CN103428810B - Communication method, receiving method and receiving device of wireless local area network - Google Patents

Abstract

The invention discloses a communication method of a wireless local area network, a receiving method of a wireless local area network and a receiving device of a wireless local area network. The communication method comprise the following steps that: a first channel and a second channel of the wireless local area network are determined, wherein the first channel and the second channel are continuous, wherein the wireless local area network includes a first local area network and a second local area network; all or partial bandwidth of the first channel is utilized to transmit a first beacon frame which includes system information of the first local area network; and all or partial bandwidth of the second channel is utilized to transmit a second beacon frame which includes system information of the second local area network. The communication method, receiving method and receiving device of the wireless local area network provided by the embodiment of the invention can improve frequency spectrum source utilization rate of a system.

Description

A kind of communication means of WLAN, method of reseptance and device

Technical field

The present invention relates to communication technical field, particularly to a kind of communication means of WLAN, method of reseptance and dress Put.

Background technology

WLAN (wlan, wireless local area network) typically adopts ieee 802.11 agreement. One WLAN is typically by an access point (access point, ap) and at least one website (station, sta) group Become.Described ieee 802.11 agreement includes a lot of agreement branches, such as 802.11a, 802.11b, 802.11g and 802.11n Different Deng, application scenarios of different agreement branch or service application type.Such as, the bandwidth of data transfer is different, 802.11n The bandwidth of 40mhz can be supported, 802.11a, 802.11b, 802.11g can support the bandwidth of 20mhz；Working frequency range is different, Supported antenna transmission number is different, and the modulation coding mode difference supported etc..

In 11n system design it is contemplated that backwards compatibility, that is, support 802.11a, the sta of 802.11b, 802.11g is still A 11n system (i.e. a 11n LAN) so can be accessed communicated, just as accessing the system of each of which, that is, Support that 802.11a, the sta of 802.11b, 802.11g do not know that their actual access systems are 802.11n systems.But, support It is impossible to adopt when the sta of 802.11a, 802.11b, 802.11g is communicated with the ap supporting 802.11n by 802.11n system Characteristic with 802.11n.Because, a width of 40mhz of band that 802.11n supports, the band that 802.11a, 802.11b, 802.11g support A width of 20mhz；And supporting 802.11a, the sta of 802.11b, 802.11g passes through 802.11n system and supports the ap of 802.11n When being communicated, the 20mhz only taking up in described 40mhz is communicated, and in addition the bandwidth of 20mhz is wasted.

In the research and practice process to prior art, it was found by the inventors of the present invention that supporting 802.11a, When the sta of 802.11b, 802.11g is communicated with the ap supporting 802.11n by 802.11n system, only take up described 20mhz in 40mhz is communicated, and wastes the bandwidth of other 20mhz, reduces network throughput, thus reducing frequency spectrum The utilization rate of resource.

A kind of communication means of WLAN, method of reseptance and device is provided in the embodiment of the present invention, existing to solve There is the low technical problem of system spectral resources utilization rate in technology.

For solving above-mentioned technical problem, the embodiment of the present invention provides a kind of communication means of WLAN, methods described Including:

Determine the first channel and the second channel of WLAN wlan, wherein, described first channel and second channel Continuously；Described WLAN includes the first LAN and the second LAN；

All or part of bandwidth using described first channel sends the first beacon frame, and described first beacon frame includes described The system information of the first LAN；

All or part of bandwidth using described second channel sends the second beacon frame, and described second beacon frame includes described The system information of the second LAN.

The embodiment of the present invention also provides a kind of communicator of WLAN, comprising:

Determining unit, for determining the first channel and the second channel of WLAN wlan；Wherein, described first letter Road and second channel are continuous；Described WLAN includes the first LAN and the second LAN；

First transmitting element, for sending the first beacon frame using all or part of bandwidth of described first channel, described First beacon frame includes the system information of the first LAN；

Second transmitting element, for sending the second beacon frame using all or part of bandwidth of described second channel, described Second beacon frame includes the system information of the second LAN.

The embodiment of the present invention also provides a kind of data receiver method, and methods described includes:

Receive the website in the first LAN and pass through the first access that the first channel sends after the first beacon frame is detected Request；And the website receiving in the second LAN accesses by second channel sends second after the second beacon frame is detected Request；Wherein, described first channel and second channel are continuous channel, described WLAN in WLAN wlan Network includes the first LAN and the second LAN；

Pass through the first access response that the first channel sends to the website in described first LAN；And to described second The second access response that website in LAN is sent by second channel；

Receive the data that the website in the first LAN sends by the first channel, and receive second by second channel The data that website in LAN sends.

The embodiment of the present invention also provides a kind of data sink, including

First receiving unit, passes through the first letter for receiving the website in the first LAN after the first beacon frame is detected The first access request that road sends；And the website receiving in the second LAN passes through second after the second beacon frame is detected and believes The second access request that road sends；Wherein, described first channel and second channel are continuous channel, institute in WLAN State WLAN and include the first LAN and the second LAN；

Transmitting element, for passing through, to the website in described first LAN, the first access response that the first channel sends； And responded to the website in described second LAN by the second access that second channel sends；

Second receiving unit, for receiving the data that the website in the first LAN sends, Yi Jitong by the first channel Cross the data that second channel receives the website transmission in the second LAN.

From technical scheme disclosed above, in the embodiment of the present invention, access point is transmitted different by different channels Beacon frame, to set up different wlan, in order to support different bandwidth protocol site sta(such as, 802.11n sta, 802.11a sta, 802.11b sta, 802.11g sta) same access point can be accessed by different wlan, solve existing Because different agreement website sta is by same channel access access point in technology, and lead to system spectral resources utilization rate Low technical problem.That is, in the embodiment of the present invention, ap can send different beacon frames to not by different channels With the website in LAN, in order to described website, this ap is accessed by corresponding channel (LAN), and corresponding by it Channel is communicated, and improves system spectral resources utilization rate.

Brief description

In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to institute in embodiment Need use accompanying drawing be briefly described it should be apparent that, drawings in the following description be only the present invention some enforcement Example, for those of ordinary skill in the art, on the premise of not paying creative work, can also obtain according to these accompanying drawings Obtain other accompanying drawings.

Fig. 1 is a kind of flow chart of the communication means of WLAN provided in an embodiment of the present invention；

Fig. 2 is a kind of flow process of the first application example of the communication means of WLAN provided in an embodiment of the present invention Figure.

Fig. 3 is the schematic diagram that two systems provided in an embodiment of the present invention send beacon frame simultaneously；

Fig. 4 is the schematic diagram sending beacon frame when two systems provided in an embodiment of the present invention are different；

Fig. 5 is the schematic diagram of the completely overlapped alignment of ofdm character boundary provided in an embodiment of the present invention；

Fig. 6 be ofdm character boundary provided in an embodiment of the present invention partly overlap and section aligned schematic diagram；

Fig. 6 a is that a kind of time span that alternately arranges in two wlan provided in an embodiment of the present invention makes any moment Website all in only one of which wlan sends the schematic diagram of data to ap；

Fig. 7 is a kind of flow process of the second application example of the communication means of WLAN provided in an embodiment of the present invention Figure；

Fig. 8 sends beacon frame schematic diagram overlapping in time for embodiment of the present invention two systems；

Fig. 9 sends beacon frame nonoverlapping schematic diagram in time for embodiment of the present invention two systems；

Figure 10 is a kind of application interaction diagrams of the communication means of WLAN provided in an embodiment of the present invention；

Figure 11 is a kind of structural representation of the communicator of WLAN provided in an embodiment of the present invention；

Figure 12 is a kind of flow chart of data receiver method provided in an embodiment of the present invention；

Figure 13 is a kind of structural representation of data sink provided in an embodiment of the present invention.

Specific embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Whole description is it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.It is based on Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of not making creative work Embodiment, broadly falls into the scope of protection of the invention.In embodiments of the present invention, described first LAN is the first wireless local Net, and the second LAN be the second WLAN.

Refer to Fig. 1, Fig. 1 is a kind of flow chart of the sending method of beacon frame provided in an embodiment of the present invention, described side Method includes:

Step 101: determine the first channel and the second channel of WLAN, wherein, described first channel and second Channel is continuous；Described WLAN includes the first LAN and the second LAN；

Wherein, in this step, a kind of determination mode is: access point (ap, access point) selects WLAN Network (wlan, wireless local area network) needs the channel width using；Described channel width is divided into One channel width and second channel bandwidth, and the first channel width and second channel bandwidth are continuous in frequency.That is, really Determine the channel width place frequency that WLAN (wlan, wireless local area network) needs use Whole story position, described channel width is divided into the first channel width and second channel bandwidth by the whole story position according to described frequency； Wherein said first channel width is the first channel of described WLAN；And a width of described nothing of described second channel band The second channel of line LAN.Such as, WLAN (wlan, the wireless local area of selection Network the channel width using) is needed to be 40mhz, residing frequency location is 2422mhz ~ 2462mhz, then the first channel Can be 2422mhz ~ 2442mhz, second channel can be 2442mhz ~ 2462mhz.

