CN102271421A - Method and device for establishing Mesh link - Google Patents
Method and device for establishing Mesh link Download PDFInfo
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- CN102271421A CN102271421A CN2011102019282A CN201110201928A CN102271421A CN 102271421 A CN102271421 A CN 102271421A CN 2011102019282 A CN2011102019282 A CN 2011102019282A CN 201110201928 A CN201110201928 A CN 201110201928A CN 102271421 A CN102271421 A CN 102271421A
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Abstract
The invention discloses a method and device for establishing a Mesh link. The method provided by the invention comprises the following steps that: when an empty configuration AP (Access Point) device needs to be online, the empty configuration AP device acquires a message which is sent by each online AP device; if the message from the online AP device carries information of the empty configuration AP device, the empty configuration AP device certainly has priority to pass a Mesh link established by the online AP device; and the Mesh link is established by the empty configuration AP device and the online AP device, and the empty configuration AP device and the online AP device are connected with an AC (Access Controller) device through the Mesh link. The method and device disclosed by the invention have the advantages of avoiding the time overhead caused by a wrong Mesh connection and improving the average efficiency of a system.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of method for building up and equipment of Mesh link.
Background technology
WLAN (Wireless Local Area Networks, WLAN (wireless local area network)) provides a kind of wireless connections service of local area network (LAN), wireless data access at a high speed can be provided, compare with traditional line access mode that has, WLAN (wireless local area network) makes the use of network free more, has broken away from the constraint of cable and port position, and has removed or reduced numerous and diverse network layout from, only need lay one or more AP (Access Point, access point) can set up LAN.
WLAN Mesh (wireless mesh) network is a kind of new WLAN (wireless local area network) type, and different with WLAN is that the AP in the Mesh network (being WLAN Mesh network) is wireless connections, and can set up the Radio Link of multi-hop between the AP.Along with the scale of Mesh network increases day by day, the serious management bottleneck of Mesh network faces that Fat (fat) AP forms, the Mesh network of Fit (thin) AP framework becomes more excellent scheme, as shown in Figure 1, is the schematic diagram based on the Mesh network of FitAP framework.
AC (Access Controller, wireless controller) is used for the AP of WLAN (wireless local area network) is controlled and manages; MPP (Mesh Portal Point, wireless mesh Ingress node) is by wired WAP (wireless access point) that is connected with AC; MP (MeshAP) is the AP that reaches the standard grade by the Wireless Mesh link, promptly is connected with MPP by wireless; MAP (Mesh Access Point) is for providing the WAP (wireless access point) of Mesh service and access service simultaneously.
Based on the network architecture shown in Figure 1, the AP mechanism of reaching the standard grade that existing empty configuration starts comprised with the next stage: a, scanning channel also obtain neighbor information; B, set up interim Mesh link; C, initiation LWAPP (Light Weight Access Point Protocol, Lightweight Access Point Protocol) or CAPWAP (Controlling and Provisioning of Wireless Access Point, wireless access point control and supply) are connected; D, the interim Mesh link of disconnection, and import the configuration of downloading, initiate the safe Mesh link of encrypting again; Afterwards, the AP of empty configuration startup can reach the standard grade by safety Mesh link.
As shown in Figure 2, be example in the LWAPP mode, the Mesh link establishment process of the AP that then empty configuration starts may further comprise the steps:
For example, AP1 finds that AP2 and AP3 provide Mesh service, and the signal strength signal intensity of AP2 is when being higher than AP3, and then AP1 sets up neighbor entry, and AP2 is positioned at before the AP3 in the neighbor entry.
It should be noted that then AC1 can send the LWAPP response to AP1 if by AC1 management AP1, otherwise AC1 can not send LWAPP to AP1 and respond.
Step 209, AP1 disconnects interim Mesh link, and imports the configuration of downloading, and initiates the safe Mesh link of encrypting again; Afterwards, AP1 can reach the standard grade at AC1 by safety Mesh link.
When existing AP1 reaches the standard grade, can set up neighbor entry according to signal strength signal intensity, AP1 as shown in Figure 3 (as MP) starts the schematic diagram that the back connects the Mesh service, because when the signal strength signal intensity of front space has certain randomness, if in front space, there be N different Mesh service (being that N the AP that reaches the standard grade provides the Mesh service), then the probability of one of them Mesh service is identical in the AP1 connection, is 1/N.
