CN101371503B - 用于在广域网与局域对等网络之间共享带宽的方法和装置 - Google Patents
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Abstract
描述了有助于在广域网与局域对等网络之间共享带宽的系统和方法。对等网络可使用与用在广域网中的空中接口技术相类似或不同的空中接口技术。此外,广域网和局域对等网络可使用不同的参数组。例如,如果广域网和局域对等网络使用基于OFDM的空中接口技术,则两个网络的诸如频调间距、码元时间、循环前缀等参数可以变化。另外,对等参数可以是广域网的参数的函数。
Description
相关申请的交叉引用
本申请主张在2006年1月11日提交的题为“METHODS ANDAPPARATUS FOR FACILITATING IDENTIFICATION,SYNCHRONIZATION OR ACQUISITION USING BEACON SIGNALS(用于使用信标信号帮助识别、同步、或捕获的方法和装置)”的美国临时专利申请S/N.60/758,010;2006年1月11日提交的题为“METHODS ANDAPPARATUS FOR USING BEACON SIGNALS FOR IDENTIFICATION,SYNCHRONIZATION OR ACQUISITION IN AN AD HOC WIRELESSNETWORK(用于在自组织无线网络中使用信标信号进行识别、同步或捕获的方法和装置)”的美国临时专利申请S/N.60/758,011;2006年1月11日提交的题为“METHODS AND APPARATUS FOR USING BEACONSIGNALS IN A COGNITIVE RADIO NETWORK(用于在认知无线电网络中使用信标信号的方法和装置)”的美国临时专利申请S/N.60/758,012;2006年9月15日申请的名称为“POWER ALLOCATION SCHEME(功率分配方案)”的美国临时专利申请S/N.60/845,052;2006年9月15日提交的题为“BEACONS IN A MIXED WIRELESS COMMUNICATION SYSTEM(混合无线通信系统中的信标)”的美国临时专利申请S/N.60/845,051;2006年10月27日提交的题为“BEACONS IN A MIXED COMMUNICATIONSYSTEM(混合通信系统中的信标)”的美国临时专利申请S/N.60/863304的权益。前述申请通过引用全文结合于此。
背景
I.领域
下面的描述一般地涉及无线通信,尤其涉及在公共无线频谱内经由广域网和局域对等网络支持通信。
II.背景
背景无线通信系统被广泛布置用来提供各种类型的通信,例如,语音和/或数据可以通过这种无线通信系统来提供。典型的无线通信系统——或网络——可以为多个用户提供对一个或多个共享资源的接入。例如,系统可以使用各种多址接入技术,例如频分复用(FDM)、时分复用(TDM)、码分复用(CDM)、正交频分复用(OFDM)等。
普通的无线通信系统采用提供覆盖区的一个或多个基站。典型的基站可以传送广播、多播和/或单播服务的多个数据流,其中数据流可与无线终端感兴趣的接收无关数据流。在这种基站的覆盖区内的无线终端可以被用来接收由复合流携带的一个、一个以上、或所有的数据流。类似地,无线终端可以将数据传送到基站或另一无线终端。
无线通信系统影响用于传送数据的无线频谱的各个部分。然而,无线频谱是昂贵且宝贵的资源。例如,希望在一部分无线频谱(例如在许可频谱内)上运营无线通信系统的公司可能须承担高额费用。进一步地,传统技术通常也不能提供对无线频谱的有效利用。根据一般的例证,当无线频谱的各个部分被用于广域网(例如,蜂窝基础设施网络)时,在广域网实施于其上的频谱的大量子集有时在给定的地理位置或在给定的时间间隔内不被使用。
概述
下面给出了一个或多个实施例的简化概述,以便提供对这些实施例的基本理解。本概述不是所有预期实施例的详尽综述,目的既不在于识别所有实施例的主要或关键性要素也不在于界定任何或所有实施例的范围。其唯一目的在于以简化的形式给出一个或更多个实施例的一些概念,作为后面所给出的更详细描述的前序。
根据一个或多个实施例及其相应的公开,结合帮助在广域网与局域对等网络之间共享带宽描述了本发明的各个方面。局域对等网络可使用与广域网所使用的空中接口技术相类似或不同的空中接口技术。例如,广域网可以使用基于OFDM的空中接口技术(例如,3GPP LTE、WiMax、Flash(闪)-OFDM、...)、基于CDMA的空中接口技术(例如,CDMA-2000、EV-DO、UMTS宽带CDMA、HSPA、...)、或基于TDMA的空中接口技术(例如,GSM、GPRS、EDGE、...),而局域对等网络可以使用基于OFDM的空中接口技术。此外,广域网和局域对等网络可以使用不同的参数集。例如,假设广域网和局域对等网络都使用基于OFDM的空中接口技术。因此,两种网络中诸如频调间距、码元时间、循环前缀等之类的物理层参数可以大不相同。进一步地,对等参数可以是在广域网中所使用的参数的函数,以使得终端可以首先标识空中接口技术和/或估计在广域网中使用的参数,然后导出要在局域对等网络中使用的参数。
根据相关的方面,在此描述一种有助于经由共享频谱通信的方法。该方法包括在无线频谱中对广域网使用第一参数集。此外,该方法可包括在相同的无线频谱中对局域对等网络使用第二参数集。
另一方面涉及无线通信装置。该无线通信装置可包括保存与标识广域网以及根据所标识的广域网访问要用于对等网络的参数数据相关的指令的存储器。此外,该无线通信装置可包括耦合于所述存储器的的处理器,后者被配置成执行保存在存储器中的指令。
又一方面涉及实现通过广域网和对等网络中进行通信的无线通信装置。该无线通信装置可包括用于标识广域网的装置;以及用于访问根据所标识的广域网访问要用于对等网络的参数的装置。
再一方面涉及一种其上存储有机器可读指令的机器可读介质,这些指令用于对广域网使用第一参数集,以及对如同广域网那样使用公共无线频谱的局域对等网络使用第二参数集。
根据另一方面,一种无线通信系统中的装置可包括:处理器,其中该处理器可被配置成标识广域网、以及基于广域网的身份获得用于对等网络的参数组。
为了完成前述和相关目标,所述一个或更多个实施例包括此后完整描述并在权利要求书中特别指出的特征。下面的描述和附图详细阐述了这一个或更多个实施例的特定示例性方面。但是,这些方面也仅仅是指示了其中可以采用各种实施例的原理的各种方式中的少数几种,并且所描述的实施例旨在包括所有这些方面和他们的等效方案。
附图简述
图1是根据在此所述各个方面的无线通信系统的图示。
图2是使得能够在公共无线频谱内经由不同网络进行通信的示例系统的图示。
图3是根据各种方面的示例频谱的图示。
图4是根据在此所描述的各个方面的可被传递的示例码元的图示。
图5是使用共享频谱以实现经由广域网和对等网络进行通信的示例系统的图示。
图6是有助于在广域网与局域对等网络之间共享带宽的示例方法的图示。
