公开(公告)号：US08548008B2

公开(公告)日：2013-10-01

申请号：US12278694

申请日：2007-02-07

申请人： Kengo Oketani ,  Yoshikazu Kakura ,  Toshifumi Sato ,  Shousei Yoshida

发明人： Kengo Oketani ,  Yoshikazu Kakura ,  Toshifumi Sato ,  Shousei Yoshida

IPC分类号： H04L12/40

CPC分类号： H04L5/0048 ,  H04L5/0007 ,  H04L25/022 ,  H04L25/03159 ,  H04L27/2601 ,  H04L27/261 ,  H04W28/06 ,  H04W88/00

摘要： A memory 21 of a pilot processing circuit 2 holds in advance a pilot sequence converted into a frequency region signal obtained by subjecting a pilot signal symbol transmitted in one block to Ntx_p-point DFT. The pilot sequence held in the memory 21 is subjected to a series of processes including a roll-off filtering by a roll-off filter circuit 22, subcarrier mapping process by subcarrier mapping circuit 23, an Ndft_p-point IDFT operation by an IDFT circuit 24, and a cyclic prefix adding process by a cyclic prefix adding circuit 25.

摘要翻译： 导频处理电路2的存储器21预先保持转换成通过对在一个块中发送的导频信号符号进行Ntx_p点DFT而获得的频域信号的导频序列。 保存在存储器21中的导频序列经过一系列处理，包括滚降滤波器电路22的滚降滤波，副载波映射电路23的子载波映射处理，IDFT电路24的Ndft_p点IDFT操作 ，以及循环前缀添加电路25的循环前缀添加处理。

公开(公告)号：US08363615B2

公开(公告)日：2013-01-29

申请号：US13414530

申请日：2012-03-07

申请人： Kengo Oketani ,  Yoshikazu Kakura

发明人： Kengo Oketani ,  Yoshikazu Kakura

IPC分类号： H04W72/04

CPC分类号： H04L5/0044 ,  H04B2201/70701 ,  H04J13/0059 ,  H04J13/0062 ,  H04J13/16 ,  H04L5/0007 ,  H04L5/0048 ,  H04W28/04 ,  H04W72/04 ,  H04W72/0406 ,  H04W72/042 ,  H04W72/0446

摘要： A mobile station in a wireless communication system including a base station, and a method for the mobile station includes a unit that sends a pilot signal to the base station. A sub-frame used for sending the pilot signal includes a first pilot block and a second pilot block. A first Zadoff-Chu sequence allocated to the first pilot block is different from a second Zadoff-Chu sequence allocated to the second pilot block.

摘要翻译： 包括基站的无线通信系统中的移动台以及移动站的方法包括向基站发送导频信号的单元。 用于发送导频信号的子帧包括第一导频块和第二导频块。 分配给第一导频块的第一Zadoff-Chu序列与分配给第二导频块的第二Zadoff-Chu序列不同。

公开(公告)号：US20120307766A1

公开(公告)日：2012-12-06

申请号：US13572955

申请日：2012-08-13

申请人： Kengo OKETANI ,  Yoshikazu Kakura

发明人： Kengo OKETANI ,  Yoshikazu Kakura

IPC分类号： H04W72/04

CPC分类号： H04L5/0044 ,  H04B2201/70701 ,  H04J13/0059 ,  H04J13/0062 ,  H04J13/16 ,  H04L5/0007 ,  H04L5/0048 ,  H04W28/04 ,  H04W72/04 ,  H04W72/0406 ,  H04W72/042 ,  H04W72/0446

摘要： A mobile station in a communication system including a base station, the mobile station includes a unit for sending a signal that allocates a plurality of different Zadoff-Chu sequences to a frame to the base station.

摘要翻译： 在包括基站的通信系统中的移动站中，移动站包括用于向基站发送向帧分配多个不同的Zadoff-Chu序列的信号的单元。

公开(公告)号：US08243653B2

公开(公告)日：2012-08-14

申请号：US11997869

申请日：2006-08-22

申请人： Kenji Koyanagi ,  Yoshikazu Kakura ,  Jinsock Lee ,  Nahoko Kuroda

发明人： Kenji Koyanagi ,  Yoshikazu Kakura ,  Jinsock Lee ,  Nahoko Kuroda

IPC分类号： H04W4/00 ,  H04J3/06

CPC分类号： H04W36/0005 ,  H04W36/30 ,  H04W56/001 ,  H04W56/0045

摘要： There is provided a wireless communication system which can synchronize a mobile station with a destination base station in response to the mobile station determining to switch base stations. Each base station generates synchronization information to synchronize the mobile station with the base station from a reverse pilot signal received from the mobile station, generates reverse propagation quality information from the reverse pilot signal, and generates and transmits a control signal including the synchronization information and the reverse propagation quality information. A mobile station generates and transmits a reverse pilot signal, receives a signal including the control signal from each of the base stations.

