CN106131909A - A kind of channel switching method and device - Google Patents
A kind of channel switching method and device Download PDFInfo
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- CN106131909A CN106131909A CN201610521781.8A CN201610521781A CN106131909A CN 106131909 A CN106131909 A CN 106131909A CN 201610521781 A CN201610521781 A CN 201610521781A CN 106131909 A CN106131909 A CN 106131909A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
Abstract
The embodiment of the invention discloses a kind of channel switching method and device, be applied to access controller, this access controller at least one channel group corresponding, each channel group includes a main channel and an auxiliary channel；The method includes: receiving the channel quality information that the access point AP that working channel is the first channel sends, wherein, described first channel is master tape width as the main channel of the first channel group belonging to described first channel, the bandwidth of operation of described AP；When determining that working condition that described first channel is unsatisfactory for presetting and the second channel as the described first auxiliary channel of channel group meet described default working condition according to described channel quality information, the working channel of described AP is switched to described second channel, and the bandwidth of operation of described AP is switched to auxiliary bandwidth, wherein, described auxiliary bandwidth is less than described master tape width.The application embodiment of the present invention, improves the utilization rate of channel.
Description
Technical field
The present invention relates to communication technical field, particularly to a kind of channel switching method and device.
Background technology
AP (Access Point, access point) in WLAN can be divided into both of which: FATAP (fat access point)
FITAP (thin access point).FATAP can singly complete the behaviors such as the access of wireless client, certification；FITAP needs and AC
(Access Controller, access controller) with the use of, complete the behaviors such as the access of wireless client, certification.At present,
Owing to the networking of AC+FITAP structure is compared to the networking of FATAP structure, there is management and safeguard that more convenient, safety is more
Height, and use the advantages such as the most flexible, the networking of AC+FITAP structure is widely used.
In the networking of AC+FITAP structure, AC can support that high-frequency AP works in the way of using channel bonding, false
If the bandwidth mode of present channel is 80MHz bandwidth, in regional, can be by the letter of 36,40,44,48 these 4 20MHz
Road binds together, by the channel bonding of 52,56,60,64 these 4 20MHz together, by 149,153,157 and 161 these 4
The channel bonding of 20MHz together, and then obtains the channel of 3 80MHz bandwidth.
When the working channel of AP exists interference, the working channel of this AP can be switched to the channel in other channel group,
Namely there is the switching between channel group, so by problem low for the utilization rate causing channel.
Summary of the invention
The embodiment of the invention discloses a kind of channel switching method and device, to improve the utilization rate of channel.
For reaching above-mentioned purpose, the embodiment of the invention discloses a kind of channel switching method, be applied to access controller AC,
Described AC at least one channel group corresponding, each channel group includes a main channel and an auxiliary channel；Described method includes:
Receive the channel quality information that the access point AP that working channel is the first channel sends, wherein, described first channel
As the main channel of the first channel group belonging to described first channel, the bandwidth of operation of described AP is master tape width；
When determining working condition that described first channel is unsatisfactory for presetting and as described according to described channel quality information
When the second channel of the first auxiliary channel of channel group meets described default working condition, the working channel of described AP is switched to institute
Stating second channel, and the bandwidth of operation of described AP switches to auxiliary bandwidth, wherein, described auxiliary bandwidth is less than described master tape width.
In one embodiment of the invention, the described working channel by described AP switches to described second channel, and
After the bandwidth of operation of described AP is switched to auxiliary bandwidth, described method also includes:
When determining that described first channel meets described default working condition according to described channel quality information, by described
Second channel is as the main channel of described first channel group, and the bandwidth of operation of described AP switches to described master tape width；
From described first channel group, obtain the groups of subchannels meeting described auxiliary bandwidth, and never comprise described second channel
Groups of subchannels in determine auxiliary channel.
