CN106714269A - Access method for edge AP (Access Point) in wireless network and system thereof - Google Patents
Access method for edge AP (Access Point) in wireless network and system thereof Download PDFInfo
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- CN106714269A CN106714269A CN201611024748.0A CN201611024748A CN106714269A CN 106714269 A CN106714269 A CN 106714269A CN 201611024748 A CN201611024748 A CN 201611024748A CN 106714269 A CN106714269 A CN 106714269A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/02—Access restriction performed under specific conditions
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/20—Selecting an access point
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Abstract
The invention provides an access method for an edge AP (Access Point) in a wireless network and a system thereof. The method comprises the steps of receiving first terminal information sent by an AP and storing the first terminal information, wherein the AP is the AP which receives a probe request of a terminal, and the first terminal information comprises a terminal MAC address and a current time stamp; receiving a query request sent by the AP associated with the terminal, wherein the query request comprises the terminal MAC address of the terminal, and the AP generates the query request according to an association request sent by the terminal; judging whether other AP except the AP associated with the terminal probes the terminal or not according to a local database; and judging that the AP associated with the terminal is the edge AP if it is judged that no other AP probes the terminal, and feeding back association response to the terminal, thereby allowing the terminal to access the edge AP. The defect that in a load balance area, the edge AP cannot provide user access or the terminal is allowed to access the edge AP after repeated refuse is solved, and the access experience of a user is improved.
Description
Technical field
The present invention relates to edge AP in wireless access technology field, more particularly to a kind of wireless network cut-in method and its
System.
Background technology
Wireless network generally overlay user needs a certain region, and be by multiple wireless aps (Access Point,
Access point) composition Mesh network (wireless mesh network).As a rule, after user enters the region of wireless network covering, make
Some SSID (Service Set Identifier, service set) is selected with mobile terminal, some BSSID is accessed
The wireless aps of (the IEEE MAC Address of local management), after completing association and wireless authentication, you can use wireless service.
In some wireless network coverage areas, because flow of the people is than larger, user's access amount of each wireless aps not phase
Together, the load of wireless aps is also different, and in general, radio channel needs holding load balanced between each wireless aps, so as to will connect
The terminal for entering high capacity wireless aps is directed in the wireless aps for accessing low-load, and the experience of user is improved with this.
Chinese patent CN105101106A (notification number) is directed to wireless network load balancing, it is proposed that one kind is equal based on load
The method and system of weighing apparatus group.In that patent, group master obtains the load condition of group person AP by multicast message, and issues load
Balance policy is to each crowd of member AP.When user is using mobile terminal requirement some crowd of member AP of association, its load feelings is first judged
Condition, if not reaching threshold value, allows to access；If meeting or exceeding load threshold, do not allow to access, mobile terminal is selected automatically
Select other AP accesses.Chinese patent CN105263167A (notification number) is equally proposed by the intercommunication of certain load condition, from
And determine whether the technical scheme for allowing terminal to access.
But, at load balancing group or the edge of a certain wireless coverage area, mobile terminal can only often be scanned and accessed
To a wireless aps, when this wireless aps meets or exceeds load threshold, the technical scheme proposed in patent CN105263167A
Refusal user can access always, and after the technical scheme proposed in patent CN105101106A then can refuse user at three times, then
User is allowed to access this wireless aps.Regardless of access way, otherwise can cause the user cannot to be accessed wirelessly in network edge
AP, or can cause the user could to be accessed after repeatedly being refused by wireless aps, has had a strong impact on the experience of user.
The content of the invention
Regarding to the issue above, the invention provides the cut-in method and its system of edge AP in a kind of wireless network, effectively
The terminal for solving edge AP in LAN accesses problem.
