CN103957586B - The power regulating method and device of WLAN - Google Patents
The power regulating method and device of WLAN Download PDFInfo
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- CN103957586B CN103957586B CN201410183028.3A CN201410183028A CN103957586B CN 103957586 B CN103957586 B CN 103957586B CN 201410183028 A CN201410183028 A CN 201410183028A CN 103957586 B CN103957586 B CN 103957586B
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Abstract
The power regulating method and device of a kind of WLAN, methods described include step：The disturbed condition being subject to by access point scanning channel acquisition access point, and annoyance level of the access point to other adjacent area access points is assessed according to disturbed condition；Obtain the link boundary value of the work station of access point association；If access point is larger to the interference of other adjacent area access points, the power of described access point is reduced；If access point is moderate to the interference of other adjacent area access points, the power of described access point is kept；If access point is noiseless to other adjacent area access points, the power of described access point is raised.Selection of the present invention to AP is after all AP of the whole network disturbed condition is obtained, obtain what AP annoyance levels to caused by network determined by all AP disturbed conditions, and adjust the power of the AP with reference to the link boundary value at the AP related jobs station, so that the interference of the whole network reduces, the communication quality of network is effectively improved.
Description
Technical field
The present invention relates to wireless local area network technology field, more particularly to a kind of power regulating method of WLAN and
Device.
Background technology
WLAN (WLAN, Wireless Local Area Network) obtains more and more extensive answer in recent years
With the technology is based on IEEE (International Power electronic engineering association) 802.11 standards, and the standard is by a series of of IEEE formulations
Standard is, it is specified that wave point in WLAN between access point (AP, Access Point) and work station (STA, Station).
The propagation of wireless signal can cause wireless signal to exist in different directions by surrounding environment influence, the problems such as multipath
Extremely complex relaxation phenomenon, so the implementation of wlan network generally requires the careful network planning.Even in successful deployment without
After gauze network, the parameter adjustment of application stage is still essential, because wireless environment is continually changing, mobile
Interference brought such as barrier, the micro-wave oven to work etc. may all impact to the propagation of wireless signal, so channel,
The radio frequency resources such as transmission power allow for dynamically adjusting to adapt to the change of user environment.Such adjustment process is complicated
, it is necessary to which abundant technical experience and regularly artificial detection, cause very high management cost.
In current many wlan networks, equipment initialization is just initial by the transmission power of each communication equipment when upper electric
It is arranged at some predetermined level, such as the maximum transmission power of the equipment, and this is continuously maintained in subsequent whole communication
Set on power.If because the factors such as environment change or each network equipment changes relevant position, during initial power-on
Set transmission power may become too low or too high, then just need dynamically to adjust transmission power in the wlan environment
Level.Power Control in wlan network can be divided into STA Power Controls and AP Power Controls：Power Control to STA be
On the basis of ensureing user communication quality, reduce STA transmission power as far as possible, STA energy consumption is reduced, when extending STA work
Between；Power Control to AP is primarily to completing the covering to object space and reducing the interference between AP.
In highdensity WLAN coverage domain, many AP and SSID (Service Set Identifier, clothes are might have
Business identification sets), the interference between them is very serious.Due to the limited amount of wireless channel, so in high density overlay area
In general method for channel allocation is relied solely on, can not effectively reduce the interference of wlan system.
The content of the invention
Based on this, it is necessary in view of the above-mentioned problems, providing the power regulating method and device of a kind of WLAN, make it
The interference of wlan system can be reduced by adjusting AP transmission power, lift the performance of wlan system.
A kind of power regulating method of WLAN, including step：
The disturbed condition being subject to by access point scanning channel acquisition described access point, and assessed according to the disturbed condition
Described access point is to the annoyance level of other adjacent area access points, wherein the annoyance level includes, interference is larger, noiseless, disturbs
It is moderate；
The link boundary value of the work station of described access point association is obtained, wherein the link boundary value is according to the work
The performance number that station receives subtracts minimum acceptable performance number and determined；
If described access point other adjacent area access points are disturbed it is larger, according to the link boundary value and described access point
Minimum emissive power limits, and reduces the power of described access point；
If described access point is moderate to the interference of other adjacent area access points, the power of described access point is kept.
