CN101371521A - 选择对等通信系统中的参数 - Google Patents

选择对等通信系统中的参数 Download PDF

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CN101371521A
CN101371521A CNA2007800030378A CN200780003037A CN101371521A CN 101371521 A CN101371521 A CN 101371521A CN A2007800030378 A CNA2007800030378 A CN A2007800030378A CN 200780003037 A CN200780003037 A CN 200780003037A CN 101371521 A CN101371521 A CN 101371521A
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CN101371521B (zh
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R·拉洛亚
李君易
吴新州
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Qualcomm Inc
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Abstract

描述便于选择用于局域对等网络的参数的系统和方法。这些参数可涉及频调间距、循环前缀、码元时间等。进一步，这些参数可以是与该局域对等网络相关联的状态(例如，对等设备发现状态、控制相关业务状态、数据相关业务状态……)的函数。此外，该局域对等网络可与广域网共享频谱；如此，可基于广域网的类型(例如，空中接口技术)和/或广域网相关参数来选择用于对等网络的参数。

Description

选择对等通信系统中的参数
相关申请的交叉引用本申请要求于2006年1月11日提交的名称为“使用信标信号便于标识、同步、或采集的方法和装置(METHOD ANDAPPARATUS FOR FACILITATING IDENTIFICATION，SYNCHRONIZATION OR ACQUISITION USING BEACON SIGNALS)”的美国临时专利申请No.60/758010、于2006年1月11日提交的名称为“在ad hoc无线网络中使用信标信号进行标识、同步、或采集的方法和装置(METHOD AND APPARATUS FOR USING BEACON SIGNALS FORIDENTIFICATION，SYNCHRONIZATION OR ACQUISITION IN AN ADHOC WIRELESS NETWORK)”的美国临时专利申请No.60/758011、于2006年1月11日提交的名称为“认知无线电网络中使用信标信号的方法和装置(METHOD AND APPARATUS FOR USING BEACON SIGNALS IN ACOGNITIVE RADIO NETWORK)”的美国临时专利申请No.60/758012、于2006年9月15日提交的名称为“功率分配方案(POWER ALLOCATIONSCHEME)”的美国临时专利申请No.60/845052、于2006年9月15日提交的名称为“混合无线通信系统中的信标(BEACONS IN A MIXEDWIRELESS COMMUNICATION SYSTEM)”的美国临时专利申请No.60/845051、于2006年10月27日提交的名称为“混合通信系统中的信标(BEACONS IN A MIXED COMMUNICATION SYSTEM)”的美国临时专利申请No.60/863304的优先权。通过引用将前述申请的全部内容结合于此。
背景
1.领域
下面的描述一般涉及无线通信，尤其涉及标识用于通过局域对等网络进行通信的参数。
2.背景
无线通信系统被广泛应用以提供各种类型的通信，例如，可通过这些无线通信系统来提供语音和/或数据。一般的无线通信系统或网络可向多个用户提供到一个或多个共享资源的访问。例如，系统可以使用多种多路存取技术，诸如频分复用(FDM)、时分复用(TDM)、码分复用(CDM)、正交频分复用(OFDM)等。
常见的无线通信系统使用提供覆盖范围的一个或多个基站。一般的基站可以发送多个数据流用于广播、组播和/或单播服务，其中数据流可以是关于无线终端的独立接收的数据流。在这种基站的覆盖范围内的无线终端可用于接收由合成流承载的一个、多个或全部数据流。类似地，无线终端可以将数据发送到基站或另一无线终端。
根据另—示例，无线通信系统常常使用对等或ad hoc结构，在该结构中无线终端可直接向另一无线终端传送信号。如此，信号无需通过基站；相反，处于彼此范围之内的无线终端可直接发现和/或进行通信。对等网络可利用用于传送数据的无线频谱的各个部分。然而，无线频谱是昂贵和很有价值的资源。此外，传统的对等网络一般以产生无线频谱相关浪费的低效率方式进行通信。
概述下面给出一个或多个实施例的简化概述，以提供对这些实施例的基本理解。该概述并非所有可预见实施例的广泛总述，且并非旨在标识所有实施例的关键或重要元素，亦非旨在描绘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多个实施例的某些概念，作为后面所展示的更详细描述的序言。
根据一个或多个实施例及其相应的公开内容，结合便于选择用于局域对等网络的参数来描述各方面。这些参数可以与频调空间、循环前缀、码元时间等相关。进一步，这些参数可以是与局域对等网络相关的状态的函数(例如，对等设备发现状态、控制相关的业务状态、数据相关的业务状态……)。此外，局域对等网络可以与广域网共享频谱；如此，可基于广域网的类型(例如，空中接口技术)和/或广域网相关的参数来选择用于对等网络的参数。
根据相关方面，本文描述便于选择局域对等网络中的参数的方法。该方法可包括将第一组参数用于对等网络中的第一状态。进一步，该方法可包括将第二组参数用于对等网络中的第二状态。
另一方面涉及无线通信装置。该无线通信装置可包括保留指令的存储器，这些指令与标识与对等通信相关联的状态以及确定用于对等通信的作为所标识的状态的函数的一组参数相关。进一步，该无线通信装置还包括耦合到存储器的、配置成执行存储器中所保存的指令的处理器。
又一方面涉及允许在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与对等通信相关的状态的装置、以及用于访问用于该对等通信的作为状态的函数的一组参数的装置。
另一方面涉及其上存储了机器可读指令的机器可读介质，这些指令用于确定对等网络的状态、确定与该对等网络共用共同带宽的广域网的类型、以及基于该状态和该广域网类型来获取用于对等网络的参数数据。
根据另一方面，无线通信系统中的装置可包括处理器，其中处理器可被配置成确定与通过对等网络进行通信相关的状态以及获得用于通过对等网络进行通信的作为状态的函数的一组参数。
为完成前述和相关目标，所述一个或多个实施例包括此后完整描述并在权利要求中特别指出的特征。下面的描述和附图详细阐述了一个或多个实施例的特定说明性方面。但是，这些方面仅指示其中可使用各实施例的原理的各种方法的少数，且所述实施例旨在包括所有这些方面及其等效技术方案。
附图简述
图1是根据本文所述各方面的无线通信系统的视图。
图2是选择作为与对等通信相关的状态的函数的参数的示例系统的视图。
图3是与在局域对等网络上的通信相关联的状态示例图的视图。
图4是根据各方面的示例频谱的视图。
图5是根据本文所述各个方面的可传送的示例码元的视图。
图6是在本地区域对等环境中区分状态期间采用的参数范围的示例图的视图。
图7是使用共享频谱能够通过广域网和对等网络通信的示例系统的视图。
图8是有助于在本地区域对等网络中选择参数的示例方法的视图。
