CN101867942A - Method and device for dynamically adjusting coverage range of wireless access point - Google Patents
Method and device for dynamically adjusting coverage range of wireless access point Download PDFInfo
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- CN101867942A CN101867942A CN 201010203420 CN201010203420A CN101867942A CN 101867942 A CN101867942 A CN 101867942A CN 201010203420 CN201010203420 CN 201010203420 CN 201010203420 A CN201010203420 A CN 201010203420A CN 101867942 A CN101867942 A CN 101867942A
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Abstract
The invention provides a method and a device for dynamically adjusting coverage range of a wireless access point, belonging to the field of wireless communication. The method comprises the following steps of: calculating a distance squared value of a first STA (static timing analyzer) of a plurality of STAs and a plurality of APs (access points) in fixed time to acquire a plurality of corresponding distance squared values; generating a distance compared value according to the least distance squared value of the first STA and the other APs and the first distance squared value, and using the AP corresponding to the least distance squared value as a backup AP of the first STA when the distance compared value is less than a predetermined threshold; and determining that the wireless connection of the first STA is not reasonable when a load compared value corresponding to a first wireless client is more than the predetermined threshold, and adjusting emission powers of the first AP and the backup AP of the first STA. The device comprises a first calculation module, a second calculation module, a comparison module and an adjusting module. The invention optimizes the allocation of wireless resources and improves utilization ratios of the system resources.
Description
Technical field
The embodiment of the invention relates to wireless communication technology, relates in particular to a kind of method and device of dynamic adjustment coverage range of wireless access point.
Background technology
WAP (wireless access point) (Access Point is hereinafter to be referred as AP) is the access point that the mobile computer user enters cable network, is mainly used in broadband home, inside, building and inside, garden, and typical range covers tens meters to rice up to a hundred.In the coverage of single AP, all wireless clients that are associated with AP (Station is hereinafter to be referred as STA) will be shared and the contention bandwidth.If coverage is too big, has a large amount of STA and use this AP; If coverage is dwindled, use the STA quantity of network to reduce simultaneously.
Because the coverage of AP depends on the transmitting power of AP, therefore generally all be the coverage of adjusting AP by the transmitting power of adjusting AP.
The method of adjusting the AP coverage by the transmitting power of adjusting AP in the prior art has: use different transmitting powers when sending each data;
The AP intercommunication, the running parameter and the range data of acquisition neighbor AP calculate neighbours power are adjusted in the influence of self;
Perhaps, adjust transmitting power by the negotiation between AP and client, the method for adjusting transmitting power by the negotiation between AP and client has AP initiatively to remove to seek the dual mode that client and client initiatively propose to adjust requirement.
In realizing process of the present invention, the inventor finds that there is following shortcoming at least in prior art:
The first method of prior art changes the transmitting power of AP very continually, can only do certain optimization to the connection speed of the current STA that connects, and substantial change is not done in the adjustment of AP coverage in the whole radio frequency environment.
Though there is limitation in the adjustable AP coverage of the second method of prior art, be unpredicted to the influence of other contiguous AP for the power adjustment of an AP.
The mode that AP initiatively removes to seek STA in the third method of prior art does not have to consider the influence of other AP is only applicable to the situation of separate unit AP; STA initiatively proposes to adjust the mode of requirement and just impels AP to carry out the power adjustment from the demand of small number of users, is applicable to that STA quantity is few, the situation when perhaps a certain STA is very important.
Summary of the invention
The invention provides a kind of method and device of dynamic adjustment coverage range of wireless access point, optimized wireless resource allocation, improved resource utilization ratio.
The invention provides a kind of method of dynamic adjustment coverage range of wireless access point, described method comprises:
Regularly calculate the square distance value of first wireless client and a plurality of WAP (wireless access point) in a plurality of wireless clients, obtain corresponding a plurality of square distance value; The WAP (wireless access point) that links to each other with described first wireless client is called first WAP (wireless access point); The square distance value of described first wireless client and first WAP (wireless access point) is called the first square distance value;
Generate apart from comparison value according to the square distance value minimum in the square distance value of described first wireless client and other WAP (wireless access point) and the first square distance value, when described apart from comparison value during, with the WAP (wireless access point) of the square distance difference correspondence of described minimum alternative WAP (wireless access point) as described first wireless client less than predetermined threshold value;
When the load comparison value of the described first wireless client correspondence during greater than predetermined threshold value, the wireless connections of determining described first wireless client are unreasonable, adjust first WAP (wireless access point) of described first wireless client and the transmitting power of alternative WAP (wireless access point), the load comparison value of the described first wireless client correspondence be described first wireless client the first WAP (wireless access point) load and the load of alternative WAP (wireless access point) difference or ratio.
