CN107370526A - Data transmission method and terminal device - Google Patents
Data transmission method and terminal device Download PDFInfo
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- CN107370526A CN107370526A CN201710819283.6A CN201710819283A CN107370526A CN 107370526 A CN107370526 A CN 107370526A CN 201710819283 A CN201710819283 A CN 201710819283A CN 107370526 A CN107370526 A CN 107370526A
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- data
- terminal equipment
- target frame
- terminal
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Classifications
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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
- H04W74/085—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a random access procedure with collision treatment collision avoidance
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
- H04W48/10—Access restriction or access information delivery, e.g. discovery data delivery using broadcasted information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/10—Small scale networks; Flat hierarchical networks
- H04W84/12—WLAN [Wireless Local Area Networks]
Abstract
The embodiment of the present invention provides a kind of data transmission method and terminal device, wherein, this method includes：First terminal equipment in multi-user's multiple-input and multiple-output MIMO WLAN wlan systems to wireless access points AP when sending data, the quantity of the second terminal equipment of data is periodically being transmitted in detection channel, and target frame whether has been broadcasted in the channel, the target frame is used to represent to generate data transmission conflict in the channel；If the quantity of the second terminal equipment has the target frame more than broadcast in the AP maximum quantities that can be carried and/or the channel, the first terminal equipment stops sending data.Method provided in an embodiment of the present invention and terminal device, it is possible to increase the time of data failed transmission in the channel, and then improve the utilization rate of channel resource.
Description
Technical field
The present embodiments relate to communication technical field, more particularly to a kind of data transmission method and terminal device.
Background technology
Multi-user's multiple-input and multiple-output (Multiple-Input Multiple-Output, abbreviation MIMO) WLAN
(Wireless Local Area Networks, abbreviation WLAN) system be it is a kind of allow multiple users simultaneously with it is same wireless
The communication system that access points (Wireless Access Point, abbreviation AP) are communicated.In the up channel of the system
Using Carrier Sense Multiple Access CSMA/ conflict avoidances CA Channel Access Mechanism in access mechanism, it is by using different
Walk Channel Access Mechanism and improve channel utilization, collision when reducing user's competitive channel by binary exponential backoff algorithm is general
Rate, ensure to transmit the integrality of data by using the affirmation mechanism for confirming character (Acknowledgement, abbreviation ACK).
But in the up channel access mechanism of the system, shadow of the failed transmission to Channel holding time is not accounted for
Ring, user can only have found data transmission fails after the data transfer ends by the missing of ACK frames, when being transmitted so as to lead to the failure
Between it is longer, cause the waste of time and resource.
The content of the invention
The embodiment of the present invention provides a kind of data transmission method and terminal device, to reduce the failure of data in the channel
Transmission time, improve the utilization rate of channel resource.
First aspect of the embodiment of the present invention provides a kind of data transmission method, and this method includes：
First terminal equipment in multi-user's multiple-input and multiple-output MIMO WLAN wlan systems is to accessing wirelessly
When access point AP sends data, the quantity for the second terminal equipment that data are being transmitted in channel, Yi Jisuo are periodically detected
State and target frame whether has been broadcasted in channel, the target frame is used to represent to generate data transmission conflict in the channel；
If the quantity of the second terminal equipment is wide more than in the AP maximum quantities that can be carried and/or the channel
The target frame is broadcast, then the first terminal equipment stops sending data.
Second aspect of the embodiment of the present invention provides a kind of terminal device, and the terminal device is applied to MIMO wlan systems, wraps
Include：
First detection module, for when sending data to wireless access points AP, periodically detecting in channel just
In the quantity of the second terminal equipment of transmission data, and target frame whether is broadcasted in the channel, the target frame is used for
Represent to generate data transmission conflict in the channel；
Sending module, for the quantity of the second terminal equipment exceed the maximum quantities that can carry of the AP with/
Or broadcast when having the target frame, stops sending data in the channel.
