公开(公告)号：US07844013B2

公开(公告)日：2010-11-30

申请号：US11912630

申请日：2006-04-24

申请人： Masayuki Hoshino ,  Ryohei Kimura ,  Yasuaki Yuda ,  Tomohiro Imai ,  Kenichi Miyoshi ,  Akihiko Nishio

发明人： Masayuki Hoshino ,  Ryohei Kimura ,  Yasuaki Yuda ,  Tomohiro Imai ,  Kenichi Miyoshi ,  Akihiko Nishio

IPC分类号： H04L27/00

CPC分类号： H04B7/0669 ,  H04B7/0417 ,  H04B7/063 ,  H04B7/0632 ,  H04B7/0673 ,  H04B17/24 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/004 ,  H04L1/1867 ,  H04W52/267

摘要： A link adaptation method and others wherein feedback information amount can be reduced. According to this method, a receiving apparatus (100) calculates, based on a channel matrix, a capacity (C) and a stream ratio (r) that is a ratio of the reception qualities of streams, and then transmits, as feedback information, the calculated capacity (C) and stream ratio (r) to a transmitting apparatus. In the transmitting apparatus (200), the number of transmittable streams, the modulation scheme and the fed-back capacity (C) are used to calculate the encoding ratio (R) and sequence length (S) of spatial multiplexed symbols. Then, the modulation scheme (M1-Mn) of each stream is decided based on the fed-back stream ratio (r) and the sequence length (S) of spatial multiplexed symbols.

摘要翻译： 链路适配方法等可以减少反馈信息量。 根据该方法，接收装置（100）基于信道矩阵计算作为流的接收质量的比率的容量（C）和流比（r），然后作为反馈信息， 计算的容量（C）和流量比（r）。 在发送装置（200）中，使用可发送流的数量，调制方式和反馈容量（C）来计算空间复用符号的编码率（R）和序列长度（S）。 然后，基于反馈流比（r）和空间复用符号的序列长度（S）来决定各流的调制方式（M1-Mn）。

公开(公告)号：US08730891B2

公开(公告)日：2014-05-20

申请号：US13256588

申请日：2010-03-15

申请人： Yoshihiko Ogawa ,  Akihiko Nishio ,  Daichi Imamura ,  Seigo Nakao ,  Takashi Iwai ,  Yasuaki Yuda ,  Ayako Horiuchi ,  Megumi Ichikawa

发明人： Yoshihiko Ogawa ,  Akihiko Nishio ,  Daichi Imamura ,  Kenichi Miyoshi ,  Seigo Nakao ,  Takashi Iwai ,  Yasuaki Yuda ,  Ayako Horiuchi

IPC分类号： H04W4/00

CPC分类号： H04L27/2628 ,  H04L5/0007 ,  H04L5/0094 ,  H04L27/2647 ,  H04W72/042 ,  H04W72/0453

摘要： Disclosed is a wireless communication apparatus and wireless communication method wherein flexible frequency scheduling is performed without increasing the scale of the DFT (Discrete Fourier Transform) circuitry. For example, when resource allocation information is reported indicating whether or not a resource has been allocated to each of a plurality of RBGs (RB groups) into which the system bandwidth is divided, as in Type 0 allocation, if the number of reported RBs reported by the resource allocation information cannot be expressed as “2^n×3^m×5^l”, an allocated RB number setting section (208) sets the number of allocated resource blocks used in the actual transmission band, corresponding to the reported RB number, to the number of resource blocks that can be represented by any of “2^n×3^m×5^l”, and an allocated RB selection section (209); selects the allocated RB employed in the actual transmission band from the resource allocation information and allocated RB number.