The invention provides a kind of device of dynamic adjustment coverage range of wireless access point, described device comprises:
First computing module is used for the square distance value that a plurality of wireless client first wireless clients and a plurality of WAP (wireless access point) are calculated in timing, obtains corresponding a plurality of square distance value; The WAP (wireless access point) that links to each other with described first wireless client is called first WAP (wireless access point); The square distance value of described first wireless client and described first WAP (wireless access point) is called the first square distance value;
Second computing module is used for minimum square distance value of first wireless client that calculates according to described first computing module and the square distance value of other WAP (wireless access point) and the calculating of the first square distance value apart from comparison value;
Comparison module, be used for more described second computing module calculated distance comparison value and the predetermined threshold value, described apart from comparison value during when comparing less than predetermined threshold value, with the WAP (wireless access point) of the square distance difference correspondence of described minimum alternative WAP (wireless access point) as described first wireless client, and the load of the load of more described alternative WAP (wireless access point) and described first WAP (wireless access point), when the load comparison value of the described first wireless client correspondence during greater than predetermined threshold value, the notice adjusting module; The load comparison value of the described first wireless client correspondence be described first wireless client the first WAP (wireless access point) load and the load of alternative WAP (wireless access point) difference or ratio;
Described adjusting module after being used to receive the notice of described comparison module, is adjusted first WAP (wireless access point) of described first wireless client and the transmitting power of alternative WAP (wireless access point).
The present invention is by regularly calculating the square distance value of a STA and a plurality of AP among a plurality of STA, obtain corresponding a plurality of square distance value, calculate apart from comparison value according to these a plurality of square distance values, when this apart from comparison value during less than predetermined threshold value, with the AP of the square distance difference correspondence of minimum alternative AP as a STA, when the load of alternative AP during less than the load of an AP, the wireless connections of determining a STA are unreasonable, reduce the transmitting power of the AP of a STA then, make an AP provide service near the STA it better; The raise transmitting power of alternative AP of a STA is more STA service is provided, and has optimized wireless resource allocation by adjustment, has also improved resource utilization ratio.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do one to the accompanying drawing of required use in embodiment or the description of the Prior Art below introduces simply, apparently, accompanying drawing in describing below is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 dynamically adjusts the method flow schematic diagram of AP coverage for the present invention;
Fig. 2 dynamically adjusts the coverage forward part AP of AP and the position view of STA;
Fig. 3 is for determining the irrational STA schematic diagram of a plurality of wireless connections;
Fig. 4 " adjust AP to " schematic diagram afterwards for adjusting the irrational STA correspondence of wireless connections;
Fig. 5 dynamically adjusts the apparatus structure schematic diagram of AP coverage for the present invention.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention clearer, below in conjunction with the accompanying drawing in the embodiment of the invention, technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
Fig. 1 is the method flow schematic diagram that the present invention dynamically adjusts the AP coverage, and this method comprises:
The square distance value and the first square distance value minimum in the square distance value of a STA and other AP can be carried out addition among the present invention, subtract each other, multiply each other or division operation mutually, operation result is as the distance comparison value.
For example, establishing a STA is STA1, and STA1 links to each other with AP5, and then an AP is AP5.The square distance value that calculates STA1 and AP5 is 8, and the square distance value of STA1 and other AP is far longer than 8, in the case, can think that the wireless connections of STA1 are rational; Therefore reselect a STA, establishing a STA who reselects is STA2, and STA2 links to each other with AP2, and then this moment, AP2 was just as an AP.
