CN102123481B - 选择多带接入点以与多带移动站相关联的方法及装置 - Google Patents

选择多带接入点以与多带移动站相关联的方法及装置 Download PDF

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CN102123481B
CN102123481B CN201010624833.7A CN201010624833A CN102123481B CN 102123481 B CN102123481 B CN 102123481B CN 201010624833 A CN201010624833 A CN 201010624833A CN 102123481 B CN102123481 B CN 102123481B
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band
access point
wtru
information
receiver unit
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CN102123481A (zh
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亚蒂·钱德拉
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美商内数位科技公司
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management, e.g. wireless traffic scheduling or selection or allocation of wireless resources
    • H04W72/04Wireless resource allocation
    • H04W72/044Wireless resource allocation where an allocation plan is defined based on the type of the allocated resource
    • H04W72/0453Wireless resource allocation where an allocation plan is defined based on the type of the allocated resource the resource being a frequency, carrier or frequency band
    • 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
    • H04L5/0048Allocation of pilot signals, i.e. of signals known to the receiver
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/08Access restriction or access information delivery, e.g. discovery data delivery
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/08Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/12Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/30Connection release
    • H04W76/34Selective release of ongoing connections
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02Terminal devices
    • H04W88/06Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/20Selecting an access point
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08Access point devices
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08Access point devices
