CN103581984A - WLAN air interface quality monitoring method and device - Google Patents
WLAN air interface quality monitoring method and device Download PDFInfo
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- CN103581984A CN103581984A CN201210262154.9A CN201210262154A CN103581984A CN 103581984 A CN103581984 A CN 103581984A CN 201210262154 A CN201210262154 A CN 201210262154A CN 103581984 A CN103581984 A CN 103581984A
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Abstract
An embodiment of the invention discloses a WLAN air interface quality monitoring method and a device. The WLAN air interface quality monitoring method comprises the steps of obtaining background noise of a current working channel of an AP, the communication quality of the AP, the interference signal strength of other AP to the AP and the interference service amount of other AP communicated with a WLAN terminal to the AP; respectively allocating different weights for obtained parameters and uniformly converting the weights into dimensionless interference levels; adding data of converted interference levels together to obtain the interference level of the current working channel of the AP, and confirming whether the current working channel of the AP is required to be switched or not according to the interference level of the current working channel of the AP. By adopting the WLAN air interface quality monitoring method and the device, the interference magnitude in a WLAN system air interface environment can be accurately and comprehensively, and a WLAN system can conveniently and reasonably select the working channel.
Description
Technical field
The present invention relates to WLAN, especially, relate to a kind of WLAN(Wireless Local Area Network, WLAN (wireless local area network)) eat dishes without rice or wine quality monitoring method and device.
Background technology
WLAN technology is a kind of local area network technology based on wireless transmission, compares with cable network technology, has the features such as flexible, networking is rapid and individualize.This technology is applied to the Access Network field of telecommunications network, can facilitates and neatly for user provides wireless access.The environment that this application is suitable for that user's mobility is large, the occasion of the public place that has data traffic requirement, high-end enterprise and domestic consumer, the interim networking of needs and being difficult to adopts Wired access mode etc.
In recent years, the application of WLAN is developed rapidly, in family, enterprise and public area, all obtained application comparatively widely.At present, for operator, WLAN business has become the joint of family broadband and mobile communication.At WLAN, build in networking, for reducing difficulty of construction, strengthen final-period management and safeguard control ability, increasing network organizing flexibility, its networking more trends towards by traditional AP(Access Point, WAP (wireless access point)) networking is to AC(Access Controller, " thin " AP networking access control equipment) forming in conjunction with AP (hereinafter referred to as: centralized control type AC+AP) transition, realizes the unified management of network integral body and operation.Wherein, AC is called again wireless exchange board or Centralized Controller.In " thin " AP networking, an AC can manage thousands of AP, and all AP are configured, are monitored and the operation such as statistics.
But, due to WLAN technical work, at unauthorized open frequency range, non-overlapped frequency number, few (2.4GHz only has the frequency of three non-overlapping copies, 5.8GHz only has the frequency of five non-overlapping copies) and communication itself to take frequency range high, cause wlan network system to be easily interfered.Extensive use along with WLAN technology, eating dishes without rice or wine in environment of wlan system work, available wireless channel (that is, radio band, be designated hereinafter simply as channel) be all not idle, numerous wireless devices such as the 2.4G frequency range that wherein WLAN works and bluetooth, wireless mouse are shared; And 5.8G frequency range is also along with the popularization of 802.11a and 802.11n, and the development of new 802.11ac technology, the air interference of 5.8G frequency range also can be more and more serious.Therefore AP need to estimate the disturbed condition of each available channel, so that can select to disturb less and be beneficial to the channel work of communication.And along with the development of 802.11n and 802.11ac, work bandwidth is constantly expanded, and itself is also more easily interfered AP, therefore need a consideration more comprehensively, the result method for evaluating quality of eating dishes without rice or wine more accurately, adjusts the foundation of operating state as AP.