The first square distance value of supposing to calculate STA2 and AP2 is 26, in the square distance value of STA2 and other AP, the square distance value 37 of STA2 and AP1 is minimum, then generate apart from comparison value according to 37 and 26, carry out additive operation with 37 and 26, just the square distance value 37 and the first square distance value 26 minimum in the square distance value of a STA and other AP are subtracted each other, obtain apart from comparison value 11, when 11 during less than predetermined threshold value, need whether the wireless connections of a STA rationally be made a decision again, with the AP1 of square distance value 37 correspondences of minimum alternative AP as a STA; Perhaps also can carry out division operation mutually with 26 with 37, be 37/26 apart from comparison value promptly, when 37/26 during less than predetermined threshold value, with the AP1 of square distance value 37 correspondences of the minimum alternative AP as a STA; Can also carry out addition or multiplication mutually with 37 and 26, the present invention describes with sum operation again, the first square distance value is 26, can establish predetermined threshold value is 70, i.e. explanation when the square distance value of minimum in the square distance value of a STA and other AP less than 44 the time, the AP of the square distance value correspondence that needs should minimum is as the alternative AP of a STA; When this minimum square distance value greater than 44 the time, can think that the wireless connections of a STA are reasonably, need not make a decision again.Among the present invention in the square distance value of a STA and other AP minimum square distance value be 37,37 and 26 additions obtain 63, can be described as and work as 37 less than 44, also can be described as when 63 during, need the alternative AP of the AP1 of square distance value 37 correspondences that should minimum as a STA less than predetermined threshold value 70.Phase multiplication and sum operation are similar, herein no longer explanation.
Need to prove, square distance value minimum in the square distance value of the one STA and other AP and the first square distance value carried out addition or mutually during multiplication, the selection of predetermined threshold value is relevant with the first square distance value, can predetermined threshold value be set according to the size of the first square distance value.
If above-mentioned apart from comparison value greater than predetermined threshold value, square distance value apart from each other minimum in the square distance value of the first square distance value and a STA and other AP is described, the wireless connections that promptly show a STA are rational.
This step is to be in two STA between AP in order to find out, and is in two STA between AP and is in probably within the coverage of two AP.
If the load comparison value is load poor of the AP load of a STA and alternative AP, if establish predetermined threshold value is 0, when the difference of the load of an AP load and alternative AP greater than 0 the time, that is to say when the load of an AP during, adjust the AP of a STA and the transmitting power of alternative AP greater than the load of alternative AP; Also can establish predetermined threshold value and be other value of 0, for example, if predetermined threshold value is 3, when the difference of the load of an AP load and alternative AP less than 3 the time, it is less to think that the load of the load of an AP of a STA and alternative AP differs, need not adjust the AP of a STA and the transmitting power of alternative AP, avoid the too frequent adjustment of system, make stability of a system variation; When the difference of the load of an AP load and alternative AP greater than 3 the time, it is bigger to think that the load of the load of an AP of a STA and alternative AP differs, and adjusts the AP of a STA and the transmitting power of alternative AP this moment again;
If the load comparison value is the ratio of an AP load with the load of alternative AP of a STA, if establish predetermined threshold value is 1, when the ratio of an AP load and the load of alternative AP greater than 1 the time, that is to say when the load of an AP during, adjust the AP of a STA and the transmitting power of alternative AP greater than the load of alternative AP; Also can establish predetermined threshold value and be other value of 1, for example, if predetermined threshold value is 2, when the ratio of an AP load and the load of alternative AP less than 2 the time, it is less to think that the load of the load of an AP of a STA and alternative AP differs, need not adjust the AP of a STA and the transmitting power of alternative AP, avoid the too frequent adjustment of system, make stability of a system variation; When the ratio of an AP load and the load of alternative AP greater than 2 the time, it is bigger to think that the load of the load of an AP of a STA and alternative AP differs, and adjusts the AP of a STA and the transmitting power of alternative AP this moment again.Predetermined threshold value can be chosen with needs as the case may be, and the present invention does not do qualification to this.
Need to prove, the present invention is when dynamically adjusting the coverage of AP, considered the STA quality of connection, because the principal element of STA quality of connection is the decay of signal, and square being directly proportional of the decay of signal and distance, therefore, the present invention determines by the square distance value of calculating STA and all AP whether the wireless connections of this STA are reasonable.
Concrete, adjust the AP of a STA and the transmitting power of alternative AP and be specially:
Reduce the transmitting power of the AP of a STA, the transmitting power of the alternative AP of the STA that raises.
Among the present invention, the load of AP can be the number of users of AP, flow or wireless bandwidth utilance etc.