    • H04W88/10Access point devices adapted for operation in multiple networks, e.g. multi-mode access points
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00Reducing energy consumption in communication networks
    • Y02D30/70Reducing energy consumption in communication networks in wireless communication networks

Abstract

本申请揭露一种用于选择多个多带存取点(APs)其中之一以与一多带无线传输/接收单元(WTRU)联结的方法与装置。该多带存取点广播关于多频带的频带信息,该多带存取点是配置用于在该多频带上进行操作。该多带无线传输/接收单元根据该频带信息,选择联结的一特定多带存取点以及用于与所选择多带存取点进行通信的频带。如果该多带无线传输/接收单元从该选择的多带存取点所接收的频带信息,指示该选择频带的一特性(例如,路径损失、负载、输贯量、性能、后置网络)为不能接受的,该多带无线传输/接收单元决定与该特定多带存取点解除联结,或是通过一不同的频带继续与该特定多带存取点联结。

Description

选择多带接入点以与多带移动站相关联的方法及装置
[0001] 本申请是2006年3月30日提交的题为“选择多带存取点伴随多带移动站方法及装置”、申请号为200680011270.6的中国专利申请的分案申请。
技术领域
[0002] 本发明与一种包含多个多带接入点(AP)与一多带无线发射/接收单元(WTRU)(换言之,一种移动站)的无线通信系统有关。更特别的,本发明与一种基于从多个多带接入点传送至该多带无线发射/接收单元的频带信息,选择一特定多带接入点以相关联的方法与装置有关。
背景技术
[0003] 一种典型的无线局域网络(WLAN)包含一接入点(AP),其在该接入点的覆盖区域中提供对于无线发射/接收单元(WTRU)的无线电存取。该接入点则包括一基本服务套组(BSS),其为以IEEE 802.11为基础无线局域网络的基本建立区块。多个基本服务套组也可以通过一种分布式系统(DS)互连,以形成一种延伸服务套组(ESS)。
[0004] 该无线局域网络可以配置为一种基础结构模式,或是一种特别模式。在该基础结构模式中,由一接入点控制无线通信。该接入点周期性地广播信标帧至可能的无线发射/接收单元以进行识别,该无线发射/接收单元则进一步与该接入点进行通信。在该特别模式中,多个无线发射/接收单元则在一种点对点通信模式中操作。该无线发射/接收单元建立本身的通信,而不需要与一网络组件结合。然而,一接入点可以配置以作用为连接至另一网络的桥接器或路由器,像是连接至因特网。
[0005] 该无线发射/接收单元与该接入点可配置以利用多频带进行通信。在一种传统无线通信系统中,一多带无线发射/接收单元在一频带的不同通道上传送多个探查请求,己发现在该区域中是否有任何可利用的接入点。一旦一接入点接收该探查请求,其传送一探查响应封包至该无线发射/接收单元。该接入点将在一特定频带中,在其操作通道上传送探查响应封包。该探查响应封包包含该无线发射/接收单元要求的参数,比如支持的速率等等以与该接入点相关联。该无线发射/接收单元将发送一关联请求封包,并等待来自一接入点的关联响应封包,以进行进一步的数据通信。
[0006] —旦相关联,该多带无线发射/接收单元可以通过传送一探查请求封包,并等待一探查响应封包,以扫描其它的频带而寻找一较佳的通信带。在接收到另一探查响应封包的情况下,该无线发射/接收单元比较该频带及/或该接入点,并选择一更好的频带及/或接入点。
[0007] 在该传统的无线通信系统中,该多带无线发射/接收单元必须扫描并比较不同的频带,以决定提供最佳无线通信质量的频带。然而,这些扫描与比较功能为耗时并需要一大量的电池电力。其需要一种在进行频带与通道选择决策时,减少使用时间与需要电池电力的方法与装置。
发明内容
[0008] 本发明与一种选择多个多带接入点(AP)之一,以与一多带无线发射/接收单元(WTRU)相关联的方法与装置。该多带接入点广播关于多带接入点在其上被配置以操作的多频带的频带信息。该多带无线发射/接收单元根据该频带信息选择相关联的一特定多带接入点以及选择用于与所选择多带接入点进行通信的频带。如果该多带无线发射/接收单元从该选择多带接入点所接收到的频带信息,指示该选择频带的一特性(例如,路径损失、负载、吞吐量、性能、回程(backhaul))是不能接受的,该多带无线发射/接收单元决定与该特定多带接入点解关联(disassociate),或是通过一不同的频带继续与该特定多带接入点相关联。
