CN108243484A - Cut-in method, access point AP and site STA in WLAN - Google Patents
Cut-in method, access point AP and site STA in WLAN Download PDFInfo
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- CN108243484A CN108243484A CN201611214768.4A CN201611214768A CN108243484A CN 108243484 A CN108243484 A CN 108243484A CN 201611214768 A CN201611214768 A CN 201611214768A CN 108243484 A CN108243484 A CN 108243484A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/16—Discovering, processing access restriction or access information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/10—Small scale networks; Flat hierarchical networks
- H04W84/12—WLAN [Wireless Local Area Networks]
Abstract
The embodiment of the present application discloses cut-in method, access point AP and site STA in a kind of WLAN WLAN, can shorten the turn-on time of STA, and this method includes：The aggregated channel information of the access point AP notice site STAs AP, the channel parameter of the aggregated channel information instruction aggregated channel of the AP, the aggregated channel broadcast the working channel information of multiple AP for multiple AP；The AP broadcasts the working channel information of the AP in the aggregated channel, so that the STA, according to the working channel information access of the AP AP, the working channel information of the AP indicates the channel parameter of the working channel of the AP.
Description
Technical field
This application involves the communications field, and more particularly, in WLAN cut-in method, access point AP and
Site STA.
Background technology
WLAN (full name：Wireless Local Area Network, referred to as：WLAN in), due to access point
(full name：Access Point, referred to as：AP limited coverage area), website (full name：Station, referred to as：STA) distance AP is got over
Remote signal strength is smaller, and STA detects that AP signal qualities can attempt to look for new AP, Ran Houtong less than predetermined threshold on the move
New AP transmission data are crossed, this process is known as roaming switch.
STA accesses AP mainly includes procedure below：Comprising service discovery, link authentication, terminal association, access authentication and secret
Key is negotiated.Wherein, service discovery (being referred to as channel discovery or scan channel) is that STA has found there is which AP around STA
Potential access target can be become, and find the feature of these AP (including channel number, channel width, coding mode, the speed of support
Rate etc.) process.
The overlong time of current STA accesses AP (or being referred to as access WLAN) is difficult to meet the real-time industry such as low time delay
The demand of business.Many researchs find that service discovery occupies the turn-on time of the overwhelming majority, and the whole time of roaming switch exists
70ms to 600ms, and the time that service discovery occupies in 50ms to 540ms, therefore, the most of the time is used in the mistake of service discovery
Cheng Zhong.And the switching time for the real time business such as voice and video meeting hundreds of milliseconds of switching time is long, and it is high-quality
The interval between voice packet is measured no more than 20ms, the interval of the parlor of 4M video conferences requirement is less than 5ms, and the video quality the high right
The space requirement of parlor is smaller.
To solve the above-mentioned problems, 802.11k proposes some improved methods, for example, the interaction neighbor AP between AP and STA
Information, the channel where neighbor AP need to be only scanned when STA needs roaming switch, it is possible to reduce unnecessary scan channel,
So as to reduce the time of service discovery (working channel for finding AP).Therefore, 802.11k is to scan channel by reducing STA
Quantity reach reduce channel scan time (i.e. service discovery time), so as to accelerate STA access WLAN.But usually WLAN is adopted
It is covered with honeycomb fashion, the neighbours of an AP usually have multiple, as shown in Figure 1, intermediate AP has 6 neighbor APs, that is, have 6 phases
Adjacent channel.When STA is removed from intermediate AP, moving direction is arbitrary, which AP can not know will be associated with again,
Therefore, it is necessary to carry out the scanning of this 6 adjacent channels, therefore, STA still needs to carry out multiple scan channel, so as to still need
The a large amount of service discovery time is spent, leads to the overlong time of STA accesses AP.
Invention content
The embodiment of the present application provides cut-in method, access point AP and site STA in a kind of WLAN, can subtract
The time of few website access AP.
In a first aspect, the cut-in method in a kind of WLAN is provided, including:
The aggregated channel information of AP described in access point AP notice site STAs, the aggregated channel information instruction aggregation of the AP
The channel parameter of channel, the aggregated channel broadcast the working channel information of the multiple AP for multiple AP；
The AP broadcasts the working channel information of the AP in the aggregated channel, so that the STA is according to the AP's
The working channel information of AP described in working channel information access, the AP indicate the channel parameter of the working channel of the AP.
Optionally, in the embodiment of the present application, the aggregated channel of the working channel information for being used for multiple AP broadcast AP can
Manager to be WLAN is preconfigured, for example, the manager of the WLAN can select one in the available channel of WLAN
It can also be determined by controller as aggregated channel or according to the channel status of working channel, for example, the controller can be true
By the larger channel of other channel disturbances as aggregated channel in fixed multiple working channels.
It should be understood that the aggregated channel can be one, for example, can share an aggregated channel with wlan system or be somebody's turn to do
Aggregated channel can also be multiple, for example, the AP of wlan system can be divided into multigroup, the public aggregated channel of every group of AP,
It namely can be the public aggregated channel of multiple AP or the shared aggregated channel of other methods division can also be used
AP, the embodiment of the present application are not restricted this.
In some possible realization methods, the aggregated channel packet of the AP is contained in the AP in the working channel
It is described to gather in the newly-increased domain of the first beacon Beacon frames sent or in aggregation frames broadcast in the aggregated channel of the AP
It is the management frame newly defined to collect frame.
That is, the AP can broadcast the first beacon frame by the working channel in the AP, in first beacon frame
Aggregated channel information comprising the AP alternatively, the AP can also broadcast aggregation frame in the aggregated channel, is included by the aggregation frame
The aggregated channel information of the AP, the aggregation frame can be the management frame newly defined.
In some possible realization methods, the working channel packet of the AP is contained in the AP in the aggregated channel
In the newly-increased domain of 2nd Beacon frames of broadcast or in the aggregation frames broadcasted in the aggregated channel of the AP, the aggregation frame
For the management frame newly defined.
