CN103442445B - Method for channel allocation and system - Google Patents
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Abstract
The present invention provides a kind of method for channel allocation and system, and its method includes step: select the channel set corresponding with access controller；Described channel set is distributed to the WAP of described access controller institute management and control；It is scanned obtaining scanning result to the channel in described channel set by described WAP；Destination channel is determined according to described scanning result；Described destination channel is distributed to described WAP.The present invention can interfering between maximized minimizing AP, improve the work efficiency of AP, also improve the whole network performance.
Description
Technical field
The present invention relates to radio network technique field, particularly relate to a kind of method for channel allocation and system.
Background technology
In current mobile communications system, channel allocation algorithm is broadly divided into three major types: fixed channel assignment, dynamic
The distribution of state channel and accidental channel distribute.But unlike mobile communications network, WLAN (wireless office
Territory net) efficient channel number be limited, channel is that the most rare resource, such as 802.11b/g/n exist
2.4GHz frequency range only has three efficient channels to use, each wireless access point AP (Access Point) and use
Family STA (station) ensures that the channel being currently in use with other does not produce overlapping as far as possible.Current movement
Communication network can distribute different channels to user dynamically according to the size of user load, and wlan network
Channel distribution mode is distinct with the Channel distribution mode of mobile network, and main purpose is to disclosure satisfy that
User's request, avoids the interference between user as far as possible, promotes speed and the handling capacity of user.At 802.11n
In network, defining 2.4GHz frequency range and the wlan standard of 5.8GHz frequency range, 802.11n defines simultaneously
Two kinds of bandwidths: 20MHz Yu 40MHz frequency range (HT20 and HT40), according to the reality to bandwidth
Demand, AP possible configuration is to force channel tie-in mode, i.e. uses 40MHz frequency range, it is also possible to configuration
Self adaptation tie-in mode, the most not only can use 40MHz frequency range but 20MHz frequency range can be used but preferably
20MHz frequency range, and except this being configured in addition to two uses the pattern of 20MHz frequency range.40MHz frequency range
It is that the channel of two 20MHz frequency ranges is bundled, to obtain handling up of the 20MHz frequency range higher than 2 times
Amount.Tied two 20MHz channels one are main channel, and one is auxiliary channel.Main channel sends beacon
Message and part data message；Auxiliary channel sends other messages.
The Channel Assignment Problems of 802.11n network, indeed through effective channel plan with optimize and revise,
Common-channel interference between AP is preferably minimized.According to the system configuration of current wlan network, by it
Network's coverage area is divided into several communities, and each AP covers a community, and according to multiplex mode, often
The AP of individual community uses a channel.When laying large-scale wlan network, will occur that AP number is big
Situation in available efficient channel number.And the most available limited efficient channel is distributed to some
Individual community AP so that systematic function is effectively improved, is that the core of wlan network channel distribution is thought
Think.
Current techniques includes for the key step of AP distribution channel in wlan network: scan channel, letter
Road judgement, channel distribution, by the AP scanning result to all efficient channels, it is judged that whether its channel condition
Meet communicating requirement, and show that preferred channels is allocated so that this AP is operated on the channel of distribution.
But it is separate owing to the channel of each AP distributes, it is impossible to avoid the channel disturbance between AP, thus, make
Become the channel disturbance between AP big, also reduced the work efficiency of AP, be unfavorable for the raising of the whole network performance.
Summary of the invention
It is an object of the invention to provide a kind of method for channel allocation and system, can effectively reduce the letter between AP
Road disturbs, and improves the work efficiency of AP.
The purpose of the present invention is achieved through the following technical solutions:
A kind of method for channel allocation, comprises the steps:
Select the channel set corresponding with access controller；
Described channel set is distributed to the WAP of described access controller institute management and control；
It is scanned obtaining scanning result to the channel in described channel set by described WAP；
Destination channel is determined according to described scanning result；
Described destination channel is distributed to described WAP；
Wherein, described determine that destination channel includes step according to described scanning result:
If the channelling mode of described WAP configuration is for forcing channel tie-in mode, and the letter of current distribution
Road is concentrated with bundling channel, then the communication quality in the channel set that will currently distribute according to described scanning result is
Good binding channel is defined as destination channel；
If the channelling mode of described WAP configuration is for forcing channel tie-in mode, and the letter of current distribution
Road is concentrated without binding channel, then reselect channel set.
A kind of channel assigning system, including:
Channel set selects module, for selecting the channel set corresponding with access controller；
Channel set distribution module, for distributing to the wireless of described access controller institute management and control by described channel set
Access point；
Scanning result acquisition module, for carrying out the channel in described channel set by described WAP
Scanning obtains scanning result；
Destination channel determines module, for determining destination channel according to described scanning result；
Destination channel distribution module, for distributing to described WAP by described destination channel；
Wherein, described destination channel determines that module is pressure letter at the channelling mode that described WAP configures
Road tie-in mode, and when the channel of current distribution is concentrated with bundling channel, will be current according to described scanning result
The optimal binding channel of communication quality in the channel set of distribution is defined as destination channel；
Described destination channel determines that module is pressure channel binding at the channelling mode that described WAP configures
Time in pattern, and the channel set of current distribution without binding channel, module is selected to send channel to described channel set
Selecting instruction, described channel set selects module to reselect channel set according to this channel selection instruction.