In embodiments of the present invention, first terminal equipment passes through the cycle when sending data to wireless access points AP
The quantity of the second terminal equipment of data is being transmitted in the detection channel of property, and is detecting whether to have broadcasted in the channel and is used for
The target frame of data transmission conflict is generated in expression channel, wherein, it can be carried when the quantity of second terminal equipment exceedes AP
Maximum quantity and/or the channel in broadcast have target frame, then stop send data.Because the embodiment of the present invention is passed in data
The data transmission scenarios in channel are periodically detected in defeated process, so as to find letter in time in data transmission procedure
The data transmission conflict occurred in road, and then stop sending data in time, the failed transmission time of data in the channel is reduced,
Improve the utilization rate of channel resource.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also
To obtain other accompanying drawings according to these accompanying drawings.
Fig. 1 is a kind of schematic diagram of a scenario provided in an embodiment of the present invention；
Fig. 2 is a kind of flow chart for data transmission method that one embodiment of the invention provides；
Fig. 3 is a kind of flow chart for data transmission method that further embodiment of this invention provides；
Fig. 4 is a kind of structural representation for terminal device that one embodiment of the invention provides；
Fig. 5 is the structural representation for the terminal device that further embodiment of this invention provides；
Fig. 6 is the structural representation for the terminal device that further embodiment of this invention provides.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
The term " comprising " and " having " of description and claims of this specification and their any deformation, it is intended that
Be to cover it is non-exclusive include, for example, the device for the process or structure for containing series of steps is not necessarily limited to clearly arrange
It is that those structures or step for going out but may include are not listed clearly or for the intrinsic other steps of these processes or device
Rapid or structure.
Fig. 1 is a kind of schematic diagram of a scenario provided in an embodiment of the present invention, have in this scenario n terminal device simultaneously with nothing
Line access points AP is communicated.Up channel is studied under the scene and (transmits the letter of data to AP for terminal device
Road) access mechanism when, it is main to consider some following factor：
Channel utilization：Asynchronous channel access mechanism is because allowing multiple users in a transmitting procedure while being passed
It is defeated, channel resource can be made full use of, improves channel utilization, and then bring the lifting of systematic function.
Collision probability：Binary exponential backoff algorithm, can be effective because needing user to select random back value to be kept out of the way
The probability that user collides is reduced, reduces failed transmission duration, and then bring the lifting of systematic function.
The failed transmission duration of data：When colliding generation, all users are notified to stop working as by AP Broadcasting Control frames in time
Preceding transmission, it is possible to reduce failed transmission is to the occupancy of channel time, so as to lifting system performance.
Data integrity：If being collided in transmitting procedure, current transmission is failed transmission, it is necessary to in current transmission
Packet retransmitted.If not taking into full account re-transmission factor in the design of Channel Access Mechanism, packet may result in
Loss, influence data integrity.At the aspect that guarantees data integrity, relatively effective is to use affirmation mechanism：If AP successes
The data frame from user is received, then replys acknowledgement frame and gives each transmission user, user receives acknowledgement frame and then recognized at the appointed time
For this transmission success, begin preparing for transmitting next time；Otherwise, if AP does not have successful data reception frame, acknowledgement frame is not replied
To user is sent, send user and can not receive the acknowledgement frame from AP at the appointed time, then it is assumed that collided, begun preparing for
Retransmit next time.
Fairly perfect in existing multiuser MIMO wlan system up channel access mechanism is to be based on collision sense multiple
Access/collision avoids the Channel Access Mechanism of (CSMA/CA).It improves channel usage by using asynchronous channel access mechanism
Rate, reduce collision probability during user's competitive channel by using binary exponential backoff algorithm, protected by using affirmation mechanism
Integrity of verified data, but because it does not account for occupancy of the failed transmission to channel time, it is longer not to there is failed transmission duration
Foot.Specifically, it is based on existing in CSMA/CA Channel Access Mechanisms, user can only pass through after data transmission procedure terminates
The missing of acknowledgement frame finds that this is transmitted as failed transmission, and the transmission duration that leads to the failure is longer.It is multiple with increasing for number of users
User selects the probability increase of same backoff value, and the probability of failed transmission can also increase, and the waste problem to channel time will
Highlight, cause the degradation of systematic function.
