CN104885390A - 在设备到设备通信或网络通信中生成发现信号的系统和方法 - Google Patents

在设备到设备通信或网络通信中生成发现信号的系统和方法 Download PDF

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CN104885390A
CN104885390A CN201380064480.1A CN201380064480A CN104885390A CN 104885390 A CN104885390 A CN 104885390A CN 201380064480 A CN201380064480 A CN 201380064480A CN 104885390 A CN104885390 A CN 104885390A
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CN104885390B (zh
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韩承希
符仲凯
许允亨
阿波斯托洛斯·帕帕萨娜西欧
何宏
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Apple Inc
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Intel IP Corp
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Abstract

本文所介绍的技术提供了通过增加系统的复用容量来进行移动网络中的更多数量的移动设备的设备发现。该技术可以被应用于使用低功耗节点(例如，3GPP LTE或高级LTE网络中的微微eNodeB和毫微微eNodeB)的小小区和设备到设备通信网络。另外，该技术提供了发现信号的移动设备ID和正交资源之间的映射。

Description

在设备到设备通信或网络通信中生成发现信号的系统和方法
相关申请
本申请要求于2013年1月17日递交的、序列号为No.61/753,914的美国临时专利申请的优先权，其整体通过引用被结合于此。
技术领域
本申请涉及设备发现，并且更具体地涉及用于设备到设备通信或小型网络通信的设备发现。
背景技术
基于接近程度的应用和服务代表了社会和技术的快速发展的趋势，该趋势对蜂窝无线/移动带宽技术的演进有着重要的影响。这些服务可以包括意识到至少两个设备或两个用户彼此接近从而能够与彼此直接通信。基于接近程度的应用可以包括社交网络、移动商务、广告、游戏等。设备到设备(D2D)的通信可以被无缝地集成到当前以及下一代移动宽带网络(比如，3GPP长期演进(LTE)和LTE)中。然而，现有的移动宽带网络并未针对D2D的具体需求进行优化；例如，它们不支持两个设备之间的直接链接的建立。
另外，使用低功耗节点的小小区被考虑有希望处理移动流量暴增的情况，特别是用于室内和室外场景的热点部署。低功耗节点指的是相比典型的宏节点(例如，宏eNode-B(eNB))具有更低的传输功率的节点。微微eNB和毫微微eNB是低功耗节点的代表。
附图说明
图1分别针对正常的循环前缀(CP)情况和扩展的循环前缀情况示出了时隙中的PUCCH格式1、1a、和1b的示例结构。
图2示出了具有时隙长度OCC的示例PUCCH结构。
图3示出了具有两个部分的、时隙长度OCC的示例PUCCH结构。
图4示出了具有三个部分的、时隙长度OCC的示例PUCCH结构。
图5示出了针对附加UE复用使用TDM的示例PUCCH结构。
图6示出了针对附加UE复用使用FDM的示例PUCCH结构。
图7示出了表示数据部分的相位调制的示例PUCCH结构。
图8是示出了用户设备(UE)的架构的示例的高级框图。
具体实施方式
本说明书中引用的“实施例”、“一个实施例”诸如此类的意思是所描述的具体特征、结构、或特性被包括在本发明的至少一个实施例中。在本说明书中出现的这种短语不一定指的都是相同的实施例。
可以同时在网络中进行通信的移动设备(例如，LTE用户设备(UE)等等)的数量通常是可用于通信的物理资源块(PRB)的数量和在那些PRB上复用UE通信的容量的函数。
