公开(公告)号：WO2008057752B1

公开(公告)日：2008-11-13

申请号：PCT/US2007082190

申请日：2007-10-23

Applicant: MOTOROLA INC ,  FUKUTA MASAYA ,  AKITA HIDENORI

Inventor： FUKUTA MASAYA ,  AKITA HIDENORI

IPC: H04J13/00 ,  H04L27/26

CPC classification number: H04L27/2613 ,  H04J11/0069 ,  H04J13/0062 ,  H04J13/0066 ,  H04L5/0007 ,  H04L5/0048 ,  H04L27/2655 ,  H04L27/2675

Abstract: A method and apparatus for transmitting a primary and secondary synchronization channel is provided herein. During operation a transmitter will transmit a primary synchronization channel (P-SCH) in a subframe and a secondary synchronization channel (S-SCH) in the subframe. The S-SCH is modulated by a complex exponential wave and scrambled with a scrambling code. In certain embodiments of the present invention the P-SCH comprises a GCL sequence or a Zadoff-Chu sequence and the scrambling code is based on the GCL sequence index of the P-SCH.

Abstract translation: 本文提供了用于传输主同步信道和辅同步信道的方法和设备。 在操作期间，发射机将在子帧中发送主同步信道（P-SCH），并在子帧中发送辅同步信道（S-SCH）。 S-SCH由复指数波调制并用扰码进行扰码。 在本发明的某些实施例中，P-SCH包括GCL序列或Zadoff-Chu序列，并且扰码基于P-SCH的GCL序列索引。

公开(公告)号：WO2007092692A2

公开(公告)日：2007-08-16

申请号：PCT/US2007061179

申请日：2007-01-27

Applicant: MOTOROLA INC ,  AKITA HIDENORI ,  BAUM KEVIN L ,  CLASSON BRIAN K ,  FUKUTA MASAYA ,  HAYASHI HIROSHI ,  NANGIA VIJAY ,  LOVE ROBERT T ,  STEWART KENNETH A

Inventor： AKITA HIDENORI ,  BAUM KEVIN L ,  CLASSON BRIAN K ,  FUKUTA MASAYA ,  HAYASHI HIROSHI ,  NANGIA VIJAY ,  LOVE ROBERT T ,  STEWART KENNETH A

CPC classification number: H04W48/16 ,  H04J11/0073 ,  H04L27/2613 ,  H04L27/2656 ,  H04L27/266 ,  H04L27/2663

Abstract: A method and apparatus is provided for transmitting an orthogonal frequency domain multiple access (OFDMA) signal including a synchronization channel signal transmitted within a localized portion of a bandwidth of the OFDMA signal (818), the synchronization channel signal having predetermined time domain symmetry within the localized portion of the bandwidth (816) and including information for providing at least partial cell identification information (812). The synchronization channel signal enables an initial acquisition and cell search method with low computational load which provides OFDMA symbol timing detection and frequency error detection (1112) and frame boundary detection and cell specific information detection (1114) in an OFDMA system supporting multiple system bandwidths, both synchronized and un-synchronized systems, a large cell index and an OFDMA symbol structure with both short and long cyclic prefix length.

Abstract translation: 提供了一种用于发送包括在OFDMA信号（818）的带宽的局部部分内发送的同步信道信号的正交频域多址（OFDMA）信号的方法和装置，所述同步信道信号具有在 带宽的局部部分（816）并且包括用于提供至少部分小区识别信息的信息（812）。 同步信道信号支持在支持多个系统带宽的OFDMA系统中提供OFDMA符号定时检测和频率误差检测（1112）和帧边界检测和小区特定信息检测（1114）的具有低计算负荷的初始采集和小区搜索方法， 同步和非同步的系统，大的信元索引和具有短和长循环前缀长度的OFDMA符号结构。

公开(公告)号：WO2008057752A3

公开(公告)日：2008-08-07

申请号：PCT/US2007082190

申请日：2007-10-23

Applicant: MOTOROLA INC ,  FUKUTA MASAYA ,  AKITA HIDENORI

Inventor： FUKUTA MASAYA ,  AKITA HIDENORI

IPC: H04J13/00 ,  H04L27/26

CPC classification number: H04L27/2613 ,  H04J11/0069 ,  H04J13/0062 ,  H04J13/0066 ,  H04L5/0007 ,  H04L5/0048 ,  H04L27/2655 ,  H04L27/2675

Abstract: A method and apparatus for transmitting a primary and secondary synchronization channel is provided herein. During operation a transmitter will transmit a primary synchronization channel (P-SCH) in a subframe and a secondary synchronization channel (S-SCH) in the subframe. The S-SCH is modulated by a complex exponential wave and scrambled with a scrambling code. In certain embodiments of the present invention the P-SCH comprises a GCL sequence or a Zadoff-Chu sequence and the scrambling code is based on the GCL sequence index of the P-SCH.

