CN103581971A - Method, device and access points for detecting abnormity of centralized wireless local area network - Google Patents
Method, device and access points for detecting abnormity of centralized wireless local area network Download PDFInfo
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- CN103581971A CN103581971A CN201210255853.0A CN201210255853A CN103581971A CN 103581971 A CN103581971 A CN 103581971A CN 201210255853 A CN201210255853 A CN 201210255853A CN 103581971 A CN103581971 A CN 103581971A
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Abstract
The invention provides a method, device and access points for detecting abnormity of a centralized wireless local area network. The method comprises the steps that an access controller divides a plurality of adjacent access points connected to the access controller into a set, configures appointed access points in the set, sends detection request messages to the other access points in the set through wireless interfaces to detect whether the wireless interfaces of the other access points are abnormal or not, and the access controller receives detection results reported by the appointed access points. According to the method, device and access points for detecting the abnormity of the centralized wireless local area network, the problem that the method for detecting whether the wireless interfaces of the access points are abnormal or not does not exist in the correlation technique is solved, so that the service quality of a network is improved, and the user experience is improved.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of method for detecting abnormality for Centralized Wireless LAN, device and access point.
Background technology
WLAN (wireless local area network) (Wireless Local Area Network, referred to as WLAN) is the Radio Access Network of setting up by IEEE802.11 series standard, and it can provide wireless access service at a high speed in less scope.Compare global mobile communication (Global system for Mobile Communication, referred to as GSM), code division multiple access (Code Distribute Multiple Access, referred to as CDMA), Long Term Evolution (Long-Term Evolution, referred to as LTE) etc. mobile communications network, its coverage is less, to mobile support also relatively a little less than, but message transmission rate is higher.The flank speed of 802.11n standard support has reached 600Mbps, and the flank speed of the 802.11ac standard of formulating has surpassed 1Gbps especially.In order to make up the defect of the network bandwidth deficiencies such as GSM, streamed data business, current operator is just at Large scale construction wlan network.
802.11 standard definitions infrastructure network as shown in Figure 1 (Infrastructure).Website in figure (Station, referred to as STA) represents to have the terminal equipment of radio function, such as the notebook with wifi function, mobile phone, panel computer etc.Access point (Access Point, referred to as access point) is responsible for providing wireless access service, and between website and website, or communicating by letter between website and cable network all must be undertaken by access point.
For large-scale wlan network, the One's name is legion of access point wherein, for the ease of management and configuration, generally adopts thin access point to add the networking mode of access controller (Access Controller, referred to as AC), as shown in Figure 2.Access controller is connected to each access point by cable network, can be direct connection therebetween, can be also to connect by two layers or three-layer switching equipment.Daily administration configuration operation can be carried out on access controller, and access controller can be issued to configuration parameter each access point automatically, has saved the trouble of each access point of human configuration.
In the running of the wlan network of this centralized management, may there are following abnormal conditions:
1) wired connection of access point and access controller disconnects.Conventionally may be because ethernet line is pulled out, or the switch reason such as go wrong.
2) wave point of access point can not normally be received and dispatched message.Conventionally may be because the reasons such as problem have appearred in wireless driving or the hardware of access point, wherein some problem access point can out also be repaired in self check, but some problem access points possibility oneself inspection is not out, or has checked out, but does not repair.
For abnormal conditions 1), in the communication protocol between access point and access controller General Definition keepalive mechanism, access point and access controller can periodically send keep-alive message mutually.By this keepalive mechanism, whether the wired connection that can detect between access controller and access point is normal.But, detect occur this abnormal after, can not automatically repair, in most cases still need to go to check in the scene of sending someone, just can find out abnormal cause and solve extremely, yet, during this period, be connected to the website that occurs on abnormal access point accesses network normally, therefore, if the overlong time of service disruption may cause customer complaint and dispute, reduce network service quality, reduce user and experience.
For abnormal conditions 2), also can cause wave point to occur normally accesses network of website on abnormal access point, yet, in correlation technique also not under the circumstances and propose a kind of detection method.
For above-mentioned problem one of at least in correlation technique, effective solution is not yet proposed at present.
Summary of the invention
The invention provides a kind of method for detecting abnormality for Centralized Wireless LAN, device and access point, at least to solve the problem that does not detect the whether abnormal method of the wave point of AP in correlation technique.
According to an aspect of the present invention, a kind of method for detecting abnormality for Centralized Wireless LAN is provided, it comprises: access controller is divided into one group by several adjacent access points that are connected to access controller, and whether configure the wave point of specifying access point to detect other access points by wave point to other access points transmission detection request messages in group in group abnormal; Access controller receives the testing result of specifying access point to report.