图9是有助于标识用于通过本地区域对等网络通信的参数的示例方法的视图。
图10是便于基于状态和类型广域网(例如，空中接口技术)来标识对等参数的示例方法的视图。
图11是根据各方面实现的包括多个小区的示例通信系统的视图。
图12是根据各方面的示例基站的视图。
图13是根据本文所述各个方面实现的示例无线终端(例如，移动设备，端节点，……)的视图。
图14是允许在局域对等网络上进行通信的示例系统的视图。
详细描述
现在参考附图描述各个实施例，其中贯穿全文使用相同的参考标记来指相同的元件。在下面的描述中，出于解释的目的，阐述大量具体细节以提供对一个或多个实施例的透彻理解。但是，明显的是，没有这些具体细节也可实施这些实施例。在其他情况下，以框图形式示出已知结构和设备以便于描述一个或多个实施例。
如本申请中所使用的，术语“组件”、“模块”、“系统”等旨在指计算机相关实体，或者硬件、固件、硬件与软件的组合、软件或执行中的软件。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、执行的线程、程序，和/或计算机。作为说明，在计算设备上运行的应用程序和该计算设备都可以是组件。一个或多个组件可驻留在执行的进程和/或线程中，且组件可以位于一台计算机内和/或分布在两台或多台计算机之间。此外，可从其上存储了各种数据结构的各种计算机可读介质来执行这些组件。这些组件可以通过诸如根据具有一个或多个数据分组的信号等本地和/或远程进程的方式进行通信(例如，来自一个组件的数据通过信号的方式与本地系统、分布式系统与另一组件，和/或跨越诸如因特网等网络与其它系统进行交互)。
此外，本文结合无线终端来描述各实施例。无线终端也可被称为系统、用户单元、用户站、移动台、移动、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、会话启动协议(SIP)电话、无线本地环路(WLL)站、个人数字助理(PDA)、具有无线连接功能的手持式设备、计算设备、或连接到无线调制解调器的其他处理设备。此外，本文结合基站来描述各实施例。基站可用于与无线终端进行通信，且也可被称为接入节点、节点B、或某些其他术语。
此外，本文所述各方法或特征可作为方法、装置或使用标准编程和/或工程技术的制品来实现。本文所使用的术语“制品”旨在涵盖可从任何计算机可读设备、载体、或介质访问的计算机程序。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，紧致盘(CD)、数字多用盘(DVD)等)、智能卡、和闪存设备(例如，EPROM、卡、棒、键驱动等)。此外，本文所述的各种存储介质可标识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”可包括，但不限于，无线信道和各种可存储、保存和/或承载指令和/或数据的其他介质。
现在参考图1，根据本文所展示的各种实施例来示出无线通信系统100。系统100可包括一个或多个无线终端102。虽然示出两个无线终端102，应了解系统100基本上可包括任意数量的无线终端102。无线终端102可以是，例如蜂窝电话、智能电话、膝上型计算机、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/或用于在无线通信系统100上进行通信的任何其他合适设备。无线终端102可通过局域对等(P2P)网络(例如，ad hoc网络)相互直接进行通信。可通过在无线终端102之间直接传送信号来执行对等通信，因此，信号不需要通过基站(例如基站104)。
此外，系统100可支持广域网(WAN)。系统100可包括基站104(例如接入节点)和/或在一个或多个扇区内的任意数量的不同基站(未示出)，这些基站相互之间和/或与一个或多个无线终端102之间可进行无线通信系统信号的接收、发送、重复等。基站104可包括发射机链和接收机链，本领域的技术人员将了解，其每一个可依次包括与信号发送和接收相关联的多个组件(例如处理器、调制器、多路复用器、解调器、多路分解器、天线……)。当通过系统100支持的广域基础设施进行通信时，无线终端102可发送信号到基站104和/或从基站104接收信号。
无线终端102之间的对等通信可以是同步的，且因此，无线终端102对时间具有共同的理解。例如，无线终端102可从基站104(和/或提供较少功能的发射机(未示出))获得用于同步无线终端102的操作的时基信号。此外，可预见，每个对等网络可设置其自己的时间。根据一个例子，无线终端102可在第一段时间期间执行对等设备发现并在第二段时间期间发送和/或接收业务。
无线终端102可标识一段时间期间与对等通信相关联的状态，其中该状态与无线终端102之间的通信类型相关(例如，对等设备发现、业务、寻呼……)。进一步，无线终端102可识别与所标识的状态结合使用的多组参数。例如，参数可与用于基于OFDM的空中接口技术的频调间距、码元时间、循环前缀等，或用于基于CDMA的空中接口技术的CDMA码片速率相关。此外，可唯一地修改该多组参数以优化系统100在不同状态期间的性能，从而改进与系统100相关的效率。例如，可选择管理/消除干扰、增加频谱使用效率、减少开销等的多组参数。
局域对等网络和广域网可以共享共同无线频谱来执行通信，因此，可共享带宽用于通过不同类型的网络来传输数据。进一步，结合局域对等网络所使用的参数可以是用于广域网的参数的函数，因此，用于每种类型网络的参数可以不同，即使这些网络可以在相同的频谱上操作。此外，对等网络中所使用的空中接口技术可不同于广域网中所使用的。例如，广域网可使用基于OFDM的空中接口技术(例如，3GPP LTE、WiMax、Flash-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……)，而局域对等网络可使用基于OFDM的空中接口技术。
现在转到图2，示出根据与对等通信相关联的状态来选择参数的系统200。系统200包括无线终端202，其通过对等网络与不同无线终端(例如，对等设备(未示出))进行通信。无线终端202可包括通信器204，其允许与对等环境中的对等设备进行信号的直接传递。例如，通信器204允许通过半双工模式在对等架构中的直接数据传递，其中无线设备202不能同时与对等设备接收和发送信号。通信器204(和/或不同组件)可进一步允许无线终端202在广域网上发送和/或接收来自基站的数据(未示出)。此外，通信器204可允许局域对等网络和广域网共享带宽。
无线终端202可进一步包括状态标识器206和参数选择器208。状态标识器206可确定当前与局域对等网络相关联的状态。对等网络可以是同步的，因此，无线终端202和不同无线终端可在一组时间周期期间执行对等设备发现，在不同组时间周期期间发送控制相关的业务，等等。根据一个示例，状态标识器206可基于时基信息从某些源获得、检测、导出、生成时基相关信息(例如，当前时间)，状态标识器206可解码出特定时刻(例如当前时刻)的状态。状态标识器206可允许同步无线终端202与不同无线终端(例如，基于所获得的时基信息)；例如，状态标识器206可从源(例如基站、发送机……)接收信号，可将无线终端202的操作同步到该信号。在某些实施例中，该源对于局域对等网络中的所有无线终端是共同的，因此从该共同源所获得的时基信息对所有无线终端都是同步的。在局域对等网络中，给定时可的状态以预定方式取决于时间。因此，在第一时间间隔中，该状态是对等设备发现，而在第二时间间隔中，该状态是业务。在第二时间间隔中，第一部分用于业务控制，而第二部分用于实际业务段。由于时基信息对于所有终端是同步的，所以状态也是同步的。因此，在第一时间间隔中，局域对等网络中的所有终端都处于对等设备发现状态，而在第二时间间隔中，所有终端都处于业务状态。这些终端通过以预定的方式来同步他们的时基并将状态与时基相关联从而实现状态同步。因此，这些终端不需要在它们之间明确地交换控制信令来实现状态同步。因此，通过局域对等网络进行通信的无线终端具有对时间的共同理解。通过进一步的示例，状态标识器206可以识别对等设备发现状态、控制相关的业务状态、数据相关的业务状态、寻呼状态等等。可预定对应于不同时刻的对等网络的状态。例如，这些信息可保存在存储器(例如，可使用状态标识器206访问的)中所存储的查找表中、由状态标识器206导出(例如基于预定的公式)、和/或由状态标识器206以任意方式获得。