Step 102: the first beacon frame, described first beacon are sent on all or part of bandwidth using described first channel Frame includes the system information of the first LAN；Send the second beacon using in all or part of bandwidth of described second channel Frame, described second beacon frame includes the system information of the second LAN.

The corresponding LAN of 802.11 serial protocols and a beacon frame (beacon) are corresponding, 802.11 serial protocols The beacon frame (beacon) of corresponding system (or LAN) is all to take 20mhz bandwidth to send, and ap sends on the first channel The corresponding beacon frame (beacon) 1 of first LAN (wlan 1), this first LAN can be a 802.11n LAN, Information content in this beacon should comprise the content that the beacon that all 802.11n standard agreements specify should comprise, main To be system information or the parameter of this 802.11n wlan, the ability information of such as ap, this wlan service set (serviceset identifier, ssid), the main channel (primary channel) of this wlan and auxiliary channel (secondary channel) configured information etc..For the 802.11n wlan illustrating here, the first channel is this wlan Main channel, second channel can be indicated as the auxiliary channel of this wlan.

Ap sends the corresponding beacon frame beacon2 of the second LAN (wlan 2), this second LAN on a second channel Can be a 802.11a/b/g wlan, that is, this beacon2 includes the system information of 11a/b/g wlan；Or, this second LAN can be the 802.11n wlan of 20mhz for a system bandwidth, and that is, described beacon2 is a 802.11n The beacon of 20mhz bandwidth system；For 20mhz wlan, just there is no the concept of primary/secondary channel, beacon sends the letter being located Road is exactly the working channel of this wlan.Can see, the working channel of wlan 2 is identical with the auxiliary channel of wlan 1, i.e. wlan 2 Working channel and the working channel (include primary/secondary channel) of wlan 1 have overlap, all correspond to WLAN second is believed Road.

In this step, the first beacon frame can be sent to the first website by described first channel periodicity by ap, and first Website accesses the website in wlan 1；Described second beacon frame can also be periodically sent to second station by second channel Point, the second website accesses the website in wlan 2；Or the first beacon frame is sent out by described first channel periodicity simultaneously Give the first website；And the second beacon frame is periodically sent to the second website by second channel, the present embodiment does not limit System.

Optionally, described transmission the first beacon frame and the second beacon frame overlapping in time that is to say, that when using described First channel send described first beacon frame with using described second channel transmission the second beacon frame overlapping in time when, by institute State the first beacon frame and the second beacon frame OFDM ofdm symbol time initiate and cut-off boundary alignment.

Methods described can also include: described transmission the first beacon frame and the second beacon frame are non-overlapping in time, also It is to say, send described first beacon frame using described first channel and send the second beacon frame in the time with using described second channel Upper non-overlapping.

Optionally, if described first channel and second channel are respectively the channel of 20mhz bandwidth, and the first channel and the Two channels are continuous；

Described whole bandwidth using described first channel send the first beacon frame, and described first beacon frame includes first game The system information of domain net, the system information of described first LAN includes: described first LAN is system bandwidth is 40mhz The information of 802.11nwlan, and the information of the auxiliary channel that instruction second channel is described 802.11n wlan；Certainly, also may be used To include other information.

Whole bandwidth of described utilization second channel send the second beacon frame, and described second beacon frame includes the second LAN System information, the system information of described second LAN includes: described second LAN is system bandwidth is 20mhz 802.11a or 802.11b or the information of 802.11g or 802.11n wlan.It is, of course, also possible to inclusion other information.

Optionally, if described first channel and second channel are respectively the channel of 40mhz bandwidth, and the first channel and the Two channels are continuous；

The described fractional bandwidth using described first channel sends the first beacon frame, and described first beacon frame includes first game The system information of domain net, the system information of described first LAN includes: described first LAN is system bandwidth is 80mhz The information of 802.11acwlan, and the letter of the auxiliary 40mhz channel that the described second channel of instruction is described 802.11ac wlan Breath；

The described fractional bandwidth using described second channel sends the second beacon frame, and described second beacon frame includes second game The system information of domain net, the system information of described second LAN includes: described second LAN is system bandwidth is 20mhz The information of 802.11a, 802.11b, 802.11g, 802.11n or 802.11ac wlan, or, described second LAN is to be Regiment commander's wide (system all available work channel) is the information of the 802.11n or 802.11ac wlan of second channel 40mhz；

If described first channel and second channel are respectively the channel of 80mhz bandwidth；

The system information of described first LAN includes: described first LAN is system bandwidth is 160mhz The information of 802.11acwlan, and the letter of the auxiliary 80mhz channel that the described second channel of instruction is described 802.11ac wlan Breath；

The system information of described second LAN at least includes: described second LAN is system bandwidth is 20mhz The information of 802.11a, 802.11b, 802.11g, 802.11n or 802.11ac wlan, or, described second LAN is to be Command the information of the 802.11n or 802.11ac wlan of a width of second channel 40mhz, or, described second LAN is system Bandwidth (system all available work channel) is the information of the 802.11ac wlan of second channel 80mhz.

Optionally, methods described can also include: by all or part of bandwidth of described first channel by the first data Frame is sent to the website accessing in the first LAN；By all or part of bandwidth of described second channel, the second Frame is sent out Give the website accessing in the second LAN；Wherein, described transmission the first Frame and the second Frame have overlap in time When, the ofdm symbol time start-stop alignment of lap.

Optionally, after the first channel determining WLAN wlan and second channel, methods described can also be wrapped Include: call duration time is divided into continuously multiple time periods；In each described time period, indicate the first LAN and second game Website at least one LAN in the net of domain must not compete the right to use of the working channel in the affiliated LAN of described website.

Wherein, in described instruction the first LAN and the second LAN the website at least one LAN must not compete right Answer the right to use of the working channel of at least one LAN described, specifically include: for each time period, described at least one Send frame on the working channel of individual LAN, a time span is set in the frame head of described frame, described time span can cover Each time period described,.

Wherein, frame is sent on the working channel of at least one LAN described, described frame is cts-to-self frame.

In this embodiment, described call duration time, in theory, as long as ensure the running of WLAN In, the website being not in the first LAN and the second LAN sends out any time of data simultaneously to ap.Such as, network Set up the moment, for another example ap start moment etc., the present embodiment is not restricted.

Described call duration time or the one section of call duration time taking from whole communication process, this call duration time includes Continuously multiple time periods, each time period ensures that the website of most only one of which LANs may competitive channel.

In the embodiment of the present invention, access point transmits different beacon frames by different channels, to set up different wlan, with Be easy to support different bandwidth protocol site sta(such as, 802.11n sta, 802.11a sta, 802.11b sta, 802.11gsta) same access point can be accessed by different wlan, solve in prior art because of different agreement website sta all It is by same channel access access point, and lead to the low technical problem of system spectral resources utilization rate.That is, this In bright embodiment, ap can send different beacon frames to the website in LAN by different channels, in order to institute State website and this ap is accessed by corresponding channel (LAN), and communicated by its corresponding channel, improve system frequency Spectrum resource utilization rate.

Further, in order to simplify the requirement of receiver further, ap determines in following period of time it is allowed in which wlan Website participate in competition respective channels take respective channels, instruction is not intended to participate in the website in the wlan of competition respective channels Respective channels are busy condition.Only need to be performed an action and just can receive the data that the website in wlan 1 may send, Enormously simplify the receiver of ap side.

For the ease of the understanding of those skilled in the art, to be illustrated with specific application example below.

Refer to Fig. 2, be a kind of the first application example of the communication means of WLAN provided in an embodiment of the present invention Flow chart, in this embodiment, channel width (i.e. system bandwidth, or the available work band of WLAN with 40mhz Wide) as a example, but it is not limited to this, methods described includes:

Step 201: the channel width of 40mhz is divided into the channel width of two continuous 20mhz, and determines first The channel width of 20mhz is the main channel of 802.11n wlan；The channel width of second 20mhz is the auxiliary of 802.11n wlan Channel；In the present embodiment first and second do not represent any position relationship；

That is, the wlan of a 802.11n, its system bandwidth can be 20mhz or 40mhz.In this embodiment In, firstly, it is necessary to determine this taking the wlan that ap determines the 40mhz bandwidth that will set up (set up) 802.11n as a example 40mhz frequency spectrum place frequency location, i.e. frequency cutoff position, such as, 2422mhz ~ 2462mhz；Then, this 40mhz frequency Spectrum be made up of two continuous 20mhz, ap it needs to be determined that in this 40mhz which 20mhz be the main channel of this wlan, which 20mhz is the auxiliary channel of this wlan.

Step 202:ap is in the main channel (i.e. first 20mhz channel) determining upper transmission beacon1, described beacon1 Beacon for a 802.11n 40mhz bandwidth system；

Referred to below as step 201, the inner corresponding 802.11n wlan of step 202 is wlan 1.Described beacon 1 is one The beacon of 802.11n 40mhz bandwidth system, represents that the information content in this beacon 1 should comprise all 802.11n marks The content that the beacon of the 40mhz wlan that quasi- agreement specifies should comprise, be mainly the system information of this 802.11n wlan/ The ability information of parameter, such as ap, this wlan service set (service set identifier, ssid), this wlan's Main channel (primary channel) and auxiliary channel (secondary channel) configured information etc..For illustrate here 802.11n wlan, first 20mhz channel is the main channel of this wlan, and second 20mhz channel can be indicated as this The auxiliary channel of wlan.In addition, for website, each channel of station scans, if detect one of beacon(such as Beacon), then this website just can know that there is a wlan in its position region, such that it is able to select to access one of them Wlan, the access process between concrete website and beacon refers to existing procedure.