In one embodiment of the invention, the described working channel by described AP switches to described second channel, and
After the bandwidth of operation of described AP is switched to auxiliary bandwidth, described method also includes:
Whether the bandwidth of operation judging described AP is described master tape width；
If it is, when described second channel be unsatisfactory for described default working condition and determined by auxiliary channel meet described
During the working condition preset, the working channel of described AP is switched to determined by auxiliary channel, and by the bandwidth of operation of described AP
Switch to described auxiliary bandwidth；
If it has not, when described second channel is unsatisfactory for described default working condition, the working channel of described AP is cut
It is changed in other channel group meet the 3rd channel of described default working condition, and the bandwidth of operation of described AP is switched to institute
Stating master tape width, wherein, described 3rd channel is as the main channel of other channel group described.
In one embodiment of the invention, send at the access point AP that described reception working channel is the first channel
After channel quality information, described method also includes:
When described first channel and described second channel are all unsatisfactory for described default working condition, by the work of described AP
Switch to the 3rd channel meeting described default working condition in other channel group as channel, wherein, described 3rd channel is made
Main channel for other channel group described.
In one embodiment of the invention, send at the access point AP that described reception working channel is the first channel
Before channel quality information, described method also includes:
Determine the main channel in each channel group；
The groups of subchannels meeting described auxiliary bandwidth is determined from described each channel group；
The groups of subchannels of main channel determined by never comprising determines auxiliary channel.
For reaching above-mentioned purpose, the embodiment of the invention also discloses a kind of channel switching device, be applied to access controller
AC, described AC at least one channel group corresponding, each channel group includes a main channel and an auxiliary channel；Described device bag
Include:
Receive unit, for receiving the channel quality information that the access point AP that working channel is the first channel sends, wherein,
Described first channel is master tape width as the main channel of the first channel group belonging to described first channel, the bandwidth of operation of described AP；
Switch unit, for when determining that described first channel is unsatisfactory for the work bar preset according to described channel quality information
When part and the second channel as the described first auxiliary channel of channel group meet described default working condition, by the work of described AP
Channel switches to described second channel, and the bandwidth of operation of described AP switches to auxiliary bandwidth, and wherein, described auxiliary bandwidth is less than institute
State master tape width.
In one embodiment of the invention, described switch unit, it is additionally operable to:
The working channel of described AP is switched to described second channel, and the bandwidth of operation of described AP is switched to auxiliary bandwidth
Afterwards, when determining that described first channel meets described default working condition according to described channel quality information, by described
Two channels are as the main channel of described first channel group, and the bandwidth of operation of described AP switches to described master tape width；From described
First channel group obtains the groups of subchannels meeting described auxiliary bandwidth, and never comprises in the groups of subchannels of described second channel true
Fixed auxiliary channel.
In one embodiment of the invention, described device also includes:
Judging unit, for switching to described second channel, and by the work strip of described AP by the working channel of described AP
After width switches to auxiliary bandwidth, it is judged that whether the bandwidth of operation of described AP is described master tape width；
Described switch unit, is additionally operable to:
In the case of described judging unit judged result is for being, when described second channel is unsatisfactory for described default work
Condition and determined by auxiliary channel when meeting described default working condition, the working channel of described AP is switched to determined by
Auxiliary channel, and the bandwidth of operation of described AP is switched to described auxiliary bandwidth；
In the case of described judging unit judged result is no, when described second channel is unsatisfactory for described default work
During condition, the working channel of described AP is switched in other channel group the 3rd channel meeting described default working condition,
And the bandwidth of operation of described AP is switched to described master tape width, wherein, described 3rd channel is as the master of other channel group described
Channel.
In one embodiment of the invention, receive, at described reception unit, the access point that working channel is the first channel
After the channel quality information that AP sends, described switch unit, it is additionally operable to:
When described first channel and described second channel are all unsatisfactory for described default working condition, by the work of described AP
Switch to the 3rd channel meeting described default working condition in other channel group as channel, wherein, described 3rd channel is made
Main channel for other channel group described.
In one embodiment of the invention, receive, at described reception unit, the access point that working channel is the first channel
Before the channel quality information that AP sends, described device also includes:
Determine unit, for determining the main channel in each channel group；Determine from described each channel group described in meeting
The groups of subchannels of auxiliary bandwidth；The groups of subchannels of main channel determined by never comprising determines auxiliary channel.
