[go: up one dir, main page]

CN102833824A - Access method and device for wireless local area network and network equipment - Google Patents

Access method and device for wireless local area network and network equipment Download PDF

Info

Publication number
CN102833824A
CN102833824A CN2012103173003A CN201210317300A CN102833824A CN 102833824 A CN102833824 A CN 102833824A CN 2012103173003 A CN2012103173003 A CN 2012103173003A CN 201210317300 A CN201210317300 A CN 201210317300A CN 102833824 A CN102833824 A CN 102833824A
Authority
CN
China
Prior art keywords
sta
signal strength
received signal
access
roaming
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN2012103173003A
Other languages
Chinese (zh)
Other versions
CN102833824B (en
Inventor
苏毅龙
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ruijie Networks Co Ltd
Original Assignee
Fujian Star Net Communication Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujian Star Net Communication Co Ltd filed Critical Fujian Star Net Communication Co Ltd
Priority to CN201210317300.3A priority Critical patent/CN102833824B/en
Publication of CN102833824A publication Critical patent/CN102833824A/en
Application granted granted Critical
Publication of CN102833824B publication Critical patent/CN102833824B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Mobile Radio Communication Systems (AREA)

Abstract

本发明公开了一种无线局域网的接入方法和装置、网络设备，该方法通过AC根据来自至少两个AP上报的对同一个STA的接入参数进行分析判断，当接入参数中不包括AP与STA相关联的标识的情况下，根据各个接入参数中的AP接收信号强度值来确定STA的关联AP，并指示关联AP向STA发送探测响应，当接入参数中包括AP与STA相关联的标识的情况下，根据各个接入参数中的AP接收信号强度值来确定STA的漫游AP，则AC能够高效、可靠地为STA确定关联AP或漫游AP，而无需由STA来确定关联AP或漫游AP，能够避免现有的瘦AP模型的WLAN中，由STA进行接入决策和漫游决策而导致的STA接入效率低和漫游效率低的问题。

The invention discloses a wireless local area network access method, device and network equipment. In the method, the AC analyzes and judges the access parameters of the same STA reported by at least two APs. When the access parameters do not include the AP In the case of the identity associated with the STA, determine the associated AP of the STA according to the AP received signal strength value in each access parameter, and instruct the associated AP to send a probe response to the STA. When the access parameter includes the AP associated with the STA In the case of the identity of the STA, the AC can determine the STA’s roaming AP according to the AP received signal strength value in each access parameter, and the AC can efficiently and reliably determine the associated AP or roaming AP for the STA without the STA determining the associated AP or Roaming APs can avoid the problems of low STA access efficiency and low roaming efficiency caused by STAs making access decisions and roaming decisions in the existing thin AP model WLAN.

