CN103581984B - WLAN eats dishes without rice or wine quality monitoring method and device - Google Patents
WLAN eats dishes without rice or wine quality monitoring method and device Download PDFInfo
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Abstract
Eated dishes without rice or wine quality monitoring method and device the embodiment of the invention discloses a kind of WLAN.Wherein, the method include the bottom for obtaining an AP current operating channels make an uproar, the self communication quality of the AP, other AP to the interference signal intensity of the AP and other AP communicated with WLAN terminal to the interference portfolio of the AP；For the above-mentioned parameter for obtaining is respectively allocated different weights, unification is converted to nondimensional interference level；Each data that interference level will be scaled are added, and obtain the interference level of the AP current operating channels, to be determined whether according to the interference level of the AP current operating channels to switch over the working channel of the AP.The embodiment of the present invention can be more accurate and comprehensively reflection wlan system is eated dishes without rice or wine the interference size in environment, is easy to wlan system more reasonably to select working channel.
Description
Technical field
The present invention relates to WLAN, especially, it is related to a kind of WLAN（Wireless Local Area
Network, WLAN）Eat dishes without rice or wine quality monitoring method and device.
Background technology
WLAN technologies are a kind of based on the local area network technology being wirelessly transferred, compared with wireline networking techniques, with flexibly, build
The features such as net is rapid and individualized.This technology is applied to the access network field of telecommunications network, can be conveniently and neatly use
Family provides wireless access.The application is suitable for the public place that user's mobility is larger, have data traffic requirement, high-end enterprise
And domestic consumer, need the occasion of interim networking and be difficult to using environment of Wired access mode etc..
In recent years, the application to WLAN is developed rapidly, no matter is obtained in family, enterprise and public area more wide
General application.At present, for operator, WLAN business has turned into the joint of home broadband and mobile communication.In WLAN
Build in networking, to reduce difficulty of construction, strengthening final-period management and safeguarding control ability, increase network organizing flexibility, its group
Net is tended to by traditional AP（Access Point, WAP）Networking is to AC（Access Controller, access
Control device）With reference to " thin " AP networkings that AP is constituted（Hereinafter referred to as：Centralized Control type AC+AP）Transition, realizes to network entirety
Unified management and operation.Wherein, AC is also called wireless exchange board or Centralized Controller.In " thin " AP networkings, an AC can
To manage thousands of AP, all AP configured, monitored and are counted etc. with operation.
But, because WLAN technical works are few in unauthorized open frequency range, non-overlapped frequency number（2.4GHz only has
Three frequencies of non-overlapping copies, 5.8GHz only has five frequencies of non-overlapping copies）And communication occupancy frequency range itself is high, causes
Wlan network system is easily interfered.With the extensive use of WLAN technologies, in the environment of eating dishes without rice or wine of wlan system work, can
Wireless channel（That is, radio band, hereinafter referred to as channel）All be not it is idle, the 2.4G frequency ranges of wherein WLAN work with
Numerous wireless devices such as bluetooth, wireless mouse are shared；And 5.8G frequency ranges are also with the popularization of 802.11a and 802.11n, Yi Jixin
802.11ac technologies development, the air interference of 5.8G frequency ranges also can be increasingly severe.Therefore need to each available channel
Disturbed condition estimated, so that AP can select to disturb smaller and beneficial to the multi-channel operation of communication.And with 802.11n and
The development of 802.11ac, work bandwidth constantly extends, and AP is also more easily interfered in itself, it is therefore desirable to which a consideration is more complete
Face, method for evaluating quality of as a result more accurately eating dishes without rice or wine adjusts the foundation of working condition as AP.
In existing WLAN networkings, the quality of eating dishes without rice or wine of AP channels is made an uproar according to channel bottom and by scanning（For example, monitoring
Beacon frames（That is, beacon frame）Or send probe request frames（Probe request）Detection etc.）Other WLAN systems for obtaining
System（Wlan system in addition to its own system is considered interference source）Working channel and signal intensity estimate.Bottom make an uproar it is small,
It is small that the channel that interference source is few and interference signal intensity is low is typically considered to interference, i.e. quality of eating dishes without rice or wine is good.