The technical scheme that the present invention is provided is as follows：
The cut-in method of edge AP in a kind of wireless network, is applied to cloud AC (Cloud Controller, hereinafter referred to as cloud
AC), LAN includes that multiple AP, the multiple AP are connected with cloud AC with terminal communication respectively, and the cut-in method includes：
During S10 receives the first terminal information that AP sends and stores it in local data base, the AP is to receive end
The AP of end detection frame, the first terminal information includes terminal MAC address and current time stamp；
The inquiry request that the AP of S20 receiving terminals association sends, the inquiry request includes the terminal MAC ground of the terminal
Location, and the association request that the AP sends according to terminal generates inquiry request；
Whether S30 judges there are other AP detections to the terminal except the AP of associated terminal according to local data base；
If S40 is judged without other AP detections to the terminal, judge that the AP of terminal association is edge AP, feedback association
Ringing message should allow the terminal to access edge AP to terminal.
It is further preferred that in step S1, in receiving first terminal information that AP sends and being stored, specific bag
Include：
The detection frame of S11AP receiving terminals simultaneously generates first terminal information, and the first terminal information includes terminal MAC
Address and current time stamp；
Terminal MAC address of the S12 in first terminal information is searched in the local database；
If S13 finds the record of the terminal MAC address in the local database, the update of time stamp during this is recorded
It is the current time stamp in first terminal information；
If S14 does not find the record of the terminal MAC address in the local database, one is increased in the local database
The new record of bar, to store the first terminal information.
It is further preferred that also including before step S11：AP obtains second terminal information, in the second terminal information
Including terminal MAC address and terminal signaling intensity, when terminal signaling intensity is more than preset signal strength, then generation includes terminal
The first terminal information of MAC Address and current time stamp is sent to cloud AC.
It is further preferred that in step S1, in receiving first terminal information that AP sends and being stored, also wrap
Include：
S15 real-time detection local data bases, timestamp and default time-out time in record delete local data base
The record of middle time-out.
It is further preferred that also including after step S30：
If S50 judges there are other AP detections to the terminal, the AP for judging terminal association is not edge AP, according to load
The load condition of balance policy or AP further determines whether to allow terminal to access the AP.
It is further preferred that before step S10, also including：
S01 delimited includes the load balancing region of multiple AP, and the load balancing region is managed by cloud AC.
Present invention also offers a kind of access system of edge AP in wireless network, LAN includes multiple AP, described
Multiple AP are connected with cloud AC with terminal communication respectively, and the access system includes：
Cloud AC includes：For receiving and store AP transmission first terminal information and receiving terminal association AP send
The first information receiver module of Query Information, the first terminal information includes terminal MAC address and current time stamp；And use
In judging whether there be judge module of other AP detections to the terminal except the AP of associated terminal according to Query Information；
AP includes the second letter of the detection frame sent for receiving terminal and the association request sent for receiving terminal
Breath receiver module；For extracting terminal MAC address in the detection frame and association request of the reception from the second information receiving module
Information extraction modules；For will include that the first terminal information of terminal MAC address and generation inquiry request are sent to the letter of cloud AC
Breath sending module；And when no other AP detections are judged in cloud AC to the terminal, should be extremely for sound message feedback will to be associated
The associated response module of terminal.
It is further preferred that also including in the cloud AC：
Searching modul, for the terminal MAC address in the first terminal information that is received according to the second information receiving module
Searched in the local database；
Update of time stamp module, if searching modul finds the record of the terminal MAC address in the local database, will
Update of time stamp in the record is the current time stamp in first terminal information；
The newly-increased module of record, if searching modul does not find the record of the terminal MAC address in the local database,
Increase a new record in local data base, to store the first terminal information.
It is further preferred that also including in the cloud AC：
Real-time detection module, for real-time detection local data base；
Interpretation of records module, for timestamp and default time-out time in the record that is detected according to real-time detection module
Delete the record of time-out in local data base.
It is further preferred that also including in AP：
Signal intensity acquisition module, for obtaining terminal signaling intensity according to detection frame；
Comparing module, for terminal signaling intensity and preset signal strength to be compared, when terminal signaling intensity is more than
Preset signal strength, information sending module sends to cloud AC the first terminal signal of generation.