如上所述，预期会有大量的用户在较小地理区域内参与到D2D通信或经由小小区连接到更大的网络。因此，为了帮助大量的用户，定义具有较大的复用容量的通信协议是有益处的。另外，D2D和小小区用户可以以共存的模式进行操作并且与其他的蜂窝用户重新使用频谱，这意味着更大的复用容量会帮助更多的用户共享频谱。
可以从增加的复用容量中获益的D2D通信和接入小小区的一个具体方面是设备发现。本文介绍的技术描述了针对在两种使用场景中的发现信号提高复用容量的系统和方法。
应该注意的是尽管本文介绍的技术基于物理上行链路控制信道(PUCCH)的3GPP LTE格式1、1a、和1b被描述，但是该技术可以被应用于其他适当的物理信道的变体。例如，如果发现信号结构是至少基于UE复用的频分复用(FDM)和/或码分复用(CDM)的，则可以应用本文介绍的技术。
图1分别针对正常的循环前缀(CP)情况和扩展的循环前缀情况示出了时隙中的PUCCH格式1、1a、和1b的示例结构。在正常的CP情况中，存在分别用于参考信号(RS)传输的3个单载波频分多址(SC-FDMA)符号和用于数据传输的4个SC-FDMA符号。在扩展的CP情况中，存在用于RS的2个SC-FDMA符号和用于数据的4个SC-FDMA符号。为了辅助UE的复用，在正常的CP情况中，在SC-FDMA符号级别上长度为3的正交码覆盖(orthogonal code cover，OCC)可以被应用于RS部分，长度为4的OCC可以被应用于数据部分。在扩展的CP情况中，在SC-FDMA符号级别上长度为2的OCC可以被应用于RS部分。尽管在本文的各种示例中符号被描述为SC-FDMA，但是任意多址符号都可以被使用，例如，正交频分多址(OFDMA)符号等等。
在时隙中的总体复用容量由具有较小的复用容量的部分所限制。例如，在正常的CP情况中，总体复用容量为3。这是因为更小的复用容量属于RS部分，其是3(由于OCC的长度为3)，而数据部分的复用容量为4(由于OCC的长度为4)。
附加的循环移位(CS)的正交序列可以被用于提供更高的复用容量。循环移位可以是物理上的时域循环移位，并且同等的实施方案是在频域中应用相位旋转序列。相反的，如果循环移位是物理上的频域循环移位，则同等的实施方案可以是在时域中的相位旋转。总之，时域和频域之间存在对偶性。如本文所使用的，循环移位可以是时域或频域的CS。
循环移位的最大数量可以是物理信道的最大延迟扩展和符号长度的函数。例如，假设最大延迟扩展是5μs，符号长度是66.67μs，理论上在符号内13循环移位是可用的(即，66.67μs/5μs)。然而，在实践中通常采用12循环移位以提供更大的可靠性。
如上所述，网络或其他通信系统(例如，D2D)的复用容量是PRB和复用容量的函数。CS、OCC、和PRB的结合可以被呈现为正交资源(即，可以被唯一识别的资源)。正交资源可以被用于UE复用。通信系统的最大复用容量可以被定义为CS、OCC、和PRB的最大复用容量的乘积，如下所示。
Nmax，total＝Nmax，CS·Nmax，OCC·Nmax，PRB
其中：
Nmax，CS：使用CS的最大复用容量
Nmax，OCC：使用OCC的最大复用容量
Nmax，PRB：使用PRB的最大复用容量
作为示例，假设CS复用容量为12，OCC复用通量为3(如上针对正常CP情况所说明的)，通信系统具有20MHz的系统带宽(即，由于时隙级的频率跳频，100个PRB中总计有50个PRB是可用的)，最大复用容量的总数是1800(即，Nmax，total＝12·3·50)。为了提高通信系统的最大复用容量，可以提高上文描述的最大复用容量中的任意一个。
在一个实施例中，可以修改OCC来提高系统的总体复用容量。例如，长度为N的OCC可以在时隙内被应用于全部SC-FCDM符号上。在正常的CP SC-FCDM符号和扩展的CP SC-FCDM符号的示例中，OCC的长度分别是7和6。图2示出了具有时隙长度OCC的示例PUCCH结构。在一个实施例中，长度为N的OCC可以是如图2的示例中所示的离散傅里叶变换(DFT)码。然而，应该注意的是可以使用其他正交码，例如，Walsh码或Hadamard序列等等。
