CN106982433B

CN106982433B - A kind of method and wireless controller making access terminal STA access WLAN

Info

Publication number: CN106982433B
Application number: CN201710243303.XA
Authority: CN
Inventors: 杨英; 阮玉城
Original assignee: Beijing Star Net Ruijie Networks Co Ltd
Current assignee: Beijing Star Net Ruijie Networks Co Ltd
Priority date: 2017-04-14
Filing date: 2017-04-14
Publication date: 2019-07-23
Anticipated expiration: 2037-04-14
Also published as: CN106982433A

Abstract

The embodiment of the present invention provides a kind of method for making access terminal STA access WLAN, the following steps are included: obtaining corresponding each signal strength RSSI between the first access terminal STA and the associated each wireless access point AP of the first STA, determine that AP gathers according to the RSSI；When the first STA initiates certification request to the first AP, determine whether the first AP belongs to the AP set；When the first AP is in AP set, corresponding steps are executed, when the first AP is not belonging in the AP set, execute corresponding steps, meanwhile, the embodiment of the present invention also provides a kind of wireless controller for making access terminal STA access WLAN.The beneficial effect of the embodiment of the present invention is: reducing the time of access terminal access WLAN.

Description

A kind of method and wireless controller making access terminal STA access WLAN

Technical field

The present invention relates to data communication field, especially a kind of method for making access terminal STA access WLAN and Wireless controller.

Background technique

In recent years, based on 802.11 agreement of IEEE WLAN (Wireless Local Area Network, WLAN the advantage and mature technology that) are protruded with it and grow rapidly, be widely used in market, enterprise, hospital, school and meeting The network structions such as field.

The general access procedure of WLAN terminal has been standardized in 802.11 agreements are as follows:

Step 1: terminal sends probe request (probe requests thereby) message, and wireless access point AP replys probe Response (detection is replied) message；

Step 2: terminal sends authentication request packet, and AP replys certification response message；

Step 3: terminal sends association request (association request) message, and AP replys association Response (association is replied) message.

By these three stages, terminal can normally access wlan network.If any one stage failure, terminal will Return to step 1, probe requests thereby stage.

When terminal step of initiating two is connected with step 3, wireless access point AP can assess the state of itself and feed back to end Hold whether stage connection succeeds, such as the certification request of step 2, AP can reply auth response success certification Success message or auth response fail authentification failure message, in the association request of step 3, AP Reply association response, it can be noted that be successfully associated or fail, the original of failure is indicated if being associated with failure Cause.Due to the diversification of WLAN terminal, the processing mode for three steps for causing different end-ons to enter is different, and part is eventually End is in step 2 authentification failure, it will removal search others AP attempts to access, and part terminal may reattempt certification Just removal search others AP attempts to access after several times, more has the part terminal may all to attempt always to access the AP.

Due to the diversity of terminal, goes to handle all terminals with a kind of same access guidance mode and will lead to compatibility Problem, so that terminal access experience in part is poor.

Summary of the invention

In order to solve the above-mentioned technical problem, the embodiment of the present invention adopts the following technical scheme that

A method of so that access terminal STA is accessed WLAN, comprising the following steps:

Obtain corresponding each letter between the first access terminal STA and the associated each wireless access point AP of the first STA Number intensity RSSI determines that AP gathers according to the RSSI；

When the first STA initiates certification request to the first AP, determine whether the first AP belongs to the AP set；

When the first AP is in AP set, determine whether the load of the first AP meets the AP set Load balancing, if meeting, it is determined that the certification request is handled by the first AP,

If not meeting, determined whether there is according to the mark of the first STA in the message of the certification request and institute State the first boot policy or the second boot policy that mark matches, and if it exists, then according to first boot policy or second Boot policy indicates other AP of the first STA access in the AP set in addition to the first AP, if it does not exist, then Other AP of the first STA access in the AP set in addition to the first AP are indicated according to the first boot policy；

When the first AP is not belonging in the AP set, according to described first in the message of the certification request The mark of STA determines third boot policy, indicates that the first STA is accessed in the AP set according to the third boot policy The 2nd AP.

Optionally, described the step of determining AP set according to the RSSI, specifically includes:

Setting signal intensity threshold upper and lower bound then will be described when the RSSI is between the upper and lower bound The corresponding AP of RSSI is put into the AP set.