Optionally, in some embodiments, if the AP is only there are one physical channel, the method further includes：
If the physical channel of the AP is currently configured as the working channel of the AP, believe in the AP from the work of the AP
Road is switched to before the aggregated channel, and the AP asks transmission/clear to send RTS/CTS frames or including exempting to compete by transmission
The Beacon frames of parameter sets CF parameter set, interrupt the AP and the data between the associated STA of the AP communicate；
Or
If the physical channel of the AP is currently configured as the aggregated channel, the AP is being switched to from the aggregated channel
Working channel after, the AP by send RTS/CTS frames or exempt from competition terminate CF-End frames, restore the AP and with it is described
Data communication between the associated STA of AP.
The working channel information of the AP includes at least one in following information：The channel of the working channel of the AP
Number, the transmitting of the working channel of the basic service set identification BSSID of the service set SSID of the AP, the AP, the AP
Power, the AP working channel centre frequency, the bandwidth of the working channel of the AP, the AP working channel residue
Access capability, the modulating-coding strategy of working channel of the AP, the AP working channel link loading information.
Optionally, in some embodiments, the aggregated channel information of the AP includes at least one in following information：Institute
State the channel number of aggregated channel, the transmission power of the aggregated channel, the centre frequency of the aggregated channel, the aggregated channel
Bandwidth, the remaining access capability of the aggregated channel, the modulating-coding strategy of the aggregated channel, the aggregated channel chain
Road load information, the SSID of the AP, the AP BSSID.
In some possible realization methods, the aggregated channel information of the AP further includes the working channel information of the AP
Starting sending time and the AP working channel information sending cycle, the AP broadcasts the AP in the aggregated channel
Working channel information, including：
The AP, using the sending cycle as the period, is broadcasted since the starting sending time in the aggregated channel
The working channel information of the AP.
Optionally, which can not also can broadcast with the working channel information of the periodic broadcast AP or discontinuously this
The working channel information of AP, for example, after primary broadcast, the idle very short time broadcasts the working channel letter of the AP again
Breath.The working channel information of the AP is just broadcasted when obtaining interface-free resources or competes interface-free resources according to DCF,
The working channel information of the AP is broadcasted after interface-free resources are obtained.Or can also trigger-type broadcast the AP working channel letter
Breath, on the basis of periodic broadcast, if AP receives probe requests thereby (Probe Request) frame that STA is sent out, is assembling
Probe response (Probe Response) frame is not replied on channel, but the working channel information of the AP can be broadcasted.
Second aspect provides the cut-in method in a kind of WLAN WLAN, including：
Site STA receives the aggregated channel information of access point AP, the aggregated channel information instruction aggregated channel of the AP
Channel parameter, the aggregated channel broadcast the working channel information of the multiple AP for multiple AP；
According to the aggregated channel information of the AP, it is switched to the aggregated channel；
The working channel information of the AP is received in the aggregated channel, the working channel information of the AP indicates the AP
Working channel channel parameter；
According to the working channel information of the AP, the AP is accessed.
Optionally, in some embodiments, the aggregated channel packet of the AP is contained in work of the AP in the AP
In the first beacon Beacon frames that channel is sent or in the aggregation frames broadcasted in the aggregated channel of the AP, the aggregation frame
For the management frame newly defined.
In some possible realization methods, the working channel packet of the AP is contained in the AP in the aggregated channel
In the newly-increased domain of 2nd Beacon frames of broadcast or in the aggregation frames broadcasted in the aggregated channel of the AP, the aggregation frame
For the management frame newly defined.
Optionally, in some embodiments, the working channel information of the AP includes at least one in following information：Institute
State the channel number of the working channel of AP, the service set SSID of the AP, the basic service set identification BSSID of the AP, institute
State the transmission power of the working channel of AP, the centre frequency of the working channel of the AP, the bandwidth of the working channel of the AP, institute
State the working channel of the remaining access capability of the working channel of AP, the modulating-coding strategy of the working channel of the AP, the AP
Link loading information.
In some possible realization methods, the aggregated channel information of the AP includes at least one in following information：
The channel number of the aggregated channel, the transmission power of the aggregated channel, the centre frequency of the aggregated channel, the aggregation letter
The bandwidth in road, the remaining access capability of the aggregated channel, the modulating-coding strategy of the aggregated channel, the aggregated channel
Link loading information, the SSID of the AP, the AP BSSID.
Optionally, in some embodiments, the aggregated channel information of the AP further includes the aggregated channel information of the AP
Starting sending time and the AP aggregated channel information sending cycle, the aggregated channel information according to the AP,
The aggregated channel is switched to, including：
The STA determines that the AP next times send the AP according to the starting sending time and the sending cycle
Aggregated channel information first time；
The second time-switching before the first time is to the aggregated channel, second time and described first
The time difference of time is less than time threshold.
Therefore, which can determine to send the working channel letter of AP next time according to the starting sending time and sending cycle
The time of breath, so as to slightly the time-switching is to the aggregated channel in advance, and without falling into a long wait in aggregated channel,
It can continue to keep the communication of AP with being currently accessed in the STA of the non-switching time.
The third aspect provides a kind of access point AP, for performing in a first aspect, the possibility of the either side of first aspect
Method in realization method.Specifically, which can include performing in a first aspect, any possible realization of first aspect
The unit of method in mode.
Fourth aspect provides a kind of site STA, for performing second aspect, the possibility of the either side of second aspect
Method in realization method.Specifically, which can include performing second aspect, any possible reality of second aspect
The unit of method in existing mode.
5th aspect, provides a kind of access point AP, including memory and processor, the memory for storing instruction,
The processor is used to perform the instruction of memory storage, and causes the processing to the execution of instruction stored in the memory
Device performs the method in a first aspect, in the arbitrary possible realization method of first aspect.
6th aspect, provides a kind of site STA, and including memory and processor, which for storing instruction, should
Processor is used to perform the instruction of memory storage, and causes the processor to the execution of instruction stored in the memory
Second aspect is performed, the method in the arbitrary possible realization method of second aspect.