From the foregoing, it will be observed that in embodiments of the present invention, AC at least one channel group corresponding, each channel group includes a main letter
Road and an auxiliary channel, the working channel of AP is the first channel, then the first channel, as main channel, is carrying out channel switching
Time, first considering whether the auxiliary channel in channel group belonging to the first channel meets the working condition preset, if meeting, then reducing AP
Bandwidth of operation, the working channel of AP is switched to the auxiliary channel of channel group belonging to the first channel rather than the work of AP is believed
Road switches to the main channel of other channel group, and then improves the utilization rate improving channel.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to
Other accompanying drawing is obtained according to these accompanying drawings.
The schematic flow sheet of a kind of channel switching method that Fig. 1 provides for the embodiment of the present invention；
The schematic flow sheet of the another kind of channel switching method that Fig. 2 provides for the embodiment of the present invention；
The schematic flow sheet of the another kind of channel switching method that Fig. 3 provides for the embodiment of the present invention；
The structural representation of a kind of channel switching device that Fig. 4 provides for the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.Based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under not making creative work premise
Embodiment, broadly falls into the scope of protection of the invention.
Below by specific embodiment, the present invention is described in detail.
With reference to the schematic flow sheet of a kind of channel switching method that Fig. 1, Fig. 1 provide for the embodiment of the present invention, the method should
For AC, AC at least one channel group corresponding, each channel group includes a main channel and an auxiliary channel.
If the working channel of AP is the first channel, then the first channel is as channel group belonging to the first channel (the first channel group)
Main channel, when the first channel is unsatisfactory for the working condition preset, if the second channel as the first auxiliary channel of channel group is full
The working condition that foot is preset, can switch to second channel by the working channel of this AP；If second channel is unsatisfactory for the work preset
Make condition, then the working channel of this AP is switched in other channel group the 3rd channel meeting preset operating conditions, now, the
Three channels are as the main channel of other channel group.
In one embodiment of the invention, main channel and the auxiliary channel of each channel group manually can be set by user
Put, the main channel in each channel group and auxiliary channel be the most manually set, and the master tape width corresponding with main channel and with auxiliary channel
Corresponding auxiliary bandwidth.As: under 80MHz bandwidth mode, 3 channel group can be obtained at regional, be respectively as follows: 36,40,44,
48}, 52,56,60,64} and 149,153,157,161}, { as a example by 36,40,44,48} channel group, can manually arrange 36
Channel is main channel, and 44 channels or 48 channels are auxiliary channel.
In another embodiment of the invention, send at the access point AP that described reception working channel is the first channel
Channel quality information before, it is also possible to by the rule configured on AC, automatically select out the main channel in each channel group
With auxiliary channel.Wherein it is possible to prestore the master tape width for each channel group and auxiliary bandwidth, here, master tape width and main channel
Correspondence, auxiliary bandwidth is corresponding with auxiliary channel.When selecting the main channel of a channel group and auxiliary channel, can meet from this channel group
In the channel of the working condition preset, determine a channel T1As the main channel of this channel group, determine from this channel group
Meet the groups of subchannels of the auxiliary bandwidth of this channel group, never comprise channel T1Groups of subchannels in determine one meet preset work
Make the channel T of condition2, by this channel T2Auxiliary channel as this channel group.Because working as the working condition that main channel is unsatisfactory for presetting
Time, need from main channel, the working channel of AP is switched to auxiliary channel, main channel, auxiliary channel again in same channel group, in order to
Ensureing the normal work of AP, do not affected by main channel, the auxiliary bandwidth that auxiliary channel is corresponding is less than master tape width.
It addition, the working condition preset can be to can't detect radar signal in channel, now, determining a channel group
Main channel time, the arbitrary channel that can't detect radar signal can be defined as main channel；It addition, the working condition preset is also
Can be the channel quality of channel more than predetermined threshold value, the parameter weighing channel quality here includes: the bit error rate, interchannel interference
With re-transmission etc., specifically, the bit error rate is the biggest, and channel quality is the poorest；Interchannel interference is the strongest, and channel quality is the poorest；Number of retransmissions
The most, channel quality is the poorest.As a example by the bit error rate, a threshold bit error rate value can be set on AC, when the bit error rate of channel
During less than the threshold bit error rate value preset, it is believed that the channel quality of this channel is more than predetermined threshold value, can be confirmed as by this channel
Main channel.
