CN107046730A - A kind of data transmission method and device - Google Patents
A kind of data transmission method and device Download PDFInfo
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- CN107046730A CN107046730A CN201610082704.7A CN201610082704A CN107046730A CN 107046730 A CN107046730 A CN 107046730A CN 201610082704 A CN201610082704 A CN 201610082704A CN 107046730 A CN107046730 A CN 107046730A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 82
- 238000000034 method Methods 0.000 title claims abstract description 40
- 230000004044 response Effects 0.000 claims abstract description 27
- 238000004891 communication Methods 0.000 claims abstract description 10
- 238000005259 measurement Methods 0.000 claims description 78
- 238000012790 confirmation Methods 0.000 claims description 7
- 239000012141 concentrate Substances 0.000 claims description 5
- 230000004224 protection Effects 0.000 abstract description 7
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0808—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]
- H04W74/0816—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA] with collision avoidance
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
-
- 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]
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Abstract
The present invention discloses a kind of data transmission method and device, and this method includes：First website sends threshold parameter collection to the second website, wherein, the threshold parameter collection carries the relevant information for notifying the second website to send channel reservation request frame；First website receives the channel reservation request frame that the second website is sent；First website sends the corresponding response frame of the channel reservation request frame to the second website；First website receives the data frame that the second website is sent.By such scheme, the first website can flexibly control whether website opens RTS protections according to channel busy and channel quality, and flexibly set RTS threshold sizes, can be prevented effectively from collision on the premise of certain communication efficiency is ensured.
Description
Technical field
The present invention relates to data communication field, espespecially a kind of data transmission method and device.
Background technology
At present, as more people using WLAN enter row data communication, wlan network is supported on not
It is disconnected to aggravate.Particularly under dense deployment scene, with access point (access point, abbreviation AP) number
Amount increases with non-access point website (non-AP Station, abbreviation non-AP STA) number, substantially
Services set overlaps (Overlap basic service set, abbreviation OBSS) situation seriously, and disturbed condition is multiple
Miscellaneous, the trend being decreased obviously occurs in the efficiency of wlan network.
An inevitable problem is to hide website in wlan network.As shown in Figure 1A.Website A
Data are sent to website B, while website C also sends data to website B, due to C and A each other all
Outside coverage in other side, A and C send and will led to a conflict simultaneously, cause B correctly to connect
Receive data.A and C hide website each other.
In order to avoid OBSS interference, and solve to hide station problem, 802.11 have protection mechanism,
Before sending data frame, receiving-transmitting sides first interaction send channel reservation request frame (Request to send,
RTS) and channel booking response frame (Clear to send, CTS), to carry out channel booking.Figure 1B is
RTS and CTS Frame switch schematic diagrames, with reference to shown in Figure 1B, the specific practice of channel booking is：Send
Side sends RTS frames, wherein comprising a time-domain (channel booking time), showing that sender completes frame
Exchange the time span needed；Recipient responds CTS frames, wherein also comprising a time-domain, to ensure
Sender can complete Frame switch.Other websites of auditing for listening to the RTS/CTS set a network point
With vector (Network Allocation Vector, NAV), NAV value is set to above-mentioned two
Maximum in time-domain；Within the time, data will not be sent by auditing website, so as to avoid causing hidden
Hide node competitive channel, cause the situation of collision to occur.NAV successively decreases with time slot, and NAV is kept to zero
Afterwards, other websites could send data.
RTS and CTS frame length is shorter, therefore before data frame is sent, website can first send RTS,
If having successfully received CTS, then it represents that channel conditions are good, and are subscribed to channel, then continue to send number
According to, if not having successfully received RTS, show to collide, or channel status is not good.Use
The expense that RTS/CTS carries out channel detection is small, reaction is fast, it is to avoid directly transmit long data frame but generation
Collide the waste of the channel resource caused.
In the prior art, RTS is not all sent before the transmission of any data, but website sets one
RTS threshold values, when data frame length exceedes this threshold value, are just first carried out before data frame transmission
RTS/CTS shakes hands.RTS threshold values are voluntarily set by website, under intensive scene environment, if website is certainly
It is about to the very high of RTS threshold values setting, then does not send RTS before the transmission of all data, it is possible to
More collision is caused, therefore, has scheme to propose to control whether all association websites open RTS by AP,
If AP orders are opened, all association websites will send RTS before data frame is sent.However,
The shortcoming of this scheme is that flexibility ratio is not high, and the scene of short frame, enforced opening RTS are sent for website
Certain expense, channel transport efficiency reduction can be caused.
The content of the invention
In order to solve the above problems, the present invention proposes a kind of data transmission device method and apparatus, can
Improve the reliability of the data transfer between mobile terminal.
In order to achieve the above object, the present invention proposes a kind of data transmission method, and methods described includes：
First website sends threshold parameter collection to the second website, wherein, the threshold parameter collection carries logical
Know that the second website sends the relevant information of channel reservation request frame；
First website receives the channel reservation request frame that the second website is sent；
First website sends the corresponding response frame of the channel reservation request frame to the second website；
First website receives the data frame that the second website is sent.
Preferably, the threshold parameter, which is concentrated, includes any one of following information：
Channel booking configured information；Wherein, the channel booking configured information is used to indicate the second station
Whether point sends the channel reservation request frame；
Channel booking configured information and first area information aggregate；
Channel booking configured information and the first QoS class sets.
Preferably, the threshold parameter, which is concentrated, includes at least one of following content：
Second website to first website send channel reservation request frame when threshold value；
The corresponding relation of area information and threshold value；
The QoS grades and the corresponding relation of threshold value of data frame.
Preferably, the area information includes at least one of following information：
Sector belonging to second website；
Wireless signal measurement parameter.
Preferably, the wireless signal measurement parameter includes at least one in following data：
Second website receives receiving power when the first website sends signal；
The received signal strength indicator RSSI of second website；
Using the transmit power of the transmit power of the first website, the RSSI of the second website and the second website as
The functional relation of parameter；
The Packet Error Ratio of second website within a predetermined period of time.
Preferably, the threshold parameter is concentrated and also included：
Effective time length；Wherein, the effective time length is used to notify the second website described effective
Need to perform channel booking before data frame is sent in time span.
Preferably, the unit of the threshold value is byte, or transmission time length.
Preferably, first website is access point, or, it is to carry out direct-connected lead to the second station point
The website of letter.
In order to achieve the above object, the invention also provides a kind of data transmission method, methods described includes：
Second website receives the threshold parameter collection that the first website is sent；
When needing to send data frame, the information carried according to threshold parameter collection sends channel reservation request
Frame；
After the corresponding response frame of the channel reservation request frame is received, the data frame is sent.
Preferably, before the information carried according to threshold parameter collection, transmission channel reservation request frame,
The data transmission method also includes：
The information carried according to threshold parameter collection, is confirmed whether to need to perform channel booking；
When confirming to need to perform channel booking, when the length of data frame is more than threshold value, perform described
The step of sending channel reservation request frame；When data frame length is less than threshold value, the transmission institute is performed
The step of stating data frame；
When confirming that channel booking need not be performed, the step of performing the transmission data frame.
