CN106131940A - A kind of transmission power adjustment method and device - Google Patents
A kind of transmission power adjustment method and device Download PDFInfo
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- CN106131940A CN106131940A CN201610538212.4A CN201610538212A CN106131940A CN 106131940 A CN106131940 A CN 106131940A CN 201610538212 A CN201610538212 A CN 201610538212A CN 106131940 A CN106131940 A CN 106131940A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/18—TPC being performed according to specific parameters
- H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
- H04W52/247—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters where the output power of a terminal is based on a path parameter sent by another terminal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/18—TPC being performed according to specific parameters
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
Abstract
The embodiment of the invention discloses a kind of transmission power adjustment method and device, an AP determines at least one the 2nd AP in the presence of the first neighbor list of self；In second neighbor list of at least one the 2nd AP described preserved in inquiry wireless controller AC respectively, if there is an AP；Query Result is shown, and there is the 2nd AP corresponding to second neighbor list of an AP is defined as effective neighbor AP of an AP；According to effective neighbor AP to self carrying out launching the adjustment of power.Visible, by adjust for AP screening launch power institute according to effective neighbor AP, it is possible to reduce AP adjusts the quantity of neighbor AP of required traversal when launching power, thus avoids the situation that amount of calculation that on AP traversal AC, all neighbor AP cause is excessive；It addition, effective neighbor AP of an AP is the symmetrical neighbours of an AP, application this programme can ensure that the symmetry of neighbor AP, it is to avoid asymmetric neighbours adjust problem.
Description
Technical field
The present invention relates to radio network technique field, particularly to a kind of transmission power adjustment method and device.
Background technology
Along with the development of radio network technique, TPC (Transmit Power Control, transmitting power control) skill
Art is widely used.Traditional radio frequency power control method is statically by AP (Access Point, WAP)
Transmitting power setting be maximum, merely pursue signal cover, but power excessive may cause other wireless
Equipment causes unnecessary interference.And apply TPC technology can select the signal cover that can take into account each AP can
Meet the best power of use demand.
Application TPC technology, it is possible to realize according to real-time wireless environment situation, dynamically adjust the transmitting power of AP.Tool
Body, when AP detects increase neighbor AP or certain neighbor AP breaks down or during off-line, this AP can travel through AC (Access
Controller, wireless controller) neighbor list of upper all online AP, determine the neighbor AP of this AP, detect according to neighbor AP
To the signal intensity size of this AP, the neighbor AP determined is ranked up, according to ranking results, sets neighbours for each neighbor AP
Coefficient, according to specify neighbor AP (neighbor AP hereinafter referred to as specified) corresponding to neighbor coefficient detect this AP signal intensity and
The comparative result adjustment its own transmission power of the threshold value pre-set:
If the quantity of the neighbor AP of this AP reaches setting value, this AP can adjust transmitting power according to following principle: as
The neighbor AP that fruit is specified detects the signal intensity maximum more than the threshold interval pre-set of this AP, then this AP can subtract
Little its own transmission power；If the neighbor AP specified detects the signal intensity of this AP less than the threshold interval pre-set
Little value, then this AP can increase its own transmission power；
If the quantity of the neighbor AP of this AP is not up to setting value, its own transmission power can be adjusted to maximum by this AP.
But, application TPC technology carries out power adjustment, and AP can travel through the neighbor list of all online AP, amount of calculation on AC
Excessive, affect equipment performance.
Summary of the invention
The purpose of the embodiment of the present invention is to provide a kind of transmission power adjustment method and device, it is to avoid AP carries out launching merit
The situation that when rate adjusts, on traversal AC, the amount of calculation that causes of all neighbor AP is excessive.
For reaching above-mentioned purpose, the embodiment of the invention discloses a kind of transmission power adjustment method, be applied to first wireless
Access point AP, including:
Determine at least one the 2nd AP in the presence of first neighbor list of a described AP；
In second neighbor list of at least one the 2nd AP described preserved in inquiry wireless controller AC respectively, if deposit
At a described AP；
Query Result is shown, and the 2nd AP corresponding to the second neighbor list that there is a described AP is defined as described
Effective neighbor AP of one AP；
Judge that the quantity of effective neighbor AP of a described AP, whether less than predetermined threshold value, launches power if it is, increase；
If it does not, determine target effective neighbor AP from described effective neighbor AP, and determine described target effective neighbor AP
The signal intensity of a detected described AP；
Judge that whether the signal intensity of a described AP detected by described target effective neighbor AP is in pre-set interval；
When judged result is no, adjusts and launch power.
