CN105357708B - A kind of website determines the methods, devices and systems of association access point - Google Patents
A kind of website determines the methods, devices and systems of association access point Download PDFInfo
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- CN105357708B CN105357708B CN201510651083.5A CN201510651083A CN105357708B CN 105357708 B CN105357708 B CN 105357708B CN 201510651083 A CN201510651083 A CN 201510651083A CN 105357708 B CN105357708 B CN 105357708B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/08—Testing, supervising or monitoring using real traffic
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/16—Discovering, processing access restriction or access information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/20—Selecting an access point
Abstract
The present invention provides the methods, devices and systems that a kind of website determines association access point, it include: the received signal strength indication value and comprehensive evaluation of station for acquiring access point, comprehensive evaluation includes the outlet bandwidth situation of cpu load degree, the access load of machinery systems of access point and access point；When website selection access point is associated, the first candidates set is filtered out in all access points searched according to the comprehensive evaluation of access point；In the first candidates set, determine that the received signal strength indication value of not all access point is both less than setting value, the second candidates set is then filtered out according to the received signal strength indication value of access point, and in the second candidates set, according to the determining access point with station associate of the comprehensive evaluation of access point.The present invention improves the accuracy for being linked into suitable access point.
Description
Technical field
The present invention relates to method, dresses that wireless local area network technology field more particularly to a kind of website determine association access point
It sets and system.
Background technique
Website (STA, Station) is one in WLAN (WLAN, Wireless Local Area Networks)
As be client, can be the computer equipped with wireless network card, be also possible to the smart phone for having WiFi module, can be movement
, it is also possible to fixation.In wireless environments the process of STA access include: certification STA either with or without permission and access point (AP,
Access Point) establish link；STA can access WLAN；And after STA access wlan network, certification STA can
Access the permission of network.
During STA and AP establish link, when STA passes through beacon (Beacon) frame or probe response (Probe
It response, can be according to) after frame scan to accessible service set identifier (SSID, Service Set Identifier)
The signal strength of the Beacon frame or Probe response frame that receive indicates (RSSI, Received Signal
Strength Indication) select the suitable SSID to be accessed.
But determine that access has the disadvantage that only in accordance with signal strength: not accounting for the cpu load degree of AP, AP
The access load of machinery systems and AP outlet bandwidth situations such as, may result in STA and be linked on one and inappropriate AP.
Summary of the invention
In view of this, can be improved the present invention provides the methods, devices and systems that a kind of website determines association access point
It is linked into the accuracy of suitable access point.
The present invention provides a kind of methods that website determines association access point, comprising: the reception of station for acquiring access point is believed
Number strength indicator value and comprehensive evaluation, the comprehensive evaluation include cpu load degree, the access load of machinery systems of access point and
The outlet bandwidth situation of access point；When website selection access point is associated, searched for according to the comprehensive evaluation of access point
To all access points in filter out the first candidates set；In the first candidates set, determination is not
The received signal strength indication value of all access points is both less than setting value, then is sieved according to the received signal strength indication value of access point
The second candidates set is selected, and in the second candidates set, is determined according to the comprehensive evaluation of access point
With the access point of station associate.
Further, the received signal strength indication value and comprehensive evaluation of the station for acquiring access point, specifically: it stands
The received signal strength indication value and Comprehensive Assessment that point obtains access point by periodically receiving the beacon frame from access point
Value；And/or website, if receiving probing response frame, is rung by sending probe requests thereby frame search association access point from detection
Frame is answered to obtain the received signal strength indication value and comprehensive evaluation of access point.
Further, new field is distinguished in the beacon frame and the probing response frame, and comprehensive evaluation is added
In new field.
