CN109429359A - WLAN link establishing method and equipment - Google Patents
WLAN link establishing method and equipment Download PDFInfo
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- CN109429359A CN109429359A CN201710527445.9A CN201710527445A CN109429359A CN 109429359 A CN109429359 A CN 109429359A CN 201710527445 A CN201710527445 A CN 201710527445A CN 109429359 A CN109429359 A CN 109429359A
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- 238000004891 communication Methods 0.000 claims description 30
- 238000012790 confirmation Methods 0.000 claims description 24
- 238000012545 processing Methods 0.000 claims description 18
- 238000003860 storage Methods 0.000 claims description 15
- 238000001514 detection method Methods 0.000 claims description 9
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- 238000013461 design Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/10—Small scale networks; Flat hierarchical networks
- H04W84/12—WLAN [Wireless Local Area Networks]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/18—Management of setup rejection or failure
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/20—Manipulation of established connections
Abstract
A kind of WLAN link establishing method and equipment.The described method includes: first network equipment uses initial bandwidth broadcast probe requests thereby, it detects whether to receive the probe response corresponding with probe requests thereby that second network equipment is sent, if not receiving probe response, then using adjustment bandwidth broadcast probe requests thereby, and it is executed since above-mentioned the step of detecting whether to receive the probe response corresponding with probe requests thereby that second network equipment sends again, wherein, adjustment bandwidth refers to bandwidth more smaller than the bandwidth of last time use；If receiving probe response, WLAN link is established with second network equipment, wherein the bandwidth of WLAN link is to receive used bandwidth when probe response.Scheme provided by the embodiments of the present application, by probe requests thereby being sent again using smaller adjustment bandwidth, to expand investigative range, it is ensured that WLAN link is successfully established in the case where not receiving probe response corresponding with probe requests thereby.
Description
Technical field
The invention relates to field of communication technology, in particular to a kind of WLAN (Wireless Local
Area Networks, WLAN) link establishing method and equipment.
Background technique
WLAN is particularly convenient data transmission system, refers to and interconnects the network equipment using wireless communication technique, structure
At the network system that can communicate with each other and realize resource-sharing.
The network equipment will first find other network equipments that WLAN link can be established with it before establishing WLAN link.
In the prior art, the network equipment sends probe requests thereby using 20MHz bandwidth, and its of WLAN link can be established with it with searching
Its network equipment.
In general, the attainable maximum transmission distance of probe requests thereby institute sent with 20MHz bandwidth is 400 meters of left side
The right side, if the distance between a certain network equipment and another network equipment are more than 400 meters, another network equipment can not be received
Probe requests thereby causes the two that can not establish WLAN link.
Therefore, the prior art there are problems that leading to not establish WLAN link because investigative range is limited.
Summary of the invention
The embodiment of the present application provides a kind of WLAN link establishing method and equipment, to solve present in the prior art
Lead to not the problem of establishing WLAN link because investigative range is limited.
In a first aspect, the embodiment of the present application provides a kind of WLAN link establishing method, this method comprises: first network equipment
Using initial bandwidth broadcast probe requests thereby；First network equipment detects whether to receive asking with detection for second network equipment transmission
Ask corresponding probe response；If not receiving probe response, first network equipment uses adjustment bandwidth broadcast probe requests thereby, and
It is executed since detecting whether the step of receiving the probe response corresponding with probe requests thereby of second network equipment transmission again,
Wherein, adjustment bandwidth refers to bandwidth more smaller than the bandwidth of last time use；If receiving probe response, first network equipment
WLAN link is established with second network equipment, wherein the bandwidth of WLAN link is to receive used bandwidth when probe response.
In scheme provided by the embodiments of the present application, by the case where not receiving probe response corresponding with probe requests thereby
Under, probe requests thereby is sent using smaller adjustment bandwidth again, to expand investigative range, it is ensured that WLAN link is successfully built
It is vertical.
In a possible design, initial bandwidth is 20MHz；In the detection for not receiving with being sent using initial bandwidth
In the case where requesting corresponding probe response, adjustment bandwidth is 1MHz.
In scheme provided by the embodiments of the present application, first network equipment directlys adopt minimum bandwidth 1MHz as adjustment band
Width avoids repeatedly adjusting the bandwidth for sending probe requests thereby to obtain the maximum coverage range of probe requests thereby, saves processing expense.
In another possible design, the above method further include: first network equipment sends the to second network equipment
One bandwidth ability information, and receive the second bandwidth ability information that second network equipment is sent, wherein the first bandwidth ability information
It is used to indicate the bandwidth type of first network equipment support, the second bandwidth ability information is used to indicate the support of second network equipment
Bandwidth type.
In scheme provided by the embodiments of the present application, first network equipment and second network equipment pass through the bandwidth for recording other side
Ability, to be carried out data transmission during aftermentioned adjustment using the bandwidth that both sides can use, it is ensured that Bandwidth adjustment
Accuracy, and facilitate be turned up Bandwidth adjustment efficiency.
