CN103442445A - Channel allocation method and system - Google Patents
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Abstract
The invention provides a channel allocation method and system. The method comprises the steps that channel sets corresponding to access controllers are chosen; the channel sets are allocated to wireless access points controlled by the access controllers; channels in the channel sets are scanned through the wireless access points to obtain a scanning result; target channels are determined according to the scanning result; the target channels are allocated to the wireless access points. According to the channel allocation method and system, mutual interference between the access points can be reduced to the maximum degree, working efficiency of the access points is improved, and performance of the whole network is also improved.
Description
Technical field
The present invention relates to the radio network technique field, particularly relate to a kind of method for channel allocation and system.
Background technology
In current mobile communication system, channel allocation algorithm mainly is divided into three major types: fixed channel assignment, dynamic channel allocation and accidental channel distribute.Yet different from mobile communications network is, the efficient channel number of WLAN (WLAN (wireless local area network)) is limited, channel is very rare resource, for example 802.11b/g/n only has three efficient channels to use in the 2.4GHz frequency range, and each wireless access point AP (Access Point) and user STA (station) guarantee not overlap with other channels that using as much as possible.Current mobile communications network can distribute different channels to the user according to the size of user load dynamically, and the Channel distribution mode of wlan network and mobile network's Channel distribution mode is distinct, main purpose is to meet consumers' demand, avoid as far as possible the interference between the user, promote user's speed and throughput.In the 802.11n network, defined the wlan standard of 2.4GHz frequency range and 5.8GHz frequency range simultaneously, 802.11n defined two kinds of frequency bandwidth: 20MHz and 40MHz frequency range (HT20 and HT40), according to the actual demand to bandwidth, the AP possible configuration be to force the channel tie-in mode, adopt the 40MHz frequency range, the also self adaptation tie-in mode of possible configuration, not only can adopt the 40MHz frequency range but also can adopt the 20MHz frequency range but preferred 20MHz frequency range, and except this pattern that is configured to adopt the 20MHz frequency range two.The 40MHz frequency range is bundled the channel of two 20MHz frequency ranges, to obtain the throughput higher than the 20MHz frequency range of 2 times.One tied of two 20MHz channel are main channel, and one is auxiliary channel.Main channel sends beacon message and partial data message; Auxiliary channel sends other messages.
802.11n the Channel Assignment Problems of network, be actually by effective channel plan and optimize and revise, and makes the common-channel interference between AP drop to minimum.According to the system configuration of current wlan network, its network's coverage area is divided into to several communities, each AP covers the Yi Ge community, and, according to multiplex mode, the AP of each community is used a channel.When laying large-scale wlan network, just there will be the AP number to be greater than the situation of available efficient channel number.And how effectively available limited efficient channel to be distributed to several communities AP, and make systematic function effectively be improved, be the core concept of wlan network channel allocation.
Key step for AP allocated channel in wlan network in current techniques comprises: scan channel, channel judging, channel allocation, scanning result by AP to all efficient channels, judge whether its channel condition meets communicating requirement, and show that preferred channels is distributed, make this AP carry out work on the channel distributed.But because the channel allocation of each AP is separate, can not avoid the channel disturbance between AP, thereby, caused the channel disturbance between AP large, also reduced the operating efficiency of AP, be unfavorable for the raising of the whole network performance.
Summary of the invention
The object of the present invention is to provide a kind of method for channel allocation and system, can effectively reduce the channel disturbance between AP, improve the operating efficiency of AP.
Purpose of the present invention is achieved through the following technical solutions:
A kind of method for channel allocation, comprise the steps:
Select the channel set corresponding with access controller;
Described channel set is distributed to the WAP (wireless access point) of described access controller institute management and control;
By described WAP (wireless access point), the channel in described channel set is scanned and obtains scanning result;
Determine destination channel according to described scanning result;
Described destination channel is distributed to described WAP (wireless access point).
A kind of channel assigning system comprises:
Channel set is selected module, for selecting the channel set corresponding with access controller;
The channel set distribution module, for distributing to described channel set the WAP (wireless access point) of described access controller institute management and control;
The scanning result acquisition module, for scanning and obtain scanning result the channel of described channel set by described WAP (wireless access point);
The destination channel determination module, for determining destination channel according to described scanning result;
The destination channel distribution module, for distributing to described WAP (wireless access point) by described destination channel.
Scheme according to the invention described above, it is after selecting the channel set corresponding with access controller, this channel set is distributed to the WAP (wireless access point) of this access controller institute management and control, by described WAP (wireless access point), the channel in described channel set is scanned and obtains scanning result, determine destination channel according to this scanning result, again described destination channel is distributed to described WAP (wireless access point), owing to AP, distributing current selected channel set, and owing to being that the scanning result scan channel in this channel set obtained by AP is determined destination channel, i.e. select target channel in channel set, each AP to the AC management and control has adopted unified channel set (current selected channel set), and can be according to the reasonable disposition to channel set, make channel selected between AP in quadrature condition, can be maximized the phase mutual interference of channel between minimizing AP, improve the operating efficiency of AP, also improved the whole network performance.
The accompanying drawing explanation
The schematic flow sheet that Fig. 1 is method for channel allocation embodiment of the present invention;
The schematic flow sheet that Fig. 2 is a specific embodiment of method for channel allocation of the present invention;
The channel set that Fig. 3 is the 2.4GHz frequency range is selected the schematic flow sheet of example;
The channel set that Fig. 4 is the 5.8GHz frequency range is selected the schematic flow sheet of example;
The schematic flow sheet that Fig. 5 is an embodiment of channel assigning system of the present invention;
The structural representation that Fig. 6 is another embodiment of channel assigning system of the present invention;
The structural representation that Fig. 7 is the 3rd embodiment of channel assigning system of the present invention;
Fig. 8 is the refined structure schematic diagram that the channel set in Fig. 5～Fig. 7 is selected module.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is further elaborated, but implementation of the present invention is not limited to this.