Further, the create-rule of the comprehensive evaluation are as follows: if X < XMAXAnd Y < YMAXAnd Z < ZMAX, then M=α (X/
XMAX)+β(Y/YMAX)+γ(Z/ZMAX)；Wherein, α, β, γ are respectively to be greater than 0 and the weighted value less than 1, and alpha+beta+γ=1；X is
The cpu load degree of current collection, XMAXFor CPU maximum load degree, Y is the access load of machinery systems of the access point of current collection,
YMAXFor the maximum access load of machinery systems of access point, Z is the outlet bandwidth situation of the access point of current collection, ZMAXFor access point
Maximum outlet bandwidth situation, M are comprehensive evaluation.
Further, the comprehensive evaluation according to access point filters out the first time in all access points searched
Choosing access point set, specifically: when website selection access point is associated, it can receive signal all and associated can connect
Access point is as candidates；The access point that comprehensive evaluation M=1.0 is deleted in the candidates forms first and waits
Choosing access point set.
Further, the method also includes: in the first candidates set, if it is determined that all access points
Received signal strength indication value be both less than setting value, select the maximum access point of received signal strength indication value as with website
Associated access point.
Further, the received signal strength indication value according to access point filters out the second candidates set,
And in the second candidates set, according to the determining access point with station associate of the comprehensive evaluation of access point, specifically
Are as follows: if the received signal strength indication value of not all access point is both less than setting value in the first candidates set,
It then filters out the access point that received signal strength indication value is greater than the set value and forms the second candidates set, and described the
Two candidates set select the maximum access point of comprehensive evaluation as the access point with station associate.
The present invention also provides a kind of devices that association access point is determined for website, comprising: module is obtained, for obtaining
The received signal strength indication value and comprehensive evaluation of access point；Relating module, for being associated when website selection access point
When, the first candidates set is filtered out in all access points searched according to the comprehensive evaluation of access point；Institute
It states in the first candidates set, determines that the received signal strength indication value of not all access point is both less than setting value, then
The second candidates set is filtered out according to the received signal strength indication value of access point, and in second candidates
Set, according to the determining access point with station associate of the comprehensive evaluation of access point.
Further, the acquisition module, is specifically used for: being obtained by periodically receiving the beacon frame from access point
The received signal strength indication value and comprehensive evaluation of access point；And/or by sending the association access of probe requests thereby frame search
Point obtains the received signal strength indication value of access point from probing response frame and synthesis is commented if receiving probing response frame
Definite value, wherein the beacon frame and the probing response frame distinguish new field, and comprehensive evaluation is added in new field
In.
Further, the relating module, is specifically used for: when website selection access point is associated, can receive all
To signal and can associated access point as candidates；Comprehensive evaluation M=1.0 is deleted in the candidates
Access point, formed the first candidates set；In the first candidates set, if it is determined that all access points
Received signal strength indication value be both less than setting value, select the maximum access point of received signal strength indication value as with website
Associated access point；If the received signal strength indication value of not all access point is all small in the first candidates set
In setting value, then filters out the access point that received signal strength indication value is greater than the set value and forms the second candidates set,
And in the second candidates set, select the maximum access point of comprehensive evaluation as the access point with station associate.
The present invention also provides a kind of systems for determining association access point for website, comprising: access point, for station
Point sends and carries the received signal strength indication value of access point and the beacon frame of comprehensive evaluation and/or probing response frame, institute
State the outlet bandwidth situation that comprehensive evaluation includes cpu load degree, the access load of machinery systems of access point and access point；Website,
For obtaining the received signal strength indication value and comprehensive evaluation of access point from beacon frame and/or probing response frame；Work as station
When point selection access point is associated, first is filtered out in all access points searched according to the comprehensive evaluation of access point
Candidates set；In the first candidates set, determine that the received signal strength of not all access point refers to
Indicating value is both less than setting value, then filters out the second candidates set according to the received signal strength indication value of access point, and
In the second candidates set, according to the determining access point with station associate of the comprehensive evaluation of access point.
Further, described access point new field in the beacon frame and the probing response frame, and synthesis is commented
Definite value is added in new field.