Preferably, specify the wave point of other access points in access point test set whether extremely to comprise: to specify access point interval predetermined period to send and detect request message to other access points by wave point; Specifying access point to determine not receive in Preset Time section the access point that detects response message is that abnormal access point appears in wave point.
Preferably, specify access point to be positioned at the overlapping place of the coverage of other access points.
Preferably, specify access point to be provided with the wireless radio frequency modules for communicating with other access points.
Preferably, other access points all report and in continuous several predetermined period, do not receive the in the situation that of detecting request message, and access controller determines that the wave point of appointment access point occurs extremely.
Preferably, after the testing result that access controller reception appointment access point reports, the above-mentioned method for detecting abnormality for Centralized Wireless LAN also comprises: whether access controller is abnormal according to the connection of other access points of detection information analysis that receive, wherein, detection information comprises testing result and wired testing result, and wired testing result is that access controller sends the acquisition of keep-alive packet check to other access points periodically; Access controller is determined the analysis result of other access points, and repairs abnormal.
Preferably, the analysis result of the access point in other access points is that wired connection disconnects, and in the normal situation of wave point, access controller configuration specifies access point as the message of relay forwarding access point.
Preferably, the analysis result of the access point in other access points is that wired connection is normal, and in the abnormal situation of wave point, access controller configuring access point carries out reset operation.
Preferably, the analysis result of the access point in other access points is that wired connection disconnects, and in the abnormal situation of wave point, or access point carries out in the situation of reset operation failure, and it is that the website that access point connects provides wireless access service that access point is specified in access controller configuration.
Preferably, the analysis result of the access point in other access points is that wired connection disconnects, and in the abnormal situation of wave point, or access point carries out in the situation of reset operation failure, the access point that access controller configuring access point is adjacent tunes up the website that transmitting power is access point connection wireless access service is provided.
Preferably, wired testing result of the access point in other access points is in situation about disconnecting, if access point receives enabling of access controller configuration within a predetermined period of time, specify access point to do the message of relaying, the wave point that access point is judged access point occurs abnormal.
According to a further aspect in the invention, a kind of abnormal detector for Centralized Wireless LAN is provided, it comprises: detection module, whether for several adjacent access points that are connected to access controller are divided into one group, and it is abnormal to configure the wave point of specifying access point to detect other access points by wave point to other access points transmission detection request messages in group in group; Receiver module, for receiving the testing result of specifying access point to report.
Preferably, the above-mentioned abnormal detector for Centralized Wireless LAN also comprises: analysis module, for whether abnormal according to the connection of other access points of detection information analysis that receive, wherein, detection information comprises testing result and wired testing result, and wired testing result is that access controller sends the acquisition of keep-alive packet check to other access points periodically; Processing module, for determining the analysis result of other access points, and repairs abnormal.
Preferably, processing module comprises: the first processing unit for the analysis result of the access point at other access points, be that wired connection disconnects, and in the normal situation of wave point, configuration specifies access point as the message of relay forwarding access point.
Preferably, processing module comprises: the second processing unit is that wired connection is normal for the analysis result of the access point at other access points, and in the abnormal situation of wave point, configuring access point carries out reset operation.
Preferably, processing module comprises: the 3rd processing unit, analysis result for the access point at other access points is that wired connection disconnects, and in the abnormal situation of wave point, or access point carries out in the situation of reset operation failure, the website that configuration appointment access point is access point connection provides wireless access service.
Preferably, processing module comprises: fourth processing unit, analysis result for the access point at other access points is that wired connection disconnects, and in the abnormal situation of wave point, or access point carries out in the situation of reset operation failure, the access point that access controller configuring access point is adjacent tunes up the website that transmitting power is access point connection wireless access service is provided.
According to another aspect of the invention, provide a kind of access point, it comprises: sending module, is sent and detect request message to other adjacent access points by wave point for interval predetermined period; Determination module, the access point that does not receive detection response message for determining in Preset Time section is that abnormal access point appears in wave point.
Preferably, above-mentioned access point also comprises: judge module, be used in the situation that wired testing result of the access point of other access points is disconnection, if access point receives enabling of access controller configuration within a predetermined period of time, do not specify access point to do the message of relaying, the wave point of judging access point occurs abnormal.
