CN104145524A - 探测参考信号增强以支持上行链路协作多点 - Google Patents

探测参考信号增强以支持上行链路协作多点 Download PDF

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CN104145524A
CN104145524A CN201380009647.4A CN201380009647A CN104145524A CN 104145524 A CN104145524 A CN 104145524A CN 201380009647 A CN201380009647 A CN 201380009647A CN 104145524 A CN104145524 A CN 104145524A
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wireless communication
communication equipment
burst
class
cyclic shift
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CN104145524B (zh
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A·帕帕塔纳西乌
S·阿齐兹
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Apple Inc
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Intel Corp
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Abstract

本文中描述了用于探测参考信号的增强以支持上行链路协作多点的系统和技术。基于用户设备与由无线网络设备所服务的并为所述用户设备进行服务的小区的小区边缘之间的关系，探测参考信号可以被分配给用户设备。

Description

探测参考信号增强以支持上行链路协作多点
优先权要求
本申请要求享有于2012年8月27日递交的、美国申请序列No.13/595,640的优先权，其要求享有于2012年1月27日递交的、美国临时专利申请序列No.61/591,641的优先权，这两个专利申请特此以引用的方式整体并入本文。
背景技术
无线网络技术有时可以使用信号来帮助确定两个设备之间的无线电链路特性。在一个示例中，蜂窝无线电网络可以向用户设备(UE)分配诸如探测参考信号(SRS)这样的信号以用于链路估计。
在一个示例中，根据第三代合作伙伴计划(3GPP)标准族(例如，3GPP长期演进版本10、3GPP标准36.21X vb.x.x，版本11及以后版本)的网络，可以使用许多正交基序列作为SRS。在一个示例中，网络可以使用Zadoff-Chu基序列，这是因为其在无线电通信中提供恒定振幅的电磁信号并且当其被循环地移位时也是正交的。循环移位通常是对基础基序列的一定数量的平移。例如，给定序列{a,b,c,d}，循环移位两次会产生序列{c,d,a,b}。这些特性提供了稳健的链路质量评估，并允许向不同的UE分配不同的序列以便于区分UE。在3GPP长期演进(LTE)兼容网络中，Zadoff-Chu基序列的循环扩展可以用于将基序列对准到物理链路特性，例如SRS资源块(RB)的分配。这样的循环扩展降低了序列的正交性质。在这种情况下，序列的正交性可以被称为准正交。然而，如在本文中所使用的，正交序列的定义包括准正交序列(即，这些术语可以互换地使用)。
在一个示例中，一些无线网络可以使用协作多点(CoMP)接收以增强性能。CoMP可以涉及两个或更多无线网络设备的使用以接收无线信号并协调所接收的信号以增加数据完整性。为了改善CoMP的效率，一些无线网络可以增加来自发射器(例如，UE)的信号发送以便于促进对所接收的信号的协调。在一个示例中，例如长期演进(LTE)版本103GPP标准，可以通过更频繁(例如以周期或非周期的方式进行)的探测来实现所增加的信号发送。
