CN105409280B

CN105409280B - Wireless local area network access method, device and equipment

Info

Publication number: CN105409280B
Application number: CN201380078492.XA
Authority: CN
Inventors: 邢志浩
Original assignee: Huawei Technologies Co Ltd
Current assignee: XFusion Digital Technologies Co Ltd
Priority date: 2013-12-30
Filing date: 2013-12-30
Publication date: 2019-11-29
Anticipated expiration: 2033-12-30
Also published as: WO2015100562A1; CN105409280A

Abstract

The embodiment of the present invention provides a kind of wireless local area network access method, device and equipment, this method comprises: site apparatus sends E-AREQ message to the first AP equipment, which carries at least one information in the link quality information of alternative AP equipment and the location information of the site apparatus；Site apparatus receives access controller and passes through the E-ARSP message that the 2nd AP equipment is sent, and E-ARSP message includes the MAC Address and working channel of purpose AP equipment；Site apparatus completes networking association process according to the MAC Address and working channel of purpose AP equipment.The present invention passes through in the mutual message of site apparatus and access controller, increase redirection information element, association redirection mechanism during the networking of support site equipment, so as to improve access controller unilaterally determine AP equipment when because to the network information understanding it is limited caused by non-dominance, under the conditions of guaranteeing AP dense deployment, site apparatus preferentially networks.

Description

Wireless local area network access method, device and equipment

Technical field

The present embodiments relate to wireless communication technique more particularly to a kind of wireless local area network access method, device and set It is standby.

Background technique

In the IEEE 802.11 standards, website (Station, referred to as: STA) equipment access access point (Access Point, Referred to as: AP) equipment when, beacon frame scanning is carried out on each channel that it is supported first, according to scanning result by specific selection Standard independently selects the AP equipment to be accessed, and then initiates certification and association process to the AP equipment.

In hot spot region, for example, square or library etc., the possible dense deployment of AP equipment, when site apparatus is scanned After finding which AP equipment access multiple available AP equipment, site apparatus select directly determine site apparatus access network The performance of service quality and network entirety.

In the prior art, it networks the stage in site apparatus, access controller (Access Controller, referred to as: AC) root According to current network conditions, by specific AP equipment hidden method, so that present load heavier AP equipment in part can not be incited somebody to action The site apparatus to be networked is found in scan phase, to provide certain load balance ability.Two kinds are specifically included to entering in advance The method that website point device hides AP equipment:

Method one: allowing the transmission beacon frame of specific AP equipment dwelling period, scan it can not by site apparatus and arrive, real Now hide purpose；

Method two: it when site apparatus is broadcasted using active scan mode seeks frame (Probe Request Frame), needs Even if the AP equipment for hiding itself receives this and seeks frame, any response is not done yet.

When hiding AP equipment using the above method, the case where site apparatus periphery can be associated with without AP equipment may cause； In addition, the AP equipment that site apparatus can access unilaterally is controlled by AC, which open AP equipment of AC unilateral decision is to station Point device access.Therefore in the prior art, it not can guarantee site apparatus and select suitable AP equipment when accessing WLAN It is accessed.

Summary of the invention

The embodiment of the present invention provides a kind of wireless local area network access method, device and equipment, in AP equipment dense deployment item Under part, solve the problems, such as suitable AP equipment can not be selected to be accessed when site apparatus networks.

In a first aspect, the embodiment of the present invention provides a kind of wireless local area network access method, comprising:

Site apparatus sends enhancing association request message to the first access point AP equipment, so that the first AP equipment is by institute It states enhancing association request message and is sent to access controller, the enhancing association request message carries the link matter of alternative AP equipment At least one information in the location information of information and the site apparatus is measured, the alternative AP equipment is site apparatus scanning The AP equipment arrived；

The site apparatus receives the access controller and passes through the enhancing associated response message that the 2nd AP equipment is sent, institute State the medium access control MAC Address and working channel that enhancing associated response message includes purpose AP equipment；

The site apparatus completes networking association process according to the MAC Address and working channel of the purpose AP equipment.

With reference to first aspect, in the first possible implementation of the first aspect, the enhancing association request message Also carry:

The service quality QoS demand information and/or redirection range of the site apparatus, the redirection range is for referring to Show the range for determining the purpose AP equipment.

With reference to first aspect or the first possible implementation of first aspect, second in first aspect are possible In implementation, before the site apparatus sends enhancing association request message to the first AP equipment, the method also includes:

The site apparatus obtains the beacon frame that at least one access controller issues, if being determined according to the beacon frame The access controller has association redirection ability, then sends enhancing association request message to the first AP equipment；Alternatively,

The site apparatus obtains the probing response frame that at least one described access controller issues, if according to the detection Response frame determines that the access controller has association redirection ability, then sends enhancing association request message and set to the first AP It is standby.

With reference to first aspect, any one of the first of first aspect into second of possible implementation, In the third possible implementation of one side, the site apparatus sends enhancing association request message to the first AP equipment packet It includes:

Enhancing association request message described in the site apparatus broadcast transmission gives the first AP equipment, so that described first Site apparatus described in AP equipment evaluation to the first AP equipment link quality information, and by the link matter of the first AP equipment Amount information is added in the enhancing association request message, is forwarded to the access controller；Alternatively,

The site apparatus unicast sends the enhancing association request message to the first AP equipment, so that described first The enhancing association request message is forwarded to the access controller by AP equipment.

With reference to first aspect, any one of the first of first aspect into the third possible implementation, In 4th kind of possible implementation of one side, MAC Address and work of the site apparatus according to the purpose AP equipment Channel completes networking association process, comprising:

If the site apparatus determines that the working channel of its own and the working channel of the purpose AP equipment mismatch, Its working channel is switched to the working channel of the purpose AP equipment by the site apparatus, and according to the purpose AP equipment MAC Address completes networking association process；

If the site apparatus determines that the working channel of its own is matched with the working channel of the purpose AP equipment, root Networking association process is completed according to the MAC Address of the purpose AP equipment.

The 4th kind of possible implementation with reference to first aspect, in the 5th kind of possible implementation of first aspect In, the site apparatus is according to the MAC Address and working channel of the purpose AP equipment, before completing networking association process, institute State method further include:

If the site apparatus, which determines, does not receive beacon frame or probing response frame that the purpose AP equipment is sent, send out Send probe request to the purpose AP equipment；

The site apparatus receives the probing response frame that the purpose AP equipment is sent, and obtains and takes in the probing response frame The parameter information of band.

With reference to first aspect, any one of the first of first aspect into the 5th kind of possible implementation, In 6th kind of possible implementation of one side, the first AP equipment and the 2nd AP equipment are same AP equipment.

Second aspect, the embodiment of the present invention provide a kind of wireless local area network access method, comprising:

Access controller receives the enhancing association request message that the first access point AP equipment is sent, the enhancing association request Message carries at least one information in the link quality information of alternative AP equipment and the location information of site apparatus, the alternative AP Equipment is the AP equipment that site apparatus scans, and the enhancing association request message is sent to described first by the site apparatus AP equipment；

The access controller determines purpose AP equipment according to the enhancing association request message；

The access controller is sent to the site apparatus for associated response message is enhanced by the 2nd AP equipment, described Enhancing associated response message carries the medium access control MAC Address and working channel of the purpose AP equipment, so that the station Point device completes networking association process according to the enhancing associated response message.

In conjunction with second aspect, in the first possible implementation of the second aspect, the enhancing association request message Also carry:

The service quality QoS demand and/or redirection range, the redirection range of the site apparatus are used to indicate really The range of the fixed purpose AP equipment.

In conjunction with the first possible implementation of second aspect, in second of possible implementation of second aspect In, the access controller determines purpose AP equipment according to the enhancing association request message, comprising:

The access controller is set according to the link quality information and operating status of the alternative AP equipment and the website Standby attribute information and QoS demand information, the association for obtaining each alternative AP equipment is suitable for angle value, and described be associated with is suitable for angle value Refer to AP equipment and the associated suitable degree of site apparatus；

The access controller determines that the association of each alternative AP equipment is suitable for the maximum value in angle value, and by described in most It is worth corresponding alternative AP equipment AP equipment as a purpose greatly.

In conjunction with second of possible implementation of second aspect, in the third possible implementation of second aspect In, if the range that redirects is each alternative AP equipment that the enhancing association request message carries, the access controller Determine that it is purpose AP equipment that the suitable maximum AP equipment of angle value is associated in each alternative AP equipment；Alternatively,

If described redirect in each alternative AP equipment and pre-determined distance that range is the enhancing association request message carrying AP equipment, then the access controller determine be associated in each alternative AP equipment and the AP equipment in the pre-determined distance it is suitable The suitable maximum AP equipment of angle value is purpose AP equipment.