In another possible design, first network equipment and second network equipment are established after WLAN link, are also wrapped
Include: during using WLAN link transmission data, first network equipment obtains reiving/transmitting state information, and reiving/transmitting state information is used
The state of WLAN link transmit-receive data is used in instruction；If reiving/transmitting state information meets preset condition, first network equipment will
The Bandwidth adjustment of WLAN link is the first bandwidth, and sends first information frame to second network equipment using the first bandwidth；If the
One network equipment receives the first confirmation signal corresponding with first information frame of second network equipment transmission, then first network is set
Standby determine uses the first bandwidth for transmission data.
In another possible design, first network equipment and second network equipment are established after WLAN link, are also wrapped
It includes: if first network equipment receives the second information frame that second network equipment uses the second bandwidth to send, to the second network
Equipment sends the second confirmation signal corresponding with the second information frame；Wherein, the second bandwidth is by second network equipment by WLAN link
Bandwidth adjustment after obtain.
The embodiment of the present application provides two kinds of Bandwidth adjustment modes, is active accommodation and passive adjustment respectively.By building
After vertical WLAN link, the bandwidth of WLAN link is dynamically adjusted, is protected between throughput demand and signal cover demand
Maintain an equal level weighing apparatus, under the premise of ensuring that WLAN link not will disconnect, maximumlly meets the needs of throughput.
On the other hand, the embodiment of the present application provides a kind of network equipment, which, which has, realizes above method example
Function.Function can also execute corresponding software realization by hardware realization by hardware.Hardware or software include one
A or multiple units corresponding with above-mentioned function.
It include processor and communication interface in the structure of the network equipment in a possible design, processor is configured
To support the network equipment to execute corresponding function in the above method.Communication interface is for supporting the network equipment and other network equipments
Between communication.Further, the network equipment can also include memory, and memory saves net for coupling with processor
The necessary program instruction of network equipment and data.
Another aspect, the embodiment of the present application provide a kind of computer storage medium, set for being stored as above-mentioned first network
Standby computer software instructions used, it includes for executing program designed by above-mentioned aspect.
Also on the one hand, the embodiment of the present application provides a kind of computer program product, when the computer program product is performed
When, the method that is used to execute above-mentioned aspect.
Compared to the prior art, in scheme provided by the embodiments of the present application, by do not receive it is corresponding with probe requests thereby
Probe response in the case where, probe requests thereby is sent using smaller adjustment bandwidth again, to expand investigative range, it is ensured that
WLAN link is successfully established.
Detailed description of the invention
Fig. 1 is the schematic diagram for the implementation environment that the application one embodiment provides；
Fig. 2A is the flow chart for the WLAN link establishing method that the application one embodiment provides；
Fig. 2 B is a kind of interaction figure of the WLAN link establishment process illustrated:
Fig. 3 A is the flow chart for the WLAN link establishing method that another embodiment of the application provides；
Fig. 3 B is a kind of interaction figure of the bandwidth adjustment process illustrated；
Fig. 4 A is the flow chart for the WLAN link establishing method that another embodiment of the application provides；
Fig. 4 B is a kind of interaction figure of the bandwidth adjustment process illustrated；
Fig. 5 is a kind of schematic diagram of the application scenarios illustrated；
Fig. 6 is the schematic diagram of another application scenarios illustrated；
Fig. 7 A is the schematic block diagram for the network equipment that the application one embodiment provides；
Fig. 7 B is the structural schematic diagram for the network equipment that the application one embodiment provides.
Specific embodiment
To keep the purposes, technical schemes and advantages of the application clearer, below in conjunction with attached drawing to the application embodiment party
Formula is described in further detail.
Referring to FIG. 1, the schematic diagram of the implementation environment provided it illustrates the application one embodiment.The implementation environment packet
It includes: first network equipment 110 and second network equipment 120.
The network equipment (including first network equipment 110 and second network equipment 120) be have with other network equipments it
Between establish the equipment of WLAN chain circuit function.Illustratively, the network equipment can be terminal device, such as mobile phone, tablet computer, electronics
Book reader, multimedia play equipment etc.；It is also possible to wearable device, such as smartwatch, Intelligent bracelet, intelligent glasses；
It can also be intelligent toy, such as unmanned plane, Intelligent fighting trolley；Either it is other have establish setting for WLAN chain circuit function
It is standby, such as wireless access points (Wireless Access Point).
For example, first network equipment 110 is mobile phone, and second network equipment 120 is also mobile phone.In another example first network
Equipment 110 is unmanned plane, and second network equipment 120 is remote controler or mobile phone.In another example first network equipment 110 is mobile phone,
And second the network equipment 120 be AP.
For convenience of description, in the embodiment of the present application, it is above-mentioned have WLAN link function is established between other network equipments
The equipment of energy is referred to as the network equipment.
Fig. 2A is please referred to, it illustrates the flow charts for the WLAN link establishing method that the application one embodiment provides.It should
Method can be applied in implementation environment shown in FIG. 1.This method may include the following steps.
Step 201, first network equipment uses initial bandwidth broadcast probe requests thereby.
