CN105099626B - A kind of wireless communications method and relevant device - Google Patents
A kind of wireless communications method and relevant device Download PDFInfo
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- CN105099626B CN105099626B CN201510256486.XA CN201510256486A CN105099626B CN 105099626 B CN105099626 B CN 105099626B CN 201510256486 A CN201510256486 A CN 201510256486A CN 105099626 B CN105099626 B CN 105099626B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/1607—Details of the supervisory signal
- H04L1/1671—Details of the supervisory signal the supervisory signal being transmitted together with control information
- H04L1/1678—Details of the supervisory signal the supervisory signal being transmitted together with control information where the control information is for timing, e.g. time stamps
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Abstract
The embodiment of the invention discloses a kind of wireless communications method, including：Data sending terminal sends data frame to multiple data receivers；Generate confirmation request message frame；Confirmation request message frame includes the quantity information of data receiver, time synchronization information；Time synchronization information is used to indicate multiple data receivers and returns to confirmation message frame to data sending terminal simultaneously, the quantity information of data receiver be used to indicate the number in long training field domain in multiple data receivers generation confirmation message frames；Confirmation request message frame is sent to data receiver.The invention also discloses relevant devices and system, using the present invention, the signaling consumption in Polled ACK mechanism in prior art 802.11ac can effectively be reduced, and the confirmation message frame that can be adapted for using OFDMA technologies being carried out data transmission in 802.11ax is replied, and greatly improves system spectrum utilization rate and gain.
Description
Technical field
The present invention relates to the communications field more particularly to a kind of wireless communications methods and relevant device.
Background technology
With the progress of Information and Communication Technology, various wireless communication techniques have been developed recently.In these wireless communications
Among technology, WLAN (WLAN) is that one kind can be by using portable terminal (such as intelligent mobile terminal, tablet electricity
Brain, portable media player etc.) in family or enterprise or provide special services region in wirelessly on
The technology of net.
Currently, 802.11 protocol groups have set up the seminar of next-generation Wi-Fi technology --- efficient WLAN (High
Efficiency WLAN, HEW), in order to improve the utilization ratio of frequency spectrum, orthogonal frequency will be used in 802.11ax (HEW)
Multiple access (Orthogonal Frequency Division Multiple Access, OFDMA) technology carries out the transmission of data,
Data are transmitted using OFDMA technologies, can about obtain the gain of 11-25%.Also, using the prior art
The Polled ACK polls affirmation mechanisms of 802.11ac are to downlink (Down-Link, DL), multi-user (Multiuser, MU) or layer
Protocol Data Unit (Physical layer convergence procedure Protocol Data Unit, PPDU) into
Row ACK is replied, as shown in Figure 1 the principle schematic of Polled ACK mechanism in the prior art, site apparatus 1, site apparatus 2
After receiving data with site apparatus 3, after frame period SIFS one short send a block confirmation message frame, then using
After one SIFS receives the block confirmation request message frame of access point apparatus transmission, retransmit a block by a SIFS and confirm
Message frame after finally similarly receiving the block confirmation request message frame that access point apparatus is sent using a SIFS, passes through
One SIFS retransmits a block confirmation message frame.
The signaling consumption in Polled ACK mechanism in prior art 802.11ac how is reduced, further improves system frequency
Utilization rate and gain are composed, is hot issue of concern.
The content of the invention
Technical problem to be solved of the embodiment of the present invention is, provides a kind of wireless communications method, relevant device and is
System, effectively reduces the signaling consumption in Polled ACK mechanism in prior art 802.11ac, further improves system spectrum
Utilization rate and gain.
In a first aspect, an embodiment of the present invention provides a kind of wireless communications method, including：
According to transmitting terminal data frame is sent to multiple data receivers；
Generate confirmation request message frame；The quantity information of the confirmation request message frame including the data receiver, when
Between synchronizing information；The time synchronization information is used to indicate the multiple data receiver and is returned simultaneously to the data sending terminal
Confirmation message frame, the quantity information of the data receiver are used to indicate the multiple data receiver generation confirmation message frame
The number in middle long training field domain；
The confirmation request message frame is sent to the data receiver.