A kind of power adjustment apparatus of WLAN, including：
Annoyance level acquisition module, for obtaining the disturbed condition that is subject to of described access point by access point scanning channel,
And annoyance level of the described access point to other adjacent area access points is assessed according to the disturbed condition, wherein the annoyance level bag
Include interference it is larger, noiseless, interference it is moderate；
Link boundary value acquisition module, wherein the link boundary value of the work station for obtaining described access point association, institute
State the performance number that link boundary value receives according to the work station and subtract minimum acceptable performance number determination；
Power regulation module, for described access point to other adjacent area access points interference it is larger when, according to the link
Boundary value and the limitation of the minimum emissive power of described access point, reduce the power of described access point；In described access point to other
When adjacent area access point interference is moderate, the power of described access point is kept.
The power regulating method and device of WLAN of the present invention, obtain what AP in network was subject to by concentrating in real time
Disturbed condition and the disturbed condition to caused by network, it can dynamically select some AP in network and adjust its transmission power,
Selection to AP is after all AP of the whole network disturbed condition is obtained, and obtains AP by all AP disturbed conditions and network is caused
Annoyance level determine, and with reference to the link boundary value at the AP related jobs station adjust the power of the AP so that the whole network
Interference reduces, and is effectively improved the communication quality of network.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of the inventive method embodiment one；
Fig. 2 is the schematic flow sheet of the inventive method embodiment two；
Fig. 3 is the schematic flow sheet of the inventive method embodiment three；
Fig. 4 is the structural representation of apparatus of the present invention embodiment one；
Fig. 5 is the structural representation of apparatus of the present invention embodiment two；
Fig. 6 is the structural representation of apparatus of the present invention embodiment three.
Embodiment
The embodiment of the power regulating method of WLAN of the present invention is described in detail below in conjunction with the accompanying drawings.
As shown in figure 1, a kind of power regulating method of WLAN, including step：
S110, the disturbed condition that described access point is subject to is obtained by access point scanning channel, and according to the interference feelings
Condition assesses annoyance level of the described access point to other adjacent area access points, wherein the annoyance level includes disturbing larger, nothing to do
Disturb, disturb it is moderate；
The quality report of channel acquisition channel is scanned by AP, and channel quality assessment table, institute are built according to quality report
State channel quality assessment table and represent the AP disturbed conditions being subject to and the neighbor AP information detected；Channel quality assessment table measures
Content can include：Whether the frequency range has radar signal, receives average RSSI (the Received Signal Strength of bag
Indication, received signal strength indicator), Packet Error Ratio, the interference value that detects is (during the communication of time being interfered/total
Between), adjacent area AP is to loading condition of this AP disturbed condition and this AP channels etc.；
Each AP channel quality assessment table is obtained, then can be done by all AP channel quality assessment list processing
Assessment of scenario table is disturbed, the disturbed condition assesses table and represents annoyance levels of the AP to other adjacent area AP；Disturbed condition assesses table can
With including：AP signs number, AP radio-frequency modules identification number, AP working channels number, total annoyance level (interference to other adjacent areas AP
It is larger, interference is moderate, noiseless etc.), disturbed AP identification numbers, disturbed AP working channels number, AP is to being disturbed AP interference
It is worth (time of interference signal busy channel/total data call duration time), AP association STA to disturbed AP interference value, is disturbed
AP interference strength (the average RSSI for receiving interference signal) and level of interference (annoyance levels of the AP to disturbed AP) etc., its
Middle identification number and working channel number are AP attributes, represent AP identity information and the channel number of work, AP radio-frequency module marks
The number of showing represents the radio-frequency module numbering of the AP；
S120, the link boundary value for obtaining the work station that described access point associates, wherein the link boundary value is according to institute
State the performance number that work station receives and subtract minimum acceptable performance number determination；
802.11h agreements provide that STA can be to TPC (Transmit Power Control, transmission power control) Report
Information element is collected, and the element includes the transmit power and link border (link margin) value of this frame, i.e. work station institute
The security limit of proposition；Link boundary value is that the performance number (dBm) received subtracts minimum acceptable value (dBm)；
Current AP sends TPC Request frames by periodicity to STA, and STA responds TPC Report frames, Link
Margin values, build STA link border value list；
If S130, described access point are disturbed other adjacent area access points larger, according to the link boundary value and described connect
The minimum emissive power limitation of access point, the power of described access point is reduced, wherein minimum emissive power is each AP intrinsic category
Property, i.e. the minimum emissive power value that the AP can be provided；
If S140, described access point are moderate to the interference of other adjacent area access points, the power of described access point is kept.