Further, the website, is specifically used for: when website selection access point is associated, can receive letter all
Number and can associated access point as candidates；Connecing for comprehensive evaluation M=1.0 is deleted in the candidates
Access point forms the first candidates set；In the first candidates set, if it is determined that all access points connect
Receive signal strength indication value be both less than setting value, select the maximum access point of received signal strength indication value as with station associate
Access point；If the received signal strength indication value of not all access point is both less than set in the first candidates set
Definite value then filters out the access point that received signal strength indication value is greater than the set value and forms the second candidates set, and
The second candidates set selects the maximum access point of comprehensive evaluation as the access point with station associate.
Compared to the prior art, the beneficial effects of the present invention are: pass through the new field of beacon frame and probing response frame
Comprehensive evaluation is carried, then website can get received signal strength indication value and comprehensive evaluation.Carrying out website selection
Access point it is operation associated when, by the comprehensive access point for determining access of received signal strength indication value and comprehensive evaluation, gram
Variety of problems caused by the access point for determining access only according to received signal strength indication value in the prior art has been taken, thus
Improve the accuracy for being linked into suitable access point.
Detailed description of the invention
Fig. 1 is the flow diagram for the method that website disclosed in this invention determines association access point.
Fig. 2 is the structural schematic diagram of the device disclosed in this invention that association access point is determined for website.
Fig. 3 is the configuration diagram of the system disclosed in this invention that association access point is determined for website.
Specific embodiment
Below with reference to specific embodiment shown in the drawings, the present invention will be described in detail, but these embodiments are simultaneously
The present invention is not limited, structure that those skilled in the art are made according to these embodiments, method or functionally
Transformation is included within the scope of protection of the present invention.
Fig. 1 is the flow diagram for the method that website disclosed in this invention determines association access point.Referring to Fig.1, this hair
Bright method, comprising:
Step 101, website (STA) obtains received signal strength indicator (RSSI) value and Comprehensive Assessment of access point (AP)
Value, which includes the outlet bandwidth situation of cpu load degree, the access load of machinery systems of AP and AP.
In this step, STA can obtain AP's by periodically receiving beacon (Beacon) frame from AP
RSSI value and comprehensive evaluation；STA can also obtain the RSSI value and comprehensive evaluation of AP by search associated AP, such as
STA is by sending probe requests thereby (Probe Request) frame search associated AP, if receiving the probe response from associated AP
(Probe Response) frame then obtains the RSSI value and comprehensive evaluation of AP from Probe Response frame.
Be compared to the prior art, AP increased into the Beacon frame and Probe Response frame that STA is sent it is comprehensive
Close evaluation value parameter, wherein
Increase Comprehensive Assessment value parameter in Beacon frame, specifically:
AP periodically collects the evaluation information of itself, which includes that the access of cpu load degree (X), AP is born
The outlet bandwidth situation (Z) of lotus degree (Y) and AP.Wherein, the period is the period that AP sends Beacon frame, such as is defaulted as
100ms。
AP is generated comprehensive evaluation (M) according to preset rules by information is evaluated, as follows:
If X < XMAXAnd Y < YMAXAnd Z < ZMAX, then M=α (X/XMAX)+β(Y/YMAX)+γ(Z/ZMAX)；
Wherein, α, β, γ are respectively to be greater than 0 and the weighted value less than 1, and alpha+beta+γ=1；X is that the CPU of current collection is negative
Load degree, XMAXFor CPU maximum load degree, Y is the access load of machinery systems of the access point of current collection, YMAXMost for access point
The big access load of machinery systems, Z are the outlet bandwidth situation of the access point of current collection, ZMAXFor the maximum outlet bandwidth feelings of access point
Condition, M are comprehensive evaluation.XMAX、YMAXAnd ZMAXIt can be identical, be also possible to different, such as different types of AP,
XMAX、YMAXAnd ZMAXFor different value.