附图说明
在附图中，其并不必要按比例绘制，相同的数字可描述不同视图中的类似部件。具有不同数字后缀的相同数字可以表示类似部件的不同实例。附图以示例而非限制的方式总体上示出了在本文档中所讨论的各个实施例。
图1示出了根据实施例的用于为UE选择探测参考信号的系统的示例。
图2示出了根据实施例的协作多点系统的示例。
图3示出了根据实施例的用于为UE选择探测参考信号的方法的示例。
图4是示出了机器的示例的框图，在该机器上可以实现一个或多个实施例。
具体实施方式
在CoMP情境下，UE可以向两个无线网络设备接收器提供探测。对于非主要无线网络接收器，对UE的探测的接收可以被在其自己的小区中的UE所干扰，以及被由该非主要无线网络接收器所服务的小区中的UE所干扰。如上所述，可以通过增加频率来减少干扰，UE可被给予机会来以增加的频率传输它们的探测信号序列。然而，这些增加的信号发送引起额外的开销并从而降低了物理资源的使用效率。
增加通过UE的探测的频率的替代方案是扩展信号序列的循环移位数以复用额外的UE。即，通过扩充信号序列的池，接收无线网络设备可以更容易地区分UE并实现更可靠的链路质量估计。利用对基础基序列的额外循环移位可以实现以下目标：改进链路估计而不需要额外的网络资源开销。然而，在某些无线电条件下，增加循环移位的数量会导致源自给定基序列的SRS中的正交性的降低。该降低的正交性可以增加UE间的干扰。
为了解决上述所讨论的问题，可以使用对循环移位的基序列的选择性使用。在示例中，可以基于UE在小区内的和相对于小区边缘的逻辑位置，向UE分配不同的循环移位。例如，相比于不在小区边缘位置中的UE，可以向处在小区边缘位置中的UE分配更大循环移位的信号序列。在示例中，利用由基序列的更大循环移位所生成的额外信号序列，小区边缘UE可以在同样的无线电资源上被复用。在示例中，可以向复用的UE分配这些额外信号序列以增加或甚至最大化正交性。从而，在小区边缘处可以实现链路估计的增强质量，而不会对非小区边缘的UE可能减少链路估计。
图1示出了根据实施例的用于为UE选择探测参考信号的系统100的示例。系统100可以包括无线网络设备105以及两个UE 120和125。无线网络设备105可以包括边缘确定模块110和分配模块115。在示例中，根据3GPP标准族，无线网络设备包括eNodeB。图1还示出了由无线网络设备105所服务的小区的区域130、135和140。
边缘确定模块110可以被设置为通过无线网络设备105所服务的小区确定UE 120的逻辑位置。可以相对于小区的边缘来确定该逻辑位置。该位置被认为是“逻辑的”，这是因为UE 120的绝对位置可能会相对于无线网络设备105或其它地标而随时间改变，而UE 120的逻辑位置可以保持不变。在示例中，边缘确定模块110可以被设置为利用在无线网络设备105处所测量的UE 120的信号强度接收功率(SSRP)来确定UE 120相对于小区边缘的逻辑位置。在示例中，边缘确定模块110可以被设置为当SSRP低于预先确定的阈值时，向UE 120分配“小区边缘”这个逻辑位置。
在示例中，逻辑位置可以从代表小区内的多个嵌套区域(例如，区域130、135和140)的组中来选择。在示例中，多个嵌套区域之间的边界可以由SSRP阈值来定义。在示例中，多个嵌套区域之间的边界可以由地理地标来定义。这样的地标可以包括市政边界、由维度或经度所定义的区域、建筑物等。在示例中，多个嵌套的区域之间的边界可以由到无线网络设备105的物理距离来定义。
在示例中，多个嵌套区域中的每个可以被分配来自一组信号序列类中的信号序列类。在示例中，该组信号序列类包括两个信号序列类，这两个信号序列类中的一个是小区边缘类。在示例中，逻辑位置与信号序列类相关。例如，小区边缘逻辑位置可以与小区边缘类相关。
分配模块115可以被设置为基于UE 120的逻辑位置向UE 120分配来自信号序列类中的信号序列。在示例中，该信号序列类是该组信号序列类的成员中的一个。