附图说明
[0009] 本发明的详细了解将从后续描述通过范例的方式获得,并且由结合伴随图示得到了解,其中:
[0010]图1显示一种无线通信系统,其包含根据本发明所操作的多个多带接入点与一多带无线发射/接收单元;
[0011]图2为一种示范信标帧,其包含由多个多带接入点,传送至图1中无线通信系统多带无线发射/接收单元的频带信息;
[0012]图3为根据本发明,由该多带无线发射/接收单元选择以与多带接入点的一个接入点相关联的处理流程图;
[0013]图4为根据本发明,由该多带无线发射/接收单元决定是否改变用来与一多带接入点进行通信的特定频带,或是与一不同的多带接入点相关联的处理流程图;以及
[0014] 图5为根据本发明,用以通过一更佳的频带,在该多带无线发射/接收单元与一更佳的多带接入点之间建立无线通信链接的处理流程图。
具体实施方式
[0015] 此后,该术语"无线发射/接收单元(WTRU)"包含但不局限为一使用者设备(UE)、移动站、固定或移动用户单元、寻呼机,或是具有在无线环境中操作能力的任何其它类型的装置。这样的无线发射/接收单元包含但不局限于电话、视频电话、因特网预备电话、个人数据助理(PDA)以及具有网络性能无线调制解调器的笔记本电脑。
[0016] 当此后谈到术语"接入点(AP)"其包含但不局限为一节点B、基站、位置控制器,或是可以在无线环境中提供与该接入点相关联的其它无线发射/接收单元无线存取的任何其它接口装置形式。
[0017] 本发明适用于任何无线通信系统,包含但不局限为以802.X为基础的无线通信系统。
[0018]图1显示一种无线通信系统100,其包含根据本发明操作的多个多带接入点1S1-1OSn与一多带无线发射/接收单元110。每个多带接入点105 ^1Sn与该多带无线发射/接收单元110都至少在两个频带上操作。该多带接入点1S1-1OSn传送频带信息115^115,,其指示每个多带接入点105^105,在其上被配置以操作不同多带。每个多带接入点1S1-1OSn都包含一各自的收发信机120 ^12(^与一各自的处理器125 r125No每个各自的收发信机12(^-120#』配置以在至少两个不同的频带上操作。每个各自的处理器125 r125N贝IJ产生并安排该各别频带信息115「115N,并将其提供至该收发信机120「120Ν以进行传输。该多带无线发射/接收单元110也包含一收发信机130与一处理器135。该收发信机130则配置以在至少两个不同的频带上操作。该处理器135处理由该收发信机130从该多带接入点105^105,所接收的频带信息115^115,,根据该频带信息115^115,选择一多带接入点105以相关联,以及选择用于与该选择多带接入点105通信的频带。
[0019] 该多带无线发射/接收单元110与该多带接入点1S1-1OSn^以使用任何的管理、控制或数据封包,以提供该频带信息至该多带无线发射/接收单元110。举例而言,一种认证帧(其为一种管理帧)也可以用来传送多频带信息。同样的,该封包可以在任何目前或未来的无线局域网络封包上捎带(piggyback)。
[0020] 替代的,也可以利用在该多带无线发射/接收单元110与该多带接入点1S1-1OSn之间的私有信息交换,以提供该频带信息至该多带无线发射/接收单元110。
[0021] 图2显示一种示范的信标帧,其包括从每个多带接入点105^105,传送至图1中无线通信系统100多带无线发射/接收单元110的频带信息115。该频带信息115指示一特定多带接入点105是否支持多频带ZOS11Sn、信道数目215与定时信息220或其它等等。
[0022] 该频带信息115可以另外包含对于每个频带205「2(^的质量度量信息210r210No该质量度量信息可以包含但不局限为每个频带上的路径损失、负载(例如,相关联的无线通信系统100的数目)、吞吐量、性能与回程。
[0023] 图3为根据从该多带接入点1S1-1OS1/^送至该多带无线发射/接收单元110的频带信息IIS1-1Mn,在图1无线通信系统100中特定多带接入点1S1-1OS1^t—与该多带无线发射/接收单元110之间建立无线通信链接的处理300流程图。在步骤305中,多个多带接入点1S1-1OSn广播关于多带接入点105 ^1Sn在其上被配置以操作的多频带的频带信息115^115,。如图2所示,该频带信息115^115,可以在一信标帧内广播。在步骤310中,一多带无线发射/接收单元I1接收并处理该频带信息115^115]^。在步骤315中,该多带无线发射/接收单元110基于该频带信息IIS1-1lS1^A多带接入点105 ^1Sn选择特定的一个以相关联,以及选择用于与所选择多带接入点105进行通信的频带。