Such as: X < XMAXAnd Y < YMAXAnd Z < ZMAX, then M=0.33 (X/XMAX)+0.33(Y/YMAX)+0.33(Z/ZMAX)；
X=XMAXOr Y=YMAXOr Z=ZMAX, then M=1.0.
The index of AP is as follows:
Maximum cpu load is 800MIPS, has currently used 300MIPS, then X=300, XMAX=800；
Maximum access load is 100 STA, has currently accessed 90 STA, then Y=90, YMAX=100；
Outlet bandwidth is 1000Mbps, has currently used 50Mbps, then Z=50, XMAX=1000；
Then comprehensive evaluation M=0.33 (300/800)+0.33 (90/100)+0.33 (50/1000)=0.44.
AP generates the Beacon frame for carrying comprehensive evaluation and is periodically sent out Beacon frame.Compared to existing
Technology, the Beacon frame new field Vendor Specific IE field in the specific embodiment of the invention are used to placed comprehensive
Assessed value.If STA receives Beacon frame, it can get the AP's from newly-increased Vendor Specific IE field
Comprehensive evaluation.
Increase Comprehensive Assessment value parameter in Probe Response frame, specifically:
After AP receives the Probe Request frame from STA, the evaluation information of itself is collected, which includes
The outlet bandwidth situation (Z) of cpu load degree (X), the access load of machinery systems (Y) of AP and AP.
AP is generated comprehensive evaluation (M) according to preset rules by information is evaluated, as follows:
If X < XMAXAnd Y < YMAXAnd Z < ZMAX, then M=α (X/XMAX)+β(Y/YMAX)+γ(Z/ZMAX)；
Wherein, α, β, γ are respectively to be greater than 0 and the weighted value less than 1, and alpha+beta+γ=1；The definition of specific each parameter is such as
Described by preceding Beacon frame, therefore this will not be repeated here.
AP generates the Probe Response frame for carrying comprehensive evaluation and sends the Probe Response to STA
Frame.Compared to the prior art, the Probe Response frame new field in the specific embodiment of the invention, is commented for placed comprehensive
Definite value.If STA receives Probe Response frame, the comprehensive evaluation of the AP can be got from new field.
In this step, it can further include STA caching to obtain from Beacon frame and Probe Response frame
To each AP comprehensive evaluation and be updated according to the comprehensive evaluation of each AP of newest acquisition.
Step 102, when STA selection AP is associated, the first candidate AP set is filtered out according to the comprehensive evaluation of AP.
In this step, STA can receive signal and can be referred to using associated AP as candidate AP with associated AP all
Be the SSID of the AP be open without password or SSID be WAP or WAP2.
In X=XMAXOr Y=YMAXOr Z=ZMAX, i.e. in the case where comprehensive evaluation M=1.0, since the CPU of AP itself is negative
The outlet bandwidth situation of the access load of machinery systems or AP of load degree or AP all has reached the maximum value, so being not suitable as being associated with
AP.Therefore, the AP of comprehensive evaluation M=1.0 is deleted in candidate AP, forms the first candidate AP set.
Step 103, in the first candidate AP set, judge whether the RSSI value of all AP is both less than setting value, if so,
Carry out step 104；If not, carrying out step 105.
In this step, RSSI is the important reference indicator of associated AP, if RSSI value be less than setting value, such as-
60dBm, it will usually cause the wireless connection of STA and AP unstable, therefore carry out the judgement of RSSI power.
Step 104, in the first candidate AP set, according to RSSI value determination and the associated AP of STA.
In this step, if the RSSI value of all AP is both less than -60dBm in the first candidate AP set, RSSI is selected
Be worth maximum AP as with the associated AP of STA.
Step 105, the second candidate AP set is filtered out according to the RSSI value of AP, and gathered in the second candidate AP, according to AP
Comprehensive evaluation it is determining with the associated AP of STA.
