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CN1934880A - 以多模式无线传输/接收单元切换无线通信系统间无线存取技术的方法及系统 - Google Patents

以多模式无线传输/接收单元切换无线通信系统间无线存取技术的方法及系统 Download PDF

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CN1934880A
CN1934880A CNA2005800078999A CN200580007899A CN1934880A CN 1934880 A CN1934880 A CN 1934880A CN A2005800078999 A CNA2005800078999 A CN A2005800078999A CN 200580007899 A CN200580007899 A CN 200580007899A CN 1934880 A CN1934880 A CN 1934880A
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wireless communication
communication system
receive unit
radio access
interconnection
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CN1934880B (zh
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卡梅尔·M·沙恩
史蒂芬·E·泰利
布莱恩·格列格里·基尔南
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InterDigital Technology Corp
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/005—Control or signalling for completing the hand-off involving radio access media independent information, e.g. MIH [Media independent Hand-off]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0061—Transmission or use of information for re-establishing the radio link of neighbour cell information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/14—Reselecting a network or an air interface
    • H04W36/144—Reselecting a network or an air interface over a different radio air interface technology
    • H04W36/1446—Reselecting a network or an air interface over a different radio air interface technology wherein at least one of the networks is unlicensed
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/26—Reselection being triggered by specific parameters by agreed or negotiated communication parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/18—Selecting a network or a communication service
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/04—Reselecting a cell layer in multi-layered cells