如上所述，通信系统的最大OCC复用容量受限于最小部分的OCC长度。在该实施例中，因为各部分之间没有区别，所以通信系统的最大复用容量针对正常的CP或扩展的CP被分别提高至7或6。因此，假设如上文所述的相同的特性，通信系统的总体复用容量针对正常的CP或扩展的CP分别为4200(即，Nmax，total＝12·7·50)和3600(即，Nmax，total＝12·6·50)。
在图2的示例中，SC-FDMA符号中的RS部分和数据部分之间没有区别。因此，在没有基于RS部分的信道估计的情况下非相干信号检测可以被用于检测使用该格式的发现信号。在一些实施例中，在时隙等级上的频率跳频还可以被用于提供频率分集增益。
在一些实施例中，缩短的PUCCH格式可以通过截断(puncture)子帧内最后的SC-FDMA符号以容纳探测参考符号(SRS)传输来进行定义。与图2的示例相比时，SRS的添加会导致总体的复用容量有少量的下降，但是比起图1的示例仍旧获得了提高。
在其他实施例中，跨时隙的频率跳频可被禁用，并且子帧长度(针对正常的CP和扩展的CP分别是14和12)的OCC可以被用来进一步地提高复用容量。图3示出了具有子帧长度OCC的示例PUCCH结构。在该实施例中，OCC可以是DFT码、Walsh码、Hadamard序列等等。
在一些实施例中，时隙或子帧可以由OCC分为一个或多个单元以进行扩展。每个单元可以包括一个或多个SC-FDMA符号，并且可以在各种部署中被安排。例如，为了进一步辅助设备发现中的复用，每个单元例如还可以被分配到不同的UE群组。例如，在正常的CP情况中，符号可以被分成具有长度为3和4的两个单元，或者具有长度为3、2、和2的三个单元等。图3和图4示出了具有各种单元长度的示例PUCCH结构。在一个实施例中，每个单元可以包括连续SC-FDMA符号用以确保甚至在高速追逐中的正交性。这些实施例的总体复用容量可以与上文参考图2描述的那些相同，因为整个时隙或子帧可以被用于OCC复用。
在一些实施例中，CS、OCC、或二者可以被关闭或者可以被设置为固定值。例如，如果信道过于频率选择性而不能容纳循环移位，则循环移位可以被关闭或者对循环移位使用固定值(例如，0)。如果UE正在经历高速移动，则OCC可以被停止，或者对正交码使用固定值(例如，[1，…，1]。
在一个实施例中，通过移除OCC，每个SC-FDMA符号可以对应于具体的UE(即，操作的时分复用(TDM)模式)。图5示出了针对附加UE复用使用TDM的示例PUCCH结构。正常的CP情况的总体复用容量是4200(即，Nmax，total＝12·7·50)。
在另一个实施例中，每个SC-FDMA符号的循环移位可以被频分复用(FDM)传输所取代。图6示出了针对附加UE复用使用FDM的示例PUCCH结构。在该实施例中，SC-FDMA符号的每个子载波可以与UE相关联。在图6的示例PUCCH结构中，PRB内的子载波数量为12，并且复用容量为4200，这与循环移位情况中的相同(即，Nmax，toall＝12·7·50，其中代替使用循环移位的12的复用容量，该为12的复用容量来自PRB内的子载波)。在一些实施例中，FDM没有被应用，仅有CDM(例如，时域OCC)被应用。
在一些实施例中，可在不需要修改现有物理信道格式的情况下提高通信系统的总体复用容量。例如，PUCCH时隙的数据部分可以被各种方案调制以提高数据运载容量。图7示出了表示对数据部分的相位调制的示例PUCCH结构。在一些实施例中，调制阶数和方案可以是提供鲁棒性能的QPSK。该调制信息可以提供附加信息或复用容量的提高。复用容量可以被提高一个系数，该系数是由更高阶调制提供的附加比特信息的数量。例如，假设20MHz系统带宽(即，100PRB)，在数据部分上运用BPSK、QPSK、8PSK、16QAM调制，总体复用容量分别变为3600(2倍复用容量)、7200(4倍复用容量)、14400(8倍复用容量)、以及28800(16倍复用容量)。
在运用BPSK、QPSK、8PSK、16QAM调制的调制符号值被用于传达附加信息，而不是用于提高复用容量时，可以分别传达1、2、3、和4比特的信息，此时针对所有调制方案的复用容量保持为1800。在一个实施例中，发现信号的通用格式被用于D2D和网络部署，而由调制符号传达的信息表示一者或另一者。在另一个实施例中，如果发现信号被用于D2D部署，调制信号可以表示特定请求或设备状态(例如，调度请求、应急状态、正常操作状态等等)。
