公开(公告)号：US20110222525A1

公开(公告)日：2011-09-15

申请号：US12672253

申请日：2008-08-08

申请人： Takaaki Kishigami ,  Atsushi Sumasu ,  Isamu Yoshii ,  Tomohiro Imai

发明人： Takaaki Kishigami ,  Atsushi Sumasu ,  Isamu Yoshii ,  Tomohiro Imai

IPC分类号： H04J1/00

CPC分类号： H04W16/12 ,  H04B17/382 ,  H04J11/005 ,  H04L5/0005 ,  H04L5/0037 ,  H04L5/006 ,  H04L5/0062 ,  H04L5/0094 ,  H04W72/082

摘要： It is possible to realize reduction of inter-cell interference by an adaptive FFR with a low delay. A terminal (200) includes: an interference condition detection unit (209) which detects an interference condition of other cell to the local cell; a cell identification unit (210) which acquires signals for cell identification of each base station; and a sub-band selection unit (211) which selects a sub-band used for the downstream line transmission to the local station according to the interference condition detected by the interference condition detection unit (209) and the signals for cell identification of each base station obtained by the cell identification unit (210). Thus, the terminal (200) can autonomously select a small sub-band of inter-cell interference and to realize reduction of the inter-cell interference by the adaptive FFR with a low delay.

摘要翻译： 可以通过具有低延迟的自适应FFR来实现小区间干扰的降低。 终端（200）包括：干扰状况检测单元（209），其检测其他小区对本地小区的干扰状况; 小区识别单元，其获取每个基站的小区识别信号; 以及根据由干扰条件检测单元（209）检测到的干扰条件和每个基站的小区识别信号，选择用于到本地站的下行线路传输的子带的子带选择单元（211） 由小区识别单元（210）获得的站。 因此，终端（200）可以自主地选择小区间小区间干扰，并以低延迟实现自适应FFR的小区间干扰减少。

公开(公告)号：US20110161772A1

公开(公告)日：2011-06-30

申请号：US13060634

申请日：2009-09-01

申请人： Isamu Yoshii ,  Kenichi Kuri ,  Takaaki Kishigami

发明人： Isamu Yoshii ,  Kenichi Kuri ,  Takaaki Kishigami

IPC分类号： H03M13/05 ,  G06F11/10

CPC分类号： H03M13/1102 ,  H03M13/255 ,  H03M13/6306 ,  H04L1/0057 ,  H04L1/1819 ,  H04L1/1893

摘要： Disclosed is a wireless communication device capable of always obtaining the optimum error rate characteristic and of keeping the number of retransmissions to a minimum for IR-based HARQ which uses LDPC encoding in the error correction encoding. With the device, an RV control unit (102) controls the system check bit transmission sequence such that all of the system check bits included in an LDPC code word are transmitted with the first transmission in sequence from the smallest column weight of a check matrix, and controls the transmission sequence of multiple RVs such that multiple RVs comprising only system check bits are transmitted in sequence from the smallest column weight when an RV is transmitted additionally after all of the parity bits included in an LDPC code word have been transmitted. In addition, a modulation unit (103) maps a symbol, composed of system check bits belonging to each of the multiple RVs and the transmission sequences of which are controlled by the RV control unit (102), to a signal point which differs from the signal point to which was mapped a symbol composed of the system check bits transmitted with the first transmission.

摘要翻译： 公开了一种无线通信设备，其能够始终将纠错编码中使用LDPC编码的基于IR的HARQ获得最佳误码率特性并将重发次数保持在最小。 利用该装置，RV控制单元（102）控制系统校验位传输序列，使得包括在LDPC码字中的所有系统校验位按照从校验矩阵的最小列权重开始的第一次传输， 并且控制多个RV的发送序列，使得仅在发送了包括在LDPC码字中的所有奇偶校验位之后，另外发送RV时，从最小列权重开始，依次发送仅包括系统校验位的多个RV。 此外，调制单元（103）将属于多个RV中的每一个的系统校验位和由RV控制单元（102）控制的发送序列组成的符号映射到不同于 信号点被映射到由第一传输发送的系统校验位组成的符号。

公开(公告)号：US20100254485A1

公开(公告)日：2010-10-07

申请号：US12746750

申请日：2008-12-12

申请人： Isamu Yoshii ,  Atsushi Sumasu ,  Tomohiro Imai ,  Hidenori Kayama ,  Hidenori Matsuo ,  Yoshiko Saito ,  Seigo Nakao ,  Shinsuke Takaoka

发明人： Isamu Yoshii ,  Atsushi Sumasu ,  Tomohiro Imai ,  Hidenori Kayama ,  Hidenori Matsuo ,  Yoshiko Saito ,  Seigo Nakao ,  Shinsuke Takaoka