When the object of setting up interim Mesh link as AP1 is not the Mesh service of expection, AP1 still can execution in step 204 to step 207, this process can consumes least K second (K is interim Mesh link overtime timer numerical value).If AP1 the X time (0＜X＜=N) set up correct interim Mesh link, then the latent period of AP1 is X-1, the stand-by period is link time-out time K * latent period (X-1).
Hence one can see that, under the environment of N different Mesh service, the average latency that AP1 sets up correct interim Mesh link is: ∑ (link time-out time * latent period * probability), that is: K * 0 * 1/N+K * 1 * 1/N+K * 2 * 1/N+ ... K * (N-1) * 1/N; Above-mentioned formula can be reduced to: K * (N-1)/2.
In above-mentioned formula, K is a definite value, and the K value is not less than the time (being the scheduled time in the step 207, generally greater than 1 minute) of LWAPP request timed out, and therefore when the N value was big more, the average delay time of setting up the Mesh link was big more.
Summary of the invention
The invention provides a kind of method for building up and equipment of Mesh link, to set up the Mesh link fast.
In order to achieve the above object, the invention provides a kind of method for building up of Mesh link, be applied to comprise wireless controller AC equipment, in the WLAN (wireless local area network) WLAN Mesh network of reach the standard grade access point AP equipment and empty configuration AP equipment, this method may further comprise the steps:
Described AC equipment sends to the described AP of reaching the standard grade equipment with the information of the sky configuration AP equipment of self-management, is sent the message of the information of carrying described empty configuration AP equipment by the described AP of reaching the standard grade equipment;
When described empty configuration AP equipment need be reached the standard grade, described empty configuration AP equipment obtained the message that the AP equipment of respectively reaching the standard grade sends;
Carry the information of described empty configuration AP equipment in the message of AP equipment if reach the standard grade, then described empty configuration AP equipment is determined preferentially to set up the Mesh link by the described AP of reaching the standard grade equipment;
Described empty configuration AP equipment and the described AP of reaching the standard grade equipment are set up the Mesh link, and are connected to described AC equipment by described Mesh link.
The described AP of reaching the standard grade equipment sends the message of the information of carrying described empty configuration AP equipment, specifically comprises:
The described AP of reaching the standard grade equipment sends to described empty configuration AP equipment with broadcast mode with the described empty information that disposes AP equipment by the Beacon frame; Perhaps,
The described AP of reaching the standard grade equipment sends to described empty configuration AP equipment with mode of unicast with the described empty information that disposes AP equipment by Probe Response frame.
Described empty configuration AP equipment is determined preferentially to set up the Mesh link by the described AP of reaching the standard grade equipment, specifically comprises:
Described sky disposes the preferential neighbor table of AP plant maintenance, and the information of the described AP of reaching the standard grade equipment is recorded in the described preferential neighbor table;
When described empty configuration AP equipment need be set up the Mesh link, described empty configuration AP equipment was determined preferentially to set up the Mesh link by the AP equipment of reaching the standard grade that writes down in the described preferential neighbor table.
The information of described empty configuration AP equipment comprises: the type information of described empty configuration AP equipment; Perhaps, the type information and the sequence number information of described empty configuration AP equipment.
Described method also comprises: when a plurality of AP of reaching the standard grade equipment sent the message of the information of carrying the described empty AP of configuration equipment, described sky configuration AP equipment determined that preferentially described sky disposes the type information of AP equipment and the AP equipment of reaching the standard grade of sequence number information is set up the Mesh link by carrying in the message.
Described method also comprises: when the AP equipment of reaching the standard grade sends the message of the type information that carries described empty configuration AP equipment, if there are not other AP equipment of reaching the standard grade to send the message of the information of carrying described empty configuration AP equipment in the described WLAN Mesh network, then described empty configuration AP equipment is determined preferentially to set up the Mesh link by the described AP of reaching the standard grade equipment.