Method for channel allocation of the present invention can be for IEEE802.11n WLAN, equally, also can be for IEEE802.11a WLAN, IEEE802.11bWLAN or IEEE802.11g WLAN, have application prospect preferably, being applicable to the network architecture is the group-network construction of AC (access controller)+AP.
Shown in Figure 1, be the schematic flow sheet of method for channel allocation embodiment of the present invention.As shown in Figure 1, the method for channel allocation in this embodiment comprises the steps:
Step S101: select the channel set corresponding with access controller;
The selection of channel set is selected according to the actual requirements, when carrying out the selection of channel set, can selectively consider following factor:
1) initial channel divides the channel set of timing to select, primary channel collection according to each frequency range, select the channel set without the binding channel, for example, for the 2.4GHz frequency range, the channel set that selection consists of 1,6,11 channels, select by 149,153,157,161,165 channel sets that form for 5.8GHz (take CONTINENTAL AREA OF CHINA as example);
2) taking into account system resource, load and user's request situation; For example: interference level is moderate, for the 2.4GHz frequency range, use the channel set (channel set for example, formed by 1,6,11 channels, the channel set formed by 2,7,12 channels or the channel set formed by 3,8,13 channels) that in channel set, channel spacing is 5; Total interference is larger, when the spuious index of AP is poor, can adopt the larger channel set of channel spacing (channel set for example, consisted of 1,7,13 channels); Total interference is less, and the channeling difficulty, when the network capacity demand is very high, can adopt channel set that in channel set, channel spacing is less (for example, the channel set consisted of 1,5,9,13 channels), when using binding channel hoist capacity, the 40MHz frequency range is preferably in the 5.8GHz frequency range and uses;
3) consider the interference source factor, the interference as far as possible judged interference source brought reduces, if for example interference source AP is controlled, adjust interference source AP channel to optimal channel in channel set, make it to other AP, cause and disturb minimizing, if interference source is uncontrollable, adjust AC administration AP channel set used self;
4) capacity as far as possible, adopt the configuration of IA High Speed Channel collection;
One or more above-mentioned factor can be considered when the selective channel collection, also other factors can be considered;
Step S102: the WAP (wireless access point) of described channel set being distributed to the management and control of access controller institute;
General a plurality of AP of AC management and control, the distributing uniform of channel set can to(for) the AP in a panel region of AC management and control, by the reasonable disposition to this channel set, can be so that the working channel between AP, between the STA work station be mutually orthogonal channel in this panel region, it is minimum that the phase mutual interference reaches;
Step S103: the channel in described channel set is scanned and obtains scanning result by described WAP (wireless access point);
WAP (wireless access point) is carried out the channel conditions of each channel of scanning survey to the channel in described channel set, the parameter of reaction channel conditions mainly comprises reception signal designation intensity RSSI, the channel estimating cycle CCA that hurries, adjacent AP quantity, packet error rate PER etc., therefore, generally comprise in scanning result and receive signal designation intensity RSSI, the channel estimating cycle CCA that hurries, adjacent AP quantity, the information such as packet error rate PER, can also comprise in scanning result whether each channel has radar signal etc., scanning channel can periodically carry out, can be also to carry out again scan channel when determining channel allocation, but adopt periodic scan channel can effectively promote the ageing of channel allocation,
Step S104: according to described scanning result, determine destination channel;
Determine that destination channel can adopt the existing mode that can realize arbitrarily, for example, can determine by scanning result the communication quality of each channel (channel in described channel set), select the channel of communication quality the best as destination channel, wherein a kind of preferably mode is the reference interference value by each channel in the calculative determination channel set, and generate the transition probability of each channel in channel set with reference to interference value according to this, collision situation when avoiding different AP to determine that destination channel is switched, then determine destination channel according to the size of transition probability:
Step S105: described destination channel is distributed to described WAP (wireless access point);
Being described WAP (wireless access point) assignment channel is destination channel.
Accordingly, according to the scheme in above-described embodiment, it is after selecting the channel set corresponding with access controller, this channel set is distributed to the WAP (wireless access point) of this access controller institute management and control, by described WAP (wireless access point), the channel in described channel set is scanned and obtains scanning result, determine destination channel according to this scanning result, again described destination channel is distributed to described WAP (wireless access point), owing to AP, distributing current selected channel set, and owing to being that the scanning result scan channel in this channel set obtained by AP is determined destination channel, i.e. select target channel in channel set, each AP to the AC management and control has adopted unified channel set (current selected channel set), and can be according to the reasonable disposition to channel set, make channel selected between AP in quadrature condition, can be maximized the phase mutual interference of channel between minimizing AP, improve the operating efficiency of AP, also improved the whole network performance.
Owing to considering in the 802.11n network, in order to improve user's network rate, also need AP to meet the condition of work of 40MHz as far as possible, and use as much as possible HT40 pattern at a high speed to communicate, for this reason, therein in embodiment, above-mentioned determines that according to described scanning result destination channel can comprise step: if the channelling mode of described WAP (wireless access point) configuration is for forcing the channel tie-in mode, and the binding channel is arranged in the channel set of current distribution, according to described scanning result, the binding channel of the communication quality the best in the channel set of current distribution is defined as to destination channel, if the channelling mode of described WAP (wireless access point) configuration is for forcing the channel tie-in mode, and nothing binding channel in the channel set of current distribution, reselect channel set.