In conjunction with second aspect, second aspect the first into the third possible implementation any one, second In 4th kind of possible implementation of aspect, the access controller will enhance associated response message hair by the 2nd AP equipment Give the site apparatus, comprising:

If the enhancing association request message is what the site apparatus unicast was sent, the access controller passes through institute It states the first AP equipment and the enhancing associated response message is sent to the site apparatus；Alternatively,

If the enhancing association request message is the site apparatus broadcast transmission, the access controller passes through institute It states the 2nd AP equipment and the enhancing associated response message is sent to the site apparatus, the 2nd AP equipment is the enhancing Any AP equipment in association request message.

The third aspect, the embodiment of the present invention provide a kind of Wireless LAN access device, comprising:

First sending module, for sending enhancing association request message to the first access point AP equipment, the enhancing association Request message carries at least one information in the link quality information of alternative AP equipment and the location information of site apparatus, described standby Selecting AP equipment is the AP equipment that the site apparatus scans；

First receiving module passes through the enhancing associated response report that the 2nd AP equipment is sent for receiving the access controller Text, the enhancing associated response message include the medium access control MAC Address and working channel of purpose AP equipment；

First processing module is connect with first sending module and first receiving module, for according to the mesh AP equipment MAC Address and working channel, complete networking association process.

In conjunction with the third aspect, in the first possible implementation of the third aspect, the enhancing association request message Also carry:

In conjunction with the possible implementation of the first of the third aspect or the third aspect, second in the third aspect is possible In implementation, first receiving module is also used to obtain the beacon frame that at least one access controller issues；

If then the first processing module is also used to the beacon frame obtained according to first receiving module, institute is determined It states access controller and has association redirection ability, then trigger first sending module and send the enhancing association request message To the first AP equipment.

In conjunction with the possible implementation of the first of the third aspect or the third aspect, the third in the third aspect is possible In implementation, first receiving module is also used to obtain the probing response frame that at least one described access controller issues；

If then the first processing module is also used to the probing response frame obtained according to first receiving module, really The fixed access controller has association redirection ability, then triggers first sending module and send the enhancing association request Message gives the first AP equipment.

In conjunction with the third aspect, the third aspect the first into the third possible implementation any one, in third In 4th kind of possible implementation of aspect, first sending module is specifically used for:

Enhancing association request message described in broadcast transmission gives the first AP equipment, so that the first AP equipment evaluation institute Site apparatus is stated to the link quality information of the first AP equipment, and the link quality information of the first AP equipment is added to In the enhancing association request message, it is forwarded to the access controller；Alternatively,

Unicast sends the enhancing association request message to the first AP equipment, so that the first AP equipment will be described Enhancing association request message is forwarded to the access controller.

In conjunction with the third aspect, the third aspect the first into the 4th kind of possible implementation any one, in third In 5th kind of possible implementation of aspect, the first processing module is specifically used for:

If it is determined that the working channel of the site apparatus and the working channel of the purpose AP equipment mismatch, then it will be described The working channel of site apparatus is switched to the working channel of the purpose AP equipment, and according to the MAC of the purpose AP equipment Complete networking association process in location；

If it is determined that the working channel of the site apparatus is matched with the working channel of the purpose AP equipment, then according to The MAC Address of purpose AP equipment completes networking association process.

In conjunction with the 5th kind of possible implementation of the third aspect, in the 6th kind of possible implementation of the third aspect In, the first processing module is also used to:

Before the MAC Address and working channel according to the purpose AP equipment, completion networking association process, however, it is determined that institute It states site apparatus and does not receive beacon frame or probing response frame that the purpose AP equipment is sent, then trigger described first and send mould Block sends probe request to the purpose AP equipment；

And first receiving module is also used to receive the probing response frame that the purpose AP equipment is sent, and obtains the spy Survey the parameter information carried in response frame.

In conjunction with the third aspect, the third aspect the first into the 6th kind of possible implementation any one, in third In 7th kind of possible implementation of aspect, the first AP equipment and the 2nd AP equipment are same AP equipment.

Fourth aspect, the embodiment of the present invention provide a kind of Wireless LAN access device, comprising:

Second receiving module, for receiving the enhancing association request message of the first access point AP equipment transmission, the enhancing Association request message carries at least one information in the link quality information of alternative AP equipment and the location information of site apparatus, institute Stating alternative AP equipment is the AP equipment that site apparatus scans, and the enhancing association request message is sent to by the site apparatus The first AP equipment；

Second processing module, for determining according to the received enhancing association request message of second receiving module Purpose AP equipment；

Second sending module, the enhancing associated response report for being generated the Second processing module by the 2nd AP equipment Text is sent to the site apparatus, and the enhancing associated response message carries the medium access control MAC of the purpose AP equipment Address and working channel, so that the site apparatus completes networking association process according to the enhancing associated response message.

In conjunction with fourth aspect, in the first possible implementation of the fourth aspect, the enhancing association request message Also carry:

In conjunction with the first possible implementation of fourth aspect, in second of possible implementation of fourth aspect In, the Second processing module is specifically used for:

According to the attribute information of the link quality information of the alternative AP equipment and operating status and the site apparatus and QoS demand information, the association for obtaining each alternative AP equipment is suitable for angle value, and described be associated with is suitable for that angle value refers to AP equipment and station The associated suitable degree of point device；

The association for determining each alternative AP equipment is suitable for the maximum value in angle value, and the maximum value is corresponding alternative AP equipment AP equipment as a purpose.

In conjunction with second of possible implementation of fourth aspect, in the third possible implementation of fourth aspect In, if the range that redirects is each alternative AP equipment that the enhancing association request message carries, the second processing mould Block determines that it is purpose AP equipment that the suitable maximum AP equipment of angle value is associated in each alternative AP equipment；Alternatively,

If described redirect in each alternative AP equipment and pre-determined distance that range is the enhancing association request message carrying AP equipment, then the Second processing module determines is associated in each alternative AP equipment and the AP equipment in the pre-determined distance The suitable maximum AP equipment of angle value is purpose AP equipment.

In conjunction with fourth aspect, fourth aspect the first to the third possible implementation any one, the 4th In 4th kind of possible implementation of aspect, second sending module is specifically used for:

If the enhancing association request message is what the site apparatus unicast was sent, will by the first AP equipment The enhancing associated response message is sent to the site apparatus；Alternatively,

If the enhancing association request message is the site apparatus broadcast transmission, will by the 2nd AP equipment The enhancing associated response message is sent to the site apparatus, and the 2nd AP equipment is in the enhancing association request message Any AP equipment.

5th aspect, the embodiment of the present invention provide a kind of site apparatus, comprising:

First transmitter, for sending enhancing association request message to the first access point AP equipment, so that the first AP The enhancing association request message is sent to access controller by equipment, and the enhancing association request message carries alternative AP equipment Link quality information and the site apparatus location information at least one information, the alternative AP equipment be the website The AP equipment that equipment scans；

First receiver passes through the enhancing associated response report that the 2nd AP equipment is sent for receiving the access controller Text, the enhancing associated response message include the medium access control MAC Address and working channel of purpose AP equipment；

First processor is connect with first transmitter and first receiver, for being set according to the purpose AP Standby MAC Address and working channel completes networking association process.

In conjunction with the 5th aspect, in the first possible implementation of the 5th aspect, the enhancing association request message Also carry:

In conjunction with the first possible implementation of the 5th aspect or the 5th aspect, second at the 5th aspect is possible In implementation, first receiver is also used to:

Obtain the beacon frame that at least one access controller issues；

If the first processor is also used to determine the access according to the received beacon frame of first receiver Controller has association redirection ability, then triggers first transmitter and send the enhancing association request message to described the One AP equipment.

In conjunction with the first possible implementation of the 5th aspect or the 5th aspect, the third at the 5th aspect is possible In implementation, first receiver is also used to:

Obtain the probing response frame that at least one described access controller issues；

If then the first processor is also used to determine that the access controller has association according to the probing response frame Redirection ability then triggers first transmitter and sends the enhancing association request message to the first AP equipment.

In conjunction with the 5th aspect, the 5th aspect the first into the third possible implementation any one, the 5th In 4th kind of possible implementation of aspect, first transmitter is specifically used for:

In conjunction with the 5th aspect, the 5th aspect the first into the 4th kind of possible implementation any one, the 5th In 5th kind of possible implementation of aspect, the first processor is specifically used for:

If it is determined that the working channel of the site apparatus and the working channel of the purpose AP equipment mismatch, then by its work It is switched to the working channel of the purpose AP equipment as channel, and function Access Gateway is completed according to the MAC Address of the purpose AP equipment Connection process；

In conjunction with the 5th kind of possible implementation of the 5th aspect, in the 6th kind of possible implementation of the 5th aspect In, the first processor is also used to:

Before the MAC Address and working channel according to the purpose AP equipment, completion networking association process, however, it is determined that not Beacon frame or probing response frame that the purpose AP equipment is sent are received, then triggers first transmitter and sends probe requests thereby Frame is to the purpose AP equipment；

And first receiver is also used to receive the probing response frame that the purpose AP equipment is sent, and obtains the detection The parameter information carried in response frame.