In this step, it if the RSSI value of not all AP is both less than -60dBm in the first candidate AP set, sieves
It selects AP of the RSSI value greater than -60dBm and forms the second candidate AP set.Gather in the second candidate AP, selects comprehensive evaluation most
Big AP as with the associated AP of STA.
The present invention also provides a kind of devices that association access point is determined for website, as shown in Figure 2, comprising:
Module 201 is obtained, the RSSI value and synthesis for obtaining AP by periodically receiving the Beacon frame from AP
Assessed value；And/or by sending Probe Request frame search associated AP, if receiving Probe Response frame,
The RSSI value and comprehensive evaluation of AP are obtained from Probe Response frame, wherein the Beacon frame and the Probe
Response frame new field is used to placed comprehensive assessed value, and comprehensive evaluation includes the access load of cpu load degree, AP
The outlet bandwidth situation of degree and AP；
Relating module 202, for signal can be received and being capable of associated AP all when STA selection AP is associated
As candidate AP；The AP that comprehensive evaluation M=1.0 is deleted in the candidate AP forms the first candidate AP set；Described
One candidate AP set in, if it is determined that the RSSI value of all AP is both less than setting value, select the maximum AP of RSSI value as with STA
Associated AP；If the RSSI value of not all AP is both less than setting value in the first candidate AP set, RSSI value is filtered out
The AP being greater than the set value forms the second candidate AP set, and gathers in the second candidate AP, selects comprehensive evaluation maximum
AP as with the associated AP of STA.
The present invention also provides a kind of systems for determining association access point for website, as shown in Figure 3, comprising:
AP, for site STA send carry AP RSSI value and comprehensive evaluation Beacon frame and/or
Probe Response frame, wherein the Beacon frame and the Probe Response frame distinguish new field, for placing
Comprehensive evaluation, comprehensive evaluation include the outlet bandwidth situation of cpu load degree, the access load of machinery systems of AP and AP；
STA, for obtaining the RSSI value and comprehensive evaluation of AP from Beacon frame and/or Probe Response frame；
When STA selection AP be associated when, using it is all can receive signal and can associated AP as candidate AP；In the candidate AP
The AP of comprehensive evaluation M=1.0 is deleted, the first candidate AP set is formed；In first candidate AP set, if it is determined that institute
There is the RSSI value of AP to be both less than setting value, select the maximum AP of RSSI value as with the associated AP of STA；If first candidate's AP collection
The RSSI value of not all AP is both less than setting value in conjunction, then filters out the AP that RSSI value is greater than the set value and form the second candidate
AP set, and the second candidate AP set, select the maximum AP of comprehensive evaluation as with the associated AP of STA.
Of the invention determines the device of associated AP and determines the relevant technologies in the system of associated AP for STA for STA
Details determines that the method for associated AP is similar with STA above-mentioned, therefore this will not be repeated here.
Although the present invention has been disclosed in the preferred embodiments as above, present invention is not limited to this.Any art technology
Personnel can make various changes or modifications, therefore protection scope of the present invention is answered without departing from the spirit and scope of the present invention
When being defined by the scope defined by the claims..It is obvious to a person skilled in the art that the present invention is not limited to above-mentioned demonstrations
Property embodiment details and without departing from the spirit or essential characteristics of the present invention can be with other specific shapes
Formula realizes the present invention.Therefore, it in all respects, the embodiments should be taken as exemplary, and is non-limited
, the scope of the invention being indicated by the appended claims rather than by the foregoing description, it is intended that being equal for claim will be fallen in
All changes in the meaning and scope of important document are included within the present invention.