Step 203:ap is one in auxiliary channel (i.e. second 20mhz channel) upper transmission beacon2, described beacon2 802.11a the or 802.11b or beacon of 802.11g system, or be a 802.11n 20mhz bandwidth system beacon；

Wherein, the beacon that the present embodiment sends on second 20mhz channel is with a 11n 20mhz bandwidth system As a example beacon (referred to below as this corresponding wlan of beacon 2 is wlan 2), that is, wlan 2 is the wlan of a 11n, this wlan Workable bandwidth is 20mhz to the maximum.

In this embodiment, step 202 and step 203 do not have sequencing in time.It is of course also possible to send out simultaneously Send, the present invention is not restricted.

The beacon of such as two systems (is 40mhz wlan 1, and is 20mhz wlan 2) is periodically Ground sends.Two systems send beacon frame in time can be overlapping, and its corresponding schematic diagram is as shown in Figure 3；Can not also Overlap, as shown in figure 4, wherein, Fig. 3 sends the schematic diagram of beacon frame for embodiment of the present invention two systems simultaneously；Fig. 4 is this The schematic diagram of beacon frame is sent when bright embodiment two systems are different.

It should be noted that 802.11 agreement branches are substantially all using ofdm signal modulation mode.For adopting ofdm The system of signal modulation mode, a packet from the time, by one or more ofdm symbols (include Cyclic Prefix, Cyclic prefix, cp) composition；From frequency, the corresponding frequency spectrum of system is divided into multiple subcarrier (subcarrier Or tone).

When alternatively, having overlapping in time for the beacon of two systems, the beacon frame of two systems Ofdm symbol cutoff border needs alignment (or referred to as synchronous).In order to eliminate the interference between system, i.e. for access 40mhz11n system wlan 1 can support 40mhz packet receive/send 11n terminal (or 11n website) it is possible to When product is realized, 11n terminal receives link always to be processed according to 40mhz.Now, even if the beacon of 40mhz system It is to send on the primary channel by 20mhz, 11n terminal also can receive process whole 40mhz, and if 40mhz system 20mhz system beacon2 of beacon 1 overlapping in time (noting not overlapping in frequency) does not have ofdm symbol aligned, 20mhz system beacon2 can produce interference to 40mhz system beacon1, and this disturbs as ofdm inter-sub-carrier interference；And such as The beacon of fruit two systems is ofdm symbol aligned, then according to ofdm know-why, theoretically do not interfere with.But It is, the ofdm symbol aligned in the present embodiment to be not intended to limit each of one of packet in two packets Ofdm symbol is all corresponding with one of another packet ofdm symbol and aligns, and only requires that two packets had from the time Overlapping part, ofdm character boundary is to align.Schematic diagram such as Fig. 5 institute of its completely overlapped alignment of ofdm character boundary Show, its ofdm character boundary partly overlaps and the schematic diagram of section aligned is as shown in Figure 6.Wherein, in 802.11 agreements, data Bag (including beacon) is divided into leading part (preamble) data part.In order to optimize the reception processing of terminal further, It is alternatively possible to the original position of the beacon of further requirement two systems can not be alignd as shown in fig. 6, namely two The leading part of beacon can not be completely overlapped.

Certainly, in this embodiment, if 11n terminal is when realizing, its receives link is according to receiving data bag Actual transmission bandwidth adjusting the signal receiving much bandwidth, then do not need this requirement of ofdm symbol aligned because Another one 20mhz beacon2 is filtered off outside, will not form interference.

Website (such as one is 11n website, and another is 11a website) in step 204:ap and two wlan is led to Letter.

In this step, after ap have sent 40mhz system beacon1 and 20mhz system beacon2, a website passes through Scan each channel, one of beacon typically can be at least detected, then this website just can know that its position region At least one wlan, the access process tool such that it is able to select to access one of wlan, between concrete website and beacon Body refers to the existing procedure of 802.11a or 802.11b or 802.11g or 802.11n.

After website accesses wherein certain wlan, website just can be communicated with the other websites under ap and this wlan ?.In concrete communication process, for website, website receiving data and send data, and prior art is just the same, because Website be not aware that ap be using the present invention program work that is to say, that from wlan1 or wlan2 individually from the point of view of, each Communication in single wlan in communication in wlan and prior art, for (non-ap) website, as broad as long.

For ap sends data to website, there is following several situation:

Situation 1:ap sends the data of 40mhz bandwidth to website in 40m system wlan1, it is naturally required that as receiving terminal Website needs the ability supporting 40mhz data；

Situation 2:ap sends the data of 20mhz bandwidth to website in 40mhz system wlan1 in the main channel of this wlan1, It is naturally required that the website as receiving terminal needs the ability supporting 20mhz data；

Situation 3:ap (corresponds to 40mhz system to website in 20mhz system wlan2 in the working channel of this system The 20mhz of the auxiliary channel of wlan1) send 20mhz bandwidth data, it is naturally required that the website as receiving terminal needs support The ability of 20mhz data；

Situation 4:ap sends the data of 20mhz bandwidth to website in 40mhz system wlan1 in the main channel of this wlan, Above send 20mhz number in second 20mhz channel (i.e. working channel of this wlan) to website in 20mhz system wlan2 simultaneously According to；

Simply list above in technical solution of the present invention, ap sends, to website, the situation that data can be supported, but and must not All scenario is asked necessarily to actually occur.Wherein, situation 2,3 typically take place in the less situation of data volume；When data volume is more When, technical solution of the present invention can support situation Isosorbide-5-Nitrae, and that is, channel resource is fully utilized.

Alternatively, when practical application situation 4 occurs it is desirable to 40mhz system is sent on the main channel of wlan1 The 20mhz packet of website in wlan1, and the 20mhz packet being sent to website in this system in 20mmhz system wlan2 The ofdm character boundary alignment (certainly, having allowed error under practical situation) comprising respectively.It should be noted that the present embodiment is simultaneously Do not limit each of one of packet in two packets ofdm symbol all with other in which packet in One ofdm symbol corresponds to and aligns, and only requires two packets part overlapping from the time, and ofdm character boundary aligns ?.The reason this requires and benefit etc. have situation during overlap the same with two beacon, repeat no more.Wherein, exist In 802.11 agreements, packet (including beacon) is divided into leading part (preamble) data part.In order to excellent further Change the reception processing of terminal, it is alternatively possible to further requirement is sent in 40mhz system wlan1 in the main channel of wlan1 The 20mhz packet of website, and be sent in 20mmhz system wlan2 website in this system 20mhz packet initial Can not align in position, namely the leading part of two packets can not be completely overlapped.

For website sends data to ap, there is following several situation:

Situation 1: only the website in 40mhz system wlan1 sends data to ap, described packet is 40mhz packet；

Situation 2: only the website in 20mhz system wlan2 sends 20mhz number on the 20mhz working channel of this system According to；

Situation 3: only the website in 40mhz system wlan1 sends 20mhz data to ap in its main channel；

Situation 4: in existing 40mhz system wlan1, website sends 20mhz data to ap in its main channel simultaneously, has again In 20mhz system wlan2, website sends 20mhz data to ap；

It is separate for accessing between 20mhz wlan2 and the website of system accessing 40mhz wlan1, and for For 802.11a, 802.11b, 802.11g or 802.11n system, website sends the absolute time of data to ap, and ap is cannot Control, above-mentioned 4 kinds of situations all it may happen that.So, especially, when situation 4 occurs, in 20mhz system wlan2 The data that website sends to ap, typically can't send to ap in its main channel with the website in 40mhz system wlan1 Data, in ofdm symbol aspect align.Thus, ap can not be with the receives link of a 40mhz two 20mhz data one Play (disposable) to receive, because because ofdm symbol does not have boundary alignment, having and interfere.And, ap can not carry Before know it can is any situation of 4 kinds of situations on earth, preferably, therefore, the receiver of ap side needs to complete following three simultaneously Individual action: only receive the data in the main channel of 40mhz system wlan 1, only receive the number on 20mhz system wlan 2 channel According to, and receive the data in whole 40mhz bandwidth.

Further, it is desirable to the receiver of ap side needs to complete three actions simultaneously in above-described embodiment.In order to enter one Step simplifies requirement to receiver, and alternatively, the present embodiment can further include following steps:

Ap determines in following period of time it is allowed to the website in which wlan participates in competition respective channels and takies corresponding letter Road, the website respective channels that instruction is not intended to participate in the wlan of competition respective channels are busy condition.For example, some time period The website that t, ap are not intended in wlan 2 participates in the working channel of competition wlan 2, and the present embodiment is second 20mhz channel, The working channel that so can indicate website wlan 2 in wlan 2 is busy condition.Website wlan in concrete instruction wlan2 2 working channel is that the method for busy condition includes but is not limited to: on sending beacon 2 identical channel, the present embodiment is Second 20mhz channel, sends a frame, indicates a time span in this frame frame head, and this time span makes from this frame Original position or end position start to clock, indicated time span can cover described " some time period t "；Especially Ground, this frame can be the inner cts-to-self(clear to send-to- of 802.11 agreements (such as 802.11b/g/n) Self) frame.