For first network equipment with initial bandwidth broadcast probe requests thereby, probe requests thereby can be with first network equipment for discovery
Establish other network equipments of WLAN link.Initial bandwidth is the first band that first network device broadcasts probe requests thereby uses
It is wide.Optionally, initial bandwidth is 20MHz.
Step 202, first network equipment detects whether to receive the corresponding with probe requests thereby of second network equipment transmission
Probe response；If it is not, then executing following step 203；If so, executing following step 204.
The signal of different bandwidth has different coverage areas, bandwidth and coverage area negative correlation.Bandwidth is bigger, then
Coverage area is smaller；Conversely, bandwidth is smaller, then coverage area is bigger.Therefore, if other network equipments and first network equipment it
Between distance beyond first network equipment send probe requests thereby coverage area, then other network equipments can not receive first
The probe requests thereby that the network equipment is sent, also can not just send corresponding probe response.
If other network equipments receive above-mentioned probe requests thereby, sent and above-mentioned probe requests thereby pair to first network equipment
The probe response answered.Wherein, the other network equipments for sending above-mentioned probe response are second network equipment.Second network equipment
Quantity can be one, be also possible to multiple.Optionally, second network equipment sends above-mentioned detection using first network equipment
The bandwidth used when request sends probe response.For example, first network equipment uses 20MHz broadcast probe request, if another net
Network equipment receives the probe requests thereby, then the network equipment sends probe response to first network equipment using 20MHz.
Step 203, first network equipment uses adjustment bandwidth broadcast probe requests thereby, and again since above-mentioned steps 202
It executes.
First network equipment is not received by within a preset time after the probe response from other network equipments, to adjust
Whole bandwidth sends probe requests thereby, wherein adjustment bandwidth refers to bandwidth more smaller than the bandwidth of last time use, bigger to obtain
Coverage area.The bandwidth generallyd use in WLAN includes 1MHz, 5MHz, 10MHz, 20MHz, 40MHz, 80MHz and 160MHz etc..
Optionally, adjustment bandwidth is the other bandwidth of the low level-one of bandwidth used than the last time.Illustratively, if first network equipment uses
Initial bandwidth 20MHz broadcast probe request uses adjustment bandwidth to broadcast detection again for 10MHz if not receiving probe response
Request, and so on, until receiving probe response or having used minimum bandwidth (such as 1MHz) as adjustment bandwidth.
Optionally, the initial bandwidth that first network equipment uses is sent not receiving with using initial bandwidth for 20MHz
The corresponding probe response of probe requests thereby in the case where, adjustment bandwidth be 1MHz.First network equipment directlys adopt minimum bandwidth
1MHz is as adjustment bandwidth, to obtain the maximum coverage range of probe requests thereby, avoids repeatedly adjustment from sending probe requests thereby and is used
Bandwidth, save processing expense, and help to improve the efficiency for establishing WLAN link.
Step 204, first network equipment and second network equipment establish WLAN link.
After first network equipment receives the probe response corresponding with probe requests thereby of second network equipment transmission, the first net
Network equipment and second network equipment establish WLAN link, wherein are used when the bandwidth of WLAN link is receives probe response
Bandwidth.
Optionally, it after first network equipment receives the probe response that second network equipment is sent, is set to the second network
Preparation send association request, and above-mentioned association request establishes WLAN link for requesting.The bandwidth of above-mentioned association request and above-mentioned detection
It is identical to respond the bandwidth used.After second network equipment receives above-mentioned association request, using bandwidth identical with association request
Send associated response.After first network receives above-mentioned associated response, i.e., WLAN link is established with second network equipment.
Optionally, first network equipment sends the first bandwidth ability information, the first bandwidth ability letter to second network equipment
Breath is used to indicate the bandwidth type of first network equipment support, and second network equipment records the bandwidth kind that first network equipment is supported
Class.First network equipment receives the second bandwidth ability information that second network equipment is sent, and the second bandwidth ability information is for referring to
Show that the bandwidth type that second network equipment is supported, first network equipment record the bandwidth type of the support of second network equipment.Show
Example property, the first bandwidth ability information indicates that first network equipment can use the bandwidth of 1MHz, 5MHz, 10MHz and 20MHz, the
Two bandwidth ability information indicate that second network equipment can use the bandwidth of 1MHz, 5MHz, 10MHz, 20MHz and 40MHz.First net
Network equipment and second network equipment pass through the bandwidth ability of record other side, to use both sides in subsequent bandwidth adjustment process
The bandwidth that can be supported carries out data transmission.Optionally, the first bandwidth ability information is carried on association by first network equipment
Second network equipment is sent in request, the second bandwidth ability information can be carried in associated response and send out by second network equipment
Give first network equipment.
Optionally, when first network equipment receives the probe response that multiple second network equipments are sent, first network
Equipment chooses a network equipment according to user demand as target second network equipment from above-mentioned multiple second network equipments,
WLAN link is established with the target second network equipment.Illustratively, first network equipment is by the name of multiple second network equipments
Title is shown to user, and user therefrom chooses second network equipment, which is target second
The network equipment.