A kind of AP equipment, be applied to comprise AC equipment, the AP equipment of reaching the standard grade disposes in the WLAN Mesh network of AP equipment with sky, and described AP equipment is described AP equipment or the described empty configuration AP equipment of reaching the standard grade, and described AP equipment comprises: receiver module, sending module, processing module;
When described AP equipment is described reaching the standard grade during AP equipment,
Described receiver module is used to receive the information from the sky configuration AP equipment of its management of described AC equipment;
Described sending module is used to send the message of the information of carrying described empty configuration AP equipment;
When described AP equipment is described empty configuration AP equipment,
Described receiver module is used for when self need reach the standard grade, and obtains the message that the AP equipment of respectively reaching the standard grade sends;
Described processing module is used for then determining preferentially to set up the Mesh link by the described AP of reaching the standard grade equipment when the message of the AP equipment of reaching the standard grade carries the information of described empty configuration AP equipment; And set up the Mesh link with the described AP of reaching the standard grade equipment, be connected to described AC equipment by described Mesh link.
When described AP equipment is described reaching the standard grade during AP equipment, described sending module specifically is used for broadcast mode the information of described empty configuration AP equipment being sent to described empty configuration AP equipment by the Beacon frame; Perhaps,
With mode of unicast the described empty information that disposes AP equipment is sent to described empty configuration AP equipment by Probe Response frame.
When described AP equipment was described empty configuration AP equipment, described processing module specifically was used to safeguard preferential neighbor table, and the information of the described AP of reaching the standard grade equipment is recorded in the described preferential neighbor table;
When needs are set up the Mesh link, determine preferentially to set up the Mesh link by the AP equipment of reaching the standard grade that writes down in the described preferential neighbor table.
The information of described empty configuration AP equipment comprises: the type information of described empty configuration AP equipment; Perhaps, the type information and the sequence number information of described empty configuration AP equipment.
When described AP equipment is described empty configuration AP equipment, described processing module, also be used for when a plurality of AP of reaching the standard grade equipment send the message of the information of carrying described empty configuration AP equipment, determine that preferentially the type information by carrying described empty configuration AP equipment in the message and the AP equipment of reaching the standard grade of sequence number information sets up the Mesh link.
When described AP equipment is described empty configuration AP equipment, described processing module, also be used for when the AP equipment of reaching the standard grade sends the message of the type information that carries described empty configuration AP equipment, if do not have other AP equipment of reaching the standard grade to send the message of the information of carrying described empty configuration AP equipment in the described WLANMesh network, then determine preferentially to set up the Mesh link by the described AP of reaching the standard grade equipment.
Compared with prior art, the present invention has the following advantages at least:
The time overhead that can avoid wrong Mesh to connect and cause, and set up the Mesh link fast, improve system's average efficiency.
Description of drawings
Fig. 1 is based on the schematic diagram of the Mesh network of Fit AP framework in the prior art;
Fig. 2 is the Mesh link establishment process flow diagram of the AP of prior art hollow configuration startup;
Fig. 3 is that AP1 starts the schematic diagram that the back connects the Mesh service in the prior art;
Fig. 4 is the method for building up flow chart of a kind of Mesh link provided by the invention;
Fig. 5 is a Mesh field structure schematic diagram among the present invention;
Fig. 6 is the structural representation of AP information unit among the present invention;
Fig. 7 is the structure chart of a kind of AP equipment of proposing of the present invention.
Embodiment
The present invention proposes a kind of method for building up of Mesh link, and this method is applied to comprise AC equipment, in the WLAN Mesh network of reach the standard grade AP equipment and empty configuration AP equipment (being current AP equipment of not reaching the standard grade).For convenience of description, this AC equipment is that example describes with AC1; This AP equipment AP equipment for having reached the standard grade at AC1 of reaching the standard grade can be MPP, MP or MAP etc., because the AP equipment of reaching the standard grade has been reached the standard grade, then AC1 can control and manage the AP equipment of reaching the standard grade by agreements such as LWAPP or CAPWAP; The AP equipment of this sky configuration AP equipment for reaching the standard grade at AC1 can be MP or MAP, is configured to sky on it, and because empty configuration AP equipment need be reached the standard grade at AC1, then AC1 will record the information that self can manage this sky configuration AP equipment.