摘要翻译： 提供了一种无线通信系统，其可以响应于移动台确定切换基站而使移动台与目的地基站同步。 每个基站产生同步信息，以从移动台接收到的反向导频信号与移动台同步基站，从反向导频信号生成反向传播质量信息，并产生并发送包括同步信息和 反向传播质量信息。 移动站生成并发送反向导频信号，从每个基站接收包括控制信号的信号。

公开(公告)号：US20120178484A1

公开(公告)日：2012-07-12

申请号：US13496175

申请日：2009-09-15

申请人： Le Liu ,  Yoshikazu Kakura

发明人： Le Liu ,  Yoshikazu Kakura

IPC分类号： H04W72/06

CPC分类号： H04J11/0053

摘要： The object of the present invention is to provide a technology of deciding CoMP point dynamically by considering the spectrum efficiency after channel-dependent scheduling with different possible combinations of CoMP points. According to the present invention, A wireless communication system, characterized in deciding number of CoMP (coordinated multipoint transmission and reception) point to a user equipment by using information related to scheduling.

摘要翻译： 本发明的目的是提供一种通过考虑具有不同可能组合CoMP点的信道相关调度之后的频谱效率来动态地决定CoMP点的技术。 根据本发明，一种无线通信系统，其特征在于，通过使用与调度有关的信息，将用户设备的CoMP（协调多点发送和接收）点数确定为多个。

公开(公告)号：US20120113931A1

公开(公告)日：2012-05-10

申请号：US13352968

申请日：2012-01-18

申请人： Takamichi INOUE ,  Yoshikazu Kakura

发明人： Takamichi INOUE ,  Yoshikazu Kakura

IPC分类号： H04W72/04

CPC分类号： H04L5/005 ,  H04B2201/70701 ,  H04J13/0059 ,  H04J13/0077 ,  H04L5/0007 ,  H04L5/0048 ,  H04L27/2613 ,  H04W28/20

摘要： In a radio communication system, transmission of CAZAC sequences as the pilot signal sequences by using code division multiplexing as at least one of user multiplexing schemes, is done by dividing a system band as a frequency band usable in the system into frequency blocks B1 and B2 having bandwidths W1 and W2, generating the pilot signals of the frequency blocks B1 and B2 with a single carrier, using the pilot signal sequences having sequence lengths L1 and L2 corresponding to frequency blocks B1 and B2 respectively; and, transmitting the generated pilot signals as the pilot signals corresponding individual users, with multicarriers using an arbitrary number of frequency blocks among the plural frequency blocks

摘要翻译： 在无线电通信系统中，通过将系统频带作为系统中可用的频带划分为频率块B1和B2，通过使用码分复用作为用户复用方案中的至少一个来传送CAZAC序列作为导频信号序列 具有带宽W1和W2，分别使用具有对应于频率块B1和B2的序列长度L1和L2的导频信号序列，利用单载波产生频率块B1和B2的导频信号; 以及使用多个频率块中的任意数量的频率块的多载波来发送所生成的导频信号作为与各个用户对应的导频信号

公开(公告)号：US08027400B2

公开(公告)日：2011-09-27

申请号：US10584738

申请日：2004-12-24

申请人： Yoshikazu Kakura

发明人： Yoshikazu Kakura

IPC分类号： H04L1/02

CPC分类号： H04L5/023 ,  H04B1/713 ,  H04B7/0669 ,  H04L1/0006 ,  H04L1/0015 ,  H04L1/0045 ,  H04L1/0071 ,  H04L1/06 ,  H04L27/2608

摘要： In a transmitting portion of a wireless communication apparatus, hopping pattern generating portions 16 and 17 produce hopping patterns independent from each other and specific to a transmitter. Subcarrier assigning portions 18 and 19 assign transmission symbol sequences to subcarriers 1 to R in accordance with the hopping patterns and produce frequency hopping signals. In a receiving portion of the wireless communication apparatus, a MIMO demodulating portion 37 combines and decomposes a FFT signal and produces a demodulated signal. Hopping pattern generating portions 38 and 39 produce unique hopping patterns corresponding to transmitters 1-1 to 1-K, respectively. Subcarrier extracting portions 40 and 41 extract, from the demodulated signal, components corresponding to the hopping patterns and produce the components as partial demodulated sequences, respectively.