In the present invention, access controller is divided into one group by several adjacent access points that are connected to this access controller, whether and it is abnormal to configure the wave point of specifying access point to detect above-mentioned other access points by wave point to other access points transmission detection request messages in above-mentioned group in above-mentioned group, and receive the testing result that above-mentioned appointment access point reports, realized whether can automatically detect the wave point of access point normal, at the wave point of certain access point, occur when abnormal, can be automatically by said method, detect in time, contribute to repair in time abnormal, thereby contribute to improve the service quality of network, contribute to improve user's experience.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms the application's a part, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is according to the schematic diagram of the infrastructure network of 802.11 standard definitions of correlation technique;
Fig. 2 is according to the schematic diagram of the integral WLAN networking of correlation technique;
Fig. 3 is according to the flow chart of the method for detecting abnormality for Centralized Wireless LAN of the embodiment of the present invention;
Fig. 4 is according to the structured flowchart of the abnormal detector for Centralized Wireless LAN of the embodiment of the present invention;
Fig. 5 is the structured flowchart for the abnormal detector of Centralized Wireless LAN according to the another kind of the embodiment of the present invention;
Fig. 6 is according to the structured flowchart of the processing module of the embodiment of the present invention;
Fig. 7 is according to the structured flowchart of the access point of the embodiment of the present invention;
Fig. 8 is according to the structured flowchart of the another kind of access point of the embodiment of the present invention;
Fig. 9 be according to the employing of the embodiment of the present invention schematic diagram of networking of standby access point;
Figure 10 is according to the whether normal flow chart of the wave point of the detection access point of the embodiment of the present invention;
Figure 11 is according to the flow chart of the processing abnormal conditions 1 of the embodiment of the present invention;
Figure 12 is according to the schematic diagram of the result of the abnormal conditions 1 of the embodiment of the present invention; And
Figure 13 is according to the schematic diagram of the result of the abnormal conditions 3 of the embodiment of the present invention.
Embodiment
Hereinafter with reference to accompanying drawing, also describe the present invention in detail in conjunction with the embodiments.It should be noted that, in the situation that not conflicting, embodiment and the feature in embodiment in the application can combine mutually.
The present embodiment provides a kind of method for detecting abnormality for Centralized Wireless LAN, as shown in Figure 3, should comprise that step S302 was to step S304 for the method for detecting abnormality of Centralized Wireless LAN.
Step S302: access controller is divided into one group by several adjacent access points that are connected to access controller, and whether configure the wave point of specifying access point to detect other access points by wave point to other access points transmission detection request messages in group in group abnormal.
Step S304: access controller receives the testing result of specifying access point to report.
Pass through above-mentioned steps, above-mentioned access controller is divided into one group by several adjacent access points that are connected to this access controller, whether and it is abnormal to configure the wave point of specifying access point to detect above-mentioned other access points by wave point to other access points transmission detection request messages in above-mentioned group in above-mentioned group, and receive the testing result that above-mentioned appointment access point reports, realized whether can automatically detect the wave point of access point normal, at the wave point of certain access point, occur when abnormal, can be automatically by said method, detect in time, contribute to repair in time abnormal, thereby contribute to improve the service quality of network, contribute to improve user's experience.
Preferably, above-mentioned adjacent access point can judge in the following manner, the scan channel result judgement reporting according to each access point, if the ten-fours such as the coordinate of each access point, transmitting power, wireless channel model is set up, can directly estimate the coverage of each access point, judge whether adjacent.
Preferably, above-mentioned appointment access point and other access points can belong to a plurality of access point groupings simultaneously, and play the part of different role in each grouping, and for example, it can work as appointment access point in a grouping, and does common group member in another one grouping.
For meeting the demand of different application scene, reduce the impact on the regular traffic of above-mentioned appointment access point as far as possible, in this preferred embodiment, whether the wave point that above-mentioned appointment access point detects other access points in above-mentioned group comprises extremely: above-mentioned appointment access point interval predetermined period is sent and detects request message to above-mentioned other access points by wave point; Above-mentioned appointment access point determines that in Preset Time section, not receiving the access point that detects response message is that abnormal access point appears in wave point.Can select different predetermined period to send above-mentioned detection request message according to different application demand, when whether the wave point of realizing above-mentioned other access points of detection is abnormal, reduce the impact of testing on the regular traffic of above-mentioned appointment access point as far as possible.
In order to realize above-mentioned appointment access point, by wave point, to above-mentioned other access points, send above-mentioned detection request message, be to carry out direct communication between adjacent access point, in this preferred embodiment, can realize in the following manner, for example, above-mentioned appointment access point is positioned at the overlapping place of the coverage of other access points.Can be in the coverage of above-mentioned appointment access point in order to ensure above-mentioned other access points, realize direct communication, above-mentioned appointment access point can be positioned at the overlapping place of the coverage of above-mentioned other access points, to reduce distance between above-mentioned other access points and above-mentioned appointment access point, this appointment access point can be standby access point, and whether the wave point of being only responsible for above-mentioned other access points of detection is abnormal.
