公开(公告)号：US08223908B2

公开(公告)日：2012-07-17

申请号：US12113409

申请日：2008-05-01

申请人： Peter Gaal ,  Byoung-Hoon Kim ,  Ke Liu ,  Tao Luo

发明人： Peter Gaal ,  Byoung-Hoon Kim ,  Ke Liu ,  Tao Luo

IPC分类号： H04L7/00

CPC分类号： H04L27/261 ,  H04L25/0226

摘要： Systems and methods are provided to generate a set of synchronization channel sequences that optimize time and frequency acquisition. A set of root indices of Zadoff-Chu sequences in a first domain (e.g., time domain) that optimize a performance metric or merit factor are identified. An optimal index is determined that also optimizes a performance metric in a reciprocal domain (e.g., frequency domain). Optimal indices satisfy a centro-symmetric relationship with respect to a half-value of sequence length: When 1 is an optimal index, N−1 is also an optimal root index. For sequences of length Q2=N, a base sequence generated with an optimal sequence can be utilized to generate at least two disparate optimal sequences through sign-flip, conjugation, and periodic modulation operations.

摘要翻译： 提供系统和方法以产生优化时间和频率采集的一组同步信道序列。 识别优化性能度量或优点因子的第一域（例如，时域）中的Zadoff-Chu序列的一组根索引。 确定最优索引，该最优索引还优化互倒域（例如，频域）中的性能度量。 最优索引相对于序列长度的半值满足中心对称关系：当1是最优索引时，N-1也是最优根索引。 对于长度为Q2 = N的序列，可利用以最佳序列生成的碱基序列通过符号翻转，共轭和周期调制操作来生成至少两个不同的最佳序列。

公开(公告)号：US20080273582A1

公开(公告)日：2008-11-06

申请号：US12113409

申请日：2008-05-01

申请人： Peter Gaal ,  Byoung-Hoon Kim ,  Ke Liu ,  Tao Luo

发明人： Peter Gaal ,  Byoung-Hoon Kim ,  Ke Liu ,  Tao Luo

IPC分类号： H04B17/00

CPC分类号： H04L27/261 ,  H04L25/0226

摘要： Systems and methods are provided to generate a set of synchronization channel sequences that optimize time and frequency acquisition. A set of root indices of Zadoff-Chu sequences in a first domain (e.g., time domain) that optimize a performance metric or merit factor are identified. An optimal index is determined that also optimizes a performance metric in a reciprocal domain (e.g., frequency domain). Optimal indices satisfy a centro-symmetric relationship with respect to a half-value of sequence length: When 1 is an optimal index, N−1 is also an optimal root index. For sequences of length Q2=N, a base sequence generated with an optimal sequence can be utilized to generate at least two disparate optimal sequences through sign-flip, conjugation, and periodic modulation operations.

摘要翻译： 提供系统和方法以产生优化时间和频率采集的一组同步信道序列。 识别优化性能度量或优点因子的第一域（例如，时域）中的Zadoff-Chu序列的一组根索引。 确定最优索引，该最优索引还优化互倒域（例如，频域）中的性能度量。 最优索引相对于序列长度的半值满足中心对称关系：当1是最优索引时，N-1也是最优根指数。 对于长度为Q 2的序列，可利用最佳序列生成的碱基序列通过符号翻转，共轭和周期调制操作来产生至少两个不同的最佳序列。

公开(公告)号：US08009701B2

公开(公告)日：2011-08-30

申请号：US12166495

申请日：2008-07-02

申请人： Tao Luo ,  Peter Gaal ,  Ke Liu ,  Arun Kannu

发明人： Tao Luo ,  Peter Gaal ,  Ke Liu ,  Arun Kannu

IPC分类号： H04J3/06

CPC分类号： H04W56/001 ,  H04J11/0069 ,  H04J11/0073 ,  H04J11/0076 ,  H04J13/0003 ,  H04J13/10 ,  H04J2011/0096 ,  H04J2013/0096 ,  H04L5/0053 ,  H04L27/2613 ,  H04L27/2626

摘要： Providing for secondary synchronization encoding utilizing a primary synchronization channel (P-SCH)-related scrambling code is described herein. Scrambled secondary synchronization codes (SSCs) can be assigned to multiple base stations of a radio access network (RAN). By way of example, PSC-based scrambling codes can be created from a plurality of M-sequences generated from a common polynomial expression. Further, an SSC codebook is provided that selects sequence pairs of a sequence matrix for generating SSCs. Selection can be based on transmission characteristics of resulting SSCs, providing reduced interference in planned, semi-planned and/or unplanned mobile deployments.