With reference to first aspect, in the first possible implementation, when use Orthogonal Frequency Division Multiple Access mode sends data
When, the confirmation request message frame further includes：It is used to indicate when the multiple data receiver returns to confirmation message frame in frequency
It is upper to realize synchronous frequency offset information；
When sending data using multiuser mode, the confirmation request message frame further includes：Each data receiver exists
Location information in group data receiver frame.
The possible realization method of with reference to first aspect the first, in second of possible realization method, the frequency
Offset information includes the data sending terminal and the average value of the frequency offset value of the multiple data receiver.
Second aspect, an embodiment of the present invention provides a kind of wireless communications method, including：
Receive the confirmation request message frame that data sending terminal is sent；The confirmation request message frame includes data receiver
Quantity information, time synchronization information；The time synchronization information is used to indicate multiple data receivers and is sent out simultaneously to the data
Sending end returns to confirmation message frame；
According to the confirmation request message frame, confirmation message frame is generated；The confirmation message frame is included according to the data
The long training field domain quantity information of the quantity information generation of receiving terminal；
According to the time synchronization information, transmission institute synchronous with other data receivers in the multiple data receiver
State confirmation message frame.
With reference to second aspect, in the first possible implementation, long training field domain quantity information includes height
The quantity in efficiency compatibility long training field domain.
With reference to the possible realization method of the first of second aspect or second aspect, second of possible realization side
In formula, when Orthogonal Frequency Division Multiple Access mode sends data, the confirmation request message frame, which further includes, is used to indicate the multiple number
Synchronous frequency offset information is realized in frequency when returning to confirmation message frame according to receiving terminal；
It is described according to the time synchronization information, hair synchronous with other data receivers in the multiple data receiver
The confirmation message frame is sent to include：
It is other in the time synchronization information and the frequency offset information, with the multiple data receiver
Data receiver synchronously sends the confirmation message frame on time and frequency.
The third aspect, an embodiment of the present invention provides a kind of wireless transmission device, including：
Data frame sending module, for sending data frame to multiple data receivers；
Confirmation request generation module, for generating confirmation request message frame；The confirmation request message frame includes the number
According to the quantity information of receiving terminal, time synchronization information；It is same that the time synchronization information is used to indicate the multiple data receiver
When to the data sending terminal return to confirmation message frame, the quantity information of the data receiver is used to indicate the multiple number
The number in long training field domain in confirmation message frame is generated according to receiving terminal；
Confirmation request sending module, for sending the confirmation request message frame to the data receiver.
With reference to the third aspect, in the first possible implementation, data are sent when using Orthogonal Frequency Division Multiple Access mode
When, the confirmation request message frame further includes：It is used to indicate when the multiple data receiver returns to confirmation message frame in frequency
It is upper to realize synchronous frequency offset information；
When sending data using multiuser mode, the confirmation request message frame further includes：Each data receiver exists
Location information in group data receiver frame.
With reference to the first possible realization method of the third aspect, in second of possible realization method, the frequency
Offset information includes the data sending terminal and the average value of the frequency offset value of the multiple data receiver.
Fourth aspect, the embodiment of the present invention provide a kind of radio receiver, including：
Confirmation request receiving module, for receiving the confirmation request message frame of data sending terminal transmission；The confirmation request
Message frame includes the quantity information of data receiver, time synchronization information；The time synchronization information is used to indicate multiple data
Receiving terminal returns to confirmation message frame to the data sending terminal simultaneously；
Confirmation message frame generation module, for according to the confirmation request message frame, generating confirmation message frame；The confirmation
Message frame includes the long training field domain quantity information generated according to the quantity information of the data receiver；
Synchronous sending module, for other numbers in the time synchronization information, with the multiple data receiver
The confirmation message frame is synchronously sent according to receiving terminal.
With reference to fourth aspect, in the first possible implementation, long training field domain quantity information includes height
The quantity in efficiency compatibility long training field domain.
