CN101626615B - AP power adjustment method and AP power adjustment equipment - Google Patents
AP power adjustment method and AP power adjustment equipment Download PDFInfo
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- CN101626615B CN101626615B CN2009101628591A CN200910162859A CN101626615B CN 101626615 B CN101626615 B CN 101626615B CN 2009101628591 A CN2009101628591 A CN 2009101628591A CN 200910162859 A CN200910162859 A CN 200910162859A CN 101626615 B CN101626615 B CN 101626615B
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Abstract
The invention discloses an AP power adjustment method and AP power adjustment equipment so that an AC can collect the information of an AP in real time and periodically and automatically adjusts power according to the information of the collected AP and neighbor APs. The invention adopts the technical scheme that when the number of APs is large in a network to generate higher interference, the AC automatically turn the power of each AP down so as to reduce the interference; and when the number of APs is small in the network to possibly cause the insufficient coverage of a wireless network, the AC automatically increases the power of each AP so as to ensure the coverage of the wireless network.
Description
Technical field
The present invention relates to communication technical field, particularly the power regulating method of a kind of AP and equipment.
Background technology
Recently WLAN has obtained more and more widely and deep application, becomes more and more important enterprise-level local area network solution.
(Access Point AP) is equipment commonly used when setting up the micro radio local area network (LAN) at present to WAP.AP is equivalent to a bridge that is connected with gauze and wireless network, and it mainly acts on is that each wireless network clients is connected together, then with the wireless network access network based on ethernet.According to AP itself integrated function difference, prior art is divided into FAT AP networking structure and AC (Access Controller, wireless controller)+FIT AP networking structure.
Wherein, FAT AP networking structure is existing common networking structure, and its sketch map is as shown in Figure 1.
In this FAT AP networking model, AP is connected to cable network through switch, and all correlation functions are all accomplished on AP self, and therefore, this AP is called as FAT AP, comprises that dynamic key generates, L2 roams switching, authentication termination etc.Disposal ability for AP self requires just than higher like this, need to bear complicated business, and function upgrading is to realize through the software version of upgrading AP itself.
Can find out that based on above-mentioned example the network construction characteristic of FAT AP is following:
AP self function is more powerful, and functions such as dynamic key generates, L2 roaming switching, authentication termination can be accomplished from one's body at AP;
By webmastering software the whole network AP is unified centralized management;
802.1x authentication termination can be accomplished by AP self, also can be accomplished by switch, the WEB authentication also can be accomplished by AP self or by switch, cooperate the authentication and accounting system on backstage to carry out monthly payment and charge, or based on the charging of duration or flow;
Because the principle features of FAT AP self; It is applicable to that usually scale is less, only is WLAN (the Wireless Local Area Network of data access service demand; WLAN) network construction, or some topical application wlan networks carry out the project that focus covers.
Along with AP quantity in the prior wireless network increases gradually, also for wireless network has brought a series of problem, the interference between AP is exactly a major issue that wherein is related to the wireless communication quality.And can realize that AP carries out the power adjustment automatically according to network environment, and reduce the interference in the wireless environment, improve the throughput of whole system, then become the effective way that addresses this problem.
Traditional radio frequency power control method just statically transmitting power be set to maximum, merely pursue signal cover, but excessive possibly causing of power caused unnecessary interference to other wireless devices.Therefore, need to select the best power of an ability balance coverage and power system capacity.
Still there are not at present standard or the general next real-time technology of standard, the most maximum powers that can adopt acquiescence of AP according to the wireless environment automatic power adjustment.
In realizing process of the present invention, the applicant finds that there is following problem at least in prior art:
In the existing technical scheme, AP generally adopts the maximum power of acquiescence, in network, exists like this under the situation of a plurality of AP, will increase network conflict, thereby reduces the throughput of system.
Summary of the invention
The present invention provides power regulating method and the equipment of a kind of AP, and how real-time automatic power adjustment in wireless environment to reduce the interference in the network, improve the throughput of system.
