CN105307186A - Information sending and receiving method and device - Google Patents
Information sending and receiving method and device Download PDFInfo
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- CN105307186A CN105307186A CN201410347445.7A CN201410347445A CN105307186A CN 105307186 A CN105307186 A CN 105307186A CN 201410347445 A CN201410347445 A CN 201410347445A CN 105307186 A CN105307186 A CN 105307186A
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Abstract
The invention discloses an information sending method used for solving the technical problem that a WLAN (Wireless Local Area Network) device takes a relatively long time to perform radar detection. The information sending method comprises the steps that an AP performs CAC (Channel Availability Check) for a first channel to determine whether a radar signal exists in the first channel; and if the radar signal exists in the first channel, the AP sends a CAC result to a WLAN control device or other AP, wherein the CAC result comprises the identifier of the first channel. The invention also discloses an information receiving method and corresponding devices.
Description
Technical field
The present invention relates to the communications field, particularly a kind of information sending, receiving method and device
Background technology
WLAN (wireless local area network) (English: wirelesslocalareanetworks, abbreviation: in 5G hertz (English: hertz, symbol: Hz) frequency range WLAN), channel is more.In 5GHz frequency range, interference comprises radar signal.Country variant has different rules and regulations, and for some country, in the channel of 5GHz frequency range, some channel does not exist radar signal, and some channel exists radar signal.For the channel that may there is radar signal, according to the laws and regulations requirement of some country, (English: DynamicFrequencySelection, abbreviation: DFS) function, to avoid interference radar or to be subject to the interference from radar to need to perform dynamic frequency selection.Below this kind of channel is called the channel needing to carry out DFS.
Wlan device, when use may exist the channel of radar signal, needs to carry out detections of radar to this channel.Simply introduce the process of detections of radar below:
1, when wlan device is switched to a new channel, if this channel is the channel that possible there is radar signal, then first need that channel availability inspection is carried out to this channel (English: channelavailabilitycheck, abbreviation: CAC), whether there is radar signal to detect this channel.Carrying out in the process of CAC to this channel, this wlan device can not transmitting data frame.
If 2 wlan devices determine that this channel does not exist radar signal after performing CAC process, so this wlan device can work on this channel, and detects on this channel whether there is radar signal in real time.
If 3 wlan devices on this channel transmitting data frame time detect that this channel exists radar signal, then must stop the transmission of Frame, select and move to a new channel.The time of channel migration cost is generally no more than 10 seconds.If the new channel selected still needs the channel carrying out DFS, so must continue equally to perform CAC process.
4, for the channel that there is radar signal being detected, wlan device can not be selected and move to this channel within the unoccupied cycle.Radar signal is there is below and channel within the unoccupied cycle is called the channel being in unoccupied state by detecting.
From above-mentioned flow process, radar signal have impact on the availability of channel, this comprises 2 aspects, be on the one hand: if channel exists radar signal, then at least can not use this channel within the detection time of CAC and in unoccupied cycle time, if this channel exists radar signal always, then can not use this channel for a long time; Be on the other hand: if channel does not exist radar signal, then can not use this channel within the CAC time.
The problem brought so is mainly: the channel that may there is radar signal for, each wlan device using this channel that needs needs first to carry out CAC to this channel, and this wlan device cannot transmitting data frame in CAC process, that is, for each wlan device, use each may there is the channel of radar signal time need first to carry out CAC, the time spent in radar detection is longer.
Therefore, how reducing the time that wlan device carries out radar detection, is a problem that need solve.
Summary of the invention
The embodiment of the present invention provides a kind of information processing method and device, the technical problem that the time for solving wlan device cost when carrying out radar detection is longer.
First aspect, provides a kind of method for sending information, comprising:
AP carries out CAC to the first channel, to determine whether described first channel exists radar signal;
If described first channel exists radar signal, then described AP sends CAC result to WLAN (wireless local area network) control appliance or to other AP, and described CAC result comprises the mark of described first channel.
In conjunction with first aspect, in the first possible implementation of first aspect, AP carries out CAC to the first channel, comprising:
Described AP receives the Indication message that described WLAN (wireless local area network) control appliance sends, and described Indication message is used to indicate described AP and carries out CAC to described first channel;
Described AP, according to the instruction of described Indication message, carries out CAC to described first channel.
In conjunction with first aspect, in the implementation that the second of first aspect is possible, described AP sends described CAC result to other AP, comprising: described AP sends described CAC result at all channels.
In conjunction with the implementation that the second of first aspect or first aspect is possible, in the third possible implementation of first aspect, the BSS of each AP in other AP described is different from the BSS of described AP.
Second aspect, provides a kind of message receiving method, comprising:
Receiving equipment receives the notification message that an AP sends, and carry the mark of the first channel in described notification message, it is the channel that there is radar signal that described notification message indicates the first channel;
Described first channel, according to the mark of described first channel, is set to forbid seizure condition by described receiving equipment.
In conjunction with second aspect, in the first possible implementation of second aspect, described receiving equipment is WLAN (wireless local area network) control appliance, and after described first channel is set to forbid seizure condition, described method also comprises:
Described WLAN (wireless local area network) control appliance sends the obturation instruction comprising the mark of described first channel, described obturation instruction be used to indicate the AP receiving described obturation instruction described first channel is set to described in forbid seizure condition.
In conjunction with second aspect, in the implementation that the second of second aspect is possible, described receiving equipment is WLAN (wireless local area network) control appliance, and after described first channel is set to forbid seizure condition, described method also comprises:
The AP being operated in described first channel in the AP that described WLAN (wireless local area network) control appliance controls to described WLAN (wireless local area network) control appliance sends the switching instruction comprising the mark of second channel, describedly switches instruction and is used to indicate and receives the described AP switching instruction and be switched to described second channel;
Wherein, the state of described second channel is not forbid seizure condition in the record of described WLAN (wireless local area network) control appliance.
In conjunction with second aspect or the first possible implementation of second aspect or the possible implementation of the second of second aspect, in the third possible implementation of second aspect, described receiving equipment is WLAN (wireless local area network) control appliance, before the notification message that reception the one AP sends, described method also comprises: described WLAN (wireless local area network) control appliance sends a CAC instruction respectively to a described AP and the 2nd AP and the 2nd CAC indicates, the mark of described first channel is carried in a described CAC instruction, the mark of the 3rd channel is carried in described 2nd CAC instruction, a described CAC instruction is used to indicate a described AP and carries out CAC to described first channel, described 2nd CAC instruction is used to indicate described 2nd AP and carries out CAC to described 3rd channel, wherein, described first channel is different from described 3rd channel.