Realize it is of the invention during, inventor find, the channel that WLAN interference sources are few and interference signal intensity is low, its
Quality of eating dishes without rice or wine might not get well.For example, certain interference source heavy traffic, its adverse effect to quality of eating dishes without rice or wine is stronger than multiple signals
The influence sum that the stronger more idle interference source of degree is caused is big.It can be seen that, existing WLAN eats dishes without rice or wine quality estimation method not
Can accurately and comprehensively reflect quality of actually eating dishes without rice or wine, and existing WLAN quality estimation methods of eating dishes without rice or wine are also less prone to reflect non-WLAN
The disturbed condition of interference source, for example, the interference that micro-wave oven, bluetooth equipment etc. are caused.
The content of the invention
The embodiment of the present invention technical problem to be solved is to provide a kind of WLAN and eats dishes without rice or wine quality monitoring method and device,
Can be more accurate and comprehensively detection WLAN eats dishes without rice or wine quality.
The embodiment of the invention provides a kind of WLAN to eat dishes without rice or wine quality monitoring method, including obtain an AP current operating channels
Bottom is made an uproar, the self communication quality of the AP, other AP to the interference signal intensity of the AP and communicated with WLAN terminal other
Interference portfolios of the AP to the AP；For obtain the AP current operating channels bottom make an uproar, the self communication quality of the AP, other AP
Interference signal intensity to the AP and other AP communicated with WLAN terminal are respectively allocated not to the interference portfolio of the AP
Same weight, unification is converted to nondimensional interference level；Each data that interference level will be scaled are added, and obtain the AP current
The interference level of working channel, determines whether to enter the working channel of the AP with according to the interference level of the AP current operating channels
Row switching.
The embodiment of the present invention additionally provides a kind of WLAN and eats dishes without rice or wine quality monitoring device, including data capture unit, for obtaining
The bottom for taking an AP current operating channels is made an uproar, the self communication quality of the AP, other AP to the interference signal intensity of the AP and with
Interference portfolios of other AP that WLAN terminal is communicated to the AP；Data reduction unit, it is current for the AP for acquisition
The bottom of working channel is made an uproar, the self communication quality of the AP, other AP are carried out to the interference signal intensity of the AP and with WLAN terminal
Other AP of communication are respectively allocated different weights to the interference portfolio of the AP, and unification is converted to nondimensional interference level；
Interference level determining unit, each data for will be scaled interference level are added, and obtain the interference of the AP current operating channels
Level, to be determined whether according to the interference level of the AP current operating channels to switch over the working channel of the AP.
WLAN provided in an embodiment of the present invention is eated dishes without rice or wine quality monitoring method and device, and the bottom for not only allowing for working channel is made an uproar
With interference source signal intensity, it is also contemplated that the communication quality of itself and other AP to the disturbed condition of the AP, based on these because
The data that plain comprehensive analysis gets, and then obtain the wlan system of current operating channel and eat dishes without rice or wine quality or the working channel
Disturbed condition.Therefore, the embodiment of the present invention can be more accurate and comprehensively reflection wlan system is eated dishes without rice or wine the interference size in environment,
More accurately estimate that WLAN eats dishes without rice or wine quality, be easy to wlan system more reasonably to select working channel, improve WLAN radio communication matter
Amount.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application.Attached
In figure：
Fig. 1 be WLAN of the present invention eat dishes without rice or wine quality monitoring method one embodiment schematic flow sheet.
Fig. 2 be WLAN of the present invention eat dishes without rice or wine quality monitoring method another embodiment schematic flow sheet.
Fig. 3 is the schematic flow sheet that the embodiment of the present invention obtains each factor data by background scanning mode.
Fig. 4 be WLAN of the present invention eat dishes without rice or wine quality monitoring method another embodiment schematic diagram.
Fig. 5 a are AP mixed networking of the present invention in the AP0 and other 802.11n of the next 802.11ac of 5.8G frequency ranges
One schematic diagram of example.