In the cut-in method and access system that the present invention is provided, the spy that each AP receiving terminals send in wireless coverage area
In surveying frame and being reported to cloud AC, including the proximity relations between AP.So, when user accesses this certain AP, Neng Gougen
According to these information of cloud AC, judge whether this terminal is linked into edge AP.If the AP is edge AP, ignore load balancing limit
System, directly allows user to access the AP.If not edge AP, then processed the access of STA by normal load balancing.With this
Solve in load balancing region, edge AP cannot provide the defect that user accesses or repeatedly after refusal terminal could be allowed to access,
Improve user and access experience, provide the user facility.
Brief description of the drawings
Below by clearly understandable mode, preferred embodiment is described with reference to the drawings, to above-mentioned characteristic, technical characteristic,
Advantage and its implementation are further described.
Fig. 1 is a kind of implementation method schematic flow sheet of cut-in method of edge AP in wireless network in the present invention；
Fig. 2 is the cut-in method another embodiment schematic flow sheet of edge AP in wireless network in the present invention；
Fig. 3 is the access system schematic diagram of edge AP in wireless network in the present invention；
Fig. 4 is a kind of implementation method schematic diagram of cloud controller in the present invention；
Fig. 5 is cloud controller another embodiment schematic diagram in the present invention；
Fig. 6 is AP another embodiment schematic diagrames in the present invention.
Drawing reference numeral explanation：
The access system of edge AP in 100- wireless networks, 110- clouds AC, 111- first information receiver module, 112- judges
Module, 113- searching moduls, 114- update of time stamp modules, the newly-increased module of 115- records, 116- real-time detection modules, 117- notes
Record sorting module, the information receiving module of 120-AP, 121- second, 122- information extraction modules, 123- information sending modules, 124-
Associated response module, 125- signal intensity acquisition modules, 126- comparing modules.
Specific embodiment
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, control is illustrated below
Specific embodiment of the invention.It should be evident that drawings in the following description are only some embodiments of the present invention, for
For those of ordinary skill in the art, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing, and obtain other implementation methods.
A kind of implementation method schematic diagram of cut-in method of edge AP in the wireless network for being provided for the present invention as shown in Figure 1,
The specific cut-in method is applied to cloud AC, and include in a local network multiple AP, the plurality of AP respectively with cloud AC and terminal communication
Connection.It can be seen that including in the cut-in method：S10 receives the first terminal information of AP transmissions and is stored
In the local database, AP is the AP for receiving end-probing frame (Probe Request), and first terminal information includes terminal
MAC Address and current time stamp；The inquiry request that the AP of S20 receiving terminals association sends, inquiry request includes the terminal
Terminal MAC address, and association request (Association Request) the generation inquiry request that AP sends according to terminal；S30 roots
Judge whether there are other AP detections to the terminal except the AP of associated terminal according to local data base；If S40 is judged without other
AP detection then judges that the AP of terminal association is edge AP to the terminal, and feedback association rings message (Association
Response) terminal should be allowed to access edge AP to terminal.
Specifically, before step S10, also include：According to user's request, load balancing region, and the load delimited
Equalization region includes multiple AP's, and cloud AC is responsible for and safeguards some AP in load balancing region.
Based on this, in step S1, receive the first terminal information of AP transmissions and specifically included in being stored：
The detection frame of S11AP receiving terminals simultaneously generates first terminal information, first terminal information include terminal MAC address and it is current when
Between stab；Terminal MAC address of the S12 in first terminal information is searched in the local database；If S13 is in local data
The record of the terminal MAC address is found in storehouse, is then current in first terminal information by the update of time stamp in recording
Timestamp；If S14 does not find the record of the terminal MAC address in the local database, one is increased in the local database
The new record of bar, to store the first terminal information.With furthermore, it is understood that in step S1, receiving the first terminal letter that AP sends
Cease and also include in being stored：When S15 real-time detection local data bases, timestamp in record and default time-out
Between delete local data base in time-out record.
