CN107040356A

CN107040356A - The method and device of cooperation transmission in WLAN

Info

Publication number: CN107040356A
Application number: CN201610081423.XA
Authority: CN
Inventors: 韩志强; 侯蓉晖; 王祖袖; 吕开颖; 孙波; 李楠
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2016-02-04
Filing date: 2016-02-04
Publication date: 2017-08-11
Anticipated expiration: 2036-02-04
Also published as: WO2017133416A1; CN107040356B

Abstract

The invention provides a kind of method and device of cooperation transmission in WLAN, wherein, this method includes：First access point receives the first data from website, wherein, the information for indicating unlatching multipoint cooperative function is carried in the first data, website and the first access point belong to same Basic Service Set；First access point receives the second data of the second access point forwarding, wherein, the second access point and the first access point belong to same multipoint cooperative group, and the second data are from the Basic Service Set belonging to the first access point；First access point is judged the first data and the second data, and sends the confirmation message that the first data are had correctly received for instruction to website according to judged result.By the present invention, the problem of being influenced each other in correlation technique between OBSS due to the data transfer between website is solved, the effect for the correctness for improving data transfer has been reached.

Description

The method and device of cooperation transmission in WLAN

Technical field

The present invention relates to the communications field, in particular to a kind of method and device of cooperation transmission in WLAN.

Background technology

At present, applied with the burst of wlan network, the continuous densification of deployment of wlan network, network load Also constantly aggravating, and increasing with network, the overlapping situation of the network coverage is also more serious, the effect of wlan network The trend being decreased obviously occurs in rate, and the simple speed that improves can not solve the problem.Therefore, ieee standard is organized into The group of task for having found correlation is directed to solving wlan network efficiency, wherein, solve under dense deployment scene The problem of collision and interference aggravation, attract wide attention and study.

Fig. 1 is radio frames basic structure schematic diagram in correlation technique, as shown in figure 1, in an ofdm system, wirelessly The basic structure of frame is as shown in figure 1, include two parts：Physical layer preamble and data division.Physical layer preamble includes compatibility The leading and Short Training domain of legacy equipment, long training domain, signaling domain etc..

What IEEE802.11 was defined is medium access control (medium access control, referred to as MAC) and thing Manage the agreement of layer (Physical Layer, referred to as PHY).Define two kinds of basic manipulation modes：Distributed coordination work( Can (Distributed Coordination Function, referred to as DCF) and point coordination function (Point Coordination Function, referred to as PCF).

In WLAN ofdm system, the interval between frame and frame be referred to as interframe space (Interframe Space, Referred to as IFS).The need for for difference, a variety of interframe spaces are defined：SIFS (short IFS), PIFS (PCF IFS), DIFS (DCF IFS) etc..

Because in wlan network, website access channel is generally adopted by the mode of free competition, in order to ensure transmission Reliability, the Frame switch typically used is that recipient is receiving the specific interframe space after targeted sites are oneself data (SIFS) after, confirmation message (Acknowledgement) can be sent.With version evolution, IEEE802.11 agreements are drawn Aggregate frame operation is entered, recipient is received after aggregate frame, after specific interframe space (SIFS), confirmation message can be sent out (Block Acknowledgement).The address for sending the aggregate frame is included in Block Acknowledgement, is risen Beginning sequence number (Starting Sequence Number), service identification (Traffic ID, referred to as TID) indicates to receive The bitmap (Block Ack Bitmap) of state.Each of which bit is used for correspondence subframe in the aggregate frame that instruction is received Reception state.If the bit is set to 1, then it represents that corresponding subframe is properly received, if set to 0, then it represents that correspondence Frame is not properly received.It should be noted that Acknowledgement or Block Acknowledgement may be used To be referred to as confirmation message.

The reception processing deterministic process of MAC layer：MPDU (the medium access control come up are transmitted to PHY layer (MAC) protocol data unit, media access control protocol data cell) verified, judge whether correctly, if Correctly, mac frame head is done after necessary processing, judgement is after oneself being intended recipient address, to be obtained from MPDU MSDU (medium access control (MAC) service data unit, media access control protocol service unit), And to upper layer transfers.

The basic framework of WLAN refers to a Basic Service Set (Basic Service Set, abbreviation BSS), includes one Individual access point (Access Point, abbreviation AP) and the multiple websites (Station, abbreviation STA) associated with AP. If two BSS working regions have overlapping, working band it is identical or it is overlapping be referred to as overlapping basic service set (Overlapping Basic Service Set, referred to as OBSS), Fig. 2 is WLAN Basic Service Set BSS schematic diagrames in correlation technique, As shown in Fig. 2 in order to distinguish different BSS, can be distinguished by BSS attaching informations, in existing phase In the scheme of pass, carrying out difference BSS attaching informations includes BSSID (basic service set identifier, Basic Service Set Mark), it is generally identical with AP MAC Address, carried in the frame head of MAC layer；Also it is exactly BSS color, Typically indicated in the frame head of physical layer.

Fig. 3 is that collision causes the schematic diagram of hydraulic performance decline between OBSS in correlation technique, in applied field as shown in Figure 3 Jing Zhong, STA1 and AP1 constitute a BSS, STA2 and AP2 and constitute BSS, STA3 and AP3 a composition one Individual BSS.When the STA1 competitive channels in OBSS environment send data to AP1, this when is due to STA3 Concealed terminal, i.e. STA3 will be considered that channel idle each other with STA1, so that competitive channel sends data to AP3, this Reception of the data meeting interfering AP 1 that STA3 is sent when individual to STA1, causes network throughput to decline.

In LTE, there is multipoint cooperative (Coordinated Multiple Points, referred to as Comp) technology, In descending multiple base stations composition multipoint cooperative groups (CoMP cooperating set) or be multipoint cooperative set, Duo Gedian (points) data from UE are received.Because the interval between data in LTE and confirmation is larger, enough multiple spot associations Work group carries out forward process.But, in wlan system, the very short (OFDM in interval between data and confirmation message System is generally 16us), using the comp technical finesses, there isn't enough time.

For the above mentioned problem in correlation technique, not yet there is effective solution at present.

The content of the invention

The invention provides a kind of method and device of cooperation transmission in WLAN, at least to solve in correlation technique The problem of being influenced each other between OBSS due to the data transfer between website.

According to an aspect of the invention, there is provided in a kind of WLAN cooperation transmission method, including：First connects Access point receives the first data from website, wherein, carried in first data for indicating to open multipoint cooperative work( The information of energy, the website belongs to same Basic Service Set with first access point；First access point receives second Second data of access point forwarding, wherein, second access point belongs to same multipoint cooperative group with first access point, Second data are from the Basic Service Set belonging to first access point；First access point is to first data Judged with second data, and sent according to judged result to the website and have correctly received described for instruction The confirmation message of one data.

Further, first access point is judged first data and second data, and according to judgement As a result send and included for the confirmation message package for indicating to have correctly received first data to the website：First access Point individually judges first data and second data；In judged result to have correctly received first data or institute When stating the second data, first access point sends confirmation message to the website；It is to be not properly received in judged result When first data and second data, first access point carries out first data and second data Merging treatment, judges whether the data after merging are correct；In judged result for when being properly received, described first accesses Point sends confirmation message to the website.

Further, the mode of operation of multipoint cooperative is also carried in first data, wherein, the mode of operation bag Include：Information merges mode；Described information merges mode and is used to indicate its in addition to first access point of multipoint cooperative group His WAP receives the processing mode of the first data.

Further, described information, which merges, includes one below：Forwarding media access control protocol data cell, forwarding connect The reception shape for the media access control protocol service unit that the media access control protocol service unit that receives, forwarding are received State parameter forwards the media access control protocol clothes that the media access control protocol service unit received, forwarding are received again The reception state parameter of business unit forwards the media access control protocol data cell received again.

Further, when described information merges mode for forwarding media access control protocol data cell, described first connects The second data that access point receives the second access point forwarding include：First access point receives the second access point hair That send is carried on the media access control protocol data cell of the second data；Merge mode in described information to receive for forwarding Media access control protocol data cell when, first access point receives the second data of the second access point forwarding Including：First access point receives the correct medium visit of the verification for being carried on the second data that second access point is sent Ask control service unit；Merge connecing for the media access control protocol service unit that mode receives for forwarding in described information When receipts state forwards the media access control protocol service unit received again, first access point receives described second and connect The second data that access point is sent include：First access point receives the second access point forwarding reception state parameter；Institute State the correct media access control service of verification for being carried on the second data that the first access point receives the forwarding of the second access point Unit；The reception state for merging the media access control protocol service unit that mode receives for forwarding in described information turns again When sending out the media access control protocol data cell received, first access point receives what second access point was sent Second data include：First access point receives the second access point forwarding reception state parameter；First access Point receives the correct medium access control data unit of verification for being carried on the second data of the second access point forwarding.

Further, described reception state parameter includes：Send the Media Access Control address of second data, rise Beginning sequence number, service identification, reception state bitmap.

Further, the mode of operation also includes：Interframe space, wherein, the interframe space is the described first access Confirmation message and send the time interval between first data that point is sent.

Further, the response message of multipoint cooperative is also carried in first data, wherein, the response message is extremely Include less：Access point identity；Described access point is designated the access confirmed to the radio frames that the website is sent Point identification.

Further, methods described also includes：It is described when described access point mark includes first access point First access point sends confirmation message in the band resource that first data are sent.

Further, the response message also includes：Confirmation message duration, band resource or empty time stream resource, wherein, The duration of the confirmation of a length of radio frames sent to the website the during confirmation message；The band resource or Empty time stream resource is band resource or the empty time stream money for needing to take when the radio frames that the website is sent are confirmed Source.

Further, when the response site identity includes the mark of first access point and second access point, First access point sends the confirmation message of response in the corresponding band resource of the mark or empty time stream, wherein, it is described Confirmation message duration meets the requirement of the confirmation message duration carried in first data；Second access Point sends the confirmation of response in the corresponding band resource of the mark or empty time stream, when the confirmation continues The long requirement for meeting the confirmation message duration carried in first data.

Further, the access point in the multipoint cooperative group preserves the basic service of other access points in multipoint cooperative group Collect home identity.

Further, Basic Service Set home identity is also carried in first data.

Further, before the first access point receives first data, methods described also includes：First access Point notifies the multipoint cooperative mode of operation that first access point is supported to the website.

According to a further aspect of the invention there is provided a kind of method of cooperation transmission in WLAN, including：Second Access point receives the first data from website, wherein, carried in first data for indicating to open multipoint cooperative work( Can information, first data with second access point from belonging to belonging to the first access point of same cooperative groups Basic Service Set；Second access point forwards first data to first access point.

Further, described information, which merges, includes one below：Media access control protocol data cell is forwarded, forwarding connects The media access control protocol service unit received, forwards the reception shape of the media access control protocol service unit received State parameter forwards the media access control protocol service unit received again, forwards the media access control protocol clothes received The reception state parameter of business unit forwards the media access control protocol data cell received again.

Further, when described information merges mode for forwarding media access control protocol data cell, described second connects Access point sends the second data to first access point to be included：Second access point sends to first access point and carried In the media access control protocol data cell of the second data；Merge mode in described information to visit for the medium that forwarding is received When asking control protocol data cell, second access point sends the second data to first access point to be included：Described Two access points send the correct media access control service unit of verification for being carried on the second data to first access point； The reception state for merging the media access control protocol service unit that mode receives for forwarding in described information is forwarded again to be connect During the media access control protocol service unit received, second access point sends the second data to first access point Including：Second access point sends reception state parameter to first access point；Second access point connects to described first Access point sends the correct media access control service unit of verification for being carried on the second data；Merging mode in described information is The reception state of the media access control protocol service unit received is forwarded to forward the medium access control received to assist again When discussing data cell, second access point sends the second data to first access point to be included：Second access point Reception state parameter is sent to first access point；Second access point sends to first access point and is carried on the second number According to the correct medium access control data unit of verification.

Further, described reception state parameter includes sending the Media Access Control address of second data, starting Sequence number, service identification, reception state bitmap.

Further, the mode of operation also includes：Interframe space；Second access point need interframe space to correspondence when First access point described in the forward direction at quarter sends second data.

Further, the response message of multipoint cooperative is also carried in first data, wherein, the response message bag Include：Access point identity；Described access point is designated the access point confirmed to first data that the website is sent Mark.

Further, methods described also includes：When described access point mark includes the mark of second access point, Second access point sends confirmation message in the band resource that first data are sent.

Further, the response message also includes validating that message duration, band resource or empty time stream resource, wherein, The duration of the confirmation of a length of first data sent to the website the during confirmation message；The band resource Or empty time stream resource is that first data that the website is sent need the band resource or space-time of occupancy when being confirmed Flow resource.

Further, when the response message includes the mark of second access point, second access point is in institute The confirmation for identifying corresponding band resource or empty time stream transmission response is stated, the confirmation duration meets described The requirement of the confirmation message duration carried in first data.

According to a further aspect of the invention there is provided a kind of method of cooperation transmission in WLAN, including：Website The first data are sent to the first access point, wherein, carried in first data for indicating to open multipoint cooperative function Information, the website and first access point belong to same Basic Service Set.

Further, the mode of operation of multipoint cooperative is also carried in first data；Wherein, the mode of operation bag Include：Information merges mode；Described information merges mode and is used to indicate its in addition to first access point of multipoint cooperative group His WAP receives the processing mode of the first data.

Further, the response message also includes：Confirmation message duration, band resource or empty time stream resource, wherein, The duration of the confirmation of a length of first data sent to the website the during confirmation message；The band resource Or empty time stream resource is that first data that the website is sent need the band resource or space-time of occupancy when being confirmed Flow resource.

According to a further aspect of the invention there is provided a kind of device of cooperation transmission in WLAN, applied to first Access point side, including：First receiving module, for receiving the first data from website, wherein, first data In carry information for indicating to open multipoint cooperative function, the website and first access point belong to same basic Services set；Second receiving module, the second data for receiving the forwarding of the second access point, wherein, second access point Belong to same multipoint cooperative group with first access point, second data are from basic belonging to first access point Services set；Processing module, for judging first data and second data, and according to judged result to The website sends the confirmation message that first data are had correctly received for instruction.

According to a further aspect of the invention there is provided a kind of device of cooperation transmission in WLAN, applied to second Access point side, including：3rd receiving module, for receiving the first data from website, wherein, first data The middle information carried for indicating unlatching multipoint cooperative function, first data come to be belonged to second access point Basic Service Set belonging to first access point of same cooperative groups；First sending module, for turning to first access point Send out the first data described.

According to another aspect of the present invention there is provided a kind of device of cooperation transmission in WLAN, applied to website side, Including：Second sending module, for sending the first data to the first access point, wherein, carried in first data Information for indicating unlatching multipoint cooperative function, the website belongs to same Basic Service Set with first access point.

In the present invention, the first access point receives the first data from website, wherein, carry use in first data In the information for indicating unlatching multipoint cooperative function, in addition, the website belongs to same Basic Service Set with first access point； And then first access point receives the second data of the second access point forwarding, wherein, the second access point and the first access point belong to In same multipoint cooperative group, website of second data from the Basic Service Set belonging to the first access point, afterwards this pair first Data and the second data are judged, and are sent according to judged result to website for indicating to have correctly received the first data Confirmation message, it is seen then that even if website is in OBSS intervals, still data can be accurately sent to same with the website Belong to the access point of a Basic Service Set, will not be influenceed by other access points, so as to solve in correlation technique The problem of being influenced each other between OBSS due to the data transfer between website, has reached the effect for the correctness for improving data transfer Really.

Brief description of the drawings

Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, the present invention Schematic description and description be used for explain the present invention, do not constitute inappropriate limitation of the present invention.In the accompanying drawings：

Fig. 1 is radio frames basic structure schematic diagram in correlation technique；

Fig. 2 is WLAN Basic Service Set BSS schematic diagrames in correlation technique；

Fig. 3 is that collision causes the schematic diagram of hydraulic performance decline between OBSS in correlation technique；

Fig. 4 is a kind of flow chart of the method for WLAN cooperation transmission according to embodiments of the present invention；

Fig. 5 is the method flow diagram two of cooperation transmission in WLAN according to embodiments of the present invention；

Fig. 6 is the method flow diagram three of cooperation transmission in WLAN according to embodiments of the present invention；

Fig. 7 is the apparatus structure block diagram one of cooperation transmission in WLAN according to embodiments of the present invention；

Fig. 8 is the apparatus structure block diagram two of cooperation transmission in WLAN according to embodiments of the present invention；

Fig. 9 is the apparatus structure block diagram three of cooperation transmission in WLAN according to embodiments of the present invention；

Figure 10 is the multipoint cooperative schematic diagram of many BSS according to alternative embodiment of the present invention；

Figure 11 be according to the merging mode of alternative embodiment of the present invention for forwarding media access control protocol data cell Schematic diagram；

Figure 12 is the media access control protocol service received according to the merging mode of alternative embodiment of the present invention for forwarding The schematic diagram of unit；

Figure 13 is the media access control protocol service received according to the merging mode of alternative embodiment of the present invention for forwarding The reception state parameter of unit forwards the schematic diagram of the media access control protocol service unit received again；

Figure 14 is the media access control protocol service received according to the merging mode of alternative embodiment of the present invention for forwarding The reception state parameter of unit forwards the schematic diagram of the media access control protocol data cell received again；

Figure 15 is to assist AP to carry out multipoint cooperative according to the website of alternative embodiment of the present invention to set up vertical schematic diagram；

Figure 16 is the schematic diagram one that response message is indicated according to the website of alternative embodiment of the present invention；

Figure 17 is the schematic diagram two that response message is indicated according to the website of alternative embodiment of the present invention.

Embodiment

Describe the present invention in detail below with reference to accompanying drawing and in conjunction with the embodiments.It should be noted that in the feelings not conflicted Under condition, the feature in embodiment and embodiment in the application can be mutually combined.

It should be noted that term " first ", " second " in description and claims of this specification and above-mentioned accompanying drawing Etc. being for distinguishing similar object, without for describing specific order or precedence.

A kind of method of WLAN cooperation transmission is provided in the present embodiment, and Fig. 4 is according to embodiments of the present invention A kind of flow chart of the method for WLAN cooperation transmission, as shown in figure 4, the flow comprises the following steps：

Step S402：First access point receives the first data from website, wherein, being carried in the first data is used for The information of unlatching multipoint cooperative function is indicated, website and the first access point belong to same Basic Service Set；

Step S404：First access point receives the second data of the second access point forwarding, wherein, the second access point and the One access point belongs to same multipoint cooperative group, and the second data are from the Basic Service Set belonging to the first access point；

Step S406：First access point judged the first data and the second data, and according to judged result to website Send the confirmation message that the first data are had correctly received for instruction.

The present embodiment above-mentioned steps S402 into step S406, the first access point receive the first data from website, Wherein, carried in first data for indicate open multipoint cooperative function information, in addition, the website with this first Access point belongs to same Basic Service Set；And then first access point receives the second data of the second access point forwarding, wherein, Second access point and the first access point belong to same multipoint cooperative group, and the second data are from the basic clothes belonging to the first access point It is engaged in the website of collection, the data of this pair first and the second data judge afterwards, and are sent and be used for website according to judged result Instruction has correctly received the confirmation message of the first data, it is seen then that, still can be by number even if website is in OBSS intervals The access point that a Basic Service Set is belonged to the website according to being accurately sent to, will not be influenceed by other access points, So as to solve the problem of being influenced each other in correlation technique between OBSS due to the data transfer between website, raising has been reached The effect of the correctness of data transfer.

In the optional embodiment of the present embodiment, counted for being related in the step S406 in the present embodiment to first Judged according to the second data, and according to judged result to website send for instruction have correctly received the first data and/ Or second data confirmation message mode, can realize in the following way including：

Step S406-1：First access point individually judges the first data and the second data；

Step S406-2：In judged result for when having correctly received the first data or the second data, the first access point is to website Send confirmation message；In judged result for when being not properly received the first data and the second data, the first access point is by first Data and the second data merge processing, judge whether the data after merging are correct；It is correctly to connect in judged result Time receiving, the first access point sends confirmation message to website.

It should be noted that in an optional embodiment of the present embodiment, the first data being related in the present embodiment In also carry the mode of operation of multipoint cooperative, wherein, mode of operation includes：Information merges mode；Information merges mode For indicating that other WAPs of multipoint cooperative group in addition to the first access point receive the processing mode of the first data.

Wherein, information, which merges, includes one below：Jie that forwarding media access control protocol data cell, forwarding are received The reception state parameter for the media access control protocol service unit that matter access-control protocol service unit, forwarding are received is again The media access control protocol service unit for forwarding the media access control protocol service unit received, forwarding to receive Reception state parameter forwards the media access control protocol data cell received again.

Merge mode first access point different to that should have for the above-mentioned different information being related to and receive the second access point turn Second data mode of hair；

Mode one：When information merges mode for forwarding media access control protocol data cell, the first access point receives the Second data of two access points forwarding include：First access point receives Jie for being carried on the second data that the second access point is sent Matter access-control protocol data cell；

Mode two：When information merges the media access control protocol data cell that mode receives for forwarding, the first access The second data that point receives the forwarding of the second access point include：What the first access point the second access point of reception was sent is carried on second The correct media access control service unit of verification of data；

Mode three：Merge the reception state for the media access control protocol service unit that mode receives for forwarding again in information When forwarding the media access control protocol service unit received, the first access point receives the second number that the second access point is sent According to including：First access point receives the second access point forwarding reception state parameter；First access point receives the second access point and turned The correct media access control service unit of verification for being carried on the second data of hair；

Mode four：Merge the reception state for the media access control protocol service unit that mode receives for forwarding again in information When forwarding the media access control protocol data cell received, the first access point receives the second number that the second access point is sent According to including：First access point receives the second access point forwarding reception state parameter；First access point receives the second access point and turned The correct medium access control data unit of verification for being carried on the second data of hair.

It should be noted that the above-mentioned reception state parameter being related to includes：With sending the medium access control of the second data Location, starting sequence number, service identification, reception state bitmap.

And in another optional embodiment of the present embodiment, mode of operation also includes：Interframe space, wherein, interframe Time interval between the first data of confirmation message and transmission sent at intervals of the first access point.

In another optional embodiment of the present embodiment, the response message of multipoint cooperative is also carried in the first data, Wherein, response message at least includes：Access point identity；Access point identity is that the radio frames that website is sent are confirmed Access point identity.Based on this, when access point identity includes the first access point, the first access point is sent in the first data Band resource send confirmation message.

In addition, the response message being related in the present embodiment also includes：Confirmation message duration, band resource or empty time stream Resource, wherein, the duration of the confirmation of a length of radio frames sent to website during confirmation message；Band resource or space-time Stream resource is band resource or the empty time stream resource for needing to take when the radio frames that website is sent are confirmed..

In the concrete application scene of the present embodiment, include the first access point and the second access point in response site identity During mark, the first access point is identifying the confirmation message of corresponding band resource or empty time stream transmission response, wherein, confirm Message duration meets the requirement of the confirmation message duration carried in the first data；And second access point mark correspondence Band resource or empty time stream send response confirmation, confirmation duration meet the first data in carry really Recognize the requirement of message duration..

For the multipoint cooperative group being related in the present embodiment, the access point in the multipoint cooperative group is preserved in multipoint cooperative group Other access points Basic Service Set home identity.That is, each access point is except itself in multipoint cooperative group Basic Service Set home identity outside, will also maintain the Basic Service Set home identity of other access points in the multipoint cooperative. Alternatively, Basic Service Set home identity can also be carried in the first data being related in the present embodiment.

And be related in the step S402 of the present embodiment the first access point receive the first data before, the present embodiment Method can also include：First access point notifies the multipoint cooperative mode of operation that the first access point is supported to website.

Fig. 5 is the method flow diagram two of cooperation transmission in WLAN according to embodiments of the present invention, as shown in figure 5, The step of this method, includes：

Step S502：Second access point receives the first data from website, wherein, carried in the first data for referring to Show the information for opening multipoint cooperative function, first data are from the first access for belonging to same cooperative groups with the second access point Basic Service Set belonging to point；

Step S504：Second access point forwards the first data to the first access point.

It should be noted that the mode of operation of multipoint cooperative is also carried in the first data in the present embodiment, wherein, behaviour Include as mode：Information merges mode；Information merges mode and is used to indicate its in addition to the first access point of multipoint cooperative group His WAP receives the processing mode of the first data.

Wherein, information, which merges, includes one below：Media access control protocol data cell is forwarded, Jie received is forwarded Matter access-control protocol service unit, forwards the reception state parameter of the media access control protocol service unit received again The media access control protocol service unit received is forwarded, the media access control protocol service unit that forwarding is received Reception state parameter forwards the media access control protocol data cell received again.

Wherein, the mode of operation being related in the present embodiment also includes：Interframe space, wherein, interframe space connects for first Access point send confirmation message and send the first data between the access point of time interval second need interframe space to it is corresponding when The access point of forward direction first at quarter sends the second data.

In addition, the response message of multipoint cooperative is also carried in the first data in the present embodiment, wherein, response message bag Include：Access point identity；Access point identity is the access point identity confirmed to the first data that website is sent.

Based on above-mentioned response message, the method for the present embodiment can also include：Include the second access point in access point identity Mark when, the band resource that the second access point is sent in the first data sends confirmation message.

In the optional embodiment of the present embodiment, the response message also includes validating that message duration, band resource or sky When flow resource, wherein, during confirmation message it is a length of to website send the first data confirmation duration；Band resource Or empty time stream resource is that the first data that website is sent need the band resource or empty time stream resource of occupancy when being confirmed.

Based on this, when response message includes the mark of the second access point, the second access point is identifying corresponding frequency band money Source or empty time stream send the confirmation of response, when confirmation duration meets the confirmation message carried in the first data Long requirement.

Fig. 6 is the method flow diagram three of cooperation transmission in WLAN according to embodiments of the present invention, as shown in fig. 6, The step of this method, includes：

Step S602：Website sends the first data to the first access point, wherein, carried in the first data for indicating The information of multipoint cooperative function is opened, website and the first access point belong to same Basic Service Set.

In the optional embodiment of the present embodiment, the mode of operation of multipoint cooperative is also carried in first data；Wherein, Mode of operation includes：Information merges mode；Information merges mode and is used to indicate multipoint cooperative group in addition to the first access point Other WAPs receive the processing mode of the first data.

In addition, the response message of multipoint cooperative is also carried in the first data, wherein, response message includes：Access point mark Know；Access point identity is the access point identity confirmed to the first data that website is sent.

In the optional embodiment of the present embodiment, response message also includes：Confirmation message duration, band resource or sky When flow resource, wherein, during confirmation message it is a length of to website send the first data confirmation duration；Band resource Or empty time stream resource is that the first data that website is sent need the band resource or empty time stream resource of occupancy when being confirmed.

Through the above description of the embodiments, those skilled in the art can be understood that according to above-described embodiment Method the mode of required general hardware platform can be added to realize by software, naturally it is also possible to by hardware, but a lot In the case of the former be more preferably embodiment.Understood based on such, technical scheme is substantially in other words to existing The part for having technology to contribute can be embodied in the form of software product, and the computer software product is stored in one In storage medium (such as ROM/RAM, magnetic disc, CD), including some instructions are make it that a station terminal equipment (can To be mobile phone, computer, server, or network equipment etc.) method that performs each embodiment of the invention.

A kind of device of WLAN cooperation transmission is additionally provided in the present embodiment, and the device is used to realize above-mentioned implementation Example and preferred embodiment, had carried out repeating no more for explanation.As used below, term " module " can be with Realize the combination of the software and/or hardware of predetermined function.Although the device described by following examples is preferably come with software Realize, but hardware, or the realization of the combination of software and hardware is also that may and be contemplated.

Fig. 7 is the apparatus structure block diagram one of cooperation transmission in WLAN according to embodiments of the present invention, the device application In the first access point side, as shown in fig. 7, the device includes：First receiving module 72, for receiving from website One data, wherein, the information for indicating unlatching multipoint cooperative function, website and the first access are carried in the first data Point belongs to same Basic Service Set；Second receiving module 74, is of coupled connections with the first receiving module 72, for receiving the Second data of two access points forwarding, wherein, the second access point and the first access point belong to same multipoint cooperative group, second Data are from the Basic Service Set belonging to the first access point；Processing module 76, is of coupled connections with the second receiving module 74, Had correctly received for judging the first data and the second data, and being sent according to judged result to website for instruction The confirmation message of first data.

Fig. 8 is the apparatus structure block diagram two of cooperation transmission in WLAN according to embodiments of the present invention, the device application In the second access point side, as shown in figure 8, the device includes：3rd receiving module 82, for receiving from website One data, wherein, carried in the first data for indicate open multipoint cooperative function information, first data come from Second access point belongs to the Basic Service Set belonging to the first access point of same cooperative groups；First sending module 84, with the 3rd Receiving module 82 is of coupled connections, for forwarding the first data to the first access point.

Fig. 9 is the apparatus structure block diagram three of cooperation transmission in WLAN according to embodiments of the present invention, the device application In website side, as shown in figure 9, the device includes：Second sending module 92, is counted for sending first to the first access point According to, wherein, the information for indicating unlatching multipoint cooperative function is carried in the first data, website and the first access point belong to In same Basic Service Set.

The present invention is illustrated with reference to the alternative embodiment of the present invention；

Alternative embodiment one：

As shown in figure 3, there are two BSS in network, two BSS AP is respectively AP1 and AP2.STA1 and AP1 belongs to same BSS, and STA2 and AP2 belong to same BSS.AP1 and AP2 carries out building for multipoint cooperative group It is vertical.The sign of multipoint cooperative group can by mutually preserve Basic Service Set home identity or produce basic cooperation group identify into Row difference.The present embodiment describes to preserve Basic Service Set home identity, and AP1 (compares this Basic Service Set home identity Such as BSS color=1) AP2 is sent to, AP2 is also by this BSS Basic Service Set home identity (such as BSS Color=2) It is sent to AP1.AP1 and AP2 preserves and oneself constituted the Basic Service Set home identity of Basic Service Set.

The communication protocol that AP1 and AP2 hold consultation is not limited to wireless local area network technology, can pass through other wireless technologys Or cable technology carries out the foundation of multipoint cooperative group.Merely just list two BSS network condition, but multiple spot The foundation of cooperative groups is not limited to simply two BSS situation, and the WAP of composition multipoint cooperative group can be any It is individual.In addition, overlapping region has mutually been seen whether between AP1 and AP2, except AP1 and AP2 carries out channel in itself Scanning is outer, can also be reported by the website of association, such as STA1 carries out scan channel, reports the situation of BSS around, This when, because STA1 can scan AP2 presence, AP2 relevant information can be reported AP1.AP1 Overlapping region has mutually been seen whether between AP2, AP1 and AP2 can also such as have been managed by more top network element Network element notified.Vertical it can be any one AP or manage these in addition, initiating multipoint cooperative and setting up What AP network element was initiated.

In association process, STA1 and AP1 can carry out capability negotiation to multipoint cooperative, and STA1 understands what AP1 was supported Merging mode and/or response mode.Or (beacon, beacon) is notified by way of broadcast.

In data transmission procedure, STA1 according to the network condition transmission success rates of data (such as before) or can work as The length of preceding radio frames come judge whether open multipoint cooperative function, can optionally carry multipoint cooperative mode of operation information. In the present embodiment, website only carries the instruction and oneself association for opening multipoint cooperative function in the radio frames of transmission Basic Service Set home identity (BSS color=1), the two information are indicated by physical layer preamble.

AP1 receives STA1 radio frames, judges that website is opened by parsing physical layer preamble (Preamble) Multipoint cooperative function, and know that the radio frames are intended for certainly by the BSS color=1, AP1 carried in physical layer preamble Oneself, subsequent AP1 carries out reception processing to follow-up data bag.If subsequent data aspect, AP1 can be properly received It is not required to handle the data of other AP forwardings, if AP1 is unable to properly receive subsequent data aspect, in special time The data of AP2 forwardings are waited, the special time depends on AP1 disposal ability.The special time should be less than acquiescence Short interFrameGap (SIFS).

AP2 has correctly received the preamble that STA1 sends data, it is found that STA1 starts multipoint cooperative function, then AP2 is by the data forwarding received to AP1, and AP2 can also will receive correct data forwarding to AP1.Even if OBSS In the case of, due to BSS color generation occur it is overlapping.If also having BSS around AP2, (its AP is AP5), AP5 BSS color and AP1 BSS Color are identical (BSS color=1), and this when, AP2 was received Data in the BSS where AP5, it is found that its preamble opens multipoint cooperative function, and the data frame is taken The BSS color of band are that 5, AP2 can be by the data forwarding received to AP1.AP1 is receiving the number of AP2 forwardings According to rear, it can not be the data that website is sent in this BSS by the judgement of the information such as MAC address, can abandon.Such as The data of fruit AP2 forwardings are wrong, are merged, and will not also be brought than present worse effect.

AP1 is judged the AP2 data forwarded, if it is possible to individually judged to mistake, then independent judgment, if sentenced It is wrong to break, and can merge, be judged to mistake with the AP1 signals received.AP1 can not be correct to two paths of signals Receive, still, may be properly received to merging signal.

If AP1 can be properly received, the validation testing in the radio frames sent according to STA1 sends confirmation message.AP1 If having handled the data of AP2 forwardings in SIFS, and judge that data are correct, then send acknowledgement frame to STA1. If using aggregate frame (A-MPDU), as long as having a subframe (subframe) correctly, AP1 can be carried out really Recognize message.

Alternative embodiment two：

AP1 and multiple AP (such as AP2, AP4) constitute multipoint cooperative group, during multipoint cooperative is set up and stood, AP1 and AP2, AP4 mutually notify Basic Service Set home identity, and this implementation is distinguished using BSS color, As shown in Figure 10, Figure 10 is the multipoint cooperative schematic diagram of many BSS according to alternative embodiment of the present invention.

STA1 and AP1 belong to same BSS, and AP1 is successfully received STA1 physical layer preamble (Preamble), Parse website and open multipoint cooperative function, by the BSS color carried in physical layer preamble, AP1 knows subsequently Data are intended for oneself, if subsequent AP1 can be properly received subsequent data aspect, AP1 withouts waiting for it The data of his AP forwardings, if AP1 is unable to properly receive subsequent data aspect, wait other turns in special time The data of hair, the special time depends on AP1 disposal ability.

AP2 and AP4 have correctly received the preamble that STA1 sends data, it is found that STA1 starts multipoint cooperative work( Can, then AP2 and AP4 by the data forwarding received to AP1.

If AP2 is in reception state or is not properly received the preamble of STA1 transmissions, AP2 is without normal direction AP1 is forwarded.

AP1 is judged the AP2 and AP4 data forwarded, if it is possible to individually judged to mistake, then independent judgment, If it is determined that being wrong, it can merge, be judged to mistake with the AP1 signals received.AP1 to multiple signals all without Method is properly received, still, may be properly received to merging signal.

If AP1 can be properly received, the validation testing in the radio frames sent according to STA1 sends confirmation message.

Alternative embodiment three：

AP1 and AP2, AP4 carry out the foundation of multipoint cooperative group, and AP1 is by basic service set identification (such as BSS color) AP2 and AP4 are sent to, as shown in Figure 10.

STA1 and AP1 belong to same BSS, and STA1 indicates to open multipoint cooperative function in the radio frames of transmission, And configured information merges mode, information merges mode and forwarded including primary signal, receives AP and only turns correct signal Hair, receives AP and first forwards reception state, and the information of support merges the situation that mode is not limited to foregoing description, other Information, which merges mode, to be indicated.

Information merges mode can go out the merging of support by several bits in physical layer preamble (preamble) come joint instructions State, as shown in table 1, the merging mode supported is indicated using 2 bits.Wherein, if it is indicated that representing to turn for 00 Send out media access control protocol data cell；If it is indicated that servicing single for the media access control protocol that 01 forwarding is received Member；If it is indicated that being 10, forward the reception state parameter of the media access control protocol service unit received to forward again and connect The media access control protocol service unit received.Table 1 only lists the situation that two kinds of bits are indicated, if more Merging mode can use more bits to be indicated.

Table 1

AP1 is successfully received STA1 physical layer preamble (Preamble), parses website and opens multipoint cooperative function, Know that follow-up data is intended for oneself by the BSS color, AP1 that are carried in physical layer preamble.

If it is indicated that information merge mode for forwarding media access control protocol data cell (MPDU), Tu11Shi According to schematic diagram of the merging mode of alternative embodiment of the present invention for forwarding media access control protocol data cell, such as Figure 11 Shown, if subsequent AP1 can be properly received subsequent data aspect, AP1 withouts waiting for other AP forwardings Data, if AP1 is unable to properly receive subsequent data aspect, in special time (acquiescence SIFS or physical layer frame Head indicates new interframe space) in wait the data of AP2 and AP4 forwardings, the special time depends on AP1 processing Ability.

AP2 and AP4 have correctly received the preamble that STA1 sends data, it is found that STA1 starts multipoint cooperative work( Can, and be designated as forwarding media access control protocol data cell, then AP2 and AP4 forwards the MPDU received To AP1.

AP1 is to AP2, and the data of AP4 forwardings are judged, if it is possible to independent to judge to mistake, then independent judgment, such as Fruit judges it is wrong, can merge, be judged to mistake with the AP1 signals received.AP1 can not to two paths of signals It is properly received, still, may be properly received to merging signal.

If it is indicated that information merge mode to receive the media access control protocol service unit that receives of AP forwardings, then AP2 and AP4 carries out correct and false judgment (verification) to the data of reception, and included in data, correct MSDU turns AP1 is issued, Figure 12 is the medium access control association received according to the merging mode of alternative embodiment of the present invention for forwarding The schematic diagram of service unit is discussed, shown in Figure 12, STA1 sends a polymerization bag (A-MPDU), includes four subframes Comprising a MSDU in (subframe 1, subframe 2, subframe 3, subframe 4), each subframe, and Four subframes correspond to MSDU 1, MSDU 2, MSDU 3, MSDU 4.AP1 successfully have received subframe 1 MSDU 1 and MSDU 4 are had successfully received with subframe 3, AP2, AP4 has had successfully received MSDU 1, MSDU 2, MSDU 3,.AP2 is transmitted to AP1 by correct MSDU 1 and MSDU 4 is received, and AP4 will be received correctly MSDU 1, MSDU 2, MSDU 3 is transmitted to AP1.Need this when to distinguish necessity that these MSDU originate Mark, address, sequence number etc..The correct data union generation acknowledgement frame that AP1 is forwarded according to all AP is responded, This when, AP1 may determine that its all data received is all correct, can be sent to AP1 and include all subframes All correct confirmation message.

If it is indicated that information merge mode be the reception shape for first forwarding the media access control protocol service unit received State parameter forwards the media access control protocol service unit received again.So AP2 and AP4 enters to the data of reception Row is correct and false judgment, and the result of processing generated into a status bits figure, and carries the MAC Address of website, The starting sequence number that status bits figure confirms, service identification etc., Figure 13 is the merging side according to alternative embodiment of the present invention The reception state parameter for the media access control protocol service unit that formula receives for forwarding forwards the medium received to visit again The schematic diagram of control protocol service unit is asked, as shown in figure 13, under the state diagram that AP2 and AP4 is sent to AP1 Face mark is corresponding subframe number.

STA1 sends a polymerization bag (A-MPDU), includes four subframe (subframe 1, subframe 2, subframe 3, subframe 4) MSDU or A-MSDU, is included in each subframe.Four subframes correspond to MSDU 1, MSDU 2, MSDU 3, MSDU 4.AP1 successfully have received MSDU 1 and MSDU 3, and AP2 has successfully received MSDU 1 and MSDU 4, AP4 have had successfully received MSDU 1, MSDU 2 and MSDU 3.AP2 and AP4 First by the reception state of the correct and wrong of the subframe received feedback (including necessary distinctive information, the MAC of website Location, the starting sequence number that status bits figure confirms, service identification) give AP1, in the subsequent time, AP2 and AP4 Correct media access control protocol service unit is transmitted to AP1 again, AP2 sends MSDU1 and MSDU 4, AP4 Send MSDU1 and MSDU 2, MSDU 3.The necessity for distinguishing these data sources is needed this when to identify, ground Location, sequence number etc..AP1 generates acknowledgement frame according to the union of all AP status bits figures forwarded and carries out confirmation message (figure Confirmation message only denotes Block Ack Bitmap information, other information relative set in Block ack in 13). Although AP1 is not received successfully to all subframes in itself, the information forwarded by AP2 and AP4, it can be determined that institute There is subframe to be all properly received.If AP2 and AP4 are not received to any MSDU, without state forwarding and MSDU Forwarding.

If it is indicated that information merge mode be the reception shape for first forwarding the media access control protocol service unit received State parameter forwards the media access control protocol data cell received again.So AP2 and AP4 enters to the data of reception Row is correct and false judgment, and the result of processing generated into a status bits figure, and carries the MAC Address of website, The starting sequence number that status bits figure confirms, service identification etc., Figure 14 is the merging side according to alternative embodiment of the present invention The reception state parameter for the media access control protocol service unit that formula receives for forwarding forwards the medium received to visit again The schematic diagram of control protocol data cell is asked, as shown in figure 14, under the state diagram that AP2 and AP4 is sent to AP1 Face mark is corresponding subframe number.

STA1 sends a polymerization bag (A-MPDU), includes four subframe (subframe 1, subframe 2, subframe 3, subframe 4) MPDU, is included in each subframe.Four subframes correspond to MPDU 1, MPDU 2, MPDU 3,MPDU 4.AP1 successfully have received MPDU 1 and MPDU 3, and AP2 has had successfully received MPDU 1 MPDU1, MPDU 2 and MPDU 3 have been had successfully received with MPDU 4, AP4.AP2 and AP4 will first be received Subframe correct and wrong reception state feedback (including necessary distinctive information, the MAC Address of website, state ratio The starting sequence number that spy's figure confirms, service identification) AP1 is given, in the subsequent time, AP2 and AP4 again will be correct Media access control protocol data cell is transmitted to AP1, and AP2 sends MPDU1 and MPDU 4, AP4 send MPDU1 With MPDU 2, MPDU 3.This when identifies without the need to distinguish necessity of these data sources, address, sequence number Deng (MPDU mac frame head includes these information).AP1 gives birth to according to the union of all AP status bits figures forwarded Responded that (confirmation message only denotes Block Ack Bitmap information in Figure 14, and other information exists into acknowledgement frame Relative set in Block ack.In above-mentioned scene, although AP1 does not have successfully received all subframes, but passes through AP2 The information forwarded with AP4, AP1, which may determine that, oneself has had successfully received all subframes.

In view of if being responded using short interFrameGap, AP processing has little time, in multipoint cooperative operation side Interframe space is further comprises in formula, refers to that receiving station sends the interframe space of confirmation message.AP1 uses the configured information Responded.If carrying interframe space in radio frames, AP2 and AP4 will forward information in interframe space To AP1, otherwise without forwarding.

Alternative embodiment four：

Network condition around STA1 scannings, and the AP1 to association is told by the BSS information around existed, and protect Deposit relevant information.

The BSS information that AP1 is reported according to STA1, and the BSS information oneself scanned, set up multipoint cooperative group, Figure 15 is to assist AP to carry out multipoint cooperative according to the website of alternative embodiment of the present invention to set up vertical schematic diagram, such as Figure 15 Shown, STA1, STA2 and AP1 are associated.The AP that STA1 can be scanned is AP2, AP3, AP4. The AP that STA2 can be scanned is AP5 and AP6.STA1 and STA2 preserve the information oneself scanned respectively.STA1 With STA2 by these information reportings to AP1.AP1 and STA2, STA3, STA4, STA5, STA6 set up multiple spot Cooperative groups.AP1 and AP2, AP3, AP4, AP5, AP6 mutually preserve Basic Service Set ownership beacon information.

AP1 notifies the multipoint cooperative group information of foundation to STA1 and STA2 by way of unicast or broadcast.Wherein Multipoint cooperative information includes AP2, AP3, STA4, STA5, STA6 MAC Address, corresponding BSS color Etc. information.

STA1 indicates to open multipoint cooperative function in the radio frames of transmission, and indicates the response message of multipoint cooperative, Information includes the site identity for needing to respond, response time, the information such as corresponding band resource or empty time stream resource.It is many The response message of point cooperation can carry out carrying by PHY layer signaling to be carried by MAC layer signaling. When being carried by MAC layer signaling, it can be carried, can also be carried by domain by independent subframe.STA1 is selected The result and the multipoint cooperative group information of foundation that the AP information of response can be scanned according to oneself are determined.

Receive after the radio frames of STA1 transmissions, it is necessary to which the AP confirmed is correctly judged the data of reception, in nothing The resource that line frame is indicated is responded, and Figure 16 is the signal that response message is indicated according to the website of alternative embodiment of the present invention Figure one, as shown in figure 16, although the multipoint cooperative group of foundation includes AP2, AP3, STA4, STA5, STA6. But, STA1 is during network intercepting before, it is found that can only receive AP2, AP3, STA4 information.This STA1 indicates multiple spot response message in the radio frames of transmission when individual, indicates AP1, AP2, AP3, STA4 is in spy Fixed space-time resource (MU-MIMO) or band resource (OFDMA) mode sends confirmation message.

These subsequent AP forward the data to AP1.It can not forwarded by the AP of STA1 dispatching responses to AP1 Data.STA1 is according to the confirmation message received, if according to state diagram (Block in the confirmation message of all AP transmissions ACK bitmap) union can interpolate that all subframes are correctly received, then need not retransmit, if according to all responses The confirmation that AP is sent, judgment part subframe receives mistake, then need to only be transmitted the subframe of mistake.

Alternative embodiment five

Figure 17 is the schematic diagram two that response message is indicated according to the website of alternative embodiment of the present invention, as shown in figure 17, such as What fruit STA1 was sent is non-aggregate frame, can be indicated by multipoint cooperative in physical layer preamble or MAC layer signaling The response message of multipoint cooperative.The multipoint cooperative response message is only indicated comprising website.The AP of the radio frames is properly received, And the AP indicated in multipoint cooperative response message, directly in response to (ACK) is confirmed, all ACK are in same frequency band Resource is transmitted using phase same rate.Even, what STA1 was sent is non-aggregate frame, can be existed by multipoint cooperative A bit is indicated in physical layer preamble or MAC layer signaling, it is all be properly received the radio frames belong to the cooperative groups AP directly in response to (ACK) is confirmed, all ACK are transmitted in same frequency band resource using phase same rate, All ACK use identical scrambler seed.

Embodiments of the invention additionally provide a kind of storage medium.Alternatively, in the present embodiment, above-mentioned storage medium can The program code for performing following steps to be arranged to storage to be used for：

Alternatively, the specific example in the present embodiment may be referred to showing described in above-described embodiment and optional embodiment Example, the present embodiment will not be repeated here.

Obviously, those skilled in the art should be understood that above-mentioned each module of the invention or each step can be with general Computing device realizes that they can be concentrated on single computing device, or is distributed in multiple computing devices and is constituted Network on, alternatively, the program code that they can be can perform with computing device be realized, it is thus possible to by they Storage is performed by computing device in the storage device, and in some cases, can be to be held different from order herein They, are either fabricated to each integrated circuit modules or will be many in them by the shown or described step of row respectively Individual module or step are fabricated to single integrated circuit module to realize.So, the present invention is not restricted to any specific hardware Combined with software.

The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the technology of this area For personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made is any Modification, equivalent substitution, improvement etc., should be included in the scope of the protection.

Claims

1. a kind of method of cooperation transmission in WLAN, it is characterised in that including：

First access point receives the first data from website, wherein, carried in first data for indicating The information of multipoint cooperative function is opened, the website belongs to same Basic Service Set with first access point；

First access point receives the second data of the second access point forwarding, wherein, second access point and institute State the first access point and belong to same multipoint cooperative group, second data are from basic belonging to first access point Services set；

First access point judged first data and second data, and according to judged result to The website sends the confirmation message that first data are had correctly received for instruction.

2. according to the method described in claim 1, it is characterised in that first access point is to first data and described Second data are judged, and are sent according to judged result to the website and had correctly received described first for instruction The confirmation message package of data is included：

First access point individually judges first data and second data；It is correctly to connect in judged result When receiving first data or second data, first access point sends confirmation message to the website；

When judged result is to be not properly received first data and second data, first access point First data and second data are merged into processing, judge whether the data after merging are correct； In judged result for when being properly received, first access point sends confirmation message to the website.

3. according to the method described in claim 1, it is characterised in that the behaviour of multipoint cooperative is also carried in first data Make mode, wherein, the mode of operation includes：Information merges mode；It is many for indicating that described information merges mode Other WAPs of point cooperative groups in addition to first access point receive the processing mode of the first data.

4. method according to claim 3, it is characterised in that described information, which merges, includes one below：Forward medium Media access control protocol service unit that access-control protocol data cell, forwarding are received, forwarding are received The reception state parameter of media access control protocol service unit forwards the media access control protocol received to take again The reception state parameter for the media access control protocol service unit that business unit, forwarding are received forwards what is received again Media access control protocol data cell.

5. method according to claim 4, it is characterised in that

When described information merges mode for forwarding media access control protocol data cell, first access point connects Receiving the second data of the second access point forwarding includes：First access point receives second access point and sent The media access control protocol data cell for being carried on the second data；

When described information merges the media access control protocol data cell that mode receives for forwarding, described first The second data that access point receives the second access point forwarding include：First access point receives described second and connect The correct media access control service unit of verification for being carried on the second data that access point is sent；

Merge the reception state for the media access control protocol service unit that mode receives for forwarding in described information When forwarding the media access control protocol service unit received again, first access point receives second access The second data that point is sent include：First access point receives the second access point forwarding reception state parameter； First access point receives the correct medium access control of verification for being carried on the second data of the second access point forwarding Service unit processed；

Merge the reception state for the media access control protocol service unit that mode receives for forwarding in described information When forwarding the media access control protocol data cell received again, first access point receives second access The second data that point is sent include：First access point receives the second access point forwarding reception state parameter； First access point receives the correct medium access control of verification for being carried on the second data of the second access point forwarding Data cell processed.

6. method according to claim 5, it is characterised in that the reception state parameter includes：Send described second Media Access Control address, starting sequence number, service identification, the reception state bitmap of data.

7. method according to claim 3, it is characterised in that the mode of operation also includes：Interframe space, wherein, The interframe space is the confirmation message that first access point is sent and sends the time between first data Interval.

8. according to the method described in claim 1, it is characterised in that the sound of multipoint cooperative is also carried in first data Information is answered, wherein, the response message at least includes：Access point identity；Described access point is designated to the station The access point identity that the radio frames that point is sent are confirmed.

9. method according to claim 8, it is characterised in that methods described also includes：

When described access point mark includes first access point, first access point is in first data The band resource of transmission sends confirmation message.

10. method according to claim 8, it is characterised in that the response message also includes：Confirmation message duration, Band resource or empty time stream resource, wherein, it is a length of to the described wireless of the website transmission during confirmation message The duration of the confirmation of frame；The band resource or empty time stream resource are that the radio frames that the website is sent are entered Band resource or the empty time stream resource taken is needed when row confirms.

11. method according to claim 10, it is characterised in that include described first in the response site identity During the mark of access point and second access point,

First access point sends the confirmation message of response in the corresponding band resource of the mark or empty time stream, its In, the confirmation message duration meets the requirement of the confirmation message duration carried in first data；

Second access point sends the confirmation letter of response in the corresponding band resource of the mark or empty time stream Breath, the confirmation duration meets the requirement of the confirmation message duration carried in first data.

12. according to the method described in claim 1, it is characterised in that the access point in the multipoint cooperative group preserves multiple spot association Make the Basic Service Set home identity of other access points in group.

13. according to the method described in claim 1, it is characterised in that also carry Basic Service Set in first data and return Category mark.

14. according to the method described in claim 1, it is characterised in that before the first access point receives first data, Methods described also includes：

First access point notifies the multipoint cooperative mode of operation that first access point is supported to the website.

15. a kind of method of cooperation transmission in WLAN, it is characterised in that including：

Second access point receives the first data from website, wherein, carry and opened for instruction in first data The information of multipoint cooperative function is opened, first data with second access point from belonging to same cooperative groups Basic Service Set belonging to first access point；

Second access point forwards first data to first access point.

16. method according to claim 15, it is characterised in that also carry multipoint cooperative in first data Mode of operation, wherein, the mode of operation includes：Information merges mode；Described information merges mode and is used to indicate Other WAPs of multipoint cooperative group in addition to first access point receive the processing mode of the first data.

17. method according to claim 16, it is characterised in that described information, which merges, includes one below：Forwarding is situated between Matter access-control protocol data cell, forwards the media access control protocol service unit received, and forwarding is received The reception state parameter of media access control protocol service unit forward the media access control protocol received again Service unit, forwards the reception state parameter of the media access control protocol service unit received to forward again and receives Media access control protocol data cell.

18. method according to claim 17, it is characterised in that

Described information merge mode for forwarding media access control protocol data cell when, second access point to First access point, which sends the second data, to be included：Second access point sends to first access point and is carried on The media access control protocol data cell of second data；

When described information merges the media access control protocol data cell that mode receives for forwarding, described second Access point sends the second data to first access point to be included：Second access point is sent out to first access point Send the verification for being carried on the second data correct media access control service unit；

Merge the reception state for the media access control protocol service unit that mode receives for forwarding in described information When forwarding the media access control protocol service unit received again, second access point is to first access point Sending the second data includes：Second access point sends reception state parameter to first access point；Second connects Access point sends the correct media access control service unit of verification for being carried on the second data to first access point；

Merge the reception state for the media access control protocol service unit that mode receives for forwarding in described information When forwarding the media access control protocol data cell received again, second access point is to first access point Sending the second data includes：Second access point sends reception state parameter to first access point；Second connects Access point sends the correct medium access control data unit of verification for being carried on the second data to first access point.

19. method according to claim 18, it is characterised in that described reception state parameter includes sending described the The Media Access Control address of two data, starting sequence number, service identification, reception state bitmap.

20. method according to claim 16, it is characterised in that the mode of operation also includes：Interframe space, its In, the interframe space be the confirmation message that first access point is sent and send between first data when Between be spaced.

21. method according to claim 15, it is characterised in that also carry multipoint cooperative in first data Response message, wherein, the response message includes：Access point identity；Described access point is designated to the website The access point identity that first data sent are confirmed.

22. method according to claim 21, it is characterised in that methods described also includes：

When described access point mark includes the mark of second access point, second access point is described the The band resource that one data are sent sends confirmation message.

23. method according to claim 21, it is characterised in that the response message also include validating that message duration, Band resource or empty time stream resource, wherein, it is a length of to described the first of the website transmission during confirmation message The duration of the confirmation of data；The band resource or empty time stream resource are first number that the website is sent According to band resource or the empty time stream resource for needing to take when being confirmed.

24. method according to claim 21, it is characterised in that include second access in the response message During the mark of point,

Second access point sends the confirmation of response, institute in the corresponding band resource of the mark or empty time stream State the requirement that confirmation duration meets the confirmation message duration carried in first data.

25. a kind of method of cooperation transmission in WLAN, it is characterised in that including：

Website sends the first data to the first access point, wherein, carried in first data for indicating to open The information of multipoint cooperative function, the website belongs to same Basic Service Set with first access point.

26. method according to claim 25, it is characterised in that also carry multipoint cooperative in first data Mode of operation；Wherein, the mode of operation includes：Information merges mode；Described information merges mode and is used to indicate Other WAPs of multipoint cooperative group in addition to first access point receive the processing mode of the first data.

27. method according to claim 26, it is characterised in that described information, which merges, includes one below：Forwarding is situated between Matter access-control protocol data cell, forwarding receive media access control protocol service unit, forwarding receive The reception state parameter of media access control protocol service unit forward the media access control protocol received again The reception state parameter for the media access control protocol service unit that service unit, forwarding are received is forwarded again to be received Media access control protocol data cell.

28. method according to claim 25, it is characterised in that also carry multipoint cooperative in first data Response message, wherein, the response message includes：Access point identity；Described access point is designated to the website The access point identity that first data sent are confirmed.

29. method according to claim 28, it is characterised in that the response message also includes：Confirmation message duration, Band resource or empty time stream resource, wherein, it is a length of to described the first of the website transmission during confirmation message The duration of the confirmation of data；The band resource or empty time stream resource are first number that the website is sent According to band resource or the empty time stream resource for needing to take when being confirmed.

30. the device of cooperation transmission in a kind of WLAN, applied to the first access point side, it is characterised in that including：

First receiving module, for receiving the first data from website, wherein, carried in first data Information for indicating unlatching multipoint cooperative function, the website belongs to same basic service with first access point Collection；

Second receiving module, the second data for receiving the forwarding of the second access point, wherein, second access point Belong to same multipoint cooperative group with first access point, second data are from belonging to first access point Basic Service Set；

Processing module, for judging first data and second data, and according to judged result to The website sends the confirmation message that first data are had correctly received for instruction.

31. the device of cooperation transmission in a kind of WLAN, applied to the second access point side, it is characterised in that including：

3rd receiving module, for receiving the first data from website, wherein, carry and use in first data In the information for indicating unlatching multipoint cooperative function, first data come from belongs to same with second access point Basic Service Set belonging to first access point of cooperative groups；

First sending module, for forwarding first data to first access point.

32. the device of cooperation transmission in a kind of WLAN, applied to website side, it is characterised in that including：

Second sending module, for sending the first data to the first access point, wherein, carried in first data There is the information for indicating unlatching multipoint cooperative function, the website belongs to same basic clothes with first access point Business collection.