Fig. 5 b are AP mixed networking of the present invention in the AP0 and other 802.11n of the next 802.11ac of 5.8G frequency ranges
The schematic diagram of another example.
Fig. 6 be WLAN of the present invention eat dishes without rice or wine quality monitoring device one embodiment structural representation.
Fig. 7 be WLAN of the present invention eat dishes without rice or wine quality monitoring device another embodiment structural representation.
Fig. 8 be WLAN of the present invention eat dishes without rice or wine quality monitoring device another embodiment structural representation.
Specific embodiment
The present invention is described more fully with reference to the accompanying drawings, wherein illustrating exemplary embodiment of the invention.This
The exemplary embodiment of invention and its illustrate for explaining the present invention, but do not constitute inappropriate limitation of the present invention.
The description only actually at least one exemplary embodiment is illustrative below, never as to the present invention
And its any limitation applied or use.
Fig. 1 be WLAN of the present invention eat dishes without rice or wine quality monitoring method one embodiment schematic flow sheet.
As shown in figure 1, the embodiment may comprise steps of：
S102, obtain an AP current operating channels bottom make an uproar, the interference of the self communication quality, other AP of the AP to the AP
Signal intensity and other AP for being communicated with WLAN terminal to the interference portfolio of the AP, wherein, interference signal intensity master
To be the descending interference that is caused to this AP of other AP, no matter whether other AP set up data cube computation with WLAN terminal, the interference is begun
Exist eventually, for example, the broadcast singal of these AP can be interfered to the AP, interference portfolio major embodiment WLAN terminal and its
To the interference caused by the AP when his AP carries out data transmission, the self communication quality of the AP can include but is not limited to the AP certainly
Body sends the average modulation rate for being successfully transmitted message of average retransmission rate and the AP itself of message, wherein, micro-wave oven and bluetooth
Use Deng wireless device can influence the self communication quality of the AP；
For example, can be by monitoring beacon frames or snoop responses in the probe response of probe request frames
Frame（Probing response frame）Other AP are obtained to the interference signal intensity of the AP and the BSSID of other AP（Basic Service Set
ID, a kind of special Ad-hoc LAN applications ID）；Can by open promiscuous mode monitor communicated with WLAN terminal its
The interference portfolio of his AP.
S104, makes an uproar for the bottom of the AP current operating channels for obtaining, the self communication quality of the AP, other AP are to the AP's
Interference signal intensity and other AP communicated from WLAN terminal are respectively allocated different weights to the interference portfolio of the AP,
Unification is converted to nondimensional interference level.
S106, each data that will be scaled interference level are added, and the interference level of the AP current operating channels are obtained, with root
Determine whether to switch over the working channel of the AP according to the interference level of the AP current operating channels.
The embodiment has considered the factor such as AP self communications state and extraneous communications status to estimate eating dishes without rice or wine for WLAN
Quality, significantly improves AP monitoring of environmental and jamproof ability.Compared with prior art, more can accurately and comprehensively reflect
Wlan system is eated dishes without rice or wine the interference size in environment, more accurately estimates that WLAN eats dishes without rice or wine quality, is easy to wlan system more reasonably to select
Select working channel, improve WLAN radio communication qualities, be particularly well-suited to public hot spot region complexity and eat dishes without rice or wine wlan device under environment
Deployment with work.
In order that AP can be operated on a preferable channel of quality of eating dishes without rice or wine, can also judge that other AP do to the AP
Whether other AP for disturbing signal intensity and/or being communicated with WLAN terminal are more than setting thresholding to the interference portfolio of the AP,
Thresholding is such as larger than set, then when the AP business is idle, the AP is switched to other available inoperative channels, with can to other
The interference level of inoperative channel is monitored.
Additionally, in the AP heavy traffics, watch-dog can be set come to it by other available inoperative channels
He is monitored the interference level of available inoperative channel.
Further, the interference of the interference level of the current operating channel that will be monitored and other available inoperative channels
Level is compared；The minimum available channel of interference level is set to the working channel of the AP.
Fig. 2 be WLAN of the present invention eat dishes without rice or wine quality monitoring method another embodiment schematic flow sheet.