Continue above-mentioned example, the one STA is STA2, the one AP is AP2, the one STA is that the alternative AP of STA2 is AP1, calculate the load comparison value of AP2 and AP1, if the load comparison value of AP2 and AP1 during greater than predetermined threshold value, thinks that the wireless connections of STA2 are unreasonable, adjust the AP of this STA2 and the transmitting power of alternative AP." adjust AP to " that the AP of a STA and alternative AP can be called this STA among the present invention.
Wherein, before the square distance value of regularly calculating a STA and a plurality of AP among a plurality of STA, also comprise:
Each AP in the calculating radio frequency environment and the position coordinates of each STA.
Among the present invention, can calculate the square distance value of STA and AP according to the position coordinates of each AP and each STA, the absolute value of signal strength signal intensity that also AP can be received STA is as the square distance value of this STA and AP.
Concrete, get in the radio frequency environment any AP as the initial point of coordinate system, the design transverse axis (X-axis) and the longitudinal axis (Y-axis) calculate the position coordinates of each AP according to the deployed position of wireless network; The position coordinates that calculates STA can calculate according to existing wireless location technology, and concrete computational methods are same as the prior art, repeat no more herein.Fig. 2 dynamically adjusts the coverage forward part AP of AP and the position view of STA, as shown in Figure 2, there are seven AP (AP1 to AP7) and many STA (STA1 in the radio frequency environment, STA2 etc.), work at present channel and the coverage of every AP have been provided among Fig. 2, and the coordinate figure of part A P and STA, the transmitting power of supposing current all AP is identical, because the coverage of AP depends on the transmitting power of AP, the transmitting power of all AP is identical, and also just to equal the coverage of current all AP identical, the coverage of each AP of circle expression that equates with radius among Fig. 2.
Because the coverage of AP depends on the transmitting power of AP, after the transmitting power of an AP who has adjusted a STA and alternative AP, also just equals to have adjusted the AP of a STA in the whole radio frequency environment and the coverage of alternative AP.Reduce the coverage of an AP among the present invention by the transmitting power that reduces an AP, this just can make first AP more preferably near the STA it service is provided; Simultaneously,, enlarge the coverage of this alternative AP, can make the less alternative AP of this load, improved usage factor of system resource for more STA provides service by the transmitting power of this alternative AP that raises for the less alternative AP of load.
After the coverage of an AP who has adjusted a STA and alternative AP, after the one STA detects the radio frequency environment variation, may be connected on the better AP of signal by the mode of roaming, generally speaking, a STA can be connected on the littler alternative AP of load.
In order to optimize wireless resource allocation further, improve usage factor of system resource, can also in other STA, determine the irrational STA of wireless connections of default number again, again an AP of the irrational STA correspondence of the wireless connections of these default numbers and the transmitting power of alternative AP are adjusted, make these STA also be connected on the better AP of signal, to obtain better signal strength signal intensity or signal quality.Therefore, this method can also comprise:
To determine the irrational STA of wireless connections of default number among other a plurality of STA with the irrational identical method of the wireless connections of determining a STA;
The irrational STA of wireless connections of default number all is called a STA, and the AP that links to each other with the irrational STA of the wireless connections of these default numbers is also referred to as an AP; Carry out the step of the transmitting power of the AP of above-mentioned adjustment the one STA and alternative AP then.
That is to say that a plurality of STA are arranged in the whole radio frequency environment, can only adjust the AP of an irrational STA of wireless connections and the transmitting power of alternative AP, also can adjust the AP of the irrational STA of a plurality of wireless connections and the transmitting power of alternative AP.That adjusts is many more, and the wireless resource allocation of whole radio frequency environment can more be optimized, and usage factor of system resource also will be higher.Fig. 3 is for determining the irrational STA schematic diagram of a plurality of wireless connections, and as shown in Figure 3, STA2 and STA3 are the irrational STA of wireless connections.The AP that is connected with STA3 is AP6, and the alternative AP of STA3 is AP1.
In the practical application, after determining the irrational STA of whole wireless connections, may not need the irrational STA of these wireless connections " adjust AP to " all adjusted, only need to adjust " adjust AP to " of default number, in this case, can adjust according to the irrational order of severity of STA wireless connections, that is to say, if 5 irrational STA of wireless connections are arranged, can select " adjust AP to " of 2 unreasonable more serious STA correspondences of wireless connections wherein to adjust.