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/20—Selecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/12—WLAN [Wireless Local Area Networks]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/02—Inter-networking arrangements

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Small-Scale Networks (AREA)
  • Radio Relay Systems (AREA)
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Abstract

一种当以多模式无线传输/接收单元实行不同无线存取技术时，用于切换彼此相连之无线通信系统间无线存取技术之方法及系统。复数无线通信系统系被配置于重达涵盖区域，其中各无线通信系统实行不同无线存取技术，且彼此相连，使得由一无线通信系统提供之服务可经由其它无线通信系统来提供。各无线通信系统传送各无线通信系统涵盖区域中互连无线通信系统存在之指示。无线传输/接收单元接收有关互连无线通信系统之指示及信息。无线传输/接收单元接着使用该被接收信息启动对互连无线通信系统之交递，藉此无线传输/接收单元继续接收相同于无线传输/接收单元经由互连无线通信系统接收来自目前被连接无线通信系统之服务。

Description

以多模式无线传输/接收单元切换无线通信系统间无线存取技 术的方法及系统
技术领域
本发明系有关无线通信系统。更特别是，本发明系有关当以多模式无线传输/接收单元(WTRU)实行不同无线存取技术(RAT)时，切换彼此相连的无线通信系统间无线存取技术的方法及系统。
背景技术
通用移动电信系统(UMTS)及无线局域网络(WLAN)技术系被广泛用于目前无线通信系统中。因为通用移动电信系统及无线局域网络的涵盖区域通常被重迭，所以通用移动电信系统及无线局域网络的互连系被发展。互连无线局域网络(I-WLAN)为具有对通用移动电信系统核心网络的无线局域网络，所以通用移动电信系统提供的服务系可经由互连无线局域网络来转传。
目前，互连无线局域网络的网络选择系要求无线传输/接收单元使用其服务组识别号(SSIDs)来扫描可用无线局域网络系统。服务组识别号扫描可被动或主动达成。被动扫描时，无线传输/接收单元系观察来自各无线局域网络的信息广播，并依据信号强度来决定其可用性。主动扫描时，无线传输/接收单元系传送包含特定无线局域网络服务组识别号的探测要求，并等待来自该无线局域网络可用性的确认。
然而，这些技术并不提供可存取通用移动电信系统为基础服务的任何无线局域网络(服务组识别号)指示。若干解决方案系被设计包含于无线局域网络上传播频道上传播家用公众陆地移动网络(PLMN)识别。然而，因为无线局域网络服务组识别号并非唯一，所以该技术易被模仿(破坏性无线局域网络操作者可传播相同服务组识别号及公众陆地移动网络识别号)。
因此，为连接至通用移动电信系统为基础服务的通用移动电信系统为基础互连无线局域网络选择，系因无线传输/接收单元必须选择自及破坏性操作者使用类似服务组识别号来引导讯务朝向其网络减轻的大量无线局域网络(服务组识别号)而可能有问题。于是，需要一种提供对通用移动电信系统为基础服务的存取的无线局域网络(服务组识别号)指示。
发明内容
本发明为当以多模式无线传输/接收单元实行不同无线存取技术时，切换彼此相连的无线通信系统间无线存取技术的方法及系统。多个无线通信系统系被配置于重迭涵盖区域，其中各无线通信系统系实行不同无线存取技术，且被彼此相连使被一无线通信系统提供的服务可经由其它无线通信系统来提供。各无线通信系统系传送各无线通信系统涵盖区域中的互连无线通信系统存在的指示。无线传输/接收单元系接收有关互连无线通信系统的指示及信息。无线传输/接收单元接着使用该被接收信息启动对互连无线通信系统的交递，借此无线传输/接收单元继续接收相同于无线传输/接收单元经由互连无线通信系统接收来自目前被连接无线通信系统的服务。本发明有助于降低多模式无线传输/接收单元选择及认证互连无线通信系统所需时间。
附图说明