图7是有助于标识要用于经由局域对等网络进行通信的参数的示例方法的图示。
图8是有助于计算对等网络的参数的示例方法的图示。
图9是根据本发明各个方面实现的包括多个蜂窝小区的示例通信系统的图示。
图10是根据本发明各个方面的示例基站的图示。
图11是根据在此所描述的各个方面实现的示例无线终端(例如,移动设备、端节点、...)的图示。
图12是实现通过广域网和局域对等网络通信的示例系统的图示。
详细描述
现在参考附图描述各种实施例,其中相似的附图标记贯穿始终地被用于指代相似的元件。在下面的描述中,为了进行解释,陈述许多的具体细节,以便提供对一个或更多个实施例的透彻理解。但是,这些实施例在没有这些具体细节的情况下也可以实施是显而易见的。在其他实例中,众所周知的结构和设备被以框图的形式表示,以帮助描述一个或更多个实施例。
在本中所用的术语“组件”、“模块”、“系统”等意在指代计算机相关实体,或者是硬件、固件、硬件软件的组合、软件、或者是执行中的软件。例如,“组件”可以是但不限于是在处理器上运行的进程、处理器、对象、可执行程序、执行线程、程序、和/或计算机。作为例示,运行在计算设备上的应用程序和计算设备都可以是组件。一个或多个组件可以驻留在执行的进程和/或执行的线程中,并且组件可以位于一台计算机内和/或被分布在两台或更多台计算机之间。此外,这些组件可以从其上存储着各种数据结构的各种计算机可读介质执行。这些组件可以通过本地和/或远程进程来通信,诸如根据具有一个或多个数据分组(例如,来自一个组件的数据,该组件借助于此信号与本地系统、分布式系统中的另一组件、和/或跨诸如因特网等的网络与其它系统进行交互)的信号来通信那样。此外,在此结合无线终端描述了各种实施例。无线终端也可以称作系统、订户单元、订户站、移动站、移动台、移动设备、远程站、远程终端、接入终端、用户终端、终端、无线通信设备、用户代理、用户设备、或用户装备(UE)。无线终端可以是蜂窝电话、无绳电话、会话发起协议(SIP)电话、无线本地环路(WLL)站、个人数字助理(PDA)、具有无线连接能力的手持式设备、计算设备、或连接到无线调制解调器的其他处理设备。此外,在此结合基站描述了各个实施例。基站可以用来与无线终端进行通信,并且也可以被称作接入点、节点B、或某个其他技术术语。
此外,在此所描述的各个方面或特征使用标准编程和/或工程技术来被实现为方法、装置或制品。在此所使用的术语“制品”旨在涵盖可从任何计算机可读设备、载波或媒介访问的计算机程序。例如,计算机可读介质可包括但不限于磁性存储设备(例如,硬盘、软盘、磁条等)、光盘(例如,压缩盘(CD)、数字多功能盘(DVD)等)、智能卡、和闪存设备(例如,EPROM、记忆卡、记忆棒、钥匙驱动器等)。另外,在此所描述的各种存储介质可以代表了用于存储信息的一个或多个设备和/或其他机器可读介质。术语“机器可读介质”可以包括但不限于:无线信道和各种能够存储、包含和/或携带指令和/或数据的各种其他介质。
现在参考图1,无线通信系统100是根据在此所给出的各种实施例例示的。系统100可以包括基站102(例如,接入点)和/或在一个或多个扇区中于彼此之间和/或对一个或多个无线终端104接收、传送、中继例如无线通信信号的任意数量的不同基站(未示出)。基站102可以包括各自又包含多个与信号传输和接收有关的元件(例如,处理器、调制器、复用器、解调器、分用器、天线、...)的发射链和接收机链,如本领域技术人员将理解的。无线终端104例如可以是蜂窝电话、智能电话、膝上型笔记本、手持式通信设备、手持式计算设备、卫星无线电、全球定位系统、PDA、和/或适合通过无线通信系统100通信的任何其他合适的设备。
系统100可以支持用于在基站120和/或无线终端104之间通信的各种类型的网络。例如,广域网(WAN)(例如,蜂窝网络)会影响系统100。对于此示例,进一步而言,无线终端104可以通过使用广域基础设施网络向基站102(和/或不同基站)传递数据和/或从其获得数据。根据另一示例,局域对等网络(P2P)网络可以由系统100支持;这样,无线终端104(例如,对等设备)可以经由对等架构彼此通信,其中无线终端104可直接向另一无线终端104发送信号而无需通过基站102。
使用不同类型网络实现的通信可以在公共无线频谱上执行;因此,带宽经由不同类型网络共享以传递数据。例如,无线频谱的共享部分可以主要由广域网使用。此外,对等通信可以在无线频谱的共享部分不被广域网使用时机会性地通过此共享部分来进行。因此,与频谱利用率相关联的低效率可因为与广域网相关联的未使用带宽可被用于局域对等通信而得以减轻。替换或补充地,可以使用干扰管理或缓和技术以便频谱的共享部分可以同时由广域网和局域对等通信使用,从而增加带宽的频谱重用效率。
系统100支持的不同类型的网络可以结合传送数据使用诸如频调间距、码元时间、和循环前缀等不同参数。此外,例如,结合第一类型网络(例如,对等网络,广域网,...)使用的参数可以是根据第二类型网络(例如广域网,对等网络,....)使用的参数而定的。在广域网中使用的空中接口技术可被设计成在此类环境中操作。例如,空中接口可以是基于正交频分复用(OFDM)技术的。因此,诸如频调间距、码元时间和循环前缀的系统参数可以被选择成使得空中接口对于高移动性和长延迟扩展而言是稳健的。此外,对等通信的操作环境可以是不同的,因此移动性可能较低和延迟扩展可能较短。此外,对等设备可以工作在使其不能同时接收和发射信号的半双工模式中(例如,在对等架构中)。如此,对等网络参数的选择可不同于广域网的参数,即使这些网络工作在相同频谱。例如,在对等通信中,频调间距可以更大以实现缩短的码元时间,从而允许对等设备在接收和发射模式之间更快地转换。另一方面,在对等通信中,频调间距可能由于更低的移动性而更小,从而使得码元时间较长并降低了由于循环前缀而导致的相对开销。另外,所述循环前缀可以是较短的,以便减少对等网络中的开销。在对等网络中系统参数值可以预定的方式从广域网中的系统参数值导出以使得对等设备可基于广域网中的信号同步自身以及对等通信。因此,所述参数可以是不同的。此外,在对等网络中使用的空中接口技术也可以不同于广域网中使用的技术。例如,广域网可以使用基于CDMA的空中接口技术(例如,CDMA-2000、EV-DO、UMTS宽带CDMA、HSPA、...)或基于TDMA的空中接口技术(例如,GSM、GPRS、EDGE、...),而局域对等网络可以使用基于OFDM的空中接口技术。
现在转向图2,它示出了实现在公共无线频谱内通过不同网络通信的系统200。系统200包括无线终端202,该无线终端进一步包括WAN通信器204和对等通信器206。WAN通信器204使得终端202能够在使用第一参数集(例如,WAN参数)的广域网上发射和/或接收数据。根据一个示例,WAN通信器204可以有助于通过任何类型的广域网(例如,长期演进(LTE)、第三代合作伙伴计划(3GPP)、第三代合作伙伴计划2(3GPP2)、通用移动电信系统(UMTS)、WiMax,Flash-OFDM、...)进行通信。作为示例,WAN通信器204可实现无线终端202和基站(未示出)之间的通信。
此外,对等通信器206实现通过具有第二参数集(例如,P2P参数)的对等网络发送和/或获得信息(例如,向对等设备传送数据和/或从其接收数据)。而且,由WAN通信器204用于在广域网上通信的频谱(例如,带宽)可以与对等通信器206共享以在对等网络上通信;这样,与可使用各自采用无线频谱不同部分的多个网络的传统技术不同,所要求权利的主题使用公共带宽(例如,相同的频谱)来执行与不同网络架构的通信。作为示例,对等通信器206实现无线终端202和与另一无线终端(未示出)之间的直接通信。
由WAN通信器204使用的WAN参数可不同于由对等通信器206使用的P2P参数。例如,假设WAN和P2P网络两者皆使用基于OFDM空中接口技术,在此情况下,WAN参数和P2P参数可关于频调间距、码元时间、循环前缀等。此外,结合每种类型网络使用的参数可以被选择成使经由此网络的通信最优化。作为示例,频调间距可基于移动性来确定,因为移动性会引起导致频移的多普勒效应。因此,由发射机产生的特定频调的频率在该频调由接收机获得时会偏移到不同的频率上(例如,基于所述多普勒效应)。因此,频调间距可被选择远大于预期的多普勒效应。根据另一示例,特定类型网络的循环前缀可以确定为比预期的延迟扩展大,其可因变于网络覆盖区(例如,与传播信号的网络相关联的地理区域)。延迟扩展与由于经由发射机和接收机之间不同路径传播(例如,多径)所导致的在稍微不同的时间到达接收机的多个副本的信号相关。这样,延迟扩展因变于其上发生传播的区域。
参看图3,它示出根据各个方面的示例频谱300。如所示,水平轴302代表频率。特定载波频率304的可用带宽总量可被分割成K个等距频调(例如,具有频调间距Δ),其中K可以任意整数。这些频调可以从0到K-1进行索引。例如,例示了频调0306、频调1308、频调2310和频调K-1312;然而,所要求权利的主题并限于此。
频调间距Δ可以是与其上发生通信的网络类型相对应的唯一参数;因此,与局域对等网络相比,可对广域网络使用不同的频调间距。此外,每种特定类型的广域网可与相应的频调间距相关联(例如,Flash-OFDM可以使用11.25kHz的频调间距,3GPP2可以使用9.6kHz的频调间距,...)。此外,局域对等网络的频调间距可因变于与共享公共带宽的的特定类型的广域网相关联的频调间距。(例如,局域对等网络可以在广域网所覆盖地理区域的至少一部分内执行)。因此,根据一示例,如果局域对等网络与在给定频谱内3GPP2共存,则对等通信的参数(例如,包括频调间距)可以是3GPP2的参数(例如频调间距)的函数。
频调间距可依赖于移动性。例如,移动会引起多普勒效应,这产生频移。因此,频调0 306可用相应的频率发射;然而,当在接收机处获得时,频调0 306可能已偏移至不同的频率。频调间距可被选择成远大于预期多普勒偏移。根据一个示例,频调间距可大约比预期多普勒大100倍。因此,如果预期多普勒偏移是100Hz(例如,对于WAN),则频调间距可以是10kHz的级别。然而,可以理解,所要求权利的主题并不限于上述示例。此外,对于局域对等环境来说,与广域网相比,移动性可能较低,因此,多普勒可能更小。因此,可对局域对等网络使用较小的频调间距。
转向图4,它示出了根据在此所述的各个方面的可被传递的示例码元400。如图所示,水平轴402代表时间。码元400可以是正弦曲线(例如,在OFDM环境中)。码400——TSYM——包括循环前缀404和可携带数据的部分406(也称作IFFT窗口)。部分406的长度通常等于,其中Δ是频调间距。循环前缀40——TCP——的时间持续时长可比预期延迟扩展大。此外,TCP和TSYM可以是为对等网络(例如,不同状态的不同值)和广域网选择的参数。
多径传播会引起延迟扩展。例如,单个发射的信号可以通过两个或多个路径到达接收机。根据该示例,信号的副本可在与不同路径相关联的不同时间获得。延迟扩展可与信号特定网络内传播通过的区域的大小相关。根据一例示,在广域网(例如,其可与较大地理区相关联)中,延迟扩展可以是大约2到3微秒,循环前缀(例如,TCP)可以是大约10微秒。此外,对于局域对等网络,延迟扩展可较小(例如,由于与较小的地理区域相关联);例如,延迟扩展可以在纳秒级的。因此,与局域对等网络相关联的循环前缀(例如TCP)也可以为1微秒级的。
循环前缀404是码元400内的开销。例如,在广域网中,码400的10%可以是开销(例如TCP可以是10微秒而TSYM可以是100微秒)。此外,对于局域网络来说,频调间距(Δ)与广域网的频调间距相比更小,因此,可增大FFT窗口(例如TSYM),这由此降低了开销。
开销的降低(例如,通过增加码元时间和减小频调间距)可对照下述局域对等网络中的另一设计约束来平衡。对等设备可能缺乏在对等网络中同时传送和接收的能力。例如,对等设备发现可以这样的方式来执行:对等设备可在随机时间位置传送特征(signature)信号。因此,当对等设备中的一者传送其特征信号时,其可能缺乏接收由不同对等设备传送的特征信号的能力。因而,随着码元时间TSYM增加,不同对等设备将并发地传送码元的概率也增加,从而使得一个对等设备更可能错过由另一对等设备传送的信号;因此,对等网络的码元时间(例如,在对等设备发现期间使用的)可比广域网所用的短N倍,其中N可以是任意实数(例如,N可以为8),从而降低不同对等设备的传输重叠的概率。
现在转向图5,它示出了使用共享频谱实现经由广域网和对等网络的通信的系统500。系统500包括无线终端202,后者可进一步包括WAN通信器204和对等通信器206,它们分别实现经由广域网和对等网络传送和/或接收数据。WAN通信器204使得无线终端202能够经由任何类型的广域网进行通信(例如,3GPP LTE、3GPP2 EV-DO、CDMA-2000、UMTSW-CDMA、GSM、EDGE、WiMax、Flash-OFDM、...)。例如,WAN通信器204可以使用正交频分复用-时分双工(OFDM-TDD)模式来通过广域网获得和/或传送数据(例如,上行链路话务在第一组时间、下行链路话务在不同组的时间、...)。此外,对等通信器204使得无线终端202能够与不同对等设备(例如,不同无线终端(未示出))进行通信。根据一个示例,当使对等通信器206在对等网络内工作时,无线终端202可能不能并发地传送和接收来自对等设备的信号。对该示例,进一步而言,P2P参数(例如,短码元时间)可以被用来使不同对等设备在与无线终端202相比基本上相同的时间传送的概率最小化;因此,无线终端202就可能不会错过这种传输自不同对等设备的数据。
对等通信器206还可包括WAN标识器502和P2P参数选择器504。WAN标识器502可以确定频谱带宽是否供无线终端202用于对等通信。此外,WAN标识器502可以检测当前使用频谱带宽的广域网的类型,例如WAN中使用的特定空中接口技术。根据该示例,WAN标识器502可以确定广域网是LTE、3GPP、3GPP2、UMTS、WiMax、Flash-OFDM等类型的广域网中的一种。作为另一个示例,WAN标识器502还可检测与可用广域网有关的系统参数(例如,WAN参数)。虽然WAN标识器502被描述为包括在对等通信器206中,但是可构想WAN通信器204可以包括WAN标识器502和/或WAN标识器502可与WAN通信器204和对等通信器206分开。P2P参数选择器504可根据所标识的由广域网所用的空中接口技术(例如,由WAN标识器502确定的可用广域网的类型)来访问将被用于对等网络的参数数据(例如,P2P参数)和相关联的系统参数。P2P参数此后可以被用来在对等网络上传送和/或接收数据。
此外,无线终端202可以包括存储器506和处理器508。存储器506可以保存用于指定P2P参数和/或相应于各种类型的广域网的WAN参数。此外,存储器506保存与确定广域网的身份、检测与广域网相关联的参数、标识和/或获取与对等网络一起使用的参数等相关的指令。另外,处理器508可以执行在此描述的指令和/或功能。
根据一示例,无线终端202可以进入广域网。WAN标识器502可以确定广域网的身份。补充地或替换地,WAN标识器502可以检测有关广域网的信息(例如,WAN参数)。此外,P2P参数选择器504可以使用在存储器506中保存的查找表来选择P2P参数(例如,频调间距、码元时间、循环前缀,...)来用于通过局域对等网络通信。例如,存储在存储器506中的查找表可指定与所标识的广域网的类型关联的一个或多个P2P参数值。因而,基于广域网的身份,P2P参数选择器504可使用查找表或预定公式来确定要在相同频谱中使用的P2P参数。
作为另外的例示,对等通信器206可计算要与局域对等网络一起使用的参数。WAN标识符502可以确定用于与对等网络相同频谱的广域网的参数(例如,WAN参数)。例如,WAN标识符502可以发现信标、PN(伪随机)序列信号、导频信号或可以是与广域网相关联的特征信号的其他广播信号(例如,由基站传送(未示出)的)。此外,WAN标识器502可以分析广播信号以估计与广域网相关联的WAN参数。根据另一示例,WAN标识器502可标识广域网的类型(例如所使用的空中接口技术)并从存储器506中保存的查找表确定与其相关联的WAN参数。然而,应当理解,所要求权利的主题并不限于前述示例。此后,P2P参数选择器504可根据广域网的参数(例如,WAN参数)导出对等网络的参数(例如,P2P参数)。因此,P2P参数选择器504可基于对用在相同频谱的广域网的最佳WAN参数的了解来使对P2P参数的选择最优化。
如果对等网络在给定频谱内与广域网共存,则P2P参数可以是WAN参数的函数。根据一示例,P2P参数选择器504可基于该函数生成P2P参数。根据另一示例,描述关联于WAN参数的P2P参数的信息可被包括在保存在存储器506中的查找表中。根据一例示,假设WAN和P2P网络两者皆使用基于OFDM的空中接口技术。P2P参数可被选择成使得Δp2p=f(ΔWAN),其中Δp2p是对等网络的频调间距,ΔWAN是广域网的频调间距。例如,Δp2p=NΔWAN,其中N是实数。在一实施例中,N>1(例如,N=2、4、8、10、12、16、...)。在另一实施例中,N<1(例如,N=1/2、1/4、1/8、1/10、1/12、1/16、...)。此外,循环前缀的长度可被选择成使得TCP_P2P=g(TCP-WAN),(例如, 其中K=2、4、8、10、12、16等)。在一实施例中,K=N。因此,例如,用于对等网络的频调间距可比用于广域网的频调间距大N倍,并且用于对等网络的码元时间比用于广域网的码元时间短N倍。注意,函数f或g取决于WAN所用的特定空中接口。例如,如果WAN使用3GPP LTE空中接口技术,或WAN使用WiMax空中接口技术,则f或g的函数可以不同,即使两种技术都基于OFDM也是如此。此外,根据一个示例,假设P2P网络使用基于OFDM的空中接口技术,但是WAN网络使用基于CDMA的空中接口技术,例如UMTSW-CDMA。P2P参数可被选择成使得Δp2p=h(FCWAN),其中FCWAN可代表用在UMTS W-CDMA中的系统参数(例如,CDMA码片速率)。
参看图6-8,它例示了与在广域网和局域对等网络之间共享带宽有关的方法。虽然为了简化解释的目的,这些方法被示为并描述为一系列动作,但是应当明白和理解,这些方法不限于动作的次序,因为根据一个或多个实施例,某些动作可以不同的次序发生和/或与在此所示和描述的其他动作并发地发生。例如,本领域熟练技术人员将明白和理解,方法可替换地表示成诸如状态图中的一系列相互关联的状态或事件。此外,并非所有所例示的动作都是实现根据一个或多个实施例的方法所必需的。
参看图6,所例示的是有助于在广域网与局域对等网络之间共享带宽的方法600。在602,在无线频谱中,对广域网使用第一参数集。例如,这些参数可涉及基于OFDM的空中接口技术的频调间距、码元时间、循环前缀等或基于CDMA空中接口技术的CDMA码片速率。另外,不同类型的广域网(例如,LTE、3GPP、3GPP2、UMTS、WiMax、Flash-OFDM、...)可各自与相应的参数集相关联。此外,第一参数集可以用于在广域网上传送和/或接收数据。在604,在相同频谱中,对局域对等网络使用第二参数集。第二参数集可用于在局域对等网络上发送和/或获得数据。另外,在第二集中的参数可以是在第一集中的参数的函数。此外,公共频带(例如,在许可频谱内)由广域网和局域对等网络来使用;例如,对等网络可以在共享无线频谱未被广域网使用或未被其充分利用时时机会性地使用共享无线频谱。与局域对等网络一起使用的第二参数集可以包括与在广域网中使用的第一参数集相比较短的码元时间、较短的循环前缀和/或较大的频调间距。
现在转向图7,所例示的是有助于标识要用于经由局域对等网络通信的参数的方法700。在702,广域网可被标识。例如,可感测关于广域网的信息。作为其它示例,可以接收与广域网相关联的信标信号,并且该信标信号指示可用性、广域网空中接口技术的类型和/或所使用的系统参数。在704,要用于对等网络的参数数据可根据所标识广域网的来访问。根据一示例,参数数据可从保存在存储器中的查找表中获得。根据另一示例,参数数据可基于与广域网相对应的不同参数数据来计算。此后,参数数据可以用于在对等网络上传送和/或接收数据。作为其它示例,对等网络参数可降低半双工第一对等设备在该第一对等设备自身正在传送时可能错过由第二对等设备所传送的信号的概率。
转向图8,所例示的是有助于计算对等网络的参数的方法800。在802,用于与对等网络相同的频谱的广域网的参数可被确定。例如,可接收与广域网相关联的特征信号,并且可标识与其相关联的参数。根据另一示例,可基于广域网的类型从查找表确定广域网的参数。在804,可根据广域网的参数导出对等网络的参数。根据一示例,对等网络的频调间距可比广域网的频调间距大N倍,而对等网络的码元时间可比广域网的码元时间短N倍;对于此示例,进一步而言,N可以是任意实数(例如,N可以是8)。
根据在此所描述的一个或多个方面,应当理解,可作出关于共享用于经由对等网络和局域对等网络进行通信的无线频谱的推论。如本文所用的,术语“推断”和“推论”通常指根据经由事件和/或数据捕获的一组观测推理或推断系统、环境和/或用户的状态的过程。推论可以用来标识特定的上下文或动作,或例如可以生成状态上的概率分布。推论可以是概率性的——即,基于数据和事件的考虑计算感兴趣状态上的概率分布。推论还可指用于从一组事件和/或数据中构成高层事件的技术。这种推论导致根据一组观测的事件和/或所存储的事件数据构造新的事件或动作,无论这些事件是否因时间接近度接近而相关,以及无论这些事件和数据是否来自一个或多个事件和数据源。
根据一示例,以上给出的一种和多种方法可以包括作出关于确定结合经由对等网络通信使用的参数的推论。根据另一示例,可作出有关标识期间共享频谱可用于在对等网络上传送数据的时间的推论。应当理解,前述的示例实质上是示例性的,并且并不限于可作出的推论的数目或结合在此所描述的各种实施例和/或方法作出的这些推论的方式。
图9描绘了根据各种方面实现的示例通信系统900,该系统包括多个蜂窝小区:蜂窝小区I902、蜂窝小区M904。注意,毗邻蜂窝小区902、904稍微重叠,如蜂窝小区边界区域968指示的那样,由此产生由毗邻蜂窝小区中的基站发射的信号之间潜在可能的信号干扰。系统900的每个蜂窝小区902、904包括三个扇区。根据各个方面,没有被分割成多个扇区(N=1)的蜂窝小区、具有两个扇区(N=2)的蜂窝小区和具有3个扇区以上(N>3)的蜂窝小区也是可能的。蜂窝小区902包括第一扇区——扇区I910、第二扇区——扇区II912、和第三扇区——扇区III914。每个扇区910、912、914具有两个扇区边界区域;每个边界区域在两个相邻扇区之间共享。
扇区边界区域提供了由毗邻扇区中的基站发射的信号之间潜在可能的信号干扰。线916代表在扇区I910与扇区II912之间的扇区边界区域;线918代表了在扇区II912与扇区III914之间的扇区边界区域;线920代表了在扇区III914与扇区I910之间的扇区边界区域。类似地,蜂窝小区M904包括第一扇区——扇区I922、第二扇区——扇区II924,和第三扇区——扇区III926。线928代表了在扇区I922与扇区II924之间的扇区边界区域;线930代表了在扇区II924与扇区III926之间的扇区边界区域;线932代表了扇区III926与扇区I922之间的扇区边界区域。蜂窝小区I902包括基站(BS)——基站I906,以及每个扇区910、912、914中的多个端节点(EN)(例如,无线终端)。扇区I910包括分别经由无线链路940、942耦合到BS906的EN(1)936和EN(X)938;扇区II912包括分别经由无线链路948、950耦合到BS906的EN(1’)944和EN(X’)946;扇区III914包括分别经由无线链路956耦合到BS906的EN(1”)952和EN(X”)954。类似地,蜂窝小区M904包括基站M908以及每个扇区922、924、926内的多个端节点(EN)。扇区I922包括分别经由无线链路940’、942’耦合到基站BS M908的EN(1)936’和EN(X)938’;扇区II924包括分别经由无线链路948’、950’耦合到BS M908的EN(1’)944’和EN(X’)946’;扇区3926包括分别经由无线链路956’、958’耦合到基站BS908的EN(1”)952’和EN(X”)954’。
系统900还包括分别经由网络链路962、964耦合到BS I906和BS M908的网络节点960。网络节点960也经由网络链路966连接到其他网络节点——例如其他基站、AAA服务器节点、中间节点、路由器等——和因特网。网络链路962、964、966例如可以是光纤电缆。例如EN(1)936的每个端节点可以是包括发射机和接收机的无线终端。例如EN(1)936的无线终端可在整个系统900中移动,并可以经由无线链路与EN当前所处的蜂窝小区中的基站进行通信。例如EN(1)936的无线终端(WT)可经由例如BS906的基站和/或网络节点960与例如系统900内或外的其他WT的对等节点进行通信。例如EN(1)936的WT可以是移动通信设备,例如蜂窝电话、具有无线调制解调器的个人数据助理等。各个基站在条状码元周期内使用与用于在例如非条状码元周期的剩余码元周期内分配频调和确定频调跳跃的方法不同的方法来执行频调子集分配。无线终端使用所述频调子集分配方法连同从基站接收到的信息——例如基站斜坡ID、扇区ID信息——来确定它们可以用来在特定条状码元周期接收数据和信息的频调。频调子集分配序列是根据各种方面来构建以使扇区间和蜂窝小区间的干扰分摊到各个频调上。
局域对等通信也可以由通信系统900来支持。例如,公共频谱可用于局域对等通信以及经由广域网(例如,蜂窝基础设施网络)的通信。无线终端可经由例如对等网络970、972、和974的局域对等网络与其他对等设备进行通信。尽管描绘了三个对等网络970-974,但是应当理解,也可以支持任意数目、大小、形状等的对等网络。例如,每个对等网络970-974可包括支持无线终端之间信号的直接传递。另外,每个对等网络970-974包括在近似地理区域(例如,落在彼此的范围内)内的无线终端。例如,EN(1)936可通过局域对等网络970与EN(X)938进行通信。然而,应当理解,无线终端没必要与包括在公共对等网络中的相同扇区和/或蜂窝小区相关。此外,对等网络可以重叠(例如,EX(X’)946可使用对等网络972和974)。另外,无线终端可能不被对等网络支持。无线终端可以使用广域网与对等网络重叠处的那些网络(例如,并发或串行地)。此外,无线终端可以无缝地转换或并发地影响这些网络。因此,无线终端无论发射和/或接收都可以选择性地使用网络的一种或多种来使通信最优化。
图10示出了根据各个方面的示例基站1000。基站1000实现频调子集分配序列,并且为蜂窝小区的各个不同扇区类型生成不同的频调子集分配序列。基站1000可用作图9系统900的基站906、908中的任一个。基站1000包括通过总线1009耦合在一起的接收机1002、发射机1004、例如CPU的处理器1006、输入/输出接口1008和存储器1010,在该总线上各个元件1002、1004、1006、1008和1010可以交换数据和信息。
耦合到接收机1002的扇区化天线1003被用于从来自基站的蜂窝小区内的每个扇区的无线终端传输接收数据和其他信号,例如,信道报告。耦合到发射机1004的扇区化天线1005被用于向基站蜂窝小区的每个扇区内的无线终端1100(参见图11)传送数据和其他信号,例如,控制信号、导频信号、信标信号等。在各个方面,基站1000可以使用多个接收机1002和多个发射机1004,例如单独的接收机1202用于每个扇区且单独的发射机1004用于每个扇区。处理器1006例如可以是通用中央处理单元(CPU)。处理器1006在存储在存储器1010中的一个或多个例程1018的指导下控制基站1000的操作并实现方法。I/O接口1008提供了到其他网络节点的连接——将BS1000耦合到其他基站、接入路由器、AAA服务节点等——其他网络和因特网。存储器1010包括例程1018和数据/信息1020.
数据/信息1020包括数据1036、包括下行链路条状码元时间信息1040和下行链路频调信息1042的频调子集分配序列信息1038、和包括多组WT信息——WT1信息1046和WT N信息1060——的无线终端(WT)数据/信息1044。例如WT1的信息1046的每组WT信息包括数据1048、终端ID1050、扇区ID1052、上行链路信道信息1054、下行链路信道信息1056和模式信息1058。
例程1018包括通信例程1022和基站控制例程1024。基站控制例程1024包括调度器模块1026和信令例程1028,该信令例程包括用于条状码元周期的频调子集分配例程1030、用于例如非条状码元周期的剩余码元周期的其他下行链路频调分配跳跃例程1032和信标例程1034。
数据1036包括将被送到发射机1004的编码器1014以在传输到WT之前进行编码的待传送数据和已在接收之后通过接收机1002的解码器1012处理的来自WT的接收数据。下行链路条状码元时间信息1040包括帧同步结构信息,例如超时隙、信标时隙和超隙(ultraslot)结构信息和指定给定码元周期是否是条状码元周期的信息——且如果如此的情况下为条状码元周期的索引——以及条状码元是否是用于截断由基站使用的频调子集分配序列的重置点的信息。下行链路频调信息1042包括包含指派给基站1000的载波频率的信息、频调的数量和频率、和将要分配到条状码元周期的频调子集的集合以及诸如斜坡、斜坡索引和扇区类型的其他小区和扇区专用值。
数据1048可以包括WT1000已经从对等节点接收的数据、WT1000希望传送给对等节点的数据、和下行链路信道质量报告反馈信息。终端ID1050是标识WT11000的基站1000指派ID。扇区ID1052包括标识WT11000所运作的扇区的信息。扇区ID1052可例如用于用于确定扇区类型。上行链路信道信息1054包括标识已由调度器1026分配给WT1 1000使用的信道片段——例如数据的上行链路话务信道片段、用于请求、功率控制、定时控制等的专用上行链路控制信道——的信息。指派给WT1 1100的每个上行链路信道包括一个或多个逻辑频调,每个逻辑频调遵循上行跳跃序列。下行链路信道信息1056包括标识已由调度器1026分配来携带数据和/或信息到WT1 1100的信道片段——例如用于用户数据的下行链路话务信道片段——的信息。指派给WT1 1100的每个下行链路信道包括一个或多个逻辑频调,每个频调遵循下行链路跳跃序列。模式信息1058包括标识WT1 1100的操作状态——例如睡眠、保持、开启——的信息。
通信例程1022控制基站1000来执行各种通信操作并实现各种通信协议。基站控制例程1024被用于控制基站1000来执行例如信号生成和接收、调度的基本基站功能任务,并实现某些方面的方法的步骤,包括在条状码元周期内使用频调子集分配序列向无线终端传送信号。
信令例程1028控制接收机1002及其解码器1012的操作以及发射机1004及其编码器1014的操作。信令例程1028负责控制所传送数据1036和控制信息的生成。频调子集分配例程1030使用本方面的方法并使用包括下行链路条状码元时间信息1040和扇区ID1052的数据/信息1020构建要在条状码元周期使用的频调子集。下行链路频调子集分配序列对于蜂窝小区中的每个扇区类型是不同的,且对于相邻蜂窝小区也是不同的。WT1100根据下行链路频调子集分配序列在条状码元周期中接收信号;基站1000使用相同的下行链路频调子集分配序列以便生成所传送的信号。其他下行链路频调分配跳跃例程1032使用包括用于除条状码元周期之外的码元周期的下行链路频调信息1042、和下行链路信道信息1056来构建下行链路频调跳跃序列。下行链路数据频调跳跃序列在蜂窝小区的扇区上被同步。信标例程1034控制信标信号的发射,例如集中于一个或很少的频调上的相对高功率信号的信号,该信标信号可用于同步,例如用于同步下行链路信号的帧定时结构以及由此相对于超隙边界的频调子集分配序列。
图11显示了可以用作图9所示系统900的无线终端(例如,端节点、移动设备、...)的任一个——例如EN(1)936——的示例无线终端(例如,端节点、移动设备、....)1100。无线终端1100实现频调子集分配序列。无线终端1100包括通过总线1110耦合在一起的包含解码器1112的接收机1102、包含编码器1114的发射机1104、处理器1106和存储器1108,在该总线上各个元件1102、1104、1106、1108可以交换数据和信息。用于从基站1000接收信号的天线1103被耦合到接收机1102。用于向例如基站900发射信号的天线1105被耦合到发射机1104。
例如CPU的处理器1106通过执行例程1120并使用存储器1108中的数据/信息1122来控制无线终端1100的操作并实现方法。
数据/信息1122包括用户数据1134、用户信息1136、频调子集分序列信息1150、和查找表1156。用户数据1134包括发往对等节点的、将被路由到解码器1114以在由发射机1104传送到基站900之前进行编码的数据和接收自基站900的、已由接收机1102中的解码器1112处理的数据。用户信息1136包括上行链路信道信息1138、下行链路信道信息1140、终端ID信息1142、基站ID信息1144、扇区ID信息1146、和模式信息1148。上行链路信道信息1138包括标识已由基站1000指派给无线终端1100以在向基站1000传送时使用的上行链路信道片段的信息。上行链路信道可以包括上行链路话务信道、例如请求信道、功率控制信道和定时控制信道的专用上行链路控制信道。每个上行链路信道包括一个或多个逻辑频调,每个逻辑频调遵循上行链路频调跳跃序列。上行链路跳跃序列在蜂窝小区的每个扇区类型之间以及相邻蜂窝小区之间是不同的。下行链路信道信息1140包括标识已由基站900指派给WT1100用于在BS1000向WT1100传送数据/信息时使用的下行链路信道片段的信息。下行链路信道包括下行链路话务信道和指派信道,每个下行链路信道包括一个或多个逻辑频调,每个逻辑频调遵循在蜂窝小区的每个扇区之间被同步的下行链路跳跃序列。
用户信息1136也包括作为基站1000指派标识的终端ID信息1142、标识WT已经与之建立通信的特定基站1000的基站ID信息1144、和识别WT1100当前所处的蜂窝小区的特定扇区的扇区ID信息1146。基站ID1144提供了蜂窝小区斜坡值而扇区ID信息提供扇区索引类型;蜂窝小区斜坡值和扇区索引类型可用于导出频调跳跃序列。也包括在用户信息1136中的模式信息1148标识WT1100是处于睡眠模式、保持模式还是开启模式。
频调子集分配序列信息1150包括下行链路条状码元时间信息1152和下行链路频调信息1154。下行链路条状码元时间信息1152包括帧同步结构信息,诸如超时隙、信标时隙和超隙结构信息以及指定给定码元周期是否是条码码元周期——且如果如此的情况下为条状码元周期的索引——以及条状码元是否是用于截断由基站使用的频调子集分配序列的重置点的信息。下行链路频调信息1154包括包含指派给基站1000的载波频率、频调的数目和频率、以及分配到条状码元周期的频调子集的集合、以及诸如斜坡、斜坡索引和扇区类型的其他蜂窝小区和扇区专用值的信息。
例程1120包括通信例程1124、无线终端控制例程1126、WAN通信例程1128、P2P通信例程1130、和WAN标识器例程1132。通信例程1124控制由WT1100使用的各种通信协议。无线终端控制例程1126控制基本无线终端1100功能,包括对接收机1102和发射机1104的控制。WAN通信例程1128控制与基站1000(和/或不同基站)在广域网(例如,蜂窝网络)上的通信。例如,WAN通信现例程1128可实现对用于经由广域网(例如,蜂窝网络)进行通信的第一参数集的估计。P2P通信例程1130控制经由局域对等网络与对等设备(例如,不同无线终端)的通信。例如,P2P通信例程1130可以标识用于对等通信的参数(例如,频调间距、循环前缀、码元时间、...)。P2P通信例程1130可实现从查找表1156获取、访问第二参数集。WAN标识器例程1132控制对WAN控制接口技术的类型的标识。
参看图12,所例示的是实现通过广域网和局域对等网络通信的系统1200。例如,系统1200可以至少部分地驻留在无线终端内。应当理解,系统1200被表示为包括功能块,这些功能块可以是代表由处理器、软件或其组合(例如,固件)实现的功能的功能块。系统1200包括可以结合进行动作的电子组件的逻辑组群1202。例如,逻辑组群1202可以包括用于标识广域网1204的电子组件。例如,所接收的信标信号可被分析以确定广域网是否可用、广域网的类型、与该广域网相关联的参数等。此外,逻辑组群1202可包括用于根据所标识的广域网1206访问要用于对等网络的参数的电子组件。对等网络可以使用与广域网共享的带宽。根据一示例,要用于对等网络的参数可被导出(例如,基于广域网的类型、与广域网相对应的参数、...)。根据另一示例,对等网络参数可以从查找表中标识。另外,系统1200可包括存储器1208,该存储器保存用于执行与电子组件1204和1206相关联的功能的指令。虽然示为置于存储器1208的外部,但是应当理解,电子组件1204和1206的一个或多个可存在于存储器1408之内。
应当明白,在此所描述的实施例可以硬件、软件、固件、中间件、微代码或其任意组合来实现。对于硬件实现,处理单元可以在一个或多个专用集成电路(ASIC)、数字信号处理器(DSP)、数字信号处理器件(DSPD)、可编程逻辑设备(PLD)、现场可编程门阵列(FPGA)、处理器、控制器、微控制器、微处理器、设计成执行在此所述功能的其他电子单元或其组合内实现。
当这些实施例以软件、固件、中间件或微代码、程序代码或代码断来实现时,它们可被存储在诸如存储组件的机器可读介质中。代码段可代表过程、函数、子程序、程序、例程、子例程、模块、软件包、类、或者指令、数据结构或程序段的任何组合。代码段可通过传递和/或接收信息、数据、自变量、参数、或存储器内容耦合到另一代码段或硬件电路。信息、自变量、参数、数据等可以被使用包括存储器共享、消息传递、令牌传递、网络传输等任何合适的手段来传递、转发或传送。
对于软件实现,在此描述的技术可以使用执行在此描述的功能的模块(例如,过程、函数等)来实现。这些软件代码可被存储在存储器单元中并由处理器来执行。存储器单元可以在处理器内部或处理器外部实现,在后一情形中,其可经由本领域汇总已知的的各种手段耦合到处理器。
上面所描述的包括一个或多个实施例的示例。当然出于描述上述实施例的目的而要描述组件或方法的每一种可构想到的组合是不可能的,但是本领域普通技术人员可以认识到,各个实施例的进一步的组合和排列是可能的。因此,在此所描述的实施例旨在包括落入所附权利要求的精神和范围之内的所有这些变化、修改和改变。此外,就术语“包括”在本详细描述或权利要求中所使用的范畴而言,此术语旨在以与术语“包含”类似的方式作包含在内之解,正如“包含”在权利要求书中作为过渡词使用时所解释的那样。
Claims (38)
1.一种有助于经由共享频谱进行通信的方法,包括:
在无线频谱中对广域网使用第一参数集;以及
在相同的无线频谱中对局域对等网络使用第二参数集,
其中所述第二参数集是根据所述第一参数集来确定的,并且
其中基于OFDM的空中接口技术被用在所述局域对等网络和所述广域网两者中,并且所述参数涉及频调间距、码元时间和/或循环前缀。
2.如权利要求1所述的方法,其特征在于,所述第二参数集包括比所述第一参数集更短的码元时间、更短的循环前缀和/或更大的频调间距。
3.如权利要求2所述的方法,其特征在于,所述第二参数集包括比所述在第一参数集中包括的不同频调间距大N倍的频调间距,其中N是不小于2的实数。
4.如权利要求2所述的方法,其特征在于,所述第二参数集包括比在所述第一参数集中包括的不同循环前缀短K倍的循环前缀,其中K是不小于2的实数。
5.如权利要求1所述的方法,其特征在于,所述第二参数集包括比所述第一参数集更长的码元时间、更短的循环前缀和/或更小的频调间距。
6.如权利要求1所述的方法,其特征在于,还包括在所述无线频谱未被所述广域网使用或未被所述广域网充分使用时机会性地经由所述局域对等网络通信。
7.如权利要求1所述的方法,其特征在于,还包括:
估计在所述广域网的空中接口中使用的所述第一参数集中的至少一个参数的值;以及
根据所估计的参数获得用于所述局域对等网络的所述第二参数集。
8.如权利要求7所述的方法,其特征在于,还包括标识用在所述广域网中的所述空中接口技术。
9.如权利要求8所述的方法,其特征在于,获得所述第二参数集还包括基于所估计的在所述广域网的所述空中接口中使用的所述至少一个参数的值或所标识的用在所述广域网中的空中接口技术来从查找表中获得所述第二参数集。
10.如权利要求8所述的方法,其特征在于,获得所述第二参数集还包括基于所估计的在所述广域网的所述空中接口中使用的所述至少一个参数的值或所标识的用在所述广域网中的空中接口技术来计算所述第二参数集的至少一部分。
11.如权利要求7所述的方法,其特征在于,估计所述至少一个参数的值还包括接收与所述广域网相关联的信标信号。
12.一种实现通过广域网和局域对等网络通信的无线通信方法,包括:
标识广域网;
以及根据所标识的广域网的一参数集确定要用于对等网络的参数数据,
其中基于OFDM的空中接口技术被用在所述局域对等网络和所述广域网两者中,并且所述参数涉及频调间距、码元时间和/或循环前缀。
13.如权利要求12所述的无线通信方法,还包括:接收与所述广域网相关联的特征信号并基于所述特征信号估计在所述广域网的空中接口中使用的至少一个WAN参数的值。
14.如权利要求13所述的无线通信方法,还包括:标识用在所述广域网中的所述空中接口技术。
15.如权利要求14所述的无线通信方法,其特征在于,确定要用于对等网络的参数数据包括:基于所估计的在所述广域网的所述空中接口中使用的所述至少一个参数的值或所标识的用在所述广域网中的空中接口技术来从所述查找表中检索所述参数数据,其中所述查找表包括用于所述对等网络的、与广域网的多种空中接口技术相对应的多个参数集。
16.如权利要求14所述的无线通信方法,其特征在于,确定要用于对等网络的参数数据包括:根据所估计的在所述广域网的所述空中接口中使用的所述至少一个参数的值或所标识的用在所述广域网中的空中接口技术来导出所述参数数据。
17.如权利要求12所述的无线通信方法,还包括:使用共享频谱经由所述广域网和所述对等网络进行通信。
18.如权利要求12所述的无线通信方法,其特征在于,要用于所述对等网络的所述参数数据包括比用于所述广域网的不同参数数据更短的码元时间、更短的循环前缀和/或更大的频调间距。
19.如权利要求12所述的无线通信方法,其特征在于,要用于所述对等网络的所述参数数据包括比用于所述广域网的不同参数数据更长的码元时间、更短的循环前缀和/或更小的频调间距。
20.一种实现通过广域网和局域对等网络通信的无线通信装置,包括:
用于标识广域网的装置;以及
用于根据所标识的广域网的一参数集来确定要用于局域对等网络的参数的装置,
其中基于OFDM的空中接口技术被用在所述局域对等网络和所述广域网两者中,并且所述参数涉及频调间距、码元时间和/或循环前缀。
21.如权利要求20所述的无线通信装置,其特征在于,还包括用于使用共享带宽来通过所述广域网和所述局域对等网络通信的装置。
22.如权利要求20所述的无线通信装置,其特征在于,还包括用于确定与所述广域网相关联的空中接口技术的装置。
23.如权利要求20所述的无线通信装置,其特征在于,还包括用于估计要对所述广域网使用的不同参数的装置。
24.如权利要求20所述的无线通信装置,其特征在于,还包括用于导出要用于所述局域对等网络的所述参数的装置。
25.如权利要求20所述的无线通信装置,其特征在于,还包括用于在共享频谱未被所述广域网使用或未被所述广域网充分使用时机会性地经由所述局域对等网络通信的装置。
26.如权利要求20所述的无线通信装置,其特征在于,要用于所述对等网络的所述参数包括比用于所述广域网的不同参数更短的码元时间、更短的循环前缀和/或更大的频调间距。
27.如权利要求20所述的无线通信装置,其特征在于,要用于所述局域对等网络的参数包括比用于所述广域网的不同参数更长的码元时间、更短的循环前缀和/或更小的频调间距。
28.一种有助于经由共享频谱进行通信的设备:
用于对广域网使用第一参数集的装置;以及
用于对如同所述广域网那样使用公共无线频谱的局域对等网络使用第二参数集的装置,
其中所述第二参数集中的至少一个参数是基于所述第一参数集的至少部分而生成的,并且
其中基于OFDM的空中接口技术被用在所述局域对等网络和所述广域网两者中,并且所述参数涉及频调间距、码元时间和/或循环前缀。
29.如权利要求28所述的设备,其特征在于,所述第二参数集包括比所述第一参数集更短的码元时间、更短的循环前缀和/或更大的频调间距。
30.如权利要求29所述的设备,其特征在于,所述第二参数集包括比在所述第一参数集中包括的不同频调间距大N倍的频调间距,其中N是不小于2的实数。
31.如权利要求29所述的设备,其特征在于,所述第二参数集包括比在所述第一参数集中包括的不同循环前缀短K倍的循环前缀,其中K是不小于2的实数。
32.如权利要求28所述的设备,其特征在于,所述第二参数集包括比所述第一参数集更长的码元时间、更短的循环前缀和/或更小的频调间距。
33.如权利要求28所述的设备,还包括用于通过使用与所述广域网共享的频谱的所述局域对等网络机会性地传送的装置。
34.如权利要求28所述的设备,还包括用于估计在所述广域网的空中接口中使用的所述第一参数集中的至少一个参数的值并根据所估计的参数获得用于所述局域对等网络的所述第二参数集的装置。
35.如权利要求34所述的设备,还包括用于标识用在所述广域网中的所述空中接口技术的装置。
36.如权利要求35所述的设备,还包括用于基于所估计的在所述广域网的所述空中接口中使用的所述至少一个参数的值或所标识的用在所述广域网中的空中接口技术来从查找表中获得所述第二参数集的装置。
37.如权利要求35所述的设备,还包括用于基于所估计的在所述广域网的所述空中接口中使用的所述至少一个参数的值或所标识的用在所述广域网中的空中接口技术来计算所述第二参数集的至少一部分的装置。
38.如权利要求34所述的设备,还包括用于接收与所述广域网相关联的、作为估计所述至少一个参数的值的基础的信标信号的装置。
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