公开(公告)号：US20130294279A1

公开(公告)日：2013-11-07

申请号：US13978330

申请日：2011-12-09

申请人： Satoshi Nagata ,  Tetsushi Abe ,  Yoshihisa Kishiyama

发明人： Satoshi Nagata ,  Tetsushi Abe ,  Yoshihisa Kishiyama

IPC分类号： H04B7/04

CPC分类号： H04B7/0456 ,  H04B7/024 ,  H04L25/0226 ,  H04L25/03904 ,  H04L25/03955

摘要： Provided are a mobile terminal apparatus, a radio base station apparatus and a radio communication method capable of making the most of the effects of the MIMO technique and the CoMP technique, when employing both of the techniques. According to the radio communication method of the present invention, a mobile terminal apparatus estimates downlink channel states using respective reference signals included in downlink signals from plural cells; selects PMIs using a codebook based on the channel states; estimates a phase difference between the cells based on the selected PMIs or the channel states; and transmits information of the phase difference and the selected PMIs to radio base station apparatuses of the respective cells. A radio base station apparatus receives an uplink signal including a PMI and the information of the phase difference between the cells; multiplies a transmission signal by a precoding weight corresponding to the PMI; adjusts the phase difference between the cells with use of the information of the phase difference between the cells; and transmits the transmission signal to a radio base station apparatus of another cell by coordinated multi-point transmission.

摘要翻译： 提供了当采用这两种技术时能够充分发挥MIMO技术和CoMP技术的效果的移动终端装置，无线电基站装置和无线电通信方法。 根据本发明的无线通信方法，移动终端装置使用来自多个小区的下行链路信号中包含的各个参考信号来估计下行链路信道状态; 基于信道状态选择使用码本的PMI; 基于所选择的PMI或信道状态来估计小区之间的相位差; 并将相位差信息和所选择的PMI发送到各小区的无线基站装置。 无线基站装置接收包括PMI的上行链路信号和小区之间的相位差的信息; 将发送信号乘以对应于PMI的预编码权重; 使用细胞之间的相位差的信息来调整细胞之间的相位差; 并通过协调的多点发送将发送信号发送到另一小区的无线基站装置。

公开(公告)号：US08526555B2

公开(公告)日：2013-09-03

申请号：US13058550

申请日：2009-08-07

申请人： Satoshi Nagata ,  Yoshihisa Kishiyama ,  Motohiro Tanno

发明人： Satoshi Nagata ,  Yoshihisa Kishiyama ,  Motohiro Tanno

IPC分类号： H04L7/00

CPC分类号： H04J11/0076 ,  H04W48/16

摘要： A user apparatus for performing cell search includes: a timing information detection unit configured to detect timing information of a synchronization signal transmitted from a connected base station; a secondary synchronization channel correlation detection unit configured to detect a correlation of a secondary synchronization channel included in a synchronization signal transmitted by other base station other than the connected base station by using the timing information detected by the timing information detection unit; and a secondary synchronization channel detection unit configured to detect the secondary synchronization channel based on a result of the correlation detection by the secondary synchronization channel correlation detection unit.

摘要翻译： 用于执行小区搜索的用户装置包括：定时信息检测单元，被配置为检测从连接的基站发送的同步信号的定时信息; 次同步信道相关检测单元，被配置为通过使用由定时信息检测单元检测的定时信息来检测包括在由连接的基站以外的其他基站发送的同步信号中的辅同步信道的相关性; 以及次同步信道检测单元，被配置为基于由次同步信道相关检测单元进行的相关检测的结果来检测辅同步信道。

公开(公告)号：US20110188558A1

公开(公告)日：2011-08-04

申请号：US13058550

申请日：2009-08-07

申请人： Satoshi Nagata ,  Yoshihisa Kishiyama ,  Motohiro Tanno

发明人： Satoshi Nagata ,  Yoshihisa Kishiyama ,  Motohiro Tanno

IPC分类号： H04B17/00

CPC分类号： H04J11/0076 ,  H04W48/16

摘要： A user apparatus for performing cell search includes: a timing information detection unit configured to detect timing information of a synchronization signal transmitted from a connected base station; a secondary synchronization channel correlation detection unit configured to detect a correlation of a secondary synchronization channel included in a synchronization signal transmitted by other base station other than the connected base station by using the timing information detected by the timing information detection unit; and a secondary synchronization channel detection unit configured to detect the secondary synchronization channel based on a result of the correlation detection by the secondary synchronization channel correlation detection unit.

摘要翻译： 用于执行小区搜索的用户装置包括：定时信息检测单元，被配置为检测从连接的基站发送的同步信号的定时信息; 次同步信道相关检测单元，被配置为通过使用由定时信息检测单元检测的定时信息来检测包括在由连接的基站以外的其他基站发送的同步信号中的辅同步信道的相关性; 以及次同步信道检测单元，被配置为基于由次同步信道相关检测单元进行的相关检测的结果来检测辅同步信道。

公开(公告)号：US09716578B2

公开(公告)日：2017-07-25

申请号：US14130710

申请日：2012-07-13

申请人： Kazuaki Takeda ,  Tetsushi Abe ,  Yoshihisa Kishiyama ,  Satoshi Nagata ,  Daisuke Nishikawa

发明人： Kazuaki Takeda ,  Tetsushi Abe ,  Yoshihisa Kishiyama ,  Satoshi Nagata ,  Daisuke Nishikawa