As shown in Fig. 2 the embodiment may comprise steps of：
S202, AP acquisition channel bottom are made an uproar, other AP interference sources are to the interference signal intensity of the AP, the speed of itself eating dishes without rice or wine of the AP
Rate（That is, AP itself is averagely successfully transmitted the modulation rate of message）, itself retransmission rate（That is, AP itself sends the flat of message
Equal retransmission rate）Other AP communicated with WLAN terminal are to each factor datas such as the interference portfolios of the AP；
Wherein, the data of the AP current operating channels made an uproar including channel bottom, interference signal intensity, itself radio interface rate, from
Each factor such as body retransmission rate and interference portfolio, the data of the available non-present working channels of the AP include interference signal intensity
The factor such as made an uproar with the bottom of current inoperative channel.Each factor data can in different ways be obtained according to actual conditions.Example
Such as, working channel can by monitor, inoperative channel can be by scanning or increasing pure monitoring device（The monitoring device
An AP that access service is not provided is can be understood as, therefore, it is possible to get whole exogenous datas that AP can be obtained, and compares AP
What is itself got is more complete）Obtained etc. mode.For some channels, certain factor cannot such as be obtained, and can be combined and specifically be eated dishes without rice or wine
Environment uses default default value.
S204, the AC connected by AP or AP are analyzed and are processed each factor, obtain the quality of eating dishes without rice or wine of channel to be estimated,
That is, the interference level eated dishes without rice or wine.
Specifically, the mode for analyzing and processing each factor can according to circumstances determine.Assuming that the quality of eating dishes without rice or wine of channel c is
Yc, it is F that the bottom on channel c is made an uproarc, the signal intensity of n interference source on channel c is respectively D1c、D2c、……、Dnc, on channel c
Itself radio interface rate be Mc, itself retransmission rate on channel c is Rc, the interference portfolio on channel c is Pc, then：
Yc=f (Fc, D1c, D2c..., Dnc, Mc, Rc, Pc) （1）
Wherein, f is the computing formula that the embodiment is used.For convenience of description, the embodiment only lists one most
Simple computing formula, but above-mentioned formula f is not limited in following formula（2）, can also be adjusted according to actual conditions.
Each factor data is unified into an interference level according to certain conversion relation by more than, and then add up each factor again
Interference level, and estimate quality of eating dishes without rice or wine using interference level numerical value, i.e. interference level value is smaller, and quality of eating dishes without rice or wine is better, otherwise
Interference level value is bigger, and quality of eating dishes without rice or wine is poorer.
Wherein, fF, fD, fM, fR, fPRepresent respectively bottom is made an uproar, interference signal intensity, radio interface rate, retransmission rate and interference industry
Business amount is scaled the computing formula of interference level.
Table 1 below show the embodiment of the present invention for 802.11g and 802.11a a kind of each factor data to disturb water
Flat conversion relation, the partial parameters in adjustment conversion relation, may be equally applicable for 802.11n and 802.11ac.
Table 1
It can be seen that, fF、fD、fR、fMAnd fPCalculated using piecewise function, correspond respectively to 101 row in table 1,102 row,
Numerical relation in 103 row, 104 row and 105 row.Interval according to where each factor data, segmentation is tabled look-up and is scaled interference level
（Interference level value can be adjusted according to actual conditions, and the interference level is the index coefficient that comprehensive different type variable is converted into, nothing
Unit）.If the conversion relation in table 1 is T,
From formula（3）The interference level of eating dishes without rice or wine of each channel can just be calculated.
It is pointed out that after inoperative channel is switched to, because the sweep time for being switched to other channels is too short, example
Such as, 100ms, it is impossible to accurately disturbed portfolio, therefore the bottom of inoperative channel can only be obtained and made an uproar with other AP to the AP
Interference signal intensity.Further, it is also possible to directly using under same AC using be switched to channel as working channel adjacent AP
The channel eat dishes without rice or wine quality as the AP available inoperative channel quality of eating dishes without rice or wine.
Next the acquisition modes to each factor data are described in detail.
Fig. 3 is the schematic flow sheet that the embodiment of the present invention obtains each factor data by background scanning mode.