In order to ensure can directly communicating between adjacent access port, in this preferred embodiment, above-mentioned appointment access point is provided with the wireless radio frequency modules for communicating with above-mentioned other access points.Because adjacent access point is in order to reduce co-channel interference, neighboring access point is usually operated at different channels, in order to realize between adjacent access port, can directly communicate, above-mentioned appointment access point is communicated by letter by being specifically designed to the wireless radio frequency modules communicating with above-mentioned other access points, contributes to improve the efficiency of communication.
Preferably, because adjacent access point is in order to reduce co-channel interference, neighboring access point is usually operated at different channels, for example, 1/6/11 channel interlacing distributes, and in order to ensure can directly communicating between adjacent access port, above-mentioned appointment access point can be switched on the channel of above-mentioned other access points and send detection request message, and receiving detection response message or in a period of time, do not receiving after detection response message, then switching is got back on the channel of oneself.
In order to meet different application scenarioss, in this preferred embodiment, above-mentioned other access points all report the in the situation that of not receiving above-mentioned detection request message in continuous several above-mentioned predetermined period, and it is abnormal that above-mentioned access controller determines that the wave point of above-mentioned appointment access point occurs.Whether the wave point that can detect in time above-mentioned appointment access point is abnormal.
Preferably, when detecting the wave point of above-mentioned access point, occur when abnormal, can again in above-mentioned group, select again one to specify access point, or repartition access point grouping.If in above-mentioned other access points, only have part access point report continuously several pre-above-mentioned establishing in the cycle, do not receive above-mentioned detection request message, the wave point that is likely these access points goes wrong, but be likely also because they from specify access point too away from.
In order effectively to improve the service quality of network, improve user's experience, in this preferred embodiment, after above-mentioned access controller receives the testing result that above-mentioned appointment access point reports, whether above-mentioned access controller is abnormal according to the connection of above-mentioned other access points of detection information analysis that receive, wherein, above-mentioned detection information comprises above-mentioned testing result and wired testing result, and this wired testing result is that above-mentioned access controller sends the acquisition of keep-alive packet check to above-mentioned other access points periodically; Above-mentioned access controller is determined the analysis result of above-mentioned other access points, and repairs abnormal.In abnormal situation, can automatically abnormal conditions be repaired appears in the connection that access point detected, to shorten, repairs the abnormal needed time, reduces the impact on customer access network, and then effectively improves the service quality of network, improves user's experience.
For the different abnormal conditions that detect, can repair in the following manner abnormal, for example, the analysis result of the access point in other access points is that wired connection disconnects, and in the normal situation of wave point, above-mentioned access controller configures above-mentioned appointment access point as the message of the above-mentioned access point of relay forwarding, by specifying access point to come relaying to occur the message of abnormal access point.
Preferably, for the ease of above-mentioned appointment access point, know the website that occurs that abnormal access point connects, above-mentioned appointment access point and occurring can adopt the wireless data frame of the 802.11MAC frame format of 4 addresses to carry out trunking traffic between abnormal access point, so that above-mentioned appointment access point can automatic learning be to be connected to occur on abnormal access point to which website, certainly, also can increase control message, allow the abnormal access point of appearance that the address list that is connected to the website on it is informed to above-mentioned appointment access point.
The analysis result of the access point in other access points is that wired connection is normal, and in the abnormal situation of wave point, above-mentioned access controller configuration occurs that abnormal access point carries out reset operation, to can repair rapidly, easily abnormal.
The analysis result of the access point in other access points is that wired connection disconnects, and in the abnormal situation of wave point, or access point carries out in the situation of reset operation failure, above-mentioned access controller configures above-mentioned appointment access point and provides wireless access service for there is the website that abnormal access point connects.
In order to improve the flexibility of the present embodiment, in this preferred embodiment, the analysis result of the access point in other access points is that wired connection disconnects, and in the abnormal situation of wave point, or access point carries out in the situation of reset operation failure, it is that the website that the abnormal access point of above-mentioned appearance connects provides wireless access service that the access point that above-mentioned access controller configures the abnormal adjacency of access points of above-mentioned appearance tunes up transmitting power.
Certainly, for easily, rapidly repair abnormal, can select the transmitting power that first tunes up the access point that occurs abnormal adjacency of access points to provide wireless access service for there is the website that abnormal access point connects, if repairing failure, can for there is the website that abnormal access point connects, provide wireless access service by the above-mentioned appointment access point of option and installment, now the overlapping place of above-mentioned appointment access point in other access points.
In order to improve the flexibility of the present embodiment, in this preferred embodiment, wired testing result of the access point in above-mentioned other access points is in situation about disconnecting, if this access point does not receive the message that above-mentioned appointment access point is made relaying of enabling of above-mentioned access controller configuration within a predetermined period of time, the wave point that this access point is judged this access point occurs abnormal.