In existing WLAN networking, the quality of eating dishes without rice or wine of AP channel is for example, according to making an uproar at the bottom of channel and (passing through scanning, monitor beacon frame (that is, beacon frame) or send probe request frame (probe request) and survey etc.) working channel of other wlan systems of obtaining (except the wlan system self system is considered interference source) and signal strength signal intensity estimate.The end channel little, interference source is few and interference signal intensity is low of making an uproar is considered to disturb little conventionally, that is, the quality of eating dishes without rice or wine is good.
In realizing process of the present invention, inventor finds, the channel that WLAN interference source is few and interference signal intensity is low, and its quality of eating dishes without rice or wine might not be got well.For example, certain interference source heavy traffic, it causes the adverse effect of the quality of the eating dishes without rice or wine interference source stronger more idle than a plurality of signal strength signal intensities, and to affect sum large.Visible, the existing WLAN quality estimation method of eating dishes without rice or wine can not reflect the actual quality of eating dishes without rice or wine accurately, all sidedly, and the existing WLAN quality estimation method of eating dishes without rice or wine is also difficult for the disturbed condition of the non-WLAN interference source of reflection, for example, the interference that microwave oven, bluetooth equipment etc. causes.
Summary of the invention
The technical problem that the embodiment of the present invention will solve is to provide a kind of WLAN eat dishes without rice or wine quality monitoring method and device, can be more accurately and detect all sidedly the WLAN quality of eating dishes without rice or wine.
The embodiment of the present invention provides a kind of WLAN quality monitoring method of eating dishes without rice or wine, and comprises other AP that make an uproar in the end that obtains an AP work at present channel, self communication quality of this AP, other AP communicate to the interference signal intensity of this AP with WLAN terminal interference traffic carrying capacity to this AP; For the end of this AP work at present channel of obtaining make an uproar, self communication quality of this AP, other AP distribute respectively different weights to the interference signal intensity of this AP and other AP of communicating from WLAN terminal to the interference traffic carrying capacity of this AP, is unifiedly converted to nondimensional interference level; Each data that are scaled interference level are added, obtain the interference level of this AP work at present channel, to determine whether the working channel of this AP to switch according to the interference level of this AP work at present channel.
The embodiment of the present invention also provides a kind of WLAN quality monitoring device of eating dishes without rice or wine, comprise data capture unit, for obtaining other AP that make an uproar in the end of an AP work at present channel, self communication quality of this AP, other AP communicate to the interference signal intensity of this AP with WLAN terminal interference traffic carrying capacity to this AP; Data reduction unit, be used to the end of this AP work at present channel obtaining to make an uproar, self communication quality of this AP, other AP distribute respectively different weights to the interference signal intensity of this AP and other AP of communicating from WLAN terminal to the interference traffic carrying capacity of this AP, is unifiedly converted to nondimensional interference level; Interference level determining unit, for each data that are scaled interference level are added, obtains the interference level of this AP work at present channel, to determine whether the working channel of this AP to switch according to the interference level of this AP work at present channel.
The WLAN that the embodiment of the present invention provides eat dishes without rice or wine quality monitoring method and device, not only considered that the end of working channel makes an uproar and interference source signal strength signal intensity, self communication quality and the disturbed condition of other AP to this AP have also been considered, the data that get based on these combined factors analyses, and then the eat dishes without rice or wine disturbed condition of quality or this working channel of the wlan system that obtains work at present channel.Therefore, the embodiment of the present invention can be more accurately and is reflected all sidedly wlan system interference in the environment size of eating dishes without rice or wine, and estimates more accurately the WLAN quality of eating dishes without rice or wine, and is convenient to wlan system and more reasonably selects working channel, improves WLAN radio communication quality.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms the application's a part.In the accompanying drawings:
Fig. 1 is the eat dishes without rice or wine schematic flow sheet of an embodiment of quality monitoring method of WLAN of the present invention.
Fig. 2 is the eat dishes without rice or wine schematic flow sheet of another embodiment of quality monitoring method of WLAN of the present invention.