In the present embodiment, users higher to bandwidth requirement for some, can need configuration HT40 pattern, force the channel tie-in mode, if at this moment the binding channel is arranged in channel set, the binding channel of communication quality the best is defined as to destination channel, for the situation of only having a binding channel in channel set, this binding channel is defined as to destination channel, if nothing binding channel in channel set, it is the bandwidth requirement that current channel set can not meet the user, need to reselect channel set, comprise the channel set that bundlees channel with acquisition, after reselecting channel set, again the channel set reselected is distributed to each AP of AC management and control.
In order to improve user's network rate, and use as much as possible HT40 pattern at a high speed to communicate, for this reason, therein in embodiment, determine destination channel step and above-mentioned described destination channel is distributed between described WAP (wireless access point) step and can be comprised step according to described scanning result above-mentioned: if the channelling mode of described WAP (wireless access point) configuration is the adaptive channel tie-in mode, and have and meet the binding condition bundled with described destination channel and meet the channel that communication quality requires, the channel and the destination channel that this are met to the binding condition and meet the communication quality requirement are bundled, and upgrade described destination channel with the binding channel obtained after binding.
According to the present embodiment, for the WAP (wireless access point) configuration is the situation of adaptive channel tie-in mode, in order to make it use as much as possible HT40 pattern at a high speed to communicate, distinguish whether to have and meet the binding condition bundled with described destination channel and meet the channel that communication quality requires, the binding condition refers generally to two channels adjacent in channel set and just can be bundled, for example, for comprising 1, 6, the channel set of 11 channels, only have 1 channel and 6 channels, perhaps 6 channels and 11 channels just can be bundled, and can not carry out the binding of 1 channel and 11 interchannels, if destination channel now is 1 channel, need to judge whether 6 channels meet the communication quality requirement, if meet, 1 channel and 6 channels are being bundled, and upgrade described destination channel with the binding channel obtained after binding, be about to the binding channel that destination channel is updated to 1 channel and 6 channels.
In addition, sometimes also there will be in channel set the situation without available frequency, be that each channel in channel set is all unavailable, in this case, also need to re-start channel and select, therefore, therein in embodiment, can also comprise step above-mentioned before determining the destination channel step according to described scanning result: the channel of radar signal do not detected in searching described channel set according to described scanning result, according to the channel found, determine alternative channel set; If the number of channel in described alternative channel set is zero, reselect channel set, correspondingly, if the number of channel in described alternative channel set is non-vanishing, can be in selecting alternative channel set the channel of communication quality the best as destination channel, by the scheme of this enforcement, can avoid each channel in current channel set all to be disturbed by radar signal and cause can not determine the situation of target without available frequency.
For the ease of understanding the present invention, in conjunction with the scheme of above-mentioned several embodiment, below with a specific embodiment, set forth the solution of the present invention, this specific embodiment is a preferably execution mode, but is not construed as limiting the invention.
Specific embodiment
Shown in Figure 2, be the schematic flow sheet of the specific embodiment of method for channel allocation of the present invention.As shown in Figure 2, the method for channel allocation in this specific embodiment comprises the steps:
Step S201: the selective channel collection, the channel set of selecting is distributed to the AP of AC institute management and control, enter step S202;
After AP gets the channel set of distribution, can carry out scan channel, the channel conditions of each channel that scanning channel is concentrated, and scanning result is fed back to AC, scanning result generally comprises information such as receiving signal designation intensity RSSI, the busy cycle CCA of channel estimating, adjacent AP quantity, packet error rate PER;
Step S202: judge whether each channel in channel set detects radar signal, if, enter step S203, if not, enter step S204;
Can judge whether each channel in channel set detects radar signal according to the scanning result of AP feedback;
Step S203: search in channel set the channel that radar signal do not detected, put in alternative channel set, enter step 207;
Step S204: whether the channelling mode that judges current AP is to force the channel tie-in mode, if the forced bonding pattern enters step S205, if not force the channel tie-in mode, enters step S206;
Step S205: the binding channel of communication quality the best is defined as to destination channel, if nothing binding channel in described channel set reselects channel set;
After reselecting channel set, all the channel set reselected is distributed to each AP of AC institute management and control at every turn;
Step S206: the selective channel condition is good and without the alternative channel set of the channel creation of radar signal;
Can detect one by one according to the scanning result of AP feedback the channel conditions of each channel in channel set, the condition of therefrom selecting is good and without the alternative channel set of the channel creation of radar signal, enters step 207;
Step S207: judge whether the number of channel in alternative channel set is more than or equal to 1, if enter step 209; If not, enter step 208;
Step S208: think in current channel set and to reselect channel set without available channel;
Step S209: the reference interference value Intf that determines each channel in alternative channel set according to the scan channel result
ref,, enter step 210;
With reference to interference value Intf
ref, definite mode including, but not limited to the interference of basis, RSSI, neighborCount, the information such as PER, AP flow, choose one or more and be weighted combination and ask for;
Step S210: determine each channel switching probability in alternative channel set, enter step 211;
Determine the switching probability mode including, but not limited to: ask for each alternative channel disturbance value inverse as the conversion proportion coefficient,
switch wherein
coeff.mthe conversion proportion coefficient that means m alternative channel, Intf
ref.mthe reference interference value that means m alternative channel, by each conversion proportion value addition in alternative channel, disturb larger channel, and its switching probability is lower;
Step S211: rule out destination channel according to switching probability, enter step S212;
Step S212: what judge whether current AP configure is the adaptive channel tie-in mode, if, enter step S213, if not, enter step S214;
Step S213: if having, meet the binding condition bundled with described destination channel and meet the channel that communication quality requires, the channel and the destination channel that this are met to the binding condition and meet the communication quality requirement are bundled, and upgrade described destination channel with the binding channel obtained after binding, do not meet the binding condition bundled with described destination channel and meet the channel that communication quality requires if having, do not bundled, entered step S214;
Step S214: destination channel is distributed to corresponding AP.