7th aspect, provides a kind of computer readable storage medium, for storing computer program, the computer program
Including being used to perform any one method in terms of the first to two or in the arbitrary possible realization method of the first to two aspect
Instruction.
Based on above-mentioned technical proposal, the cut-in method in the WLAN of the embodiment of the present application, access point AP can notify website
The aggregated channel information of the STA AP, the aggregated channel information indicate the channel parameter of aggregated channel, in order to which the STA is according to this
Aggregated channel information switches to the aggregated channel, and then the AP broadcasts the working channel information of the AP, STA in the aggregated channel
The working channel information of the AP can be received in aggregated channel, then according to the working channel information of the AP, accesses the AP, therefore
Avoid the problem of STA scans neighbor channel, causes turn-on time long one by one.
Description of the drawings
Fig. 1 applies to the schematic diagram of the wireless communication system of the embodiment of the present application.
Fig. 2 is the schematic flow chart of the cut-in method in the WLAN according to the embodiment of the present application.
Fig. 3 is the schematic diagram for the process that AP is accessed according to the STA of the embodiment of the present application.
Fig. 4 is the schematic block diagram according to the access point of the embodiment of the present application.
Fig. 5 is the schematic block diagram according to the website of the embodiment of the present application.
Fig. 6 is the schematic block diagram according to the access point of another embodiment of the application.
Fig. 7 is the schematic block diagram according to the website of another embodiment of the application.
Specific embodiment
Below in conjunction with attached drawing, the technical solution in the embodiment of the present application is described.
It should be understood that the application technical solution, can be applied to WLAN or can be used for other need to scan it is multiple
The system that channel is accessed.
Fig. 1 shows the wireless communication system 100 suitable for the embodiment of the present application.The wireless communication system 100 can wrap
Multiple AP are included, for example, AP1~AP6 shown in FIG. 1 etc., multiple AP can be communicated by radio open with STA, this is more
A AP can provide communication overlay for specific geographic area, and communicate with the STA in the overlay area.The nothing
AP in line communication system, can be access point in WLAN or can also be the network equipment such as transfer point in 5G networks
(Transmission Reception Point, referred to as " TRP "), base station, small base station equipment etc., the embodiment of the present application to this not
It is restricted.
The wireless communication system 100 can also include at least one STA, for example, STA1 shown in FIG. 1 and STA2.The nothing
STA in line communication system is alternatively referred to as access terminal, user equipment, subscriber unit, subscriber station, movement station, mobile station, a distant place
It stands, remote terminal, move equipment, user terminal, terminal, wireless telecom equipment, user agent or user apparatus.User equipment can
To be cellular phone, wireless phone, session initiation protocol (full name：Session Initiation Protocol, referred to as：SIP)
Phone, wireless local loop (full name：Wireless Local Loop, referred to as：WLL it) stands, personal digital assistant (full name：
Personal Digital Assistant, referred to as：PDA), there is handheld device, computing device or the company of wireless communication function
It is connected to user equipment in other processing equipments, mobile unit, wearable device and the 5G networks of radio modem etc..
Fig. 1 schematically illustrates 6 AP and 1 STA, and optionally, which can include other numbers
The STA of the AP of amount and other quantity, the embodiment of the present application do not limit this.
Hereinafter, with reference to Fig. 2, the cut-in method in the WLAN according to the embodiment of the present application is described in detail.
It should be understood that Fig. 2 is the schematic flow chart of the cut-in method in the WLAN of the embodiment of the present application, this method is shown
Detailed communication steps or operation, but these steps or operation be only example, other behaviour can also be performed in the embodiment of the present application
Work or the deformation of the various operations in Fig. 2.In addition, each step in Fig. 2 can be respectively according to the difference presented with Fig. 2
Sequence perform, and it is possible to do not really want to perform all operationss in Fig. 2.
Fig. 2 shows the cut-in methods 200 in the WLAN according to the embodiment of the present application of the angle description of slave device interaction
Schematic flow chart.This method 200 can be used for the wireless communication system 100 shown in Fig. 1.
As shown in Fig. 2, this method 200 mainly includes the following steps that：
The aggregated channel information of S210, access point AP notice the site STA AP, the aggregated channel information instruction aggregation of the AP
The channel parameter of channel, the aggregated channel broadcast the working channel information of multiple AP for multiple AP.
Correspondingly, which receives the aggregated channel information of AP.
Wherein, the aggregated channel information of the AP includes at least one in following information：The channel number of the aggregated channel is somebody's turn to do
The remaining access of the transmission power of aggregated channel, the centre frequency of the aggregated channel, the bandwidth of the aggregated channel, the aggregated channel
Ability, the modulating-coding strategy of the aggregated channel, the link loading information of the aggregated channel, the SSID of the AP, the AP
BSSID。
Specifically, the aggregated channel information of the AP notice STA AP, the aggregated channel information indicate the channel of aggregated channel
Parameter, for example, the aggregated channel information can include the information such as the channel number of aggregated channel, transmission power, which can
The working channel information of multiple AP, the channel of the working channel of the working channel information instruction AP of AP are broadcasted for multiple AP
Parameter, for example, the information such as the channel number of the working channel of AP, transmission power.
It should be noted that in the embodiment of the present application, this is used for the aggregation of the working channel information of multiple AP broadcast AP
Channel can be that the manager of WLAN is preconfigured, for example, the manager of the WLAN can select in the available channel of WLAN
One is selected as aggregated channel or can also be determined by controller according to the channel status of working channel, for example, the controller
It can determine in multiple working channels by the larger channel of other channel disturbances as aggregated channel.
Optionally, the bandwidth of the aggregated channel could be provided as 20MHz or can also be more than or less than 20MHz, this is poly-
The centre frequency and bandwidth for collecting channel can also be set by the manager of WLAN, and the embodiment of the present application is not restricted this.