Description

The cut-in method of WLAN and device, the network equipment
Technical field
The present invention relates to wireless communication system, particularly, relate to a kind of cut-in method and device, network equipment of WLAN.
Background technology
At WLAN (WLAN; Wireless Local Area Network) in; Portable work station (or being called website) (STA; Station) utilize probe request (Probe Request) to scan which 802.11 network is arranged in the region at present; If the AP among this WLAN receives this probe request, and AP and STA whether consult relevant network parameter compatible, if compatibility then AP feedback probe response (probe response) frame are to STA; Probing response frame has comprised all parameter informations of wireless beacon frame (beacon), and portable work station can be adjusted according to the parameter information in the probing response frame that receives and add the network desired parameters.
At present, among the WLAN of thin AP model (being the AC+AP model), user cut-in managing method comprises that STA inserts equally loaded management and STA roaming management.
Insert in the load-balancing method at STA; Through wireless integrated manipulator (AC; Access Control) number of users of each AP is monitored; When the AP number of users that connects under the AC did not reach the upper limit that this AP disposes, STA can carry out association (be STA pass through this AP insert WLAN) to this AP; If the associated user number of the AP of current association has reached the upper limit of configuration; The then related failure of STA; STA will select the best AP of current demand signal to carry out association in this case; And STA selects other AP to carry out association with after the number of times of the related failure of the best AP of this signal reaches threshold value once more.
Particularly, Fig. 1 shows the schematic network structure of the WLAN of existing thin AP model, and is as shown in Figure 1; AC is through four AP of switch (Switch) second line of a couplet, i.e. Fit AP-A, Fit AP-B, Fit AP-C and Fit AP-D, and AP-A has inserted 7 STA; AP-B has inserted 8 STA, has inserted 2 STA under the AP-C, has inserted 2 users under the AP-D; STA 1 is to be accessed in WLAN, and the signal strength signal intensity (A-ARR) that AP-A receives STA 1 is-40dBm that the signal strength signal intensity (B-ARR) that AP-B receives STA 1 is-45dBm; The signal strength signal intensity (C-ARR) that AP-C receives STA 1 is-40dBm; The signal strength signal intensity (D-ARR) that AP-D receives STA 1 is-35dBm that the signal strength signal intensity (A-SRR) that STA 1 receives AP-A is-55dBm that the signal strength signal intensity (B-SRR) that STA 1 receives AP-B is-50dBm; The signal strength signal intensity (C-SRR) that STA 1 receives AP-C is-60dBm that the signal strength signal intensity (D-SRR) that STA 1 receives AP-D is-60dBm.Fig. 2 shows the process chart that existing STA inserts network as shown in Figure 1, and this processing procedure comprises the steps:
Step 201, when STA 1 carries out network selecting related the time, can at first send the probe request (prob request) of broadcasting;
Step 202, (when for example AP-A ~ AP-D) receives the probe requests thereby that STA sends, all can reply the probe response (prob response) of clean culture, and carry some parameter informations of self network as the AP near the wireless network the STA 1; When STA 1 received the probe response that AP-A ~ AP-D replys, at this time STA can be according to receiving that the signal magnitude of this probe response preferentially selects signal to carry out association preferably, and for example, STA 1 has selected AP-B (B-SRR:-50);
Step 203, STA 1 send a message identifying (Auth Request) and give AP-B;
Step 204, AP-B reply authentication response (Auth Response) to STA 1;
After step 205, authentication were passed through, STA 1 sent association request (Assoc Request) to AP-B;
Step 206, AP-B send to AC with association request (Assoc Request), and AC carries out related legitimacy verification;
Step 207, AC identify this STA and want the number of users on the related AP-B to reach the upper limit, then reply the associated response message of related failure;
Step 208, AP-B send to STA 1 clean culture and do not allow related message;
Step 209, STA 1 related failure because this network is the preferred network in the STA buffer memory, so STA is related in association failure meeting continuation attempted authentication, promptly repeats above-mentioned steps 205 to 208 and reach predetermined times;
Step 210, STA 1 broadcast once more and send probe request (prob request);
Step 211, AP-A ~ AP-D respond the probe requests thereby of STA1 respectively, and probe response (prob response) is replied in clean culture;
After step 212, STA 1 discharges AP-B, select the best AP of signal to carry out association, AP-A for example, STA 1 sends association request (Assoc Request) to AP-A;
Step 213, AP-A send to AC with association request;
Step 214, AC carry out related legitimacy verification, and AC judges that the number of users on the AP-A does not reach the upper limit, replys related successful response message to AP-A;
Step 215, AP-A send related successful associated response message to STA 1, allow STA 1 to insert, STA 1 related success.
It is thus clear that; Existing user management load-balancing method can cause following at least two problems: first; STA can carry out the repeatedly related of repetition under the situation of association failure; And importantly the association failure stage of STA is the phase III that is in agreement association process regulation, and this has just greatly wasted bandwidth and access efficiency is low; The second, STA is under identical locus and the metastable situation of WLAN environment relatively stablely, the decision process that the each association of STA all will be carried out repetition, and this causes, and STA inserts slowly, access efficiency is low.
On the other hand, in the STA roaming management, the roaming of STA is through after receiving beancon or receiving probing response frame, identifies interior network signal of a period of time and speed variation has taken place, and just roams decision-making.But; According to the agreement regulation, beancon is a broadcasting packet, and its transmission is fixed at interval; And after the STA transmission probe requests thereby; AP only can return a probe response, as STA from some network mobile to the another one network time, can cause STA can not receive beancon message or detection response message in time so; Thereby make the STA network information that can not upgrade in time trigger roaming decision-making, the lower problem of roaming efficient, the STA long period is in the situation that will go offline under the more weak environment of signal like this.
Thus it is clear that, in the WLAN of present thin AP model, exist by STA and insert decision-making and roaming decision-making and the STA access efficiency that causes is low and roam inefficient problem.
Summary of the invention
In view of this; The embodiment of the invention provides a kind of cut-in method and device, network equipment of WLAN; In the WLAN that solves existing thin AP model, insert decision-making and roaming decision-making and the STA access efficiency that causes is low and roam inefficient problem by STA.
Embodiment of the invention technical scheme is following:
A kind of cut-in method of WLAN; Comprise: wireless integrated manipulator AC receives the access parameter to same site STA from least two access point AP respectively in the section at the fixed time; Each said access parameter be each said AP according to from the same probe requests thereby of said STA and definite, said access parameter comprises: the sign whether the reception signal strength values when said AP receives said probe requests thereby and said AP and said STA related; Said AC does not all comprise under the situation of the sign that AP is associated with said STA in judging each access parameter; Receive signal strength values according to the AP in each access parameter and confirm the associated AP of said STA, and indicate determined associated AP to send probe response to said STA; Said AC goes out under the situation of the sign that comprises in the said access parameter that AP is associated with said STA in interpretation; Receive signal strength values according to the AP in each access parameter and confirm the roaming AP of said STA, and indicate determined roaming AP to send probe response to said STA.
A kind of access device of WLAN; Comprise: receiver module; Receive access parameter respectively in the section at the fixed time to same site STA from least two access point AP; Each said access parameter be each said AP according to from the same probe requests thereby of said STA and definite, said access parameter comprises: the sign whether the reception signal strength values when said AP receives said probe requests thereby and said AP and said STA related; Judge module is judged the sign that whether comprises in each access parameter that AP is associated with said STA; AM access module; Be used for judging under the situation that each access parameter all do not comprise the sign that AP is associated with said STA at said judge module; Receive signal strength values according to the AP in each access parameter and confirm the associated AP of said STA, and indicate determined associated AP to send probe response to said STA; Roam module; Be used for judging at access parameter and comprise under the situation of the sign that AP is associated with said STA at said judge module; Receive signal strength values according to the AP in each access parameter and confirm the roaming AP of said STA, and indicate determined roaming AP to send probe response to said STA.
A kind of network equipment comprises the access device of aforesaid WLAN.
The embodiment of the invention is carried out analysis and judgement through AC according to the access parameter to same STA that reports from least two AP; When not comprising in the access parameter under the situation of the sign that AP is associated with STA; Receive the associated AP that signal strength values is confirmed STA according to the AP in each access parameter; And indicate associated AP to send probe response to STA, under the situation that comprises the sign that AP is associated with STA in the access parameter, receive the roaming AP that signal strength values is confirmed STA according to the AP in each access parameter; Then AC can be efficiently, confirm associated AP or roaming AP for STA reliably; And need not to confirm to avoid associated AP or roaming AP among the WLAN of existing thin AP model by STA, insert decision-making and roaming decision-making and the STA access efficiency that causes is low and roam inefficient problem by STA.
Other features and advantages of the present invention will be set forth in specification subsequently, and, partly from specification, become apparent, perhaps understand by embodiment of the present invention.The object of the invention can be realized through the structure that in the specification of being write, claims and accompanying drawing, is particularly pointed out and obtained with other advantages.
Description of drawings
Fig. 1 is the schematic network structure of the WLAN of existing thin AP model;
Fig. 2 inserts the process chart of network as shown in Figure 1 for existing STA;
The workflow diagram of the cut-in method of the WLAN that Fig. 3 provides for the embodiment of the invention;
The structured flowchart of the access device of the WLAN that Fig. 4 provides for the embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are described, should be appreciated that embodiment described herein only is used for explanation and explains the present invention, and be not used in qualification the present invention.
Among the WLAN to existing thin AP model; Insert decision-making and roaming decision-making and the STA access efficiency that causes is low and roam inefficient problem by STA; The embodiment of the invention has proposed a kind of cut-in method and device of WLAN; In the method, come to come for STA confirms associated AP or roaming AP, comprise in the access parameter that whether related AP receive reception signal strength values that the probe requests thereby from STA is and AP and STA sign according to the access parameter that at least two AP report for same STA by AC; Can determine associated AP or the roaming AP of STA efficiently, reliably, thereby can solve the aforementioned problems in the prior.
Be described in detail in the face of the embodiment of the invention down.
Fig. 3 shows the workflow diagram of the cut-in method of the WLAN that the embodiment of the invention provides, and as shown in Figure 3, this method comprises:
Step 301, AC receive the access parameter to same STA from least two access point AP respectively in the section at the fixed time; Each access parameter be each AP based on from the same probe requests thereby of this STA and definite, access parameter comprises: the sign whether the reception signal strength values when AP receives probe requests thereby and AP and STA related;