In conjunction with the 5th aspect, the 5th aspect the first into the 6th kind of possible implementation any one, the 5th In 7th kind of possible implementation of aspect, the first AP equipment and the 2nd AP equipment are same AP equipment.

6th aspect, the embodiment of the present invention provide a kind of access controller, comprising:

Second receiver, for receiving the enhancing association request message of the first access point AP equipment transmission, the enhancing is closed Connection request message carries at least one information in the link quality information of each alternative AP equipment and the location information of site apparatus, institute Stating alternative AP equipment is the AP equipment that site apparatus scans, and the enhancing association request message is sent to by the site apparatus The first AP equipment；

Second processor, for determining purpose according to the received enhancing association request message of the second receiver AP equipment；

Second transmitter, the enhancing associated response message for being generated the second processor by the 2nd AP equipment are sent out The site apparatus is given, the enhancing associated response message carries the medium access control MAC Address of the purpose AP equipment And working channel, so that the site apparatus completes networking association process according to the enhancing associated response message.

In conjunction with the 6th aspect, in the first possible implementation of the 6th aspect, the enhancing association request message Also carry:

In conjunction with the first possible implementation of the 6th aspect, in second of possible implementation of the 6th aspect In, the second processor is specifically used for:

In conjunction with second of possible implementation of the 6th aspect, in the third possible implementation of the 6th aspect In, if the range that redirects is each alternative AP equipment that the enhancing association request message carries, the second processor Determine that it is purpose AP equipment that the suitable maximum AP equipment of angle value is associated in each alternative AP equipment；Alternatively,

If described redirect in each alternative AP equipment and pre-determined distance that range is the enhancing association request message carrying AP equipment, then the second processor determine be associated in each alternative AP equipment and the AP equipment in the pre-determined distance it is suitable The suitable maximum AP equipment of angle value is purpose AP equipment.

In conjunction with the 6th aspect, the 6th aspect the first into the third possible implementation any one, the 6th In 4th kind of possible implementation of aspect, second transmitter is specifically used for:

The embodiment of the present invention, by the mutual message of site apparatus and access controller, increasing redirection information member Plain (AREQ-REDIRECT and ARSP-REDIRECT), the association redirection mechanism during the networking of support site equipment, so that The network state information of itself comprehensive side of access controller and site apparatus side, determines the final associated AP equipment of site apparatus, So as to improve access controller unilaterally determine AP equipment when because to the network information understand it is limited caused by non-dominance, guarantee AP it is close Collect under deployment conditions, site apparatus preferentially networks.

Detailed description of the invention

In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of invention without any creative labor, may be used also for those of ordinary skill in the art To obtain other drawings based on these drawings.

Fig. 1 is the flow chart of wireless local area network access method embodiment one of the present invention；

Fig. 2 is the format sample figure of association request message in the prior art；

Fig. 3 is the exemplary diagram of one application scenarios of wireless local area network access method embodiment of the present invention；

Fig. 4 is the format sample figure of E-ARSP message in wireless local area network access method embodiment one of the present invention；

Fig. 5 is the flow chart of wireless local area network access method embodiment two of the present invention；

Fig. 6 is the format sample figure of E-AREQ message in wireless local area network access method embodiment two of the present invention；

Fig. 7 is the flow chart of wireless local area network access method embodiment three of the present invention；

Fig. 8 is the structural schematic diagram of Wireless LAN access device embodiment one of the present invention；

Fig. 9 is the structural schematic diagram of Wireless LAN access device embodiment two of the present invention；

Figure 10 is the structural schematic diagram of site apparatus embodiment one of the present invention；

Figure 11 is the structural schematic diagram of access controller embodiment one of the present invention.

Specific embodiment

Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.

For managed concentratedly using access controller adopting wireless fidelity technology (Wireless Fidelity, referred to as: Wi-Fi) network, " thin AP+AC " framework are a kind of common network architecture and the applicable network architecture of the embodiment of the present invention. Under this network architecture, access controller has the inquiry and capacity gauge to AP equipment real-time running state is had under its command, can Acquisition has the networks real time status informations such as loading condition and the access delay of each AP equipment under its command.Also, what access controller had under its command AP equipment is to place of medium access control (Media Access Control, referred to as: MAC) the management message even to control message Reason can all be transferred to concentrate on access controller and complete.

Fig. 1 is the flow chart of wireless local area network access method embodiment one of the present invention.The embodiment of the present invention provides a kind of nothing Line local area network access method, this method can be executed by site apparatus, which can be smart phone, tablet computer Or the terminal devices such as palmtop computer.As shown in Figure 1, the method for the present embodiment includes:

S101, site apparatus send enhancing association request message to the first AP equipment, so that the first AP equipment will enhance Association request message is sent to access controller, the enhancing association request message carry alternative AP equipment link quality information and At least one information in the location information of the site apparatus, alternative AP equipment are the AP equipment that the site apparatus scans.

In the inventive embodiments, enhancing association request (Enhanced Association Request, referred to as: E-AREQ) Message carries at least one information in the link quality information of each alternative AP equipment and the location information of pre- networking site apparatus, i.e., The link quality information of each alternative AP equipment and both location informations of the site apparatus can carry simultaneously in E-AREQ message, Or in which a carrying is in increasing E-AREQ message.

In the IEEE 802.11 standards, it for the ease of the various information in MAC layer management frame, devises based on information word The information-organization style of element (Information Element, referred to as: IE), format are as shown in Figure 2.Wherein, component identification (Element Identity, referred to as: Element ID) is the identity of unique identification information element；Length (Length) is The physical length of the information element content and information (Information) field；Information (Information) is information element Content, the field are variable.

By taking association request (Association Request, referred to as: AREQ) message in IEEE802.11 standard as an example, Include extended service set identification (Extended Service Set Identity, referred to as: SSID) and supporting rate in message Information elements such as (Supported Rates).Wherein, SSID be used to indicate site apparatus will associated extended service set, branch Hold the traffic rate set that rate is used to indicate site apparatus support.In the embodiment of the present invention, in above-mentioned association request message Increase and redirect (AREQ-REDIRECT) information element, such as the link quality information and/or the website of above-mentioned each alternative AP equipment The location information of equipment.

During concrete implementation, the site apparatus that preparation networks carries out networking scanning by IEEE802.11 normal process And verification process.But when being associated with the AP equipment selected, E-AREQ message provided by the invention is used.E-AREQ report Text includes the content that association request message includes in the prior art, is also provided comprising site apparatus according to itself scanning observed result Each alternative AP equipment link quality information.

Wherein, link-quality assessed value is a kind of specifying information form of link quality information.Site apparatus passes through networking When scanning process (active scan or drive sweep), obtain the link-quality assessed value of its periphery AP equipment.Specifically, website is set The standby average arriving signal intensity by obtaining the message from each AP equipment in periphery received in scanning process, this is averaged Arriving signal intensity is as site apparatus to the link-quality assessed value of each AP equipment.

E-AREQ message is sent to the first AP equipment by site apparatus, so that the first AP equipment is by its received E-AREQ Message is sent to access controller.Access controller generates enhancing associated response (Enhanced according to the E-AREQ message Association Response, referred to as: E-ARSP) message, and the E-ARSP message is sent to above-mentioned by the 2nd AP equipment Site apparatus.

As shown in figure 3, site apparatus 10 is in multiple first AP equipment, 20 working ranges, multiple first AP equipment 20 It is administered by access controller 30.Wherein, site apparatus 10 can choose multiple first AP equipment by the way of unicast transmission Wherein any one intermediary forwarded as above-mentioned E-AREQ message in 20；In addition, site apparatus 10 can also be using broadcast The mode of transmission, multiple first AP equipment 20 can be used as the intermediary of above-mentioned E-AREQ message forwarding.

S102, site apparatus receive access controller and pass through the E-ARSP message that the 2nd AP equipment is sent, E-ARSP report Text includes the MAC Address and working channel of purpose AP equipment.

Referring to the analysis of S101 it is found that E-ARSP message is access controller according to E-AREQ message generation.Here The 2nd AP equipment can be one in multiple first AP equipment 10 as shown in Figure 3, be also possible to be different from the first AP to set Standby, other AP equipment that access controller has under its command are not limited herein.

In the IEEE 802.11 standards, the MAC Address of AP equipment also creates basic service set as the AP equipment simultaneously The identification information (BSSID) of (Basic Service Set, referred to as: BSS).Access controller it is comprehensive its to having each AP under its command The decision assistant for including in the grasp of equipment real time execution situation, and the E-AREQ message of the associated site apparatus transmission of request Information, for example, link quality information, selectes final access AP equipment of the purpose AP equipment as the associated site apparatus of request, Purpose AP equipment is the AP equipment redirected.

In the IEEE 802.11 standards, allow AP equipment when establishing network, select one from multiple available work channels It is a to be used as its working channel.Site apparatus is only in identical working channel with purpose AP equipment, can be just in communication with each other.

Therefore, increase in existing associated response (Association Response, referred to as: ARSP) message and redirect letter It ceases element (ARSP-REDIRECT), i.e. the MAC Address and working channel of purpose AP equipment, networked for support site equipment Association redirection mechanism in journey.