According to the scheme of the invention described above, it is after selecting the channel set corresponding with access controller, should
Channel set distributes to the WAP of this access controller institute management and control, by described WAP to described
Channel in channel set is scanned obtaining scanning result, determines destination channel according to this scanning result, then will
Described destination channel distributes to described WAP, due to the channel set currently selected to AP distribution, and
Destination channel is determined, i.e. at letter by then passing through the scanning result that the scan channel in this channel set obtains by AP
Road is concentrated and is selected destination channel, each AP of AC management and control be have employed unified channel set (currently selected
Channel set), it is possible to according to the reasonable disposition to channel set so that channel selected between AP is in orthogonal
Situation, it is possible to interfering of the channel between maximized minimizing AP, improves the work efficiency of AP, also carries
High the whole network performance, meanwhile, in order to improve the network rate of user, also needs AP to meet 40MHz's as far as possible
Working condition, and use HT40 pattern at a high speed to communicate as far as possible, described according to described scanning result
Determine that destination channel includes step: if the channelling mode of described WAP configuration is for forcing channel binding mould
Formula, and the channel of current distribution is concentrated with bundling channel, the then letter that will currently distribute according to described scanning result
The binding channel that the communication quality of road concentration is optimal is defined as destination channel, if the configuration of described WAP
Channelling mode is for forcing channel tie-in mode, and without binding channel in the channel set of current distribution, the most again selects
Select channel set.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of the method for channel allocation embodiment of the present invention；
Fig. 2 is the schematic flow sheet of one specific embodiment of method for channel allocation of the present invention；
Fig. 3 is the schematic flow sheet of the channel set selection example of 2.4GHz frequency range；
Fig. 4 is the schematic flow sheet of the channel set selection example of 5.8GHz frequency range；
Fig. 5 is the schematic flow sheet of one embodiment of channel assigning system of the present invention；
Fig. 6 is the structural representation of another embodiment of channel assigning system of the present invention；
Fig. 7 is the structural representation of the 3rd embodiment of channel assigning system of the present invention；
Fig. 8 is the refinement structural representation that the channel set in Fig. 5～Fig. 7 selects module.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the present invention is further elaborated, but the implementation of the present invention does not limits
In this.
The method for channel allocation of the present invention may be used for IEEE802.11n WLAN, equally, it is also possible to be used for
IEEE802.11a WLAN, IEEE802.11b WLAN or IEEE802.11g WLAN, have preferably
Application prospect, it is adaptable to the network architecture is the group-network construction of AC (access controller)+AP.
Shown in Figure 1, for the schematic flow sheet of the method for channel allocation embodiment of the present invention.Such as Fig. 1 institute
Showing, 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 mainly selects according to the actual requirements, when carrying out the selection of channel set, and can
Selectively to consider following factor:
1) channel set during initial channel distribution selects, and according to the most basic channel set of each frequency range, selects without bundle
Tie up the channel set of channel, such as, for 2.4GHz frequency range, select the channel being made up of 1,6,11 channels
Collection, selects by 149,153,157,161,165 structures for 5.8GHz (as a example by CONTINENTAL AREA OF CHINA)
The channel set become；
2) system resource, load and user's request situation are considered；Such as: interference level is moderate, for 2.4GHz
Frequency range, using channel spacing in channel set is the channel set (letter such as, being made up of 1,6,11 channels of 5
Road collection, the channel set being made up of 2,7,12 channels or the channel set being made up of 3,8,13 channels)；
Total interference is relatively big, when the spuious index of AP is poor, can use the bigger channel set of channel spacing (such as, by 1,
7, the channel set that 13 channels are constituted)；Total interference is less, channeling difficulty, when network capacity requirements is the highest,
The channel set that in channel set, channel spacing is less can be used (such as, to be made up of 1,5,9,13 channels
Channel set), when using binding channel hoist capacity, 40MHz frequency range preferably uses in 5.8GHz frequency range；
3) considering interference source factor, the interference as far as possible interference source judged brought reduces, the most some
Disturb source AP controlled, then adjust interference source AP channel to channel optimal in channel set so that it is to other
AP interferes minimizing, if interference source is uncontrollable, then adjusts channel set self used by AC administration AP；
4) promote power system capacity as far as possible, use the configuration of IA High Speed Channel collection；
One or more above-mentioned factor can be considered, it is also possible to consider other factors when selecting channel set；
Step S102: described channel set is distributed to the WAP of access controller institute management and control；
A general multiple AP of AC management and control, can distribute system for the AP in a panel region of AC management and control
The channel set of one, by the reasonable disposition to this channel set, so that in this panel region between AP, STA
Working channel between work station is mutually orthogonal channel, interferes and minimizes；
Step S103: be scanned obtaining scanning to the channel in described channel set by described WAP
Result；
WAP is scanned measuring the channel conditions of each channel to the channel in described channel set, reaction
The parameter of channel conditions mainly includes receiving signal designation intensity RSSI, channel estimates busy cycle CCA, neighbour
AP quantity, packet error rate PER etc., therefore, generally comprise reception signal designation intensity in scanning result
RSSI, channel estimate busy cycle CCA, the adjacent information such as AP quantity, packet error rate PER, in scanning result
Can also include whether each channel has radar signal etc., scanning channel can periodically be carried out, it is also possible to is
Carry out scan channel again when determining channel distribution, but use periodic scan channel can effectively promote letter
Road assigning process ageing；
Step S104: determine destination channel according to described scanning result；
Determine destination channel can by use existing arbitrarily can with realization in the way of, for example, it is possible to by scanning
Result determines the communication quality of each channel (channel in described channel set), selects the letter that communication quality is optimal
Road is as destination channel, and one of which preferably mode is to determine the reference of each channel in channel set by calculating
Interference value, and generate the transition probability of each channel in channel set according to this reference interference value, to avoid different AP
Determine collision situation when destination channel switches over, determine destination channel further according to the size of transition probability:
Step S105: described destination channel is distributed to described WAP；
Being described WAP assignment channel is destination channel.
Accordingly, according to the scheme in above-described embodiment, it is to select the channel set corresponding with access controller
After, this channel set is distributed to the WAP of this access controller institute management and control, by described wireless access
Channel in described channel set is scanned obtaining scanning result by point, determines that target is believed according to this scanning result
Road, more described destination channel is distributed to described WAP, due to the letter currently selected to AP distribution
Road collection, and by then passing through AP, the scanning result that the scan channel in this channel set obtains is determined that target is believed
Road, i.e. selects destination channel in channel set, each AP of AC management and control be have employed unified channel set (when
Channel set selected by before), it is possible to according to the reasonable disposition to channel set so that letter selected between AP
Road is in quadrature condition, it is possible to interfering of the channel between maximized minimizing AP, improves the work of AP
Efficiency, also improves the whole network performance.