The problem of existing for above-mentioned scene, the embodiment of the present invention provide a kind of data transmission method, in the method, eventually
End equipment is examined when sending data to AP by the quantity of the terminal device periodically to transmitting data in channel
Survey, and determine to whether there is in channel and be used to represent the target frame that data transmission conflict in present channel be present, when in channel just
When target frame be present in the maximum quantity and/or channel that the quantity of the terminal device of transmission data can carry more than AP, eventually
End equipment stops sending data, so as to reach timely discovery data transmission conflict, reduces the failed transmission of data in the channel
The purpose of time, improve the utilization rate of channel resource.
Fig. 2 is a kind of flow chart for data transmission method that one embodiment of the invention provides, and this method can be by multi-user
Terminal device in MIMO wlan systems performs, as shown in Fig. 2 this method includes：
First terminal equipment in step 101, multi-user's multiple-input and multiple-output MIMO WLAN wlan systems to
When wireless access points AP sends data, the number for the second terminal equipment that data are being transmitted in channel is periodically detected
Amount, and target frame whether has been broadcasted in the channel, the target frame is used to represent to generate data transfer in the channel
Conflict.
The channel being related in the present embodiment is up channel, i.e., terminal device is used for the channel that data are transmitted to AP.
First terminal equipment is just to transmit any terminal device of data in the channel, and second terminal equipment is except first is whole
Outside end equipment, the terminal device of data is just transmitted in the channel, it can also be multiple that second terminal equipment, which can be one,.
Wherein, the target frame being related in the present embodiment can be broadcasted in the channel by AP or by channel
What other terminal devices for transmitting data were broadcasted in the channel.Specifically, when the terminal device in AP and/or channel is found
Data in channel are collided in transmission, or what is failed due to other reasonses be sent to AP, then AP and/or
Terminal device in channel broadcast target frame in the channel, to prompt the other-end equipment present channel in channel unavailable.
If step 102, the quantity of the second terminal equipment exceed the maximum quantities that can carry of the AP and/or described
Broadcast has the target frame in channel, then the first terminal equipment stops sending data.
When multiuser MIMO wlan system is established, AP needs the quantity according to the terminal device for sending association response frame
It is determined that the quantity of active terminal devices living, and determine that the maximum that it can be carried is whole further combined with itself effective reception antenna number
End equipment quantity (allows the maximum terminal device quantity accessed parallel).Under general scene, the maximum that AP can be carried is eventually
End equipment data are equal to the quantity of its own effective reception antenna, certainly, have the special setting to be to AP bearing capacitys at some
In system, the two may be different.
When transmitting the quantity of terminal device of data in channel more than the maximum quantity that AP can be carried, now,
The data transmitted in channel will necessarily collide, because AP does not have enough reception antennas to receive those parallel datas.This
When, first terminal equipment stops sending data.
When existing in channel by the target frame of AP and/or other-end device broadcasts, then illustrate AP and/or other-end
Equipment is had been detected by there occurs data transmission conflict in channel, and now, first terminal equipment stops sending data.
Further, if the quantity that the terminal device of data is being transmitted in channel exceedes the maximum number that AP can be carried
Amount, and do not include target frame in channel, then illustrate data transmission conflict in channel be present, and first terminal equipment is the first discovery
The equipment of data transmission conflict in channel be present, now first terminal broadcast target frame in the channel, to prompt its in channel
Data transmission conflict be present in his terminal device and/or AP channels.
In the present embodiment, first terminal equipment to wireless access points AP when sending data, by periodic
The quantity of the second terminal equipment of data is being transmitted in detection channel, and is detecting and whether has been broadcasted in the channel for representing
The target frame of data transmission conflict is generated in channel, wherein, it can be carried most when the quantity of second terminal equipment exceedes AP
Broadcast has target frame in big quantity and/or the channel, then stops sending data.Because the present embodiment is the process in data transfer
In periodically detection channel in data transmission scenarios, so as in data transmission procedure in time find channel in occur
Data transmission conflict, and then in time stop send data, reduce the failed transmission time of data in the channel, improve letter
The utilization rate of road resource.
Fig. 3 is a kind of flow chart for data transmission method that further embodiment of this invention provides, as shown in figure 3, real in Fig. 2
On the basis of applying example, this method includes：
Whether step 201, first terminal equipment detect the free time of its channel between the AP more than default
Time interval, wherein, if then performing step 202, otherwise persistently detect.
Wherein, the time interval of above-mentioned element sum, can be configured according to the requirement of the standard and system of system, this
It is not specifically limited in embodiment.