Access controller according to E-AREQ message, in the E-ARSP message of generation include purpose AP equipment MAC Address and Working channel.For example, message format as shown in Figure 4 can be used in E-ARSP message.

S103, site apparatus complete networking association process according to the MAC Address and working channel of purpose AP equipment.

Specifically, after site apparatus receives E-ARSP message, the MAC Address and working channel of purpose AP equipment are extracted.It stands Point device compares the working channel of its own and the working channel of above-mentioned purpose AP equipment, if the two working channel is different It causes, then switches the working channel that its own working channel is purpose AP, the association that networks then is completed according to the MAC Address of purpose AP Process；If the two working channel is consistent, networking association process is completed according to the MAC Address of purpose AP.

Fig. 5 is the flow chart of wireless local area network access method embodiment two of the present invention.The embodiment of the present invention provides a kind of nothing Line local area network access method, this method can be executed by access controller.As shown in figure 5, the method for the present embodiment includes:

S501, access controller receive the E-AREQ message that the first AP equipment is sent, which carries alternative AP At least one information in the link quality information of equipment and the location information of site apparatus, alternative AP equipment are site apparatus scanning The AP equipment arrived, the E-AREQ message are sent to above-mentioned first AP equipment by site apparatus.

The step is corresponding with S101 to be executed, and after site apparatus executes S101, access controller executes this step, completes E- The interaction of AREQ message, details are not described herein again.

S502, access controller determine purpose AP equipment according to E-AREQ message.

Access controller equipment complex its to having each AP equipment real time execution situation (network load condition and access delay under its command Deng) grasp and E-AREQ in include information to aid in decision select for example, the link quality information of each alternative AP equipment Final access AP equipment of the purpose AP equipment as the site apparatus that will network.

Access controller generates E-ARSP message according to purpose AP equipment, which carries purpose AP equipment MAC Address and working channel.Specifically, the information that the AP equipment that it has under its command has been stored in access controller, for example, MAC Address It is information with working channel etc..Therefore, after access controller determines purpose AP equipment, according to the MAC of purpose AP equipment Location and working channel generate E-ARSP message.The format of the E-ARSP message can be as shown in Figure 4.

E-ARSP message is sent to site apparatus by the 2nd AP equipment by S503, access controller, so that site apparatus Networking association process is completed according to the E-ARSP message.

Specifically, access controller selects an AP equipment, i.e. the 2nd AP equipment in the AP equipment that it has under its command, is used for E- ARSP message is transmitted to the site apparatus for initiating association request, so that the site apparatus is completed into network process.It should be noted that this In the 2nd AP equipment can with the first AP equipment be the same AP equipment, may also be distinct from that above-mentioned first AP equipment, herein It is not limited.

The embodiment of the present invention is by increasing redirection information element in the mutual message of site apparatus and access controller (AREQ-REDIRECT and ARSP-REDIRECT), the association redirection mechanism during the networking of support site equipment, so that visiting The network state information for asking controller synthesis itself side and site apparatus side determines the final associated AP equipment of site apparatus, from And improve access controller unilaterally determine AP equipment when because to the network information understand it is limited caused by non-dominance, guarantee AP it is intensive Under deployment conditions, site apparatus preferentially networks.

In the above-described embodiments, E-AREQ message can also carry one kind or any combination thereof in following information: website is set Standby service quality (Quality of Service, referred to as: QoS) demand information and redirection range, the redirection range are used The range of the purpose AP equipment is determined in instruction.Then redirection information element can also be the QoS demand of site apparatus.

Wherein, the QoS demand information of site apparatus may include site apparatus to traffic rate after networking and transmission delay etc. The requirement of communication quality parameter；Site apparatus location information is the location information of site apparatus itself.

Fig. 6 is the format sample figure of E-AREQ message in wireless local area network access method embodiment two of the present invention.Such as Fig. 6 institute Show, E-AREQ message includes component identification, length and information, wherein information includes control (Ctrl) field and information element word Section, information element field includes the link quality information, the QoS demand information of site apparatus and site apparatus of each alternative AP equipment Location information.

Wherein, control field indicates following information by the position (bit) of different location:

The link quality information indicating bit of each alternative AP equipment indicates whether the information word by " 0 " or " 1 " value Element；

The QoS demand information indicating bit of site apparatus indicates whether the information element by " 0 " or " 1 " value；

The location information indicating bit of site apparatus indicates whether the information element by " 0 " or " 1 " value；

Range indicating bit is redirected, " 0 " value indicates access controller when determining the AP equipment redirected, from each alternative AP It is selected in the AP equipment occurred in the link quality information of equipment；" 1 " value indicates that access controller is set in the determining AP redirected When standby, allow access controller according to the information (location information of such as site apparatus) in E-AREQ message and under itself grasping The real time position and running state information for having jurisdiction over AP equipment, except each alternative AP equipment for including in E-AREQ message, from having under its command AP equipment in selection redirect AP.Such as when the AP equipment that access controller has under its command is there are when dynamic dormancy or wakeup schedule, Site apparatus can not find the suspend mode AP equipment on its periphery by scanning process, but access controller can be according to site apparatus Location information and local management information determine the suspend mode AP equipment on site apparatus periphery, and may be selected suspend mode AP device activation. In the present embodiment, if redirecting range indicating bit value is " 1 ", access controller determines that the range of purpose AP equipment is bigger, So as to select more preferably AP equipment as redirect AP equipment.

It should be noted that access controller has association redirection ability in any embodiment of that present invention.Specifically Ground, when generating beacon frame or probing response frame for the AP equipment that has under its command, (two kinds of frames are respectively used to site apparatus to access controller Drive sweep and active scan during networking, contained content is essentially identical, all contains the domain performance (Capability)), by frame The association that a reserved place (bit) in the interior domain Capability is used as access controller redirects ability indicating bit.Access control The beacon frame or probing response frame that device processed is generated are issued to AP equipment, and are responsible for broadcasting (beacon frame) or single by the AP equipment Broadcast the site apparatus of (probing response frame) to scanning.

Below by way of site apparatus, the interaction of AP equipment and access controller, illustrate provided in an embodiment of the present invention wireless Local area network access method.

Fig. 7 is the flow chart of wireless local area network access method embodiment three of the present invention.For simplicity, in the embodiment, second AP equipment and the first AP equipment are the same AP equipment, and purpose AP equipment is different from the first AP equipment, and access controller has pass Join redirection ability.As shown in fig. 7, in the embodiment of the present invention, wireless local area network access method includes:

S701, site apparatus obtain the beacon frame that at least one access controller issues.

Site apparatus gets the beacon frame that at least one access controller issues by any AP equipment, if the website is set For according to beacon frame, determines that above-mentioned access controller has association redirection ability, then execute S702；Otherwise, site apparatus is pressed Enter network process networking specified in current IEEE802.11 standard.

Optionally, which can also obtain the probing response frame that at least one access controller issues for site apparatus. At this point, it will be appreciated by those skilled in the art that the site apparatus is set by the AP on its periphery of broadcast probe request frame active scan It is standby, and after the AP equipment on periphery receives the probing response frame, which is transmitted to the access for administering the AP equipment Controller processing, access controller generates the corresponding probing response frame of the probe request, and is sent to by above-mentioned AP equipment Initiate the site apparatus of request.

If site apparatus according to above-mentioned probing response frame, determines that above-mentioned access controller has association redirection ability, then Execute S702；Otherwise, site apparatus networks by network process is entered specified in current IEEE802.11 standard.

S702, site apparatus send E-AREQ message to the first AP equipment.

The site apparatus that preparation networks is collected into the transmission of periphery AP equipment by drive sweep or active scan mechanism After beacon frame or probing response frame, E-AREQ message is generated and sent to the first AP equipment.

Wherein, the opportunity that site apparatus generates E-AREQ message can be following two:

Mode one: site apparatus is completed to scan and authenticated by network process is entered specified in current IEEE802.11 standard Journey.In association phase, site apparatus can determine the link-quality assessed value of each alternative AP equipment, generate the link of alternative AP equipment Quality information simultaneously carries in the AREQ-REDIRECT information element of E-AREQ message；Site apparatus may further determine that whether The location information of QoS demand information and site apparatus in AREQ-REDIRECT information element comprising site apparatus, thus more sharp Light load is determined and to the preferable AP equipment of the radio link quality of networking site apparatus as redirection in access controller AP equipment.

After site apparatus employing mode one generates E-AREQ message, an AP can be randomly choosed from each alternative AP equipment The best AP equipment of link-quality also may be selected as mesh as intended recipient and forwarding AP equipment, i.e. the first AP equipment in equipment Tag splice is received and forwarding AP equipment, is not limited herein.

Mode two: site apparatus is after the beacon frame or probing response frame for receiving the transmission of an AP equipment, i.e., by being somebody's turn to do AP equipment starts verification process, and sends E-AREQ message after the authentication has been successful.

