CN106535293A

CN106535293A - Active scan processing method and related device and communication system

Info

Publication number: CN106535293A
Application number: CN201510570574.7A
Authority: CN
Inventors: 林英沛; 苏宏家
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2015-09-09
Filing date: 2015-09-09
Publication date: 2017-03-22
Anticipated expiration: 2035-09-09
Also published as: CN106535293B; WO2017041629A1

Abstract

The embodiment of the invention discloses an active scan processing method and a related device and a communication system. The active scan processing method comprises the following steps: an access point receives a probe request frame sent by a site on a first available channel; the access point sends a probe response frame corresponding to the probe request frame on one sub-channel of multiple sub-channels of the first available channel; and the access point receives an acknowledgement frame which is sent by the site for the probe response frame on the first available channel. The technical scheme provided by the embodiment of the invention is beneficial to reducing the competitive collision times among the access points; and thus, the competitive expenses and the communication resource waste are reduced, and the system overall performance is improved.

Description

Active scan processing method and relevant apparatus and communication system

Technical field

The present invention relates to radio network technique field, and in particular to active scan processing method and relevant apparatus with And communication system.

Background technology

Website (STA) will become the member of a Wi-Fi wireless network, STA be accomplished by Wi-Fi without Gauze network is scanned.Under existing 802.11 framework of Wi-Fi standard IEEEs, there are drive sweep and active Scanning both patterns is available for STA to select to be scanned Wi-Fi wireless networks.

Under a passive scanning mode STA need under each channel scanning for beacon frame (Beacon frames), Beacon The information for containing wireless network in frame is accessed for STA.Under active scan mode, STA actively sends Probe requests thereby (Probe Request) frame, when access point (AP, Access Point) is received from STA Request after, in the case where condition meets, AP can agree to the request of STA, and AP can be to STA Reply probe response (Probe Response) frame.Specifically, AP intercepts channel status, when channel keeps The duration of idle condition exceedes distributed inter-frame space (DIFS, Distributed Inter-frame Space) Duration, proceeds by and keeps out of the way, until idle time of channel keeps out of the way timing to 0 more than duration is always kept out of the way When AP competitive channel successes.AP sends Probe Response frames to STA, receives Probe Response The STA of frame replys acknowledgement frame (ACK frames) to AP again.

The present inventor has found that in research and practice process existing Wi-Fi technology is due to adopting carrier wave Multiple access (CSMA, Carrier Sense MultipleAccess) mechanism is intercepted, in active scan mode Lower AP need to be at war with to send Probe Response frames to whole channel.But in dense deployment scene Under adjacent AP and STA numbers it is all a lot, as the AP numbers for participating in competition may be very big, this causes Compete collision frequency to increase between AP, and then increase competition expense and communication resource waste, may make Obtaining systematic entirety can reduce.

The content of the invention

The embodiment of the present invention provides active scan processing method and relevant apparatus and communication system, to can Reduce between AP, competing collision frequency, and then reduce competition expense and communication resource waste, and then lift system System overall performance.

Embodiment of the present invention first aspect provides a kind of active scan processing method, including：

The probe request that access point is sent in the first available channel receiving station；

Described access point sends institute in wherein 1 sub-channels of many sub-channels of first available channel State the corresponding probing response frame of probe request；

Described access point receives the website in first available channel and sends for the probing response frame Acknowledgement frame.

With reference in a first aspect, in the first possible embodiment of first aspect, described access point is in institute The wherein 1 sub-channels transmission probe request for stating many sub-channels of the first available channel is corresponding Probing response frame includes：Described access point randomly chooses which in many sub-channels of first available channel In 1 sub-channels send the corresponding probing response frame of the probe request.

With reference to the first possible embodiment of first aspect or first aspect, at second of first aspect In possible embodiment, the probe request carries subchannel and divides instruction；

Send in wherein 1 sub-channels of many sub-channels of first available channel in described access point Before the corresponding probing response frame of the probe request, methods described also includes：Described access point is based on institute State subchannel division to indicate for first available channel to be divided into many sub-channels.

With reference to the first possible embodiment of first aspect or first aspect, first aspect the third In possible embodiment, described access point first available channel many sub-channels wherein 1 Before sub-channels send the corresponding probing response frame of the probe request, methods described also includes：It is described First available channel is divided into many sub-channels based on protocol configuration information by access point.

With reference to first aspect or first aspect the first to any one in the third possible embodiment Possible embodiment, in the 4th kind of possible embodiment of first aspect, the probe request is taken The value of the basic service unit color fields of band is arranged to asterisk wildcard or specified color values, described basic Service unit color fields are used for indicating basic service unit.

With reference to the 4th kind of possible embodiment of first aspect, in the 5th kind of possible enforcement of first aspect In mode, the high efficiency that the basic service unit color fields are carried at the probe request is leading In the efficient signaling-A fields of code or efficient signaling-B field.

With reference to the 4th kind of possible embodiment or the 5th kind of possible enforcement of first aspect of first aspect Mode, in the 6th kind of possible embodiment of first aspect, if the basic service of the probe request The value of unit color fields is arranged to specify color values, then described access point is and the specified color It is worth corresponding access point.

With reference to first aspect or first aspect the first to any one in the 6th kind of possible embodiment Possible embodiment, in the 7th kind of possible embodiment of first aspect, described access point is described First available channel receives the website to be included for the acknowledgement frame that the probing response frame sends：The access Point receives the website on first available channel with OFDM in first available channel The acknowledgement frame for the probing response frame that mode or multicast mode or broadcast mode send.

With reference to first aspect or first aspect the first to any one in the 7th kind of possible embodiment Possible embodiment, in the 8th kind of possible embodiment of first aspect,

Methods described also includes：

Described access point receives the probe request that the website sends in the second available channel；

Described access point sends institute in wherein 1 sub-channels of many sub-channels of second available channel State the corresponding probing response frame of probe request；

Described access point receives the website in second available channel and sends for the probing response frame Acknowledgement frame.

Embodiment of the present invention second aspect provides a kind of active scan processing method, including：

Website sends probe request in the first available channel；

The website receives many height of the access point in first available channel in first available channel The corresponding probing response frame of the probe request that wherein 1 sub-channels of channel send；

The website sends the acknowledgement frame for the probing response frame in first available channel.

It is with reference to second aspect, in the first possible embodiment of second aspect, described described first Available channel receives access point and sends out in wherein 1 sub-channels of many sub-channels of first available channel The corresponding probing response frame of the probe request for sending includes：Access point is received in first available channel The detection that randomly selected 1 sub-channels send in many sub-channels of first available channel The corresponding probing response frame of claim frame.

With reference to the first possible embodiment of second aspect or second aspect, at second of second aspect In possible embodiment, the probe request carries subchannel and divides instruction, wherein, the sub- letter Road is divided and is indicated for indicating that first available channel is divided into many sub-channels by described access point.

With reference to second aspect or second aspect the first possible embodiment or second of second aspect Possible embodiment, in the third possible embodiment of second aspect, the probe request is taken The value of the basic service unit color fields of band is arranged to asterisk wildcard or specified color values, described basic Service unit color fields are used for indicating basic service unit.

With reference to the third possible embodiment of second aspect, in the 4th kind of possible enforcement of second aspect In mode, the high efficiency that the basic service unit color fields are carried at the probe request is leading In the efficient signaling-A fields of code or efficient signaling-B field.

With reference to the third possible embodiment or the 4th kind of possible enforcement of second aspect of second aspect Mode, in the 5th kind of possible embodiment of second aspect, if the basic service of the probe request The value of unit color fields is arranged to specify color values, then described access point is and the specified color It is worth corresponding access point.

With reference to second aspect or second aspect the first to any one in the 5th kind of possible embodiment Possible embodiment, in the 6th kind of possible embodiment of second aspect, the website is described One available channel sends the acknowledgement frame for the probing response frame, including：The website can described first Rung for the detection with what OFDM mode or multicast mode or broadcast mode sent with channel Answer the acknowledgement frame of frame.

With reference to second aspect or second aspect the first to any one in the 6th kind of possible embodiment Possible embodiment, in the 7th kind of possible embodiment of second aspect,

Methods described also includes：

The website sends the probe request in the second available channel；The website is available described second Channel receive access point many sub-channels of second available channel wherein 1 sub-channels send The corresponding probing response frame of the probe request；The website is sent for institute in second available channel State the acknowledgement frame of probing response frame.

Third aspect present invention provides a kind of access point, including：

Receiving unit, for the probe request sent in the first available channel receiving station；

Transmitting element, wherein 1 sub-channels for many sub-channels in first available channel send The corresponding probing response frame of the probe request；

The receiving unit is additionally operable to, and receives the website in first available channel and rings for the detection The acknowledgement frame for answering frame to send.

With reference to the third aspect, in the first possible embodiment of the third aspect, the transmitting element tool Body sends institute for randomly choosing wherein 1 sub-channels in many sub-channels of first available channel State the corresponding probing response frame of probe request.

With reference to the first possible embodiment of the third aspect or the third aspect, at second of the third aspect In possible embodiment, the probe request carries subchannel and divides instruction；Described access point is also wrapped Channels determining unit is included, it is many for being divided into first available channel based on subchannel division instruction Sub-channels.

With reference to the first possible embodiment of the third aspect or the third aspect, the third aspect the third In possible embodiment, described access point also includes channels determining unit, for based on protocol configuration information First available channel is divided into into many sub-channels.

With reference to the third aspect or the third aspect the first to any one in the third possible embodiment Possible embodiment, in the 4th kind of possible embodiment of the third aspect, the probe request is taken The value of the basic service unit color fields of band is arranged to asterisk wildcard or specified color values, described basic Service unit color fields are used for indicating basic service unit.

With reference to the 4th kind of possible embodiment of the third aspect, in the 5th kind of possible enforcement of the third aspect In mode, the high efficiency that the basic service unit color fields are carried at the probe request is leading In the efficient signaling-A fields of code or efficient signaling-B field.

With reference to the 4th kind of possible embodiment or the 5th kind of possible enforcement of the third aspect of the third aspect Mode, in the 6th kind of possible embodiment of the third aspect, if the basic service of the probe request The value of unit color fields is arranged to specify color values, then described access point is and the specified color It is worth corresponding access point.

With reference to the third aspect or the third aspect the first to any one in the 6th kind of possible embodiment Possible embodiment, in the 7th kind of possible embodiment of the third aspect, in the described first available letter Road receives the aspect of the acknowledgement frame that the website is sent for the probing response frame, and the receiving unit is concrete For receiving the website in first available channel many with orthogonal frequency on first available channel The acknowledgement frame for the probing response frame that location mode or multicast mode or broadcast mode send.

With reference to the third aspect or the third aspect the first to any one among the 7th kind of possible embodiment Possible embodiment is planted, in the 8th kind of possible embodiment of the third aspect, the receiving unit is also For receiving the probe request that the website sends in the second available channel；

The transmitting element is used for, in wherein 1 sub-channels of many sub-channels of second available channel Send the corresponding probing response frame of the probe request；

The receiving unit is additionally operable to, and receives the website in second available channel and rings for the detection The acknowledgement frame for answering frame to send.