Step 202, the first terminal equipment perform default avoidance mechanism, and successfully complete the avoidance mechanism.
In the present embodiment, during first terminal equipment performs avoidance mechanism, first terminal equipment is continued to monitor in channel
Transmitting the quantity of the terminal device of data, and the quantity for the terminal device that the quantity of the terminal device and AP can be carried
Matched, in a matching process, can be carried if the quantity that the terminal device of data is being transmitted in channel is less than AP
Terminal device quantity, then back-off timer is subtracted 1, on the contrary then terminal device stops current avoidance mechanism, begins preparing for
The channel competition transmitted next time.The rest may be inferred, and when the timing of back-off timer reaches, first terminal equipment performs step
203。
Step 203, the first terminal detect the third terminal that data are being transmitted in its channel between the AP
The target frame whether has been broadcasted in the quantity of equipment, and the detection channel.
In the present embodiment, before third terminal equipment refers to that first terminal equipment does not also access channel, transmitted in channel
The terminal device of data.
If step 204, the quantity of the third terminal are less than the maximum quantity that the AP can be carried, and in the channel
Do not include the target frame, then the first terminal accesses the channel, and transmits data on that channel.
Step 205, first terminal equipment are periodically detected in channel when sending data to wireless access points AP
The quantity of the second terminal equipment of data is being transmitted, and target frame whether has been broadcasted in the channel, the target frame is used
Data transmission conflict is generated in the expression channel.
If step 206, the quantity of the second terminal equipment exceed the maximum quantities that can carry of the AP and/or described
Broadcast has the target frame in channel, then the first terminal equipment stops sending data.
In the present embodiment, first terminal equipment to wireless access points AP when sending data, by periodic
The quantity of the second terminal equipment of data is being transmitted in detection channel, and is detecting and whether has been broadcasted in the channel for representing
The target frame of data transmission conflict is generated in channel, wherein, it can be carried most when the quantity of second terminal equipment exceedes AP
Broadcast has target frame in big quantity and/or the channel, then stops sending data.Because the present embodiment is the process in data transfer
In periodically detection channel in data transmission scenarios, so as in data transmission procedure in time find channel in occur
Data transmission conflict, and then in time stop send data, reduce the failed transmission time of data in the channel, improve letter
The utilization rate of road resource.
Fig. 4 is a kind of structural representation for terminal device that one embodiment of the invention provides, as shown in figure 4, the terminal is set
It is standby, including：
First detection module 11, for when sending data to wireless access points AP, periodically detecting in channel
The quantity of the second terminal equipment of data is being transmitted, and target frame whether has been broadcasted in the channel, the target frame is used
Data transmission conflict is generated in the expression channel；
Sending module 12, exceed the maximum quantities that can carry of the AP for the quantity in the second terminal equipment
And/or broadcast when having the target frame, stops sending data in the channel.
Optionally, in addition to：
Broadcast module, for exceeding the maximum quantities that can carry of the AP in the quantity of the second terminal equipment, and
When not including the target frame in the channel, the target frame is broadcasted in the channel.
The terminal device that the present embodiment provides is able to carry out the technical scheme of Fig. 2 embodiments, its executive mode and beneficial effect
Fruit seemingly, repeats no more herein.
Fig. 5 is the structural representation for the terminal device that further embodiment of this invention provides, as shown in figure 5, in Fig. 4 embodiments
On the basis of, the equipment also includes：
Second detection module 13, the 3rd end of data is being transmitted in the channel for being detected before the access channel
The target frame whether has been broadcasted in the quantity of end equipment, and the detection channel；
Channel access module 14, it is less than the maximum quantities that can carry of the AP for the quantity in the third terminal,
And when not including the target frame in the channel, the channel is accessed, and trigger the sending module and pass on that channel
Transmission of data.
Whether the 3rd detection module 15, the free time for detecting the channel are more than default time interval；
Execution module 16, for when the free time being more than default time interval, performing default avoidance mechanism；
Second detection module 13, for after the avoidance mechanism successfully completes, detecting and being passed in the channel
The target frame whether has been broadcasted in the quantity of the third terminal equipment of transmission of data, and the detection channel.