As shown in Figure 4, the method for building up of this Mesh link may further comprise the steps:
Step 401, AC equipment sends to the AP equipment of reaching the standard grade with the information of the sky configuration AP equipment of self-management.The information of this sky configuration AP equipment comprises: the type information of empty configuration AP equipment; Perhaps, the type information and the sequence number information of empty configuration AP equipment.
Because AC1 need manage this sky configuration AP equipment, so this AC1 can be known the relevant information (as type information, sequence number information etc.) of this sky configuration AP equipment; And because AC1 can control and manage the AP equipment of reaching the standard grade by agreements such as LWAPP or CAPWAP, so the information that AC1 can dispose sky AP equipment (is example with AP1) sends to the AP equipment of reaching the standard grade (is example with AP2 and AP3).For example, AC1 sends to AP2 with the type information of AP1, and type information and the sequence number information of AP1 sent to AP3.
Among the present invention, can increase a Mesh field, AC equipment can dispose sky the type information and the sequence number information of AP equipment to be added in this Mesh field.This Mesh field can be added among the self-defining IE of manufacturer (information element), and according to actual needs, defining this Mesh field is 2+6 * n byte, Mesh field structure schematic diagram as shown in Figure 5.
This Mesh field comprises AP information counter field and AP message part field, AP information counter field identification the quantity of subsidiary AP information, if the value of current counter is n, then the length of AP message part is 6 * n; AP message part field is made up of n AP information unit, the structural representation of AP information unit as shown in Figure 6.
Each AP information unit is divided into two fields: AP model (type information of promptly empty configuration AP equipment) and AP sequence number abstract fields (promptly empty dispose AP equipment and sequence number information).AP model field length is two bytes, and maximum upper limit is represented 65536 kinds of different AP models, and concrete method for expressing is formulated voluntarily by manufacturer.AP sequence number abstract fields length is 4 bytes, be by the sequence number of AP (be Serial-id, sequence number that can an AP equipment of unique appointment, when dispatching from the factory by factory settings) obtain; In the practical application, can pass through the algorithm that CRC (Cyclical Redundancy Check, cyclic redundancy code) etc. calculates summary, when guaranteeing the sequence number uniqueness, the sequence number of AP be simplified processing, obtain the sequence number information of AP.
Need to prove that the byte number of above-mentioned each field can also be adjusted according to actual needs; When AC equipment only sent type information, it was complete 0 that AP sequence number abstract fields then can be set.
Step 402, when sky configuration AP equipment need be reached the standard grade, empty configuration AP equipment obtained the message that the AP equipment of respectively reaching the standard grade sends.
Obtain the information of empty configuration AP equipment from AC equipment when the AP equipment of reaching the standard grade after, the AP equipment of reaching the standard grade can send the message of the information of carrying empty configuration AP equipment, for example, AP2 sends the message of the type information that carries AP1, and AP3 sends and carries the type information of AP1 and the message of sequence number information.
The AP (being AP1) that starts when sky configuration is in the time of need reaching the standard grade, and AP1 will scan all channels, and discovery respectively reach the standard grade the message that AP equipment sent (as carry the type information of AP1 message, carry the type information of AP1 and the message of sequence number information).
In actual applications, the AP equipment of reaching the standard grade can send to empty configuration AP equipment by the information that Beacon (beacon) frame disposes AP equipment with broadcast mode with sky; Perhaps, the AP equipment of reaching the standard grade can send to empty configuration AP equipment by the information that Probe Response (probe response) frame disposes AP equipment with mode of unicast with sky.For example, the Beacon frame of the type information of AP1 is carried in AP2 broadcasting, and AP1 can listen to the Beacon frame, and therefrom obtains the type information that it has carried AP1; The AP3 clean culture sends to AP1 and carries the type information of AP1 and the Probe Response frame of sequence number information.
Step 403, if carry the information of empty configuration AP equipment in the message of the AP equipment of reaching the standard grade, then empty configuration AP equipment is determined preferentially to set up the Mesh link by the AP equipment of reaching the standard grade.