Optionally, whether the load of the determination the first AP meets the step of load balancing of the AP set It specifically includes:

Described first is determined according to the access terminal STA quantity accessed on the flow or the first AP of the first AP Whether AP meets the load balancing of the AP set.

Optionally, first boot policy includes:

It include authentication failure message in the certification response message for feeding back to the first STA, in order to the first STA According to other AP of authentication failure message access in the AP set in addition to the first AP；

Second boot policy includes:

Comprising association failure information in the association response message for feeding back to the first STA, in order to the first STA According to other AP of the association failure information access in the AP set in addition to the first AP；

The third boot policy includes:

It include authentication failure message in the certification response message for feeding back to the first STA, in order to the first STA The 2nd AP in the AP set is accessed according to the authentication failure message, or, in the association response for feeding back to the first STA Comprising association failure information in message, in order to which the first STA is accessed in the AP set according to the association failure information The 2nd AP.

Optionally, it is described if it does not exist, then indicate that the first STA access removes the first AP according to the first boot policy In addition the AP set in other AP the step of after include:

Preset counter values are increased by 1；

The certification request whether the first STA re-initiates to the first AP is determined, if it is not, then confirming described One boot policy is effective, records the corresponding relationship of the mark and first boot policy of the first STA, if so, judgement Whether the counter values reach predetermined threshold value,

If reaching predetermined threshold value, the corresponding relationship of the mark and second boot policy of the first STA is recorded, And other in the AP set in addition to the first AP of the first STA access are indicated according to second boot policy AP。

The embodiment of the present invention further aspect is that, also provide one kind, one kind makes access terminal STA access WLAN Wireless controller, comprising:

Acquiring unit, for obtain the first access terminal STA each wireless access point AP associated with the first STA it Between corresponding each signal strength RSSI,

Set establishes unit, for determining that AP gathers according to the RSSI；

First determination unit, for determining that the first AP is when the first STA initiates certification request to the first AP It is no to belong to the AP set；

Second determination unit, for determining that the load of the first AP is when the first AP is in AP set The no load balancing for meeting the AP set,

Third determination unit, if for meeting, it is determined that the certification request is handled by the first AP, if not meeting, It is determined whether there is according to the mark of the first STA in the message of the certification request and identifies first to match with described Boot policy or the second boot policy,

Strategy execution unit is used for if it exists, then according to first boot policy or the instruction of the second boot policy Other AP of first STA access in the AP set in addition to the first AP, if it does not exist, then according to the first boot policy Indicate other AP of the first STA access in the AP set in addition to the first AP；

4th determination unit, for when the first AP is not belonging in AP set, according to the certification request The mark of the first STA in message determines third boot policy；

The strategy execution unit is also used to indicate that the first STA accesses the AP according to the third boot policy The 2nd AP in set.

Optionally, the set is established unit and is specifically used for:

Optionally, second determination unit is specifically used for when the first AP is in AP set, according to described The access terminal STA quantity accessed on the flow of first AP or the first AP determines whether the first AP meets the AP The load balancing of set.

Optionally, first boot policy includes:

Second boot policy includes:

The third boot policy includes:

Optionally, the wireless controller further include:

Policy update unit, for indicating that the first STA connects according to the first boot policy in the strategy execution unit After entering other AP in the AP set in addition to the first AP, preset counter values are increased by 1；

If reaching predetermined threshold value, the corresponding relationship of the mark and second boot policy of the first STA is recorded；

The strategy execution unit is also used to be indicated the first STA access except described according to second boot policy Other AP in AP set other than first AP.

The beneficial effect of the embodiment of the present invention is: reducing the time of access terminal access WLAN.

Detailed description of the invention

In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be in embodiment or description of the prior art Required attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the invention Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings Obtain other attached drawings.

Fig. 1 is a kind of method flow diagram of the embodiment of the present invention；

Fig. 2 is a kind of method flow diagram of the embodiment of the present invention；

Fig. 3 is a kind of structure drawing of device of the embodiment of the present invention；

Fig. 4 is a kind of structure drawing of device of the embodiment 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.