With reference to the possible realization method of the first of fourth aspect or fourth aspect, second of possible realization side
In formula, when Orthogonal Frequency Division Multiple Access mode sends data, the confirmation request message frame, which further includes, is used to indicate the multiple number
Synchronous frequency offset information is realized in frequency when returning to confirmation message frame according to receiving terminal；
The synchronization sending module is specifically used for according to the time synchronization information and the frequency offset information, with institute
It states other data receivers in multiple data receivers and the confirmation message frame is synchronously sent on time and frequency.
5th aspect, the embodiment of the present invention provides a kind of wireless communication system, including data sending device and data receiver
Device, wherein
The data sending device be as the third aspect either the first possible realization method of the third aspect or
Wireless transmission device in second of possible realization method of the third aspect；
The data sink be as fourth aspect either the first possible realization method of fourth aspect or
Radio receiver in second of possible realization method of fourth aspect.
By implementing the embodiment of the present invention, the quantity information and time synchronization information of data receiver are included by generation
Confirmation request message frame, and be sent to data receiver；Data of the data receiver in the confirmation request message frame connect
The long training field domain quantity information of the quantity information generation of receiving end, and ultimately generate confirmation message frame and other data receivers
It is synchronous to send confirmation message frame, the signaling consumption in Polled ACK mechanism in prior art 802.11ac can be effectively reduced,
And the confirmation message frame that can be adapted for using OFDMA technologies being carried out data transmission in 802.11ax is replied, and is greatly improved
System spectrum utilization rate and gain.
Description of the drawings
It 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 attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention, for those of ordinary skill in the art, without creative efforts, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the principle schematic of Polled ACK mechanism in the prior art；
Fig. 2 is the flow diagram of wireless communications method provided by the invention；
Fig. 3 is the flow diagram of another embodiment of wireless communications method provided by the invention；
Fig. 4 is the form schematic diagram of the physical layer preamble code of confirmation message frame provided in an embodiment of the present invention；
Fig. 5 is the principle schematic that confirmation message frame provided in an embodiment of the present invention is replied；
Fig. 6 is the structure diagram of wireless transmission device provided by the invention；
Fig. 7 is the structure diagram of radio receiver provided by the invention；
Fig. 8 is the structure diagram of wireless communication system provided by the invention.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution 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, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without creative efforts
Embodiment belongs to the scope of protection of the invention.
It should be noted that the term used in embodiments of the present invention is only merely for the mesh of description specific embodiment
, it is not intended to limit the invention." the one of the embodiment of the present invention and singulative used in the attached claims
Kind ", " described " and "the" are also intended to including most forms, unless context clearly shows that other meanings.It is also understood that this
Term "and/or" used herein refers to and comprising one or more associated any or all possible group of list items purpose
It closes.
It is the flow diagram of wireless communications method provided by the invention referring to Fig. 2, first describes this from data sending terminal
Wireless communications method in inventive embodiments, this method include：
Step S200：Data sending terminal sends data frame to multiple data receivers；
Specifically, such as the communication equipment in a Basic Service Set (Basic Service Set, BSS) can phase
Data interaction is carried out between mutually, multiple data receivers as data sending terminal can be into BSS send data frame.
Step S202：Generate confirmation request message frame；The confirmation request message frame includes the number of the data receiver
Measure information, time synchronization information；The time synchronization information is used to indicate the multiple data receiver simultaneously to the data
Transmitting terminal returns to confirmation message frame, and the quantity information of the data receiver is used to indicate the multiple data receiver generation
The number in long training field domain in confirmation message frame；
Specifically, data sending terminal generation confirmation request message frame replys confirmation message, this hair with request data receiving terminal
The confirmation request message frame generated in bright embodiment includes the quantity information and time synchronization information of data receiver, such as step
Data frame is had sent to 3 data receivers, then the quantity information instruction of the data receiver there are 3 data receivers in S200
End, and when being used to indicate the plurality of data receiver generation confirmation message frame, the long training field domain included in confirmation message frame
The number of (Long Training Field, LTF)；Time synchronization information in the embodiment of the present invention connects for the plurality of data
Receiving end returns to confirmation message frame to the data sending terminal simultaneously；
Step S204：The confirmation request message frame is sent to the data receiver.
Specifically, data sending terminal sends to the data receiver and walks after multiple data receivers send data frame
The confirmation request message frame of rapid S202 generations, the data receiver to be asked to reply confirmation message.