For reaching above-mentioned purpose, the embodiment of the invention also discloses a kind of transmitting power adjustment apparatus, be applied to the first nothing
Line access point AP, including:
First determines module, in the presence of determining first neighbor list of a described AP at least one second
AP；
Enquiry module, for inquiring about second neighbor list of at least one the 2nd AP described preserved in wireless controller AC
In, if there is a described AP；
Second determines module, for Query Result shows to exist the corresponding to second neighbor list of a described AP
Two AP are defined as effective neighbor AP of a described AP；
First judge module, for judging that whether the quantity of effective neighbor AP of a described AP is less than predetermined threshold value；
Increase module, for when described first judge module judged result is for being, increases and launch power；
3rd determines module, for when described first judge module judged result is no, from described effective neighbor AP
Determine target effective neighbor AP,
4th determines module, strong for determining the signal of the described AP detected by described target effective neighbor AP
Degree；
Second judge module, for judging the signal intensity of the described AP detected by described target effective neighbor AP
Whether in pre-set interval；
Adjusting module, for when described second judge module judged result is no, adjusts and launches power.
Application illustrated embodiment of the present invention, an AP determines at least one in the presence of the first neighbor list of self the
Two AP；In second neighbor list of at least one the 2nd AP described preserved in inquiry wireless controller AC respectively, if exist
Oneth AP；Query Result is shown, and there is the 2nd AP corresponding to second neighbor list of an AP is defined as the effective of an AP
Neighbor AP；Then according to effective neighbor AP to self carrying out launching the adjustment of power.Visible, launch merit by adjusting for AP screening
Rate institute according to effective neighbor AP, it is possible to reduce AP adjusts the quantity of neighbor AP of required traversal when launching power, thus avoids
The situation that amount of calculation that on AP traversal AC, all neighbor AP cause is excessive；It addition, effective neighbor AP of an AP is first
The symmetrical neighbours of AP, application this programme can ensure that the symmetry of neighbor AP, it is to avoid asymmetric neighbours adjust problem.
Certainly, arbitrary product or the method for implementing the present invention must be not necessarily required to reach all the above excellent simultaneously
Point.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to
Other accompanying drawing is obtained according to these accompanying drawings.
The schematic flow sheet of a kind of transmission power adjustment method that Fig. 1 provides for the embodiment of the present invention；
A kind of structural representation launching power adjustment apparatus that Fig. 2 provides for the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.Based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under not making creative work premise
Embodiment, broadly falls into the scope of protection of the invention.
In order to solve prior art problem, embodiments provide a kind of transmission power adjustment method and device, should
For the first wireless access point AP, wherein, the arbitrary AP, namely arbitrary AP under an AP is managed by wireless controller AC
To perform, as an AP, the method that the embodiment of the present invention is provided.
A kind of transmission power adjustment method provided the embodiment of the present invention first below is described in detail.
In illustrated embodiment of the present invention, an AP carry out launch power adjust trigger condition (namely an AP holds
The trigger condition of the method that the row embodiment of the present invention is provided) may include that
Detect and neighbor AP is increased or decreased；Or, reach predetermined time；Or, reach predetermined time and increasing detected
Add deduct few neighbor AP.
It is understood that when an AP detects and neighbor AP is increased or decreased, effective neighbor AP of an AP may
Change, and launch the adjustment of power and detect that the signal intensity of this AP is the most relevant with the number of neighbor AP and neighbor AP
System, therefore, when an AP detects and neighbor AP is increased or decreased, an AP may need to readjust transmitting power.
Another kind of situation, it is assumed that certain AP frequently reaches the standard grade, rolls off the production line, and makes an AP detect always and neighbor AP is increased or decreased,
Now, if applying above-mentioned trigger condition, then an AP can carry out launching the adjustment of power continually.Therefore, it can application another
A kind of trigger condition, the most often reaches predetermined time, performs this transmission power adjustment method.
It is, of course, also possible to above two trigger condition is combined, i.e. when reaching predetermined time and increase being detected
Or when reducing neighbor AP, perform this transmission power adjustment method.
When meeting above-mentioned transmitting power adjustment trigger conditions, an AP performs the transmitting power that the embodiment of the present invention provides
Method of adjustment.
As it is shown in figure 1, a kind of transmission power adjustment method that the embodiment of the present invention is provided, may include steps of:
S101: determine at least one the 2nd AP in the presence of first neighbor list of a described AP.
AC can store the neighbor list of all AP under this AC management.Such as, when AP1 detects AP2, AP1 can be by
AP2 reports AC, AP2 and is just present in the neighbor list of AP1.
Oneth AP to the AC of management the oneth AP inquires about the neighbor list of this AP, determines in first neighbor list of this AP and deposit
The 2nd AP.Assume that the neighbor list inquiring an AP of AC storage includes: AP2, AP3 and AP4.Wherein, the 2nd AP
AP, the 2nd AP determined here beyond removing the oneth AP under being managed by AC are the neighbor AP of an AP.Require emphasis
It is that " second " in " first " and " the 2nd AP " in " AP " is only from distinguishing this AP and corresponding neighbours nominally
AP, should not have any limiting meaning；It is similar to, " first " in " the first neighbor list " and follow-up " the second neighbours
List " in " second " be only the neighbor list from name this AP of differentiation and the neighbor list of corresponding neighbor AP, and
Should not have any limiting meaning.
It addition, the building mode of the first neighbor list, the second neighbor list can use any one side of the prior art
Formula, owing to not being the inventive point of the present invention, does not repeats at this.
