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：US09137685B2

公开(公告)日：2015-09-15

申请号：US13520406

申请日：2011-01-07

申请人： Shinsuke Takaoka ,  Daichi Imamura ,  Kenichi Miyoshi ,  Megumi Ichikawa

发明人： Shinsuke Takaoka ,  Daichi Imamura ,  Kenichi Miyoshi

IPC分类号： H04W24/02 ,  H04L5/00 ,  H04L25/03 ,  H04W72/08 ,  H04L1/00 ,  H04W48/00 ,  H04W92/20 ,  H04W28/06

CPC分类号： H04L5/0073 ,  H04B7/024 ,  H04J11/0053 ,  H04J11/0079 ,  H04L1/00 ,  H04L5/0023 ,  H04L5/0035 ,  H04L5/0082 ,  H04L25/03343 ,  H04L25/03904 ,  H04L25/03955 ,  H04L2025/03777 ,  H04W24/02 ,  H04W28/06 ,  H04W48/00 ,  H04W72/042 ,  H04W72/08 ,  H04W92/20

摘要： Overhead related to precoding (beamforming weight) information to be notified over a backhaul may be reduced while maintaining an ICI reduction effect by coordinated CoMP among a plurality of nodes. A communication apparatus of the invention includes a reception unit that receives precoding information from user equipment, a selection unit that variably controls an amount of the precoding information, which is to be notified to another communication apparatus via a backhaul, in response to positions of frequency resources, and a transmission unit that transmits the precoding information to the other communication apparatus in accordance with the amount of the precoding information controlled by the selection unit.

摘要翻译： 可以减少与通过回程通知的预编码（波束成形权重）信息相关的开销，同时在多个节点之间通过协调的CoMP保持ICI减少效果。 本发明的通信装置包括从用户设备接收预编码信息的接收单元，响应于频率位置可变地控制要通过回程通知另一通信装置的预编码信息量的选择单元 资源，以及根据由选择单元控制的预编码信息的量向其他通信装置发送预编码信息的发送单元。

公开(公告)号：US08737246B2

公开(公告)日：2014-05-27

申请号：US13202747

申请日：2010-02-23

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

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

IPC分类号： G08C15/00

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：US20120120884A1

公开(公告)日：2012-05-17

申请号：US13119796

申请日：2009-08-31

申请人： Qian Yu ,  Masayuki Hoshino ,  Daichi Imamura ,  Kenichi Miyoshi ,  Megumi Ichikawa

发明人： Qian Yu ,  Masayuki Hoshino ,  Daichi Imamura ,  Kenichi Miyoshi ,  Megumi Ichikawa

IPC分类号： H04W74/04 ,  H04W52/04 ,  H04W72/04

CPC分类号： H04B7/0426 ,  H04B7/0452 ,  H04B7/0663

摘要： Interference between users in an MU-MIMO system is minimized by effective precoding, without increasing an overhead of control data. In a wireless communication system in which multiplex communication is possible between multiple UE1, UE2, and BS, a channel estimation and precoding selection unit 539 in BS estimates channels from the respective UE1, UE2 to the BS, determines a precoding matrix P from a projection matrix to make the two channel response matrices orthogonal or nearly orthogonal, and feeds back the precoding matrix P to UE2, and executes precoding on only UE2 of the two. A precoding unit 524 in the UE2 employs the precoding matrix P that has been notified to perform precoding of a data stream, and sends the precoded data stream to the BS.

摘要翻译： 在MU-MIMO系统中的用户之间的干扰通过有效的预编码被最小化，而不增加控制数据的开销。 在可以在多个UE1，UE2和BS之间进行复用通信的无线通信系统中，BS中的信道估计和预编码选择单元539估计来自相应UE1，UE2到BS的信道，从投影中确定预编码矩阵P 矩阵，以使两个信道响应矩阵正交或接近正交，并且将预编码矩阵P反馈到UE2，并且仅在两者的UE2上执行预编码。 UE2中的预编码单元524采用已经通知的预编码矩阵P来执行数据流的预编码，并将预编码的数据流发送到BS。

公开(公告)号：US20120063469A1

公开(公告)日：2012-03-15

申请号：US13256591

申请日：2010-03-15

申请人： Takashi Iwai ,  Akihiko Nishio ,  Daichi Imamura ,  Kenichi Miyoshi ,  Megumi Ichikawa ,  Yoshihiko Ogawa ,  Sadaki Futagi

发明人： Takashi Iwai ,  Akihiko Nishio ,  Daichi Imamura ,  Kenichi Miyoshi ,  Megumi Ichikawa ,  Yoshihiko Ogawa ,  Sadaki Futagi

IPC分类号： H04L12/66

CPC分类号： H04W72/085 ,  H04W72/042

摘要： Provided are a scheduling device and a scheduling method, in which the amount of signaling of frequency resource allocation information can be reduced while the system throughput is maintained. In a base station device (100), a scheduling unit (113) selects, as an allocation resource for a terminal to which resources are to be allocated, at most one cluster band in each of a plurality of allocatable ranges set within a system band and generates allocation resource information including information relating to the selected cluster, and an encoding unit (114), a modulation unit (115), and a transmission RF unit (116) which serve as a transmission means transmit the allocation resource information generated by the scheduling unit (113) to the terminal to which the resources are to be allocated. Among the plurality of allocatable ranges, a first allocatable range is the entire system band, while a second allocatable range is a low frequency-side band or a high frequency-side band when the system band is divided into halves.