This preferred embodiment provides a kind of abnormal detector for Centralized Wireless LAN, as shown in Figure 4, should comprise for the abnormal detector of Centralized Wireless LAN: detection module 402, whether for several adjacent access points that are connected to access controller are divided into one group, and it is abnormal to configure the wave point of specifying access point to detect other access points by wave point to other access points transmission detection request messages in group in group; Receiver module 404, is connected to detection module 402, for receiving the testing result of specifying access point to report.
In above preferred embodiment, detection module 402 is divided into one group by several adjacent access points that are connected to above-mentioned access controller, whether and it is abnormal to configure the wave point of specifying access point to detect above-mentioned other access points by wave point to other access points transmission detection request messages in above-mentioned group in above-mentioned group, receiver module 404 receives the testing result that above-mentioned detection module 402 reports, realized whether can automatically detect the wave point of access point normal, at the wave point of certain access point, occur when abnormal, can be automatically by said method, detect in time, contribute to repair in time abnormal, thereby contribute to improve the service quality of network, contribute to improve user's experience.
In order effectively to improve the service quality of network, improve user's experience, in this preferred embodiment, as shown in Figure 5, on also for the abnormal detector of Centralized Wireless LAN, comprise: analysis module 406, for whether abnormal according to the connection of other access points of detection information analysis that receive, wherein, detection information comprises testing result and wired testing result, and wired testing result is that access controller sends the acquisition of keep-alive packet check to other access points periodically; Processing module 408, is connected to analysis module 406, for determining the analysis result of other access points, and repairs abnormal.
For the different abnormal conditions that detect, as shown in Figure 6, above-mentioned processing module 408 can be repaired extremely in the following manner, for example, the first processing unit 4082, analysis result for the access point at other access points is that wired connection disconnects, and in the normal situation of wave point, configuration specifies access point as the message of relay forwarding access point.
The second processing unit 4084, is that wired connection is normal for the analysis result of the access point at other access points, and in the abnormal situation of wave point, configuring access point carries out reset operation.
The 3rd processing unit 4086, analysis result for the access point at other access points is that wired connection disconnects, and in the abnormal situation of wave point, or access point carries out in the situation of reset operation failure, and it is that the website that access point connects provides wireless access service that access point is specified in configuration.
Fourth processing unit 4088, analysis result for the access point at other access points is that wired connection disconnects, and in the abnormal situation of wave point, or access point carries out in the situation of reset operation failure, the access point that access controller configuring access point is adjacent tunes up the website that transmitting power is access point connection wireless access service is provided.
A kind of preferred access point is provided in this preferred embodiment, and as shown in Figure 7, this access point comprises: sending module 702, is sent and detect request message to other adjacent access points by wave point for interval predetermined period; Determination module 704, is connected to sending module 702, and the access point that does not receive detection response message for determining in Preset Time section is that abnormal access point appears in wave point.
In order to improve the flexibility of the present embodiment, in this preferred embodiment, as shown in Figure 8, above-mentioned access point also comprises: judge module 706, be used in the situation that wired testing result of the access point of other access points is disconnection, if access point receives enabling of access controller configuration within a predetermined period of time, do not specify access point to do the message of relaying, the wave point of judging access point occurs abnormal.
Below in conjunction with accompanying drawing, above-mentioned each preferred embodiment is described in detail.
Access point grouping can realize in the following way:
Access controller is divided into one group by adjacent some access points, and select one of them access point as group leader's (being equivalent to above-mentioned appointment access point), how does access controller judge that whether each access point adjacent? the scan channel result judgement that can report according to each access point.If ten-fours such as the coordinate of each access point, transmitting powers, wireless channel model has been set up, also can directly estimate the coverage of each access point, judges whether adjacent.
An access point can belong to a plurality of access point groupings simultaneously, and plays the part of different role in each grouping, and for example, it can work as group leader in a grouping, and does common group member in another one grouping.
Whether detect wired connection normally can realize in the following manner:
The CAPWAP agreement of standard is generally followed in communicating by letter between access controller and access point, has defined keepalive mechanism in this agreement, and whether the wired connection that can detect between access controller and access point by this keepalive mechanism is normal.
Whether detect access point wave point normally can realize in the following manner:
In the grouping of each access point, whether the wave point of being responsible for periodically detecting each group member (being equivalent to above-mentioned other access points) by group leader is working properly.Detection method is that group leader passes through wave point, directly to each group member, send detection request message, after group member receives, by wave point, send to detect and reply (response) message, group leader receives the detection of group member's transmission and replys (response) message, this group member's wave point is normal, if group leader does not receive the detection of certain group member's transmission and replys (response) message within a period of time, determine that this group member's wave point is normal.After detection finishes, group leader is responsible for reporting testing result to access controller.