Need illustrate, can come the irrational STA order of severity of comparison wireless connections apart from comparison value and/or load comparison value as foundation above-mentioned.More little apart from comparison value, show that the irrational degree of these STA wireless connections is serious more; The load comparison value is big more, and the load of the load of an AP much larger than alternative AP is described, shows that the irrational degree of these STA wireless connections is serious more.Therefore, this method can also comprise:
Relatively each STA apart from comparison value, and/or the load comparison value of each STA correspondence; The load comparison value of the one STA correspondence be a STA an AP load and the load of alternative AP difference or ratio;
Will be apart from comparison value less than predetermined threshold value, and/or the load comparison value is called STA to be adjusted greater than a STA of predetermined threshold value, adjusts the AP of these STA to be adjusted and the transmitting power of alternative AP.
Concrete, reduce the transmitting power of the AP of STA to be adjusted, the transmitting power of the alternative AP of the STA to be adjusted that raises.
Perhaps in some cases, there is contradiction in " adjust AP to " of a plurality of STA, for example, AP1 is the alternative AP of STA2 in STA2 " adjust AP to ", AP2 is the AP of STA2, AP1 is the AP of STA3 in STA3 " adjust AP to ", AP4 is the alternative AP of STA3, if these two " adjust AP to " are all adjusted, then at STA2, the transmitting power that needs rising AP1, but, need to reduce the transmitting power of AP1 at STA3, in this case, also the irrational order of severity of wireless connections that can come comparison STA2 and STA3 according to distance comparison value and/or load comparison value selects the unreasonable more serious STA of wireless connections to adjust, if by relatively, the irrational degree of STA2 wireless connections is more serious, then adjust STA2 " adjust AP to ", the transmitting power of the AP1 that promptly raises reduces the transmitting power of AP2.Fig. 4 " adjust AP to " schematic diagram afterwards for adjusting the irrational STA correspondence of wireless connections, as shown in Figure 4, at STA2, enlarged the coverage of AP1, dwindled the coverage of AP2, at STA3, enlarge the coverage of AP1, dwindled the coverage of AP6.
In the practical application, can adopt the power rank to be provided with and to represent the transmitting power of AP, the correspondence table of power rank and actual power is shown in chart 1, and the power level of establishing AP is 1 to 8 grade.Wherein, the 1st grade power maximum, the 8th grade of minimum.After the transmitting power of AP represented with the power rank, the transmitting power that reduces AP just can realize that the transmitting power of rising AP just can realize by the power rank of rising AP by the power rank of reduction AP.The rank that can once only reduce or raise, a plurality of ranks that also can once reduce or raise specifically reduce or the rank that raises can be adjusted according to actual conditions.The present invention does not limit this.
Table 1 power rank and power correspondence table
| The power rank | Performance number (dBm) | Performance number (mW) |
| ??1 | ??20 | ??100 |
| ??2 | ??17 | ??50 |
| ??3 | ??14 | ??25 |
| ??4 | ??11 | ??12.5 |
| ??5 | ??8 | ??6.5 |
| ??6 | ??5 | ??3.2 |
| ??7 | ??2 | ??1.6 |
| ??8 | ??-1 | ??0.8 |
Need to prove, the method that the present invention dynamically adjusts the AP coverage can adjust the time interval of adjusting according to actual conditions, when more STA is arranged in the wireless environment, can suitably improve running frequency, that is to say and shorten the time interval of adjusting, to reach the purpose of rapid adjustment AP coverage.Improved power system capacity further by the coverage that continues dynamically to adjust AP.
Regularly calculate the square distance value of a STA and a plurality of AP among a plurality of STA in the embodiment of the invention, obtain corresponding a plurality of square distance value, generate apart from comparison value according to the square distance value minimum in the square distance value of a STA and other AP and the first square distance value, when this apart from comparison value during less than predetermined threshold value, with the AP of the square distance difference correspondence of minimum alternative AP as a STA, when the load comparison value of an AP and alternative AP during greater than predetermined threshold value, the wireless connections of determining a STA are unreasonable, reduce the transmitting power of the AP of a STA, to reduce an AP coverage, make it provide service near the STA it better; The transmitting power of alternative AP of a STA raises, coverage with the alternative AP that enlarges a STA, make this alternative AP provide service for more STA, adjust coverage by the transmitting power of adjusting an AP and alternative AP, optimize wireless resource allocation, also improved resource utilization ratio; After having adjusted the coverage of the AP of a STA and alternative AP, a STA can be connected on the better AP of signal, has improved the quality of connection of the STA that is in the AP intermediate zone; Further, behind the irrational STA of wireless connections that determines default number, can adjust " adjust AP to " of the irrational STA of wireless connections of default number, make wireless resource allocation optimize more, resource utilization ratio is further enhanced; Can also select " adjust AP to " to adjust according to the order of severity of the irrational STA of wireless connections, reduce the workload of adjusting, make that the adjustment mode is more flexible.
