CN102917428B - Channel switching method and device - Google Patents
Channel switching method and device Download PDFInfo
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- CN102917428B CN102917428B CN201110224711.3A CN201110224711A CN102917428B CN 102917428 B CN102917428 B CN 102917428B CN 201110224711 A CN201110224711 A CN 201110224711A CN 102917428 B CN102917428 B CN 102917428B
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Abstract
The invention discloses the channel switching method and device suitable for short-distance and medium-distance wireless communication system, it is possible to achieve the channel that different site STAs are carried out with differentiation switches, and STA can be switched to continuous or discrete destination channel.
Description
Technical field
The invention belongs to communication technical field, more particularly to channel switching method and device.
Background technology
It presently, there are a kind of short-distance and medium-distance wireless communication system of new definition, including central access point（CAP）And website
（STA）, STA and CAP maximum can be 20MHz, 40MHz or 80MHz.
CAP can take a channel or several continuous or discrete letters in 4 channels with a width of 20MHz
Road, after a STA accesses the CAP by networking flow, may reside within CAP occupancy channel in any one or
On any several continuous or discrete channels.
In certain situations it is desirable to allow STA to be switched to other channels from currently resident channel, but there is presently no for
The channel switching method of short-distance and medium-distance wireless communication system.
In some wireless communication systems of prior art, such as 802.11 systems and UHT systems, network side can take 2
The individual continuous channel with a width of 20MHz, one of them is main channel, and another is that can only be resided in from channel, 20MHz terminal
In main channel, 40MHz terminal then resides in main channel and from channel simultaneously.
The characteristics of based on existing wireless communications system, channel switching method of the prior art may be summarized to be following step
Suddenly：
Step 1：Network side determines main channel or is less than given threshold from the channel quality of channel.
Step 2：The terminal of all 20MHz in this lateral serving cell of network, which is sent, indicates that the channel of new main channel is cut
Notice is changed, the terminal of from all 40MHz to this serving cell, which is sent, indicates that new main channel and the channel switching from channel are led to
Know.
Step 3：Network side is switched to new main channel and from channel, and all terminals are according to the channel-switch-announcement received
Perform channel switching.
As can be seen that the channel switching in existing wireless communications system, only supports the channel switching under continuous frequency spectrum, and
Network side and all terminals must be integrally switched on new channel, and this is obviously not particularly suited for short-distance and medium-distance wireless communication system
In channel architecture and STA be resident the mode of channel, therefore channel switching method of the prior art can not be directly applied to
In the short-distance and medium-distance wireless communication system newly defined.
The content of the invention
In view of this, it is an object of the invention to provide the channel switching method suitable for short-distance and medium-distance wireless communication system and
Device.
In order to which some aspects of the embodiment to disclosure have a basic understanding, simple summary shown below is.Should
Summarized section is not extensive overview, nor to determine key/critical component or describe the protection domain of these embodiments.
Its sole purpose is that some concepts are presented with simple form, in this, as the preamble of following detailed description.
The technical proposal of the invention is realized in this way：A kind of channel switching method, this method include：
Central access point CAP determines that channel quality is less than the channel of given threshold in the current channel itself taken；
The STA that CAP will reside on the channel determined selects corresponding to each target STA one as target STA
Continuous or discrete destination channel above；
CAP sends the channel-switch-announcement for carrying destination channel instruction to each target STA, switches each target STA
To corresponding destination channel.
Optionally, in addition to：
CAP selects more than one continuous or discrete destination channel corresponding to itself, and is sent to each target STA
Destination channel corresponding to itself is switched to after channel-switch-announcement.
Optionally, in addition to：
CAP selection target system bandwidths, and change current system bandwidth when being switched to destination channel corresponding to itself.
Optionally, the goal systems bandwidth is also carried in the channel-switch-announcement, makes work of the target STA by itself
Bandwidth adjustment is in the goal systems bandwidth range.
Optionally, CAP is not further by addition to the STA on the channel determined is resided in and in the goal systems
STA in bandwidth range is as target STA.
Optionally, the measurement result that CAP is fed back by receiving all or part of STA in this serving cell, it is determined that described
Channel quality is less than the channel of given threshold.
Optionally, in addition to：CAP sends measurement request to all or part of STA in this serving cell.
Optionally, the situation that CAP is disturbed by parsing the current each channel itself taken by other wireless communication systems, really
The fixed channel quality is less than the channel of given threshold.
Optionally, CAP determines that the channel quality is less than by the loading condition of the current each channel itself taken of parsing
The channel of given threshold.
Optionally, the destination channel instruction includes：Originate the channel number and working channel map information of channel；The work
Make each bit in channel map information, a corresponding channel since the starting channel；When a bit
When setting value is filled in position, it is destination channel to indicate channel corresponding to the bit.
Optionally, the destination channel instruction includes：The centre frequency of each destination channel.
Optionally, the channel switching of data whether is transmitted during instruction channel switching is also carried in the channel-switch-announcement
Pattern, make target STA correct transceiving datas during channel switches；And/or in the channel-switch-announcement also carry instruction from
Channel-switch-announcement is received to the channel-switch count device for starting the duration between execution channel switching, makes target STA on time
Start to perform channel switching.
Optionally, when all STA in this serving cell are target STA and corresponding destination channel all same,
CAP broadcasts the channel-switch-announcement；
Destination channel corresponding to being target STA or each target STA as the part STA in this serving cell differs
When, CAP sends the channel-switch-announcement to each target STA unicasts respectively.
A kind of network side apparatus of channel switching, the device include：
Channel measurement unit, for determining that channel quality is less than the channel of given threshold in the current channel itself taken；
Handover decisions unit, the STA on channel determined for will reside in the channel measurement unit is as target
STA, and select more than one continuous or discrete destination channel corresponding to each target STA；
Notification unit, the channel-switch-announcement of destination channel instruction is carried for being sent to each target STA.
Optionally, the handover decisions unit, it is further used for selecting corresponding to itself more than one continuously or discontinuously
Destination channel；
Also include in the device：Switch unit, lead to for sending channel switching to each target STA in the notification unit
Destination channel corresponding to itself is switched to after knowing.
Optionally, also include in the device：System bandwidth adjustment unit, for selection target system bandwidth, and described
When switch unit is switched to destination channel corresponding to itself, change current system bandwidth.
Optionally, the system bandwidth adjustment unit, the goal systems bandwidth is further sent to the advice note
Member, for its carrying in channel-switch-announcement.
Optionally, the handover decisions unit, further by addition to the STA on the channel determined is resided in, work
Bandwidth not the STA in the goal systems bandwidth range as target STA.