As shown in figure 3, may comprise steps of：
S302, judges whether the current business of itself AP is busy；
If in regulation is actual（For example, taking the arbitrary value in 1 to 15 minute）, AP has user data service to forward（That is, have
RFDC）, then it is considered as this AP heavy traffics.
S304, in this AP heavy traffics, only monitors the data on this AP current operating channels.
S306, by passively listening beacon frames or by snoop responses in the probe of probe request frames
Response frames obtain the BSSID and RSSI of external interference source AP（Received Signal Strength Indication,
Received signal strength indicator）, i.e. interference signal intensity, at the same by open promiscuous mode monitor the radio frames in all sources with
Other AP for being communicated with WLAN terminal of calculating to the interference portfolio of the AP, wherein, the message that BSSID passes through parsing monitoring
Content obtaining, RSSI be listen to all beacon or probe response messages from same interference source RSSI it is average
Value, interference portfolio is the total bytes of all messages listened under promiscuous mode in the unit time.
S308, by counting Receive message itself retransmission rate and itself radio interface rate that itself sends.Wherein, itself is retransmitted
Rate is the average of the number of retransmissions of each message, and the number of retransmissions without the message for retransmitting is calculated as 0, then itself retransmission rate=total re-transmission
Number of times sum/total message number；Itself radio interface rate is the average value of modulation rate used when each message is successfully transmitted, i.e.,
The modulation rate sum of itself radio interface rate=all messages being successfully transmitted/total message number.
S310, when this AP business is idle, switches channel to scan other available inoperative channels.
S312, beacon frames is monitored on available inoperative channel or is received by sending probe request frames
The BSSID and interference signal that the mode of probe response frames obtains external interference source AP under available inoperative channel are strong
Degree.In order to not influence regular traffic, the scanning to available inoperative channel can only continue the very short time.
S314, when AP available inoperative channel get each interference source AP BSSID and interference signal intensity and
After the bottom of the channel is made an uproar, horse back switchback working channel with continue provide data service service.
S316, to improve the accuracy of data, can repeat above-mentioned data acquisition in a data acquisition cycle
Repeatedly.
S318, the data that will be got take average in a data acquisition cycle.
Fig. 4 be WLAN of the present invention eat dishes without rice or wine quality monitoring method another embodiment schematic diagram.
As shown in figure 4, an AP for working in 2.4G frequency ranges, there is 3 available channels 1,6 and 11, in order to provide preferably
Data service service, it is necessary to select one eat dishes without rice or wine it is best in quality, that is, disturb minimum channel as working channel.
After the upper electricity of AP, first carry out scanning the quality for solving each channel, select the measured channel of a matter, AP is in the quality afterwards
Normal work on good channel, scanning when now WLAN terminal equipment can just be associated with electricity on AP, therefore AP does not interfere with end
The data forwarding at end, scanning is only switched in AP normal works can just influence the use of online user.Start to obtain each
A kind of way of the data of channel is：Worked on available channel respectively 5 minutes.Certainly, can be of short duration during switch operating channel（About
1 second）When influenceing terminal data business, therefore this way to be applied to the business free time.When again heavy traffic needs to obtain each channel
The situation of data, can increase a monitoring device, so that AP can with all strength provide the user service, it is empty in itself working channel
In the case of mouth is the second best in quality, it is not listening to or monitors other available channels less, avoids influenceing current business.Can also use
The way of above-described embodiment, mainly monitors current operating channel, when AP is subject to more serious interference（Certain number of current operating channel
According to more than default threshold value）When, then the method for performing the present embodiment, i.e. obtain all available channel data.
In the embodiment shown in fig. 4, AP1, AP2 and AP3, AP4 work in channel 1, the and of channel 6 respectively in environment
Channel 11.
There is an interference source AP1 on channel 1, working service is busy, and signal intensity is low；There are two interference source AP2 on channel 6
And AP3, business is busy, and signal intensity is low；There is an interference source AP4 on channel 11, business is not busy, and signal intensity is high.