IPC分类号： H04L27/00

CPC分类号： H04B7/0671 ,  H04B7/0413 ,  H04B7/0613 ,  H04B7/0684 ,  H04B7/10

摘要： It is possible to provide a novel pilot transmission method which can calculate an accurate channel estimation value, a MIMO transmission device using the pilot transmission method, and a MIMO reception device which communicates with the MIMO transmission device. The MIMO transmission device (100) includes phase adjustment units (130-1, 130-2) which are controlled by a pilot transmission control unit (170) to multiply parallel pilot signals by a phase adjustment coefficient group so as to adjust the pilot signal transmission timing. The pilot transmission control unit (170) differentiates the order of the transmitting antennas in accordance with the pilot transmission timing between an even-number subcarrier group and an odd-number subcarrier group. At a reception side, a path not influenced by the inter-path interference is extracted for each of the combinations of the transmitting antennas and the subcarrier groups. A channel estimation value is calculated according to the extracted path so as to improve the channel estimation accuracy.

摘要翻译： 可以提供一种可以计算准确的信道估计值的新型导频传输方法，使用导频传输方法的MIMO传输装置和与MIMO传输装置进行通信的MIMO接收装置。 MIMO传输设备（100）包括由导频传输控制单元（170）控制以将并行导频信号乘以相位调整系数组的相位调整单元（130-1,130-2），以便调整导频信号 传输时机。 导频传输控制单元根据偶数子载波组和奇数子载波组之间的导频发送定时来区分发送天线的顺序。 在接收侧，针对发送天线和子载波组的每个组合提取不受路径间干扰影响的路径。 根据提取的路径计算信道估计值，以提高信道估计精度。

公开(公告)号：US20100284487A1

公开(公告)日：2010-11-11

申请号：US12812449

申请日：2009-01-14

申请人： Atsushi Sumasu ,  Isamu Yoshii ,  Tomohiro Imai ,  Daichi Imamura ,  Seigo Nakao

发明人： Atsushi Sumasu ,  Isamu Yoshii ,  Tomohiro Imai ,  Daichi Imamura ,  Seigo Nakao

IPC分类号： H04L27/00

CPC分类号： H04J11/0083 ,  H04B7/068

摘要： A wireless transmission method for improving the reception characteristic of a preamble. The wireless transmission method allows the patterns of subcarriers (transmitting antenna Tx1: 1, 2, 3, 5, 6, 7, 8, . . . , transmitting antenna Tx2: 4, 9, 10, 12, 13, 14, . . . ) in which preamble sequences are continuously arranged to be changed in a frequency direction. With this, the preamble sequences can be arranged at random subcarrier intervals and, when the autocorrelation values of the preamble sequences are obtained in a time domain, the peak value of the sidelobe becomes small, thereby making it possible to prevent a timing detection error.

摘要翻译： 一种用于改善前导码的接收特性的无线传输方法。 无线发送方法允许子载波的模式（发送天线Tx1：1,2,3,5,6,7,8 ...，发送天线Tx2：4,9,10,12,13,14，...，14。 ），其中前导序列被连续地布置成在频率方向上改变。 由此，能够以随机子载波间隔配置前导码序列，在时域中获得前导码序列的自相关值时，旁瓣的峰值变小，能够防止定时检测错误。

公开(公告)号：US09226301B2

公开(公告)日：2015-12-29

申请号：US12678099

申请日：2008-09-25

申请人： Isamu Yoshii ,  Atsushi Sumasu ,  Tomohiro Imai ,  Naoya Yosoku ,  Hidenori Kayama

发明人： Isamu Yoshii ,  Atsushi Sumasu ,  Tomohiro Imai ,  Naoya Yosoku ,  Hidenori Kayama

IPC分类号： H04W72/08 ,  H04W72/04 ,  H04W52/24 ,  H04L5/00

CPC分类号： H04W72/082 ,  H04L5/0032 ,  H04W52/243 ,  H04W72/0413

摘要： A wireless base station apparatus includes an interference report receiver configured to receive interference reports transmitted on a shared radio resource from a plurality of wireless terminals that are present in a plurality of adjacent cells that are adjacent to a target cell, the shared radio resource being comprised of a plurality of carriers and being shared between the plurality of adjacent cells, and an adaptive fractional frequency reuse controller configured to control adaptive fractional frequency reuse processing in a downlink of the target cell, based on the received interference reports showing a downlink reception quality, wherein the interference reports are transmitted using selected carriers from the plurality of carriers by the plurality of wireless terminals, based on the downlink reception quality.