As previously mentioned, when carrying out the channel set selection, can consider different factors, in the following embodiments, the example that is chosen as of with comprehensive above-mentioned four factors mentioning, carrying out channel set describes, but following explanation does not limit the selection of channel set can only be in the following manner, can be also other any reasonable manners, as only partly considered above-mentioned four factors mentioning, the factor of perhaps considering comprises the factor except above-mentioned four factors mentioning, perhaps suitably adjust the order of each step in following channel set selection flow process etc., but after having reselected channel set at every turn, need to redistribute the channel set of selecting to each AP, when the selection mode of channel set is set, consider more multifactor as far as possible, and avoid carrying out more frequently the channel set selection.
The number of channel of considering 2.4GHz frequency range and 5.8GHz frequency range is different, thereby, in the comparatively reasonably channel set of configuration, the number of channel is also different, for example, for the 2.4GHz frequency range, owing to only having 1～13 channel, in order to prevent interchannel phase mutual interference (guaranteeing that each channel in channel set is mutually orthogonal) as far as possible, generally should select the channel set that channel spacing is 5, generally only have like this 3 efficient channels in channel set, and these 3 channels can only form at most a binding channel, and for the 5.8GHz frequency range, the channel set generally configured can comprise 5 efficient channels, and these 5 channels can form two binding channels.For this reason, in following explanation, with regard to two kinds of situations, describe respectively.
Shown in Figure 3, be the schematic flow sheet of 2.4GHz frequency range channel set selection example.As shown in Figure 3, in the present embodiment, aforesaid selective channel collection can comprise the steps:
Step S301: whether the channelling mode that judgement triggers the AP of channel set selection is pressure channel tie-in mode, if, enter step S302, if not, enter step S303;
Step S302: select comprise the binding channel and disturb minimum channel set;
When this step completes, channel set selects flow process to finish, and the channel set of selection can be redistributed to each AP to the AC management and control;
Step S303: judge in current network whether the binding channel is arranged, if having, enter step S304, if do not have, enter step S307;
Judge in current network and whether have the mode of binding channel to be: but poll reads the channel quality of all working channels of this AP that each AP scanning channel of AC management and control obtains, the channel number of each AP work at present and the working channel of each neighbor AP, whether the AP of judgement in the AC administrative area has the situation that this AP and adjacent area AP use binding channel detected;
Step S304: whether the WAP (wireless access point) that judges use binding channel in current network is all controlled, if all controlled, enters step S305, if not all controlled, enter step S306;
Step S305: judge that whether current channel set is busy, whether the channel resource in channel set is sufficient, and its basis for estimation is main but be not limited to: the information such as the busy extent of each channel, throughput size and number of users quantity in channel set; If channel resource is in short supply, can remove the channel binding in current channel set, the perhaps little channel set in selective channel interval, if channel resource abundance, can choose and disturb minimum primary channel, the selective channel binding forms channel set (selecting this channel set) according to demand again, and when this step completes, channel set selects flow process to finish;
Step S306: the channel set of selecting to comprise the binding channel that uncontrolled WAP (wireless access point) is used, if occur, several uncontrolled AP adopt different 40M bound channels, choose channel set and disturb minimum channel set to be arranged, when this step completes, channel set selects flow process to finish;
Step S307: judged whether to detect interference source, if the controlled step S308 that enters of interference source and interference source detected, if detect, interference source and interference source are uncontrollable enters step S309, if interference source detected, does not carry out any operation, and channel set selects flow process to finish;
Enter step S308: for the adjacent AP of AP corresponding to interference source and this AP redistributes channel;
Now do not reselect channel set, that is to say, also to adopt original channel set;
Enter step S309: choose the primary channel collection at the shared channel of interference source place, enter step S310;
Enter step S310: the channel in this channel set is bundled according to the best adjacent channel of binding demand selective channel condition, and channel set selects flow process to finish.
It should be noted that, it is to have triggered channel set with AP to be chosen as example and to describe that above-mentioned channel set is selected example, if the initial channel collection is selected, general channel set corresponding to 2.4GHz frequency range that distributes acquiescence, as selected the channel set consisted of 1,6,11 channels.