In this process, user's handheld terminal moves to the load balancing region of delimitation, is assisted according to IEEE 802.11
View, sends detection frame.An AP or multiple AP in the load balancing region receive the detection frame of terminal transmission, and end is obtained with this
The terminal MAC address at end, obtains first terminal information, and reported cloud AC after adding current time stamp.Cloud AC receives
After one end message, whether identical recordings are had according to the corresponding terminal MAC address inquiry local data base of the timestamp, if not having
Identical recordings are found, then add a line new record in the local database；If having existed, timestamp is updated.In addition, cloud
AC real-time detection local data bases, for every record, according to timestamp and default time-out time in record, such as 3s (second) sentences
It is disconnected whether to delete respective record.Such as, when time-out reaches 3s, this record is removed automatically.
In another embodiment, in the load balancing region a AP or multiple AP receives the detection of terminal transmission
Frame, obtains outside the terminal MAC address of terminal, also obtains terminal signaling intensity (obtaining second terminal information), only works as end
End signal strength is more than preset signal strength, and such as -75dBm (decibel millivolt) obtains first terminal after just adding current time stamp
Information, and reported cloud AC；Otherwise, AC is not reported.
Based on this, if terminal receives the detection frame of some AP, user therefrom selects the BSSID of some AP, to the AP
Initiate association request；After the AP of associated terminal receives the association request of terminal transmission, inquiry request to cloud AC is sent, request judges
Whether there are other AP to find the terminal MAC address.After the inquiry request that the AP that cloud AC receives terminal association sends, inquiry is local
Database, obtains the information that other AP have found terminal MAC address.If cloud AC does not find other AP and finds the terminal MAC address
Information, then respond without other AP find message to the AP of the terminal association, judge that the AP of the terminal association is edge AP.The AP
Nothing other AP discovery message that cloud AC is issued is received, ignores all of load balancing, the association for allowing to access is sent immediately
Response message to terminal, with this terminal can the normal association AP, complete after follow-up certification, normally use wireless network.
The cut-in method another embodiment for being illustrated in figure 2 edge AP in the wireless network of present invention offer is illustrated
Figure, includes in the cut-in method：During S10 receives the first terminal information that AP sends and stores it in local data base, AP
To receive the AP of end-probing frame, first terminal information includes terminal MAC address and current time stamp；S20 receiving terminals
The inquiry request that the AP of association sends, inquiry request includes the terminal MAC address of the terminal, and the pass that AP sends according to terminal
Connection request generation inquiry request；Whether S30 judges to have except the AP of associated terminal other AP detections to should according to local data base
Terminal；If S40 is judged without other AP detections to the terminal, judge that the AP of terminal association is edge AP, feedback association rings
Message should allow the terminal to access edge AP to terminal；If S50 judges there are other AP detections to the terminal, judge that terminal is closed
The AP of connection is not edge AP, and the load condition according to load balancing or AP further determines whether that allowing terminal to access is somebody's turn to do
AP。
In the present embodiment, after cloud AC receives the inquiry request of AP transmissions of terminal association, local data base is inquired about,
Obtain the information that other AP have found terminal MAC address.If cloud AC does not find the information that other AP have found the terminal MAC address,
Then judge that the AP of the terminal association is edge AP, and respond the AP that message to the terminal association is found without other AP.The AP is received
The nothing that cloud AC is issued other AP discovery message, ignores all of load balancing, and the associated response for allowing to access is sent immediately
Message to terminal, with this terminal can the normal association AP, complete after follow-up certification, normally use wireless network.
