method and device, storage medium and terminal |
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| CN104320173A (en) * | 2010-06-29 | 2015-01-28 | Lg电子株式会社 | Method and apparatus for transmitting data frame in WLAN system |
| CN102694633A (en) * | 2011-03-21 | 2012-09-26 | 中兴通讯股份有限公司 | Method and system for transmission of dynamic bandwidth data frame |
| CN110418404A (en) * | 2019-09-06 | 2019-11-05 | 展讯通信（上海）有限公司 | Multi-chain circuit transmission, method of reseptance and device, storage medium, terminal |
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| CN111132368A (en) | 2020-05-08 |
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