在示例中，该组信号序列的成员中的信号序列可以是探测参考信号(SRS)序列。SRS序列可以被设置为在SRS传输中由UE 120所使用。SRS传输，例如在3GPP标准族中所使用的，可以促进由接收设备(例如，无线网络设备105)进行的信道质量估计(例如，信道脉冲响应估计)。在示例中，该组信号序列类的成员中的信号序列可以是一个或多个基序列的循环移位。该循环移位可以是基序列的所有可能数量的循环移位的子集。在示例中，基序列是Zadoff-Chu序列。在示例中，在UE的逻辑位置是小区边缘的情况下，信号序列类是小区边缘类。在示例中，在小区边缘类中的给定基序列的循环移位数大于非小区边缘类中的给定基序列的循环移位数。例如，如果区域140对应于UE 120的小区边缘逻辑位置，则可向区域140分配小区边缘类。然后可以向区域130和135分配相同或不同的非小区边缘类。因此，相比于所分配给给定相同的基序列的UE 125的信号序列，所分配给UE 120的信号序列将具有对基序列更大数量的循环移位。在示例中，小区边缘类中的基序列的循环移位数是非小区边缘类中的基序列的循环移位数的正整数倍。在示例中，该正整数倍数为二。例如，如果与区域130的小区类相关联的循环移位是八，则与区域135和140相关联的循环移位分别是16和32。在示例中，当该组信号序列类包括两类时，非小区边缘类可以具有为八的循环移位数，而小区边缘类可以具有为十六的循环移位数。
在示例中，分配模块115可以被设置为向UE 120分配来自信号序列类中的第一信号序列。分配模块115也可以被设置为向与UE 120处在相同逻辑位置的第二UE(未示出)分配来自相同信号类中的第二信号序列。在该示例中，第一信号序列和第二信号序列是相同信号序列类的不同成员。在示例中，选择第一和第二信号序列以改进或最大化两者之间的正交性。
在示例中，分配模块115可以被设置为向UE 120分配来自第一信号序列类中的第一信号序列。分配模块115也可以被设置为向第二UE 125分配第二信号。在该示例中，该第二信号序列可以被提取于第二信号序列类的成员，该第二信号序列类不同于该第一信号序列类。在该示例中，UE 125相比UE 120处于不同的逻辑位置。另外，第一信号序列类与UE 120的逻辑位置相关，而第二信号序列类与UE 125的逻辑位置相关。
图2示出了根据实施例的协作多点系统200的示例。系统200可以包括第一无线网络设备105和第二无线网络设备210。这些无线网络设备中的每个可以各自服务小区205和215。系统200也可以包括在小区边缘区域140中的UE 120。在示例中，第一无线网络设备105被设置为与第二无线网络设备210相协调以执行对UE 120的信号的联合接收。在示例中，第一无线网络设备105和第二无线网络设备210两者都被设置为对根据如3GPP标准族所规定的CoMP的UE信号进行联合接收。
如所示出的，可以在小区205和215之间共享小区边缘区域140以允许通过无线网络设备105和210对UE的信号进行CoMP接收。在示例中，小区边缘区域140仅当CoMP在小区边缘区域140中可用时存在且被定义。即，即使区域140满足前文所述的针对区域140的小区边缘分类的边界阈值，第二无线网络设备210的缺失(例如，CoMP运行的缺失)会阻止区域140成为小区边缘区域。
图3示出了根据实施例的用于为UE选择探测参考信号的方法的示例。下文所描述的操作在硬件上执行。在示例中，前文所述的部件，例如无线网络设备105，可以执行以下操作中的一个或多个。
在操作305处，可以确定UE的逻辑位置。该逻辑位置可以从由无线网络设备105所服务的小区内的多个逻辑位置中进行选择。在示例中，多个逻辑位置中的逻辑位置可以是图1中用区域130、135和140所示出的小区的嵌套区域。在示例中，嵌套区域的边界由在无线网络设备105处所测量的UE 120的SSRP的阈值所定义。在示例中，嵌套区域的边界可以由地理特征所定义。例如，地理特征可以包括城市、河流、具体纬度等的界线。在示例中，嵌套区域的边界可以由UE 120到无线网络设备105的物理距离来定义。在示例中，嵌套区域可以包括小区边缘区域140。
在操作310处，基于在操作305处所确定的逻辑位置可以向UE分配信号序列。在示例中，可以由无线网络设备105执行该分配。在示例中，信号序列可以是一组信号序列中的成员，该组信号序列被设置为提供由被UE120所使用时的无线网络设备105进行的信道质量估计。在示例中，该组信号序列的成员可以被设置为唯一地将UE 120从小区中的其它UE(例如，UE 125)中识别出来。