In mode two, in the link quality information for each alternative AP equipment that AREQ-REDIRECT information element includes only Link quality information containing an alternative AP equipment, i.e. the link-quality assessed value of site apparatus and the AP equipment room.Optionally, Site apparatus can determine QoS demand information and site apparatus in AREQ-REDIRECT information element comprising site apparatus Location information, thus more conducively access controller determine light load and to networking site apparatus radio link quality it is preferable AP equipment is as redirection AP equipment.

In mode two, site apparatus can send E-AREQ message using broadcast or mode of unicast.

In a kind of specific implementation scene, site apparatus broadcast transmission E-AREQ message gives the first AP equipment, so that the first AP Equipment evaluation site apparatus to the first AP equipment link quality information, and by the link quality information of the first AP equipment add Into E-AREQ message, it is forwarded to access controller.

Specifically, when site apparatus uses broadcast transmission E-AREQ message, site apparatus periphery and site apparatus are the same as work Multiple AP equipment of channel obtain the E-AREQ message.Receive the AP equipment of E-AREQ message, assessment site apparatus to itself Link-quality, and the link quality information for each alternative AP equipment link quality information being added in E-AREQ message In, the MAC Address of E-AREQ message and AP equipment itself is then transmitted to the access controller for administering these AP equipment.Access Controller filters multiple forwarding copies of same E-AREQ message, wherein each copy includes different each alternative AP equipment Link quality information, the link quality information of merging site apparatus to each AP equipment, each alternative AP equipment after being summarized Link quality information.

In another kind specific implementation scene, site apparatus unicast sends E-AREQ message to the first AP equipment, so that first E-AREQ message is forwarded to access controller by AP equipment.

Specifically, when site apparatus sends E-AREQ message using unicast, site apparatus periphery and site apparatus are the same as work One AP equipment of channel obtains the E-AREQ message.The AP equipment by the E-AREQ message received be forwarded to administer the AP set Standby access controller, the link matter for each alternative AP equipment that AREQ-REDIRECT information element includes in the E-AREQ message Measure the link quality information in information containing only an alternative AP equipment.In this case, AREQ- in E-AREQ message REDIRECT information element also includes the location information of site apparatus, the AP being had under its command so as to access controller equipment according to its own The location information of device distribution location information and the site apparatus, preferably suitable AP equipment is as redirection AP equipment.

Mode two helps avoid site apparatus and expends the excessive time in networking scan phase, so that entering of setting up an office of website Network process is rapidly completed.

E-AREQ message is sent to access controller by S703, the first AP equipment.

S704, access controller determine purpose AP equipment according to E-AREQ message.

Specifically, in alternative AP equipment, according to the priority of those alternative AP equipment, purpose AP equipment is determined.Wherein, The mode for obtaining the priority of alternative AP equipment can be accomplished in several ways, such as access controller is according to alternative AP equipment The attribute information and QoS demand information of link quality information and operating status and site apparatus obtain the pass of each alternative AP equipment Joining is suitable for angle value；And determine that the association of each alternative AP equipment is suitable for the maximum value in angle value, and the maximum value is corresponding alternative AP equipment AP equipment as a purpose.Wherein, described be associated with is suitable for that angle value refers to AP equipment and the associated suitable degree of site apparatus, Whether the network quality that the site apparatus that will network accesses after alternative AP equipment meets network demand.

When the value that E-AREQ message carries the location information of site apparatus, and redirects range indicating bit is " 1 ", so as to Access controller expands alternative AP equipment according to the location information of site apparatus and its each position AP grasped in advance.Access control Device can by each alternative AP equipment between site apparatus at a distance from by default mapping relations be mapped to link-quality, for example, according to In advance measurement empirical value establish the mapping table between distance and link-quality, it is generally the case that between AP equipment and site apparatus away from From closer, link-quality is better.

The operating status of alternative AP equipment includes the network load (BSS Load) of alternative AP equipment, the support of alternative AP equipment Communication rate set (supported rates), the information such as alternative AP equipment QoS ability (QoS Capability), specifically may be used Including some or all of beacon frame institute containing parameter in IEEE802.11 standard.

The attribute information of site apparatus includes the information such as communication rate set, QoS ability that site apparatus is supported, can specifically be wrapped Include some or all of association request frame institute containing parameter in IEEE802.11 standard.

The QoS demand information of site apparatus includes logical to average communication rate, average and maximum access delay etc. after networking The requirement for believing quality specifically may include institute's containing parameter in business traffic specification (TSPEC) information element in IEEE802.11 standard Partly or entirely.

S705, access controller generate E-ARSP message, which carries purpose AP and set according to purpose AP equipment Standby MAC Address and working channel.

The same S503 of the step, details are not described herein again.

E-ARSP message is sent to the first AP equipment by S706, access controller, so that the first AP equipment reports E-ARSP Text is sent to site apparatus.

Optionally, E-ARSP message can be sent to the first AP equipment by following two mode by access controller.

Mode one: if E-AREQ message is what site apparatus unicast was sent, access controller sends E-ARSP message To the first AP equipment, so that E-ARSP message is sent to site apparatus by the first AP equipment.

Mode two: if E-AREQ message is site apparatus broadcast transmission, access controller sends E-ARSP message To the 2nd AP equipment, the 2nd AP equipment is any AP equipment in E-AREQ message.

S707, the first AP equipment send E-ARSP message to site apparatus.

Wherein, the MAC Address and working channel of purpose AP equipment are carried in E-ARSP message.Site apparatus is above-mentioned in reception After E-ARSP message, however, it is determined that the beacon frame or probing response frame for not receiving the transmission of purpose AP equipment then execute S708- S710；Otherwise, S710 is directly executed.

S708, site apparatus send probe request to purpose AP equipment.

The step carries out parameter synchronization for site apparatus and purpose AP equipment, and S709 is shown in detailed description.

S709, site apparatus receive the probing response frame that purpose AP equipment is sent, and obtain and carry in the probing response frame Parameter information.

Wherein, probing response frame is a kind of MAC layer management frame defined in IEEE802.11 standard, is networked in site apparatus When Shi Caiyong active scan mechanism, a probe request is broadcasted first, receives the AP equipment of the probe request to the station Point device feeds back a probing response frame, which includes the operating parameter information of the established network of AP equipment, example As beacon period, the length for colliding idling cycle (Collision Free Period), traffic indication information and AP equipment are supported Communication rate set etc..These information must be obtained ahead of time in site apparatus, just can ensure that the operation after network is added meets network rule It is fixed, the activity of equipment other in network is not interfered.

Wherein, S708 and S709 is optional step, if the site apparatus is in the probing response frame or beacon initially received In frame, there are purpose AP device forwards, does not then execute S708 and S709, i.e. after S707, directly execution S710.

S710, site apparatus complete networking association process according to the MAC Address and working channel of purpose AP equipment.

Specifically, if site apparatus determines that the working channel of its own and the working channel of purpose AP equipment mismatch, Its working channel is switched to the working channel of purpose AP equipment by site apparatus, and is completed according to the MAC Address of purpose AP equipment Networking association process；If site apparatus determines that the working channel of its own is matched with the working channel of purpose AP equipment, basis The MAC Address of purpose AP equipment completes networking association process.

In the above-described embodiments, if redirecting range is the alternative AP equipment that E-AREQ message carries, access controller Determine that it is purpose AP equipment that the suitable maximum AP equipment of angle value is associated in alternative AP equipment；Alternatively, if redirecting range is E- The AP equipment in alternative AP equipment and pre-determined distance that AREQ message carries, then access controller determines alternative AP equipment and presets It is purpose AP equipment that the suitable maximum AP equipment of angle value is associated in AP equipment in distance.

Specifically, if the redirection range of Ctrl field indicates in the AREQ-REDIRECT information element of E-AREQ message The value of position is " 0 ", then alternative AP equipment is the AP equipment that link quality information includes in E-AREQ message；Otherwise, access control Device, will be apart from site apparatus pre-set radius range according to the location information of the site apparatus in AREQ-REDIRECT information element The AP equipment for including in interior AP equipment (including suspend mode AP equipment), and the link quality information of alternative AP equipment, as standby Select AP equipment.

In the embodiment of the present invention, many-sided letter such as its own comprehensive network real time execution situation grasped of access controller The QoS demand information of the scanning observed result and site apparatus of breath and site apparatus, determines purpose AP equipment, makes to initiate to close The site apparatus of connection request carries out networking access, effectively avoids access controller when unilaterally determining purpose AP equipment because to network Non- dominance caused by information understanding is limited realizes the optimum choice of purpose AP equipment, guarantees the internetworking after site apparatus networks It can be more excellent；In addition, site apparatus can initiate association request process when scanning is to an AP equipment, to accelerate site apparatus Enter network process.

It should be noted that wireless network access method provided in an embodiment of the present invention can make that association is supported to redirect AP equipment with do not support to be associated with the same network of AP coexistence redirected so that network has forward compatibility ability.