Optionally, in addition to：
Monitoring modular, for when performing the avoidance mechanism, continuing to monitor the end that data are being transmitted in the channel
Whether the quantity of end equipment exceedes the maximum quantity that the channel can carry；
The execution module, it is additionally operable to transmitting the terminal of data in the monitoring module monitors obtain the channel
When the quantity of equipment exceedes the maximum quantity that the channel can carry, stop performing the avoidance mechanism.
The terminal device that the present embodiment provides is able to carry out the technical scheme of Fig. 3 embodiments, its executive mode and beneficial effect
Fruit seemingly, repeats no more herein.
Fig. 6 is the structural representation for the terminal device that further embodiment of this invention provides, and the equipment can be mobile phone,
Computer, digital broadcast terminal, messaging devices, game console, tablet device, Medical Devices, body-building equipment, individual number
Word assistant etc..
Device 800 can include following one or more assemblies：Processing component 802, memory 804, power supply module 806,
Multimedia groupware 808, audio-frequency assembly 810, input/output (I/O) interface 812, sensor cluster 814, and communication component
816。
The integrated operation of the usual control device 800 of processing component 802, such as communicated with display, call, data, phase
The operation that machine operates and record operation is associated.Processing component 802 can refer to including one or more processors 820 to perform
Order, to complete all or part of step of above-mentioned method.In addition, processing component 802 can include one or more modules, just
Interaction between processing component 802 and other assemblies.For example, processing component 802 can include multi-media module, it is more to facilitate
Interaction between media component 808 and processing component 802.
Memory 804 is configured as storing various types of data to support the operation in device 800.These data are shown
Example includes the instruction of any application program or method for being operated on device 800, contact data, telephone book data, disappears
Breath, picture, video etc..Memory 804 can be by any kind of volatibility or non-volatile memory device or their group
Close and realize, as static RAM (SRAM), Electrically Erasable Read Only Memory (EEPROM) are erasable to compile
Journey read-only storage (EPROM), programmable read only memory (PROM), read-only storage (ROM), magnetic memory, flash
Device, disk or CD.
Power supply module 806 provides electric power for the various assemblies of device 800.Power supply module 806 can include power management system
System, one or more power supplys, and other components associated with generating, managing and distributing electric power for device 800.
Multimedia groupware 808 is included in the screen of one output interface of offer between described device 800 and user.One
In a little embodiments, screen can include liquid crystal display (LCD) and touch panel (TP).If screen includes touch panel, screen
Curtain may be implemented as touch-screen, to receive the input signal from user.Touch panel includes one or more touch sensings
Device is with the gesture on sensing touch, slip and touch panel.The touch sensor can not only sensing touch or sliding action
Border, but also detect and touched or the related duration and pressure of slide with described.In certain embodiments, more matchmakers
Body component 808 includes a front camera and/or rear camera.When device 800 is in operator scheme, such as screening-mode or
During video mode, front camera and/or rear camera can receive outside multi-medium data.Each front camera and
Rear camera can be a fixed optical lens system or have focusing and optical zoom capabilities.
Audio-frequency assembly 810 is configured as output and/or input audio signal.For example, audio-frequency assembly 810 includes a Mike
Wind (MIC), when device 800 is in operator scheme, during such as call model, logging mode and speech recognition mode, microphone by with
It is set to reception external audio signal.The audio signal received can be further stored in memory 804 or via communication set
Part 816 is sent.In certain embodiments, audio-frequency assembly 810 also includes a loudspeaker, for exports audio signal.
I/O interfaces 812 provide interface between processing component 802 and peripheral interface module, and above-mentioned peripheral interface module can
To be keyboard, click wheel, button etc..These buttons may include but be not limited to：Home button, volume button, start button and lock
Determine button.
Sensor cluster 814 includes one or more sensors, and the state for providing various aspects for device 800 is commented
Estimate.For example, sensor cluster 814 can detect opening/closed mode of device 800, and the relative positioning of component, for example, it is described
Component is the display and keypad of device 800, and sensor cluster 814 can be with 800 1 components of detection means 800 or device
Position change, the existence or non-existence that user contacts with device 800, the orientation of device 800 or acceleration/deceleration and device 800
Temperature change.Sensor cluster 814 can include proximity transducer, be configured to detect in no any physical contact
The presence of neighbouring object.Sensor cluster 814 can also include optical sensor, such as CMOS or ccd image sensor, for into
As being used in application.In certain embodiments, the sensor cluster 814 can also include acceleration transducer, gyro sensors
Device, Magnetic Sensor, pressure sensor or temperature sensor.