In conjunction with second aspect, in the 4th kind of possible implementation of second aspect, described receiving equipment is the 3rd AP, the BSS of described 3rd AP is different from the BSS of a described AP, after described first channel is set to forbid seizure condition, described method also comprises: described 3rd AP is switched to the 4th channel; Wherein, the state of described 4th channel is not forbid seizure condition in the record of described 3rd AP.
The third aspect, provides a kind of AP, comprising:
Detection module, for carrying out CAC to the first channel, to determine whether described first channel exists radar signal;
Sending module, if there is radar signal for described first channel, then send CAC result to WLAN (wireless local area network) control appliance or to other AP, described CAC result comprises the mark of described first channel.
In conjunction with the third aspect, in the first possible implementation of the third aspect, described detection module specifically for: receive described WLAN (wireless local area network) control appliance send Indication message, described Indication message is used to indicate described AP and carries out CAC to described first channel; According to the instruction of described Indication message, CAC is carried out to described first channel.
In conjunction with the third aspect, in the implementation that the second of the third aspect is possible, described sending module specifically for: send described CAC result at all channels.
In conjunction with the implementation that the second of the third aspect or the third aspect is possible, in the third possible implementation of the third aspect, the BSS of each AP in other AP described is different from the BSS of described AP.
Fourth aspect, provides a kind of receiving equipment, comprising:
Receiver module, for receiving the notification message that an AP sends, carry the mark of the first channel in described notification message, it is the channel that there is radar signal that described notification message indicates the first channel;
Module is set, for the mark according to described first channel, described first channel is set to forbid seizure condition.
In conjunction with fourth aspect, in the first possible implementation of fourth aspect, described receiving equipment is WLAN (wireless local area network) control appliance, described WLAN (wireless local area network) control appliance also comprises sending module, for: arrange after described first channel is set to forbid seizure condition by module described, send comprise the mark of described first channel obturation instruction, described obturation instruction be used to indicate receive described obturation instruction AP described first channel is set to described in forbid seizure condition.
In conjunction with fourth aspect, in the implementation that the second of fourth aspect is possible, described receiving equipment is WLAN (wireless local area network) control appliance, described WLAN (wireless local area network) control appliance also comprises sending module, for: arrange after described first channel is set to forbid seizure condition by module described, the AP transmission being operated in described first channel in the AP that described WLAN (wireless local area network) control appliance controls comprises the switching instruction of the mark of second channel, and described switching instruction is used to indicate the AP receiving described switching instruction and is switched to described second channel; Wherein, the state of described second channel is not forbid seizure condition in the record of described WLAN (wireless local area network) control appliance.
In conjunction with fourth aspect or the first possible implementation of fourth aspect or the possible implementation of the second of fourth aspect, in the third possible implementation of fourth aspect, described receiving equipment is WLAN (wireless local area network) control appliance, described WLAN (wireless local area network) control appliance also comprises sending module, for: receive the notification message of an AP transmission at described receiver module before, to a described AP and the 2nd AP send respectively the one CAC instruction and the 2nd CAC indicate, the mark of described first channel is carried in a described CAC instruction, the mark of the 3rd channel is carried in described 2nd CAC instruction, a described CAC instruction is used to indicate a described AP and carries out CAC to described first channel, described 2nd CAC instruction is used to indicate described 2nd AP and carries out CAC to described 3rd channel, wherein, described first channel is different from described 3rd channel.
In conjunction with fourth aspect, in the 4th kind of possible implementation of fourth aspect, described receiving equipment is the 3rd AP, the BSS of described 3rd AP is different from the BSS of a described AP, described 3rd AP also comprises handover module, for: arrange after described first channel is set to forbid seizure condition by module described, be switched to the 4th channel; Wherein, the state of described 4th channel is not forbid seizure condition in the record of described 3rd AP.
5th aspect, provides a kind of AP, comprises processor, wired network interface controller, radio network interface controller and memory, and described wired network interface controller, described radio network interface controller and described memory are all connected with described processor;
Described processor carries out CAC by described radio network interface controller to the first channel, to determine whether described first channel exists radar signal;
If described first channel exists radar signal, then described processor sends CAC result by described wired network interface controller to WLAN (wireless local area network) control appliance, or sends CAC result by described radio network interface controller to other AP; Described CAC result comprises the mark of described first channel.
In conjunction with the 5th aspect, in the first possible implementation in the 5th, described processor specifically for: by described wired network interface controller receive described WLAN (wireless local area network) control appliance send Indication message, described Indication message is used to indicate described AP and carries out CAC to described first channel; According to the instruction of described Indication message, CAC is carried out to described first channel.
In conjunction with the 5th aspect, in the implementation that the second in the 5th is possible, described processor specifically for: send described CAC result by described radio network interface controller at all channels.
In conjunction with the implementation that the second of the 5th aspect or the 5th aspect is possible, in the third the possible implementation in the 5th, the BSS of each AP in other AP described is different from the BSS of described AP.
In conjunction with the first possible implementation of the 5th aspect or the 5th aspect to any one the possible implementation in the third possible implementation, in the 4th kind of possible implementation in the 5th, described processor is used for the notification message being received an AP transmission by described radio network interface controller, carry the mark of the first channel in described notification message, it is the channel that there is radar signal that described notification message indicates the first channel;
Described processor is used for the mark according to described first channel, is set to forbid seizure condition by described first channel.
In conjunction with the 4th kind of possible implementation of the 5th aspect, in the 5th kind of possible implementation in the 5th, described processor is used for: after described first channel is set to forbid seizure condition, be switched to the 4th channel; Wherein, the state of described 4th channel is not forbid seizure condition in the record of described AP; The BSS of described AP is different from the BSS of a described AP.
6th aspect, provides a kind of WLAN (wireless local area network) control appliance, comprises processor, network interface controller and memory, and described network interface controller and described memory are all connected with described processor;
Described processor is used for the notification message being received an AP transmission by described network interface controller, and carry the mark of the first channel in described notification message, it is the channel that there is radar signal that described notification message indicates the first channel;
Described processor is used for the mark according to described first channel, is set to forbid seizure condition by described first channel.