Embodiment 2
Fig. 5 is the apparatus structure schematic diagram that the present invention dynamically adjusts the AP coverage, and as shown in Figure 5, this device comprises: first computing module, 201, the second computing modules 202, comparison module 203 and adjusting module 204;
Adjusting module 204 after being used to receive the notice of comparison module 203, is adjusted the AP of a STA and the transmitting power of alternative AP.
Wherein, this device can also comprise the 3rd computing module, is used for calculating each AP of radio frequency environment and the position coordinates of each STA.
Concrete, after adjusting module 204 is used to receive the notice of comparison module 203, reduce the transmitting power of the AP of a STA, the transmitting power of the alternative AP of the STA that raises.
Need explanation, for the device embodiment of dynamic adjustment AP coverage, because it is substantially corresponding to the method embodiment of dynamic adjustment AP coverage, so relevant part gets final product referring to the part explanation of the method embodiment that dynamically adjusts the AP coverage.
Regularly calculate the square distance value of a STA and a plurality of AP among a plurality of STA in the embodiment of the invention, obtain corresponding a plurality of square distance value, generate apart from comparison value according to the square distance value minimum in the square distance value of a STA and other AP and the first square distance value, when this apart from comparison value during less than predetermined threshold value, with the AP of the square distance difference correspondence of minimum alternative AP as a STA, when the load comparison value of an AP and alternative AP during greater than predetermined threshold value, the wireless connections of determining a STA are unreasonable, reduce the transmitting power of the AP of a STA, to reduce an AP coverage, make it provide service near the STA it better; The transmitting power of alternative AP of a STA raises, coverage with the alternative AP that enlarges a STA, make this alternative AP provide service for more STA, adjust coverage by the transmitting power of adjusting an AP and alternative AP, optimize wireless resource allocation, also improved resource utilization ratio.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be finished by the relevant hardware of program command, aforesaid program can be stored in the computer read/write memory medium, this program is carried out the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
It should be noted that at last: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (10)
1. method of dynamically adjusting coverage range of wireless access point is characterized in that described method comprises:
Regularly calculate the square distance value of first wireless client and a plurality of WAP (wireless access point) in a plurality of wireless clients, obtain corresponding a plurality of square distance value; The WAP (wireless access point) that links to each other with described first wireless client is called first WAP (wireless access point); The square distance value of described first wireless client and first WAP (wireless access point) is called the first square distance value;
Generate apart from comparison value according to square distance value minimum in the square distance value of described first wireless client and other WAP (wireless access point) and the described first square distance value, when described apart from comparison value during, with the WAP (wireless access point) of the square distance difference correspondence of described minimum alternative WAP (wireless access point) as described first wireless client less than predetermined threshold value;
When the load comparison value of the described first wireless client correspondence during greater than predetermined threshold value, the wireless connections of determining described first wireless client are unreasonable, adjust first WAP (wireless access point) of described first wireless client and the transmitting power of alternative WAP (wireless access point), the load comparison value of the described first wireless client correspondence be described first wireless client the first WAP (wireless access point) load and the load of alternative WAP (wireless access point) difference or ratio.
2. the method for dynamic adjustment coverage range of wireless access point according to claim 1 is characterized in that, regularly calculates before the square distance value of first wireless client and a plurality of WAP (wireless access point) in a plurality of wireless clients, also comprises:
Regularly calculate each WAP (wireless access point) in the radio frequency environment and the position coordinates of each wireless client.
3. the method for dynamic adjustment coverage range of wireless access point according to claim 1, it is characterized in that, generate apart from comparison value according to the square distance value minimum in the square distance value of described first wireless client and other WAP (wireless access point) and the first square distance value, comprising:
The square distance value and the first square distance value minimum in the square distance value of described first wireless client and other WAP (wireless access point) are carried out addition, subtracted each other, multiply each other or division operation mutually, and operation result is as the distance comparison value.