Step 302, AC all do not comprise under the situation of the sign that AP is associated with STA in judging each access parameter; Receive signal strength values based on the AP in each access parameter and confirm the associated AP of STA, and indicate determined associated AP to send probe response to STA;
Step 303, judge under the situation of the sign that comprises in the access parameter that AP is associated with STA, receive signal strength values according to the AP in each access parameter and confirm the roaming AP of STA, and indicate determined roaming AP to send probe response to STA at AC.
Through above-mentioned processing procedure; AC carries out analysis and judgement according to the access parameter to same STA that reports from least two AP; When not comprising in the access parameter under the situation of the sign that AP is associated with STA; Receive the associated AP that signal strength values is confirmed STA according to the AP in each access parameter, under the situation that comprises the sign that AP is associated with STA in the access parameter, receive the roaming AP that signal strength values is confirmed STA according to the AP in each access parameter; Then AC can be efficiently, confirm associated AP or roaming AP for STA reliably; Confirm to avoid associated AP or roaming AP among the WLAN of existing thin AP model and need not STA, insert decision-making and roaming decision-making and the STA access efficiency that causes is low and roam inefficient problem by STA.
Below respectively to confirming that associated AP and the processing procedure of roaming AP are elaborated.
(1), confirms associated AP
Step 1, AC are based on the sign of the STA in the access parameter; In the contingency table of setting up in advance, search the associated record that whether has STA, under the situation of the associated record that has STA, handle proceeding to step 2; Under the situation of the associated record that does not have STA, handle proceeding to step 3; Wherein, Record the associated record of each STA that inserts WLAN in the contingency table; Article one, the sign of reception signal strength values when sign, each AP that comprises a STA in the associated record receives the probe requests thereby of this STA broadcasting and the associated AP of this STA, the associated record in the contingency table is after the associated AP of at every turn having confirmed STA, to note;
Step 2, receive signal strength values, confirm the associated AP of STA according to the AP in associated record and each access parameter;
Particularly; In contingency table, include under the situation of associated record of at least one STA; The difference of corresponding AP reception signal strength values in the reception signal strength values of confirming each AP in every associated record of this STA respectively and each access parameter; Exist the corresponding difference of associated record to be under the situation within the predetermined error range, the associated AP that writes down in this associated record is confirmed as the associated AP of STA, handle proceeding to step 5;
The difference corresponding at each bar associated record all is not under the situation within the predetermined error range, receives signal strength values based on predetermined access strategy and the AP in each access parameter, confirms the associated AP of STA, promptly handles proceeding to step 3;
Step 3, AC receive signal strength values according to predetermined access strategy and the AP in each access parameter, confirm the associated AP of STA;
Particularly; Access strategy comprises: with the AP in each access parameter receive signal strength values more than or equal to the AP of predetermined minimum signal strength threshold value as optional AP (, showing a little less than the signal strength signal intensity of STA to being not enough to communicate) if the AP in each access parameter receives signal strength values less than predetermined minimum signal strength threshold value; In the access parameter of each optional AP; Determine the maximum AP of numerical value and receive signal strength values; With receiving AP in the access parameter of other AP the AP of signal strength values and receive signal strength values and this maximum AP and receive AP that signal strength values differs the AP that is scheduled to signal threshold value to be selected (for example 5dBm) and have this maximum AP reception signal strength values except that having this maximum AP among the optional AP jointly as AP to be selected; According to each AP of record in advance the number of related STA, in AP to be selected with AP the AP of related STA minimum number confirm as the associated AP of STA; Further, in AP to be selected, exist at least two AP related STA number equate and minimum situation under, in these at least two AP, AP in the access parameter is received the associated AP that the maximum AP of signal strength values confirms as STA; Then,
AC is brought into the reception of the AP in each access parameter signal strength values and carries out analysis and judgement in the access strategy, for STA confirms associated AP;
Step 4, AC be the newly-increased current associated record of STA in contingency table, the sign of reception signal strength values when promptly AC write down AP reception probe requests thereby in the sign, each access parameter of STA in contingency table and the associated AP of determined STA; The associated record that STA is current, can be STA follow-up insert among this WLAN once more or in this WLAN roaming the time confirm that associated AP or roaming AP provide reference;
Step 5, AC indicate determined associated AP to send probe response to STA.
In above-mentioned processing procedure; AC receives at least two access parameters to same STA that AP reports; In access parameter, all do not comprise under the situation of the sign that AP is associated with STA; Showing that this STA is current is not linked among the WLAN as yet; This moment, AC at first searched in advance the associated record whether STA is arranged in the contingency table of setting up according to the sign of STA, if exist the associated record of STA to show that then this STA once was linked among this WLAN, and the difference of corresponding AP reception signal strength values in the reception signal strength values of confirming each AP in every associated record of this STA this moment respectively and each access parameter; Exist the corresponding difference of an associated record to be under the situation within the predetermined error range; Explain that STA is once to be linked into (for example, STA is in the fixing scene for a long time, all is linked in the same associated AP) among the WLAN at every turn in the identical or similar scene; This moment, AC need not to STA confirms associated AP again, and the associated AP that the associated AP of the STA that is write down in this associated record is confirmed as among the current WLAN of being linked into of STA gets final product; If the difference that each bar associated record is corresponding all is not within the predetermined error range; Showing then that STA is current (for example is linked among the WLAN with difference access scene in the past; STA has left long-term residing fixed scene; And currently neither insert WLAN with the scene that once inserted or the scene of roaming once), perhaps do not exist the associated record of STA to show that then STA be not linked among this WLAN in the contingency table, this moment, AC was that STA confirms associated AP according to predetermined access strategy.
Thus it is clear that,, can improve STA and be linked into the access efficiency among the WLAN according to above-mentioned processing procedure.At first; AC can through inquiry contingency table and simple numerical value transport operation identify STA current whether with identical or similar scene access WLAN once; If there is identical or similar scene; Then the associated AP in the identical or similar scene that is write down is confirmed as the associated AP of the current access of STA WLAN; Can be efficiently, reliably for STA confirms associated AP, even avoid STA in the prior art to be in the fixing scene the low problem of access efficiency that when each WLAN of access, still need insert decision-making and cause.And AC sets up associated record after the associated AP of at every turn having confirmed STA, can reference be provided for follow-up access decision-making.In addition; The access strategy that the embodiment of the invention provides; At first in optional AP, confirm signal preferably several AP be AP to be selected; The reception signal strength values of AP to be selected in predetermined scope, also be the signal of each AP to be selected than the signal effect of non-AP to be selected good and for STA reception similar, and in AP to be selected, select the AP of load minimum (also being the minimum number of the STA of AP association); Can reach the best and effect of load balance of signal; Preferably distributing radio resource, realize the load balancing of AP, can avoid that STA at first selects the good AP of signal to cause related failure easily in the prior art, and carry out repeatedly related after the failure and too much occupied bandwidth resource, problem that access efficiency is low.
(2) confirm roaming AP
Step 1, AC are according to the sign of STA; In the contingency table of setting up in advance, search the associated record that whether has STA, under the situation of the associated record that has at least two STA, handle proceeding to step 2; Under the situation of the associated record that only has a STA, handle proceeding to step 3; Content recorded as above repeats no more here in the contingency table;
Step 2, receive signal strength values, confirm the roaming AP of STA according to the AP in associated record and each access parameter;
Particularly, AC confirms the current associated AP of STA according to the sign of STA in contingency table; In the concrete process that realizes; Can in contingency table, embody the temporal information that generates each bar associated record; For example, through the time of record generation associated record in associated record, perhaps embody the time of producing each bar associated record through method according to time-sequencing; Confirm that according to temporal information which bar associated record is the current associated record of STA, and the current associated AP of definite STA; Also can show the associated AP that STA is current through other method;
AC includes in contingency table under the situation of associated record of two STA at least; The difference of corresponding AP reception signal strength values in the reception signal strength values of confirming each AP in every associated record of STA respectively and each access parameter; Exist the corresponding difference of associated record to be within the predetermined error range and the associated AP in this associated record is not under the situation of the current associated AP of STA; The associated AP that writes down in this associated record is confirmed as the roaming AP of STA; Processing proceeds to step 5; If exist the corresponding difference of associated record to be within the predetermined error range and the associated AP in this associated record is under the situation of the current associated AP of STA, handle and return step 301;
The difference corresponding at each bar associated record all is not under the situation within the predetermined error range, confirms promptly to handle the roaming AP of STA and proceed to step 3 according to predetermined roaming strategy and the AP received signal intensity level in each access parameter;
Step 3, receive signal strength values, confirm the roaming AP of STA based on predetermined roaming strategy and the AP in each access parameter;
Particularly; The roaming strategy comprises: AC confirms that respectively the AP in the access parameter of the AP except that the current associated AP of STA receives the difference of the AP reception signal strength values in the access parameter of the current associated AP of signal strength values and STA; In the corresponding AP of difference of AP, AP in the access parameter is received the roaming AP that the maximum AP of signal strength values confirms as STA more than or equal to predetermined roaming signal strength threshold; AP reception signal strength values equates and is maximum in the access parameter of at least two AP, and then these at least two AP are roaming AP;
Then; AC is brought into the AP received signal intensity level in each access parameter in the roaming strategy; AP received signal intensity level in each access parameter meets under the situation of roaming strategy, according to the roaming AP of the definite STA of roaming strategy, handles proceeding to step 4; Under the situation that does not meet the roaming strategy, handle and return step 1;
Step 4, AC write down the sign of the roaming AP of reception signal strength values and determined STA when AP receives probe requests thereby in the sign, each access parameter of STA in contingency table;
Step 5, the determined roaming AP of AC indication send probe response to STA;