在示例中，信号序列可以是SRS。在示例中，可以从对小区边缘区域140唯一的SRS组中选择SRS。在示例中，对小区边缘区域140唯一的SRS组可以是对不同嵌套区域(例如区域130或135)唯一的各自SRS的循环移位。在示例中，对小区边缘区域140唯一的SRS组的循环移位可以是各自基序列的循环移数的子集。该循环移数可以是各自的基序列的第二循环移数的倍数。在示例中，各自的基序列的第二循环移数可以定义对不同嵌套区域唯一的SRS组。在示例中，单个不同嵌套区域可以存在于多个嵌套区域中。该单个不同嵌套区域可以是最里面的区域，例如区域130。
图4示出了示例性机器400的框图，在该机器上可以执行本文中所讨论的技术(例如，方法)中的任意一个或多个。在替代实施例中，机器400可以作为独立设备运行或可以被连接(例如，联网)到其它机器。在联网的部署中，机器400可以有能力作为服务器机器、客户端机器或服务器-客户端网络环境中运行。在示例中，机器400可以作为点对点(P2P)网络环境中的对等机。机器400可以是个人计算机(PC)、平板PC、机顶盒(STB)、个人数字助理(PDA)、移动电话、网络设备、网络路由器、交换机或桥接器、或能够(顺序或其它)执行规定将由该机器所采取的行动的指令的任何机器。另外，尽管只示出了单个机器，但术语“机器”也被认为包括机器的任何集合，该机器独自地或共同地执行一组(或多组)指令以执行本文中所讨论的方法中的任意一个或多个，例如云计算、软件即服务(SaaS)或其它计算机群集配置。
如本文中所述的，示例可以包括或可以在以下项上执行：逻辑或多个部件、模块或机制。模块是有形的实体(例如，硬件)，其能够执行指定的操作并可以以某种方式被配置或设置。在示例中，电路可以以指定的方式被设置(例如，内部地或相对于诸如其它电路这样的外部实体)为模块。在示例中，一个或多个计算机系统(例如，独立的、客户端或服务器计算机系统)的整体或一部分、或一个或多个硬件处理器，可以被固件或软件(例如，指令、应用部分或应用)配置为模块，其运行以执行指定的操作。在示例中，软件可以驻留于机器可读介质上。在示例中，当被模块的底层硬件执行时，软件使得硬件执行特定的操作。
由此，术语“模块”被理解为包括有形的实体，其是被物理地构造出来的实体，其被具体地配置(例如，硬连线的)或被临时地(例如，暂时地)配置(例如，被编程)为以指定的方式操作或执行本文所述的任何操作的部分或全部。考虑在其中模块被临时地配置的示例，每个模块不需要在任一时刻被实例化。例如，在模块包括利用软件配置的通用硬件处理器的情况下，该通用硬件处理器可以在不同时间被配置为各自不同的模块。由此，软件可以配置硬件处理器，例如，以在一个实例时间构成特定的模块而在不同实例时间构成不同的模块。
机器(例如，计算机系统)400可以包括硬件处理器402(例如，中央处理单元(CPU)、图形处理单元(GPU)、硬件处理器内核或其任意组合)、主存储器404和静态存储器406，其中的一些或全部可以经由互连(例如，总线)408进行相互通信。机器400可以进一步包括显示单元410、字母数字输入设备412(例如，键盘)、以及用户界面(UI)导航设备414(例如，鼠标)。在示例中，显示单元410、输入设备417和UI导航设备414可以是触摸屏显示器。机器400可以另外包括储存设备(例如，驱动单元)416、信号发生设备418(例如，扬声器)、网络接口设备420、以及一个或多个传感器421，例如全球定位系统(GPS)传感器、指南针、加速器或其它传感器。机器400可以包括输出控制器428，例如串行(例如，通用串行总线(USB))、并行或其它有线或无线的(例如，红外(IR))连接以通信或控制一个或多个外围设备(例如，打印机、读卡器等)。
储存设备416可以包括机器可读介质422，其上存储有一组或多组数据结构或指令424(例如，软件)，其实现本文所述的技术或功能中的任意一个或多个，或其被本文所述的技术或功能中的任意一个或多个所使用。在指令424由机器400执行期间，指令424也可以全部地或至少部分地驻留于主存储器404内、静态存储器406内、或硬件处理器402内。在示例中，硬件处理器402、主存储器404、静态存储器406或储存设备416中的一个或其任意组合可以构成机器可读介质。