S102: in second neighbor list of at least one the 2nd AP described preserved in inquiry wireless controller AC respectively,
Whether there is a described AP, if it is, perform S103.
Oneth AP to AC inquires about second neighbor list of AP2, AP3 and AP4 respectively, it is judged that the second of AP2, AP3 and AP4
Whether neighbor list exists an AP.That is, it is judged that whether AP2, AP3 and AP4 are symmetrical neighbours with an AP.
Symmetrical neighbours refer to that the most adjacent AP of AP1 and AP2, AP1 are able to detect that AP2, and AP2 is reported AC, because of
This AP2 is present in the neighbor list of AP1；Meanwhile, AP2 also can detect AP1, and AP1 is reported AC, and therefore AP1 is also
It is present in the neighbor list of AP2.In this case, AP1 Yu AP2 is symmetrical neighbours.
Asymmetric neighbours refer to that AP1 is able to detect that AP2, and AP2 is reported AC, and therefore AP2 is present in the neighbour of AP1
Occupy in list, but AP2 cannot detect AP1, during therefore AP1 cannot occur in the neighbor list of AP2.AP1 and AP2 is the most right
Claim neighbours (asymmetric neighbours).
For AP, when there are asymmetric neighbours, during adjusting transmitting power, there will be an AP reduce
Launch power, and another AP increases the situation launching power.In actual applications, when AP being disposed, it is generally recognized that each
The transmitting power difference of AP is little, thus disposes AP uniformly.Reduce if there is said one AP and launch power, and
Another AP increases the situation launching power, then have impact on the normal deployment to AP, can cause subregion overflow, part
Region does not has the situation of signal.
S103: Query Result is shown, and the 2nd AP corresponding to the second neighbor list that there is a described AP is defined as institute
State effective neighbor AP of an AP.
Assume that second neighbor list of AP2 includes: AP3 and AP4；Second neighbor list of AP3 includes: AP1 and
AP4；Second neighbor list of AP4 includes: AP1 and AP3.It is to say, looking in second neighbor list of AP3 and AP4
Ask result to show to there is an AP, AP3 and AP4 is defined as effective neighbor AP of an AP.Adjust at follow-up transmitting power
During, an AP carries out launching power according to effective neighbor AP (AP3 and AP4) and adjusts.
Oneth AP carries out launching power according only to effective neighbor AP and adjusts, it is possible to reduce the number of the neighbor AP of its required traversal
Amount, thus avoid the situation that on AP traversal AC, the amount of calculation that causes of all neighbor AP is excessive；It addition, effective neighbours of an AP
AP is the symmetrical neighbours of an AP, and application this programme can ensure that the symmetry of neighbor AP, it is to avoid asymmetric neighbours adjust and ask
Topic.
Concrete, the process that an AP carries out launching power adjustment according to effective neighbor AP is as follows:
S104: judge whether the quantity of effective neighbor AP of a described AP is less than predetermined threshold value, if it is, perform
S105, if it does not, perform S106.
S105: increase and launch power.
It will be appreciated by persons skilled in the art that if the quantity of effective neighbor AP of an AP is less than predetermined threshold value,
It is to say, the AP quantity that an AP detects is fewer than expection, in this case, an AP needs to increase and launches power, with
More AP is made to be able to detect that the signal of an AP.
Wherein, the concrete increase launching power can determine according to prior art, does not limits at this.
S106: determine target effective neighbor AP from described effective neighbor AP.
Above-mentioned target effective neighbor AP can be all or part of effectively neighbor AP of the first AP.
As one embodiment of the present invention, from described effective neighbor AP, determine that target effective neighbor AP can be wrapped
Include:
Receive the selection instruction that user sends；
Selecting instruction according to described, from effective neighbor AP of a described AP, screening obtains target effective neighbor AP.
In the present embodiment, target effective neighbours can be determined according to the selection of user.
Assuming that effective neighbours of an AP include AP3 and AP4, user, according to practical situation, determines that an AP needs basis
Its own transmission power is adjusted by AP3, then the selection AP3 that an AP reception user sends is as the finger of target effective neighbours
Order, is defined as target effective neighbor AP by AP3.
As another embodiment of the invention, from described effective neighbor AP, determine that target effective neighbor AP can be wrapped
Include:
The size of the signal intensity of a described AP detected according to effective neighbor AP, described effective neighbor AP is arranged
Sequence；The effective neighbor AP that will be located in presetting ranking is defined as target effective neighbor AP.
Concrete, the size of the signal intensity of an AP can be detected according to effective neighbor AP, to described effective neighbours
AP is ranked up, and according to ranking results, sets the neighbor coefficient of each effective neighbor AP；Then by corresponding for default neighbor coefficient
Effectively neighbor AP is defined as target effective neighbor AP.
In the present embodiment, it is assumed that effective neighbor AP 3 and AP4 of an AP detects the signal intensity of an AP respectively
For-50dBm and-40dBm, AP3 and AP4 is ranked up, before AP4 comes, after AP3 comes, sets the neighbor coefficient of AP4 as 1,
The neighbor coefficient of AP3 is 2.