Fourth aspect present invention provides a kind of website, including：

Transmitting element, for sending probe request in the first available channel；

Receiving unit, for receiving access point in many of first available channel in first available channel The corresponding probing response frame of the probe request that wherein 1 sub-channels of sub-channels send；

The transmitting element is additionally operable to, and sends for the probing response frame really in first available channel Recognize frame.

It is with reference to fourth aspect, in the first possible embodiment of fourth aspect, described described first Available channel receives access point and sends out in wherein 1 sub-channels of many sub-channels of first available channel The corresponding probing response frame of the probe request for sending includes：Access point is received in first available channel The detection that randomly selected 1 sub-channels send in many sub-channels of first available channel The corresponding probing response frame of claim frame.

With reference to the first possible embodiment of fourth aspect or fourth aspect, at second of fourth aspect In possible embodiment, the probe request carries subchannel and divides instruction, wherein, the sub- letter Road is divided and is indicated for indicating that first available channel is divided into many sub-channels by described access point.

With reference to fourth aspect or fourth aspect the first possible embodiment or second of fourth aspect Possible embodiment, in the third possible embodiment of fourth aspect, the probe request is taken The value of the basic service unit color fields of band is arranged to asterisk wildcard or specified color values, described basic Service unit color fields are used for indicating basic service unit.

With reference to the third possible embodiment of fourth aspect, in the 4th kind of possible enforcement of fourth aspect In mode, the high efficiency that the basic service unit color fields are carried at the probe request is leading In the efficient signaling-A fields of code or efficient signaling-B field.

With reference to the third possible embodiment or the 4th kind of possible enforcement of fourth aspect of fourth aspect Mode, in the 5th kind of possible embodiment of fourth aspect, if the basic service of the probe request The value of unit color fields is arranged to specify color values, then described access point is and the specified color It is worth corresponding access point.

With reference to fourth aspect or fourth aspect the first to any one in the 5th kind of possible embodiment Possible embodiment, in the 6th kind of possible embodiment of fourth aspect, it is described can described first The aspect of the acknowledgement frame for the probing response frame is sent with channel：Transmitting element is specifically for described On one available channel with OFDM mode or multicast mode or broadcast mode send for the spy Survey the acknowledgement frame of response frame.

With reference to fourth aspect or fourth aspect the first to any one in the 6th kind of possible embodiment Possible embodiment, in the 7th kind of possible embodiment of fourth aspect, the transmitting element is also used In in the second available channel transmission probe request；

Wherein, the receiving unit is additionally operable to, and receives access point described second in second available channel The corresponding detection of the probe request that wherein 1 sub-channels of many sub-channels of available channel send Response frame；

The transmitting element is additionally operable to, and sends for the probing response frame really in second available channel Recognize frame.

Fifth aspect present invention provides a kind of access point, including：

Processor, memorizer and antenna；

Wherein, it is used for performing by calling the instruction or code that store in the memorizer, the processor Following steps：

The probe request sent in the first available channel receiving station by the antenna；By the antenna The probe request pair is sent in wherein 1 sub-channels of many sub-channels of first available channel The probing response frame answered；The website is received in first available channel by the antenna and is directed to the spy Survey the acknowledgement frame that response frame sends.

In terms of the 5th, in the first the possible embodiment in terms of the 5th, the process implement body Send described for randomly choosing wherein 1 sub-channels in many sub-channels of first available channel The corresponding probing response frame of probe request.

With reference to the first the possible embodiment in terms of the 5th or in terms of the 5th, second in terms of the 5th In possible embodiment, the probe request carries subchannel and divides instruction；The processor is also used Indicate for first available channel to be divided into many sub-channels in dividing based on the subchannel.

With reference to the first the possible embodiment in terms of the 5th or in terms of the 5th, the third in terms of the 5th In possible embodiment, described access point also includes channels determining unit, for based on protocol configuration information First available channel is divided into into many sub-channels.

With reference to the first in terms of the 5th or in terms of the 5th to any one in the third possible embodiment Possible embodiment, in the 4th kind of possible embodiment in terms of the 5th, the probe request is taken The value of the basic service unit color fields of band is arranged to asterisk wildcard or specified color values, described basic Service unit color fields are used for indicating basic service unit.

With reference to the 4th kind of possible embodiment in terms of the 5th, the possible enforcement of the 5th in terms of the 5th kind In mode, the high efficiency that the basic service unit color fields are carried at the probe request is leading In the efficient signaling-A fields of code or efficient signaling-B field.

With reference to the 5th kind of possible enforcement in terms of the 4th kind of possible embodiment or the 5th in terms of the 5th Mode, in the 6th kind of possible embodiment in terms of the 5th, if the basic service of the probe request The value of unit color fields is arranged to specify color values, then described access point is and the specified color It is worth corresponding access point.

With reference to the first in terms of the 5th or in terms of the 5th to any one in the 6th kind of possible embodiment Possible embodiment, among the 7th kind of possible embodiment in terms of the 5th, the process implement body For receiving the website on first available channel by the antenna in first available channel With OFDM mode or multicast mode or broadcast mode send for the probing response frame really Recognize frame.

With reference to the first in terms of the 5th or in terms of the 5th to any one among the 7th kind of possible embodiment Possible embodiment is planted, in the 8th kind of possible embodiment in terms of the 5th, the processor is also used In the probe request for receiving the website transmission by the antenna in the second available channel；By institute The wherein 1 sub-channels transmission detection that antenna is stated in many sub-channels of second available channel is asked Seek the corresponding probing response frame of frame；The website is received by the antenna in second available channel to be directed to The acknowledgement frame that the probing response frame sends.

Sixth aspect present invention provides a kind of website, including：

Processor, memorizer and antenna；

Wherein, it is used for performing by calling the instruction or code that store in the memorizer, the processor Following steps：Probe request is sent in the first available channel by the antenna；By the antenna in institute Stating the first available channel, to receive access point at wherein 1 of many sub-channels of first available channel The corresponding probing response frame of the probe request that channel sends；It is available described first by the antenna Channel sends the acknowledgement frame for the probing response frame.

In terms of the 6th, in the first the possible embodiment in terms of the 6th, the processor is used for Many height of the access point in first available channel are received in first available channel by the antenna The corresponding probing response frame of the probe request that randomly selected 1 sub-channels send in channel.

With reference to the first the possible embodiment in terms of the 6th or in terms of the 6th, second in terms of the 6th In possible embodiment, the probe request carries subchannel and divides instruction, wherein, the sub- letter Road is divided and is indicated for indicating that first available channel is divided into many sub-channels by described access point.

With reference to second in terms of the first the possible embodiment or the 6th in terms of the 6th or in terms of the 6th Possible embodiment, in the third the possible embodiment in terms of the 6th, the probe request is taken The value of the basic service unit color fields of band is arranged to asterisk wildcard or specified color values, described basic Service unit color fields are used for indicating basic service unit.

With reference to the third the possible embodiment in terms of the 6th, the possible enforcement of the 4th in terms of the 6th kind In mode, the high efficiency that the basic service unit color fields are carried at the probe request is leading In the efficient signaling-A fields of code or efficient signaling-B field.

With reference to the 4th kind of possible enforcement in terms of the third the possible embodiment or the 6th in terms of the 6th Mode, in the 5th kind of possible embodiment in terms of the 6th, if the basic service of the probe request The value of unit color fields is arranged to specify color values, then described access point is and the specified color It is worth corresponding access point.

With reference to the first in terms of the 6th or in terms of the 6th to any one in the 5th kind of possible embodiment Possible embodiment, in the 6th kind of possible embodiment in terms of the 6th, the processor is used for leading to The antenna is crossed on first available channel with OFDM mode or multicast mode or broadcaster The acknowledgement frame for the probing response frame that formula sends.

With reference to the first in terms of the 6th or in terms of the 6th to any one in the 6th kind of possible embodiment Possible embodiment, in the 7th kind of possible embodiment in terms of the 6th, the processor is additionally operable to The probe request is sent in the second available channel by the antenna；By the antenna described second Available channel receives access point and sends out in wherein 1 sub-channels of many sub-channels of second available channel The corresponding probing response frame of the probe request for sending；Sent out in second available channel by the antenna Send the acknowledgement frame for the probing response frame.

Seventh aspect present invention provides a kind of communication system, it is characterised in that include：

Such as any one access point provided in an embodiment of the present invention, also include such as provided in an embodiment of the present invention Anticipate a kind of website.

As can be seen that in embodiment of the present invention scheme, as available channel (such as the first available channel) can quilt Logical partitioning be many sub-channels, AP the first available channel receive STA send Probe Request After frame, the Probe Request are sent in wherein 1 sub-channels of many sub-channels of the first available channel The corresponding Probe Response frames of frame, even if therefore have multiple AP to send out in identical available channel under certain scene Send Probe Response frames, then if multiple AP are the differences in identical available channel in the same period Subchannel sends Probe Response frames, and that is advantageous for avoiding the competition of this multiple AP to collide.It can be seen that The present embodiment such scheme introduces AP can be wherein the 1 of the available channel for receiving Probe Request frames Sub-channels reply the innovation mechanism of corresponding Probe Response frames, and this innovation mechanism is considered as one kind The Probe Response frames of similar asymmetric reply mechanism, and this mechanism is relative to conventional symmetrical formula Probe Response frames reply mechanism (wherein, in traditional symmetrical expression Probe Response frame links-and-links machines In system, AP receives Probe Request frames in whole available channel and replys corresponding in whole available channel Probe Response frames.Receiving frame is symmetrical in bandwidth) for, advantageously reduce competing between AP Collision frequency is striven, and then advantageously reduces competition expense and communication resource waste, and then be conducive to being lifted wirelessly Systematic entirety energy.

Description of the drawings

In order to be illustrated more clearly that embodiment of the present invention technical scheme, embodiment and prior art will be retouched below Needed for stating, accompanying drawing to be used is briefly described, it should be apparent that, drawings in the following description are only Some embodiments of the present invention, for those of ordinary skill in the art, are not paying creative labor On the premise of, can be with according to these other accompanying drawings of accompanying drawings acquisition.

Fig. 1-a are a kind of schematic diagrams of wireless network deployment framework that embodiment of the present invention citing is provided；

Fig. 1-b are the schematic diagrams of another kind of wireless network deployment framework that embodiment of the present invention citing is provided；

Fig. 1-c are the schematic diagrams of another kind of wireless network deployment framework that embodiment of the present invention citing is provided；

Fig. 2 is a kind of schematic flow sheet of active scan processing method provided in an embodiment of the present invention；

Fig. 3 is the schematic flow sheet of another kind of active scan processing method provided in an embodiment of the present invention；

Fig. 4-a are the schematic flow sheets of another kind of active scan processing method provided in an embodiment of the present invention；

Fig. 4-b are the structures of a kind of Probe Request frames provided in an embodiment of the present invention and physical layer frame head Schematic diagram；

Fig. 4-c are a kind of schematic diagrams of frame interaction provided in an embodiment of the present invention；

Fig. 5-a are the schematic flow sheets of another kind of active scan processing method provided in an embodiment of the present invention；

Fig. 5-b are the schematic diagrams of another kind of frame interaction provided in an embodiment of the present invention；

Fig. 5-c are the schematic diagrams of another kind of frame interaction provided in an embodiment of the present invention；

Fig. 6-a are the schematic flow sheets of another kind of active scan processing method provided in an embodiment of the present invention；

Fig. 6-b are the schematic diagrams of another kind of frame interaction provided in an embodiment of the present invention；

Fig. 6-c are the schematic diagrams of another kind of frame interaction provided in an embodiment of the present invention；

Fig. 7 is a kind of schematic diagram of access point provided in an embodiment of the present invention；

Fig. 8 is the schematic diagram of another kind of access point provided in an embodiment of the present invention；

Fig. 9 is a kind of schematic diagram of website provided in an embodiment of the present invention；

Figure 10 is the schematic diagram of another kind of website provided in an embodiment of the present invention；

Figure 11 is a kind of schematic diagram of communication system provided in an embodiment of the present invention.