It should be noted that the data sending in the embodiment of the present invention may be employed OFDMA modes or MU modes come into
Row, illustrates separately below for above two mode：
A, when sending data using OFDMA modes, the confirmation request message frame generated in step S202 can also include：
It is used to indicate when the multiple data receiver returns to confirmation message frame and synchronous frequency offset information is realized in frequency；
Specifically, the frequency offset information in the embodiment of the present invention can be the data sending terminal and the plurality of data receiver
The average value of the frequency offset value at end.
B, when sending data using multiuser mode, the confirmation request message frame generated in rapid S202 can also include：
Each location information of the data receiver in group data receiver frame.
Specifically, when data both ends are when the transmission of data is carried out by the way of wave beam forming, the confirmation request message frame
In further include location information or Position Number of each data receiver in group data receiver frame, such as location information
" 00000001 " represents the data receiver as first data receiver in group, and location information " 00000011 " represents the data
Receiving terminal is the 3rd data receiver, etc. in group.
It should be noted that time synchronization information (or clock offset information) is in order to which data is allowed to connect in the embodiment of the present invention
Receiving end can be simultaneously reply confirmation message frame to the data sending terminal, which can be wide with data sending terminal institute
The information for broadcasting beacon frame is consistent；
It is asked it should also be noted that, the confirmation request message frame in the embodiment of the present invention can include but is not limited to block confirmation
Seek message frame (Block ACK Request, BAR).
Below correspondingly, the flow of another embodiment of the wireless communications method provided by the invention with reference to shown in Fig. 3 is shown
It is intended to, describes technical scheme from data receiver, this method includes：
Step S300：Receive the confirmation request message frame that data sending terminal is sent；The confirmation request message frame includes number
According to the quantity information of receiving terminal, time synchronization information；The time synchronization information be used to indicate multiple data receivers simultaneously to
The data sending terminal returns to confirmation message frame；
Specifically, after which receives the data frame of data sending terminal transmission, the data sending is also received
The confirmation request message frame sent is held, the structure of the confirmation request message frame specifically may be referred to the description of above-mentioned Fig. 2 embodiments,
Which is not described herein again.
Step S302：According to the confirmation request message frame, confirmation message frame is generated；The confirmation message frame includes basis
The long training field domain quantity information of the quantity information generation of the data receiver；
Specifically, which parses the confirmation request message frame, obtains the data in the confirmation request message frame
The quantity information and time synchronization information of receiving terminal, and the long training field domain generated according to the quantity information of the data receiver
The number of LTF quantity informations, i.e. LTF, wherein including the LTF numbers in the confirmation message frame generated according to the confirmation request message frame
Measure information.For example, the quantity information of the data receiver in the confirmation request message frame is 3 data receivers, then generation
Confirm the number comprising 3 LTF in message frame.
Step S304：Other data receivers in the time synchronization information, with the multiple data receiver
It is synchronous to send the confirmation message frame.
Specifically, which realizes send out synchronous with other multiple data receivers according to the time synchronization information
Send the confirmation message frame generated in step S302.
Further, the long training field domain quantity information in the embodiment of the present invention can include the long training of high efficiency compatibility
The quantity of field domain.Physical layer preamble code (the PHY of specific confirmation message frame provided in an embodiment of the present invention as shown in Figure 4
Preamble form schematic diagram), to parse the quantity information of the data receiver in confirmation request message frame as 2 data
Exemplified by receiving terminal, then be compatible with long training field domain (High comprising 2 high efficiency in the confirmation message frame of data receiver generation
Efficiency-Long Training Field, He-LTF), in addition, the confirmation message frame can also be short including backward compatibility
Training field domain (Legacy-Short Training Field, L-STF), backward compatibility long training field domain (Legacy-
LongTraining Field, L-LTF), backward compatibility signal domain (Legacy-Signal, L-SIG), physical layer assembles program
Service data unit (Physical Layer Convergence Procedure Service Data Unit, PSDU).
It will be appreciated that the PHY Preamble forms that the embodiment of the present invention is not limited to confirmation message frame shown in Fig. 4 show
It is intended to, as long as including the long training field domain quantity letter generated according to the quantity information of the data receiver in the confirmation message frame
Breath.