For achieving the above object; One aspect of the present invention provides a kind of power regulating method of wireless access point AP; Be applied to comprise at least two AP and the network system that same Radio Access Controller AC is connected; Said AP measures the information of current existing neighbor AP respectively; And the reception signal strength signal intensity indication RSSI that in each neighbor AP, produced of the signal of confirming said AP, the RSSI that the signal of the said AP that the information that said AC receives the neighbor AP that said AP sends and each neighbor AP are sent is produced in said neighbor AP, said method comprises:
Said AC confirms the neighbor AP quantity that said AP is current according to the information of the neighbor AP that said AP sent that receives;
When said AC judged that the quantity of the pairing neighbor AP of said AP surpasses preset neighbor AP amount threshold, the RSSI that the signal of the said AP that each neighbor AP is sent is produced in said neighbor AP sorted;
Said AC is according to the order of said ordering, selects a standard RSSI according to preset selection strategy, judges itself and the magnitude relationship of preset RSSI threshold value, and according to said magnitude relationship, said AC adjusts the power of said AP according to preset adjustment strategy;
Wherein, said preset selection strategy is for selecting ordering tagmeme and the said preset corresponding RSSI of neighbor AP amount threshold; Said preset neighbor AP amount threshold is the minimum AP quantity that produces network interferences between AP.
Preferably, said method is specially:
The RSSI that the signal of the said AP that the information that said AC receives the neighbor AP that AP sends according to preset report cycle and each neighbor AP are sent according to said preset report cycle is produced in said neighbor AP;
Said AC is according to preset adjustment cycle, the neighbor AP quantity current according to the said AP of information calculations of the neighbor AP that said AP sent that receives;
Wherein, the size of said preset report cycle is less than the size of said preset adjustment cycle.
Preferably, said AC also comprises according to after the current neighbor AP quantity of each said AP of information calculations of the neighbor AP separately that each said AP sent that receives:
When said AC judged that the quantity of the pairing neighbor AP of said AP does not have to surpass preset neighbor AP amount threshold, said AC was set at default value with the performance number of said AP, and finished in this adjustment cycle the power adjustment to said AP.
Preferably, according to the magnitude relationship of said standard RSSI with preset RSSI threshold value, said AC adjusts the power of said AP according to preset adjustment strategy, is specially:
As said standard RSSI during greater than preset RSSI threshold value, said AC reduces the power of said AP;
As said standard RSSI during less than preset RSSI threshold value, said AC increases the power of said AP;
Wherein, said AC increases or reduces the size of the power of said AP, equals the absolute value of the difference between said standard RSSI and the preset RSSI threshold value, and said preset RSSI threshold value is the maximum RSSI value that does not produce network interferences between each AP.
On the other hand, the present invention also provides a kind of wireless controller AC, is applied to comprise at least two wireless access point AP and the network system that same Radio Access Controller AC is connected, comprising:
Module is set, is used to be provided with the neighbor AP amount threshold, receives signal strength signal intensity indication RSSI threshold value, selection strategy and adjustment strategy;
The signal of the said AP that communication module, the information that is used for receiving the neighbor AP that said AP sends and each neighbor AP are sent is at RSSI that said neighbor AP produced;
Processing module; Be connected with the said module that is provided with said communication module; Be used for confirming the neighbor AP quantity that each said AP is current according to the information of the received neighbor AP separately that each said AP sent of said communication module; And surpass said when the set said neighbor AP amount threshold of module is set in the neighbor AP quantity of an AP; The RSSI that the signal of said communication module received the said AP that each neighbor AP sends is produced in said neighbor AP sorts, and according to the said set selection strategy of module that is provided with, selecting a RSSI in the said ordering is standard RSSI; Wherein, said preset selection strategy is for selecting ordering tagmeme and the said preset corresponding RSSI of neighbor AP amount threshold; Said preset neighbor AP amount threshold is the minimum AP quantity that produces network interferences between AP;
Judge module; Be connected with the said module that is provided with said processing module; Be used for neighbor AP quantity and the said magnitude relationship that module set neighbor AP amount threshold be set current according to determined each the said AP of said processing module; And when the neighbor AP quantity of an AP surpasses said neighbor AP amount threshold, judge selected standard RSSI of said processing module and the said magnitude relationship that the set RSSI threshold value of module is set;
Adjusting module; Be connected with the said module that is provided with said judge module; Be used for said standard RSSI and the said magnitude relationship that the set RSSI threshold value of module is set judged according to said judge module, the power that the set adjustment strategy of module is adjusted said AP be set according to said.