Specific embodiment

For enabling goal of the invention of the invention, feature, advantage more obvious and understandable, below will knot The accompanying drawing in the embodiment of the present invention is closed, the technical scheme in the embodiment of the present invention is clearly and completely retouched State, it is clear that the embodiments described below are only a part of embodiment of the present invention, and not all reality Apply example.Based on the embodiment in the present invention, those of ordinary skill in the art are not before creative work is made The all other embodiment for being obtained is put, the scope of protection of the invention is belonged to.

Term " first ", " second " in description and claims of this specification and above-mentioned accompanying drawing, " the 3rd " and " the 4th " etc. are for distinguishing different objects, rather than for describing particular order.Additionally, Term " comprising " and " having " and their any deformations, it is intended that cover non-exclusive including.Example Process, method, system, product or the equipment for such as including series of steps or unit is not limited to arrange The step of going out or unit, but alternatively also include the step of not listing or unit, or alternatively also include Other intrinsic for these processes, method, product or equipment step or unit.

Fig. 1-a, Fig. 1-b and Fig. 1-c is referred to, is that embodiment of the present invention citing is carried referring to Fig. 1-a～Fig. 1-c For three kinds of wireless network deployment frameworks schematic diagram.In Fig. 1-a, the signal of exemplified multiple AP is covered In the range of there are multiple STA, there are multiple STA in Fig. 1-b in the signal cover of single AP, scheme There is single STA in the signal cover of exemplified multiple AP in 1-c.The skill of the embodiment of the present invention Art scheme can be based on the wireless network deployment framework shown in Fig. 1-a or Fig. 1-b or Fig. 1-c citings or its change Shape framework is being embodied as.

Wherein, as the signal cover of multiple AP in Fig. 1-a and Fig. 1-c has overlay region, then When STA in overlay region carries out active scan, between AP, may there is competition collision.This The technical scheme of bright embodiment makes every effort to reduce competing collision frequency between AP, and then reduces competition expense Waste with the communication resource, and then lift system overall performance.

Scheme description is carried out from the angle of AP first below.

Referring to Fig. 2, Fig. 2 is a kind of stream of active scan processing method that one embodiment of the present of invention is provided Journey schematic diagram.Wherein, as shown in Fig. 2 citings, a kind of active scan that one embodiment of the present of invention is provided Processing method may include：

S201, AP receive the Probe Request frames that STA sends in the first available channel.

Wherein, the product form of the STA that various embodiments of the present invention are referred to can for example be panel computer, notes The product of this computer, mobile internet device, palm PC, desktop computer, mobile phone or other users terminal Form.

Such as STA can send Probe Request frames in the first available channel, and for example, STA can be first Probe Request frames are sent in the whole bandwidth of available channel.Accordingly, AP can be connect in the first available channel The Probe Request frames that STA is sent in the first available channel are received, for example, AP can be in the first available letter Probe Request frames are received in the whole bandwidth in road.

Wherein, there is provided can have N number of to the number of channels available for communication interaction of AP and STA, One available channel is one of them in N number of available channel.For example, there is provided to being used for for AP and STA The available channel of communication interaction can only include the first available channel, or be supplied to AP and STA for communicating Interactive available channel may include the first available channel and second channel etc..Certainly, there is provided to AP and STA The quantity of the available channel for communication interaction can be with more.

Wherein, the bandwidth of N number of available channel can equal or part it is equal or be not mutually equal.Such as first can use The bandwidth of channel can be equal to 20M etc..

Wherein, the N is greater than or equal to 1 integer.

Such as described N can for example be equal to 1,2,3,4,5,6,7,8,9 or other values.

S202, the AP are sent in wherein 1 sub-channels of many sub-channels of first available channel The corresponding Probe Response frames of the Probe Request frames.

Wherein, the AP sends described in wherein 1 sub-channels of many sub-channels of the first available channel The corresponding Probe Response frames of Probe Request frames, be considered as AP on the first available channel with OFDM mode sends the corresponding Probe Response frames of Probe Request frames, i.e. AP does not exist The whole bandwidth of the first available channel sends the corresponding Probe Response frames of Probe Request frames, but The corresponding Probe Response frames of Probe Request frames are sent in the fractional bandwidth of the first available channel.

Wherein, available channel (such as the first available channel) (be able to can be represented for many sub-channels by logical partitioning For K sub-channels).The K is greater than or equal to 2 integer.Wherein, the band of K sub-channels Width can equal or part it is equal or be not mutually equal, i.e., the spacing between K sub-channels can equal or part phase Deng or be not mutually equal.

For example sub-channels can be equivalent to one or more Resource Units.

Such as described K can be equal to 2,3,4,5,6,7,8,9,10,12,15,29,36 or Person other values.

In actual applications, AP can be determined concrete how by available channel (such as first based on various ways Available channel) it is divided into multiple (K) subchannels.

For example, AP sends the Probe Request in wherein 1 sub-channels of first available channel Before the corresponding Probe Response frames of frame, methods described can also include：The AP is matched somebody with somebody based on agreement First available channel is divided into multiple (K) subchannels by confidence breath, and wherein, the K is big In or positive integer equal to 2.That is, related protocol is could specify how available channel (such as One available channel) it is divided into K sub-channels, and the AP can be based on the regulation of related protocol come will be described First available channel is divided into multiple (K) subchannels.

Again for example, the Probe Request frames carry subchannel and divide instruction, in the AP described Wherein 1 sub-channels of the first available channel send the corresponding Probe of the Probe Request frames Before Response frames, method may also include：The AP is divided based on the subchannel and is indicated described the One available channel is divided into multiple (K) subchannels.Subchannel divides and indicates for example to can indicate that K's Value, i.e. subchannel divide the number of the subchannel for indicating to can indicate that AP can be used, or even can also refer to Bandwidth or resource location of every sub-channels in K sub-channels etc. are shown.

Optionally, in some possible embodiments of the invention, the subchannel divides instruction and can carry AP configuration (AP Configuration) information fields that Probe Request frames are carried, AP Configuration Information field can for example be carried in HE-SIG-B (efficient signaling-B) fields or be carried in Probe Request The other positions of frame.

S203, the AP receive the STA in first available channel and are directed to the Probe The acknowledgement frame that Response frames send.

Wherein, STA can send in the first available channel and send really for the Probe Response frames Recognize frame, for example, STA can be sent in the whole bandwidth of the first available channel for the Probe Response The acknowledgement frame that frame sends.Accordingly, AP can receive STA in the first available channel and send out in the first available channel The acknowledgement frame sent for the Probe Response frames for sending, for example, AP can be in the first available channel Whole bandwidth on receive for the Probe Response frames send acknowledgement frame.

It can be shown that, in the technical scheme of the present embodiment, as available channel (such as the first available channel) can By logical partitioning be many sub-channels, AP the first available channel receive STA send Probe Request After frame, the Probe Request are sent in wherein 1 sub-channels of many sub-channels of the first available channel The corresponding Probe Response frames of frame, therefore, even if having multiple AP under certain scene in identical available channel Send Probe Response frames, then if in the same period multiple AP be in identical available channel not Probe Response frames are sent with subchannel, that is advantageous for avoiding the competition of this multiple AP to collide.Can See the present embodiment such scheme introduce AP can receive Probe Request frames available channel wherein 1 Sub-channels reply the innovation mechanism of corresponding Probe Response frames, and this innovation mechanism is considered as one kind The Probe Response frames of similar asymmetric (asymmetric on transceiving band) reply mechanism, this mechanism Mechanism is replied (wherein, in traditional symmetrical expression Probe relative to conventional symmetrical formula Probe Response frames In Response frame reply mechanism, AP receives Probe Request frames in whole available channel and entirely may be used Corresponding Probe Response frames are replied with channel, receiving frame is symmetrical in bandwidth) for, be conducive to Reduce collision frequency being competed between AP, advantageously reduce competition expense and the communication resource is wasted, and then favorably In lifting wireless system overall performance.

Optionally, in some possible embodiments of the present invention, AP is in first available channel Wherein 1 sub-channels of many sub-channels send the corresponding Probe Response of the Probe Request frames Frame can include：AP randomly chooses wherein 1 son letter in many sub-channels of first available channel Road sends the corresponding Probe Response frames of the Probe Request frames, or, AP can be described 1 specified subchannel in many sub-channels of the first available channel sends the Probe Request frames pair The Probe Response frames answered, wherein, send the corresponding Probe Response of the Probe Request frames The specified subchannel of frame can be specified by STA.

Optionally, in some possible embodiments of the present invention, the base of the Probe Request frames The value of this service unit (BSS, Basic Service Set) color fields (BSS_color fields) can It is arranged to asterisk wildcard (such as Wildcard) or specified color values.Wherein, the BSS_color words For indicating basic service unit, such as different color values can be used to specify different basic service lists section Unit, such as BSS_color fields value be 1 and BSS_color fields value 2 represent specify it is different BSS。

Therefore, can be with being defined to AP using color values.For example, when BSS_color fields When value is arranged to specify color values, can represent that requirement belongs to specified by the specified color values The AP of BSS just has the right to reply corresponding Probe Response frames, for example, as the Probe Request The value of the BSS_color fields of frame is arranged to specify color values, then the AP is and the finger Determine the corresponding AP of color values, that is, AP belongs to the specified BSS of the specified color values.And example Such as, when the value of BSS_color fields is arranged to asterisk wildcard, can represent to replying Probe Response BSS belonging to the AP of frame is not required, that is to say, that the AP for belonging to any BSS has the right to reply institute State the corresponding Probe Response frames of Probe Request frames.

Optionally, in some possible embodiments of the present invention, the BSS_color fields can be by Carry the efficient letter of the high efficiency lead code (HighEfficiency Preamble) in Probe Request frames In order-A (HE-SIG-A) fields or efficient signaling-B (HE-SIG-B) field, such as BSS_color Field is carried in the common portion field of HE-SIG-B fields.Certainly, the BSS_color fields are also Other fields of the HE Preamble of Probe Request frames can be carried at.