It is assumed that under 80MHz bandwidth mode (for a width of 80MHz of master tape of each channel group main channel), preset for
The a width of 40MHz of auxiliary band of each channel group, { as a example by 36,40,44,48} channel group, to meet the son letter of 40MHz in this channel group
Road group have 36,40} and 44,48}, if 36 channels meet default working condition, then 36 channels can be defined as 36,40,
The main channel of 44,48} channel group, it addition, never comprise 36 channels 44,48} groups of subchannels determine auxiliary channel, if 44 letter
Road and 48 channels all meet the working condition preset, then 44 channels or 48 channels can be defined as { 36,40,44,48} channels
The auxiliary channel of group.
After determining main channel and auxiliary channel, performing the channel switching method that the embodiment of the present invention provides, the method includes:
S101: receiving the channel quality information that the AP that working channel is the first channel sends, wherein, the first channel is as the
The main channel of the first channel group belonging to one channel, the bandwidth of operation of this AP is master tape width；
S102: when determining working condition that the first channel is unsatisfactory for presetting and as first according to above-mentioned channel quality information
When the second channel of the auxiliary channel of channel group meets default working condition, the working channel of this AP is switched to second channel, and
The bandwidth of operation of this AP is switched to auxiliary bandwidth.
When carrying out channel switching, the channel quality information that AC reports based on AP judges, when meeting working condition,
Then AC does not processes, and AP continues to operate in current channel；When being unsatisfactory for working condition, then AC issues channel switching letter to AP
Breath, AP carries out channel switching based on this channel switching information.The content of channel switching information is similar with existing, repeats no more.
It is noted that WLAN protocol is supported backward compatible, even 80MHz bandwidth can be adjusted to 40MHz bandwidth.This
In the case of Zhong, according to this WLAN protocol, auxiliary bandwidth needs less than master tape width.
It is assumed that the first channel group is that { 36,40,44,48}, a width of 80MHz of master tape of this first channel group, auxiliary band is a width of
40MHz, the first channel (main channel) is 36 channels, and second channel (auxiliary channel) is 44 channels, AP1Working channel be 36 letters
Road, AP1Bandwidth of operation be 80MHz, after a period of time that worked, if 36 channels are unsatisfactory for the working condition preset, and
44 channels meet default working condition, then by AP1Working channel switch to 44 channels, and AP1Bandwidth of operation switch to
40MHz。
The available channel in this channel group (meeting the channel of the working condition preset) is paid the utmost attention to when switching channel,
Can reduce other channel group and the impact of this channel group using effect, improve Consumer's Experience.
In one embodiment of the invention, the working channel of this AP is switched to second channel, and by the work of this AP
After bandwidth switches to auxiliary bandwidth, AP works after a period of time, and the channel quality of the first channel may improve, and meets
The working condition preset.In this case, the another kind of channel switching side that Fig. 2, Fig. 2 provide is referred to for the embodiment of the present invention
The schematic flow sheet of method, the method includes:
S103: using second channel as the main channel of the first channel group, and the bandwidth of operation of AP is switched to master tape width；
Specifically, under AC, each AP of carry can send the channel quality of each information according to the first Preset Time to AC
Information, if in the second Preset Time, according to the channel quality information received, AC determines that the first channel meets default work
Make condition, then the bandwidth of operation of AP using second channel as the main channel of the first channel group, and can be switched to master tape width by AC.
This way it is ensured that AP can work under higher broadband, improve the work efficiency of AP, and need not again switch AP's
Working channel, further increases the work efficiency of AP.
S104: obtain the groups of subchannels meeting auxiliary bandwidth from the first channel group, and never comprise the son letter of second channel
Road group determines the auxiliary channel of the first channel group.