尽管机器可读介质422被示出为单个介质，但术语“机器可读介质”可以包含单个介质或多个介质(例如，集中式或分布式数据库，和/或相关联的缓存和服务器)，其被设置为存储一个或多个指令424。
术语“机器可读介质”可以包括任何介质，其能够存储、编码或携带用于由机器400所执行的指令，并且其使得机器400执行本公开的技术中的任意一个或多个，或其能够存储、编码或携带由该指令所使用或与该指令相关联的数据结构。非限制性机器可读介质的示例可以包括固态储存器以及光学和磁介质。在示例中，大容量机器可读介质包括具有多个具有静止质量的粒子的机器可读介质。大容量机器可读介质的具体示例可以包括：非易失性存储器，例如半导体存储器设备(例如，电可编程只读存储器(EPROM)、电可擦可编程只读存储器(EEPROM))以及闪速存储器设备；磁盘，例如内部硬盘以及可移动磁盘；磁光盘；以及CD-ROM和DVD-ROM盘。
可以进一步通过通信网络426，利用传输介质，经由网络接口设备420，使用多个传输协议(例如，帧中继、互连网协议(IP)、传输控制协议(TCP)、用户数据报协议(UDP)、超文本传送协议(HTTP)等)中的任意一个来发送或接收指令424。示例性通信网络可以包括局域网(LAN)、广域网(WAN)、分组数据网络(例如，互联网)、移动电话网络(例如，蜂窝网络)、普通老式电话(POTS)网络、以及无线数据网络(例如，被称为的电子电气工程师协会(IEEE)802.11标准族、被称为的IEEE802.16标准族)、点对点(P2P)网络等等。在示例中，网络接口设备420可以包括一个或多个物理插口(例如，以太网、同轴或电话插口)或一个或多个天线以连接到通信网络426。在示例中，网络接口设备420可以包括多个天线以使用以下中的至少一个来无线地进行通信：单输入多输出(SIMO)、多输入多输出(MIMO)、或多输入单输出(MISO)技术。术语“传输介质”应被认为包括任何无形的介质，其能够存储、编码或携带用于由机器400所执行的指令，并包括数字或模拟通信信号或其它无形的介质以促使这种软件的通信。
附加注释和示例
示例1包括主题(例如设备、装置或无线网络设备)，其包括：边缘确定模块，该边缘确定模块被设置为确定用户设备(UE)在由无线网络设备所服务的小区内的并且相对于小区的边缘的逻辑位置；以及分配模块，该分配模块被设置为基于UE的逻辑位置向UE分配来自信号序列类的信号序列，该信号序列类是一组信号序列类的一个成员。
在示例2中，示例1的主题可选择性地包括：该组信号序列类的成员中的信号序列是一个或多个基序列经由一个基序列的循环移位数的子集的循环移位。
在示例3中，示例2的主题可选择性地包括：该一个或多个基序列是基于Zadoff-Chu的序列。
在示例4中，示例2和3中的任意一个或两个的主题可选择性地包括：逻辑位置是小区边缘，并且信号序列类是小区边缘类，其中小区边缘类中的基序列的循环移位数大于非小区边缘类中的基序列的循环移位数。
在示例5中，示例4的主题可选择性地包括：该组信号序列类包括两个信号序列类，并且小区边缘类中的基序列的循环移位数是非小区边缘类中的基序列的循环移位数的正整数倍。
在示例6中，示例5的主题可选择性地包括：正整数倍为二。
在示例7中，示例6的主题可选择性地包括：小区边缘类中的基序列的循环移位数为八。
在示例8中，示例2-7中的任意一个或多个的主题可选择性地包括：信号序列是探测参考信号(SRS)序列，其被设置为在SRS传输中由UE所使用，其中SRS传输促进由接收设备进行的信道质量估计。
在示例9中，示例1-8中的任意一个或多个的主题可选择性地包括：无线网络设备包括根据第三代合作伙伴计划(3GPP)标准族的eNodeB。
在示例10中，示例1-9中的任意一个或多个的主题可选择性地包括：边缘确定模块被设置为利用在无线网络设备处所测量的UE的信号强度接收功率(SSRP)来确定UE相对于由无线网络设备所服务的小区边缘的逻辑位置。