A method of so that access terminal STA is accessed WLAN, as shown in Figure 1, comprising the following steps:

S101 is obtained corresponding between the first access terminal STA and the associated each wireless access point AP of the first STA Each signal strength RSSI determines that AP gathers according to the RSSI；

S103 determines whether the first AP belongs to the AP when the first STA initiates certification request to the first AP Set；

S105 determines whether the load of the first AP meets the AP when the first AP is in AP set The load balancing of set,

S107, if meeting, it is determined that the certification request is handled by the first AP,

S109 is determined whether there is if not meeting according to the mark of the first STA in the message of the certification request The first boot policy or the second boot policy to match with the mark,

S111, and if it exists, then indicate that the first STA access removes according to first boot policy or the second boot policy Other AP in AP set other than first AP,

S113 then indicates the first STA access in addition to the first AP according to the first boot policy if it does not exist Other AP in the AP set；

S115, when the first AP is not belonging in the AP set, according in the message of the certification request The mark of first STA determines third boot policy, indicates that the first STA accesses the AP collection according to the third boot policy The 2nd AP in conjunction.

Optionally, in the step S101, described the step of determining AP set according to the RSSI, is specifically included:

Optionally, in the step S105, whether the load of determination the first AP meets the negative of the AP set The step of carrying balance policy specifically includes:

Optionally, first boot policy includes:

Second boot policy includes:

The third boot policy includes:

Optionally, as shown in Fig. 2, including: after the step S113

Preset counter values are increased by 1 by S117；

S119 determines the certification request whether the first STA re-initiates to the first AP,

S121 records the mark and described the of the first STA if it is not, then confirm that first boot policy is effective The corresponding relationship of one boot policy,

S123, if so, judge whether the counter values reach predetermined threshold value,

S125, if reaching predetermined threshold value, the mark for recording the first STA is corresponding with second boot policy Relationship, and indicate the first STA access in the AP set in addition to the first AP according to second boot policy Other AP.

The embodiment of the present invention is further elaborated below with reference to concrete application scene comprising the steps of:

Step 1: access terminal STA i initiates auth request authentication request packet, and application accesses the certification of AP j, Wherein, i, j are the natural number more than or equal to 1；

Step 2: the RSSI between STA and each AP is obtained on wireless controller AC, obtains RSSI={ RSSI₁, RSSI₂,...,RSSI_N, wherein N is the number of AP, and each AP has corresponding RSSI；

Step 3: AC gathers according to the first access AP that RSSI adjudicates STA i, C₁=i | (RSSI_max-RSSI_th)≤ RSSI_i≤RSSI_max, all RSSI are represented in { RSSI_max-RSSI_th,RSSI_maxBetween AP belong to the first access AP set, Wherein RSSI_maxRepresent the maximum value in RSSI array, RSSI_thFor RSSI thresholding；

Step 4: if AP j belongs to the first access set C₁, then continue in next step, otherwise to judge that STA needs to guide access WLAN；

Step 5: AC judges AP j in set C₁In whether meet load balancing, the mode of load balancing has It is a variety of, it can be and be also possible to, for the load balancing based on number of users, to obtain based on number of users based on flow Take the number of users on each AP, User={ User₁,User₂,...,User_N, if User_j-User_p< N_th, wherein p ∈ C₁And N_thFor load counterbalanced gate limit, meet load balancing state then representing, then being judged as that STA does not need guidance access wireless local area Otherwise net is judged as that STA needs to guide access WLAN；

The case where guiding access WLAN, is needed for STA, can select to close from policy library by the mark of STA The boot policy of reason, in embodiments of the present invention, for STA boot policy there are two types of, respectively 1): replying to STA's In auth response authentication response message, auth fail authentification failure is indicated, so that STA be guided to access other AP.2): It replies in the association response associated response message of STA, indicates association fail association failure simultaneously With reason code 17, show that AP access quantity has expired, so that STA be guided to access other AP.Since STA is in access procedure, Any one is suppressed in stage, can all return to the probe request probe requests thereby stage of the first step, so if all taking the Two kinds of boot policies, then the turn-on time of STA can be elongated, affect experience；Meanwhile in order to reduce turn-on time, can take The first boot policy, but STA the first possible boot policy in access procedure in part is invalid, when AC discovery is invalid, Second of boot policy can only be used, at this moment turn-on time is longer instead, so needing to select best draw from policy database Lead strategy.The process that best boot policy is selected from policy database can be such that

Step 1: AC extracts the MAC Address of STA from Auth request authentication request packet；

Step 2: by MAC Address and policy data storehouse matching；

Step 3: if successful match, then taking corresponding boot policy；

Step 4: if matching is unsuccessful, in order to reduce the turn-on time of STA, then the first boot policy is first selected, It replies in the auth response authentication response message of STA, indicates auth fail authentification failure.