In conjunction with the 6th aspect, in the first possible implementation in the 6th, described processor is used for after described first channel is set to forbid seizure condition, sent the obturation instruction comprising the mark of described first channel by described network interface controller, described obturation instruction be used to indicate the AP receiving described obturation instruction described first channel is set to described in forbid seizure condition.
In conjunction with the 6th aspect, in the implementation that the second in the 6th is possible, described processor is used for after described first channel is set to forbid seizure condition, the AP being operated in described first channel in the AP controlled to described WLAN (wireless local area network) control appliance by described network interface controller sends the switching instruction comprising the mark of second channel, describedly switches instruction and is used to indicate and receives the described AP switching instruction and be switched to described second channel; Wherein, the state of described second channel is not forbid seizure condition in the record of described WLAN (wireless local area network) control appliance.
In conjunction with the 6th aspect or the first possible implementation of the 6th aspect or the possible implementation of the second of the 6th aspect, in the third possible implementation in the 6th, described processor is used for before the notification message being received an AP transmission by described network interface controller, by described network interface controller to a described AP and the 2nd AP send respectively the one CAC instruction and the 2nd CAC indicate, the mark of described first channel is carried in a described CAC instruction, the mark of the 3rd channel is carried in described 2nd CAC instruction, a described CAC instruction is used to indicate a described AP and carries out CAC to described first channel, described 2nd CAC instruction is used to indicate described 2nd AP and carries out CAC to described 3rd channel, wherein, described first channel is different from described 3rd channel.
In the embodiment of the present invention, if described AP detection determines that described first channel exists radar signal, then can send described CAC result to described WLAN (wireless local area network) control appliance or other AP, described WLAN (wireless local area network) control appliance or other AP described just can know described first channel and there is radar signal after receiving described CAC result, like this, described WLAN (wireless local area network) control appliance or other AP described if desired select new channel, described first channel would not be considered, ensure that described WLAN (wireless local area network) control appliance or other AP described can choose the channel that there is not radar signal quickly as far as possible, decrease described WLAN (wireless local area network) control appliance or other AP described and the time that radar detection spends is carried out to channel.
Accompanying drawing explanation
Fig. 1 is the main flow figure of method for sending information in the embodiment of the present invention;
Fig. 2 is the main flow figure of message receiving method in the embodiment of the present invention;
Fig. 3 is the primary structure block diagram of AP in the embodiment of the present invention;
Fig. 4 is the primary structure block diagram of receiving equipment in the embodiment of the present invention;
Fig. 5 is the primary structure schematic diagram of AP in the embodiment of the present invention;
Fig. 6 is the primary structure schematic diagram of WLAN (wireless local area network) control appliance in the embodiment of the present invention;
Fig. 7 is the another kind of primary structure schematic diagram of AP in the embodiment of the present invention.
Embodiment
The embodiment of the present invention provides a kind of method for sending information, and described method comprises: and access point (English: accesspoint, abbreviation: AP) CAC is carried out to the first channel, to determine whether described first channel exists radar signal; If described first channel exists radar signal, then described AP sends CAC result to WLAN (wireless local area network) control appliance or to other AP, and described CAC result comprises the mark of described first channel.
In the embodiment of the present invention, if described AP detection determines that described first channel exists radar signal, then can send described CAC result to described WLAN (wireless local area network) control appliance or other AP, described WLAN (wireless local area network) control appliance or other AP described just can know described first channel and there is radar signal after receiving described CAC result, like this, described WLAN (wireless local area network) control appliance or other AP described if desired select new channel, described first channel would not be considered, ensure that described WLAN (wireless local area network) control appliance or other AP described can choose the channel that there is not radar signal quickly as far as possible, decrease described WLAN (wireless local area network) control appliance or other AP described and the time that radar detection spends is carried out to channel.
First summation frame structure of the present invention once.
In the embodiment of the present invention, described WLAN (wireless local area network) control appliance can be such as wireless access controller (English: AccessController, abbreviation: AC), or can be such as wireless network management server etc.Receiving equipment can be such as described WLAN (wireless local area network) control appliance, also can be AP.
Be mainly concerned with the control to AP in the embodiment of the present invention, in the process controlled, can be controlled AP by described WLAN (wireless local area network) control appliance, also can be controlled AP by AP.If controlled AP by described WLAN (wireless local area network) control appliance, then described WLAN (wireless local area network) control appliance can have two kinds to the control mode of AP.
The first: control mode completely.Under this control mode, AP does not have initiative, and the instruction just sent according to described WLAN (wireless local area network) control appliance performs corresponding task, and the instruction such as sent according to described WLAN (wireless local area network) control appliance is carried out CAC, moved to new channel, etc.
The second: not exclusively control mode.Under this control mode, AP has initiative, and described WLAN (wireless local area network) control appliance can send corresponding message to AP, but AP can select new channel voluntarily, upon selection, CAC can be carried out to new channel voluntarily, and the control of described WLAN (wireless local area network) control appliance need not be waited for.
Below in conjunction with Figure of description, the embodiment of the present invention is described in further detail.
Refer to Fig. 1, the embodiment of the present invention provides a kind of method for sending information, and the main flow of described method is described below.
Step 101:AP carries out CAC to the first channel, to determine whether described first channel exists radar signal.
No matter being controlled AP by described WLAN (wireless local area network) control appliance, or controlled AP by AP, is all carry out CAC by AP to described first channel.
When described AP is switched to described first channel, if described first channel is the channel needing to carry out DFS, then described AP can carry out radar detection to described first channel, namely carries out CAC, can determine whether described first channel exists radar signal by CAC.
Optionally, in the embodiment of the present invention, if by described WLAN (wireless local area network) control appliance control AP, and described WLAN (wireless local area network) control appliance adopts the AP controlled by described WLAN (wireless local area network) control appliance is the control mode controlled completely, then, described AP carries out CAC to described first channel, can comprise: described AP receives the Indication message that described WLAN (wireless local area network) control appliance sends, and described Indication message is used to indicate described AP and carries out CAC to described first channel; Described AP, according to the instruction of described Indication message, carries out CAC to described first channel.