Shown in Figure 4, be the schematic flow sheet of 5.8GHz frequency range channel set selection example.As shown in Figure 4, in the present embodiment, aforesaid selective channel collection can comprise the steps:
Step S401: whether the channelling mode that judgement triggers the AP of channel set selection is pressure channel tie-in mode, if, enter step S409, if not, enter step S402;
Step S402: judge in current network whether the binding channel is arranged, if having, enter step S403, if do not have, enter step S404;
Judge in current network and whether have the mode of binding channel to be: but poll reads the channel quality of all working channels of this AP that each AP scanning channel of AC management and control obtains, the channel number of each AP work at present and the working channel of each neighbor AP, whether the AP of judgement in the AC administrative area has the situation that this AP and adjacent area AP use binding channel detected;
Step S403: select the channel set of the 5.8GHz of acquiescence, the channel set of the 5.8GHz of this acquiescence is predefined, and when this step completes, channel set selects flow process to finish;
Step S404: judge whether to use the AP of binding channel to be that AC can control, if all controlled, enter step S407, if not all controlled, enter step S405;
Step S405: select to comprise the channel set of the binding channel that uncontrolled WAP (wireless access point) is used, enter step S406;
Step S406: whether the selected channel set gone out is unique, if unique, finishes the selection flow process of channel set, determines this unique channel set, if not unique, enters step S409;
Step S407: judge whether to remove the channel binding, thereby discharge channel resource, if channel resource is limited, need to close this function, enter step S408, if conditions permit needn't be removed the channel binding, enter step S409;
Step S408: remove the channel binding, discharge channel resource, select the 5.8GHz channel set to be distributed;
Step S409: if the ratio of quantity and the total quantity of the WAP (wireless access point) in current network of WAP (wireless access point) of supporting IEEE802.11n WLAN in current network is over default threshold value, take IEEE802.11nWLAN as main, select to comprise the channel set of the adjacent channel of two groups of optimums that select according to channel quality as the binding channel, comprise selected one group; If in current network, the ratio of the total quantity of the quantity of the WAP (wireless access point) of support IEEE802.11n WLAN and the WAP (wireless access point) in current network surpasses default threshold value, select to comprise the channel set of the adjacent channel of the one group of optimum selected according to channel quality as the binding channel, comprise selected one group; Wherein, two comprise that selected one group refers to: for the situation in step S405, the channel set that comprises the binding channel that uncontrolled AP is used, situation for the adjacent channel of selecting two groups of optimums as the binding channel, only select again one group, for the adjacent channel of selecting one group of optimum, as the binding channel, no longer select.
It should be noted that, it is to have triggered channel set with AP to be chosen as example and to describe that above-mentioned channel set is selected example, if the initial channel collection is selected, channel set corresponding to 5.8GHz frequency range that general distribution is given tacit consent to, as selected the channel set consisted of 149,153,157,161,165 channels.
According to the method for channel allocation of the invention described above, the present invention also provides a kind of channel assigning system, below with regard to the embodiment of channel assigning system of the present invention, is elaborated.The structural representation of several embodiment of channel assigning system of the present invention has been shown in Fig. 5～Fig. 8.For convenience of explanation, part related to the present invention only is shown in Fig. 5～Fig. 8.
Shown in Figure 5, be the structural representation of an embodiment of channel assigning system of the present invention.As shown in Figure 5, the channel assigning system in the present embodiment, comprise channel set selection module 501, channel set distribution module 502, scanning result acquisition module 503, destination channel determination module 504, destination channel distribution module 505, wherein:
Channel set is selected module 501, for selecting the channel set corresponding with access controller;
Channel set distribution module 502, for distributing to described channel set the WAP (wireless access point) of described access controller institute management and control;
Scanning result acquisition module 503, for scanning and obtain scanning result the channel of described channel set by described WAP (wireless access point);
Destination channel determination module 504, for determining destination channel according to described scanning result;
Destination channel distribution module 505, for distributing to described WAP (wireless access point) by described destination channel.
Therein in embodiment, destination channel determination module 504 is pressure channel tie-in mode at the channelling mode of described WAP (wireless access point) configuration, and, when the binding channel is arranged in the channel set of current distribution, according to described scanning result, the binding channel of the communication quality the best in the channel set of current distribution is defined as to destination channel; Destination channel determination module 504 is pressure channel tie-in mode at the channelling mode of described WAP (wireless access point) configuration, and when in the channel set of current distribution, nothing bundlees channel, select module transmitting channel selection instruction to described channel set, described channel set selects module to reselect channel set according to this channel selection instruction.
Therein in embodiment, as shown in Figure 6, channel assigning system of the present invention can also comprise update module 506, this update module 506 is the adaptive channel tie-in mode for the channelling mode in described WAP (wireless access point) configuration, and have when meeting the binding condition bundled with described destination channel and meeting the channel that communication quality requires, this satisfied binding condition and the channel and the destination channel that meet the communication quality requirement are bundled, and upgraded described destination channel with the binding channel obtained after binding.
Therein in embodiment, as shown in Figure 7, channel assigning system of the present invention can also comprise radar signal detection module 507, this radar signal detection module 507 is for searching according to described scanning result the channel that described channel set does not detect radar signal, determine alternative channel set according to the channel found, if the number of channel in described alternative channel set is zero, to described channel set, select module transmitting channel selection instruction, correspondingly, channel set selects 501 of modules to reselect channel set according to this channel selection instruction.