When access point is noiseless to other adjacent area access points, it is understood that there may be the less problem of the switch-in point transmitting power,
Network quality in order to better improve, in one embodiment, the embodiment of the present invention can also include step：
If described access point is noiseless to other adjacent area access points, limited according to the maximum transmission power of described access point,
The power of described access point is raised, wherein maximum transmission power is each AP build-in attribute, i.e., the maximum that the AP can be provided
Transmission power level, it is configured usually as parameter configuration.
Annoyance level of the described access point to other adjacent area access points, i.e. basis are assessed according to disturbed condition in step S110
Channel quality assessment table obtains disturbed condition and assesses table, can be realized according to method known in the state of the art, for example, in a reality
Apply in example, the process of disturbed condition assessment table is established according to channel quality assessment table to be included：
After the channel quality assessment table for updating AP_0 (interfering APs of present analysis), trigger and remember in its channel quality assessment table
N number of homogeneous-frequency adjacent-domain AP_i (i=1,2,3 ..., N) of record updates its disturbed condition assessment table；
The disturbed condition of the information copy of AP_i in AP_0 adjacent area AP lists to AP_i is assessed in table, gauge outfit is replaced by
AP_0；
Timestamp is added in AP_0 items in AP_i disturbed condition assessment table；
Calculate AP_i level of interference and be recorded in position corresponding to AP_0 items in AP_i disturbed condition assessment table；
After N number of homogeneous-frequency adjacent-domain AP_i disturbed condition is assessed into table renewal, AP_0 is assessed to all adjacent area AP_i's
Annoyance level.
The step of level of interference for wherein calculating AP_i, includes：
Judge that interference of the AP_0 to AP_i takes whether duration is more than AP interference duration threshold values, if, it is believed that AP_i is done
Disturb it is larger, otherwise enter in next step；Wherein interference takes the time span that duration represents busy channel；
Judge that whether AP_i receives AP_0 RSSI more than AP interference received power thresholds, if, it is believed that AP_i is done
Disturb it is larger, otherwise enter in next step；
Judge that interference of the STA of AP_0 associations to AP_i takes whether duration is more than STA interference duration threshold values, if so, recognizing
It is moderate for the interference to AP_i, otherwise it is assumed that the interference to AP_i is smaller.