Default ranking is 2, then be defined as the suburb neighbor AP 3 that has of neighbor coefficient 2 correspondence for target effective neighbor AP.
S107: determine the signal intensity of a described AP detected by described target effective neighbor AP.
S108: judge that whether the signal intensity of a described AP detected by described target effective neighbor AP is in preset areas
Between, if it does not, perform S109.
If it is determined that whole effectively neighbor AP of an AP are target effective neighbor AP, then S108 is: judge an AP
The signal intensity of whole effectively AP detected by neighbor AP the most all in pre-set interval, if it does not, execution S109.
If applying above-mentioned embodiment, determining that AP3 is target effective neighbor AP, then judging this AP detected by AP3
Signal intensity the most all in pre-set interval.
If the signal intensity of the described AP detected by target effective neighbor AP is in pre-set interval, then an AP is not
Carrying out launching the adjustment of power, if not in pre-set interval, then an AP performs S109.
S109: adjust and launch power.
Concrete, described adjustment launches power, may include that
When the signal intensity of a detected described AP is more than the maximum of described pre-set interval, reduces and launch merit
Rate；When the signal intensity of a detected described AP is less than the minima of described pre-set interval, increases and launch power.
It should be noted that the concrete decrement of transmitting power and concrete increase can determine according to prior art,
Do not limit at this.
Applying embodiment illustrated in fig. 2 of the present invention, an AP determines in the presence of the first neighbor list of self at least one
Individual 2nd AP；In second neighbor list of at least one the 2nd AP described preserved in inquiry wireless controller AC respectively, if
There is an AP；Query Result is shown, and there is the 2nd AP corresponding to second neighbor list of an AP is defined as an AP's
Effectively neighbor AP；Then according to effective neighbor AP to self carrying out launching the adjustment of power.Visible, send out by adjusting for AP screening
Penetrate power institute according to effective neighbor AP, it is possible to reduce AP adjusts the quantity of neighbor AP of required traversal when launching power, thus
Avoid the situation that on AP traversal AC, the amount of calculation that causes of all neighbor AP is excessive；It addition, effective neighbor AP of an AP is
The symmetrical neighbours of the oneth AP, application this programme can ensure that the symmetry of neighbor AP, it is to avoid asymmetric neighbours adjust problem.
Being exemplified below, how the embodiment that the present invention provides solves traversal AC when AP carries out launching power adjustment causes
Amount of calculation excessive and asymmetric neighbours adjust problem.
Assume that AP1 is able to detect that AP3, AP2 are able to detect that AP1 and AP3, AP3 are able to detect that AP2 and AP3, as follows
Table:
The result of AP1 detection:
| Detection AP | Detected AP | Signal intensity SignalStrength |
| AP1 | AP3 | -61 |
| AP1 | Null | Null |
The result of AP2 detection:
| Detection AP | Detected AP | Signal intensity SignalStrength |
| AP2 | AP1 | -51 |
| AP2 | AP3 | -62 |
The result of AP3 detection:
| Detection AP | Neighbor list (detected AP) | Signal intensity SignalStrength |
| AP3 | AP1 | -63 |
| AP3 | AP2 | -54 |
As seen from the above table, for AP1, AP3 is its effective neighbor AP；For AP2, AP3 is its effective neighbours
AP；For AP3, AP1 and AP2 is its effective neighbor AP.
The adjustment process of AP1:
The first step: determine effective neighbor AP: AP3.
Assuming that predetermined threshold value is 1, the quantity of effective neighbor AP of this AP is not less than 1, continues executing with subsequent step.
Second step: the size of the signal intensity of this AP detected according to effective neighbor AP, is ranked up effective neighbor AP,
According to ranking results, setting the neighbor coefficient of each effective neighbor AP: in this example, only an effective neighbor AP, AP3 detects
Signal intensity to this AP is-63dBm, and the neighbor coefficient of AP3 is 1.
3rd step: effective neighbor AP that neighbor coefficient is 1 is defined as target effective neighbor AP, it is judged that target effective neighbours
Whether the signal intensity of this AP detected by AP (AP3) is in pre-set interval: assume that pre-set interval is (-74dBm ,-83dBm),
AP3 detects that the signal intensity of this AP is the-63dBm maximum more than pre-set interval, it is therefore desirable to completes to reduce and launches power.
As one embodiment of the present invention, when AP1 reduces transmitting power, a preset value can be reduced, such as every time
Reduce 3dBm every time, often reduce once, just AP3 being detected, the signal intensity of AP1 compares with pre-set interval, until detection
The signal intensity arrived is in the range of pre-set interval, and AP1 no longer reduces transmitting power.Certainly, if AP3 detects the letter of AP1
AP1 always more than the maximum of pre-set interval, is then launched power reduction to the minima configured for it by number intensity.
The adjustment process of AP2:
The first step: determine effective neighbor AP: AP3.
Assuming that predetermined threshold value is 1, the quantity of effective neighbor AP of this AP is not less than 1, continues executing with subsequent step.