摘要翻译： 无线基站装置包括：干扰报告接收器，被配置为从存在于与目标小区相邻的多个相邻小区中的多个无线终端接收在共享无线资源上发送的干扰报告，所述共享无线资源包括 并且在多个相邻小区之间共享，以及自适应分数频率重用控制器，被配置为基于接收到的示出下行链路接收质量的干扰报告来控制目标小区的下行链路中的自适应分数频率重用处理， 其中，所述干扰报告基于所述下行链路接收质量，由所述多个无线终端从所述多个载波中使用所选择的载波来发送。

公开(公告)号：US08787268B2

公开(公告)日：2014-07-22

申请号：US12668151

申请日：2008-07-09

申请人： Isamu Yoshii ,  Atsushi Sumasu ,  Katsuhiko Hiramatsu

发明人： Isamu Yoshii ,  Atsushi Sumasu ,  Katsuhiko Hiramatsu

IPC分类号： H04W4/00 ,  H04W72/00 ,  H04L5/00 ,  H04J11/00 ,  H04W72/04

CPC分类号： H04L5/0007 ,  H04J11/005 ,  H04L5/0037 ,  H04L5/0044 ,  H04L5/0062 ,  H04W72/04

摘要： Disclosed are a radio communication base station device, a radio communication terminal device, and a radio communication method which can reduce interference between adjacent resource blocks even when the DL timing is overlapped with the UL timing at the boundary between an independent allocation band and a cooperation allocation band. When a terminal A is allocated for a UL resource block of the cooperation allocation band serving as a band boundary with the independent allocation band, in ST301, a terminal A transmits a horizontally polarized wave signal to respective terminals B to D, and in ST302, a base station (100) transmits a vertically polarized signal to respective terminals A to D. In ST303, the terminals B to D measure XPD of the received vertically polarized signal and the horizontally polarized signal. In ST304, the terminals B to D transmit the XPD report value to the base station (100). ST305 selects the terminal which has transmitted the largest XPD report value among the XPD report values transmitted from the terminals B to D and allocates the selected terminal to the DL resource block at the band boundary.

摘要翻译： 公开了即使当DL定时与独立分配频带和合作之间的边界处的UL定时重叠时，也可以减少相邻资源块之间的干扰的无线电通信基站装置，无线电通信终端装置和无线电通信方法 分配带。 当分配用作具有独立分配频带的频带边界的协作分配频带的UL资源块的终端A时，在ST301中，终端A将水平偏振波信号发送到各个终端B至D，在ST302中， 基站（100）将垂直极化信号发送到各端子A〜D.在ST303中，端子B〜D测量接收的垂直极化信号的XPD和水平极化信号。 在ST304中，终端B〜D将XPD报告值发送给基站（100）。 在从终端B到D发送的XPD报告值中选择已经发送了最大XPD报告值的终端，并将所选择的终端分配给带边界的DL资源块。

公开(公告)号：US08428184B2

公开(公告)日：2013-04-23

申请号：US13228227

申请日：2011-09-08

申请人： Alexander Golitschek Edler Von Elbwart ,  Christian Wengerter ,  Isamu Yoshii

发明人： Alexander Golitschek Edler Von Elbwart ,  Christian Wengerter ,  Isamu Yoshii

IPC分类号： H04L27/22

CPC分类号： H04L27/18 ,  H04L1/0003 ,  H04L1/1893 ,  H04L27/34

摘要： A method is provided which improves reliability of channel estimation in a digital communication system by reducing the ambiguity in the recognition of received symbols evaluated for the channel estimation. A data word transmitted according to a first mapping of data word values to modulation states is re-transmitted at least once with a second, re-arranged mapping of data word values to modulation states. The second mapping and possible further mappings are generated from the first mapping in a way that the number of different results which can be obtained from combining the transmitted original data symbol and the re-transmitted counterpart data symbol(s) is lower than the number of original modulation states in the first mapping.

摘要翻译： 提供了一种通过减少对为信道估计估计的接收符号的识别中的歧义来提高数字通信系统中的信道估计的可靠性的方法。 根据数据字值到调制状态的第一映射发送的数据字通过数据字值到调制状态的第二次重新排列的映射被重新发送至少一次。 从第一映射生成第二映射和可能的另外的映射，使得可以从组合所发送的原始数据符号和重新发送的对方数据符号获得的不同结果的数量低于 原始调制状态在第一个映射。