Optionally, the channel measurement unit includes：
Measurement result receiving subelement, for receiving the measurement result of the feedbacks of all or part of STA in this serving cell；
First performs subelement, for according to the measurement result, it is determined that channel quality in the current channel itself taken
Less than the channel of given threshold.
Optionally, also include in the channel measurement unit：Measurement request subelement, for the institute in this serving cell
Have or part STA sends measurement request.
Optionally, the channel measurement unit includes：
First parsing subelement, the feelings disturbed for parsing the current each channel itself taken by other wireless communication systems
Condition；
Second performs subelement, for according to the described first analysis result for drawing of parsing subelement, it is determined that it is current itself
Channel quality is less than the channel of given threshold in the channel of occupancy.
Optionally, the channel measurement unit includes：
Second parsing subelement, for parsing the loading condition of the current each channel itself taken；
3rd performs subelement, for according to the described second analysis result for drawing of parsing subelement, it is determined that it is current itself
Channel quality is less than the channel of given threshold in the channel of occupancy.
Optionally, the notification unit includes：
First determination subelement, for determining the starting channel number of itself busy channel；
Subelement is generated, for generating working channel map information for each target STA, and according to STA pairs of the target
Setting value is filled in the destination channel answered, the corresponding bit position in working channel map information；
First notice performs subelement, and its working channel map information and starting are carried for being sent to each target STA
The channel-switch-announcement of channel number.
Optionally, the notification unit includes：
Second determination subelement, for determining the centre frequency of each destination channel corresponding to each target STA；
Second notice performs subelement, and each target operation channel corresponding to it is carried for being sent to each target STA
Centre frequency channel-switch-announcement.
Optionally, also include in the device：Channelling mode determining unit, for whether being passed during determining instruction channel switching
The channel mode of transmission of data, carried for the notification unit in the channel-switch-announcement；
And/or channel-switch count device determining unit, held for determining instruction since receiving channel-switch-announcement to
The channel-switch count device of duration between the switching of row channel, is carried in the channel-switch-announcement for the notification unit.
Optionally, all STAs of the notification unit in this serving cell are target STA and corresponding target is believed
During road all same, the channel-switch-announcement is broadcasted；Part STA in this serving cell is target STA or each target
When destination channel differs corresponding to STA, the channel-switch-announcement is sent to each target STA unicasts respectively.
A kind of end side device of channel switching, the device include：
Receiving unit, for receiving the channel-switch-announcement of CAP transmissions, instruction itself is carried in the channel-switch-announcement
The destination channel instruction of more than one corresponding continuous or discrete destination channel；
Switch unit, for according to the channel-switch-announcement, being switched to destination channel corresponding to itself.
Optionally, also include in the device：Bandwidth of operation adjustment unit, for being carried according in the channel-switch-announcement
Goal systems bandwidth, itself bandwidth of operation is adjusted in the goal systems bandwidth range.
Optionally, the receiving unit includes：
Receive and perform subelement, for receiving the channel-switch-announcement of CAP transmissions；
First parsing subelement, reflects for parsing the starting channel number carried in the channel-switch-announcement and working channel
Information is penetrated, determines to fill in the working channel map information and sets channel corresponding to the bit of value as mesh corresponding to itself
Mark channel.
Optionally, the receiving unit includes：
Receive and perform subelement, for receiving the channel-switch-announcement of CAP transmissions；
Second parsing subelement, for parsing each centre frequency carried in the channel-switch-announcement, determines each center
The channel of frequency instruction destination channel corresponding to itself.
Optionally, the receiving unit includes：
Receive and perform subelement, for receiving the channel-switch-announcement of CAP transmissions；
3rd parsing subelement, for whether being passed during parsing the instruction channel carried in the channel-switch-announcement switching
The channel mode of transmission of data, analysis result is supplied to the data transmission device of end side；And/or the parsing channel is cut
The instruction that carries in notice is changed since the channel for receiving channel-switch-announcement to and performing the duration channel switching to switch
Counter, analysis result is supplied to the switch unit.
A kind of method for channel switching, this method include：
Generation carries the channel-switch-announcement of destination channel instruction, and the destination channel indicates to be used to indicate more than one company
Continuous or discontinuous destination channel, makes the receiving terminal of reception channel-switch-announcement be switched to the destination channel；
Send the channel-switch-announcement.
Optionally, goal systems bandwidth is also carried in the channel-switch-announcement, makes the reception of reception channel-switch-announcement
The bandwidth of operation of itself is adjusted in the goal systems bandwidth range by end.
Optionally, the channel switching of data whether is transmitted during instruction channel switching is also carried in the channel-switch-announcement
Pattern, make the receiving terminal of the reception channel-switch-announcement correct transceiving data during channel switches；And/or the channel switching
Instruction is also carried in notice to count since the channel switching for receiving channel-switch-announcement to and performing the duration channel switching
Number device, the receiving terminal of reception channel-switch-announcement is set to start to perform channel switching on time.
Optionally, the channel-switch-announcement is encapsulated in channel-switch-announcement frame and realized.
For above-mentioned and related purpose, one or more embodiments include will be explained in below and in claim
In the feature that particularly points out.Following explanation and accompanying drawing describe some illustrative aspects in detail, and its instruction is only
Some modes in the utilizable various modes of principle of each embodiment.Other benefits and novel features will be under
The detailed description in face is considered in conjunction with the accompanying and becomes obvious, the disclosed embodiments be will include all these aspects and they
Be equal.
Figure of description
Fig. 1 is the flow chart of channel switching method in the present invention；
Fig. 2 is the flow chart of channel switching method in the embodiment of the present invention one；
Fig. 3 is the schematic diagram that channel switching is front and rear in the embodiment of the present invention two；
Fig. 4 is the schematic diagram that channel switching is front and rear in the embodiment of the present invention three；
Fig. 5 is the schematic diagram that channel switching is front and rear in the embodiment of the present invention four；
Fig. 6 is the schematic diagram that channel switching is front and rear in the embodiment of the present invention five；
Fig. 7 is the schematic diagram that channel switching is front and rear in the embodiment of the present invention six；
Fig. 8 is the structural representation of the network side apparatus that channel switches in the present invention；
Fig. 9 is the structural representation of the network side apparatus that channel switches in embodiment seven in the present invention；
Figure 10 is the structural representation of the end side device that channel switches in the present invention；
Figure 11 is the structural representation of the end side device that channel switches in the embodiment of the present invention 14.
Embodiment
The following description and drawings fully show specific embodiments of the present invention, to enable those skilled in the art to
Put into practice them.Other embodiments can include structure, logic, it is electric, process and other change.Embodiment
Only represent possible change.Unless explicitly requested, otherwise single component and function are optional, and the order operated can be with
Change.The part of some embodiments and feature can be included in or replace part and the feature of other embodiments.This hair
The scope of bright embodiment includes the gamut of claims, and claims is all obtainable equivalent
Thing.Herein, these embodiments of the invention can individually or generally be represented that this is only with term " invention "
For convenience, and if in fact disclosing the invention more than one, the scope for being not meant to automatically limit the application is to appoint
What single invention or inventive concept.