Wherein, inner in 802.11 agreements (such as 802.11b/g/n), website judges that channel is that the method for busy or not busy state has Two kinds: one is that physics is intercepted, and two is virtual intercepting.Physics is intercepted and is referred to that website judges by carrying out energy measuring on channel Whether there are other websites or ap to be currently in use channel transmission signal, if having, judging that channel, for busy condition, otherwise, judges channel For not busy state；Only until channel spare time state, website just can remove competitive channel.Virtual intercepting refers to website according to reception demodulation To frame frame head in time span indicate to determine whether following a period of time is busy condition, if can be referred in frame head The time period that the time span shown covers is judged as busy condition；Website in the time period being judged as busy condition can be without Go physics to intercept channel, also will not remove competitive channel.Certainly, above two method can also be used in combination with.And for For the website of wlan 1, because the frame of setting time span is to send on its auxiliary channel, according to 802.11n agreement, Website in wlan 1 is without the time span setting comprehended on auxiliary channel, does not apply the virtual side of intercepting on auxiliary channel Method, only uses physics intercepting method；And the busy-idle condition for main channel judges, the website in wlan 1 can be intercepted in conjunction with physics Intercept with virtual；This is just the same with the working mechanism of existing 802.11n agreement, even judges that main channel is busy condition, Website in wlan 1 not competitive channel, if judging, main channel for not busy state, intercept as busy condition by auxiliary Channel Physical, can Send data only to compete main channel, be also not busy state if judging main channel auxiliary Channel Physical being intercepted for not busy state, can To compete, data is sent on main and auxiliary channel simultaneously.Therefore, there is no any impact for the channel competition mechanism in wlan1, As long as the website in wlan 1 judges that channel just can remove competitive channel for not busy state, and busy channel sends data to ap.That That is to say, that inner in " some time period t ", for ap sends data (alternatively referred to as descending dl) to website, do not have Any impact, 4 kinds of situations all it may happen that；And for website sends data (alternatively referred to as up ul) to ap, be only possible to There is the website in wlan 1 to send data to ap, that is, be only possible to situation 1 and situation 3.Thus the receiver of ap side only need to and Prior art ap set up wlan 1 working mechanism the same it is only necessary to complete website that an action receives in wlan 1 may The data sending, such as only completes an action and receives the data in whole 40mhz bandwidth.With respect to completing before simplifying Three actions, enormously simplify the receiver of ap side.

Again for example, some time period t, the website that ap is not intended in wlan 1 participates in the working channel of competition wlan 1, The working channel that so can indicate website wlan 1 in wlan 1 is busy condition.Website wlan in concrete instruction wlan 1 1 working channel is that the method for busy condition includes but is not limited to: on sending beacon 1 identical channel, send a frame, Indicate a time span in this frame frame head, this time span makes to start to remember from the original position of this frame or end position When, indicated time span can cover described " some time period t "；Especially, this frame can be 802.11 agreements (ratio As 802.11b/g/n) inner cts-to-self frame.With the preceding paragraph in the same manner, after the website in wlan 1 receives this frame, if Time span in this frame frame head can cover described " some time period t ", then the website in wlan 1 judges main channel (including auxiliary channel) is busy condition, thus not removing competitive channel.And the website in wlan 2 can't receive such time and set Putting, thus not affecting on the website in wlan 2, can go to compete the working channel of wlan 2, the present embodiment is second 20mhz channel.So that is to say, that inner in " some time period t ", to website, data is sent for ap (alternatively referred to as descending Dl, for), there is no any impact, 4 kinds of situations all it may happen that；And to ap, data (alternatively referred to as up ul) is sent for website For, the website being only possible in wlan 2 sends data to ap, that is, be only possible to situation 2.That is, the receiver of ap side Only need to set up that wlan 2 working mechanism is the same to be received in wlan 2 it is only necessary to complete an action with prior art ap The data that website may send.With respect to simplify before complete three actions, enormously simplify the receiver of ap side.

Sum it up, increase above step not affecting so that sending data for ap to website, and for station Point sends data to ap so that some period only can be possible to website in one of wlan sends data to ap, from And ap side receiver can be simplified.As shown in Figure 6 a, Fig. 6 a is one kind provided in an embodiment of the present invention alternately in two wlan Setting time span make website in all only one of which wlan of any moment to ap send data schematic diagram that is to say, that This in figure, alternately arranges time span so that the website in all only one of which wlan of any moment may in two wlan Data can be sent to ap such that it is able to simplify ap side receiver.Wherein, shown in " allowing website in wlan1 to send data to ap " Time period ap can according to circumstances thereto in a wlan website send data it is also possible to website is sent out in two wlan simultaneously Send data；But website can send data to ap in only wlan1.When shown in " allowing website in wlan2 to send data to ap " Between section be similar to.

In addition, in 802.11 current protocol suites, 802.11ac supports more characteristics than 802.11n, such as The bandwidth that 802.11ac can support has 20mhz, 40mhz, 80mhz, 160mhz.Therefore, if a 802.11ac's In 80mhz or 160mhz wlan, the sta having sta and 802.11n of 802.11ac is concurrently accessed, then when 802.11n takies During channel communication, it at most can only take 40mhz channel, and remaining frequency spectrum is wasted.The so problem of presence and above reality Apply example to be similar to, spectrum efficiency can be improved with similar method.

Also refer to Fig. 7, be that a kind of the second application of the communication means of WLAN provided in an embodiment of the present invention is real The flow chart of example, this embodiment so that 11ac wlan system bandwidth is as 80mhz as a example illustrates, specifically includes:

Step 701:ap determines the 80mhz system bandwidth place frequency location of 11ac wlan, and 80mhz system bandwidth is by two Individual continuous 40mhz channel composition, 40mhz channel based on one of them, 40mhz channel supplemented by another；Wherein, main 40mhz In comprise main 20mhz channel；Beacon 1 is sent on main 20mhz channel, described beacon 1 is a 11ac 80mhz band The beacon of wide system；I.e. the information in this beacon should comprise beacon that all 802.11ac standard agreements specify should The information comprising.

Specifically, the wlan of a 802.11ac, its system bandwidth can be 20mhz, 40mhz, 80mhz and 160mhz. Ap determines the wlan of the 80mhz bandwidth that will set up (set up) 802.11ac it is necessary first to determine that this 80mhz frequency spectrum is located Frequency location, i.e. frequency cutoff position；Next, this 80mhz frequency spectrum is made up of two continuous 40mhz, one of 40mhz channel based on 40mhz, 40mhz channel supplemented by another, based on the one of 20mhz channel in main 40mhz channel 20mhz channel.Referred to below as this 11ac 80mhz wlan is wlan 1.

Step 702:ap is one of in the corresponding 40mhz channel of auxiliary 40mhz channel of 11ac 80mhz wlan1 20m sends beacon 2, and described beacon 2 is the beacon of 802.11a or 802.11b or 802.11g system, or For the beacon of a 802.11n or 802.11ac 20mhz bandwidth system, or a 802.11n or 802.11ac 40mhz The beacon of bandwidth system；

Specifically, when step 702 inner foundation is when being 802.11n or ac hzwlan, its corresponding beacon2 place 20mhz Channel is this 802.11n or ac wlan main 20mhz channel, and in addition 20mhz is this 802.11n or ac wlan auxiliary 20mhz channel.

In order to describe conveniently, below the wlan of inner for step 702 foundation is referred to as wlan 2, and with this wlan 2 be To illustrate as a example 11n40mhz wlan.It should be noted that step 701 and step 702 do not have sequencing in time, Can carry out simultaneously.

Specifically, the beacon of two systems (is 80mhz 11ac wlan1, and is wlan 2) is respectively Periodically send.Two systems send beacon frame in time can be overlapping, as shown in Figure 8 it is also possible to not overlapping, such as schemes Shown in 9.Fig. 8 sends beacon frame schematic diagram overlapping in time for embodiment of the present invention two systems；Fig. 9 is that the present invention is real Apply a two systems and send beacon frame nonoverlapping schematic diagram in time.