公开(公告)号：US08225169B2

公开(公告)日：2012-07-17

申请号：US12438679

申请日：2007-08-24

申请人： Kenichi Kuri ,  Isamu Yoshii ,  Akihiko Nishio ,  Masaru Fukuoka

发明人： Kenichi Kuri ,  Isamu Yoshii ,  Akihiko Nishio ,  Masaru Fukuoka

IPC分类号： H03M13/00

CPC分类号： H03M13/1102 ,  H03M13/6306 ,  H04L1/0041 ,  H04L1/0057 ,  H04L1/0073 ,  H04L1/1812

摘要： A wireless communication device is provided to make it possible to detect errors with high accuracy while to suppress reduction in throughput in the case that an LDPC (Low-Density Parity-Check) code is used for an error correcting code. In the wireless communication device, a CRC (Cyclic Redundancy Check) coding unit (101) for carrying out a CRC coding of a part of a transmitting bit sequence in accordance with a row weight of an examination matrix of the LDPC code, an LDPC coding unit (102) for carrying out the LDPC coding and generating LDPC coding data by using the same examination matrix as used for the LDPC coding carried out in the CRC coding unit (101).

摘要翻译： 提供无线通信装置，以便在将LDPC（低密度奇偶校验）码用于纠错码的情况下，可以高精度地检测错误，同时抑制吞吐量的降低。 在无线通信装置中，根据LDPC码的检查矩阵的行权重执行发送位序列的一部分的CRC编码的CRC（循环冗余校验）编码单元，LDPC编码 单元（102），用于通过使用与用于在CRC编码单元（101）中执行的LDPC编码相同的检查矩阵来执行LDPC编码并生成LDPC编码数据。

公开(公告)号：US08223894B2

公开(公告)日：2012-07-17

申请号：US12941804

申请日：2010-11-08

申请人： Masaru Fukuoka ,  Isamu Yoshii ,  Kenichi Miyoshi

发明人： Masaru Fukuoka ,  Isamu Yoshii ,  Kenichi Miyoshi

IPC分类号： H04L27/06

CPC分类号： H04L27/0008 ,  H04B1/707 ,  H04B7/12 ,  H04L27/34

摘要： A wireless transmission device enabled to improve an error rate performance at a receiver, by acquiring at least one of frequency diversity effect and a time diversity effect while keeping the interference resistance which is acquired by diffusion. In this transmission device, a modulation unit (101) modulates data to create a modulation symbol having in-phase components and quadrature components. An IQ individual spreading unit (102) arranges the diffusion chips, which are obtained by spreading the modulation symbol, of the in-phase components and the quadrature components, in areas extending in diffusion domains set individually for the in-phase components and the quadrature components. An IQ combining unit (103) combines the arranged spreading chips of the in-phase components and the quadrature components.

摘要翻译： 一种能够通过在保持通过扩散获得的干扰电阻的同时获取频率分集效应和时间分集效应中的至少一个而能够提高接收机的错误率性能的无线传输装置。 在该传输装置中，调制单元（101）调制数据以产生具有同相分量和正交分量的调制符号。 IQ个体扩展单元（102）将在同相分量和正交分量中扩展调制符号所获得的扩散芯片布置在对于同相分量和正交分量单独设置的扩散域中延伸的区域中 组件。 IQ组合单元（103）组合了排列的同相分量的扩展芯片和正交分量。

公开(公告)号：US20120140720A1

公开(公告)日：2012-06-07

申请号：US13311292

申请日：2011-12-05

申请人： Akihiko Nishio ,  Isamu Yoshii ,  Takahisa Aoyama

发明人： Akihiko Nishio ,  Isamu Yoshii ,  Takahisa Aoyama

IPC分类号： H04W72/04

CPC分类号： H04L5/0053 ,  H04L5/0007 ,  H04W88/08

摘要： A base station effectively transmits BCH data and includes an encoding unit for encoding the BCH data; a modulation unit for modulating the BCH data after being encoded; a transmission band setting unit for setting a BCH data transmission band in one of sub carriers constituting an OFDM symbol; encoding units for encoding user data, modulation units for modulating user data after being encoded; and an IFFT unit for mapping the BCH data and the user data to each of the sub carriers and performing IFFT to generate an OFDM symbol. Here, the IFFT unit maps the BCH data to the sub carrier existing in the transmission band set by the transmission band setting unit among the plurality of sub carriers.

摘要翻译： 基站有效地发送BCH数据，并且包括用于对BCH数据进行编码的编码单元; 调制单元，用于在编码之后调制所述BCH数据; 传输频带设置单元，用于在构成OFDM符号的子载波之一中设置BCH数据传输频带; 用于编码用户数据的编码单元，用于在编码之后调制用户数据的调制单元; 以及用于将BCH数据和用户数据映射到每个子载波并执行IFFT以生成OFDM符号的IFFT单元。 这里，IFFT单元将BCH数据映射到由多个子载波中的传输频带设置单元设置的传输频带中存在的副载波。