Fig. 3 is that the embodiment of the present invention is obtained the schematic flow sheet of each factor data by background scanning mode.
Fig. 4 is the eat dishes without rice or wine schematic diagram of another embodiment of quality monitoring method of WLAN of the present invention.
Fig. 5 a is that the present invention is at the schematic diagram of an example of the next AP0 of 802.11ac of 5.8G frequency range and the AP mixed networking of other 802.11n.
Fig. 5 b is that the present invention is at the schematic diagram of another example of the next AP0 of 802.11ac of 5.8G frequency range and the AP mixed networking of other 802.11n.
Fig. 6 is the eat dishes without rice or wine structural representation of an embodiment of quality monitoring device of WLAN of the present invention.
Fig. 7 is the eat dishes without rice or wine structural representation of another embodiment of quality monitoring device of WLAN of the present invention.
Fig. 8 is the eat dishes without rice or wine structural representation of another embodiment of quality monitoring device of WLAN of the present invention.
Embodiment
With reference to the accompanying drawings the present invention is described more fully, exemplary embodiment of the present invention is wherein described.Exemplary embodiment of the present invention and explanation thereof are used for explaining the present invention, but do not form inappropriate limitation of the present invention.
To the description only actually of at least one exemplary embodiment, be illustrative below, never as any restriction to the present invention and application or use.
Fig. 1 is the eat dishes without rice or wine schematic flow sheet of an embodiment of quality monitoring method of WLAN of the present invention.
As shown in Figure 1, this embodiment can comprise the following steps:
S102, obtaining the end of an AP work at present channel makes an uproar, self communication quality of this AP, the interference traffic carrying capacity of other AP that other AP communicate to the interference signal intensity of this AP with WLAN terminal to this AP, wherein, this interference signal intensity is mainly the descending interference that other AP cause this AP, no matter whether other AP set up data with WLAN terminal is connected, this disturbs all the time and exists, for example, the broadcast singal of these AP can cause interference to this AP, interference when disturbed traffic carrying capacity major embodiment WLAN terminal and other AP carries out transfer of data, this AP being caused, self communication quality of this AP can include but not limited to that average retransmission rate and this AP self that this AP self sends message on average successfully send the modulation rate of message, wherein, the use of the wireless device such as microwave oven and bluetooth can affect self communication quality of this AP,
For example, can in the probe response of probe request frame frame (probing response frame), obtain the BSSID(Basic Service Set ID of other AP to the interference signal intensity of this AP and other AP, a kind of special Ad-hoc LAN application ID by monitoring beacon frame or snoop responses); Can monitor by opening promiscuous mode the interference traffic carrying capacity of other AP that communicate with WLAN terminal.
S104, for the end of this AP work at present channel of obtaining make an uproar, self communication quality of this AP, other AP distribute respectively different weights to the interference signal intensity of this AP and other AP of communicating from WLAN terminal to the interference traffic carrying capacity of this AP, is unifiedly converted to nondimensional interference level.
S106, is added each data that are scaled interference level, obtains the interference level of this AP work at present channel, to determine whether the working channel of this AP to switch according to the interference level of this AP work at present channel.
This embodiment has considered AP self communications status and extraneous communications status etc. because usually estimating the quality of eating dishes without rice or wine of WLAN, and has significantly improved AP monitoring of environmental and jamproof ability.Compared with prior art, can be more accurately and reflect all sidedly wlan system interference in the environment size of eating dishes without rice or wine, estimate more accurately the WLAN quality of eating dishes without rice or wine, be convenient to wlan system and more reasonably select working channel, improve WLAN radio communication quality, be specially adapted to public hot spot region complexity eat dishes without rice or wine deployment and the work of wlan device under environment.
For AP can be operated on a good channel of the quality of eating dishes without rice or wine, can also judge whether other AP are greater than setting thresholding to the interference signal intensity of this AP and/or with other AP that WLAN terminal communicates to the interference traffic carrying capacity of this AP, as be greater than setting thresholding, when this AP business is idle, this AP is switched to other available inoperative channels, so that the interference level of other available inoperative channels is monitored.