Particularly; AC indication roaming AP improves the power and the frequency of replying probe response; And the current associated AP of indication STA reduces the frequency of replying probe response; Also be that AC indicates determined roaming AP in the answer cycle of a probe response, send at least two probe responses with predetermined transmitted power to STA, predetermined transmitted power is greater than the signal transmitting power of the current associated AP of STA; Further, the AP of the current association of AC indication STA sends a probe response to STA in the answer cycle of at least two probe responses;
STA confirms to receive the maximum AP of signal strength values the roaming AP that be reality according to the reception signal strength signal intensity of probe response from roaming AP that receives, and STA is treated to prior art.
In above-mentioned processing procedure; The access parameter that AC reports based at least two AP to same STA; In access parameter, comprise under the situation of the sign that AP is associated with STA; Showing that this STA is current has been linked among the WLAN; This moment, AC judged based on the reception of the AP in each access parameter signal strength values whether STA is in roaming state; At first AC searches the associated record that whether has STA in the contingency table based on the sign of STA, under the situation that has two associated records (wherein the record that associated record is the current association of STA records the current associated AP of STA in this record), shows that this STA once was linked among this WLAN at least perhaps once roaming among the WLAN; The reception signal strength values of confirming each AP in every associated record of STA respectively and the AP of corresponding AP in access parameter receive the difference of signal strength values; If exist the corresponding difference of associated record to be within the predetermined error range and the associated AP in this associated record is not under the situation of the current associated AP of STA, show that STA roams, do not start the roaming decision-making; If exist the corresponding difference of associated record to be within the predetermined error range and the associated AP in this associated record is not under the situation of the current associated AP of STA; Show this STA once with similar or identical scene relating to other AP; At this moment, AC confirms as the associated AP that writes down in this associated record the roaming AP of STA; If the difference that each bar associated record is corresponding all is not within the predetermined error range, show that then the current roaming scence of STA does not match with once related scene, should roam AP this moment based on the roaming strategy for STA is definite.And; In contingency table, only have under the situation of associated record of a STA; Show that this associated record is the record of the current association of STA; Also be STA not with other the scene relating except that current scene in WLAN, at this moment, should receive signal strength values according to the AP in each access parameter and confirm to roam AP for STA with the roaming strategy.In the roaming strategy, be that STA confirms roaming AP according to the best principle of signal.And the determined roaming of AC indication AP improves the transmitted power and the frequency of replying probe response, and the current associated AP of indication STA reduces the frequency of replying probe response.
Thus it is clear that,, can improve the roaming efficient of STA according to above-mentioned processing procedure.At first; AC can through inquiry contingency table and simple numerical value transport scene that operation identifies the STA current roaming whether with once related scene identical or similar (being the associated record of at least two STA of existence in the contingency table); If there is identical or similar situation; Then the associated AP in the identical or similar scene that is write down is confirmed as the current roaming AP of STA, can be the definite roaming of STA AP efficiently, reliably, and; The determined roaming of AC indication AP improves the transmitted power and the frequency of replying probe response; The current associated AP of indication STA reduces the frequency of replying probe response, can make STA perceive roaming AP more significantly, thereby guiding STA is associated with on the roaming AP; Thereby can avoid STA in the prior art to trigger the inefficient problem of roaming that the roaming decision-making causes, can reduce the problem that goes offline in the STA roam procedure significantly through receiving beancon message or detection response message.If not existing with the identical or similar scene of the scene of STA current roaming in the associated record of STA (is the associated record that only has a STA in the contingency table; Also promptly this associated record is the current associated record of STA); Be that STA confirms roaming AP then, can avoid the problem that STA goes offline easily in the prior art in roam procedure according to the best principle of signal.
Based on identical inventive concept; The embodiment of the invention also provides a kind of access device of WLAN; Fig. 4 shows the structured flowchart of the access device of the WLAN that the embodiment of the invention provides; As shown in Figure 4, this device comprises: receiver module 41, judge module 42, AM access module 43 and roam module 44.
Receiver module 41; Receive access parameter respectively in the section at the fixed time to same site STA from least two access point AP; Each access parameter be each AP based on from the same probe requests thereby of STA and definite, access parameter comprises: the sign whether the reception signal strength values when AP receives probe requests thereby and AP and STA related;
Judge module 42 is connected to receiver module 41, judges in each access parameter that receiver module 41 receives whether comprise the sign that AP is associated with STA;
AM access module 43; Be connected to judge module 42; Being used for judging each access parameter at judge module 42 does not all comprise under the situation of the sign that AP is associated with STA; Receive signal strength values according to the AP in each access parameter and confirm the associated AP of STA, and indicate determined associated AP to send probe response to STA;
Particularly, AM access module 43 is searched the associated record that whether has STA based on the sign of STA in the contingency table of setting up in advance; Under the situation of the associated record that has STA; Receive signal strength values based on the AP in associated record and each access parameter, confirm the associated AP of STA, under the situation of the associated record that does not have STA; Receive signal strength values based on predetermined access strategy and the AP in each access parameter, confirm the associated AP of STA;
Wherein, AM access module 43 receives signal strength values according to the AP in associated record and each access parameter; Confirm the associated AP of STA; Specifically comprise: in contingency table, include under the situation of associated record of at least one STA; Corresponding AP receives the difference of signal strength values in the reception signal strength values of confirming each AP in every associated record of STA respectively and each access parameter, exists the difference of an associated record correspondence to be under the situation within the predetermined error range, the associated AP that writes down in this associated record is confirmed as the associated AP of STA; The difference corresponding at each bar associated record all is not under the situation within the predetermined error range, confirms the associated AP of STA according to predetermined access strategy and the AP reception signal strength values in each access parameter.
AM access module 43 is according to predetermined access strategy and the AP received signal intensity level in each access parameter; Confirm the associated AP of STA, specifically comprise: with the AP received signal intensity level in each access parameter more than or equal to the AP of predetermined minimum signal strength threshold value as optional AP; In the access parameter of each optional AP; Determine the maximum AP received signal intensity level of numerical value; The AP that AP received signal intensity level in the access parameter of AP except that the AP with this maximum AP received signal intensity level among the optional AP and this maximum AP received signal intensity level is differed the AP of predetermined signal threshold value to be selected and have this maximum AP received signal intensity level is jointly as AP to be selected; According to each AP of record in advance the number of related STA, in AP to be selected with AP the AP of related STA minimum number confirm as the associated AP of STA.Exist at least two AP related STA number equate and minimum situation under, in these at least two AP, AP in the access parameter is received the associated AP that the maximum AP of signal strength values confirms as STA.
The sign of the associated AP of reception signal strength values and the determined STA of AM access module 43 when also AP receives the same probe requests thereby of said STA in the sign, each access parameter of record STA in contingency table.
Roam module 44; Be connected to judge module 42; Be used for comprising under the situation of the sign that AP is associated with STA at access parameter in judge module 42 judgements; Receive signal strength values according to the AP in each access parameter and confirm the roaming AP of STA, and indicate determined roaming AP to send probe response to STA.
Particularly, roam module 44 is searched the associated record that whether has STA according to the sign of STA in the contingency table of setting up in advance; Under the situation of the associated record that has at least two STA; Receive signal strength values according to the AP in associated record and each access parameter, confirm the roaming AP of STA, under the situation of the associated record that only has a STA; Receive signal strength values according to predetermined roaming strategy and the AP in each access parameter, confirm the roaming AP of STA;
Wherein, roam module 44 receives signal strength values according to the AP in associated record and each access parameter, confirms the roaming AP of STA, specifically comprises: according to the sign of STA, in contingency table, confirm the current associated AP of STA; In contingency table, include under the situation of associated record of at least two STA; The difference of corresponding AP reception signal strength values in the reception signal strength values of confirming each AP in every associated record of STA respectively and each access parameter; Exist the corresponding difference of associated record to be within the predetermined error range and the associated AP in this associated record is not under the situation of the current associated AP of STA; The associated AP that writes down in this associated record is confirmed as the roaming AP of STA; The difference corresponding at each bar associated record all is not under the situation within the predetermined error range, confirms the roaming AP of STA according to predetermined roaming strategy and the AP reception signal strength values in each access parameter;
Roam module 44 receives signal strength values according to predetermined roaming strategy and the AP in each access parameter; Confirm the roaming AP of STA; Specifically comprise: confirm that respectively AP in the access parameter of the AP except that the current associated AP of STA receives the difference of the AP reception signal strength values in the access parameter of the current associated AP of signal strength values and STA; In the corresponding AP of difference of AP, AP in the access parameter is received the roaming AP that the maximum AP of signal strength values confirms as STA more than or equal to predetermined roaming signal strength threshold.
The sign of reception signal strength values when roam module 44 also is used in the sign of contingency table record STA, each access parameter AP and receives the same probe requests thereby of STA and the roaming AP of determined STA.
Roam module 44 also is used to indicate determined roaming AP in the answer cycle of a probe response, sends at least two probe responses with predetermined transmitted power to STA, and predetermined transmitted power is greater than the signal transmitting power of the current associated AP of STA; Indicate the current associated AP of STA in the answer cycle of at least two probe responses, send a probe response to STA.
According to device as shown in Figure 4; Also can be efficiently, confirm associated AP or roaming AP for STA reliably; Can avoid among the WLAN of existing thin AP model, insert decision-making and roaming decision-making and the STA access efficiency that causes is low and roam inefficient problem by STA.
The embodiment of the invention also provides a kind of network equipment, and this network equipment comprises the access device of WLAN as shown in Figure 4, and preferably, this network equipment is AC.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, belong within the scope of claim of the present invention and equivalent technologies thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.