Preferably, the said module that is provided with also is used to be provided with adjustment cycle;
Said processing module is used for according to the said set adjustment cycle of module that is provided with, according to information calculations each the said AP current neighbor AP quantity of each the said AP that receives according to the preset neighbor AP separately that report cycle sent;
Wherein, the size of said preset report cycle is less than the said size that the set adjustment cycle of module is set.
Preferably, said standard RSSI and the said magnitude relationship that the set RSSI threshold value of module is set that said adjusting module is judged according to said judge module are provided with the power that the set adjustment strategy of module is adjusted said AP according to said, are specially:
Judge said standard RSSI greater than said when the set RSSI threshold value of module is set when said judge module, said adjusting module reduces the power of said AP;
Judge said standard RSSI less than said when the set RSSI threshold value of module is set when said judge module, said adjusting module increases the power of said AP;
Wherein, said adjusting module increases or reduces the size of the power of said AP, equals the absolute value of the difference between said standard RSSI and the preset RSSI threshold value, and said preset RSSI threshold value is the maximum RSSI value that does not produce network interferences between each AP.
Compared with prior art, the present invention has the following advantages:
Through using technical scheme of the present invention, the information of each AP in the real-time collection current wireless network of AC is carried out the automated power adjustment according to property information cycle of collecting.AP quantity is more in network; Thereby when having produced higher interference,, AC reduces interference thereby turning down the power of AP automatically, and the AP negligible amounts in network; And possibly cause wireless network to cover when not enough, thereby increasing the power of AP automatically, AC guarantees the wireless network coverage.
Description of drawings
Fig. 1 is the structural representation of the network model of typical wireless network of the prior art;
Fig. 2 is the network diagram before the AP power adjustment of the prior art;
Fig. 3 is the adjusted network diagram of AP power of the prior art;
Fig. 4 is the schematic flow sheet of the power regulating method of AP proposed by the invention;
Fig. 5 adjusts preceding schematic network structure for the power regulating method according to AP proposed by the invention;
Fig. 6 carries out adjusted schematic network structure for the power regulating method according to AP proposed by the invention;
Fig. 7 is the schematic flow sheet of the power regulating method of the AP under the concrete application scenarios proposed by the invention;
Fig. 8 is the structural representation of AC proposed by the invention.
Embodiment
Of background technology, along with the increase of the quantity of AP in the network, when increasing area coverage, also produced interference between AP mutually, the AP quantity in network more for a long time, interference will influence the performance of network.
As shown in Figure 2, in the same area, arranged too much AP, and each AP all carries out signal emission with maximum power, cause having bigger interference between AP, influenced the performance in whole zone.
Further, as shown in Figure 3, technical thought of the present invention is to reduce the power of each AP through the power adjustment, and simultaneously, the coverage sum that also each AP is produced receives obvious influence, therefore, can guarantee the effective range of communication network.
And to carry out the power adjustment, key will determine when carries out the power adjustment, and how to carry out the power adjustment, then is a kind of major issue that the present invention need solve.
In the present invention; AC can arrange the real-time scan for networks of AP, collects the information of neighbor AP in the network, when the quantity of the neighbor AP of AP reaches pre-configured neighbor AP amount threshold; AC just thinks and has had more AP in the network, need carry out the power adjustment to each AP.
In wireless network, the signal strength signal intensity of other AP around each AP can experience, AP also can experience the signal strength signal intensity of this AP on every side, i.e. perception each other between each AP of neighbor AP each other.
If the AP intensity experienced of AP is stronger on every side, then can to experience the signal of AP too stronger for the terminal equipment around the AP, at this moment, just needs to reduce the power of AP, avoids interference; Otherwise, then need increase the power of AP, strengthen communication quality.
Therefore, carry out power when adjustment, AC will consider the signal strength signal intensity of the AP that neighbor AP perceives, if the signal strength signal intensity that perceives is strong excessively, explains that then the power of AP needs to reduce; Otherwise, explain that then the power of AP needs to increase.