摘要翻译： 在无线通信装置的发送部分中，跳频图形生成部16,17产生彼此独立的特定于发送机的跳频图案。 子载波分配部分18和19根据跳频模式将传输符号序列分配给子载波1至R，并产生跳频信号。 在无线通信装置的接收部分中，MIMO解调部分37组合并分解FFT信号并产生解调信号。 跳频模式产生部分38和39分别产生对应于发射机1-1至1-K的唯一跳频模式。 副载波提取部分40和41从解调信号中提取与跳频图形对应的分量，并分别产生部分解调序列。

公开(公告)号：US20110211538A1

公开(公告)日：2011-09-01

申请号：US12673267

申请日：2008-08-04

申请人： Yoshikazu Kakura

发明人： Yoshikazu Kakura

IPC分类号： H04W4/00

CPC分类号： H04W72/042

摘要： A communication system comprises a base station and a mobile station. The base station has resource allocating means for associating basic resources which are M unit resources (M is two or more integer) of a first control channel through which first control information is transmitted with the resources of a second control channel through which second control information is transmitted, allocating at least a part of the basic resources to the first control information, and associating the first control information with the resources of the second control channel corresponding to one of the basic resources allocated to the first control information and first control information transmitting means for transmitting the allocated first control information to the mobile station. The mobile station has second control information transmitting means for receiving the first control information and transmitting second control information by using the resources of the second control channel associated with the first control information.

摘要翻译： 一种通信系统，包括基站和移动台。 基站具有资源分配手段，用于将作为发送第一控制信息的第一控制信道的M个单元资源（M为2个以上的整数）的基本资源与第二控制信道的资源 将所述基本资源的至少一部分分配给所述第一控制信息，以及将所述第一控制信息与所述第二控制信道的资源对应于分配给所述第一控制信息的基本资源之一和所述第一控制信息发送装置 用于将分配的第一控制信息发送到移动台。 移动站具有第二控制信息发送装置，用于通过使用与第一控制信息相关联的第二控制信道的资源来接收第一控制信息并发送第二控制信息。

公开(公告)号：US20090097465A1

公开(公告)日：2009-04-16

申请号：US12298098

申请日：2007-01-24

申请人： Takamichi Inoue ,  Yoshikazu Kakura

发明人： Takamichi Inoue ,  Yoshikazu Kakura

IPC分类号： H04B7/216

CPC分类号： H04L5/005 ,  H04B2201/70701 ,  H04J13/0059 ,  H04J13/0077 ,  H04L5/0007 ,  H04L5/0048 ,  H04L27/2613 ,  H04W28/20

摘要： In a radio communication system, transmission of CAZAC sequences as the pilot signal sequences by using code division multiplexing as at least one of user multiplexing schemes, is done by dividing a system band as a frequency band usable in the system into frequency blocks B1 and B2 having bandwidths W1 and W2, generating the pilot signals of the frequency blocks B1 and B2 with a single carrier, using the pilot signal sequences having sequence lengths L1 and L2 corresponding to frequency blocks B1 and B2 respectively; and, transmitting the generated pilot signals as the pilot signals corresponding individual users, with multicarriers using an arbitrary number of frequency blocks among the plural frequency blocks

摘要翻译： 在无线电通信系统中，通过将系统频带作为系统中可用的频带划分为频率块B1和B2，通过使用码分复用作为用户复用方案中的至少一个来传送CAZAC序列作为导频信号序列 具有带宽W1和W2，分别使用具有对应于频率块B1和B2的序列长度L1和L2的导频信号序列，利用单载波产生频率块B1和B2的导频信号; 以及使用多个频率块中的任意数量的频率块的多载波来发送所生成的导频信号作为与各个用户对应的导频信号

公开(公告)号：US20080152028A1

公开(公告)日：2008-06-26

申请号：US11718510

申请日：2005-10-31

申请人： Hisashi Futaki ,  Yoshikazu Kakura ,  Shousei Yoshida ,  Takumi Ito

发明人： Hisashi Futaki ,  Yoshikazu Kakura ,  Shousei Yoshida ,  Takumi Ito

IPC分类号： H04L27/28

CPC分类号： H04L5/0094 ,  H04L5/0007 ,  H04L5/0046

摘要： N sub-carriers are grouped in units of predetermined quantities in order beginning with the one exhibiting the highest communication channel quality to generate an optimal group pattern on the reception side. Then, communication channel information is calculated for each of sub-carrier groups in the optimal group pattern or a quasi-optimal group pattern which is assumed to be closest to the optimal group pattern among a plurality of previously set group pattern candidates. Communication channel information is designated as modified communication channel information. Grouping information indicative of the optimal group pattern or quasi-optimal group pattern is combined with modified communication channel information to generate feedback information. On the transmission side, sub-carriers are grouped based on reproduced feedback information reproduced from the feedback information.

摘要翻译： N个子载波以预定量的单位被分组，从具有最高通信信道质量的一个开始，以在接收侧生成最佳组模式。 然后，针对多个先前设定的组模式候选中的最佳组模式中的每一个子载波组或被假设为最接近最佳组模式的准最优组模式计算通信信道信息。 通信信道信息被指定为修改的通信信道信息。 将表示最佳组模式或准最佳组模式的分组信息与修改的通信信道信息组合以生成反馈信息。 在发送侧，基于从反馈​​信息再现的再现的反馈信息对子载波进行分组。