Assess AP_0 includes to the step of all adjacent area AP_i annoyance level：
Whether S111, the disturbed condition assessment table for judging AP_0 are empty, if it is empty, illustrate that AP_0 is not caused to adjacent area AP_i
Interference, into step S117；If non-NULL, illustrate that AP_0 interferes to adjacent area AP_i, into step S112；
S112, judge that the level of interference in AP_0 disturbed condition assessment tables with the presence or absence of AP_i is that interference is larger, if so, saying
Bright some adjacent area AP_i receive larger interference, into step S113, otherwise into step S114；
S113, in AP_0 disturbed condition assesses table, AP_i level of interference is whether the larger ratio of interference not small
In high interference threshold value, if into step S115, otherwise into step S116；Wherein described ratio refers to that level of interference is dry
Disturb larger AP_i and AP_0 all adjacent area AP_i ratio；
S114, in AP_0 disturbed condition assesses table, AP_i level of interference is whether the less ratio of interference is more than
Low interference threshold, if so, interference of the explanation AP_0 to cycle adjacent area AP_i is smaller, into step S117, otherwise into step
S116；Wherein described ratio refers to that level of interference is the ratio for all adjacent area AP_i for disturbing less AP_i and AP_0；
S115, AP_0 is arranged to disturb to adjacent area AP_i annoyance level it is larger；
S116：AP_0 is arranged to disturb to adjacent area AP_i annoyance level moderate；
S117：AP_0 is arranged to noiseless to adjacent area AP_i annoyance level.
When interference of the AP to adjacent area AP is larger, it is necessary to according to link boundary value and the minimum emissive power of described access point
Limitation, the power of the AP is reduced, cause coverage hole in order to avoid reducing AP power, in one embodiment, step S130
The middle reduction AP power can include：
If the link boundary value of S131, each work station real-time update, and the link boundary value is all higher than chain
Road boundary threshold and default step-length and, then the power of described access point is reduced, wherein link boundary threshold expression work
The threshold value that station is had been in the weaker environment of receiving power；
TPC information gatherings are periodic, are controlled by TPC information gatherings cycle timer, and the cycle reaches, just by two
Individual timer (cycle timer and overtime timer) resets, and starts the gatherer process of a new round, wherein TPC information gatherings time-out
Timer, the duration for carrying out TPC information gatherings every time is used to specify, stops collection TPC information and reporting links after time-out
The measurement report of boundary value；The default step-length need to support 3dB step-lengths, also optional support 1dB or 2dB step-lengths；
If the link boundary value of S132, part work station real-time update, or link boundary value be present and be not more than
The link boundary threshold and the default step-length and, then do not reduce the power of described access point；
If TPC information gathering overtime timers expire, but still have STA not update its link border in link table boundary value
Value, it is believed that network state now is bad, or the communication quality between these STA and AP is poor, now retains these
TPC information original STA, and " link table boundary value more new state " is arranged to " part updates ", AP power is not reduced.
When AP is noiseless to other adjacent area AP, is limited according to AP maximum transmission power, raise the AP power, in order to
Avoiding AP power from raising, back loading is excessive, and in one embodiment, the AP power is raised in step S150 to be included：
If the present load of the AP is larger, avoids power from being further added by the load of the AP after raising, make AP load excessives, then
The power of the AP is kept, otherwise raises the power of the AP.
The present invention blind area and user can also occur by the acquisition of real-time vulnerability information and TPC information in network
During the poor situation of communication quality, corresponding AP power is dynamically adjusted, come network black spots caused by making up and improving now and logical
Believe the situation of degradation, wherein blind area Producing reason includes：AP failures, AP transmission powers are too small etc..For AP failures
Situation, as shown in Fig. 2 method provided by the invention is：
S210, the adjacent area access point for obtaining failure access point；
AC (Access Controller, access controller) obtains failure AP by heartbeat message mechanism, that is, uses
CAPWAP(Control And Provisioning of Wireless Access Points Protocol
Specification, the WAP of control and configuration) agreement communicated, and AC is periodically sent and once inquired, AP is answered
Answer, to represent that AP just in normal work, represents that AP fails if AP dont answers；It can be obtained and failed by channel quality assessment table
AP adjacent area AP, can also be achieved other ways；
S220, obtain from the adjacent area access point be not maximum transmission power new access point；
S230, the new access point is increased to maximum transmission power；
Poll failure AP all adjacent area AP, if adjacent area AP has reached maximum transmission power, keep the power, otherwise will
Adjacent area AP forces to rise to maximum transmission power, forces not considering AP loading condition and disturbed condition during increased wattage.