It is contemplated that in 802.11n network, in order to improve the network rate of user, also need AP the fullest
The working condition of foot 40MHz, and use HT40 pattern at a high speed to communicate as far as possible, to this end,
In one of them embodiment, according to described scanning result, above-mentioned determines that destination channel can include step: if
The channelling mode of described WAP configuration is for forcing in channel tie-in mode, and the channel set of currently distribution
There is a binding channel, then the bundle that communication quality in the channel set that will currently distribute according to described scanning result is optimal
Tie up channel and be defined as destination channel；If the channelling mode of described WAP configuration is for forcing channel binding mould
Without binding channel in formula, and the channel set of current distribution, then reselect channel set.
In the present embodiment, for some users higher to bandwidth requirement, it may be desirable to configuration HT40 pattern,
I.e. force channel tie-in mode, if at this moment channel set having binding channel, then by bundle optimal for communication quality
Tie up channel and be defined as destination channel, when bundling channel for only one of which in channel set, then by this binding
Channel is defined as destination channel, if without binding channel in channel set, the most current channel set can not meet user
Bandwidth requirement, then need to reselect channel set, with obtain include bundle channel channel set, again
After selecting channel set, then the channel set reselected is distributed to each AP of AC management and control.
In order to improve the network rate of user, and HT40 pattern at a high speed is used to communicate as far as possible, for
This, wherein in an embodiment, above-mentioned determine according to described scanning result destination channel step with on
That states distributes to can include between described WAP step step by described destination channel: if described nothing
Line access point configuration channelling mode be adaptive channel tie-in mode, and have meet enter with described destination channel
The binding condition of row binding and meet the channel of QoS requirement, then by this satisfied binding condition and meet logical
The channel of letter prescription bundlees with destination channel, and updates described with the binding channel obtained after binding
Destination channel.
According to the present embodiment, when being adaptive channel tie-in mode for WAP configuration, for
Make it use HT40 pattern at a high speed to communicate as far as possible, distinguish whether to have to meet and believe with described target
Road carries out the binding condition bundled and the channel meeting QoS requirement, and binding condition refers generally in channel set
Two adjacent channels just can bundle, such as, for including the channel set of 1,6,11 channels, only
1 channel and 6 channels or 6 channels and 11 channels just can bundle, and can not carry out 1 channel and 11
Binding between channel, if destination channel the most now is 1 channel, then needs to judge whether 6 channels meet
QoS requirement, if meeting, is bundling 1 channel and 6 channels, and by the bundle that obtains after bundling
Tie up channel and update described destination channel, destination channel will be updated to the binding channel of 1 channel and 6 channels.
Additionally, the most also there will be without can use the situation of frequency in channel set, i.e. each channel in channel set is equal
Unavailable, in this case, it is also desirable to re-start Channel assignment, therefore, an embodiment wherein
In, above-mentioned determine destination channel step according to described scanning result before can also include step: according to institute
State scanning result and search the channel being not detected by radar signal in described channel set, true according to the channel found
Fixed alternative channel set；If the number of channel in described alternative channel set is zero, then reselect channel set, accordingly
Ground, if the number of channel in described alternative channel set is not zero, then can communicate in selecting alternative channel set matter
Measure optimal channel as destination channel, the scheme implemented by this, present channel can be avoided to concentrate each letter
Road is all disturbed by radar signal and causes not can determine that the situation of target without available frequency.
For the ease of understanding the present invention, in conjunction with the scheme of above-mentioned several embodiments, below with a concrete reality
Executing example and illustrate the solution of the present invention, this specific embodiment is a preferably embodiment, but does not constitute this
The restriction of invention.
Specific embodiment
Shown in Figure 2, for the schematic flow sheet of specific embodiment of the method for channel allocation of the present invention.As
Shown in Fig. 2, the method for channel allocation in this specific embodiment comprises the steps:
Step S201: select channel set, the channel set selected is distributed to the AP of AC institute management and control, enters
Step S202；
After AP gets the channel set of distribution, scan channel, the letter of each channel in scanning channel set can be carried out
Road situation, and scanning result is fed back to AC, scanning result generally comprise reception signal designation intensity RSSI,
Channel estimates busy cycle CCA, the adjacent information such as AP quantity, packet error rate PER；
Step S202: judge whether each channel in channel set detects radar signal, the most then enter step
Rapid S203, if it is not, then 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 the channel being not detected by radar signal in channel set, put in alternative channel set,
Enter step 207；
Step S204: whether the channelling mode judging current AP is to force channel tie-in mode, if forcing
Tie-in mode, then enter step S205, if not forcing channel tie-in mode, then enters step S206；
Step S205: binding channel optimal for communication quality is defined as destination channel, if in described channel set
Without binding channel, then reselect channel set；
After reselecting channel set, all the channel set reselected is distributed to each AP of AC institute management and control every time；
Step S206: select good and without radar signal the alternative channel set of channel creation of channel condition；
The channel conditions of each channel in channel set can be detected one by one, therefrom according to the scanning result of AP feedback
Good and without radar signal the alternative channel set of channel creation of condition of selecting, enters step 207；
Step S207: judge that the number of channel in alternative channel set whether more than or equal to 1, the most then enters step
Rapid 209；If it is not, then enter step 208；
Step S208: think that present channel is concentrated without available channel, reselect channel set；
Step S209: determine the reference interference value of each channel in alternative channel set according to channel scan results
Intfref, enter step 210；
With reference to interference value IntfrefDetermination mode including, but not limited to interference, the RSSI of basis,
The information such as neighborCount, PER, AP flow, choose one or more and are weighted combination and ask
Take；
Step S210: determine each channel switching probability in alternative channel set, enters step 211；
Determine switching probability mode including, but not limited to: ask for each alternative channel interference values inverse as turn
Change proportionality coefficient, i.e.Wherein Switchcoeff.mRepresent the conversion of the alternative channel of m-th
Proportionality coefficient, Intfref.mRepresent the reference interference value of the alternative channel of m-th, by each conversion in alternative channel
Ratio value is added, and i.e. disturbs the biggest channel, and its switching probability is the lowest；
Step S211: rule out destination channel according to switching probability, enters step S212；
Step S212: judge whether current AP configure is adaptive channel tie-in mode, if so, enters
Step S213, if it is not, enter step S214；
Step S213: carry out, with described destination channel, the binding condition that bundlees if having to meet and meet communication quality
The channel required, then by this satisfied binding condition and meet the channel of QoS requirement and carry out with destination channel
Binding, and update described destination channel with the binding channel obtained after binding, if not meeting and described target
Channel carries out the binding condition bundled and the channel meeting QoS requirement, does not bundlees, and enters step
Rapid S214；
Step S214: destination channel is distributed to the AP of correspondence.