In addition, when this AP heavy traffic, can by other can with inoperative channel watch-dog is set the interference level of other available inoperative channels is monitored.
Further, the interference level of the interference level of the work at present channel monitoring and other available inoperative channels is compared; The available channel that interference level is minimum is set to the working channel of this AP.
Fig. 2 is the eat dishes without rice or wine schematic flow sheet of another embodiment of quality monitoring method of WLAN of the present invention.
As shown in Figure 2, this embodiment can comprise the following steps:
S202, AP makes an uproar at the bottom of obtaining channel, other AP interference sources to self radio interface rate of the interference signal intensity of this AP, this AP (, this AP self on average successfully sends the modulation rate of message), self retransmission rate (that is, this AP self sends the average retransmission rate of message), other AP of communicating with WLAN terminal each factor data such as interference traffic carrying capacity to this AP;
Wherein, at the bottom of the data of this AP work at present channel comprise channel, make an uproar, interference signal intensity, self radio interface rate, self retransmission rate and disturb each factors such as traffic carrying capacity, this AP can with the data of non-work at present channel comprise the end of interference signal intensity and the current inoperative channel factor such as make an uproar.Each factor data can be obtained in different ways according to actual conditions.For example, working channel can or increase pure watch-dog by scanning by monitoring, inoperative channel, and (this watch-dog can be understood as an AP that access service is not provided, therefore can get the whole extraneous data that AP can obtain, and than AP self, get more complete) etc. mode obtain.For certain factor of some channel, as obtained, can adopt default default value in conjunction with the environment of specifically eating dishes without rice or wine.
S204, the AC being connected by AP or AP analyzes and processes each factor, obtains the quality of eating dishes without rice or wine of channel to be estimated, that is, and the interference level of eating dishes without rice or wine.
Particularly, the mode of each factor of analyzing and processing can according to circumstances be determined.The quality of eating dishes without rice or wine of supposing channel c is Y
c, make an uproar as F in the end on channel c
c, the signal strength signal intensity of the interference source of the n on channel c is respectively D
1c, D
2c..., D
nc, self radio interface rate on channel c is M
c, self retransmission rate on channel c is R
c, the interference traffic carrying capacity on channel c is P
c:
Y
c＝f(F
c，D
1c，D
2c，…，D
nc，M
c，R
c，P
c) （1）
Wherein, f is the computing formula that this embodiment adopts.For convenience of explanation, this embodiment has only enumerated a computing formula the simplest, but above-mentioned formula f is not limited in following formula (2), can also adjust according to actual conditions.
Above each factor data is unified into an interference level according to certain conversion relation, and then the interference level of cumulative each factor, and by the interference level numerical value quality of estimating to eat dishes without rice or wine, that is, interference level value is less, and the quality of eating dishes without rice or wine is better, otherwise interference level value is larger, the quality of eating dishes without rice or wine is poorer.
Wherein, f
f, f
d, f
m, f
r, f
prepresent respectively the computing formula that make an uproar in the end, interference signal intensity, radio interface rate, retransmission rate and interference traffic carrying capacity are scaled interference level.
Following table 1 shows the embodiment of the present invention and for a kind of each factor data of 802.11g and 802.11a, arrives the conversion relation of interference level, adjusts the partial parameters in conversion relation, goes for equally 802.11n and 802.11ac.
Table 1
Visible, f
f, f
d, f
r, f
mand f
padopt piecewise function to calculate, correspond respectively to the numerical relation in the row of 101 in table 1,102 row, 103 row, 104 row and 105 row.According between each factor data location, segmentation is tabled look-up and is scaled interference level (interference level value can be according to actual conditions adjustment, and this interference level is the index coefficient ，Wu unit that comprehensive dissimilar variable is converted out).If the conversion relation in table 1 is T,
From formula (3), just can calculate the interference level of eating dishes without rice or wine of each channel.