摘要翻译： 公开了一种无线通信装置和无线通信方法，其中在不增加DFT（离散傅里叶变换）电路的规模的情况下执行灵活的频率调度。 例如，当在类型0分配中报告资源分配信息，指示资源是否已被分配给分配了系统带宽的多个RBG（RB组）中的每一个的资源时，如果所报告的RB的数量被报告 通过资源分配信息不能表示为“2 ^ n×3 ^ m×5 ^ l”，分配的RB号码设定部（208）设定与实际的传输频带对应的分配的资源块的数量 RB编号，可以由任何“2 ^ n×3 ^ m×5 ^ l”表示的资源块数和分配的RB选择部分（209）。 从资源分配信息和分配的RB号中选择在实际传输频带中使用的分配的RB。

公开(公告)号：US20110105016A1

公开(公告)日：2011-05-05

申请号：US12919366

申请日：2009-02-26

申请人： Yoshiko Saito ,  Takashi Aramaki ,  Kenichi Miyoshi ,  Katsuhiko Hiramatsu ,  Hideshi Taki ,  Daichi Imamura ,  Ayako Horiuchi ,  Yuichi Kobayakawa

发明人： Yoshiko Saito ,  Takashi Aramaki ,  Kenichi Miyoshi ,  Katsuhiko Hiramatsu ,  Hideshi Taki ,  Daichi Imamura ,  Ayako Horiuchi ,  Yuichi Kobayakawa

IPC分类号： H04B3/36

CPC分类号： H04B7/15507 ,  H04B7/2606 ,  H04W28/06 ,  H04W36/06 ,  H04W88/04

摘要： Provided is a mobile communication system capable of eliminating the use of a control channel for transmitting specific area information and suppressing the overhead caused by a frequency change process for a mobile station to receive the specific area information. In the mobile communication system, a relay station (20) has a coverage area (21) (specific area) and relays and transmits, in the coverage area (21), a signal received from a base station (10) to a mobile station (30). The relay station (20) adds, to the signal received from the base station (10), the offset of any of a frequency offset, a time offset, and a power offset depending on a risk indicated by risk information in the coverage area (21) (specific area) and transmits the signal after the addition of the offset to the mobile station (30) located in the coverage area (21).

摘要翻译： 提供一种能够消除用于发送特定区域信息的控制信道的使用并且抑制由移动站接收特定区域信息的频率变化处理引起的开销的移动通信系统。 在移动通信系统中，中继站（20）具有覆盖区域（21）（特定区域），并且在覆盖区域（21）中中继发送从基站（10）向移动台 （30）。 中继站（20）根据由覆盖区域（10）中的风险信息所指示的风险，将从基站（10）接收到的信号中的任何偏移，时间偏移和功率偏移相加， 21）（特定区域），并且在添加偏移之后将信号发送到位于覆盖区域（21）中的移动站（30）。

公开(公告)号：US20100195700A1

公开(公告)日：2010-08-05

申请号：US12665012

申请日：2008-06-17

申请人： Yoshihiko Ogawa ,  Daichi Imamura ,  Kenichi Miyoshi ,  Takashi Iwai ,  Tomofumi Takata

发明人： Yoshihiko Ogawa ,  Daichi Imamura ,  Kenichi Miyoshi ,  Takashi Iwai ,  Tomofumi Takata

IPC分类号： H04B1/00

CPC分类号： H04L25/0258 ,  H04J13/0062 ,  H04J13/10 ,  H04L7/007 ,  H04L7/042 ,  H04W72/042

摘要： Provided is a cyclic shift sequence generation method which can prevent coming of an interference wave into a desired wave detection window even if a cyclic shift sequence has a high mutual correlation in different bandwidths, thereby improving a channel estimation accuracy in a base station. In this method, a cyclic shift sequence number to be allocated to a cell is decided in advance. Moreover, when the cyclic shift amount between cyclic shift sequences allocated in cells is Δ1 and the cyclic shift amount of the cyclic shift sequences allocated between the cells is Δ2, Δ1 and Δ2 are made different when generating a cyclic shift sequence.