Using second channel as after main channel, the first channel will not be re-used as in main channel, and the first channel group not
There is auxiliary channel again, it is therefore desirable to redefine out the channel main channel as the first channel group, in order to second channel is not
In the case of meeting the working condition preset, channel can be switched in same channel group.Specifically, following two can be passed through
Mode determines auxiliary channel:
First channel, not in same groups of subchannels, directly can be defined as the first letter by A, the first channel and second channel
The auxiliary channel of road group；This situation is generally the main channel of each channel group that user is manually arranged and auxiliary channel；In S202
It is assumed that if the main channel that user manually arranges AP work is 36 channels (the first channels), auxiliary channel is 44 channels (second channels),
By AP1Working channel switch to 44 channels after, if AP1In 44 multi-channel operation a period of times, determine that 36 channels meet default
Working condition, then can using 44 channels as 36,40,44,48} channel group main channels, and using 36 channels as 36,40,44,
The auxiliary channel of 48} channel group, simultaneously by AP1Bandwidth of operation switch to 80MHz；
B, never comprise in the groups of subchannels of second channel, randomly choose a channel meeting the working condition preset and make
It it is the auxiliary channel of the first channel group；As in S202 it is assumed that { 36,40,44,48} channel group comprise { 36,40} and { 44,48} two
Subchannel, by AP1Working channel switch to 44 channels after, if AP1In 44 multi-channel operation a period of times, determine that 36 channels meet
The working condition preset, then can be using 44 channels as { 36,40,44,48} channel group main channels, never comprise 44 channels
{ 36, the 40} random channels meeting the working condition preset are as { the auxiliary letter of 36,40,44,48} channel group for groups of subchannels
Road, if 36 channels and 40 channels all meet the working condition preset, then can 36 channels and 40 channels be can serve as
{ the auxiliary channel of 36,40,44,48} channel group, if having selected 36 channels, using 36 channels as { 36,40,44,48} channel group
Auxiliary channel, then by simultaneously by AP1Bandwidth of operation switch to 80MHz.
In one embodiment of the invention, the working channel of AP is switched to second channel, and by the work strip of AP
After width switches to auxiliary bandwidth, AP works on.Now, AP works after a period of time, each channel in the first channel group
State all may have occurred change, improves such as the channel quality of the first channel and meets default working condition, or the second letter
The channel quality in road is deteriorated, and no longer meets the working condition etc. preset.In this case, embodiments provide separately
A kind of channel switching method, refers to Fig. 3, and the method includes:
S105: judge the bandwidth of operation whether master tape width of AP, if it is, perform S106, if it has not, perform S107；
S106: when second channel be unsatisfactory for the working condition preset and determined by auxiliary channel meet default working condition
Time, the working channel of AP is switched to determined by auxiliary channel, and the bandwidth of operation of AP is switched to auxiliary bandwidth；
Specifically, if AC detects that the bandwidth of operation of current AP is master tape width, then it is to be understood that the first channel is
Meeting the working condition preset, second channel has been defined as the main channel of the first channel group by AC, and according to second channel beyond
Channel determine the auxiliary channel of the first channel group, in this case, if second channel no longer meets the working condition preset
Determined by and, auxiliary channel meets default working condition, switches channel in same channel group, it is, the work of AP believed
Road switch to determined by auxiliary channel, and reduce bandwidth, the bandwidth of operation of AP switched to auxiliary bandwidth.
If according in S104 it is assumed that current AP1Bandwidth of operation be 80MHz, then may determine that AC by 44 channels make
For main channel, 36 channels are as auxiliary channel, in this case, if 44 channels are unsatisfactory for the working condition preset, and 36 channels
Meet default working condition, then can be by AP1Working channel switch to 36 channels, and AP1Bandwidth of operation switch to
40MHz。
S107: when second channel is unsatisfactory for the working condition preset, switches to other channel group by the working channel of AP
In meet the 3rd channel of working condition preset, and the bandwidth of operation of AP is switched to master tape width, wherein, the 3rd channel conduct
The main channel of other channel group above-mentioned.
Specifically, if AC detects that the bandwidth of operation of AP is auxiliary bandwidth, then it is to be understood that the first channel is still discontented with
The working condition that foot is preset, second channel is still as the auxiliary channel of the first channel group, if now second channel is unsatisfactory for presetting
Working condition, then need to switch to the working channel of AP the 3rd letter meeting the working condition preset in other channel group
Road, and the bandwidth of operation of AP is switched to master tape width, to ensure that AP can work under higher broadband, improve the work effect of AP
Rate.