参数选择器208可访间与状态标识器206所确定的状态相关联的一组参数。例如，这些参数可与用于基于OFDM的空中接口技术的频调间距、码元时间、循环前缀等，或用于基于CDMA的空中接口技术的CDMA码片速率相关。由参数选择器208选择的一组参数唯一地对应于与所标识的状态相关的条件。根据一个示例，在对等设备发现(和/或控制相关业务)期间，参数选择器208可标识减少无线设备202与不同无线终端之间在与交叠发送(例如，由于通过半双工模式进行的对等通信)相关联的干扰的一组参数。每个无线设备在对等设备发现期间可随机地选择发送时间(和/或控制相关业务)。无线设备可以使用半双工模式进行操作，从而其不能同时发送和监听。因此，该设备在其发送时可能会错过来自其他设备的信号。为减少错过来自其他设备的信号的概率，希望减少发送时间周期；例如，可通过以较大时间百分比来接收数据而以较小时间百分比来发送数据从而减少发送时间周期(例如，由于无线终端202不能同时进行接收和发送)。因此，该组参数可提供缩短的码元时间(例如，与广域网中使用的码元时间相比)。作为进一步的示例，在数据相关业务状态期间，参数选择器208可基于对半双工模式的考虑而选择减少开销(例如，通过相对于循环前缀来增加码元时间)而不平衡参数优化的一组参数，因为无线终端202在相关时间周期或者发送或者接收，而不在发送和接收之间进行转换。
参考图3，示出与在局域对等网络上的通信相关联的状态的示例图300。根据一个示例，图2的通信器204可执行与以下状态的每一个相关联的用于通过对等网络进行通信的操作。如所描绘的，水平轴302表示时间。图300中包括的状态可与各组参数相关联以优化通过对等网络的通信，其中这些参数可基于在每个状态期间可能发生的信令的类型。例如，对等设备(例如，无线终端)可使用对等设备发现状态304来确定支持对等通信的范围内的不同对等设备；因此，在对等设备发现304中可执行互检测和标识。在对等设备发现304期间，每个对等设备在相关联的时间期间可在某些随机选择的码元中发送数据。进一步，为了标识范围内的对等设备，由于对等网络使用半双工，从而可以最大化每个对等设备的接收时间量(例如，以减少半双工操作的影响)。此外，业务306可包括控制部分308(例如，控制相关业务状态)和数据部分310(例如，数据相关业务状态)。例如，控制部分308可用于检测对等环境中的干扰。相应地，控制部分308可以与类似于对等设备发现304的条件相关联，因为对等设备在该状态期间可在随机选择的码元上进行发送(例如，在使用大百分比时间用于接收数据以监视该环境中的干扰)。如此，类似于用于对等设备发现304的参数的一组参数可用于控制部分308。进一步，在数据部分310期间，每个对等设备可发送或接收信息而不在其间进行来回切换。因此，当选择用于数据部分310的优化参数时，无需考虑与半双工模式相关的约束。此外，虽然未示出，应了解，不同状态(例如，寻呼……)可以与对等通信相关联。进一步，可预定用于执行每个状态的时间周期。
参考图4，示出根据各方面的示例频谱400。如所示出的，水平轴402表示频率。特定载波频率404可用的带宽总量可被划分成K个相等间距的频调(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，示出了频调0406、频调1408、频调2410和频调K-1412；然而，所要求保护的主题并不被这样限制。
频调间距Δ可以是对应于局域对等网络状态的唯一参数。例如，对于对等设备发现状态和控制相关业务状态可使用类似的频调间距，而对于数据相关业务状态可使用不同的频调间距。作为进一步的示例，广域网可使用与本地对等网络相关联的频调间距的至少一个不同的频调间距。此外，每种特定类型的广域网可以与对应的频调间距相关联(例如，Flash-OFDM可使用11.25kHz的频调间距，3GPP2可使用9.6kHz的频调间距……)。此外，与局域对等网络的不同状态相关联的频调间距可以是与其共享带宽的特定类型广域网(例如，可在广域网覆盖的地理区域的至少一部分中实现该局域对等无论)的频调间距的函数。因此，根据一个例子，如果该局域对等网络与3GPP2在给定的频谱内共存，则与对等通信相关联的每个状态的参数(例如，包括频调间距)可以是用于3GPP2的参数(例如，频调间距)的函数。
频调间距可取决于移动性。例如，移动可导致多普勒效应，其产生频率偏移。因此，可使用相应频率来发送频调0 406；然而，当在接收机处获得时，频调0 406可能已经偏移到不同的频率。可选择比期望的多普勒偏移大很多的频调间距。根据一个示例，频调间距可以是比期望的多普勒约大100的系数。因此，如果所期望的多普勒偏移是100Hz(例如，对于WAN)，则频调间距可以是10kHz的数量级。然而，可以了解，所要求保护的主题并不这样限制于以上所述的示例。此外，对于局域对等环境来说，移动性可能低于广域网，且因此，多普勒可能较小。因此，对于局域对等网络可使用较小的频调间距(例如，对于数据相关业务状态，因为频调间距和/或码元时间不需要基于对干扰消除的考虑)。
转到图5，示出可根据本文所述各方面传送的示例码元500。如所示出的，水平轴502表示时间。码元500可以是正弦曲线(例如在OFDM环境中)。码元500，TSYM包括循环前缀504和可以承载数据的部分506(也称作IFFT窗口)。部分506的长度通常等于1/Δ，其中Δ是频调间距。循环前缀504，TCP的持续时间可长于期望的延迟传播。进一步，TCP和TSYM可以是选择用于对等网络(例如，用于不同状态的不同值)和广域网的参数。
多径传播可能导致延迟传播。例如，单个发送的信号可通过两个或多个路径到达接收机。根据该示例，在与不同路径相关联的不同时刻可获得该信号的副本。延迟传播与信号在其上的特定网络中传播的区域的大小互相关。根据说明，在广域网(例如，其可与较大的地理区域相关联)中，延迟传播可以是大约2到3微秒，因此，循环前缀(例如TCP)可以是大约10微秒。进一步，对于局域对等网络，延迟传播可以较小(例如，由于与较小的地理区域相关联)；例如，延迟传播可以纳米数量级。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微秒数量级。此外，例如，对于与局域对等网络相关联的不同状态来说，循环前缀可以是类似的(例如，循环前缀对于对等设备发现、控制相关业务、数据相关业务……是类似的)。
循环前缀504是码元500内的开销。例如，在广域网中，码元500的10％可以是开销(例如，TCP可以是10微秒而TSYM可以是100微秒)。进一步，对于局域网，频调间距(Δ)与广域网的频调间距相比较小(例如，对于与数据相关业务状态)，且因此，可增加FFT窗口(例如，TSYM)，从而减少开销。
可将开销的减少(例如，通过增加码元时间和减少频调间距)与下面所述的局域对等网络中的另一设计约束相平衡(例如，在对等设备发现和控制相关业务期间)。对等设备可能缺少在对等网络中同时发送和接收的能力。例如，可执行对等设备发现使得对等设备在随机时间位置发送签名信号。因此，当对等设备发送其签名信号时，其可能缺少接收由不同对等设备发送的签名信号的能力。因此，由于码元时间TSYM增加，不同对等设备同时发送码元的概率增加，使得一个对等设备更容易错过另一对等设备发送的信号；因此，对等网络在对等设备发现和控制相关业务期间所使用的码元时间短于用于广域网和/或与对等通信相关联的数据相关业务的那些，从而减少来自不同对等设备的交叠发送的概率。
参考图6，示出可在局域对等环境中不同状态期间使用的参数范围的示例图600。根据一个示例，用于对等环境的参数可以是与当前使用可用于对等通信的频谱的广域网相关联的参数的函数。图600描绘与广域网频调间距相关的频调间距范围。对等频调间距可以是广域网频调间距的函数，从而ΔP2P＝f(ΔWAN)，其中，ΔP2P是用于对等网络的频调间距，而ΔWAN是用于广域网的频调间距。例如，ΔP2P＝NΔWAN，其中N是实数。相应地，在范围1中，N≥1(例如，N＝2、4、8、10、12、16……)。在范围1中的频调间距可以用于对等设备发现、控制相关业务等。在范围1中，频调间距长而码元时间短。进一步，范围2可以与用于数据相关业务状态的频调间距相关联，其中范围2可以包括多个频调间距，从而N≤1(例如，N＝1/2、1/4、1/8、1/10、1/12、1/16……)。在范围2中，频调间距小而码元时间长。根据另一个示例，与对等设备发现和控制相关业务相关联的频调间距可比用于数据相关业务的频调空间大几乎5倍。根据进一步的示例，对等设备发现间距和控制相关业务可使用频调间距8ΔWAN(例如，在范围1内)，而频调间距ΔWAN或
Figure A200780003037D00181
(例如在范围2内)可用于数据相关业务；因此，例如，这些频调间距之间的比率可以是8或16。然而，应了解，所要求保护的主题并不限于上述示例。
现在转到图7，示出使用共享频谱以允许通过广域网和对等网络进行通信的系统700。系统700包括无线终端202，其可进一步包括通信器204、状态标识器206、和参数选择器208。通信器204(和/或不同组件(未示出))可允许通过广域网发送和/或接收数据(例如，与基站(未示出)进行通信)。进一步，通信器204可允许通过局域对等网络进行通信。无线终端202可通过任意类型的广域网进行通信(例如，3GPP LTE、3GPP2EV-DO、CDMA-2000、UMTS W-CDMA、GSM、EDGE、WiMax、Flash-OFDM……)。例如，无线终端202可使用正交频分复用-时分双工(OFDM-TDD)模式在广域网上获得和/或发送数据(例如，在第一组时间的上行链路业务，在不同组时间的下行链路业务……)。此外，通信器204允许无线终端202与不同对等设备(例如不同无线终端(未示出))进行通信；然而，例如，无线终端202在以半双工模式通过对等环境进行通信期间可能不能同时发送和接收信号。
进一步，状态标识器206可确定与对等通信相关率的状态(例如，在特定时刻)。状态标识器206可从某些系统源得到时基信息。示例性的源包括发送广播信号(信标，PN……)的广域网基站、局域对等网络中的接入节点、内部时钟、以及卫星(例如GPS)。状态标识器206随后可根据时基信息和时间与状态之间的预定映射关系来确定与特定时刻相关率的状态。此外，参数选择器208可基于所确定的状态来标识用于对等通信的一组参数。例如，当状态标识器206认识到该状态与对等设备发现或控制相关业务相关时，参数选择器208可选择一组参数(例如，较短的码元时间、较大的频调间距……)，其最小化不同对等设备在与无线终端202基本相同的时间进行发送的概率；因此，基于使用该组参数，无线终端202可能就不会错过不同对等设备所传送的这些数据。
无线终端202可进一步包括WAN标识器702，其可确定一频谱带宽是否可用于无线终端202进行对等通信。进一步，WAN标识器702可检测当前使用该频谱带宽的广域网的类型，例如，使用WAN的具体空中接口技术。根据该示例，WAN标识器702可确定该广域网是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702可进一步检测与该可用广域网相关的系统参数。此外，参数选择器208可根据所标识的广域网所使用的空中接口技术(例如，由WAN标识器702所确定的可用广域网的类型)和/或相关联的系统参数来访问在所标识的状态期间用于对等网络的参数数据。此后，用于对等网络的该组参数可用于在与该状态相关联的时间段期间进行发送和/或接收数据。
此外，无线终端202可包括存储器704和处理器706。存储器704可保存指定对应于与对等网络相关联的各种状态的一组参数(例如，一组参数1，一组参数K……)的查找表。进一步，存储器704包括对应于各种类型的广域网的广域网参数。此外，存储器704可保存与确定广域网的身份、检测与该广域网相关联的参数、标识与对等网络相关联的状态、标识和/或导出用于对等网络的参数等相关的指令。此外，处理器706可执行此处所描述的指令和/或函数。
根据一个示例，无线终端202可进入广域网。WAN标识器702可确定该广域网的身份。附加地或替代地，WAN标识器702可检测关于该广域网的信息(例如，广域网的参数)。状态标识器206可确定与局域对等网络相关联的状态。进一步，参数选择器208可使用存储器704中所保存的查找表来选择对等参数(例如，频调间距、码元时间、循环前缀……)以用于通过该局域对等网络进行通信。例如，存储器704中所存储的查找表可指定与所标识的广域网类型和/或状态相关的一个或多个对等参数的值。因此，基于该广域网的身份和所识别的状态，参数选择器208可使用该查找表或预定公式来确定要使用的参数。
作为进一步说明，参数选择器208可基于标识的状态来计算局域对等网络将使用的参数。WAN标识器702可确定用于与该对等网络相同频谱的广域网的WAN参数。例如，WAN标识器702可发现信标、PN(伪随机)序列信号、导频信号或其他广播信号(例如，由基站(未示出)发送的)，其可以是与广域网相关联的签名信号。进一步，WAN标识器702可分析该广播信号以估计与该广域网相关联的WAN参数。根据另一示例，WAN标识器702可从存储器704中所保存的查找表来标识该广域网的类型(例如，所使用的空中接口技术)以及确定与其相关联的WAN参数。然而应了解，所要求保护的主题并不限于上述示例。此后，参数选择器208可根据这些WAN参数以及由状态标识器206所确定的当前状态来导出用于该对等网络的参数。因此，参数选择器208可基于对用于相同频谱中的广域网的WAN参数以及对应于当前对等相关状态的条件的认识来优化对等参数的选择。
如果该对等网络与广域网共存于给定频谱内，则P2P参数可以是WAN参数和P2P状态的函数。根据一个示例，参数选择器208可基于该函数产生P2P参数。根据进一步示例，存储器704中所保存的查找表中可包括描述与WAN参数和/或状态相关的P2P参数的信息。根据说明，假设WAN和P2P网络双方都使用基于OFDM的空中接口技术。可选择P2P参数使得ΔP2P＝f(ΔWAN)，其中ΔP2P是用于对等网络的频调间距，而ΔWAN是用于广域网的频调间距。例如，ΔP2P＝NΔWAN，其中N是实数。当状态标识器206确定该对等网络环境与对等设备发现状态或控制相关业务状态相关联时，N≥1(例如，N＝2、4、8、10、12、16……)。在另一示例中，状态标识器206可以识别与该对等环境相关联的数据相关业务状态；因此，N≤1(例如，N＝1/2、1/4、1/8、1/10、1/12、1/16……)。此外，选择循环前缀的长度使得TCP_P2P＝g(TCP_WAN)(例如， T CP _ P 2 P = 1 K ( T CP _ WAN ) , 其中K＝2，4，8，10，12，16……)。在一个或多个实施例中，当N对于不同状态不同时，K对于所有状态是相同的。例如，对于对等设备发现状态或控制相关业务状态，N＝8，而对于数据相关业务状态，N＝1/2。然而，对于这三种状态，K＝8。因此，在各种实施例中，用于对等网络的频调间距可以比用于广域网的频调间距大N倍，而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所使用的特定空中接口。例如，如果WAN使用3GPP LTE空中接口技术，或如果WAN使用WiMax空中接口技术，则函数f或g可以不同，即使两种技术都是基于OFDM的。此外，根据说明，假设P2P网络使用基于OFDM的空中接口技术，但WAN网络使用诸如UMTS W-CDMA等基于CDMA的空中接口技术。可选择P2P参数使得ΔP2P＝h(FCWAN)，其中FCWAN可表示UMTS W-CDMA中所使用的系统参数(例如，CDMA码片速率)。
参考图8—10，示出关于基于所标识的状态来选择用于对等网络中进行通信的参数的方法。同时，出于解释简化的目的，这些方法被示出和描述为一系列动作，应明白和了解，这些方法并不限于这些动作的顺序，由于根据一个或多个实施例，某些动作与此处所示出和描述的其它动作可以以不同的顺序和/或同时发生。例如，本领域的技术人员将明白和了解，一种方法可替代地表示为诸如状态表中的一系列互相关的状态或事件。此外，根据一个或多个实施例，实现一种方法并不需要所示出的所有动作。
参考图8，示出便于选择局域对等网络中的参数的方法800。在802处，第一组参数可用于对等网络中的第一状态。例如，这些参数可与频调间距、码元时间、循环前缀等相关。第一组参数可用于在与第一状态相关联的时间周期在对等网络上发送和/或接收数据。在804处，第二组参数可用于对等网络中的第二状态。第二组参数可用于在对应于第二状态的时间周期内在对等网络上发送和/或获得数据。各种状态可与通过对等网络的通信相关联。例如，对等通信可使用对等设备发现状态、控制相关业务状态、数据相关业务状态、寻呼状态等。此外，不同状态也可使用不同组参数。作为示例，可优化对等设备发现和控制相关业务以减少和/或管理不同对等设备的发送之间的干扰；因此，这些状态可使用包含较短码元时间和较长频调间距的一组参数。根据另一示例，数据相关业务可平衡减少开销的参数(例如，与循环前缀相关联的)，因为每个对等设备在与该状态相关联的时间帧期间或者发送或者接受数据，而不进行切换。因此，用于数据相关业务状态的一组参数可包含较长的码元时间和较小的频调间距，其降低了与循环前缀相关联的整个码元时间的百分比从而减少开销。
现在转到图9，示出便于标识用于通过局域对等网络进行通信的参数的方法900。在902处，可标识与对等通信相关联的状态。用于对等通信的状态可在预定时刻(例如，基于预定公式所确定的)发生。进一步，对等网络内的对等设备可以被同步(例如，基于接收到的信号)，且因此，每个对等设备都可以识别与对等设备发现、数据相关业务、控制相关业务、寻呼等相关联的时间周期。根据说明，可标识当前时间以及可确定对应于当前时间的状态。因此，例如，该状态可基于公式来计算，从存储器中所保存的查找表中检索，检测等等。在904处，可根据该状态来访问用于对等通信的一组参数。根据一个示例，可从存储器中所保存的查找表中获得这些参数中的一个或多个。根据另一示例，可至少部分地基于该状态来计算这些参数中的一个或多个。进一步，该对等网络可与广域网共享频谱。因此，该组参数可以是状态以及与该广域网相关联的不同参数的函数。用于对等通信的一组参数可用于在该对等网络上发送和/或接收数据。作为示例，用于对等设备发现状态或控制相关业务状态的一组参数可减少半双工对等设备在该第一对等设备自己正在发送时错过第二对等设备所发送的信号的概率。根据另一示例，用于数据相关业务状态的一组参数可通过包括较长的码元时间和/或较小的频调间距来减少开销。
转到图10，示出便于基于状态和广域网类型(例如空中接口技术)来标识对等参数的方法1000。在1002处，可标识对等网络的状态。例如，可基于时间值来识别与对等设备发现、控制相关业务、数据相关业务等相关联的状态。在1004处，可标识与该对等网络共享带宽的广域网的类型。例如，该广域网可使用基于OFDM的空中接口技术(例如，3GPP LTE、WiMax、Flash-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……)。此外，可确定WAN参数，其中WAN参数可涉及用于基于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的空中接口技术的CDMA码片速率。在1006处，可基于对等网络的状态和广域网的类型来获取用于对等网络的参数。例如，可基于该状态和WAN参数来导出用于该对等网络的参数。进一步，可基于该状态和广域网中所使用的空中接口技术的类型从存储器中所保存的查找表中检索到这些对等参数。
应了解，根据本文所述的一个或多个方面，可关于基于对等网络的状态来确定用于对等通信的参数做出推论。当此处所使用的，术语“推断”或“推论”一般指通过事件和/或数据所捕获的一组观察对系统、环境和/或用户的状态进行推理或推断的过程。例如，可使用推论来标识具体上下文或动作，或可生成状态上的概率分布。推论可以是盖然论的——即，相关状态上的概率分布的计算基于对数据和事件的考虑。推论也可指用于从一组事件和/或数据中来组成较高级事件的技术。这种推论导致从一组观察到的事件和/或存储的事件数据中构成新的事件或动作，无论这些事件是否在紧密时间相似性中互相关，且无论这些事件和数据是否来自一个或多个事件和数据源。
根据一个示例，上述一种或多种方法可包括做出关于确定与通过对等网络进行通信结合使用的参数的推论。根据另一示例，可关于基于状态和/或利用与对等网络共享的频谱的广域网类型来选择优化参数做出推论。应了解，上述示例本质上是说明性的，且并非旨在限制可结合此处所述各实施例和/或方法做出的推论的数量或做出这种推论的方式。
图11描绘根据各方面实现的包括多个小区：小区I 1102、小区M 1104的示例通信系统1100。注意，如小区边界区域1168所指示的，相邻小区1102、1104稍微交叠，从而产生相邻小区中的基站所发送的信号之间的信号干扰的可能性。系统1100的每个小区1102、1104包括三个扇区。根据各方面，没有被划分成多个扇区的小区(N＝1)、具有两个扇区的小区(N＝2)和具有多于3个扇区的小区(N>3)也是可能的。小区1102包括第一扇区，扇区I 1110、第二扇区，扇区II 1112、和第三扇区，扇区III 1114。每个扇区1110、1112、1114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。
扇区边界区域提供相邻扇区中的基站发送的信号之间的信号干扰的可能性。线1116表示扇区I 1110与扇区II 1112之间的扇区边界区域；线1018表示扇区II 1112与扇区III 1114之间的扇区边界区域；线1120表示扇区III 1114与扇区I 1110之间的扇区边界区域。类似地，小区M 1104包括第一扇区，扇区I 1122、第二扇区，扇区II 1124，和第三扇区，扇区III 1126。线1128表示扇区I 1122与扇区II 1124之间的扇区边界区域；线1130表示扇区II 1124与扇区III 1126之间的扇区边界区域；线1132表示扇区III 1126与扇区I 1122之间的扇区边界区域。小区I 1102包括基站(BS)，基站I 1106，以及每个扇区1110、1112、1114中的多个端节点(EN)(例如，无线终端)。扇区I 1110包括分别通过无线链路1140、1142耦合到BS 1106的EN(1)1136和EN(X)1138；扇区II 1112包括分别通过无线链路1148、1150耦合到BS 1106的EN(1？1144和EN(X？1146；扇区III 1114包括分别通过无线链路1156、1158耦合到BS 1106的EN(1拻)1152和EN(X拻)1154。类似地，小区M 1104包括基站M 1108、以及每个扇区1122、1124、1126中的多个端节点(EN)。扇区I 1122包括分别通过无线链路
Figure A200780003037D0024105715QIETU
 耦合到基站BS M 1108的EN(1)
Figure A200780003037D0024105733QIETU
 EN(X)
Figure A200780003037D0024105742QIETU
 扇区II 1124包括分别通过无线链路
Figure A200780003037D0024105753QIETU
 
Figure A200780003037D0024105803QIETU
合到BS M 1108的EN(1？
Figure A200780003037D0024105815QIETU
 EN(X？
Figure A200780003037D0024105827QIETU
 扇区3 1126包括分别通过无线链路
Figure A200780003037D0024105856QIETU
 
Figure A200780003037D0024105853QIETU
合到基站BS 1108的EN(1拻)
Figure A200780003037D0024105906QIETU
 EN(X拻)
Figure A200780003037D0024105918QIETU
系统1100还包括分别通过网络链路1162、1164耦合到BS I1106和BS M1108的网络节点1160。网络节点1160还通过网络链路1166耦合到其他网络节点，例如，其他基站、AAA服务器节点、中间节点、路由器等，以及因特网。网络链路1162、1164、1166可以是，例如，光纤电缆。每个端节点，例如EN(1)1136可以是包括发射机和接收机的无线终端。无线终端，例如EN(1)1136可移动通过系统1100，并可与该EN当前所定位的小区内的基站通过无线链路进行通信。无线终端(WT)，例如EN(1)1136可通过基站，例如BS 1106，与对等节点，例如系统1100内部或外部的其他WT进行通信。WT，例如EN(1)1136可以是诸如蜂窝电话、具有无线调制解调器的个人数字助理等移动通信设备。各个基站使用一种方法来执行用于带状码元周期的频调子集分配，该方法不同于在剩余码元周期，例如非带状码元周期中用于分配频调和确定频调跳变的方法。无线终端使用该频调子集分配方法以及从基站接收到的信息，例如，基站斜率ID、扇区ID信息，来确定它们可用于在具体的带状码元周期接收数据和信息的频调。根据各种方面，构成该频调子集分配序列以跨越相应频调来传播扇区间和小区间的干扰。
通信系统1100也可支持局域对等通信。例如，局域对等通信和通过广域网(例如蜂窝基础设施网络)的通信两者可使用一共同频谱。无线终端可通过诸如对等网络1170、1172、和1174等局域对等网络与其他对等设备进行通信。虽然示出三个对等网络1170—1174，但是应了解，可支持任意数量、大小、形状等的对等网络。例如，每个对等网络1170—1174可支持无线终端之间直接的信号传递。进一步，每个对等网络1170—1174可包括在相似地理区域内(例如，在相互范围之内)的无线终端。例如，EN(1)1136可通过局域对等网络1170与EN(X)1138进行通信。然而应了解，这些无线终端无需与相同扇区和/或小区相关联以被包含在一共同对等网络中。进一步，对等网络可交叠(例如，EX(X？1146可利用对等网络1172和1174)。此外，对等网络可能不支持无线终端。在广域网和对等网络交叠的地方，无线终端可使用广域网和/或对等网络(例如同时或依次)。此外，无线终端可无缝地转换或同时利用这些网络。因此，无线终端无论发送和/或接收都可选择性地使用这些网络中的一个或多个来优化通信。
图12示出根据各方面的示例基站1200。基站1200实现频调子集分配序列，为该小区的相应不同扇区类型生成不同的频调子集分配序列。基站1200可用作图11的系统1100的基站1106、1108中的任一个。基站1200包括由总线1209耦合在一起的接收机1202、发射机1204、处理器1206，例如CPU、输入/输出接口1208以及存储器1210，各种元件1202、1204、1206、1208和1210可在总线上交换数据和信息。
耦合到接收机1202的扇区化天线1203用于从来自基站的小区中的每个扇区的无线终端发送接收数据和其他信号，例如，信道报告。耦合到发射机1204的扇区化天线1205用于向基站的小区的每个扇区中的无线终端1300(参见图3)发送数据和其他信号，例如，控制信号、导频信号、信标信号等。在各方面，基站1200可使用多个接收机1202和多个发射机1204，例如，每个扇区使用一个单独的接收机1202以及每个扇区使用单独的发射机1204。处理器1206可以是，例如，通用中央处理单元(CPU)。处理器1206在存储器1210中所存储的一个或多个线程1218的指导下控制基站1200的操作并实现这些方法。I/O接口1208提供到其他网络节点的连接，将BS 1200耦合到其他基站、接入路由器、AAA服务节点等其他网络，以及因特网。存储器1210包括例程1218和数据/信息1220。
数据/信息1220包括数据1236、包括下行链路带状码元时间信息1240和下行链路频调信息1242的频调子集分配序列信息1238、以及包括多组WT信息：WT 1信息1246和WT N信息1260的无线终端(WT)数据/信息1244。每组WT信息，例如，WT 1信息1246包括数据1248、终端ID 1250、扇区ID 1252、上行链路信道信息1254、下行链路信道信息1256，以及模式信息1258。
程1218包括通信例程1222和基站控制例程1224。基站控制例程1224包括调度器模块1226和信令例程1228，该信令例程1228包括用于带状码元周期的频调子集分配例程1230、用于剩余码元周期，例如非带状码元周期的其他下行链路频调分配跳变例程1232和信标例程1234。
数据1236包括将被送到发射机1204的编码器1214用于在发送到WT之前进行编码的发送数据和在接收之后已经通过接收机1202的解码器1212处理过的来自WT的接收数据。下行链路带状码元时间信息1240包括帧同步结构信息，例如超时隙、信标时隙和极度时隙结构信息和指定一给定码元周期是否是带状码元周期的信息，且如果是，则还包括带状码元周期的索引以及该带状码元是否是基站用于截取频调子集分配序列的重置点。下行链路频调信息1242包括包含分配给基站1200的载波频率、频调的数量和频率、和将被分配给带状码元周期的频调子集的一组信息，以及其他小区和扇区具体值，诸如斜率、斜率索引和扇区类型。
数据1248可包括WT 1 1300从对等节点接收到的数据、WT 1 1300期望发送到对等节点的数据、以及下行链路信道质量报告反馈信息。终端ID1250是标识WT 1 1300的基站1200分配的ID。扇区ID 1252包括标识WT1 1300正在其中进行操作的扇区的信息。扇区ID 1252可用于，例如，确定扇区类型。上行链路信道信息1254包括标识由调度器1226分配给WT 11300使用的信道片段，例如，用于数据的上行链路业务信道片段、用于请求的专用上行链路控制信道、功率控制、时基控制等的信息。分配给WT 11300的每个上行链路信道包括一个或多个逻辑频调，每个逻辑频调跟随上行跳变序列。下行链路信道信息1256包括标识由调度器1226分配给WT 11300用于承载数据和/或信息的信道片段，例如，用于用户数据的下行链路业务信道片段的信息。分配给WT 1 1300的每个下行链路信道包括一个或多个逻辑频调，每个频调跟随下行链路跳跃序列。模式信息1258包括标识WT 1 1300的操作状态的信息，例如休眠、保持、工作。
通信例程1222控制基站1200执行各种通信操作以及实现各种通信协议。基站控制例程1224用于控制基站1200执行基本基站功能任务，例如信号生成和接收、调度，以及实现某些方面的方法的步骤，包括在带状码元期间使用频调子集分配序列向无线终端发送信号。
信令例程1228使用解码器1212来控制接收机1202的操作，并使用编码器1214来控制发射机1204的操作。信令例程1228负责控制发送数据1236和控制信息的产生。频调子集分配例程1230使用这方面的方法并使用包括下行链路带状码元时间信息1240和扇区ID 1252的数据/信息1220来构成用于带状码元周期的频调子集。这些下行链路频调子集分配序列对于一个小区中的每个扇区类型是不同的，且对于相邻小区也是不同的。WT1300根据下行链路频调子集分配序列在带状码元周期中接收信号；基站1200使用相同的下行链路频调子集分配序列来生成发送信号。其他下行链路频调分配跳变例程1232使用包括下行链路频调信息1242、和下行链路信道信息1256的信息来构成用于除带状码元周期之外的码元周期的下行链路频调跳变序列。这些下行链路数据频调跳变序列在小区的各扇区上是同步的。信标例程1234控制信标信号的发送，例如，集中在一个或几个频调上的相对高功率信号的信号，其可用于同步目的，例如，同步下行链路信号的帧时序结构，以及针对极度时隙边界的频调子集分配序列。