在一些实施例中，由于D2D和小小区网络中的通信极为接近，所以物理信道的最大延迟扩展与宏小区情景的相比相对较小。由于较小的延迟扩展，能够在符号内采用更大数量的循环移位。例如，如果循环移位的数量(从12)被提高到24，通信系统的总体复用容量可以变为两倍。
在一个实施例中，可以根据如下公式确定循环移位：
α p ~ ( n s , l ) = 2 π · n c s ( p ~ ) ( n s , l ) / M
其中：
M是循环移位的数量；以及针对正常的CP和扩展的CP分别是：
n c s ( p ~ ) ( n s , l ) = [ n c s c e 11 ( n s , l ) + ( n ′ p ~ ( n s ) · Δ s h i f t P U C C H + ( n o c ( p ~ ) ( n s ) mod Δ s h i f t P U C C H ) ) mod N ′ ] mod M [ n c s c e l l ( n s , l ) + ( n ′ p ~ ( n s ) · Δ s h i f t P U C C H + n o c ( p ~ ) / 2 ) mod N ′ ] mod M
在另一个实施例中，可以通过移除频率跳频的功能并且在每个时隙中应用独立正交资源提高通信系统的总体复用容量。例如，假设20MHz系统带宽(即，100PRB)，当使用所有的正交资源时，系统的复用容量可以变为两倍(即，Nmax，total＝12·7·100)。
在D2D或小小区的一些实施方案中，发现信号中的正交资源可以被用于传达有用的标识信息。例如，正交资源可以携带UE-ID(例如，无线网络临时标识符(RNTI))、小区ID、D2D-ID、其他设备的相关ID等。在小小区发现情景中，例如可以使用发现信号的正交资源传达物理小区ID(PCID)、全球小区ID(GCID)、集群ID等等。在一个实施例中，正交资源的值可以是基于PCID或GCID的。
例如，在D2D发现情景中，正交资源可以被用于传达设备相关的ID(比如，UE-ID)。例如，在一些实施例中，网络可以将特定正交资源分配给UE，并且维护将正交资源关联到特定UE的数据库。在其他实施例中，在预定关系中正交资源与UE-ID(例如，RNTI)有关。例如：
P N T I = N S R · I S R + n P U C C H ( 1 ) 或者 R N T I = N I S R · n P U C C H ( 1 ) + I S R
其中：
NSR是子帧内PUCCH资源的数量；
ISR是调度请求(SR)配置指数；
是正交资源指数；以及
是SR配置的总数。
在各种实施例中，UE的集群可以针对D2D和小小区实施方案被定义。例如，第一集群可以包括在接近区域内的一个或多个UE，第二集群可以包括不接近的一个或多个UE。在一个实施例中，UE位置信息可以被用于确定集群的设备接近程度。如上所述，发现信号结构可以包括基础序列(base sequence)和正交序列。例如，每个正交序列可以包括CS、OCC等等。正交序列对接收器处的时间/或频率同步的差异敏感。另一方面，基础序列是准正交的，并且对时间/或频率同步的差异没那么敏感。考虑到这点，具有相同基础序列的各种正交序列可以被用于在集群中区分ID，并且各种基础序列可以被用于区分不同的集群以提高设备发现性能。
图8是示出了用户设备(UE)的架构的示例的高级框图。在示出的实施例中，UE架构包括处理系统，该处理系统包括处理器子系统802，该处理器子系统包括一个或多个处理器。UE架构还包括存储器804、存储模块806、和天线系统808，其中每个组件由互连810互相连接，并且由电源812供电。
UE架构可以被实施为单处理器系统或多处理器系统，该单处理器系统或多处理器系统优选地实现高级模块以发送数据到eNB或另一个UE以及从eNB或另一个UE接收数据。数据可以经由天线系统808被传送，该天线系统可以包括能够以一个或多个频率接收和发送数据的多天线系统或单天线系统。数据814可以被存储在存储模块806，使得数据可以被处理子系统802和存储器804取回。