Fig. 1 is the flow chart of the channel switching method in the present invention, and the flow includes：
Step 11：CAP determines that channel quality is less than the channel of given threshold in the current channel itself taken.
In this step, it is determined that criterion can have a many kinds, such as can be determined according to the degree being currently interfered, or
Person can also determine according to the situation of present load.
Step 12：The STA that CAP will reside on the channel determined selects each STA pairs of target as target STA
More than one the continuous or discrete destination channel answered.
Step 13：CAP sends the channel-switch-announcement for carrying destination channel instruction to each target STA, makes each target
STA is switched to corresponding destination channel.
It can be seen that the mode of channel, this hair are resident for the channel architecture feature in short-distance and medium-distance wireless communication system and STA
Channel switching method in bright, which realizes, to carry out the channel of differentiation to different STA and switches, at the same realize STA be switched to it is continuous or
Discontinuous destination channel.
Further, on the basis of flow shown in Fig. 1, CAP can also carry out channel switching, mainly include：CAP selections are certainly
More than one continuous or discrete destination channel corresponding to body, and cut after channel-switch-announcement is sent to each target STA
Change to destination channel corresponding to itself.
Further, CAP is on the basis of own channel switching is performed, it is also an option that goal systems bandwidth, and switching
Change current system bandwidth during to itself corresponding destination channel.On this basis, will determine except residing in step 11
Outside STA on channel and other STA of bandwidth of operation not in goal systems bandwidth range also serve as target STA and perform mesh
Mark Channel assignment, send the operation such as channel-switch-announcement, while in order that the bandwidth of operation of oneself is adjusted to by target STA in time
In goal systems bandwidth range, goal systems bandwidth is further carried in channel-switch-announcement.
Some alternative embodiments of the inventive method are given below.
Embodiment one
In the present embodiment, so that CAP and STA carries out channel switching and CAP changes current system bandwidth as an example.
Fig. 2 is the flow chart of the channel switching method in the embodiment of the present invention one, and the flow includes：
Step 21：Channel measurement.
In this step, the purpose of channel measurement is to determine out in the current busy channels of CAP that channel quality is less than given threshold
Channel.
Channel measurement includes following three kinds of modes：Firstth, CAP sends to all or part of STA in this serving cell and surveyed
Amount request, the measurement result that CAP feeds back by receiving these STA, determine that channel quality is less than the channel of given threshold；Here,
STA can perceive other wireless communication systems when measuring, and such as 802.11 systems, Wimax systems or UHT systems are sent
Physical frame and mac frame；
Secondth, CAP is by parsing other wireless communication systems, and such as 802.11 systems, Wimax systems or UHT systems are sent
Physical frame and mac frame, the situation that the current each channel itself taken of parsing is disturbed, so that it is determined that channel quality is less than setting
The channel of threshold value；
3rd, CAP is current by the information such as resident STA quantity on each channel of the stage of networking acquisition, parsing
The load for each channel that itself takes, so that it is determined that channel quality is less than the channel of given threshold.
In above-mentioned three kinds of modes, the specific algorithm used in channel measurement uses conventional algorithm, repeats no more here.
Step 22：CAP switches over decision-making.
In this step, handover decisions include following two aspects：
First, CAP selection targets system bandwidth.
2nd, CAP selection targets STA and for each target STA selection corresponding to destination channel.
CAP will reside in the STA on the channel determined in step 21 and not other in goal systems bandwidth range
STA, as target STA.
CAP selects more than one continuous or discrete destination channel corresponding to itself, then CAP again select from
In destination channel corresponding to body, for more than one continuous or discrete destination channel corresponding to each target STA selections.
Step 23：CAP sends channel-switch-announcement to each target STA.
Channel-switch-announcement in this step, the following two kinds information can be carried：Firstth, destination channel indicates.
Destination channel instruction has the following two kinds implementation：
1）Starting channel number and the working channel mapping for the channel that CAP takes, each bit in working channel mapping
A corresponding channel since the starting channel number, when filling in setting value in a bit, indicate the bit
Corresponding channel is destination channel.By taking 4 channels of 2.4G frequency ranges as an example, channel number is respectively 1,5,9 and 13, centre frequency point
Wei not 2412MHz, 2432MHz, 2452MHz and 2472MHz.When the starting channel number carried in channel-switch-announcement be 1, work
When channel map information value is 0100, represent that frequency is 2432MHz channel 5 centered on destination channel corresponding to STA.Due to
The channel number for using the international wireless electricity committee to specify in this mode, just can unique mark one using less byte number
Individual channel, save resource and realize easy.
2）The centre frequency of each destination channel.Still by taking 4 channels of 2.4G frequency ranges as an example, when being taken in channel-switch-announcement
When the centre frequency of band is 2432MHz, represent the STA destination channels to be switched centered on frequency be 2432MHz channel 5.
Secondth, goal systems bandwidth.
Such as hypothesis current system bandwidth and STA bandwidth of operation are 40MHz, when system bandwidth changes into 20MHz,
By carrying instruction 20MHz goal systems bandwidth in channel-switch-announcement, STA can be indicated the bandwidth of operation of itself
It is adjusted to 20MHz.
In this step, if all STA in this serving cell are equal for destination channel corresponding to target STA and they
Identical, CAP can send channel-switch-announcement by way of broadcast.
If the part STA in this serving cell is that target operation channel corresponding to target STA or target STA is different,
CAP can be directed to each target STA, send channel-switch-announcement by way of unicast respectively.
Channel-switch-announcement in this step, it can be encapsulated in channel-switch-announcement frame and realize, in channel-switch-announcement
Comprising each information, a corresponding field in channel-switch-announcement frame, when filling in setting value in field, can refer to
Show whether the field carries corresponding informance, the content such as duration of the field.
Step 24：Perform channel switching.
In this step, CAP will be switched to destination channel corresponding to itself, and target STA is according to the instruction of channel-switch-announcement
It is switched to corresponding destination channel.
Channel switching can also be carried except in the case of above in relation to described by flow shown in Fig. 2, in channel-switch-announcement
Data, channel switching whether are transmitted during the instruction channel switching of pattern and/or channel-switch count device, wherein channel mode
Counter instruction receives channel-switch-announcement to the duration started between execution channel switching.Channel mode and channel are cut
Change the operation that counter is used to constrain STA, it is assumed for example that channel mode instruction can transmit number during channel switches
According to, then the channel and CAP interaction datas that STA can be before the handover during channel switches, while STA is according to channel-switch count
The instruction of device, channel switchover operation can be started on time.