Claims (25)

1.一种无线局域网WLAN的接入方法，其特征在于，包括：1. an access method of a wireless local area network WLAN, characterized in that, comprising: 无线集成控制器AC在预定时间段内分别接收来自至少两个接入点AP的对同一个站点STA的接入参数，各个所述接入参数是各个所述AP根据来自所述STA的同一个探测请求而确定的，所述接入参数包括：所述AP接收所述探测请求时的接收信号强度值和所述AP与所述STA是否关联的标识；The wireless integrated controller AC respectively receives access parameters to the same station STA from at least two access points AP within a predetermined period of time, and each of the access parameters is each AP according to the same STA from the STA. The access parameters include: the received signal strength value when the AP receives the probe request and the identifier of whether the AP is associated with the STA; 所述AC在判断出各个接入参数中均不包括AP与所述STA相关联的标识的情况下，根据各个接入参数中的AP接收信号强度值确定所述STA的关联AP，并指示所确定的关联AP向所述STA发送探测响应；When the AC determines that none of the access parameters includes the identifier associated with the AP and the STA, it determines the associated AP of the STA according to the received signal strength value of the AP in each access parameter, and indicates the AP associated with the STA. The determined associated AP sends a probe response to the STA; 所述AC在判读出所述接入参数中包括AP与所述STA相关联的标识的情况下，根据各个接入参数中的AP接收信号强度值确定所述STA的漫游AP，并指示所确定的漫游AP向所述STA发送探测响应。The AC determines the roaming AP of the STA according to the AP received signal strength value in each access parameter, and indicates the determined The roaming AP sends a probe response to the STA. 2.根据权利要求1所述的方法，其特征在于，所述接入参数中还包括所述STA的标识；2. The method according to claim 1, wherein the access parameter further includes the STA identifier; 根据各个接入参数中的AP接收信号强度值确定所述STA的关联AP，具体包括：所述AC根据所述STA的标识，在预先建立的关联表中查找是否存在所述STA的关联记录，在存在所述STA的关联记录的情况下，根据所述关联记录以及各个接入参数中的AP接收信号强度值，确定所述STA的关联AP，在不存在所述STA的关联记录的情况下，根据预定的接入策略和各个接入参数中的AP接收信号强度值，确定所述STA的关联AP；Determining the associated AP of the STA according to the AP received signal strength value in each access parameter, specifically includes: the AC searches a pre-established association table for an association record of the STA according to the identifier of the STA, If there is an association record of the STA, determine the associated AP of the STA according to the association record and the AP received signal strength value in each access parameter; if there is no association record of the STA , determining an associated AP of the STA according to a predetermined access policy and an AP received signal strength value in each access parameter; 其中，所述关联表中记录有接入WLAN的各个STA的关联记录，一条所述关联记录中包括一个STA的标识、各个AP接收到该STA广播的同一个探测请求时的接收信号强度值以及该STA的关联AP的标识。Wherein, the association table records the association records of each STA accessing the WLAN, and one of the association records includes the identifier of a STA, the received signal strength value when each AP receives the same detection request broadcast by the STA, and The ID of the associated AP of the STA. 3.根据权利要求2所述的方法，其特征在于，根据所述关联记录以及各个接入参数中的AP接收信号强度值，确定所述STA的关联AP，具体包括：3. The method according to claim 2, wherein, according to the association record and the AP received signal strength value in each access parameter, the associated AP of the STA is determined, specifically comprising: 在所述关联表中包括有至少一条所述STA的关联记录的情况下，分别确定所述STA的每条关联记录中各个AP的接收信号强度值与各个接入参数中相应的AP接收信号强度值的差值，存在一条关联记录对应的差值处于预定的误差范围之内的情况下，将该关联记录中记录的关联AP确定为所述STA的关联AP，在各条关联记录对应的差值均不处于所述预定的误差范围之内的情况下，根据预定的接入策略和各个接入参数中的AP接收信号强度值确定所述STA的关联AP。In the case that the association table includes at least one association record of the STA, respectively determine the received signal strength value of each AP in each association record of the STA and the corresponding AP received signal strength in each access parameter If there is an associated record whose corresponding difference is within the predetermined error range, the associated AP recorded in the associated record is determined as the associated AP of the STA, and the difference corresponding to each associated record If none of the values is within the predetermined error range, determine the associated AP of the STA according to a predetermined access policy and the AP received signal strength value in each access parameter. 4.根据权利要求2或3所述的方法，其特征在于，所述预定的接入策略，具体包括：4. The method according to claim 2 or 3, wherein the predetermined access strategy specifically includes: 将各个接入参数中的AP接收信号强度值大于或等于预定最小信号强度阈值的AP作为可选AP；在各个可选AP的接入参数中，确定出数值最大的AP接收信号强度值，将可选AP中除具有该最大的AP接收信号强度值的AP以外的AP的接入参数中的AP接收信号强度值与该最大的AP接收信号强度值相差预定待选信号阈值的AP以及具有该最大的AP接收信号强度值的AP共同作为待选AP，根据预先记录的各个AP所关联的STA的数目，在所述待选AP中将AP所关联的STA数目最少的AP确定为所述STA的关联AP。In each access parameter, the AP whose received signal strength value is greater than or equal to the predetermined minimum signal strength threshold is regarded as an optional AP; among the access parameters of each optional AP, the AP received signal strength value with the largest value is determined, and the Among the selectable APs, APs whose AP received signal strength values in the access parameters other than the AP with the largest AP received signal strength value differ from the largest AP received signal strength value by a predetermined candidate signal threshold and APs with the The AP with the largest AP received signal strength value is collectively used as a candidate AP, and according to the pre-recorded number of STAs associated with each AP, among the candidate APs, the AP with the least number of STAs associated with the AP is determined as the STA The associated AP. 5.根据权利要求4所述的方法，其特征在于，预定的接入策略还包括：5. The method according to claim 4, wherein the predetermined access policy further comprises: 在所述待选AP中，存在至少两个AP所关联的STA数目相等且最少的情况下，在该至少两个AP中，将接入参数中AP接收信号强度值最大的AP确定为所述STA的关联AP。Among the APs to be selected, if there are at least two APs associated with the same number of STAs and the least number of APs, among the at least two APs, the AP with the largest AP received signal strength value in the access parameters is determined as the AP associated with the STA. 6.根据权利要求5所述的方法，其特征在于，所述方法还包括：6. The method according to claim 5, further comprising: 在所述关联表中记录所述STA的标识、各个接入参数中AP接收所述STA的同一个探测请求时的接收信号强度值和所确定的所述STA的关联AP的标识。Record the identifier of the STA, the received signal strength value when the AP receives the same probe request from the STA in each access parameter, and the determined identifier of the associated AP of the STA in the association table. 7.根据权利要求1所述的方法，其特征在于，所述接入参数中还包括所述STA的标识；7. The method according to claim 1, wherein the access parameter further includes the STA identifier; 根据各个接入参数中的AP接收信号强度值确定所述STA的漫游AP，具体包括：所述AC根据所述STA的标识，在预先建立的关联表中查找是否存在所述STA的关联记录，在存在至少两条所述STA的关联记录的情况下，根据所述关联记录以及各个接入参数中的AP接收信号强度值，确定所述STA的漫游AP，在仅存在一条所述STA的关联记录的情况下，根据预定的漫游策略和各个接入参数中的AP接收信号强度值，确定所述STA的漫游AP；Determining the roaming AP of the STA according to the AP received signal strength value in each access parameter, specifically includes: the AC searches a pre-established association table for an association record of the STA according to the identity of the STA, If there are at least two association records of the STA, determine the roaming AP of the STA according to the association records and the AP received signal strength value in each access parameter, and if there is only one association record of the STA In the case of recording, determine the roaming AP of the STA according to the predetermined roaming policy and the AP received signal strength value in each access parameter; 其中，所述关联表中记录有接入WLAN的各个STA的关联记录，一条所述关联记录中包括一个STA的标识、各个AP接收到该STA广播的同一个探测请求时的接收信号强度值以及该STA的关联AP的标识。Wherein, the association table records the association records of each STA accessing the WLAN, and one of the association records includes the identifier of a STA, the received signal strength value when each AP receives the same detection request broadcast by the STA, and The ID of the associated AP of the STA. 8.根据权利要求7所述的方法，其特征在于，根据所述关联记录以及各个接入参数中的AP的接收信号强度值，确定所述STA的漫游AP，具体包括：8. The method according to claim 7, wherein the roaming AP of the STA is determined according to the association record and the received signal strength value of the AP in each access parameter, specifically comprising: 所述AC根据所述STA的标识，在所述关联表中确定所述STA当前的关联AP；The AC determines the current associated AP of the STA in the association table according to the identifier of the STA; 在所述关联表中包括有至少两条所述STA的关联记录的情况下，分别确定所述STA的每条关联记录中各个AP的接收信号强度值与各个接入参数中相应的AP接收信号强度值的差值，存在一条关联记录对应的差值处于预定的误差范围之内、且该关联记录中的关联AP不是所述STA当前的关联AP的情况下，将该关联记录中记录的关联AP确定为所述STA的漫游AP，在各条关联记录对应的差值均不处于预定的误差范围之内的情况下，根据预定的漫游策略和各个接入参数中的AP接收信号强度值确定所述STA的漫游AP。In the case that the association table includes at least two association records of the STA, respectively determine the received signal strength value of each AP in each association record of the STA and the corresponding AP received signal in each access parameter If there is an association record whose corresponding difference is within the predetermined error range, and the associated AP in the association record is not the current associated AP of the STA, the association record recorded in the association record The AP is determined to be the roaming AP of the STA, and if the difference values corresponding to each associated record are not within the predetermined error range, it is determined according to the predetermined roaming policy and the AP received signal strength value in each access parameter The roaming AP of the STA. 9.根据权利要求8所述的方法，其特征在于，所述预定的漫游策略，具体包括：9. The method according to claim 8, wherein the predetermined roaming policy specifically includes: 所述AC分别确定除所述STA当前的关联AP之外的AP的接入参数中的AP接收信号强度值与所述STA当前的关联AP的接入参数中的AP接收信号强度值的差值，在AP对应的差值大于或等于预定的漫游信号强度阈值的AP中，将接入参数中AP接收信号强度值最大的AP确定为所述STA的漫游AP。The AC respectively determines the difference between the AP received signal strength value in the access parameters of APs other than the STA's current associated AP and the AP received signal strength value in the access parameters of the STA's current associated AP Among the APs whose corresponding difference is greater than or equal to a predetermined roaming signal strength threshold, determine the AP with the largest AP received signal strength value in the access parameters as the roaming AP of the STA. 10.根据权利要求9所述的方法，其特征在于，所述方法还包括：10. The method according to claim 9, further comprising: 在所述关联表中记录所述STA的标识、各个接入参数中AP接收所述STA的同一个探测请求时的接收信号强度值和所确定的所述STA的漫游AP的标识。In the association table, record the identifier of the STA, the received signal strength value when the AP receives the same probe request from the STA in each access parameter, and the determined identifier of the roaming AP of the STA. 11.根据权利要求9所述的方法，其特征在于，指示所确定的漫游AP向所述STA发送探测响应，具体包括：11. The method according to claim 9, wherein instructing the determined roaming AP to send a probe response to the STA, specifically comprising: 所述AC指示所确定的漫游AP在一个探测响应的回复周期内，以预定的发送功率向所述STA发送至少两个探测响应，所述预定的发送功率大于所述STA当前的关联AP的信号发送功率。The AC instructs the determined roaming AP to send at least two probe responses to the STA with a predetermined transmission power within a probe response reply period, and the predetermined transmission power is greater than the current associated AP signal of the STA transmit power. 12.根据权利要求11所述的方法，其特征在于，所述方法还包括：12. The method of claim 11, further comprising: 所述AC指示所述STA当前的关联AP在至少两个探测响应的回复周期内，向所述STA发送一个探测响应。The AC instructs the currently associated AP of the STA to send a probe response to the STA within at least two response periods of the probe response. 13.