As it was previously stated, carrying out channel set selection when, it may be considered that different factors, in following enforcement
In example, four factors mentioned by summary illustrate as a example by carrying out the selection of channel set, but under state
Bright do not limit the selection of channel set only in following manner, it is also possible to be other any reasonable manners,
As only part considers above-mentioned four factors mentioned, or the factor considered include except above-mentioned four mentioned because of
Factor beyond element, or suitably adjust the order etc. of each step in following channel set selection flow process, but due to
After having reselected channel set every time, need each AP is redistributed the channel set selected, channel is being set
During the selection mode collected, consider more multifactor as far as possible, and avoid carrying out more frequently channel set selection.
The number of channel in view of 2.4GHz frequency range and 5.8GHz frequency range is different, thus, configuration is relatively
Also be different for the number of channel in rational channel set, such as, for 2.4GHz frequency range, due to only 1～
13 channels, in order to prevent from interfering between channel, (each channel i.e. as far as possible ensureing in channel set is the most just
Hand over), the channel set that typically channel spacing should be selected to be 5, general only 3 efficient channels in such channel set,
And these 3 channels at most can only constitute a binding channel, and for 5.8GHz frequency range, typically configure
Channel set can include 5 efficient channels, and these 5 channels may be constructed two binding channels.To this end,
In the following description, respectively two kinds of situations are illustrated.
Shown in Figure 3, the schematic flow sheet of example is selected for 2.4GHz band channels collection.As it is shown on figure 3,
In the present embodiment, aforesaid selection channel set may include steps of:
Step S301: judge whether the channelling mode triggering the AP that channel set selects is to force channel binding mould
Formula, the most then enter step S302, if it is not, then enter step S303；
Step S302: select to include bundling channel and the channel set of interference minimum；
When this step completes, channel set selects flow process to terminate, then can be reassigned to by the channel set of selection
Each AP of AC management and control；
Step S303: judge whether to have in current network binding channel, if having, then enters step S304, if
No, then step S307 is entered；
Judge whether current network has the mode of binding channel may is that poll reads each AP of AC management and control
This AP that scanning channel obtains all can the channel quality of working channel, the channel of each AP work at present is compiled
Number and the working channel of each neighbor AP, it is judged that whether the AP in AC administrative area detects this
AP and adjacent area AP uses the situation of binding channel；
Step S304: judge that the WAP using binding channel in current network is the most controlled, if all
Controlled, then enter step S305, if not the most controlled, then enter step S306；
Step S305: judging that present channel collection is the busiest, the channel resource in channel set is the most sufficient, its
Basis for estimation is main but is not limited to: the busy extent of each channel, handling capacity size and user in channel set
The information such as number quantity；If channel resource is in short supply, then can release the channel binding that present channel is concentrated, or
Select the channel set that channel spacing is little, if channel resource is sufficient, then can choose the primary channel that interference is minimum,
Channel binding is selected to constitute channel set (selecting this channel set), when this step completes, channel set further according to demand
Selection flow process terminates；
Step S306: select to include the channel set of the binding channel used by uncontrolled WAP, if going out
Several uncontrolled AP existing use different 40M bound channels, then choose the channel that channel set interference is minimum
Collection is configured, and when this step completes, channel set selects flow process to terminate；
Step S307: determine whether interference source to be detected, if detecting, interference source and interference source are controlled, enter
Enter step S308, if interference source and interference source uncontrollable entrance step S309 being detected, if being not detected by interference
Source does not the most carry out any operation, and channel set selects flow process to terminate；
Enter step S308: the adjacent AP of the AP corresponding for interference source and this AP redistributes channel；
The most do not reselect channel set, say, that also to use original channel set；
Enter step S309: choose the primary channel collection at channel place shared by interference source, enter step S310；
Enter step S310: the channel in this channel set is selected the best phase of channel condition according to binding demand
Side channel bundlees, and channel set selects flow process to terminate.
It should be noted that above-mentioned channel set selects example to be to trigger as a example by channel set selects by AP to say
Bright, if initial channel collection selects, then the channel set that the 2.4GHz frequency range of general distribution acquiescence is corresponding, such as choosing
Select the channel set being made up of 1,6,11 channels.