If according in S102 it is assumed that current AP1Bandwidth of operation be 40MHz, then may determine that and still make when 36 channels
Being the main channel of the first channel group, 44 channels are as the auxiliary channel of the first channel group, in this case, if 44 channels are unsatisfactory for pre-
If working condition, then can illustrate that the first channel group is no longer appropriate for AP1Work, needs AP1Working channel switch to it
His channel group meets the 3rd channel of the working condition preset, as { 52 channels in 52,56,60,64} channel group meet pre-
If working condition, then can be by AP1Working channel switch to 52 channels, simultaneously by AP1Bandwidth of operation switch to
80MHz, here, 52 channel group are as { the main channel of 52,56,60,64} channel group.
It is noted that master tape width can be interpreted as initial bandwidth, when the working channel of AP is cut from a channel group
When changing to one other channel group, the bandwidth of operation of AP reverts to initial bandwidth parameter.
In one embodiment of the invention, send at the access point AP that described reception working channel is the first channel
After channel quality information, if when the first channel and second channel are all unsatisfactory for the working condition preset, can be directly by AP
Working channel switch to other channel group meet the 3rd channel of working condition preset, wherein, the 3rd channel is as upper
State the main channel of other channel group, to ensure the normal work of AP.
Applying each embodiment above-mentioned, AC at least one channel group corresponding, each channel group includes a main channel and
Individual auxiliary channel, the working channel of AP is the first channel, then the first channel is as main channel, when carrying out channel switching, first
Considering whether the auxiliary channel in channel group belonging to the first channel meets the working condition preset, if meeting, then reducing the work of AP
Bandwidth, switches to the working channel of AP the auxiliary channel of channel group belonging to the first channel rather than is switched by the working channel of AP
For the main channel of other channel group, and then improve the utilization rate improving channel.
The structural representation implementing, for the present invention, a kind of channel switching device provided with reference to Fig. 4, Fig. 4, is applied to AC, AC
At least one channel group corresponding, each channel group includes a main channel and an auxiliary channel；This device includes:
Receive unit 401, for receiving the channel quality information that the access point AP that working channel is the first channel sends, its
In, described first channel is master tape as the main channel of the first channel group belonging to described first channel, the bandwidth of operation of described AP
Wide；
Switch unit 402, for when determining that described first channel is unsatisfactory for the work preset according to described channel quality information
Make condition and time the second channel as the described first auxiliary channel of channel group meets described default working condition, by described AP's
Working channel switches to described second channel, and the bandwidth of operation of described AP switches to auxiliary bandwidth, and wherein, described auxiliary bandwidth is low
In described master tape width.
In one embodiment of the invention, switch unit 402, it is also possible to be used for:
The working channel of described AP is switched to described second channel, and the bandwidth of operation of described AP is switched to auxiliary bandwidth
Afterwards, when determining that described first channel meets described default working condition according to described channel quality information, by described
Two channels are as the main channel of described first channel group, and the bandwidth of operation of described AP switches to described master tape width；From described
First channel group obtains the groups of subchannels meeting described auxiliary bandwidth, and never comprises in the groups of subchannels of described second channel true
Fixed auxiliary channel.
In one embodiment of the invention, above-mentioned channel switching device can also include:
Judging unit (not shown in Fig. 4), for switching to described second channel, and by institute by the working channel of described AP
State after the bandwidth of operation of AP switches to auxiliary bandwidth, it is judged that whether the bandwidth of operation of described AP is described master tape width；
Switch unit 402, it is also possible to be used for:
In the case of described judging unit judged result is for being, when described second channel is unsatisfactory for described default work
Condition and determined by auxiliary channel when meeting described default working condition, the working channel of described AP is switched to determined by
Auxiliary channel, and the bandwidth of operation of described AP is switched to described auxiliary bandwidth；
In the case of described judging unit judged result is no, when described second channel is unsatisfactory for described default work
During condition, the working channel of described AP is switched in other channel group the 3rd channel meeting described default working condition,
And the bandwidth of operation of described AP is switched to described master tape width, wherein, described 3rd channel is as the master of other channel group described
Channel.