It is pointed out that after being switched to inoperative channel, too short owing to being switched to sweep time of other channels, for example, 100ms, can not obtain disturbing accurately traffic carrying capacity, makes an uproar and the interference signal intensity of other AP to this AP in the end that therefore can only obtain inoperative channel.In addition, can also directly adopt the adjacent AP using be switched to channel as working channel under same AC the quality of eating dishes without rice or wine of this channel as this AP the quality of eating dishes without rice or wine at available inoperative channel.
Next the obtain manner of each factor data is described in detail.
Fig. 3 is that the embodiment of the present invention is obtained the schematic flow sheet of each factor data by background scanning mode.
As shown in Figure 3, can comprise the following steps:
S302, judges that whether the current business of self AP is busy;
For example, if in regulation is actual (, getting the arbitrary value in 1 to 15 minute), AP has user data service to forward (that is, having RFDC), is considered as this AP heavy traffic.
S304, when this AP heavy traffic, only monitors the data on this AP work at present channel.
S306, by passive monitoring beacon frame, or by snoop responses, in the probe response of probe request frame frame, obtain BSSID and the RSSI(Received Signal Strength Indication of external interference source AP, received signal strength indicator), , interference signal intensity, simultaneously by opening radio frames that promiscuous mode monitors all sources to calculate other AP of communicating with WLAN terminal interference traffic carrying capacity to this AP, wherein, the message content that BSSID monitors by parsing obtains, RSSI listens to from all beacon of same interference source or the RSSI mean value of probe response message, disturbing traffic carrying capacity is the total bytes of all messages of listening under promiscuous mode in the unit interval.
S308, by adding up Receive message self retransmission rate and self radio interface rate self sending.Wherein, the number of retransmissions that self retransmission rate is each message average, counts 0 without the number of retransmissions of the message retransmitting, self retransmission rate=total number of retransmissions sum/total message number; The mean value of modulation rate used when self radio interface rate successfully sends for each message, i.e. modulation rate sums/total message number of self radio interface rate=message that all successes send.
S310, when this AP business is idle, switching channels is to scan other available inoperative channel.
S312, can with inoperative channel on the mode monitoring beacon frame or receive probe response frame by sending probe request frame obtain BSSID and the interference signal intensity of extraneous interference source AP under available inoperative channel.In order not affect regular traffic, to the scanning of available inoperative channel, can only continue the very short time.
S314, when AP gets after the BSSID of each interference source AP and the end of interference signal intensity and this channel make an uproar at available inoperative channel, the working channel of switchback is at once to continue to provide data service service.
S316 for improving the accuracy of data, can repeat above-mentioned data acquisition repeatedly in a data acquisition cycle.
S318 gets average by the data that get in a data acquisition cycle.
Fig. 4 is the eat dishes without rice or wine schematic diagram of another embodiment of quality monitoring method of WLAN of the present invention.
As shown in Figure 4, an AP who works in 2.4G frequency range, has 3 available channels 1,6 and 11, for better data service service is provided, need to select one to eat dishes without rice or wine best in qualityly, disturbs minimum channel as working channel.
After AP powers on, the quality of each channel is understood in advanced line scanning, select the measured channel of a matter, AP works on the measured channel of this matter afterwards, now WLAN terminal equipment just can be associated with AP, scanning when therefore AP powers on can not affect the data retransmission of terminal, and only when AP works, carrying out switched scan just can affect online user's use.A kind of way that starts to obtain the data of each channel is: on available channel, work respectively 5 minutes.Certainly, during switch operating channel, can of short duration (approximately 1 second) affect terminal data business, therefore this way is applicable to business during the free time.When heavy traffic needs again to obtain the situation of each channel data, can increase a watch-dog, so that AP can be with all strength for user provides service, at self working channel, eat dishes without rice or wine in the second best in quality situation, do not monitor or monitor less other available channels, to avoid affecting current business.Also can adopt the way of above-described embodiment, mainly monitor work at present channel, when AP is subject to more serious interference when (certain data of work at present channel surpass default threshold value), then carry out the method for the present embodiment, that is, obtain all available channel data.