一种无线局域网WLAN的接入装置，其特征在于，包括：13. An access device for a wireless local area network WLAN, characterized in that it comprises: 接收模块，在预定时间段内分别接收来自至少两个接入点AP的对同一个站点STA的接入参数，各个所述接入参数是各个所述AP根据来自所述STA的同一个探测请求而确定的，所述接入参数包括：所述AP接收所述探测请求时的接收信号强度值和所述AP与所述STA是否关联的标识；The receiving module is configured to respectively receive access parameters from at least two access points AP to the same station STA within a predetermined period of time, and each of the access parameters is each of the APs according to the same probe request from the STA determined, the access parameters include: a received signal strength value when the AP receives the probe request and an identifier of whether the AP is associated with the STA; 判断模块，判断各个接入参数中是否包括AP与所述STA相关联的标识；A judging module, judging whether each access parameter includes an identifier associated with the AP and the STA; 接入模块，用于在所述判断模块判断出各个接入参数中均不包括AP与所述STA相关联的标识的情况下，根据各个接入参数中的AP接收信号强度值确定所述STA的关联AP，并指示所确定的关联AP向所述STA发送探测响应；An access module, configured to determine the STA according to the received signal strength value of the AP in each access parameter when the judging module judges that none of the access parameters includes the identifier associated with the AP and the STA the associated AP, and instruct the determined associated AP to send a probe response to the STA; 漫游模块，用于在所述判断模块判断出在接入参数中包括AP与所述STA相关联的标识的情况下，根据各个接入参数中的AP接收信号强度值确定所述STA的漫游AP，并指示所确定的漫游AP向所述STA发送探测响应。A roaming module, configured to determine the roaming AP of the STA according to the received signal strength value of the AP in each access parameter when the judging module judges that the access parameter includes an identifier associated with the AP and the STA , and instruct the determined roaming AP to send a probe response to the STA. 14.根据权利要求13所述的装置，其特征在于，所述接入参数中还包括所述STA的标识；则，14. The device according to claim 13, wherein the access parameter further includes the STA identifier; then, 所述接入模块，具体用于：根据所述STA的标识，在预先建立的关联表中查找是否存在所述STA的关联记录，在存在所述STA的关联记录的情况下，根据所述关联记录以及各个接入参数中的AP接收信号强度值，确定所述STA的关联AP，在不存在所述STA的关联记录的情况下，根据预定的接入策略和各个接入参数中的AP接收信号强度值，确定所述STA的关联AP；The access module is specifically configured to: according to the identifier of the STA, search whether there is an association record of the STA in a pre-established association table, and if there is an association record of the STA, according to the association record record and the AP received signal strength value in each access parameter, determine the associated AP of the STA, and if there is no associated record of the STA, receive the The signal strength value determines the associated AP of the STA; 其中，所述关联表中记录有接入WLAN的各个STA的关联记录，一条所述关联记录中包括一个STA的标识、各个AP接收到该STA广播的同一个探测请求时的接收信号强度值以及该STA的关联AP的标识。Wherein, the association table records the association records of each STA accessing the WLAN, and one of the association records includes the identifier of a STA, the received signal strength value when each AP receives the same detection request broadcast by the STA, and The ID of the associated AP of the STA. 15.根据权利要求14所述的装置，其特征在于，所述接入模块，具体用于：15. The device according to claim 14, wherein the access module is specifically used for: 在所述关联表中包括有至少一条所述STA的关联记录的情况下，分别确定所述STA的每条关联记录中各个AP的接收信号强度值与各个接入参数中相应的AP接收信号强度值的差值，存在一条关联记录对应的差值处于预定的误差范围之内的情况下，将该关联记录中记录的关联AP确定为所述STA的关联AP，在各条关联记录对应的差值均不处于所述预定的误差范围之内的情况下，根据预定的接入策略和各个接入参数中的AP接收信号强度值确定所述STA的关联AP。In the case that the association table includes at least one association record of the STA, respectively determine the received signal strength value of each AP in each association record of the STA and the corresponding AP received signal strength in each access parameter If there is an associated record whose corresponding difference is within the predetermined error range, the associated AP recorded in the associated record is determined as the associated AP of the STA, and the difference corresponding to each associated record If none of the values is within the predetermined error range, determine the associated AP of the STA according to a predetermined access policy and the AP received signal strength value in each access parameter. 16.根据权利要求14或15所述的装置，其特征在于，所述接入模块，具体用于：16. The device according to claim 14 or 15, wherein the access module is specifically used for: 将各个接入参数中的AP接收信号强度值大于或等于预定最小信号强度阈值的AP作为可选AP；在各个可选AP的接入参数中，确定出数值最大的AP接收信号强度值，将可选AP中除具有该最大的AP接收信号强度值的AP以外的AP的接入参数中的AP接收信号强度值与该最大的AP接收信号强度值相差预定待选信号阈值的AP以及具有该最大的AP接收信号强度值的AP共同作为待选AP，根据预先记录的各个AP所关联的STA的数目，在所述待选AP中将AP所关联的STA数目最少的AP确定为所述STA的关联AP。In each access parameter, the AP whose received signal strength value is greater than or equal to the predetermined minimum signal strength threshold is regarded as an optional AP; among the access parameters of each optional AP, the AP received signal strength value with the largest value is determined, and the Among the selectable APs, APs whose AP received signal strength values in the access parameters other than the AP with the largest AP received signal strength value differ from the largest AP received signal strength value by a predetermined candidate signal threshold and APs with the The AP with the largest AP received signal strength value is collectively used as a candidate AP, and according to the pre-recorded number of STAs associated with each AP, among the candidate APs, the AP with the least number of STAs associated with the AP is determined as the STA The associated AP. 17.根据权利要求16所述的装置，其特征在于，所述接入模块，还用于：17. The device according to claim 16, wherein the access module is also used for: 在所述待选AP中，存在至少两个AP所关联的STA数目相等且最少的情况下，在该至少两个AP中，将接入参数中AP接收信号强度值最大的AP确定为所述STA的关联AP。Among the APs to be selected, if there are at least two APs associated with the same number of STAs and the least number of APs, among the at least two APs, the AP with the largest AP received signal strength value in the access parameters is determined as the AP associated with the STA. 18.根据权利要求17所述的装置，其特征在于，所述接入模块，还用于：18. The device according to claim 17, wherein the access module is also used for: 在所述关联表中记录所述STA的标识、各个接入参数中AP接收所述STA的同一个探测请求时的接收信号强度值和所确定的所述STA的关联AP的标识。Record the identifier of the STA, the received signal strength value when the AP receives the same probe request from the STA in each access parameter, and the determined identifier of the associated AP of the STA in the association table. 19.根据权利要求13所述的装置，其特征在于，所述接入参数中还包括所述STA的标识；则，19. The device according to claim 13, wherein the access parameter further includes the STA identifier; then, 所述漫游模块，具体用于：根据所述STA的标识，在预先建立的关联表中查找是否存在所述STA的关联记录，在存在至少两天所述STA的关联记录的情况下，根据所述关联记录以及各个接入参数中的AP接收信号强度值，确定所述STA的漫游AP，在仅存在一条所述STA的关联记录的情况下，根据预定的漫游策略和各个接入参数中的AP接收信号强度值，确定所述STA的漫游AP；The roaming module is specifically configured to: look up whether there is an association record of the STA in a pre-established association table according to the identifier of the STA, and if there are at least two days of association records of the STA, according to the According to the above association record and the AP received signal strength value in each access parameter, determine the roaming AP of the STA, if there is only one association record of the STA, according to the predetermined roaming policy and each access parameter The AP receives the signal strength value, and determines the roaming AP of the STA; 其中，所述关联表中记录有接入WLAN的各个STA的关联记录，一条所述关联记录中包括一个STA的标识、各个AP接收到该STA广播的同一个探测请求时的接收信号强度值以及该STA的关联AP的标识。Wherein, the association table records the association records of each STA accessing the WLAN, and one of the association records includes an identifier of a STA, the received signal strength value when each AP receives the same detection request broadcast by the STA, and The ID of the associated AP of the STA. 20.根据权利要求19所述的装置，其特征在于，所述漫游模块，具体用于：20. The device according to claim 19, wherein the roaming module is specifically used for: 根据所述STA的标识，在所述关联表中确定所述STA当前的关联AP；According to the identifier of the STA, determine the current associated AP of the STA in the association table; 在所述关联表中包括有至少两条所述STA的关联记录的情况下，分别确定所述STA的每条关联记录中各个AP的接收信号强度值与各个接入参数中相应的AP接收信号强度值的差值，存在一条关联记录对应的差值处于预定的误差范围之内、且该关联记录中的关联AP不是所述STA当前的关联AP的情况下，将该关联记录中记录的关联AP确定为所述STA的漫游AP，在各条关联记录对应的差值均不处于预定的误差范围之内的情况下，根据预定的漫游策略和各个接入参数中的AP接收信号强度值确定所述STA的漫游AP。In the case that the association table includes at least two association records of the STA, respectively determine the received signal strength value of each AP in each association record of the STA and the corresponding AP received signal in each access parameter If there is an association record whose corresponding difference is within the predetermined error range, and the associated AP in the association record is not the current associated AP of the STA, the association record recorded in the association record The AP is determined to be the roaming AP of the STA, and if the difference values corresponding to each associated record are not within the predetermined error range, it is determined according to the predetermined roaming policy and the AP received signal strength value in each access parameter The roaming AP of the STA. 21.根据权利要求20所述的装置，其特征在于，所述漫游模块，具体用于：21. The device according to claim 20, wherein the roaming module is specifically used for: 分别确定除所述STA当前的关联AP之外的AP的接入参数中的AP接收信号强度值与所述STA当前的关联AP的接入参数中的AP接收信号强度值的差值，在AP对应的差值大于或等于预定的漫游信号强度阈值的AP中，将接入参数中AP接收信号强度值最大的AP确定为所述STA的漫游AP。Respectively determine the difference between the AP received signal strength value in the access parameters of APs other than the STA's current associated AP and the AP received signal strength value in the access parameters of the STA's current associated AP. Among the APs whose corresponding difference is greater than or equal to the predetermined roaming signal strength threshold, the AP with the largest AP received signal strength value in the access parameters is determined as the roaming AP of the STA. 22.根据权利要求21所述的装置，其特征在于，所述漫游模块，还用于：22. The device according to claim 21, wherein the roaming module is further used for: 在所述关联表中记录所述STA的标识、各个接入参数中AP接收所述STA的同一个探测请求时的接收信号强度值和所确定的所述STA的漫游AP的标识。In the association table, record the identifier of the STA, the received signal strength value when the AP receives the same probe request from the STA in each access parameter, and the determined identifier of the roaming AP of the STA. 23.根据权利要求21所述的装置，其特征在于，所述漫游模块，具体用于：23. The device according to claim 21, wherein the roaming module is specifically used for: 指示所确定的漫游AP在一个探测响应的回复周期内，以预定的发送功率向所述STA发送至少两个探测响应，所述预定的发送功率大于所述STA当前的关联AP的信号发送功率。Instructing the determined roaming AP to send at least two probe responses to the STA with a predetermined transmission power within a probe response reply period, where the predetermined transmission power is greater than the signal transmission power of the currently associated AP of the STA. 24.根据权利要求23所述的装置，其特征在于，所述漫游模块，还用于：24. The device according to claim 23, wherein the roaming module is further used for: 指示所述STA当前的关联AP在至少两个探测响应的回复周期内，向所述STA发送一个探测响应。Instruct the currently associated AP of the STA to send a probe response to the STA within at least two response periods of the probe response. 25.一种网络设备，其特征在于，包括如权利要求13至24中任一项所述的无线局域网的接入装置。25. A network device, characterized by comprising the wireless local area network access device according to any one of claims 13 to 24.
CN201210317300.3A 2012-08-30 2012-08-30 Access method and device for wireless local area network and network equipment Expired - Fee Related CN102833824B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201210317300.3A CN102833824B (en) 2012-08-30 2012-08-30 Access method and device for wireless local area network and network equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201210317300.3A CN102833824B (en) 2012-08-30 2012-08-30 Access method and device for wireless local area network and network equipment