At the above-mentioned method for detecting abnormality for Centralized Wireless LAN, realized between neighboring access point and can pass through wave point direct communication, and access point in correlation technique is designed to originally only for website provides wireless access service, and to realize detection method above, need can pass through wave point direct communication between neighboring access point.During practical application, need to overcome two obstacles: the one, in order to reduce co-channel interference, neighboring access point is usually operated at different channels, as 1/6/11 channel interlacing distributes; The 2nd, in order to reduce adjacent frequency, disturb, during actual deployment, in the situation that guaranteeing not cover blind spot, generally can increase the spacing of access point as far as possible, and reduce the transmitting power of access point, neighboring access point may be mutually within coverage like this, and neighboring access is pressed normal possibly of transmitting power cannot direct communication.
For obstacle 1, the solution of taking can be when needs detect certain group member, allows and as group leader's access point, is switched to the channel at this group member place temporarily, and this group member is executed and detected after operation, and group leader returns to the channel of its normal operation again.While having a plurality of group members to detect, each group member's detection can discontinuously be carried out, certain interval of time, as 1 second, to reduce the impact on group leader's regular traffic.
For obstacle 2, if the transmitting power in access point when normal operation does not also reach its maximum transmission power, and it supports that packet-by-packet power is controlled, so can be when sending wave point detection messages, use maximum power sends, and adjacent like this access point has just likely been received.In order to ensure sending successfully, RTS/CTS mechanism is used in suggestion, first sends RTS(Request To Send), wait and receive neighboring access point reply CTS(Clear To Send) after, then send detection messages.
If transmitting power is increased to maximum, neighboring access point or can not direct communication, that is just only at the standby access point of overlapping place's increase of the coverage of neighboring access point, as shown in Figure 9.Access controller will join this standby access point in grouping, and elects it as group leader (being equivalent to above-mentioned appointment access point).Usually it does not provide wireless access service to website, and whether the wave point of being just responsible for the adjacent several access points of detection is working properly.In adjacent access point work, occur when abnormal, wireless message repeating service be just provided, or directly to website, provide wireless access service, refer to the description to abnormality processing below.
In this preferred embodiment, the example that is grouped into forming with three access points is described the whether normal process of wave point that detects access point, Figure 10 is according to the whether normal flow chart of the wave point of the detection access point of the embodiment of the present invention, as shown in figure 10, the process that this wave point detects can comprise the steps:
Step S1002: sense cycle arrives, group leader is switched on the channel of group member's 1 work temporarily, to group member 1, sends and detects request message;
Step S1004: group leader receives the detection response message that group member 1 sends, and switches back the channel of group leader's normal operation, determines that group member 1 wave point is normal, the message of transceiver station;
Step S1006: wait for after the second, group leader is switched on the channel of group member's 2 work temporarily, sends and detects request message to group member 2;
Step S1008: group leader receives the detection response message that group member 2 sends, and switches back the channel of group leader's normal operation, determines that group member 2 wave point is normal;
Step S1010: group leader reports testing result to access controller, waits for the arrival of next sense cycle.
For different testing results, can adopt following abnormality processing mode:
By access controller, according to the testing result of the testing result of wired connection and wave point, judge that whether access point work is normal, two testing results combine, there are four kinds of situations, wherein there are three kinds to be abnormal conditions, for different testing results, can adopt following abnormality processing mode:
Abnormal conditions 1: the wired connection of access point and access controller disconnects, but wave point still works.Processing mode is the access point of specifying certain normal operation, is exactly group leader conventionally, as wireless relay, forwards the message of the access point transmitting-receiving that occurs abnormal 1.
Figure 11 is according to the flow chart of the processing abnormal conditions 1 of the embodiment of the present invention, and as shown in figure 11, this processing procedure can comprise the steps:
Step S1102: first access controller gives group leader's transmitting order to lower levels, allows group leader provide wireless relay service to the access point that occurs abnormal 1.
Step S1104: group leader is switched to the channel of the access point work that occurs abnormal 1 temporarily, to it, send a piece of news, indicate it to use wireless relay service, should comprise the channel number using when group leader works in this message, then group leader is switched back the channel of normal operation.
Step S1106: occur that abnormal 1 access point receives after above-mentioned message, be switched to the channel of group leader's normal operation, send acknowledge message.Before switching channels, occur that abnormal 1 access point also should disconnect with all websites that are connected to above it.After switching channels, website generally can reconnect automatically.
Step S1108: if group leader receives acknowledge message, to the successful message of access controller transmission processing.If can not receive, first carry out scan channel operation, determine the channel of the access point work at present that occurs abnormal 1, then repeating step S1102.If retry several times, all confiscate confirmation, to access controller, return to failed message.