In the embodiment shown in fig. 4, in environment, there have been AP1, AP2 and AP3, AP4 to work in respectively channel 1, channel 6 and channel 11.
On channel 1, have an interference source AP1, working service is busy, and signal strength signal intensity is low; On channel 6, have two interference source AP2 and AP3, business is not busy, and signal strength signal intensity is low; On channel 11, have an interference source AP4, business is not busy, and signal strength signal intensity is high.
One group of sample data that following table 2 gets for AP in Fig. 4 embodiment:
Table 2
As shown in table 2,201 row, 203 row, 205 row are respectively the data that AP gets for 11 times at channel 1, channel 6 and channel, according to the conversion relation in table 1, data all can be converted into interference level, and the interference level of each factor of accumulative total, as shown in 202 row, 204 row and 206 row.
Visible, the communication that can not embody AP1 according to existing eat dishes without rice or wine quality or Interference Estimation way is busy, can select to be unfavorable for the channel 1 of AP communication.And eat dishes without rice or wine quality and the interference level estimation way that according to the embodiment of the present invention, provide, the interference level of channel 1 is 10, the interference level of channel 6 and channel 11 is 6,, the quality of eating dishes without rice or wine of channel 1 is poor compared with channel 6 and channel 11, and first AP should avoid channel 1, preferential selective channel 6 or channel 11.
Above-described embodiment has described how under 2.4G frequency range, to assess the quality of eating dishes without rice or wine, with avoid interference.Next, the next AP0 of 802.11ac of the 5.8G frequency range of take and the AP mixed networking of other 802.11n describe as example, wherein, and AP0 use 80MHz frequency range.
As shown in Fig. 5 (a), in the band limits using at AP0, there are in addition 2 AP1 and AP2 that use the 802.11n of 20MHz frequency range; As shown in Fig. 5 (b), in the band limits using at AP0, only has an AP1 who uses the 802.11n of 20MHz frequency range.
If the AP1 in Fig. 5 (a) and AP2 be in idle condition, and AP1 in Fig. 5 (b) is in heavy traffic state.According to traditional method, 2 interference sources in Fig. 5 (a) are larger than the interference effect of 1 interference source in Fig. 5 (b), and in Fig. 5 (b), the AP0 quality of eating dishes without rice or wine of living in is better than the middle AP0 of Fig. 5 (a) quality of eating dishes without rice or wine of living in.In fact, if 1 interference source heavy traffic in Fig. 5 (b) is ceaselessly seized interface-free resources, will cause AP0 in Fig. 5 (b) eat dishes without rice or wine quality than the middle AP0 of Fig. 5 (a) eat dishes without rice or wine of poor quality.And according to method of the present invention, the quality of eating dishes without rice or wine of AP0 has not only been considered quantity and the signal strength signal intensity of interference source, the situations such as AP0 self retransmission rate and radio interface rate have also been considered, therefore can draw correct conclusion, shown in Fig. 5 (b) in situation AP0 eat dishes without rice or wine quality than AP0 in situation shown in Fig. 5 (a) eat dishes without rice or wine of poor quality.
One of ordinary skill in the art will appreciate that, whole and the part steps that realizes said method embodiment can complete by the relevant hardware of program command, aforesaid program can be stored in a computing equipment read/write memory medium, this program is when carrying out, execution comprises the step of said method embodiment, and aforesaid storage medium can comprise the various media that can be program code stored such as ROM, RAM, magnetic disc and CD.
Fig. 6 is the eat dishes without rice or wine structural representation of an embodiment of quality monitoring device of WLAN of the present invention.