Therein in embodiment, as shown in Figure 8, channel set selects module 501 can comprise that 2.4GHz frequency range channel set selects module 501A and/or 5.8GHz frequency range channel set to select module 501B, wherein:
2.4GHz the frequency range channel set selects module 501A can comprise the first judging unit 5011, the second judging unit 5012, the 3rd judging unit 5013, the first channel set selected cell 5014, wherein:
Whether the first judging unit 5011 is to force the channel tie-in mode for the channelling mode that judges described WAP (wireless access point);
When the second judging unit 5012 is no for the result of determination at the first judging unit 5011, judges in current network whether the binding channel is arranged;
When the 3rd judging unit 5013 is no for the result of determination at the second judging unit 5012, judge that whether the interference source in current network is controlled,
Described the first channel set selected cell in the result of determination of the first judging unit 5011 when being, selection comprises the binding channel and disturbs minimum channel set, for the result of determination at the second judging unit 5012, be also to be and WAP (wireless access point) that current network is used binding channel when all controlled, remove in current network the channel binding of the WAP (wireless access point) of using the binding channel, the perhaps little channel set in selective channel interval, perhaps select to disturb after minimum primary channel the binding of carrying out primary channel, form channel set by the primary channel after binding again, the result of determination of the second judging unit 5012 be and current network in use the WAP (wireless access point) of binding channel non-when all controlled, selection comprises the channel set of the binding channel that uncontrolled WAP (wireless access point) is used, also for the result of determination at the 3rd judging unit 5013 when being, for the WAP (wireless access point) that interference source is corresponding is redistributed channel, in the result of determination of the 3rd judging unit 5013 while being no, selection comprises the channel set of interference source place channel, and the channel in this channel set is bundled according to the best adjacent channel of binding demand selective channel condition,
5.8GHz the frequency range channel set selects module 501B can comprise the 4th judging unit 5015, the 5th judging unit 5016, the 6th judging unit 5017, second channel collection selected cell 5018, wherein:
Whether the 4th judging unit 5015 is to force the channel tie-in mode for the channelling mode that judges described WAP (wireless access point);
When the 5th judging unit 5016 is no for the result of determination at the 4th judging unit 5015, judges in current network whether the binding channel is arranged;
The 6th judging unit 5017 when being, judges in current network that whether use the WAP (wireless access point) of binding channel all controlled for the result of determination at the 4th judging unit 5015;
Described second channel collection selected cell is for being to be and the ratio of quantity and the total quantity of the WAP (wireless access point) in current network of WAP (wireless access point) that current network is supported IEEE802.11n WLAN during over default threshold value in the result of determination of the 4th judging unit 5015, selection comprises the channel set of the adjacent channel of two groups of optimums that select according to channel quality as the binding channel, the result of determination of the 4th judging unit 5015 be and current network in support IEEE802.11n WLAN the ratio of quantity and the total quantity of the WAP (wireless access point) in current network of WAP (wireless access point) during over default threshold value, selection comprises the channel set of the adjacent channel of the one group of optimum selected according to channel quality as the binding channel, while being also no for the result of determination at the 5th judging unit 5016, select the channel set of the 5.8GHz of acquiescence, the channel set of the 5.8GHz of this acquiescence is predefined channel set, while being also no for the result of determination at the 6th judging unit, selection comprises the channel set of the binding channel that uncontrolled WAP (wireless access point) is used, and when the channel set of selecting is unique, complete the selection of channel set, the ratio of quantity and the total quantity of the WAP (wireless access point) in current network of WAP (wireless access point) of supporting IEEE802.11n WLAN at the channel set of selecting in not unique and current network is during over default threshold value, selection comprises the channel set of the adjacent channel of two groups of optimums that select according to channel quality as the binding channel, wherein, two groups of binding channels comprise the binding channel that uncontrolled WAP (wireless access point) is used, the ratio of quantity and the total quantity of the WAP (wireless access point) in current network of WAP (wireless access point) of supporting IEEE802.11n WLAN at the channel set of selecting in not unique and current network is during over default threshold value, selection comprises the channel set of the binding channel that uncontrolled WAP (wireless access point) is used, also for the result of determination at the 6th judging unit 5017 when being, judge whether to remove the channel binding, if remove the channel binding, select the channel set of the 5.8GHz of acquiescence, if do not remove the channel binding, when in current network, the ratio of the total quantity of the quantity of the WAP (wireless access point) of support IEEE802.11n WLAN and the WAP (wireless access point) in current network surpasses default threshold value, selection comprises the channel set of the adjacent channel of two groups of optimums that select according to channel quality as the binding channel, when in current network, the ratio of the total quantity of the quantity of the WAP (wireless access point) of support IEEE802.11n WLAN and the WAP (wireless access point) in current network surpasses default threshold value, selection comprises the channel set of the adjacent channel of the one group of optimum selected according to channel quality as the binding channel.
Channel assigning system of the present invention is corresponding one by one with method for channel allocation of the present invention, during the technical characterictic of setting forth at the embodiment of above-mentioned method for channel allocation and beneficial effect thereof all are applicable to the embodiment of channel assigning system, and statement hereby.
The above embodiment has only expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.
Claims (10)
1. a method for channel allocation, is characterized in that, comprises the steps:
Select the channel set corresponding with access controller;
Described channel set is distributed to the WAP (wireless access point) of described access controller institute management and control;
By described WAP (wireless access point), the channel in described channel set is scanned and obtains scanning result;
Determine destination channel according to described scanning result;
Described destination channel is distributed to described WAP (wireless access point).
2. method for channel allocation according to claim 1, is characterized in that, describedly according to described scanning result, determines that destination channel comprises step:
If the channelling mode of described WAP (wireless access point) configuration is pressure channel tie-in mode, and the binding channel is arranged in the channel set of current distribution, according to described scanning result, the binding channel of the communication quality the best in the channel set of current distribution is defined as to destination channel;
If the channelling mode of described WAP (wireless access point) configuration is for forcing the channel tie-in mode, and nothing binding channel in the channel set of current distribution, reselect channel set.
3. method for channel allocation according to claim 1, is characterized in that, described, according to described scanning result, determine destination channel and described described destination channel is distributed between described WAP (wireless access point) and comprised step:
If the channelling mode of described WAP (wireless access point) configuration is the adaptive channel tie-in mode, and have and meet the binding condition bundled with described destination channel and meet the channel that communication quality requires, the channel and the destination channel that this are met to the binding condition and meet the communication quality requirement are bundled, and upgrade described destination channel with the binding channel obtained after binding.