Shown in Figure 4, the schematic flow sheet of example is selected for 5.8GHz band channels collection.As shown in Figure 4,
In the present embodiment, aforesaid selection channel set may include steps of:
Step S401: judge whether the channelling mode triggering the AP that channel set selects is to force channel binding mould
Formula, the most then enter step S409, if it is not, then enter step S402；
Step S402: judge whether to have in current network binding channel, if having, then enters step S403, if
No, then step S404 is entered；
Judge whether current network has the mode of binding channel may is that poll reads each AP of AC management and control
This AP that scanning channel obtains all can the channel quality of working channel, the channel of each AP work at present is compiled
Number and the working channel of each neighbor AP, it is judged that whether the AP in AC administrative area detects this
AP and adjacent area AP uses the situation of binding channel；
Step S403: selecting the channel set of the 5.8GHz of acquiescence, the channel set of the 5.8GHz of this acquiescence is pre-
First setting, when this step completes, channel set selects flow process to terminate；
Step S404: judge whether that the AP using binding channel is what AC can control, if the most controlled,
Then enter step S407, if not the most controlled, then enter step S405；
Step S405: select to include the channel set of the binding channel used by uncontrolled WAP, enter
Step S406；
Step S406: selected by the channel set that goes out the most unique, if uniquely, then terminate the selection stream of channel set
Journey, i.e. determines this unique channel set, if not unique, then enters step S409；
Step S407: judge whether to release channel binding, thus discharge channel resource, if channel resource is limited,
Need to close this function, enter step S408, if conditions permit, it is not necessary to release channel binding, then enter step
Rapid S409；
Step S408: release channel binding, discharge channel resource, selects 5.8GHz channel set to be allocated；
Step S409: if in current network support IEEE802.11n WLAN WAP quantity with
The ratio of the total quantity of the WAP in current network exceedes default threshold value, i.e. with IEEE802.11n
WLAN is main, then select to include that two groups selected according to channel quality optimum adjacent channels are as binding
The channel set of channel, including one group selected；If current network is supported IEEE802.11n WLAN's
The ratio of the total quantity of the WAP in the quantity of WAP and current network is not less than default threshold
Value, then select to include one group of optimum adjacent channel selecting according to channel quality letter as binding channel
Road collection, including one group selected；Wherein, two include that selected one group refers to: in step S405
Situation, including the channel set of the binding channel used by uncontrolled AP, for select two groups optimum adjacent
Channel as the situation of binding channel, then only selects one group again, for selecting one group of optimum adjacent channel conduct
Binding channel, the most no longer selects.
It should be noted that above-mentioned channel set selects example to be to trigger as a example by channel set selects by AP to say
Bright, if initial channel collection selects, then the channel set that the 5.8GHz frequency range of general distribution acquiescence is corresponding, such as choosing
Select the channel set being made up of 149,153,157,161,165 channels.
According to the method for channel allocation of the invention described above, the present invention also provides for a kind of channel assigning system, below
Embodiment with regard to the channel assigning system of the present invention is described in detail.Fig. 5～Fig. 8 shows the present invention's
The structural representation of several embodiments of channel assigning system.For convenience of description, only show in Fig. 5～Fig. 8
Go out part related to the present invention.
Shown in Figure 5, for the structural representation of an embodiment of the channel assigning system of the present invention.As
Shown in Fig. 5, the channel assigning system in the present embodiment, select the distribution of module 501, channel set including channel set
Module 502, scanning result acquisition module 503, destination channel determine that module 504, destination channel distribute module
505, wherein:
Channel set selects module 501, for selecting the channel set corresponding with access controller；
Channel set distribution module 502, for distributing to the nothing of described access controller institute management and control by described channel set
Line access point；
Scanning result acquisition module 503, for entering the channel in described channel set by described WAP
Row scanning obtains scanning result；
Destination channel determines module 504, for determining destination channel according to described scanning result；
Destination channel distribution module 505, for distributing to described WAP by described destination channel.
Wherein in an embodiment, destination channel determines the letter that module 504 configures at described WAP
Road pattern is pressure channel tie-in mode, and when the channel of current distribution is concentrated with bundling channel, according to described
The optimal binding channel of communication quality in the channel set that scanning result will currently distribute is defined as destination channel；
Destination channel determines that module 504 is pressure channel tie-in mode at the channelling mode that described WAP configures,
And in the channel set of currently distribution during nothing binding channel, select module transmission Channel assignment to refer to described channel set
Order, described channel set selects module to reselect channel set according to this channel selection instruction.
Wherein in an embodiment, as shown in Figure 6, the channel assigning system of the present invention can also include more
New module 506, this more new module 506 is self adaptation letter for the channelling mode configured at described WAP
Road tie-in mode, and have to meet and carry out, with described destination channel, the binding condition that bundlees and meet communication quality and want
During the channel asked, by this satisfied binding condition and meet the channel of QoS requirement and tie with destination channel
Tie up, and update described destination channel with the binding channel obtained after binding.
Wherein in an embodiment, as it is shown in fig. 7, the channel assigning system of the present invention can also include thunder
Reaching signal detection module 507, this radar signal detection module 507 is described for searching according to described scanning result
Channel set is not detected by the channel of radar signal, determines alternative channel set according to the channel found, if institute
Stating the number of channel in alternative channel set is zero, then select module to send channel selection instruction to described channel set,
Correspondingly, channel set selects module 501 then can reselect channel set according to this channel selection instruction.