It should be understood that in the embodiment of the present application, which can be one, for example, one can be shared with wlan system
A aggregated channel or the aggregated channel can also be multiple, for example, the AP of wlan system can be divided into multigroup, every group of AP
A public aggregated channel, that is, can be the public aggregated channel of multiple AP or can also using other methods draw
Divide the AP of shared aggregated channel, the embodiment of the present application is not restricted this.
As a kind of possible realization method, the aggregated channel information of the AP can be contained in work of the AP in the AP and believe
In the first beacon Beacon frames that road is sent or in aggregation frames broadcast in the aggregated channel of the AP, the aggregation frame is newly defines
Management frame.
That is, the AP can broadcast the first beacon frame by the working channel in the AP, in first beacon frame
Aggregated channel information comprising the AP, to notify the aggregated channel information of the STA AP.Optionally, the aggregated channel letter of the AP
Breath can be contained in the newly-increased domain of the first Beacon frames, for example, one or more can be increased newly in the first Beacon frames
Domain includes the aggregated channel information of the AP.Alternatively, the AP can also broadcast aggregation frame in the aggregated channel, pass through the aggregation frame
Aggregated channel information comprising the AP, the aggregation frame can be the management frame newly defined.For example, existing 802.11 2015 standards
In have the management frame subtypes of 2 reservations, be 0111 and 1111 respectively (binary system or represented using other types), can
Using one of management frame subtype as aggregation frame, by the aggregated channel information that the AP is included in the aggregation frame.
Optionally, AP can have at least two physical channels, which can work at the same time, wherein one
A to can be used for aggregated channel, therefore, which need not carry out the switching of working channel and aggregated channel, if but there are one AP
Physical channel, the i.e. working channel and aggregated channel need to share a physical channel, and this method 200 can also include at this time：
If the physical channel of the AP is currently configured as the working channel of the AP, believe in the AP from the work of the AP
Road is switched to before the aggregated channel, and the AP asks transmission/clear to send RTS/CTS frames or including exempting to compete by transmission
The Beacon frames of parameter sets CF parameter set, interrupt the AP and the data between the associated STA of the AP communicate；
Or
If the physical channel of the AP is currently configured as the aggregated channel, the AP is being switched to from the aggregated channel
Working channel after, the AP by send RTS/CTS frames or exempt from competition terminate CF-End frames, restore the AP and with it is described
Data communication between the associated STA of AP.
That is, when AP is only there are one during physical channel, if the AP needs to broadcast the working channel information of AP, need
The switching from working channel to aggregated channel is carried out, before aggregated channel is switched to, which can send request transmission/removing hair
Send (full name：Request to Send/Clear to Send, referred to as：RTS/CTS) frame or can by send include exempt from it is competing
Strive (full name：Contention-Free, referred to as：CF) the Beacon frames declaration channel of parameter set enters non-competing rank
Section, temporarily interrupts the AP and the data between the associated STA of the AP communicates.The working channel letter of the AP has been broadcasted in aggregated channel
After breath, which needs to switch to working channel from aggregated channel, and after switching to working channel, which can send RTS frames or NAV
It is worth smaller CTS frames or competition end CF-End frames can also be exempted from by transmission and declares that exempting from the competitive stage terminates, and restores the AP
And the data between the associated STA of the AP communicate.
Optionally, if the AP is after aggregated channel switches to working channel, if the AP has found the NAV values in CTS frames,
Incoming carrier is intercepted multiple access/conflict avoidance (full name by STA：Carrier Sense Multiple Access with
Collision Avoidance, referred to as：CSMA/CA), i.e. NAV is smaller value, at this point, the AP can not send the RTS frames
Or the smaller CTS frames of NAV values.
If it should be understood that the aggregated channel information can be preconfigured, i.e. which channel AP and STA know for assembling
Channel, at this point, the AP can not have to the notice STA aggregated channel information, therefore, the embodiment of the present application is in aggregated channel information
In the case of being pre-configured with, it may not be necessary to perform the S210.
S220, STA are switched to the aggregated channel according to the aggregated channel information of the AP.
Specifically, after STA knows the aggregated channel information of AP, the aggregation that can be included according to the aggregated channel information
The channel number of channel switches to the aggregated channel.
If it should be understood that the aggregated channel information can be preconfigured, at this point, the S220 can be the STA according in advance
The aggregated channel information of configuration, switches to the aggregated channel.
Optionally, which can also include the aggregation of the AP other than it can include above-mentioned channel parameter
Channel information further includes the sending cycle of the starting sending time of the working channel information of the AP and the working channel information of the AP.
At this point, the S220 can further include：
The STA determines that the AP sends the aggregated channel of the AP next time according to the starting sending time and the sending cycle
The first time of information；
The second time-switching before the first time to the aggregated channel, second time and the first time when
Between difference be less than time threshold.
Specifically, since AP originating sending time, can periodically broadcast the working channel information of the AP, then should
STA can include originating sending time and sending cycle according to the aggregated channel information, determine nearest apart from current time
The first time of the working channel information of AP is sent, then the STA can be in the second time-switching before the first time extremely
The aggregation information carries out the reception of the working channel information of AP, this is less than time threshold with the time difference of the second time at the first time
Value, the time threshold can be 1ms or 2ms etc., and the embodiment of the present application is not construed as limiting.Therefore, which does not have to fall into a long wait
Aggregated channel, and need to only shift to an earlier date the reception that seldom time-switching carries out the working channel information of AP to aggregated channel, further
Reduce the turn-on time of STA.
S230, the AP broadcast the working channel information of the AP in the aggregated channel.
Correspondingly, STA receives the working channel information of AP in aggregated channel.
Optionally, the working channel information of the AP includes at least one in following information：The working channel of the AP
Channel number, the service set SSID of the AP, the basic service set identification BSSID of the AP, the AP working channel
Transmission power, the AP working channel centre frequency, the bandwidth of the working channel of the AP, the AP working channel
Remaining access capability, the modulating-coding strategy of working channel of the AP, the AP working channel link loading information.