If cloud AC has found other AP and found the terminal MAC address, judge that the AP of the terminal association is non-edge AP, and
Response has other AP to find the AP of message to the terminal association.The AP receives other AP that have that cloud AC issues and finds message, application
Load balancing, the load condition that the tactful or AP itself issued by inquiring about the main AP of group is counted, determines whether terminal
Access.If conditions permit, transmission allows the association for accessing to ring message to terminal, complete with this terminal with regard to the energy normal association AP
Into after follow-up certification, wireless network is normally used；Otherwise, the association for sending refusal access rings message to terminal, afterwards, whole
Repay examination and initiate association request to other AP in end.
The schematic diagram of access system 100 of edge AP in the wireless network of present invention offer, specifically, the office are provided
Domain net includes multiple AP120 (is only shown in diagram), and multiple AP120 are connected with cloud AC with terminal communication respectively, from figure
In as can be seen that include in the access system 100：Cloud AC and AP120, wherein, cloud AC110 includes that the first information receives mould
Block 111 and judge module 112, wherein, first information receiver module 111 is used to receive and store the first terminal of AP120 transmissions
The Query Information that information and the AP120 of receiving terminal association send, the first terminal information includes terminal MAC address and works as
Preceding timestamp；Whether judge module 112 is used to judge have other AP120 to visit except the AP120 of associated terminal according to Query Information
Measure the terminal.
AP120 includes the second information receiving module 121, information extraction modules 122, information sending module 123 and closes
Connection respond module 124, wherein, the second information receiving module 121 is used for the detection frame of receiving terminal transmission and for receiving terminal
The association request of transmission；Information extraction modules 122 be used for from the second information receiving module 121 receive detection frame and associate ask
Seek middle extraction terminal MAC address；Information sending module 123 is used to include first terminal information and the generation of terminal MAC address
Inquiry request is sent to cloud controller；When judging to detect the terminal without other AP120 in cloud controller, associated response mould
Block 124 is used for should be to terminal by association sound message feedback.
As shown in figure 4, in cloud AC110 except including above-mentioned first information receiver module 111 and judge module 112 it
Outward, also include：Searching modul 113, update of time stamp module 114 and the newly-increased module 115 of record；Wherein, searching modul 113 is used
Terminal MAC address in the first terminal information received according to the second information receiving module 121 enters in the local database
Row is searched；If searching modul 113 finds the record of the terminal MAC address, update of time stamp module in the local database
The update of time stamp in recording is the current time stamp in first terminal information by 114；If searching modul 113 is in local data
The record of the terminal MAC address is not found in storehouse, then records newly-increased module 115, increase in the local database one it is new
Record, to store the first terminal information.
As shown in figure 5, except including above-mentioned first information receiver module 111, judge module 112, searching in cloud AC110
Outside module 113, update of time stamp module 114 and the newly-increased module 115 of record, also include：Real-time detection module 116 and record
Sorting module 117, wherein, real-time detection module 116 is used for real-time detection local data base；Interpretation of records module 117 is used for root
Timestamp and default time-out time in the record that detecting module 116 is detected when factually delete the note of time-out in local data base
Record.
As shown in fig. 6, except including above-mentioned second information receiving module 121, information extraction modules 122, information in AP120
Outside sending module 123 and associated response module 124, also include：Signal intensity acquisition module 125 and comparing module 126, its
In, signal intensity acquisition module 125 is used to obtain terminal signaling intensity according to detection frame；Comparing module 126 is used to believe terminal
Number intensity is compared with preset signal strength, and when terminal signaling intensity is more than preset signal strength, information sending module 123 will
The first terminal signal of generation is sent to cloud AC.
In the course of the work, the detection frame that each AP120 detecting terminals in LAN send, if detecting, passes through
The detection frame that the receiving terminal of second information receiving module 121 sends, obtains terminal MAC ground by information extraction modules 122 afterwards
Location, is added into after current time stamp and obtains first terminal information and sent to cloud AC by information sending module 123.