If STA communication qualities are in poor state for a long time, now may be too small due to AP transmission powers, exist and cover
Lid blind area, for the too small situation of AP transmission powers, as shown in figure 3, method provided by the invention is：
The link boundary value of the work station of S310, cycle more new access point association；
Cycle gathers AP TPC information, and updates AP associations STA link boundary value；
, will if the number that the link boundary value of S320, work station is less than the link boundary threshold is more than preset times
The work station is labeled as failure work station；
All STA of poll AP associations, the link boundary value for recording each STA are less than the number of link boundary threshold, when
When the number of record is more than preset times, illustrate that this STA is in the less environment of receiving power for a long time, or this STA may locate
In coverage hole or positioned at the edge of blind area, by the STA labeled as failure STA, done to judge whether to need to adjust AP power
Prepare；
S330, judge unsuccessfully whether the number of work station is more than preset number in the work station that described access point associates, if
Be, and the load of described access point and interference to other adjacent area access points less, described access point be not reaching to maximum hair
Power is penetrated, then into step S340, otherwise into step S350；
When failure STA numbers be more than preset number when, in order to avoid raise AP power adjacent area AP is caused larger interference or
The AP load excessives etc. are, it is necessary to consider that the load of the AP and disturbed condition determine the need for raising again the power of the AP；It is described
It is moderate and noiseless to disturb to adjacent area AP annoyance level that AP disturbs other adjacent areas AP little situation to include the AP；If
The AP has been maximum transmission power, then keeps original power of the AP, now can be by increasing the sides of AP nodes in this place
Method solves the problems, such as coverage hole；
S340, the power for raising described access point；
S350, adjust without power.
If AP is chronically at overload, and when can not carry out any load balanced measure, the present invention also provides one
Kind method, can reduce overload AP load.In one embodiment, if the load excessive of access point, described access point is reduced
Power, if described access point is minimum emissive power, keep the power of described access point constant；When overload AP is minimum transmitting
During power, part STA can be sent and go operation associated, force it to depart from overload AP.
In order to avoid frequently carrying out power adjustment to AP, the experience of user is reduced, present invention also offers a kind of method, uses
To ensure after certain power adjustment, transmission power is allowed to keep the stable state of certain time.In one embodiment, reduce
Or before the step of rise access point power, step can also be included：
Set power to keep timer, judge that the power keeps whether timer reaches preset time, if so, then reducing
Or rise described access point power, otherwise adjusted without power, wherein the power keeps timer to be used to ensure that power exists
Stable state is kept in the preset time；
After the step of reducing or raising described access point power, step can also be included：
Keep timer to reset the power, restart timing.
After a power adjustment has been performed, startup power keeps timer, is protected if issuing power during power adjustment commands
Hold timer and do not reach preset time, be then not responding to this power adjustment.Power keeps timer to be arranged on AC, can also set
Put in AP, if being arranged on AC, do not issue control command to AP, if being arranged on AP, be not responding to the power adjustment life that AC is issued
Order.
Based on same inventive concept, the present invention also provides a kind of power adjustment apparatus of WLAN, with reference to attached
Figure is described in detail to the embodiment of apparatus of the present invention.
As shown in figure 4, a kind of power adjustment apparatus of WLAN, including：
Annoyance level acquisition module 100, for the interference feelings being subject to by access point scanning channel acquisition described access point
Condition, and annoyance level of the described access point to other adjacent area access points is assessed according to the disturbed condition, wherein the interference journey
Degree include interference it is larger, noiseless, disturb it is moderate；
Link boundary value acquisition module 200, the link boundary value of the work station for obtaining described access point association, wherein
The performance number that the link boundary value receives according to the work station subtracts minimum acceptable performance number and determined；
Power regulation module 300, for described access point to other adjacent area access points interference it is larger when, according to the chain
Roadside dividing value and the limitation of the minimum emissive power of described access point, reduce the power of described access point；In described access point to it
When its adjacent area access point interference is moderate, the power of described access point is kept.