In one embodiment of the invention, receiving working channel at described reception unit 401 is connecing of the first channel
After the channel quality information that access point AP sends, switch unit 402, it is also possible to be used for:
When described first channel and described second channel are all unsatisfactory for described default working condition, by the work of described AP
Switch to the 3rd channel meeting described default working condition in other channel group as channel, wherein, described 3rd channel is made
Main channel for other channel group described.
In one embodiment of the invention, receiving working channel at described reception unit 401 is connecing of the first channel
Before the channel quality information that access point AP sends, above-mentioned channel switching device can also include:
Determine unit (not shown in Fig. 4), for determining the main channel in each channel group；From described each channel group
Determine the groups of subchannels meeting described auxiliary bandwidth；The groups of subchannels of main channel determined by never comprising determines auxiliary channel.
Applying each embodiment above-mentioned, AC at least one channel group corresponding, each channel group includes a main channel and
Individual auxiliary channel, the working channel of AP is the first channel, then the first channel is as main channel, when carrying out channel switching, first
Considering whether the auxiliary channel in channel group belonging to the first channel meets the working condition preset, if meeting, then reducing the work of AP
Bandwidth, switches to the working channel of AP the auxiliary channel of channel group belonging to the first channel rather than is switched by the working channel of AP
For the main channel of other channel group, and then improve the utilization rate improving channel.
For device embodiment, owing to it is substantially similar to embodiment of the method, so describe is fairly simple, relevant
Part sees the part of embodiment of the method and illustrates.
It should be noted that in this article, the relational terms of such as first and second or the like is used merely to a reality
Body or operation separate with another entity or operating space, and deposit between not necessarily requiring or imply these entities or operating
Relation or order in any this reality.And, term " includes ", " comprising " or its any other variant are intended to
Comprising of nonexcludability, so that include that the process of a series of key element, method, article or equipment not only include that those are wanted
Element, but also include other key elements being not expressly set out, or also include for this process, method, article or equipment
Intrinsic key element.In the case of there is no more restriction, statement " including ... " key element limited, it is not excluded that
Including process, method, article or the equipment of described key element there is also other identical element.
One of ordinary skill in the art will appreciate that all or part of step realizing in said method embodiment is can
Completing instructing relevant hardware by program, described program can be stored in computer read/write memory medium,
The storage medium obtained designated herein, such as: ROM/RAM, magnetic disc, CD etc..
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit protection scope of the present invention.All
Any modification, equivalent substitution and improvement etc. made within the spirit and principles in the present invention, are all contained in protection scope of the present invention
In.
Claims (10)
1. a channel switching method, is applied to access controller AC, it is characterised in that described AC at least one channel corresponding
Group, each channel group includes a main channel and an auxiliary channel；Described method includes:
Receive the channel quality information that the access point AP that working channel is the first channel sends, wherein, described first channel conduct
The main channel of the first channel group belonging to described first channel, the bandwidth of operation of described AP is master tape width；
When determining working condition that described first channel is unsatisfactory for presetting and as described first according to described channel quality information
When the second channel of the auxiliary channel of channel group meets described default working condition, the working channel of described AP is switched to described
Two channels, and the bandwidth of operation of described AP is switched to auxiliary bandwidth, wherein, described auxiliary bandwidth is less than described master tape width.
Method the most according to claim 1, it is characterised in that the described working channel by described AP switches to described second
Channel, and after the bandwidth of operation of described AP is switched to auxiliary bandwidth, described method also includes:
When determining that described first channel meets described default working condition according to described channel quality information, by described second
Channel is as the main channel of described first channel group, and the bandwidth of operation of described AP switches to described master tape width；
From described first channel group, obtain the groups of subchannels meeting described auxiliary bandwidth, and never comprise the son of described second channel
Channel group determines auxiliary channel.