Fig. 8 is the structural schematic diagram of Wireless LAN access device embodiment one of the present invention.The device, which can integrate, is standing In point device, which can be the terminal devices such as smart phone, tablet computer or palmtop computer.The device can lead to It crosses or mode that software or hardware or software and hardware combine is realized.As shown in figure 8, in the embodiment of the present invention, wireless office Domain net access device includes the first sending module 81, the first receiving module 82 and first processing module 83.

Wherein, the first sending module 81 is for sending enhancing association request message to the first AP equipment, so that described first The enhancing association request message is sent to access controller by AP equipment, and the enhancing association request message carries alternative AP and sets At least one information in the location information of standby link quality information and site apparatus, the alternative AP equipment are that the website is set The standby AP equipment scanned；First receiving module 82 is used to receive the access controller and passes through the described of the 2nd AP equipment transmission Enhance associated response message, the enhancing associated response message includes the MAC Address and working channel of purpose AP equipment；At first Module 83 is managed for the MAC Address and working channel according to the purpose AP equipment, completes networking association process.

The device of the present embodiment can be used for executing the technical solution of embodiment of the method shown in Fig. 1, realization principle and skill Art effect is similar, and details are not described herein again.

In the above-described embodiments, the enhancing association request message can also carry: the QoS demand letter of the site apparatus Breath and/or redirection range, the range that redirects are used to indicate the range for determining the purpose AP equipment.

Optionally, the first receiving module 82 can be also used for obtaining the beacon frame that at least one access controller issues；Then If first processing module 83 can be also used for the beacon frame obtained according to the first receiving module 82, the access control is determined Device has association redirection ability, then triggers the first sending module 81 and send enhancing association request message to the first AP equipment.

Optionally, the first receiving module 82 can be also used for obtaining the detection sound that at least one described access controller issues Answer frame；If then first processing module 83 can be also used for the probing response frame obtained according to the first receiving module 82, determine The access controller has association redirection ability, then triggers the first sending module 81 and send enhancing association request message to the One AP equipment.

Further, the first sending module 81 can be specifically used for: enhancing association request message is to institute described in broadcast transmission The first AP equipment is stated, so that link quality information of the site apparatus described in the first AP equipment evaluation to the first AP equipment, And the link quality information of the first AP equipment is added in the enhancing association request message, it is forwarded to the access control Device processed；Alternatively, unicast sends the enhancing association request message to the first AP equipment, so that the first AP equipment is by institute It states enhancing association request message and is forwarded to the access controller.

On the basis of the above, first processing module 83 can be specifically used for: if it is determined that the working channel of the site apparatus with The working channel of the purpose AP equipment mismatches, then the working channel of the site apparatus is switched to the purpose AP equipment Working channel, and according to the MAC Address of the purpose AP equipment complete networking association process；If it is determined that the site apparatus Working channel is matched with the working channel of the purpose AP equipment, then completes to network according to the MAC Address of the purpose AP equipment Association process.

In the above-described embodiments, first processing module 83 can be also used for: in the MAC Address according to the purpose AP equipment And working channel, before completing networking association process, however, it is determined that the site apparatus does not receive the purpose AP equipment and sends Beacon frame or probing response frame, then trigger the first sending module 81 and send probe request to the purpose AP equipment；And the One receiving module 82 can be also used for receiving the probing response frame that the purpose AP equipment is sent, and obtain in the probing response frame The parameter information of carrying.

In any embodiment of the present invention, the first AP equipment and the 2nd AP equipment can be same AP equipment, It may be different AP equipment.

Fig. 9 is the structural schematic diagram of Wireless LAN access device embodiment two of the present invention.The device, which can integrate, is visiting Ask in controller, the device can by or the mode that combines of software or hardware or software and hardware realize.Such as Fig. 9 institute Show, in the embodiment of the present invention, Wireless LAN access device includes the second receiving module 91, Second processing module 92 and the second hair Send module 93.

Second receiving module 91 is used to receive the enhancing association request message of the first AP equipment transmission, and the enhancing association is asked Message is asked to carry at least one information in the link quality information of each alternative AP equipment and the location information of site apparatus, it is described standby Selecting AP equipment is the AP equipment that site apparatus scans, and the enhancing association request message is sent to described by the site apparatus First AP equipment；Second processing module 92 is used for according to the received enhancing association request message of the second receiving module 91, really Determine purpose AP equipment；Second sending module 93 is used to close by the enhancing that the 2nd AP equipment generates Second processing module 92 Connection response message is sent to the site apparatus, and the enhancing associated response message carries the medium access of the purpose AP equipment MAC Address and working channel are controlled, was associated with so that the site apparatus is completed to network according to the enhancing associated response message Journey.

The device of the present embodiment can be used for executing the technical solution of embodiment of the method shown in Fig. 5, realization principle and skill Art effect is similar, and details are not described herein again.

In the above-described embodiments, the enhancing association request message can also carry: the QoS demand of the site apparatus And/or range is redirected, the range that redirects is used to indicate the range for determining the purpose AP equipment.

Further, Second processing module 92 can be specifically used for: according to the link quality information of the alternative AP equipment And the attribute information and QoS demand information of operating status and the site apparatus, the association for obtaining each alternative AP equipment are suitable Suitable angle value, described be associated with is suitable for that angle value refers to AP equipment and the associated suitable degree of site apparatus；Determine that each alternative AP is set Standby association is suitable for the maximum value in angle value, and by the corresponding alternative AP equipment of maximum value AP equipment as a purpose.

Optionally, if the range that redirects is each alternative AP equipment that the enhancing association request message carries, the Two processing modules 92 determine that it is purpose AP equipment that the suitable maximum AP equipment of angle value is associated in each alternative AP equipment；Alternatively, If the AP equipment redirected in each alternative AP equipment and pre-determined distance that range is the enhancing association request message carrying, Then Second processing module 92, which determines, is associated with suitable angle value most in each alternative AP equipment and the AP equipment in the pre-determined distance Big AP equipment is purpose AP equipment.

On the basis of the above, the second sending module 93 can be specifically used for: if the enhancing association request message is the station What point device unicast was sent, then the enhancing associated response message is sent to by the website by the first AP equipment and set It is standby；Alternatively, if the enhancing association request message is the site apparatus broadcast transmission, it will by the 2nd AP equipment The enhancing associated response message is sent to the site apparatus, and the 2nd AP equipment is in the enhancing association request message Any AP equipment.

Figure 10 is the structural schematic diagram of site apparatus embodiment one of the present invention.As shown in Figure 10, it in the embodiment of the present invention, stands Point device include the first transmitter 100, the first receiver 200 and connect with the first transmitter 100 and the first receiver 200 One processor 300.

Wherein, the first transmitter 100 is for sending enhancing association request message to the first AP equipment, so that the first AP The enhancing association request message is sent to access controller by equipment, and the enhancing association request message carries alternative AP equipment Link quality information and the site apparatus location information at least one information, the alternative AP equipment be the website The AP equipment that equipment scans；First receiver 200 is used to receive the access controller and passes through the increasing that the 2nd AP equipment is sent Strong associated response message, the enhancing associated response message include the MAC Address and working channel of purpose AP equipment；First processing Device 300 is used for MAC Address and working channel according to the purpose AP equipment, completes networking association process.

The site apparatus of the present embodiment can be used for executing the technical solution of embodiment of the method shown in Fig. 1, realization principle Similar with technical effect, details are not described herein again.

Optionally, the first receiver 200 can be also used for: obtain the beacon frame that at least one access controller issues；This When, if first processor 300 can be also used for determining the access control according to the received beacon frame of the first receiver 200 Device processed has association redirection ability, then triggers the first transmitter 100 and send enhancing association request message to the first AP equipment.

Optionally, the first receiver 200 can be also used for: obtaining the detection that at least one described access controller issues and rings Answer frame；At this point, if first processor 300 can be also used for determining that the access controller has according to the probing response frame It is associated with redirection ability, then triggers the first transmitter 100 and sends enhancing association request message to the first AP equipment.

On the basis of the above, the first transmitter 100 can be specifically used for: described in broadcast transmission enhancing association request message to The first AP equipment, so that the link-quality of site apparatus described in the first AP equipment evaluation to the first AP equipment is believed Breath, and the link quality information of the first AP equipment is added in the enhancing association request message, it is forwarded to the visit Ask controller；Alternatively, unicast sends the enhancing association request message to the first AP equipment, so that the first AP equipment The enhancing association request message is forwarded to the access controller.

Further, first processor 300 can be specifically used for: if it is determined that the working channel of the site apparatus and the mesh The working channel of AP equipment mismatch, then its working channel is switched to the working channel of the purpose AP equipment, and according to The MAC Address of the purpose AP equipment completes networking association process；If it is determined that the working channel of the site apparatus and the mesh AP equipment working channel matching, then according to the MAC Address of the purpose AP equipment complete networking association process.