The above-mentioned strategy of execution can be passed through and collect the information fed back in implementation procedure to update terminal strategy database, had Body the following steps are included:

Step 1: when policy data storehouse matching is unsuccessful, counter is set to 0；

Step 2: preferentially selecting the first boot policy to guide current STA, authentication authorization and accounting boot policy, and counter Numerical value increases by 1；

Step 3: analysis STA re-initiates whether auth certification request is still directed to the AP j originally accessed, if not It is to illustrate the guidance of the first boot policy effectively, { MAC Address of STA, the first guidance plan is added in policy database Slightly }, if so, so judging whether counter values reach thresholding；

Step 4: if counter values are not up to thresholding, continuing the process of step 2 and step 3, if reaching thresholding, { MAC Address of STA, second of boot policy } is added in policy database, and using the in subsequent boots access procedure Two kinds of boot policies, i.e. association boot policy.

The embodiment of the present invention further aspect is that, also provide it is a kind of make access terminal STA access WLAN nothing Lane controller, as shown in Figure 3, comprising:

Acquiring unit 201, for obtaining the first access terminal STA each wireless access point associated with the first STA Corresponding each signal strength RSSI between AP,

Set establishes unit 203, for determining that AP gathers according to the RSSI；

First determination unit 205, for determining described first when the first STA initiates certification request to the first AP Whether AP belongs to the AP set；

Second determination unit 207, for determining the load of the first AP when the first AP is in AP set Whether the load balancing of the AP set is met,

Third determination unit 209, if for meeting, it is determined that the certification request is handled by the first AP, if not being inconsistent It closes, is determined whether there is according to the mark of the first STA in the message of the certification request and matched with the mark First boot policy or the second boot policy,

Strategy execution unit 211, for if it exists, then indicating institute according to first boot policy or the second boot policy Other AP of the first STA access in the AP set in addition to the first AP are stated, if it does not exist, then according to the first guidance plan Slightly indicate other AP of the first STA access in the AP set in addition to the first AP；

4th determination unit 213, for when the first AP is not belonging in AP set, according to the certification request Message in the mark of the first STA determine third boot policy；

The strategy execution unit 211 is also used to according to third boot policy instruction the first STA access The 2nd AP in AP set.

Optionally, the set is established unit 203 and is specifically used for:

Optionally, second determination unit 207 is specifically used for when the first AP is in AP set, according to The access terminal STA quantity accessed on the flow or the first AP of first AP determines whether the first AP meets institute State the load balancing of AP set.

Optionally, first boot policy includes:

Second boot policy includes:

The third boot policy includes:

Optionally, as shown in figure 4, the wireless controller further include:

Policy update unit 215, for indicating described first according to the first boot policy in the strategy execution unit 211 After other AP of STA access in the AP set in addition to the first AP, preset counter values are increased by 1；

The strategy execution unit 211 is also used to be indicated the first STA access except institute according to second boot policy State other AP in the AP set other than the first AP.

The present invention be referring to according to the method for the embodiment of the present invention, the process of equipment (system) and computer program product Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates, Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or The function of being specified in multiple boxes.

These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one The step of function of being specified in a box or multiple boxes.

Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features； And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and Range.

Claims

1. a kind of method for making access terminal STA access WLAN, which comprises the following steps:

Obtain corresponding each signal strength RSSI between the first STA and the associated each wireless access point AP of the first STA, root Determine that AP gathers according to the RSSI；

When the first AP is in AP set, determine whether the load of the first AP meets the load of the AP set Balance policy, if meeting, it is determined that the certification request is handled by the first AP,

If not meeting, determined whether there is and the mark according to the mark of the first STA in the message of the certification request Sensible matched first boot policy or the second boot policy, and if it exists, then guided according to first boot policy or second Strategy indicates other AP of the first STA access in the AP set in addition to the first AP, if it does not exist, then basis First boot policy indicates other AP of the first STA access in the AP set in addition to the first AP, wherein institute Stating boot policy is the strategy that STA needs to guide access WLAN；

When the first AP is not belonging in the AP set, according to the first STA's in the message of the certification request It identifies and determines third boot policy, indicate that the first STA accesses the in AP set according to the third boot policy Two AP.