As for the intensity of adjustment, the intensity of the AP that neighbor AP is experienced after needing to guarantee to adjust can not be less than the threshold value (showing through the RSSI threshold value among the present invention) of appointment.
If the intensity of the AP that adjustment back neighbor AP is experienced explains then that less than this threshold value AP power is less, may reduce coverage, reduce network performance.
Simultaneously; In order to guarantee coverage; AC can carry out descending according to the signal strength signal intensity that neighbor AP perceived, and finds one of them standard signal intensity, and according to this standard signal intensity AP is carried out the power adjustment; The signal strength signal intensity that has so just guaranteed to have at least the AP that several (being provided with according to actual needs) neighbor AP experience is greater than threshold value, thereby guaranteed coverage.
Based on above-mentioned technological thought; The invention provides the power regulating method of a kind of AP; Be applied to comprise at least two AP and the network system that same Radio Access Controller AC is connected; Each AP measures the information of current existing neighbor AP respectively, and each neighbor AP is confirmed the RSSI that the signal of corresponding AP is produced in this neighbor AP, the RSSI that the information of the neighbor AP separately that each AP of AC reception sends and the signal of the AP that each neighbor AP is sent are produced in this neighbor AP.
Wherein, RSSI (Received Signal Strength Indication) receives the signal strength signal intensity indication, belongs to the optional part of wireless transmission layer, is used for judging link quality, and whether increases broadcasting transmission intensity.In the present invention, this parameter is used for judging the signal annoyance level between AP.
In the application scenarios of reality, if other parameters that can reach constructed effect are arranged, can be applied to too in the technical scheme of the present invention, this belongs to protection scope of the present invention equally.
As shown in Figure 4, this method specifically may further comprise the steps:
Step S401, AC confirm the neighbor AP quantity that each AP is current according to the information of the neighbor AP separately that each AP sent that receives.
Need to prove that the concrete implementation procedure of this step is:
AC receives the RSSI that the signal of this AP that each neighbor AP of information and this AP of the neighbor AP of each AP self that each AP sends according to preset report cycle sends according to preset report cycle is produced in each neighbor AP;
AC is according to preset adjustment cycle, according to the current neighbor AP quantity of each AP of information calculations of the neighbor AP separately that each AP sent that receives;
Wherein, the size of preset report cycle is less than the size of preset adjustment cycle, thereby guaranteeing can be to repeating adjustment with a kind of situation.
Step S402, AC judge whether the quantity of the pairing neighbor AP of each AP surpasses preset neighbor AP amount threshold.
When AC judges that the quantity of a pairing neighbor AP of AP surpasses preset neighbor AP amount threshold, execution in step S403;
When AC judges that the quantity of a pairing neighbor AP of AP surpasses preset neighbor AP amount threshold, execution in step S407.
The RSSI that the signal of this AP that step S403, AC send each neighbor AP of this AP is produced in each neighbor AP sorts.
Step S404, AC select a standard RSSI according to the order of ordering according to preset selection strategy, judge itself and the magnitude relationship of preset RSSI threshold value.
Wherein, under concrete application scenarios, the selection of standard RSSI can be carried out according to following flow process:
AC is according to the order that is sorted among the step S403, and selecting ordering tagmeme and the preset corresponding RSSI of neighbor AP amount threshold is standard RSSI.
Wherein, preset neighbor AP amount threshold is the minimum AP quantity that produces network interferences between AP, and preset RSSI threshold value is not for producing the maximum RSSI value of network interferences between each AP.
According to the magnitude relationship of standard RSSI with the RSSI threshold value of presetting, AC is according to the power of preset adjustment strategy adjustment AP, and concrete adjustment Policy description is following:
As standard RSSI during greater than preset RSSI threshold value, execution in step S405;
As standard RSSI during less than preset RSSI threshold value, execution in step S406.
Step S405, AC reduce the power of AP.
Step S406, AC increase the power of AP.
In above-mentioned step S405 and step S406, AC increases or reduces the size of the power of AP, equals the absolute value of the difference between standard RSSI and the preset RSSI threshold value, and, after step S405 or step S406 completion, directly change step S407 over to.
Step S407, finish in this adjustment cycle power adjustment to this AP.