One group of sample data that table 2 below gets for AP in Fig. 4 embodiments：
Table 2
As shown in table 2,201 rows, 203 rows, 205 rows are respectively the number that AP gets under channel 1, channel 6 and channel 11
According to, according to the conversion relation in table 1, data can be all converted into interference level, and add up the interference level of each factor, such as
Shown in 202 rows, 204 rows and 206 rows.
It can be seen that, according to it is existing eat dishes without rice or wine quality or Interference Estimation method can not embody AP1 communication it is busy, can select not
Beneficial to the channel 1 of AP communications.And according to eat dishes without rice or wine quality and interference level estimation method provided in an embodiment of the present invention, channel 1
Interference level is 10, and the interference level of channel 6 and channel 11 is 6, i.e. the quality of eating dishes without rice or wine of channel 1 will compared with channel 6 and channel 11
Difference, AP should first avoid channel 1, prioritizing selection channel 6 or channel 11.
Above embodiment described how to assess quality of eating dishes without rice or wine under 2.4G frequency ranges, to avoid interference.Next, with 5.8G
Illustrated as a example by the AP mixed networking of the AP0 and other 802.11n of the next 802.11ac of frequency range, wherein, AP0 is used
80MHz frequency ranges.
Such as Fig. 5（a）It is shown, in the band limits that AP0 is used, there are 2 to use the 802.11n's of 20MHz frequency ranges in addition
AP1 and AP2；Such as Fig. 5（b）Shown, in the band limits that AP0 is used, only one of which uses the 802.11n's of 20MHz frequency ranges
AP1。
If Fig. 5（a）In AP1 and AP2 all in idle condition, and Fig. 5（b）In AP1 be in heavy traffic state.Root
According to traditional method, Fig. 5（a）In 2 interference sources compare Fig. 5（b）In 1 interference effect of interference source it is big, i.e. Fig. 5（b）Middle AP0
Residing quality of eating dishes without rice or wine compares Fig. 5（a）Quality of being eated dishes without rice or wine residing for middle AP0 is good.If in fact, Fig. 5（b）In 1 interference source heavy traffic,
Interface-free resources are ceaselessly seized, Fig. 5 will be caused（b）The quality of eating dishes without rice or wine of middle AP0 compares Fig. 5（a）Eating dishes without rice or wine for middle AP0 is of poor quality.And root
According to method of the present invention, the quality of eating dishes without rice or wine of AP0 not only allows for the quantity and signal intensity of interference source, it is also contemplated that AP0
Situations such as itself retransmission rate and radio interface rate, therefore correct conclusion, i.e. Fig. 5 can be drawn（b）AP0's eats dishes without rice or wine in shown situation
Quality compares Fig. 5（a）In shown situation AP0 eat dishes without rice or wine it is of poor quality.
It will appreciated by the skilled person that realize the whole and part steps of above method embodiment can pass through
Programmed instruction related hardware is completed, and foregoing program can be stored in a computing device read/write memory medium, the journey
Sequence upon execution, performs the step of including above method embodiment, and foregoing storage medium can include ROM, RAM, magnetic disc
It is various with CD etc. can be with the medium of store program codes.
Fig. 6 be WLAN of the present invention eat dishes without rice or wine quality monitoring device one embodiment structural representation.
As shown in fig. 6, the device 60 of the embodiment can include data capture unit 602, data reduction unit 604 and do
Disturb level determination unit 606.
Wherein, data capture unit 602 obtain an AP current operating channels bottom make an uproar, the self communication quality of the AP, its
His AP to the interference signal intensity of the AP and other AP communicated with WLAN terminal to the interference portfolio of the AP, the AP's
The average retransmission rate and the AP itself that self communication quality can include but is not limited to the AP itself transmission messages are averagely successfully sent out
Deliver newspaper text modulation rate；Data reduction unit 604 for obtain the AP current operating channels bottom make an uproar, the self communication of the AP
Quality, other AP are to the interference signal intensity of the AP and other AP communicated with WLAN terminal to the interference portfolio of the AP
Different weights are respectively allocated, unification is converted to nondimensional interference level；Interference level determining unit 606 will be scaled interference
Each data of level are added, and the interference level of the AP current operating channels are obtained, with the interference according to the AP current operating channels
Level determines whether to switch over the working channel of the AP.