摘要翻译： 提供了一种循环移位序列生成方法，即使循环移位序列在不同带宽中具有高相互关系，也能够防止干扰波进入期望的波检测窗口，从而提高基站中的信道估计精度。 在该方法中，预先决定分配给单元的循环移位序列号。 此外，当在单元中分配的循环移位序列之间的循环移位量为＆Dgr1，并且在单元之间分配的循环移位序列的循环移位量为＆Dgr; 2，＆Dgr; 1和＆Dgr; 2在生成 循环移位序列。

公开(公告)号：US08774253B2

公开(公告)日：2014-07-08

申请号：US13383389

申请日：2010-07-27

申请人： Kenichi Miyoshi ,  Daichi Imamura ,  Yoshiko Saito

发明人： Kenichi Miyoshi ,  Daichi Imamura ,  Yoshiko Saito

IPC分类号： H04B3/36

CPC分类号： H04B7/0667 ,  H04B7/026 ,  H04B7/15528 ,  H04L1/0003 ,  H04L1/0071 ,  H04L1/06 ,  H04L25/03286 ,  H04L2001/0097

摘要： Disclosed is a wireless relay device wherein the number of stream multiplexes between a wireless transmission device and a wireless reception device can be increased without increasing the number of antennas for the wireless transmission device or the number of antennas for the wireless reception device. Specifically disclosed is a wireless relay device (100) for relaying and transmitting a signal between a wireless transmission device and a wireless reception device, which has Nrelay number (Nrelay is a natural number of 2 or more) of antenna ports, wherein a diversity reception unit (106) diversity-receives the signal which is transmitted from the wireless transmission device, and which has been modulated by the modulation multi-value number of M (where M=Nrelay 2) via the Nrelay number of antenna ports, a stream generating unit (112) divides the signal so as to generate Nrelay pieces of streams, modulation units ((114-1) to (114-Nrelay)) QPSK-modulate the Nrelay pieces of streams, and transmission RF units ((115-1) to (115-Nrelay)) transmit the N pieces of streams after modulation to the wireless reception device via the Nrelay number of antenna ports.

摘要翻译： 公开了一种无线中继设备，其中可以增加无线传输设备和无线接收设备之间的多路复用数量，而不增加无线传输设备的天线数量或无线接收设备的天线数量。 具体公开了一种无线中继设备（100），用于在无线传输设备和无线接收设备之间中继和发送信号，所述无线传输设备和无线接收设备具有天线端口的N间隔号（Nrelay是2或更多的自然数），其中分集接收 单元（106）分集 - 接收从无线传输设备发送的信号，并且已经经由Nrelay个天线端口的调制多值数M（其中M = Nrelay 2）调制的信号，产生 单元（112）对信号进行分割，以产生N个相邻的流，调制单元（（114-1）至（114-Nrelay））对Nrelay个流进行QPSK调制，以及发送RF单元（（115-1） 到（115-Nrelay））经由Nrelay个天线端口将调制后的N个流发送到无线接收装置。

公开(公告)号：US20120051301A1

公开(公告)日：2012-03-01

申请号：US13203950

申请日：2010-03-01

申请人： Yoshiko Saito ,  Kenichi Miyoshi ,  Megumi Ichikawa ,  Daichi Imamura

发明人： Yoshiko Saito ,  Kenichi Miyoshi ,  Megumi Ichikawa ,  Daichi Imamura

IPC分类号： H04W72/04

CPC分类号： H04B7/0684 ,  H04L1/0625 ,  H04L1/0631 ,  H04L1/0643 ,  H04L25/0224

摘要： A radio transmitting apparatus wherein even if a preamble sequence transmitted via any one of the antennas of the radio transmitting apparatus is detected, the order of the space diversity can be determined with reliability and data signals can be normally decoded. In this apparatus, a deciding unit (101) decides preamble sequences the number of which is equal to the order of the space diversity and further decides transmission block intervals the number of which is equal to or greater than the order of the space diversity. An allocating unit (102) sequentially allocates the preamble sequences, the number of which is equal to the order of the space diversity, to the respective antennas, the number of which is equal to the order of the space diversity, within the respective transmission block intervals. The allocating unit (102) allocates different ones of the preamble sequences to the respective antennas at the respective same transmission timings that are within the respective transmission block intervals.