Fig. 2 B is please referred to, a kind of interaction figure of WLAN link establishment process is illustrated.First network equipment is adopted
Use 20MHz bandwidth as initial bandwidth broadcast probe requests thereby.Second network equipment does not receive first network equipment using 20MHz
The probe requests thereby that bandwidth is sent.First network equipment is adopted in the case where not receiving probe response corresponding with probe requests thereby
Use 1MHz bandwidth as adjustment bandwidth broadcast probe requests thereby.Second network equipment receives first network equipment using 1MHz bandwidth
The probe requests thereby of transmission sends probe response using same band.After first network equipment receives above-mentioned probe response, use
1MHz bandwidth sends association request to second network equipment.After second network equipment receives above-mentioned association request, use is identical
Bandwidth sends associated response to first network equipment.After first network equipment receives above-mentioned associated response, i.e., with the second network
Equipment establishes WLAN link, wherein the bandwidth of WLAN link is 1MHz.
In scheme provided by the embodiments of the present application, by the case where not receiving probe response corresponding with probe requests thereby
Under, probe requests thereby is sent using smaller adjustment bandwidth again, to expand investigative range, it is ensured that WLAN link is successfully built
It is vertical.
Established after WLAN link carries out data transmission in first network equipment and second network equipment, need to adjust bandwidth with
Meet the needs of throughput or avoid the disconnection of WLAN link, first network equipment can adjust two by active accommodation or passively
Kind mode, dynamically adjusts bandwidth.
In the alternative embodiment provided based on Fig. 2A embodiment, as shown in Figure 3A, also wrapped after above-mentioned steps 204
Include following steps.In the present embodiment, explanation is introduced to active accommodation mode.
Step 301, during using WLAN link transmission data, first network equipment obtains reiving/transmitting state information.
Reiving/transmitting state information is used to indicate the state using above-mentioned WLAN link transmit-receive data.Optionally, reiving/transmitting state is believed
Breath includes at least one of the following: received signal strength, sends success rate.Receiving signal strength expression first network equipment receives
Data signal strength, first network equipment is according to received signal strength indicator (Received Signal Strength
Indication, RSSI) obtain received signal strength.Sending success rate indicates that first network equipment is sent to second network equipment
The success rate of data.
Step 302, if reiving/transmitting state information meets preset condition, first network equipment is by the Bandwidth adjustment of WLAN link
For the first bandwidth, and first information frame is sent to second network equipment using the first bandwidth.
The basis of design of above-mentioned preset condition includes at least one of the following: received signal strength, sends success rate.If transmitting-receiving
Status information meets preset condition, then the bandwidth of first network equipment adjustment WLAN link；If reiving/transmitting state information does not meet pre-
If condition, then first network equipment does not adjust the bandwidth of WLAN link, and original bandwidth is kept to carry out data transmission.
In addition, by the agency of above, first network equipment records the bandwidth ability for having second network equipment, the of use
One bandwidth is the bandwidth type that second network equipment can be supported.It hereinbefore also introduces, the bandwidth packet generallyd use in WLAN
1MHz, 5MHz, 10MHz, 20MHz, 40MHz, 80MHz and 160MHz etc. are included, first network equipment is when adjusting bandwidth according to band
Wide division adjusts bandwidth step by step, illustratively, current bandwidth 10MHz, if bandwidth, first band is turned up in first network equipment
Width is 20MHz；If first network equipment turns down bandwidth, the first bandwidth is 5MHz.
In the embodiment of the present application, first network equipment is by recording the bandwidth ability of second network equipment and adjusting step by step
Bandwidth, it is ensured that the stationarity of Bandwidth adjustment impacts data transmission with reducing.
First information frame is first network equipment and the message that second network equipment transmits over a wlan link, and information frame can
To be data frame or management frame.
Optionally, if reiving/transmitting state information meets the first preset condition, the band of WLAN link is turned up in first network equipment
It is wide；If reiving/transmitting state information meets the second preset condition, first network equipment turns down the bandwidth of WLAN link.If reiving/transmitting state
Information had not both met the first preset condition, did not met the second preset condition yet, then first network equipment does not adjust WLAN link
Bandwidth keeps original bandwidth to carry out data transmission.
First preset condition include at least one of the following: received signal strength be greater than the first signal strength threshold, send at
Power is greater than the first success rate threshold value.Second preset condition includes at least one of the following: that received signal strength is less than second signal
Intensity threshold sends success rate less than the second success rate threshold value.Wherein, the first signal strength threshold is greater than second signal intensity threshold
Value, the first success rate threshold value are greater than the second success rate threshold value.Signal strength threshold and success rate threshold value can be based on practical experience
Or experimental data is preset.Illustratively, the first signal strength threshold is 80dBm, and second signal intensity threshold is 40dBm,
First success rate is 90%, and the second success rate is 70%.The received signal strength of first network equipment is 90dBm, is sent successfully
Rate is 95%, then the reiving/transmitting state information of first network equipment meets the first preset condition, and the bandwidth of WLAN link is turned up.