Second step: the size of the signal intensity of this AP detected according to effective neighbor AP, is ranked up effective neighbor AP,
According to ranking results, setting the neighbor coefficient of each effective neighbor AP: in this example, only an effective neighbor AP, AP3 detects
Signal intensity to this AP is-54dBm, and the neighbor coefficient of AP3 is 1.
3rd step: effective neighbor AP that neighbor coefficient is 1 is defined as target effective neighbor AP, it is judged that target effective neighbours
Whether the signal intensity of this AP detected by AP (AP3) is in pre-set interval: assume that pre-set interval is (-74dBm ,-83dBm),
AP3 detects that the signal intensity of this AP is the-54dBm maximum more than pre-set interval, it is therefore desirable to completes to reduce and launches power.
The adjustment process of AP3:
The first step: determine effective neighbor AP: AP1 and AP2.
Assuming that predetermined threshold value is 1, the quantity of effective neighbor AP of this AP is not less than 1, continues executing with subsequent step.
Second step: the size of the signal intensity of this AP detected according to effective neighbor AP, is ranked up effective neighbor AP,
According to ranking results, set the neighbor coefficient of each effective neighbor AP: in this example, AP1 detect the signal intensity of this AP for-
The neighbor coefficient of 61dBm, AP1 is 1；AP2 detects that the signal intensity of this AP is-62dBm, and the neighbor coefficient of AP2 is 2.
3rd step: effective neighbor AP that neighbor coefficient is 2 is defined as target effective neighbor AP, it is judged that target effective neighbours
Whether the signal intensity of this AP detected by AP (AP2) is in pre-set interval: assume that pre-set interval is (-74dBm ,-83dBm),
AP2 detects that the signal intensity of this AP is the-62dBm maximum more than pre-set interval, it is therefore desirable to completes to reduce and launches power.
Corresponding, in existing TCP realizes, the adjustment process of each AP is as follows:
The adjustment process of AP1:
On the first step: AP1 traversal AC, the neighbor list of all online AP, inquires AP2 and AP3 and AP1 detected, by AP2
It is defined as neighbor AP with AP3, as shown in the table:
| Signal intensity SignalStrength | Detection AP | Detected AP |
| -51 | AP2 | AP1 |
| -63 | AP3 | AP1 |
Assuming that predetermined threshold value is 1, the quantity of effective neighbor AP of this AP is not less than 1, continues executing with subsequent step.
Second step: the size of the signal intensity of this AP detected according to neighbor AP, neighbor AP is ranked up, according to sequence
As a result, the neighbor coefficient of each neighbor AP is set:
As seen from the above table, AP2 detects that the signal intensity of this AP is-51dBm, and the neighbor coefficient of AP2 is 1, and AP3 detects
The signal intensity of this AP is-63dBm, and the neighbor coefficient of AP3 is 2.
3rd step: effective neighbor AP that neighbor coefficient is 2 is defined as target effective neighbor AP, it is judged that target effective neighbours
Whether the signal intensity of this AP detected by AP (AP3) is in pre-set interval: assume that pre-set interval is (-74dBm ,-83dBm),
AP3 detects that the signal intensity of this AP is the-63dBm maximum more than pre-set interval, it is therefore desirable to completes to reduce and launches power.
The adjustment process of AP2:
On the first step: AP2 traversal AC, the neighbor list of all online AP, inquires AP3 and AP2 detected, be defined as by AP3
Neighbor AP, as shown in the table:
| Signal intensity SignalStrength | Detection AP | Detected AP |
| -54 | AP3 | AP2 |
Assuming that predetermined threshold value is 1, the quantity of effective neighbor AP of this AP is not less than 1, continues executing with subsequent step.
Second step: the size of the signal intensity of this AP detected according to neighbor AP, neighbor AP is ranked up, according to sequence
As a result, the neighbor coefficient of each neighbor AP is set:
As seen from the above table, AP2 only inquires a neighbor AP, and the neighbor coefficient of AP3 is 1.
3rd step: effective neighbor AP that neighbor coefficient is 1 is defined as target effective neighbor AP, it is judged that target effective neighbours
Whether the signal intensity of this AP detected by AP (AP3) is in pre-set interval: assume that pre-set interval is (-74dBm ,-83dBm),
AP3 detects that the signal intensity of this AP is the-54Bm maximum more than pre-set interval, it is therefore desirable to completes to reduce and launches power.
The adjustment process of AP3:
On the first step: AP3 traversal AC, the neighbor list of all online AP, inquires AP2 and AP3 and AP1 detected, by AP2
It is defined as neighbor AP with AP3, as shown in the table:
| Signal intensity SignalStrength | Detection AP | Detected AP |
| -61 | AP1 | AP3 |
| -62 | AP2 | AP3 |
Assuming that predetermined threshold value is 1, the quantity of effective neighbor AP of this AP is not less than 1, continues executing with subsequent step.
Second step: the size of the signal intensity of this AP detected according to neighbor AP, neighbor AP is ranked up, according to sequence
As a result, the neighbor coefficient of each neighbor AP is set:
As seen from the above table, AP1 detects that the signal intensity of this AP is-61dBm, and the neighbor coefficient of AP1 is 1, and AP2 detects
The signal intensity of this AP is-62dBm, and the neighbor coefficient of AP2 is 2.