Further, first processor 300 can be also used for: in the MAC Address and work according to the purpose AP equipment Make channel, before completing networking association process, however, it is determined that do not receive beacon frame that the purpose AP equipment is sent or detection is rung Frame is answered, then triggers the first transmitter 100 and sends probe request to the purpose AP equipment；And first receiver 200 can be with The probing response frame sent for receiving the purpose AP equipment, obtains the parameter information carried in the probing response frame.

Figure 11 is the structural schematic diagram of access controller embodiment one of the present invention.As shown in figure 11, in the embodiment of the present invention, Access controller includes second receiver 400, the second transmitter 500 and connect with second receiver 400 and the second transmitter 500 Second processor 600.

Wherein, second receiver 400 is used to receive the enhancing association request message of the first AP equipment transmission, and the enhancing is closed Connection request message carries at least one information in the link quality information of alternative AP equipment and the location information of site apparatus, described Alternative AP equipment is the AP equipment that site apparatus scans, and the enhancing association request message is sent to institute by the site apparatus State the first AP equipment；Second processor 600 is used for according to the received enhancing association request message of second receiver 400, really Determine purpose AP equipment；Second transmitter 500 is used for the enhancing associated response for generating second processor 600 by the 2nd AP equipment Message is sent to the site apparatus, and the enhancing associated response message carries the medium access control of the purpose AP equipment MAC Address and working channel, so that the site apparatus completes networking association process according to the enhancing associated response message.

The access controller of the present embodiment can be used for executing the technical solution of embodiment of the method shown in Fig. 5, realize former Reason is similar with technical effect, and details are not described herein again.

In the above-described embodiments, second processor 600 can be specifically used for: be believed according to the link-quality of the alternative AP equipment The attribute information and QoS demand information of breath and operating status and the site apparatus obtain the association of each alternative AP equipment It is suitable for angle value, described be associated with is suitable for that angle value refers to AP equipment and the associated suitable degree of site apparatus；Determine each alternative AP The association of equipment is suitable for the maximum value in angle value, and by the corresponding alternative AP equipment of maximum value AP equipment as a purpose.

Optionally, if the range that redirects is each alternative AP equipment that the enhancing association request message carries, the Two processors 600 determine that it is purpose AP equipment that the suitable maximum AP equipment of angle value is associated in each alternative AP equipment；Alternatively, if The AP equipment redirected in each alternative AP equipment and pre-determined distance that range is the enhancing association request message carrying, then Second processor 600 determines that being associated in each alternative AP equipment and the AP equipment in the pre-determined distance is suitable for that angle value is maximum AP equipment is purpose AP equipment.

Further, the second transmitter 500 can be specifically used for: if the enhancing association request message is the site apparatus What unicast was sent, then the enhancing associated response message is sent to by the site apparatus by the first AP equipment；Alternatively, If the enhancing association request message is the site apparatus broadcast transmission, by the 2nd AP equipment by the enhancing Associated response message is sent to the site apparatus, and the 2nd AP equipment is that any AP is set in the enhancing association request message It is standby.

It should be noted that in any embodiment of that present invention, receiver (the first receiver and second receiver) and hair It send device (the first transmitter and the second transmitter) that can be independent from each other, is also possible to integral structure, i.e. transceiver, receive and dispatch Device integrates the function and effect of above-mentioned receiver and transmitter.Wherein, first transceiver includes that the first receiver and first send Device, second transceiver include second receiver and the second transmitter.

Those of ordinary skill in the art will appreciate that: realize that all or part of the steps of above-mentioned each method embodiment can lead to The relevant hardware of program instruction is crossed to complete.Program above-mentioned can be stored in a computer readable storage medium.The journey When being executed, execution includes the steps that above-mentioned each method embodiment to sequence；And storage medium above-mentioned include: ROM, RAM, magnetic disk or The various media that can store program code such as person's CD.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution The range of scheme.

Claims

1. a kind of wireless local area network access method characterized by comprising

Site apparatus sends enhancing association request message to the first access point AP equipment, so that the first AP equipment is by the increasing Strong association request message is sent to access controller, and the enhancing association request message carries the link-quality letter of alternative AP equipment At least one information in the location information of breath and the site apparatus, the alternative AP equipment site apparatus scanning are arrived AP equipment, wherein the enhancing association request message also carries: the service quality QoS demand information of the site apparatus and/or Redirect range, the range for redirecting range and being used to indicate determining purpose AP equipment；

The site apparatus receives the access controller and passes through the enhancing associated response message that the 2nd AP equipment is sent, the increasing Strong associated response message includes the medium access control MAC Address and working channel of purpose AP equipment；

2. the method according to claim 1, wherein the site apparatus sends enhancing association request message to the Before one AP equipment, the method also includes:

The site apparatus obtains the beacon frame that at least one access controller issues, if according to the beacon frame, described in determination Access controller has association redirection ability, then sends enhancing association request message to the first AP equipment；Alternatively,

The site apparatus obtains the probing response frame that at least one described access controller issues, if according to the probe response Frame determines that the access controller has association redirection ability, then sends enhancing association request message to the first AP equipment.

3. the method according to claim 1, wherein the site apparatus sends enhancing association request message to the One AP equipment includes:

Enhancing association request message described in the site apparatus broadcast transmission gives the first AP equipment, so that the first AP is set For the link quality information of the assessment site apparatus to the first AP equipment, and the link-quality of the first AP equipment is believed Breath is added in the enhancing association request message, is forwarded to the access controller；Alternatively,

The site apparatus unicast sends the enhancing association request message to the first AP equipment, so that the first AP is set It is standby that the enhancing association request message is forwarded to the access controller.

4. the method according to claim 1, wherein MAC of the site apparatus according to the purpose AP equipment Address and working channel complete networking association process, comprising:

If the site apparatus determines that the working channel of its own and the working channel of the purpose AP equipment mismatch, described Its working channel is switched to the working channel of the purpose AP equipment by site apparatus, and according to the MAC of the purpose AP equipment Complete networking association process in address；

If the site apparatus determines that the working channel of its own is matched with the working channel of the purpose AP equipment, according to institute The MAC Address for stating purpose AP equipment completes networking association process.

5. according to the method described in claim 4, it is characterized in that, the site apparatus is according to the MAC of the purpose AP equipment Address and working channel, before completing networking association process, the method also includes:

If the site apparatus, which determines, does not receive beacon frame or probing response frame that the purpose AP equipment is sent, spy is sent Claim frame is surveyed to the purpose AP equipment；

The site apparatus receives the probing response frame that the purpose AP equipment is sent, and obtains and carries in the probing response frame Parameter information.

6. a kind of wireless local area network access method characterized by comprising

Access controller receives the enhancing association request message that the first access point AP equipment is sent, the enhancing association request message Carry at least one information in the link quality information of alternative AP equipment and the location information of site apparatus, the alternative AP equipment For the AP equipment that site apparatus scans, the enhancing association request message is sent to the first AP by the site apparatus and sets It is standby, wherein the enhancing association request message also carries: the service quality QoS demand and/or redirection model of the site apparatus It encloses, the range for redirecting range and being used to indicate determining purpose AP equipment；

The access controller is sent to the site apparatus, the enhancing for associated response message is enhanced by the 2nd AP equipment Associated response message carries the medium access control MAC Address and working channel of the purpose AP equipment, so that the website is set It is standby that networking association process is completed according to the enhancing associated response message.

7. according to the method described in claim 6, it is characterized in that, the access controller is according to the enhancing association request report Text determines purpose AP equipment, comprising:

The access controller is according to the link quality information and operating status of the alternative AP equipment and the site apparatus Attribute information and QoS demand information, the association for obtaining each alternative AP equipment is suitable for angle value, and described be associated with is suitable for that angle value refers to AP equipment and the associated suitable degree of site apparatus；

The access controller determines that the association of each alternative AP equipment is suitable for the maximum value in angle value, and by the maximum value Corresponding alternative AP equipment AP equipment as a purpose.

8. the method according to the description of claim 7 is characterized in that if the redirection range is the enhancing association request report Each alternative AP equipment that text carries, then the access controller determines that being associated in each alternative AP equipment is suitable for that angle value is maximum AP equipment is purpose AP equipment；Alternatively,

If the AP redirected in each alternative AP equipment and pre-determined distance that range is the enhancing association request message carrying Equipment, then the access controller, which determines in each alternative AP equipment and the AP equipment in the pre-determined distance, is associated with suitability degree Being worth maximum AP equipment is purpose AP equipment.

9. according to the method described in claim 6, it is characterized in that, the access controller is closed enhancing by the 2nd AP equipment Connection response message is sent to the site apparatus, comprising:

If the enhancing association request message is what the site apparatus unicast was sent, the access controller passes through described the The enhancing associated response message is sent to the site apparatus by one AP equipment；Alternatively,

If the enhancing association request message is the site apparatus broadcast transmission, the access controller passes through described the The enhancing associated response message is sent to the site apparatus by two AP equipment, and the 2nd AP equipment is enhancing association Any AP equipment in request message.