Wherein in an embodiment, as shown in Figure 8, channel set selects module 501 can include 2.4GHz
Band channels collection selects module 501A and/or 5.8GHz band channels collection to select module 501B, wherein:
2.4GHz band channels collection selects module 501A to include, and the first judging unit 5011, second judges
Unit the 5012, the 3rd judging unit the 5013, first channel set selects unit 5014, wherein:
Whether the first judging unit 5011 is to force channel bundle for judging the channelling mode of described WAP
Tie up pattern；
Second judging unit 5012 is for when the result of determination of the first judging unit 5011 is no, it is judged that current
Whether network has binding channel；
3rd judging unit 5013 is for when the result of determination of the second judging unit 5012 is no, it is judged that when
Interference source in front network is the most controlled,
Described first channel set selects unit for when the result of determination of the first judging unit 5011 is for being, selects
Select and include bundling channel and the channel set of interference minimum, be additionally operable to the result of determination at the second judging unit 5012
During for being and current network using the WAP bundling channel the most controlled, release in current network and use
The channel binding of the WAP of binding channel, or select the channel set that channel spacing is little, or select
Carry out the binding of primary channel after the primary channel that interference is minimum, then constituted channel by the primary channel after bundling
Collection, the result of determination at the second judging unit 5012 is to be and use binding the wireless of channel to connect in current network
Access point non-the most controlled time, select to include the channel set of the binding channel used by uncontrolled WAP, also
For when the result of determination of the 3rd judging unit 5013 is for being, for WAP corresponding to interference source again
Distribution channel, when the result of determination at the 3rd judging unit 5013 is no, selects to include interference source place channel
Channel set, and the channel in this channel set is selected the best adjacent channel of channel condition according to binding demand
Bundle；
5.8GHz band channels collection selects module 501B can include the 4th judging unit the 5015, the 5th judgement
Unit the 5016, the 6th judging unit 5017, second channel collection select unit 5018, wherein:
Whether the 4th judging unit 5015 is to force channel bundle for judging the channelling mode of described WAP
Tie up pattern；
5th judging unit 5016 is for when the result of determination of the 4th judging unit 5015 is no, it is judged that when
Whether front network has binding channel；
6th judging unit 5017 is for when the result of determination of the 4th judging unit 5015 is for being, it is judged that when
The WAP using binding channel in front network is the most controlled；
Described second channel collection select unit in the result of determination of the 4th judging unit 5015 for being and currently
Network is supported quantity and the wireless access in current network of the WAP of IEEE802.11n WLAN
When the ratio of total quantity of point exceedes default threshold value, select to include to select according to channel quality two groups are
Excellent adjacent channel as the channel set of binding channel, the result of determination of the 4th judging unit 5015 for being and
Current network is supported wireless with current network of the quantity of WAP of IEEE802.11n WLAN
When the ratio of the total quantity of access point is not less than default threshold value, select to include to select according to channel quality
One group of optimum adjacent channel, as the channel set of binding channel, is additionally operable to sentencing at the 5th judging unit 5016
Determining result when being no, select the channel set of the 5.8GHz of acquiescence, the channel set of the 5.8GHz of this acquiescence is pre-
The channel set first set, is additionally operable to when the result of determination of the 6th judging unit is no, and selection includes uncontrolled
The channel set of the binding channel used by WAP, and when the channel set selected is unique, complete letter
The selection of road collection, supports IEEE802.11n WLAN in and current network unique at the channel set selected
WAP quantity and current network in the ratio of total quantity of WAP exceed default threshold
During value, select to include two groups of optimum adjacent channels selecting according to channel quality letter as binding channel
Road collection, wherein, two groups of binding channels include the binding channel used by uncontrolled WAP, in choosing
The channel set selected out uniquely and does not supports the number of the WAP of IEEE802.11n WLAN in current network
Amount with the ratio of the total quantity of the WAP in current network not less than default threshold value time, select to include
The channel set of the binding channel used by uncontrolled WAP, is additionally operable at the 6th judging unit 5017
When result of determination is for being, it may be judged whether release channel binding, if releasing channel binding, then select acquiescence
The channel set of 5.8GHz, if not releasing channel binding, then supports IEEE802.11n WLAN in current network
WAP quantity and current network in the ratio of total quantity of WAP exceed default threshold
During value, select to include two groups of optimum adjacent channels selecting according to channel quality letter as binding channel
Road collection, supports quantity and the current network of the WAP of IEEE802.11n WLAN in current network
In the ratio of total quantity of WAP not less than default threshold value time, select to include according to channel quality
The adjacent channel of the one group of optimum selected is as the channel set of binding channel.
The channel assigning system of the present invention and the method for channel allocation one_to_one corresponding of the present invention, divide at above-mentioned channel
The technical characteristic of the embodiment elaboration of method of completing the square and beneficial effect thereof are all applicable to the embodiment of channel assigning system
In, hereby give notice that.
Embodiment described above only have expressed the several embodiments of the present invention, and it describes more concrete and detailed,
But therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that, for this area
Those of ordinary skill for, without departing from the inventive concept of the premise, it is also possible to make some deformation and
Improving, these broadly fall into protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be with appended
Claim is as the criterion.
Claims (8)
1. a method for channel allocation, it is characterised in that comprise the steps:
Select the channel set corresponding with access controller；
Described channel set is distributed to the WAP of described access controller institute management and control；
It is scanned obtaining scanning result to the channel in described channel set by described WAP；
Destination channel is determined according to described scanning result；
Described destination channel is distributed to described WAP；
Wherein, described determine that destination channel includes step according to described scanning result:
If the channelling mode of described WAP configuration is for forcing channel tie-in mode, and the letter of current distribution
Road is concentrated with bundling channel, then the communication quality in the channel set that will currently distribute according to described scanning result is
Good binding channel is defined as destination channel；
If the channelling mode of described WAP configuration is for forcing channel tie-in mode, and the letter of current distribution
Road is concentrated without binding channel, then reselect channel set.
Method for channel allocation the most according to claim 1, it is characterised in that sweeping described in described basis
Retouch result and determine that destination channel and described described destination channel being distributed to include step between described WAP
Rapid:
If the channelling mode of described WAP configuration is adaptive channel tie-in mode, and there is satisfied and institute
State the binding condition that destination channel carries out bundling and the channel meeting QoS requirement, then this is met binding
Condition and meet the channel of QoS requirement and bundle with destination channel, and with the binding obtained after binding
Channel updates described destination channel.
Method for channel allocation the most according to claim 1, it is characterised in that sweeping described in described basis
Retouch before result determines destination channel and further comprise the steps of:
The channel being not detected by radar signal in described channel set is searched, according to lookup according to described scanning result
To channel determine alternative channel set；
If the number of channel in described alternative channel set is zero, then reselect channel set.