Concrete, empty configuration AP equipment can be safeguarded preferential neighbor table, and the information (as address information, BSSID information etc.) of carrying the pairing AP of the reaching the standard grade equipment of information of empty configuration AP equipment in the message is recorded in the preferential neighbor table; Afterwards, when sky configuration AP equipment need be set up the Mesh link, empty configuration AP equipment was determined preferentially to set up the Mesh link by the AP equipment of reaching the standard grade that writes down in the preferential neighbor table.
Among the present invention, empty configuration AP equipment need be judged the information that scans according to type information and sequence number information, and neighbours' (AP equipment of promptly reaching the standard grade) of type information and self coupling are inserted in the preferential neighbor table, if sequence number information is also mated with self, then the list item of correspondence is set to first sign (as 1), otherwise the list item of correspondence is set to second sign (as 0).As shown in table 1, be a kind of example structure of preferential neighbor table.
Table 1
| The neighbours address | Neighbours BSSID | Sequence numbers match |
| X-x-x (AP3 address) | X-x-x (BSSID of AP3) | 1 |
| Y-y-y (AP2 address) | Y-y-y (BSSID of AP2) | 0 |
Need to prove that the priority of the list item that type information and sequence number information are all mated is higher than the list item of type information coupling, promptly the sequence numbers match priority that is designated 1 list item is higher than sequence numbers match and is designated 0 list item.Identify when identical in sequence numbers match, then carry out priority and arrange according to signal strength signal intensity.
Hence one can see that, when a plurality of AP of reaching the standard grade equipment had all sent the message of the information of carrying the empty AP of configuration equipment, then sky configuration AP equipment determined that preferentially sky disposes the type information of AP equipment and the AP equipment of reaching the standard grade of sequence number information is set up the Mesh link by carrying in the message.For example, based on table 1, then AP1 determines preferential and AP3 sets up the Mesh link.
In addition,, then can adopt existing neighbor entry storage relevant information, and carry out priority according to signal strength signal intensity and arrange, not repeat them here at the AP equipment of reaching the standard grade of the information of not carrying empty configuration AP equipment.
Need to prove, in actual applications, also can not safeguard preferential neighbor table, but existing neighbor entry is adjusted, as long as can write down information in the above-mentioned preferential neighbor table.For example, in existing neighbor entry, increase priority symbol,, can priority symbol be set to 0 or 1, and, can not write correlated identities for the AP that need in preferential neighbor table, not write down for the above-mentioned AP that need in preferential neighbor table, write down.
Step 404, the AP equipment of reaching the standard grade that writes down in empty configuration AP equipment and the preferential neighbor table is set up the Mesh link, and is connected to AC equipment by the Mesh link.
Among the present invention, when sky configuration AP equipment need be reached the standard grade, the AP equipment of reaching the standard grade that writes down in the preferential and preferential neighbor table of then empty configuration AP equipment was set up the Mesh link.For example, based on the preferential neighbor table shown in the table 1, because AP3 is positioned at before the AP2, then AP1 will set up the Mesh link with AP3, and be connected to AC1 by this Mesh link.
Specifically, interim Mesh link set up in first record (AP3) in AP1 and the preferential neighbor table, and when interim Mesh link establishment was successful, AC (being AC1) the initiation LWAPP that manages AP3 by interim Mesh chain road direction asked or the CAPWAP request; Because AC1 is the AC equipment of management AP1, so AP1 can receive LWAPP response or the CAPWAP response of AC1 in the given time; Afterwards, AP1 determines that LWAPP connects or CAPWAP connects foundation, and after successfully downloading start-up routine or configuration file, AP1 disconnects interim Mesh link, and imports the configuration of downloading, and initiates the safe Mesh link of encrypting again; Afterwards, AP1 can reach the standard grade at AC1 by safety Mesh link.
Need to prove that if do not have corresponding record in the preferential neighbor table, then set up the Mesh link according to the record in the neighbor entry, this process is same as the prior art, repeats no more among the present invention.
In sum, under the situation that in front space, exists a plurality of different Mesh to serve, because the link that the empty configuration of influence AP equipment is reached the standard grade is mainly and sets up LWAPP or CAPWAP and connect and do not have response, therefore, be provided with under the situation of preferential neighbor table based on type information and sequence number information, owing to mated type information and sequence number information, make and to analyze correct Mesh service at sweep phase, follow-up LWAPP connects or CAPWAP connects and will successfully set up, therefore AP1 can accurately set up the Mesh link according to preferential neighbor table, avoids setting up wrong Mesh link and the time overhead that causes.For example, became fixing constant S the average time of Mesh link establishment in the system from K * (N-1)/2 second.And S is the sweep time of empty configuration AP equipment, is generally time-out time K (being generally 80 seconds) in the current techniques 2 to 4 seconds.