Publications (2)

Publication Number Publication Date
CN102833824A true CN102833824A (en) 2012-12-19
CN102833824B CN102833824B (en) 2014-12-24

Family

ID=47336727

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201210317300.3A Expired - Fee Related CN102833824B (en) 2012-08-30 2012-08-30 Access method and device for wireless local area network and network equipment

Country Status (1)

Country Link
CN (1) CN102833824B (en)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103078713A (en) * 2013-01-24 2013-05-01 东莞宇龙通信科技有限公司 Communication equipment and data communication method
CN103281754A (en) * 2013-04-25 2013-09-04 深信服网络科技（深圳）有限公司 Local forwarding mode-based wireless access point information acquisition method and device
CN104093190A (en) * 2014-06-16 2014-10-08 北京奇天揽胜科技有限公司 Terminal access method and access system for WLAN system
CN104301957A (en) * 2014-09-25 2015-01-21 杭州华三通信技术有限公司 Method and device for controlling terminal to actively roam
WO2015010253A1 (en) * 2013-07-23 2015-01-29 华为技术有限公司 Data transmission method and apparatus
CN105072613A (en) * 2015-08-04 2015-11-18 成都世纪光合作用科技有限公司 A kind of wireless network system and wireless network access method
CN105075378A (en) * 2013-04-02 2015-11-18 Lg电子株式会社 Method and device for performing access in wireless LAN system
CN105247911A (en) * 2013-03-28 2016-01-13 英国电讯有限公司 Access Point Selection in Wireless Networks
CN106211161A (en) * 2016-06-23 2016-12-07 杭州华三通信技术有限公司 A kind of equipment counter method and device
CN106535155A (en) * 2016-10-14 2017-03-22 上海斐讯数据通信技术有限公司 Method, device and system for performing wireless roaming of wireless terminal
CN107864476A (en) * 2017-11-08 2018-03-30 上海创功通讯技术有限公司 The access authentication method and terminal of a kind of wireless network
CN109862604A (en) * 2019-04-16 2019-06-07 武汉思创易控科技有限公司 A kind of nearest cut-in method, control method, storage medium and AP based on AP
CN111010724A (en) * 2019-12-21 2020-04-14 锐捷网络股份有限公司 Terminal access method and device based on WLAN
CN111491352A (en) * 2020-04-11 2020-08-04 杭州迪普科技股份有限公司 Wireless roaming method and system for mobile terminal
CN111654850A (en) * 2019-03-04 2020-09-11 华为技术有限公司 A wireless local area network roaming method and communication device
CN111726842A (en) * 2020-05-14 2020-09-29 深圳互由科技有限公司 Roaming switching method, electronic device and computer readable storage medium
CN112040470A (en) * 2020-09-14 2020-12-04 普联技术有限公司 Roaming evaluation method, network management equipment and access point equipment
WO2021190069A1 (en) * 2020-03-27 2021-09-30 华为技术有限公司 Roaming guidance method, apparatus and device, storage medium, and system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112566278B (en) * 2020-12-02 2023-05-23 三维通信股份有限公司 Determination method and system of master device, storage medium and electronic device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1601221A1 (en) * 2004-05-29 2005-11-30 Samsung Electronics Co., Ltd. Seamless handoff method in wireless local area network
CN101448336A (en) * 2008-12-23 2009-06-03 杭州华三通信技术有限公司 Control method and system of wireless client terminal roam and wireless access controller
CN101583151A (en) * 2009-07-02 2009-11-18 杭州华三通信技术有限公司 Method of STA roaming in WLAN network and device
CN101801051A (en) * 2010-03-04 2010-08-11 杭州华三通信技术有限公司 Method and equipment for selecting access points (APs)