摘要翻译： 在此描述利用主同步信道（P-SCH）相关扰码提供二次同步编码。 可将加扰的次同步码（SSCs）分配给无线接入网（RAN）的多个基站。 作为示例，可以从从公共多项式表达式生成的多个M序列中创建基于PSC的扰码。 此外，提供了SSC码本，其选择用于生成SSC的序列矩阵的序列对。 选择可以基于所得SSCs的传输特性，在计划的，半规划的和/或计划外的移动部署中提供减少的干扰。

公开(公告)号：US20110305237A1

公开(公告)日：2011-12-15

申请号：US13214602

申请日：2011-08-22

申请人： Tao Luo ,  Peter Gaal ,  Ke Liu ,  Arun Kannu

发明人： Tao Luo ,  Peter Gaal ,  Ke Liu ,  Arun Kannu

IPC分类号： H04J3/06

CPC分类号： H04W56/001 ,  H04J11/0069 ,  H04J11/0073 ,  H04J11/0076 ,  H04J13/0003 ,  H04J13/10 ,  H04J2011/0096 ,  H04J2013/0096 ,  H04L5/0053 ,  H04L27/2613 ,  H04L27/2626

摘要： Providing for secondary synchronization encoding utilizing a primary synchronization channel (P-SCH)-related scrambling code is described herein. Scrambled secondary synchronization codes (SSCs) can be assigned to multiple base stations of a radio access network (RAN). By way of example, PSC-based scrambling codes can be created from a plurality of M-sequences generated from a common polynomial expression. Further, an SSC codebook is provided that selects sequence pairs of a sequence matrix for generating SSCs. Selection can be based on transmission characteristics of resulting SSCs, providing reduced interference in planned, semi-planned and/or unplanned mobile deployments.

摘要翻译： 在此描述利用主同步信道（P-SCH）相关扰码提供二次同步编码。 可将加扰的次同步码（SSCs）分配给无线接入网（RAN）的多个基站。 作为示例，可以从从公共多项式表达式生成的多个M序列中创建基于PSC的扰码。 此外，提供了SSC码本，其选择用于生成SSC的序列矩阵的序列对。 选择可以基于所得SSCs的传输特性，在计划的，半规划的和/或计划外的移动部署中提供减少的干扰。

公开(公告)号：US09674802B2

公开(公告)日：2017-06-06

申请号：US13214602

申请日：2011-08-22

申请人： Tao Luo ,  Peter Gaal ,  Ke Liu ,  Arun Kannu

发明人： Tao Luo ,  Peter Gaal ,  Ke Liu ,  Arun Kannu

IPC分类号： H04J11/00 ,  H04W56/00 ,  H04L27/26 ,  H04J13/00 ,  H04L5/00

CPC分类号： H04W56/001 ,  H04J11/0069 ,  H04J11/0073 ,  H04J11/0076 ,  H04J13/0003 ,  H04J13/10 ,  H04J2011/0096 ,  H04J2013/0096 ,  H04L5/0053 ,  H04L27/2613 ,  H04L27/2626

摘要： Providing for secondary synchronization encoding utilizing a primary synchronization channel (P-SCH)-related scrambling code is described herein. Scrambled secondary synchronization codes (SSCs) can be assigned to multiple base stations of a radio access network (RAN). By way of example, PSC-based scrambling codes can be created from a plurality of M-sequences generated from a common polynomial expression. Further, an SSC codebook is provided that selects sequence pairs of a sequence matrix for generating SSCs. Selection can be based on transmission characteristics of resulting SSCs, providing reduced interference in planned, semi-planned and/or unplanned mobile deployments.