Namely, under this control mode, described WLAN (wireless local area network) control appliance sends described Indication message to described AP, the mark of described first channel can be carried in described Indication message, described AP is according to the instruction of described Indication message, can to the channel corresponding to the mark of described first channel, namely described first channel, carries out CAC.
Optionally, in the embodiment of the present invention, described WLAN (wireless local area network) control appliance can safeguard multiple radar territory, and a radar territory is the set of one or more AP.Generally AP close for geographical position is added a radar territory, geographical position can be determined according to the distance between AP and the landform residing for AP, or the AP that radio wave can cover is added a radar territory.Such as, the AP in same room with them can be added a radar territory.Again such as, the AP separated by a mountain or heavy construction can be added different radar territory.Again such as, by mutually detecting the mode of radio wave between AP, can directly or indirectly can detect that the AP of radio wave adds a radar territory automatically.All AP that WLAN (wireless local area network) control appliance also can be controlled are as the AP in same radar territory.
Such as, static configuration method can be selected to configure radar territory, can be specifically: by network management personnel, different AP be combined generation radar territory.Such as, all AP controlled can be combined into a radar territory by described WLAN (wireless local area network) control appliance, maybe each AP controlled by described WLAN (wireless local area network) control appliance can be divided according to regional location, be combined into multiple radar territory.
Like this, under the control mode controlled completely, if described WLAN (wireless local area network) control appliance needs to select AP to detect channel, the radar territory belonging to this channel can be determined, the AP in this radar territory is selected to detect this channel afterwards again, or, when described WLAN (wireless local area network) control appliance will select new channel for AP, described WLAN (wireless local area network) control appliance can for this AP selects new channel in the radar territory belonging to this AP, etc.Like this, the select time of described WLAN (wireless local area network) control appliance can be saved under the prerequisite reducing range of choice, also can improve selection accuracy.
Step 102: if described first channel exists radar signal, then described AP sends CAC result to WLAN (wireless local area network) control appliance or to other AP, and described CAC result comprises the mark of described first channel.
If by described WLAN (wireless local area network) control appliance control AP, then no matter which kind of control mode described WLAN (wireless local area network) control appliance adopts, described AP will send described CAC result to described WLAN (wireless local area network) control appliance.If by AP control AP, then described AP can send described CAC result to other AP described.The AP that this CAC result shows to send this CAC result finds that described first channel exists radar signal.
Optionally, in the embodiment of the present invention, if described AP sends described CAC result to other AP, then Basic Service Set (English: BasicServiceSet, the abbreviation: BSS) different from the BSS of described AP of each AP in other AP described.
Optionally, in the embodiment of the present invention, described AP sends described CAC result to other AP, comprising: described AP sends described CAC result at all channels.In the embodiment of the present invention, all channels refer to all channels of rules and regulations, and to this, the rules and regulations of various countries are different.Described AP can be sent by modes such as broadcast, multicasts.
Optionally, in the embodiment of the present invention, described AP, when sending described CAC result to other AP, can be switched to successively on each channel in all channels and send.Concrete, described AP is often switched on a channel, just sends described CAC result on this channel.After described AP is sent on one channel, is just switched to next channel and continues to send described CAC result, until travel through all channels.
And, described AP once only can send described CAC result on one channel, or, if there is multiple wireless communication module in described AP, then described AP also can send described CAC result with multiple wireless communication module simultaneously over multiple channels, such transmitting efficiency is higher, saves transmitting time.
Refer to Fig. 2, based on same inventive concept, the embodiment of the present invention provides a kind of message receiving method, and described message receiving method is the method corresponding to described method for sending information.The main flow of described message receiving method is described below.
Step 201: receiving equipment receives the notification message that an AP sends, and carry the mark of the first channel in described notification message, it is the channel that there is radar signal that described notification message indicates the first channel.
Described receiving equipment can be WLAN (wireless local area network) control appliance, and described receiving equipment also can be AP, and certainly, this AP as receiving equipment is different from a described AP.
A described AP carries out CAC to described first channel, after detection, if there is radar signal in described first channel, then a described AP can send described notification message to described receiving equipment, the mark of described first channel can be carried in described notification message, described notification message is described receiving equipment and indicates, and described first channel is the channel that there is radar signal.
Optionally, in the embodiment of the present invention, if described receiving equipment is described WLAN (wireless local area network) control appliance, and as described in Fig. 1 flow process, described WLAN (wireless local area network) control appliance carries out to each AP controlled by described WLAN (wireless local area network) control appliance the control mode controlled completely, then, before the described notification message receiving a described AP transmission, described method also comprises: described WLAN (wireless local area network) control appliance sends a CAC instruction respectively to a described AP and the 2nd AP and the 2nd CAC indicates, the mark of described first channel is carried in a described CAC instruction, the mark of the 3rd channel is carried in described 2nd CAC instruction, a described CAC instruction is used to indicate a described AP and carries out CAC to described first channel, described 2nd CAC instruction is used to indicate described 2nd AP and carries out CAC to described 3rd channel, wherein, described first channel is different from described 3rd channel.Described WLAN (wireless local area network) control appliance can be called a described CAC instruction to the CAC instruction that a described AP sends, the CAC instruction sent to described 2nd AP can be called described 2nd CAC instruction, and the mark that address is not both in order to its channel carried is described is different.Above-mentioned option can need the channel carrying out DFS by parallel detecting two, thus improves DFS efficiency.
Namely, described WLAN (wireless local area network) control appliance is when carrying out to each AP controlled by described WLAN (wireless local area network) control appliance the control mode controlled completely, described WLAN (wireless local area network) control appliance can send CAC instruction to multiple AP, carry the mark of channel in described CAC instruction, described CAC instruction is used to indicate the AP receiving described CAC instruction and carries out CAC to the channel corresponding to the mark of the channel carried in described CAC instruction.
Further, in a radar territory, for a channel, described WLAN (wireless local area network) control appliance can only select an AP to carry out CAC.Thus described WLAN (wireless local area network) control appliance sends to the mark of channel entrained in all CAC instructions of multiple AP different.In in this radar territory, AP quantity is enough, can disposable parallel detecting be all needs the channel carrying out DFS, thus improve DFS efficiency.
Step 202: according to the mark of described first channel, is set to forbid seizure condition by described first channel.