Abstract translation: 本文提供了用于发送主同步信道和辅同步信道的方法和装置。 在操作期间，发射机将在子帧中发送子帧中的主同步信道（P-SCH）和子帧中的辅同步信道（S-SCH）。 S-SCH由复指数波调制并用扰码加扰。 在本发明的某些实施例中，P-SCH包括GCL序列或Zadoff-Chu序列，并且扰码基于P-SCH的GCL序列索引。

公开(公告)号：WO2007103599A3

公开(公告)日：2008-01-31

申请号：PCT/US2007061283

申请日：2007-01-30

Applicant: MOTOROLA INC ,  AKITA HIDENORI ,  FUKUTA MASAYA ,  HAYASHI HIROSHI

Inventor： AKITA HIDENORI ,  FUKUTA MASAYA ,  HAYASHI HIROSHI

IPC: H04B7/208

CPC classification number: H04L5/0037 ,  H04L5/0007

Abstract: A method and apparatus for using both D-FDMA and L-FDMA within a same frequency band is provided herein. The proposed technique scatters the sub-carriers of each D-FDMA user to a frequency band utilized by L-FDMA communications without separating the total band into exclusive D-FDMA and L-FDMA sub-bands. The L-FDMA users are assigned to the gap of the D-FDMA sub-carriers. Therefore, frequency diversity gain of D-FDMA by the proposed method is larger than if D-FDMA and L-FDMA sub-bands were created.

Abstract translation: 本文提供了在相同频带内使用D-FDMA和L-FDMA的方法和装置。 所提出的技术将每个D-FDMA用户的子载波分散到由L-FDMA通信使用的频带，而不将该总带分离成专用的D-FDMA和L-FDMA子带。 将L-FDMA用户分配给D-FDMA子载波的间隙。 因此，所提出的方法的D-FDMA的频率分集增益大于如果D-FDMA和L-FDMA子带被创建。

公开(公告)号：WO2007136931A3

公开(公告)日：2008-12-04

申请号：PCT/US2007065558

申请日：2007-03-30

Applicant: MOTOROLA INC ,  FUKUTA MASAYA ,  AKITA HIDENORI ,  HAYASHI HIROSHI

Inventor： FUKUTA MASAYA ,  AKITA HIDENORI ,  HAYASHI HIROSHI

IPC: H04K1/10

CPC classification number: H04L27/2613 ,  H04B1/70735 ,  H04J13/0066 ,  H04J13/0074 ,  H04J13/14 ,  H04L5/0007 ,  H04L5/0048 ,  H04L27/2655

Abstract: Reference sequences are constructed from distinct "classes" of GCL sequences that have an optimal cyclic cross correlation property. The fast cell search method disclosed detects the "class indices" with simple processing. In a system deployment that uniquely maps sequences of certain class indices along with a circular shift amount in time domain to certain cells/cell IDs, the identification of a sequence index, and its circular shift will therefore provide an identification of the cell ID.

Abstract translation: 参考序列由具有最佳循环互相关性质的GCL序列的不同“类”构成。 所公开的快速小区搜索方法通过简单的处理来检测“类索引”。 在将某些类索引的序列以及时域中的循环移位量唯一地映射到某些小区/小区ID的系统部署中，因此序列索引的标识及其循环移位将提供小区ID的标识。

公开(公告)号：WO2007092693A3

公开(公告)日：2007-12-27

申请号：PCT/US2007061180

申请日：2007-01-27

Applicant: MOTOROLA INC ,  AKITA HIDENORI ,  BAUM KEVIN L ,  CLASSON BRIAN K ,  FUKUTA MASAYA ,  HAYASHI HIROSHI ,  NANGIA VIJAY ,  LOVE ROBERT T ,  STEWART KENNETH A

Inventor： AKITA HIDENORI ,  BAUM KEVIN L ,  CLASSON BRIAN K ,  FUKUTA MASAYA ,  HAYASHI HIROSHI ,  NANGIA VIJAY ,  LOVE ROBERT T ,  STEWART KENNETH A

IPC: H04J11/00

CPC classification number: H04L5/005 ,  H04J11/0073 ,  H04L5/0007 ,  H04L5/0064 ,  H04L27/2613 ,  H04L27/2655 ,  H04L27/2656

Abstract: A method and apparatus is provided for transmitting an orthogonal frequency domain multiple access (OFDMA) signal including a synchronization channel signal transmitted within a localized portion of a bandwidth of the OFDMA signal (818), the synchronization channel signal having predetermined time domain symmetry within the localized portion of the bandwidth (816). The synchronization channel signal enables an initial acquisition and cell search method with low computational load which provides OFDMA symbol timing detection and frequency error detection by differential processing of sequence elements of the synchronization channel signal (1112) and frame boundary detection and cell specific information detection (1114) in an OFDMA system supporting multiple system bandwidths, both synchronized and un-synchronized systems, a large cell index and an OFDMA symbol structure with both short and long cyclic prefix length.