Among the present invention, when the AP equipment (as AP2) of reaching the standard grade sends the message of the type information that carries empty configuration AP equipment, if there are not other AP equipment of reaching the standard grade to send the message of the information of carrying empty configuration AP equipment in the WLAN Mesh network, then empty configuration AP equipment is determined preferentially to set up the Mesh link by this AP equipment of reaching the standard grade.For example, when having only AP2 to send the message of the type information that carries AP1, then AP1 preferentially sets up the Mesh link by AP2.
When specifying AP1, AC1 need set up Mesh link (promptly starting auto AP function) by AP2, and when reaching the standard grade by AP2, can be notified to AP2 by a type information with AP1, this moment, AP1 only can obtain the type information of AP1 from the message of AP2, then make AP1 set up the Mesh link, and reach the standard grade by AP2 by AP2.
In the prior art, can set up the Mesh link by MAC (Media Access Control, the medium access control) address of configuration appointment neighbours on AC equipment, when having bigger Mesh network, the configuration effort of setting up, change and delete the Mesh link can become very loaded down with trivial details.And can't be used in combination with auto AP function, limited the application of auto AP on the Mesh network.
At the problems referred to above, by adopting technical scheme provided by the invention, under the situation that two kinds of Mesh services exist, empty configuration AP equipment will be at first connects with the Wireless Mesh service of sequence number with self coupling, has avoided only mating the influence that type information (startup auto AP function) causes scheme; When improving Mesh link establishment efficient, kept the simplification of configuration and management; And compare with the Peer MAC mechanism of using MAC Address to judge, avoided the MAC of auto AP unknowable, problems such as MAC calculations of offset.
Based on the inventive concept same with said method, the invention allows for a kind of AP equipment, be applied to comprise AC equipment, the AP equipment of reaching the standard grade disposes in the WLAN Mesh network of AP equipment with sky, described AP equipment is described AP equipment or the described empty configuration AP equipment of reaching the standard grade, as shown in Figure 7, described AP equipment comprises: receiver module 11, sending module 12, processing module 13;
When described AP equipment is described reaching the standard grade during AP equipment, described receiver module 11 is used to receive the information from the sky configuration AP equipment of its management of described AC equipment; Described sending module 12 is used to send the message of the information of carrying described empty configuration AP equipment;
When described AP equipment was described empty configuration AP equipment, described receiver module 11 was used for when self need reach the standard grade, obtains the message of the AP equipment transmission of respectively reaching the standard grade; Described processing module 13 is used for then determining preferentially to set up the Mesh link by the described AP of reaching the standard grade equipment when the message of the AP equipment of reaching the standard grade carries the information of described empty configuration AP equipment; And set up the Mesh link with the described AP of reaching the standard grade equipment, be connected to described AC equipment by described Mesh link.
When described AP equipment is described reaching the standard grade during AP equipment, described sending module 12 specifically is used for broadcast mode the information of described empty configuration AP equipment being sent to described empty configuration AP equipment by the Beacon frame; Perhaps, with mode of unicast the described empty information that disposes AP equipment is sent to described empty configuration AP equipment by Probe Response frame.
When described AP equipment was described empty configuration AP equipment, described processing module 13 specifically was used to safeguard preferential neighbor table, and the information of the described AP of reaching the standard grade equipment is recorded in the described preferential neighbor table; When needs are set up the Mesh link, determine preferentially to set up the Mesh link by the AP equipment of reaching the standard grade that writes down in the described preferential neighbor table.
The information of described empty configuration AP equipment comprises: the type information of described empty configuration AP equipment; Perhaps, the type information and the sequence number information of described empty configuration AP equipment.
When described AP equipment is described empty configuration AP equipment, described processing module 13, also be used for when a plurality of AP of reaching the standard grade equipment send the message of the information of carrying described empty configuration AP equipment, determine that preferentially the type information by carrying described empty configuration AP equipment in the message and the AP equipment of reaching the standard grade of sequence number information sets up the Mesh link.