Described receiving equipment is after receiving described notification message, the mark being designated described first channel of the channel carried in described notification message can be determined, the channel corresponding to mark of described first channel is described first channel, then described receiving equipment the state of described first channel can be set to described in forbid taking (English: non-occupancy) state.(English: non-occupancyperiod), the equipment that described receiving equipment or described receiving equipment control can not move to the first channel to forbid that seizure condition represents forbidding the phase that takies.
For example, described receiving equipment is after forbidding seizure condition described in the state of described first channel being set to, unoccupied timer can also be started, unoccupied timer timing value take the phase for forbidding, before described unoccupied timer expiry, if described receiving equipment is AP, AP (hereinafter referred to as the 3rd AP) as receiving equipment can not select and move to described first channel, if described receiving equipment is described WLAN (wireless local area network) control appliance, then described WLAN (wireless local area network) control appliance can not indicate the AP controlled by described WLAN (wireless local area network) control appliance to move to described first channel.
Optionally, in the embodiment of the present invention, if described receiving equipment is described WLAN (wireless local area network) control appliance, and described WLAN (wireless local area network) control appliance is when taking to the AP that described WLAN (wireless local area network) control appliance controls the control mode not exclusively controlled, after forbidding seizure condition described in being set to by described first channel, described method also comprises: described WLAN (wireless local area network) control appliance sends the obturation instruction comprising the mark of described first channel, described obturation instruction be used to indicate the AP receiving described obturation instruction described first channel is set to described in forbid seizure condition.
Described WLAN (wireless local area network) control appliance is broadcasted or inaccessible instruction described in multicast, and that receive described obturation instruction can be all AP that described WLAN (wireless local area network) control appliance controls.Other AP in each AP that described WLAN (wireless local area network) control appliance also can only control to described WLAN (wireless local area network) control appliance except a described AP send described obturation instruction.Receive described obturation instruction AP the state of described first channel can be set to described in forbid seizure condition.
Optionally, in the embodiment of the present invention, if described receiving equipment is WLAN (wireless local area network) control appliance, and the control mode that controls completely taked by described WLAN (wireless local area network) control appliance to each AP that described WLAN (wireless local area network) control appliance controls, then, after described first channel is set to forbid seizure condition, described method also comprises: the AP being operated in described first channel in the AP that described WLAN (wireless local area network) control appliance controls to described WLAN (wireless local area network) control appliance sends the switching instruction comprising the mark of second channel, described switching indicates the AP being used to indicate the described switching instruction of reception to be switched to described second channel, wherein, the state of described second channel is not forbid seizure condition in the record of described WLAN (wireless local area network) control appliance.
Namely, if the control mode controlled completely taked by described WLAN (wireless local area network) control appliance to each AP that described WLAN (wireless local area network) control appliance controls, then for each AP that described WLAN (wireless local area network) control appliance controls, do not need to know which channel and whether there is radar signal, as long as it is selected according to the control of described WLAN (wireless local area network) control appliance and moves to new channel, therefore, described WLAN (wireless local area network) control appliance only needs to control each AP and carries out channel switching.
In the embodiment of the present invention, because the AP that described WLAN (wireless local area network) control appliance controls may have multiple, the AP being operated in described first channel also may have multiple, and therefore, described WLAN (wireless local area network) control appliance all can send described switching instruction to the multiple AP being operated in described first channel.In the switching instruction sent to the multiple AP being operated in described first channel, the mark of entrained channel may identical also possibility difference.As aforementioned, the AP being operated in described first channel in the AP that described WLAN (wireless local area network) control appliance controls sends the switching instruction comprising the mark of second channel, the mark just general reference of second channel here, the mark not representing the channel sent to each AP is identical.Meaning here, the state of described WLAN (wireless local area network) control appliance determination channel forbids the channel of seizure condition described in not being, rear to described WLAN (wireless local area network) control appliance control and the AP being operated in described first channel sends described switchings indicates, in each switching instruction, all carry the mark of channel, the mark possibility of the channel entrained by each switching in instruction is identical also may be different.Receive the described AP switching instruction and according to the described instruction switching instruction, described switching in the channel corresponding to mark of the channel carried in instruction can be switched to.
If described receiving equipment is described 3rd AP, the BSS of described 3rd AP is different from the BSS of a described AP, then, after forbidding seizure condition described in the state of described first channel being set to, described method also comprises: described 3rd AP is switched to the 4th channel; Wherein, the state of described 4th channel is not forbid seizure condition in the record of described 3rd AP.
That is, if by AP control AP, then when by CAC detection, a described AP determines that described first channel exists radar signal, all AP can be notified, after receiving the described notification message of a described AP, the AP of receipt message carries out channel switching, and without the need to reinforming other AP.
Refer to Fig. 3, based on same inventive concept, the embodiment of the present invention provides a kind of AP, and described AP comprises detection module 301 and sending module 302.
Detection module 301 for carrying out CAC to the first channel, to determine whether described first channel exists radar signal;
If sending module 302 exists radar signal for described first channel, then send CAC result to WLAN (wireless local area network) control appliance or to other AP, described CAC result comprises the mark of described first channel.
Optionally, in the embodiment of the present invention, detection module 301 specifically for: receive described WLAN (wireless local area network) control appliance send Indication message, described Indication message is used to indicate described AP and carries out CAC to described first channel; According to the instruction of described Indication message, CAC is carried out to described first channel.
Optionally, in the embodiment of the present invention, sending module 302 specifically for: send described CAC result at all channels.
Optionally, in the embodiment of the present invention, the Basic Service Set BSS of each AP in other AP described is different from the BSS of described AP.
Refer to Fig. 4, based on same inventive concept, the embodiment of the present invention provides a kind of receiving equipment, and described equipment comprises receiver module 401 and arranges module 402.
The notification message that receiver module 401 sends for receiving an AP, carry the mark of the first channel in described notification message, it is the channel that there is radar signal that described notification message indicates the first channel;
Module 402 is set for the mark according to described first channel, described first channel is set to forbid seizure condition.
Optionally, in the embodiment of the present invention, if described receiving equipment is WLAN (wireless local area network) control appliance, described WLAN (wireless local area network) control appliance also comprises sending module, for: after module 402 being set described first channel is set to forbid seizure condition, send comprise the mark of described first channel obturation instruction, described obturation instruction be used to indicate receive described obturation instruction AP described first channel is set to described in forbid seizure condition.