Method for channel allocation the most according to claim 1, it is characterised in that:
The frequency range of the channel set that described access controller is corresponding is 2.4GHz frequency range；
The described selection channel set corresponding with access controller comprises the steps:
Whether the channelling mode judging described WAP is to force channel tie-in mode；
If forcing channel tie-in mode, then select to include bundling channel and the channel set of interference minimum；
If not forcing channel tie-in mode, then judge whether current network has binding channel；
If there being binding channel, then, when using the WAP bundling channel the most controlled in current network, solve
Except the channel binding of the WAP using binding channel in current network, or select channel spacing little
Channel set, or carry out the binding of primary channel after selecting the minimum primary channel of interference, then by bundling after
Primary channel constitutes channel set；
In current network use binding channel WAP non-the most controlled time, select include uncontrolled
The channel set of the binding channel used by WAP；
If not bundling channel, then judge that the interference source in current network is the most controlled；
If interference source is controlled, then redistribute channel for the WAP that interference source is corresponding；
If interference source is uncontrolled, then select to include the channel set of interference source place channel, and in this channel set
Channel select the best adjacent channel of channel condition to bundle according to binding demand.
Method for channel allocation the most according to claim 1, it is characterised in that:
The frequency range of the channel set that described access controller is corresponding is 5.8GHz frequency range；
The step of the channel set that described selection is corresponding with access controller comprises the steps:
Whether the channelling mode judging described WAP is to force channel tie-in mode；
If forcing channel tie-in mode, then in current network, support that IEEE802.11n WLAN's is wireless
When the ratio of the total quantity of the WAP in the quantity of access point and current network exceedes default threshold value,
Select to include two groups of optimum adjacent channels selecting according to channel quality channel set as binding channel,
Quantity and the nothing in current network of the WAP of IEEE802.11n WLAN is supported in current network
When the ratio of the total quantity of line access point is not less than default threshold value, select to include selecting according to channel quality
One group of optimum adjacent channel as the channel set of binding channel；
If not forcing channel tie-in mode, then judge whether current network has binding channel；
If current network does not bundle channel, then select the channel set of the 5.8GHz of acquiescence, this acquiescence
The channel set of 5.8GHz is channel set set in advance；
If current network has binding channel, then judge current network uses the WAP of binding channel
The most controlled；
If not the most controlled, then select to include the channel set of the binding channel used by uncontrolled WAP,
And when the channel set selected is unique, complete the selection of channel set, when the channel set selected is not unique,
If current network is supported quantity and the nothing in current network of the WAP of IEEE802.11n WLAN
The ratio of the total quantity of line access point exceedes default threshold value, then select to include to select according to channel quality
The adjacent channel of two groups of optimums is as the channel set of binding channel, and wherein, two groups of binding channels include non-being subject to
The binding channel used by WAP of control, if supporting the nothing of IEEE802.11n WLAN in current network
The ratio of the total quantity of the WAP in the quantity of line access point and current network is not less than default threshold
Value, selects to include the channel set of the binding channel used by uncontrolled WAP；
If the most controlled, then judging whether to release channel binding, if releasing channel binding, then selecting acquiescence
The channel set of 5.8GHz, if not releasing channel binding, then supports IEEE802.11n WLAN in current network
WAP quantity and current network in the ratio of total quantity of WAP exceed default threshold
During value, select to include two groups of optimum adjacent channels selecting according to channel quality letter as binding channel
Road collection, supports quantity and the current network of the WAP of IEEE802.11n WLAN in current network
In the ratio of total quantity of WAP not less than default threshold value time, select to include according to channel quality
The adjacent channel of the one group of optimum selected is as the channel set of binding channel.
6. a channel assigning system, it is characterised in that including:
Channel set selects module, for selecting the channel set corresponding with access controller；
Channel set distribution module, for distributing to the wireless of described access controller institute management and control by described channel set
Access point；
Scanning result acquisition module, for carrying out the channel in described channel set by described WAP
Scanning obtains scanning result；
Destination channel determines module, for determining destination channel according to described scanning result；
Destination channel distribution module, for distributing to described WAP by described destination channel；
Wherein, described destination channel determines that module is pressure letter at the channelling mode that described WAP configures
Road tie-in mode, and when the channel of current distribution is concentrated with bundling channel, will be current according to described scanning result
The optimal binding channel of communication quality in the channel set of distribution is defined as destination channel；
Described destination channel determines that module is pressure channel binding at the channelling mode that described WAP configures
Time in pattern, and the channel set of current distribution without binding channel, module is selected to send channel to described channel set
Selecting instruction, described channel set selects module to reselect channel set according to this channel selection instruction.
Channel assigning system the most according to claim 6, it is characterised in that:
Also including more new module, this more new module is certainly for the channelling mode configured at described WAP
Adaptive channel tie-in mode, and have and meet the binding condition carrying out bundling with described destination channel and satisfied communicate
During the channel of prescription, by this satisfied binding condition and the channel and the destination channel that meet QoS requirement
Bundle, and update described destination channel with the binding channel obtained after binding；
Or
Radar signal detection module, is not detected by thunder for searching in described channel set according to described scanning result
Reach the channel of signal, determine alternative channel set according to the channel found, if the letter in described alternative channel set
Number of channels is zero, then select module to send channel selection instruction to described channel set, and described channel set selects module
Channel set is reselected according to this channel selection instruction.