Preferably, the information carried according to threshold parameter collection, is confirmed whether to need to perform channel booking
Any execution as follows：
Mode one：
The channel booking configured information carried according to threshold parameter collection is confirmed whether to need to perform channel booking；
Wherein, the channel booking configured information is used to indicate whether second website sends the channel booking
Claim frame；
Indicate that second website sends the channel reservation request frame in the channel booking configured information
When, confirm as needing to perform channel booking；Second website is indicated in the channel booking configured information
When not sending the channel reservation request frame, confirm as that channel booking need not be performed；
Mode two：
The channel booking configured information and first area information aggregate carried according to threshold parameter collection is confirmed whether
Need to perform channel booking；
The channel booking configured information indicate second website send the channel reservation request frame,
And when the area information of the second website belongs to the first area information aggregate, confirm as needing to perform letter
Road is preengage；Otherwise, confirm as that channel booking need not be performed；
Mode three：
The channel booking configured information and the first QoS class sets carried according to threshold parameter collection confirms
It is no to need to perform channel booking；
The channel booking configured information indicate second website send the channel reservation request frame,
And when the QoS grades of data frame to be sent belong to the first QoS class sets, confirm as needing
Perform channel booking；Otherwise, confirm as that channel booking need not be performed.
Preferably, before the transmission channel reservation request frame, the data transmission method also includes：
Second website obtains the corresponding threshold value of the second website according to threshold parameter collection.
Preferably, the threshold parameter is concentrated and included：It is pre- that second website sends channel to first website
About claim frame when threshold value；
It is described according to threshold parameter collection, obtaining the corresponding threshold value of the second website includes：
Read threshold parameter concentrate the threshold value, and using the threshold value of reading as the second website door
Limit value.
Preferably, the threshold parameter, which is concentrated, includes area information and the corresponding relation of threshold value；
The area information includes at least one of following information：
Sector belonging to second website；
Wireless signal measurement parameter；
It is described according to threshold parameter collection in the case of the sector that area information is included belonging to the second website,
Obtaining the corresponding threshold value of the second website includes：
The corresponding relation of sector and each sector and threshold value according to belonging to the second website, obtains the
The corresponding threshold value of two websites；
It is described according to threshold parameter collection in the case where area information includes wireless signal measurement parameter, obtain
The corresponding threshold value of the second website is taken to include：
According to the corresponding wireless signal measurement parameter of the second website and wireless signal measurement parameter and thresholding
The corresponding relation of value, obtains the corresponding threshold value of the second website；
In the case of sector and the wireless signal measurement parameter that area information is included belonging to the second website, institute
State according to threshold parameter collection, obtaining the corresponding threshold value of the second website includes：
Surveyed according to the corresponding sector of the second website and wireless signal measurement parameter and sector, wireless signal
The corresponding relation of parameter and threshold value is measured, the corresponding threshold value of the second website is obtained.
Preferably, the threshold parameter, which is concentrated, includes the corresponding relation of QoS grades and threshold value；
It is described according to door in the case of the corresponding relation that threshold parameter collection includes QoS grades and threshold value
Parameter set is limited, obtaining the corresponding threshold value of the second website includes：
According to the corresponding relation of the corresponding QoS grades of the second website and QoS grades and threshold value,
Obtain the corresponding threshold value of the second website.
Preferably, the wireless signal measurement parameter includes at least one in following data：
Second website receives receiving power when the first website sends signal；
The corresponding received signal strength indicator RSSI of second website；
Using the transmit power of the transmit power of the first website, the RSSI of the second website and the second website as
The functional relation of parameter；
The Packet Error Ratio of second website within a predetermined period of time.
Preferably, the threshold parameter, which is concentrated, also includes effective time span；Wherein, for described effective
Time span, the second website is since the radio frames for carrying the threshold parameter collection receive finish time
Timing；
In the effective time length, the information that the second website is carried according to threshold parameter collection is being sent
Channel booking is performed before data frame.
Preferably, second website is website of the association to first website, or, described second
Website is the website that direct-connected communication is carried out with the first stop point.
In order to achieve the above object, the invention also provides a kind of data transmission device, it is arranged on access point
On website AP, described device includes：
Threshold parameter collection transmitting element, for sending threshold parameter collection, wherein, the threshold parameter collection is taken
The relevant information of channel reservation request frame is sent with the second website is notified；
Receiving unit, for receiving the channel reservation request frame that the second website is sent；
Response frame transmitting element, for sending the corresponding response frame of the channel reservation request frame；
The receiving unit is additionally operable to receive the data frame that the second website is sent.
Preferably, the threshold parameter that the threshold parameter collection transmitting element is sent, which is concentrated, to be included in following information
Any one：
Channel booking configured information；Wherein, the channel booking configured information is used to indicate the second station
Whether point sends the channel reservation request frame；
Channel booking configured information and first area information aggregate；
Channel booking configured information and the first QoS class sets.
Preferably, the threshold parameter that the threshold parameter collection transmitting element is sent, which is concentrated, includes following content
At least one of：
Second website to first website send channel reservation request frame when threshold value；
The corresponding relation of area information and threshold value；
The QoS grades and the corresponding relation of threshold value of data frame.
Preferably, the area information includes at least one of following information：
Sector belonging to second website；
Wireless signal measurement parameter.
Preferably, the threshold parameter that the threshold parameter collection transmitting element is sent, which is concentrated, also to be included：
Effective time length；Wherein, the effective time length is used to notify the second website described effective
Need to perform channel booking before data frame is sent in time span.
Preferably, the wireless signal measurement parameter includes at least one in following data：
Second website receives receiving power when the first website sends signal；
The received signal strength indicator RSSI of second website；
Using the transmit power of the transmit power of the first website, the RSSI of the second website and the second website as
The functional relation of parameter；
The Packet Error Ratio of second website within a predetermined period of time.
In order to achieve the above object, the invention also provides a kind of data transmission device, it is arranged on non-access
In point site STA, described device includes：
Threshold parameter collection receiving unit, for receiving the threshold parameter collection that the first website is sent；
Channel booking unit, for when needing to send data frame, according to the information of threshold parameter collection carrying,
Send channel reservation request frame；
Data frame transmitting element, for after the corresponding response frame of the channel reservation request frame is received,
Send the data frame.
Preferably, the channel booking unit includes threshold value judge module, reserve requests frame sending module,
And response frame receiving module；
The threshold value judge module is used to judge whether the length of data frame to be more than threshold value；
The reserve requests frame sending module is used to, when the length of data frame is more than threshold value, send channel
Reserve requests frame；
The response frame receiving module is used to receive the corresponding sound of channel reservation request frame that the first website is sent
Answer frame；
The data transmission device also includes：
Channel booking confirmation unit, for the information carried according to threshold parameter collection, is confirmed whether that needs are held
Row channel booking；When confirming to need to perform channel booking, channel booking unit is notified to perform channel booking；
When confirming that channel booking need not be performed, data frame transmitting element is notified to send the data frame.
Preferably, the channel booking confirmation unit includes at least one in following module：
First confirms module, and the channel booking configured information for being carried according to threshold parameter collection is confirmed whether
Need to perform channel booking；Wherein, the channel booking configured information is used to indicate that second website is
It is no to send the channel reservation request frame；
Indicate that second website sends the channel reservation request frame in the channel booking configured information
When, confirm as needing to perform channel booking；Second website is indicated in the channel booking configured information
When not sending the channel reservation request frame, confirm as that channel booking need not be performed；
Second confirms module, for the channel booking configured information carried according to threshold parameter collection and the firstth area
Domain information set is confirmed whether to need to perform channel booking；
The channel booking configured information indicate second website send the channel reservation request frame,
And when the area information of the second website belongs to the first area information aggregate, confirm as needing to perform letter
Road is preengage；Otherwise, confirm as that channel booking need not be performed；
3rd confirms module, for the channel booking configured information and first carried according to threshold parameter collection
QoS class sets are confirmed whether to need to perform channel booking；
The channel booking configured information indicate second website send the channel reservation request frame,
And when the QoS grades of data frame to be sent belong to the first QoS class sets, confirm as needing
Perform channel booking；Otherwise, confirm as that channel booking need not be performed.