The interference signal intensity of the AP is eated dishes without rice or wine quality weighing WLAN with other AP with traditional being made an uproar using channel bottom
Method is compared, and the embodiment can more fully embody WLAN and eat dishes without rice or wine environmental quality, significantly improves AP monitoring of environmental and anti-interference
Ability.
Alternatively, data capture unit can be by monitoring beacon frames or snoop responses in probe request frames
Probe response frames obtain other AP to the interference signal intensity of the AP and the BSSID of other AP, and data capture unit is also
Interference portfolios of other AP communicated with WLAN terminal to the AP can be monitored by opening promiscuous mode.
Fig. 7 be WLAN of the present invention eat dishes without rice or wine quality monitoring device another embodiment structural representation.
As shown in fig. 7, compared with the embodiment in Fig. 6, the device 70 in the embodiment can also include judging unit 702
With switch unit 704.
Wherein, judging unit 702 judges that other AP communicate to the interference signal intensity of the AP and/or with WLAN terminal
Other AP to the interference portfolio of the AP whether more than setting thresholding；Switch unit 704 is more than setting thresholding and the AP industry
When business is idle, the AP is switched to other available inoperative channels, with the interference level to other available inoperative channels
It is monitored.
Fig. 8 be WLAN of the present invention eat dishes without rice or wine quality monitoring device another embodiment structural representation.
As shown in figure 8, compared with the embodiment in Fig. 7, the device 80 in the embodiment can also include interference level ratio
Compared with unit 802, the interference level of the interference level of its current operating channel that will be monitored and other available inoperative channels
It is compared, and the minimum available channel of interference level is set to the working channel of the AP.
Each embodiment is described by the way of progressive in this specification, and what each embodiment was stressed is and it
The difference of his embodiment, identical and similar part can be with cross-reference between each embodiment.For device embodiment
For, because it is substantially similar to embodiment of the method, so description is fairly simple, related part may refer to embodiment of the method
Partial explanation.
The above embodiment of the present invention further considers that the factor of AP self communications state and extraneous communications status can be embodied
To estimate that WLAN eats dishes without rice or wine quality, AP monitoring of environmental and jamproof ability are significantly improved.The embodiment of the present invention only needs change
The monitoring of existing AP or AC and Channel assignment function and the environmental monitoring strategy according to actual adjustment system, realize that speed is fast,
It is reliable and stable and safety is easy-to-use, it is particularly well-suited to public hot spot region complexity and eats dishes without rice or wine the deployment of wlan device under environment.
Although being described in detail to some specific embodiments of the invention by example, the skill of this area
Art personnel it should be understood that above example is merely to illustrate, rather than in order to limit the scope of the present invention.The skill of this area
Art personnel to above example it should be understood that can modify without departing from the scope and spirit of the present invention.This hair
Bright scope is defined by the following claims.
Claims (6)
1. a kind of WLAN eats dishes without rice or wine quality monitoring method, it is characterised in that including：
The bottom for obtaining a wireless access point AP current operating channel is made an uproar, the self communication quality of the AP, other AP do to the AP
Disturb the interference portfolio of signal intensity and other AP for being communicated with WLAN terminal to the AP；
Make an uproar for the bottom of the AP current operating channels for obtaining, the self communication quality of the AP, other AP are to the interference signal of the AP
Intensity and other AP communicated from WLAN terminal are respectively allocated different weights, unified conversion to the interference portfolio of the AP
Into nondimensional interference level；
Each data that interference level will be scaled are added, and obtain the interference level of the AP current operating channels, work as with according to the AP
The interference level of preceding working channel determines whether to switch over the working channel of the AP；Wherein, the AP current operating channels
The computing formula of interference level is：
Wherein, YcIt is the interference level of the AP current operating channels, FcFor the bottom of current operating channel is made an uproar, DicIt is other AP to the AP's
Interference signal intensity, McIt is itself radio interface rate on the AP working channels, RcIt is itself retransmission rate on the AP working channels,
PcIt is the interference portfolio on working channel, fF, fD, fM, fR, fPRepresent respectively bottom is made an uproar, interference signal intensity, radio interface rate,
Retransmission rate and interference portfolio are scaled the computing formula of interference level, fF、fD、fR、fMAnd fPCalculated using piecewise function；
Judge interference of other AP to the interference signal intensity of the AP and/or other AP communicated with WLAN terminal to the AP
Whether portfolio is more than setting thresholding；
Thresholding is such as larger than set, then when the AP business is idle, the AP is switched to other available inoperative channels, with to it
He is monitored the interference level of available inoperative channel；
The interference level of the current operating channel that will be monitored is compared with the interference level of other available inoperative channels；
The minimum available channel of interference level is set to the working channel of the AP.