Optionally, in some possible embodiments of the invention, the AP is in first available channel Receiving the STA includes for the acknowledgement frame that the Probe Response frames send：AP is described first Available channel receives the STA on first available channel with multicast mode or broadcast mode or orthogonal Frequency division multiple access (OFDMA, Orthogonal Frequency Division MultipleAccess) mode sends The acknowledgement frame (ACK frames) for the Probe Response frames.Wherein, the acknowledgement frame is for example Can confirm that (BA, BlockACK)/multi-user block confirms (M-BA, Multi-STABlockACK) for block Etc. form.

Optionally, in some possible embodiments of the invention, STA can be with Probe Request State in efficient ability (HE Capability) field carried in the MAC payload of frame or other fields The ability information of STA itself, wherein, the ability information of STA itself can indicate that STA can be received The packet of OFDMA modes.AP would know that transmission Probe Request after obtaining these ability informations The ability of the STA of frame, and then corresponding Probe Response frames, phase can be replied in OFDMA modes Answer, STA can receive the corresponding Probe that AP is replied in OFDMA modes in the first available channel Response frames, it is possible to OFDMA modes (or multicast mode or broadcast on the first available channel Mode) acknowledgement frame (ACK frames) for the Probe Response frames that sends.

Optionally, in some possible embodiments of the present invention, methods described may also include：

The AP receives the Probe Request frames that the STA sends in the second available channel；Institute Wherein 1 sub-channels that AP is stated in many sub-channels of second available channel send the Probe The corresponding Probe Response frames of Request frames；The AP receives described in second available channel The acknowledgement frame that STA is sent for the Probe Response frames.

Wherein, STA can send the Probe Request frames in the second available channel, and accordingly, AP can The Probe Request frames that STA is sent in the second available channel are received in the second available channel.Specifically Such as STA can be distinguished in the first available channel and the second available channel in same period or synchronization The Probe Request frames are sent, AP can be received in the second available channel and the first available channel respectively The Probe Request frames that STA sends.

That is, STA can send Probe Request frames respectively in multiple available channels, AP can be directed to Multiple available channels are so conducive to improving STA actively replying corresponding Probe Response frames respectively The success rate of scanning.

Scheme description is carried out from the angle of STA below.

Referring to Fig. 3, Fig. 3 is another kind of active scan processing method that an alternative embodiment of the invention is provided Schematic flow sheet.Wherein, as shown in Fig. 3 citings, the another kind that an alternative embodiment of the invention is provided Active scan processing method may include：

S301, STA send Probe Request frames in the first available channel.

Wherein, the product form of the STA that various embodiments of the present invention are referred to can for example be panel computer, pen Remember the product of this computer, mobile internet device, palm PC, desktop computer, mobile phone or other users terminal Product form.

Such as STA can send Probe Request frames in the whole bandwidth of the first available channel.AP can be First available channel receives the Probe Request frames that STA is sent in the first available channel, for example, AP Probe Request frames can be received in the whole bandwidth of the first available channel.

S302, the STA can receive AP in first available channel in first available channel The corresponding Probe of the Probe Request frames that wherein 1 sub-channels of many sub-channels send Response frames.

Wherein, the AP sends described in wherein 1 sub-channels of many sub-channels of the first available channel The corresponding Probe Response frames of Probe Request frames, be considered as AP on the first available channel with OFDM mode sends the corresponding Probe Response frames of Probe Request frames, i.e. AP does not exist The whole bandwidth of the first available channel sends the corresponding Probe Response frames of Probe Request frames, but The corresponding Probe Response frames of Probe Request frames are sent in the fractional bandwidth of the first available channel. Therefore the STA specifically receives AP on first available channel with just in first available channel The corresponding Probe Response frames of the Probe Request frames for handing over FDMA to send.

For example, the STA can receive AP in the described first available letter in first available channel The Probe Request frames that randomly selected 1 sub-channels send in many sub-channels in road are corresponding Probe Response frames.Or, the STA can receive AP described in first available channel The Probe Request frames that 1 specified subchannel in many sub-channels of the first available channel sends Corresponding Probe Response frames.

S303, the STA are sent for the Probe Response frames in first available channel Acknowledgement frame.

For example, STA can be sent in the whole bandwidth of the first available channel for the Probe Response The acknowledgement frame that frame sends, or, STA can be sent for described with OFDMA in the first available channel The acknowledgement frame that Probe Response frames send.Accordingly, AP can receive STA in the first available channel and exist The acknowledgement frame sent for the Probe Response frames that first available channel sends, for example, AP can The acknowledgement frame sent for the Probe Response frames is received in the whole bandwidth of the first available channel.

It can be shown that, in the technical scheme of the present embodiment, as available channel (such as the first available channel) can It is many sub-channels by logical partitioning, AP is receiving the Probe that send in the first available channel of STA After Request frames, the Probe is sent in wherein 1 sub-channels of many sub-channels of the first available channel The corresponding Probe Response frames of Request frames, therefore, even if having multiple AP under certain scene identical Available channel sends Probe Response frames, then if multiple AP are identical available in the same period The different subchannels of channel send Probe Response frames, and that is advantageous for avoiding the competition of this multiple AP Collision.It can be seen that the present embodiment such scheme introduce AP can receive Probe Request frames available channel Wherein 1 sub-channels reply the innovation mechanism of corresponding Probe Response frames, this innovation mechanism can be seen Work is that a kind of Probe Response frames of similar asymmetric reply mechanism, and this mechanism is right relative to tradition Title formula Probe Response frames are replied mechanism and (wherein, are returned in traditional symmetrical expression Probe Response frames In the system of answering a pager's call, AP replys corresponding Probe Response in the whole available channel for receiving Probe Request frames Frame) for, advantageously reduce, advantageously reduce competition expense and communication money Source wastes, and then is conducive to lifting wireless system overall performance.

Optionally, in some possible embodiments of the invention, the Probe Request frame portabilities There is subchannel to divide to indicate, wherein, the subchannel is divided and indicated for indicating the AP by described first Available channel is divided into multiple (K) subchannels.

Optionally, in some possible embodiments of the invention, the Probe Request frames it is basic The value of service unit color fields is arranged to asterisk wildcard or specified color values.

Optionally, in some possible embodiments of the invention, the basic service unit color fields It is carried at efficient signaling-A fields or the height of the high efficiency lead code that the Probe Request frames are carried In effect signaling-B field.

Optionally, in some possible embodiments of the invention, if the base of the Probe Request frames The value of this service unit color fields is arranged to specify color values, then the AP is to specify with described The corresponding AP of color values.

Optionally, in some possible embodiments of the invention, the STA is in the described first available letter Road sends the acknowledgement frame for the Probe Response frames, including：The STA can described first With on channel with OFDMA or multicast mode or broadcast mode send for the Probe Response The acknowledgement frame of frame.

Optionally, in some possible embodiments of the invention, methods described also includes：

The STA sends the Probe Request frames in the second available channel；The STA is described Two available channels receive AP and send in wherein 1 sub-channels of many sub-channels of second available channel The corresponding Probe Response frames of the Probe Request frames；The STA is available described second Channel sends the acknowledgement frame for the Probe Response frames.

Accordingly, AP can receive the Probe that STA is sent in the second available channel in the second available channel Request frames.Concrete such as STA can be in same period or synchronization in the first available channel and the Two available channels send the Probe Request frames respectively, and AP can respectively in the second available channel and first Available channel receives the Probe Request frames that STA sends.

For ease of being best understood from and implementing the above-mentioned technical proposal of the embodiment of the present invention, with reference to of the invention real The application scenes for applying example are described in detail.

Referring to Fig. 4-a, Fig. 4-a are that another kind of active scan that an alternative embodiment of the invention is provided is processed The schematic flow sheet of method.Active scan processing method shown in Fig. 4-a citings can be in Fig. 1-a or Fig. 1-b Or be embodied as in the wireless network deployment framework shown in Fig. 1-c citings.

As shown in Fig. 4-a citings, another kind of active scan process side that an alternative embodiment of the invention is provided Method may include：

S401, STA#1 send Probe Request frame #1 in available channel #1.

Wherein, the structure of a kind of possible Probe Request frames #1 and physical layer frame head can be such as Fig. 4-b Shown in citing.

Wherein, shown in Fig. 4-b citings, the physical layer frame head that Probe Request frames #1 is carried includes tradition Lead code (Legacy Preamble) and high efficiency lead code (High Efficiency Preamble).Its Portability HE-SIG-A fields in the high efficiency lead code that middle Probe Request frames #1 is carried, can also take Band does not carry HE-SIG-B fields etc..

Wherein, the BSS_color fields that the Probe Request frames #1 is carried are assumed in the present embodiment Value is arranged to specify color values.

Optionally, in some possible embodiments of the present invention, the BSS_color fields can be by Carry Probe Request frames carry HighEfficiency Preamble HE-SIG-A fields or In HE-SIG-B fields, for example, BSS_color fields can carry the public affairs in HE-SIG-B fields Common part field.Certainly, the BSS_color fields may also be carried at Probe Request frames and take The other positions of the HE Preamble of band.

Wherein, the bandwidth of available channel #1 can be 20M or other bandwidth.

S402, AP#1 receive the Probe Request frame #1, AP#1 that STA#1 sends in available channel #1 Judge whether AP#1 belongs to the color that the BSS_color fields of Probe Request frames #1 carryings are carried The specified BSS of value.

If (represent AP#1 have the right to reply corresponding Probe Response frames), then execution step S403.

(represent that AP#1 haves no right to reply corresponding Probe Response frames) if not, AP#1 is negligible to be connect The Probe Request frame #1 for receiving, i.e. AP#1 does not reply the corresponding Probe of Probe Request frame #1 Response frames.

S403, AP#1 randomly choose 1 sub-channels in many sub-channels of available channel #1 and send described The corresponding Probe Response frame #p1 of Probe Request frame #1.

Optionally, in some possible embodiments of the present invention, if AP#1 is in available channel #1 On receive Probe Request frame #1, AP#1 can be in (the xIFS after xIFS<DIFS is (wherein, XIFS numerical value be x, such as xIFS=SIFS=16us, DIFS=34us, xIFS<DIFS)), upper State on available channel #1 transmission Legacy Preamble and High Efficiency Preamble, and can be can Probe Request are sent with randomly selecting wherein 1 in many sub-channels (such as 9 sub-channels) of channel #1 The corresponding Probe Response frame #p1 of frame #1.

Wherein, AP#1 randomly chooses 1 sub-channels in many sub-channels of available channel #1 and sends described The corresponding Probe Response frame #p1 of Probe Request frame #1, can regard AP#1 as in available channel #1 The corresponding Probe Response frame #p1 of the Probe Request frame #1 are sent in OFDMA modes.

Wherein, multiple AP send the feelings of Probe Response frames in available channel #1 in OFDMA modes Condition can be as shown in Fig. 4-c citings.Mainly with multiple AP available channel #1's in citing shown in Fig. 4-c In case of different subchannels send Probe Response frames.

S404, STA#1 available channel #1 receive AP#1 in many sub-channels of available channel #1 with The Probe Response frame #p1 that 1 sub-channels that machine is selected send, wherein, if STA#1 correctly connects Receive Probe Response frame #p1, then STA#1 is sent for the Probe in available channel #1 The acknowledgement frame #a1 of Response frame #p1.Accordingly, AP#1 can receive STA#1 on available channel #1 The acknowledgement frame #a1 of transmission.