摘要翻译： 一种无线发送装置，其中即使检测到通过无线发送装置的任一天线发送的前同步码序列，也可以利用可靠性确定空间分集的顺序，并且可以正常解码数据信号。 在该装置中，决定单元（101）确定其数量等于空间分集的顺序的前导序列，并且进一步确定数量等于或大于空间分集的顺序的传输块间隔。 分配单元（102）将数量等于空间分集的顺序的前导序列顺序分配给各个天线的数量等于各个发送块内的空间分集的次数 间隔 分配单元（102）以相应的发送块间隔内的各个相同的发送定时将不同的前导码序列分配给各个天线。

公开(公告)号：US20120014373A1

公开(公告)日：2012-01-19

申请号：US13258996

申请日：2010-03-25

申请人： Kenichi Miyoshi ,  Yoshiko Saito ,  Daichi Imamura

发明人： Kenichi Miyoshi ,  Yoshiko Saito ,  Daichi Imamura

IPC分类号： H04W56/00

CPC分类号： H04L25/0204 ,  H04J13/10 ,  H04L25/0226 ,  H04L25/0248

摘要： Provided is a wireless transmitter capable of accurately specifying the number of multiplexed streams and correctly decoding the data signals when a preamble sequence transmitted from any antenna of a wireless transmitter is detected. In this device, a multiplex count determination unit (101) determines the number of streams used by the device itself from the same number of candidates as the number of spatially multiplexed streams. A sequence group generator (104) forms a plurality of preamble sequences into the same number of groups as the number of candidates, which is the number of streams. A sequence group selector (105) selects the group matching the number of streams determined by the multiplex count determination unit (101) from a plurality of groups. A preamble generator (106) selects the same number of preamble sequences as the number of streams in the group selected by the sequence group selector (105) and generates the preamble sequence used by the device itself.

摘要翻译： 提供一种当检测到从无线发射机的任何天线发送的前导码序列时，能够精确地指定多路复用流的数量并正确解码数据信号的无线发射机。 在该装置中，多路复用计数确定单元（101）从与空间多路复用流数相同的候选数量确定装置本身使用的流数。 序列组生成器（104）形成与作为流的数量的候选数相同数量的组的多个前同步码序列。 序列组选择器（105）从多个组中选择与由多路复用计数确定单元（101）确定的流数相匹配的组。 前导码生成器（106）选择与由序列组选择器（105）选择的组中的流的数量相同数量的前同步码序列，并生成由设备本身使用的前同步码序列。

公开(公告)号：US20120014279A1

公开(公告)日：2012-01-19

申请号：US13202747

申请日：2010-02-23

申请人： Kenichi Miyoshi ,  Megumi Ichikawa ,  Yoshiko Saito ,  Shinsuke Takaoka ,  Daichi Imamura ,  Seigo Nakao ,  Fumiyuki Adachi

发明人： Kenichi Miyoshi ,  Megumi Ichikawa ,  Yoshiko Saito ,  Shinsuke Takaoka ,  Daichi Imamura ,  Seigo Nakao ,  Fumiyuki Adachi

IPC分类号： H04W24/00

CPC分类号： H04B7/0413 ,  H04B7/0617 ,  H04B7/0628 ,  H04B7/063 ,  H04B7/0639 ,  H04L5/0023 ,  H04W72/044

摘要： A wireless transmission apparatus able to reliably increase outage capacity according to the state of a propagation path. This apparatus is a wireless transmission apparatus (100) which transmits a plurality of streams to a wireless reception apparatus; wherein a time/space allocation determining unit (107) determines the spatial multiplex stream number based on the desired multipath number and the number of reception antenna ports of the wireless reception apparatus, said desired multipath number being calculated based on the detected multipath number, the number of reception antenna ports, and the desired error rate for the plurality of streams; a stream dividing unit (109) divides the transmission data into a plurality of streams of that spatial multiplex stream number; a transmission weight calculation unit (108) calculates a transmission weight based on the desired multipath number, spatial multiplex stream number, and a channel estimation value; and a time precoding unit (1103) and a spatial precoding unit (111) use the transmission weight to precode the plurality of streams.