Cloud AC receives the first terminal information by first information receiver module 111, and searching modul 113 is whole according to first
Terminal MAC address in client information is searched in the local database, if finding terminal MAC ground in the local database
The record of location, then the update of time stamp in recording is the current time in first terminal information by update of time stamp module 114
Stamp；If not finding the record of the terminal MAC address in the local database, the newly-increased module 115 of record is in local data base
One new record of middle increase, to store the first terminal information.In addition, in whole process, real-time detection module 116 is real-time
Detection local data base, timestamp and default time-out time with this interpretation of records module 117 in record delete local number
According to the record of time-out in storehouse.In an example, the Preset Time is set as 3s, then the timestamp in record, when super
When reaching 3s, this record is removed automatically.
Based on this, if terminal receives the detection frame of some AP120, user therefrom selects the BSSID of some AP, to this
AP120 initiates association request.The AP120 of associated terminal receives the association that terminal sends by the second information receiving module 121
After request, terminal MAC address is extracted by information extraction modules 122, generation inquiry request simultaneously will by information sending module 123
Inquiry request is sent to cloud AC, and request cloud AC110 determines whether there is other AP120 and finds the terminal MAC address.First in cloud AC
After the inquiry request that the AP120 of the receiving terminal of information receiving module 111 association sends, local data is inquired about by enquiry module
Storehouse, obtains the information that other AP120 have found terminal MAC address.If cloud AC does not find the note associated with the terminal MAC address
Record, then judge module 112 judges to find the information of terminal MAC address without other AP120 that response finds message without other AP120
To the AP120 of the terminal association, while the AP120 for judging the terminal association is edge AP.The AP120 is received by the second information
Module 121 receives nothing other AP120 discovery message that cloud AC is issued, and ignores all of load balancing, immediately by letter
Breath sending module 123 sends the associate response message for allowing to access to terminal, with this terminal can the normal association AP120, it is complete
Into after follow-up certification, wireless network is normally used.
In another embodiment, if searching modul 113 finds the note associated with the terminal MAC address in cloud AC110
Record, then judge module 112 judge there are other AP120 to find the terminal MAC address, while judge the AP120 of the terminal association as
Non-edge AP, and respond the AP120 for thering are other AP120 to find message to the terminal association.The AP120 is received by the second information
Module 121 receives other AP120 that have that cloud AC issues and finds message, application load balancing strategy, by inquiring about the main AP120 of group
The load condition of strategy or AP120 itself statistics for issuing, determines whether that terminal is accessed.If conditions permit, send and permit
Perhaps the association that accesses rings message to terminal, with this terminal just can the normal association AP120, after completing follow-up certification, normally
Use wireless network；Otherwise, the association for sending refusal access rings message to terminal, and afterwards, terminal is repaid examination and sent out to other AP120
Play association request.
In another embodiment, in the wireless local web area a AP120 or multiple AP120 receives terminal transmission
Detection frame, except by information extraction modules 122 obtain terminal terminal MAC address in addition to, also by signal intensity obtain
Module 125 obtains terminal signaling intensity, and is compared terminal signaling intensity and preset signal strength by comparing module 126
Compared with only when terminal signaling intensity is more than preset signal strength, such as -75dBm (decibel millivolt) is obtained after just adding current time stamp
To first terminal information, and reported cloud AC；Otherwise, AC is not reported.
Description based on more than to the cut-in method and its system of edge AP in wireless network, one is entered below by way of an example
Step explanation：
First, according to user's request, load balancing region delimited, and n AP be coated with the load balancing region, respectively
For AP_1, AP_2 ..., AP_n；Cloud AC is responsible for and safeguards n AP in the load balancing region, and cloud AC inside is in real time
Detecting module, the detection frame of neighbouring all terminals in real-time collecting wireless zone.