When access point is noiseless to other adjacent area access points, it is understood that there may be the less problem of the switch-in point transmitting power,
Network quality in order to better improve, in one embodiment, power regulation module 300 are additionally operable in described access point to other
When adjacent area access point is noiseless, limited according to the maximum transmission power of described access point, raise the power of described access point.
When interference of the AP to adjacent area AP is larger, it is necessary to according to link boundary value and the minimum emissive power of described access point
Limitation, the power of the AP is reduced, cause coverage hole in order to avoid reducing AP power, in one embodiment, the power
The power that adjusting module 300 reduces described access point includes：
If the link boundary value of each work station real-time update, and the link boundary value is all higher than link border
Threshold value and default step-length and, then the power of the reduction of power regulation module 300 described access point, wherein the link border
Threshold value represents the threshold value that work station is had been in the weaker environment of receiving power；
If the link boundary value of part work station real-time update, or link boundary value be present and be not more than the chain
Road boundary threshold and the default step-length and, then the power regulation module 300 does not reduce the power of described access point.
When AP is noiseless to other adjacent area AP, is limited according to AP maximum transmission power, raise the AP power, in order to
Avoid AP power rise back loading excessive, in one embodiment, the work(of the rise of power regulation module 300 described access point
Rate includes：
If the present load of described access point is larger, the power regulation module 300 keeps the power of described access point, no
Then the power regulation module 300 raises the power of described access point.
The present invention blind area and user can also occur by the acquisition of real-time vulnerability information and TPC information in network
During the poor situation of communication quality, corresponding AP power is dynamically adjusted, come network black spots caused by making up and improving now and logical
Believe the situation of degradation, wherein blind area Producing reason includes：AP failures, AP transmission powers are too small etc..For AP failures
Situation, as shown in figure 5, apparatus of the present invention can also include：
Adjacent area access point acquisition module 400, for obtaining the adjacent area access point of failure access point；
New access point acquisition module 500, it is not the new of maximum transmission power for being obtained from the adjacent area access point
Access point；
The new access point is increased to maximum transmission power by the power regulation module 300.
If STA communication qualities are in poor state for a long time, now may be too small due to AP transmission powers, exist and cover
Lid blind area, for the too small situation of AP transmission powers, as shown in fig. 6, apparatus of the present invention can also include：
Link boundary value update module 600, the link boundary value for the work station of cycle more new access point association；
Work station mark module 700, for being less than the number of the link boundary threshold in the link boundary value of work station
During more than preset times, by the work station labeled as failure work station；
Comparison module 800, for compare described access point association work station in fail work station number and present count
Purpose size, if the number of failure work station is more than the preset number, and the load of described access point and to other adjacent areas
The interference of access point is little, described access point is not reaching to maximum transmission power, then the power regulation module 300 raises described
The power of access point, is otherwise adjusted without power.
In order to avoid frequently carrying out power adjustment to AP, the experience of user is reduced, apparatus of the present invention can also include timing
Device module, for setting power to keep timer, judge that the power keeps whether timer reaches preset time, if so, then
The power regulation module 300 reduces or raised described access point power, and otherwise the power regulation module 300 is without power
Adjustment, wherein the power keeps timer to be used to ensure that power keeps stable state in the preset time；
After the power regulation module 300 reduces or raised the power of described access point, timer module be additionally operable to by
The power keeps timer to reset, and restarts timing.
If AP is chronically at overload, and when any load balanced measure can not be carried out, power adjustment of the present invention
Module 300 is additionally operable to, in the load excessive of access point, reduce the power of described access point, if described access point is minimum transmitting
Power, the power regulation module 300 keep the power of described access point constant.
The other technical characteristics of apparatus of the present invention are identical with the inventive method, will not be described here.