It is appreciated that when under scenes of the STA#1 also in the signal cover of other AP, other AP Interactive mode between STA#1 can be similar to the interactive mode between AP#1 and STA#1, respective fields Scape can be by that analogy.

It should be noted that sending in AP#1, Probe Response frames #p1 is no to be produced with other AP In the case of competition collision (collision), then Probe Response frames #p1 usually can be by STA#1 It is correct to receive, and send Probe Response frames #p1 and other AP#1 in AP#1 and generate at random (there is competition collision, i.e. other AP use identical in the same time in the identical period or mutually in the case of collision Subchannel also sends the corresponding Probe Response frames of Probe Request frame #1), Probe Response Frame #p1 generally cannot be properly received by STA#1.

It can be shown that, in the technical scheme of the present embodiment, as available channel #1 by logical partitioning can be Many sub-channels, AP#1 receive STA#1 available channel #1 send Probe Request frames after, 1 sub-channels are randomly choosed in many sub-channels of available channel #1 sends Probe Request frames correspondence Probe Response frames, i.e. AP#1 can send Probe in available channel #1 in OFDMA modes The corresponding Probe Response frames of Request frames, even if therefore have including including AP#1 under certain scene Multiple AP send Probe Response frames in identical available channel, then if multiple AP in the same period It is the different subchannels transmission Probe Response frames in identical available channel, that is advantageous for avoiding this Competition collision between multiple AP.It can be seen that the present embodiment such scheme introduces AP can receive Probe Many sub-channels of the available channel of Request frames randomly choose 1 sub-channels and reply corresponding Probe The innovation mechanism of Response frames, this innovation mechanism are considered as a kind of Probe of similar asymmetric Response frames reply mechanism, and this mechanism replys mechanism relative to conventional symmetrical formula Probe Response frames For, advantageously reduce, advantageously reduce competition expense and communication resource wave Take, and then be conducive to lifting wireless system overall performance.

Referring to Fig. 5-a, Fig. 5-a are that another kind of active scan that an alternative embodiment of the invention is provided is processed The schematic flow sheet of method.Active scan processing method shown in Fig. 5-a citings can be lifted in Fig. 1-a or 1-c It is embodied as in wireless network deployment framework shown in example.As Fig. 5-a citing shown in, the present invention another Another kind of active scan processing method that embodiment is provided may include：

S501, STA#1 send Probe Request frame #1 in available channel #1.

Wherein, the structure of a kind of possible Probe Request frames #1 and physical layer frame head can be such as Fig. 4-c Shown in citing.

Wherein, the bandwidth of available channel #1 can be 20M or other bandwidth.

S502, AP#1 receive the Probe Request frame #1, AP#1 that STA#1 sends in available channel #1 1 sub-channels are randomly choosed in many sub-channels of available channel #1 sends the Probe Request frames The corresponding Probe Response frame #p1 of #1.

Optionally, in some possible embodiments of the present invention, if AP#1 is in available channel #1 On receive Probe Request frame #1, AP#1 can be in (the xIFS after xIFS<DIFS is (wherein, XIFS numerical value be x, such as xIFS=SIFS=16us, DIFS=34us, xIFS<DIFS)), upper State on available channel #1 transmission Legacy Preamble and High Efficiency Preamble, and can be can Probe Request are sent with randomly selecting wherein 1 in many sub-channels (such as 9 sub-channels) of channel #1 The corresponding Probe Response frame #p1 of frame #1.That is, AP#1 can on available channel #1 with OFDMA modes send the corresponding Probe Response frame #p1 of Probe Request frame #1.

S503, STA#1 available channel #1 receive AP#1 in many sub-channels of available channel #1 with The Probe Response frame #p1 that 1 sub-channels that machine is selected send, STA#1 are sent in available channel #1 For the acknowledgement frame #a1 of the Probe Response frame #p1.Accordingly, AP#1 can be in available channel #1 receives the acknowledgement frame #a1 that STA#1 sends.

S504, AP#2 receive the Probe Request frame #1, AP#2 that STA#1 sends in available channel #1 1 sub-channels are randomly choosed in many sub-channels of available channel #1 sends the Probe Request frames The corresponding Probe Response frame #p2 of #1.

Optionally, in some possible embodiments of the present invention, if AP#2 is in available channel #1 On receive Probe Request frame #1, AP#2 can be in (the xIFS after xIFS<DIFS(xIFS Numerical value is x, for example xIFS=SIFS=16us, DIFS=34us, xIFS<DIFS)), it is above-mentioned can With sending Legacy Preamble and High Efficiency Preamble on channel #1, and can be in available letter Wherein 1 transmission Probe Request is randomly selected in many sub-channels (such as 9 sub-channels) of road #1 The corresponding Probe Response frame #p2 of frame #1.That is, AP#2 can on available channel #1 with OFDMA modes send the corresponding Probe Response frame #p2 of Probe Request frame #1.

S505, STA#1 available channel #1 receive AP#2 in many sub-channels of available channel #1 with The Probe Response frame #p2 that 1 sub-channels that machine is selected send, STA#1 are sent in available channel #1 For the acknowledgement frame #a2 of the Probe Response frame #p2.Accordingly, AP#2 can be in available channel #1 receives the acknowledgement frame #a2 that STA#1 sends.

If it is appreciated that the subchannel that AP#1 transmission Probe Response frame #p1 are used is different from AP#2 sends the subchannel that Probe Response frame #p2 are used, then just do not have between AP#1 and AP#2 There is generation competition collision (collision)., whereas if AP#1 sends Probe Response frame #p1 making The subchannel that subchannel is used with AP#2 transmission Probe Response frame #p2 is identical, then AP#1 Competition collision is generated and AP#2 between just.

It is appreciated that there is no certainty between step S502～step S503 and step S504～step S505 Perform sequencing.For example, step S502～step S503 can be same with step S504～step S505 Perform in one period.

Certainly, in addition to AP#1 and AP#2, it is also possible to which there are other one or more AP can Probe Request frame #1 are received in available channel #1, these AP response Probe Request frame #1's Mode is similar with AP#1 and AP#2.

For example, see the AP such as Fig. 5-b, AP#1, AP#2, AP#3, AP#4, AP#5 and AP#6 Corresponding Probe Response frames are replied using similar fashion.AP#1, AP#2, AP#3 are shown in Fig. 5-c The different subchannels that available channel #1 be have chosen respectively with AP#6 send corresponding Probe Response frames, and AP#4 and AP#5 is due to selecting the same sub-channel of available channel #1 sending corresponding Probe Response Frame, so generating random collision, this may result in STA#1 and can not be correctly received AP#4 and AP#5 The corresponding Probe Response frames for sending.

For example under intensive scene, the AP of the Probe Request frames of STA can be received (hear) Number may be much larger than the available subchannels number of available channel, then when AP random selection subchannels are replied When corresponding Probe Response frames, inevitable that some subchannels are selected by multiple AP, And then produce the competition collision of Probe Response frames.When competition collision, when STA is can When preparing to receive Probe Response frames with channel, STA usually can detect the signal of respective sub-channel Energy still correctly can not be understood (can not have correctly received corresponding Probe Response frames), if many All there is such result in number subchannel, then STA can think current scene accordingly for comparatively dense deployment field Scape, AP numbers are relatively more, therefore, AP randomly chooses subchannel to send corresponding Probe Response The competition collision of frame may be also more more, then single pass is likely to be not enough to complete to currently available nothing All effectively identification of gauze network, STA can trigger Probe after ACK frames are replied to AP again , to be carried out continuously active scan, such as Fig. 5-c citings are shown for Request frames.And in upper once scanning The AP of the corresponding ACK frames replied corresponding Probe Response frames and be properly received STA replies can not Present scan is participated in again, and the AP for only not obtaining corresponding ACK frames participates in random choosing in present scan Take subchannel and send the flow process of Probe Response frames.

For example, in the scene shown in Fig. 5-c citings, in STA first time active scan process, including AP#4, AP#5, AP#6, AP#7, AP#8 and AP#9 reply corresponding Probe in interior several AP Competition collision is there occurs during Response frames, including several including AP#1, AP#2, AP#3 and AP#10 Not there is competition collision in individual AP.STA has found that the number of times of competition collision is more, therefore initiates main for the second time Dynamic scanning, successfully identified AP#1, AP#2, AP#3 and AP#10 in first time active scan process Corresponding Probe Response frames are not replied in second active scan process, shown in Fig. 5-c citings In scene, by second active scan process, including AP#4, AP#5, AP#6, AP#7, AP#8 Also successfully recognized by STA in interior several AP with AP#9.

STA can be maintained last round of when second active scan sends Probe Request frames Relevant parameter configure, also reconfigurable new parameter and in Probe Request frames indicate, such as STA The subchannel number of available channel can be increased, in the hope of the probability for further reducing random collision.If certainly The competition collision frequency more than given threshold is have also appeared in second active scan process, and SAT can be again Initiate active scan.

It can be shown that, in the technical scheme of the present embodiment, as available channel #1 by logical partitioning can be Many sub-channels, are receiving STA#1 in available channel including the multiple AP including AP#1 and AP#2 After #1 sends Probe Request frames, can randomly choose in many sub-channels of available channel #1 respectively 1 sub-channels send the corresponding Probe Response frames of Probe Request frames, i.e., each AP can divide The corresponding Probe Response of Probe Request frames are not sent in OFDMA modes in available channel #1 Frame, therefore, if multiple AP are the different subchannels transmission Probe in identical available channel in the same period Response frames, that is advantageous for avoiding the competition between this multiple AP from colliding.It can be seen that on the present embodiment The scheme of stating introduces AP can be in many sub-channels random selections of the available channel for receiving Probe Request frames 1 sub-channels reply the innovation mechanism of corresponding Probe Response frames, and this innovation mechanism is considered as one The Probe Response frames for planting similar asymmetric reply mechanism, and this mechanism is relative to conventional symmetrical formula For Probe Response frame reply mechanism, advantageously reduce, be conducive to Reduce competition expense and the communication resource is wasted, and then be conducive to lifting wireless system overall performance.

Referring to Fig. 6-a, Fig. 6-a are that another kind of active scan that an alternative embodiment of the invention is provided is processed The schematic flow sheet of method.Active scan processing method shown in Fig. 6-a citings can be in Fig. 1-a or Fig. 1-c It is embodied as in wireless network deployment framework shown in citing.As shown in Fig. 6-a citings, the present invention's is another Another kind of active scan processing method that individual embodiment is provided may include：

S601, STA#1 are at available channel #1, available channel #2, available channel #3 and available channel #4 point Fa Song not Probe Request frame #1.

Wherein, the BSS_color fields that the Probe Request frames #1 is carried are assumed in the present embodiment Value is arranged to asterisk wildcard, that is to say, that represent belonging to the AP to replying Probe Response frames BSS is not required, that is to say, that the AP for belonging to any BSS has the right to reply Probe Request frames The corresponding Probe Response frames of #1.