As a kind of possible realization method, the working channel packet of the AP is contained in what the AP was broadcasted in the aggregated channel
In the newly-increased domain of 2nd Beacon frames or in aggregation frame that the AP is broadcasted in the aggregated channel, which is the pipe newly defined
Manage frame.
That is, the AP can be by broadcasting the second beacon frame in aggregated channel, being included in second beacon frame should
The working channel information of AP, to notify the working channel information of the STA AP.Optionally, the working channel information of the AP can be with
It is contained in the newly-increased domain of the 2nd Beacon frames, for example, one or more domains can be increased in the 2nd Beacon frames newly to include
The working channel information of the AP, optionally, the 2nd Beacon frames can also include indication field, which is used to indicate
The access capability of the aggregated channel is zero, so as to which the working channel for indicating STA to AP is accessed.Or the AP can also be
Aggregated channel broadcast aggregation frame, the working channel information of the AP is included by the aggregation frame, which can be described above
Management frame, i.e. the aggregated channel information of the AP and the working channel information of AP can be all contained in the aggregation frame.
Optionally, which can not also can broadcast with the working channel information of the periodic broadcast AP or discontinuously this
The working channel information of AP, for example, after primary broadcast, the idle very short time broadcasts the working channel letter of the AP again
Breath.The working channel information of the AP is just broadcasted when obtaining interface-free resources or competes interface-free resources according to DCF,
The working channel information of the AP is broadcasted after interface-free resources are obtained.Or can also trigger-type broadcast the AP working channel letter
Breath, on the basis of periodic broadcast, if AP receives probe requests thereby (Probe Request) frame that STA is sent out, is assembling
Probe response (Probe Response) frame is not replied on channel, but the working channel information of the AP can be broadcasted.
Optionally, if the aggregated channel information includes the starting sending time of the working channel information of the AP and the work of the AP
Make the sending cycle of channel information.
So at this point, the S230 can further include：
The AP is since the starting sending time, and using the sending cycle as the period, the work of the AP is broadcasted in the aggregated channel
Make channel information.
That is, since the AP can be originating sending time, the working channel information of the periodic broadcast AP.
Therefore, which can determine to send the working channel letter of AP next time according to the starting sending time and sending cycle
The time of breath, so as to slightly the time-switching is to the aggregated channel in advance, and without falling into a long wait in aggregated channel,
It can continue to keep the communication of AP with being currently accessed in the STA of the non-switching time.
Optionally share multiple AP of an aggregated channel with the AP and can send each AP's with same sending cycle
Working channel information, but the starting sending time of each AP is staggered.The starting sending time and sending cycle information can
To be contained in the beacon frame of AP broadcast, after STA receives beacon frame, can be calibrated according to the timestamp in the beacon frame
The local zone time of STA keeps synchronous with AP, only need slightly Pre-handoff to the aggregated channel.
S240, STA access the AP according to the working channel information of the AP.
Specifically, the STA accesses the AP according to the working channel information of the AP of reception.For example, the working channel of the AP
Information, which includes information, the STA such as the channel number of the working channel of the AP, the access capability of the AP, to be believed according to the work of the AP
Road information switches to the working channel of the AP, completes subsequent access and data transmission procedure.
With reference to topological diagram shown in Fig. 3, the cut-in method in the WLAN of the embodiment of the present application is introduced.
As shown in figure 3, AP1 and AP2 share an aggregated channel, the working channel of the AP1 is channel 1, and the work of AP2 is believed
Road is channel 6, and aggregated channel is channel 142.As shown in figure 3, it is (poly- to channel 142 to switch channel in 03 point of 00 second 00 millisecond of STA
Collect channel), listen to AP1 transmission working channel information (e.g., including AP working channels number be 1, BSSID：
441122334455), then STA is switched to channel 1, in 03 point of 00 second 03 millisecond of access AP1, then carries out data with AP1 and leads to
Letter；When STA leaves AP1 close to AP2, STA determines to need roaming switch, switches channel to letter in 07 point of 10 seconds 03 millisecond of STA
Road 142 (aggregated channel) is begun listening for, in 07 point of 10 seconds 04 millisecond of working channel information for listening to AP2 transmissions (e.g., including
AP working channels are channel 6, BSSID：440011223344), then, STA is switched to channel 6 from channel 142,07 point 10 seconds
08 millisecond of access AP2, then with AP2 into row data communication.
More than, the cut-in method in the WLAN of the embodiment of the present application is described in detail with reference to Fig. 2 and Fig. 3.Hereinafter, combine figure
4 to Fig. 7 are described in detail the access device in the WLAN according to the embodiment of the present application.
The embodiment of the present application proposes a kind of access point, and the schematic block diagram of the access point can be as shown in Figure 4.Fig. 4 is root
According to the schematic block diagram of the access point 400 of the embodiment of the present application.As shown in figure 4, the access point 400 includes：410 He of transmitting element
Processing unit 420.
Specifically, connecing in the cut-in method 200 which may correspond in the WLAN according to the embodiment of the present application
Access point, the access point 400 can include the unit for performing the method that 200 access point of method performs in Fig. 2.Also, this connects
Each unit and other above-mentioned operation and/or functions in access point 400 are respectively in order to realize the corresponding flow of method 200 in Fig. 2
Succinct, details are not described herein.
The embodiment of the present application proposes a kind of website, and the schematic block diagram of the website can be as shown in Figure 5.Fig. 5 is according to this
Apply for the schematic block diagram of the website 500 of embodiment.As shown in figure 5, the website 500 includes：Receiving unit 510 and processing unit
520。
Specifically, which may correspond to the station in the cut-in method 200 in the WLAN according to the embodiment of the present application
Point, the website 500 can include the unit of method performed for the website for performing method 200 in Fig. 2.Also, the website 500
In each unit and other above-mentioned operation and/or functions respectively in order to realize the corresponding flow of method 200 in Fig. 2, for sake of simplicity,
Details are not described herein.