Communication component 816 is configured to facilitate the communication of wired or wireless way between device 800 and other equipment.Device
800 can access the wireless network based on communication standard, such as WiFi, 2G or 3G, or combinations thereof.In an exemplary implementation
In example, communication component 816 receives broadcast singal or broadcast related information from external broadcasting management system via broadcast channel.
In one exemplary embodiment, the communication component 816 also includes near-field communication (NFC) module, to promote junction service.Example
Such as, in NFC module radio frequency identification (RFID) technology can be based on, Infrared Data Association (IrDA) technology, ultra wide band (UWB) technology,
Bluetooth (BT) technology and other technologies are realized.
In the exemplary embodiment, device 800 can be believed by one or more application specific integrated circuits (ASIC), numeral
Number processor (DSP), digital signal processing appts (DSPD), PLD (PLD), field programmable gate array
(FPGA), controller, microcontroller, microprocessor or other electronic components are realized, for performing the above method.
In the exemplary embodiment, a kind of non-transitorycomputer readable storage medium including instructing, example are additionally provided
Such as include the memory 804 of instruction, above-mentioned instruction can be performed to complete the above method by the processor 820 of device 800.For example,
The non-transitorycomputer readable storage medium can be ROM, random access memory (RAM), CD-ROM, tape, floppy disk
With optical data storage devices etc..
A kind of non-transitorycomputer readable storage medium, when the instruction in the storage medium is by the processor of terminal device
During execution so that terminal device is able to carry out following method：
First terminal equipment in multi-user's multiple-input and multiple-output MIMO WLAN wlan systems is to accessing wirelessly
When access point AP sends data, the quantity for the second terminal equipment that data are being transmitted in channel, Yi Jisuo are periodically detected
State and target frame whether has been broadcasted in channel, the target frame is used to represent to generate data transmission conflict in the channel；
If the quantity of the second terminal equipment is wide more than in the AP maximum quantities that can be carried and/or the channel
The target frame is broadcast, then the first terminal equipment stops sending data.
In embodiments of the present invention, first terminal equipment passes through the cycle when sending data to wireless access points AP
The quantity of the second terminal equipment of data is being transmitted in the detection channel of property, and is detecting whether to have broadcasted in the channel and is used for
The target frame of data transmission conflict is generated in expression channel, wherein, it can be carried when the quantity of second terminal equipment exceedes AP
Maximum quantity and/or the channel in broadcast have target frame, then stop send data.Because the embodiment of the present invention is passed in data
The data transmission scenarios in channel are periodically detected in defeated process, so as to find letter in time in data transmission procedure
The data transmission conflict occurred in road, and then stop sending data in time, the failed transmission time of data in the channel is reduced,
Improve the utilization rate of channel resource.
It is last it should be noted that one of ordinary skill in the art will appreciate that whole in above-described embodiment method or
Part flow, it is that by computer program the hardware of correlation can be instructed to complete, described program can be stored in a computer
In readable storage medium storing program for executing, the program is upon execution, it may include such as the flow of the embodiment of above-mentioned each method.Wherein, it is described to deposit
Storage media can be disk, CD, read-only memory (ROM) or random access memory (RAM) etc..
Each functional unit in the embodiment of the present invention can be integrated in a processing module or unit
Individually be physically present, can also two or more units be integrated in a module.Above-mentioned integrated module both can be with
Realized, can also be realized in the form of software function module in the form of hardware.If the integrated module is with software
The form of functional module realizes, and computer-readable is deposited as independent production marketing or in use, one can also be stored in
In storage media.Storage medium mentioned above can be read-only storage, disk or CD etc..
Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；Although with reference to foregoing each reality
Example is applied the present invention is described in detail, it will be understood by those within the art that：It still can be to foregoing each
Technical scheme described in embodiment is modified, and either carries out equivalent substitution to which part or all technical characteristic；And
These modifications are replaced, and the essence of appropriate technical solution is departed from the scope of various embodiments of the present invention technical scheme.