For example, the bandwidth of available channel #1 can be 20M or other bandwidth, available channel #2, can be with letter The bandwidth of road #3 and available channel #4 can be same as or different from the bandwidth of available channel #1.Wherein, may be used With channel #1, available channel #2, available channel #3 and the bandwidth of available channel #4 can part it is identical or complete It is identical or different.

S602, AP#1 have for example been respectively received STA#1 transmissions in available channel #1 and available channel #2 Probe Request frame #1, AP#1 has found the BSS_color fields that Probe Request frames #1 is carried The color value asterisk wildcards of carrying, it is thus determined that AP#1 has the right to reply corresponding Probe Response frames. AP#1 randomly chooses 1 sub-channels in many sub-channels of available channel #1 and sends the Probe The corresponding Probe Response frame #p1 of Request frame #1, also, AP#1 can also be available channel #2's 1 sub-channels are randomly choosed in many sub-channels sends the corresponding Probe of the Probe Request frame #1 Response frame #p1.

S603, STA#1 available channel #1 receive AP#1 in many sub-channels of available channel #1 with The Probe Response frame #p1 that 1 sub-channels that machine is selected send, wherein, if STA#1 is correct Probe Response frame #p1 are received from available channel #1, then STA#1 is sent in available channel #1 For the acknowledgement frame #a1 of the Probe Response frame #p1.

Also, STA#1 can be in available channel #2 reception AP#1 in many sub-channels of available channel #2 The Probe Response frame #p1 that randomly selected 1 sub-channels send, wherein, if STA#1 is correct Receive Probe Response frame #p1 from available channel #2, then STA#1 available channel #2 send out Send the acknowledgement frame #a1 for the Probe Response frame #p1.

S604, AP#2 have for example been respectively received STA#1 transmissions in available channel #1 and available channel #3 Probe Request frame #1, AP#2 has found the BSS_color fields that Probe Request frames #1 is carried The color value asterisk wildcards of carrying, it is thus determined that AP#2 has the right to reply corresponding Probe Response frames. AP#2 randomly chooses 1 sub-channels in many sub-channels of available channel #1 and sends the Probe The corresponding Probe Response frame #p2 of Request frame #1, also, AP#2 can also be available channel #3's 1 sub-channels are randomly choosed in many sub-channels sends the corresponding Probe of the Probe Request frame #1 Response frame #p2.

S605, STA#1 available channel #1 receive AP#2 in many sub-channels of available channel #1 with The Probe Response frame #p2 that 1 sub-channels that machine is selected send, wherein, if STA#1 is correct Probe Response frame #p2 are received from available channel #1, then STA#1 is sent in available channel #1 For the acknowledgement frame #a2 of the Probe Response frame #p2.

Also, STA#1 can be in available channel #3 reception AP#2 in many sub-channels of available channel #3 The Probe Response frame #p2 that randomly selected 1 sub-channels send, wherein, if STA#1 is correct Receive Probe Response frame #p2 from available channel #3, then STA#1 available channel #3 send out Send the acknowledgement frame #a2 for the Probe Response frame #p2.

S606, AP#3 have for example been respectively received STA#1 transmissions in available channel #2 and available channel #4 Probe Request frame #1, AP#3 has found the BSS_color fields that Probe Request frames #1 is carried The color value asterisk wildcards of carrying, it is thus determined that AP#3 has the right to reply corresponding Probe Response frames. AP#3 randomly chooses 1 sub-channels in many sub-channels of available channel #2 and sends the Probe The corresponding Probe Response frame #p3 of Request frame #1, also, AP#3 can also be available channel #4's 1 sub-channels are randomly choosed in many sub-channels sends the corresponding Probe of the Probe Request frame #1 Response frame #p3.

S607, STA#1 available channel #2 receive AP#3 in many sub-channels of available channel #2 with The Probe Response frame #p3 that 1 sub-channels that machine is selected send, wherein, if STA#1 is correct Probe Response frame #p3 are received from available channel #2, then STA#1 is sent in available channel #2 For the acknowledgement frame #a3 of the Probe Response frame #p3.

Also, STA#1 can be in available channel #4 reception AP#3 in many sub-channels of available channel #4 The Probe Response frame #p3 that randomly selected 1 sub-channels send, wherein, if STA#1 is correct Receive Probe Response frame #p3 from available channel #4, then STA#1 available channel #4 send out Send the acknowledgement frame #a3 for the Probe Response frame #p3.

S608, AP#4 have for example been respectively received STA#1 transmissions in available channel #3 and available channel #4 Probe Request frame #1, AP#4 has found the BSS_color fields that Probe Request frames #1 is carried The color value asterisk wildcards of carrying, it is thus determined that AP#4 has the right to reply corresponding Probe Response frames. AP#4 randomly chooses 1 sub-channels in many sub-channels of available channel #3 and sends the Probe The corresponding Probe Response frame #p4 of Request frame #1, also, AP#4 can also be available channel #4's 1 sub-channels are randomly choosed in many sub-channels sends the corresponding Probe of the Probe Request frame #1 Response frame #p4.

S609, STA#1 available channel #3 receive AP#4 in many sub-channels of available channel #3 with The Probe Response frame #p4 that 1 sub-channels that machine is selected send, wherein, if STA#1 is correct Probe Response frame #p4 are received from available channel #3, then STA#1 is sent in available channel #3 For the acknowledgement frame #a4 of the Probe Response frame #p4.

Also, STA#1 can be in available channel #4 reception AP#4 in many sub-channels of available channel #4 The Probe Response frame #p4 that randomly selected 1 sub-channels send, wherein, if STA#1 is correct Receive Probe Response frame #p4 from available channel #4, then STA#1 available channel #4 send out Send the acknowledgement frame #a4 for the Probe Response frame #p4.

It is appreciated that step S602～step S603, step S604～step S605, step S606～step The rapid execution sequencing for not having certainty between S607 and step S608～step S609.For example step S602～ Step S603, step S604～step S605, step S606～step S607 and step S608～step S609 Can perform within the same period.

It is appreciated that as shown in Fig. 6-b citings, mainly can simultaneously available with STA in the present embodiment 4 available channels such as channel #1, available channel #2, available channel #3 and available channel #4 carry out frame transmitting-receiving As a example by be described, certainly, STA simultaneously can also carry out frame on more or smaller amounts available channel Transmitting-receiving, and the processing mode of STA and AP can be by that analogy under corresponding scene.In the present embodiment it is main with STA can be retouched as a example by simultaneously carrying out frame transmitting-receiving with 4 AP such as AP#1, AP#2, AP#3 and AP#4 State, certain STA also can carry out frame transmitting-receiving simultaneously with greater or lesser number of AP, and under corresponding scene The processing mode of STA and AP can be by that analogy.

The general scene that STA carries out frame transmitting-receiving in multiple available channels with multiple AP simultaneously can be such as Fig. 6-c Shown in citing.

It is similar, STA still can according to system practical situation, what such as STA can be replied according to AP The competition collision frequency of probing response frame, comes triggering active scan again, its main flow and the example above Flow process is similar.

It can be shown that, in the technical scheme of the present embodiment, as available channel can be many height by logical partitioning Channel, AP receive STA after multiple available channels send Probe Request frames respectively, can be respectively The many sub-channels in corresponding available channel randomly choose 1 sub-channels and send Probe Request frames pair The Probe Response frames answered, therefore, even if having multiple AP under some scenes in identical available channel Send Probe Response frames, then if multiple AP are the differences in identical available channel in the same period Subchannel sends Probe Response frames, and that is advantageous for avoiding the competition of this multiple AP to collide.Can See the present embodiment such scheme introduce AP can receive Probe Request frames available channel many height Channel randomly chooses the innovation mechanism that 1 sub-channels reply corresponding Probe Response frames, this innovation machine System regards that a kind of Probe Response frames of similar asymmetric reply mechanism as, and this mechanism is relative to biography For system symmetrical expression Probe Response frame reply mechanism, advantageously reduce, Advantageously reduce competition expense and the communication resource is wasted, and then be conducive to lifting wireless system overall performance.

For ease of being better understood from and implementing the above-mentioned technical proposal of the embodiment of the present invention, be also provided below for Implement the relevant apparatus of such scheme.

Referring to Fig. 7, the embodiment of the present invention also provides a kind of access point 700, it may include：Receiving unit 710 With transmitting element 720.

Receiving unit 710, for the probe request sent in the first available channel receiving station.

Transmitting element 720, for wherein 1 sub-channels of many sub-channels in first available channel Send the corresponding probing response frame of the probe request.

For example sub-channels can be equivalent to one or more Resource Units.

The receiving unit 710 is additionally operable to, and receives the website in first available channel and is directed to the spy Survey the acknowledgement frame that response frame sends.

Optionally, in some possible embodiments of the present invention, the transmitting element is specifically in institute Wherein 1 sub-channels are randomly choosed in many sub-channels for stating the first available channel sends the probe requests thereby The corresponding probing response frame of frame.

Optionally, in some possible embodiments of the present invention, the probe request carries sub- letter Road is divided and is indicated；Described access point also includes channels determining unit 730, for being divided based on the subchannel First available channel is divided into many sub-channels by instruction.

Optionally, in some possible embodiments of the present invention, described access point is also determined including channel Unit 730, for being divided into many sub-channels based on protocol configuration information by first available channel.

Optionally, in some possible embodiments of the present invention, it is basic that the probe request is carried The value of service unit color fields is arranged to asterisk wildcard or specified color values, the basic service unit Color fields are used for indicating basic service unit.

Optionally, in some possible embodiments of the present invention, the basic service unit color words Section is carried at the efficient signaling-A fields of the high efficiency lead code of the probe request or efficient signaling In-B field.

Optionally, in some possible embodiments of the present invention, if the basic clothes of the probe request The value of business unit color fields is arranged to specify color values, then described access point is to specify with described The corresponding access point of color values.

Optionally, in some possible embodiments of the present invention,

The acknowledgement frame that the website is sent for the probing response frame is received in first available channel Aspect, the receiving unit is specifically for receiving the website described first in first available channel On available channel with OFDM mode or multicast mode or broadcast mode send for the detection The acknowledgement frame of response frame.

Optionally, in some possible embodiments of the present invention, receiving unit 710 is additionally operable to second Available channel receives the probe request that the website sends；

The transmitting element 720 is additionally operable to, wherein the 1 of many sub-channels of second available channel Sub-channels send the corresponding probing response frame of the probe request；

The receiving unit 710 is additionally operable to, and receives the website in second available channel and is directed to the spy Survey the acknowledgement frame that response frame sends.

It is understood that the function of the access point 700 of the present embodiment can be according in said method embodiment Method is implemented, and which implements the associated description that process is referred to said method embodiment, herein not Repeat again.

As can be seen that in embodiment of the present invention scheme, as available channel (such as the first available channel) can quilt Logical partitioning be many sub-channels, AP 700 the first available channel receive STA send Probe Request After frame, the Probe Request are sent in wherein 1 sub-channels of many sub-channels of the first available channel The corresponding Probe Response frames of frame, even if therefore have multiple AP to send out in identical available channel under certain scene Send Probe Response frames, then if multiple AP are the differences in identical available channel in the same period Subchannel sends Probe Response frames, and that is advantageous for avoiding the competition of this multiple AP to collide.It can be seen that The present embodiment such scheme introduces AP can be wherein the 1 of the available channel for receiving Probe Request frames Sub-channels reply the innovation mechanism of corresponding Probe Response frames, and this innovation mechanism is considered as one kind The Probe Response frames of similar asymmetric reply mechanism, and this mechanism is relative to conventional symmetrical formula For Probe Response frame reply mechanism, advantageously reduce, Jin Eryou Waste beneficial to reduction competition expense and the communication resource, and then be conducive to lifting wireless system overall performance.