Embodiment described above only expresses the several embodiments of the present invention, and its description is more specific and detailed, but simultaneously
Therefore the limitation to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for one of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the guarantor of the present invention
Protect scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (8)
1. a kind of power regulating method of WLAN, it is characterised in that including step：
The disturbed condition being subject to by access point scanning channel acquisition described access point, and according to being assessed the disturbed condition
Access point is to the annoyance level of other adjacent area access points, wherein the annoyance level includes, interference is larger, noiseless, interference is suitable
In；
The link boundary value of the work station of described access point association is obtained, wherein the link boundary value connects according to the work station
The performance number received subtracts minimum acceptable performance number and determined；
If described access point is larger to the interference of other adjacent area access points, according to the link boundary value and the minimum of described access point
Transmission power limits, and reduces the power of described access point；If the link boundary value of each work station real-time update, and institute
State link boundary value be all higher than link boundary threshold and default step-length and, then the power of reduction described access point, wherein described
Link boundary threshold represents the threshold value that work station is had been in the weaker environment of receiving power；
If described access point is moderate to the interference of other adjacent area access points, the power of described access point is kept；
If described access point is noiseless to other adjacent area access points, limited according to the maximum transmission power of described access point, rise
The power of described access point.
2. the power regulating method of WLAN according to claim 1, it is characterised in that reduce described access point
Power includes：
If the link boundary value of part work station real-time update, or link boundary value be present and be not more than the chain roadside
Boundary's threshold value and the default step-length and, then do not reduce the power of described access point；
The power of rise described access point includes：
If the present load of described access point is larger, the power of described access point is kept, otherwise raises the power of described access point.
3. the power regulating method of WLAN according to claim 1, it is characterised in that also including step：
Obtain the adjacent area access point of failure access point；
Obtained from the adjacent area access point be not maximum transmission power new access point；
The new access point is increased to maximum transmission power；
And/or：
The link boundary value of the work station of cycle more new access point association；
If the number that the link boundary value of work station is less than the link boundary threshold is more than preset times, by the work station mark
It is designated as unsuccessfully work station；
Judge unsuccessfully whether the number of work station is more than preset number in the work station of described access point association, if so, and described
The load of access point and interference to other adjacent area access points less, described access point be not reaching to maximum transmission power, then
The power of described access point is raised, is otherwise adjusted without power.
4. the power regulating method of the WLAN according to claims 1 to 3 any one, it is characterised in that also wrap
Include step：If the load excessive of access point, reducing the power of described access point, if described access point is minimum emissive power, protect
The power for holding described access point is constant；
Before the step of reducing or raising access point power, in addition to step：
Set power to keep timer, judge that the power keeps whether timer reaches preset time, if so, then reducing or rising
High described access point power, is otherwise adjusted without power, wherein the power keeps timer to be used to ensure power described
Stable state is kept in preset time；
After the step of reducing or raising described access point power, in addition to step：
Keep timer to reset the power, restart timing.
A kind of 5. power adjustment apparatus of WLAN, it is characterised in that including：
Annoyance level acquisition module, for obtaining the disturbed condition that is subject to of described access point, and root by access point scanning channel
Annoyance level of the described access point to other adjacent area access points is assessed according to the disturbed condition, wherein the annoyance level includes doing
Disturb it is larger, noiseless, interference it is moderate；
Link boundary value acquisition module, the link boundary value of the work station for obtaining described access point association, wherein the chain
The performance number that roadside dividing value receives according to the work station subtracts minimum acceptable performance number and determined；
Power regulation module, for described access point to other adjacent area access points interference it is larger when, according to the link border
The limitation of the minimum emissive power of value and described access point, reduce the power of described access point；In described access point to other adjacent areas
When access point interference is moderate, the power of described access point is kept；When described access point is noiseless to other adjacent area access points, root
Limited according to the maximum transmission power of described access point, raise the power of described access point；If the link border of each work station
Value real-time update, and the link boundary value be all higher than link boundary threshold and default step-length and, then the power tune
Mould preparation block reduces the power of described access point, wherein the link boundary threshold represents work station, to have been at receiving power weaker
Threshold value in environment.