存储器804说明性地包括可以被处理器子系统802寻址的存储位置，以及用于存储软件程序代码和数据结构的UE架构的其他组件。处理器子系统802和关联的组件可以继而包括被配置以执行软件代码和操纵数据结构的处理元件和/或逻辑电路。操作系统816功能性地组织UE的架构，该操作系统的各部分通常驻存于存储器804并且由处理器子系统802执行。包括各种计算机可读存储介质的其他处理和存储实现方式可以被用于存储并执行合适于本文所介绍的技术的程序指令，这对于本领域技术人员是显而易见的。
上文介绍的技术可以通过由软件和/或固件编程或配置的可编程电路实行，或者可以通过专用硬件电路或结合这种形式整体实行。这种专用电路(若有的话)可以例如是如下的形式：一个或多个专用集成电路(ASIC)、可编程逻辑设备(PLD)、现场可编程门阵列(FPGA)等。
用于实行本文所介绍的技术的软件和固件可以被存储在机器可读存储介质上，并且可以由一个或多个通用或专用可编程微处理器执行。如在本文中所使用的术语“机器可读介质”，包括可以以由机器(机器可以是例如，计算机、网络设备、蜂窝电话、PDA、制造工具、任意具有一个或多个处理器的设备等)可存取的形式存储信息的任意机制。例如，机器可存取的介质包括可记录/不可记录的介质(例如，只读存储器(ROM)；随机存取存储器(RAM)；磁盘存储介质；光存储介质；闪速存储设备)等。
如在本文中所使用的术语“逻辑”可以包括例如，专用硬件电路、结合软件和/或固件、或以上的结合。
下面是示例实施例：
在一个实施例中，用于设备到设备通信或网络通信的UE包括处理单元和耦合到处理单元的存储器，该存储器存储指令。当指令被处理器执行时，该指令使得处理器生成用于在物理信道上传输的多个多址符号(multiple access symbol)。为了生成多个多址符号，该指令使得处理器：将调制信号与第一序列相乘以生成第二序列、对第二序列应用一系列的循环移位以生成多个移位序列、对多个移位序列应用总长度为N的至少一个正交码覆盖(OCC)，以及将正交移位序列映射到物理信道的多个物理资源块(PRB)的子载波上。为了辅助设备到设备通信或网络通信的复用功能，处理单元增加如下中的至少一项：循环移位的数量、至少一个OCC的总长度、或可用PRB的数量。该指令还使得处理器在物理信道上传输多个多址符号。
在一个示例实施例中，循环移位的数量大于12。在一个示例实施例中，至少一个OCC的总长度N为7。在另一个示例实施例中，至少一个OCC的总长度N为6。在各种实施例中，OCC包括DFT码、Walsh码、或Hadarmard码中的一个或多个。
在一个实施例中，为了增加可用的PRB的数量，该指令使得处理器在物理信道中禁用跨时隙的频率跳频。如果频率跳频被禁用，在一个实施例中，至少一个OCC的总长度N为14。在另一个示例实施例中，至少一个OCC的总长度N为12。
在各种实施例中，固定值可以被用于循环移位或OCC中的一个或多个。
在一个实施例中，为了辅助设备到设备通信或网络通信的复用功能，该指令还使得处理单元使用相位调制方案对多个多址符号的数据部分进行调制。
在一个实施例中，网络包括3GPP长期演进(LTE)网络并且物理信道包括物理上行链路控制信道(PUCCH)。
在一个实施例中，多址符号包括单载波频分多址(SC-FDMA)符号。在另一个实施例中，多址符号包括正交频分多址(OFDMA)符号。
在另一个示例实施例中，3GPP长期演进(LTE)用户设备(UE)包括处理单元和耦合到处理单元的存储器，该存储器存储指令。处理器使得处理器生成多个多址符号。在一个实施例中，为了生成多个多址符号，该指令使得处理单元将调制符号与小区特定的基础序列相乘以生成新的序列，对新的序列应用一系列循环移位以生成多个移位序列，以及对移位序列应用总长度为N的至少一个正交码覆盖(OCC)，其中N等于移位序列的数量，并且至少一个OCC中的每一个被应用于连续的移位序列。该指令还可以使得处理单元在LTE网络的物理上行链路控制信道(PUCCH)上传输多个多址符号。
在各种实施例中，OCC包括DFT码、Walsh码、或Hadarmard码中的一个或多个。