3rd step: effective neighbor AP that neighbor coefficient is 2 is defined as target effective neighbor AP, it is judged that target effective neighbours
Whether the signal intensity of this AP detected by AP (AP3) is in pre-set interval: assume that pre-set interval is (-74dBm ,-83dBm),
AP3 detects that the signal intensity of this AP is the-63dBm maximum more than pre-set interval, it is therefore desirable to completes to reduce and launches power.
As can be seen here, the adjustment of the AP during the adjustment process of the AP that the embodiment of the present invention provides realizes with existing TCP
The difference of journey is:
The first step determines neighbor AP: existing TCP determines in realizing that the mode of neighbor AP is: on traversal AC all online
The neighbor list of AP.Assume that this AC has managed 1000 AP, for AP1, AP2 and AP3, be required for inquiring about remaining 999
The neighbor list of AP determines in these 999 AP whether have the AP this AP being detected.And illustrated embodiment of the present invention, determine this AP
Neighbor list present in the 2nd AP, only inquiry the 2nd AP neighbor list determine whether the 2nd AP detects oneself: right
For AP1, it is only necessary to the neighbor list of inquiry AP3, for AP2, it is only necessary to the neighbor list of inquiry AP1 and AP3, for
For AP3, it is only necessary to the neighbor list of inquiry AP1 and AP2.
As can be seen here, the scheme of application prior art, need to inquire about 999*3 neighbor list, and apply the side of the present invention
Case, it is only necessary to inquire about 5 neighbor lists, greatly reduce queries.
Neighbor AP is ranked up by second step: during existing TCP realizes, need all neighbours that will inquire in previous step
Occupy AP to be ranked up, wherein potentially include asymmetric neighbours.And illustrated embodiment of the present invention, only effective neighbor AP of screening is entered
Row sequence, does not the most include asymmetric neighbours.
As can be seen here, in sequencer procedure, the amount of calculation that existing TCP realizes is greater than the calculating of the embodiment of the present invention
Amount.
3rd step adjusts according to the target base AP determined and launches power: during existing TCP realizes, the target determined is adjacent
Occupy AP and be probably the asymmetric neighbours of this AP, may result in asymmetric neighbours and adjust problem.And illustrated embodiment of the present invention, really
Fixed target base AP must be symmetrical neighbours, does not haves asymmetric neighbours and adjusts problem.
As can be seen here, the application embodiment of the present invention, it is to avoid asymmetric neighbours adjust problem.
Below asymmetric neighbours are adjusted problem to illustrate, for convenience of explanation, here with the neighbours of target base AP
Coefficient is 1 and predetermined threshold value for the quantity of neighbor AP is 1 to illustrate.
Assume the result that AP1 detects:
| Detection AP | Detected AP | Signal intensity |
| AP1 | Null | Null |
The result of AP2 detection:
| Detection AP | Detected neighbours) | Signal intensity |
| AP2 | AP1 | -51 |
It is to say, AP2 can detect that AP1 is reported AC by AP1, AP2, therefore AP1 is present in the neighbor list of AP2
In, but AP1 cannot detect AP2, during therefore AP2 cannot occur in the neighbor list of AP1.
The adjustment process of AP1:
On the first step: AP1 traversal AC, the neighbor list of all online AP, inquires AP2 and AP1 detected, be defined as by AP1
Neighbor AP.
| Signal intensity | Detection AP | Detected AP |
| -51 | AP2 | AP1 |
Second step: the size of the signal intensity of this AP detected according to neighbor AP, neighbor AP is ranked up, according to sequence
As a result, the neighbor coefficient of each neighbor AP is set:
As seen from the above table, AP1 only inquires a neighbor AP, and the neighbor coefficient of AP2 is 1.
3rd step: effective neighbor AP that neighbor coefficient is 1 is defined as target effective neighbor AP, it is judged that target effective neighbours
Whether the signal intensity of this AP detected by AP (AP3) is in pre-set interval: assume that pre-set interval is (-74dBm ,-83dBm),
AP3 detects that the signal intensity of this AP is the-54Bm maximum more than pre-set interval, it is therefore desirable to completes to reduce and launches power.
The adjustment process of AP2:
The neighbor list of all online AP on the first step: AP2 traversal AC.Inquire and do not have AP AP2 to be detected.
| Signal intensity | Detection AP | Detected AP |
| Null | Null | AP2 |
| XX | XX | AP2 |
Second step: the size of the signal intensity of this AP detected according to neighbor AP, neighbor AP is ranked up, according to sequence
As a result, the neighbor coefficient of each neighbor AP is set:
As seen from the above table, AP2 does not has neighbor AP.
The quantity 0 of the neighbor AP of the 3rd step: AP2 is less than predetermined threshold value 1, and therefore AP2 increases transmitting power.
It is to say, AP1 can reduce its own transmission power, AP2 can increase its own transmission power.But, apply in reality
In, when AP is disposed, it is generally recognized that the transmitting power difference of each AP is little, thus disposes AP uniformly.If
Occur that said one AP reduces and launch power, and another AP increases the situation launching power, then have impact on the normal portion to AP
Administration, can cause subregion overflow, subregion not to have the situation of signal.