In addition, 802.11 agreement branches are substantially all using ofdm signal modulation mode.For using ofdm signal modulation The system of mode, a packet from the time, by one or more ofdm symbols (include Cyclic Prefix, Cyclicprefix, cp) composition；From frequency, the corresponding frequency spectrum of system be divided into multiple subcarriers (subcarrier or Person tone).When alternatively, having overlapping in time for the beacon of two systems, the beacon frame of two systems Ofdm symbol cutoff border needs alignment (or referred to as synchronous).The benefit so considering is, for access 80mhz11ac Wlan1 system can support 11ac terminal (or website, similarly hereinafter) that 80mhz packet receives/send it is possible to real in product When existing, 11ac terminal receives link always assumes that 80mhz to process.Now, though the beacon of 80mhz system be by 20mhz sends on main 20mhz channel, and 11ac terminal also can receive process whole 80mhz, and if 80mhz system The beacon2 of beacon1 wlan 2 overlapping in time does not have ofdm symbol aligned, and the beacon2 of wlan 2 can be to 80mhz System beacon1 produces interference, and this disturbs as ofdm inter-sub-carrier interference；And if the beacon of two systems is ofdm symbol Number alignment, then according to ofdm know-why, theoretically do not interfere with.It should be noted that ofdm symbol aligned, and Be not limit each of one of packet ofdm symbol in two packets all with other in which packet in Ofdm symbol corresponding and align, only require two packets part overlapping from the time, ofdm character boundary pair Neat.Wherein, in 802.11 agreements, packet (including beacon) is divided into leading part (preamble) data part. In order to optimize the reception processing of terminal further, it is alternatively possible to the original position of the beacon of further requirement two systems Can not align, namely the leading part of two beacon can not be completely overlapped.

Certainly, if 11ac terminal is when realizing, its receives link is the actual transmission band according to receiving data bag Width receives the signal of much bandwidth to adjust, then do not need this requirement of ofdm symbol aligned, because wlan 2 Beacon2 is filtered off outside, will not form interference.

Website in step 703:ap and two wlan is communicated.

Specifically, after ap have sent 80mhz system wlan1 beacon1 and wlan 2 beacon2, a website passes through Scan each channel, one of beacon typically can be at least detected, then this website just can know that its position region At least one wlan, such that it is able to select to access one of wlan, the access process between concrete website and beacon can To refer to 802.11a/b/g/n/ac existing procedure, will not be described here.

After website accesses certain wlan therein, website just can be led to the other websites under ap and this wlan Believe.Concrete communication process, for website, just the same in website receiving data and transmission data, and prior art, because For, website be not aware that ap be using the present invention program in work that is to say, that from wlan1 or wlan2 individually from the point of view of, often Communication in single wlan in communication in individual wlan and prior art, for (non-ap) website, as broad as long.

And for ap sends data to website, at least following several situations:

Situation 1:ap sends the data of 80mhz bandwidth to website in 80mhz system wlan1, it is naturally required that as receiving terminal Website need support 80mhz data ability；

Situation 2:ap sends the data of 40mhz bandwidth on main 40mhz channel to wlan1 website in 80mhz system, certainly Require to need the ability supporting 40mhz data as the website of receiving terminal；

Situation 3:ap (corresponds to the auxiliary 40m of 80mhz system wlan1 to the inner website of wlan 2 in this system working channel Channel) send 40mhz bandwidth data, it is naturally required that as receiving terminal website need support 40mhz data ability；

Situation 4:ap sends the data of 40mhz bandwidth on main 40mhz channel to website in 80mhz system wlan1, simultaneously To wlan 2 website, 40mhz data is sent on this system wlan2 corresponding 40mhz working channel；

Simply list above in the present invention program, ap sends data to, to website, the situation that can support less, but and must not All scenario is asked necessarily to actually occur.

Alternatively, when practical application situation 4 it is desirable to be sent to website on the main 40mhz channel of 11ac 80mhz system 40mhz packet and be sent to the ofdm symbol that the 40mhz packet of website in this system comprises respectively in wlan 2 and need Want boundary alignment (certainly, having allowed error under practical situation).Note, be not intended to limit the one of data in two packets Each of bag ofdm symbol is all corresponding with one of other in which packet ofdm symbol and aligns, and only requires two Packet part overlapping from the time, ofdm character boundary is alignment.The reason this requires and benefit etc. and two Individual beacon has situation during overlap the same, repeats no more.Wherein, in 802.11 agreements, before packet (including beacon) is divided into Lead part (preamble) data part.In order to optimize the reception processing of terminal further, it is alternatively possible to further requirement The 40mhz packet of website is sent on the main 40mhz channel of 11ac 80mhz system and is sent to this system in wlan 2 In the original position of 40mhz packet of website can not align, namely the leading part of two packets can not be completely overlapped.

For website sends data to ap, there is following several situation:

Situation 1: only the website in 11ac 80mhz system sends data to ap, described packet is 80mhz packet；

Situation 2: the website in only wlan 2 sends 40mhz data on the 40mhz channel of this system；

Situation 3: only the website in 11ac 80 system sends 40mhz data to ap on main 40mhz channel；

Situation 4: in existing 11ac 80mhz system, website sends 40mhz data to ap on main 40m channel simultaneously, has again The inner website of wlan 2 sends 40mhz data to ap；

Wherein, it is separate for accessing between 11ac 80mhz system and the website accessing wlan b, and for For 802.11a, 802.11b, 802.11g, 802.11n or 802.11ac system, website sends the absolute time of data to ap, Ap is uncontrollable, above-mentioned 4 kinds of situations all it may happen that.So, especially, when situation 4 occurs, in a wlan b The data that website sends to ap, typically can't be with the website in a 11ac 80mhz system on the primary channel to ap transmission Data, aligns in ofdm symbol aspect.Thus, ap can not be connect two 40m data together with the receives link of a 80mhz Take down, because because ofdm symbol does not have boundary alignment, having and interfere.And, ap can not know in advance on earth can It is any situation, preferably, therefore, the receiver of ap needs to complete following three action simultaneously: only receive 11ac 80mhz Data on system main 40mhz channel, only receives the data on auxiliary 40mhz system channel, and receives whole 80mhz channel width Upper data.

The present embodiment is similar with the first application example, alternatively, in order to simplify ap side receiver, on the basis of this embodiment On, can adopt: after the first channel determining WLAN wlan and second channel, methods described can also include: Call duration time is divided into continuously multiple time periods；In each described time period, indicate the first LAN and second game Website at least one LAN in the net of domain must not compete the right to use of the working channel of corresponding at least one LAN described. That is, in each described time period, the website at least one LAN in instruction the first LAN and the second LAN is not Compete the right to use of the working channel in the affiliated LAN of described website.Above-mentioned first application example of its concrete implementation process In corresponding simplification process, will not be described here.

The above is taking 80mhz as a example, when 11ac system bandwidth is 40mhz, during 160mhz, can be come using similar method Improve spectrum efficiency, specifically refer to above-mentioned, will not be described here.

Also refer to Figure 10, Figure 10 is that a kind of application of the communication means of WLAN provided in an embodiment of the present invention is handed over Mutually flow chart, specifically includes:

Step 110: access point ap selects continuous first channel of WLAN wlan two and second channel；Described WLAN includes the first LAN and the second LAN；

Step 111a: access point ap utilizes described first channel to send the first beacon frame, and described first beacon frame includes The system information of the first LAN；

Step 112a: described first website detects all channels, and described first beacon frame that described ap sends is detected；

Step 113a: described first website passes through the first channel and initiates access request to described ap；

Step 114a: described ap, after receiving described access request, is sent to the first website by the first channel and accesses Response；

Step 115a: described first website, is entered with described ap by the first channel after receiving the access response that ap sends Row communication；

Step 111b: described ap utilizes described second channel to send the second beacon frame, described second beacon frame includes the The system information of two LANs；

Step 112b: described second website detects all channels, and the institute that described ap is sent is detected by second channel State the second beacon frame;

Step 113b: described second website passes through second channel and initiates access request to described ap；

Step 114b: described ap passes through second channel and sends access response to the second website；

Step 115b: described second website after the access response receiving ap transmission, described second website and described ap Communicated.

Wherein, in this embodiment, described step 111a to 115a, realizes with while step 111b to 115b, optional , during realizing at the same time, if described transmission the first beacon frame and the second beacon frame have overlap in time, will be described The OFDM ofdm symbol aligned of time upper lap in first beacon frame and the second beacon frame；If described transmission When first Frame and the second Frame have overlap in time, the ofdm symbol aligned of lap on the time.

Wherein, in this embodiment, described website (the first website and the second website) detect ap transmission beacon frame (i.e. First beacon frame and the second beacon frame) process, and the access request initiated afterwards, this comes for those skilled in the art Say, be to know technology, will not be described here.

Based on the process of realizing of said method, the embodiment of the present invention also provides a kind of communicator of WLAN, its As shown in figure 11, described device comprises determining that unit 11 and the first transmitting element 12 and the second transmitting element 13 to structural representation, Wherein, described determining unit 11, for determining the first channel and the second channel of WLAN wlan, wherein, described One channel and second channel are continuous；Described WLAN includes the first LAN and the second LAN；Described first transmission Unit 12, sends the first beacon frame for all or part of bandwidth using described first channel, described first beacon frame includes The system information of the first LAN；Described second transmitting element 13, for all or part of bandwidth using described second channel Send the second beacon frame, described second beacon frame includes the system information of the second LAN.

Optionally, described first transmitting element sends the first beacon frame and the second beacon frame of the second transmitting element transmission Can be non-overlapping in time it is also possible to have overlap in the time or overlapping.

Optionally, by different channels, interfering of different beacon frame is sent on the same time in order to reduce, described Device can also include: the first alignment unit, sends for the first beacon frame sending and second in described first transmitting element When the second beacon frame that unit sends has overlap in time, by upper for the time in described first beacon frame and the second beacon frame overlap Partial OFDM ofdm symbol aligned.