Preferably, the channel booking unit also includes：
Threshold value acquisition module, for according to threshold parameter collection, obtaining the corresponding threshold value of the second website.
Preferably, the threshold parameter is concentrated and included：It is pre- that second website sends channel to first website
About claim frame when threshold value；
The threshold value acquisition module includes：
First threshold value acquisition submodule, the threshold value for reading threshold parameter concentration, and will read
The threshold value taken as the second website threshold value.
Preferably, the threshold parameter, which is concentrated, includes area information and the corresponding relation of threshold value；
The threshold value acquisition module includes：
Second threshold value acquisition submodule, for the area information concentrated according to threshold parameter and threshold value
The area information of corresponding relation and the second website, obtains the threshold value of the second website；
The area information includes at least one of following information：
Sector belonging to second website；
Wireless signal measurement parameter；
In the case of the sector that area information is included belonging to the second website, second threshold value obtains son
Module is used for the sector according to belonging to the second website and the corresponding relation of each sector and threshold value, obtains
Take the corresponding threshold value of the second website；
In the case where area information includes wireless signal measurement parameter, second threshold value is obtained
Submodule is used for according to the corresponding wireless signal measurement parameter of the second website and wireless signal measurement parameter
With the corresponding relation of threshold value, the corresponding threshold value of the second website is obtained；
In the case of sector and the wireless signal measurement parameter that area information is included belonging to the second website, institute
Stating the second threshold value acquisition submodule is used to be joined according to the corresponding sector of the second website and wireless signal measurement
Number and the corresponding relation of sector, wireless signal measurement parameter and threshold value, obtain the second website correspondence
Threshold value.
Preferably, the threshold parameter, which is concentrated, includes the corresponding relation of QoS grades and threshold value；
The threshold value acquisition module includes：
3rd threshold value acquisition submodule, for according to the corresponding QoS grades of the second website and QoS
The corresponding relation of grade and threshold value, obtains the corresponding threshold value of the second website.
Preferably, the wireless signal measurement parameter includes at least one in following data：
Second website receives receiving power when the first website sends signal；
The corresponding received signal strength indicator RSSI of second website；
Using the transmit power of the transmit power of the first website, the RSSI of the second website and the second website as
The functional relation of parameter；
The Packet Error Ratio of second website within a predetermined period of time.
Preferably, the threshold parameter, which is concentrated, also includes effective time span；Wherein,
The channel booking unit also includes timing module, for for the effective time length, from institute
State carry the threshold parameter collection radio frames receive finish time start timing；So that channel booking unit
In the effective time length, the information carried according to threshold parameter collection is held before data frame is sent
Row channel booking.
Compared with prior art, the technical scheme that the present invention is provided includes：First website is sent out to the second website
Threshold parameter collection is sent, wherein, the threshold parameter collection, which is carried, notifies the second website sends channel booking please
Seek the relevant information of frame；First website receives the channel reservation request frame that the second website is sent；First website
The corresponding response frame of the channel reservation request frame is sent to the second website；First website receives the second website
The data frame of transmission.By the solution of the present invention, the first website can be according to channel busy and channel quality
Flexibly whether control website opens RTS protections, and flexibly sets RTS threshold sizes, can protect
Collision is prevented effectively from the premise of the certain communication efficiency of card.
Brief description of the drawings
The accompanying drawing in the embodiment of the present invention is illustrated below, the accompanying drawing in embodiment is used for this hair
Bright further understands, and is used to explain the present invention together with specification, does not constitute to present invention protection model
The limitation enclosed.
Figure 1A is to hide website schematic diagram；
Figure 1B is RTS and CTS Frame switch schematic diagrames；
Fig. 2 is the flow chart of data transmission method provided in an embodiment of the present invention；
Fig. 3 A, Fig. 3 B, Fig. 3 C and Fig. 3 D are respectively acquisition threshold value provided in an embodiment of the present invention
Schematic diagram；
Fig. 4 and Fig. 5 are respectively the structure composition schematic diagram of data transmission device provided in an embodiment of the present invention.
Embodiment
For the ease of the understanding of those skilled in the art, present invention work is further retouched below in conjunction with the accompanying drawings
State, can not be used for limiting the scope of the invention.It should be noted that in the case where not conflicting,
The various modes in embodiment and embodiment in the application can be mutually combined.
Referring to Fig. 2, the present invention proposes a kind of data transmission method, and methods described includes：
Step 110, the first website sends threshold parameter collection to the second website；
Step 120, the second website obtains the corresponding threshold value of the second website according to threshold parameter collection；
Step 140, the second website performs channel booking when needing to send data frame.
Step 140 is specifically included：
Step 141, the second website judges the length of data frame when needing to send data frame to the first website
Whether degree is more than the corresponding threshold value of the second website；If it is, performing step 142, otherwise, step is performed
Rapid 150.
Step 142, when the length of data frame is more than the threshold value, channel reservation request frame is sent,
Step 143, the second website receives the corresponding acknowledgement frame of the channel reservation request frame.
Receive the corresponding acknowledgement frame of channel reservation request frame of the first station replies, illustrate channel booking into
Work(.
Step 150, the second website sends data frame to the first website.
Preferably, before step 140, in addition to：
Step 130, the information carried according to threshold parameter collection, is confirmed whether to need to perform channel booking；
When confirming to need to perform channel booking, step 140 is performed；When data frame length is less than threshold value
When, the step of performing the transmission data frame；
When confirming that channel booking need not be performed, step 150 is performed.
Wherein, any execution of step 130 as follows：
Mode one：
The channel booking configured information carried according to threshold parameter collection is confirmed whether to need to perform channel booking；
Wherein, the channel booking configured information is used to indicate whether second website sends the channel booking
Claim frame；
Indicate that second website sends the channel reservation request frame in the channel booking configured information
When, confirm as needing to perform channel booking；Second website is indicated in the channel booking configured information
When not sending the channel reservation request frame, confirm as that channel booking need not be performed；
Mode two：
The channel booking configured information and first area information aggregate carried according to threshold parameter collection is confirmed whether
Need to perform channel booking；
The channel booking configured information indicate second website send the channel reservation request frame,
And when the area information of the second website belongs to the first area information aggregate, confirm as needing to perform letter
Road is preengage；Otherwise, confirm as that channel booking need not be performed；
Mode three：
The channel booking configured information and the first QoS class sets carried according to threshold parameter collection confirms
It is no to need to perform channel booking；
The channel booking configured information indicate second website send the channel reservation request frame,
And when the QoS grades of data frame to be sent belong to the first QoS class sets, confirm as needing
Perform channel booking；Otherwise, confirm as that channel booking need not be performed.
First website can use the mode of unicast, multicast, or broadcast that threshold parameter collection is sent into the
Two websites, specifically, transmission can be the cycle, or triggered based on event, or base
In the request of the second website.
Second website, will be according to threshold parameter collection after the threshold parameter collection of the first website transmission is received
Whether the validation of information of carrying needs to perform channel booking, and determines the size of threshold value, is needing every time
When sending data frame, it is not necessary to which whether need perform channel booking, it is not required that again true if reaffirming
The size of threshold value is determined, in the case where needing to perform channel booking, it is only necessary to judge number according to threshold value
Whether it is more than the threshold value according to the length of frame.