Be successfully completed after interaction flow above, the passage of wireless relay has just been opened.Figure 12 is according to the schematic diagram of the result of the abnormal conditions 1 of the embodiment of the present invention, as shown in figure 12, suppose that group member 2 wired connection has disconnected, group member 2 is by the data message of the website of receiving from wave point, by wave point, be forwarded to group leader, then be forwarded to access controller by group leader; Otherwise access controller also can first be issued group leader, then be transmitted to group member 2 by group leader by wave point mailing to the data message of the website under group member 2, finally arrives website.
Group leader and occur that the wireless data frame of transmitting between abnormal 1 access point adopts the 802.11MAC frame format of 4 addresses, group leader can automatic learning be to be connected on the access point that occurs abnormal 1 to which website.Certainly, also can increase control message, allow the access point of appearance abnormal 1 inform group leader.
Abnormal conditions 2: the wired connection of access point and access controller is normal, but the wave point cisco unity malfunction of access point.Processing mode can be that first access controller is attempted sending order to this access point, notifies its to carry out reset wireless chip, or/and the operation of Reset Board, general like this have greater probability to repair that this is abnormal.If can't, by abnormal conditions 3, process.
Abnormal conditions 3: the wired connection of access point and access controller disconnects, and wave point can not work.Processing mode can be that access controller is notified adjacent normal access point, transmitting power is tuned up, to receive original connection to occur the website on abnormal 3 access point, Figure 13 is according to the schematic diagram of the result of the abnormal conditions 3 of the embodiment of the present invention, as shown in figure 13, if there is standby access point, also can order standby access point to start to provide wireless access service to website, replace occurring abnormal 3 access point.
Occurring that on abnormal access point,, if the software of this access point can also move, this access point can carry out reset operation again.
Group leader's access point sends after the request of detection to certain group member's access point, if can not receive, detect response, its reason except the wireless interface operation of this group member's access point undesired, the wireless interface operation that is likely also group leader's access point is undesired, likely also that variation has occurred wireless environment, for example in the middle of how barrier.In order to reduce erroneous judgement, preferably, if group member does not receive the detection request message that group leader sends in continuous several cycles, also to report access controller.On access controller, comprehensively group leader and each group member's reported result judges.If arbitrary group member's detection response is received in group leader's report,, no matter this group member's reported result how, can judge that this group member's wireless interface operation is normal, also can judge that group leader's wireless interface operation is normal simultaneously.If group leader reports all group members' detection response and does not receive, judge according to reporting the result of group member again.If all group members report the request message of not receiving that group leader sends, can think that group leader's wave point goes wrong, processing mode is to reselect group leader, or repartitions access point grouping.If only have part group member report, do not receive request message, the wave point that is likely these group members goes wrong, but be likely also because they from group leader too away from, can first suppose it is that group member's wave point occurs abnormal, to this group member's access point transmitting order to lower levels, notify it to carry out reset operation.If can not repair, access controller reattempts grouping again.
In addition, the access service of providing in order not affect group leader's access point its website, can consider increases a wireless radio frequency modules to the access point as group leader, and special execution detected operation and provided wireless relay service to other access point.But can increase hardware cost like this, and will carry out hardware modification to the access point of having disposed, cost is higher.
From above description, can find out, the present invention has realized following technique effect: above-mentioned access controller is divided into one group by several adjacent access points that are connected to this access controller, whether and it is abnormal to configure the wave point of specifying access point to detect above-mentioned other access points by wave point to other access points transmission detection request messages in above-mentioned group in above-mentioned group, and receive the testing result that above-mentioned appointment access point reports, realized whether can automatically detect the wave point of access point normal, at the wave point of certain access point, occur when abnormal, can be automatically by said method, detect in time, contribute to repair in time abnormal, thereby contribute to improve the service quality of network, contribute to improve user's experience.In abnormal situation, can automatically abnormal conditions be repaired appears in the connection that access point detected, to shorten, repairs the abnormal needed time, reduces the impact on customer access network, and then effectively improves the service quality of network, improves user's experience.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on the network that a plurality of calculation elements form, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in storage device and be carried out by calculation element, and in some cases, can carry out shown or described step with the order being different from herein, or they are made into respectively to each integrated circuit modules, or a plurality of modules in them or step are made into single integrated circuit module to be realized.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (19)
1. for a method for detecting abnormality for Centralized Wireless LAN, it is characterized in that, comprising:
Access controller is divided into one group by several adjacent access points that are connected to described access controller, and whether configure the wave point of specifying access point to detect described other access points by wave point to other access points transmission detection request messages in described group in described group abnormal;
Described access controller receives the testing result that described appointment access point reports.
2. method according to claim 1, is characterized in that, whether the wave point that described appointment access point detects other access points in described group comprises extremely:
Described appointment access point interval predetermined period is sent and detects request message to described other access points by wave point;
Described appointment access point determines that in Preset Time section, not receiving the access point that detects response message is that abnormal access point appears in wave point.