[0024] 图4为根据本发明,由该多带无线发射/接收单元100决定是否改变用来与一多带接入点105进行通信的特定频带,或是与一不同的多带接入点105相关联的处理400流程图。在步骤405中,该多带无线发射/接收单元100与一特定多带接入点105在一特定频带上相关联。在步骤410中,该多带无线发射/接收单元100从该特定多带接入点105接收频带信息115,其包含指示该特定频带具有例如像是吞吐量不足的质量度量。在步聚415中,该多带无线发射/接收单元100与该多带接入点105解关联并且另一多带接入点105相关联,或是继续与该相同的多带接入点105通过一包含指示良好(例如,高)吞吐量质量度量频带信息115的不同频带相关联。
[0025] 图5为根据本发明,用以通过一更佳的频带,在该多带无线发射/接收单元与一更佳的多带接入点之间建立无线通信链接的处理500流程图。在步骤505中,一多带无线发射/接收单元loo广播由多个多带接入点1s1-1os1^f接收的一关联请求封包或探查请求封包。该多带无线发射/接收单元100可以在请求封包中包含对于多带性能与该无线发射/接收单元100相关信息的指示。在步骤510中,每个多带接入点105^105,都传送一关联响应封包或探查响应封包至该多带无线发射/接收单元100,其包含根据该无线发射/接收单元100多带性能的频带信息115^115,。在步骤515中,该多带无线发射/接收单元100基于该频带信息115^115,,选择一更佳的频带及更佳的多带接入点105以相关联。
[0026] 该另一实施例中,该无线通信系统100除该多带接入点1051_1051<与该多带无线发射/接收单元104a以外,也可以包含一单带接入点与一单带无线发射/接收单元。如果该单带无线发射/接收单元与一多带接入点105相关联,因为该单带无线发射/接收单元并非配置以在多频带上通信,则非关于所述单带无线发射/接收单元被配置以操作的频带的信息的有关该多带接入点105多频带的信息将被该单带无线发射/接收单元忽略。该单带接入点在一信标帧中广播关于其单频带的信息(像是定时、负载,或其它等等)。一单带无线发射/接收单元与一多带无线发射/接收单元110两者都可以使用此信息,以决定是否与该单带接入点相关联。
[0027] 根据本发明,该多带无线发射/接收单元110扫描不同频带以寻找适当的接入点以相关联时并不需要耗费显著时间与电池电力。此外,通过提供具有每个频带质量度量(例如吞吐量)的多带无线发射/接收单元110,该无线发射/接收单元不但可以将其本身的吞吐量最佳化,也可以将该接入点105的吞吐量最佳化。
[0028] 实施例
[0029] 1.一种在多个多带接入点(AP)与多带无线发射/接收单元(WTRU)之间的无线通信的方法,该多带接入点与该无线发射/接收单元被配置成经由至少两不同频带以进行通信,该方法包括:每个多带接入点广播关于该多带接入点在其上被配置以操作的多频带的频带信息;
[0030] 该多带无线发射/接收单元处理该频带信息,以及根据该频带信息,选择一特定多带接入点以相关联以及选择用于与所选择多带接入点进行通信的一频带。
[0031] 2.如实施例1的方法,其中该频带信息是由每个多带接入点在一信标帧中所广播。
[0032] 3.如实施例1的方法,其中该频带信息是由该多带接入点发送,以响应由该多带无线发射/接收单元发送的探查请求封包。
[0033] 4.如实施例3的方法,其中该多带无线发射/接收单元包含关于在该探查请求封包中该多带无线发射/接收单元的多频率性能的频带信息。
[0034] 5.如实施例1的方法,其中该频带信息是由该多带接入点发送以响应由该多带无线发射/接收单元发送的一联结请求封包。
[0035] 6.如实施例5的方法,其中该多带无线发射/接收单元包含关于在该关联请求封包中该多带无线发射/接收单元的多频率性能的频带信息。
[0036] 7.如实施例1的方法,其中该频带信息是由所述多带接入点发送,以响应由该多带无线发射/接收单元发送的封包。
[0037] 8.如实施例1的方法,其中该频带信息是由一私有信息交换发送。
[0038] 9.如实施例1-8中任一实施例的方法,其中该频带信息包含多频带支持的指示、该频带的通道数目及各频带频率信息中至少其中之一。
[0039] 10.如实施例1-9中任一实施例的方法,其中该频带信息包含该频带的质量度量信息,该接入点是配置以在该频带上进行操作。