Embodiment two
Fig. 3 is the front and rear schematic diagram of the channel switching in the embodiment of the present invention two, and wherein dash area is that CAP or STA is accounted for
Channel.
Before channel switching, all STA in CAP and this serving cell are operated in 2.4G frequency ranges, and system bandwidth
Bandwidth of operation with all STA is all 20MHz.CAP busy channels 1, all STA are resident on channel 1.
The channel that itself takes is switched to channel 5 by CAP decision-makings, and system bandwidth keeps constant, and by this serving cell
All STA all as destination channel corresponding to target STA and each target STA be channel 5.
CAP sends channel-switch-announcement by way of broadcast to all STA in this serving cell, and channel switching is logical
Know that middle starting channel number 5 and the value of carrying for 1000 working channel map information, that is, indicates all STA in this serving cell
It is switched to channel 5.
After performing channel switching, CAP busy channels 5, all STA of this serving cell are resided on channel 5, system bandwidth
Keep constant with all STA bandwidth of operation.
Embodiment three
Fig. 4 is the front and rear schematic diagram of the channel switching in the embodiment of the present invention three, and wherein dash area is that CAP or STA is accounted for
Channel.
Before channel switching, all STA in CAP and this serving cell are operated in 2.4G frequency ranges, and system bandwidth
Bandwidth of operation with all STA is all 40MHz.CAP busy channels 1 and channel 5, all STA are resided on channel 1 and channel 5.
The channel that itself takes is switched to channel 1 by CAP decision-makings, and system bandwidth changes into 20MHz, and this service is small
It is channel 1 that all STA in area, which are used as destination channel corresponding to target STA and each target STA,.
CAP sends channel-switch-announcement by way of broadcast to all STA in this serving cell, and channel switching is logical
Know that middle starting channel number 1 and the value of carrying for 1000 working channel map information, that is, indicates all STA in this serving cell
It is switched to channel 1.Goal systems bandwidth is also carried in the channel-switch-announcement of CAP broadcast, instruction system bandwidth will be changed to
20MHz。
After performing channel switching, CAP busy channels 1, all STA of this serving cell are resident on channel 1, system bandwidth
20MHz is changed into all STA of this serving cell bandwidth of operation.
Example IV
Fig. 5 is the front and rear schematic diagram of the channel switching in the embodiment of the present invention four, and wherein dash area is that CAP or STA is accounted for
Channel.
Before channel switching, all STA in CAP and this serving cell are operated in 2.4G frequency ranges, and system bandwidth
Bandwidth of operation for 40MHz, STA1 is that 20MHz, STA2 bandwidth of operation are 20MHz.CAP busy channels 1 and channel 5, STA1
It is resident on channel 1, STA2 is resided on channel 5.
Assuming that channel 1 and channel 5 are disturbed by other systems, CAP decision-makings itself are switched to channel 9 and channel 13, are
Regiment commander is wide constant, and using STA1 and STA2 as destination channel corresponding to target STA and STA1 is channel 9, mesh corresponding to STA2
Mark channel is channel 13.
CAP sends channel-switch-announcement to STA1 and STA2 respectively by way of unicast, wherein being sent to STA1 letter
Starting channel number 9 and value are carried in road switching notice as 1000 working channel map information, the channel for being sent to STA2 is cut
Change in notice and carry starting channel number 9 and value as 0100 working channel map information.
After performing channel switching, CAP busy channels 9 and channel 13, STA1 are resided on channel 9, and STA2 resides in channel
On 13.System bandwidth and STA1 and STA2 bandwidth of operation keep constant.
Embodiment five
Fig. 6 is the front and rear schematic diagram of the channel switching in the embodiment of the present invention five, and wherein dash area is that CAP or STA is accounted for
Channel.
Before channel switching, all STA in CAP and this serving cell are operated in 5G frequency ranges, and system bandwidth is
80MHz, STA1 bandwidth of operation are 40MHz, and STA2 bandwidth of operation is 20MHz.CAP busy channels 149, channel 153, channel
161 and channel 165, STA1 reside on channel 149 and channel 153, STA2 is resided on channel 153.
Assuming that channel 149 and channel 153 are disturbed by other systems, CAP decision-makings itself do not perform channel switching, not changed
Become system bandwidth, and using STA1 and STA2 as target STA, and destination channel corresponding to STA1 is channel 161 and channel 165,
Destination channel corresponding to STA2 is channel 161.
CAP sends channel-switch-announcement to STA1 and STA2 respectively by way of unicast, wherein being sent to STA1 letter
Starting channel number 149 and value are carried in road switching notice as 0011 working channel map information, is sent to STA2 channel
Starting channel number 149 and value are carried in switching notice as 0001 working channel map information.
After performing channel switching, STA1 is resided on channel 161 and channel 165, and STA2 is resided on channel 165.System
Bandwidth and STA1 and STA2 bandwidth of operation keep constant.
Embodiment six
Fig. 7 is the front and rear schematic diagram of the channel switching in the embodiment of the present invention six, and wherein dash area is that CAP or STA is accounted for
Channel.
Before channel switching, all STA in CAP and this serving cell are operated in 5G frequency ranges, and system bandwidth is
80MHz, STA1 bandwidth of operation are 80MHz, and STA2 bandwidth of operation is 40MHz.CAP busy channels 149, channel 153, channel
161 and channel 165, STA1 reside on channel 149, channel 153, channel 161 and channel 165, STA2 resides in the He of channel 149
On channel 153.
Assuming that channel 153 is disturbed by other systems, CAP determines temporarily discontinuous without using the channel, i.e. CAP selections
Channel 149, channel 161 and channel 165 as destination channel corresponding to itself, do not change system bandwidth, and by STA1 and
STA2 is as target STA, and destination channel corresponding to STA1 is channel 149, channel 161 and channel 165, target corresponding to STA2
Channel is channel 161 and channel 165.
CAP sends channel-switch-announcement to STA1 and STA2 unicasts respectively, wherein being sent to STA1 channel-switch-announcement
The middle working channel map information that will carry starting channel number 149 and value is 1011, it is sent to STA2 channel-switch-announcement
The middle working channel map information that will carry starting channel number 149 and value is 0011.
After performing channel switching, STA1 is resided on channel 149, channel 161 and channel 165, and STA2 resides in channel 161
On channel 165.System bandwidth and STA1 and STA2 bandwidth of operation keep constant.
Fig. 8 is the structural representation of the network side apparatus that channel switches in the present invention, and the device includes：Channel measurement unit
81st, handover decisions unit 82 all with notification unit 83.
The channel measurement unit 81, for determining that channel quality is less than given threshold in the current channel itself taken
Channel.