本发明可从以下较佳实施例说明及附图获得更详细了解，其中：
图1为依据本发明的无线通信系统方块图；
图2为依据本发明的切换无线存取技术的处理流程图；及
图3为依据本发明的无线传输/接收单元，通用移动电信系统陆地无线存取网络(UTRAN)及无线局域网络之间交递讯息以便从通用移动电信系统陆地无线存取网络交递至无线局域网络的信号传送图。
具体实施方式
此后，”无线传输/接收单元”名词系包含但不限于用户设备，移动台，固定或移动用户单元，呼叫器，或可操作于无线环境中的任何其它类型组件。此后，当被称为”基地台”及”存取点”名词者系包含但不限于B节点，地址控制器，或无线环境中的任何其它接介装置。
图1为依据本发明的无线通信系统100方块图。系统100系包含实行不同无线存取技术的至少两个不同类型无线通信网路110，120。例如图1所示，一类无线网络为较佳操作于第三代伙伴计划(3GPP)标准下的通用移动电信系统陆地无线存取网络(见通用移动电信系统陆地无线存取网络胞元110)，而另一类无线网络为较佳操作于IEEE 802.11标准下的无线局域网络120。为了说明本发明，仅一通用移动电信系统陆地无线存取网络胞元110被显示。然而，应注意熟练技术人士系熟知通用移动电信系统陆地无线存取网络通常包含多个胞元。
为了方便，本发明系参考通用移动电信系统陆地无线存取网络及无线局域网络来说明。然而，应注意熟练技术人士了解本发明可被应用于任何类型无线通信系统，且另外可具有两种以上不同类型无线通信系统。
无线通信系统110，120涵盖区域系彼此重迭。如在此使用的通用移动电信系统陆地无线存取网络-无线局域网络例子，无线局域网络120涵盖区域通常位于通用移动电信系统陆地无线存取网络胞元110较大涵盖区域内。无线局域网络120系被连接至通用移动电信系统陆地无线存取网络胞元110，使被提供于通用移动电信系统陆地无线存取网络胞元110内的服务可经由无线局域网络120被转传至多模式无线传输/接收单元102。因此，如上述，无线局域网络120亦被称为互连无线局域网络。被放置于重迭区域中的多模式无线传输/接收单元102可同时对两类无线通信系统，且可经由另一网络接收一网络所提供的服务。
依据本发明，通用移动电信系统陆地无线存取网络胞元110系传送存在任何互连无线局域网络的指示，或替代性被放置于通用移动电信系统陆地无线存取网络胞元110内的互连无线局域网络的服务组识别号列表至无线传输/接收单元102。该指示或服务组识别号表列可如预期地被传送。例如，其可经由传播控制频道(BCCH)传播或经由专用控制频道(DCCH)传送。其中系统100系被配置于传播控制频道上传送该指示或列表，当连接至通用移动电信系统陆地无线存取网络胞元110或建立无线承载时，无线传输/接收单元可能但不需提供其无线局域网络容量(也就是无论其是否可操作于无线局域网络)。
依据第一实施例，仅通用移动电信系统陆地无线存取网络胞元110内的任何互连无线局域网络存在的指示被传送。如上述，该指示可如预期般被传送，但较佳被传送于该胞元110的传播控制频道上或专用控制频道上。无线传输/接收单元102接收该指示，且若系统间交递的预定准则(也就是将无线传输/接收单元102从通用移动电信系统陆地无线存取网络胞元110交递至无线局域网络120的预定准则)被满足，则无线传输/接收单元102系从通用移动电信系统陆地无线存取网络胞元110要求服务组识别号表列。当然，应了解预定准则可为任何类型准则，且评估是否实际执行系统间交递系可借由无线传输/接收单元102或交递可发生自的网络的任何网络组件，其于此例中为通用移动电信系统陆地无线存取网络来评估。一旦无线传输/接收单元102接收服务组识别号表列，则服务组识别号系被被动或主动使用来扫描，连结及认证互连无线局域网络120内的适当存取点。此方案确保无线传输/接收单元102可存取提供对通用移动电信系统陆地无线存取网络胞元110及其第三代伙伴计划为基础服务的连接。系统间交递准则被满足且具有互连无线局域网络120内的适当存取点来交递者，无线传输/接收单元102系被交递至互连无线局域网络120且开始操作于其间。
可替代是，无线传输/接收单元102可于评估系统间交递准则之前要求服务组识别号表列，以确认执行该评估之前是否具有适用存取点。
依据第二实施例，系统100系如上述作操作，但除了第一传送通用移动电信系统陆地无线存取网络胞元110内存在任何互连无线局域网络的指示外，此实施例中，通用移动电信系统陆地无线存取网络胞元110仅传送服务组识别号表列。此可提供服务组识别号表列不太高的加强效能。是否实行该第一或第二实施例系属操作者喜好。