Claims (12)
1. a kind of method that website determines association access point characterized by comprising
The received signal strength indication value and comprehensive evaluation of station for acquiring access point, the comprehensive evaluation include cpu load
The outlet bandwidth situation of degree, the access load of machinery systems of access point and access point, the create-rule of the comprehensive evaluation are as follows:
If X < XMAXAnd Y < YMAXAnd Z < ZMAX, then M=α (X/XMAX)+β(Y/YMAX)+γ(Z/ZMAX)；
Wherein, α, β, γ are respectively to be greater than 0 and the weighted value less than 1, and alpha+beta+γ=1；X is the cpu load journey of current collection
Degree, XMAXFor CPU maximum load degree, Y is the access load of machinery systems of the access point of current collection, YMAXIt is connect for the maximum of access point
Enter the load of machinery systems, Z is the outlet bandwidth situation of the access point of current collection, ZMAXFor the maximum outlet bandwidth situation of access point, M
For comprehensive evaluation；
When website selection access point is associated, sieved in all access points searched according to the comprehensive evaluation of access point
Select the first candidates set；
In the first candidates set, determine that the received signal strength indication value of not all access point is both less than set
Definite value then filters out the second candidates set according to the received signal strength indication value of access point, and waits described second
Choosing access point set, according to the determining access point with station associate of the comprehensive evaluation of access point.
2. the method that website as described in claim 1 determines association access point, which is characterized in that the station for acquiring access point
Received signal strength indication value and comprehensive evaluation, specifically:
Website obtains the received signal strength indication value of access point and comprehensive by periodically receiving beacon frame from access point
Close assessed value；And/or
Website is by sending probe requests thereby frame search association access point, if receiving probing response frame, from probing response frame
Obtain the received signal strength indication value and comprehensive evaluation of access point.
3. the method that website as claimed in claim 2 determines association access point, which is characterized in that in the beacon frame and described
Probing response frame distinguishes new field, and by comprehensive evaluation addition in new field.
4. the method that website as described in claim 1 determines association access point, which is characterized in that described according to the comprehensive of access point
It closes assessed value and filters out the first candidates set in all access points searched, specifically:
When website selection access point is associated, using it is all can receive signal and can associated access point as candidate access
Point；The access point that comprehensive evaluation M=1.0 is deleted in the candidates, forms the first candidates set.
5. the method that website as described in claim 1 or 4 determines association access point, which is characterized in that the method also includes:
In the first candidates set, if it is determined that the received signal strength indication value of all access points is both less than set
Value, selects the maximum access point of received signal strength indication value as the access point with station associate.
6. the method that website as claimed in claim 5 determines association access point, which is characterized in that the connecing according to access point
It receives signal strength indication value and filters out the second candidates set, and in the second candidates set, according to access
The determining access point with station associate of the comprehensive evaluation of point, specifically:
If the received signal strength indication value of not all access point is both less than setting value in the first candidates set,
It then filters out the access point that received signal strength indication value is greater than the set value and forms the second candidates set, and described the
Two candidates set select the maximum access point of comprehensive evaluation as the access point with station associate.
7. a kind of device for determining association access point for website characterized by comprising
Obtain module, for obtaining the received signal strength indication value and comprehensive evaluation of access point, the comprehensive evaluation
Create-rule are as follows:
If X < XMAXAnd Y < YMAXAnd Z < ZMAX, then M=α (X/XMAX)+β(Y/YMAX)+γ(Z/ZMAX)；
Wherein, α, β, γ are respectively to be greater than 0 and the weighted value less than 1, and alpha+beta+γ=1；X is the cpu load journey of current collection
Degree, XMAXFor CPU maximum load degree, Y is the access load of machinery systems of the access point of current collection, YMAXIt is connect for the maximum of access point
Enter the load of machinery systems, Z is the outlet bandwidth situation of the access point of current collection, ZMAXFor the maximum outlet bandwidth situation of access point, M
For comprehensive evaluation；
Relating module, for being searched according to the comprehensive evaluation of access point when website selection access point is associated
The first candidates set is filtered out in all access points；In the first candidates set, determine not all
The received signal strength indication value of access point is both less than setting value, then is filtered out according to the received signal strength indication value of access point
Second candidates set, and in the second candidates set, it is determined and is stood according to the comprehensive evaluation of access point
The associated access point of point.