The handover decisions unit 82, the STA on channel determined for will reside in the channel measurement unit 81
As target STA, and select more than one continuous or discrete destination channel corresponding to each target STA.
The notification unit 83, the channel-switch-announcement of destination channel instruction is carried for being sent to each target STA.
The notification unit 83 can be in this serving cell all STA be all target STA and corresponding destination channel
During all same, the channel-switch-announcement is broadcasted；Part STA in this serving cell is target STA or each target
When destination channel differs corresponding to STA, the channel-switch-announcement is sent to each target STA unicasts respectively.
Several alternative embodiments of the network side apparatus that channel switches in the present invention are given below.
Embodiment seven
In the present embodiment seven, so that CAP and STA carries out channel switching and CAP changes current system bandwidth as an example.
Fig. 9 is the structural representation of the network side apparatus that channel switches in the embodiment of the present invention seven, and the device includes：Channel
Measuring unit 91, handover decisions unit 92, notification unit 93, system bandwidth adjustment unit 94 and switch unit 95.
The channel measurement unit 91, for determining that channel quality is less than given threshold in the current channel itself taken
Channel.
The handover decisions unit 92, the STA on channel determined for will reside in the channel measurement unit 91,
And in addition to the STA on the channel that the channel measurement unit 91 determines is resided in, bandwidth of operation is in goal systems bandwidth
In the range of STA as target STA；Select more than one continuous or discrete destination channel corresponding to itself；Selection is each
More than one continuous or discrete destination channel corresponding to target STA.
The notification unit 93, destination channel instruction and goal systems bandwidth are carried for being sent to each target STA
Channel-switch-announcement.
All STAs of the notification unit 93 in this serving cell are target STA and corresponding destination channel is homogeneous
Meanwhile broadcast the channel-switch-announcement；Part STA in this serving cell is STA pairs of target STA or each target
When the destination channel answered differs, the channel-switch-announcement is sent to each target STA unicasts respectively.
The system bandwidth adjustment unit 94, it is switched to for selection target system bandwidth, and in the switch unit 95
Corresponding to itself during destination channel, change current system bandwidth；Goal systems bandwidth is sent to the notification unit 93.
The switch unit 95, for being cut after the notification unit 93 sends channel-switch-announcement to each target STA
Change to destination channel corresponding to itself.
Embodiment eight
It can include in notification unit 83 shown in Fig. 8, or notification unit 93 shown in Fig. 9：First determination subelement,
Generate subelement and the first notice performs subelement.
First determination subelement, for determining the starting channel number of itself busy channel.
The generation subelement, for generating working channel map information for each target STA, and according to the target
Setting value is filled in destination channel corresponding to STA, the corresponding bit position in working channel map information.
It is described first notice perform subelement, for each target STA send carry its working channel map information and
Originate the channel-switch-announcement of channel number.
It is all target STA and corresponding target that first notice, which performs all STAs of the subelement in this serving cell,
During channel all same, the channel-switch-announcement is broadcasted；Part STA in this serving cell is target STA or each mesh
When destination channel corresponding to mark STA differs, the channel-switch-announcement is sent to each target STA unicasts respectively.
Embodiment nine
It can include in notification unit 83 shown in Fig. 8, or notification unit 93 shown in Fig. 9：Second determination subelement
Subelement is performed with the second notice.
Second determination subelement, for determining the centre frequency of each destination channel corresponding to each target STA.
Second notice performs subelement, and each target operation corresponding to it is carried for being sent to each target STA
The channel-switch-announcement of the centre frequency of channel.
It is all target STA and corresponding target that second notice, which performs all STAs of the subelement in this serving cell,
During channel all same, the channel-switch-announcement is broadcasted；Part STA in this serving cell is target STA or each mesh
When destination channel corresponding to mark STA differs, the channel-switch-announcement is sent to each target STA unicasts respectively.
Embodiment ten
Based on the apparatus structure shown in Fig. 8 or Fig. 9, channelling mode determining unit and/or letter can also be included in the device
Road switching counter determining unit.
The channelling mode determining unit, the channel for whether transmitting data during determining instruction channel switching switch mould
Formula, to carry in the channel-switch-announcement.
The channel-switch count device determining unit, performed for determining instruction since receiving channel-switch-announcement to
The channel-switch count device of duration between channel switching, to carry in the channel-switch-announcement.
Embodiment 11
It can include in channel measurement unit 81 shown in Fig. 8, or channel measurement unit 91 shown in Fig. 9：Survey
Measure result receiving subelement and first and perform subelement.
The measurement result receiving subelement, for receiving the measurement of the feedbacks of all or part of STA in this serving cell
As a result.
Described first performs subelement, for according to the measurement result, it is determined that channel in the current channel itself taken
Quality is less than the channel of given threshold.
Further, may be used also in the channel measurement unit 81 shown in Fig. 8, or channel measurement unit 91 shown in Fig. 9
With including：Measurement request subelement, for sending measurement request to all or part of STA in this serving cell.
Embodiment 12
It can include in channel measurement unit 81 shown in Fig. 8, or channel measurement unit 91 shown in Fig. 9：The
One parsing subelement and second performs subelement.
The first parsing subelement, disturbed for parsing the current each channel itself taken by other wireless communication systems
Situation.
Described second performs subelement, for the analysis result drawn according to the described first parsing subelement, it is determined that currently
Channel quality is less than the channel of given threshold in the channel that itself takes.
Embodiment 13
It can include in channel measurement unit 81 shown in Fig. 8, or channel measurement unit 91 shown in Fig. 9：The
Two parsing subelements and the 3rd perform subelement.
The second parsing subelement, for parsing the loading condition of the current each channel itself taken.
Described 3rd performs subelement, for the analysis result drawn according to the described second parsing subelement, it is determined that currently
Channel quality is less than the channel of given threshold in the channel that itself takes.
Figure 10 is the structural representation of the end side device that channel switches in the present invention, and the device includes：Receiving unit 101
With switch unit 102.
The receiving unit 101, for receiving the channel-switch-announcement of CAP transmissions, carried in the channel-switch-announcement
Indicate the destination channel instruction of more than one continuous or discrete destination channel corresponding to itself.
The switch unit 102, for according to the channel-switch-announcement, being switched to destination channel corresponding to itself.
Several alternative embodiments of the end side device that channel switches in the present invention are given below.
Embodiment 14
Figure 11 is the structural representation of the end side device that channel switches in the embodiment of the present invention 14, and the device includes：
Receiving unit 111, switch unit 112 and bandwidth of operation adjustment unit 113.
The receiving unit 111, for receiving the channel-switch-announcement of CAP transmissions, carried in the channel-switch-announcement
Goal systems bandwidth and the destination channel instruction for indicating more than one continuous or discrete destination channel corresponding to itself.