When described AP equipment is described empty configuration AP equipment, described processing module 13, also be used for when the AP equipment of reaching the standard grade sends the message of the type information that carries described empty configuration AP equipment, if do not have other AP equipment of reaching the standard grade to send the message of the information of carrying described empty configuration AP equipment in the described WLAN Mesh network, then determine preferentially to set up the Mesh link by the described AP of reaching the standard grade equipment.
Wherein, each module of apparatus of the present invention can be integrated in one, and also can separate deployment.Above-mentioned module can be merged into a module, also can further split into a plurality of submodules.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by hardware, also can realize by the mode that software adds necessary general hardware platform.Based on such understanding, technical scheme of the present invention can embody with the form of software product, it (can be CD-ROM that this software product can be stored in a non-volatile memory medium, USB flash disk, portable hard drive etc.) in, comprise some instructions with so that computer equipment (can be personal computer, server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.
It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, module in the accompanying drawing or flow process might not be that enforcement the present invention is necessary.
It will be appreciated by those skilled in the art that the module in the device among the embodiment can be distributed in the device of embodiment according to the embodiment description, also can carry out respective change and be arranged in the one or more devices that are different from present embodiment.The module of the foregoing description can be merged into a module, also can further split into a plurality of submodules.
The invention described above sequence number is not represented the quality of embodiment just to description.
More than disclosed only be several specific embodiment of the present invention, still, the present invention is not limited thereto, any those skilled in the art can think variation all should fall into protection scope of the present invention.
Claims (12)
1. the method for building up of a Mesh link is applied to comprise wireless controller AC equipment, in the WLAN (wireless local area network) WLAN Mesh network of reach the standard grade access point AP equipment and empty configuration AP equipment, it is characterized in that this method may further comprise the steps:
Described AC equipment sends to the described AP of reaching the standard grade equipment with the information of the sky configuration AP equipment of self-management, is sent the message of the information of carrying described empty configuration AP equipment by the described AP of reaching the standard grade equipment;
When described empty configuration AP equipment need be reached the standard grade, described empty configuration AP equipment obtained the message that the AP equipment of respectively reaching the standard grade sends;
Carry the information of described empty configuration AP equipment in the message of AP equipment if reach the standard grade, then described empty configuration AP equipment is determined preferentially to set up the Mesh link by the described AP of reaching the standard grade equipment;
Described empty configuration AP equipment and the described AP of reaching the standard grade equipment are set up the Mesh link, and are connected to described AC equipment by described Mesh link.
2. the method for claim 1 is characterized in that, the described AP of reaching the standard grade equipment sends the message of the information of carrying described empty configuration AP equipment, specifically comprises:
The described AP of reaching the standard grade equipment sends to described empty configuration AP equipment with broadcast mode with the described empty information that disposes AP equipment by the Beacon frame; Perhaps,
The described AP of reaching the standard grade equipment sends to described empty configuration AP equipment with mode of unicast with the described empty information that disposes AP equipment by Probe Response frame.
3. the method for claim 1 is characterized in that, described empty configuration AP equipment is determined preferentially to set up the Mesh link by the described AP of reaching the standard grade equipment, specifically comprises:
Described sky disposes the preferential neighbor table of AP plant maintenance, and the information of the described AP of reaching the standard grade equipment is recorded in the described preferential neighbor table;
When described empty configuration AP equipment need be set up the Mesh link, described empty configuration AP equipment was determined preferentially to set up the Mesh link by the AP equipment of reaching the standard grade that writes down in the described preferential neighbor table.
4. as each described method of claim 1-3, it is characterized in that the information of described empty configuration AP equipment comprises: the type information of described empty configuration AP equipment; Perhaps, the type information and the sequence number information of described empty configuration AP equipment.
5. method as claimed in claim 4 is characterized in that, described method also comprises:
When a plurality of AP of reaching the standard grade equipment sent the message of the information of carrying the described empty AP of configuration equipment, described sky configuration AP equipment determined that preferentially described sky disposes the type information of AP equipment and the AP equipment of reaching the standard grade of sequence number information is set up the Mesh link by carrying in the message.