Or, second station point is received after threshold parameter collection, due to the change of self geographical position, or
The change of wireless environment around itself, the validation of information periodically or non-periodically carried according to threshold parameter collection
Oneself whether need to perform channel booking, and confirm the size of threshold value.Second website can not enter
The idle moment of row transmitting-receiving carries out this operation, or carries out this operation before each transmission data frame.
Embodiment one
In the embodiment of the present invention, using the first website as AP, the second website is the non-access station associated with AP
Illustrated exemplified by point non-AP STA (abbreviation STA).AP is in the system message Beacon oneself sent
In frame, or in Probe Response frames, threshold parameter collection is sent to the STA associated with oneself.
In the embodiment of the present invention, threshold parameter, which is concentrated, includes area information and the corresponding relation of threshold value.
It should be noted that the unit of threshold value can be represented using byte, it would however also be possible to employ transmission time is long
Spend to represent.Before step 110, AP is configured to the corresponding relation of area information and threshold value.
In the present embodiment, area information refers to the sector belonging to STA.As shown in Figure 3A.How sector divides
Belong to prior art, generally for a BSS, AP can be right according to the coverage of directional aerial
BSS carries out sector division, then the STA associated with AP belongs to a certain sector.Or, AP according to
Its STA associated website location distribution, some sectors are divided into by whole BSS.Each fan
The threshold value for the transmission RTS frames that area is set can be with identical or different.Sector auxiliary information belonging to STA is by AP
Given advance notice with signaling method, or STA confirms oneself institute by channel detection (sounding) process
Sector position.
It is exemplary threshold parameter collection referring to table 1.
| Sector | RTS threshold value (units：Byte) |
| Sector 1 | 1500 |
| Sector 2 | 1500 |
| Sector 3 | 1000 |
| … | … |
Table 1 be area information be sector threshold parameter collection example table
If the RTS threshold values of certain sector are set to very small by AP, or 0 is set to, then it represents that should
STA in sector always first sends RTS frames before data frame is sent to AP, if by RTS thresholdings
Value is set to very big, then it represents that STA need not send RTS frames before data frame is sent to AP.
AP can be according to the threshold value of the reception condition neatly each sector of separate configurations, for example, when certain
When the data transmission success of individual sector is higher, RTS threshold values are set to larger value, because, certain
The probability of the higher explanation collision of data transmission success of individual sector is smaller, therefore, it can RTS thresholdings
Value is set to larger value, reduces the expense that the transmission of RTS frames is brought.When the data of some sector are passed
Defeated success rate is relatively low, then may the sector website hiding website it is more, AP can be by the sector
The RTS threshold values of sector where the hiding website of website are set to smaller value so that the website of the sector
RTS open, so as to carry out channel guard, reduction collision.
STA receives the threshold parameter collection of AP transmissions, according to the area information of oneself, i.e., where oneself
Sector, determines the RTS threshold values of the sector.For example, according to table 1, if the sector where STA is
Sector 2, then STA can determine that corresponding threshold value is 1500 bytes.When to AP send data
Before frame, if data frame frame length is more than RTS threshold values, RTS frames are sent first.If data frame frame
It is long to be less than RTS threshold values, then RTS frames need not be sent first.
If threshold parameter concentrates the effective time length that further comprises threshold value, STA is receiving carrying
The finish time of the radio frames of the parameter set starts timing, in the time range, and STA uses the parameter
The threshold value of concentration judges whether to send RTS frames before sending data frame to AP.Terminate when the moment,
STA should not be continuing with the threshold value, but the local thresholding for preserving and using the newest transmissions of AP is joined
Manifold.
Embodiment two
As shown in Figure 3 B.In the embodiment of the present invention, the threshold parameter that AP is sent, which is concentrated, includes region letter
Breath and the corresponding relation of threshold value.In the present embodiment, the area information could be arranged to the wireless of STA
Signal measurement parameter.
In step 120, the second website is according to threshold parameter collection, and obtaining the corresponding threshold value of this website includes：
Closed according to the wireless signal measurement parameter and wireless signal measurement parameter of this website are corresponding with threshold value
System, obtains the corresponding threshold value of this website.
STA wireless signal measurement parameter can be：STA receiving power, STA reception signal is strong
Degree indicate (RSSI), the Packet Error Ratio of STA within a certain period of time, or with AP transmit power,
STA RSSI and transmit power is the functional relation of parameter.
During practical communication, STA with AP during communicating, according to its present position and week
Wireless environment variation is enclosed, the measurement parameter result of its wireless signal can change, diverse location has one
Determine excursion, therefore, it can determine STA region with wireless signal measurement parameter.
For example, wireless signal measurement parameter is STA received signal strength indicator RSSI, so, door
Limit the corresponding relation between setting RSSI and threshold value in parameter set.
It is exemplary threshold parameter collection referring to table 2.
| RSSI(dBm) | RTS threshold values (byte) |
| - 30~-40 | 2000 |
| - 40~-50 | 1500 |
| - 50~-60 | 500 |
| … | … |
The area information of table 2 is the threshold parameter collection example table in the case of wireless signal measurement parameter
In actual mechanical process, AP sides are measured to the signal power that STA is sent, when STA's
Signal is sent when being interfered, signal to noise ratio is calculated, and is counted, when interference reaches to a certain degree, then
RTS threshold value is adjusted, for example, reduces RTS threshold values, the RTS that increase STA is sent, so as to reach
To the purpose of transmission protection.
STA receives the parameter list of AP transmissions, according to the area information of oneself, i.e. oneself docking collection of letters number
The RSSI value arrived of measurement, determines the interval where the RSSI, and corresponding RTS threshold values.
For example, STA RSSI is -45dBm, then STA can determine that the corresponding threshold value of this website is
1500 bytes.It is first if data frame frame length is more than RTS threshold values before data frame is sent to AP
First send RTS frames.If data frame frame length is less than RTS threshold values, RTS frames need not be sent first.
In another example, wireless signal measurement parameter is with the RSSI and hair of AP transmit power, STA
Send the functional relation that power is parameter.It is M to make wireless signal measurement parameter, then (AP sends work(to M=f
Rate, STA RSSI, STA transmit powers, other specification).F (x) is functional relation.
M is corresponding with threshold value, then exemplary threshold parameter table is as shown in table 3.
| M(dBm) | RTS threshold values (byte) |
| - 30~-40 | 2000 |
| - 40~-50 | 1500 |
| - 50~-60 | 500 |
| … | … |
Table 3 is that area information is threshold parameter collection example table in the case of wireless signal measurement parameter
Embodiment three
As shown in Figure 3 C.In this example, area information is common by sector and wireless signal measurement parameter
The region determined, website determines that oneself is corresponding by the sector and wireless signal measurement parameter at place
Threshold value.
It is the corresponding relation of exemplary sector, wireless signal measurement parameter and threshold value referring to table 4
Parameter list.
Table 3 is the parameter list of the corresponding relation of sector, wireless signal measurement parameter and threshold value
It is described in the case of the sector where area information includes this website and wireless signal measurement parameter
According to threshold parameter collection, obtaining the corresponding threshold value of this website includes：According to the corresponding sector of this website and
Wireless signal measurement parameter and the corresponding relation of sector, wireless signal measurement parameter and threshold value, are obtained
Take the corresponding threshold value of this website.
For example, the second website receives the threshold parameter collection that the first website is sent, wherein carrying shown in table 3
Sector, the corresponding relation of wireless signal measurement parameter and threshold value, the sector of the second website is sector2,
RSSI is -45dBm, then the second website can determine that the corresponding threshold value of this website is 1000 bytes.