The switch unit 112, for according to the channel-switch-announcement, being switched to destination channel corresponding to itself.
The bandwidth of operation adjustment unit 113, for according to the goal systems bandwidth carried in the channel-switch-announcement,
Itself bandwidth of operation is adjusted in the goal systems bandwidth range.
Embodiment 15
In the receiving unit 111 shown in receiving unit 101 and Figure 11 shown in Figure 10, it can include：Receive and perform
Subelement and the first parsing subelement.
Described receive performs subelement, for receiving the channel-switch-announcement of CAP transmissions.
The first parsing subelement, for parsing the starting channel number carried in the channel-switch-announcement and work letter
Road map information, determines to fill in that to set channel corresponding to the bit of value corresponding as itself in the working channel map information
Destination channel.
Embodiment 16
In the receiving unit 111 shown in receiving unit 101 and Figure 11 shown in Figure 10, it can include：Receive and perform
Subelement and the second parsing subelement.
Described receive performs subelement, for receiving the channel-switch-announcement of CAP transmissions.
The second parsing subelement, for parsing each centre frequency carried in the channel-switch-announcement, it is determined that respectively
The channel of centre frequency instruction destination channel corresponding to itself.
Embodiment 17
In the receiving unit 111 shown in receiving unit 101 and Figure 11 shown in Figure 10, it can include：Receive and perform
Subelement and the 3rd parsing subelement.
Described receive performs subelement, for receiving the channel-switch-announcement of CAP transmissions.
The 3rd parsing subelement, for being during parsing the instruction channel carried in the channel-switch-announcement switching
The channel mode of no transmission data, analysis result is supplied to the data transmission device of end side；And/or the parsing letter
The instruction carried in road switching notice is since the channel for receiving channel-switch-announcement to and performing the duration channel switching
Switching counter, analysis result is supplied to switch unit（It is in Fig. 10 switch unit 102, is in fig. 11 switch unit
112）.
Unless otherwise specific statement, term such as handle, calculate, computing, determination, display etc. can refer to it is one or more
Individual processing or action and/or the process of computing system or similar devices, the action and/or process will be indicated as processing system
The data manipulation of physics (such as electronics) amount in the register or memory of system and it is converted into and is similarly represented as processing system
Memory, other data of the register either storage of other this type of informations, transmitting or physical quantity in display device.Information
It can be represented with signal using any one of a variety of different technologies and method.For example, in above description
Data, instruction, order, information, signal, bit, symbol and the chip referred to can use voltage, electric current, electromagnetic wave, magnetic field or grain
Son, light field or particle or its any combination represent.
It should be understood that the particular order or level of the step of during disclosed are the examples of illustrative methods.Based on setting
Count preference, it should be appreciated that during the step of particular order or level can be in the feelings for the protection domain for not departing from the disclosure
Rearranged under condition.Appended claim to a method gives the key element of various steps with exemplary order, and not
It is to be limited to described particular order or level.
In above-mentioned detailed description, various features combine in single embodiment together, to simplify the disclosure.No
This open method should be construed to reflect such intention, i.e. the embodiment of theme claimed needs to compare
The more features of feature clearly stated in each claim.On the contrary, as appended claims is reflected
Like that, the present invention is in the state fewer than whole features of disclosed single embodiment.Therefore, appended claims
It is hereby expressly incorporated into detailed description, wherein each claim is alone as the single preferred embodiment of the present invention.
It should also be appreciated by one skilled in the art that the various illustrative boxes described with reference to the embodiments herein, mould
Block, circuit and algorithm steps can be implemented as electronic hardware, computer software or its combination.In order to clearly demonstrate hardware and
Interchangeability between software, various illustrative part, frame, module, circuit and steps are carried out around its function above
It is generally described.Hardware is implemented as this function and is also implemented as software, depending on specific application and to whole
The design constraint that system is applied.Those skilled in the art can be directed to each application-specific, be realized in a manner of flexible
Described function, it is still, this to realize that decision-making should not be construed as the protection domain away from the disclosure.
For performing the general processor, digital signal processor (DSP), application specific integrated circuit of herein described function
(ASIC), field programmable gate array (FPGA) or other PLDs, discrete gate or transistor logic, discrete hard
Part component or its any combination, it is possible to achieve or various illustrative boxes of the execution with reference to described by the embodiments herein
Figure, module and circuit.General processor can be microprocessor, or, the processor can also be any conventional processor,
Controller, microcontroller or state machine.Processor may also be embodied as the combination of computing device, for example, DSP and microprocessor
Combination, the combination of multi-microprocessor, one or more microprocessors and DSP core, or any other such structure.
The step of method or algorithm with reference to described by the embodiments herein, can be embodied directly in hardware, be held by processor
Capable software module or its combination.Software module can be located at RAM memory, flash memory, ROM memory, eprom memory,
The storage of eeprom memory, register, hard disk, mobile disk, CD-ROM or any other form well known in the art is situated between
In matter.A kind of exemplary storage medium is connected to processor, so as to enable a processor to from the read information, and
Information can be write to the storage medium.Certainly, storage medium can also be the part of processor.Processor and storage medium
It can be located in ASIC.The ASIC can be located in user terminal.Certainly, processor and storage medium can also be used as discrete sets
Part is present in user terminal.
To enable any technical staff in the art to realize or using the present invention, disclosed embodiment being entered above
Description is gone.To those skilled in the art；The various modification modes of these embodiments will be apparent from, and this
The General Principle of text definition can also be applied to other embodiments on the basis of the spirit and scope of the disclosure is not departed from.
Therefore, the disclosure is not limited to embodiments set forth herein, but most wide with principle disclosed in the present application and novel features
Scope is consistent.
Realized for software, technology described in this application can use the module for performing herein described function (for example, mistake
Journey, function etc.) realize.These software codes can be stored in memory cell and by computing device.Memory cell can
With realize in processor, can also realize outside processor, in the latter case, it via various means by correspondence
It is coupled to processor, these are all well known in the art.
Moreover, various aspects or features described herein can be as the programming using standard and/or engineering technology
Method, apparatus or product realize.Term as used herein " product " is that to include can be from any computer-readable
Equipment, carrier wave or medium are come the computer program that accesses.For example, computer-readable medium can include but is not limited to magnetic storage
Equipment (for example, hard disk, floppy disk, tape etc.), CD (for example, compact discs (CD), digital versatile disc (DVD) etc.), intelligence
Card and flash memory device (for example, EPROM, card, rod, Keyed actuator etc.).In addition, various storage media described herein
It is expressed as one or more equipment for storage information and/or other machine readable medias.Term " machine readable media " wraps
Include but be not limited to store, include and/or carry wireless channel and the various other media of instruction and/or data.