在示例11中，示例10的主题可选择性地包括：边缘确定模块被设置为当SSRP低于预先确定的阈值时，向UE分配小区边缘的逻辑位置。
在示例12中，示例1-11中的任意一个或多个的主题可选择性地包括：分配模块被配置为向UE分配来自信号序列类中的第一信号序列，并向第二UE分配来自信号序列类中的第二信号序列。该第一和第二信号序列互相正交，且该第二UE与该UE处在相同的逻辑位置。
在示例13中，示例1-12中的任意一个或多个的主题可选择性地包括：分配模块被配置为向UE分配来自信号序列类中的第一信号序列，并向第二UE分配来自所述一组信号序列类的一个不同成员的第二信号序列，其中该第二UE处在与所述UE不同的逻辑位置。
在示例14中，示例1-13中的任意一个或多个的主题可选择性地包括：无线网络设备被设置为与第二无线网络设备相协调以执行对针对UE的信号的联合接收。
在示例15中，示例14的主题可选择性地包括：无线网络设备和第二无线网络设备被设置为根据3GPP标准族的协作多点(CoMP)过程来执行对针对UE的信号的联合接收。
示例16可以包括，或可以选择性地与示例1-15中的任意一个或多个的主题相结合以包括主题(例如方法、用于执行动作的单元、或包括当被机器执行时使得机器执行动作的指令的机器可读介质)，其包括用于：为用户设备(UE)确定逻辑位置，该逻辑位置是从由无线网络设备所服务的小区内的多个逻辑位置中选择的，并且基于该逻辑位置向UE分配信号序列。
在示例17中，示例16的主题可选择性地包括：多个逻辑位置中的逻辑位置是小区中的嵌套区域。
在示例18中，示例17的主题可选择性地包括：嵌套区域的边界由所测量的UE的信号强度接收功率(SSRP)的阈值所定义。
在示例19中，权利要求17和18中的任意一个或两个的主题可选择性地包括：通过地理特征定义嵌套区域的边界。
在示例20中，权利要求17-19中的任意一个或多个的主题可选择性地包括：通过与无线网络设备的物理距离定义嵌套区域的边界。
在示例21中，权利要求16-20中的任意一个或多个的主题可选择性地包括：作为一组信号序列的成员的信号序列被设置为在由UE所使用时提供无线网络设备进行的信道质量估计。
在示例22中，示例21的主题可选择性地包括：所述一组信号序列的成员被设置为唯一地将UE与小区中的其它UE区分开来。
在示例23中，示例21和22中的任意一个或两个的主题可选择性地包括：多个逻辑位置中的逻辑位置是小区的嵌套区域，所述一组信号序列的一个成员是基序列的循环移位，该循环移位是基序列的循环移位数的子集；以及所述一组信号序列的成员被唯一地与嵌套区域中的区域相关联。成员的循环移位数是与嵌套区域中最里面的区域唯一地相关联的第二成员的循环移位数的倍数。
在示例24中，示例23的主题可选择性地包括：基于逻辑位置向UE分配信号序列，分配与嵌套区域中的一个区域唯一地相关联的多个信号序列中的一个，该区域对应于逻辑位置。
示例25可以包括，或可以选择性地与示例1-24中的任意一个或多个的主题相结合以包括主题(例如方法、用于执行动作的单元、或包括当被机器执行时使得机器执行动作的指令的机器可读介质)，其包括：由无线网络设备利用硬件元件基于用户设备(UE)与由所述无线网络设备所服务的并为UE进行服务的小区的小区边缘之间的关系，向UE分配探测参考信号(SRS)。
在示例26中，示例25的主题可选择性地包括：UE与小区边缘之间的关系是小区的一组嵌套区域中的一个，该组嵌套区域包括小区边缘区域。
在示例27中，示例26的主题可选择性地包括：从对小区边缘区域唯一的SRS组中选择SRS。
在示例28中，示例27的主题可选择性地包括：对小区边缘区域唯一的SRS组是对不同嵌套区域唯一的相应的SRS的循环移位。
在示例29中，示例28的主题可选择性地包括：针对对小区边缘区域唯一的SRS组的循环移位是相应的基序列的循环移位数的子集，该循环移位数是对不同嵌套区域唯一的相应的基序列的第二位循环移数的倍数。
在示例30中，示例29的主题可选择性地包括：不同嵌套区域是嵌套区域中最里面的区域。