Optionally, in the embodiment of the present invention, if described receiving equipment is WLAN (wireless local area network) control appliance, described WLAN (wireless local area network) control appliance also comprises described sending module, for: after module 402 being set described first channel is set to forbid seizure condition, the AP transmission being operated in described first channel in the AP that described WLAN (wireless local area network) control appliance controls comprises the switching instruction of the mark of second channel, and described switching instruction is used to indicate the AP receiving described switching instruction and is switched to described second channel; Wherein, the state of described second channel is not forbid seizure condition in the record of described WLAN (wireless local area network) control appliance.
Optionally, in the embodiment of the present invention, if described receiving equipment is WLAN (wireless local area network) control appliance, described WLAN (wireless local area network) control appliance also comprises described sending module, for: receive the notification message of an AP transmission at receiver module 401 before, to a described AP and the 2nd AP send respectively the one CAC instruction and the 2nd CAC indicate, the mark of described first channel is carried in a described CAC instruction, the mark of the 3rd channel is carried in described 2nd CAC instruction, a described CAC instruction is used to indicate a described AP and carries out CAC to described first channel, described 2nd CAC instruction is used to indicate described 2nd AP and carries out CAC to described 3rd channel, wherein, described first channel is different from described 3rd channel.
Optionally, in the embodiment of the present invention, if described receiving equipment is AP, be herein referred to as the 3rd AP, the BSS of described 3rd AP is different from the BSS of a described AP, described 3rd AP also comprises handover module, for: after module 402 being set described first channel is set to forbid seizure condition, be switched to the 4th channel; Wherein, the state of described 4th channel is not forbid seizure condition in the record of described 3rd AP.
Refer to Fig. 5, based on same inventive concept, the embodiment of the present invention provides a kind of AP, described AP comprises processor 501, wired network interface controller is (English: networkinterfacecontroller, abbreviation: NIC) 502, radio network interface controller (English: wirelessnetworkinterfacecontroller, abbreviation: WNIC) 503 and memory 504.Processor 501 is connected with wired network interface controller 502 by bus.Processor 501 is connected with radio network interface controller 503 by bus.Processor 501 is connected with memory 504 by bus.Wherein, described bus is represented with adding thick lines in Fig. 5.And be connected to a bus for processor 501, wired network interface controller 502, radio network interface controller 503 and memory 504 in Fig. 5, but the bus that bus, processor 501 that in fact, processor 501 is connected with wired network interface controller 502 are connected with radio network interface controller 503 and the bus that processor 501 is connected with memory 504 also can be different buses.
Processor 501 can be central processing unit (English: centralprocessingunit, abbreviation: CPU), also can be the combination of CPU and hardware chip.Above-mentioned hardware chip can be one or more combination following: application-specific integrated circuit (ASIC) is (English: application-specificintegratedcircuit, abbreviation: ASIC), field programmable gate array is (English: field-programmablegatearray, abbreviation: FPGA), CPLD is (English: complexprogrammablelogicdevice, abbreviation: CPLD) and network processing unit (English: networkprocessor, abbreviation: NP).
This program code transfer for program code stored, and is given this processor 501 by memory 504.Memory 504 can comprise volatile memory, and (English: volatilememory), such as (English: random-accessmemory, abridges: RAM) random access memory; It is (English: non-volatilememory) that memory also can comprise nonvolatile memory, such as read-only memory is (English: read-onlymemory, abbreviation: ROM), flash memory is (English: flashmemory), hard disk is (English: harddiskdrive, abbreviation: HDD) or solid state hard disc (English: solid-statedrive, abbreviation: SSD); Memory can also comprise the combination of the memory of mentioned kind.
Processor 501 is for carrying out CAC to the first channel, to determine whether described first channel exists radar signal, and, if there is radar signal in described first channel, then send CAC result by described wired network interface controller 502 to WLAN (wireless local area network) control appliance, or send CAC result by described radio network interface controller 503 to other AP; Described CAC result comprises the mark of described first channel.
Optionally, in the embodiment of the present invention, processor 501 specifically for: by wired network interface controller 502 receive described WLAN (wireless local area network) control appliance send Indication message, described Indication message is used to indicate described AP and carries out CAC to described first channel; According to the instruction of described Indication message, CAC is carried out to described first channel.
Optionally, in the embodiment of the present invention, processor 501 specifically for: send described CAC result by radio network interface controller 503 at all channels.
Optionally, in the embodiment of the present invention, the Basic Service Set BSS of each AP in other AP described is different from the BSS of described AP.
Optionally, in the embodiment of the present invention, the notification message that processor 501 is sent for being received an AP by radio network interface controller 503, carry the mark of the first channel in described notification message, it is the channel that there is radar signal that described notification message indicates the first channel; Described first channel, for the mark according to described first channel, is set to forbid seizure condition by processor 501.
Optionally, in the embodiment of the present invention, processor 501 for: after described first channel is set to forbid seizure condition, be switched to the 4th channel; Wherein, the state of described 4th channel is not forbid seizure condition in the record of described AP; The BSS of described AP is different from the BSS of a described AP.
Refer to Fig. 6, based on same inventive concept, the embodiment of the present invention provides a kind of AP, and described AP comprises processor 601, network interface controller 602 and memory 603.Processor 601 is connected with network interface controller 602 by bus.Processor 601 is connected with memory 603 by bus.Wherein, described bus is represented with adding thick lines in Fig. 6.And be connected to a bus for processor 601, network interface controller 602 and memory 603 in Fig. 6, but the bus that in fact, the bus that is connected with network interface controller 602 of processor 601 and processor 601 are connected with memory 603 also can be different bus.
Processor 601 can be CPU, also can be the combination of CPU and hardware chip.Above-mentioned hardware chip can be one or more combination following: application-specific integrated circuit (ASIC), field programmable gate array, CPLD and network processing unit.
This program code transfer for program code stored, and is given this processor 601 by memory 603.Memory 603 can comprise volatile memory, such as random access memory; Memory also can comprise nonvolatile memory, such as read-only memory, flash memory, hard disk or solid state hard disc; Memory can also comprise the combination of the memory of mentioned kind.
The notification message that processor 601 is sent for being received an AP by network interface controller 602, carry the mark of the first channel in described notification message, it is the channel that there is radar signal that described notification message indicates the first channel; And, according to the mark of described first channel, described first channel is set to forbid seizure condition.