Yet further, when data communication both sides send data in a manner of Orthogonal Frequency Division Multiple Access, the confirmation request message
Frame further includes to be used to indicate when the multiple data receiver returns to confirmation message frame realizes synchronous frequency offset in frequency
Information；So step S304 can be specifically included：It is and described according to the time synchronization information and the frequency offset information
Other data receivers in multiple data receivers synchronously send the confirmation message frame on time and frequency.
Yet further, the principle schematic that confirmation message frame provided in an embodiment of the present invention as shown in Figure 5 is replied, this
Data receiver in invention can be site apparatus, and data sending terminal can be access point apparatus, and site apparatus 1, website are set
After the data frame that access point apparatus transmission is received for 2 and site apparatus 3, access point apparatus hair is received after a SIFS
The confirmation request message frame provided in an embodiment of the present invention sent, then using site apparatus 1, site apparatus 2 after a SIFS
With site apparatus 3 synchronously confirmation message frame is replied to the access point apparatus.
By implementing the embodiment of the present invention, the quantity information and time synchronization information of data receiver are included by generation
Confirmation request message frame, and be sent to data receiver；Data of the data receiver in the confirmation request message frame connect
The long training field domain quantity information of the quantity information generation of receiving end, and ultimately generate confirmation message frame and other data receivers
It is synchronous to send confirmation message frame, the signaling consumption in Polled ACK mechanism in prior art 802.11ac can be effectively reduced,
And the confirmation message frame that can be adapted for using OFDMA technologies being carried out data transmission in 802.11ax is replied, and is greatly improved
System spectrum utilization rate and gain.
The above-mentioned method for illustrating the embodiment of the present invention, following for convenient for preferably implementing the embodiment of the present invention
Said program correspondingly, is also provided below to coordinate the relevant device for implementing said program.
The structure diagram of wireless transmission device provided by the invention as shown in Figure 6, wireless transmission device 60 are method
The corresponding data sending terminal of item embodiment, wireless transmission device 60 can include data frame sending module 600, confirmation request generates
Module 602 and confirmation request sending module 604, wherein
Data frame sending module 600 is used to send data frame to multiple data receivers；
Confirmation request generation module 602 is used to generate confirmation request message frame；The confirmation request message frame includes described
The quantity information of data receiver, time synchronization information；The time synchronization information is used to indicate the multiple data receiver
Confirmation message frame is returned to the data sending terminal simultaneously, the quantity information of the data receiver is used to indicate the multiple
The number in long training field domain in data receiver generation confirmation message frame；
Confirmation request sending module 604 is used to send the confirmation request message frame to the data receiver.
Specifically, when sending data using Orthogonal Frequency Division Multiple Access mode, the confirmation request message frame further includes：For
It indicates to realize synchronous frequency offset information in frequency when the multiple data receiver returns to confirmation message frame；
When sending data using multiuser mode, the confirmation request message frame further includes：Each data receiver exists
Location information in group data receiver frame.
Further, the frequency offset information in the embodiment of the present invention includes the data sending terminal and the multiple data
The average value of the frequency offset value of receiving terminal.
Wireless transmission device 60 in the embodiment of the present invention for example can be Network Management Equipment, router, transmission node, intelligence
Mobile terminal or other network equipments.
It will be appreciated that the function of each function module of the wireless transmission device 60 of the present embodiment can be real according to the above method
The method specific implementation in example is applied, details are not described herein again.
The above-mentioned wireless transmission device 60 for illustrating the embodiment of the present invention, following for convenient for preferably implementing this hair
Correspondingly, a kind of radio receiver is also provided below in the said program of bright embodiment；
The structure diagram of radio receiver provided by the invention as shown in Figure 7, radio receiver 70 are method
The corresponding data receiver of item embodiment, radio receiver 70 can include：Confirmation request receiving module 700, confirmation message
Frame generation module 702 and synchronous sending module 704, wherein
Confirmation request receiving module 700 is used to receive the confirmation request message frame of data sending terminal transmission；The confirmation please
Message frame is asked to include the quantity information of data receiver, time synchronization information；The time synchronization information is used to indicate multiple numbers
According to receiving terminal confirmation message frame is returned to the data sending terminal simultaneously；
Confirmation message frame generation module 702 is used to, according to the confirmation request message frame, generate confirmation message frame；It is described true
Recognizing message frame includes the long training field domain quantity information generated according to the quantity information of the data receiver；
Synchronous sending module 704 is for other in the time synchronization information, with the multiple data receiver
Data receiver synchronously sends the confirmation message frame.