Channel assigning system the most according to claim 6, it is characterised in that described channel set selects mould
Block includes that 2.4GHz band channels collection selects module and/or 5.8GHz band channels collection to select module；
Described 2.4GHz band channels collection select module include the first judging unit, the second judging unit, the 3rd
Judging unit, the first channel set select unit, wherein:
Whether described first judging unit is to force channel bundle for judging the channelling mode of described WAP
Tie up pattern；
Described second judging unit is for when the result of determination of described first judging unit is no, it is judged that current
Whether network has binding channel；
Described 3rd judging unit is for when the result of determination of described second judging unit is no, it is judged that current
Interference source in network is the most controlled；
Described first channel set selects unit for when the result of determination of described first judging unit is for being, selects
Select and include bundling channel and the channel set of interference minimum, be additionally operable to the result of determination at described second judging unit
During for being and current network using the WAP bundling channel the most controlled, release in current network and use
The channel binding of the WAP of binding channel, or select the channel set that channel spacing is little, or select
Carry out the binding of primary channel after the primary channel that interference is minimum, then constituted channel by the primary channel after bundling
Collection, the result of determination at described second judging unit is to be and use binding the wireless of channel to connect in current network
Access point non-the most controlled time, select to include the channel set of the binding channel used by uncontrolled WAP, also
For when the result of determination of described 3rd judging unit is for being, for WAP corresponding to interference source again
Distribution channel, when the result of determination of described 3rd judging unit is no, selects to include interference source place channel
Channel set, and the channel in this channel set is selected the best adjacent channel of channel condition according to binding demand
Bundle；
Described 5.8GHz band channels collection select module include the 4th judging unit, the 5th judging unit, the 6th
Judging unit, second channel collection select unit, wherein:
Whether described 4th judging unit is to force channel bundle for judging the channelling mode of described WAP
Tie up pattern；
Described 5th judging unit is for when the result of determination of described 4th judging unit is no, it is judged that current
Whether network has binding channel；
Described 6th judging unit is for when the result of determination of described 4th judging unit is for being, it is judged that current
The WAP using binding channel in network is the most controlled；
Described second channel collection select unit in the result of determination of described 4th judging unit for being and currently
Network is supported quantity and the wireless access in current network of the WAP of IEEE802.11n WLAN
When the ratio of total quantity of point exceedes default threshold value, select to include to select according to channel quality two groups are
Excellent adjacent channel as the channel set of binding channel, the result of determination of described 4th judging unit for being and
Current network is supported wireless with current network of the quantity of WAP of IEEE802.11n WLAN
When the ratio of the total quantity of access point is not less than default threshold value, select to include to select according to channel quality
One group of optimum adjacent channel, as the channel set of binding channel, is additionally operable to the judgement at the 5th judging unit and ties
When fruit is no, selecting the channel set of the 5.8GHz of acquiescence, the channel set of the 5.8GHz of this acquiescence is to set in advance
Fixed channel set, is additionally operable to when the result of determination of the 6th judging unit is no, selects to include uncontrolled nothing
The channel set of the binding channel used by line access point, and when the channel set selected is unique, complete channel set
Selection, and current network unique at the channel set selected is supported the nothing of IEEE802.11n WLAN
The quantity of line access point exceedes default threshold value with the ratio of the total quantity of the WAP in current network
Time, select to include two groups of optimum adjacent channels selecting according to channel quality channel as binding channel
Collection, wherein, two groups of binding channels include the binding channel used by uncontrolled WAP, are selecting
The channel set gone out uniquely and does not supports the quantity of the WAP of IEEE802.11n WLAN in current network
During with the ratio of the total quantity of the WAP in current network not less than default threshold value, select to include non-
The channel set of the binding channel used by controlled WAP, is additionally operable to sentencing at described 6th judging unit
When determining result for being, it may be judged whether release channel binding, if releasing channel binding, then select the 5.8GHz of acquiescence
Channel set, if do not release channel binding, then in current network support IEEE802.11n WLAN nothing
The quantity of line access point exceedes default threshold value with the ratio of the total quantity of the WAP in current network
Time, select to include two groups of optimum adjacent channels selecting according to channel quality channel as binding channel
Collection, supports in quantity and the current network of the WAP of IEEE802.11n WLAN in current network
The ratio of total quantity of WAP not less than default threshold value time, select to include selecting according to channel quality
The adjacent channel of the one group of optimum taken out is as the channel set of binding channel.
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| WO2016004557A1 (en) * | 2014-06-17 | 2016-01-14 | 华为技术有限公司 | Information transmitting method, access point and station |
| CN105592526B (en) * | 2015-07-20 | 2019-06-04 | 新华三技术有限公司 | A kind of method and apparatus of scan channel |
| CN105592551B (en) * | 2015-08-10 | 2019-06-07 | 新华三技术有限公司 | A kind of method for channel allocation and device |
| CN106559891B (en) * | 2015-09-28 | 2020-06-23 | 中国移动通信集团公司 | Channel allocation method and device and access point |
| CN105307290B (en) * | 2015-09-30 | 2019-03-08 | 青岛海信移动通信技术股份有限公司 | A kind of configuration method and device of the trunk channel of mobile device |
| CN105554815A (en) * | 2015-12-08 | 2016-05-04 | 中国联合网络通信集团有限公司 | Channel distribution method and device |
| CN106912075B (en) * | 2017-02-15 | 2019-12-06 | 杭州迪普科技股份有限公司 | Channel allocation method and device |
| CN110392413B (en) * | 2019-07-31 | 2021-09-03 | 新华三技术有限公司成都分公司 | Channel scanning method and device |
| CN112911683A (en) * | 2019-12-04 | 2021-06-04 | 中兴通讯股份有限公司 | Distributed networking control method, distributed networking, electronic device and readable medium |
| CN113498135B (en) * | 2020-04-08 | 2024-03-08 | 杭州萤石软件有限公司 | Wireless channel synchronization system, method, device and storage medium |
| CN115996433B (en) * | 2023-03-22 | 2023-06-20 | 新华三技术有限公司 | Radio resource adjustment method, device, electronic equipment and storage medium |
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| US20100091731A1 (en) * | 2008-10-13 | 2010-04-15 | Samsung Electronics Co., Ltd. | Channel allocation method and apparatus for wireless communication networks |
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