The embodiment of the present application also proposed a kind of access point, and the schematic block diagram of the access point can be as shown in Figure 6.Fig. 6 is
According to the schematic block diagram of the access point 600 of another embodiment of the application.As shown in fig. 6, the access point 600 includes：Transceiver
610th, processor 620, memory 630.Wherein, the transceiver 610, processor 620 and memory 630 pass through internal connecting path
It communicates, transmits control and/or data-signal, for storing instruction, which is used to perform this memory 630
The instruction that memory 630 stores, to control 610 receiving and transmitting signal of transceiver.Wherein, memory 630 can be configured at processor 620
In, it can also be independently of processor 620.
Specifically, connecing in the cut-in method 200 which may correspond in the WLAN according to the embodiment of the present application
Access point, the access point 600 can include the solid element of method performed for the access point for performing method 200 in Fig. 2.And
And each solid element in the access point 600 and other above-mentioned operation and/or functions are respectively in order to realize method 200 in Fig. 2
Corresponding flow, for sake of simplicity, details are not described herein.
The embodiment of the present application also proposed a kind of website, and the schematic block diagram of the website can be as shown in Figure 7.Fig. 7 is basis
The schematic block diagram of the website 700 of another embodiment of the application.As shown in fig. 7, the website 700 includes：Transceiver 710, processing
Device 720, memory 730.Wherein, the transceiver 710, processor 720 and memory 730 are mutually communicated by internal connecting path
Letter transmits control and/or data-signal, and for storing instruction, which is used to perform the memory memory 730
The instruction of 730 storages, to control 710 receiving and transmitting signal of transceiver.Wherein, memory 730 can be configured in processor 720,
It can be independently of processor 720.
Specifically, which may correspond to the station in the cut-in method 200 in the WLAN according to the embodiment of the present application
Point, the website 700 can include the solid element for performing the method that 200 website of method performs in Fig. 2.Also, the website
Each solid element and other above-mentioned operation and/or functions in 700 are respectively in order to realize the corresponding flow of method 200 in Fig. 2
Succinct, details are not described herein.
It should be understood that the processor in the embodiment of the present application can be a kind of IC chip, there is the processing energy of signal
Power.During realization, each step of above method embodiment can by the integrated logic circuit of the hardware in processor or
The instruction of person's software form is completed.Above-mentioned processor can be central processing unit (Central Processing Unit,
Referred to as " CPU "), the processor can also be other general processors, digital signal processor (Digital Signal
Processor, referred to as " DSP "), application-specific integrated circuit (Application Specific Integrated Circuit, letter
Claim " ASIC "), ready-made programmable gate array (Field Programmable Gate Array, referred to as " FPGA ") or other
Programmable logic device, discrete gate or transistor logic, discrete hardware components.It can realize or perform the application reality
Apply disclosed each method, step and the logic diagram in example.General processor can be that microprocessor or the processor also may be used
To be any conventional processor etc..The step of method with reference to disclosed in the embodiment of the present application, can be embodied directly in hardware and translate
Code processor performs completion or performs completion with the hardware in decoding processor and the combination of software device.Software device can be located at
Random access memory, flash memory, read-only memory, programmable read only memory or electrically erasable programmable memory, register etc.
In the storage medium of this field maturation.The storage medium is located at memory, and processor reads the information in memory, hard with reference to it
Part completes the step of above method.
It should also be understood that the memory in the embodiment of the present application can be volatile memory or nonvolatile memory or
It may include both volatile and non-volatile memories.Wherein, nonvolatile memory can be read-only memory (Read-
Only Memory, referred to as " ROM "), programmable read only memory (Programmable ROM, referred to as " PROM "), it is erasable can
Program read-only memory (Erasable PROM, referred to as " EPROM "), electrically erasable programmable read-only memory
(Electrically EPROM, referred to as " EEPROM ") or flash memory.Volatile memory can be random access memory
(Random Access Memory, referred to as " RAM "), is used as External Cache.By exemplary but be not restricted theory
Bright, the RAM of many forms can be used, such as static RAM (Static RAM, referred to as " SRAM "), dynamic random are deposited
Access to memory (Dynamic RAM, referred to as " DRAM "), Synchronous Dynamic Random Access Memory (Synchronous DRAM, abbreviation
" SDRAM), double data speed synchronous dynamic RAM (Double Data Rate SDRAM, referred to as " DDR
SDRAM "), enhanced Synchronous Dynamic Random Access Memory (Enhanced SDRAM, referred to as " ESDRAM "), synchronized links move
State random access memory (Synchlink DRAM, referred to as " SLDRAM ") and direct rambus random access memory
(Direct Rambus RAM, referred to as " DR RAM ").It should be noted that the memory of system and method described herein is intended to include
But it is not limited to the memory of these and any other suitable type.
During realization, each step of the above method can by the integrated logic circuit of the hardware in processor or
The instruction of software form is completed.The step of method with reference to disclosed in the embodiment of the present application, can be embodied directly in hardware processor
It performs completion or performs completion with the hardware in processor and the combination of software device.Software device can be located at random access memory, dodge
It deposits, read-only memory, this fields such as programmable read only memory or electrically erasable programmable memory, register are ripe to deposit
In storage media.The storage medium is located at memory, and processor reads the information in memory, and the above method is completed with reference to its hardware
The step of.To avoid repeating, it is not detailed herein.
The embodiment of the present application also proposed a kind of computer readable storage medium, the computer-readable recording medium storage one
A or multiple programs, the one or more program include instruction, and the instruction is when the portable electronic for being included multiple application programs
When equipment performs, the method for portable electronic device execution embodiment illustrated in fig. 2 can be made.
Those of ordinary skill in the art may realize that each exemplary lists described with reference to the embodiments described herein
Member and algorithm steps can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually
It is performed with hardware or software mode, specific application and design constraint depending on technical solution.Professional technician
Described function can be realized using distinct methods to each specific application, but this realization is it is not considered that exceed
Scope of the present application.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit can refer to the corresponding process in preceding method embodiment, and details are not described herein.