Method the most according to claim 2, it is characterised in that the described working channel by described AP switches to described second
Channel, and after the bandwidth of operation of described AP is switched to auxiliary bandwidth, described method also includes:
Whether the bandwidth of operation judging described AP is described master tape width；
If it is, when described second channel be unsatisfactory for described default working condition and determined by auxiliary channel meet described preset
Working condition time, the working channel of described AP is switched to determined by auxiliary channel, and the bandwidth of operation of described AP is switched
For described auxiliary bandwidth；
If it has not, when described second channel is unsatisfactory for described default working condition, the working channel of described AP is switched to
Other channel group meet the 3rd channel of described default working condition, and the bandwidth of operation of described AP is switched to described master
Bandwidth, wherein, described 3rd channel is as the main channel of other channel group described.
Method the most according to claim 1, it is characterised in that at the access point that described reception working channel is the first channel
After the channel quality information that AP sends, described method also includes:
When described first channel and described second channel are all unsatisfactory for described default working condition, the work of described AP is believed
Road switches to the 3rd channel meeting described default working condition in other channel group, and wherein, described 3rd channel is as institute
State the main channel of other channel group.
Method the most according to claim 1, it is characterised in that at the access point that described reception working channel is the first channel
Before the channel quality information that AP sends, described method also includes:
Determine the main channel in each channel group；
The groups of subchannels meeting described auxiliary bandwidth is determined from described each channel group；
The groups of subchannels of main channel determined by never comprising determines auxiliary channel.
6. a channel switching device, is applied to access controller AC, it is characterised in that described AC at least one channel corresponding
Group, each channel group includes a main channel and an auxiliary channel；Described device includes:
Receive unit, for receiving the channel quality information that the access point AP that working channel is the first channel sends, wherein, described
First channel is master tape width as the main channel of the first channel group belonging to described first channel, the bandwidth of operation of described AP；
Switch unit, for when according to described channel quality information determine working condition that described first channel is unsatisfactory for presetting and
When meeting described default working condition as the second channel of the described first auxiliary channel of channel group, by the working channel of described AP
Switching to described second channel, and the bandwidth of operation of described AP switches to auxiliary bandwidth, wherein, described auxiliary bandwidth is less than described master
Bandwidth.
Device the most according to claim 6, it is characterised in that described switch unit, is additionally operable to:
The working channel of described AP is switched to described second channel, and the bandwidth of operation of described AP is switched to auxiliary bandwidth it
After, when determining that described first channel meets described default working condition according to described channel quality information, by described second
Channel is as the main channel of described first channel group, and the bandwidth of operation of described AP switches to described master tape width；From described
One channel group obtains and meets the groups of subchannels of described auxiliary bandwidth, and never comprise in the groups of subchannels of described second channel and determine
Auxiliary channel.
Device the most according to claim 7, it is characterised in that described device also includes:
Judging unit, for the working channel of described AP switches to described second channel, and cuts the bandwidth of operation of described AP
After being changed to auxiliary bandwidth, it is judged that whether the bandwidth of operation of described AP is described master tape width；
Described switch unit, is additionally operable to:
In the case of described judging unit judged result is for being, when described second channel is unsatisfactory for described default working condition
When auxiliary channel determined by and meets described default working condition, the working channel of described AP is switched to determined by auxiliary letter
Road, and the bandwidth of operation of described AP is switched to described auxiliary bandwidth；
In the case of described judging unit judged result is no, when described second channel is unsatisfactory for described default working condition
Time, the working channel of described AP is switched in other channel group the 3rd channel meeting described default working condition, and will
The bandwidth of operation of described AP switches to described master tape width, and wherein, described 3rd channel is as the main channel of other channel group described.
Device the most according to claim 6, it is characterised in that receiving working channel at described reception unit is the first channel
Access point AP send channel quality information after, described switch unit, be additionally operable to:
When described first channel and described second channel are all unsatisfactory for described default working condition, the work of described AP is believed
Road switches to the 3rd channel meeting described default working condition in other channel group, and wherein, described 3rd channel is as institute
State the main channel of other channel group.
Device the most according to claim 6, it is characterised in that receiving working channel at described reception unit is the first letter
Before the channel quality information that the access point AP in road sends, described device also includes:
Determine unit, for determining the main channel in each channel group；Determine from described each channel group and meet described auxiliary band
Wide groups of subchannels；The groups of subchannels of main channel determined by never comprising determines auxiliary channel.
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