在一个实施例中，该指令还使得处理单元截断至少一个多址符号以容纳探测参考符号(SRS)。
在另一个实施例中，该指令还使得处理单元对多个多址符号应用频率跳频。
在一个实施例中，循环移位的数量大于12。
在一个实施例中，多址符号包括单载波频分多址(SC-FDMA)符号。在另一个实施例中，多址符号包括正交频分多址(OFDMA)符号。
在另外的示例实施例中，非暂态计算机可读存储介质上存储有指令，当该指令由处理器执行时，使得处理器在设备到设备通信或网络通信中执行用于设备发现的方法。在示例实施例中，该方法包括生成多个多址符号，其中多个多址符号包括数据部分和参考信号部分；对多个多址符号的数据部分应用长度为N的正交码覆盖(OCC)并且对多个多址符号的参考信号部分应用长度为M的OCC，其中N等于数据部分中多址符号的数量，M等于参考信号部分中多址符号的数量；运用相位调制方案调制多个多址符号的数据部分；以及传输多个多址符号。
在各种实施例中，相位调制包括二进制相移键控(BPSK)调制、正交相移键控(QPSK)调制、8-PSK调制、正交振幅调制(QAM)等等中的一个或多个。
在一些实施例中，用于相位调制的调制符号包括信息比特。在一个实施例中，信息比特可以用来区分设备到设备通信和网络通信的发现信号。在另一个实施例中，信息比特可以表示设备到设备通信中的调度请求。在另一个实施例中，信息比特表示设备到设备通信中的应急状态。
在一个实施例中，多址符号包括单载波频分多址(SC-FDMA)符号。在另一个实施例中，多址符号包括正交频分多址(OFDMA)符号。
在另外的示例实施例中，在设备到设备通信或网络通信中用于设备发现的方法包括由用户设备(UE)生成用于在物理信道上传输的多个多址符号，在多个多址符号中嵌入标识信息用于设备发现，以及在物理信道上传输多个多址符号。
在各种实施例中，标识信息包括如下的一种：UE标识符、物理小区标识符、全球小区标识符、或设备到设备标识符。
在一个实施例中，生成多个多址符号包括将调制符号与基础序列相乘以生成新的序列，其中调制符号包括标识信息；对新的序列应用一个或多个正交序列以生成多个新的正交序列；以及将多个新的正交序列映射到多个物理资源块(PRB)的子载波上。
在另一个实施例中，生成多个多址符号包括将调制符号与基础序列相乘以生成新的序列；对新的序列应用一个或多个正交序列以生成多个新的正交序列，其中一个或多个正交序列包括标识信息；以及将多个新的正交序列映射到多个物理资源块(PRB)的子载波。
在另外的实施例中，标识信息包括集群标识符和UE标识符。在一个实施例中，生成多个多址符号包括将调制符号与基础序列相乘以生成新的序列，其中调制符号包括集群标识符；对新的序列应用一个或多个正交序列以生成多个新的正交序列，其中一个或多个正交序列包括UE标识符；以及将多个新的正交序列映射到多个物理资源块(PRB)的子载波。
在一个实施例中，网络包括3GPP长期演进(LTE)网络。
在一个实施例中，多址符号包括单载波频分多址(SC-FDMA)符号。在另一个实施例中，多址符号包括正交频分多址(OFDMA)符号。
尽管本公开包括参考特定的示例实施例，但应该认识到的是权利要求并不限于所述的实施例，而是能够通过所附的权利要求的精神和范围内的修改和改变被实践。因此，说明书和附图被认为是示意性的而不是限定性的。

Claims (25)

1.一种用于在设备到设备通信或网络通信中使用的用户设备(UE)，包括：
处理单元；以及
存储器，所述存储器被耦合到所述处理单元，所述存储器存储指令，当所述指令被处理器执行时，使得所述处理器进行如下操作：
生成用于在物理信道上传输的多个多址符号，其中为了生成所述多个多址符号，所述指令使得所述处理器：
将调制符号与第一序列相乘以生成第二序列；
对所述第二序列应用一系列循环移位以生成多个移位序列；
对所述多个移位序列应用总长度为N的至少一个正交码覆盖(OCC)；
将正交移位序列映射到所述物理信道的多个物理资源块(PRB)的子载波上；并且
其中为了促进所述设备到设备通信或网络通信的复用功能，所述处理单元增加如下各项中的至少一项：循环移位的数量、所述至少一个OCC的总长度、或可用的PRB的数量；以及
在所述物理信道上传输所述多个多址符号。
2.如权利要求1所述的UE，其中所述循环移位的数量大于12。