图2为依据本发明的切换无线存取技术的处理200流程图。多个无线通信系统系被配置重迭涵盖区域。各无线通信系统系实行不同无线存取技术，且被配置使被一无线通信系统提供的服务可经由其它无线通信系统来提供。
各无线通信系统系传送互连无线通信系统存在的指示，选择性与实行不同无线存取技术于各无线通信系统涵盖区域内的替代无线通信系统的信息(包含识别号，频率等)(步骤202)。该指示及/或信息可被传播至无线传输/接收单元，或可经由专用频道被传送给无线传输/接收单元。无线传输/接收单元可经由目前被连接无线通信系统(也就是无线传输/接收单元目前被连接的无线通信系统)来接收该指示及/或信息(步骤204)。
可替代是，该指示及/或信息可被传送响应该信息的要求讯息或来自该无线传输/接收单元的功能报告。响应时，目前被连接的无线通信系统系传送互连无线通信系统可用性指示及/或有关无线通信系统的指示至无线传输/接收单元。该例中，该指示及/或信息可经由专用控制频道被传送至无线传输/接收单元。
接收该指示及/或信息之后，系决定是否启动对互连无线通信系统的交递(步骤206)。如上述，此决定可于网络或无线传输/接收单元处被达成，且可以如预期任何预定准则为基础。该交递可借由用户的要求来启动或以服务要求为基础被独立启动。无线传输/接收单元可于其显示屏幕上显示互连无线通信系统的可用性或提供警告相同用户的警报。若决定将无线传输/接收单元交递至互连无线通信系统且仅若该指示被传送，则无线传输/接收单元要求有关互连无线通信系统的信息并从该目前被连接无线通信系统接收它(步骤208)。若该信息被与该指示一起传送或无任何指示被自动传送，则步骤208被跳过。无线传输/接收单元接着使用该被接收信息启动交递程序(步骤210)。
如在此被使用的通用移动电信系统陆地无线存取网络-无线局域网络例的情况中，该信息可为互连无线局域网络的服务组识别号，且选择性可进一步包含对应公众陆地移动网络识别号及各服务组识别号的对应坐标(也就是位置)。无线传输/接收单元可于接收互连无线局域网络的服务组识别号之后启动主动或被动扫描被辨识无线局域网络。该无线局域网络的扫描可被限制为该被接收服务组识别号识别的无线局域网络。
与特定无线局域网络存取点的连结系可以频道品质量测为基础。若来自所有无线局域网络的频道品质量测系位于预定门坎下，则起始通用移动电信系统陆地无线存取网络连接系被维持。若可接受无线局域网络存取点被找到，则通用移动电信系统陆地无线存取网络可被通知胞元改变于胞元改变的专用频道上。连接安全可借由如有线等位私密(WEP)信息的信息来致动。无线传输/接收单元继续扫描无线局域网络连结及取消连结的共同服务组识别号存取点。若可接受存取点未被找到，则无线传输/接收单元可扫描被已知服务组识别号辨识的替代无线局域网络，或回复至通用移动电信系统陆地无线存取网络连接。此例中，无线存取技术胞元间改变指示可被传送。交递无线存取技术的选择可以预定门坎内的品质量测为基础自动或被用户输入手动控制。无线存取技术胞元改变之后，无线传输/接收单元继续接收相同于无线传输/接收单元经由替代无线通信系统接收来自目前被连接无线通信系统的服务。
图3为依据本发明的无线传输/接收单元102，通用移动电信系统陆地无线存取网络胞元110及无线局域网络120间的讯息交递用于从通用移动电信系统陆地无线存取网络胞元110至无线局域网络120的交递的处理200例的信号传送图。通用移动电信系统陆地无线存取网络胞元110系传送任何互连无线局域网络可用性的指示(及/或选择性与可用无线局域网络的服务组识别号表列一起)(步骤302)。该传输可借由来自指示无线传输/接收单元102的无线局域网络功能的无线传输/接收单元102的报告来启动。无线传输/接收单元102系接收互连无线局域网络可用指示及/或服务组识别号表列(步骤304)。仅指示被传送的例中，无线传输/接收单元102系传送无线局域网络的服务组识别号要求(步骤306)。服务组识别号表列被与指示一起被传送或表列不与任何指示被单独传送的例中，步骤306-310系被删除。接收要求时，通用移动电信系统陆地无线存取网络胞元110系检索服务组识别号信息(步骤308)。通用移动电信系统陆地无线存取网络胞元110系传送无线局域网络服务组识别号表列及选择性其相关位置及公众陆地移动网络识别号(步骤310)。接收服务组识别号表列之后，无线传输/接收单元102系将其储存于内存中，并使用该表列主动或被动扫描适当存取点(步骤312)。若无线传输/接收单元102位于无线局域网络涵盖范围内，则无线传输/接收单元102启动互连无线局域网络选择(步骤312)。无线传输/接收单元102系以被选择无线局域网络启动无线局域网络服务(步骤314)。如以下更详细解释(步骤316)，无线局域网络120可认证无线传输/接收单元102，若需要通常可视被实行的互连计划类型来分配新因特网协议地址。认证被完成于步骤318之后，对无线局域网络的存取系针对无线传输/接收单元102被保证(步骤320)。