公开(公告)号：US20090122839A1

公开(公告)日：2009-05-14

申请号：US12245931

申请日：2008-10-06

申请人： Tao Luo ,  Arun P Kannu ,  Ke Liu ,  Peter Gaal

发明人： Tao Luo ,  Arun P Kannu ,  Ke Liu ,  Peter Gaal

IPC分类号： H04B1/00 ,  H04B1/707

CPC分类号： H04J11/0069 ,  H04B1/70735 ,  H04B1/7083 ,  H04J13/0062 ,  H04L27/2613

摘要： Systems and methodologies are described that facilitate employing a scrambling code from a set of scrambling codes, which is indexed by primary synchronization codes (PSCs), to scramble or descramble a secondary synchronization code (SSC). The scrambling codes in the set can be designed to optimize peak-to-average power ratios and/or mitigate cross correlation. For example, the scrambling codes can be based on different M-sequences generated from disparate polynomials. In accordance with another example, the scrambling codes can be based on different cyclic shifts of the same M-sequence. According to another example, the scrambling codes can be based upon binary approximations of possible primary synchronization codes utilized in a wireless communication environment. Pursuant to a further example, the scrambling codes can be based on different Golay complementary sequences.

摘要翻译： 描述了有助于采用来自由主同步码（PSC）索引的一组扰频码的加扰码来加扰或解扰辅同步码（SSC）的系统和方法。 集合中的扰码可以被设计为优化峰均功率比和/或减轻互相关。 例如，扰码可以基于从不同的多项式生成的不同的M序列。 根据另一示例，扰码可以基于相同M序列的不同循环移位。 根据另一示例，扰码可以基于在无线通信环境中使用的可能的主同步码的二进制近似。 根据另一示例，扰码可以基于不同的格雷互补序列。

公开(公告)号：US08503547B2

公开(公告)日：2013-08-06

申请号：US12245931

申请日：2008-10-06

申请人： Tao Luo ,  Arun P. Kannu ,  Ke Liu ,  Peter Gaal

发明人： Tao Luo ,  Arun P. Kannu ,  Ke Liu ,  Peter Gaal

IPC分类号： H04K1/10

CPC分类号： H04J11/0069 ,  H04B1/70735 ,  H04B1/7083 ,  H04J13/0062 ,  H04L27/2613

摘要： Systems and methodologies are described that facilitate employing a scrambling code from a set of scrambling codes, which is indexed by primary synchronization codes (PSCs), to scramble or descramble a secondary synchronization code (SSC). The scrambling codes in the set can be designed to optimize peak-to-average power ratios and/or mitigate cross correlation. For example, the scrambling codes can be based on different M-sequences generated from disparate polynomials. In accordance with another example, the scrambling codes can be based on different cyclic shifts of the same M-sequence. According to another example, the scrambling codes can be based upon binary approximations of possible primary synchronization codes utilized in a wireless communication environment. Pursuant to a further example, the scrambling codes can be based on different Golay complementary sequences.

摘要翻译： 描述了有助于采用来自由主同步码（PSC）索引的一组扰频码的加扰码来加扰或解扰辅同步码（SSC）的系统和方法。 集合中的扰码可以被设计为优化峰均功率比和/或减轻互相关。 例如，扰码可以基于从不同的多项式生成的不同的M序列。 根据另一示例，扰码可以基于相同M序列的不同循环移位。 根据另一示例，扰码可以基于在无线通信环境中使用的可能的主同步码的二进制近似。 根据另一示例，扰码可以基于不同的格雷互补序列。

公开(公告)号：US20090046702A1

公开(公告)日：2009-02-19

申请号：US12166495

申请日：2008-07-02

申请人： Tao Luo ,  Peter Gaal ,  Ke Liu ,  Arun Kannu

发明人： Tao Luo ,  Peter Gaal ,  Ke Liu ,  Arun Kannu

IPC分类号： H04J3/06

CPC分类号： H04W56/001 ,  H04J11/0069 ,  H04J11/0073 ,  H04J11/0076 ,  H04J13/0003 ,  H04J13/10 ,  H04J2011/0096 ,  H04J2013/0096 ,  H04L5/0053 ,  H04L27/2613 ,  H04L27/2626

摘要： Providing for secondary synchronization encoding utilizing a primary synchronization channel (P-SCH)-related scrambling code is described herein. Scrambled secondary synchronization codes (SSCs) can be assigned to multiple base stations of a radio access network (RAN). By way of example, PSC-based scrambling codes can be created from a plurality of M-sequences generated from a common polynomial expression. Further, an SSC codebook is provided that selects sequence pairs of a sequence matrix for generating SSCs. Selection can be based on transmission characteristics of resulting SSCs, providing reduced interference in planned, semi-planned and/or unplanned mobile deployments.