8. the device of association access point is determined for website as claimed in claim 7, which is characterized in that the acquisition module,
It is specifically used for: obtains the received signal strength indication value of access point and comprehensive by periodically receiving beacon frame from access point
Assessed value is closed, and/or, by sending probe requests thereby frame search association access point, if receiving probing response frame, from detection
The received signal strength indication value and comprehensive evaluation of response frame acquisition access point, wherein the beacon frame and the detection are rung
Frame is answered to distinguish new field, and by comprehensive evaluation addition in new field.
9. the device of association access point is determined for website as claimed in claim 7, which is characterized in that the relating module,
Be specifically used for: when website selection access point be associated when, using it is all can receive signal and can associated access point as time
Select access point；The access point that comprehensive evaluation M=1.0 is deleted in the candidates, forms the first candidates collection
It closes；In the first candidates set, if it is determined that the received signal strength indication value of all access points is both less than set
Definite value selects the maximum access point of received signal strength indication value as the access point with station associate；If the first candidate connects
The received signal strength indication value for entering not all access point in point set is both less than setting value, then it is strong to filter out reception signal
The access point that is greater than the set value of degree indicated value forms the second candidates set, and in the second candidates set,
Select the maximum access point of comprehensive evaluation as the access point with station associate.
10. a kind of system for determining association access point for website characterized by comprising
Access point, for carrying the received signal strength indication value of access point and the beacon of comprehensive evaluation to website transmission
Frame and/or probing response frame, the comprehensive evaluation include cpu load degree, the access load of machinery systems of access point and access point
Outlet bandwidth situation, the create-rule of the comprehensive evaluation are as follows:
If X < XMAXAnd Y < YMAXAnd Z < ZMAX, then M=α (X/XMAX)+β(Y/YMAX)+γ(Z/ZMAX)；
Wherein, α, β, γ are respectively to be greater than 0 and the weighted value less than 1, and alpha+beta+γ=1；X is the cpu load journey of current collection
Degree, XMAXFor CPU maximum load degree, Y is the access load of machinery systems of the access point of current collection, YMAXIt is connect for the maximum of access point
Enter the load of machinery systems, Z is the outlet bandwidth situation of the access point of current collection, ZMAXFor the maximum outlet bandwidth situation of access point, M
For comprehensive evaluation；
Website, received signal strength indication value and synthesis for obtaining access point from beacon frame and/or probing response frame are commented
Definite value；When website selection access point is associated, according to the comprehensive evaluation of access point in all access points searched
Filter out the first candidates set；In the first candidates set, the reception of not all access point is determined
Signal strength indication value is both less than setting value, then filters out the second candidate access according to the received signal strength indication value of access point
Point set, and in the second candidates set, according to the determining access with station associate of the comprehensive evaluation of access point
Point.
11. the system for determining association access point for website as claimed in claim 10, which is characterized in that described access point exists
New field in the beacon frame and the probing response frame, and by comprehensive evaluation addition in new field.
12. the system for determining association access point for website as claimed in claim 10, which is characterized in that the website, tool
Body is used for: when website selection access point is associated, using it is all can receive signal and can associated access point as candidate
Access point；The access point that comprehensive evaluation M=1.0 is deleted in the candidates, forms the first candidates set；
In the first candidates set, if it is determined that the received signal strength indication value of all access points is both less than set
Value, selects the maximum access point of received signal strength indication value as the access point with station associate；If the first candidate access
The received signal strength indication value of not all access point is both less than setting value in point set, then filters out received signal strength
The access point that indicated value is greater than the set value forms the second candidates set, and in the second candidates set, choosing
The maximum access point of comprehensive evaluation is selected as the access point with station associate.
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