Specifically, the long training field domain quantity information in the embodiment of the present invention includes high efficiency compatibility long training field domain
Quantity.
Further, when Orthogonal Frequency Division Multiple Access mode sends data, the confirmation request message frame further includes to refer to
Show and synchronous frequency offset information is realized in frequency when the multiple data receiver returns to confirmation message frame；
Synchronous sending module 704 is specifically used for according to the time synchronization information and the frequency offset information, with institute
It states other data receivers in multiple data receivers and the confirmation message frame is synchronously sent on time and frequency.
The radio receiver 70 of the embodiment of the present invention for example can be tablet computer, personal digital assistant, intelligent mobile
Terminal or other network equipments.
It will be appreciated that the function of each function module of the radio receiver 70 of the present embodiment can be real according to the above method
The method specific implementation in example is applied, details are not described herein again.
For the ease of preferably implementing the said program of the embodiment of the present invention, the present invention also provides implement for coordinating
State the related system of scheme.With reference to the structure diagram of the wireless communication system provided by the invention shown in Fig. 8, carry out detailed
It describes in detail bright：
Wireless communication system 80 includes data sending device 800 and data sink 802, wherein
Data sending device 800 includes the wireless transmission device 60 in above-described embodiment, and which is not described herein again；
Data sink 802 includes the radio receiver 70 in above-described embodiment, and which is not described herein again.
In conclusion by implementing the embodiment of the present invention, the quantity information of data receiver is included with timely by generation
Between synchronizing information confirmation request message frame, and be sent to data receiver；Data receiver is according to the confirmation request message frame
In data receiver quantity information generation long training field domain quantity information, and ultimately generate confirmation message frame and other
Data receiver synchronously sends confirmation message frame, can effectively reduce in prior art 802.11ac in Polled ACK mechanism
Signaling consumption, and the confirmation message frame that can be adapted for using OFDMA technologies being carried out data transmission in 802.11ax is replied,
Greatly improve system spectrum utilization rate and gain.
One of ordinary skill in the art will appreciate that realizing all or part of flow in above-described embodiment method, being can be with
Relevant hardware is instructed to complete by computer program, the program can be stored in a computer read/write memory medium
In, the program is upon execution, it may include such as the flow of the embodiment of above-mentioned each method.Wherein, the storage medium can be magnetic
Dish, CD, read-only memory (Read-Only Memory, ROM) or random access memory (Random Access
Memory, RAM) etc..
The above disclosed power for being only a kind of preferred embodiment of the present invention, the present invention cannot being limited with this certainly
Sharp scope one of ordinary skill in the art will appreciate that realizing all or part of flow of above-described embodiment, and is weighed according to the present invention
Profit requires made equivalent variations, still falls within and invents covered scope.
Claims (8)
1. a kind of wireless communications method, which is characterized in that including：
Data sending terminal sends data frame to multiple data receivers；
Generate confirmation request message frame；Quantity information of the confirmation request message frame including the data receiver, time are same
Walk information；The time synchronization information, which is used to indicate the multiple data receiver and is returned simultaneously to the data sending terminal, to be confirmed
Message frame, the quantity information of the data receiver are used to indicate length in the multiple data receiver generation confirmation message frame
The number in training field domain；
The confirmation request message frame is sent to the data receiver；
When sending data using Orthogonal Frequency Division Multiple Access mode, the confirmation request message frame further includes：It is used to indicate described more
A data receiver realizes synchronous frequency offset information when returning to confirmation message frame in frequency；
When sending data using multiuser mode, the confirmation request message frame further includes：Each data receiver is in a group number
According to the location information in receiving frame.