6. method as claimed in claim 4 is characterized in that, described method also comprises:
When the AP equipment of reaching the standard grade sends the message of the type information that carries described empty configuration AP equipment, if there are not other AP equipment of reaching the standard grade to send the message of the information of carrying described empty configuration AP equipment in the described WLAN Mesh network, then described empty configuration AP equipment is determined preferentially to set up the Mesh link by the described AP of reaching the standard grade equipment.
7. AP equipment, be applied to comprise AC equipment, in the WLAN Mesh network of reach the standard grade AP equipment and empty configuration AP equipment, described AP equipment is described AP equipment or the described empty configuration AP equipment of reaching the standard grade, it is characterized in that described AP equipment comprises: receiver module, sending module, processing module;
When described AP equipment is described reaching the standard grade during AP equipment,
Described receiver module is used to receive the information from the sky configuration AP equipment of its management of described AC equipment;
Described sending module is used to send the message of the information of carrying described empty configuration AP equipment;
When described AP equipment is described empty configuration AP equipment,
Described receiver module is used for when self need reach the standard grade, and obtains the message that the AP equipment of respectively reaching the standard grade sends;
Described processing module is used for then determining preferentially to set up the Mesh link by the described AP of reaching the standard grade equipment when the message of the AP equipment of reaching the standard grade carries the information of described empty configuration AP equipment; And set up the Mesh link with the described AP of reaching the standard grade equipment, be connected to described AC equipment by described Mesh link.
8. AP equipment as claimed in claim 7 is characterized in that, when described AP equipment is described reaching the standard grade during AP equipment,
Described sending module specifically is used for sending to described empty configuration AP equipment by the information that the Beacon frame disposes AP equipment with broadcast mode with described sky; Perhaps,
With mode of unicast the described empty information that disposes AP equipment is sent to described empty configuration AP equipment by Probe Response frame.
9. AP equipment as claimed in claim 7 is characterized in that, when described AP equipment is described empty configuration AP equipment,
Described processing module specifically is used to safeguard preferential neighbor table, and the information of the described AP of reaching the standard grade equipment is recorded in the described preferential neighbor table;
When needs are set up the Mesh link, determine preferentially to set up the Mesh link by the AP equipment of reaching the standard grade that writes down in the described preferential neighbor table.
10. as each described AP equipment of claim 7-9, it is characterized in that the information of described empty configuration AP equipment comprises: the type information of described empty configuration AP equipment; Perhaps, the type information and the sequence number information of described empty configuration AP equipment.
11. AP equipment as claimed in claim 10 is characterized in that, when described AP equipment is described empty configuration AP equipment,
Described processing module, also be used for when a plurality of AP of reaching the standard grade equipment send the message of the information of carrying described empty configuration AP equipment, determine that preferentially the type information by carrying described empty configuration AP equipment in the message and the AP equipment of reaching the standard grade of sequence number information sets up the Mesh link.
12. AP equipment as claimed in claim 10 is characterized in that, when described AP equipment is described empty configuration AP equipment,
Described processing module, also be used for when the AP equipment of reaching the standard grade sends the message of the type information that carries described empty configuration AP equipment, if do not have other AP equipment of reaching the standard grade to send the message of the information of carrying described empty configuration AP equipment in the described WLAN Mesh network, then determine preferentially to set up the Mesh link by the described AP of reaching the standard grade equipment.
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| CN2011102019282A CN102271421A (en) | 2011-07-19 | 2011-07-19 | Method and device for establishing Mesh link |
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| CN2011102019282A CN102271421A (en) | 2011-07-19 | 2011-07-19 | Method and device for establishing Mesh link |
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| CN105163322B (en) * | 2015-08-05 | 2018-08-03 | 福建星网锐捷网络有限公司 | A kind of method and system that wireless network extends automatically |
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| CN105357657A (en) * | 2015-10-20 | 2016-02-24 | 广东欧珀移动通信有限公司 | Mesh network construction method and device |
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| CN106376097B (en) * | 2016-08-31 | 2020-05-01 | 新华三技术有限公司 | Method and device for establishing Mesh connection |
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Application publication date: 20111207 |