In several embodiments provided herein, it should be understood that disclosed systems, devices and methods, it can be with
It realizes by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the unit
It divides, only a kind of division of logic function can have other dividing mode, such as multiple units or component in actual implementation
It may be combined or can be integrated into another system or some features can be ignored or does not perform.Another point, it is shown or
The mutual coupling, direct-coupling or communication connection discussed can be the indirect coupling by some interfaces, device or unit
It closes or communicates to connect, can be electrical, machinery or other forms.
The unit illustrated as separating component may or may not be physically separate, be shown as unit
The component shown may or may not be physical unit, you can be located at a place or can also be distributed to multiple
In network element.Some or all of unit therein can be selected according to the actual needs to realize the mesh of this embodiment scheme
's.
In addition, each functional unit in each embodiment of the application can be integrated in a processing unit, it can also
That each unit is individually physically present, can also two or more units integrate in a unit.
If the function is realized in the form of SFU software functional unit and is independent product sale or in use, can be with
It is stored in a computer read/write memory medium.Based on such understanding, the technical solution of the application is substantially in other words
The part contribute to the prior art or the part of the technical solution can be embodied in the form of software product, the meter
Calculation machine software product is stored in a storage medium, is used including some instructions so that a computer equipment (can be
People's computer, server or network equipment etc.) perform each embodiment the method for the application all or part of step.
And aforementioned storage medium includes：USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), arbitrary access are deposited
The various media that can store program code such as reservoir (RAM, Random Access Memory), magnetic disc or CD.
The specific embodiment of the above, only the application, but the protection domain of the application is not limited thereto, it is any
In the technical scope that those familiar with the art discloses in the application, change or replacement can be readily occurred in, should all be contained
It covers within the protection domain of the application.Therefore, the protection domain of the application should be based on the protection scope of the described claims.
Claims (20)
1. a kind of cut-in method in WLAN, which is characterized in that including:
The aggregated channel information of AP described in access point AP notice site STAs, the aggregated channel information instruction aggregated channel of the AP
Channel parameter, the aggregated channel broadcasts the working channel information of the multiple AP for multiple AP；
The AP broadcasts the working channel information of the AP in the aggregated channel, so that work of the STA according to the AP
Channel information accesses the AP, and the working channel information of the AP indicates the channel parameter of the working channel of the AP.
2. according to the method described in claim 1, it is characterized in that, the aggregated channel information of the AP is included in following information
At least one of：The channel number of the aggregated channel, the transmission power of the aggregated channel, the centre frequency of the aggregated channel,
The bandwidth of the aggregated channel, the remaining access capability of the aggregated channel, the aggregated channel modulating-coding strategy, described
The link loading information of aggregated channel, the SSID of the AP, the AP BSSID.
3. according to the method described in claim 2, it is characterized in that, the aggregated channel information of the AP further includes the work of the AP
Make the sending cycle of the starting sending time of channel information and the working channel information of the AP, the AP is in the aggregated channel
The working channel information of the AP is broadcasted, including：
The AP is since the starting sending time, using the sending cycle as the period, described in aggregated channel broadcast
The working channel information of AP.
4. according to the method in any one of claims 1 to 3, which is characterized in that if physical channel there are one the AP,
The method further includes：
If the physical channel of the AP is currently configured as the working channel of the AP, cut in the working channel of the AP from the AP
It shifts to before the aggregated channel, the AP asks transmission/clear to send RTS/CTS frames or including exempting from contention parameter by transmission
The Beacon frames of set CF parameter set, interrupt the AP and the data between the associated STA of the AP communicate；Or
If the physical channel of the AP is currently configured as the aggregated channel, in the work that the AP is switched to from the aggregated channel
After making channel, the AP terminates CF-End frames by sending RTS/CTS frames or exempting from competition, restores the AP and is closed with the AP
Data communication between the STA of connection.
5. method according to any one of claim 1 to 4, which is characterized in that the aggregated channel information of the AP includes
In the newly-increased domain of the first beacon Beacon frames sent in the AP in the working channel of the AP or the AP is in the aggregation
In the aggregation frame of channels broadcast, the aggregation frame is the management frame newly defined.
6. the method according to any one of claims 1 to 5, it is characterized in that, the working channel information of the AP includes
In the newly-increased domain of the 2nd Beacon frames broadcasted in the AP in the aggregated channel or the AP is broadcasted in the aggregated channel
Aggregation frame in, it is described aggregation frame be the management frame newly defined.
7. method according to any one of claim 1 to 6, which is characterized in that the working channel information of the AP includes
At least one of in following information：The channel number of the working channel of the AP, the service set SSID of the AP, the AP
Basic service set identification BSSID, the transmission power of working channel of the AP, the AP working channel centre frequency, institute
State the bandwidth of the working channel of AP, the remaining access capability of the working channel of the AP, the AP working channel modulation compile
The link loading information of the working channel of tactful, the described AP of code.
8. a kind of cut-in method in WLAN, which is characterized in that including：
Site STA receives the aggregated channel information of access point AP, the channel of the aggregated channel information instruction aggregated channel of the AP
Parameter, the aggregated channel broadcast the working channel information of the multiple AP for multiple AP；
According to the aggregated channel information of the AP, it is switched to the aggregated channel；
The working channel information of the AP is received in the aggregated channel, the working channel information of the AP indicates the work of the AP
Make the channel parameter of channel；
According to the working channel information of the AP, the AP is accessed.
9. according to the method described in claim 8, it is characterized in that, the aggregated channel information of the AP is included in following information
At least one of：The channel number of the aggregated channel, the transmission power of the aggregated channel, the centre frequency of the aggregated channel,
The bandwidth of the aggregated channel, the remaining access capability of the aggregated channel, the aggregated channel modulating-coding strategy, described
The link loading information of aggregated channel, the SSID of the AP, the AP BSSID.