10. a kind of Wireless LAN access device characterized by comprising

First sending module, for sending enhancing association request message to the first access point AP equipment, so that the first AP is set Standby that the enhancing association request message is sent to access controller, the enhancing association request message carries alternative AP equipment At least one information in the location information of link quality information and site apparatus, the alternative AP equipment are that the site apparatus is swept The AP equipment retouched, wherein the enhancing association request message also carries: the service quality QoS demand of the site apparatus and/ Or range is redirected, the range for redirecting range and being used to indicate determining purpose AP equipment；

First receiving module passes through the enhancing associated response message that the 2nd AP equipment is sent for receiving the access controller, The enhancing associated response message includes the medium access control MAC Address and working channel of purpose AP equipment；

First processing module is connect with first sending module and first receiving module, for according to the purpose AP The MAC Address and working channel of equipment complete networking association process.

11. device according to claim 10, which is characterized in that first receiving module is also used to obtain at least one The beacon frame that access controller issues；

If then the first processing module is also used to the beacon frame obtained according to first receiving module, the visit is determined It asks that controller has association redirection ability, then triggers first sending module and send the enhancing association request message to institute State the first AP equipment.

12. device according to claim 10, which is characterized in that first receiving module be also used to obtain it is described at least The probing response frame that one access controller issues；

If then the first processing module is also used to the probing response frame obtained according to first receiving module, institute is determined It states access controller and has association redirection ability, then trigger first sending module and send the enhancing association request message To the first AP equipment.

13. device according to claim 10, which is characterized in that first sending module is specifically used for:

Enhancing association request message described in broadcast transmission gives the first AP equipment, so as to stand described in the first AP equipment evaluation The link quality information of the first AP equipment and is added to described by point device to the link quality information of the first AP equipment Enhance in association request message, is forwarded to the access controller；Alternatively,

Unicast sends the enhancing association request message to the first AP equipment, so that the first AP equipment is by the enhancing Association request message is forwarded to the access controller.

14. device according to claim 10, which is characterized in that the first processing module is specifically used for:

If it is determined that the working channel of the site apparatus and the working channel of the purpose AP equipment mismatch, then by the website The working channel of equipment is switched to the working channel of the purpose AP equipment, and complete according to the MAC Address of the purpose AP equipment At networking association process；

If it is determined that the working channel of the site apparatus is matched with the working channel of the purpose AP equipment, then according to the purpose The MAC Address of AP equipment completes networking association process.

15. device according to claim 14, which is characterized in that the first processing module is also used to:

Before the MAC Address and working channel according to the purpose AP equipment, completion networking association process, however, it is determined that the station Point device does not receive the beacon frame or probing response frame that the purpose AP equipment is sent, then triggers the first sending module hair Send probe request to the purpose AP equipment；

And first receiving module is also used to receive the probing response frame that the purpose AP equipment is sent, and obtains the detection and rings Answer the parameter information carried in frame.

16. a kind of Wireless LAN access device characterized by comprising

Second receiving module, for receiving the enhancing association request message of the first access point AP equipment transmission, the enhancing association Request message carries at least one information in the link quality information of alternative AP equipment and the location information of site apparatus, described standby Selecting AP equipment is the AP equipment that site apparatus scans, and the enhancing association request message is sent to described by the site apparatus First AP equipment, wherein the enhancing association request message also carries: the service quality QoS demand of the site apparatus and/or Redirect range, the range for redirecting range and being used to indicate determining purpose AP equipment；

Second processing module, for determining purpose according to the received enhancing association request message of second receiving module AP equipment；

Second sending module, the enhancing associated response message for being generated the Second processing module by the 2nd AP equipment are sent out The site apparatus is given, the enhancing associated response message carries the medium access control MAC Address of the purpose AP equipment And working channel, so that the site apparatus completes networking association process according to the enhancing associated response message.

17. device according to claim 16, which is characterized in that the Second processing module is specifically used for:

According to the attribute information and QoS of the link quality information of the alternative AP equipment and operating status and the site apparatus Demand information, the association for obtaining each alternative AP equipment is suitable for angle value, and described be associated with is suitable for that angle value refers to AP equipment and website The associated suitable degree of equipment；

The association for determining each alternative AP equipment is suitable for the maximum value in angle value, and the corresponding alternative AP of the maximum value is set Standby AP equipment as a purpose.

18. device according to claim 17, which is characterized in that if the redirection range is the enhancing association request Each alternative AP equipment that message carries, then the Second processing module, which determines, is associated with suitable angle value most in each alternative AP equipment Big AP equipment is purpose AP equipment；Alternatively,

If the AP redirected in each alternative AP equipment and pre-determined distance that range is the enhancing association request message carrying Equipment, then the Second processing module, which determines to be associated in each alternative AP equipment and the AP equipment in the pre-determined distance, is suitable for The maximum AP equipment of angle value is purpose AP equipment.

19. device according to claim 16, which is characterized in that second sending module is specifically used for:

If the enhancing association request message is what the site apparatus unicast was sent, will be described by the first AP equipment Enhancing associated response message is sent to the site apparatus；Alternatively,

If the enhancing association request message is the site apparatus broadcast transmission, will be described by the 2nd AP equipment Enhancing associated response message is sent to the site apparatus, and the 2nd AP equipment is any in the enhancing association request message AP equipment.

20. a kind of site apparatus characterized by comprising

First transmitter, for sending enhancing association request message to the first access point AP equipment, so that the first AP equipment The enhancing association request message is sent to access controller, the enhancing association request message carries the chain of alternative AP equipment At least one information in the location information of road quality information and the site apparatus, the alternative AP equipment are the site apparatus The AP equipment scanned, wherein the enhancing association request message also carries: the service quality QoS demand of the site apparatus And/or range is redirected, the range for redirecting range and being used to indicate determining purpose AP equipment；

First receiver passes through the enhancing associated response message that the 2nd AP equipment is sent, institute for receiving the access controller State the medium access control MAC Address and working channel that enhancing associated response message includes purpose AP equipment；

First processor is connect with first transmitter and first receiver, for according to the purpose AP equipment MAC Address and working channel complete networking association process.

21. site apparatus according to claim 20, which is characterized in that first receiver is also used to:

Obtain the beacon frame that at least one access controller issues；

If the first processor is also used to determine the access control according to the received beacon frame of first receiver Device has association redirection ability, then triggers first transmitter and send the enhancing association request message to the first AP Equipment.

22. site apparatus according to claim 20, which is characterized in that first receiver is also used to:

If then the first processor is also used to determine that the access controller has association and resets according to the probing response frame To ability, then triggers first transmitter and send the enhancing association request message to the first AP equipment.

23. site apparatus according to claim 20, which is characterized in that first transmitter is specifically used for:

24. site apparatus according to claim 20, which is characterized in that the first processor is specifically used for:

If it is determined that the working channel of the site apparatus and the working channel of the purpose AP equipment mismatch, then its work is believed Road is switched to the working channel of the purpose AP equipment, and completes to network according to the MAC Address of the purpose AP equipment and be associated with Journey；

25. site apparatus according to claim 24, which is characterized in that the first processor is also used to:

Before the MAC Address and working channel according to the purpose AP equipment, completion networking association process, however, it is determined that do not receive The beacon frame or probing response frame sent to the purpose AP equipment then triggers first transmitter and sends probe request extremely The purpose AP equipment；

And first receiver is also used to receive the probing response frame that the purpose AP equipment is sent, and obtains the probe response The parameter information carried in frame.

26. a kind of access controller characterized by comprising

Second receiver, for receiving the enhancing association request message of the first access point AP equipment transmission, the enhancing association is asked Message is asked to carry at least one information in the link quality information of alternative AP equipment and the location information of site apparatus, it is described alternative AP equipment is the AP equipment that scans of site apparatus, and the enhancing association request message is sent to described the by the site apparatus One AP equipment, wherein the enhancing association request message also carries: the service quality QoS demand of the site apparatus and/or again Orientation range, the range for redirecting range and being used to indicate determining purpose AP equipment；

Second processor, for determining that purpose AP is set according to the received enhancing association request message of the second receiver It is standby；

Second transmitter, for being sent to the enhancing associated response message that the second processor generates by the 2nd AP equipment The site apparatus, the enhancing associated response message carry the medium access control MAC Address and work of the purpose AP equipment Make channel, so that the site apparatus completes networking association process according to the enhancing associated response message.

27. access controller according to claim 26, which is characterized in that the second processor is specifically used for:

28. access controller according to claim 27, which is characterized in that if the redirection range is enhancing pass Join each alternative AP equipment that request message carries, then the second processor, which determines in each alternative AP equipment, is associated with suitability degree Being worth maximum AP equipment is purpose AP equipment；Alternatively,

If the AP redirected in each alternative AP equipment and pre-determined distance that range is the enhancing association request message carrying Equipment, then the second processor, which determines in each alternative AP equipment and the AP equipment in the pre-determined distance, is associated with suitability degree Being worth maximum AP equipment is purpose AP equipment.

29. access controller according to claim 26, which is characterized in that second transmitter is specifically used for: