CN106572489A - Access and transmission method based on multi-BSS association - Google Patents

Access and transmission method based on multi-BSS association Download PDF

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Publication number
CN106572489A
CN106572489A CN201610957479.7A CN201610957479A CN106572489A CN 106572489 A CN106572489 A CN 106572489A CN 201610957479 A CN201610957479 A CN 201610957479A CN 106572489 A CN106572489 A CN 106572489A
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ap
ma
frame
step
cell
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CN201610957479.7A
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杨懋
李波
姬励
闫中江
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西北工业大学
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0055Physical resource allocation for ACK/NACK
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/02Arrangements for optimising operational condition
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/0005Control or signalling for completing the hand-off
    • H04W36/0011Control or signalling for completing the hand-off for data session or connection
    • H04W36/0016Control or signalling for completing the hand-off for data session or connection for hand-off preparation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/08Reselecting an access point
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/16Performing reselection for specific purposes
    • H04W36/165Performing reselection for specific purposes for improving the overall network performance
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/16Discovering, processing access restriction or access information
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/20Selecting an access point

Abstract

The invention provides an access and transmission method based on multi-BSS association and relates to the communication technical field. First, a cell edge node requests a multi-association process to a master AP so as to associate with a slave AP or associate with the slave AP and notify the master AP. Then, based on the EDCA mechanism, simultaneous back off is carried out, and resource request frames of the master AP and the slave AP are replied, orthogonal frequency-division multiple access (OFDMA) uplink transmission is executed through trigger frame scheduling of each AP, or OFDMA random access is formed by triggering TF-R of each AP. Finally, the cell edge node starts an association switching process. The access and transmission method based on multi-BSS association solves the problem that the cell edge user fairness is bad, adopts the multi-BSS association access and transmission scheme, improves the edge user access and data transmission performance, ensures the cell edge user access and transmission quality, and solves the problem the cell edge user is interfered by the adjacent cell.

Description

一种基于多BSS关联的接入与传输方法 And transmitting the access method based on multiple associated BSS

技术领域 FIELD

[0001] 本发明涉及通信技术领域,尤其是一种无线局域网的接入与传输方法。 [0001] The present invention relates to communications technologies, and in particular a wireless local area network access and transmission methods.

背景技术 Background technique

[0002] IEEE 802.11 无线局域网(Wireless Local Area Networks,WLAN)默认的媒体访问控制(Multiple Access Control,MAC)协议是具有冲突避免功能的载波侦听多址接入(Carrier Sense Multiple Access with Collis1n Avoidance,CSMA/CA)协议。 [0002] IEEE 802.11 WLAN (Wireless Local Area Networks, WLAN) default MAC (Multiple Access Control, MAC) protocol is a Carrier Sense Multiple Access (Carrier Sense Multiple Access with Collis1n Avoidance with collision avoidance function, CSMA / CA) protocol. 该协议中,若干发送站点(stat1n,STA)按指定规则竞争广播信道使用权,使得某站点有可能和其他发送站的发送数据发生冲突,不仅带来信道资源浪费,还会导致网络的吞吐量下降和包平均传输延时增加。 The agreement, a number of the sending station (stat1n, STA) specified broadcast channel competition the right to use the rules, making it possible for a site to send data and other transmitting stations conflict, not only to bring the channel waste of resources, but also lead to network throughput The average packet loss and transmission delay increase. 尤其是下一代WLAN面向高密集场景,小区边缘用户往往受到较大干扰,因此难以获得信道使用权,并且传输速率较低。 Especially for the high density next generation WLAN scenario, the cell edge users are often subject to significant interference, it is difficult to obtain the right to use the channel, and the lower transmission rate. 为保障公平性,需要设法提升小区边缘用户的接入和数据传输质量。 To protect fairness, access and need to try to improve data transmission quality of cell edge users. 随着设备能力不断提升,节点具备同时侦听多个信道的能力,这就为小区边缘用户的公平性问题提供了更多的基础,以便研究出更多的方法来解决现有问题。 With the device capabilities continue to improve, the nodes have the ability to listen to multiple channels simultaneously, which provides a basis for more fairness of cell-edge users, to more developed methods to solve the conventional problems.

发明内容 SUMMARY

[0003] 为了克服现有技术的不足,本发明旨在基于高密集场景下,利用多小区关联的接入与传输方法,解决现有IEEE 802.11 WLAN缺乏提升边缘用户接入和数据传输的手段,小区边缘用户往往受到相邻小区较大干扰,从而公平性较差的问题,提升边缘用户接入和数据传输的性能。 [0003] In order to overcome the deficiencies of the prior art, the present invention aims at a high density on the scene, using a multi-access method of the transmission associated with the cell, to solve the conventional IEEE 802.11 WLAN access users lack the means to enhance the edge and data transmission, cell edge users are often subject to large neighbor cell interference, so that the problem of poor fairness, and enhance the performance of edge users access data transfer.

[0004] 本发明的核心内容主要包括三个部分,即上行过程、下行过程及主关联切换过程。 Core [0004] The present invention mainly includes three parts, i.e. up process, the main process and the associated downlink handover procedure. 首先,小区边缘节点在感受到自身受到较大干扰或者位于小区边缘长期得不到较好服务后,向主无线接入点(access point,AP)请求进行多关联过程,与从AP进行关联或先与从AP进行关联后再通知主AP;其次,基于增强型分布式协调接入(Enhanced DistributedChanneI Access,EDCA)机制在主小区和从小区同时进行退避,并且回复主AP以及从AP的资源请求(resource request,RR)帧,如触发-资源请求帧(trigger frame -resourcerequest,TF-RR),并可通过各个AP的触发帧(trigger frame,TF)的调度来执行的正交频分多址接入(Orthogonal Frequency Divis1n Multiple Access,0FDMA)上行传输,或者通过各个AP触发TF-R而形成OFDMA随机接入;最后,小区边缘节点发现在长期内,某从小区的接入和传输性能优于主小区,可启动关联切换过程。 First, the cell edge in the sense of its own nodes are subject to greater interference at the cell edge or not good long-term service, to the primary wireless access point (access point, AP) requesting multi-association process with the AP association or and then to notify the master AP from the AP to associate; Secondly, based on an enhanced distributed coordination access (enhanced DistributedChanneI access, EDCA) mechanism for retracting the primary cell and the cell simultaneously, and responses from the resource master AP, and requests the AP (resource request, RR) frame, such as the triggering - resource request frame (trigger frame -resourcerequest, TF-RR), and may be triggered by an orthogonal frame of each AP (trigger frame, TF) performs scheduling of a frequency division multiple access access (Orthogonal Frequency Divis1n Multiple access, 0FDMA) uplink transmission, or is formed through each of the random access OFDMA AP trigger TF-R; and finally, a cell found in the long edge node, and the access from a superior transmission performance of the cell primary cell, a handover procedure may initiate association.

[0005] 本发明解决其技术问题所采用的技术方案的详细实施步骤如下: [0005] Step detailed embodiments thereof Solving the Problem solutions employed in the present invention are as follows:

[0006] 步骤1:小区边缘用户节点A在进行多关联时任意选择如下两种实现方式: [0006] Step 1: optionally selected cell edge user node when the following two implementations A multiple correlation is performed:

[0007]实现方式I为当小区边缘用户节点六在!^时间内的平均干扰大于规定的干扰阈值,或者!^时间内平均吞吐量低于规定的吞吐量阈值时,所述干扰阈值、吞吐量阈值以及T1由支持多连接的无线局域网802.11协议规定,向主无线接入点AP (access point)发送多关联初始化帧MA-1NIT (Mult1-associate initializat1n),主AP接收到多关联初始化帧后,向节点A返回多关联初始化同意帧MA-1 NI T-ACK (Mu lt1-associate initializat1nacknowledgement)或者多关联初始化不同意帧MA-1NIT_NAK (Mul t1-associateinitializat1n not acknowledgement),若节点A接收到MA-1NIT-ACK,节点A侦听多个信道,并向节点A所隶属的小区之外的其他小区的多个从AP发送多连接申请帧MA-Req (mult1-access-request) ,不论所述多个从AP的主信道是否相同,MA_Req在多个信道同时发送或者依次分别在各个信道上发送;在节点A发送MA-Req帧后,根据无线局域网802. When [0007] implemented as a mode I when the cell edge users in the six nodes! ^ Average interference within a predetermined time is greater than an interference threshold value, or! ^ Average throughput is below a predetermined threshold value within a certain time, the interference threshold value, throughput threshold and WLAN 802.11 protocol T1 supported by multiple connections predetermined, is transmitted to the main access point AP (access point) multi associated initialization frames MA-1NIT (Mult1-associate initializat1n), the master AP receives multi-association initialization frames , returns to the node A multi-frame correlation agree initialized MA-1 NI T-ACK (Mu lt1-associate initializat1nacknowledgement) or multiple frames associated initialization disagree MA-1NIT_NAK (Mul t1-associateinitializat1n not acknowledgement), when the node A receives MA- 1NIT-ACK, the node listens a plurality of channels, and a plurality of cells other than the node a transmitted cell belongs to a multi-connection request frame MA-Req (mult1-access-request) from the AP, whether the multi- a primary channel is the same from the AP, MA_Req simultaneously or sequentially transmitted on each channel are transmitted in a plurality of channels; after the node a transmits MA-Req frame, according to the wireless LAN 802. 11协议,不是所有从AP都会收到节点A发送的MA-Req帧,从AP中收到MA-Req帧的从AP称为待选从AP,待选从AP在收到MA-Req帧后,向节点A返回多连接申请同意帧MA-Req-ACK (mult1-access-request acknowledgement)或者多连接申请拒绝帧MA-Req-NAK (mult1-access-requestnot acknowledgement);若节点A收到待选从AP的MA-Req-ACK^,则向节点A发送MA-Req-ACK 帧的待选从AP 与节点A 形成关联关系,即节点A 在向节点A 发送MA-Req-ACK 帧的待选从AP上注册,向节点A发送MA-Req-ACK帧的待选从AP为该节点A提供服务,之后转入步骤2; 11 protocol, not all the received node A MA-Req frame will be transmitted from the AP, MA-Req frame received from the AP is called the AP candidate, the candidate AP from the AP after receiving from the MA-Req frame , returns to the node A multi-connection request frame agreed MA-Req-ACK (mult1-access-request acknowledgement) or a multi-application rejection connecting frame MA-Req-NAK (mult1-access-requestnot acknowledgement); if the node A receives the candidate ^, sending MA-Req-ACK frame to the node a from the AP MA-Req-ACK to be selected from the group formed association from the AP to node a, i.e. the node a sending MA-Req-ACK frame to the node a to be selected from the registered AP, sending MA-Req-ACK frame from the AP candidate service for the node a to the node a, then proceeds to step 2;

[0008] 节点A若没有收到主AP的ACK或者没有收到任何一个从AP的MA-Req-ACK,则放弃多基本服务集BSS (Basic Service Set)关联流程; [0008] If node A does not receive an ACK master AP or AP does not receive from any of a MA-Req-ACK, give up the multiple basic service set BSS (Basic Service Set) linking process;

[0009]实现方式2为小区边缘用户节点六在!^时间内的平均干扰大于规定的干扰阈值,或者!^时间内平均吞吐量低于规定的吞吐量阈值时,所述干扰阈值和吞吐量阈值以及T1由支持多连接的无线局域网802.11协议规定,侦听多个信道并向多个从AP发送多连接申请帧MA-Req,无论主AP和从AP的主信道是否相同,MA-Req在多个信道同时发送或者依次分别在各个信道发送;收到节点A发送的MA-Req帧的从AP选择同意帧MA-Req-ACK或拒绝帧MA-Req-NAK多连接申请;若节点A接收到大于等于I个AP返回的MA-Req-ACK,则发送多连接申请同意帧MA_Rpt (mult1-associate-report)向主AP告知多关联结果,即告知是否成功与从AP建立关联,主AP接收到MA_Rpt帧后,返回多连接请求同意应答帧MA_Rpt ACK帧(mult1-associate-report acknowledgement)确认,之后转入步骤2,节点A若没有收到任何一个从AP的MA-Req-ACK,则放弃多BSS关联流程; When the [0009] implementation, 2 cell edge users in the six nodes! ^ Average interference within a predetermined time is greater than an interference threshold value, or! ^ Mean throughput below a certain threshold value within a predetermined time, the interference threshold value and a certain threshold T1 and 802.11 wireless local area network supported by a predetermined multiple connections, and listens for a plurality of channels transmitted from a plurality of multi-connection request frame AP MA-Req, the same regardless of whether the primary AP and the AP from the main channel, MA-Req in a plurality of channels transmitted simultaneously or successively are transmitted in each channel; received from the AP selection MA-Req frame, the node a transmits consent frames MA-Req-ACK, or the rejected frame MA-Req-NAK polylinker application; if node a receives greater than equal to the I AP returned MA-Req-ACK, the sending multi-connection request agree frame MA_Rpt (mult1-associate-report) to inform multiple correlation result to the master AP, i.e., inform the success associated with establishing the AP, the master AP receives after MA_Rpt frame, multiple connection request returns a response frame agreed MA_Rpt ACK frame (mult1-associate-report acknowledgement) confirmation, then proceeds to step 2, if the node a does not receive from the AP in any of a MA-Req-ACK, give up multi-BSS associated processes;

[0010] 步骤2:在节点A多连接流程成功之后,处于多关联状态,多关联状态存在时限X,X由支持多连接的无线局域网802.11协议规定,在多关联状态下,如果有上行数据需要发送,则执行步骤3;如果收到主AP或从AP的调度帧,则执行步骤4;从AP收到发往节点A的下行数据包,则执行步骤5;如果节点A需要切换主AP,则执行步骤6; [0010] Step 2: After node A multi-connection process is successful, in a multi-associated state, there are multiple associated state time X, X specified by the wireless LAN 802.11 multiple connections, in the multi-associated state, if there is uplink data to be transmitting, step 3 is performed; if the master AP is received or the schedule frame from the AP, step 4 is performed; received downlink data packet sent from the node a to the AP, step 5 is performed; if node a master AP needs to switch, step 6 is performed;

[0011] 其中多关联状态的时限X有两种实现方式: [0011] wherein X multiple time associated state implemented in two ways:

[0012] 实现方式I为规定时间X,X由协议规定,边缘节点在多小区BSS (Basic ServiceSet)连接T时间后,边缘节点在进入多关联状态X时间之后,自动切回主小区工作,之后返回步骤I; After the [0012] implementation, I is a predetermined time X, the X from the agreement, the edge node connected to the time T in a multi-cell BSS (Basic ServiceSet), the edge node into a multi-associated state X time, automatically switch back to the main cell work after Returning to step I;

[0013] 实现方式2为节点A切换回主小区后,需等待一段时间D,D由无线局域网802.11协议规定,在时间D内不能传输数据,以免对其他用户造成干扰,若D = 0,表示切换回来后可立即使用信道,即退化为实现方式I,之后返回步骤I; [0013] implementation, node 2 A is switched back to the primary cell, wait a period of time D, D prescribed by the wireless LAN 802.11 protocol, data can not be transmitted within a time D, to avoid interference to other users, if D = 0, indicates can be used immediately after switching back to the channel, i.e., reduced to implementations I, then returns to step I;

[0014] 步骤3:节点A基于增强型分布式协调接入EDCA (Enhanced Distributed ChannelAccess)机制,在主小区和从小区同时执行退避过程,根据EDCA机制中的退避流程,在主小区和从小区分别初始化竞争窗CW值,然后进行退避,任何一个小区退避到O之后,即可执行接入和传输过程,接入和传输过程有三种实现方式,三种实现方式具体描述如下: [0014] Step 3: A Coordination Access Node EDCA (Enhanced Distributed ChannelAccess) mechanism based on an enhanced distributed, and the execution of the primary cell while the cell is retracted, the retraction mechanism according to EDCA flow from the primary cell and the cell, respectively initialization contention window CW value, and then retracted, after a cell is retracted to any O, access and transmission process can be executed, access and transfer process implemented in three ways, the three ways described as follows:

[0015]实现方式1:在退避计数值减到O的小区接入,对应的接入和传输过程中,,所有信道任意选择退避方式,即选择重新退避,或者选择在其他没有退避完的小区保留上一次退避计数值继续退避; [0015] Implementation 1: backoff count is reduced in the O cell access, the access and transmission ,, corresponding to all channels arbitrarily selected backoff mode, i.e. re-backoff selected, or select another cell without completely retracting remain on a backoff count value continues retracted;

[0016] 实现方式2:在当前信号与干扰加噪声比SINR (Signal to Interference plusNoise Rat1)最高的小区或平均SINR最高的小区执行接入和传输过程; [0016] 2 implementations: the current signal to interference plus noise and performs access cell with the highest transmission ratio SINR (Signal to Interference plusNoise Rat1) cell with the highest average or the SINR;

[0017]实现方式3:同一个信道的不同小区,选择SINR最高的小区执行接入和传输过程; [0017] 3 implementations: the same channel of a different cell, selection of cells with the highest SINR and performing access transmission;

[0018] 之后返回步骤2; After returning to step 2 [0018];

[0019] 步骤4:边缘节点A在与多个AP关联之后,回复主AP及从AP的资源请求RR (resourcerequest)帧,资源收集请求RAR (resource allocat1n request)帧通过各个AP的TF的调度来执行基于正交频分多址接入OFDMA (Orthogonal Frequency Divis1n MultipleAccess)技术的上行传输,或者通过各个AP触发触发-资源请求帧TF-RR (trigger frame-resource request)形成OFDMA随机接入,即如果AP发的是TF,那么执行0FDMA;如果AP发的是TF-RR,那么执行OFDMA随机接入; [0019] Step 4: After the edge node A is associated with a plurality of AP, and the AP master reply request RR (resourcerequest) frame from the AP resources, resource collection request RAR (resource allocat1n request) frame by the scheduling each TF to AP performing orthogonal frequency division multiple access OFDMA (orthogonal frequency Divis1n MultipleAccess) uplink transmission technology, or by each AP triggers - resource request frame TF-RR (trigger frame-resource request) forming a random access OFDMA, i.e., if AP is issued TF, OFDMA is executed; if the AP is issued TF-RR, random access OFDMA is executed;

[0020] 返回步骤2; [0020] Returning to step 2;

[0021] 步骤5:节点A在步骤1、步骤2与从AP多关联成功之后,如果从AP没有接收到发往节点A的数据包,继续侦听信道,按照802.11协议执行;如果从AP接收到发往节点A的数据包,修改以太网包头域,将从AP接收到发往节点A的数据包的目的地址修改为节点A的MAC地址,从AP再将修改后的数据包通过有线网络送出去; [0021] Step 5: node A in step 1, step 2 with the following AP plurality successful association, is not received from the AP the data packets sent to the node A continues listening to the channel, performed in accordance with the 802.11 protocol; if received from the AP packets addressed to the node a, modified Ethernet header field, received from the AP to the destination address of the packet addressed to the node a modified MAC address of the node a, the data packet from the wired network through the AP and then modify send out;

[0022] 主AP接收到该数据包后,会转发给节点A,之后返回步骤2; After the [0022] primary AP receives the data packet will be forwarded to the node A, before returning to step 2;

[0023] 步骤6:节点A存在时间门限T2,T2由支持多连接的无线局域网802.11协议规定,如果超过时间门限!^,当某从小区的干扰小于主小区,或吞吐量高于主小区时,则启动关联切换过程,启动关联切换过程的前提是主BSS和从BSS属于同一个扩展服务集合ESS (ExtendedService Set),关联切换过程为:当节点A向待切换的从AP发出重新关联请求(Reassociat1n Request)帧,从AP接收到Reassociat1n Request帧后回复重新关联请求应答帧Gteassociat1n Response)实现关联切换,或节点A向节点A在进行多关联之前隶属小区的主AP发出解除关联Disassociat1n,实现关联切换。 [0023] Step 6: the presence of the node A time threshold T2, T2 from the wireless LAN 802.11 multiple connections predetermined, and if it exceeds the time threshold ^, when a smaller than the main cell from the interfering cell, or throughput higher than the main cell! , then start the associated handover procedure, with the proviso start the associated handover procedure is a front BSS and the BSS belonging to the same extended service set ESS (ExtendedService set), associated with the handover procedure is: when sent from an AP reassociation request to the node a switches to be ( before Reassociat1n request) frame received from the AP after Reassociat1n request reply a reassociation request frame response frame Gteassociat1n response) associated switch implemented, or performing the node a to the node a under the multi-cell associated with the primary AP issuing disassociation Disassociat1n, achieve associated switching .

[0024] 本发明的有益效果是由于采用多BSS关联的接入与传输方法,使得以前受到干扰较大的边缘节点能够与其他小区的AP进行多关联,增加边缘节点的传输机会,解决小区边缘用户公平性较差问题;由于采用了多BSS关联接入与传输方案,提升了边缘用户接入和数据传输的性能,保障了小区边缘用户的接入和传输质量,使得接入和传输性能得以提高,解决了小区边缘用户受到相邻小区较大干扰的问题。 [0024] Advantageous effects of the present invention is due to the BSS associated multi-access and transmission methods, so that a large interference before the edge node can be associated with the AP plurality of other cells, increase the transmission opportunity of the edge node to address a cell edge poor user fairness issues; As a result of the multiple access transmission scheme associated BSS, to enhance the performance of edge users access and data transfer, access and security of the transmission quality of cell edge users, so that access to and transmission performance improve and solve the problem of cell edge users are subject to greater interference of neighboring cells.

附图说明 BRIEF DESCRIPTION

[0025]图1是本发明多BSS关联的场景,其中有三个BSS,STA表示小区边缘用户节点A,主AP表示STA所在小区的AP,从APl、从AP2表示另外两个小区的AP,即待选AP。 [0025] FIG 1 is a multiple of the present invention is associated BSS scenario, wherein three BSS, the STA represents the cell edge user node A, the master AP indicates the serving cell AP the STA, the APl, AP from AP2 represents two additional cells, i.e., candidate AP.

[0026]图2是下行过程中对以太网包头进行修改的示意图。 [0026] FIG. 2 is a schematic diagram of the process of downlink Ethernet packet header is modified.

[0027] 图3是主关联切换过程示意图,其中,Reassociat1n Request是STA向待切换的从AP发出的请求帧,Reassociat1n Response是从AP接收到Reassociat1n Request帧后的回复帧。 [0027] FIG. 3 is a front schematic view of the associated switching process, wherein, Reassociat1n Request is a request frame sent from the AP STA to be switched, Reassociat1n Response is received from the AP to reply Reassociat1n Request frame after frame. Disassociat1n是节点A向原主AP发出的帧。 Disassociat1n original master node A frame is sent by AP.

[0028]图4是实施例1的关键步骤多关联过程图。 [0028] FIG. 4 is an embodiment of a process associated with multiple key steps in FIG.

[0029]图5是实施例2的关键步骤多关联过程图。 [0029] FIG 5 is associated with a multi-step process of Example 2 FIG critical embodiment.

[0030]图6是实施例3的关键步骤多关联过程图。 [0030] FIG. 6 is a multi-step associated with the process of FIG key Example 3.

[0031]图7是实施例4的关键步骤多关联过程图。 [0031] FIG. 7 is a multi-step associated with the process of FIG key Example 4.

[0032]图8是实施例5的关键步骤多关联过程图。 [0032] FIG. 8 is a key step in Example 5 FIG plurality association procedure.

[0033]图9是实施例6的关键步骤多关联过程图。 [0033] FIG. 9 is a critical step in Example 6. FIG plurality association procedure.

[0034]图10是实施例7的场景示意图。 [0034] FIG. 10 is a schematic view of Example 7 scene.

[0035]图11是实施例7的关键步骤多关联过程图。 [0035] FIG. 11 is a key step in Example 7 FIG plurality association procedure.

[0036]图12是实施例8和实施例9的场景示意图。 [0036] FIG. 12 is a schematic diagram of a scene 9 and Example 8.

[0037]图13是实施例8的关键步骤多关联过程图。 [0037] FIG. 13 is a critical step in Example 8. FIG plurality association procedure.

[0038]图14是实施例9的关键步骤多关联过程图。 [0038] FIG. 14 is a key step in Example 9 FIG plurality association procedure.

[0039] 其中,CRC为循环冗余校验Cyclic Redundancy Check,channel为信道,RTS为请求发送Request To Send,BO为退避Back Off,CTS为清除发送Clear To Send0 [0039] wherein, CRC is a cyclic redundancy check Cyclic Redundancy Check, channel to channel, RTS transmission request Request To Send, BO is retracted Back Off, CTS Clear to Send Clear To Send0

具体实施方式 Detailed ways

[0040]下面结合附图和实施例对本发明进一步说明。 Figures and examples further illustrate the present invention [0040] The following binding.

[0041] 本发明可以在无线网卡中通过固件实现,或实现在无线网卡的驱动程序之中。 [0041] The present invention can be implemented in firmware in a wireless network card, or implemented in the wireless network card driver.

[0042]图1是本发明多BSS关联的场景,其中有三个BSS,STA表示小区边缘用户节点A,主AP表示STA所在小区的AP,从APl、从AP2表示另外两个小区的AP,即待选AP,处于小区边缘的STA因为感受到自身受到较大干扰,与从APl进行多关联。 [0042] FIG 1 is a multiple of the present invention is associated BSS scenario, wherein three BSS, the STA represents the cell edge user node A, the master AP indicates the serving cell AP the STA, the APl, AP from AP2 represents two additional cells, i.e., be selected from the AP, the STA at the cell edge because the felt itself subject to greater interference with multiple association from APl. 图2是下行过程中对以太网包头进行修改的示意图,将目的地址由从AP的MAC地址改为节点A的MAC地址。 FIG 2 is a schematic diagram of the Ethernet packet header of the downlink process modify the destination address of the node A to the MAC address of the AP from the MAC address. 图3是主关联切换过程示意图,其中,Reassociat1n Request是STA向待切换的从AP发出的请求帧,Reassociat1n Response 是从AP接收到Reassoci at 1n Request帧后的回复帧。 FIG 3 is a front schematic view of the associated switching process, wherein, Reassociat1n Request is a request frame sent from the AP STA to be switched, Reassociat1n Response is received from the AP to reply Reassoci at 1n Request frame after frame. Disassociat 1n是节点A向原主AP发出的帧。 Disassociat 1n the original master node A frame is sent by AP.

[0043] 具体实施步骤如下: [0043] In particular embodiments the steps of:

[0044] 实施例1 [0044] Example 1

[0045] 图4是实施例1的关键步骤多关联过程图,假设网络中有3个BSS,每个BSS都有一个AP。 [0045] FIG. 4 is a diagram of a multi-step associated with the key process of FIG embodiment, assume that there are three network BSS, BSS has a per AP. 本实施例中的STA隶属于主AP,主AP的主信道为channel I,从APl的主信道为channel I,从AP2的主信道为channel2,从API和从AP2都是从AP。 The present embodiment belongs to the master AP STA, AP master primary channel for channel I, APl from the primary channel for channel I, from the primary channel of AP2 is channel2, from API and AP2 are from the AP. 本实施例举例说明了采用多BSS关联接入的方法,使得小区边缘用户与其他小区的AP建立多关联时,先与主AP进行帧交换,得到主AP同意后,再在不同信道上同时向从AP发送多关联请求帧以建立多关联的方法。 This example illustrates a method of using multiple access associated BSS, such that cell-edge user when establishing a multi-cell other associated with the AP, the first AP performs frame exchange with the master, the master AP to give consent, and then on different channels simultaneously sending an association request frame to establish a multi-multi from the associated AP.

[0046] 步骤1:为当小区边缘用户(STA)在1^时间内的平均干扰大于规定的干扰阈值,或者!^时间内平均吞吐量低于规定的吞吐量阈值时,所述干扰阈值和吞吐量阈值以及T1由支持多连接的无线局域网802.11协议规定,向主无线接入点AP发送多关联初始化帧MA-1NIT,主AP接收到多关联初始化帧后,向STA返回多关联初始化同意帧MA-1NIT-ACK或者多关联初始化不同意帧MA-1NIT-NAK,若STA接收到MA-1NIT-ACK,STA侦听多个信道,并向STA所隶属的小区之外的其他小区的多个从AP发送多连接申请帧MA-Req,不论所述多个从AP的主信道是否相同,MA-Req均在多个信道同时发送;在STA发送MA-Req帧后,根据无线局域网802.11协议,不是所有从AP都会收到STA发送的MA-Req帧,从AP中收到MA-Req帧的从AP称为待选从AP,待选从AP在收到MA-Req帧后,向STA返回多连接申请同意帧MA-Req-ACK或者多连接申请拒绝帧MA-Req-NAK ; [0046] Step 1:! That when the cell edge user (STA) 1 ^ mean interference in the predetermined time is greater than the interference threshold value, or the average throughput ^ lower than a predetermined threshold value within a certain time, the interference threshold value and and a wireless LAN throughput threshold T1 802.11 protocol supported by the predetermined multiple connections, send multiple association initialization in the main frame MA-1NIT wireless access point AP, the AP receives multi-master association initialization frame returns to the STA associated with multiple initialization frame agree MA-1NIT-ACK or multi-frame correlation initialization disagree MA-1NIT-NAK, if the STA receives MA-1NIT-ACK, STA listens for a plurality of channels, and a plurality of cells other than the cell under the STA AP connection request transmitted from the plurality MA-Req frame, regardless of whether the plurality of the same primary channel from the AP, MA-Req are transmitted simultaneously in a plurality of channels; after STA sends MA-Req frame, according to the 802.11 wireless local area network protocol, not all MA-Req frame received from the AP sent by the STA will, MA-Req frame received from the AP is called the AP candidate, the candidate from the AP after receiving the MA-Req frame is returned from the AP to the STA application agree polylinker MA-Req-ACK frame or multiple frames connected to application rejection MA-Req-NAK; 若STA收到待选从AP的MA-Req-ACK帧,则向STA发送MA-Req-ACK帧的待选从AP与STA形成关联关系,S卩STA在向STA发送MA-Req-ACK帧的待选从AP上注册,向STA发送MA-Req-ACK帧的待选从AP为该STA提供服务,之后转入步骤2 ; If the STA received from the candidate frame MA-Req-ACK AP, sending MA-Req-ACK frame to the STA's association to be formed from the selected AP and STA, the STA transmits S Jie MA-Req-ACK frame to the STA the candidate registration from the AP, sending MA-Req-ACK frame from the AP candidate service for the STA STA, then proceeds to step 2;

[0047] STA若没有收到主AP的MA-1NIT-ACK或者没有收到任何一个从AP的MA-Req-ACK,则放弃多基本服务集BSS (Basic Service Set)关联流程; [0047] STA if the AP does not receive the main MA-1NIT-ACK or from the AP does not receive any of a MA-Req-ACK, give up the multiple basic service set BSS (Basic Service Set) linking process;

[0048] 具体步骤如下: [0048] The specific steps are as follows:

[0049] 步骤1.1:为当小区边缘用户(STA)在1^时间内的平均干扰大于规定的干扰阈值,或者!^时间内平均吞吐量低于规定的吞吐量阈值时,所述干扰阈值和吞吐量阈值以及T1*支持多连接的无线局域网802.11协议规定,向主无线接入点AP发送多关联初始化帧MA-1NIT; [0049] Step 1.1:! That when the cell edge user (STA) 1 ^ mean interference in the predetermined time is greater than the interference threshold value, or the average throughput ^ lower than a predetermined threshold value within a certain time, the interference threshold value and and a wireless LAN throughput threshold T1 * 802.11 protocol to support multiple connections predetermined send multiple frames associated initialization MA-1NIT primary wireless access point to the AP;

[0050] 步骤1.2:主AP接收到多关联初始化帧MA-1NIT后,向STA返回多关联初始化同意帧MA-1NIT-ACK或者多关联初始化不同意帧MA-1NIT-NAK。 [0050] Step 1.2: After receiving the master AP associated with multiple initialization frames MA-1NIT, returns to the STA associated with multiple initialization agree MA-1NIT-ACK frame or multiple frames associated initialization disagree MA-1NIT-NAK. 若返回多关联初始化同意帧MA-1NIT-ACK则转至步骤1.3,返回多关联初始化不同意帧MA-1NIT-NAK则返回步骤1.1。 When multiple associated initialization returns agreed MA-1NIT-ACK frames then go to step 1.3, returns associated with multiple initialization disagree MA-1NIT-NAK frame returns to step 1.1.

[0051] 步骤1.3: STA接收到MA-1NIT-ACK,STA侦听多个信道,并分别在信道channel I和channe12上同时向从APl和从AP2发送多连接申请帧MA-Req帧,之后转入步骤1.4 ; [0051] Step 1.3: STA receives the MA-1NIT-ACK, STA listens for a plurality of channels, respectively, on channel channel I and channe12 simultaneously from APl and transmitted from AP2 polylinker application frames MA-Req frame, then turn to step 1.4;

[0052] 步骤1.4:从APl和从AP2在收到MA-Req帧之后,分别在channell和channel2回复MA-Req-ACK帧或者MA-Req-NAK帧,若返回帧MA-Req-ACK帧则转至步骤I.5,若返回MA-Req-NAK帧则返回步骤1.1。 [0052] Step 1.4: APl from AP2 and after receiving from the MA-Req frame, respectively, and in channell channel2 reply MA-Req-ACK frame or MA-Req-NAK frame, if the return frame MA-Req-ACK frame is go to step I.5, if returned MA-Req-NAK frame returns to step 1.1. ;

[0053] 步骤I.5: STA接收到MA-Req-ACK帧,则与从APl、从AP2形成关联关系,S卩STA在向STA发送MA-Req-ACK帧的从AP1、从AP2上注册,向STA发送MA-Req-ACK帧的待选从APl、从AP2为STA提供服务,之后转入步骤2 ;若接收到MA-Req-NAK帧,则返回步骤1.1。 [0053] Step I.5: STA receives the MA-Req-ACK frame, and the APl, AP2 is formed from the association, the STA S Jie transmitted from AP1 MA-Req-ACK frame to the STA, AP2 from the register sending MA-Req-ACK frame from the STA APl candidate, the STA from AP2 to provide service, then go to step 2; if the received MA-Req-NAK frame, return to step 1.1.

[0054] 步骤2:在STA多连接流程成功之后,处于多关联状态,多关联状态存在时限X,X由支持多连接的无线局域网802.11协议规定,在多关联状态下,如果有上行数据需要发送,则执行步骤3;如果收到主AP或从AP的调度帧,则执行步骤4;从AP收到发往STA的下行数据包,则执行步骤5;如果STA需要切换主AP,则执行步骤6; [0054] Step 2: After the STA multi-connection process is successful, in a multi-associated state, there are multiple associated state time X, X specified by the wireless LAN 802.11 multiple connections, in the multi-associated state, if there is uplink data to be transmitted , step 3 is performed; if the master AP is received or the schedule frame from the AP, step 4 is performed; sent to the STA receives downlink data packet from the AP, step 5 is performed; if AP STA needs to switch the main, step 6;

[0055] 其中多关联状态的时限X有两种实现方式: [0055] wherein X multiple time associated state implemented in two ways:

[0056] 实现方式I为规定时间X,X由协议规定,边缘节点在多小区BSS (Basic ServiceSet)连接T时间后,边缘节点STA在进入多关联状态X时间之后,自动切回主小区工作,之后返回步骤I; [0056] implementations I is a predetermined time X, X by the agreement, the edge node in the multi-cell BSS (Basic ServiceSet) connected time T, the edge node STA after entering the multi-associated state X time, automatically switch back to the main cell work, after returning to step I;

[0057] 实现方式2为STA切换回主小区后,需等待一段时间D,D由无线局域网802.11协议规定,在时间D内不能传输数据,以免对其他用户造成干扰,若D = 0,表示切换回来后可立即使用信道,即退化为实现方式I,之后返回步骤I; [0057] implementations 2 after the STA switches back to the primary cell, wait a period of time D, D prescribed by the wireless LAN 802.11 protocol, data can not be transmitted within a time D, to avoid interference to other users, if D = 0, indicates handover after the back channels can be used immediately, i.e., reduced to implementations I, then returns to step I;

[0058] 步骤3: STA基于增强型分布式协调接入EDCA (Enhanced Distributed ChannelAccess)机制,在主小区和从小区同时执行退避过程,根据EDCA机制中的退避流程,在主小区和从小区分别初始化竞争窗CW值,然后进行退避,任何一个小区退避到O之后,即可执行接入和传输过程,接入和传输过程有三种实现方式,三种实现方式具体描述如下: [0058] Step 3: STA Coordination Access EDCA (Enhanced Distributed ChannelAccess) mechanism based on an enhanced distributed, while performing a backoff process from primary cell and the cell, according to the mechanism of EDCA backoff process are initialized from the primary cell and the cell contention window CW value, and then retracted, after a cell is retracted to any O, can perform an access transfer procedure, the access and transfer process and there are three implementations, the three ways described as follows:

[0059]实现方式1:在退避计数值减到O的小区接入,对应的接入和传输过程中,所有信道任意选择退避方式,即选择重新退避,或者选择在其他没有退避完的小区保留上一次退避计数值继续退避; [0059] Implementation 1: backoff count is reduced in the O cell access, the access and transmission process corresponding to all channels arbitrarily selected backoff mode, i.e. re-backoff selection, choose to keep or not completely retracted in other cell last backoff count value continues retracted;

[0060] 实现方式2:在当前信号与干扰加噪声比SINR (Signal to Interference plusNoise Rat1)最高的小区或平均SINR最高的小区执行接入和传输过程; [0060] 2 implementations: the current signal to interference plus noise and performs access cell with the highest transmission ratio SINR (Signal to Interference plusNoise Rat1) cell with the highest average or the SINR;

[0061]实现方式3:同一个信道的不同小区,选择SINR最高的小区执行接入和传输; [0061] 3 implementations: the same channel of a different cell, selection of cells with the highest SINR and performs access transmission;

[0062] 之后返回步骤2; After returning to step 2 [0062];

[0063] 步骤4: STA在与多个AP关联之后,回复主AP及从AP的资源请求RR (resourcerequest)帧,收集帧并通过各个AP的TF的调度来执行基于正交频分多址接入OFDMA(Orthogonal Frequency Divis1n Multiple Access)技术的上行传输,或者通过各个AP触发触发-资源请求帧TF-RR (trigger frame-resource request)形成OFDMA随机接入,如果AP发的是TF,那么执行OFDMA;如果AP发的是TF-RR,那么执行OFDMA随机接入; [0063] Step 4: STA after a plurality of associated AP, and the AP master reply request RR (resourcerequest) resources frame from the AP, and collecting frame is performed based on an orthogonal frequency division multiple access scheduling each TF by an AP uplink transmission into OFDMA (Orthogonal Frequency Divis1n Multiple access) technology, or through the respective AP triggers - resource request frame TF-RR (trigger frame-resource request) formed OFDMA random access, if the AP is issued TF, then execution OFDMA ; If the AP is issued TF-RR, random access OFDMA is executed;

[0064] 返回步骤2; [0064] Returning to step 2;

[0065] 步骤5: STA在步骤I,步骤2与从AP多关联成功之后,如果从AP没有接收到发STA的数据包,继续侦听信道,按照802.11协议执行;如果从AP接收到发往STA的数据包,修改以太网包头域,将从AP接收到发往STA的数据包的目的地址修改为STA的MAC地址,从AP再将修改后的数据包通过有线网络送出去; [0065] Step 5: STA in step I, step 2 with the following AP plurality successful association, is not received from the AP to send the STA packet continues to listen channel, performed in accordance with the 802.11 protocol; if received from the AP sent STA packet, modifying Ethernet header field, a destination address is received from the AP STA to send data packets to modify the MAC address of the STA, send out from the wired network data packet and then modified by the AP;

[0066] 主AP接收到该数据包后,会转发给STA,之后返回步骤2; After the [0066] primary AP receives the data packet will be forwarded to the STA, then return to step 2;

[0067] 步骤6: STA存在时间门限T2,T2由支持多连接的无线局域网802.11协议规定,如果超过时间门限T2,当某从小区的干扰小于主小区,或吞吐量高于主小区时,则启动关联切换过程,启动关联切换过程的前提是主BSS和从BSS属于同一个扩展服务集合ESS (ExtendedService Set),关联切换过程为:当STA向待切换的从AP发出重新关联请求(Reassociat1nRequest)帧,从AP接收到Reassociat1n Request帧后回复Reassociat1n Response帧实现关联切换,或STA向STA在进行多关联之前隶属的小区的主AP发出解除关联(Disassociat1n)帧,实现关联切换。 [0067] Step 6: the presence of STA time threshold T2, T2 from the wireless LAN 802.11 multiple connections predetermined, and if it exceeds the time threshold T2, when a smaller than the main cell from the interfering cell, or throughput higher than the main cell, the start the associated handover procedure, with the proviso start the associated handover procedure is a front BSS and the BSS belonging to the same extended service set ESS (ExtendedService set), associated with the handover procedure is: when the STA issuing a reassociation request from the AP to be switched (Reassociat1nRequest) frame after receiving a frame from the AP Reassociat1n Request reply Reassociat1n Response frame to achieve associated switch, or STA belongs before performing multi-primary cell associated AP issuing disassociation (Disassociat1n) frame to the STA, to achieve the associated switch.

[0068] 实施例2 [0068] Example 2

[0069] 图5是实施例2的关键步骤多关联过程图,假设网络中有3个BSS,每个BSS都有一个AP。 [0069] FIG. 5 is a key step in Example 2 of the embodiment of FIG plurality association procedure, assuming there are three network BSS, BSS has a per AP. 本实施例中的STA隶属于主AP,主AP的主信道为channell。 Examples of the primary AP STA belonging to the present embodiment, the main channel of the master AP channell. 从APl的主信道为channell,从AP2的主信道为channel2。 APl from the primary channel is channell, from the primary channel of AP2 is channel2. 本实施例举例说明了采用多BSS关联接入的方法,使得小区边缘用户与其他小区的AP建立多关联时,先与主AP进行帧交换,得到主AP同意后,再在不同信道上先后向从AP发送多关联请求帧,以建立多关联的方法。 This example illustrates a method of using multiple access associated BSS, such that cell-edge user when establishing a multi-cell other associated with the AP, the first AP performs frame exchange with the master, the master AP to give consent, and then successively to different channels send multiple association request frame from the AP to establish a multi association.

[0070] 步骤1:为当小区边缘用户(STA)在1^时间内的平均干扰大于规定的干扰阈值,或者!^时间内平均吞吐量低于规定的吞吐量阈值时,所述干扰阈值和吞吐量阈值以及T1由支持多连接的无线局域网802.11协议规定,向主无线接入点AP发送多关联初始化帧MA-1NIT,主AP接收到多关联初始化帧后,向STA返回多关联初始化同意帧MA-1NIT-ACK或者多关联初始化不同意帧MA-1NIT-NAK,若STA接收到MA-1NIT-ACK,STA侦听多个信道,并向STA所隶属的小区之外的其他小区的多个从AP发送多连接申请帧MA-Req,不论所述多个从AP的主信道是否相同,MA-Req均在依次分别在各个信道发送;在STA发送MA-Req帧后,根据无线局域网802.11协议,不是所有从AP都会收到STA发送的MA-Req帧,从AP中收到MA-Req帧的从AP称为待选从AP,待选从AP在收到MA-Req帧后,向STA返回多连接申请同意帧MA-Req-ACK或者多连接申请拒绝帧MA-Re [0070] Step 1:! That when the cell edge user (STA) 1 ^ mean interference in the predetermined time is greater than the interference threshold value, or the average throughput ^ lower than a predetermined threshold value within a certain time, the interference threshold value and and a wireless LAN throughput threshold T1 802.11 protocol supported by the predetermined multiple connections, send multiple association initialization in the main frame MA-1NIT wireless access point AP, the AP receives multi-master association initialization frame returns to the STA associated with multiple initialization frame agree MA-1NIT-ACK or multi-frame correlation initialization disagree MA-1NIT-NAK, if the STA receives MA-1NIT-ACK, STA listens for a plurality of channels, and a plurality of cells other than the cell under the STA from the AP sends multiple connection request frame MA-Req, regardless of whether the plurality of the same from the primary channel of the AP, MA-Req are sequentially are transmitted in each channel; after sending MA-Req frame in the STA, the wireless LAN 802.11 , not all the received MA-Req frame will be transmitted from the AP STA received from the AP MA-Req frame from the AP is called the AP candidate, the candidate AP after receiving from the MA-Req frame, the STA Back polylinker consent applications MA-Req-ACK frame or multiple frames connected MA-Re-application rejection q-NAK ;若STA收到待选从AP的MA-Req-ACK帧,则向STA发送MA-Req-ACK帧的待选从AP与STA形成关联关系,即STA在向STA发送MA-Req-ACK帧的待选从AP上注册,向STA发送MA-Req-ACK帧的待选从AP为该STA提供服务,之后转入步骤2; q-NAK; if the STA received from the candidate frame MA-Req-ACK AP, sending candidate MA-Req-ACK frame to the STA from the AP and associates a STA, the STA transmits i.e. MA-Req to the STA -ACK registered candidate frame from the AP, sending MA-Req-ACK frame from the AP candidate service for the STA STA, then proceeds to step 2;

[0071] STA若没有收到主AP的MA-1NIT-ACK或者没有收到任何一个从AP的MA-Req-ACK,则放弃多基本服务集BSS (Basic Service Set)关联流程; [0071] STA if the AP does not receive the main MA-1NIT-ACK or from the AP does not receive any of a MA-Req-ACK, give up the multiple basic service set BSS (Basic Service Set) linking process;

[0072] 具体步骤如下: [0072] The specific steps are as follows:

[0073] 步骤1.1: 5了六在1'1时间内的平均干扰大于规定的干扰阈值,或者!^时间内平均吞吐量低于规定的吞吐量阈值时,所述干扰阈值和吞吐量阈值以及T1由支持多连接的无线局域网802.11协议规定,向主无线接入点AP发送多关联初始化帧MA-1NIT; [0073] Step 1.1:! 5 the average interference six 1'1 time within a predetermined interference threshold is greater than or less than the average throughput ^ a certain threshold value within a predetermined time, the interference threshold value and a certain threshold and T1 by the 802.11 wireless LAN predetermined multiple connections, send multiple frames associated initialization MA-1NIT primary wireless access point to the AP;

[0074] 步骤1.2:主AP接收到多关联初始化帧后,向STA返回多关联初始化同意帧MA-1NIT-ACK或者多关联初始化不同意帧MA-1NIT-NAK。 [0074] Step 1.2: After receiving the master AP plurality association initialization frame returns to the STA associated with multiple initialization agree MA-1NIT-ACK frame or multiple frames associated initialization disagree MA-1NIT-NAK. 若返回多关联初始化同意帧MA-1NIT-ACK则转至步骤1.3,若返回则返回关联初始化不同意帧MA-1NIT-NAK步骤1.1。 When multiple associated initialization returns agreed MA-1NIT-ACK frames then go to step 1.3, if the initialization is returned returns the associated frame does not agree MA-1NIT-NAK step 1.1.

[0075] 步骤1.3: STA接收到MA-1NIT-ACK帧后,侦听多个信道,在信道channel上向从APl发送多连接申请帧MA-Req帧,从APl在收到MA-Req帧之后,在channel I回复MA-Req-ACK帧或者MA-Req-NAK帧;STA若接收到MA-Req-ACK帧,与APl进行关联,之后转入步骤1.4;若接收到MA-Req NAK帧,则返回步骤II。 [0075] Step 1.3: STA after receiving the MA-1NIT-ACK frame, a plurality of listener channels, multi-connection request frame to the MA-Req frame is transmitted on the channel from the Channel APl, after receiving from APl MA-Req frame in channel I reply MA-Req-ACK frame or MA-Req-NAK frames; if the STA receives the MA-Req-ACK frame, associating with APl, then proceeds to step 1.4; if the received frame MA-Req NAK, it returns to step II. To

[0076] 步骤1.4:STA与从APl进行关联后,在信道channel2上向从AP2发送多连接申请帧MA-Req帧,从AP2在收到MA-Req帧之后,在channel2回复MA-Req ACK帧或者MA-Req NAK帧;STA若接收到MA-Req ACK帧,与AP2行关联,之后转入步骤2;若接收到MA-Req NAK帧,则返回步骤1.1。 [0076] Step 1.4: STA after associating the APl, on channel channel2 transmits polylinker request frame MA-Req frame from the AP2 after receiving MA-Req frame, in channel2 reply MA-Req ACK frame from the AP2 or MA-Req NAK frames; if the STA receives the MA-Req ACK frame, the row associated with AP2, then go to step 2; if the received MA-Req NAK frame, return to step 1.1.

[0077] 步骤2:在STA多连接流程成功之后,处于多关联状态,多关联状态存在时限X,X由支持多连接的无线局域网802.11协议规定,在多关联状态下,如果有上行数据需要发送,则执行步骤3;如果收到主AP或从AP的调度帧,则执行步骤4;从AP收到发往STA的下行数据包,则执行步骤5;如果STA需要切换主AP,则执行步骤6; [0077] Step 2: After the STA multi-connection process is successful, in a multi-associated state, there are multiple associated state time X, X specified by the wireless LAN 802.11 multiple connections, in the multi-associated state, if there is uplink data to be transmitted , step 3 is performed; if the master AP is received or the schedule frame from the AP, step 4 is performed; sent to the STA receives downlink data packet from the AP, step 5 is performed; if AP STA needs to switch the main, step 6;

[0078] 其中多关联状态的时限X有两种实现方式: [0078] wherein X multiple time associated state implemented in two ways:

[0079] 实现方式I为规定时间X,X由协议规定,边缘节点在多小区BSS (Basic ServiceSet)连接T时间后,边缘节点STA在进入多关联状态X时间之后,自动切回主小区工作,之后返回步骤I; [0079] implementations I is a predetermined time X, X by the agreement, the edge node in the multi-cell BSS (Basic ServiceSet) connected time T, the edge node STA after entering the multi-associated state X time, automatically switch back to the main cell work, after returning to step I;

[0080] 实现方式2为STA切换回主小区后,需等待一段时间D,D由无线局域网802.11协议规定,在时间D内不能传输数据,以免对其他用户造成干扰,若D = 0,表示切换回来后可立即使用信道,即退化为实现方式I,之后返回步骤I; [0080] implementations 2 after the STA switches back to the primary cell, wait a period of time D, D prescribed by the wireless LAN 802.11 protocol, data can not be transmitted within a time D, to avoid interference to other users, if D = 0, indicates handover after the back channels can be used immediately, i.e., reduced to implementations I, then returns to step I;

[0081] 步骤3: STA基于增强型分布式协调接入EDCA (Enhanced Distributed ChannelAccess)机制,在主小区和从小区同时执行退避过程,根据EDCA机制中的退避流程,在主小区和从小区分别初始化竞争窗CW值,然后进行退避,任何一个小区退避到O之后,即可执行接入和传输过程,接入和传输过程有三种实现方式,三种实现方式具体描述如下: [0081] Step 3: STA Coordination Access EDCA (Enhanced Distributed ChannelAccess) mechanism based on an enhanced distributed, while performing a backoff process from primary cell and the cell, according to the mechanism of EDCA backoff process are initialized from the primary cell and the cell contention window CW value, and then retracted, after a cell is retracted to any O, can perform an access transfer procedure, the access and transfer process and there are three implementations, the three ways described as follows:

[0082]实现方式1:在退避计数值减到O的小区接入,对应的接入和传输过程中,所有信道任意选择退避方式,即选择重新退避,或者选择在其他没有退避完的小区保留上一次退避计数值继续退避; [0082] Implementation 1: backoff count is reduced in the O cell access, the access and transmission process corresponding to all channels arbitrarily selected backoff mode, i.e. re-backoff selection, choose to keep or not completely retracted in other cell last backoff count value continues retracted;

[0083] 实现方式2:在当前信号与干扰加噪声比SINR (Signal to Interference plusNoise Rat1)最高的小区或平均SINR最高的小区执行接入和传输过程; [0083] 2 implementations: the current signal to interference plus noise and performs access cell with the highest transmission ratio SINR (Signal to Interference plusNoise Rat1) cell with the highest average or the SINR;

[0084]实现方式3:同一个信道的不同小区,选择SINR最高的小区执行接入和传输; [0084] 3 implementations: the same channel of a different cell, selection of cells with the highest SINR and performs access transmission;

[0085] 之后返回步骤2; After returning to step 2 [0085];

[0086] 步骤4: STA在与多个AP关联之后,回复主AP及从AP的资源请求RR (resourcerequest)帧,收集帧并通过各个AP的TF的调度来执行基于正交频分多址接入OFDMA(Orthogonal Frequency Divis1n Multiple Access)技术的上行传输,或者通过各个AP触发触发-资源请求帧TF-RR (trigger frame-resource request)形成OFDMA随机接入,如果AP发的是TF,那么执行OFDMA;如果AP发的是TF-RR,那么执行OFDMA随机接入; [0086] Step 4: STA after a plurality of associated AP, and the AP master reply request RR (resourcerequest) resources frame from the AP, and collecting frame is performed based on an orthogonal frequency division multiple access scheduling each TF by an AP uplink transmission into OFDMA (Orthogonal Frequency Divis1n Multiple access) technology, or through the respective AP triggers - resource request frame TF-RR (trigger frame-resource request) formed OFDMA random access, if the AP is issued TF, then execution OFDMA ; If the AP is issued TF-RR, random access OFDMA is executed;

[0087] 返回步骤2; [0087] Returning to step 2;

[0088] 步骤5: STA在步骤I,步骤2与从AP多关联成功之后,如果从AP没有接收到发STA的数据包,继续侦听信道,按照802.11协议执行;如果从AP接收到发往STA的数据包,修改以太网包头域,将从AP接收到发往STA的数据包的目的地址修改为STA的MAC地址,从AP再将修改后的数据包通过有线网络送出去; [0088] Step 5: STA in step I, step 2 with the following AP plurality successful association, is not received from the AP to send the STA packet continues to listen channel, performed in accordance with the 802.11 protocol; if received from the AP sent STA packet, modifying Ethernet header field, a destination address is received from the AP STA to send data packets to modify the MAC address of the STA, send out from the wired network data packet and then modified by the AP;

[0089] 主AP接收到该数据包后,会转发给STA,之后返回步骤2; After the [0089] primary AP receives the data packet will be forwarded to the STA, then return to step 2;

[0090] 步骤6: STA存在时间门限T2,T2由支持多连接的无线局域网802.11协议规定,如果超过时间门限T2,当某从小区的干扰小于主小区,或吞吐量高于主小区时,则启动关联切换过程,启动关联切换过程的前提是主BSS和从BSS属于同一个扩展服务集合ESS (ExtendedService Set),关联切换过程为:当STA向待切换的从AP发出重新关联请求Reassociat1nRequest帧,从AP接收到Reassociat1n Request帧后回复Reassociat1n Response帧实现关联切换,或STA向STA在进行多关联之前隶属的小区的主AP发出解除关联Disassociat1n帧,实现关联切换。 [0090] Step 6: the presence of STA time threshold T2, T2 from the wireless LAN 802.11 multiple connections predetermined, and if it exceeds the time threshold T2, when a smaller than the main cell from the interfering cell, or throughput higher than the main cell, the start the associated handover procedure, with the proviso start the associated handover procedure is a front BSS and the BSS belonging to the same extended service set ESS (ExtendedService set), associated with the handover procedure is: when the STA resends the association from the AP to be switched request Reassociat1nRequest frame, from belongs implemented before responding Reassociat1n Response frame associated AP after receiving the handover Reassociat1n Request frame, or associated to the STA STA performing multi-cell AP sent Disassociat1n main frame disassociation, association achieve handover.

[0091] 实施例3 [0091] Example 3

[0092] 图6是实施例3的关键步骤多关联过程图,假设网络中有3个BSS,每个BSS都有一个AP。 [0092] FIG. 6 is a key step in Example 3. FIG plurality association process embodiment, it is assumed there are three network BSS, BSS has a per AP. 本实施例中的STA隶属于主AP,主AP的主信道为channell。 Examples of the primary AP STA belonging to the present embodiment, the main channel of the master AP channell. 从APl的主信道为channell,从AP2的主信道为channel2,从API和从AP2都是从AP。 APl from the primary channel is channell, from the primary channel of AP2 is channel2, from API and AP2 are from the AP. 本实施例举例说明了采用多BSS关联接入的方法,使得小区边缘用户与其他小区的AP建立多关联时,先同时向不同信道的从AP发送多关联请求帧,得到从AP同意后,再通知主AP以建立多关联的方法。 This example illustrates a method of using a multi-BSS associated access, so that the cell edge user when establishing a multi associated with the AP other cells to simultaneously send multiple related to the different channels from the AP request frame, with the consent from the AP, then notify the master AP to establish a multi association.

[0093] 步骤1:小区边缘用户5了六在1'1时间内的平均干扰大于规定的干扰阈值,或者T1时间内平均吞吐量低于规定的吞吐量阈值时,所述干扰阈值和吞吐量阈值以及T1由支持多连接的无线局域网802.11协议规定,侦听多个信道并向多个从AP发送多连接申请帧MA-Req,无论主AP和从AP的主信道是否相同,MA-Req均在多个信道同时发送;收至IjSTA发送的MA-Req帧的从AP选择同意帧MA-Req ACK或拒绝帧MA-Req NAK多连接申请;若STA接收到大于等于I个AP返回的MA-Req ACK,贝Ij发送多连接申请同意帧MA_Rpt (mult1-associate-report)向主AP告知多关联结果,即告知是否成功与从AP建立关联,主AP接收到MA_Rpt帧后,返回MA_Rpt-ACK确认,之后转入步骤2,若没有收到任何一个从AP的ACK,则放弃多BSS关联流程。 [0093] Step 1: when the average interference over 1'1 six times the cell edge users 5 greater than the predetermined interference threshold, or the average throughput is below a predetermined threshold value within a certain time T1, the interference threshold, and throughput threshold T1 and 802.11 wireless local area network supported by a predetermined multiple connections, and listens for a plurality of channels connecting a plurality of multi-transmission request frame MA-Req from the AP, and the AP is the same regardless of the main channel from the AP master, both MA-Req a plurality of simultaneous transmission channels; MA-Req frame close to the IjSTA transmitted frames agree to or to refuse MA-Req ACK frame MA-Req NAK polylinker from the application AP; greater than or equal if the STA receives the I AP returned MA- Req ACK, shellfish Ij send multiple connection request agree frame MA_Rpt (mult1-associate-report) to inform multiple correlation result to the master AP, i.e., inform the success associated with establishing the AP, the master AP receives MA_Rpt frame returns MA_Rpt-ACK acknowledgment , then proceeds to step 2, if one does not receive any ACK AP from, the linking process is abandoned plurality BSS. 具体步骤如下: Specific steps are as follows:

[0094] 步骤1.1: STA计算在T1时间内的平均干扰大于规定的干扰阈值,或者T1时间内平均吞吐量低于规定的吞吐量阈值时,所述干扰阈值和吞吐量阈值以及T1由支持多连接的无线局域网802.11协议规定,之后转入步骤1.2; [0094] Step 1.1: STA calculates the average interference over a predetermined time T1 is greater than the interference threshold value, or the average throughput is below a certain threshold value within a predetermined time T1, the interference threshold value and a certain threshold and supported by multiple T1 802.11 wireless LAN protocol connection specified, then proceeds to step 1.2;

[0095] 步骤1.2: STA侦听channel I和channel2这两个2个信道,并同时在两个信道上向从API和从AP2发送多连接申请帧MA-Req,之后转入步骤1.3; [0095] Step 1.2: STA listens channel2 both channel I and channel 2, and at the same time to the two channels from the transmitted API and AP2 connected to the multi-frame application MA-Req, then proceeds to step 1.3;

[0096] 步骤I.3:收到申请帧MA-Re q的从API和从AP2在收到MA-Re q帧之后,分别在channel I和channel2上选择发送同意帧MA-Req-ACK或拒绝帧MA-Req-NAK多连接申请;如果发送MA-Req-ACK则转入步骤1.4,如果发送MA-Req-NAK则转入步骤1.1 ; [0096] Step I.3: consent received from the API and AP2 transmit after receiving MA-Re q frames were selected in the frame from the channel I and channel2 MA-Req-ACK frame or refusal of MA-Re q MA-Req-NAK frame polylinker application; if sending MA-Req-ACK then proceeds to step 1.4, if the transmission MA-Req-NAK then proceeds to step 1.1;

[0097] 步骤1.4:若STA接收到从API和从AP2的MA-Req-ACK帧,则与从APl、从AP2进行关联,再发送MA_Rpt帧向主AP告知多关联结果,之后转入步骤1.5;若接收到MA-Req NAK帧,则返回步骤1.1; [0097] Step 1.4: If the STA received from the API and is informed from the MA-Req-ACK frame and AP2, AP2 from the association APl, MA_Rpt retransmission frame to the master AP multiple correlation result, then proceeds to step 1.5 ; when receiving the MA-Req NAK frame, the process returns to step 1.1;

[0098] 步骤1.5:主AP接收到MA-Rpt帧后,向STA发送MA-Rpt-ACK帧确认,之后转入步骤2,若没有收到任何一个从AP的ACK,则放弃多BSS关联流程。 [0098] Step 1.5: After receiving the master AP MA-Rpt frame is transmitted to the STA MA-Rpt-ACK acknowledgment frame, then proceeds to step 2, if the ACK is not received from any of the AP, the BSS associated with multiple process abandon . ;

[0099] 步骤2:在STA多连接流程成功之后,处于多关联状态,多关联状态存在时限X,X由支持多连接的无线局域网802.11协议规定,在多关联状态下,如果有上行数据需要发送,则执行步骤3;如果收到主AP或从AP的调度帧,则执行步骤4;从AP收到发往STA的下行数据包,则执行步骤5;如果STA需要切换主AP,则执行步骤6; [0099] Step 2: After the STA multi-connection process is successful, in a multi-associated state, there are multiple associated state time X, X specified by the wireless LAN 802.11 multiple connections, in the multi-associated state, if there is uplink data to be transmitted , step 3 is performed; if the master AP is received or the schedule frame from the AP, step 4 is performed; sent to the STA receives downlink data packet from the AP, step 5 is performed; if AP STA needs to switch the main, step 6;

[0100] 其中多关联状态的时限X有两种实现方式: [0100] wherein X multiple time associated state implemented in two ways:

[0101] 实现方式I为规定时间X,X由协议规定,边缘节点在多小区BSS (Basic ServiceSet)连接T时间后,边缘节点STA在进入多关联状态X时间之后,自动切回主小区工作,之后返回步骤I; [0101] implementations I is a predetermined time X, X by the agreement, the edge node in the multi-cell BSS (Basic ServiceSet) connected time T, the edge node STA after entering the multi-associated state X time, automatically switch back to the main cell work, after returning to step I;

[0102] 实现方式2为STA切换回主小区后,需等待一段时间D,D由无线局域网802.11协议规定,在时间D内不能传输数据,以免对其他用户造成干扰,若D = 0,表示切换回来后可立即使用信道,即退化为实现方式I,之后返回步骤I; [0102] implementations 2 after the STA switches back to the primary cell, wait a period of time D, D prescribed by the wireless LAN 802.11 protocol, data can not be transmitted within a time D, to avoid interference to other users, if D = 0, indicates handover after the back channels can be used immediately, i.e., reduced to implementations I, then returns to step I;

[0103] 步骤3: STA基于增强型分布式协调接入EDCA (Enhanced Distributed ChannelAccess)机制,在主小区和从小区同时执行退避过程,根据EDCA机制中的退避流程,在主小区和从小区分别初始化竞争窗CW值,然后进行退避,任何一个小区退避到O之后,即可执行接入和传输过程,接入和传输过程有三种实现方式,三种实现方式具体描述如下: [0103] Step 3: STA Coordination Access EDCA (Enhanced Distributed ChannelAccess) mechanism based on an enhanced distributed, while performing a backoff process from primary cell and the cell, according to the mechanism of EDCA backoff process are initialized from the primary cell and the cell contention window CW value, and then retracted, after a cell is retracted to any O, can perform an access transfer procedure, the access and transfer process and there are three implementations, the three ways described as follows:

[0104]实现方式1:在退避计数值减到O的小区接入,对应的接入和传输过程中,所有信道任意选择退避方式,即选择重新退避,或者选择在其他没有退避完的小区保留上一次退避计数值继续退避; [0104] Implementation 1: backoff count is reduced in the O cell access, the access and transmission process corresponding to all channels arbitrarily selected backoff mode, i.e. re-backoff selection, choose to keep or not completely retracted in other cell last backoff count value continues retracted;

[0105] 实现方式2:在当前信号与干扰加噪声比SINR (Signal to Interference plusNoise Rat1)最高的小区或平均SINR最高的小区执行接入和传输过程; [0105] 2 implementations: the current signal to interference plus noise and performs access cell with the highest transmission ratio SINR (Signal to Interference plusNoise Rat1) cell with the highest average or the SINR;

[0106]实现方式3:同一个信道的不同小区,选择SINR最高的小区执行接入和传输; [0106] 3 implementations: the same channel of a different cell, selection of cells with the highest SINR and performs access transmission;

[0107] 之后返回步骤2; After returning to step 2 [0107];

[0108] 步骤4: STA在与多个AP关联之后,回复主AP及从AP的资源请求RR (resourcerequest)帧,收集帧并通过各个AP的TF的调度来执行基于正交频分多址接入OFDMA(Orthogonal Frequency Divis1n Multiple Access)技术的上行传输,或者通过各个AP触发触发-资源请求帧TF-RR (trigger frame-resource request)形成OFDMA随机接入,如果AP发的是TF,那么执行OFDMA;如果AP发的是TF-RR,那么执行OFDMA随机接入; [0108] Step 4: STA after a plurality of associated AP, and the AP master reply request RR (resourcerequest) resources frame from the AP, and collecting frame is performed based on an orthogonal frequency division multiple access scheduling each TF by an AP uplink transmission into OFDMA (Orthogonal Frequency Divis1n Multiple access) technology, or through the respective AP triggers - resource request frame TF-RR (trigger frame-resource request) formed OFDMA random access, if the AP is issued TF, then execution OFDMA ; If the AP is issued TF-RR, random access OFDMA is executed;

[0109] 返回步骤2; [0109] Returning to step 2;

[0110] 步骤5: STA在步骤I,步骤2与从AP多关联成功之后,如果从AP没有接收到发STA的数据包,继续侦听信道,按照802.11协议执行;如果从AP接收到发往STA的数据包,修改以太网包头域,将从AP接收到发往STA的数据包的目的地址修改为STA的MAC地址,从AP再将修改后的数据包通过有线网络送出去; [0110] Step 5: STA in step I, step 2 with the following AP plurality successful association, is not received from the AP to send the STA packet continues to listen channel, performed in accordance with the 802.11 protocol; if received from the AP sent STA packet, modifying Ethernet header field, a destination address is received from the AP STA to send data packets to modify the MAC address of the STA, send out from the wired network data packet and then modified by the AP;

[0111] 主AP接收到该数据包后,会转发给STA,之后返回步骤2; After the [0111] primary AP receives the data packet will be forwarded to the STA, then return to step 2;

[0112] 步骤6: STA存在时间门限T2,T2由支持多连接的无线局域网802.11协议规定,如果超过时间门限T2,当某从小区的干扰小于主小区,或吞吐量高于主小区时,则启动关联切换过程,启动关联切换过程的前提是主BSS和从BSS属于同一个扩展服务集合ESS (ExtendedService Set),关联切换过程为:当STA向待切换的从AP发出重新关联请求Reassociat1nRequest帧,从AP接收到Reassociat1n Request帧后回复Reassociat1n Response帧实现关联切换,或STA向STA在进行多关联之前隶属的小区的主AP发出解除关联Disassociat1n帧,实现关联切换。 [0112] Step 6: the presence of STA time threshold T2, T2 from the wireless LAN 802.11 multiple connections predetermined, and if it exceeds the time threshold T2, when a smaller than the main cell from the interfering cell, or throughput higher than the main cell, the start the associated handover procedure, with the proviso start the associated handover procedure is a front BSS and the BSS belonging to the same extended service set ESS (ExtendedService set), associated with the handover procedure is: when the STA resends the association from the AP to be switched request Reassociat1nRequest frame, from belongs implemented before responding Reassociat1n Response frame associated AP after receiving the handover Reassociat1n Request frame, or associated to the STA STA performing multi-cell AP sent Disassociat1n main frame disassociation, association achieve handover.

[0113] 实施例4 [0113] Example 4

[0114] 图7是实施例4的关键步骤多关联过程图,假设网络中有3个BSS,每个BSS都有一个AP。 [0114] FIG. 7 is a key step in Example 4. FIG plurality association procedure, assuming there are three network BSS, BSS has a per AP. 本实施例中的STA隶属于主AP,主AP的主信道为channell。 Examples of the primary AP STA belonging to the present embodiment, the main channel of the master AP channell. 从APl的主信道为channell,从AP2的主信道为channel2。 APl from the primary channel is channell, from the primary channel of AP2 is channel2. 本实施例举例说明了采用多BSS关联接入的方法,使得小区边缘用户与其他小区的AP建立多关联时,先向不同信道的从AP先后发送多关联请求帧,得到从AP同意后再通知主AP以建立多关联的方法。 This example illustrates a method of using multiple access associated BSS, such that cell-edge user when establishing a multi-cell other associated with the AP, which sends a plurality Xianxiang different channels from the AP association request frame from the AP informed consent before multi master AP to establish the association.

[0115] 步骤1:小区边缘用户(STA)在1^时间内的平均干扰大于规定的干扰阈值,或者!^时间内平均吞吐量低于规定的吞吐量阈值时,所述干扰阈值和吞吐量阈值以及T1由支持多连接的无线局域网802.11协议规定,侦听多个信道并向多个从AP发送多连接申请帧MA-Req,无论主AP和从AP的主信道是否相同,MA-Req依次分别在各个信道发送;收至IjSTA发送的MA-Req帧的从AP选择同意帧MA-Req ACK或拒绝帧MA-Req NAK多连接申请;若STA接收到大于等于I个AP返回的MA-Req ACK,则发送多连接申请同意帧MA_Rpt (mult1-associate-report)向主AP告知多关联结果,即告知是否成功与从AP建立关联,主AP接收到MA_Rpt帧后,返回MA_Rpt-ACK确认,之后转入步骤2,若没有收到任何一个从AP的ACK,则放弃多BSS关联流程。 [0115] Step 1:! Average interference cell edge user (STA) in a ^ time greater than a predetermined interference threshold value, or the average throughput ^ lower than a predetermined threshold value within a certain time, the interference threshold value and a certain threshold T1 and 802.11 wireless local area network supported by a predetermined multiple connections, and listens for a plurality of channels connecting a plurality of multi-transmission request frame MA-Req from the AP, and the AP is the same regardless of the main channel from the AP master, MA-Req sequentially It is transmitted in the respective channels; close to the AP agree to the frame MA-Req ACK or the rejected frame MA-Req NAK polylinker application MA-Req frame IjSTA transmitted; if the STA receives not less than the I AP returned MA-Req ACK, the sending multiple after the connection request agree frame MA_Rpt (mult1-associate-report) to inform multiple correlation result to the master AP, i.e., inform the success associated with establishing the AP, the master AP receives MA_Rpt frame returns MA_Rpt-ACK confirmation, Go to step 2. If not received from any of the ACK AP is discarded plurality BSS linking process. 具体步骤如下: Specific steps are as follows:

[0116] 步骤1.1: 5了六在1'1时间内的平均干扰大于规定的干扰阈值,或者!^时间内平均吞吐量低于规定的吞吐量阈值时,所述干扰阈值和吞吐量阈值以及T1由支持多连接的无线局域网802.11协议规定。 [0116] Step 1.1:! 5 the average interference six 1'1 time within a predetermined interference threshold is greater than or less than the average throughput ^ a certain threshold value within a predetermined time, the interference threshold value and a certain threshold and T1 is defined by a multi-protocol support wireless LAN 802.11 connection.

[0117] 步骤1.2:侦听channe 11和channe 12这两个2个信道,并在channel I信道上向从APl发送多连接申请帧MA-Req; [0117] Step 1.2: listening channe 11 channe 12 and both two channels, and transmits the connection request frame from the plurality APl MA-Req to the channel in the channel I;

[0118] 步骤1.3:从APl在收到MA-Req帧之后,根据在channel I回复MA-Req-ACK帧或者MA-Req-NAK帧; [0118] Step 1.3: after receiving from APl MA-Req frame, according to the channel I reply MA-Req-ACK frame or MA-Req-NAK frame;

[0119] 步骤1.4:若STA接收到从API的MA-Req-ACK帧,则与从API进行关联,之后转入步骤1.5;若接收到MA-Req-NAK帧,则返回步骤1.1。 [0119] Step 1.4: If the STA receives, and from the MA-Req-ACK frame from API API associated, then proceeds to step 1.5; if the received MA-Req-NAK frame, return to step 1.1.

[0120] 步骤1.5: STA与从APl进行关联后,在channel2信道上向从AP2发送多连接申请帧MA-Req,从AP2 在收到MA-Req帧之后,在channel2回复MA-Req-ACK帧或者MA-Req-NAK帧,之后转入步骤1.6; [0120] Step 1.5: STA association after the APl, in channel2 channel connection request to send multiple frames MA-Req from AP2, AP2 after receiving from the MA-Req frame, in channel2 reply MA-Req-ACK frame or MA-Req-NAK frame, then proceeds to step 1.6;

[0121] 步骤1.6:STA接收到从AP2的MA-Req-ACK帧,与从AP2进行关联,之后转入步骤1.7;若接收到MA-Req-NAK帧,则返回步骤1.1。 [0121] Step 1.6: STA receives, from the MA-Req-ACK frame from the AP2 AP2 associated, then proceeds to step 1.7; if the received MA-Req-NAK frame, return to step 1.1.

[0122] 步骤I.7:主AP接收到MA-Rpt帧后,向主AP发送MA-Rpt-ACK帧确认;之后转入步骤2,否则放弃多BSS关联流程; [0122] Step I.7: After receiving the master AP MA-Rpt frame is transmitted to the master AP MA-Rpt-ACK acknowledgment frame; Step 2 after the transition, before giving up multiple BSS linking process;

[0123] 步骤2:在STA多连接流程成功之后,处于多关联状态,多关联状态存在时限X,X由支持多连接的无线局域网802.11协议规定,在多关联状态下,如果有上行数据需要发送,则执行步骤3;如果收到主AP或从AP的调度帧,则执行步骤4;从AP收到发往STA的下行数据包,则执行步骤5;如果STA需要切换主AP,则执行步骤6; [0123] Step 2: After the STA multi-connection process is successful, in a multi-associated state, there are multiple associated state time X, X specified by the wireless LAN 802.11 multiple connections, in the multi-associated state, if there is uplink data to be transmitted , step 3 is performed; if the master AP is received or the schedule frame from the AP, step 4 is performed; sent to the STA receives downlink data packet from the AP, step 5 is performed; if AP STA needs to switch the main, step 6;

[0124] 其中多关联状态的时限X有两种实现方式: [0124] wherein X multiple time associated state implemented in two ways:

[0125] 实现方式I为规定时间X,X由协议规定,边缘节点在多小区BSS (Basic ServiceSet)连接T时间后,边缘节点STA在进入多关联状态X时间之后,自动切回主小区工作,之后返回步骤I; [0125] implementations I is a predetermined time X, X by the agreement, the edge node in the multi-cell BSS (Basic ServiceSet) connected time T, the edge node STA after entering the multi-associated state X time, automatically switch back to the main cell work, after returning to step I;

[0126] 实现方式2为STA切换回主小区后,需等待一段时间D,D由无线局域网802.11协议规定,在时间D内不能传输数据,以免对其他用户造成干扰,若D = 0,表示切换回来后可立即使用信道,即退化为实现方式I,之后返回步骤I; [0126] implementations 2 after the STA switches back to the primary cell, wait a period of time D, D prescribed by the wireless LAN 802.11 protocol, data can not be transmitted within a time D, to avoid interference to other users, if D = 0, indicates handover after the back channels can be used immediately, i.e., reduced to implementations I, then returns to step I;

[0127] 步骤3: STA基于增强型分布式协调接入EDCA (Enhanced Distributed ChannelAccess)机制,在主小区和从小区同时执行退避过程,根据EDCA机制中的退避流程,在主小区和从小区分别初始化竞争窗CW值,然后进行退避,任何一个小区退避到O之后,即可执行接入和传输过程,接入和传输过程有三种实现方式,三种实现方式具体描述如下: [0127] Step 3: STA Coordination Access EDCA (Enhanced Distributed ChannelAccess) mechanism based on an enhanced distributed, while performing a backoff process from primary cell and the cell, according to the mechanism of EDCA backoff process are initialized from the primary cell and the cell contention window CW value, and then retracted, after a cell is retracted to any O, can perform an access transfer procedure, the access and transfer process and there are three implementations, the three ways described as follows:

[0128]实现方式1:在退避计数值减到O的小区接入,对应的接入和传输过程中,所有信道任意选择退避方式,即选择重新退避,或者选择在其他没有退避完的小区保留上一次退避计数值继续退避; [0128] Implementation 1: backoff count is reduced in the O cell access, the access and transmission process corresponding to all channels arbitrarily selected backoff mode, i.e. re-backoff selection, choose to keep or not completely retracted in other cell last backoff count value continues retracted;

[0129] 实现方式2:在当前信号与干扰加噪声比SINR (Signal to Interference plusNoise Rat1)最高的小区或平均SINR最高的小区执行接入和传输过程; [0129] 2 implementations: the current signal to interference plus noise and performs access cell with the highest transmission ratio SINR (Signal to Interference plusNoise Rat1) cell with the highest average or the SINR;

[0130]实现方式3:同一个信道的不同小区,选择SINR最高的小区执行接入和传输; [0130] 3 implementations: the same channel of a different cell, selection of cells with the highest SINR and performs access transmission;

[0131] 之后返回步骤2; After returning to step 2 [0131];

[0132] 步骤4: STA在与多个AP关联之后,回复主AP及从AP的资源请求RR (resourcerequest)帧,收集帧并通过各个AP的TF的调度来执行基于正交频分多址接入OFDMA(Orthogonal Frequency Divis1n Multiple Access)技术的上行传输,或者通过各个AP触发触发-资源请求帧TF-RR (trigger frame-resource request)形成OFDMA随机接入,如果AP发的是TF,那么执行OFDMA;如果AP发的是TF-RR,那么执行OFDMA随机接入; [0132] Step 4: STA after a plurality of associated AP, and the AP master reply request RR (resourcerequest) resources frame from the AP, and collecting frame is performed based on an orthogonal frequency division multiple access scheduling each TF by an AP uplink transmission into OFDMA (Orthogonal Frequency Divis1n Multiple access) technology, or through the respective AP triggers - resource request frame TF-RR (trigger frame-resource request) formed OFDMA random access, if the AP is issued TF, then execution OFDMA ; If the AP is issued TF-RR, random access OFDMA is executed;

[0133] 返回步骤2; [0133] Returning to step 2;

[0134] 步骤5: STA在步骤I,步骤2与从AP多关联成功之后,如果从AP没有接收到发STA的数据包,继续侦听信道,按照802.11协议执行;如果从AP接收到发往STA的数据包,修改以太网包头域,将从AP接收到发往STA的数据包的目的地址修改为STA的MAC地址,从AP再将修改后的数据包通过有线网络送出去; [0134] Step 5: STA in step I, step 2 with the following AP plurality successful association, is not received from the AP to send the STA packet continues to listen channel, performed in accordance with the 802.11 protocol; if received from the AP sent STA packet, modifying Ethernet header field, a destination address is received from the AP STA to send data packets to modify the MAC address of the STA, send out from the wired network data packet and then modified by the AP;

[0135] 主AP接收到该数据包后,会转发给STA,之后返回步骤2; After the [0135] primary AP receives the data packet will be forwarded to the STA, then return to step 2;

[0136] 步骤6: STA存在时间门限!^,T2由支持多连接的无线局域网802.11协议规定,如果超过时间门限T2,当某从小区的干扰小于主小区,或吞吐量高于主小区时,则启动关联切换过程,启动关联切换过程的前提是主BSS和从BSS属于同一个扩展服务集合ESS (ExtendedService Set),关联切换过程为:当STA向待切换的从AP发出重新关联请求Reassociat1nRequest帧,从AP接收到Reassociat1n Request帧后回复Reassociat1n Response帧实现关联切换,或STA向STA在进行多关联之前隶属的小区的主AP发出解除关联Disassociat1n帧,实现关联切换。 [0136] Step 6: STA present time threshold ^, T2 by the wireless LAN 802.11 multiple connections predetermined, and if it exceeds the time threshold T2, when a smaller than the main cell from the interfering cell, or throughput higher than the main cell,! prerequisite for initiating the associated handover procedure starts the associated handover procedure is a front BSS and the BSS belonging to the same extended service set ESS (ExtendedService set), associated with the handover procedure is: when the STA resends the association from the AP to be switched request Reassociat1nRequest frame, belongs implemented before responding Reassociat1n Response frame received from the AP after the handover associated with the Reassociat1n Request frame, or associated to the STA STA performing multi-cell AP sent Disassociat1n main frame disassociation, association achieve handover.

[0137] 实施例5 [0137] Example 5

[0138] 图8是实施例5的关键步骤多关联过程图,假设网络中有3个BSS,每个BSS都有一个AP。 [0138] FIG. 8 is a key step in Example 5. FIG multi-association procedure, assuming there are three network BSS, BSS has a per AP. 本实施例中的STA隶属于主AP。 STA embodiment of the present embodiment under the primary AP. 另外两个BSS的AP分别为从APl和从AP2。 The other two were from the BSS AP and APl from AP2. 主AP所在的小区为主小区,从APl所在小区为从小区I,从AP2所在小区为从小区2。 Where the master AP cell primary cell, a cell from the cell from where APl I, from the cell from the cell 2 located AP2. 本实施例举例说明了采用多BSS关联接入的方法,使得小区边缘用户与从AP建立多关联后,在主小区和从小区同时退避,在退避到O的小区进行接入,而且下一次退避时在其他没有退避完的信道保留上一次传输数据,一个信道退避到O时其他信道剩余的退避值继续退避的方法。 This example illustrates a method of using multiple access associated BSS, such that cell edge users from the association with the AP after the establishment of multiple, simultaneously retracted from the primary cell and the cell to be retracted O access in the cell, and the next backoff when the last transmission data is retained in the other channel is not completely retracted, a back-off method when the channel to the other channel remaining O backoff value continues retreating.

[0139] 步骤1:小区边缘用户STA在进行多关联时任意选择如下两种实现方式: [0139] Step 1: the cell edge users arbitrarily selected STA during the following two implementations multiple association:

[0140]实现方式I为当小区边缘用户5了六在1'1时间内的平均干扰大于规定的干扰阈值,或者!^时间内平均吞吐量低于规定的吞吐量阈值时,所述干扰阈值和吞吐量阈值以及T1由支持多连接的无线局域网802.11协议规定,向主无线接入点AP (access point)发送多关联初始化帧MA-1NIT (Mult1-associate initializat1n),主AP接收到多关联初始化帧后,向STA返回多关联初始化同意帧MA-1NIT-ACK (Mult1-associate initial izat1nacknowledgement)或者多关联初始化不同意帧MA-1NIT_NAK (Mul t1-associateinitializat1n not acknowledgement),若STA接收到MA_INIT_ACK,STA侦听多个信道,并向STA所隶属的小区之外的其他小区的多个从AP发送多连接申请帧MA-Req (mult1-access-request) ,不论所述多个从AP的主信道是否相同,MA-Req在多个信道同时发送或者依次分别在各个信道上发送;在STA发送MA-Req帧后,根据无线局域网802.11协议,不是所有 When the [0140] I is when the six implementations average interference in the cell edge users within 1'1 5 times larger than the predetermined interference threshold, or! ^ Average throughput is below a predetermined threshold value within a certain time, the interference threshold value and throughput threshold T1 and WLAN 802.11 protocol supported by a predetermined multiple connections, wireless access point transmits to the master AP (access point) associated with the multi-frame initialization MA-1NIT (Mult1-associate initializat1n), the master AP receives multiple initialization association after the frame is returned to the STA plurality initiator association agree frame MA-1NIT-ACK (Mult1-associate initial izat1nacknowledgement) or multiple associated initialization disagree frame MA-1NIT_NAK (Mul t1-associateinitializat1n not acknowledgement), if the STA receives MA_INIT_ACK, STA investigation listen plurality of channels, and a plurality of cells other than the cell belongs STA transmits frames polylinker application MA-Req (mult1-access-request) from the AP, whether the primary channel from the plurality of the AP is the same , MA-Req transmitted in a plurality of channels are transmitted simultaneously or sequentially in the respective channels; MA-Req frame after sending in the STA, in accordance with 802.11 wireless local area network protocol, not all 从AP都会收到STA发送的MA-Req帧,从AP中收到MA-Req帧的从AP称为待选从AP,待选从AP在收到MA-Req帧后,向STA返回多连接申请同意帧MA-Req-A CK (mu lt1-access-requestacknowledgement)或者多连接申请拒绝帧MA-Req-NAK (mult1-access-request notacknowledgement);若STA收到待选从AP的MA-Req-ACK^,则向STA发送MA-Req-ACK帧的待选从AP与STA形成关联关系,S卩STA在向STA发送MA-Req-ACK帧的待选从AP上注册,向STA发送MA-Req-ACK帧的待选从AP为该STA提供服务,之后转入步骤2 ; MA-Req frame received from the AP sent by the STA will, MA-Req frame received from the AP is called the AP candidate, the candidate after receiving MA-Req frame is returned from the AP to the STA from the AP polylinker application agree frame MA-Req-a CK (mu lt1-access-requestacknowledgement) or a multi-application rejection connecting frame MA-Req-NAK (mult1-access-request notacknowledgement); if the STA received from the AP candidate MA-req- ACK ^, is sent to the STA to be selected from the MA-Req-ACK frame from the AP and associates a STA, STA S Jie registration from the AP sending MA-Req-ACK frame to be selected from the STA, the STA transmits the MA- Req-ACK frame from the AP candidate for serving STA, then proceeds to step 2;

[0141] STA若没有收到主AP的MA-1NIT-ACK或者没有收到任何一个从AP的MA-Req-ACK,则放弃多基本服务集BSS (Basic Service Set)关联流程; [0141] STA if the AP does not receive the main MA-1NIT-ACK or from the AP does not receive any of a MA-Req-ACK, give up the multiple basic service set BSS (Basic Service Set) linking process;

[0142]实现方式2为小区边缘用户51六在1'1时间内的平均干扰大于规定的干扰阈值,或者!^时间内平均吞吐量低于规定的吞吐量阈值时,所述干扰阈值和吞吐量阈值以及T1由支持多连接的无线局域网802.11协议规定,侦听多个信道并向多个从AP发送多连接申请帧MA-Req,无论主AP和从AP的主信道是否相同,MA-Req均在多个信道同时发送或者依次分别在各个信道上发送;收到STA发送的MA-Req帧的从AP选择同意帧MA-Req-ACK或拒绝帧MA-Req-NAK 多连接申请; 若STA 接收到大于等于I 个AP 返回的MA-Req-ACK, 则发送多连接申请同意帧MA_Rpt (mult1-associate-report)向主AP告知多关联结果,即告知是否成功与从AP建立关耳关,主AP 接收至丨jMA_Rp t 帧后,返回MA_Rp t ACK 帧(mult1-associate-reportacknowledgement)确认,之后转入步骤2,STA若没有收到任何一个从AP的MA-Req-ACK,则放弃多BSS关联流程; [0142] implementation, 2 cell edge users 51 1'1 six average interference over a predetermined time is greater than the interference threshold value, or! ^ Average throughput below a certain threshold value within a predetermined time, and the interference threshold throughput threshold T1 and WLAN 802.11 protocol supported by a predetermined multiple connections, and listens for a plurality of channels connecting a plurality of multi-transmission request frame MA-Req from the AP, and the AP is the same regardless of the main channel from the AP master, MA-Req are transmitted in a plurality of channels are transmitted simultaneously or sequentially in each channel; agree frame received from the AP selection MA-Req-ACK frame or reject MA-Req-NAK polylinker application MA-Req frame sent by the STA; if STA receiving than or equal to the I AP returned MA-Req-ACK, the sending multi-connection request agree frame MA_Rpt (mult1-associate-report) to inform multiple correlation result to the master AP, i.e. inform successful closed ears close establishing from the AP, after receiving the master AP to Shu jMA_Rp t frame, the frame returns MA_Rp t ACK (mult1-associate-reportacknowledgement) confirmation, then proceeds to step 2, STA if the AP does not receive from any of a MA-Req-ACK, give up the multi-BSS related processes;

[0143] 步骤2:在STA多连接流程成功之后,处于多关联状态,多关联状态存在时限X,X由支持多连接的无线局域网802.11协议规定,在多关联状态下,如果有上行数据需要发送,则执行步骤3;如果收到主AP或从AP的调度帧,则执行步骤4;从AP收到发往STA的下行数据包,则执行步骤5;如果STA需要切换主AP,则执行步骤6; [0143] Step 2: After the STA multi-connection process is successful, in a multi-associated state, there are multiple associated state time X, X specified by the wireless LAN 802.11 multiple connections, in the multi-associated state, if there is uplink data to be transmitted , step 3 is performed; if the master AP is received or the schedule frame from the AP, step 4 is performed; sent to the STA receives downlink data packet from the AP, step 5 is performed; if AP STA needs to switch the main, step 6;

[0144] 其中多关联状态的时限X有两种实现方式: [0144] wherein X multiple time associated state implemented in two ways:

[0145] 实现方式I为规定时间X,X由协议规定,边缘节点在多小区BSS (Basic ServiceSet)连接T时间后,边缘节点STA在进入多关联状态X时间之后,自动切回主小区工作,之后返回步骤I; [0145] implementations I is a predetermined time X, X by the agreement, the edge node in the multi-cell BSS (Basic ServiceSet) connected time T, the edge node STA after entering the multi-associated state X time, automatically switch back to the main cell work, after returning to step I;

[0146] 实现方式2为STA切换回主小区后,需等待一段时间D,D由无线局域网802.11协议规定,在时间D内不能传输数据,以免对其他用户造成干扰,若D = 0,表示切换回来后可立即使用信道,即退化为实现方式I,之后返回步骤I; [0146] implementations 2 after the STA switches back to the primary cell, wait a period of time D, D prescribed by the wireless LAN 802.11 protocol, data can not be transmitted within a time D, to avoid interference to other users, if D = 0, indicates handover after the back channels can be used immediately, i.e., reduced to implementations I, then returns to step I;

[0147] 步骤3: STA基于增强型分布式协调接入EDCA机制,在主小区和从小区同时执行退避过程,根据m)CA机制中的退避流程,在主小区和从小区分别初始化竞争窗cw值,然后进行退避,任何一个小区退避到ο之后,即可执行接入和传输过程,在退避计数值减到ο的小区接入,对应的接入和传输过程中,所有信道任意选择退避方式,即选择重新退避,或者选择在其他没有退避完的小区保留上一次退避计数值继续退避; [0147] Step 3: STA based on an enhanced distributed coordination access EDCA mechanism, the primary cell and the cell simultaneously perform a backoff procedure, according to m) CA backoff mechanism processes, the initialization of the main cell and from each cell the contention window cw value, and then retracted, any one cell to ο retracted after the transmission process and can perform an access, reduced ο backoff count value in the access cell, the corresponding access and transfer process, all the channels arbitrarily selected backoff mode , i.e. re-backoff selection, or choose to keep the other cell without first completely retracted retracted retracted to continue the count value;

[0148] 步骤3.1: STA在与从APl和从AP2的多关联完成后,基于EDCA机制,在主小区和从小区同时执行随机退避过程,转入步骤3.1。 [0148] Step 3.1: STA with the APl and from the associated multi-AP2 completed, based on EDCA mechanism, the primary cell and the cell simultaneously perform the random backoff procedure proceeds to step 3.1.

[0149] 步骤3.2:STA在从小区I率先完成退避,即退避到0,则在从小区I进行接入,转入步骤3.3; [0149] Step 3.2: STA from I to complete the first cell retraction, i.e. retracted to zero, the access is performed from the cell I, proceeds to step 3.3;

[0150] 步骤3.3: STA在从小区I进行接入与传输,下次接入时,所有信道任意选择退避方式,即选择重新退避,或者选择在其他没有退避完的小区保留上一次退避计数值继续退避。 [0150] Step 3.3: STA from a cell in the access and transmission I is, access to the next, all the channels arbitrarily selected backoff mode, i.e. re-backoff selected, or select another cell without completely retracted remain on a backoff count value continue to retreat. 返回步骤2; Returning to step 2;

[0151] 步骤4: STA在与多个AP关联之后,回复主AP及从AP的资源请求RR (resourcerequest)帧,收集帧并通过各个AP的TF的调度来执行基于正交频分多址接入OFDMA(Orthogonal Frequency Divis1n Multiple Access)技术的上行传输,或者通过各个AP触发触发-资源请求帧TF-RR (trigger frame-resource request)形成OFDMA随机接入,如果AP发的是TF,那么执行OFDMA;如果AP发的是TF-RR,那么执行OFDMA随机接入; [0151] Step 4: STA after a plurality of associated AP, and the AP master reply request RR (resourcerequest) resources frame from the AP, and collecting frame is performed based on an orthogonal frequency division multiple access scheduling each TF by an AP uplink transmission into OFDMA (Orthogonal Frequency Divis1n Multiple access) technology, or through the respective AP triggers - resource request frame TF-RR (trigger frame-resource request) formed OFDMA random access, if the AP is issued TF, then execution OFDMA ; If the AP is issued TF-RR, random access OFDMA is executed;

[0152] 返回步骤2; [0152] Returning to step 2;

[0153] 步骤5: STA在步骤I,步骤2与从AP多关联成功之后,如果从AP没有接收到发STA的数据包,继续侦听信道,按照802.11协议执行;如果从AP接收到发往STA的数据包,修改以太网包头域,将从AP接收到发往STA的数据包的目的地址修改为STA的MAC地址,从AP再将修改后的数据包通过有线网络送出去; [0153] Step 5: STA in step I, step 2 with the following AP plurality successful association, is not received from the AP to send the STA packet continues to listen channel, performed in accordance with the 802.11 protocol; if received from the AP sent STA packet, modifying Ethernet header field, a destination address is received from the AP STA to send data packets to modify the MAC address of the STA, send out from the wired network data packet and then modified by the AP;

[0154] 主AP接收到该数据包后,会转发给STA,之后返回步骤2; After the [0154] primary AP receives the data packet will be forwarded to the STA, then return to step 2;

[0155] 步骤6: STA存在时间门限!^,T2由支持多连接的无线局域网802.11协议规定,如果超过时间门限T2,当某从小区的干扰小于主小区,或吞吐量高于主小区时,则启动关联切换过程,启动关联切换过程的前提是主BSS和从BSS属于同一个扩展服务集合ESS (ExtendedService Set),关联切换过程为:当STA向待切换的从AP发出重新关联请求Reassociat1nRequest帧,从AP接收到Reassociat1n Request帧后回复Reassociat1n Response帧实现关联切换,或STA向STA在进行多关联之前隶属的小区的主AP发出解除关联Disassociat1n帧,实现关联切换。 [0155] Step 6: STA present time threshold ^, T2 by the wireless LAN 802.11 multiple connections predetermined, and if it exceeds the time threshold T2, when a smaller than the main cell from the interfering cell, or throughput higher than the main cell,! prerequisite for initiating the associated handover procedure starts the associated handover procedure is a front BSS and the BSS belonging to the same extended service set ESS (ExtendedService set), associated with the handover procedure is: when the STA resends the association from the AP to be switched request Reassociat1nRequest frame, belongs implemented before responding Reassociat1n Response frame received from the AP after the handover associated with the Reassociat1n Request frame, or associated to the STA STA performing multi-cell AP sent Disassociat1n main frame disassociation, association achieve handover.

[0156] 实施例6 [0156] Example 6

[0157] 图9是实施例6的关键步骤多关联过程图,假设网络中有3个BSS,每个BSS都有一个AP。 [0157] FIG. 9 is a multi-step associated with the process of FIG key Example 6, assume there are three network BSS, BSS has a per AP. 本实施例中的STA隶属于主AP。 STA embodiment of the present embodiment under the primary AP. 另外两个BSS的AP分别为从API和从AP2,从々? The other two were from the BSS AP from API and AP2, from 々? 1和从々?2都是从AP。 From 々 1 and? 2 are from the AP. 主AP所在的小区为主小区,从APl所在小区为从小区I,从AP2所在小区为从小区2。 Where the master AP cell primary cell, a cell from the cell from where APl I, from the cell from the cell 2 located AP2. 本实施例举例说明了采用多BSS关联接入的方法,使得小区边缘用户与从AP建立多关联后,在主小区和从小区同时退避,一个小区率先完成退避,但在另一个SINR最高的小区进行接入的方法。 This example illustrates a method of using multiple access associated BSS, such that cell edge users from the association with the AP after the establishment of multiple, simultaneously retracted from the primary cell and the cell, the first to complete a cell retraction, but in another cell with the highest SINR an access method.

[0158] 步骤1:小区边缘用户STA在进行多关联时任意选择如下两种实现方式: [0158] Step 1: the cell edge users arbitrarily selected STA during the following two implementations multiple association:

[0159]实现方式I为当小区边缘用户51六在1'1时间内的平均干扰大于规定的干扰阈值,或者!^时间内平均吞吐量低于规定的吞吐量阈值时,所述干扰阈值和吞吐量阈值以及T1由支持多连接的无线局域网802.11协议规定,向主无线接入点AP (access point)发送多关联初始化帧MA-1NIT (Mult1-associate initializat1n),主AP接收到多关联初始化帧后,向STA返回多关联初始化同意帧MA-1NIT-ACK (Mult1-associate initial izat1nacknowledgement)或者多关联初始化不同意帧MA-1NIT_NAK (Mul t1-associateinitializat1n not acknowledgement),若STA接收到MA_INIT_ACK,STA侦听多个信道,并向STA所隶属的小区之外的其他小区的多个从AP发送多连接申请帧MA-Req (mult1-access-request) ,不论所述多个从AP的主信道是否相同,MA-Req在多个信道同时发送或者依次分别在各个信道上发送;在STA发送MA-Req帧后,根据无线局域网802.11协议,不是所有 When the [0159] implementation of I is greater than that when the cell edge users in the six average interference 51 1'1 predetermined interference threshold time value, or! ^ Mean throughput below a certain threshold value within a predetermined time, the interference threshold value and and a wireless LAN throughput threshold T1 802.11 protocol supported by a predetermined multiple connections, the main access point AP (access point) to send multiple frames associated initialization MA-1NIT (Mult1-associate initializat1n), the master AP receives multi-frame initialization association after return to the STA associated multi-frame initialization agree MA-1NIT-ACK (Mult1-associate initial izat1nacknowledgement) or multiple frames associated initialization disagree MA-1NIT_NAK (Mul t1-associateinitializat1n not acknowledgement), if the STA receives MA_INIT_ACK, STA listens a plurality of channels, and transmits a plurality of cells other than the cell belongs STA from the AP connection request multiple frames MA-Req (mult1-access-request), is the same irrespective of the plurality of primary channel from the AP, MA-Req transmitted in a plurality of channels are transmitted simultaneously or sequentially in the respective channels; after STA sends MA-Req frame, according to the 802.11 wireless LAN protocol, not all AP都会收到STA发送的MA-Req帧,从AP中收到MA-Req帧的从AP称为待选从AP,待选从AP在收到MA-Req帧后,向STA返回多连接申请同意帧MA-Req-A CK (mu lt1-access-requestacknowledgement)或者多连接申请拒绝帧MA-Req-NAK (mult1-access-request notacknowledgement);若STA收到待选从AP的MA-Req-ACK^,则向STA发送MA-Req-ACK帧的待选从AP与STA形成关联关系,S卩STA在向STA发送MA-Req-ACK帧的待选从AP上注册,向STA发送MA-Req-ACK帧的待选从AP为该STA提供服务,之后转入步骤2 ; MA-Req AP receives a frame sent by the STA received from the AP MA-Req frame from the AP is called the AP candidate, the candidate after receiving MA-Req frame, return to the multi-connection request from the AP STA agreed frame MA-Req-a CK (mu lt1-access-requestacknowledgement) or a multi-application rejection connecting frame MA-Req-NAK (mult1-access-request notacknowledgement); if the STA received from the AP candidate MA-Req-ACK ^, the transmission candidate MA-Req-ACK frame to the STA associates a from the AP and the STA, S Jie STA registration from the AP sending MA-Req-ACK frame to the STA to be selected, transmission MA-Req to the STA -ACK frame to be selected from a serving AP for the STA, then proceeds to step 2;

[0160] STA若没有收到主AP的MA-1NIT-ACK或者没有收到任何一个从AP的MA-Req-ACK,则放弃多基本服务集BSS (Basic Service Set)关联流程; [0160] STA if the AP does not receive the main MA-1NIT-ACK or from the AP does not receive any of a MA-Req-ACK, give up the multiple basic service set BSS (Basic Service Set) linking process;

[0161]实现方式2为小区边缘用户314在1'1时间内的平均干扰大于规定的干扰阈值,或者!^时间内平均吞吐量低于规定的吞吐量阈值时,所述干扰阈值和吞吐量阈值以及T1由支持多连接的无线局域网802.11协议规定,侦听多个信道并向多个从AP发送多连接申请帧MA-Req,无论主AP和从AP的主信道是否相同,MA-Req均在多个信道同时发送或者依次分别在各个信道上发送;收到STA发送的MA-Req帧的从AP选择同意帧MA-Req-ACK或拒绝帧MA-Req-NAK 多连接申请; 若STA 接收到大于等于I 个AP 返回的MA-Req-ACK, 则发送多连接申请同意帧MA_Rpt (mult1-associate-report)向主AP告知多关联结果,即告知是否成功与从AP建立关耳关,主AP 接收至丨jMA_Rp t 帧后,返回MA_Rp t ACK 帧(mult1-associate-reportacknowledgement)确认,之后转入步骤2,STA若没有收到任何一个从AP的MA-Req-ACK,则放弃多BSS关联流程; [0161] implementation, 2 cell edge users 314 1'1 average interference over a predetermined time is greater than the interference threshold value, or! ^ When the average throughput within a time less than a certain predetermined threshold value, the interference threshold value and a certain threshold T1 and 802.11 wireless local area network supported by a predetermined multiple connections, and listens for a plurality of channels connecting a plurality of multi-transmission request frame MA-Req from the AP, and the AP is the same regardless of the main channel from the AP master, both MA-Req transmitting a plurality of channels are transmitted simultaneously or sequentially in the respective channels; selection received from the AP STA MA-Req frame is transmitted agree MA-Req-ACK frame or a reject frame MA-Req-NAK polylinker application; if receiving STA greater than equal to the I AP returned MA-Req-ACK, the sending multi-connection request agree frame MA_Rpt (mult1-associate-report) to inform multiple correlation result to the master AP, i.e. inform successful establishing from the AP off the ear closed, the main after receiving the AP to Shu jMA_Rp t frame, the frame returns MA_Rp t ACK (mult1-associate-reportacknowledgement) confirmation, then proceeds to step 2, STA if the AP does not receive from any of a MA-Req-ACK, give up the associated multi-BSS Process;

[0162] 步骤2:在STA多连接流程成功之后,处于多关联状态,多关联状态存在时限X,X由支持多连接的无线局域网802.11协议规定,在多关联状态下,如果有上行数据需要发送,则执行步骤3;如果收到主AP或从AP的调度帧,则执行步骤4;从AP收到发往STA的下行数据包,则执行步骤5;如果STA需要切换主AP,则执行步骤6; [0162] Step 2: After the STA multi-connection process is successful, in a multi-associated state, there are multiple associated state time X, X specified by the wireless LAN 802.11 multiple connections, in the multi-associated state, if there is uplink data to be transmitted , step 3 is performed; if the master AP is received or the schedule frame from the AP, step 4 is performed; sent to the STA receives downlink data packet from the AP, step 5 is performed; if AP STA needs to switch the main, step 6;

[0163] 其中多关联状态的时限X有两种实现方式: [0163] wherein X multiple time associated state implemented in two ways:

[0164] 实现方式I为规定时间X,X由协议规定,边缘节点在多小区BSS (Basic ServiceSet)连接T时间后,边缘节点STA在进入多关联状态X时间之后,自动切回主小区工作,之后返回步骤I; [0164] implementations I is a predetermined time X, X by the agreement, the edge node in the multi-cell BSS (Basic ServiceSet) connected time T, the edge node STA after entering the multi-associated state X time, automatically switch back to the main cell work, after returning to step I;

[0165] 实现方式2为STA切换回主小区后,需等待一段时间D,D由无线局域网802.11协议规定,在时间D内不能传输数据,以免对其他用户造成干扰,若D = 0,表示切换回来后可立即使用信道,即退化为实现方式I,之后返回步骤I; [0165] implementations 2 after the STA switches back to the primary cell, wait a period of time D, D prescribed by the wireless LAN 802.11 protocol, data can not be transmitted within a time D, to avoid interference to other users, if D = 0, indicates handover after the back channels can be used immediately, i.e., reduced to implementations I, then returns to step I;

[0166] 步骤3: STA基于EDCA机制,在主小区和从小区同时执行随机退避过程,根据EDCA机制中的退避流程,在主小区和从小区分别初始化竞争窗CW值,然后进行退避,任何一个小区退避到O之后,在另一个平均SINR值最高的小区进行接入。 [0166] Step 3: STA based on the EDCA mechanism, the primary cell and performing a random backoff simultaneously from cell process according to EDCA mechanisms retraction process, the primary cell and the initialization of the cell, respectively contention window CW value, and then retracted, any after cell retracted to O, an access another cell in the highest average SINR value.

[0167] 步骤3.1: STA在与从APl和从AP2的多关联完成后,基于EDCA机制,在主小区和从小区同时执行随机退避过程。 [0167] Step 3.1: STA with the APl and from the associated multi-AP2 completed, based on EDCA mechanism, the primary cell and the secondary cell while performing the random backoff procedure.

[0168] 步骤3.2:STA在从小区2率先完成退避,即退避到O; [0168] Step 3.2: STA 2 to complete the first cell in the retracted, i.e. retracted to O;

[0169] 步骤3.3:STA在平均SINR值最高的小区(从小区I)进行接入与传输,之后返回步骤2; [0169] Step 3.3: STA performing access with the highest transmission cell (cell from I) an average SINR value, then returns to step 2;

[0170] 步骤4: STA在与多个AP关联之后,回复主AP及从AP的资源请求RR (resourcerequest)帧,收集帧并通过各个AP的TF的调度来执行基于正交频分多址接入OFDMA(Orthogonal Frequency Divis1n Multiple Access)技术的上行传输,或者通过各个AP触发触发-资源请求帧TF-RR (trigger frame-resource request)形成OFDMA随机接入,如果AP发的是TF,那么执行OFDMA;如果AP发的是TF-RR,那么执行OFDMA随机接入; [0170] Step 4: STA after a plurality of associated AP, and the AP master reply request RR (resourcerequest) resources frame from the AP, and collecting frame is performed based on an orthogonal frequency division multiple access scheduling each TF by an AP uplink transmission into OFDMA (Orthogonal Frequency Divis1n Multiple access) technology, or through the respective AP triggers - resource request frame TF-RR (trigger frame-resource request) formed OFDMA random access, if the AP is issued TF, then execution OFDMA ; If the AP is issued TF-RR, random access OFDMA is executed;

[0171] 返回步骤2; [0171] Returning to step 2;

[0172] 步骤5: STA在步骤I,步骤2与从AP多关联成功之后,如果从AP没有接收到发STA的数据包,继续侦听信道,按照802.11协议执行;如果从AP接收到发往STA的数据包,修改以太网包头域,将从AP接收到发往STA的数据包的目的地址修改为STA的MAC地址,从AP再将修改后的数据包通过有线网络送出去; [0172] Step 5: STA in step I, step 2 with the following AP plurality successful association, is not received from the AP to send the STA packet continues to listen channel, performed in accordance with the 802.11 protocol; if received from the AP sent STA packet, modifying Ethernet header field, a destination address is received from the AP STA to send data packets to modify the MAC address of the STA, send out from the wired network data packet and then modified by the AP;

[0173] 主AP接收到该数据包后,会转发给STA,之后返回步骤2; After the [0173] primary AP receives the data packet will be forwarded to the STA, then return to step 2;

[0174] 步骤6: STA存在时间门限!^,T2由支持多连接的无线局域网802.11协议规定,如果超过时间门限T2,当某从小区的干扰小于主小区,或吞吐量高于主小区时,则启动关联切换过程,启动关联切换过程的前提是主BSS和从BSS属于同一个扩展服务集合ESS (ExtendedService Set),关联切换过程为:当STA向待切换的从AP发出重新关联请求Reassociat1nRequest帧,从AP接收到Reassociat1n Request帧后回复Reassociat1n Response帧实现关联切换,或STA向STA在进行多关联之前隶属的小区的主AP发出解除关联Disassociat1n帧,实现关联切换。 [0174] Step 6: STA present time threshold ^, T2 by the wireless LAN 802.11 multiple connections predetermined, and if it exceeds the time threshold T2, when a smaller than the main cell from the interfering cell, or throughput higher than the main cell,! prerequisite for initiating the associated handover procedure starts the associated handover procedure is a front BSS and the BSS belonging to the same extended service set ESS (ExtendedService set), associated with the handover procedure is: when the STA resends the association from the AP to be switched request Reassociat1nRequest frame, belongs implemented before responding Reassociat1n Response frame received from the AP after the handover associated with the Reassociat1n Request frame, or associated to the STA STA performing multi-cell AP sent Disassociat1n main frame disassociation, association achieve handover.

[0175] 实施例7 [0175] Example 7

[0176]图10是实施例7的场景示意图,图11是实施例7的关键步骤多关联过程图,假设网络中有4个BSS,本实施例中的STA隶属于主AP ο主AP所在的小区为主小区,从APl所在小区为从小区I,从AP2所在小区为从小区2,从AP3所在小区为从小区3,从小区2从小区3共享一个信道。 [0176] FIG. 10 is a schematic diagram of a scene in Example 7, FIG. 11 is a critical step in Example 7 FIG plurality association process embodiment, the network is assumed that there are four the BSS, the STA belonging to the main embodiment o AP master AP of the present embodiment is located cell primary cell, where the cell is from a cell APl I, from cells from a cell where two AP2, AP3 from the cell from where the cell 3, from the cell 2 cell 3 from a shared channel. 本实施例举例说明了采用多BSS关联接入的方法,使得小区边缘用户进入多关联状态后,在协议规定的时限T内上行传输数据时,先后向不同信道的从AP传输数据的方法。 After the present embodiment illustrates a method of using multiple access associated BSS, such that cell edge users into a multi-associated state, the uplink data transmission protocol within a predetermined time T, has a different channel from the AP data transmission method.

[0177] 步骤1:小区边缘用户STA在进行多关联时任意选择如下两种实现方式: [0177] Step 1: the cell edge users arbitrarily selected STA during the following two implementations multiple association:

[0178]实现方式I为当小区边缘用户5了六在1'1时间内的平均干扰大于规定的干扰阈值,或者!^时间内平均吞吐量低于规定的吞吐量阈值时,所述干扰阈值和吞吐量阈值以及T1由支持多连接的无线局域网802.11协议规定,向主无线接入点AP (access point)发送多关联初始化帧MA-1NIT (Mult1-associate initializat1n),主AP接收到多关联初始化帧后,向STA返回多关联初始化同意帧MA-1NIT-ACK (Mult1-associate initial izat1nacknowledgement)或者多关联初始化不同意帧MA-1NIT_NAK (Mul t1-associateinitializat1n not acknowledgement),若STA接收到MA_INIT_ACK,STA侦听多个信道,并向STA所隶属的小区之外的其他小区的多个从AP发送多连接申请帧MA-Req (mult1-access-request) ,不论所述多个从AP的主信道是否相同,MA-Req在多个信道同时发送或者依次分别在各个信道上发送;在STA发送MA-Req帧后,根据无线局域网802.11协议,不是所有 When the [0178] I is when the six implementations average interference in the cell edge users within 1'1 5 times larger than the predetermined interference threshold, or! ^ Average throughput is below a predetermined threshold value within a certain time, the interference threshold value and throughput threshold T1 and WLAN 802.11 protocol supported by a predetermined multiple connections, wireless access point transmits to the master AP (access point) associated with the multi-frame initialization MA-1NIT (Mult1-associate initializat1n), the master AP receives multiple initialization association after the frame is returned to the STA plurality initiator association agree frame MA-1NIT-ACK (Mult1-associate initial izat1nacknowledgement) or multiple associated initialization disagree frame MA-1NIT_NAK (Mul t1-associateinitializat1n not acknowledgement), if the STA receives MA_INIT_ACK, STA investigation listen plurality of channels, and a plurality of cells other than the cell belongs STA transmits frames polylinker application MA-Req (mult1-access-request) from the AP, whether the primary channel from the plurality of the AP is the same , MA-Req transmitted in a plurality of channels are transmitted simultaneously or sequentially in the respective channels; MA-Req frame after sending in the STA, in accordance with 802.11 wireless local area network protocol, not all 从AP都会收到STA发送的MA-Req帧,从AP中收到MA-Req帧的从AP称为待选从AP,待选从AP在收到MA-Req帧后,向STA返回多连接申请同意帧MA-Req-A CK (mu lt1-access-requestacknowledgement)或者多连接申请拒绝帧MA-Req-NAK (mult1-access-request notacknowledgement);若STA收到待选从AP的MA-Req-ACK^,则向STA发送MA-Req-ACK帧的待选从AP与STA形成关联关系,S卩STA在向STA发送MA-Req-ACK帧的待选从AP上注册,向STA发送MA-Req-ACK帧的待选从AP为该STA提供服务,之后转入步骤2 ; MA-Req frame received from the AP sent by the STA will, MA-Req frame received from the AP is called the AP candidate, the candidate after receiving MA-Req frame is returned from the AP to the STA from the AP polylinker application agree frame MA-Req-a CK (mu lt1-access-requestacknowledgement) or a multi-application rejection connecting frame MA-Req-NAK (mult1-access-request notacknowledgement); if the STA received from the AP candidate MA-req- ACK ^, is sent to the STA to be selected from the MA-Req-ACK frame from the AP and associates a STA, STA S Jie registration from the AP sending MA-Req-ACK frame to be selected from the STA, the STA transmits the MA- Req-ACK frame from the AP candidate for serving STA, then proceeds to step 2;

[0179] STA若没有收到主AP的MA-1NIT-ACK或者没有收到任何一个从AP的MA-Req-ACK,则放弃多基本服务集BSS (Basic Service Set)关联流程; [0179] STA if the AP does not receive the main MA-1NIT-ACK or from the AP does not receive any of a MA-Req-ACK, give up the multiple basic service set BSS (Basic Service Set) linking process;

[0180]实现方式2为小区边缘用户51六在1'1时间内的平均干扰大于规定的干扰阈值,或者!^时间内平均吞吐量低于规定的吞吐量阈值时,所述干扰阈值和吞吐量阈值以及T1由支持多连接的无线局域网802.11协议规定,侦听多个信道并向多个从AP发送多连接申请帧MA-Req,无论主AP和从AP的主信道是否相同,MA-Req均在多个信道同时发送或者依次分别在各个信道上发送;收到STA发送的MA-Req帧的从AP选择同意帧MA-Req-ACK或拒绝帧MA-Req-NAK 多连接申请; 若STA 接收到大于等于I 个AP 返回的MA-Req-ACK, 则发送多连接申请同意帧MA_Rpt (mult1-associate-report)向主AP告知多关联结果,即告知是否成功与从AP建立关耳关,主AP 接收至丨jMA_Rp t 帧后,返回MA_Rp t ACK 帧(mult1-associate-reportacknowledgement)确认,之后转入步骤2,STA若没有收到任何一个从AP的MA-Req-ACK,则放弃多BSS关联流程; [0180] implementation, 2 cell edge users 51 1'1 six average interference over a predetermined time is greater than the interference threshold value, or! ^ Average throughput below a certain threshold value within a predetermined time, and the interference threshold throughput threshold T1 and WLAN 802.11 protocol supported by a predetermined multiple connections, and listens for a plurality of channels connecting a plurality of multi-transmission request frame MA-Req from the AP, and the AP is the same regardless of the main channel from the AP master, MA-Req are transmitted in a plurality of channels are transmitted simultaneously or sequentially in each channel; agree frame received from the AP selection MA-Req-ACK frame or reject MA-Req-NAK polylinker application MA-Req frame sent by the STA; if STA receiving than or equal to the I AP returned MA-Req-ACK, the sending multi-connection request agree frame MA_Rpt (mult1-associate-report) to inform multiple correlation result to the master AP, i.e. inform successful closed ears close establishing from the AP, after receiving the master AP to Shu jMA_Rp t frame, the frame returns MA_Rp t ACK (mult1-associate-reportacknowledgement) confirmation, then proceeds to step 2, STA if the AP does not receive from any of a MA-Req-ACK, give up the multi-BSS related processes;

[0181] 步骤2:在STA多连接流程成功之后,处于多关联状态,多关联状态存在时限X,X由支持多连接的无线局域网802.11协议规定,在多关联状态下,如果有上行数据需要发送,则执行步骤3;如果收到主AP或从AP的调度帧,则执行步骤4;从AP收到发往STA的下行数据包,则执行步骤5;如果STA需要切换主AP,则执行步骤6; [0181] Step 2: After the STA multi-connection process is successful, in a multi-associated state, there are multiple associated state time X, X specified by the wireless LAN 802.11 multiple connections, in the multi-associated state, if there is uplink data to be transmitted , step 3 is performed; if the master AP is received or the schedule frame from the AP, step 4 is performed; sent to the STA receives downlink data packet from the AP, step 5 is performed; if AP STA needs to switch the main, step 6;

[0182] 其中多关联状态的时限X有两种实现方式: [0182] wherein X multiple time associated state implemented in two ways:

[0183] 实现方式I为规定时间X,X由协议规定,边缘节点在多小区BSS (Basic ServiceSet)连接T时间后,边缘节点STA在进入多关联状态X时间之后,自动切回主小区工作,之后返回步骤I; [0183] implementations I is a predetermined time X, X by the agreement, the edge node in the multi-cell BSS (Basic ServiceSet) connected time T, the edge node STA after entering the multi-associated state X time, automatically switch back to the main cell work, after returning to step I;

[0184] 实现方式2为STA切换回主小区后,需等待一段时间D,D由无线局域网802.11协议规定,在时间D内不能传输数据,以免对其他用户造成干扰,若D = 0,表示切换回来后可立即使用信道,即退化为实现方式I,之后返回步骤I; [0184] implementations 2 after the STA switches back to the primary cell, wait a period of time D, D prescribed by the wireless LAN 802.11 protocol, data can not be transmitted within a time D, to avoid interference to other users, if D = 0, indicates handover after the back channels can be used immediately, i.e., reduced to implementations I, then returns to step I;

[0185] 步骤2.1:在时间T内,STA先与从APl进行数据的接入与传输,再与在共享同一信道的从AP2和从AP3进行数据传输,在时间T过后,切换回主小区; [0185] Step 2.1: in the time T, the the STA to the access and transmission of data from the APl, then with shared the same channel from AP2, and data transmission from the AP3, after time T, the switch back to the primary cell;

[0186] 步骤2.2:切换回主小区后,等待一段时间D,D由无线局域网802.11协议规定,在时间D内不能传输数据,以免对其他用户造成干扰,时间D过后,若D = 0,表示切换回来后可立即使用信道,即退化为实现方式I,之后返回步骤I; [0186] Step 2.2: switching back to the primary cell, wait for a period of time D, D prescribed by the wireless LAN 802.11 protocol, data can not be transmitted within a time D, to avoid interference to other users, after the time D, if D = 0, indicates can be used immediately after switching back to the channel, i.e., reduced to implementations I, then returns to step I;

[0187] 步骤3: STA基于增强型分布式协调接入EDCA (Enhanced Distributed ChannelAccess)机制,在主小区和从小区同时执行退避过程,根据EDCA机制中的退避流程,在主小区和从小区分别初始化竞争窗CW值,然后进行退避,任何一个小区退避到O之后,在当前信号与干扰加噪声比SINR最高的小区或平均SINR最高的小区执行接入和传输过程。 [0187] Step 3: STA Coordination Access EDCA (Enhanced Distributed ChannelAccess) mechanism based on an enhanced distributed, while performing a backoff process from primary cell and the cell, according to the mechanism of EDCA backoff process are initialized from the primary cell and the cell contention window CW value, and then retracted, any one cell to O retracted after the highest access and perform cell transfer process in the current highest signal to interference plus noise ratio SINR cell or average SINR.

[0188] 步骤3.1: STA在与从APl、从AP2和从AP3的多关联完成后,基于EDCA机制,在主小区和从小区同时执行随机退避过程。 [0188] Step 3.1: STA with the APl, random backoff AP2, and AP3 from the associated plurality of completed based on EDCA mechanism, while performing primary cell and a cell from the process.

[0189] 步骤3.2: STA完成退避后,向从APl接入并上行传输数据; [0189] Step 3.2: After completion retracted STA, the access to the APl data and uplink transmission;

[0190] 步骤3.3:从小区2和从小区3共享同一个信道,STA与从APl传输数据完成后,重新退避,退避完成后,在当前信号与干扰加噪声比SINR最高的小区或平均SINR最高的小区执行接入和传输过程;返回步骤2。 [0190] Step 3.3: from cell 2 and the cell 3 share the same channel, the STA and from the APl data transmission is completed, re-retracted, the retraction is completed, the current signal to interference plus noise ratio SINR cell with the highest or average maximum SINR cells and performing access transmission; return to step 2.

[0191] 步骤4: STA在与多个AP关联之后,回复主AP及从AP的资源请求RR (resourcerequest)帧,收集帧并通过各个AP的TF的调度来执行基于正交频分多址接入OFDMA(Orthogonal Frequency Divis1n Multiple Access)技术的上行传输,或者通过各个AP触发触发-资源请求帧TF-RR (trigger frame-resource request)形成OFDMA随机接入,如果AP发的是TF,那么执行OFDMA;如果AP发的是TF-RR,那么执行OFDMA随机接入; [0191] Step 4: STA after a plurality of associated AP, and the AP master reply request RR (resourcerequest) resources frame from the AP, and collecting frame is performed based on an orthogonal frequency division multiple access scheduling each TF by an AP uplink transmission into OFDMA (Orthogonal Frequency Divis1n Multiple access) technology, or through the respective AP triggers - resource request frame TF-RR (trigger frame-resource request) formed OFDMA random access, if the AP is issued TF, then execution OFDMA ; If the AP is issued TF-RR, random access OFDMA is executed;

[0192] 返回步骤2; [0192] Returning to step 2;

[0193] 步骤5: STA在步骤I,步骤2与从AP多关联成功之后,如果从AP没有接收到发STA的数据包,继续侦听信道,按照802.11协议执行;如果从AP接收到发往STA的数据包,修改以太网包头域,将从AP接收到发往STA的数据包的目的地址修改为STA的MAC地址,从AP再将修改后的数据包通过有线网络送出去; [0193] Step 5: STA in step I, step 2 with the following AP plurality successful association, is not received from the AP to send the STA packet continues to listen channel, performed in accordance with the 802.11 protocol; if received from the AP sent STA packet, modifying Ethernet header field, a destination address is received from the AP STA to send data packets to modify the MAC address of the STA, send out from the wired network data packet and then modified by the AP;

[0194] 主AP接收到该数据包后,会转发给STA,之后返回步骤2; After the [0194] primary AP receives the data packet will be forwarded to the STA, then return to step 2;

[0195] 步骤6: STA存在时间门限!^,T2由支持多连接的无线局域网802.11协议规定,如果超过时间门限T2,当某从小区的干扰小于主小区,或吞吐量高于主小区时,则启动关联切换过程,启动关联切换过程的前提是主BSS和从BSS属于同一个扩展服务集合ESS (ExtendedService Set),关联切换过程为:当STA向待切换的从AP发出重新关联请求Reassociat1nRequest帧,从AP接收到Reassociat1n Request帧后回复Reassociat1n Response帧实现关联切换,或STA向STA在进行多关联之前隶属的小区的主AP发出解除关联Disassociat1n帧,实现关联切换。 [0195] Step 6: STA present time threshold ^, T2 by the wireless LAN 802.11 multiple connections predetermined, and if it exceeds the time threshold T2, when a smaller than the main cell from the interfering cell, or throughput higher than the main cell,! prerequisite for initiating the associated handover procedure starts the associated handover procedure is a front BSS and the BSS belonging to the same extended service set ESS (ExtendedService set), associated with the handover procedure is: when the STA resends the association from the AP to be switched request Reassociat1nRequest frame, belongs implemented before responding Reassociat1n Response frame received from the AP after the handover associated with the Reassociat1n Request frame, or associated to the STA STA performing multi-cell AP sent Disassociat1n main frame disassociation, association achieve handover.

[0196] 实施例8 [0196] Example 8

[0197]图12是实施例8的场景示意图,图13是实施例8的关键步骤多关联过程图。 [0197] FIG. 12 is a schematic diagram of a scene in Example 8, FIG. 13 is a multi-step associated with the process of FIG key Example 8. 假设网络中有3个BSS,每个BSS都有一个AP。 Suppose there are three network BSS, BSS has a per AP. 本实施例中的STA隶属于主AP。 STA embodiment of the present embodiment under the primary AP. 另外两个BSS的AP分别为从APl和从AP2,从APl和从AP2不工作在同一信道。 The other two were from the BSS AP and APl from AP2, AP2 from APl and do not work in the same channel. 本实施例举例说明了采用多BSS关联接入的方法,使得小区边缘用户进入多关联状态后,在协议规定的时限T内上行传输数据时,同时向不同信道的从AP传输数据的方法。 After the present embodiment illustrates a method of using multiple access associated BSS, such that cell edge users into a multi-associated state, the uplink data transmission protocol within a predetermined time T, while the method of the different channels of data transmitted from the AP.

[0198] 步骤1:小区边缘用户STA在进行多关联时任意选择如下两种实现方式: [0198] Step 1: the cell edge users arbitrarily selected STA during the following two implementations multiple association:

[0199]实现方式I为当小区边缘用户51六在1'1时间内的平均干扰大于规定的干扰阈值,或者!^时间内平均吞吐量低于规定的吞吐量阈值时,所述干扰阈值和吞吐量阈值以及T1由支持多连接的无线局域网802.11协议规定,向主无线接入点AP (access point)发送多关联初始化帧MA-1NIT (Mult1-associate initializat1n),主AP接收到多关联初始化帧后,向STA返回多关联初始化同意帧MA-1NIT-ACK (Mult1-associate initial izat1nacknowledgement)或者多关联初始化不同意帧MA-1NIT_NAK (Mul t1-associateinitializat1n not acknowledgement),若STA接收到MA_INIT_ACK,STA侦听多个信道,并向STA所隶属的小区之外的其他小区的多个从AP发送多连接申请帧MA-Req (mult1-access-request) ,不论所述多个从AP的主信道是否相同,MA-Req在多个信道同时发送或者依次分别在各个信道上发送;在STA发送MA-Req帧后,根据无线局域网802.11协议,不是所有 When the [0199] implementation of I is greater than that when the cell edge users in the six average interference 51 1'1 predetermined interference threshold time value, or! ^ Mean throughput below a certain threshold value within a predetermined time, the interference threshold value and and a wireless LAN throughput threshold T1 802.11 protocol supported by a predetermined multiple connections, the main access point AP (access point) to send multiple frames associated initialization MA-1NIT (Mult1-associate initializat1n), the master AP receives multi-frame initialization association after return to the STA associated multi-frame initialization agree MA-1NIT-ACK (Mult1-associate initial izat1nacknowledgement) or multiple frames associated initialization disagree MA-1NIT_NAK (Mul t1-associateinitializat1n not acknowledgement), if the STA receives MA_INIT_ACK, STA listens a plurality of channels, and transmits a plurality of cells other than the cell belongs STA from the AP connection request multiple frames MA-Req (mult1-access-request), is the same irrespective of the plurality of primary channel from the AP, MA-Req transmitted in a plurality of channels are transmitted simultaneously or sequentially in the respective channels; after STA sends MA-Req frame, according to the 802.11 wireless LAN protocol, not all AP都会收到STA发送的MA-Req帧,从AP中收到MA-Req帧的从AP称为待选从AP,待选从AP在收到MA-Req帧后,向STA返回多连接申请同意帧MA-Req-A CK (mu lt1-access-requestacknowledgement)或者多连接申请拒绝帧MA-Req-NAK (mult1-access-request notacknowledgement);若STA收到待选从AP的MA-Req-ACK^,则向STA发送MA-Req-ACK帧的待选从AP与STA形成关联关系,S卩STA在向STA发送MA-Req-ACK帧的待选从AP上注册,向STA发送MA-Req-ACK帧的待选从AP为该STA提供服务,之后转入步骤2 ; MA-Req AP receives a frame sent by the STA received from the AP MA-Req frame from the AP is called the AP candidate, the candidate after receiving MA-Req frame, return to the multi-connection request from the AP STA agreed frame MA-Req-a CK (mu lt1-access-requestacknowledgement) or a multi-application rejection connecting frame MA-Req-NAK (mult1-access-request notacknowledgement); if the STA received from the AP candidate MA-Req-ACK ^, the transmission candidate MA-Req-ACK frame to the STA associates a from the AP and the STA, S Jie STA registration from the AP sending MA-Req-ACK frame to the STA to be selected, transmission MA-Req to the STA -ACK frame to be selected from a serving AP for the STA, then proceeds to step 2;

[0200] STA若没有收到主AP的MA-1NIT-ACK或者没有收到任何一个从AP的MA-Req-ACK,则放弃多基本服务集BSS (Basic Service Set)关联流程; [0200] STA if the AP does not receive the main MA-1NIT-ACK or from the AP does not receive any of a MA-Req-ACK, give up the multiple basic service set BSS (Basic Service Set) linking process;

[0201]实现方式2为小区边缘用户314在1'1时间内的平均干扰大于规定的干扰阈值,或者!^时间内平均吞吐量低于规定的吞吐量阈值时,所述干扰阈值和吞吐量阈值以及T1由支持多连接的无线局域网802.11协议规定,侦听多个信道并向多个从AP发送多连接申请帧MA-Req,无论主AP和从AP的主信道是否相同,MA-Req均在多个信道同时发送或者依次分别在各个信道上发送;收到STA发送的MA-Req帧的从AP选择同意帧MA-Req-ACK或拒绝帧MA-Req-NAK 多连接申请; 若STA 接收到大于等于I 个AP 返回的MA-Req-ACK, 则发送多连接申请同意帧MA_Rpt (mult1-associate-report)向主AP告知多关联结果,即告知是否成功与从AP建立关耳关,主AP 接收至丨jMA_Rp t 帧后,返回MA_Rp t ACK 帧(mult1-associate-reportacknowledgement)确认,之后转入步骤2,STA若没有收到任何一个从AP的MA-Req-ACK,则放弃多BSS关联流程; [0201] implementation, 2 cell edge users 314 1'1 average interference over a predetermined time is greater than the interference threshold value, or! ^ When the average throughput within a time less than a certain predetermined threshold value, the interference threshold value and a certain threshold T1 and 802.11 wireless local area network supported by a predetermined multiple connections, and listens for a plurality of channels connecting a plurality of multi-transmission request frame MA-Req from the AP, and the AP is the same regardless of the main channel from the AP master, both MA-Req transmitting a plurality of channels are transmitted simultaneously or sequentially in the respective channels; selection received from the AP STA MA-Req frame is transmitted agree MA-Req-ACK frame or a reject frame MA-Req-NAK polylinker application; if receiving STA greater than equal to the I AP returned MA-Req-ACK, the sending multi-connection request agree frame MA_Rpt (mult1-associate-report) to inform multiple correlation result to the master AP, i.e. inform successful establishing from the AP off the ear closed, the main after receiving the AP to Shu jMA_Rp t frame, the frame returns MA_Rp t ACK (mult1-associate-reportacknowledgement) confirmation, then proceeds to step 2, STA if the AP does not receive from any of a MA-Req-ACK, give up the associated multi-BSS Process;

[0202] 步骤2:在STA多连接流程成功之后,处于多关联状态,多关联状态存在时限X,X由支持多连接的无线局域网802.11协议规定,在多关联状态下,如果有上行数据需要发送,则执行步骤3;如果收到主AP或从AP的调度帧,则执行步骤4;从AP收到发往STA的下行数据包,则执行步骤5;如果STA需要切换主AP,则执行步骤6; [0202] Step 2: After the STA multi-connection process is successful, in a multi-associated state, there are multiple associated state time X, X a wireless LAN 802.11 multi-connection requirements, a multi-associated state, if there is uplink data to be transmitted , step 3 is performed; if the master AP is received or the schedule frame from the AP, step 4 is performed; sent to the STA receives downlink data packet from the AP, step 5 is performed; if AP STA needs to switch the main, step 6;

[0203] 其中多关联状态的时限X有两种实现方式: [0203] wherein X multiple time associated state implemented in two ways:

[0204] 实现方式I为规定时间X,X由协议规定,边缘节点在多小区BSS (Basic ServiceSet)连接T时间后,边缘节点STA在进入多关联状态X时间之后,自动切回主小区工作,之后返回步骤I; [0204] implementations I is a predetermined time X, X by the agreement, the edge node in the multi-cell BSS (Basic ServiceSet) connected time T, the edge node STA after entering the multi-associated state X time, automatically switch back to the main cell work, after returning to step I;

[0205] 实现方式2为STA切换回主小区后,需等待一段时间D,D由无线局域网802.11协议规定,在时间D内不能传输数据,以免对其他用户造成干扰,若D = 0,表示切换回来后可立即使用信道,即退化为实现方式I,之后返回步骤I; [0205] implementations 2 after the STA switches back to the primary cell, wait a period of time D, D prescribed by the wireless LAN 802.11 protocol, data can not be transmitted within a time D, to avoid interference to other users, if D = 0, indicates handover after the back channels can be used immediately, i.e., reduced to implementations I, then returns to step I;

[0206] 步骤2.1:在时间T内,STA先与从APl进行数据的接入与传输,再与在共享同一信道的从AP2和从AP3进行数据传输,在时间T过后,切换回主小区; [0206] Step 2.1: in the time T, the the STA to the access and transmission of data from the APl, then with shared the same channel from AP2, and data transmission from the AP3, after time T, the switch back to the primary cell;

[0207] 步骤2.2:切换回主小区后,等待一段时间D,D由无线局域网802.11协议规定,在D内不能传输数据,以免对其他用户造成干扰,时间D过后,若D = 0,表示切换回来后可立即使用信道,即退化为实现方式I,之后返回步骤I; [0207] Step 2.2: switching back to the primary cell, wait for a period of time D, D prescribed by the wireless LAN 802.11 protocol, data can not be transmitted in the D, so as to avoid interference to other users, after the time D, if D = 0, indicates handover after the back channels can be used immediately, i.e., reduced to implementations I, then returns to step I;

[0208] 步骤3: STA基于增强型分布式协调接入EDCA (Enhanced Distributed ChannelAccess)机制,在主小区和从小区同时执行退避过程,根据EDCA机制中的退避流程,在主小区和从小区分别初始化竞争窗CW值,然后进行退避,任何一个小区退避到O之后,即可执行接入和传输过程,接入和传输过程有三种实现方式,三种实现方式具体描述如下: [0208] Step 3: STA Coordination Access EDCA (Enhanced Distributed ChannelAccess) mechanism based on an enhanced distributed, while performing a backoff process from primary cell and the cell, according to the mechanism of EDCA backoff process are initialized from the primary cell and the cell contention window CW value, and then retracted, after a cell is retracted to any O, can perform an access transfer procedure, the access and transfer process and there are three implementations, the three ways described as follows:

[0209]实现方式1:在退避计数值减到O的小区接入,对应的接入和传输过程中,所有信道任意选择退避方式,即选择重新退避,或者选择在其他没有退避完的小区保留上一次退避计数值继续退避; [0209] Implementation 1: backoff count is reduced in the O cell access, the access and transmission process corresponding to all channels arbitrarily selected backoff mode, i.e. re-backoff selection, choose to keep or not completely retracted in other cell last backoff count value continues retracted;

[0210] 实现方式2:在当前信号与干扰加噪声比SINR (Signal to Interference plusNoise Rat1)最高的小区或平均SINR最高的小区执行接入和传输过程; [0210] 2 implementations: the current signal to interference plus noise and performs access cell with the highest transmission ratio SINR (Signal to Interference plusNoise Rat1) cell with the highest average or the SINR;

[0211]实现方式3:同一个信道的不同小区,选择SINR最高的小区执行接入和传输; [0211] 3 implementations: the same channel of a different cell, selection of cells with the highest SINR and performs access transmission;

[0212] 步骤3.1: STA采用上述实现方法,在退避完成后进行接入; [0212] Step 3.1: STA implemented using the above method, the access completion after retraction;

[0213] 步骤3.2:STA同时与从小区I,从小区2接入并传输数据;之后返回步骤2。 [0213] Step 3.2: STA at the same time from the cell I, cell 2 from the access and transmission of data; then returns to step 2.

[0214] 步骤4: STA在与多个AP关联之后,回复主AP及从AP的资源请求RR (resourcerequest)帧,收集帧并通过各个AP的TF的调度来执行基于正交频分多址接入OFDMA(Orthogonal Frequency Divis1n Multiple Access)技术的上行传输,或者通过各个AP触发触发-资源请求帧TF-RR (trigger frame-resource request)形成OFDMA随机接入,如果AP发的是TF,那么执行OFDMA;如果AP发的是TF-RR,那么执行OFDMA随机接入; [0214] Step 4: STA after a plurality of associated AP, and the AP master reply request RR (resourcerequest) resources frame from the AP, and collecting frame is performed based on an orthogonal frequency division multiple access scheduling each TF by an AP uplink transmission into OFDMA (Orthogonal Frequency Divis1n Multiple access) technology, or through the respective AP triggers - resource request frame TF-RR (trigger frame-resource request) formed OFDMA random access, if the AP is issued TF, then execution OFDMA ; If the AP is issued TF-RR, random access OFDMA is executed;

[0215] 返回步骤2; [0215] Returning to step 2;

[0216] 步骤5: STA在步骤I,步骤2与从AP多关联成功之后,如果从AP没有接收到发STA的数据包,继续侦听信道,按照802.11协议执行;如果从AP接收到发往STA的数据包,修改以太网包头域,将从AP接收到发往STA的数据包的目的地址修改为STA的MAC地址,从AP再将修改后的数据包通过有线网络送出去; [0216] Step 5: STA in step I, step 2 with the following AP plurality successful association, is not received from the AP to send the STA packet continues to listen channel, performed in accordance with the 802.11 protocol; if received from the AP sent STA packet, modifying Ethernet header field, a destination address is received from the AP STA to send data packets to modify the MAC address of the STA, send out from the wired network data packet and then modified by the AP;

[0217] 主AP接收到该数据包后,会转发给STA,之后返回步骤2; After the [0217] primary AP receives the data packet will be forwarded to the STA, then return to step 2;

[0218] 步骤6: STA存在时间门限!^,T2由支持多连接的无线局域网802.11协议规定,如果超过时间门限T2,当某从小区的干扰小于主小区,或吞吐量高于主小区时,则启动关联切换过程,启动关联切换过程的前提是主BSS和从BSS属于同一个扩展服务集合ESS (ExtendedService Set),关联切换过程为:当STA向待切换的从AP发出重新关联请求Reassociat1nRequest帧,从AP接收到Reassociat1n Request帧后回复Reassociat1n Response帧实现关联切换,或STA向STA在进行多关联之前隶属的小区的主AP发出解除关联Disassociat1n帧,实现关联切换。 [0218] Step 6: STA present time threshold ^, T2 by the wireless LAN 802.11 multiple connections predetermined, and if it exceeds the time threshold T2, when a smaller than the main cell from the interfering cell, or throughput higher than the main cell,! prerequisite for initiating the associated handover procedure starts the associated handover procedure is a front BSS and the BSS belonging to the same extended service set ESS (ExtendedService set), associated with the handover procedure is: when the STA resends the association from the AP to be switched request Reassociat1nRequest frame, belongs implemented before responding Reassociat1n Response frame received from the AP after the handover associated with the Reassociat1n Request frame, or associated to the STA STA performing multi-cell AP sent Disassociat1n main frame disassociation, association achieve handover.

[0219] 实施例9 [0219] Example 9

[0220]图12是实施例9的场景示意图,图14是实施例9的关键步骤多关联过程图。 [0220] FIG. 12 is a schematic diagram of a scene in Example 9, FIG. 14 is a multi-step associated with the process of FIG key Example 9. 假设网络中有3个BSS,每个BSS都有一个AP。 Suppose there are three network BSS, BSS has a per AP. 本实施例中的STA隶属于主AP。 STA embodiment of the present embodiment under the primary AP. 另外两个BSS的AP分别为从APl和从AP2。 The other two were from the BSS AP and APl from AP2. 本实施例举例说明了采用多BSS关联接入的方法,使得小区边缘用户进入多关联状态后,在协议规定的时限T内上行传输数据后,切换回主小区后,发现无法传输数据,先不进行数据传输冻结一段时间D后再开始与主AP进行接入和传输数据的方法。 After the present embodiment illustrates a method of using multiple access associated BSS, such that cell edge users into a multi-associated state, the uplink data transmission protocol within a predetermined time T, the switch back to the primary cell, the transmission data can not be found, not first data transmission starts after the freeze for a period of time D and the access method of transmitting data to the main AP.

[0221] 步骤1:小区边缘用户STA在进行多关联时任意选择如下两种实现方式: [0221] Step 1: the cell edge users arbitrarily selected STA during the following two implementations multiple association:

[0222]实现方式I为当小区边缘用户5了六在1'1时间内的平均干扰大于规定的干扰阈值,或者!^时间内平均吞吐量低于规定的吞吐量阈值时,所述干扰阈值和吞吐量阈值以及T1由支持多连接的无线局域网802.11协议规定,向主无线接入点AP (access point)发送多关联初始化帧MA-1NIT (Mult1-associate initializat1n),主AP接收到多关联初始化帧后,向STA返回多关联初始化同意帧MA-1NIT-ACK (Mult1-associate initial izat1nacknowledgement)或者多关联初始化不同意帧MA-1NIT_NAK (Mul t1-associateinitializat1n not acknowledgement),若STA接收到MA_INIT_ACK,STA侦听多个信道,并向STA所隶属的小区之外的其他小区的多个从AP发送多连接申请帧MA-Req (mult1-access-request) ,不论所述多个从AP的主信道是否相同,MA-Req在多个信道同时发送或者依次分别在各个信道上发送;在STA发送MA-Req帧后,根据无线局域网802.11协议,不是所有 When the [0222] I is when the six implementations average interference in the cell edge users within 1'1 5 times larger than the predetermined interference threshold, or! ^ Average throughput is below a predetermined threshold value within a certain time, the interference threshold value and throughput threshold T1 and WLAN 802.11 protocol supported by a predetermined multiple connections, wireless access point transmits to the master AP (access point) associated with the multi-frame initialization MA-1NIT (Mult1-associate initializat1n), the master AP receives multiple initialization association after the frame is returned to the STA plurality initiator association agree frame MA-1NIT-ACK (Mult1-associate initial izat1nacknowledgement) or multiple associated initialization disagree frame MA-1NIT_NAK (Mul t1-associateinitializat1n not acknowledgement), if the STA receives MA_INIT_ACK, STA investigation listen plurality of channels, and a plurality of cells other than the cell belongs STA transmits frames polylinker application MA-Req (mult1-access-request) from the AP, whether the primary channel from the plurality of the AP is the same , MA-Req transmitted in a plurality of channels are transmitted simultaneously or sequentially in the respective channels; MA-Req frame after sending in the STA, in accordance with 802.11 wireless local area network protocol, not all 从AP都会收到STA发送的MA-Req帧,从AP中收到MA-Req帧的从AP称为待选从AP,待选从AP在收到MA-Req帧后,向STA返回多连接申请同意帧MA-Req-A CK (mu lt1-access-requestacknowledgement)或者多连接申请拒绝帧MA-Req-NAK (mult1-access-request notacknowledgement);若STA收到待选从AP的MA-Req-ACK^,则向STA发送MA-Req-ACK帧的待选从AP与STA形成关联关系,S卩STA在向STA发送MA-Req-ACK帧的待选从AP上注册,向STA发送MA-Req-ACK帧的待选从AP为该STA提供服务,之后转入步骤2 ; MA-Req frame received from the AP sent by the STA will, MA-Req frame received from the AP is called the AP candidate, the candidate after receiving MA-Req frame is returned from the AP to the STA from the AP polylinker application agree frame MA-Req-a CK (mu lt1-access-requestacknowledgement) or a multi-application rejection connecting frame MA-Req-NAK (mult1-access-request notacknowledgement); if the STA received from the AP candidate MA-req- ACK ^, is sent to the STA to be selected from the MA-Req-ACK frame from the AP and associates a STA, STA S Jie registration from the AP sending MA-Req-ACK frame to be selected from the STA, the STA transmits the MA- Req-ACK frame from the AP candidate for serving STA, then proceeds to step 2;

[0223] STA若没有收到主AP的MA-1NIT-ACK或者没有收到任何一个从AP的MA-Req-ACK,则放弃多基本服务集BSS (Basic Service Set)关联流程; [0223] STA if the AP does not receive the main MA-1NIT-ACK or from the AP does not receive any of a MA-Req-ACK, give up the multiple basic service set BSS (Basic Service Set) linking process;

[0224]实现方式2为小区边缘用户314在1'1时间内的平均干扰大于规定的干扰阈值,或者!^时间内平均吞吐量低于规定的吞吐量阈值时,所述干扰阈值和吞吐量阈值以及T1由支持多连接的无线局域网802.11协议规定,侦听多个信道并向多个从AP发送多连接申请帧MA-Req,无论主AP和从AP的主信道是否相同,MA-Req均在多个信道同时发送或者依次分别在各个信道上发送;收到STA发送的MA-Req帧的从AP选择同意帧MA-Req-ACK或拒绝帧MA-Req-NAK 多连接申请; 若STA 接收到大于等于I 个AP 返回的MA-Req-ACK, 则发送多连接申请同意帧MA_Rpt (mult1-associate-report)向主AP告知多关联结果,即告知是否成功与从AP建立关耳关,主AP 接收至丨jMA_Rp t 帧后,返回MA_Rp t ACK 帧(mult1-associate-reportacknowledgement)确认,之后转入步骤2,STA若没有收到任何一个从AP的MA-Req-ACK,则放弃多BSS关联流程; [0224] implementation, 2 cell edge users 314 1'1 average interference over a predetermined time is greater than the interference threshold value, or! ^ When the average throughput within a time less than a certain predetermined threshold value, the interference threshold value and a certain threshold T1 and 802.11 wireless local area network supported by a predetermined multiple connections, and listens for a plurality of channels connecting a plurality of multi-transmission request frame MA-Req from the AP, and the AP is the same regardless of the main channel from the AP master, both MA-Req transmitting a plurality of channels are transmitted simultaneously or sequentially in the respective channels; selection received from the AP STA MA-Req frame is transmitted agree MA-Req-ACK frame or a reject frame MA-Req-NAK polylinker application; if receiving STA greater than equal to the I AP returned MA-Req-ACK, the sending multi-connection request agree frame MA_Rpt (mult1-associate-report) to inform multiple correlation result to the master AP, i.e. inform successful establishing from the AP off the ear closed, the main after receiving the AP to Shu jMA_Rp t frame, the frame returns MA_Rp t ACK (mult1-associate-reportacknowledgement) confirmation, then proceeds to step 2, STA if the AP does not receive from any of a MA-Req-ACK, give up the associated multi-BSS Process;

[0225] 步骤2:在STA多连接流程成功之后,处于多关联状态,多关联状态存在时限X,X由支持多连接的无线局域网802.11协议规定,在多关联状态下,如果有上行数据需要发送,则执行步骤3;如果收到主AP或从AP的调度帧,则执行步骤4;从AP收到发往STA的下行数据包,则执行步骤5;如果STA需要切换主AP,则执行步骤6; [0225] Step 2: After the STA multi-connection process is successful, in a multi-associated state, there are multiple associated state time X, X specified by the wireless LAN 802.11 multiple connections, in the multi-associated state, if there is uplink data to be transmitted , step 3 is performed; if the master AP is received or the schedule frame from the AP, step 4 is performed; sent to the STA receives downlink data packet from the AP, step 5 is performed; if AP STA needs to switch the main, step 6;

[0226] 其中多关联状态的时限X有两种实现方式: [0226] wherein X multiple time associated state implemented in two ways:

[0227] 实现方式I为规定时间X,X由协议规定,边缘节点在多小区BSS (Basic ServiceSet)连接T时间后,边缘节点STA在进入多关联状态X时间之后,自动切回主小区工作,之后返回步骤I; [0227] implementations I is a predetermined time X, X by the agreement, the edge node in the multi-cell BSS (Basic ServiceSet) connected time T, the edge node STA after entering the multi-associated state X time, automatically switch back to the main cell work, after returning to step I;

[0228] 实现方式2为STA切换回主小区后,需等待一段时间D,D由无线局域网802.11协议规定,在时间D内不能传输数据,以免对其他用户造成干扰,若D = 0,表示切换回来后可立即使用信道,即退化为实现方式I,之后返回步骤I; [0228] implementations 2 after the STA switches back to the primary cell, wait a period of time D, D prescribed by the wireless LAN 802.11 protocol, data can not be transmitted within a time D, to avoid interference to other users, if D = 0, indicates handover after the back channels can be used immediately, i.e., reduced to implementations I, then returns to step I;

[0229] 步骤2.1:在时间T内,STA与从APl和从AP2同时进行上行传输,时间T过后,切换回主小区; [0229] Step 2.1: in the time T, the APl and from the STA to perform uplink transmission from AP2 Meanwhile, after time T, the switch back to the primary cell;

[0230] 步骤2.2:切换回主小区后,STA发现无法传输数据,先不进行数据传输冻结一段时间D,以免对其他用户造成干扰,再开始与主AP进行接入和传输数据。 [0230] Step 2.2: switching back to the primary cell, the STA can not find the data transmission, data transmission without first freezing period of time D, to avoid interference to other users, and then starts data transmission with the main access AP. 之后返回步骤I。 After returning to step I.

[0231] 步骤3: STA基于增强型分布式协调接入EDCA (Enhanced Distributed ChannelAccess)机制,在主小区和从小区同时执行退避过程,根据EDCA机制中的退避流程,在主小区和从小区分别初始化竞争窗CW值,然后进行退避,任何一个小区退避到O之后,即可执行接入和传输过程,接入和传输过程有三种实现方式,三种实现方式具体描述如下: [0231] Step 3: STA Coordination Access EDCA (Enhanced Distributed ChannelAccess) mechanism based on an enhanced distributed, while performing a backoff process from primary cell and the cell, according to the mechanism of EDCA backoff process are initialized from the primary cell and the cell contention window CW value, and then retracted, after a cell is retracted to any O, can perform an access transfer procedure, the access and transfer process and there are three implementations, the three ways described as follows:

[0232]实现方式1:在退避计数值减到O的小区接入,对应的接入和传输过程中,所有信道任意选择退避方式,即选择重新退避,或者选择在其他没有退避完的小区保留上一次退避计数值继续退避; [0232] Implementation 1: backoff count is reduced in the O cell access, the access and transmission process corresponding to all channels arbitrarily selected backoff mode, i.e. re-backoff selection, choose to keep or not completely retracted in other cell last backoff count value continues retracted;

[0233] 实现方式2:在当前信号与干扰加噪声比SINR (Signal to Interference plusNoise Rat1)最高的小区或平均SINR最高的小区执行接入和传输过程; [0233] 2 implementations: the current signal to interference plus noise and performs access cell with the highest transmission ratio SINR (Signal to Interference plusNoise Rat1) cell with the highest average or the SINR;

[0234]实现方式3:同一个信道的不同小区,选择SINR最高的小区执行接入和传输; [0234] 3 implementations: the same channel of a different cell, selection of cells with the highest SINR and performs access transmission;

[0235] 步骤3.1: STA采用上述实现方法,在退避完成后进行接入; [0235] Step 3.1: STA implemented using the above method, the access completion after retraction;

[0236] 步骤3.2:STA同时与从小区I,从小区2接入并传输数据;之后返回步骤2。 [0236] Step 3.2: STA at the same time from the cell I, cell 2 from the access and transmission of data; then returns to step 2.

[0237] 步骤4: STA在与多个AP关联之后,回复主AP及从AP的资源请求RR (resourcerequest)帧,收集帧并通过各个AP的TF的调度来执行基于正交频分多址接入OFDMA(Orthogonal Frequency Divis1n Multiple Access)技术的上行传输,或者通过各个AP触发触发-资源请求帧TF-RR (trigger frame-resource request)形成OFDMA随机接入,如果AP发的是TF,那么执行OFDMA;如果AP发的是TF-RR,那么执行OFDMA随机接入; [0237] Step 4: STA after a plurality of associated AP, and the AP master reply request RR (resourcerequest) resources frame from the AP, and collecting frame is performed based on an orthogonal frequency division multiple access scheduling each TF by an AP uplink transmission into OFDMA (Orthogonal Frequency Divis1n Multiple access) technology, or through the respective AP triggers - resource request frame TF-RR (trigger frame-resource request) formed OFDMA random access, if the AP is issued TF, then execution OFDMA ; If the AP is issued TF-RR, random access OFDMA is executed;

[0238] 返回步骤2; [0238] Returning to step 2;

[0239] 步骤5: STA在步骤I,步骤2与从AP多关联成功之后,如果从AP没有接收到发STA的数据包,继续侦听信道,按照802.11协议执行;如果从AP接收到发往STA的数据包,修改以太网包头域,将从AP接收到发往节点A的数据包的目的地址修改为STA的MAC地址,从AP再将修改后的数据包通过有线网络送出去; [0239] Step 5: STA in step I, step 2 with the following AP plurality successful association, is not received from the AP to send the STA packet continues to listen channel, performed in accordance with the 802.11 protocol; if received from the AP sent STA packet, modifying Ethernet header field, a destination address from the AP receives a data packet addressed to the node a modified MAC address of the STA, send out from the wired network data packet and then modified by the AP;

[0240] 主AP接收到该数据包后,会转发给STA,之后返回步骤2; After the [0240] primary AP receives the data packet will be forwarded to the STA, then return to step 2;

[0241] 步骤6: STA存在时间门限!^,T2由支持多连接的无线局域网802.11协议规定,如果超过时间门限T2,当某从小区的干扰小于主小区,或吞吐量高于主小区时,则启动关联切换过程,启动关联切换过程的前提是主BSS和从BSS属于同一个扩展服务集合ESS (ExtendedService Set),关联切换过程为:当STA向待切换的从AP发出重新关联请求Reassociat1nRequest帧,从AP接收到Reassociat1n Request帧后回复Reassociat1n Response帧实现关联切换,或STA向STA在进行多关联之前隶属的小区的主AP发出解除关联Disassociat1n帧,实现关联切换。 [0241] Step 6: STA present time threshold ^, T2 by the wireless LAN 802.11 multiple connections predetermined, and if it exceeds the time threshold T2, when a smaller than the main cell from the interfering cell, or throughput higher than the main cell,! prerequisite for initiating the associated handover procedure starts the associated handover procedure is a front BSS and the BSS belonging to the same extended service set ESS (ExtendedService set), associated with the handover procedure is: when the STA resends the association from the AP to be switched request Reassociat1nRequest frame, belongs implemented before responding Reassociat1n Response frame received from the AP after the handover associated with the Reassociat1n Request frame, or associated to the STA STA performing multi-cell AP sent Disassociat1n main frame disassociation, association achieve handover.

Claims (1)

1.一种基于多BSS关联的接入与传输的方法,其特征在于包括下述步骤: 步骤1:小区边缘用户节点A在进行多关联时任意选择如下两种实现方式: 实现方式I为当小区边缘用户节点六在!^时间内的平均干扰大于规定的干扰阈值,或者!^时间内平均吞吐量低于规定的吞吐量阈值时,所述干扰阈值、吞吐量阈值以及!\由支持多连接的无线局域网802.11协议规定,向主无线接入点AP (access point)发送多关联初始化帧MA-1NIT (Mult1-associate initializat1n),主AP接收到多关联初始化帧后,向节点A返回多关联初始化同意帧MA-1NIT-ACK (Mult1-associate initializat1nacknowledgement)或者多关联初始化不同意帧MA-1NIT_NAK (Mul t1-associateinitializat1n not acknowledgement),若节点A接收到MA-1NIT-ACK,节点A侦听多个信道,并向节点A所隶属的小区之外的其他小区的多个从AP发送多连接申请帧MA-Req (mult1-access-request),不论所 1. Based on the transmission of multiple access methods associated BSS, comprising the following steps: Step 1: optionally selected during the following two ways to achieve a multi-user nodes associated cell edge A: Implementation manner that when I cell edge users in the six nodes! ^ average interference within a predetermined time is greater than an interference threshold value, or! ^ average throughput within a time less than a certain predetermined threshold, the interference threshold, and throughput threshold! \ supported by multiple 802.11 WLAN predetermined protocol connection, the wireless access point transmits to the master AP (access point) associated with the multi-frame initialization MA-1NIT (Mult1-associate initializat1n), after receiving a multi-master AP association initialization frame returns to the node a multi-association initialization frame agreed MA-1NIT-ACK (Mult1-associate initializat1nacknowledgement) or multiple frames associated initialization disagree MA-1NIT_NAK (Mul t1-associateinitializat1n not acknowledgement), when the node A receives the MA-1NIT-ACK, the node A plurality of listeners channels, and a plurality of cells other than the node a belongs is sent from the AP cell frames polylinker application MA-Req (mult1-access-request), regardless of the 述多个从AP的主信道是否相同,MA_Req在多个信道同时发送或者依次分别在各个信道上发送;在节点A发送MA-Req帧后,根据无线局域网802.11协议,不是所有从AP都会收到节点A发送的MA-Req帧,从AP中收到MA-Req帧的从AP称为待选从AP,待选从AP在收到MA-Req帧后,向节点A返回多连接申请同意帧MA-Req-ACK (mult1-access-request acknowledgement)或者多连接申请拒绝帧MA-Req-NAK (mult1-access-requestnot acknowledgement);若节点A收到待选从AP的MA-Req-ACK帧,则向节点A发送MA-Req-ACK 帧的待选从AP 与节点A 形成关联关系,即节点A 在向节点A 发送MA-Req-ACK 帧的待选从AP上注册,向节点A发送MA-Req-ACK帧的待选从AP为该节点A提供服务,之后转入步骤2; 节点A若没有收到主AP的ACK或者没有收到任何一个从AP的MA-Req-ACK,则放弃多基本服务集BSS (Basic Service Set)关联流程; 实现方式2为小区边缘用户节点六在!^时间内的 Said plurality of primary channel is the same from the AP, MA_Req simultaneously or sequentially transmitted on each channel are transmitted in a plurality of channels; after the node A transmits MA-Req frame, according to the 802.11 wireless local area network protocol received from the AP will not all MA-Req frame is transmitted from the node a, received from the AP MA-Req frame from the AP is called the AP candidate, the candidate after receiving MA-Req frame, multi-connection request from the AP returns to node a frame agree MA-Req-ACK (mult1-access-request acknowledgement) or a multi-application rejection connecting frame MA-Req-NAK (mult1-access-requestnot acknowledgement); if node a receives from the MA-Req-ACK frame to be selected from the AP, sending MA-Req-ACK frame to the node a to be selected from the group formed association from the AP to node a, i.e. the node a registered from the AP sending MA-Req-ACK frame to the node a to be selected, sending MA to the node a candidate -Req-ACK frame from the AP to provide service for the node a, then go to step 2; if the node a does not receive the ACK or the master AP from the AP does not receive any of a MA-Req-ACK, give up more than a basic service set BSS (basic service set) associated processes; implementation of the cell edge user node 2 is sixth in the time ^! 平均干扰大于规定的干扰阈值,或者T1时间内平均吞吐量低于规定的吞吐量阈值时,所述干扰阈值和吞吐量阈值以及T1*支持多连接的无线局域网802.11协议规定,侦听多个信道并向多个从AP发送多连接申请帧MA-Req,无论主AP和从AP的主信道是否相同,MA-Req在多个信道同时发送或者依次分别在各个信道发送;收到节点A发送的MA-Req帧的从AP选择同意帧MA-Req-ACK或拒绝帧MA-Req-NAK多连接申请;若节点A接收到大于等于I个AP返回的MA-Req-ACK,贝Ij发送多连接申请同意帧MA_Rpt (mult1-associate-report)向主AP告知多关联结果,即告知是否成功与从AP建立关联,主AP接收到MA_Rpt帧后,返回多连接请求同意应答帧MA_RptACK帧(mult1-associate-report acknowledgement)确认,之后转入步骤2,节点A若没有收到任何一个从AP的MA-Req-ACK,则放弃多BSS关联流程; 步骤2:在节点A多连接流程成功之后,处于多关联状 When the average interference is greater than the predetermined interference threshold, or the average throughput is below a predetermined threshold value within a certain time T1, and the interference threshold value and a wireless LAN throughput threshold T1 * 802.11 protocol supports multiple connections predetermined listener plurality of channels and transmitting a plurality of frames from the AP polylinker application MA-Req, regardless of the AP and the master AP from the primary channel are the same, MA-Req sent simultaneously or sequentially in the respective channels are transmitted in a plurality of channels; node a sends receipt of AP selects consent from MA-Req frame frame MA-Req-ACK, or the rejected frame MA-Req-NAK polylinker application; if node a receives greater than or equal the I AP returned MA-Req-ACK, shellfish Ij transmission polylinker application agree frame MA_Rpt (mult1-associate-report) to inform multiple correlation result to the master AP, i.e., inform the success associated with establishing the AP, the master AP receives MA_Rpt frame, return multiple connection requests consent response frame MA_RptACK frame (mult1-associate -report acknowledgement) confirmation, then proceeds to step 2, if the node a does not receive from the AP in any of a MA-Req-ACK, give up the associated multi-BSS procedure; step 2: after node a successful multi-connection process, in the multi- association like ,多关联状态存在时限X,X由支持多连接的无线局域网802.11协议规定,在多关联状态下,如果有上行数据需要发送,则执行步骤3;如果收到主AP或从AP的调度帧,则执行步骤4;从AP收到发往节点A的下行数据包,则执行步骤5;如果节点A需要切换主AP,则执行步骤6; 其中多关联状态的时限X有两种实现方式: 实现方式I为规定时间x,x由协议规定,边缘节点在多小区BSS (Basic Service Set)连接T时间后,边缘节点在进入多关联状态X时间之后,自动切回主小区工作,之后返回步骤I; 实现方式2为节点A切换回主小区后,需等待一段时间D,D由无线局域网802.11协议规定,在时间D内不能传输数据,以免对其他用户造成干扰,若D = 0,表示切换回来后可立即使用信道,即退化为实现方式I,之后返回步骤I; 步骤3:节点A基于增强型分布式协调接入EDCA (Enhanced Distributed ChannelAccess)机制 , There are multiple associated state time X, X 802.11 wireless local area network protocol supported by multiple connections specified in the multi-associated state, if there is uplink data to be transmitted, step 3; if the schedule frame received from the master AP or the AP, step 4 is performed; received downlink data packet sent from the node a to the AP, step 5 is performed; if node a needs to switch the main AP, step 6 is performed; wherein the plurality of time X association state in two ways: to achieve after embodiment I time x, x by the agreement is predetermined, the edge node connected to the time T in a multi-cell BSS (Basic Service Set), the edge node into a multi-associated state X time, automatically switch back to the main cell work, then returns to step I ; implementations 2 after the node A is switched back to the primary cell, wait a period of time D, D prescribed by the wireless LAN 802.11 protocol, data can not be transmitted within a time D, to avoid interference to other users, if D = 0, represents a switch back after the channels can be used immediately, i.e., reduced to implementations I, before returning to step I; step 3: A node based enhanced distributed coordination access EDCA (enhanced distributed ChannelAccess) mechanism ,在主小区和从小区同时执行退避过程,根据EDCA机制中的退避流程,在主小区和从小区分别初始化竞争窗CW值,然后进行退避,任何一个小区退避到O之后,即可执行接入和传输过程,接入和传输过程有三种实现方式,三种实现方式具体描述如下: 实现方式1:在退避计数值减到O的小区接入,对应的接入和传输过程中,,所有信道任意选择退避方式,即选择重新退避,或者选择在其他没有退避完的小区保留上一次退避计数值继续退避; 实现方式2:在当前信号与干扰加噪声比SINR (Signal to Interference plus NoiseRat1)最高的小区或平均SINR最高的小区执行接入和传输过程; 实现方式3:同一个信道的不同小区,选择SINR最高的小区执行接入和传输过程; 之后返回步骤2; 步骤4:边缘节点A在与多个AP关联之后,回复主AP及从AP的资源请求RR (resourcerequest)帧,资源收集请求RAR (r After performing the primary cell and the cell at the same time from a backoff procedure, according to the process EDCA backoff mechanisms, initialization contention window CW value from each cell in the main cell and then retracted, a cell retracted to any O, can perform access and the transmission process, there are three access and transport implementation process, the three ways described as follows: implementation 1: O in reduced cell access backoff count value, the access and transmission process corresponding to all the channels,, arbitrarily select a backoff mode, i.e., choose to re-backoff, or choose to keep on the other does not completely retracted cell a backoff count value continues retracted; implementations 2: the current signal to interference-plus-noise (plus signal to interference NoiseRat1) than the highest SINR cell or cell with the highest average SINR and performing access transmission; implementations 3: the same channel in different cells, cell selection performs access highest SINR and transmission process; before returning to step 2; step 4: the edge node a after a plurality of associated AP, and the AP master reply request RR (resourcerequest) frame from the AP resources, resource collection request RAR (r esource allocat1n request)帧通过各个AP的TF的调度来执行基于正交频分多址接入OFDMA (Orthogonal Frequency Divis1n MultipleAccess)技术的上行传输,或者通过各个AP触发触发-资源请求帧TF-RR (trigger frame-resource request)形成OFDMA随机接入,即如果AP发的是TF,那么执行0FDMA;如果AP发的是TF-RR,那么执行OFDMA随机接入; 返回步骤2; 步骤5:节点A在步骤1、步骤2与从AP多关联成功之后,如果从AP没有接收到发往节点A的数据包,继续侦听信道,按照802.11协议执行;如果从AP接收到发往节点A的数据包,修改以太网包头域,将从AP接收到发往节点A的数据包的目的地址修改为节点A的MAC地址,从AP再将修改后的数据包通过有线网络送出去; 主AP接收到该数据包后,会转发给节点A,之后返回步骤2; 步骤6:节点A存在时间门限T2,T2由支持多连接的无线局域网802.11协议规定,如果超过时间门限T2,当某 esource allocat1n request) TF frame scheduling is performed by each AP based on an orthogonal frequency division multiple access OFDMA (Orthogonal Frequency Divis1n MultipleAccess) uplink transmission technology, or by each AP Triggers - resource request frame TF-RR (trigger frame-resource request) forming a random access OFDMA, i.e., if the AP is made TF, OFDMA is executed; if the AP is issued TF-RR, then performs a random access OFDMA; return to step 2; step 5: a node in step 1, step 2 and the after AP plurality successful association, is not received from the AP the data packets sent to the node a continues listening to the channel, performed in accordance with the 802.11 protocol; if received from the AP the data packets sent to the node a, modified Ethernet header field, received from the AP to the destination address of the packet addressed to the node a modified MAC address of the node a, to send out data packets from the AP through a wired network and then modified; master AP receives the data packet after, will be forwarded to the node a, before returning to step 2; step 6: the presence of a time gate node T2 a, T2 defined by the 802.11 wireless LAN protocol multiple connections, if more than the time threshold T2, when a 小区的干扰小于主小区,或吞吐量高于主小区时,则启动关联切换过程,启动关联切换过程的前提是主BSS和从BSS属于同一个扩展服务集合ESS (ExtendedService Set),关联切换过程为:当节点A向待切换的从AP发出重新关联请求(Reassociat1n Request)帧,从AP接收到Reassociat1n Request帧后回复重新关联请求应答帧Gteassociat1n Response)实现关联切换,或节点A向节点A在进行多关联之前隶属小区的主AP发出解除关联Disassociat1n,实现关联切换。 When the cell is smaller than the main cell interference, or throughput than the primary cell, a handover procedure is initiated association, with the proviso that the handover procedure starts the associated master and the BSS from the BSS belonging to the same Extended Service Set ESS (ExtendedService Set), the handover process is associated : when issuing a reassociation request (Reassociat1n request) frame from the AP to be switched the node a, upon receiving a frame from the AP Reassociat1n request reply a reassociation request response frame Gteassociat1n response) associated switch implemented, or performing multiple node a to the node a before the primary cell under the associated AP issuing disassociation Disassociat1n, achieve associated switch.
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