10. according to the method described in claim 9, it is characterized in that, the aggregated channel information of the AP further includes the AP's
The sending cycle of the starting sending time of aggregated channel information and the aggregated channel information of the AP, it is described according to the poly- of the AP
Collect channel information, be switched to the aggregated channel, including：
The STA determines to send the poly- of the AP AP next times according to the starting sending time and the sending cycle
Collect the first time of channel information；
The second time-switching before the first time is to the aggregated channel, second time and the first time
Time difference be less than time threshold.
11. a kind of access point AP, which is characterized in that including:
Transmitting element, for notifying the aggregated channel information of AP described in site STA, the aggregated channel information instruction aggregation of the AP
The channel parameter of channel, the aggregated channel broadcast the working channel information of the multiple AP for multiple AP；
The transmitting element is additionally operable to：Broadcast the working channel information of the AP in the aggregated channel so that the STA according to
The working channel information of AP described in the working channel information access of the AP, the AP indicate the channel of the working channel of the AP
Parameter.
12. access point according to claim 11, which is characterized in that the aggregated channel information of the AP includes following information
At least one of in：The channel number of the aggregated channel, the transmission power of the aggregated channel, the aggregated channel center frequency
Rate, the bandwidth of the aggregated channel, the remaining access capability of the aggregated channel, the aggregated channel modulating-coding strategy,
The link loading information of the aggregated channel, the SSID of the AP, the AP BSSID.
13. access point according to claim 12, which is characterized in that the aggregated channel information of the AP further includes the AP
Working channel information starting sending time and the AP working channel information sending cycle, the transmitting element is specific
For：
The AP is since the starting sending time, using the sending cycle as the period, described in aggregated channel broadcast
The working channel information of AP.
14. the access point according to any one of claim 11 to 13, which is characterized in that the working channel information of the AP
Including at least one in following information：The service set SSID, described of the channel number of the working channel of the AP, the AP
The basic service set identification BSSID of AP, the transmission power of the working channel of the AP, the AP working channel center frequency
Rate, the bandwidth of the working channel of the AP, the remaining access capability of working channel of the AP, the AP working channel tune
Coding strategy processed, the AP working channel link loading information.
15. the access point according to any one of claim 11 to 14, which is characterized in that the aggregated channel information of the AP
It is contained in the newly-increased domain of the first beacon Beacon frames that the AP is sent in the working channel of the AP or the AP is described
In the aggregation frame of aggregated channel broadcast, the aggregation frame is the management frame newly defined.
16. the access point according to any one of claim 11 to 15, which is characterized in that the working channel information of the AP
It is contained in the newly-increased domain of the 2nd Beacon frames that the AP is broadcasted in the aggregated channel or the AP is in the aggregated channel
In the aggregation frame of broadcast, the aggregation frame is the management frame newly defined.
17. the access point according to any one of claim 11 to 16, which is characterized in that if only there are one physics by the AP
Channel, the transmitting element are additionally operable to：
If the physical channel of the AP is currently configured as the working channel of the AP, cut in the working channel of the AP from the AP
It shifts to before the aggregated channel, transmission/clear to send RTS/CTS frames is asked or including exempting from contention parameter set CF by transmission
The Beacon frames of parameter set, interrupt the AP and the data between the associated STA of the AP communicate；Or
If the physical channel of the AP is currently configured as the aggregated channel, in the work that the AP is switched to from the aggregated channel
After making channel, terminate CF-End frames by sending RTS/CTS frames or exempting from competition, restore the AP and associated with the AP
Data communication between STA.
18. a kind of site STA, which is characterized in that including：
Receiving unit, for receiving the aggregated channel information of access point AP, the aggregated channel information instruction aggregated channel of the AP
Channel parameter, the aggregated channel broadcasts the working channel information of the multiple AP for multiple AP；
The STA for the aggregated channel information according to the AP, is switched to the aggregated channel by processing unit；
The receiving unit is additionally operable to：The working channel information of the AP, the work letter of the AP are received in the aggregated channel
Road information indicates the channel parameter of the working channel of the AP；
The processing unit is additionally operable to：According to the working channel information of the AP, the AP is accessed.
19. website according to claim 18, which is characterized in that the aggregated channel information of the AP is included in following information
At least one of：The channel number of the aggregated channel, the transmission power of the aggregated channel, the aggregated channel center frequency
Rate, the bandwidth of the aggregated channel, the remaining access capability of the aggregated channel, the aggregated channel modulating-coding strategy,
The link loading information of the aggregated channel, the SSID of the AP, the AP BSSID.
20. website according to claim 19, which is characterized in that the aggregated channel information of the AP further includes the AP's
The sending cycle of the starting sending time of aggregated channel information and the aggregated channel information of the AP, the processing unit are also used
In：
According to the starting sending time and the sending cycle, the aggregated channel letter for sending the AP AP next times is determined
The first time of breath；
The second time-switching before the first time is to the aggregated channel, second time and the first time
Time difference be less than time threshold.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611214768.4A CN108243484B (en) | 2016-12-26 | 2016-12-26 | Access method, access point AP and station STA in wireless local area network |
| PCT/CN2017/118086 WO2018121447A1 (en) | 2016-12-26 | 2017-12-22 | Access method in wireless local area network, access point (ap) and station (sta) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611214768.4A CN108243484B (en) | 2016-12-26 | 2016-12-26 | Access method, access point AP and station STA in wireless local area network |
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| Publication Number | Publication Date |
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| CN108243484A true CN108243484A (en) | 2018-07-03 |
| CN108243484B CN108243484B (en) | 2021-04-09 |
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| CN201611214768.4A Active CN108243484B (en) | 2016-12-26 | 2016-12-26 | Access method, access point AP and station STA in wireless local area network |
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| CN (1) | CN108243484B (en) |
| WO (1) | WO2018121447A1 (en) |
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Also Published As
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| WO2018121447A1 (en) | 2018-07-05 |
| CN108243484B (en) | 2021-04-09 |
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