Need to prove; When AC judges that the quantity of a pairing neighbor AP of AP does not have to surpass preset neighbor AP amount threshold; AC can AP performance number be set at default value; Can directly keep existing power constant yet, and finish in this adjustment cycle the power adjustment of AP, such variation does not influence protection scope of the present invention.
It is pointed out that above-mentioned step S401 can regard the beginning of an adjustment cycle as, step S407 then can be regarded as in this adjustment cycle the end to the power adjustment process of an AP.
For the adjustment that guarantees AP power can adapt to the continuous variation of wireless network, the power adjustment process constantly circulates according to adjustment cycle, and after promptly step S407 accomplished, AC restarted setting up procedure S401 in next adjustment cycle.
Compared with prior art, the present invention has the following advantages:
Through using technical scheme of the present invention, the information of each AP in the real-time collection current wireless network of AC is carried out the automated power adjustment according to property information cycle of collecting.AP quantity is more in network; Thereby when having produced higher interference,, AC reduces interference thereby turning down the power of AP automatically, and the AP negligible amounts in network; And possibly cause wireless network to cover when not enough, thereby increasing the power of AP automatically, AC guarantees the wireless network coverage.
Below, in conjunction with concrete application scenarios technical scheme of the present invention is described.
In network configuration as shown in Figure 5, there are 5 AP to be connected on the AC, each AP provides wireless service with the maximum power of acquiescence.
The setting of technical scheme according to the present invention, each AP can the collecting ring environment information, and gives AC according to certain periodic report.
Through above-mentioned report flow, AC can obtain following information:
AP1 has 4 neighbor AP, and AP2, AP3, AP4, AP5 respectively have three neighbor AP.
Suppose that the neighbor AP amount threshold (threshold value) that in the current wireless network, is provided with is 3, so, because the neighbor AP quantity of each AP has all surpassed 3, at this moment, AC just can adjust the performance number of each AP.
As shown in Figure 6, after the process of adjustment power was accomplished, the wireless network coverage was constant basically, but because the signal strength signal intensity step-down, the interference in the wireless network reduces, thereby has improved the throughput of whole wireless network.
Below, as shown in Figure 7, the process of the power regulating method of above-mentioned AP proposed by the invention is elaborated:
The neighbor AP information that step S701, AC collect each AP in the current wireless network.
For automatic power adjustment, AC need understand the neighbor AP information of each AP.Each AP in the current wireless network can scanning channel, thereby is had which AP on every side, and the RSSI of this AP of experiencing of these neighbor AP.
Then, AP gives AC with these information reporting.
Because network environment may change, so the neighbor AP information of AP can periodically report AC.
After each AP had reported neighbor information separately, AC had just had the understanding of an integral body to the neighbor information of each AP.
AC can periodically carry out the automated power adjustment to each AP in the current wireless network.
In the application scenarios of reality; This power adjustment cycle can be provided with and adjust according to the practical application needs; But the cycle size of this power adjustment should report the report cycle of neighbor AP information greater than each AP in the abovementioned steps, thereby; Guarantee that AC can not carry out the power adjustment of repetition to same network scenarios, causes the wasting of resources.
The specific algorithm of power adjustment is following:
Step S702, AC calculate the neighbor AP quantity of each AP in the current network.
Step S703, AC judge whether the neighbor AP quantity of each AP surpasses preset neighbor AP amount threshold N.
If the neighbor AP quantity of AP does not have to surpass preset neighbor AP amount threshold N, then execution in step S704;
If the neighbor AP quantity of AP surpasses preset neighbor AP amount threshold N, then execution in step S705.
Step S704, AC revert to default value with the power of AP.
So far, the power adjustment to AP in this adjustment cycle is accomplished, and changes step S709 over to.
Step S705, AC carry out the RSSI corresponding with this AP that each neighbor AP of this AP reports and carry out descending sort.
Each neighbor AP of AP all can record from the RSSI of the message of AP transmission, and reports AC.
AC carries out descending according to the size of RSSI numerical value to all pairing RSSI of this AP that neighbor AP reported; Then; Therefrom find the big RSSI value of N, the neighbor AP that reports this RSSI is labeled as NAp-nth, the RSSI of its AP that experiences is recorded as RSSI-nth; Confirm as standard RSSI, as the foundation in the follow-up adjustment process.