Optionally, if the first channel of described determining unit determination and second channel are respectively the channel of 20mhz bandwidth, And first channel and second channel continuous；Then described first transmitting element, specifically for the whole bands using described first channel Wide transmission the first beacon frame, described first beacon frame includes the system information of the first LAN, the system of described first LAN Information includes: described first LAN is the information of the 802.11n wlan that system bandwidth is 40mhz, and instruction second channel Information for the auxiliary channel of described 802.11n wlan；

Described second transmitting element, specifically for sending the second beacon frames using the whole bandwidth of second channel, described the Two beacon frames include the system information of the second LAN, and the system information of described second LAN includes: described second LAN It is the information of 802.11a, 802.11b, 802.11g, 802.11n wlan that system bandwidth is 20mhz.

Optionally, if the first channel of described determining unit determination and second channel are respectively the channel of 40mhz bandwidth, And first channel and second channel continuous；Then described first transmitting element, specifically for the described portion using described first channel Bandwidth is divided to send the first beacon frame, described first beacon frame includes the system information of the first LAN, described first LAN System information includes: described first LAN is the information of the 802.11ac wlan that system bandwidth is 80mhz, and instruction institute State the information of the auxiliary 40mhz channel that second channel is described 802.11ac wlan；

Described second transmitting element, sends the second beacon specifically for the described fractional bandwidth using described second channel Frame, described second beacon frame includes the system information of the second LAN, and the system information of described second LAN includes: described Two LANs are the information of 802.11a, 802.11b, 802.11g, 802.11n wlan that system bandwidth is 20mhz；Or, institute State the information that the second LAN is 802.11n the or 802.11ac wlan that system bandwidth is second channel 40mhz；

If the first channel that described determining unit determines and second channel are respectively the channel of 80mhz bandwidth；

Described first transmitting element, sends the first beacon specifically for the described fractional bandwidth using described first channel Frame, described first beacon frame includes the system information of the first LAN, and the system information of described first LAN includes: described One LAN is the information of the 802.11ac wlan that system bandwidth is 160mhz, and indicates that described second channel is described The information of the auxiliary 80mhz channel of 802.11ac wlan；

Described second transmitting element, sends the second beacon specifically for the described fractional bandwidth using described second channel Frame, described second beacon frame includes the system information of the second LAN, and the system information of described second LAN includes: described Two LANs are the letters of 802.11a, 802.11b, 802.11g, 802.11n or 802.11ac wlan that system bandwidth is 20mhz Breath, or, described second LAN is the letter of the 802.11n or 802.11ac wlan that system bandwidth is second channel 40mhz Breath, or, described second LAN is the information of the 802.11ac wlan that system bandwidth is second channel 80mhz.

In the above-described embodiments, described device can also include: the 3rd transmitting element and the 4th transmitting element, wherein, institute State the 3rd transmitting element, be connected with described first transmitting element, for being incited somebody to action by all or part of bandwidth of described first channel First Frame is sent to the website accessing in the first LAN；Described 4th transmitting element, with described second transmitting element even Connect, for the second Frame is sent to by the station accessed in the second LAN by all or part of bandwidth of described second channel Point.

Optionally, by different channels, interfering of different pieces of information frame is sent on the same time in order to reduce, described Device can also include: the second alignment unit, and for sending the first Frame in described 3rd transmitting element, and Unit the 4th is sent out When sending the second Frame to have overlap in time, by upper for the time in described first Frame and the second Frame lap Ofdm symbol aligned.

Optionally, in order to simplify the requirement of receiver, described device can also include: division unit and indicating member；Its In, described division unit, for determining in determining unit after the first channel and the second channel of WLAN wlan, will lead to The letter time is divided into continuously multiple time periods；Described indicating member, for divide in described division unit each described in In time period, the website at least one LAN in instruction the first LAN and the second LAN must not compete described website institute Belong to the right to use of the working channel in LAN.

Wherein, described indicating member, specifically for each described time period that described division unit is divided, described Send frame on the working channel of at least one LAN, a time span, described time span are set in the frame head of described frame Each time period described can be covered.Wherein, frame is sent on the working channel of at least one LAN described, described frame is Cts-to-self frame.

Wherein, in the present embodiment, definition to described call duration time, specifically refers to above-mentioned, will not be described here.

In described device the function of unit and effect realize process, refer to corresponding in said method realization Journey, will not be described here.

Also refer to Figure 12, be a kind of flow chart of data receiver method provided in an embodiment of the present invention, methods described bag Include

Step 121: receive the website in the first LAN and pass through what the first channel sent after the first beacon frame is detected First access request；And the website receiving in the second LAN is sent by second channel after the second beacon frame is detected Second access request；Wherein, described first channel and second channel are continuous channel, described wireless office in WLAN Domain network includes the first LAN and the second LAN；

Step 122: pass through the first access response that the first channel sends to the website in described first LAN；And to The second access response that website in described second LAN is sent by second channel；

Step 123: receive the data that the website in the first LAN sends by the first channel, and pass through second channel Receive the data that the website in the second LAN sends.

In other words, in this embodiment, ap passes through first that the first channel sends the system information including the first LAN After beacon frame, if one of first LAN website (such as website 1) detects this first beacon frame, pass through described first Channel sends access request to described ap；If one of the second LAN website (such as website 2) detects this second beacon Frame, then send access request by described second channel to described ap；Afterwards, ap is sent to this website 1 by the first channel and connects Enter response, i.e. website 1 access network；Ap passes through second channel and sends access response, i.e. website 2 access network to this website 2；? Afterwards, ap and this website 1 and website 2 are communicated.Such as, receive the number that the website in the first LAN sends by the first channel According to, and data that the website in the second LAN sends etc. is received by second channel.

Optionally, in the above-described embodiments, if described first channel and second channel are respectively the letter of 20mhz bandwidth Road, and the first channel and second channel continuous；The data of the described website transmission being received by the first channel in the first LAN, And the data that sends respectively of website in the second LAN received by second channel particularly as follows: receiving the by the first channel The data that in one LAN, the website with a width of 20mhz sends, and a width of by carrying in second channel reception the second LAN The data that the website of 20mhz sends respectively.Its concrete implementation process refers to above-mentioned corresponding embodiment, will not be described here.

Optionally, in the above-described embodiments, if described first channel and second channel are respectively 40mhz or 80mhz band Wide channel, and the first channel and second channel continuous；The described website being received by the first channel in the first LAN is sent Data, and the data that sends respectively of website in the second LAN is received particularly as follows: believing by first by second channel Road receives the data that in the first LAN, the website with a width of 40mhz or 80mhz sends, and receives second by second channel The data that in LAN, the website with a width of 40mhz or 80mhz sends respectively.Its concrete implementation process refers to above-mentioned corresponding Embodiment, will not be described here.

Optionally, when described first LAN is the 802.11ac wlan that system bandwidth is 80mhz or 160mhz,

The data of the described website transmission being received by the first channel in the first LAN, and received by second channel Data that website in second LAN sends respectively particularly as follows: only receive on the main 40mhz channel of 11ac 80mhz system or Data on 11ac 160mhz system main 80mhz channel；Or only receive the number on auxiliary 40mhz system or auxiliary 80mhz channel According to；Or receive data in whole 80mhz or 160mhz channel width.

Accordingly, the embodiment of the present invention also provides a kind of data sink, and its structural representation is as shown in figure 13, described Device includes: the first receiving unit 131, transmitting element 132 and the second receiving unit 133, wherein, described first receiving unit 131, pass through, for receiving the website in the first LAN, the first access that the first channel sends after the first beacon frame is detected Request, wherein, described first channel and second channel are continuous channel, described WLAN bag in WLAN Include the first LAN and the second LAN；And the website receiving in the second LAN passes through the after the second beacon frame is detected The second access request that two channels send；Described transmitting element 132, for passing through first to the website in described first LAN The first access response that channel sends；And access to the website in described second LAN by second channel sends second Response；Described second receiving unit 133, for receiving the data that the website in the first LAN sends by the first channel, with And the data that the website in the second LAN sends is received by second channel.

Optionally, the channel of described first channel and second channel respectively 20mhz bandwidth, and the first channel and the second letter Road is continuous；Described transmitting element passes through the data that the first channel receives the website transmission in the first LAN, and passes through second The data that website in channel reception the second LAN sends respectively is carried particularly as follows: being received in the first LAN by the first channel The data that the website of a width of 20mhz sends, and divided by the website with a width of 20mhz in second channel reception the second LAN The data of not other transmission.

Optionally, the channel of described first channel and second channel respectively 40mhz or 80mhz bandwidth, and the first channel Continuous with second channel；Described transmitting element passes through the data that the first channel receives the website transmission in the first LAN, and The data being sent respectively by the website in second channel reception the second LAN is particularly as follows: receive first game by the first channel The data that in the net of domain, the website with a width of 40mhz or 80mhz sends, and bandwidth in the second LAN is received by second channel The data sending respectively for the website of 40mhz or 80mhz.