3. method according to claim 1 and 2, is characterized in that, described appointment access point is positioned at the overlapping place of the coverage of described other access points.
4. method according to claim 1 and 2, is characterized in that, described appointment access point is provided with the wireless radio frequency modules for communicating with described other access points.
5. method according to claim 1 and 2, it is characterized in that, described other access points all report in the situation that continuously not receiving described detection request message in predetermined period described in several, and it is abnormal that described access controller determines that the wave point of described appointment access point occurs.
6. method according to claim 1, is characterized in that, described access controller also comprises after receiving the testing result that described appointment access point reports:
Whether described access controller is abnormal according to the connection of other access points described in the detection information analysis receiving, wherein, described detection information comprises described testing result and wired testing result, and described wired testing result is that described access controller sends the acquisition of keep-alive packet check to described other access points periodically;
Described access controller is determined the analysis result of described other access points, and repairs abnormal.
7. method according to claim 6, it is characterized in that, the analysis result of the access point in described other access points is that wired connection disconnects, and in the normal situation of wave point, described access controller configures described appointment access point as the message of access point described in relay forwarding.
8. method according to claim 6, is characterized in that, the analysis result of the access point in described other access points is that wired connection is normal, and in the abnormal situation of wave point, described access controller configures described access point and carries out reset operation.
9. method according to claim 8, it is characterized in that, the analysis result of the access point in described other access points is that wired connection disconnects, and in the abnormal situation of wave point, or described access point carries out in the situation of reset operation failure, described access controller configures the website that described appointment access point is described access point connection wireless access service is provided.
10. method according to claim 8, it is characterized in that, the analysis result of the access point in described other access points is that wired connection disconnects, and in the abnormal situation of wave point, or described access point carries out in the situation of reset operation failure, it is that the website that described access point connects provides wireless access service that the access point that described access controller configures described adjacency of access points tunes up transmitting power.
11. according to the method described in claim 6 or 7, it is characterized in that, wired testing result of the access point in described other access points is in situation about disconnecting, if described access point does not receive the message that described appointment access point is made relaying of enabling of described access controller configuration within a predetermined period of time, the wave point that described access point is judged described access point occurs abnormal.
12. 1 kinds of abnormal detectors for Centralized Wireless LAN, is characterized in that, comprising:
Detection module, whether for several adjacent access points that are connected to access controller are divided into one group, and it is abnormal to configure the wave point of specifying access point to detect described other access points by wave point to other access points transmission detection request messages in described group in described group;
Receiver module, the testing result reporting for receiving described appointment access point.
13. devices according to claim 12, is characterized in that, also comprise:
Analysis module, for whether abnormal according to the connection of other access points described in the detection information analysis receiving, wherein, described detection information comprises described testing result and wired testing result, and described wired testing result is that described access controller sends the acquisition of keep-alive packet check to described other access points periodically;
Processing module, for determining the analysis result of described other access points, and repairs abnormal.
14. devices according to claim 13, is characterized in that, described processing module comprises:
The first processing unit, is that wired connection disconnects for the analysis result of the access point at described other access points, and in the normal situation of wave point, configures described appointment access point as the message of access point described in relay forwarding.
15. devices according to claim 13, is characterized in that, described processing module comprises:
The second processing unit, is that wired connection is normal for the analysis result of the access point at described other access points, and in the abnormal situation of wave point, configures described access point and carry out reset operation.
16. devices according to claim 15, is characterized in that, described processing module comprises:
The 3rd processing unit, analysis result for the access point at described other access points is that wired connection disconnects, and in the abnormal situation of wave point, or described access point carries out in the situation of reset operation failure, configure the website that described appointment access point is that described access point connects wireless access service is provided.
17. devices according to claim 15, is characterized in that, described processing module comprises:
Fourth processing unit, analysis result for the access point at described other access points is that wired connection disconnects, and in the abnormal situation of wave point, or described access point carries out in the situation of reset operation failure, it is that the website that described access point connects provides wireless access service that the access point that described access controller configures described adjacency of access points tunes up transmitting power.
18. 1 kinds of access points, is characterized in that, comprising:
Sending module, is sent and detects request message to other adjacent access points by wave point for interval predetermined period;
Determination module, the access point that does not receive detection response message for determining in Preset Time section is that abnormal access point appears in wave point.
19. access points according to claim 18, is characterized in that, also comprise:
Judge module, be used in the situation that wired testing result of the access point of described other access points is disconnection, if described access point does not receive the message that described appointment access point is made relaying of enabling of described access controller configuration within a predetermined period of time, the wave point of judging described access point occurs abnormal.
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