As shown in Figure 6, the device 60 of this embodiment can comprise data capture unit 602, data reduction unit 604 and interference level determining unit 606.
Wherein, data capture unit 602 obtains other AP that make an uproar in the end of an AP work at present channel, self communication quality of this AP, other AP communicate to the interference signal intensity of this AP with WLAN terminal interference traffic carrying capacity to this AP, and self communication quality of this AP can include but not limited to that average retransmission rate and this AP self that this AP self sends message on average successfully send the modulation rate of message; The end that data reduction unit 604 is this AP work at present channel of obtaining makes an uproar, self communication quality of this AP, other AP distribute respectively different weights to the interference signal intensity of this AP and other AP of communicating from WLAN terminal to the interference traffic carrying capacity of this AP, is unifiedly converted to nondimensional interference level; Interference level determining unit 606 is added each data that are scaled interference level, obtains the interference level of this AP work at present channel, to determine whether the working channel of this AP to switch according to the interference level of this AP work at present channel.
With traditional utilize to make an uproar at the bottom of channel with other AP, the interference signal intensity of this AP is weighed to the eat dishes without rice or wine method of quality of WLAN and compares, this embodiment can more fully embody the WLAN environmental quality of eating dishes without rice or wine, and significantly improves AP monitoring of environmental and antijamming capability.
Alternatively, data capture unit can obtain the BSSID of other AP to the interference signal intensity of this AP and other AP in the probe response of probe request frame frame by monitoring beacon frame or snoop responses, the interference traffic carrying capacity of other AP that data capture unit can also communicate by the monitoring of unlatching promiscuous mode and WLAN terminal to this AP.
Fig. 7 is the eat dishes without rice or wine structural representation of another embodiment of quality monitoring device of WLAN of the present invention.
As shown in Figure 7, compare with the embodiment in Fig. 6, the device 70 in this embodiment can also comprise judging unit 702 and switch unit 704.
Wherein, judging unit 702 judges whether other AP are greater than setting thresholding to the interference signal intensity of this AP and/or with other AP that WLAN terminal communicates to the interference traffic carrying capacity of this AP; Switch unit 704, being greater than setting thresholding and this AP business during the free time, is switched to other available inoperative channels by this AP, so that the interference level of other available inoperative channels is monitored.
Fig. 8 is the eat dishes without rice or wine structural representation of another embodiment of quality monitoring device of WLAN of the present invention.
As shown in Figure 8, compare with the embodiment in Fig. 7, device 80 in this embodiment can also comprise interference level comparing unit 802, its interference level by the interference level of the work at present channel monitoring and other available inoperative channels compares, and the minimum available channel of interference level is set to the working channel of this AP.
In this specification, each embodiment all adopts the mode of going forward one by one to describe, and what each embodiment stressed is and the difference of other embodiment that part identical with similar between each embodiment can cross-references.For device embodiment, because it is substantially similar to embodiment of the method, so description is fairly simple, relevant part can be referring to the explanation of embodiment of the method part.
The above embodiment of the present invention further consider can embody AP self communications status and extraneous communications status because usually estimating the WLAN quality of eating dishes without rice or wine, significantly improved AP monitoring of environmental and jamproof ability.The embodiment of the present invention only needs to change the monitoring of existing AP or AC and channel selection function and according to the environmental monitoring strategy of actual adjustment System, realize speed fast, reliable and stable and safety is easy-to-use, be specially adapted to the eat dishes without rice or wine deployment of wlan device under environment of public hot spot region complexity.
Although specific embodiments more of the present invention are had been described in detail by example, it should be appreciated by those skilled in the art, above example is only in order to describe, rather than in order to limit the scope of the invention.It should be appreciated by those skilled in the art, can without departing from the scope and spirit of the present invention, above embodiment be modified.Scope of the present invention is limited by claims.