Example IV
As shown in Figure 3 D.In the present embodiment, the first website is access point AP, and the second website is and AP
Non-access site the non-AP STA, abbreviation STA of association.AP is in the system message Beacon oneself sent
In frame, or in Probe Response frames, threshold parameter collection is sent to the STA associated with oneself,
And channel booking configured information.Channel booking configured information explicitly can notify STA to be sent to AP
Whether RTS frame is sent before data frame.
In the present embodiment, threshold parameter, which is concentrated, includes the corresponding relation of threshold value and area information.Threshold value
Unit can use byte, it would however also be possible to employ transmission time length.
If AP sets STA to need to send RTS frame (corresponding bits before data frame is sent to AP
1) position is set to, then STA determines the RTS threshold values of oneself according to the area information of oneself first, and
And if be sent to AP data frame length be more than RTS threshold values, first send RTS frames.If number
It is less than RTS threshold values according to frame frame length, then need not sends RTS frames first.
If AP sets STA to send RTS frames (corresponding ratio before data frame is sent to AP
0) special position is set to, then STA can ignore threshold parameter, before data frame is sent to AP not
Send RTS frames.
Embodiment five
In the present embodiment, the first website and the second website are non-AP STA, and two websites carry out direct-connected
Communication.In this case, two websites by management frame should interact respective RTS frames before transmission starts
Threshold parameter collection, example of parameters and parameter application method be identical with preceding embodiment, repeats no more.
Embodiment six
In the present embodiment, the first website is access point AP, and the second website is the non-access station associated with AP
Point non-AP STA, abbreviation STA.AP is in the system message Beacon frames that oneself sends, either
In Probe Response frames threshold parameter collection is sent to the STA associated with oneself.
In the present embodiment, threshold parameter concentrates the QoS grades for including data frame are corresponding with threshold value to close
System.That is, the corresponding certain RTS threshold values of QoS grades of data frame.The QoS grades of data frame can
To be the priority of Business Stream, or the access category (Access Catogory) belonging to data.
By taking access category as an example, in the prior art with four class access categories, it is respectively：AC-BK
(Background, background), AC-BE (Best effort, do one's best), AC-VO (Voice,
Audio) and AC-VI (Video, video).The frame length of data frame with different access categories may not
Together, therefore RTS threshold values can be set respectively.The following is a data QoS grades correspondence threshold value
Threshold parameter represent example.
STA is sent to AP before data frame, is determined according to the QoS grades of data frame to be sent corresponding
RTS threshold values, when data frame length exceedes threshold value, then send RTS frames, otherwise directly transmit number first
According to frame.
Embodiment seven
In the present embodiment, the first website is access point AP, and the second website is the non-access station associated with AP
Point non-AP STA, abbreviation STA.AP in the system message Beacon frames that oneself sends, to from
The STA of oneself association sends threshold parameter collection.
In the present embodiment, threshold parameter level includes STA to threshold value during AP transmission RTS frames,
And explicitly notify whether STA sends RTS frames before sending data frame to AP.
If AP sets STA to need to send RTS frame (corresponding bits before data frame is sent to AP
1) position is set to, if the data frame frame length that STA is sent to AP is more than RTS threshold values, sends out first
Send RTS frames.If data frame frame length is less than RTS threshold values, RTS frames need not be sent first.
If AP sets STA to send RTS frames (corresponding ratio before data frame is sent to AP
0) special position is set to, then STA can ignore threshold parameter, before data frame is sent to AP not
Send RTS frames.
Embodiment eight
In the present embodiment, AP is concentrated to the association STA threshold parameters sent includes first area information collection
Close, and channel booking configured information.
First area information aggregate includes one or more area information.Area information is belonging to STA
Sector, or STA wireless measurement parameter, or sector and wireless measurement parameter.
The channel booking configured information and first area information aggregate that STA is carried according to threshold parameter collection are true
Whether recognize needs to perform channel booking；Wherein, the second station is indicated in the channel booking configured information
Point sends the channel reservation request frame and the area information of the second website belongs to the first area letter
During breath set, confirm as needing to perform channel booking；Otherwise, confirm as that channel booking need not be performed；
For example, indicating that second website sends the channel reservation request frame in channel booking configured information
When, in the case that the area information in the information aggregate of first area is sector, STA judges that oneself is fanned
Whether area belongs to the sector that first area information aggregate is notified, if it is, confirming as needing to perform letter
Road is preengage, and channel booking is performed before data frame is sent；Region letter in the information aggregate of first area
In the case that breath is wireless measurement parameter, STA judges whether the wireless measurement parameter of oneself belongs to first
The wireless measurement parameter that area information set is notified, if it is, confirm as needing to perform channel booking,
Channel booking is performed before data frame is sent；Area information in the information aggregate of first area is sector
In the case of wireless measurement parameter, STA judges whether oneself sector belongs to first area information aggregate institute
The sector of notice and judge whether the wireless measurement parameter of oneself belongs to first area information aggregate and notified
Wireless measurement parameter, if being both yes, confirm as needing performing channel booking, sending number
According to performing channel booking before frame.In another example, the region letter in the information aggregate of first area
In the case that breath is sector and wireless measurement parameter, STA judges whether oneself sector belongs to first area letter
Breath gathers notified sector and judges whether the wireless measurement parameter of oneself belongs to first area information collection
Notified wireless measurement parameter is closed, if any of both are yes, confirms as needing to perform channel
Reservation, channel booking is performed before data frame is sent.
In the embodiment of the present invention, execution channel booking includes before data frame is sent：STA need to
When AP sends data frame, judge whether the length of data frame is more than threshold value；In the feelings more than threshold value
Under condition, channel reservation request frame is sent, the corresponding response of channel reservation request frame of AP replies is received
Frame, and after above-mentioned response frame is received, data frame is sent to AP；Less than or equal to thresholding
In the case of value, data frame is sent to AP.
AP is after threshold parameter concentrates notification area information, when STA judges oneself to belong to notified area
Domain, and channel booking configured information indicates that STA needs to send RTS frames before data frame is sent, then
STA judges whether to send RTS frames according to STA oneself threshold values set.When data frame length is more than certainly
During the threshold value that oneself is set, RTS frames are sent first before data frame is sent, RTS is not otherwise sent
Frame.When channel booking configured information indicates that STA need not send RTS frames, STA ignores oneself and set
The threshold value put, it is not necessary to send RTS frames.
Embodiment nine
In the present embodiment, AP is concentrated to the association STA threshold parameters sent includes channel booking instruction letter
Breath and the first QoS class information set, the first QoS class information set includes one or more
QoS grades.Wherein, the description in the QoS grades be the same as Example six of data frame.
When STA judges that oneself data frame to be sent belongs to notified QoS grades, and channel booking
Configured information indicates that STA needs to send RTS frames before data frame is sent, then STA is according to STA
The threshold value oneself set judges whether to send RTS frames.When data frame length is more than the threshold value oneself set
When, RTS frames are sent first before data frame is sent, and RTS frames are not otherwise sent.Work as channel booking
When configured information indicates that STA need not send RTS frames, STA ignores the threshold value of oneself setting, no
RTS frames must be sent.
It is access point AP with the first website in above-described embodiment, the second website is associated with AP non-
It is illustrated exemplified by access website non-AP STA, abbreviation STA, in addition, the first website and second station
Point can be the STA websites of two direct-connected communication.