[0040] 11.如实施例10的方法,其中该质量度量信息包含各频带的一路径损失、一负载、吞吐量、性能与回程的至少其中之一。
[0041] 12.一种无线通信系统,包括:多个多带接入点(APs),多个多带接入点广播关于多带接入点在其上配置以操作的多频带的频带信息;以及一多带无线发射/接收单元(WTRU),其配置以处理该频带信息,并根据该频带信息选择一特定多带接入点以相关联以及用以与所选择多带接入点进行通信的一频带。
[0042] 13.如实施例12的系统,其中该频带信息是由每个多带接入点在一信标帧中广播。
[0043] 14.如实施例12的系统,其中该频带信息是由所述多带接入点发送,以响应由该多带无线发射/接收单元发送的探查请求封包。
[0044] 15.如实施例14的系统,其中该多带无线发射/接收单元包含关于在该探查请求封包中的该多带无线发射/接收单元多频率性能的频带信息。
[0045] 16.如实施例12的系统,其中该频带信息是由所述多带接入点发送,以响应由该多带无线发射/接收单元发送的一关联请求封包。
[0046] 17.如实施例16的系统,其中该多带无线发射/接收单元包含关于在该联结请求封包中的该多带无线发射/接收单元多频率性能的频带信息。
[0047] 18.如实施例12的系统,其中该频带信息是由所述多带接入点发送,以响应由该多带无线发射/接收单元发送的一管理封包。
[0048] 19.如实施例12的系统,其中该频带信息是由一私有信息交换发送。
[0049] 20.如实施例12-19中任一实施例的系统,其中该频带信息包含多频带支持的指示、该频带的通道数目以及各频带的频率信息中至少其中之一。
[0050] 21.如实施例12-20中任一实施例的系统,其中该频带信息包含该频带的质量度量信息,该接入点是配置以在该频带上进行操作。
[0051] 22.如实施例21的系统,其中该质量度量信息包含各频带的一路径损失、一负载、一吞吐量、性能与回程中至少其中之一。
[0052] 23.一种在多带接入点(APs)与一多带无线发射/接收单元(WTRU)之间的无线通信的方法,该接入点与该无线发射/接收单元被配置成通过多个不同频带进行通信,该无线通信方法包括:该多带无线发射/接收单元通过所述不同频带的一第一频带与所述多带接入点中一特定多带接入点相关联;该多带无线发射/接收单元从该特定多带接入点接收频带信息,其指示该第一频带的一特性为不能接受的;以及该多带无线发射/接收单元决定是否与该特定多带接入点解关联或是通过所述频带中一第二频带继续与该特定多带接入点相关联。
[0053] 24.如实施例23的方法,其中该不能接受的特性为吞吐量。
[0054] 25.如实施例23的方法,其中该不能接受的特性为路径损失。
[0055] 26.如实施例23的方法,其中该不能接受的特性为负载。
[0056] 27.如实施例23的方法,其中该不能接受的特性为性能。
[0057] 28.如实施例23的方法,其中该不能接受的特性为回程。
[0058] 29.一种无线通信系统,包括:多个多带接入点(APs),该多带接入点广播关于每个多带AP被配置以在其上操作的多频带的频带信息;以及一多带无线发射/接收单元(WTRU),其通过所述频带中一第一不同频带与所述多带接入点中一特定多带接入点相关联,其中该多带无线发射/接收单元从该特定多带接入点接收频带信息,其指示该第一频带的一特性为不能接受的,且该多带无线发射/接收单元决定是否与该特定多带接入点解关联或是通过所述频带中一第二频带继续与该特定多带接入点相关联。
[0059] 30.如实施例29的系统,其中该不能接受的特性为吞吐量。
[0060] 31.如实施例29的系统,其中该不能接受的特性为路径损失。
[0061] 32.如实施例29的系统,其中该不能接受的特性为负载。
[0062] 33.如实施例29的系统,其中该不能接受的特性为性能。
[0063] 34.如实施例29的系统,其中该不能接受的特性为后置网络。
[0064] 35.一种多带无线发射/接收单元(WTRU)被配置成与多带AP通信,该多带无线发射/接收单元(WTRU)该包括:一收发信机,被配置成通过不同频带中一第一频带与所述多带接入点中一特定多带接入点相关联,以及一处理器被配置成根据由该收发信机从该特定多带接入点所接收指示该第一频带一特性为不能接受的频带信息,以决定是否与该特定多带接入点解关联或是通过一第二频带继续与该特定多带接入点相关联。
[0065] 36.如实施例35的无线发射/接收单元,其中该不能接受的特性为吞吐量。
[0066] 37.如实施例35的无线发射/接收单元,其中该不能接受的特性为路径损失。