And apply illustrated embodiment of the present invention, it is adjusted only for symmetrical neighbor AP (i.e. effectively neighbor AP), it is possible to keep away
Exempt from above-mentioned asymmetric neighbours and adjust problem.
Corresponding with above-mentioned embodiment of the method, the embodiment of the present invention also provides for a kind of transmitting power adjustment apparatus.
A kind of structural representation launching power adjustment apparatus that Fig. 2 provides for the embodiment of the present invention, including:
First determines module 201, at least one in the presence of determining first neighbor list of a described AP the
Two AP；
Enquiry module 202, for inquiring about second neighbours of at least one the 2nd AP described preserved in wireless controller AC
In list, if there is a described AP；
Second determines module 203, for showing Query Result to exist corresponding to second neighbor list of a described AP
The 2nd AP be defined as effective neighbor AP of a described AP；
First judge module 204, for judging that whether the quantity of effective neighbor AP of a described AP is less than predetermined threshold value；
Increase module 205, for when the first judge module 204 judged result is for being, increases and launch power；
3rd determines module 206, for when the first judge module 204 judged result is no, from described effective neighbor AP
In determine target effective neighbor AP,
4th determines module 207, for determining the signal of the described AP detected by described target effective neighbor AP
Intensity；
Second judge module 208, for judging the signal of the described AP detected by described target effective neighbor AP
Whether intensity is in pre-set interval；
Adjusting module 209, for when the second judge module 208 judged result is no, adjusts and launches power.
In illustrated embodiment of the present invention, adjusting module 209, specifically may be used for:
When the signal intensity of a detected described AP is more than the maximum of described pre-set interval, reduces and launch merit
Rate；When the signal intensity of a detected described AP is less than the minima of described pre-set interval, increases and launch power.
In illustrated embodiment of the present invention, the 3rd determines module 206, may include that reception submodule and screening submodule
(not shown), wherein,
Receive submodule, for receiving the selection instruction that user sends；
Screening submodule, for selecting instruction according to described, from effective neighbor AP of a described AP, screening obtains mesh
Indicate effect neighbor AP.
In illustrated embodiment of the present invention, the 3rd determines module 206, may include that sorting sub-module and determines submodule
(not shown), wherein,
Sorting sub-module, for detecting the size of the signal intensity of a described AP, to described according to effective neighbor AP
Effectively neighbor AP is ranked up；
Determining submodule, being defined as target effective neighbor AP for will be located in presetting effective neighbor AP of ranking.
In illustrated embodiment of the present invention, described device can also include:
3rd judge module (not shown), is used for judging whether to meet launching power adjustment trigger conditions；Wherein, institute
State transmitting power adjustment trigger conditions to include: detect and neighbor AP is increased or decreased；Or, reach predetermined time；Or, when reaching
During to predetermined time, detect and neighbor AP is increased or decreased；
If it is, trigger first to determine module 201.
Applying embodiment illustrated in fig. 2 of the present invention, an AP determines in the presence of the first neighbor list of self at least one
Individual 2nd AP；In second neighbor list of at least one the 2nd AP described preserved in inquiry wireless controller AC respectively, if
There is an AP；Query Result is shown, and there is the 2nd AP corresponding to second neighbor list of an AP is defined as an AP's
Effectively neighbor AP；Then according to effective neighbor AP to self carrying out launching the adjustment of power.Visible, send out by adjusting for AP screening
Penetrate power institute according to effective neighbor AP, it is possible to reduce AP adjusts the quantity of neighbor AP of required traversal when launching power, thus
Avoid the situation that on AP traversal AC, the amount of calculation that causes of all neighbor AP is excessive；It addition, effective neighbor AP of an AP is
The symmetrical neighbours of the oneth AP, application this programme can ensure that the symmetry of neighbor AP, it is to avoid asymmetric neighbours adjust problem.
It should be noted that in this article, the relational terms of such as first and second or the like is used merely to a reality
Body or operation separate with another entity or operating space, and deposit between not necessarily requiring or imply these entities or operating
Relation or order in any this reality.And, term " includes ", " comprising " or its any other variant are intended to
Comprising of nonexcludability, so that include that the process of a series of key element, method, article or equipment not only include that those are wanted
Element, but also include other key elements being not expressly set out, or also include for this process, method, article or equipment
Intrinsic key element.In the case of there is no more restriction, statement " including ... " key element limited, it is not excluded that
Including process, method, article or the equipment of described key element there is also other identical element.
Each embodiment in this specification all uses relevant mode to describe, identical similar portion between each embodiment
Dividing and see mutually, what each embodiment stressed is the difference with other embodiments.Real especially for device
For executing example, owing to it is substantially similar to embodiment of the method, so describe is fairly simple, relevant part sees embodiment of the method
Part illustrate.