Based on design same as the previously described embodiments or similar, the embodiment of the present invention also provides a kind of data and passed
Defeated device, is arranged on access point website AP, referring to Fig. 4, data transmission device proposed by the present invention
Including：
Threshold parameter collection transmitting element 10, for sending threshold parameter collection, wherein, the threshold parameter collection
Carry the relevant information for notifying the second website to send channel reservation request frame；
Receiving unit 20, for receiving the channel reservation request frame that the second website is sent；
Response frame transmitting element 30, for sending the corresponding response frame of the channel reservation request frame；
The receiving unit 20 is additionally operable to receive the data frame that the second website is sent.
In the embodiment of the present invention, the threshold parameter that the threshold parameter collection transmitting element 10 is sent, which is concentrated, to be included
Any one of following information：
Channel booking configured information；Wherein, the channel booking configured information is used to indicate the second station
Whether point sends the channel reservation request frame；
Channel booking configured information and first area information aggregate；
Channel booking configured information and the first QoS class sets.
In the embodiment of the present invention, the threshold parameter that the threshold parameter collection transmitting element 10 is sent, which is concentrated, to be included
At least one of following content：
Second website to first website send channel reservation request frame when threshold value；
The corresponding relation of area information and threshold value；
The QoS grades and the corresponding relation of threshold value of data frame.
In the embodiment of the present invention, the area information includes at least one of following information：
Sector belonging to second website；
Wireless signal measurement parameter.
In the embodiment of the present invention, the threshold parameter that the threshold parameter collection transmitting element 10 is sent is concentrated and also wrapped
Include：
Effective time length；Wherein, the effective time length is used to notify the second website described effective
Need to perform channel booking before data frame is sent in time span.
In the embodiment of the present invention, the wireless signal measurement parameter includes at least one in following data：
Second website receives receiving power when the first website sends signal；
The received signal strength indicator RSSI of second website；
Using the transmit power of the transmit power of the first website, the RSSI of the second website and the second website as
The functional relation of parameter；
The Packet Error Ratio of second website within a predetermined period of time.
Based on design same as the previously described embodiments or similar, the embodiment of the present invention also provides a kind of data and passed
Defeated device, is arranged in non-access point site STA, referring to Fig. 5, data transfer dress proposed by the present invention
Put including：
Threshold parameter collection receiving unit 50, for receiving the threshold parameter collection that the first website is sent；
Channel booking unit 60, for when needing to send data frame, according to the letter of threshold parameter collection carrying
Breath, sends channel reservation request frame；
Data frame transmitting element 70, for receive the corresponding response frame of the channel reservation request frame it
Afterwards, the data frame is sent.
In the embodiment of the present invention,
The channel booking unit 60 includes threshold value judge module 61, reserve requests frame sending module 62,
And response frame receiving module 63；
The threshold value judge module 61 is used to judge whether the length of data frame to be more than threshold value；
The reserve requests frame sending module 62 is used to, when the length of data frame is more than threshold value, send letter
Road reserve requests frame；
The response frame receiving module 63 is used to receive the channel reservation request frame correspondence that the first website is sent
Response frame；
The data transmission device also includes：
Channel booking confirmation unit 80, for the information carried according to threshold parameter collection, is confirmed whether needs
Perform channel booking；When confirming to need to perform channel booking, notify channel booking unit performs channel pre-
About；
When confirming that channel booking need not be performed, data frame transmitting element is notified to send the data frame.
In the embodiment of the present invention, the channel booking confirmation unit 80 includes at least one in following module
It is individual：
First confirms module 81, and the channel booking configured information confirmation for being carried according to threshold parameter collection is
It is no to need to perform channel booking；Wherein, the channel booking configured information is used to indicate second website
Whether the channel reservation request frame is sent；
Indicate that second website sends the channel reservation request frame in the channel booking configured information
When, confirm as needing to perform channel booking；Second website is indicated in the channel booking configured information
When not sending the channel reservation request frame, confirm as that channel booking need not be performed；
Second confirms module 82, for the channel booking configured information and first carried according to threshold parameter collection
Area information set is confirmed whether to need to perform channel booking；
The channel booking configured information indicate second website send the channel reservation request frame,
And when the area information of the second website belongs to the first area information aggregate, confirm as needing to perform letter
Road is preengage；Otherwise, confirm as that channel booking need not be performed；
3rd confirms module 83, for the channel booking configured information and first carried according to threshold parameter collection
QoS class sets are confirmed whether to need to perform channel booking；
The channel booking configured information indicate second website send the channel reservation request frame,
And when the QoS grades of data frame to be sent belong to the first QoS class sets, confirm as needing
Perform channel booking；Otherwise, confirm as that channel booking need not be performed.
In the embodiment of the present invention, the channel booking unit 60 also includes：
Threshold value acquisition module 64, for according to threshold parameter collection, obtaining the corresponding threshold value of the second website.
In the embodiment of the present invention, the threshold parameter, which is concentrated, to be included：Second website is sent out to first website
Threshold value during channels reserve requests frame；
The threshold value acquisition module 64 includes：
First threshold value acquisition submodule 641, the threshold value for reading threshold parameter concentration, and
Using the threshold value of reading as the second website threshold value.
In the embodiment of the present invention, the threshold parameter, which is concentrated, includes area information and the corresponding relation of threshold value；
The threshold value acquisition module includes：
Second threshold value acquisition submodule 642, for the area information and thresholding concentrated according to threshold parameter
The area information of the corresponding relation of value and the second website, obtains the threshold value of the second website；
The area information includes at least one of following information：
Sector belonging to second website；
Wireless signal measurement parameter；
In the case of the sector that area information is included belonging to the second website, second threshold value obtains son
Module 642 is used for the sector according to belonging to the second website and the corresponding relation of each sector and threshold value,
Obtain the corresponding threshold value of the second website；
In the case where area information includes wireless signal measurement parameter, second threshold value obtains submodule
Block 642 is used for according to the corresponding wireless signal measurement parameter of the second website and wireless signal measurement parameter
With the corresponding relation of threshold value, the corresponding threshold value of the second website is obtained；
In the case of sector and the wireless signal measurement parameter that area information is included belonging to the second website, institute
Stating the second threshold value acquisition submodule 642 is used for according to the corresponding sector of the second website and wireless signal measurement
Parameter and the corresponding relation of sector, wireless signal measurement parameter and threshold value, obtain the second website pair
The threshold value answered.
In the embodiment of the present invention, the threshold parameter, which is concentrated, includes QoS grades pass corresponding with threshold value
System；
The threshold value acquisition module includes：
3rd threshold value acquisition submodule 643, for according to the corresponding QoS grades of the second website and
The corresponding relation of QoS grades and threshold value, obtains the corresponding threshold value of the second website.
In the embodiment of the present invention, the wireless signal measurement parameter includes at least one in following data：
Second website receives receiving power when the first website sends signal；
The corresponding received signal strength indicator RSSI of second website；
Using the transmit power of the transmit power of the first website, the RSSI of the second website and the second website as
The functional relation of parameter；
The Packet Error Ratio of second website within a predetermined period of time.
In the embodiment of the present invention, the threshold parameter, which is concentrated, also includes effective time span；Wherein,
The channel booking unit 60 also includes timing module (not shown), for having for described
Time span is imitated, the timing since the radio frames for carrying the threshold parameter collection receive finish time；
So that channel booking unit is in the effective time length, the information carried according to threshold parameter collection,
Channel booking is performed before sending data frame.
It should be noted that embodiment described above be for only for ease of it will be understood by those skilled in the art that
, the protection domain being not intended to limit the invention, in the premise for the inventive concept for not departing from the present invention
Under, any obvious replacement and improvement that those skilled in the art are made to the present invention etc. is at this
Within the protection domain of invention.