如上述，不同互连计划可被用于连接互连无线局域网络至通用移动电信系统陆地无线存取网络。例如，目前无线通信标准下，互连无线局域网络可经由核心网络(如封包约定网关(PDG))或经由当作管线的通用移动电信系统陆地无线存取网络而被连接至第三代伙伴计划系统。后者例中，并无新因特网协议地址被非配于互连无线局域网络再选择例中(从第三代伙伴计划系统交递至互连无线局域网络)。先前例中(也就是封包约定网关为基础互连)，新程序系被用来分配因特网协议地址至操作于互连无线局域网络中的无线传输/接收单元。这些程序系不同于这些被用于第三代伙伴计划系统中者，且可能导致分配新因特网协议地址给无线传输/接收单元。
虽然图中组件被描绘为独立组件，但这些组件亦可被实施为单集成电路(IC)，如特定应用集成电路(ASIC)，多重集成电路，分离组件或其组合。虽然本发明特性及组件已被说明于特定组合中的较佳实施例中，但各特色或组件均可无较佳实施例的其它特色或组件而被单独使用，或具有或无本发明其它特色及组件的各种组合中。再者，本发明可被实行于任何类型无线通信系统中。

Claims (37)

1.一种于多个无线通信系统被配置具有重迭涵盖区域的区域中以被配置支持一个以上无线存取技术的多模式无线传输/接收单元切换该无线通信系统间无线存取技术的方法，其中各无线通信系统实行不同无线存取技术且得由配置使被一无线通信系统所提供的服务可经由另一无线通信系统提供，该方法包含：
各无线通信系统传送实行各无线通信系统涵盖区域中可用的不同无线存取技术的互连无线通信系统存在的指示；
该无线传输/接收单元系经由一目前连接的无线通信系统来接收该指示；
该无线传输/接收单元接收有关该互连无线通信系统的信息，决定交递该无线传输/接收单元至该互连无线通信系统的；及
该无线传输/接收单元使用该接收信息来启动至该互连无线通信系统的交递，
借此该无线传输/接收单元继续接收相同于该无线传输/接收单元经由该互连无线通信系统从该目前所连接的无线通信系统接收的服务。
2.如权利要求1所述的方法，其特征在于将该指示传播至该无线传输/接收单元。
3.如权利要求1所述的方法，其特征在于将该指示经由用于该无线传输/接收单元的专用控制频道传送至该无线传输/接收单元。
4.如权利要求3所述的方法，其特征在于该指示是响应一详列该无线传输/接收单元性能的报告来支持该儿进行传送以互连无线通信系统的该无线存取技术。
5.如权利要求4所述的方法，其特征在于有关该互连无线通信系统的信息是与该指示一起传送。
6.如权利要求1所述的方法，其特征在于该无线通信系统为一无线局域网络及一通用移动电信系统陆地无线存取网络。
7.如权利要求6所述的方法，其特征在于该无线传输/接收单元建立与该通用移动电信系统陆地无线存取网络的连接，并接收有关通用移动电信系统陆地无线存取网络胞元涵盖内的无线局域网络可用性的指示。
8.如权利要求7所述的方法，其特征在于该指示包含可用于该通用移动电信系统陆地无线存取网络胞元的无线局域网络的服务组本体。
9.如权利要求7所述的方法，其特征在于该信息包含该无线局域网络位置及公众陆地移动网络本体。
10.如权利要求7所述的方法，其特征在于与该无线局域网络的连结是以频道品质量测为基础。
11.如权利要求7所述的方法，其特征在于连接安全借由有线等位私密信息来致动。
12.如权利要求1所述的方法，其特征在于是自动启动该交递。
13.如权利要求1所述的方法，其特征在于该互连无线通信系统的可用性系被警告至该用户。
14.如权利要求13所述的方法，其特征在于该交递是于用户要求时启动。
15.如权利要求1所述的方法，其特征在于新因特网协议地址是于交递后被提供。
16.一种无线通信系统间交递无线存取技术的系统，包含：
多个无线通信系统，各无线通信系统实行不同无线存取技术且具有至少部分重迭涵盖区域，各无线通信系统包含：