Claims (10)
1. the WLAN quality monitoring method of eating dishes without rice or wine, is characterized in that, comprising:
The interference traffic carrying capacity of other AP that the end that obtains a wireless access point AP work at present channel makes an uproar, self communication quality of this AP, other AP communicate to the interference signal intensity of this AP with WLAN terminal to this AP;
For the end of this AP work at present channel of obtaining make an uproar, self communication quality of this AP, other AP distribute respectively different weights to the interference signal intensity of this AP and other AP of communicating from WLAN terminal to the interference traffic carrying capacity of this AP, is unifiedly converted to nondimensional interference level;
Each data that are scaled interference level are added, obtain the interference level of this AP work at present channel, to determine whether the working channel of this AP to switch according to the interference level of this AP work at present channel.
2. the WLAN according to claim 1 quality monitoring method of eating dishes without rice or wine, is characterized in that, described method also comprises:
Judge whether other AP are greater than setting thresholding to the interference signal intensity of this AP and/or with other AP that WLAN terminal communicates to the interference traffic carrying capacity of this AP;
As be greater than setting thresholding,, when this AP business is idle, this AP is switched to other available inoperative channels, so that the interference level of other available inoperative channels is monitored.
3. the WLAN according to claim 1 quality monitoring method of eating dishes without rice or wine, is characterized in that, described method also comprises:
When this AP heavy traffic, by other can with inoperative channel watch-dog is set the interference level of other available inoperative channels is monitored.
4. according to the quality monitoring method of eating dishes without rice or wine of the WLAN described in claim 2 or 3, it is characterized in that, described method also comprises:
The interference level of the interference level of the work at present channel monitoring and other available inoperative channels is compared;
The available channel that interference level is minimum is set to the working channel of this AP.
5. the WLAN according to claim 1 quality monitoring method of eating dishes without rice or wine, is characterized in that, self communication quality of described this AP comprises that average retransmission rate and this AP self that this AP self sends message on average successfully send the modulation rate of message.
6. the WLAN according to claim 2 quality monitoring method of eating dishes without rice or wine, is characterized in that, the parameter of other available inoperative channel monitorings is comprised to the end of the available inoperative channel that this AP is switched to makes an uproar and the interference signal intensity of other AP to this AP.
7. the WLAN quality monitoring device of eating dishes without rice or wine, is characterized in that, comprising:
Data capture unit, for obtaining other AP that make an uproar in the end of an AP work at present channel, self communication quality of this AP, other AP communicate to the interference signal intensity of this AP with WLAN terminal interference traffic carrying capacity to this AP;
Data reduction unit, be used to the end of this AP work at present channel obtaining to make an uproar, self communication quality of this AP, other AP distribute respectively different weights to the interference signal intensity of this AP and other AP of communicating from WLAN terminal to the interference traffic carrying capacity of this AP, is unifiedly converted to nondimensional interference level;
Interference level determining unit, for each data that are scaled interference level are added, obtains the interference level of this AP work at present channel, to determine whether the working channel of this AP to switch according to the interference level of this AP work at present channel.
8. the WLAN according to claim 7 quality monitoring device of eating dishes without rice or wine, is characterized in that, described device also comprises:
Judging unit, for judging whether other AP are greater than setting thresholding to the interference signal intensity of this AP and/or with other AP that WLAN terminal communicates to the interference traffic carrying capacity of this AP;
Switch unit, for being greater than setting thresholding and this AP business during the free time, is switched to other available inoperative channels by this AP, so that the interference level of other available inoperative channels is monitored.
9. the WLAN according to claim 8 quality monitoring device of eating dishes without rice or wine, is characterized in that, described device also comprises:
Interference level comparing unit, for the interference level of the interference level of the work at present channel monitoring and other available inoperative channels is compared, and the minimum available channel of interference level is set to the working channel of this AP.
10. the WLAN according to claim 7 quality monitoring device of eating dishes without rice or wine, is characterized in that, self communication quality of described this AP comprises that average retransmission rate and this AP self that this AP self sends message on average successfully send the modulation rate of message.
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