Step S706, AC judge the standard RSSI that NAP-nth reported (RSSI-nth) of AP and the magnitude relationship of the RSSI threshold value of presetting.
Wherein the RSSI threshold value can be provided with according to the needs of practical application scene and adjust, and is labeled as RSSI-threshold.
If RSSI-nth, thinks then that the power of current AP is higher greater than RSSI-threshold, execution in step S707;
If RSSI-nth, thinks then that the power of current AP is lower less than RSSI-threshold, execution in step S708.
Step S707, AC reduce AP power.
The power of supposing the AP that adjustment is preceding is P-before, and the power of adjusted AP is P-after.
It is following that then AC reduces the algorithm of AP power:
P-after＝P-before-(RSSI-nth-RSSI-threshold)。
Adjustment changes step S709 over to after accomplishing.
Step S708, AC increase AP power.
The power of supposing the AP that adjustment is preceding is P-before, and the power of adjusted AP is P-after.
Then the algorithm of AC increase AP power is following:
P-after＝P-before+(RSSI-threshold-RSSI-nth)。
Adjustment changes step S709 over to after accomplishing.
Step S709, AC finish the adjustment of AP.
It is pointed out that above-mentioned step S701 can regard the beginning of an adjustment cycle as, step S709 then can be regarded as in this adjustment cycle the end to the power adjustment process of an AP.
For the adjustment that guarantees AP power can adapt to the continuous variation of wireless network, the power adjustment process constantly circulates according to adjustment cycle, and after promptly step S709 accomplished, AC restarted setting up procedure S701 in next adjustment cycle.
Adjustment like this, power can be adjusted to smaller value when having guaranteed that AP power is excessive, and AP power hour can be adjusted to higher value.Thereby both guaranteed wireless coverage, can avoid interference excessive again.
In order to realize above-mentioned technical scheme, the present invention also provides a kind of AC, is applied to comprise that structural representation is as shown in Figure 8, comprising at least two AP and the network system that same AC is connected:
Module 81 is set, is used to be provided with neighbor AP amount threshold, RSSI threshold value, selection strategy and adjustment strategy;
Communication module 82, the signal that is used for receiving this AP that each neighbor AP of information and this AP of the neighbor AP separately that AP sends sends is at RSSI that each neighbor AP produced;
Processing module 83; With communication module 82 with module 81 be set be connected; Be used for confirming the neighbor AP quantity that each AP is current according to the information of the received neighbor AP separately that each AP sent of communication module 82; And surpass when the set neighbor AP amount threshold of module 81 is set in the neighbor AP quantity of an AP; The RSSI that the signal of this AP that each neighbor AP of the AP that communication module 82 is received is sent is produced in neighbor AP sorts, and according to the set selection strategy of module 81 is set, selecting a RSSI in the ordering is standard RSSI;
Judge module 84; With processing module 83 with module 81 be set be connected; Be used for magnitude relationship according to the current neighbor AP quantity of processing module 83 determined each AP neighbor AP amount threshold set with module 81 is set; And when the neighbor AP quantity of an AP surpasses the neighbor AP amount threshold, judging treatmenting module 83 selected standard RSSI and the magnitude relationship that the set RSSI threshold value of module is set;
Adjusting module 85, with judge module 84 with module 81 be set be connected, the magnitude relationship of the RSSI threshold value that the standard RSSI that is used for being judged according to judge module 84 is set with module 81 is set is according to the power that the set adjustment strategies adjustment AP of module 81 is set.
In concrete application scenarios, module 81 is set also is used to be provided with adjustment cycle;
Accordingly, processing module 83 is used for according to the set adjustment cycle of module 81 is set, according to information calculations each AP current neighbor AP quantity of each AP that receives according to the preset neighbor AP separately that report cycle sent;
Wherein, the size of preset report cycle is less than the size that the set adjustment cycle of module 81 is set.