Optionally, when described first LAN is the 802.11ac wlan that system bandwidth is 80mhz or 160mhz, institute State the second receiving unit and pass through the data that the first channel receives the website transmission in the first LAN, and connect by second channel Receive the data that the website in the second LAN sends respectively particularly as follows: only receive on the main 40mhz channel of 11ac 80mhz system or Data on 11ac 160mhz system main 80mhz channel；Or only receive the number on auxiliary 40mhz system or auxiliary 80mhz channel According to；Or receive data in whole 80mhz or 160mhz channel width.

In described device the function of unit and effect realize that process refers to above-described embodiment implement process, Will not be described here.

It should be noted that herein, such as first and second or the like relational terms are used merely to a reality Body or operation are made a distinction with another entity or operation, and not necessarily require or imply these entities or deposit between operating In any this actual relation or order.And, term " inclusion ", "comprising" or its any other variant are intended to Comprising of nonexcludability, wants so that including a series of process of key elements, method, article or equipment and not only including those Element, but also include other key elements being not expressly set out, or also include for this process, method, article or equipment Intrinsic key element.In the absence of more restrictions, the key element that limited by sentence "including a ..." it is not excluded that Also there is other identical element including in the process of described key element, method, article or equipment.

Through the above description of the embodiments, those skilled in the art can be understood that the present invention can be by Software adds the mode of necessary general hardware platform to realize naturally it is also possible to pass through hardware, but the former is more in many cases Good embodiment.Based on such understanding, technical scheme substantially contributes to prior art in other words Partly can be embodied in the form of software product, this computer software product can be stored in storage medium, such as rom/ Ram, magnetic disc, CD etc., including some instructions with so that computer equipment (can be personal computer, server, or Person's network equipment etc.) execution each embodiment of the present invention or embodiment some partly described methods.

The above is only the preferred embodiment of the present invention it is noted that ordinary skill people for the art For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should It is considered as protection scope of the present invention.

Claims (42)

1. a kind of communication means of WLAN is it is characterised in that include:

Determine the first channel and the second channel of WLAN wlan, wherein, described first channel and second channel are continuous； Described WLAN includes the first LAN and the second LAN；

All or part of bandwidth using described first channel sends the first beacon frame, and described first beacon frame includes described first The system information of LAN；

All or part of bandwidth using described second channel sends the second beacon frame, and described second beacon frame includes described second The system information of LAN；

Described first channel and the channel of second channel respectively 20mhz bandwidth；

The system information of described first LAN at least includes:

Described first LAN is the information of the 802.11n wlan that system bandwidth is 40mhz, and instruction second channel is institute State the information of the auxiliary channel of 802.11n wlan；

The system information of described second LAN includes:

Described second LAN is 802.11a, 802.11b, 802.11g or 802.11n wlan that system bandwidth is 20mhz Information.

2. method according to claim 1 is it is characterised in that described transmission first beacon frame and the second beacon frame are in the time Upper non-overlapping.

3. method according to claim 1 is it is characterised in that described transmission first beacon frame and the second beacon frame are in the time Upper overlap；

When described transmission the first beacon frame and the second beacon frame have overlap in time, by described first beacon frame and the second letter The OFDM ofdm symbol aligned of time upper lap in mark frame.

4. method according to claim 1 is it is characterised in that also include after methods described:

First Frame is sent to by the website accessing in the first LAN by all or part of bandwidth of described first channel；

Second Frame is sent to by the website accessing in the second LAN by all or part of bandwidth of described second channel；

Wherein, when described transmission the first Frame and the second Frame have overlap in time, the ofdm of lap on the time Symbol aligned.

5. the method according to any one of Claims 1-4 is it is characterised in that determining the of WLAN wlan After one channel and second channel, methods described also includes:

Call duration time is divided into continuously multiple time periods, wherein；

In each described time period, the website at least one LAN in instruction the first LAN and the second LAN is not Compete the right to use of the working channel in the affiliated LAN of described website.

6. method according to claim 5 it is characterised in that in described instruction first LAN and the second LAN at least Website in one LAN must not compete the right to use of the working channel in the affiliated LAN of described website, specifically includes:

For each time period, the working channel of at least one LAN described sends frame, sets in the frame head of described frame Put a time span, described time span can cover each time period described.

7. method according to claim 6 is it is characterised in that send on the working channel of at least one LAN described Frame, described frame is cts-to-self frame.

8. a kind of communication means of WLAN is it is characterised in that include:

Determine the first channel and the second channel of WLAN wlan, wherein, described first channel and second channel are continuous； Described WLAN includes the first LAN and the second LAN；

All or part of bandwidth using described first channel sends the first beacon frame, and described first beacon frame includes described first The system information of LAN；

All or part of bandwidth using described second channel sends the second beacon frame, and described second beacon frame includes described second The system information of LAN；

Described first channel and the channel of second channel respectively 40mhz bandwidth；

The system information of described first LAN includes: described first LAN is system bandwidth is 80mhz The information of 802.11acwlan, and the letter of the auxiliary 40mhz channel that the described second channel of instruction is described 802.11ac wlan Breath；

The system information of described second LAN at least includes: described second LAN is system bandwidth is 20mhz The information of 802.11a, 802.11b, 802.11g, 802.11n or 802.11ac wlan, or, described second LAN is to be Command the information of the 802.11n or 802.11ac wlan of a width of second channel 40mhz.

9. method according to claim 8 is it is characterised in that described transmission first beacon frame and the second beacon frame are in the time Upper non-overlapping.

10. method according to claim 8 it is characterised in that described transmission first beacon frame and the second beacon frame when Between upper overlap；

When described transmission the first beacon frame and the second beacon frame have overlap in time, by described first beacon frame and the second letter The OFDM ofdm symbol aligned of time upper lap in mark frame.

11. methods according to claim 8 are it is characterised in that also include after methods described:

First Frame is sent to by the website accessing in the first LAN by all or part of bandwidth of described first channel；

Second Frame is sent to by the website accessing in the second LAN by all or part of bandwidth of described second channel；

Wherein, when described transmission the first Frame and the second Frame have overlap in time, the ofdm of lap on the time Symbol aligned.

12. methods described according to Claim 8 to 11 any one are it is characterised in that determining WLAN wlan After first channel and second channel, methods described also includes:

Call duration time is divided into continuously multiple time periods, wherein；

In each described time period, the website at least one LAN in instruction the first LAN and the second LAN is not Compete the right to use of the working channel in the affiliated LAN of described website.

13. methods according to claim 12 it is characterised in that in described instruction first LAN and the second LAN extremely Website in a few LAN must not compete the right to use of the working channel in the affiliated LAN of described website, specifically includes:

For each time period, the working channel of at least one LAN described sends frame, sets in the frame head of described frame Put a time span, described time span can cover each time period described.

14. methods according to claim 13 are it is characterised in that send out on the working channel of at least one LAN described Send frame, described frame is cts-to-self frame.

A kind of 15. communication means of WLAN are it is characterised in that include:

Determine the first channel and the second channel of WLAN wlan, wherein, described first channel and second channel are continuous； Described WLAN includes the first LAN and the second LAN；

All or part of bandwidth using described first channel sends the first beacon frame, and described first beacon frame includes described first The system information of LAN；

All or part of bandwidth using described second channel sends the second beacon frame, and described second beacon frame includes described second The system information of LAN；

Described first channel and the channel of second channel respectively 80mhz bandwidth；

The system information of described first LAN includes: described first LAN is the 802.11ac that system bandwidth is 160mhz The information of wlan, and the information of the auxiliary 80mhz channel that the described second channel of instruction is described 802.11ac wlan；

The system information of described second LAN at least includes: described second LAN is system bandwidth is 20mhz The information of 802.11a, 802.11b, 802.11g, 802.11n or 802.11ac wlan, or, described second LAN is to be Command the information of the 802.11n or 802.11ac wlan of a width of second channel 40mhz, or, described second LAN is system The information of the 802.11ac wlan with a width of second channel 80mhz.

16. methods according to claim 15 it is characterised in that described transmission first beacon frame and the second beacon frame when Between upper non-overlapping.

17. methods according to claim 15 it is characterised in that described transmission first beacon frame and the second beacon frame when Between upper overlap；

When described transmission the first beacon frame and the second beacon frame have overlap in time, by described first beacon frame and the second letter The OFDM ofdm symbol aligned of time upper lap in mark frame.

18. methods according to claim 15 are it is characterised in that also include after methods described:

First Frame is sent to by the website accessing in the first LAN by all or part of bandwidth of described first channel；

Second Frame is sent to by the website accessing in the second LAN by all or part of bandwidth of described second channel；

Wherein, when described transmission the first Frame and the second Frame have overlap in time, the ofdm of lap on the time Symbol aligned.

19. methods according to any one of claim 15 to 18 are it is characterised in that determining WLAN wlan After first channel and second channel, methods described also includes:

Call duration time is divided into continuously multiple time periods, wherein；

In each described time period, the website at least one LAN in instruction the first LAN and the second LAN is not Compete the right to use of the working channel in the affiliated LAN of described website.

20. methods according to claim 19 it is characterised in that in described instruction first LAN and the second LAN extremely Website in a few LAN must not compete the right to use of the working channel in the affiliated LAN of described website, specifically includes:

For each time period, the working channel of at least one LAN described sends frame, sets in the frame head of described frame Put a time span, described time span can cover each time period described.