Claims (33)
1. a kind of data transmission method, it is characterised in that methods described includes：
First website sends threshold parameter collection to the second website, wherein, the threshold parameter collection carries logical
Know that the second website sends the relevant information of channel reservation request frame；
First website receives the channel reservation request frame that the second website is sent；
First website sends the corresponding response frame of the channel reservation request frame to the second website；
First website receives the data frame that the second website is sent.
2. data transmission method according to claim 1, it is characterised in that the threshold parameter collection
Include any one of following information：
Channel booking configured information；Wherein, the channel booking configured information is used to indicate the second station
Whether point sends the channel reservation request frame；
Channel booking configured information and first area information aggregate；
Channel booking configured information and the first QoS class sets.
3. data transmission method according to claim 1, it is characterised in that the threshold parameter collection
Include at least one of following content：
Second website to first website send channel reservation request frame when threshold value；
The corresponding relation of area information and threshold value；
The QoS grades and the corresponding relation of threshold value of data frame.
4. data transmission method according to claim 3, it is characterised in that
The area information includes at least one of following information：
Sector belonging to second website；
Wireless signal measurement parameter.
5. data transmission method according to claim 4, it is characterised in that the wireless signal is surveyed
Measuring parameter includes at least one in following data：
Second website receives receiving power when the first website sends signal；
The received signal strength indicator RSSI of second website；
Using the transmit power of the transmit power of the first website, the RSSI of the second website and the second website as
The functional relation of parameter；
The Packet Error Ratio of second website within a predetermined period of time.
6. the data transmission method according to any one of claim 2~5, it is characterised in that institute
Stating threshold parameter and concentrating also includes：
Effective time length；Wherein, the effective time length is used to notify the second website described effective
Need to perform channel booking before data frame is sent in time span.
7. data transmission method according to claim 1, it is characterised in that the list of the threshold value
Position is byte, or transmission time length.
8. data transmission method according to claim 1, it is characterised in that first website is
Access point, or, it is the website that direct-connected communication is carried out with the second station point.
9. a kind of data transmission method, it is characterised in that methods described includes：
Second website receives the threshold parameter collection that the first website is sent；
When needing to send data frame, the information carried according to threshold parameter collection sends channel reservation request
Frame；
After the corresponding response frame of the channel reservation request frame is received, the data frame is sent.
10. data transmission method according to claim 9, it is characterised in that
Before the information carried according to threshold parameter collection, transmission channel reservation request frame, the data
Transmission method also includes：
The information carried according to threshold parameter collection, is confirmed whether to need to perform channel booking；
When confirming to need to perform channel booking, when the length of data frame is more than threshold value, perform described
The step of sending channel reservation request frame；When data frame length is less than threshold value, the transmission institute is performed
The step of stating data frame；
When confirming that channel booking need not be performed, the step of performing the transmission data frame.
11. data transmission method according to claim 10, it is characterised in that
The information carried according to threshold parameter collection, is confirmed whether to need to perform channel booking according to as follows
Any execution of mode：
Mode one：
The channel booking configured information carried according to threshold parameter collection is confirmed whether to need to perform channel booking；
Wherein, the channel booking configured information is used to indicate whether second website sends the channel booking
Claim frame；
Indicate that second website sends the channel reservation request frame in the channel booking configured information
When, confirm as needing to perform channel booking；Second website is indicated in the channel booking configured information
When not sending the channel reservation request frame, confirm as that channel booking need not be performed；
Mode two：
The channel booking configured information and first area information aggregate carried according to threshold parameter collection is confirmed whether
Need to perform channel booking；
The channel booking configured information indicate second website send the channel reservation request frame,
And when the area information of the second website belongs to the first area information aggregate, confirm as needing to perform letter
Road is preengage；Otherwise, confirm as that channel booking need not be performed；
Mode three：
The channel booking configured information and the first QoS class sets carried according to threshold parameter collection confirms
It is no to need to perform channel booking；
The channel booking configured information indicate second website send the channel reservation request frame,
And when the QoS grades of data frame to be sent belong to the first QoS class sets, confirm as needing
Perform channel booking；Otherwise, confirm as that channel booking need not be performed.
12. data transmission method according to claim 9, it is characterised in that send letter described
Before road reserve requests frame, the data transmission method also includes：
Second website obtains the corresponding threshold value of the second website according to threshold parameter collection.
13. data transmission method according to claim 12, it is characterised in that the threshold parameter
Concentration includes：Second website to first website send channel reservation request frame when threshold value；
It is described according to threshold parameter collection, obtaining the corresponding threshold value of the second website includes：
Read threshold parameter concentrate the threshold value, and using the threshold value of reading as the second website door
Limit value.
14. data transmission method according to claim 12, it is characterised in that the threshold parameter
Concentration includes area information and the corresponding relation of threshold value；
The area information includes at least one of following information：
Sector belonging to second website；
Wireless signal measurement parameter；
It is described according to threshold parameter collection in the case of the sector that area information is included belonging to the second website,
Obtaining the corresponding threshold value of the second website includes：
The corresponding relation of sector and each sector and threshold value according to belonging to the second website, obtains the
The corresponding threshold value of two websites；
It is described according to threshold parameter collection in the case where area information includes wireless signal measurement parameter, obtain
The corresponding threshold value of the second website is taken to include：
According to the corresponding wireless signal measurement parameter of the second website and wireless signal measurement parameter and thresholding
The corresponding relation of value, obtains the corresponding threshold value of the second website；
In the case of sector and the wireless signal measurement parameter that area information is included belonging to the second website, institute
State according to threshold parameter collection, obtaining the corresponding threshold value of the second website includes：
Surveyed according to the corresponding sector of the second website and wireless signal measurement parameter and sector, wireless signal
The corresponding relation of parameter and threshold value is measured, the corresponding threshold value of the second website is obtained.
15. data transmission method according to claim 12, it is characterised in that
The threshold parameter, which is concentrated, includes the corresponding relation of QoS grades and threshold value；
It is described according to door in the case of the corresponding relation that threshold parameter collection includes QoS grades and threshold value
Parameter set is limited, obtaining the corresponding threshold value of the second website includes：
According to the corresponding relation of the corresponding QoS grades of the second website and QoS grades and threshold value,
Obtain the corresponding threshold value of the second website.
16. data transmission method according to claim 14, it is characterised in that the wireless signal
Measurement parameter includes at least one in following data：
Second website receives receiving power when the first website sends signal；
The corresponding received signal strength indicator RSSI of second website；
Using the transmit power of the transmit power of the first website, the RSSI of the second website and the second website as
The functional relation of parameter；
The Packet Error Ratio of second website within a predetermined period of time.
17. data transmission method according to claim 9, it is characterised in that the threshold parameter
Concentrating also includes effective time span；Wherein, for the effective time length, the second website is from described
The radio frames reception finish time for carrying the threshold parameter collection starts timing；
In the effective time length, the information that the second website is carried according to threshold parameter collection is being sent
Channel booking is performed before data frame.
18. data transmission method according to claim 9, it is characterised in that second website
It is website of the association to first website, or, second website is carried out with the first stop point
The website of direct-connected communication.
19. a kind of data transmission device, is arranged on access point website AP, it is characterised in that described
Device includes：
Threshold parameter collection transmitting element, for sending threshold parameter collection, wherein, the threshold parameter collection is taken
The relevant information of channel reservation request frame is sent with the second website is notified；
Receiving unit, for receiving the channel reservation request frame that the second website is sent；
Response frame transmitting element, for sending the corresponding response frame of the channel reservation request frame；
The receiving unit is additionally operable to receive the data frame that the second website is sent.