In concrete application scenarios, the magnitude relationship of the RSSI threshold value that the standard RSSI that adjusting module 85 is judged according to judge module 84 is set with module 81 is set, the power according to the set adjustment strategies adjustment AP of module 81 is set is specially:
When judge module 84 criterion RSSI when the set RSSI threshold value of module 81 is set, adjusting module 85 reduces the power of AP;
When judge module 84 criterion RSSI when the set RSSI threshold value of module 81 is set, adjusting module 85 increases the power of AP;
Wherein, adjusting module increases or reduces the size of the power of AP, equals the absolute value of the difference between standard RSSI and the preset RSSI threshold value, and it is the maximum RSSI value that does not produce network interferences between each AP that module 83 set RSSI threshold values are set.
In concrete application scenarios, processing module 83 is specially according to the set selected standard RSSI of selection strategy of module 81 is set:
Processing module 83 is according to the order of ordering, and selecting the ordering tagmeme is standard RSSI with the module 81 set corresponding RSSI of neighbor AP amount threshold are set.
Wherein, module 83 set neighbor AP amount threshold being set is the minimum AP quantity that produces network interferences between AP.
Compared with prior art, the present invention has the following advantages:
Through using technical scheme of the present invention, the information of each AP in the real-time collection current wireless network of AC is carried out the automated power adjustment according to property information cycle of collecting.AP quantity is more in network; Thereby when having produced higher interference,, AC reduces interference thereby turning down the power of AP automatically, and the AP negligible amounts in network; And possibly cause wireless network to cover when not enough, thereby increasing the power of AP automatically, AC guarantees the wireless network coverage.
Through the description of above execution mode, those skilled in the art can be well understood to the present invention and can realize through hardware, also can realize by the mode that software adds necessary general hardware platform.Based on such understanding; Technical scheme of the present invention can be come out with the embodied of software product, this software product can be stored in a non-volatile memory medium (can be CD-ROM, USB flash disk; Portable hard drive etc.) in; Comprise some instructions with so that computer equipment (can be personal computer, server, the perhaps network equipment etc.) each implements the described method of scene to carry out the present invention.
It will be appreciated by those skilled in the art that accompanying drawing is a preferred sketch map of implementing scene, module in the accompanying drawing or flow process might not be that embodiment of the present invention is necessary.
It will be appreciated by those skilled in the art that the module in the device of implementing in the scene can be distributed in the device of implementing scene according to implementing scene description, also can carry out respective change and be arranged in the one or more devices that are different from this enforcement scene.The module of above-mentioned enforcement scene can be merged into a module, also can further split into a plurality of submodules.
The invention described above sequence number is not represented the quality of implementing scene just to description.
More than disclosedly be merely several practical implementation scene of the present invention, still, the present invention is not limited thereto, any those skilled in the art can think variation all should fall into protection scope of the present invention.
Claims (7)
1. the power regulating method of a wireless access point AP; It is characterized in that; Be applied to comprise at least two AP and the network system that same Radio Access Controller AC is connected; Said AP measures the information of current existing neighbor AP respectively; And the reception signal strength signal intensity indication RSSI that in each neighbor AP, produced of the signal of confirming said AP, the RSSI that the signal of the said AP that the information that said AC receives the neighbor AP that said AP sends and each neighbor AP are sent is produced in said neighbor AP, said method comprises:
Said AC confirms the neighbor AP quantity that said AP is current according to the information of the neighbor AP that said AP sent that receives;
When said AC judged that the quantity of the pairing neighbor AP of said AP surpasses preset neighbor AP amount threshold, the RSSI that the signal of the said AP that each neighbor AP is sent is produced in said neighbor AP sorted;
Said AC is according to the order of said ordering, selects a standard RSSI according to preset selection strategy, judges itself and the magnitude relationship of preset RSSI threshold value, and according to said magnitude relationship, said AC adjusts the power of said AP according to preset adjustment strategy;
Wherein, said preset selection strategy is for selecting ordering tagmeme and the said preset corresponding RSSI of neighbor AP amount threshold; Said preset neighbor AP amount threshold is the minimum AP quantity that produces network interferences between AP.
2. the method for claim 1 is characterized in that, is specially:
The RSSI that the signal of the said AP that the information that said AC receives the neighbor AP that AP sends according to preset report cycle and each neighbor AP are sent according to said preset report cycle is produced in said neighbor AP;
Said AC is according to preset adjustment cycle, the neighbor AP quantity current according to the said AP of information calculations of the neighbor AP that said AP sent that receives;
Wherein, the size of said preset report cycle is less than the size of said preset adjustment cycle.