Described above includes the citing of one or more embodiments.Certainly, in order to above-described embodiment is described and description portion
The all possible combination of part or method is impossible, but it will be appreciated by one of ordinary skill in the art that each implementation
Example can do further combinations and permutations.Therefore, embodiment described herein is intended to fall into appended claims
Protection domain in all such changes, modifications and variations.In addition, with regard to the term used in specification or claims
"comprising", the mode that covers of the word are similar to term " comprising ", just as " including " solved in the claims as link word
As releasing.In addition, the use of any one term "or" in the specification of claims is to represent " non-exclusionism
Or ".
Claims (35)
1. a kind of channel switching method, it is characterised in that this method includes：
Central access point CAP determines that channel quality is less than the channel of given threshold in the current channel itself taken；
The STA that CAP will reside on the channel determined selects more than one corresponding to each target STA as target STA
Continuous or discrete destination channel；
CAP sends the channel-switch-announcement for carrying destination channel instruction to each target STA, each target STA is switched to pair
The destination channel answered；
Channel mode and/or channel-switch count device, the channel mode are also carried in the channel-switch-announcement
Data whether are transmitted during instruction channel switching, and the channel-switch count device instruction receives channel-switch-announcement to starting to hold
Duration between the switching of row channel.
2. the method as described in claim 1, it is characterised in that also include：
CAP selects more than one continuous or discrete destination channel corresponding to itself, and is sending channel to each target STA
Destination channel corresponding to itself is switched to after switching notice.
3. method as claimed in claim 2, it is characterised in that also include：
CAP selection target system bandwidths, and change current system bandwidth when being switched to destination channel corresponding to itself.
4. method as claimed in claim 3, it is characterised in that the goal systems band is also carried in the channel-switch-announcement
Width, make target STA that the bandwidth of operation of itself is adjusted in the goal systems bandwidth range.
5. method as claimed in claim 4, it is characterised in that CAP is further by except the STA resided on the channel determined
Outside and not the STA in the goal systems bandwidth range as target STA.
6. the method as described in claim 1, it is characterised in that CAP is by receiving all or part of STA in this serving cell
The measurement result of feedback, determine that the channel quality is less than the channel of given threshold.
7. method as claimed in claim 6, it is characterised in that also include：CAP is to all or part of in this serving cell
STA sends measurement request.
8. the method as described in claim 1, it is characterised in that CAP is by parsing the current each channel itself taken by other
The situation of wireless communication system interference, determine that the channel quality is less than the channel of given threshold.
9. the method as described in claim 1, it is characterised in that the load that CAP passes through the current each channel itself taken of parsing
Situation, determine that the channel quality is less than the channel of given threshold.
10. the method as described in any one of claim 1 to 9, it is characterised in that the destination channel instruction includes：Starting letter
The channel number and working channel map information in road；Each bit in the working channel map information, it is corresponding from described
The channel that beginning channel starts；When filling in setting value in a bit, channel corresponding to the bit is indicated
For destination channel.
11. the method as described in any one of claim 1 to 9, it is characterised in that the destination channel instruction includes：Each mesh
Mark the centre frequency of channel.
12. the method as described in any one of claim 1 to 9, it is characterised in that instruction is also carried in the channel-switch-announcement
Whether channel transmits the channel mode of data during switching, make target STA correct transceiving datas during channel switches；
And/or instruction is also carried in the channel-switch-announcement since channel-switch-announcement being received to and performs channel switches
Duration channel-switch count device, make target STA start on time perform channel switching.
13. the method as described in any one of claim 1 to 9, it is characterised in that when all STA in this serving cell are
Target STA and during corresponding destination channel all same, CAP broadcasts the channel-switch-announcement；
When destination channel corresponding to the part STA in this serving cell is target STA or each target STA differs,
CAP sends the channel-switch-announcement to each target STA unicasts respectively.
14. a kind of network side apparatus of channel switching, it is characterised in that the device includes：
Channel measurement unit, for determining that channel quality is less than the channel of given threshold in the current channel itself taken；
Handover decisions unit, the STA on channel determined for will reside in the channel measurement unit as target STA,
And select more than one continuous or discrete destination channel corresponding to each target STA；
Notification unit, the channel-switch-announcement of destination channel instruction is carried for being sent to each target STA；
Channel mode and/or channel-switch count device, the channel mode are also carried in the channel-switch-announcement
Data whether are transmitted during instruction channel switching, and the channel-switch count device instruction receives channel-switch-announcement to starting to hold
Duration between the switching of row channel.
15. device as claimed in claim 14, it is characterised in that the handover decisions unit, be further used for selecting itself
More than one corresponding continuous or discrete destination channel；
Also include in the device：Switch unit, for after the notification unit sends channel-switch-announcement to each target STA
It is switched to destination channel corresponding to itself.
16. device as claimed in claim 15, it is characterised in that also include in the device：System bandwidth adjustment unit, is used for
Selection target system bandwidth, and when the switch unit is switched to destination channel corresponding to itself, change current system bandwidth.
17. device as claimed in claim 16, it is characterised in that the system bandwidth adjustment unit, further by the mesh
Mark system bandwidth is sent to the notification unit, for its carrying in channel-switch-announcement.
18. device as claimed in claim 17, it is characterised in that the handover decisions unit, will further remove and reside in really
Outside the STA on channel made, bandwidth of operation not the STA in the goal systems bandwidth range as target STA.
19. device as claimed in claim 14, it is characterised in that the channel measurement unit includes：
Measurement result receiving subelement, for receiving the measurement result of the feedbacks of all or part of STA in this serving cell；
First performs subelement, for according to the measurement result, it is determined that channel quality is less than in the current channel itself taken
The channel of given threshold.
20. device as claimed in claim 19, it is characterised in that also include in the channel measurement unit：Measurement request
Unit, for sending measurement request to all or part of STA in this serving cell.
21. device as claimed in claim 14, it is characterised in that the channel measurement unit includes：
First parsing subelement, situation about being disturbed for parsing the current each channel itself taken by other wireless communication systems；
Second performs subelement, for the analysis result drawn according to the described first parsing subelement, it is determined that current itself take
Channel in channel quality be less than given threshold channel.
22. device as claimed in claim 14, it is characterised in that the channel measurement unit includes：
Second parsing subelement, for parsing the loading condition of the current each channel itself taken；
3rd performs subelement, for the analysis result drawn according to the described second parsing subelement, it is determined that current itself take
Channel in channel quality be less than given threshold channel.
23. the device as described in any one of claim 14 to 22, it is characterised in that the notification unit includes：
First determination subelement, for determining the starting channel number of itself busy channel；
Subelement is generated, for generating working channel map information for each target STA, and according to corresponding to target STA
Setting value is filled in destination channel, the corresponding bit position in working channel map information；
First notice performs subelement, and its working channel map information and starting channel are carried for being sent to each target STA
Number channel-switch-announcement.