Step 303, if first network equipment receives corresponding with first information frame the first of second network equipment transmission
Confirmation signal, then first network equipment, which determines, uses the first bandwidth for transmission data.
Second network equipment is after receiving the first information frame that first network equipment is sent using the first bandwidth, if together
Meaning carries out subsequent data transmission using above-mentioned first bandwidth, then sends the first confirmation signal to first network equipment.First really
Recognize signal be used to indicate second network equipment agreement bandwidth of WLAN link is adjusted.Second network equipment sends first really
Recognize bandwidth used by signal, the first bandwidth used by sending first information frame with first network equipment is identical.
In a kind of possible embodiment, second network equipment is in the first information for receiving the transmission of first network equipment
After frame, the first confirmation signal directly is sent to first network equipment.In alternatively possible embodiment, the second network is set
It is standby after the first information frame for receiving the transmission of first network equipment, detect the first information frame received signal strength whether
Greater than predetermined threshold value, if so, the first confirmation signal corresponding with first information frame is sent to first network equipment, if it is not,
Then the first confirmation signal corresponding with first information frame is not sent to first network equipment.Predetermined threshold value can be according to practical warp
It tests or experimental data is preset.It is default whether second network equipment is greater than by the received signal strength of detection first information frame
Threshold value, it is ensured that the data that the first bandwidth that first network equipment uses is sent can be properly received by second network equipment.
Optionally, if first network equipment is not received by corresponding with first information frame the of second network equipment transmission
One confirmation signal, then first network equipment still carries out data communication using original bandwidth.
Optionally, the first confirmation signal is used to indicate second network equipment and has been properly received first information frame, is used for simultaneously
Show that the agreement of second network equipment is adjusted the bandwidth of WLAN link.
Fig. 3 B is please referred to, a kind of interaction figure of bandwidth adjustment process is illustrated.First network equipment and second
WLAN link is had built up between the network equipment, and is carried out data transmission with 20MHz bandwidth.First network equipment is with 20MHz band
Width sends data data_sn1000, if sending failure, first network equipment turns down bandwidth to 10MHz, with 10MHz bandwidth
Retransmit data data_sn1000.Second network equipment receives the data that first network equipment is sent with 10MHz bandwidth
After data_sn1000, if agreeing to by 20MHz adjust bandwidth to 10MHz, confirmation signal ack_ is sent with 10MHz bandwidth
Sn1000 shows that second network equipment has been properly received data data_sn1000.First network equipment receives confirmation signal
After ack_sn1000, carried out data transmission with second network equipment with 10MHz bandwidth.
In scheme provided by the embodiments of the present application, the network equipment can dynamically adjust WLAN chain according to reiving/transmitting state information
The bandwidth on road keeps balance between throughput demand and signal cover demand.Ensuring what WLAN link not will disconnect
Under the premise of, maximumlly meet the needs of throughput.
In another alternative embodiment provided based on Fig. 2A embodiment, as shown in Figure 4 A, after above-mentioned steps 204 also
Include the following steps.In the present embodiment, explanation is introduced to passive adjustment mode.
Step 401, during using WLAN link transmission data, second network equipment obtains reiving/transmitting state information.
Reiving/transmitting state information is used to indicate the state using above-mentioned WLAN link transmit-receive data.Optionally, reiving/transmitting state is believed
Breath includes at least one of the following: received signal strength, sends success rate.Second network equipment of receiving signal strength expression receives
Data signal strength.Sending success rate indicates that second network equipment sends the success rate of data to first network equipment.
Step 402, if reiving/transmitting state information meets preset condition, second network equipment is by the Bandwidth adjustment of WLAN link
For the second bandwidth, and the second information frame is sent to first network equipment using the second bandwidth.
Bandwidth adjustment process in relation to second network equipment, reference can be made to related first network equipment in above-mentioned Fig. 3 A embodiment
Bandwidth adjustment process, the present embodiment repeats no more this.
Step 403, if first network equipment receives the second information frame that second network equipment uses the second bandwidth to send,
Then the second confirmation signal corresponding with the second information frame is sent to second network equipment.
First network equipment is after receiving the second information frame that second network equipment is sent using the second bandwidth, if together
Meaning carries out subsequent data transmission using above-mentioned second bandwidth, then sends the second confirmation signal to second network equipment.Second really
Recognize signal be used to indicate first network equipment agreement the bandwidth of WLAN link is adjusted.First network equipment sends second really
Recognize bandwidth used by signal, sends the second information frame with second network equipment and use the second bandwidth identical.
In a kind of possible embodiment, first network equipment is in the second information for receiving the transmission of second network equipment
After frame, the second confirmation signal directly is sent to second network equipment.In alternatively possible embodiment, first network is set
It is standby after the second information frame for receiving the transmission of second network equipment, detect second information frame received signal strength whether
Greater than predetermined threshold value, if so, the second confirmation signal corresponding with the second information frame is sent to second network equipment, if it is not,
Then the second confirmation signal corresponding with the second information frame is not sent to second network equipment.Predetermined threshold value can be according to practical warp
It tests or experimental data is preset.It is default whether first network equipment is greater than by the received signal strength of the second information frame of detection
Threshold value, it is ensured that the data that the second bandwidth that second network equipment uses is sent can be properly received by first network equipment.