传送无线通信系统重迭涵盖区域中可用互连无线通信系统存在的指示的装置，其中该系统被配置使得由一无线通信系统所提供的服务可经由另一无线通信系统提供；及
传送有关该互连无线通信系统信息的装置；及
一无线传输/接收单元，用以支持多个无线存取技术，其包含：
用以经由一目前连接的无线通信系统接收该指示的装置；
用以接收有关该互连无线通信系统信息的装置，其中该无线传输/接收单元将被交递至该互连无线通信系统；及
用以使用该接收信息来启动对该互连无线通信系统的交递的装置；
借此该无线传输/接收单元继续接收相同于该无线传输/接收单元经由该互连无线通信系统从该目前连接的无线通信系统接收的服务。
17.如权利要求16所述的系统，其特征在于将该指示传播至该无线传输/接收单元。
18.如权利要求16所述的系统，其特征在于将该指示经由用于该无线传输/接收单元的专用频道传送至该无线传输/接收单元。
19.如权利要求18所述的系统，其特征在于该指示是响应一支持该互连无线通信系统的该无线存取技术的该无线传输/接收单元性能报告而传送。
20.如权利要求18所述的系统，其特征在于有关该互连无线通信系统的信息与该指示一起传送。
21.如权利要求16所述的系统，其特征在于该无线通信系统为一无线局域网络及一通用移动电信系统陆地无线存取网络。
22.如权利要求16所述的系统，其特征在于该无线传输/接收单元建立与该通用移动电信系统陆地无线存取网络的连接，并经由该通用移动电信系统陆地无线存取网络接收有关无线局域网络可用性的指示。
23.如权利要求22所述的系统，其特征在于该指示包含可用于该通用移动电信系统陆地无线存取网络中的无线局域网络的服务组本体。
24.如权利要求22所述的系统，其特征在于该信息包含该无线局域网络位置及公众陆地移动网络本体。
25.如权利要求22所述的系统，其特征在于与该无线局域网络的连结是以频道品质量测为基础。
26.如权利要求22所述的系统，其特征在于连接安全借由有线等位私密信息来致动。
27.如权利要求16所述的系统，其特征在于是自动启动该交递。
28.如权利要求16所述的该系统，其特征在于以指示该互连无线通信系统的可用性来提供对该用户的警告。
29.如权利要求28所述的系统，其特征在于该交递是于用户要求时启动。
30.如权利要求16所述的系统，其特征在于新因特网协议地址是于交递后被提供。
31.一种于多个无线通信系统被配置具有重迭涵盖区域的区域中以被配置支持一个以上无线存取技术的多模式无线传输/接收单元切换该无线通信系统间无线存取技术的方法，其中各无线通信系统实行不同无线存取技术且得由配置使被一无线通信系统所提供的服务可经由另一无线通信系统提供，包含：
各无线通信系统传送有关互连无线通信系统实行各无线通信系统涵盖区域中可用的不同无线存取技术的信息；
该无线传输/接收单元经由一目前连接的无线通信系统来接收该信息；
该无线传输/接收单元使用该信息来启动对该互连无线通信系统的交递，
借此该无线传输/接收单元继续接收相同于该无线传输/接收单元经由该互连无线通信系统从该目前连接的无线通信系统接收的服务。
32.如权利要求31所述的方法，其特征在于该被传送有关互连无线通信系统信息为服务组识别号表列。
33.如权利要求32所述的方法，其特征在于该互连无线通信系统信息为无线局域网络。
34.一种无线通信系统间交递无线存取技术的系统，包含：
多个无线通信系统，各无线通信系统实行不同无线存取技术且具有至少部分重迭涵盖区域，各无线通信系统包含：
用以传送有关无线通信系统重迭涵盖区域中可用互连无线通信系统信息的装置，其特征在于该系统系被配置为使得由一无线通信系统提供的服务可经由另一无线通信系统提供；及
一无线传输/接收单元，用以支持多个无线存取技术，包含：
用以经由一目前连接的无线通信系统接收该指示的装置；及
用以使用该接收信息来启动对该互连无线通信系统的交递的装置，
借此该无线传输/接收单元继续接收相同于该无线传输/接收单元经由该互连无线通信系统从该目前连接的无线通信系统接收的服务。
35.如权利要求34所述的系统，其特征在于该被传送有关互连无线通信系统信息为服务组识别号表列。
36.如权利要求35所述的系统，其特征在于该互连无线通信系统信息为无线局域网络。
37.如权利要求34所述的系统，其特征在于该无线传输/接收单元仅接收决定该无线传输/接收单元将被交递至该互连无线通信系统的该信息。
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