Optionally, in the embodiment of the present invention, processor 601 is for after being set to forbid seizure condition by described first channel, by network interface controller 602 send comprise the mark of described first channel obturation instruction, described obturation instruction be used to indicate receive described obturation instruction AP described first channel is set to described in forbid seizure condition.
Optionally, in the embodiment of the present invention, processor 601 is for after being set to forbid seizure condition by described first channel, the AP being operated in described first channel in the AP controlled to described WLAN (wireless local area network) control appliance by network interface controller 602 sends the switching instruction comprising the mark of second channel, describedly switches instruction and is used to indicate and receives the described AP switching instruction and be switched to described second channel; Wherein, the state of described second channel is not forbid seizure condition in the record of described WLAN (wireless local area network) control appliance.
Optionally, in the embodiment of the present invention, processor 601 is for before the notification message being received an AP transmission by network interface controller 602, by network interface controller 602 to a described AP and the 2nd AP send respectively the one CAC instruction and the 2nd CAC indicate, the mark of described first channel is carried in a described CAC instruction, the mark of the 3rd channel is carried in described 2nd CAC instruction, a described CAC instruction is used to indicate a described AP and carries out CAC to described first channel, described 2nd CAC instruction is used to indicate described 2nd AP and carries out CAC to described 3rd channel, wherein, described first channel is different from described 3rd channel.
Refer to Fig. 7, based on same inventive concept, the embodiment of the present invention provides a kind of AP, and described AP comprises processor 701, wired network interface controller 702, radio network interface controller 703 and memory 704.Processor 701 is connected with wired network interface controller 702 by bus.Processor 701 is connected with radio network interface controller 703 by bus.Processor 701 is connected with memory 704 by bus.Wherein, described bus is represented with adding thick lines in Fig. 7.AP shown in AP and Fig. 5 shown in Fig. 7 can be same AP.And be connected to a bus for processor 701, wired network interface controller 702, radio network interface controller 703 and memory 704 in Fig. 7, but the bus that bus, processor 701 that in fact, processor 701 is connected with wired network interface controller 702 are connected with radio network interface controller 703 and the bus that processor 701 is connected with memory 704 also can be different buses.
Processor 701 can be CPU, also can be the combination of CPU and hardware chip.Above-mentioned hardware chip can be one or more combination following: application-specific integrated circuit (ASIC), field programmable gate array, CPLD and network processing unit.
This program code transfer for program code stored, and is given this processor 701 by memory 704.Memory 704 can comprise volatile memory, such as random access memory; Memory 704 also can comprise nonvolatile memory, such as read-only memory, flash memory, hard disk or solid state hard disc; Memory 704 can also comprise the combination of the memory of mentioned kind.
The notification message that processor 701 is sent for being received an AP by radio network interface controller 703, carry the mark of the first channel in described notification message, it is the channel that there is radar signal that described notification message indicates the first channel; And, according to the mark of described first channel, described first channel is set to forbid seizure condition.
Optionally, in the embodiment of the present invention, processor 701 for: after described first channel is set to forbid seizure condition, be switched to the 4th channel; Wherein, the state of described 4th channel is not forbid seizure condition in the record of described AP; The BSS of described AP is different from the BSS of a described AP.
The embodiment of the present invention provides a kind of method for sending information, and described method comprises: access point carries out CAC to the first channel, to determine whether described first channel exists radar signal; If described first channel exists radar signal, then described AP sends CAC result to WLAN (wireless local area network) control appliance or to other AP, and described CAC result comprises the mark of described first channel.
In the embodiment of the present invention, if described AP detection determines that described first channel exists radar signal, then can send described CAC result to described WLAN (wireless local area network) control appliance or other AP, described WLAN (wireless local area network) control appliance or other AP described just can know described first channel and there is radar signal after receiving described CAC result, like this, described WLAN (wireless local area network) control appliance or other AP described if desired select new channel, described first channel would not be considered, ensure that described WLAN (wireless local area network) control appliance or other AP described can choose the channel that there is not radar signal quickly as far as possible, decrease described WLAN (wireless local area network) control appliance or other AP described and the time that radar detection spends is carried out to channel.
Those skilled in the art can be well understood to, for convenience and simplicity of description, only be illustrated with the division of above-mentioned each functional module, in practical application, can distribute as required and by above-mentioned functions and be completed by different functional modules, internal structure by device is divided into different functional modules, to complete all or part of function described above.The system of foregoing description, the specific works process of device and module, with reference to the corresponding process in preceding method embodiment, can not repeat them here.
In several embodiments that the application provides, should be understood that, disclosed system, apparatus and method, can realize by another way.Such as, device embodiment described above is only schematic, such as, the division of described module or unit, be only a kind of logic function to divide, actual can have other dividing mode when realizing, such as multiple unit or assembly can in conjunction with or another system can be integrated into, or some features can be ignored, or do not perform.
The described unit illustrated as separating component or can may not be and physically separates, and the parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed in multiple network element.Some or all of unit wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.
In addition, each functional unit in each embodiment of the application can be integrated in a processing unit, also can be that the independent physics of unit exists, also can two or more unit in a unit integrated.Above-mentioned integrated unit both can adopt the form of hardware to realize, and the form of SFU software functional unit also can be adopted to realize.
If described integrated unit using the form of SFU software functional unit realize and as independently production marketing or use time, can be stored in a computer read/write memory medium.The all or part of of technical scheme of the application can embody with the form of software product, this computer software product is stored in a storage medium, described storage medium is that non-transience is (English: non-transitory) medium, comprises all or part of step of some instructions in order to make processor (processor) perform method described in each embodiment of the application.And aforesaid storage medium comprises: random access memory, read-only memory, flash memory, hard disk, solid state hard disc, (English: magnetictape), (English: floppydisk), CD is (English: opticaldisc) and combination in any for floppy disk for tape.
The above, above embodiment is only in order to be described in detail the technical scheme of the application, but the explanation of above embodiment just understands the present invention for helping, and should not be construed as limitation of the present invention.Those skilled in the art are in the technical scope that the present invention discloses, and the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.
Claims (18)
1. a method for sending information, is characterized in that, comprising:
Access point AP carries out channel availability to the first channel and checks CAC, to determine whether described first channel exists radar signal;
If described first channel exists radar signal, then described AP sends CAC result to WLAN (wireless local area network) control appliance or to other AP, and described CAC result comprises the mark of described first channel.