摘要翻译： 一种能够根据传播路径的状态可靠地增加中断容量的无线发送装置。 该装置是向无线接收装置发送多个流的无线发送装置（100） 其中，时间/空间分配确定单元（107）基于所希望的多路径数目和所述无线接收装置的接收天线端口的数量来确定所述空间多路复用流号码，所述多路径数目是根据检测到的多路径数量来计算的， 接收天线端口数量，以及多个流的期望误码率; 流分割单元（109）将传输数据划分成多个流的空间复用流号码; 传输权重计算单元（108）基于所需的多路径数，空间复用流号和信道估计值来计算发送权重; 并且时间预编码单元（1103）和空间预编码单元（111）使用传输权重来对多个流进行预编码。

公开(公告)号：US20120008532A1

公开(公告)日：2012-01-12

申请号：US13141181

申请日：2009-12-24

申请人： Kenichi Miyoshi ,  Megumi Ichikawa ,  Daichi Imamura ,  Seigo Nakao

发明人： Kenichi Miyoshi ,  Megumi Ichikawa ,  Daichi Imamura ,  Seigo Nakao

IPC分类号： H04W92/00

CPC分类号： H04W52/286 ,  H04L1/1819 ,  H04L1/1887 ,  H04W52/346

摘要： A wireless communication apparatus enabling improved system throughput while limiting the amount of signaling for feedback information. In this apparatus, a setting unit (101) sets transmission power differently for each of a plurality of sub-packets obtained by dividing transmission data (transmission packet). Here, the setting unit (101) sets transmission power differently for each of the plurality of sub-packets so that the total transmission power for the plurality of sub-packets becomes the same as the transmission power that is allocated in advance to the transmission packet that constitutes the plurality of sub-packets. A dividing unit (102) divides the transmission data (transmission packet) into a plurality of sub-packets. Then, a transmitting wireless communication apparatus (100) transmits the plurality of sub-packets in order of sub-packets of higher transmission power (lower error rate).

摘要翻译： 一种无线通信装置，其能够在限制用于反馈信息的信令量的同时改善系统吞吐量。 在该装置中，设置单元（101）对通过分割发送数据（发送分组）而获得的多个子分组中的每一个分组设定不同的发送功率。 这里，设置单元（101）针对多个子分组中的每一个分组设置不同的发送功率，使得多个子分组的总发送功率与预先分配给发送分组的发送功率相同 构成多个子包。 分割单元（102）将发送数据（发送分组）划分为多个子分组。 然后，发送无线通信装置（100）以较高的发送功率（较低的错误率）的子分组的顺序发送多个子分组。

公开(公告)号：US20090092072A1

公开(公告)日：2009-04-09

申请号：US11912807

申请日：2006-04-26

申请人： Daichi Imamura ,  Ayako Horiuchi ,  Kenichi Miyoshi

发明人： Daichi Imamura ,  Ayako Horiuchi ,  Kenichi Miyoshi

IPC分类号： H04B7/15

CPC分类号： H04B7/15542 ,  H04W16/26 ,  H04W28/18 ,  Y02D70/446

摘要： A communication relay apparatus wherein the error rate characteristic of a relay destination is improved to raise the throughput, while reducing the given interference power to prevent the reduction of the throughput of the whole communication system. In the apparatus, a signal addressed to a base station is received (ST1010), and a decoding process and other processes are performed (ST1020). A bit error determination is performed (ST1030), and if there is no bit error, a reproduction/relay process (ST1050) is performed. If there is any bit error, a threshold-based determination of reception quality is performed for each of subcarriers (ST1120-1130). If the reception quality is greater than a threshold value, the corresponding subcarrier is outputted (ST1140); otherwise, the corresponding subcarrier is not relayed (ST1150). A signal, which has been subjected to either process, is transmitted (ST1060).

摘要翻译： 一种通信中继装置，其中改善了中继目的地的错误率特性以提高吞吐量，同时降低给定的干扰功率以防止整个通信系统的吞吐量的降低。 在该装置中，接收寻址到基站的信号（ST1010），并执行解码处理和其他处理（ST1020）。 执行位错误判定（ST1030），如果不存在位错误，则进行再现/中继处理（ST1050）。 如果存在任何位错误，则对每个子载波执行基于阈值的接收质量的确定（ST1120-1130）。 如果接收质量大于阈值，则输出相应的副载波（ST1140）; 否则，相应的副载波不被中继（ST1150）。 已经进行了任一处理的信号被传送（ST1060）。