图13示出可用作图11中所示系统1100的无线终端(例如端节点、移动设备……)中的任意一个，例如EN(1)1136的示例无线终端(例如，端节点、移动设备……)1300。无线终端1300实现频调子集分配序列。无线终端1300包括由总线1310耦合在一起的包括解码器1312的接收机1302、包括编码器1314的发射机1304、处理器1306、以及存储器1308，各元件1302、1304、1306、1308可在总线上交换数据和信息。用于接收来自基站1100(和/或不同无线终端)的信号的天线1303耦合到接收机1302。用于，例如向基站1200(和/或不同无线终端)发送信号的天线1305耦合到发射机1304。
处理器1306(例如，CPU)通过执行例程1320以及使用存储器1308中的数据/信息1322来控制无线终端1300的操作并实现各种方法。
数据/信息1322包括用户数据1334、用户信息1336、频调子集分序列信息1350、以及伙伴对等设备列表1356。用户数据1334可包括去向对等节点且将被路由到解码器1314用于在由发射机1304发送到基站1200之前进行编码的数据、以及从基站1100接收到的已由接收机1302中的解码器1312处理过的数据。用户信息1336包括上行链路信道信息1338、下行链路信道信息1340、终端ID信息1342、基站ID信息1344、扇区ID信息1346、以及模式信息1348。上行链路信道信息1338包括标识由基站1200分配给无线终端1300在向基站1200发送时使用的上行链路信道片段的信息。上行链路信道可包括上行链路业务信道、专用上行链路控制信道，例如，请求信道、功率控制信道和时基控制信道。每个上行链路信道包括一个或多个逻辑频调，每个逻辑频调跟随上行链路频调跳变序列。这些上行链路跳变序列在一个小区的每个扇区类型之间以及在相邻小区之间都是不同的。下行链路信道信息1340包括标识由基站1200分配给WT 1300在BS 1200向WT 1300发送数据/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业务信道和分配信道，每个下行链路信道包括一个或多个逻辑频调，每个逻辑频调跟随下行链路跳变序列，其在一个小区的每个扇区之间是同步的。
用户信息1336还包括是基站1200分配的标识的终端ID信息1342、标识WT已经与其建立通信的具体基站1200的基站ID信息1344、以及标识WT 1300当前所在小区的具体扇区的扇区ID信息1346。基站ID 1344提供小区斜率值而扇区ID信息1346提供扇区索引类型；该小区斜率值和扇区索引类型可用于导出频调跳变序列。也包含在用户信息1336中的模式信息1348标识WT 1300是否处于休眠模式、保持模式、或工作模式。
频调子集分配序列信息1350包括下行链路带状码元时间信息1352和下行链路频调信息1354。下行链路带状码元时间信息1352包括帧同步结构信息例如超时隙、信标时隙和极度时隙结构信息，以及指定给定码元周期是否是带状码元码周期的信息，且如果是，则还包括带状码元周期的索引以及该带状码元是否是由基站用于截取频调子集分配序列的重置点的信息。下行链路频调信息1354包括具有分配给基站1200的载波频率、频调的数量和频率、和将分配给带状码元周期的频调子集的一组信息、以及诸如斜率、斜率索引和扇区类型的其他小区和扇区具体值。
例程1320包括通信例程1324、无线终端控制例程1326、状态标识例程1328、WAN类型确定例程1330、以及参数选择例程1332。通信例程1324控制WT 1300所使用的各种通信协议。例如，通信例程1324可允许通过广域网(例如使用基站1200)和/或局域对等网络(例如，直接与不同无线终端)进行通信。无线终端控制例程1326控制包括对接收机1302和发射机1304的控制的基本无线终端1300功能。状态标识例程1328控制确定与对等网络相关联的状态。例如，状态标识例程1328可允许将无线终端与共同对等网络相关联的不同无线终端进行同步。进一步，状态标识例程1328可结合标识状态来使用查找表1356。WAN类型确定例程1330控制与该对等网络共享带宽的广域网的类型(例如空中接口标识技术)的标识。进一步，WAN类型确定例程1330可使用查找表1356。参数选择例程1332控制用于对等通信的一组参数。例如，可标识诸如频调间距、循环前缀、码元时间等参数。此外，参数选择例程1332可使用查找表1356。
参考图14，示出允许在对等网络上进行通信的系统1400。例如，系统1400可至少部分地驻留在无线终端内。应了解，系统1400被示为包括功能块，其可以是表示由处理器、软件、或其组合(例如，固件)实现的功能的功能块。系统1400包括可联合动作的电子组件的逻辑组1402。例如，逻辑组1402可包括用于标识与对等通信1404相关联的状态的电子组件。例如，状态(例如，对等设备发现、控制相关业务、数据相关业务、寻呼……)可在预定时刻与该对等网络相关联。进一步，可同步对等设备以具有对时间的共同理解。因此，可基于时间来确定该状态。进一步，逻辑组1402可包括用于访问用于对等通信的作为状态1406的函数的一组参数的电子元件。该对等网络可使用与广域网共享的带宽。根据一个示例，可导出用于对等通信的参数(例如，基于该状态、广域网的类型、和/或对应于广域网的参数)。根据进一步的示例，可从查找表中标识对等网络参数。此外，系统1400可以包括存储器1408，其保存用于执行与电子组件1404和1406相关联的功能的指令。虽然被示为在存储器1408外部，但是应了解，电子组件1404和1406中的一个或多个可存在于存储器1408内部。
应了解，本文所述实施例可在硬件、软件、固件、中间件、微代码、或其任意组合中实现。对于硬件实现，处理单元可在一个或多个应用专用集成电路(ASIC)、数字信号处理器(DSP)、数字信号处理设备(DSPD)、可编程逻辑器件(PLD)、现场可编程门阵列(FPGA)、处理器、控制器、微控制器、微处理器、设计用于执行本文所述功能的其他电子单元，或其组合中实现。
当这些实施例在软件、固件、中间件或微代码、程序代码或代码段中实现时，它们可存储在诸如存储器组件等机器可读介质中。代码段可表示过程、函数、子程序、程序、例程、子例程、模块、软件包、类、或指令的任意组合、数据结构、或程序语句。可通过传递和/或接收信息、数据、变量、参数、或存储器内容将代码段耦合到另一代码段或硬件电路。可使用包括存储器共享、消息传递、令牌传递、网络传输等任意合适手段来传递、转发或发送送信息、变量、参数、数据等。
对于软件实现，本文所述技术可使用执行本文所述功能的模块(例如，过程、函数等)来实现。这些软件代码可存储在存储器单元中并由处理器执行。存储器单元可实现在处理器内部或处理器外部，在任一情况下，可通过本领域已知的各种装置将存储器可通信地耦合到处理器。
上述内容包括一个或多个实施例的各示例。当然，不可能为了描述上述实施例而描述每个可想到的组件或方法的组合，但本领域的普通技术人员可认识到，各实施例的许多进一步组合和改变都是可能的。因此，所述实施例旨在涵盖落入所附权利要求的精神和范围之内的所有这样的变化、修改和改变。此外，对于将术语“包括”用于详细描述或权利要求中的范围，这些术语旨在是包括性的，类似于术语“包括”用作权利要求中的连接词时解释“包括”的方式。

Claims (46)

1.一种便于选择局域对等网络中的参数的方法，包括：
对于对等网络中的第一状态使用第一组参数；以及