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1601221A1 (en) * 2004-05-29 2005-11-30 Samsung Electronics Co., Ltd. Seamless handoff method in wireless local area network
CN101448336A (en) * 2008-12-23 2009-06-03 杭州华三通信技术有限公司 Control method and system of wireless client terminal roam and wireless access controller
CN101583151A (en) * 2009-07-02 2009-11-18 杭州华三通信技术有限公司 Method of STA roaming in WLAN network and device
CN101801051A (en) * 2010-03-04 2010-08-11 杭州华三通信技术有限公司 Method and equipment for selecting access points (APs)

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103078713B (en) * 2013-01-24 2015-05-20 东莞宇龙通信科技有限公司 Communication equipment and data communication method
CN103078713A (en) * 2013-01-24 2013-05-01 东莞宇龙通信科技有限公司 Communication equipment and data communication method
CN105247911B (en) * 2013-03-28 2021-06-25 英国电讯有限公司 Management device, method of operating management device, and computer recordable medium
CN105247911A (en) * 2013-03-28 2016-01-13 英国电讯有限公司 Access Point Selection in Wireless Networks
CN105075378B (en) * 2013-04-02 2019-03-26 Lg 电子株式会社 Method and apparatus for performing access in a wireless LAN system
US9980287B2 (en) 2013-04-02 2018-05-22 Lg Electronics Inc. Method and apparatus for access in wireless LAN system
CN105075378A (en) * 2013-04-02 2015-11-18 Lg电子株式会社 Method and device for performing access in wireless LAN system
CN103281754B (en) * 2013-04-25 2017-02-22 深信服网络科技（深圳）有限公司 Local forwarding mode-based wireless access point information acquisition method and device
CN103281754A (en) * 2013-04-25 2013-09-04 深信服网络科技（深圳）有限公司 Local forwarding mode-based wireless access point information acquisition method and device
US9967009B2 (en) 2013-07-23 2018-05-08 Huawei Technologies Co., Ltd Data transmission method and apparatus
WO2015010253A1 (en) * 2013-07-23 2015-01-29 华为技术有限公司 Data transmission method and apparatus
CN104093190A (en) * 2014-06-16 2014-10-08 北京奇天揽胜科技有限公司 Terminal access method and access system for WLAN system
CN104301957B (en) * 2014-09-25 2017-12-15 新华三技术有限公司 A kind of method and device for controlling terminal initiative roaming
CN104301957A (en) * 2014-09-25 2015-01-21 杭州华三通信技术有限公司 Method and device for controlling terminal to actively roam
CN105072613A (en) * 2015-08-04 2015-11-18 成都世纪光合作用科技有限公司 A kind of wireless network system and wireless network access method
CN105072613B (en) * 2015-08-04 2019-01-08 成都世纪光合作用科技有限公司 A kind of Radio Network System and wireless network access method
CN106211161A (en) * 2016-06-23 2016-12-07 杭州华三通信技术有限公司 A kind of equipment counter method and device
CN106535155A (en) * 2016-10-14 2017-03-22 上海斐讯数据通信技术有限公司 Method, device and system for performing wireless roaming of wireless terminal
CN107864476A (en) * 2017-11-08 2018-03-30 上海创功通讯技术有限公司 The access authentication method and terminal of a kind of wireless network
CN111654850A (en) * 2019-03-04 2020-09-11 华为技术有限公司 A wireless local area network roaming method and communication device
US11330420B2 (en) 2019-03-04 2022-05-10 Huawei Technologies Co., Ltd. Wireless local area network roaming method and communications apparatus
CN109862604A (en) * 2019-04-16 2019-06-07 武汉思创易控科技有限公司 A kind of nearest cut-in method, control method, storage medium and AP based on AP
CN109862604B (en) * 2019-04-16 2021-03-23 武汉思创易控科技有限公司 AP-based nearby access method, control method, storage medium and AP
CN111010724A (en) * 2019-12-21 2020-04-14 锐捷网络股份有限公司 Terminal access method and device based on WLAN
WO2021190069A1 (en) * 2020-03-27 2021-09-30 华为技术有限公司 Roaming guidance method, apparatus and device, storage medium, and system
CN111491352A (en) * 2020-04-11 2020-08-04 杭州迪普科技股份有限公司 Wireless roaming method and system for mobile terminal
CN111726842A (en) * 2020-05-14 2020-09-29 深圳互由科技有限公司 Roaming switching method, electronic device and computer readable storage medium
CN112040470A (en) * 2020-09-14 2020-12-04 普联技术有限公司 Roaming evaluation method, network management equipment and access point equipment
CN112040470B (en) * 2020-09-14 2023-08-08 普联技术有限公司 Roaming evaluation method, network management equipment and access point equipment

Also Published As

Publication number Publication date
CN102833824B (en) 2014-12-24

Similar Documents

Publication Publication Date Title
CN102833824A (en) Access method and device for wireless local area network and network equipment
CN107682890B (en) Terminal access control method and device
CN101583151B (en) Method of STA roaming in WLAN network and device
CN105120461B (en) The method and apparatus established for WLAN initial link circuits
EP3130174B1 (en) Method of controlling handover in mobile communication networks and apparatus implementing the method
CN104380809B (en) The selection method and device of access point
US20060291402A1 (en) Apparatus and method for providing enhanced wireless communications
CN108347749B (en) Switching method, user equipment and base station
CN101801051A (en) Method and equipment for selecting access points (APs)
CN103561449A (en) Wireless access method and wireless access point
CN103313306A (en) WLAN load balancing method, device and system
CN104703234A (en) Method and device for access switching in wireless local area network
US20170265126A1 (en) Wireless local area network access point search method, apparatus, and system
WO2018228347A1 (en) Wireless client sta roaming
CN106507444A (en) A kind of method and device of scanning WAP
CN113543273B (en) Audio data transmission method and system
US20160381678A1 (en) Resource allocation method and base station controller
CN110177384B (en) Access method, device, wireless access point and readable storage medium
CN104301957A (en) Method and device for controlling terminal to actively roam
CN106385695B (en) Method and device for sending detection response frame
CN106487583A (en) A kind of method for setting up network connection and LAN system
KR20120070488A (en) Method for controlling access point and apparatus for the same
CN103841625A (en) WLAN access method and WLAN access device
US7606573B1 (en) Wireless switched network
CN106412999A (en) Load balancing method and load balancing system

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
CP01 Change in the name or title of a patent holder
CP01 Change in the name or title of a patent holder

Address after: Cangshan District of Fuzhou City, Fujian province 350002 Jinshan Road No. 618 Garden State Industrial Park 19 floor

Patentee after: RUIJIE NETWORKS Co.,Ltd.

Address before: Cangshan District of Fuzhou City, Fujian province 350002 Jinshan Road No. 618 Garden State Industrial Park 19 floor

Patentee before: Fujian Star-net Ruijie Network Co.,Ltd.

CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20141224