摘要翻译： 提供了一种调度装置和调度方法，其中可以在保持系统吞吐量的同时减少频率资源分配信息的信令量。 在基站装置（100）中，调度部（113）在系统频带内设定的多个可分配范围的每一个中，选择作为分配资源的终端的分配资源， 并生成包括与所选择的群集有关的信息的分配资源信息，作为发送单元的编码单元（114），调制单元（115）和发送RF单元（116）发送由 调度单元（113）发送到要向其分配资源的终端。 在多个可分配范围中，第一可分配范围是整个系统频带，而当系统频带被分成两半时，第二可分配范围是低频侧频带或高频侧频带。

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：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：US20120113912A1

公开(公告)日：2012-05-10

申请号：US13256588

申请日：2010-03-15

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

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

IPC分类号： H04W72/04

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 “2̂n×3̂m×5̂l”, 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 “2̂n×3̂m×5̂l”, 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“2n×3m×51”，所分配的RB号码设定部（208）将与报告的RB号相对应的实际传输频带中使用的分配资源块的数量设定为数 可以由“2n×3m×51”中的任一个表示的资源块和分配的RB选择部（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：US20110286502A1

公开(公告)日：2011-11-24

申请号：US13063420

申请日：2009-09-11

申请人： Fumiyuki Adachi ,  Kazuki Takeda ,  Shinsuke Takaoka ,  Kenichi Miyoshi ,  Megumi Ichikawa

发明人： Fumiyuki Adachi ,  Kazuki Takeda ,  Shinsuke Takaoka ,  Kenichi Miyoshi ,  Megumi Ichikawa

IPC分类号： H04L27/01 ,  H04B1/38

CPC分类号： H04L25/497 ,  H04J11/0033 ,  H04L25/0242 ,  H04L25/03159 ,  H04L25/03343

摘要： Disclosed is a wireless transmitter that can prevent deterioration of the error rate characteristic without reducing the data rate during mobile communications also utilizing THP for FDE. In the device, an equivalent channel matrix computation unit (118) computes weights to be used for FDE of a transmission block and an equivalent channel matrix indicating equivalent channels that are generated from channel impulse responses, and a decomposition unit (119) obtains a lower triangular matrix (L), that consists of a diagonal element that includes a high channel quality at the front of the transmitting block and a low channel quality at the rear, so as to indicate the channel quality of the transmission block, and an element indicating interference with the transmission block, and a unitary matrix (Q) by means of LQ decomposition of the equivalent channel matrix. A computation unit (120) uses the lower triangular matrix (L) and the average channel quality to compute a matrix (B) that minimizes the mean square error of all symbols between the transmission block before precoding and a block received by a wireless receiver. A preceding unit (103) performs THP of the transmission block using the matrix (B).

摘要翻译： 公开了一种无线发射机，可以防止误码率特性的恶化，而不会降低移动通信期间的数据速率，同时也利用THP进行FDE。 在装置中，等效信道矩阵计算单元（118）计算要用于传输块的FDE的权重和指示从信道脉冲响应产生的等效信道的等效信道矩阵，并且分解单元（119）获得较低的 三角矩阵（L），其包括在发送块的前面包括高信道质量的对角元素和在后面的低信道质量，以指示传输块的信道质量，以及指示 与传输块的干扰，以及通过等效信道矩阵的LQ分解的酉矩阵（Q）。 计算单元（120）使用下三角矩阵（L）和平均信道质量来计算使预编码之前的传输块和无线接收器接收的块之间的所有符号的均方误差最小化的矩阵（B）。 前一单元（103）使用矩阵（B）执行传输块的THP。

公开(公告)号：US20120108164A1

公开(公告)日：2012-05-03

申请号：US13260971

申请日：2010-02-12

申请人： Yasuaki Yuda ,  Seigo Nakao ,  Ayako Horiuchi ,  Daichi Imamura ,  Kenichi Miyoshi ,  Megumi Ichikawa ,  Hiroaki Morino

发明人： Yasuaki Yuda ,  Seigo Nakao ,  Ayako Horiuchi ,  Daichi Imamura ,  Kenichi Miyoshi ,  Megumi Ichikawa ,  Hiroaki Morino

IPC分类号： H04B17/02

CPC分类号： H04B7/15521 ,  H04L1/0061 ,  H04L1/0076 ,  H04L1/20 ,  H04L2001/0097

摘要： To prevent relaying wrong information by determining whether a radio signal is to be relayed in accordance with a function of error detection in the radio signal. A relay station apparatus according to an aspect of the invention is a relay station apparatus which relays a radio signal between a transmission station and a reception station, including: a receiver which is configured to receive the radio signal from the transmission station; and a relay determination section which is configured, in accordance with a function of error detection in the radio signal received by the receiver, to determine whether the signal is to be relayed or not, based on a first channel quality indicating a channel quality from the transmission station to the relay station apparatus.

摘要翻译： 通过根据无线电信号中的错误检测功能确定是否要中继无线电信号来防止中继错误信息。 根据本发明一个方面的中继站装置是一种在发送站和接收站之间中继无线电信号的中继站装置，包括：接收机，被配置为从发送站接收无线电信号; 以及中继判定部，其基于从所述接收机接收到的无线信号中的错误检测的功能，基于表示来自所述接收机的信道质量的第一信道质量， 发送站到中继站装置。