4. method for channel allocation according to claim 1, is characterized in that, in the described step that also comprises before determining destination channel according to described scanning result:
Search the channel that radar signal do not detected in described channel set according to described scanning result, according to the channel found, determine alternative channel set;
If the number of channel in described alternative channel set is zero, reselect channel set.
5. method for channel allocation according to claim 1 is characterized in that:
The frequency range of the channel set that described access controller is corresponding is the 2.4GHz frequency range;
The described selection channel set corresponding with access controller comprises the steps:
Whether the channelling mode that judges described WAP (wireless access point) is to force the channel tie-in mode;
If force the channel tie-in mode, select comprise the binding channel and disturb minimum channel set;
If not force the channel tie-in mode, judge in current network whether the binding channel is arranged;
If the binding channel is arranged, when the WAP (wireless access point) of in current network, using the binding channel is all controlled, remove in current network the channel binding of the WAP (wireless access point) of using the binding channel, the perhaps little channel set in selective channel interval, perhaps select to disturb after minimum primary channel the binding of carrying out primary channel, form channel set by the primary channel after binding again, in current network, use the WAP (wireless access point) of binding channel non-when all controlled, select to comprise the channel set of the binding channel that uncontrolled WAP (wireless access point) is used;
If do not bundle channel, judge that whether the interference source in current network is controlled;
If interference source is controlled, for WAP (wireless access point) corresponding to interference source, redistribute channel;
If interference source is not controlled, selects to comprise the channel set of interference source place channel, and the channel in this channel set is bundled according to the best adjacent channel of binding demand selective channel condition.
6. method for channel allocation according to claim 1 is characterized in that:
The frequency range of the channel set that described access controller is corresponding is the 5.8GHz frequency range;
Whether the channelling mode that judges described WAP (wireless access point) is to force the channel tie-in mode;
If force the channel tie-in mode, when in current network, the ratio of the total quantity of the quantity of the WAP (wireless access point) of support IEEE802.11n WLAN and the WAP (wireless access point) in current network surpasses default threshold value, selection comprises the channel set of the adjacent channel of two groups of optimums that select according to channel quality as the binding channel, when in current network, the ratio of the total quantity of the quantity of the WAP (wireless access point) of support IEEE802.11n WLAN and the WAP (wireless access point) in current network surpasses default threshold value, selection comprises the channel set of the adjacent channel of the one group of optimum selected according to channel quality as the binding channel,
If not force the channel tie-in mode, judge in current network whether the binding channel is arranged;
If do not bundle channel in current network, select the channel set of the 5.8GHz of acquiescence, the channel set of the 5.8GHz of this acquiescence is predefined channel set;
If the binding channel is arranged in current network, judge that whether the WAP (wireless access point) of use binding channel in current network is all controlled;
If not all controlled, select to comprise the channel set of the binding channel that uncontrolled WAP (wireless access point) is used, and when the channel set of selecting is unique, complete the selection of channel set, when the channel set of selecting is not unique, if in current network, the ratio of the total quantity of the quantity of the WAP (wireless access point) of support IEEE802.11n WLAN and the WAP (wireless access point) in current network surpasses default threshold value, select to comprise the channel set of the adjacent channel of two groups of optimums that select according to channel quality as the binding channel, wherein, two groups of binding channels comprise the binding channel that uncontrolled WAP (wireless access point) is used, if in current network, the ratio of the total quantity of the quantity of the WAP (wireless access point) of support IEEE802.11n WLAN and the WAP (wireless access point) in current network surpasses default threshold value, selection comprises the channel set of the binding channel that uncontrolled WAP (wireless access point) is used,
If all controlled, judge whether to remove the channel binding, if remove the channel binding, select the channel set of the 5.8GHz of acquiescence, if do not remove the channel binding, when in current network, the ratio of the total quantity of the quantity of the WAP (wireless access point) of support IEEE802.11n WLAN and the WAP (wireless access point) in current network surpasses default threshold value, selection comprises the channel set of the adjacent channel of two groups of optimums that select according to channel quality as the binding channel, when in current network, the ratio of the total quantity of the quantity of the WAP (wireless access point) of support IEEE802.11n WLAN and the WAP (wireless access point) in current network surpasses default threshold value, selection comprises the channel set of the adjacent channel of the one group of optimum selected according to channel quality as the binding channel.
7. a channel assigning system, is characterized in that, comprising:
Channel set is selected module, for selecting the channel set corresponding with access controller;
The channel set distribution module, for distributing to described channel set the WAP (wireless access point) of described access controller institute management and control;
The scanning result acquisition module, for scanning and obtain scanning result the channel of described channel set by described WAP (wireless access point);
The destination channel determination module, for determining destination channel according to described scanning result;
The destination channel distribution module, for distributing to described WAP (wireless access point) by described destination channel.
8. channel assigning system according to claim 7 is characterized in that:
Described destination channel determination module is pressure channel tie-in mode at the channelling mode of described WAP (wireless access point) configuration, and, when the binding channel is arranged in the channel set of current distribution, according to described scanning result, the binding channel of the communication quality the best in the channel set of current distribution is defined as to destination channel;
Described destination channel determination module is pressure channel tie-in mode at the channelling mode of described WAP (wireless access point) configuration, and when in the channel set of current distribution, nothing bundlees channel, select module transmitting channel selection instruction to described channel set, described channel set selects module to reselect channel set according to this channel selection instruction.