2. WLAN according to claim 1 eats dishes without rice or wine quality monitoring method, it is characterised in that methods described also includes：
In the AP heavy traffics, watch-dog is set come to other available inoperatives by other available inoperative channels
The interference level of channel is monitored.
3. WLAN according to claim 1 eats dishes without rice or wine quality monitoring method, it is characterised in that the self communication matter of the AP
Amount includes that the AP itself sends the average modulation rate for being successfully transmitted message of average retransmission rate and the AP itself of message.
4. WLAN according to claim 1 eats dishes without rice or wine quality monitoring method, it is characterised in that other available inoperatives are believed
The parameter of road monitoring includes that the bottom of available inoperative channel that the AP is switched to is made an uproar and other AP are to the interference signal of the AP
Intensity.
5. a kind of WLAN eats dishes without rice or wine quality monitoring device, it is characterised in that including：
Data capture unit, the bottom for obtaining an AP current operating channels is made an uproar, the self communication quality of the AP, other AP are to this
The interference portfolio of the interference signal intensity of AP and other AP for being communicated with WLAN terminal to the AP；
Data reduction unit, for for obtain the AP current operating channels bottom make an uproar, the self communication quality of the AP, other AP
Interference signal intensity to the AP and other AP communicated with WLAN terminal are respectively allocated not to the interference portfolio of the AP
Same weight, unification is converted to nondimensional interference level；
Interference level determining unit, each data for will be scaled interference level are added, and obtain the AP current operating channels
Interference level, to be determined whether according to the interference level of the AP current operating channels to switch over the working channel of the AP；Its
In, the computing formula of the interference level of the AP current operating channels is： Wherein, YcIt is the interference level of the AP current operating channels, FcIt is the bottom of current operating channel
Make an uproar, DicIt is other AP to the interference signal intensity of the AP, McIt is itself radio interface rate on the AP working channels, RcIt is the AP works
Make itself retransmission rate on channel, PcIt is the interference portfolio on working channel, fF, fD, fM, fR, fPRepresent respectively and bottom is made an uproar, is done
Disturb the computing formula that signal intensity, radio interface rate, retransmission rate and interference portfolio are scaled interference level, fF、fD、fR、fMAnd fP
Calculated using piecewise function；
Judging unit, for judge other AP to the interference signal intensity of the AP and/or communicated with WLAN terminal other
Whether AP is to the interference portfolio of the AP more than setting thresholding；
Switch unit, for when more than setting thresholding and the idle AP business, the AP being switched into other available inoperatives
Channel, is monitored with the interference level to other available inoperative channels；
Interference level comparing unit, the interference level and other available inoperative letters of the current operating channel for that will monitor
The interference level in road is compared, and the minimum available channel of interference level is set to the working channel of the AP.
6. WLAN according to claim 5 eats dishes without rice or wine quality monitoring device, it is characterised in that the self communication matter of the AP
Amount includes that the AP itself sends the average modulation rate for being successfully transmitted message of average retransmission rate and the AP itself of message.
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| CN104602312A (en) * | 2015-01-30 | 2015-05-06 | 海信集团有限公司 | Wireless channel switching method and AP (Access Point) |
| CN105263173A (en) * | 2015-09-17 | 2016-01-20 | 小米科技有限责任公司 | Channel switching method and device |
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