4. the method for dynamic adjustment coverage range of wireless access point according to claim 1 is characterized in that, described method also comprises:
To determine the irrational wireless client of wireless connections of default number in other a plurality of wireless clients with the irrational identical method of the wireless connections of determining first wireless client;
The irrational wireless client of the wireless connections of described default number all is called first wireless client, and the WAP (wireless access point) that links to each other with the irrational wireless client of the wireless connections of described default number is also referred to as first WAP (wireless access point); Carry out the step of the transmitting power of first WAP (wireless access point) of described first wireless client of described adjustment and alternative WAP (wireless access point) then.
5. according to the method for each described dynamic adjustment coverage range of wireless access point of claim 1 to 4, it is characterized in that first WAP (wireless access point) of described first wireless client of described adjustment and the transmitting power of alternative WAP (wireless access point) comprise:
Reduce the transmitting power of first WAP (wireless access point) of described first wireless client, the transmitting power of the alternative WAP (wireless access point) of described first wireless client that raises.
6. the method for dynamic adjustment coverage range of wireless access point according to claim 4 is characterized in that, first WAP (wireless access point) of described first wireless client of described adjustment and the transmitting power of alternative WAP (wireless access point) comprise:
More described each first wireless client apart from comparison value, and/or the load comparison value of each first wireless client correspondence;
With described apart from comparison value less than predetermined threshold value, and/or described load comparison value is called wireless client to be adjusted greater than first wireless client of predetermined threshold value, adjusts first WAP (wireless access point) of described wireless client to be adjusted and the transmitting power of alternative WAP (wireless access point).
7. the method for dynamic adjustment coverage range of wireless access point according to claim 6 is characterized in that, adjusts first WAP (wireless access point) of described wireless client to be adjusted and the transmitting power of alternative WAP (wireless access point), comprising:
Reduce the transmitting power of first WAP (wireless access point) of described wireless client to be adjusted, the transmitting power of the alternative WAP (wireless access point) of the described wireless client to be adjusted that raises.
8. device of dynamically adjusting coverage range of wireless access point is characterized in that described device comprises:
First computing module is used for the square distance value that a plurality of wireless client first wireless clients and a plurality of WAP (wireless access point) are calculated in timing, obtains corresponding a plurality of square distance value; The WAP (wireless access point) that links to each other with described first wireless client is called first WAP (wireless access point); The square distance value of described first wireless client and described first WAP (wireless access point) is called the first square distance value;
Second computing module is used for minimum square distance value of first wireless client that calculates according to described first computing module and the square distance value of other WAP (wireless access point) and the calculating of the first square distance value apart from comparison value;
Comparison module, be used for more described second computing module calculated distance comparison value and the predetermined threshold value, described apart from comparison value during when comparing less than predetermined threshold value, with the WAP (wireless access point) of the square distance difference correspondence of described minimum alternative WAP (wireless access point) as described first wireless client, and the load of the load of more described alternative WAP (wireless access point) and described first WAP (wireless access point), when the load comparison value of the described first wireless client correspondence during greater than predetermined threshold value, the notice adjusting module; The load comparison value of the described first wireless client correspondence be described first wireless client the first WAP (wireless access point) load and the load of alternative WAP (wireless access point) difference or ratio;
Described adjusting module after being used to receive the notice of described comparison module, is adjusted first WAP (wireless access point) of described first wireless client and the transmitting power of alternative WAP (wireless access point).
9. the device of dynamic adjustment coverage range of wireless access point according to claim 8 is characterized in that, described device also comprises the 3rd computing module, is used for calculating each WAP (wireless access point) of radio frequency environment and the position coordinates of each wireless client.
10. the device of dynamic adjustment coverage range of wireless access point according to claim 8, it is characterized in that, after described adjusting module specifically is used to receive the notice of described comparison module, reduce the transmitting power of first WAP (wireless access point) of described first wireless client, the transmitting power of the alternative WAP (wireless access point) of described first wireless client that raises.
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| CN110730477A (en) * | 2019-10-08 | 2020-01-24 | 杭州电子科技大学 | Access point self-adaptive adjusting method based on load balance |
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