One of ordinary skill in the art will appreciate that all or part of step realizing in said method embodiment is can
Completing instructing relevant hardware by program, described program can be stored in computer read/write memory medium,
The storage medium obtained designated herein, such as: ROM/RAM, magnetic disc, CD etc..
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit protection scope of the present invention.All
Any modification, equivalent substitution and improvement etc. made within the spirit and principles in the present invention, are all contained in protection scope of the present invention
In.
Claims (10)
1. a transmission power adjustment method, it is characterised in that be applied to the first wireless access point AP, including:
Determine at least one the 2nd AP in the presence of first neighbor list of a described AP；
In second neighbor list of at least one the 2nd AP described preserved in inquiry wireless controller AC respectively, if there is institute
State an AP；
Query Result is shown, and the 2nd AP corresponding to the second neighbor list that there is a described AP is defined as a described AP
Effective neighbor AP；
Judge that the quantity of effective neighbor AP of a described AP, whether less than predetermined threshold value, launches power if it is, increase；
If it does not, determine target effective neighbor AP from described effective neighbor AP, and determine that described target effective neighbor AP is examined
The signal intensity of the described AP measured；
Judge that whether the signal intensity of a described AP detected by described target effective neighbor AP is in pre-set interval；
When judged result is no, adjusts and launch power.
Method the most according to claim 1, it is characterised in that power is launched in described adjustment, including:
When the signal intensity of a detected described AP is more than the maximum of described pre-set interval, reduces and launch power；
When the signal intensity of a detected described AP is less than the minima of described pre-set interval, increases and launch power.
Method the most according to claim 1, it is characterised in that described determine that from described effective neighbor AP target effective is adjacent
Occupy AP, including:
Receive the selection instruction that user sends；
Selecting instruction according to described, from effective neighbor AP of a described AP, screening obtains target effective neighbor AP.
Method the most according to claim 1, it is characterised in that described determine that from described effective neighbor AP target effective is adjacent
Occupy AP, including:
The size of the signal intensity of a described AP detected according to effective neighbor AP, described effective neighbor AP is ranked up；
The effective neighbor AP that will be located in presetting ranking is defined as target effective neighbor AP.
5. according to the method described in any one of claim 1-4, it is characterised in that described the first neighbour determining a described AP
Before occupying at least one the 2nd AP in the presence of list, also include:
Judge whether to meet and launch power adjustment trigger conditions；Wherein, described transmitting power adjustment trigger conditions includes:
Detect and neighbor AP is increased or decreased；Or, reach predetermined time；
Or, when reaching predetermined time, detect and neighbor AP be increased or decreased；
If it is, perform the step of at least one the 2nd AP in the presence of described the first neighbor list determining a described AP
Suddenly.
6. launch power adjustment apparatus for one kind, it is characterised in that be applied to the first wireless access point AP, including:
First determines module, at least one the 2nd AP in the presence of the first neighbor list determining a described AP；
Enquiry module, in the second neighbor list inquiring about at least one the 2nd AP described preserved in wireless controller AC,
Whether there is a described AP；
Second determines module, for Query Result shows to exist the 2nd AP corresponding to the second neighbor list of a described AP
It is defined as effective neighbor AP of a described AP；
First judge module, for judging that whether the quantity of effective neighbor AP of a described AP is less than predetermined threshold value；
Increase module, for when described first judge module judged result is for being, increases and launch power；
3rd determines module, for when described first judge module judged result is no, determines from described effective neighbor AP
Target effective neighbor AP,
4th determines module, for determining the signal intensity of the described AP detected by described target effective neighbor AP；
Whether second judge module, for judging the signal intensity of a described AP detected by described target effective neighbor AP
In pre-set interval；
Adjusting module, for when described second judge module judged result is no, adjusts and launches power.
Device the most according to claim 6, it is characterised in that described adjusting module, specifically for:
When the signal intensity of a detected described AP is more than the maximum of described pre-set interval, reduces and launch power；
When the signal intensity of a detected described AP is less than the minima of described pre-set interval, increases and launch power.
Device the most according to claim 6, it is characterised in that the described 3rd determines module, including:
Receive submodule, for receiving the selection instruction that user sends；
Screening submodule, for selecting instruction according to described, from effective neighbor AP of a described AP, screening obtains target has
Effect neighbor AP.
Device the most according to claim 6, it is characterised in that the described 3rd determines module, including:
Sorting sub-module, for the size of the signal intensity of a described AP being detected according to effective neighbor AP, to described effectively
Neighbor AP is ranked up；
Determining submodule, being defined as target effective neighbor AP for will be located in presetting effective neighbor AP of ranking.
10. according to the device described in any one of claim 6-9, it is characterised in that described device also includes:
3rd judge module, is used for judging whether to meet launching power adjustment trigger conditions；Wherein, described transmitting power adjusts and touches
Clockwork spring part includes:
Detect and neighbor AP is increased or decreased；Or, reach predetermined time；
Or, when reaching predetermined time, detect and neighbor AP be increased or decreased；
If it is, trigger described first to determine module.
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| CN201610538212.4A CN106131940B (en) | 2016-07-05 | 2016-07-05 | Method and device for adjusting transmitting power |
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