User holds terminal and moves to wireless load balancing region, according to the agreements of IEEE 802.11, sends detection frame.Now,
K AP in load balancing region receives the detection frame of this terminal, and each terminal obtains terminal MAC address and terminal signaling respectively
Intensity (RSSI, Received Signal Strength Indication)；Terminal signaling intensity is more than -75dBm, then add
First terminal information is obtained after current time stamp T, cloud AC is reported, specific form is：<AP_1, T_1, terminal MAC address>,<
AP_2, T_2, terminal MAC address>...,<AP_k, T_k, terminal MAC address>, wherein k >=1；If conversely, terminal signaling is strong
Degree -75dBm, then ignore this record, and cloud AC is not reported.
Cloud AC receives the first terminal information that k AP sends, and inquiring about local data base according to terminal MAC address therein is
It is no to have identical recordings, if not finding relative recording, add a line new record<AP_i, T_i, terminal MAC address>, its
In 1≤i≤k.If there is the record of the terminal MAC address, timestamp is updated.With this notice, cloud AC real-time detection numbers
According to storehouse, for every record<AP_i, T_i, terminal MAC address>(1≤i≤k), according to time stamp T _ i in record, sets 3s
Time-out, i.e., when T_i+3 seconds, time is up, remove automatically this record.
On the other hand, according to the agreements of IEEE 802.11, terminal receives the detection frame of one or more AP, and user therefrom selects
The BSSID of some AP is selected, association request is initiated, remembers that this AP is AP_TG.After AP_TG receives the association request of terminal, send out immediately
Inquiry request is sent to judge whether terminal MAC address there are other AP to find to cloud AC, request cloud AC.
Cloud AC is received after the inquiry request of AP_TG, inquires about real-time detection module, is obtained other AP and is found terminal MAC ground
The information of location；Specifically, it is key search local data base with terminal MAC address, if in addition to AP_i==AP_TG, not having
Other AP have found the terminal, then show not find any AP, show that the AP_TG is edge AP；If there is other AP, show
There are other AP to find, show that the AP_TG is not edge AP.
If cloud AC does not find any AP and finds terminal MAC address, respond and find terminal message to AP_TG without AP.AP_
TG receive cloud AC transmission without AP find terminal message, ignore all of load balancing, according to the maximum access quantity of itself
Etc. resource situation, determine whether to allow terminal to access.If self-condition is allowed, send allows the associated response for accessing to disappear immediately
Cease to terminal, now terminal normal association AP, after completing other certifications, accesses wireless network；Otherwise send the pass that refusal is accessed
Connection response message is to terminal, it is impossible to provide any wireless network services.
If cloud AC has found AP and found terminal MAC address, response has AP to find terminal message so far AP_TG.AP_TG is received
Terminal message, application load balancing strategy, by inquiring about strategy or itself system that the main AP of group is issued are found to the AP that cloud AC sends
The load condition of meter, determines whether to allow terminal to access.If strategy is allowed, transmission allows the associate response message for accessing to end
End, now terminal normal association AP, after completing other certifications, accesses wireless network；Otherwise, the associated response that refusal is accessed is sent
Message is repaid examination and initiates association request to other AP to terminal, now terminal.
It should be noted that above-described embodiment can independent assortment as needed.The above is only of the invention preferred
Implementation method, it is noted that for those skilled in the art, is not departing from the premise of the principle of the invention
Under, some improvements and modifications can also be made, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (10)
1. in a kind of wireless network edge AP cut-in method, it is characterised in that be applied to cloud controller, LAN includes many
Individual AP, the multiple AP are connected with cloud controller and terminal communication respectively, and the cut-in method includes：
During S10 receives the first terminal information that AP sends and stores it in local data base, the AP is to receive terminal spy
The AP of frame is surveyed, the first terminal information includes terminal MAC address and current time stamp；
The inquiry request that the AP of S20 receiving terminals association sends, the inquiry request includes the terminal MAC address of the terminal,
And the association request that the AP sends according to terminal generates inquiry request；
Whether S30 judges there are other AP detections to the terminal except the AP of associated terminal according to local data base；
If S40 is judged without other AP detections to the terminal, judge that the AP of terminal association is edge AP, feedback association sound disappears
Breath should allow the terminal to access edge AP to terminal.