3. method as claimed in claim 2 is characterized in that, said AC also comprises according to after the current neighbor AP quantity of each said AP of information calculations of the neighbor AP that each said AP sent that receives:
When said AC judged that the quantity of the pairing neighbor AP of said AP does not have to surpass preset neighbor AP amount threshold, said AC was set at default value with the performance number of said AP, and finished in this adjustment cycle the power adjustment to said AP.
4. the method for claim 1 is characterized in that, according to the magnitude relationship of said standard RSSI with preset RSSI threshold value, said AC adjusts the power of said AP according to preset adjustment strategy, is specially:
As said standard RSSI during greater than preset RSSI threshold value, said AC reduces the power of said AP;
As said standard RSSI during less than preset RSSI threshold value, said AC increases the power of said AP;
Wherein, said AC increases or reduces the size of the power of said AP, equals the absolute value of the difference between said standard RSSI and the preset RSSI threshold value, and said preset RSSI threshold value is the maximum RSSI value that does not produce network interferences between each AP.
5. a wireless controller AC is characterized in that, is applied to comprise at least two wireless access point AP and the network system that same Radio Access Controller AC is connected, comprising:
Module is set, is used to be provided with the neighbor AP amount threshold, receives signal strength signal intensity indication RSSI threshold value, selection strategy and adjustment strategy;
The signal of the said AP that communication module, the information that is used for receiving the neighbor AP that said AP sends and each neighbor AP are sent is at RSSI that said neighbor AP produced;
Processing module; Be connected with the said module that is provided with said communication module; Be used for confirming the neighbor AP quantity that each said AP is current according to the information of the received neighbor AP separately that each said AP sent of said communication module; And surpass said when the set said neighbor AP amount threshold of module is set in the neighbor AP quantity of an AP; The RSSI that the signal of said communication module received the said AP that each neighbor AP sends is produced in said neighbor AP sorts, and according to the said set selection strategy of module that is provided with, selecting a RSSI in the said ordering is standard RSSI; Wherein, said preset selection strategy is for selecting ordering tagmeme and the said preset corresponding RSSI of neighbor AP amount threshold; Said preset neighbor AP amount threshold is the minimum AP quantity that produces network interferences between AP;
Judge module; Be connected with the said module that is provided with said processing module; Be used for neighbor AP quantity and the said magnitude relationship that module set neighbor AP amount threshold be set current according to determined each the said AP of said processing module; And when the neighbor AP quantity of an AP surpasses said neighbor AP amount threshold, judge selected standard RSSI of said processing module and the said magnitude relationship that the set RSSI threshold value of module is set;
Adjusting module; Be connected with the said module that is provided with said judge module; Be used for said standard RSSI and the said magnitude relationship that the set RSSI threshold value of module is set judged according to said judge module, the power that the set adjustment strategy of module is adjusted said AP be set according to said.
6. AC as claimed in claim 5 is characterized in that,
The said module that is provided with also is used to be provided with adjustment cycle;
Said processing module is used for according to the said set adjustment cycle of module that is provided with, according to information calculations each the said AP current neighbor AP quantity of each the said AP that receives according to the preset neighbor AP separately that report cycle sent;
Wherein, the size of said preset report cycle is less than the said size that the set adjustment cycle of module is set.
7. AC as claimed in claim 5; It is characterized in that; Said standard RSSI and the said magnitude relationship that the set RSSI threshold value of module is set that said adjusting module is judged according to said judge module are provided with the power that the set adjustment strategy of module is adjusted said AP according to said, are specially:
Judge said standard RSSI greater than said when the set RSSI threshold value of module is set when said judge module, said adjusting module reduces the power of said AP;
Judge said standard RSSI less than said when the set RSSI threshold value of module is set when said judge module, said adjusting module increases the power of said AP;
Wherein, said adjusting module increases or reduces the size of the power of said AP, equals the absolute value of the difference between said standard RSSI and the preset RSSI threshold value, and said preset RSSI threshold value is the maximum RSSI value that does not produce network interferences between each AP.
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