2. the method for claim 1, is characterized in that, access point AP carries out CAC to the first channel, comprising:
Described AP receives the Indication message that described WLAN (wireless local area network) control appliance sends, and described Indication message is used to indicate described AP and carries out CAC to described first channel;
Described AP, according to the instruction of described Indication message, carries out CAC to described first channel.
3. the method for claim 1, is characterized in that, described AP sends described CAC result to other AP, comprising: described AP sends described CAC result at all channels.
4. the method as described in claim 1 or 3, is characterized in that, the Basic Service Set BSS of each AP in other AP described is different from the BSS of described AP.
5. a message receiving method, is characterized in that, comprising:
Receiving equipment receives the notification message that the first access point AP sends, and carry the mark of the first channel in described notification message, it is the channel that there is radar signal that described notification message indicates the first channel;
Described first channel, according to the mark of described first channel, is set to forbid seizure condition by described receiving equipment.
6. method as claimed in claim 5, it is characterized in that, described receiving equipment is WLAN (wireless local area network) control appliance, and after described first channel is set to forbid seizure condition, described method also comprises:
Described WLAN (wireless local area network) control appliance sends the obturation instruction comprising the mark of described first channel, described obturation instruction be used to indicate the AP receiving described obturation instruction described first channel is set to described in forbid seizure condition.
7. method as claimed in claim 5, it is characterized in that, described receiving equipment is WLAN (wireless local area network) control appliance, and after described first channel is set to forbid seizure condition, described method also comprises:
The AP being operated in described first channel in the AP that described WLAN (wireless local area network) control appliance controls to described WLAN (wireless local area network) control appliance sends the switching instruction comprising the mark of second channel, describedly switches instruction and is used to indicate and receives the described AP switching instruction and be switched to described second channel;
Wherein, the state of described second channel is not forbid seizure condition in the record of described WLAN (wireless local area network) control appliance.
8. the method as described in as arbitrary in claim 5-7, it is characterized in that, described receiving equipment is WLAN (wireless local area network) control appliance, before the notification message that reception the one AP sends, described method also comprises: described WLAN (wireless local area network) control appliance sends the first channel availability respectively to a described AP and the 2nd AP and checks that CAC instruction and the 2nd CAC indicate, the mark of described first channel is carried in a described CAC instruction, the mark of the 3rd channel is carried in described 2nd CAC instruction, a described CAC instruction is used to indicate a described AP and carries out CAC to described first channel, described 2nd CAC instruction is used to indicate described 2nd AP and carries out CAC to described 3rd channel, wherein, described first channel is different from described 3rd channel.
9. method as claimed in claim 5, it is characterized in that, described receiving equipment is the 3rd AP, the Basic Service Set BSS of described 3rd AP is different from the BSS of a described AP, after described first channel is set to forbid seizure condition, described method also comprises: described 3rd AP is switched to the 4th channel; Wherein, the state of described 4th channel is not forbid seizure condition in the record of described 3rd AP.
10. an access point AP, is characterized in that, comprising:
Detection module, checks CAC, to determine whether described first channel exists radar signal for carrying out channel availability to the first channel;
Sending module, if there is radar signal for described first channel, then send CAC result to WLAN (wireless local area network) control appliance or to other AP, described CAC result comprises the mark of described first channel.
11. AP as claimed in claim 10, is characterized in that, described detection module specifically for: receive described WLAN (wireless local area network) control appliance send Indication message, described Indication message is used to indicate described AP and carries out CAC to described first channel; According to the instruction of described Indication message, CAC is carried out to described first channel.
12. AP as claimed in claim 10, is characterized in that, described sending module specifically for: send described CAC result at all channels.
13. AP as described in claim 10 or 12, it is characterized in that, the Basic Service Set BSS of each AP in other AP described is different from the BSS of described AP.
14. 1 kinds of receiving equipments, is characterized in that, comprising:
Receiver module, for receiving the notification message that the first access point AP sends, carry the mark of the first channel in described notification message, it is the channel that there is radar signal that described notification message indicates the first channel;
Module is set, for the mark according to described first channel, described first channel is set to forbid seizure condition.
15. equipment as claimed in claim 14, it is characterized in that, described receiving equipment is WLAN (wireless local area network) control appliance, described WLAN (wireless local area network) control appliance also comprises sending module, for: arrange after described first channel is set to forbid seizure condition by module described, send comprise the mark of described first channel obturation instruction, described obturation instruction be used to indicate receive described obturation instruction AP described first channel is set to described in forbid seizure condition.
16. equipment as claimed in claim 14, it is characterized in that, described receiving equipment is WLAN (wireless local area network) control appliance, described WLAN (wireless local area network) control appliance also comprises sending module, for: arrange after described first channel is set to forbid seizure condition by module described, the AP transmission being operated in described first channel in the AP that described WLAN (wireless local area network) control appliance controls comprises the switching instruction of the mark of second channel, and described switching instruction is used to indicate the AP receiving described switching instruction and is switched to described second channel; Wherein, the state of described second channel is not forbid seizure condition in the record of described WLAN (wireless local area network) control appliance.
17. as arbitrary in claim 14-16 as described in equipment, it is characterized in that, described receiving equipment is WLAN (wireless local area network) control appliance, described WLAN (wireless local area network) control appliance also comprises sending module, for: receive the notification message of an AP transmission at described receiver module before, send the first channel availability respectively to a described AP and the 2nd AP and check that CAC instruction and the 2nd CAC indicate, the mark of described first channel is carried in a described CAC instruction, the mark of the 3rd channel is carried in described 2nd CAC instruction, a described CAC instruction is used to indicate a described AP and carries out CAC to described first channel, described 2nd CAC instruction is used to indicate described 2nd AP and carries out CAC to described 3rd channel, wherein, described first channel is different from described 3rd channel.
18. equipment as claimed in claim 14, it is characterized in that, described receiving equipment is the 3rd AP, the Basic Service Set BSS of described 3rd AP is different from the BSS of a described AP, described 3rd AP also comprises handover module, for: arrange after described first channel is set to forbid seizure condition by module described, be switched to the 4th channel; Wherein, the state of described 4th channel is not forbid seizure condition in the record of described 3rd AP.
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Application publication date: 20160203 |