9. channel assigning system according to claim 7 is characterized in that:
Also comprise update module, this update module is the adaptive channel tie-in mode for the channelling mode in described WAP (wireless access point) configuration, and have when meeting the binding condition bundled with described destination channel and meeting the channel that communication quality requires, this satisfied binding condition and the channel and the destination channel that meet the communication quality requirement are bundled, and upgraded described destination channel with the binding channel obtained after binding;
Perhaps/and
Radar signal detection module, for according to described scanning result, searching the channel that described channel set does not detect radar signal, determine alternative channel set according to the channel found, if the number of channel in described alternative channel set is zero, to described channel set, select module transmitting channel selection instruction, described channel set selects module to reselect channel set according to this channel selection instruction.
10. channel assigning system according to claim 7, is characterized in that, described channel set selects module to comprise 2.4GHz frequency range channel set selection module and/or 5.8GHz frequency range channel set selection module;
Described 2.4GHz frequency range channel set selects module to comprise the first judging unit, the second judging unit, the 3rd judging unit, the first channel set selected cell, wherein:
Whether described the first judging unit is to force the channel tie-in mode for the channelling mode that judges described WAP (wireless access point);
Described the second judging unit is for, judging in current network whether the binding channel is arranged while being no in the result of determination of described the first judging unit;
Described the 3rd judging unit is in the result of determination of described the second judging unit, while being no, judging that whether the interference source in current network is controlled,
Described the first channel set selected cell in the result of determination of described the first judging unit when being, selection comprises the binding channel and disturbs minimum channel set, for the result of determination at described the second judging unit, be also to be and WAP (wireless access point) that current network is used binding channel when all controlled, remove in current network the channel binding of the WAP (wireless access point) of using the binding channel, the perhaps little channel set in selective channel interval, perhaps select to disturb after minimum primary channel the binding of carrying out primary channel, form channel set by the primary channel after binding again, the result of determination of described the second judging unit be and current network in use the WAP (wireless access point) of binding channel non-when all controlled, selection comprises the channel set of the binding channel that uncontrolled WAP (wireless access point) is used, also for the result of determination at described the 3rd judging unit when being, for the WAP (wireless access point) that interference source is corresponding is redistributed channel, in the result of determination of described the 3rd judging unit while being no, selection comprises the channel set of interference source place channel, and the channel in this channel set is bundled according to the best adjacent channel of binding demand selective channel condition,
Described 5.8GHz frequency range channel set selects module to comprise the 4th judging unit, the 5th judging unit, the 6th judging unit, second channel collection selected cell, wherein:
Whether described the 4th judging unit is to force the channel tie-in mode for the channelling mode that judges described WAP (wireless access point);
Described the 5th judging unit is for, judging in current network whether the binding channel is arranged while being no in the result of determination of described the 4th judging unit;
Described the 6th judging unit in the result of determination of described the 4th judging unit when being, whether all controlledly judge that use in current network bundlees the WAP (wireless access point) of channel;
Described second channel collection selected cell is for being to be and the ratio of quantity and the total quantity of the WAP (wireless access point) in current network of WAP (wireless access point) that current network is supported IEEE802.11n WLAN during over default threshold value in the result of determination of described the 4th judging unit, selection comprises the channel set of the adjacent channel of two groups of optimums that select according to channel quality as the binding channel, the result of determination of described the 4th judging unit be and current network in support IEEE802.11n WLAN the ratio of quantity and the total quantity of the WAP (wireless access point) in current network of WAP (wireless access point) during over default threshold value, selection comprises the channel set of the adjacent channel of the one group of optimum selected according to channel quality as the binding channel, while being also no for the result of determination at the 5th judging unit, select the channel set of the 5.8GHz of acquiescence, the channel set of the 5.8GHz of this acquiescence is predefined channel set, while being also no for the result of determination at the 6th judging unit, selection comprises the channel set of the binding channel that uncontrolled WAP (wireless access point) is used, and when the channel set of selecting is unique, complete the selection of channel set, the ratio of quantity and the total quantity of the WAP (wireless access point) in current network of WAP (wireless access point) of supporting IEEE802.11n WLAN at the channel set of selecting in not unique and current network is during over default threshold value, selection comprises the channel set of the adjacent channel of two groups of optimums that select according to channel quality as the binding channel, wherein, two groups of binding channels comprise the binding channel that uncontrolled WAP (wireless access point) is used, the ratio of quantity and the total quantity of the WAP (wireless access point) in current network of WAP (wireless access point) of supporting IEEE802.11n WLAN at the channel set of selecting in not unique and current network is during over default threshold value, selection comprises the channel set of the binding channel that uncontrolled WAP (wireless access point) is used, also for the result of determination at described the 6th judging unit when being, judge whether to remove the channel binding, if remove the channel binding, select the channel set of the 5.8GHz of acquiescence, if do not remove the channel binding, when in current network, the ratio of the total quantity of the quantity of the WAP (wireless access point) of support IEEE802.11n WLAN and the WAP (wireless access point) in current network surpasses default threshold value, selection comprises the channel set of the adjacent channel of two groups of optimums that select according to channel quality as the binding channel, when in current network, the ratio of the total quantity of the quantity of the WAP (wireless access point) of support IEEE802.11n WLAN and the WAP (wireless access point) in current network surpasses default threshold value, selection comprises the channel set of the adjacent channel of the one group of optimum selected according to channel quality as the binding channel.
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Granted publication date: 20160817 |