[0067] 38.如实施例35的无线发射/接收单元,其中该不能接受的特性为负载。
[0068] 39.如实施例35的无线发射/接收单元,其中该不能接受的特性为性能。
[0069] 40.如实施例35的无线发射/接收单元,其中该不能接受的特性为回程。
[0070] 41.一种嵌入一多带无线发射/接收单元中的集成电路(1C),所述无线发射/接收单元被配置成与多带接入点(APs)通过多个不同频带通信,该IC包括:一收发器,该收发信机被配置成通过所述不同频带中一第二频带与所述多带接入点中一特定多带接入点相关联,以及一处理器,被配置成根据由该收发信机从该特定多带接入点所接收指示该第一频带的一特性为不能接受的频带信息,以决定是否与该特定多带接入点解关联或是通过一第二频带继续与该特定多带接入点相关联。
[0071] 42.如实施例41的集成电路,其中该不能接受的特性为吞吐量。
[0072] 43.如实施例41的集成电路,其中该不能接受的特性为路径损失。
[0073] 44.如实施例41的集成电路,其中该不能接受的特性为负载。
[0074] 45.如实施例41的集成电路,其中该不能接受的特性为性能。
[0075] 46.如实施例41的集成电路,其中该不能接受的特性为回程。
[0076] 虽然本发明的特征与组件己经在较佳实施例中以特定结合方式叙述,每个特征与组件也可以单独而不与本发明的其它特征及组件一起使用,或是与本发明其它特征与组件一起或单独进行不同的结合。

Claims (18)

1.一种用于一多带接入点AP的方法,该方法包括: 从多带无线发射/接收单元WTRU接收探查请求消息,其中所述探查请求消息包括指示所述WTRU的多频率性能的第一频带信息; 传送探查响应消息到所述多带WTRU,其中所述探查响应消息响应于所述探查请求消息,并且所述探查响应消息包括关于由所述多带AP支持的多频带的信息,以及其中所述多频带包括第一频带和第二频带; 在所述第一频带上建立与所述多带WTRU的关联; 传送第二频带信息到所述多带WTRU ;以及 在传送第二频带信息到所述多带WTRU之后,在所述第二频带上保持与所述多带WTRU的关联或终止与所述多带WTRU的关联。
2.根据权利要求1所述的方法,还包括: 从所述多带WTRU接收关联请求消息;以及 传送关联响应消息到所述多带WTRU。
3.根据权利要求1所述的方法,还包括: 在所述第一频带上与所述多带WTRU通信数据。
4.根据权利要求1所述的方法,其中基于质量度量,所述与所述多带WTRU的关联被保持或终止。
5.根据权利要求4所述的方法,其中所述质量度量是吞吐量。
6.根据权利要求4所述的方法,其中所述质量度量是路径损失。
7.根据权利要求4所述的方法,其中所述质量度量是负载。
8.根据权利要求4所述的方法,其中所述质量度量是性能。
9.根据权利要求4所述的方法,其中所述质量度量是回程。
10.一种多带接入点AP,该AP包括: 处理器;以及 与所述处理器通信的收发器, 其中所述收发器被配置成: 从多带无线发射/接收单元WTRU接收一探查请求消息,所述探查请求消息包括指示所述WTRU的多频率性能的第一频带信息:以及 传送探查响应消息到所述多带WTRU,其中所述探查响应消息响应于所述探查请求消息,并且所述探查响应消息包括关于由所述多带AP支持的多频带的信息,以及其中所述多频带包括第一频带和第二频带; 其中所述处理器被配置成: 在所述第一频带上建立与所述多带WTRU的关联; 其中所述收发器还被配置成: 传送第二频带信息到所述多带WTRU ;以及 其中所述处理器还被配置成: 在传送第二频带信息到所述多带WTRU之后,在所述第二频带上保持与所述多带WTRU的关联或终止与所述多带WTRU的关联。
11.根据权利要求10所述的多带接入点AP,其中所述收发器和所述处理器还被配置 成: 从所述多带WTRU接收关联请求消息;以及 传送关联响应消息到所述多带WTRU。
12.根据权利要求10所述的多带接入点AP,其中所述收发器和所述处理器还被配置成: 在所述第一频带上与所述多带WTRU通信数据。
13.根据权利要求10所述的多带接入点AP,其中基于质量度量,所述与所述多带WTRU的关联被保持或终止。
14.根据权利要求13所述的AP,其中所述质量度量是吞吐量。
15.根据权利要求13所述的AP,其中所述质量度量是路径损失。
16.根据权利要求13所述的AP,其中所述质量度量是负载。
17.根据权利要求13所述的AP,其中所述质量度量是性能。
18.根据权利要求13所述的AP,其中所述质量度量是回程。
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