摘要翻译： 在此描述利用主同步信道（P-SCH）相关扰码提供二次同步编码。 可将加扰的次同步码（SSCs）分配给无线接入网（RAN）的多个基站。 作为示例，可以从从公共多项式表达式生成的多个M序列中创建基于PSC的扰码。 此外，提供了SSC码本，其选择用于生成SSC的序列矩阵的序列对。 选择可以基于所得SSCs的传输特性，在计划的，半规划的和/或计划外的移动部署中提供减少的干扰。

公开(公告)号：US08467480B2

公开(公告)日：2013-06-18

申请号：US12878906

申请日：2010-09-09

申请人： Ke Liu ,  Kibeom Seong ,  Tao Luo ,  Yongbin Wei

发明人： Ke Liu ,  Kibeom Seong ,  Tao Luo ,  Yongbin Wei

IPC分类号： H03D1/00 ,  H04L27/06

CPC分类号： H04L1/0045 ,  H04L1/08

摘要： Decision metrics used to decode wireless communication payloads are combined for successive frames to improve decoding of the later received frames. A bitwise payload difference between successive frames is encoded in the same manner the payloads are encoded. Decision metrics determined for the earlier received frame are combined with the encoded payload difference to generate adjusted decision metrics. The adjusted decision metrics are combined with decision metrics determined for the later received frame. The combined decision metrics are decoded to generate a payload for the later received frame. If the decoding is not successful the combined decision metrics are carried forward and the process is repeated based on the payload difference between the following frames.

摘要翻译： 用于解码无线通信有效载荷的决策度量被组合用于连续的帧，以改进后续接收的帧的解码。 连续帧之间的按位有效负载差异以有效载荷编码的相同方式进行编码。 将针对较早接收到的帧确定的决策度量与经编码的有效载荷差值相组合以产生经调整的决策度量。 经调整的决策度量与为稍后接收的帧确定的决策度量相结合。 对组合决策度量进行解码，以生成稍后接收的帧的有效载荷。 如果解码不成功，则组合决策度量被转发，并且基于以下帧之间的有效负载差重复该过程。

公开(公告)号：US20120044928A1

公开(公告)日：2012-02-23

申请号：US13212829

申请日：2011-08-18

申请人： Kapil Bhattad ,  Tao Luo ,  Taesang Yoo ,  Xiaoxia Zhang ,  Xiliang Luo ,  Ke Liu ,  Durga Prasad Malladi

发明人： Kapil Bhattad ,  Tao Luo ,  Taesang Yoo ,  Xiaoxia Zhang ,  Xiliang Luo ,  Ke Liu ,  Durga Prasad Malladi

IPC分类号： H04J3/06

CPC分类号： H04J11/0083 ,  H04B1/70718 ,  H04L5/0007 ,  H04W28/04 ,  H04W48/16 ,  H04W88/02

摘要： User equipment (UE) associated with synchronous networks operate in a synchronous mode while UEs associated with asynchronous networks operate in an asynchronous mode. When operating in a synchronous mode, a UE can significantly improve performance of synchronization signal detection, data decoding, and tracking loop management by using the interference cancellation (IC) techniques that are not available in an asynchronous mode of operation. Obtaining synchronization indicators and determining the synchronization status of the current network by UE is disclosed. The determination may be based on the synchronization indicator, whether detected through signal detection, signal measurements, signal analysis, or the like.

摘要翻译： 与同步网络相关联的用户设备（UE）以同步模式工作，而与异步网络相关联的UE以异步模式工作。 当在同步模式下工作时，UE可以通过使用在异步操作模式中不可用的干扰消除（IC）技术来显着提高同步信号检测，数据解码和跟踪环路管理的性能。 公开了获取同步指示符并确定UE当前网络的同步状态。 该确定可以基于通过信号检测，信号测量，信号分析等检测的同步指示器。