2. the method as described in claim 1, which is characterized in that described the step of determining AP set according to the RSSI specifically wraps It includes:

Setting signal intensity threshold upper and lower bound, when the RSSI is between the upper and lower bound, then by the RSSI Corresponding AP is put into the AP set.

3. the method as described in claim 1, which is characterized in that whether the load of determination the first AP meets the AP The step of load balancing of set, specifically includes:

Determine that the first AP is according to the access terminal STA quantity accessed on the flow or the first AP of the first AP The no load balancing for meeting the AP set.

4. the method as described in claim 1, which is characterized in that first boot policy includes:

In the certification response message for feeding back to the first STA include authentication failure message, in order to the first STA according to Other AP of the authentication failure message access in the AP set in addition to the first AP；

Second boot policy includes:

In the association response message for feeding back to the first STA comprising association failure information, in order to the first STA according to Other AP of the association failure information access in the AP set in addition to the first AP；

The third boot policy includes:

In the certification response message for feeding back to the first STA include authentication failure message, in order to the first STA according to The authentication failure message accesses the 2nd AP in the AP set, or, in the association response message for feeding back to the first STA In comprising association failure information, the in AP set is accessed according to the association failure information in order to the first STA Two AP.

5. method as claimed in claim 4, which is characterized in that it is described if it does not exist, then according to the first boot policy indicate institute Include: after the step of stating other AP of the first STA access in the AP set in addition to the first AP

Preset counter values are increased by 1；

The certification request whether the first STA re-initiates to the first AP is determined, if it is not, then confirming that described first draws It leads strategy effectively, records the corresponding relationship of the mark and first boot policy of the first STA, if so, described in judgement Whether counter values reach predetermined threshold value,

If reaching predetermined threshold value, the corresponding relationship of the mark and second boot policy of the first STA, and root are recorded Other AP of the first STA access in the AP set in addition to the first AP are indicated according to second boot policy.

6. a kind of wireless controller AC for making access terminal STA access WLAN characterized by comprising

Acquiring unit, for obtaining corresponding each letter between the first STA and the associated each wireless access point AP of the first STA Number intensity RSSI,

Set establishes unit, for determining that AP gathers according to the RSSI；

First determination unit, for determining whether the first AP belongs to when the first STA initiates certification request to the first AP Gather in the AP；

Second determination unit, for determining whether the load of the first AP accords with when the first AP is in AP set The load balancing of the AP set is closed,

Third determination unit, if for meeting, it is determined that the certification request is handled by the first AP, if not meeting, according to The mark of the first STA in the message of the certification request determines whether there is and first guidance for identifying and matching Strategy or the second boot policy, wherein the boot policy is the strategy that STA needs to guide access WLAN；

Strategy execution unit, for if it exists, then indicating described first according to first boot policy or the second boot policy Other AP of STA access in the AP set in addition to the first AP are then indicated according to the first boot policy if it does not exist Other AP of the first STA access in the AP set in addition to the first AP；

4th determination unit, for when the first AP is not belonging in AP set, according to the message of the certification request In the mark of the first STA determine third boot policy；

The strategy execution unit is also used to indicate that the first STA accesses the AP set according to the third boot policy In the 2nd AP.

7. AC as claimed in claim 6, which is characterized in that the set is established unit and is specifically used for:

8. AC as claimed in claim 6, which is characterized in that second determination unit is specifically used for existing as the first AP When in the AP set, determined according to the access terminal STA quantity accessed on the flow or the first AP of the first AP Whether the first AP meets the load balancing of the AP set.

9. AC as claimed in claim 6, which is characterized in that first boot policy includes:

Second boot policy includes:

The third boot policy includes:

10. AC as claimed in claim 9, which is characterized in that further include:

Policy update unit, for indicating that the first STA access removes according to the first boot policy in the strategy execution unit After other AP in AP set other than first AP, preset counter values are increased by 1；

The strategy execution unit is also used to be indicated the first STA access except described first according to second boot policy Other AP in AP set other than AP.