2. cut-in method as claimed in claim 1, it is characterised in that in step S1, receives the first terminal information that AP sends
And in being stored, specifically include：
The detection frame of S11 AP receiving terminals simultaneously generates first terminal information, and the first terminal information includes terminal MAC ground
Location and current time stamp；
Terminal MAC address of the S12 in first terminal information is searched in the local database；
If S13 finds the record of the terminal MAC address in the local database, the update of time stamp during this is recorded is the
Current time stamp in one end message；
If S14 does not find the record of the terminal MAC address in the local database, one is increased in the local database newly
Record, to store the first terminal information.
3. cut-in method as claimed in claim 2, it is characterised in that also include before step S11：AP obtains second terminal letter
Breath, the second terminal information includes terminal MAC address and terminal signaling intensity, when terminal signaling intensity is more than preset signals
Intensity, then generation includes that terminal MAC address and the first terminal information of current time stamp are sent to cloud controller.
4. cut-in method as claimed in claim 2 or claim 3, it is characterised in that in step S1, receives the first terminal letter that AP sends
In ceasing and being stored, also include：
S15 real-time detection local data bases, timestamp and default time-out time in record surpass in deleting local data base
When record.
5. the cut-in method as described in claim 1-3 any one, it is characterised in that also include after step S30：
If S50 judges there are other AP detections to the terminal, the AP for judging terminal association is not edge AP, according to load balancing
The load condition of strategy or AP further determines whether to allow terminal to access the AP.
6. the cut-in method as described in claim 1-3 any one, it is characterised in that before step S10, also include：
S01 delimited includes the load balancing region of multiple AP, and the load balancing region is managed by cloud controller.
7. in a kind of wireless network edge AP access system, it is characterised in that LAN includes multiple AP, the multiple AP
It is connected with cloud controller and terminal communication respectively, the access system includes：
Cloud controller includes：For receiving and store AP transmission first terminal information and receiving terminal association AP send
The first information receiver module of Query Information, the first terminal information includes terminal MAC address and current time stamp；And use
In judging whether there be judge module of other AP detections to the terminal except the AP of associated terminal according to Query Information；
AP includes that the detection frame sent for receiving terminal and the second information of the association request sent for receiving terminal connect
Receive module；For the information for detecting extraction terminal MAC address in frame and association request received from the second information receiving module
Extraction module；For will include that the first terminal information of terminal MAC address and generation inquiry request are sent to the letter of cloud controller
Breath sending module；And when no other AP detections are judged in cloud controller to the terminal, for association to be rung into message feedback
Should be to the associated response module of terminal.
8. access system as claimed in claim 7, it is characterised in that also include in the cloud controller：
Searching modul, for the terminal MAC address in the first terminal information that is received according to the second information receiving module at this
Searched in ground database；
Update of time stamp module, if searching modul finds the record of the terminal MAC address in the local database, this is remembered
Update of time stamp in record is the current time stamp in first terminal information；
The newly-increased module of record, if searching modul does not find the record of the terminal MAC address in the local database, local
Increase a new record in database, to store the first terminal information.
9. access system as claimed in claim 8, it is characterised in that also include in the cloud controller：
Real-time detection module, for real-time detection local data base；
Interpretation of records module, deletes for the timestamp and default time-out time in the record that is detected according to real-time detection module
The record of time-out in local data base.
10. the access system as described in claim 7-9 any one, it is characterised in that also include in AP：
Signal intensity acquisition module, for obtaining terminal signaling intensity according to detection frame；
Comparing module, for terminal signaling intensity and preset signal strength to be compared, when terminal signaling intensity is more than default
Signal intensity, information sending module sends to cloud controller the first terminal signal of generation.
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