Referring to Fig. 8, the embodiment of the present invention also provides a kind of access point 800 to be included：Processor 810, storage Device 820 and antenna 830.

Wherein, by calling the instruction or code that store in the memorizer 820, the processor 810 For performing following steps：

The probe request sent in the first available channel receiving station by the antenna 830；By described Antenna sends the probe requests thereby in wherein 1 sub-channels of many sub-channels of first available channel The corresponding probing response frame of frame；The website is received in first available channel by the antenna and is directed to institute State the acknowledgement frame of probing response frame transmission.

For example sub-channels can be equivalent to one or more Resource Units.

Optionally, in some possible embodiments of the present invention, the processor is specifically for described Wherein 1 sub-channels are randomly choosed in many sub-channels of the first available channel sends the probe request Corresponding probing response frame.

Optionally, in some possible embodiments of the present invention, the probe request carries sub- letter Road is divided and is indicated；The processor is additionally operable to be divided based on the subchannel and is indicated first available channel It is divided into many sub-channels.

Optionally, in some possible embodiments of the present invention, described access point is also determined including channel Unit, for being divided into many sub-channels based on protocol configuration information by first available channel.

Optionally, in some possible embodiments of the present invention, the processor is specifically for passing through The antenna receives the website on first available channel with orthogonal frequency in first available channel Divide the acknowledgement frame for the probing response frame that multi-access mode or multicast mode or broadcast mode send.

Optionally, in some possible embodiments of the present invention, the processor is additionally operable to by described Antenna receives the probe request that the website sends in the second available channel；By the antenna in institute The wherein 1 sub-channels transmission probe request for stating many sub-channels of the second available channel is corresponding Probing response frame；The website is received by the antenna in second available channel to ring for the detection The acknowledgement frame for answering frame to send.

It is understood that the function of the access point 800 of the present embodiment can be according in said method embodiment Method is implemented, and which implements the associated description that process is referred to said method embodiment, herein not Repeat again.

As can be seen that in embodiment of the present invention scheme, as available channel (such as the first available channel) can quilt Logical partitioning be many sub-channels, AP 800 the first available channel receive STA send Probe Request After frame, the Probe Request are sent in wherein 1 sub-channels of many sub-channels of the first available channel The corresponding Probe Response frames of frame, even if therefore have multiple AP to send out in identical available channel under certain scene Send Probe Response frames, then if multiple AP are the differences in identical available channel in the same period Subchannel sends Probe Response frames, and that is advantageous for avoiding the competition of this multiple AP to collide.It can be seen that The present embodiment such scheme introduces AP can be wherein the 1 of the available channel for receiving Probe Request frames Sub-channels reply the innovation mechanism of corresponding Probe Response frames, and this innovation mechanism is considered as one kind The Probe Response frames of similar asymmetric reply mechanism, and this mechanism is relative to conventional symmetrical formula For Probe Response frame reply mechanism, advantageously reduce, Jin Eryou Waste beneficial to reduction competition expense and the communication resource, and then be conducive to lifting wireless system overall performance.

Referring to Fig. 9, the embodiment of the present invention also provides a kind of website 900, including：

Transmitting element 910, for sending probe request in the first available channel；

Receiving unit 920, for receiving access point in first available channel in first available channel Many sub-channels wherein 1 sub-channels send the corresponding probing response frame of the probe request；

The transmitting element 930 is additionally operable to, and sends for the probing response frame in first available channel Acknowledgement frame.

Optionally, it is in some possible embodiments of the present invention, described to connect in first available channel Receive the spy of the access point in the wherein 1 sub-channels transmission of many sub-channels of first available channel Surveying the corresponding probing response frame of claim frame includes：Access point is received described first in first available channel The probe request correspondence that randomly selected 1 sub-channels send in many sub-channels of available channel Probing response frame.

Optionally, in some possible embodiments of the present invention, the probe request carries sub- letter Road is divided and is indicated, wherein, the subchannel is divided and indicated for indicating that described access point is can use described first Channel is divided into many sub-channels.

For example sub-channels can be equivalent to one or more Resource Units.

Optionally, it is in some possible embodiments of the present invention, described to send out in first available channel Send the aspect of the acknowledgement frame for the probing response frame：Transmitting element is specifically in the described first available letter On road with OFDM mode or multicast mode or broadcast mode send for the probing response frame Acknowledgement frame.

Optionally, in some possible embodiments of the present invention, the transmitting element is additionally operable to second Available channel sends the probe request；

It is appreciated that the product form of the website 900 of the present embodiment can for example be panel computer, notebook The product of computer, mobile internet device, palm PC, desktop computer, mobile phone or other users terminal Form.

It is understood that the function of the website 900 of the present embodiment can be according to the side in said method embodiment Method is implemented, and which implements the associated description that process is referred to said method embodiment, herein no longer Repeat.

As can be seen that in embodiment of the present invention scheme, as available channel (such as the first available channel) can quilt Logical partitioning be many sub-channels, AP the first available channel receive STA900 send Probe Request After frame, the Probe Request are sent in wherein 1 sub-channels of many sub-channels of the first available channel The corresponding Probe Response frames of frame, even if therefore have multiple AP to send out in identical available channel under certain scene Send Probe Response frames, then if multiple AP are the differences in identical available channel in the same period Subchannel sends Probe Response frames, and that is advantageous for avoiding the competition of this multiple AP to collide.It can be seen that The present embodiment such scheme introduces AP can be wherein the 1 of the available channel for receiving Probe Request frames Sub-channels reply the innovation mechanism of corresponding Probe Response frames, and this innovation mechanism is considered as one kind The Probe Response frames of similar asymmetric reply mechanism, and this mechanism is relative to conventional symmetrical formula For Probe Response frame reply mechanism, advantageously reduce, Jin Eryou Waste beneficial to reduction competition expense and the communication resource, and then be conducive to lifting wireless system overall performance.

Referring to Figure 10, the embodiment of the present invention also provides a kind of website website 1000, including：

Processor 1010, memorizer 1020 and antenna 1030.

Wherein, by calling the instruction or code that store in the memorizer 1020, the processor 1010 For performing following steps：Probe request is sent in the first available channel by the antenna 1030；It is logical Cross the antenna many height letters of the access point in first available channel are received in first available channel The corresponding probing response frame of the probe request that wherein 1 sub-channels in road send；By the antenna The acknowledgement frame for the probing response frame is sent in first available channel.

Optionally, in some possible embodiments of the present invention, the processor is used for by the day It is random in many sub-channels of first available channel that line receives access point in first available channel The corresponding probing response frame of the probe request that 1 sub-channels for selecting send.

For example sub-channels can be equivalent to one or more Resource Units.

Optionally, in some possible embodiments of the present invention, the processor is used for by the day What line was sent with OFDM mode or multicast mode or broadcast mode on first available channel For the acknowledgement frame of the probing response frame.

Optionally, in some possible embodiments of the present invention, the processor is additionally operable to by described Antenna sends the probe request in the second available channel；By the antenna in second available channel Receive described in wherein 1 sub-channels transmission of the access point in many sub-channels of second available channel The corresponding probing response frame of probe request；Sent for institute in second available channel by the antenna State the acknowledgement frame of probing response frame.

It is appreciated that the product form of the website 1000 of the present embodiment can for example be panel computer, notes The product of this computer, mobile internet device, palm PC, desktop computer, mobile phone or other users terminal Form.

It is understood that the function of the website 1000 of the present embodiment can be according in said method embodiment Method is implemented, and which implements the associated description that process is referred to said method embodiment, herein not Repeat again.

As can be seen that in embodiment of the present invention scheme, as available channel (such as the first available channel) can quilt Logical partitioning be many sub-channels, AP the first available channel receive STA 1000 send Probe After Request frames, the Probe is sent in wherein 1 sub-channels of many sub-channels of the first available channel The corresponding Probe Response frames of Request frames, even if therefore have under certain scene multiple AP it is identical can Probe Response frames are sent with channel, then if multiple AP are in identical available letter in the same period The different subchannels in road send Probe Response frames, and that is advantageous for avoiding the competition of this multiple AP from touching Hit.It can be seen that the present embodiment such scheme introduce AP can be in the available channel for receiving Probe Request frames Wherein 1 sub-channels reply the innovation mechanism of corresponding Probe Response frames, and this innovation mechanism can be regarded as It is a kind of Probe Response frames reply mechanism of similar asymmetric, this mechanism is relative to conventional symmetrical For formula Probe Response frame reply mechanism, advantageously reduce, and then Advantageously reduce competition expense and the communication resource is wasted, and then be conducive to lifting wireless system overall performance.

Figure 11 is participated in, the embodiment of the present invention also provides a kind of communication system, including：

Access point 1110 and website 1120.Wherein, described access point 1110 can be that the embodiment of the present invention such as is carried For any one access point.Wherein, the website 1120 can be as it is provided in an embodiment of the present invention arbitrarily A kind of website.

The embodiment of the present invention also provides a kind of computer-readable storage medium, and wherein, the computer-readable storage medium can be deposited Program is contained, during the program performing, includes that any one active scan described in said method embodiment is processed The part or all of step of method.

In the above-described embodiments, the description to each embodiment all emphasizes particularly on different fields, without detailed in certain embodiment The part stated, may refer to the associated description of other embodiment.

It should be noted that for aforesaid each method embodiment, in order to be briefly described, therefore which is all stated For a series of combination of actions, but those skilled in the art should know, the present invention is by described The restriction of sequence of movement because according to the present invention, some steps may using other orders or while Carry out.Secondly, those skilled in the art should also know, embodiment described in this description belongs to excellent Select embodiment, the involved action and module not necessarily present invention necessary.

In several embodiments provided herein, it should be understood that disclosed device, which can be passed through Its mode is realized.For example, device embodiment described above is only schematic, such as above-mentioned list The division of unit, only a kind of division of logic function can have other dividing mode, example when actually realizing As multiple units or component can combine or be desirably integrated into another system, or some features can be suddenly Slightly, or do not perform.It is another, shown or discussed coupling each other or direct-coupling or communication link It can be INDIRECT COUPLING or communication connection by some interfaces, device or unit to connect, and can be electrical or which Its form.

It is above-mentioned as separating component explanation unit can be or may not be it is physically separate, as The part that unit shows can be or may not be physical location, you can local to be located at one, or Can also be distributed on multiple NEs.Can select according to the actual needs therein some or all of Unit is realizing the purpose of this embodiment scheme.

In addition, each functional unit in various embodiments of the present invention can be integrated in a processing unit, Can be that unit is individually physically present, it is also possible to which two or more units are integrated in a unit In.Above-mentioned integrated unit both can be realized in the form of hardware, it would however also be possible to employ SFU software functional unit Form is realized.