上述详细说明包括对附图的参考，该附图构成了详细说明的一部分。附图以说明的方式示出了能够被实践的具体实施例。这些实施例在本文中也被称作“示例”。这样的示例可以包括除了那些已示出或已说明的元件之外的元件。然而，本发明人也考虑仅提供所示出或所描述的那些元件的示例。另外，本发明人也考虑使用那些所示出或所描述的元件(或其一个或多个方面)的任意组合或排列的示例，或关于一个特定示例(或其一个或多个方面)，或关于本文中所示或所描述的其它示例(或其一个或多个方面)。
在本文档中所参考的所有出版物、专利和专利文档在本文中通过引用的方式以整体并入本文，如同通过引用被单个地并入。在本文档和那些通过引用被并入的文档间的使用不一致的情况下，所并入的引用的使用应被理解为对本文档的补充；对于不可调和的不一致，由本文档的使用掌控。
在本文档中，使用术语“一(a)”或“一(an)”，如在专利文档中常见的，来包括一个或多于一个，其独立于“至少一个”或“一个或多个”的其它实例或使用。在本文档中，除非另作说明，否则术语“或”用于指代无排他性的“或”，从而“A或B”包括“是A而不是B”、“是B而不是A”以及“A和B”。在附属的权利要求中，术语“包括”和“在其中”被当作各自术语“包含”和“其中”的通俗英语同义词。另外，在下面的权利要求中，术语“包括”和“包含”是开放式的，即，包括除了在权利要求中该术语之后所列举的那些元件外的元件的系统、设备、物品或过程仍然被视为落入该权利要求的范围内。此外，在下面的权利要求中，术语“第一”、“第二”和“第三”等仅被用作标签，而并不是要对其客体施加数字的要求。
以上的描述是说明性的，而非限制性的。例如，上述的示例(或其一个或多个方面)可以互相结合使用。在审阅上述说明之后，例如本领域普通技术人员之一能够使用其它的实施例。摘要使读者快速地确定技术性公开的实质，并且在这样的理解下被提交：其不会被用于说明或限制权利要求的范围或意义。另外，在上述具体实施方式中，各个特征可以被聚集在一起以精简本公开。这不应被理解为这样的意图：未要求保护的已公开的特征对任意权利要求来说都是关键的。相反，发明主题可能在于少于特定公开的实施例的所有特征。因此，以下权利要求特此被并入到具体实施方式中，其中每个权利要求本身作为一个独立的实施例。应当参考附属权利要求以及这些权利要求所享有的同等物的全部范围，来确定实施例的范围。

Claims (30)

1.一种无线网络设备，包括：
边缘确定模块，其被设置为确定用户设备(UE)在由所述无线网络设备所服务的小区内的并且相对于所述小区的边缘的逻辑位置；以及
分配模块，其被设置为：
基于所述UE的所述逻辑位置，向所述UE分配来自信号序列类的第一信号序列，所述信号序列类是一组信号序列类的一个成员；并且
向第二UE分配来自所述一组信号序列类的一个不同成员的第二信号序列，其中，所述第二UE处在与所述UE不同的逻辑位置。
2.根据权利要求1所述的无线网络设备，其中，所述一组信号序列类的成员中的信号序列是一个或多个基序列经由一个基序列的循环移位数的子集的循环移位。
3.根据权利要求2所述的无线网络设备，其中，所述一个或多个基序列是基于Zadoff-Chu的序列。
4.根据权利要求2所述的无线网络设备，其中，所述逻辑位置是小区边缘；并且
其中，所述信号序列类是小区边缘类，所述小区边缘类中的基序列的循环移位数大于非小区边缘类中的基序列的循环移位数。
5.根据权利要求4所述的无线网络设备，其中，所述一组信号序列类包括两个信号序列类；并且
其中，所述小区边缘类中的基序列的循环移位数是非小区边缘类中的基序列的循环移位数的正整数倍。
6.根据权利要求5所述的无线网络设备，其中，所述正整数倍为二。
7.根据权利要求6所述的无线网络设备，其中，非小区边缘类中的基序列的循环移位数为八。
8.根据权利要求2所述的无线网络设备，其中，所述信号序列是探测参考信号(SRS)序列，其被设置为在SRS传输中由所述UE使用，所述SRS传输促进由接收设备进行的信道质量估计。
9.根据权利要求1所述的无线网络设备，其中，所述无线网络设备包括根据第三代合作伙伴计划(3GPP)标准族的eNodeB。
10.根据权利要求1所述的无线网络设备，其中，所述边缘确定模块被设置为利用在所述无线网络设备处所测量的所述UE的信号强度接收功率(SSRP)来确定所述UE相对于由所述无线网络设备所服务的所述小区的边缘的逻辑位置。