24. the device as described in any one of claim 14 to 22, it is characterised in that the notification unit includes：
Second determination subelement, for determining the centre frequency of each destination channel corresponding to each target STA；
Second notice performs subelement, is carried for being sent to each target STA in each target operation channel corresponding to it
The channel-switch-announcement of frequency of heart.
25. the device as described in any one of claim 14 to 22, it is characterised in that also include in the device：Channelling mode is true
Order member, for whether transmitting the channel mode of data during determining instruction channel switching, carried for the notification unit
In the channel-switch-announcement；
And/or channel-switch count device determining unit, for determining that since instruction perform letter receive channel-switch-announcement to
The channel-switch count device of duration between road switching, is carried in the channel-switch-announcement for the notification unit.
26. the device as described in any one of claim 14 to 22, it is characterised in that the notification unit is in this serving cell
All STA when being all target STA and corresponding destination channel all same, broadcast the channel-switch-announcement；It is small in this service
When part STA in area differs for destination channel corresponding to target STA or each target STA, respectively to each target
STA unicasts send the channel-switch-announcement.
27. a kind of end side device of channel switching, it is characterised in that the device includes：
Receiving unit, for receiving the channel-switch-announcement of CAP transmissions, it is corresponding that instruction itself is carried in the channel-switch-announcement
More than one continuous or discrete destination channel destination channel instruction；
Switch unit, for according to the channel-switch-announcement, being switched to destination channel corresponding to itself；
Channel mode and/or channel-switch count device, the channel mode are also carried in the channel-switch-announcement
Data whether are transmitted during instruction channel switching, and the channel-switch count device instruction receives channel-switch-announcement to starting to hold
Duration between the switching of row channel.
28. device as claimed in claim 27, it is characterised in that also include in the device：Bandwidth of operation adjustment unit, is used for
According to the goal systems bandwidth carried in the channel-switch-announcement, itself bandwidth of operation is adjusted to the goal systems bandwidth
In the range of.
29. the device as described in claim 27 or 28, it is characterised in that the receiving unit includes：
Receive and perform subelement, for receiving the channel-switch-announcement of CAP transmissions；
First parsing subelement, for parsing the starting channel number carried in the channel-switch-announcement and working channel mapping letter
Breath, determines to fill in the working channel map information and set channel corresponding to the bit of value and believe for itself corresponding target
Road.
30. the device as described in claim 27 or 28, it is characterised in that the receiving unit includes：
Receive and perform subelement, for receiving the channel-switch-announcement of CAP transmissions；
Second parsing subelement, for parsing each centre frequency carried in the channel-switch-announcement, determines each centre frequency
The channel of instruction destination channel corresponding to itself.
31. the device as described in claim 27 or 28, it is characterised in that the receiving unit includes：
Receive and perform subelement, for receiving the channel-switch-announcement of CAP transmissions；
3rd parsing subelement, for whether transmitting number during parsing the instruction channel carried in the channel-switch-announcement switching
According to channel mode, analysis result is supplied to the data transmission device of end side；And/or the parsing channel switching is logical
Know the instruction of carrying since the channel-switch count for receiving channel-switch-announcement to and performing the duration channel switching
Device, analysis result is supplied to the switch unit.
A kind of 32. method for channel switching, it is characterised in that this method includes：
Generation carries the channel-switch-announcement of destination channel instruction, the destination channel indicate to be used for indicate more than one it is continuous or
Discontinuous destination channel, the receiving terminal of reception channel-switch-announcement is set to be switched to the destination channel；
Send the channel-switch-announcement；
Channel mode and/or channel-switch count device, the channel mode are also carried in the channel-switch-announcement
Data whether are transmitted during instruction channel switching, and the channel-switch count device instruction receives channel-switch-announcement to starting to hold
Duration between the switching of row channel.
33. method as claimed in claim 32, it is characterised in that goal systems band is also carried in the channel-switch-announcement
Width, make the receiving terminal of reception channel-switch-announcement that the bandwidth of operation of itself is adjusted in the goal systems bandwidth range.
34. the method as described in claim 31 or 32, it is characterised in that instruction channel is also carried in the channel-switch-announcement
The channel mode of data whether is transmitted during switching, make the receiving terminal of reception channel-switch-announcement during channel switches just
True transceiving data；And/or also carry instruction in the channel-switch-announcement and letter is performed to since receiving channel-switch-announcement
The channel-switch count device of duration between road switching, the receiving terminal of reception channel-switch-announcement is started execution channel on time and cut
Change.
35. the method as described in any one of claim 32 to 34, it is characterised in that the channel-switch-announcement is encapsulated in channel
Realized in switching notice frame.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110224711.3A CN102917428B (en) | 2011-08-05 | 2011-08-05 | Channel switching method and device |
| PCT/CN2012/079645 WO2013020483A1 (en) | 2011-08-05 | 2012-08-03 | Method and device for use in channel handover |
| CN201280013188.2A CN103609165B (en) | 2011-08-05 | 2012-08-03 | method and device for channel switching |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110224711.3A CN102917428B (en) | 2011-08-05 | 2011-08-05 | Channel switching method and device |
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| CN102917428A CN102917428A (en) | 2013-02-06 |
| CN102917428B true CN102917428B (en) | 2018-03-20 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP3048856B1 (en) * | 2013-11-15 | 2018-07-04 | Huawei Technologies Co., Ltd. | Station access management device and method for wireless local area network |
| US9980160B2 (en) * | 2015-11-25 | 2018-05-22 | Terranet Ab | Interference mitigation in dense mesh networks |
| CN106131909B (en) * | 2016-06-29 | 2021-06-22 | 新华三技术有限公司 | Channel switching method and device |
| CN109716819B (en) * | 2016-12-19 | 2021-06-29 | 华为技术有限公司 | Channel control method and equipment |
| US20200367124A1 (en) * | 2019-05-16 | 2020-11-19 | Mediatek Singapore Pte. Ltd. | Synchronization Of Client And Access Point During Channel Switch In Wireless Communications |
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| WO2011093642A2 (en) * | 2010-01-26 | 2011-08-04 | 엘지전자 주식회사 | Station operation method and apparatus in tv whitespace |
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| CN1572086A (en) * | 2000-09-15 | 2005-01-26 | 皇家菲利浦电子有限公司 | Dynamic channel selection scheme for ieee 802.11 WLANs |
| CN101483913A (en) * | 2008-01-09 | 2009-07-15 | 中兴通讯股份有限公司 | Method for implementing base station access by terminal, terminal and base station for implementing the method |
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