2. the method as described in claim 1, which is characterized in that the frequency offset information includes the data sending terminal and institute
State the average value of the frequency offset value of multiple data receivers.
3. a kind of wireless communications method, which is characterized in that including：
Receive the confirmation request message frame that data sending terminal is sent；The confirmation request message frame includes the quantity of data receiver
Information, time synchronization information；The time synchronization information is used to indicate multiple data receivers simultaneously to the data sending terminal
Return to confirmation message frame；
According to the confirmation request message frame, confirmation message frame is generated；The confirmation message frame is included according to the data receiver
The long training field domain quantity information of the quantity information generation at end；
According to the time synchronization information, transmission synchronous with other data receivers in the multiple data receiver is described really
Recognize message frame；
When using Orthogonal Frequency Division Multiple Access mode send data when, the confirmation request message frame further include be used to indicate it is the multiple
Data receiver realizes synchronous frequency offset information when returning to confirmation message frame in frequency；
It is described according to the time synchronization information, transmission institute synchronous with other data receivers in the multiple data receiver
Stating confirmation message frame includes：
According to other data in the time synchronization information and the frequency offset information, with the multiple data receiver
Receiving terminal synchronously sends the confirmation message frame on time and frequency.
4. method as claimed in claim 3, which is characterized in that long training field domain quantity information is compatible with including high efficiency
The quantity in long training field domain.
5. a kind of wireless transmission device, which is characterized in that including：
Data frame sending module, for sending data frame to multiple data receivers；
Confirmation request generation module, for generating confirmation request message frame；The confirmation request message frame connects including the data
The quantity information of receiving end, time synchronization information；The time synchronization information be used to indicate the multiple data receiver simultaneously to
The data sending terminal returns to confirmation message frame, and the quantity information of the data receiver is used to indicate the multiple data and connects
The number in long training field domain in receiving end generation confirmation message frame；
Confirmation request sending module, for sending the confirmation request message frame to the data receiver；
When sending data using Orthogonal Frequency Division Multiple Access mode, the confirmation request message frame further includes：It is used to indicate described more
A data receiver realizes synchronous frequency offset information when returning to confirmation message frame in frequency；
When sending data using multiuser mode, the confirmation request message frame further includes：Each data receiver is in a group number
According to the location information in receiving frame.
6. equipment as claimed in claim 5, which is characterized in that the frequency offset information includes the data sending terminal and institute
State the average value of the frequency offset value of multiple data receivers.
7. a kind of radio receiver, which is characterized in that including：
Confirmation request receiving module, for receiving the confirmation request message frame of data sending terminal transmission；The confirmation request message
Frame includes the quantity information of data receiver, time synchronization information；The time synchronization information is used to indicate multiple data receivers
End returns to confirmation message frame to the data sending terminal simultaneously；
Confirmation message frame generation module, for according to the confirmation request message frame, generating confirmation message frame；The confirmation message
Frame includes the long training field domain quantity information generated according to the quantity information of the data receiver；
Synchronous sending module connects for other data in the time synchronization information, with the multiple data receiver
Receiving end synchronously sends the confirmation message frame；
When using Orthogonal Frequency Division Multiple Access mode send data when, the confirmation request message frame further include be used to indicate it is the multiple
Data receiver realizes synchronous frequency offset information when returning to confirmation message frame in frequency；
The synchronization sending module is specifically used for according to the time synchronization information and the frequency offset information, and described more
Other data receivers in a data receiver synchronously send the confirmation message frame on time and frequency.
8. equipment as claimed in claim 7, which is characterized in that long training field domain quantity information is compatible with including high efficiency
The quantity in long training field domain.
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| CN201510256486.XA CN105099626B (en) | 2015-05-18 | 2015-05-18 | A kind of wireless communications method and relevant device |
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| CN201510256486.XA CN105099626B (en) | 2015-05-18 | 2015-05-18 | A kind of wireless communications method and relevant device |
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| CN105099626B true CN105099626B (en) | 2018-05-25 |
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| IEEE 802.11 11-14-0818 Synchronization Requirements;Yonggang Fang et al;《IEEE 802.11》;20140714;全文 * |
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