If above-mentioned integrated unit is realized and as independent production marketing using in the form of SFU software functional unit Or when using, can be stored in a computer read/write memory medium.Based on such understanding, this Part that bright technical scheme is substantially contributed to prior art in other words or the technical scheme it is complete Portion or part can be embodied in the form of software product, and the computer software product is stored in a storage In medium, use so that a computer equipment (can be personal computer, server including some instructions Or the network equipment etc., can be specifically the processor in computer equipment) perform each embodiment of the invention The all or part of step of said method.Wherein, aforesaid storage medium can include：USB flash disk, movement Hard disk, magnetic disc, CD, read only memory (ROM, Read-Only Memory) or random access memory are deposited Reservoir (RAM, RandomAccess Memory) etc. is various can be with the medium of store program codes.

The above, above example only to illustrate technical scheme, rather than a limitation；To the greatest extent Pipe has been described in detail to the present invention with reference to the foregoing embodiments, and one of ordinary skill in the art should manage Solution：Which still can be modified to the technical scheme described in foregoing embodiments, or to which part Technical characteristic carries out equivalent；And these modifications or replacement, take off the essence of appropriate technical solution From the spirit and scope of various embodiments of the present invention technical scheme.

Claims

1. a kind of active scan processing method, it is characterised in that include：

2. method according to claim 1, it is characterised in that described access point can described first The corresponding probe response of the probe request is sent with wherein 1 sub-channels of many sub-channels of channel Frame includes：Described access point randomly choose in many sub-channels of first available channel wherein 1 it is sub Channel sends the corresponding probing response frame of the probe request.

3. method according to claim 1 and 2, it is characterised in that the probe request is carried There is subchannel to divide to indicate；

4. method according to claim 1 and 2, it is characterised in that described access point is described Wherein 1 sub-channels of many sub-channels of one available channel send the corresponding detection of the probe request Before response frame, methods described also includes：Described access point is can use described first based on protocol configuration information Channel is divided into many sub-channels.

5. the method according to any one of Claims 1-4, it is characterised in that the probe requests thereby The value of the basic service unit color fields that frame is carried is arranged to asterisk wildcard or specified color values, described Basic service unit color fields are used for indicating basic service unit.

6. method according to claim 5, it is characterised in that the basic service unit color Field is carried at the efficient signaling-A fields of the high efficiency lead code of the probe request or efficiently believes In order-B field.

7. the method according to claim 5 or 6, it is characterised in that if the probe request The value of basic service unit color fields is arranged to specify color values, then described access point be with it is described The corresponding access point of specified color values.

8. the method according to any one of claim 1 to 7, it is characterised in that described access point exists First available channel receives the website to be included for the acknowledgement frame that the probing response frame sends：It is described Access point receives the website on first available channel with orthogonal frequency in first available channel The acknowledgement frame for the probing response frame that multi-access mode or multicast mode or broadcast mode send.

9. the method according to any one of claim 1 to 8, it is characterised in that

Methods described also includes：

10. a kind of active scan processing method, it is characterised in that include：

Website sends probe request in the first available channel；

11. methods according to claim 10, it is characterised in that described in the described first available letter Road receives institute of the access point in the wherein 1 sub-channels transmission of many sub-channels of first available channel Stating the corresponding probing response frame of probe request includes：Access point is received described in first available channel The probe request that randomly selected 1 sub-channels send in many sub-channels of the first available channel Corresponding probing response frame.

12. methods according to claim 10 or 11, it is characterised in that the probe request is taken Divide with subchannel and indicate, wherein, the subchannel is divided and indicated for indicating that described access point will be described First available channel is divided into many sub-channels.

13. according to claim 10 to 12 any one methods described, it is characterised in that the probe requests thereby The value of the basic service unit color fields that frame is carried is arranged to asterisk wildcard or specified color values, described Basic service unit color fields are used for indicating basic service unit.

14. methods according to claim 13, it is characterised in that the basic service unit color Field is carried at the efficient signaling-A fields of the high efficiency lead code of the probe request or efficiently believes In order-B field.

15. methods according to claim 13 or 14, it is characterised in that if the probe request The value of basic service unit color fields be arranged to specify color values, then described access point is and institute State the corresponding access point of specified color values.

16. methods according to any one of claim 10 to 15, it is characterised in that the website exists First available channel sends the acknowledgement frame for the probing response frame, including：The website is described On first available channel with OFDM mode or multicast mode or broadcast mode send for described The acknowledgement frame of probing response frame.

17. methods according to any one of claim 10 to 16, it is characterised in that

Methods described also includes：

18. a kind of access points, it is characterised in that include：

19. access points according to claim 18, it is characterised in that the transmitting element is specifically used Wherein 1 sub-channels are randomly choosed in many sub-channels in first available channel sends the spy Survey the corresponding probing response frame of claim frame.

20. access points according to claim 18 or 19, it is characterised in that the probe request Carry subchannel and divide instruction；Described access point also includes channels determining unit, for based on the sub- letter Road divides and indicates for first available channel to be divided into many sub-channels.

21. access points according to claim 18 or 19, it is characterised in that

Described access point also includes channels determining unit, for can use described first based on protocol configuration information Channel is divided into many sub-channels.

22. access points according to any one of claim 18 to 21, it is characterised in that

The value of the basic service unit color fields that the probe request is carried be arranged to asterisk wildcard or Specified color values, the basic service unit color fields are used for indicating basic service unit.

23. access points according to claim 22, it is characterised in that the basic service unit color Field is carried at the efficient signaling-A fields of the high efficiency lead code of the probe request or efficiently believes In order-B field.

24. access points according to claim 22 or 23, it is characterised in that if the probe requests thereby The value of the basic service unit color fields of frame is arranged to specify color values, then described access point be with The corresponding access point of the specified color values.

25. access points according to any one of claim 18 to 24, it is characterised in that

26. access points according to any one of claim 18 to 25, it is characterised in that the reception Unit is additionally operable to, and receives the probe request that the website sends in the second available channel；

27. a kind of websites, it is characterised in that include：

28. websites according to claim 27, it is characterised in that described in the described first available letter Road receives institute of the access point in the wherein 1 sub-channels transmission of many sub-channels of first available channel Stating the corresponding probing response frame of probe request includes：Access point is received described in first available channel The probe request that randomly selected 1 sub-channels send in many sub-channels of the first available channel Corresponding probing response frame.

29. websites according to claim 27 or 28, it is characterised in that the probe request is taken Divide with subchannel and indicate, wherein, the subchannel is divided and indicated for indicating that described access point will be described First available channel is divided into many sub-channels.

30. websites according to any one of claim 27 to 29, it is characterised in that the detection please The value of the basic service unit color fields of frame carrying is asked to be arranged to asterisk wildcard or specified color values, institute Basic service unit color fields are stated for indicating basic service unit.

31. websites according to claim 30, it is characterised in that the basic service unit color Field is carried at the efficient signaling-A fields of the high efficiency lead code of the probe request or efficiently believes In order-B field.

32. websites according to claim 30 or 31, it is characterised in that if the probe request The value of basic service unit color fields be arranged to specify color values, then described access point is and institute State the corresponding access point of specified color values.

33. websites according to any one of claim 27 to 32, it is characterised in that described described First available channel sends the aspect of the acknowledgement frame for the probing response frame：Transmitting element specifically for With being directed to that OFDM mode or multicast mode or broadcast mode send on first available channel The acknowledgement frame of the probing response frame.

34. websites according to any one of claim 27 to 33, it is characterised in that the transmission list Unit is additionally operable to send the probe request in the second available channel；

35. a kind of access points, it is characterised in that include：

Processor, memorizer and antenna；

36. access points according to claim 35, it is characterised in that the processor specifically for Wherein 1 sub-channels are randomly choosed in many sub-channels of first available channel sends the detection The corresponding probing response frame of claim frame.

37. access points according to claim 35 or 36, it is characterised in that the probe request Carry subchannel and divide instruction；The processor is additionally operable to be divided based on the subchannel and is indicated described the One available channel is divided into many sub-channels.

38. access points according to claim 35 or 36, it is characterised in that

39. access points according to any one of claim 35 to 38, it is characterised in that the detection The value of the basic service unit color fields that claim frame is carried is arranged to asterisk wildcard or specified color values, The basic service unit color fields are used for indicating basic service unit.

40. access points according to claim 39, it is characterised in that the basic service unit color Field is carried at the efficient signaling-A fields of the high efficiency lead code of the probe request or efficiently believes In order-B field.

41. access points according to claim 39 or 40, it is characterised in that if the probe requests thereby The value of the basic service unit color fields of frame is arranged to specify color values, then described access point be with The corresponding access point of the specified color values.

42. access points according to any one of claim 35 to 41, it is characterised in that

The processor is specifically for receiving the website by the antenna in first available channel and existing With being directed to that OFDM mode or multicast mode or broadcast mode send on first available channel The acknowledgement frame of the probing response frame.

43. access points according to any one of claim 35 to 42, it is characterised in that

The processor is additionally operable to receive the institute that the website sends by the antenna in the second available channel State probe request；It is sub at wherein 1 of many sub-channels of second available channel by the antenna Channel sends the corresponding probing response frame of the probe request；By the antenna in the described second available letter Road receives the acknowledgement frame that the website is sent for the probing response frame.

44. a kind of websites, it is characterised in that include：

Processor, memorizer and antenna；

45. websites according to claim 44, it is characterised in that the processor is used for by institute State antenna first available channel receive access point in many sub-channels of first available channel The corresponding probing response frame of the probe request that randomly selected 1 sub-channels send.

46. websites according to claim 44 or 45, it is characterised in that the probe request is taken Divide with subchannel and indicate, wherein, the subchannel is divided and indicated for indicating that described access point will be described First available channel is divided into many sub-channels.

47. according to any one of claim 44 to 46 website, it is characterised in that the probe requests thereby The value of the basic service unit color fields that frame is carried is arranged to asterisk wildcard or specified color values, described Basic service unit color fields are used for indicating basic service unit.

48. websites according to claim 47, it is characterised in that the basic service unit color Field is carried at the efficient signaling-A fields of the high efficiency lead code of the probe request or efficiently believes In order-B field.

49. websites according to claim 47 or 48, it is characterised in that if the probe request The value of basic service unit color fields be arranged to specify color values, then described access point is and institute State the corresponding access point of specified color values.

50. websites according to any one of claim 44 to 49, it is characterised in that the processor For by the antenna on first available channel with OFDM mode or multicast mode or The acknowledgement frame for the probing response frame that broadcast mode sends.

51. websites according to any one of claim 44 to 50, it is characterised in that the processor It is additionally operable to send the probe request by the antenna in the second available channel；By the antenna in institute Stating the second available channel, to receive access point at wherein 1 of many sub-channels of second available channel The corresponding probing response frame of the probe request that channel sends；It is available described second by the antenna Channel sends the acknowledgement frame for the probing response frame.

52. a kind of communication systems, it is characterised in that include：

Access point as described in claim 18～26 or 35～43 any one, is also included such as claim Website described in 27～34 or 44～51 any one.