6. the power adjustment apparatus of WLAN according to claim 5, it is characterised in that the power regulation module
Reducing the power of described access point includes：
If the link boundary value of part work station real-time update, or link boundary value be present and be not more than the chain roadside
Boundary's threshold value and the default step-length and, then the power regulation module does not reduce the power of described access point；
The power of the power regulation module rise described access point includes：
If the present load of described access point is larger, the power regulation module keeps the power of described access point, otherwise described
Power regulation module raises the power of described access point.
7. the power adjustment apparatus of WLAN according to claim 5, it is characterised in that also include：
Adjacent area access point acquisition module, for obtaining the adjacent area access point of failure access point；
New access point acquisition module, for obtained from the adjacent area access point be not maximum transmission power new access point；
The new access point is increased to maximum transmission power by the power regulation module；
And/or：
Link boundary value update module, the link boundary value for the work station of cycle more new access point association；
Work station mark module, the number for being less than the link boundary threshold in the link boundary value of work station are more than default
During number, by the work station labeled as failure work station；
Comparison module, for compare described access point association work station in fail work station number and preset number it is big
It is small, if the number of failure work station is more than the preset number, and the load of described access point and to other adjacent area access points
Interference less, described access point be not reaching to maximum transmission power, then power regulation module rise described access point
Power, otherwise adjusted without power.
8. the power adjustment apparatus of the WLAN according to claim 5 to 7 any one, it is characterised in that also wrap
Timer module is included, for setting power to keep timer, judges that the power keeps whether timer reaches preset time, if
It is that then the power regulation module reduces or raised described access point power, and otherwise the power regulation module is without power
Adjustment, wherein the power keeps timer to be used to ensure that power keeps stable state in the preset time；
After the power regulation module reduces or raises the power of described access point, timer module is additionally operable to the power
Keep timer to reset, restart timing；
The power regulation module is additionally operable to, in the load excessive of access point, reduce the power of described access point, if described connect
Access point is minimum emissive power, and the power regulation module keeps the power of described access point constant.
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| CN106162690A (en) * | 2015-04-03 | 2016-11-23 | 池州学院 | A kind of femtocell power variable mechanism |
| WO2016201693A1 (en) * | 2015-06-19 | 2016-12-22 | 华为技术有限公司 | Data transmission method and apparatus |
| CN107438283B (en) * | 2016-05-28 | 2021-07-13 | 富泰华工业（深圳）有限公司 | Personal hotspot device and method with WiFi power control function |
| WO2018000199A1 (en) * | 2016-06-28 | 2018-01-04 | 华为技术有限公司 | Method and apparatus for coordinating cell interference |
| CN108260196B (en) * | 2016-12-28 | 2021-03-09 | 中国移动通信集团北京有限公司 | Method and device for controlling transmitting power |
| EP3474610A1 (en) * | 2017-10-18 | 2019-04-24 | INESC TEC - Instituto de Engenharia de Sistemas e Computadores, Tecnologia e Ciencia | Interference aware transmission power control method and device for ieee 802.11 based wireless network with nodes having a directional antenna |
| CN107995686B (en) * | 2017-12-07 | 2020-09-25 | 锐捷网络股份有限公司 | Wireless local area network channel allocation method, device and system |
| CN109889408B (en) * | 2019-02-28 | 2021-03-19 | 广东美的厨房电器制造有限公司 | Method, device, equipment and medium for resisting interference of wireless signals |
| CN111278095B (en) * | 2020-01-20 | 2023-07-07 | 深圳市潮流网络技术有限公司 | Wireless access point power adjustment method and device, computing equipment and storage medium |
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