对于所述对等网络中的第二状态使用第二组参数。
2.如权利要求1所述的方法，其特征在于，所述局域对等网络使用基于OFDM的空中接口技术且所述参数涉及频调间距、码元时间、和/或循环前缀。
3.如权利要求2所述的方法，其特征在于，所述第一状态是对等设备发现状态或控制相关业务状态，且所述第二状态是数据相关业务状态。
4.如权利要求3所述的方法，其特征在于，所述第一组参数包括比所述第二组参数更短的码元时间和更大的频调间距。
5.如权利要求3所述的方法，其特征在于，所述第一组参数和所述第二组参数包括类似的循环前缀。
6.如权利要求1所述的方法，其特征在于，在预定时段期间将所述第一组参数用于所述第一状态，并在不同的预定时段期间将所述第二组参数用于所述第二状态。
7.如权利要求1所述的方法，其特征在于，进一步包括标识所述第一状态或所述第二状态是否与当前时间相关联。
8.如权利要求7所述的方法，其特征在于，进一步包括从系统源导出所述当前时间，并使用所述状态与所述当前时间之间的预定映射来确定与所述当前时间相关联的状态。
9.如权利要求8所述的方法，其特征在于，所述系统源是来自广域网的基站或接入点的广播信号、来自GPS卫星的卫星信号，以及来自内部时钟的时钟信号中的一个。
10.如权利要求7所述的方法，其特征在于，进一步包括根据所标识出的状态来访问参数。
11.如权利要求10所述的方法，其特征在于，访问所述参数进一步包括从存储器中所保存的查找表中检索对应于所述标识出的状态的所述参数。
12.如权利要求10所述的方法，其特征在于，访问所述参数进一步包括至少部分地基于所述标识出的状态来计算所述参数。
13.如权利要求1所述的方法，其特征在于，所述对等网络与广域网共享带宽。
14.如权利要求13所述的方法，其特征在于，所述第一组参数和所述第二组参数是与所述广域网相关的参数的函数。
15.一种无线通信装置，包括：
存储器，其保存与标识同对等通信相关联的状态以及根据所标识出的状态来确定用于所述对等通信的一组参数相关的指令；以及
耦合到所述存储器的处理器，所述处理器被配置成执行所述存储器中所保存的所述指令。
16.如权利要求15所述的无线通信装置，其特征在于，所述对等通信利用基于OFDM的空中接口技术，且所述一组参数与频调间距、码元时间和/或循环前缀相关。
17.如权利要求16所述的无线通信装置，其特征在于，所述存储器进一步保存用于根据所述状态与时间周期之间的预定映射来识别与对等设备发现、数据相关业务、以及控制相关业务相关联的所述时段的指令。
18.如权利要求15所述的无线通信装置，其特征在于，所述存储器进一步保存用于将所述状态与位于通信范围内的对等设备进行同步的指令。
19.如权利要求18所述的无线通信装置，其特征在于，所述存储器进一步保存用于从系统源导出时基信息以及使用所述状态与所述时基信息之间的预定映射来确定与所述时基信息相关联的状态的指令。
20.如权利要求19所述的无线通信装置，其特征在于，所述系统源是来自广域网的基站或接入节点的广播信号、来自GPS卫星的卫星信号、和来自内部时钟的时钟信号中的一个。
21.如权利要求15所述的无线通信装置，其特征在于，所述存储器进一步保存用于基于预定公式来确定所述状态的指令。
22.如权利要求15所述的无线通信装置，其特征在于，所述存储器进一步保存包含用于所述对等网络的对应于多个状态的参数数据的查找表。
23.如权利要求22所述的无线通信装置，其特征在于，所述存储器进一步保存用于基于所述标识出的状态从所述查找表中检索参数数据的指令。
24.如权利要求15所述的无线通信装置，其特征在于，所述存储器进一步保存用于根据所述标识出的状态来导出所述参数中的至少一个的指令。
25.如权利要求15所述的无线通信装置，其特征在于，所述存储器进一步保存用于标识与所述对等通信通过的对等网络共享带宽的广域网的空中接口技术的指令。
26.如权利要求25所述的无线通信装置，其特征在于，所述存储器进一步保存用于基于所标识出的所述广域网的空中接口技术来选择所述参数中的至少一个的指令。
27.一种允许局域对等网络上的通信的无线通信装置，包括：
用于标识与对等通信相关联的状态的装置；以及
用于根据所述状态访问用于所述对等通信的一组参数的装置。
28.如权利要求27所述的无线通信装置，其特征在于，所述对等通信使用基于OFDM的空中接口技术且所述一组参数与频调间距、码元时间、和/或循环前缀相关。
29.如权利要求28所述的无线通信装置，其特征在于，进一步包括用于当所述状态与对等设备发现或控制相关业务相关时选择比当所述状态与数据相关业务相关时更短的码元时间和更大的频调间距的装置。
30.如权利要求28所述的无线通信装置，其特征在于，进一步包括用于当所述标识出的状态是对等设备发现状态、控制相关业务状态、或数据相关业务状态时选择类似的循环前缀的装置。
31.如权利要求27所述的无线通信装置，其特征在于，进一步包括用于基于当前时间来标识所述状态的装置。
32.如权利要求31所述的无线通信装置，其特征在于，进一步包括：
用于基于系统源来同步所述当前时间的装置；以及
用于使用所述状态与所述当前时间之间的预定映射来确定与所述当前时间相关联的状态的装置。
33.如权利要求32所述的无线通信装置，其特征在于，所述系统源是来自广域网的基站或接入节点的广播信号、来自GPS卫星的卫星信号、以及来自内部时钟的时钟信号中的一个。
34.如权利要求27所述的无线通信装置，其特征在于，进一步包括用于标识与同所述局域对等网络共享频谱的广域网相关联的空中接口技术的类型的装置。
35.如权利要求34所述的无线通信装置，其特征在于，进一步包括用于基于所述状态和所述空中接口技术来选择所述一组参数的装置。
36.如权利要求27所述的无线通信装置，其特征在于，进一步包括用于基于所述标识出的状态来计算所述一组参数中的至少一个参数的装置。
37.如权利要求27所述的无线通信装置，其特征在于，进一步包括用于基于所述标识出的状态从存储器中所保存的查找表中检索所述一组参数中的至少一个参数的装置。
38.一种其上存储了机器可执行指令的机器可读介质，所述指令用于：
确定对等网络的状态；
确定与所述对等网络共享共同带宽的广域网的类型；以及
基于所述状态和所述广域网的类型来获取用于所述对等网络的参数数据。
39.如权利要求38所述的机器可读介质，其特征在于，所述机器可执行指令进一步包括基于预定公式和同步的时间来导出所述状态。
40.如权利要求39所述的机器可读介质，其特征在于，所述机器可执行指令进一步包括基于从系统源所获得的信息来同步所述时间以及使用所述状态与所述时间之间的预定映射来确定与所述时间相关联的状态。
41.如权利要求40所述的机器可读介质，其特征在于，所述系统源是来自广域网的基站或接入节点的广播信号、来自GPS卫星的卫星信号、以及来自内部时钟的时钟信号中的一个。
42.如权利要求38所述的机器可读介质，其特征在于，所述机器可执行指令进一步包括获得与所述广域网相关的参数以及根据所述广域网相关参数来获取参数数据。
43.如权利要求38所述的机器可读介质，其特征在于，所述对等网络使用基于OFDM的空中接口技术，且所述参数数据涉及频调间距、码元时间和/或循前缀。
44.如权利要求43所述的机器可读介质，其特征在于，所述机器可执行指令进一步包括当所述标识出的状态与对等设备发现或控制相关业务相关时获取包括比当所述标识出的状态与数据相关业务相关时更短的码元时间和更大的频调间距的参数数据。
45.如权利要求43所述的机器可执行介质，其特征在于，所述机器可执行指令进一步包括当所述所标识的状态是对等设备发现状态、控制相关业务状态、以及数据相关业务状态时获得包含类似循环前缀的参数数据。
46.一种无线通信系统中的装置，包括：
处理器，所述处理器被配置成：
确定与经由对等网络的通信相关联的状态；以及
根据所述状态获得用于经由所述对等网络进行的通信的一组参数。
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