21. methods according to claim 20 are it is characterised in that send out on the working channel of at least one LAN described Send frame, described frame is cts-to-self frame.

A kind of 22. communicators of WLAN are it is characterised in that include:

Determining unit, for determining the first channel and the second channel of WLAN wlan；Wherein, described first channel and Second channel is continuous；Described WLAN includes the first LAN and the second LAN；

First transmitting element, for sending the first beacon frame using all or part of bandwidth of described first channel, described first Beacon frame includes the system information of the first LAN；

Second transmitting element, for sending the second beacon frame using all or part of bandwidth of described second channel, described second Beacon frame includes the system information of the second LAN；

The first channel and the channel of second channel respectively 20mhz bandwidth that described determining unit determines；

Described first transmitting element, specifically for sending the first beacon frames using the whole bandwidth of described first channel, described the One beacon frame includes the system information of the first LAN, and the system information of described first LAN includes: described first LAN It is the information of the 802.11n wlan that system bandwidth is 40mhz, and the auxiliary letter that instruction second channel is described 802.11nwlan The information in road；

Described second transmitting element, specifically for sending the second beacon frame, described second letter using whole bandwidth of second channel Mark frame includes the system information of the second LAN, and the system information of described second LAN includes: described second LAN is to be Command the information of 802.11a, 802.11b, 802.11g, 802.11n wlan of a width of 20mhz.

23. devices according to claim 22 it is characterised in that described first transmitting element send the first beacon frame and The second beacon frame that second transmitting element sends is non-overlapping in time, or overlapping.

24. devices according to claim 22 are it is characterised in that also include:

First alignment unit, the sending for the first beacon frame of sending in described first transmitting element and the second transmitting element When two beacon frames have overlap in time, by the orthogonal frequency of upper for the time in described first beacon frame and the second beacon frame lap Divide multiplexing ofdm symbol aligned.

25. devices according to claim 22 are it is characterised in that also include after described device:

3rd transmitting element, for being sent to access by all or part of bandwidth of described first channel by the first Frame Website in one LAN；

4th transmitting element, for being sent to access by all or part of bandwidth of described second channel by the second Frame Website in two LANs.

26. devices according to claim 25 are it is characterised in that also include:

Second alignment unit, for sending the first Frame in described 3rd transmitting element, and Unit the 4th sends the second data When frame has overlap in time, by the ofdm symbol pair of upper for the time in described first Frame and the second Frame lap Together.

27. devices according to any one of claim 22 to 26 are it is characterised in that also include:

Division unit, for determining in determining unit after the first channel and the second channel of WLAN wlan, will communicate Time is divided into continuously multiple time periods；

Indicating member, for, in each described time period of dividing in described division unit, indicating the first LAN and second Website at least one LAN in LAN must not compete the use of the working channel in the LAN belonging to described website Power.

28. devices according to claim 27 it is characterised in that described indicating member, specifically for described divide single Each described time period that unit divides, frame, the frame head of described frame are sent on the working channel of at least one LAN described In a time span is set, described time span can cover each time period described.

A kind of 29. communicators of WLAN are it is characterised in that include:

Determining unit, for determining the first channel and the second channel of WLAN wlan；Wherein, described first channel and Second channel is continuous；Described WLAN includes the first LAN and the second LAN；

First transmitting element, for sending the first beacon frame using all or part of bandwidth of described first channel, described first Beacon frame includes the system information of the first LAN；

Second transmitting element, for sending the second beacon frame using all or part of bandwidth of described second channel, described second Beacon frame includes the system information of the second LAN；

The first channel and the channel of second channel respectively 40mhz bandwidth that described determining unit determines；

Described first transmitting element, sends the first beacon frame, institute specifically for the described fractional bandwidth using described first channel State the system information that the first beacon frame includes the first LAN, the system information of described first LAN includes: described first game Domain net is the information of the 802.11ac wlan that system bandwidth is 80mhz, and indicates that described second channel is described 802.11ac The information of the auxiliary 40mhz channel of wlan；

Described second transmitting element, sends the second beacon frame, institute specifically for the described fractional bandwidth using described second channel State the system information that the second beacon frame includes the second LAN, the system information of described second LAN includes: described second game Domain net is the information of 802.11a, 802.11b, 802.11g, 802.11n or 802.11ac wlan that system bandwidth is 20mhz, Or, described second LAN is the information of the 802.11n or 802.11ac wlan that system bandwidth is second channel 40mhz.

30. devices according to claim 29 it is characterised in that described first transmitting element send the first beacon frame and The second beacon frame that second transmitting element sends is non-overlapping in time, or overlapping.

31. devices according to claim 29 are it is characterised in that also include:

First alignment unit, the sending for the first beacon frame of sending in described first transmitting element and the second transmitting element When two beacon frames have overlap in time, by the orthogonal frequency of upper for the time in described first beacon frame and the second beacon frame lap Divide multiplexing ofdm symbol aligned.

32. devices according to claim 29 are it is characterised in that also include after described device:

3rd transmitting element, for being sent to access by all or part of bandwidth of described first channel by the first Frame Website in one LAN；

4th transmitting element, for being sent to access by all or part of bandwidth of described second channel by the second Frame Website in two LANs.

33. devices according to claim 32 are it is characterised in that also include:

Second alignment unit, for sending the first Frame in described 3rd transmitting element, and Unit the 4th sends the second data When frame has overlap in time, by the ofdm symbol pair of upper for the time in described first Frame and the second Frame lap Together.

34. devices according to any one of claim 29 to 33 are it is characterised in that also include:

Division unit, for determining in determining unit after the first channel and the second channel of WLAN wlan, will communicate Time is divided into continuously multiple time periods；

Indicating member, for, in each described time period of dividing in described division unit, indicating the first LAN and second Website at least one LAN in LAN must not compete the use of the working channel in the LAN belonging to described website Power.

35. devices according to claim 34 it is characterised in that described indicating member, specifically for described divide single Each described time period that unit divides, frame, the frame head of described frame are sent on the working channel of at least one LAN described In a time span is set, described time span can cover each time period described.

A kind of 36. communicators of WLAN are it is characterised in that include:

Determining unit, for determining the first channel and the second channel of WLAN wlan；Wherein, described first channel and Second channel is continuous；Described WLAN includes the first LAN and the second LAN；

First transmitting element, for sending the first beacon frame using all or part of bandwidth of described first channel, described first Beacon frame includes the system information of the first LAN；

Second transmitting element, for sending the second beacon frame using all or part of bandwidth of described second channel, described second Beacon frame includes the system information of the second LAN；

The first channel and the channel of second channel respectively 80mhz bandwidth that described determining unit determines；

Described first transmitting element, sends the first beacon frame, institute specifically for the described fractional bandwidth using described first channel State the system information that the first beacon frame includes the first LAN, the system information of described first LAN includes: described first game Domain net is the information of the 802.11ac wlan that system bandwidth is 160mhz, and indicates that described second channel is described The information of the auxiliary 80mhz channel of 802.11ac wlan；

Described second transmitting element, sends the second beacon frame, institute specifically for the described fractional bandwidth using described second channel State the system information that the second beacon frame includes the second LAN, the system information of described second LAN includes: described second game Domain net is the information of 802.11a, 802.11b, 802.11g, 802.11n or 802.11ac wlan that system bandwidth is 20mhz, Or, described second LAN is the information of the 802.11n or 802.11ac wlan that system bandwidth is second channel 40mhz, or Person, described second LAN is the information of the 802.11ac wlan that system bandwidth is second channel 80mhz.

37. devices according to claim 36 it is characterised in that described first transmitting element send the first beacon frame and The second beacon frame that second transmitting element sends is non-overlapping in time, or overlapping.

38. devices according to claim 36 are it is characterised in that also include:

First alignment unit, the sending for the first beacon frame of sending in described first transmitting element and the second transmitting element When two beacon frames have overlap in time, by the orthogonal frequency of upper for the time in described first beacon frame and the second beacon frame lap Divide multiplexing ofdm symbol aligned.

39. devices according to claim 36 are it is characterised in that also include after described device:

3rd transmitting element, for being sent to access by all or part of bandwidth of described first channel by the first Frame Website in one LAN；

4th transmitting element, for being sent to access by all or part of bandwidth of described second channel by the second Frame Website in two LANs.

40. devices according to claim 39 are it is characterised in that also include:

Second alignment unit, for sending the first Frame in described 3rd transmitting element, and Unit the 4th sends the second data When frame has overlap in time, by the ofdm symbol pair of upper for the time in described first Frame and the second Frame lap Together.

41. devices according to any one of claim 36 to 39 are it is characterised in that also include:

Division unit, for determining in determining unit after the first channel and the second channel of WLAN wlan, will communicate Time is divided into continuously multiple time periods；

Indicating member, for, in each described time period of dividing in described division unit, indicating the first LAN and second Website at least one LAN in LAN must not compete the use of the working channel in the LAN belonging to described website Power.

42. devices according to claim 41 it is characterised in that described indicating member, specifically for described divide single Each described time period that unit divides, frame, the frame head of described frame are sent on the working channel of at least one LAN described In a time span is set, described time span can cover each time period described.