3.如权利要求1所述的UE，其中所述至少一个OCC的总长度N为7。
4.如权利要求1所述的UE，其中为了增加所述PRB的数量，所述指令使得处理器禁用所述物理信道中跨时隙的频率跳频。
5.如权利要求1所述的UE，其中为了促进所述设备到设备通信或网络通信的复用功能，所述指令还使得所述处理单元：
用相位调制方案调制所述多个多址符号的数据部分。
6.如权利要求1所述的UE，其中所述网络包括3GPP长期演进(LTE)网络。
7.如权利要求6所述的UE，其中所述物理信道包括物理上行链路控制信道(PUCCH)。
8.如权利要求1所述的UE，其中所述多址符号包括单载波频分多址(SC-FDMA)符号。
9.如权利要求1所述的UE，其中所述多址符号包括正交频分多址(OFDMA)符号。
10.一种3GPP长期演进(LTE)用户设备(UE)，包括：
处理单元；以及
存储器，所述存储器被耦合到所述处理单元，所述存储器存储指令，当所述指令被所述处理单元执行时，使得所述处理单元进行如下操作：
生成多个多址符号，其中为了生成所述多个多址符号，所述指令使得所述处理单元：
将调制符号与小区特定基础序列相乘以生成新的序列；
对所述新的序列应用一系列循环移位以生成多个移位序列；以及
对所述移位序列应用总长度为N的至少一个正交码覆盖(OCC)，其中N等于移位序列的数量，并且所述至少一个OCC中的每一个被应用于连续的移位序列；以及
在LTE网络的物理上行链路控制信道(PUCCH)上传输所述多个多址符号。
11.如权利要求10所述的UE，其中所述指令还使得所述处理单元截断至少一个多址符号以容纳探测参考符号(SRS)。
12.如权利要求10所述的UE，其中所述指令还使得所述处理单元对所述多个多址符号应用频率跳频。
13.如权利要求10所述的UE，其中所述循环移位的数量大于12。
14.如权利要求10所述的UE，其中所述多址符号包括单载波频分多址(SC-FDMA)符号。
15.如权利要求10所述的UE，其中所述多址符号包括正交频分多址(OFDMA)符号。
16.一种在其上具有指令的非暂态计算机可读存储介质，当所述指令由处理器执行时，使得所述处理器执行用于设备到设备通信或网络通信中的设备发现的方法，所述方法包括：
生成多个多址符号，其中所述多个多址符号包括数据部分和参考信号部分；
对所述多个多址符号的数据部分应用长度为N的正交码覆盖(OCC)并且对所述多个多址符号的参考信号部分应用长度为M的OCC，其中N等于所述数据部分中多址符号的数量，M等于所述参考信号部分中多址符号的数量；
用相位调制方案调制所述多个多址符号的所述数据部分；以及
传输所述多个多址符号。
17.如权利要求16所述的非暂态计算机可读存储介质，其中用于所述相位调制的调制符号包括信息比特。
18.如权利要求17所述的非暂态计算机可读存储介质，其中所述信息比特被用来区分用于设备到设备通信的发现信号和用于网络通信的发现信号。
19.如权利要求17所述的非暂态计算机可读存储介质，其中所述信息比特表示设备到设备通信中的调度请求。
20.如权利要求17所述的非暂态计算机可读存储介质，其中所述信息比特表示设备到设备通信中的应急状态。
21.一种用于设备到设备通信或网络通信中的设备发现的方法，所述方法包括：
由用户设备(UE)生成用于在物理信道上传输的多个多址符号；
在所述多个多址符号中嵌入以供用于设备发现的标识信息；以及
在所述物理信道上传输所述多个多址符号。
22.如权利要求21所述的方法，其中所述标识信息包括如下的一种：UE标识符、物理小区标识符、全球小区标识符、或设备到设备标识符。
23.如权利要求21所述的方法，其中生成多个多址符号包括：
将调制符号与基础序列相乘以生成新的序列，其中所述调制符号包括所述标识信息；
对所述新的序列应用一个或多个正交序列以生成多个新的正交序列；以及
将所述多个新的正交序列映射到多个物理资源块(PRB)的子载波上。
24.如权利要求21所述的方法，其中所述标识信息包括集群标识符和UE标识符。
25.如权利要求21所述的方法，其中所述网络包括3GPP长期演进(LTE)网络。
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