20. data transmission device according to claim 19, it is characterised in that the threshold parameter
The threshold parameter that collection transmitting element is sent, which is concentrated, includes any one of following information：
Channel booking configured information；Wherein, the channel booking configured information is used to indicate the second station
Whether point sends the channel reservation request frame；
Channel booking configured information and first area information aggregate；
Channel booking configured information and the first QoS class sets.
21. data transmission device according to claim 19, it is characterised in that the threshold parameter
The threshold parameter that collection transmitting element is sent, which is concentrated, includes at least one of following content：
Second website to first website send channel reservation request frame when threshold value；
The corresponding relation of area information and threshold value；
The QoS grades and the corresponding relation of threshold value of data frame.
22. data transmission device according to claim 21, it is characterised in that
The area information includes at least one of following information：
Sector belonging to second website；
Wireless signal measurement parameter.
23. data transmission device according to claim 20, it is characterised in that the threshold parameter
The threshold parameter that collection transmitting element is sent, which is concentrated, also to be included：
Effective time length；Wherein, the effective time length is used to notify the second website described effective
Need to perform channel booking before data frame is sent in time span.
24. data transmission device according to claim 22, it is characterised in that the wireless signal
Measurement parameter includes at least one in following data：
Second website receives receiving power when the first website sends signal；
The received signal strength indicator RSSI of second website；
Using the transmit power of the transmit power of the first website, the RSSI of the second website and the second website as
The functional relation of parameter；
The Packet Error Ratio of second website within a predetermined period of time.
25. a kind of data transmission device, is arranged in non-access point site STA, it is characterised in that institute
Stating device includes：
Threshold parameter collection receiving unit, for receiving the threshold parameter collection that the first website is sent；
Channel booking unit, for when needing to send data frame, according to the information of threshold parameter collection carrying,
Send channel reservation request frame；
Data frame transmitting element, for after the corresponding response frame of the channel reservation request frame is received,
Send the data frame.
26. data transmission device according to claim 9, it is characterised in that
The channel booking unit includes threshold value judge module, reserve requests frame sending module, and rings
Answer frame receiving module；
The threshold value judge module is used to judge whether the length of data frame to be more than threshold value；
The reserve requests frame sending module is used to, when the length of data frame is more than threshold value, send channel
Reserve requests frame；
The response frame receiving module is used to receive the corresponding sound of channel reservation request frame that the first website is sent
Answer frame；
The data transmission device also includes：
Channel booking confirmation unit, for the information carried according to threshold parameter collection, is confirmed whether that needs are held
Row channel booking；When confirming to need to perform channel booking, channel booking unit is notified to perform channel booking；
When confirming that channel booking need not be performed, data frame transmitting element is notified to send the data frame.
27. data transmission device according to claim 26, it is characterised in that
The channel booking confirmation unit includes at least one in following module：
First confirms module, and the channel booking configured information for being carried according to threshold parameter collection is confirmed whether
Need to perform channel booking；Wherein, the channel booking configured information is used to indicate that second website is
It is no to send the channel reservation request frame；
Indicate that second website sends the channel reservation request frame in the channel booking configured information
When, confirm as needing to perform channel booking；Second website is indicated in the channel booking configured information
When not sending the channel reservation request frame, confirm as that channel booking need not be performed；
Second confirms module, for the channel booking configured information carried according to threshold parameter collection and the firstth area
Domain information set is confirmed whether to need to perform channel booking；
The channel booking configured information indicate second website send the channel reservation request frame,
And when the area information of the second website belongs to the first area information aggregate, confirm as needing to perform letter
Road is preengage；Otherwise, confirm as that channel booking need not be performed；
3rd confirms module, for the channel booking configured information and first carried according to threshold parameter collection
QoS class sets are confirmed whether to need to perform channel booking；
The channel booking configured information indicate second website send the channel reservation request frame,
And when the QoS grades of data frame to be sent belong to the first QoS class sets, confirm as needing
Perform channel booking；Otherwise, confirm as that channel booking need not be performed.
28. data transmission device according to claim 25, it is characterised in that the channel booking
Unit also includes：
Threshold value acquisition module, for according to threshold parameter collection, obtaining the corresponding threshold value of the second website.
29. data transmission device according to claim 28, it is characterised in that the threshold parameter
Concentration includes：Second website to first website send channel reservation request frame when threshold value；
The threshold value acquisition module includes：
First threshold value acquisition submodule, the threshold value for reading threshold parameter concentration, and will read
The threshold value taken as the second website threshold value.
30. data transmission device according to claim 28, it is characterised in that the threshold parameter
Concentration includes area information and the corresponding relation of threshold value；
The threshold value acquisition module includes：
Second threshold value acquisition submodule, for the area information concentrated according to threshold parameter and threshold value
The area information of corresponding relation and the second website, obtains the threshold value of the second website；
The area information includes at least one of following information：
Sector belonging to second website；
Wireless signal measurement parameter；
In the case of the sector that area information is included belonging to the second website, second threshold value obtains son
Module is used for the sector according to belonging to the second website and the corresponding relation of each sector and threshold value, obtains
Take the corresponding threshold value of the second website；
In the case where area information includes wireless signal measurement parameter, second threshold value is obtained
Submodule is used for according to the corresponding wireless signal measurement parameter of the second website and wireless signal measurement parameter
With the corresponding relation of threshold value, the corresponding threshold value of the second website is obtained；
In the case of sector and the wireless signal measurement parameter that area information is included belonging to the second website, institute
Stating the second threshold value acquisition submodule is used to be joined according to the corresponding sector of the second website and wireless signal measurement
Number and the corresponding relation of sector, wireless signal measurement parameter and threshold value, obtain the second website correspondence
Threshold value.
31. data transmission device according to claim 28, it is characterised in that
The threshold parameter, which is concentrated, includes the corresponding relation of QoS grades and threshold value；
The threshold value acquisition module includes：
3rd threshold value acquisition submodule, for according to the corresponding QoS grades of the second website and QoS
The corresponding relation of grade and threshold value, obtains the corresponding threshold value of the second website.
32. data transmission device according to claim 30, it is characterised in that the wireless signal
Measurement parameter includes at least one in following data：
Second website receives receiving power when the first website sends signal；
The corresponding received signal strength indicator RSSI of second website；
Using the transmit power of the transmit power of the first website, the RSSI of the second website and the second website as
The functional relation of parameter；
The Packet Error Ratio of second website within a predetermined period of time.
33. data transmission device according to claim 25, it is characterised in that the threshold parameter
Concentrating also includes effective time span；Wherein,
The channel booking unit also includes timing module, for for the effective time length, from institute
State carry the threshold parameter collection radio frames receive finish time start timing；So that channel booking unit
In the effective time length, the information carried according to threshold parameter collection is held before data frame is sent
Row channel booking.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610082704.7A CN107046730B (en) | 2016-02-05 | 2016-02-05 | Data transmission method and device |
| PCT/CN2016/108890 WO2017133314A1 (en) | 2016-02-05 | 2016-12-07 | Data transmission method and device |
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| CN201610082704.7A CN107046730B (en) | 2016-02-05 | 2016-02-05 | Data transmission method and device |
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Also Published As
| Publication number | Publication date |
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| WO2017133314A1 (en) | 2017-08-10 |
| CN107046730B (en) | 2021-01-22 |
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