Optionally, if second network equipment is not received by corresponding with the second information frame the of first network equipment transmission
Two confirmation signals, then second network equipment still carries out data communication using original bandwidth.
Optionally, the second confirmation signal is used to indicate first network equipment and has been properly received the second information frame, is used for simultaneously
Show that the agreement of first network equipment is adjusted the bandwidth of WLAN link.
Fig. 4 B is please referred to, a kind of interaction figure of bandwidth adjustment process is illustrated.First network equipment and second
WLAN link is had built up between the network equipment, and is carried out data transmission with 10MHz bandwidth.Second network equipment is with 10MHz band
Width sends data data_sn1000, if sending failure, second network equipment turns down bandwidth to 5MHz, with 5MHz bandwidth weight
It is new to send data data_sn1000.First network equipment receives the data data_ that second network equipment is sent with 5MHz bandwidth
After sn1000, if agreeing to by 10MHz adjust bandwidth to 5MHz, confirmation signal ack_sn1000, table are sent with 5MHz bandwidth
Bright first network equipment has been properly received data data_sn1000.Second network equipment receives confirmation signal ack_sn1000
Afterwards, carried out data transmission with first network equipment with 5MHz bandwidth.
In scheme provided by the embodiments of the present application, the network equipment can dynamically adjust WLAN chain according to reiving/transmitting state information
The bandwidth on road keeps balance between throughput demand and signal cover demand.Ensuring what WLAN link not will disconnect
Under the premise of, maximumlly meet the needs of throughput.
In the following, explanation is introduced to scheme provided by the embodiments of the present application by two examples.
Referring to FIG. 5, in one example, by taking the application scenarios for using smart phone 51 to control unmanned plane 52 as an example.?
Different distances uses different bandwidth, guarantees that operator can obtain bigger control range, recycles unmanned plane 52 in time.When
When the distance between unmanned plane 52 and smart phone 51 are less than 0.1km, 40MHz bandwidth for transmission HD video is used；Work as unmanned plane
When the distance between 52 and smart phone 51 become greater to 0.1km to 0.5km, smart phone 51 turns down band according to reiving/transmitting state information
Bandwidth is turned down to 20MHz and transmits ordinary video by width；When the distance between unmanned plane 52 and smart phone 51 are more than 0.5km,
Smart phone 51 further turns down bandwidth according to reiving/transmitting state information, and bandwidth is turned down to 1MHz, it is ensured that for unmanned plane 52
The control message controlled can be properly received by unmanned plane 52.By the above-mentioned means, can guarantee control message transmissions away from
From farther, increase reliability, avoids causing fortuitous event due to control message loss.
Referring to FIG. 6, in another example, being with the application scenarios communicated between two smart phones 61 and 62
Example.When smart phone 61 apart from smart phone 62 more than 1000 meters when, use 1MHz bandwidth carry out text communication；Work as smart phone
61 apart from smart phone 62 at 50 meters to 1000 meters when, use 5MHz bandwidth carry out speech communication；When smart phone 61 is apart from intelligence
When energy mobile phone 62 is less than 50 meters, 10MHz bandwidth is used to carry out video communication.By the above-mentioned means, in different distances using not
Same bandwidth, to be communicated using suitable communication modes.
The above-mentioned angle mainly interacted from first network equipment and second network equipment is to side provided by the embodiments of the present application
Case is described.It is understood that the network equipment (such as first network equipment, second network equipment) is above-mentioned in order to realize
Function, it comprises execute the corresponding hardware configuration of each function and/or software module.In conjunction with implementation disclosed herein
Each exemplary unit and algorithm steps of example description, the embodiment of the present application can be with the combination of hardware or hardware and computer software
Form is realized.Some functions is executed in a manner of hardware or computer software driving hardware actually, depends on technical side
The specific application and design constraint of case.Those skilled in the art can carry out using different methods each specific application
It realizes described function, but this realizes the range it is not considered that the technical solution beyond the embodiment of the present application.
The embodiment of the present application can be according to above method example to the network equipment (such as first network equipment, the second network
Equipment) division that carries out functional unit, for example, each functional unit of each function division can be corresponded to, can also by two or
More than two functions are integrated in a processing unit.Above-mentioned integrated unit both can take the form of hardware realization,
It can realize in the form of software functional units.It should be noted that being signal to the division of unit in the embodiment of the present application
Property, only a kind of logical function partition, there may be another division manner in actual implementation.
Using integrated unit, Fig. 7 A shows one kind of the network equipment involved in above-described embodiment
Possible structural schematic diagram.The network equipment 700 includes: processing unit 702 and communication unit 703.Processing unit 702 is used for net
The movement of network equipment 700 carries out control management.For example, processing unit 702 is used when the network equipment 700 is first network equipment
In supporting the network equipment 700 to execute step 301 of the step 201 into 204, Fig. 3 A in Fig. 2A to 303, and/or for executing
Other steps of techniques described herein.When the network equipment 700 is second network equipment, processing unit 702 is for supporting
The network equipment 700 executes the step 401 in Fig. 4 A to 403, and/or other steps for executing techniques described herein.
Communication unit 703 is used to support the communication of the network equipment 700 Yu other network equipments.The network equipment 700 can also include storage
Unit 701, program code and data for storage networking device 700.
Wherein, processing unit 702 can be processor or controller, such as can be central processing unit (Central
Processing Unit, CPU), general processor, digital signal processor (Digital Signal Processor, DSP),
Specific integrated circuit (Application-Specific Integrated Circuit, ASIC), field programmable gate array
It is (Field Programmable Gate Array, FPGA) or other programmable logic device, transistor logic, hard
Part component or any combination thereof.It may be implemented or execute to combine and various illustratively patrol described in present disclosure
Collect box, module and circuit.The processor is also possible to realize the combination of computing function, such as includes one or more micro- places
Manage device combination, DSP and the combination of microprocessor etc..Communication unit 703 can be communication interface, transceiver, transmission circuit etc.,
Wherein, communication interface is to be referred to as, and may include between one or more interfaces, such as first network equipment and second network equipment
Interface.Storage unit 701 can be memory.
When processing unit 702 is processor, communication unit 703 is communication interface, when storage unit 701 is memory, this
Apply for that the network equipment involved in embodiment can be the network equipment shown in Fig. 7 B.
Refering to shown in Fig. 7 B, which includes: processor 712, communication interface 713, memory 711.It is optional
Ground, the network equipment 710 can also include bus 714.Wherein, communication interface 713, processor 712 and memory 711 can lead to
Cross the interconnection of bus 714；Bus 714 can be Peripheral Component Interconnect standard (Peripheral Component
Interconnect, abbreviation PCI) bus or expanding the industrial standard structure (Extended Industry Standard
Architecture, abbreviation EISA) bus etc..The bus 714 can be divided into address bus, data/address bus, control bus etc..
Only to be indicated with a thick line in Fig. 7 B, it is not intended that an only bus or a type of bus convenient for indicating.
The network equipment shown in above-mentioned Fig. 7 A or Fig. 7 B can be first network equipment or second network equipment.
The step of method in conjunction with described in the embodiment of the present application disclosure can realize in a manner of hardware, can also be with
It is that the mode of software instruction is executed by processor to realize.Software instruction can be made of corresponding software module, software module
Random access memory (Random Access Memory, RAM), flash memory, read-only memory (Read can be stored on
Only Memory, ROM), Erasable Programmable Read Only Memory EPROM (Erasable Programmable ROM, EPROM), electricity can
Erasable programmable read-only memory (Electrically EPROM, EEPROM), register, hard disk, mobile hard disk, CD-ROM
(CD-ROM) or in the storage medium of any other form well known in the art.A kind of illustrative storage medium is coupled to place
Device is managed, to enable a processor to from the read information, and information can be written to the storage medium.Certainly, it stores
Medium is also possible to the component part of processor.Pocessor and storage media can be located in ASIC.In addition, the ASIC can position
In the network equipment.Certainly, pocessor and storage media can also be used as discrete assembly and be present in the network equipment.
Those skilled in the art it will be appreciated that in said one or multiple examples, retouched by the embodiment of the present application
The function of stating can be realized with hardware, software, firmware or their any combination.It when implemented in software, can be by this
A little functions storages in computer-readable medium or as on computer-readable medium one or more instructions or code into
Row transmission.Computer-readable medium includes computer storage media and communication media, and wherein communication media includes convenient for from one
Any medium of the place to another place transmission computer program.Storage medium can be general or specialized computer and can deposit
Any usable medium taken.
Above-described specific embodiment carries out the purpose of the embodiment of the present application, technical scheme and beneficial effects
It is further described, it should be understood that the foregoing is merely the specific embodiments of the embodiment of the present application, and does not have to
In limit the embodiment of the present application protection scope, it is all on the basis of the technical solution of the embodiment of the present application, done it is any
Modification, equivalent replacement, improvement etc. should all include within the protection scope of the embodiment of the present application.
Claims (11)
1. a kind of WLAN WLAN link establishing method, which is characterized in that the described method includes:
First network equipment uses initial bandwidth broadcast probe requests thereby；
The first network equipment detects whether to receive the detection corresponding with the probe requests thereby of second network equipment transmission
Response；
If not receiving the probe response, the first network equipment uses adjustment bandwidth broadcast probe requests thereby, and again
Since described the step of detecting whether to receive the probe response corresponding with the probe requests thereby that second network equipment sends
It executes；Wherein, the adjustment bandwidth refers to bandwidth more smaller than the bandwidth of last time use；
If receiving the probe response, the first network equipment and second network equipment establish WLAN link,
In, the bandwidth of the WLAN link is to receive used bandwidth when the probe response.
2. the method according to claim 1, wherein the initial bandwidth is 20MHz；It is not receiving and is using
In the case where the corresponding probe response of probe requests thereby that the initial bandwidth is sent, the adjustment bandwidth is 1MHz.
3. the method according to claim 1, wherein the method also includes:
The first network equipment sends the first bandwidth ability information to second network equipment, and receives second network
The second bandwidth ability information that equipment is sent；
Wherein, the first bandwidth ability information is used to indicate the bandwidth type that the first network equipment is supported, and described second
Bandwidth ability information is used to indicate the bandwidth type that second network equipment is supported.
4. method according to any one of claims 1 to 3, which is characterized in that the first network equipment and described second
The network equipment is established after WLAN link, further includes:
During using the WLAN link transmission data, the first network equipment obtains reiving/transmitting state information, described
Reiving/transmitting state information is used to indicate the state using the WLAN link transmit-receive data；
If the reiving/transmitting state information meets preset condition, the Bandwidth adjustment of the WLAN link is the by first network equipment
One bandwidth, and first information frame is sent to second network equipment using first bandwidth；
If it is sending with the first information frame corresponding first that the first network equipment receives second network equipment
Confirmation signal, then the first network equipment, which determines, uses the first bandwidth for transmission data.
5. method according to any one of claims 1 to 3, which is characterized in that the first network equipment and described second
The network equipment is established after WLAN link, further includes:
If the first network equipment receives the second information frame that second network equipment uses the second bandwidth to send, to
Second network equipment sends the second confirmation signal corresponding with second information frame；Wherein, second bandwidth is by institute
Stating second network equipment will obtain after the Bandwidth adjustment of the WLAN link.
6. a kind of first network equipment, which is characterized in that the first network equipment includes: processing unit and communication unit；
The communication unit, for using initial bandwidth broadcast probe requests thereby；
The processing unit, for detecting whether receiving the detection corresponding with the probe requests thereby of second network equipment transmission
Response；
The communication unit, if being also used to not receive the probe response, using adjustment bandwidth broadcast probe requests thereby, and by
The processing unit is again from the spy corresponding with the probe requests thereby for detecting whether to receive the transmission of second network equipment
The step of surveying response starts to execute；Wherein, the adjustment bandwidth refers to bandwidth more smaller than the bandwidth of last time use；
The processing unit establishes WLAN link with second network equipment if being also used to receive the probe response,
Wherein, the bandwidth of the WLAN link is to receive used bandwidth when the probe response.
7. the network equipment according to claim 6, which is characterized in that the initial bandwidth is 20MHz；Do not receive with
In the case where the corresponding probe response of probe requests thereby sent using the initial bandwidth, the adjustment bandwidth is 1MHz.
8. the network equipment according to claim 6, which is characterized in that
The communication unit is also used to send the first bandwidth ability information to second network equipment, and receives described second
The second bandwidth ability information that the network equipment is sent；
Wherein, the first bandwidth ability information is used to indicate the bandwidth type that the first network equipment is supported, and described second
Bandwidth ability information is used to indicate the bandwidth type that second network equipment is supported.
9. according to the described in any item network equipments of claim 6 to 8, which is characterized in that
The processing unit is also used to obtain reiving/transmitting state information, institute during using the WLAN link transmission data
It states reiving/transmitting state information and is used to indicate the state for using the WLAN link transmit-receive data；
The processing unit, if being also used to the reiving/transmitting state information meets preset condition, by the bandwidth of the WLAN link
It is adjusted to the first bandwidth, and the first letter is sent to second network equipment using first bandwidth by the communication unit
Cease frame；
The processing unit, if being also used to the communication unit receives believing with described first for second network equipment transmission
Cease corresponding first confirmation signal of frame, it is determined that use the first bandwidth for transmission data.
10. according to the described in any item network equipments of claim 6 to 8, which is characterized in that
The communication unit, if being also used to receive the second information frame that second network equipment uses the second bandwidth to send,
Then the second confirmation signal corresponding with second information frame is sent to second network equipment；Wherein, second bandwidth
It will be obtained after the Bandwidth adjustment of the WLAN link by second network equipment.
11. a kind of computer storage medium, which is characterized in that be stored with executable instruction, institute in the computer storage medium
State executable instruction for execute such as method described in any one of claim 1 to 5.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710527445.9A CN109429359B (en) | 2017-06-30 | 2017-06-30 | WLAN link establishment method and equipment |
| PCT/CN2018/093657 WO2019001568A1 (en) | 2017-06-30 | 2018-06-29 | Method and device for establishing wlan link |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710527445.9A CN109429359B (en) | 2017-06-30 | 2017-06-30 | WLAN link establishment method and equipment |
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| Publication Number | Publication Date |
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| CN109429359A true CN109429359A (en) | 2019-03-05 |
| CN109429359B CN109429359B (en) | 2021-02-09 |
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| WO (1) | WO2019001568A1 (en) |
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| CN109429359B (en) | 2021-02-09 |
| WO2019001568A1 (en) | 2019-01-03 |
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