11.根据权利要求10所述的无线网络设备，其中，所述边缘确定模块被设置为当所述SSRP低于预先确定的阈值时，向所述UE分配小区边缘的逻辑位置。
12.根据权利要求1所述的无线网络设备，其中，所述分配模块被设置为向第三UE分配来自所述信号序列类的第三信号序列，其中，所述第一和第三信号序列互相正交，并且其中，所述第三UE与所述UE处在相同的逻辑位置。
13.根据权利要求1所述的无线网络设备，其中，所述分配模块被设置为：
向所述UE分配来自所述信号序列类的第一信号序列；并且
向第二UE分配来自所述一组信号序列类的一个不同成员的第二信号序列，其中，所述第二UE处在与所述UE不同的逻辑位置。
14.根据权利要求1所述的无线网络设备，其中，所述无线网络设备被设置为与第二无线网络设备相协调以执行对针对所述UE的信号的联合接收。
15.根据权利要求14所述的无线网络设备，其中，所述无线网络设备和所述第二无线网络设备被设置为根据3GPP标准族的协作多点(CoMP)过程来执行对针对第一UE的信号的联合接收。
16.一种计算机可读介质，其包括指令，当所述指令由机器执行时，使所述机器用于：
为用户设备(UE)确定逻辑位置，所述逻辑位置是从由无线网络设备所服务的小区内的多个逻辑位置中选择的；并且
基于所述逻辑位置向所述UE分配信号序列，所述信号序列是一组信号序列的一个成员，所述一组信号序列的成员被唯一地与嵌套区域中的一个区域相关联。
17.根据权利要求16所述的计算机可读介质，其中，所述多个逻辑位置中的逻辑位置是所述小区的嵌套区域。
18.根据权利要求16所述的计算机可读介质，其中，所述嵌套区域的边界由所测量的所述UE的信号强度接收功率(SSRP)的阈值所定义。
19.根据权利要求16所述的计算机可读介质，其中，所述嵌套区域的边界是通过地理特征来定义的。
20.根据权利要求16所述的计算机可读介质，其中，所述嵌套区域的边界是通过与所述无线网络设备的物理距离来定义的。
21.根据权利要求16所述的计算机可读介质，其中，所述一组信号序列的成员被设置为在由所述UE所使用时提供所述无线网络设备进行的信道质量估计。
22.根据权利要求21所述的计算机可读介质，其中，所述一组信号序列的成员被设置为唯一地将所述UE与所述小区中的其它UE区分开来。
23.根据权利要求21所述的计算机可读介质，其中，所述一组信号序列的成员是基序列的循环移位，循环移位是所述基序列的循环移位数的子集；并且
其中，所述一组信号序列的一个成员的循环移位数是与所述嵌套区域中最里面的区域唯一地相关联的第二成员的循环移位数的倍数。
24.根据权利要求23所述的计算机可读介质，其中，基于所述逻辑位置向所述UE分配所述信号序列包括：分配与所述嵌套区域中的一个区域唯一地相关联的多个信号序列中的一个，该区域对应于所述逻辑位置。
25.一种方法，包括：
由无线网络设备利用硬件元件基于用户设备(UE)与由所述无线网络设备所服务的并为所述UE进行服务的小区的小区边缘之间的关系，向所述UE分配探测参考信号(SRS)。
26.根据权利要求25所述的方法，其中，所述UE与所述小区边缘之间的关系是所述小区的一组嵌套区域中的一个，所述一组嵌套区域包括小区边缘区域。
27.根据权利要求26所述的方法，其中，所述SRS是从对所述小区边缘区域唯一的SRS组中选择的。
28.根据权利要求25所述的方法，其中，对所述小区边缘区域唯一的所述SRS组是对不同嵌套区域唯一的相应的SRS的循环移位。
29.根据权利要求28所述的方法，其中，针对对所述小区边缘区域唯一的所述SRS组的循环移位是相应的基序列的循环移位数的子集，所述循环移位数是对所述不同嵌套区域唯一的相应的基序列的第二循环移位数的倍数。
30.根据权利要求29所述的方法，其中，所述不同嵌套区域是所述嵌套区域中最里面的区域。
CN201380009647.4A 2012-01-27 2013-01-25 探测参考信号增强以支持上行链路协作多点的设备和方法 Active CN104145524B (zh)

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