Abstract translation: 提供了用于发送包括在OFDMA信号的带宽的局部部分内发送的同步信道信号的正交频域多址（OFDMA）信号（818）的方法和设备，所述同步信道信号在所述OFDMA信号 带宽的本地化部分（816）。 同步信道信号实现具有低计算负荷的初始捕获和小区搜索方法，其通过对同步信道信号（1112）的序列元素进行差分处理来提供OFDMA码元定时检测和频率误差检测，并且帧边界检测和小区特定信息检测（ 1114）在OFDMA系统中支持多系统带宽，同步和非同步系统，大小区索引和具有短和长循环前缀长度的OFDMA符号结构。

公开(公告)号：WO2007092694A2

公开(公告)日：2007-08-16

申请号：PCT/US2007061181

申请日：2007-01-27

Applicant: MOTOROLA INC ,  AKITA HIDENORI ,  BAUM KEVIN L ,  CLASSON BRIAN K ,  FUKUTA MASAYA ,  HAYASHI HIROSHI ,  NANGIA VIJAY ,  LOVE ROBERT T ,  STEWART KENNETH A

Inventor： AKITA HIDENORI ,  BAUM KEVIN L ,  CLASSON BRIAN K ,  FUKUTA MASAYA ,  HAYASHI HIROSHI ,  NANGIA VIJAY ,  LOVE ROBERT T ,  STEWART KENNETH A

CPC classification number: H04L5/0007 ,  H04L1/1829 ,  H04L5/0023 ,  H04L5/0048 ,  H04L27/2613 ,  H04L27/262 ,  H04L27/2655

Abstract: A method and apparatus is provided for transmitting an orthogonal frequency domain multiple access (OFDMA) signal including a synchronization channel signal transmitted including a plurality of sequence elements intereleaved in time and frequency (610, 640). The synchronization channel signal sequence elements enable an initial acquisition and cell search method with low computational load by providing predetermined time domain symmetry (702, 704) for common sequence elements in OFDMA symbol periods (620, 660) for OFDMA symbol timing detection and frequency error detection in an OFDMA system supporting multiple system bandwidths, both synchronized and un-synchronized systems, a large cell index and an OFDMA symbol structure with both short and long cyclic prefix length.

Abstract translation: 提供了一种用于发送包括发送的同步信道信号的正交频域多址（OFDMA）信号的方法和装置，包括在时间和频率上互相嵌合的多个序列元素（610,640）。 同步信道信号序列元件通过为OFDMA符号周期（620,660）中的公共序列元素提供用于OFDMA符号定时检测和频率误差的预定时域对称性（702,704）来实现具有低计算负荷的初始采集和小区搜索方法 支持多系统带宽的同步和非同步系统的OFDMA系统中的检测，具有短循环前缀长度和长循环前缀长度的大小区索引和OFDMA符号结构。

公开(公告)号：WO2004070979A3

公开(公告)日：2004-10-21

申请号：PCT/US2004002614

申请日：2004-01-30

Applicant: MOTOROLA INC ,  AKITA HIDENORI ,  IKEDA TETSU

Inventor： AKITA HIDENORI ,  IKEDA TETSU

IPC: H04J11/00 ,  H04J20060101 ,  H04K1/10 ,  H04L7/08 ,  H04L27/26 ,  H04L27/28

CPC classification number: H04L27/2663 ,  H04L27/2613

Abstract: To provide high-quality communication even when the power for synchronization preamble is reduced in an OFDM communication system, an OFDM communication transmitter obtains a zero amplitude reduced preamble signal by passing a specified synchronization preamble through an ideal low-pass filter (10) to reduce a signal component near zero amplitude within a time domain, and time-multiplexes (11) the obtained zero amplitude reduced preamble signal with transmit data to generate an OFDM transmit signal. A receiver section (20) of the OFDM communication system determines the cross correlation (19) between a receive signal and a specified synchronization preamble (17), which is patterned the same as the counterpart in a transmitter section of the OFDM communication system, and detects a synchronization position in accordance with the determined cross correlation.

Abstract translation: 为了在OFDM通信系统中减少用于同步前同步码的功率的同时提供高质量的通信，OFDM通信发射机通过使指定的同步前同步码通过理想的低通滤波器（10）来获得零幅度减小的前导信号，以减少 在时域内接近零幅度的信号分量，并且利用发射数据对获得的零幅度减小的前导信号进行时间复用（11）以产生OFDM发射信号。 OFDM通信系统的接收机部分（20）确定接收信号和与OFDM通信系统的发射机部分中的配对相同的指定同步前同步码（17）之间的互相关（19），以及 根据确定的互相关来检测同步位置。