Claims (10)
- A kind of 1. data transmission method, it is characterised in that including：First terminal equipment in multi-user's multiple-input and multiple-output MIMO WLAN wlan systems accesses to accessing wirelessly When point AP sends data, the quantity for the second terminal equipment that data are being transmitted in channel, and the letter are periodically detected Whether target frame has been broadcasted in road, and the target frame is used to represent to generate data transmission conflict in the channel；If the quantity of the second terminal equipment, which exceedes to broadcast in the maximum quantities that can carry of the AP and/or the channel, to be had The target frame, then the first terminal equipment stopping send data.
- 2. according to the method for claim 1, it is characterised in that methods described includes：If the quantity of the second terminal equipment exceedes the maximum quantity that the AP can be carried, and does not include institute in the channel Target frame is stated, then the first terminal equipment broadcasts the target frame in the channel.
- 3. according to the method for claim 1, it is characterised in that transmitting the of data in periodically detection channel Before whether having broadcasted target frame in the quantity of two terminal devices, and the channel, methods described also includes：First terminal equipment detects the quantity for the third terminal equipment that data are being transmitted in its channel between AP, Yi Jijian Survey and the target frame whether has been broadcasted in the channel；If the quantity of the third terminal is less than the maximum quantity that the AP can be carried, and does not include the mesh in the channel Frame is marked, then the first terminal accesses the channel, and transmits data on that channel.
- 4. according to the method for claim 3, it is characterised in that the first terminal detects its channel between the AP In transmitting data third terminal equipment quantity, and whether broadcasted in the detection channel target frame it Before, methods described also includes：Whether the free time that the first terminal equipment detects its channel between the AP is more than default time interval；Wherein, if so, then the first terminal equipment performs default avoidance mechanism, and after the avoidance mechanism is successfully completed Detect in the quantity for the third terminal equipment that data are being transmitted in its channel between the AP, and the detection channel Whether broadcast has the target frame.
- 5. according to the method for claim 4, it is characterised in that methods described also includes：The first terminal equipment continues to monitor the terminal that data are being transmitted in the channel when performing the avoidance mechanism Whether the quantity of equipment exceedes the maximum quantity that the channel can carry；If so, then the first terminal equipment stops performing the avoidance mechanism.
- 6. a kind of terminal device, the terminal device is applied to MIMO wlan systems, it is characterised in that including：First detection module, for when sending data to wireless access points AP, periodically detecting and being passed in channel The quantity of the second terminal equipment of transmission of data, and target frame whether has been broadcasted in the channel, the target frame is used to represent Data transmission conflict is generated in the channel；Sending module, for exceeding maximum quantity and/or the institute that the AP can be carried in the quantity of the second terminal equipment When stating in channel broadcast has the target frame, stop sending data.
- 7. terminal device according to claim 6, it is characterised in that also include：Broadcast module, exceed the maximum quantities that can carry of the AP for the quantity in the second terminal equipment, and it is described When not including the target frame in channel, the target frame is broadcasted in the channel.
- 8. terminal device according to claim 6, it is characterised in that also include：Second detection module, the third terminal equipment of data is being transmitted in the channel for being detected before the access channel Quantity, and whether broadcasted the target frame in the detection channel；Channel access module, it is less than the maximum quantities that can carry of the AP for the quantity in the third terminal, and it is described When not including the target frame in channel, the channel is accessed, and trigger the sending module and transmit data on that channel.
- 9. terminal device according to claim 8, it is characterised in that also include：Whether the 3rd detection module, the free time for detecting the channel are more than default time interval；Execution module, for when the free time being more than default time interval, performing default avoidance mechanism；Second detection module, for after the avoidance mechanism successfully completes, detecting in the channel and transmitting data Third terminal equipment quantity, and whether broadcasted the target frame in the detection channel.
- 10. terminal device according to claim 9, it is characterised in that also include：Monitoring modular, the terminal for transmitting data in the channel for when performing the avoidance mechanism, continuing to monitor are set Whether standby quantity exceedes the maximum quantity that the channel can carry；The execution module, it is additionally operable to transmitting the terminal device of data in the monitoring module monitors obtain the channel Quantity when exceeding the maximum quantity that the channel can carry, the stopping execution avoidance mechanism.
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