IPC分类号： H04W4/00 ,  H04L5/00 ,  H04B7/0452 ,  H04W72/04

CPC分类号： H04L5/0053 ,  H04B7/0452 ,  H04L5/0007 ,  H04W72/042

摘要： The present invention is designed to minimize the increase of user terminal power consumption even when downlink control channels are extended. A radio base station apparatus having: an allocation section that allocates downlink control information in a first control region from a top of a radio frame to a predetermined OFDM symbol and in a second control region that is frequency-divided with a data region in a region that is time-divided with the first control region, and also allocates decoding control information that indicates a user terminal to perform a decoding process for the second control region, in the first control region; and a transmission section that transmits the downlink control information and the decoding control information; and a user terminal having: a receiving section that receives the downlink control information and the decoding control information from the radio base station apparatus; and a decoding section that controls the decoding process for the second control region based on the decoding control information received, are provided.

公开(公告)号：US09467989B2

公开(公告)日：2016-10-11

申请号：US14114442

申请日：2012-02-09

申请人： Yoshihisa Kishiyama ,  Kazuaki Takeda ,  Satoshi Nagata ,  Tetsushi Abe

发明人： Yoshihisa Kishiyama ,  Kazuaki Takeda ,  Satoshi Nagata ,  Tetsushi Abe

IPC分类号： H04W72/04 ,  H04L5/00

CPC分类号： H04W72/042 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0041 ,  H04L5/0053

摘要： The present invention is designed to provide a base station apparatus, a mobile terminal apparatus, a communication system and a communication method that cope with the shortage of downlink control channel capacity. For a mobile terminal apparatus that receives downlink signals using a resource region for downlink control signals and a resource region for downlink data signals, a base station apparatus is configured to set a plurality of virtual resources for downlink control signals in a plurality of physical resources that are arranged in a frequency direction in the resource region for downlink data signals, and allocate the downlink control signals, in a distributed manner, between virtual resources of a relatively low frequency band side and virtual resources of a relatively high frequency band side in a plurality of virtual resources.

摘要翻译： 本发明旨在提供一种应对下行链路控制信道容量不足的基站装置，移动终端装置，通信系统和通信方法。 对于使用用于下行链路控制信号的资源区域和下行链路数据信号的资源区域来接收下行链路信号的移动终端装置，基站装置被配置为在多个物理资源中设置用于下行链路控制信号的多个虚拟资源， 在下行链路数据信号的资源区域中以频率方向配置，并且以分散的方式在多个频带侧的虚拟资源和相对高频带侧的虚拟资源之间分配下行链路控制信号 的虚拟资源。

公开(公告)号：US09313014B2

公开(公告)日：2016-04-12

申请号：US14234438

申请日：2012-07-26

申请人： Satoshi Nagata ,  Tetsushi Abe ,  Yoshihisa Kishiyama ,  Kazuaki Takeda

发明人： Satoshi Nagata ,  Tetsushi Abe ,  Yoshihisa Kishiyama ,  Kazuaki Takeda

IPC分类号： H04W72/00 ,  H04L5/00 ,  H04J11/00 ,  H04B7/02

CPC分类号： H04L5/0091 ,  H04B7/024 ,  H04J11/0053 ,  H04L5/001 ,  H04L5/0035 ,  H04L5/0053

摘要： The present invention is designed to apply CoMP transmission/reception flexibly in a system band that is formed with a plurality of fundamental frequency blocks, improve received quality in user terminals, and also widen the system band. A first radio base station apparatus (20A) that transmits downlink data to a user terminal (10) using a plurality of cells that respectively correspond to fundamental frequency blocks of varying frequency bands, and a second radio base station apparatus (20B) that transmits downlink data to the user terminal (10) using a cell that corresponds to fundamental frequency block of the same frequency band as one of a plurality of cells are provided, and the first radio base station apparatus (20A) and the second radio base station apparatus (20B) perform coordinated multiple-point transmission for the user terminal 10 between cells corresponding to the same fundamental frequency block, and also report information about the combination of cells that perform the coordinated multiple-point transmission to the user terminal (10).

摘要翻译： 本发明被设计为在形成有多个基本频率块的系统频带中灵活地应用CoMP发送/接收，提高用户终端的接收质量，并且还扩大系统频带。 第一无线基站装置（20A），其使用分别对应于变化频带的基本频率块的多个小区向下一个用户终端（10）发送下行链路数据;以及第二无线基站装置（20B），其向下行链路 提供使用与多个小区中的一个相同频带的基本频率块对应的小区向用户终端（10）发送的数据，第一无线基站装置（20A）和第二无线基站装置 20B）在对应于同一基本频率块的小区之间对用户终端10执行协调的多点传输，并且还向用户终端（10）报告关于执行协调多点传输的小区的组合的信息。

公开(公告)号：US08971436B2

公开(公告)日：2015-03-03

申请号：US13703913

申请日：2011-06-17

申请人： Satoshi Nagata ,  Yoshihisa Kishiyama ,  Xiang Yun ,  Jianchi Zhu ,  Xiaoming She ,  Lan Chen

发明人： Satoshi Nagata ,  Yoshihisa Kishiyama ,  Xiang Yun ,  Jianchi Zhu ,  Xiaoming She ,  Lan Chen

IPC分类号： H04B7/02 ,  H04B7/04 ,  H04B7/06 ,  H04L1/00 ,  H04L5/00

CPC分类号： H04B7/0478 ,  H04B7/024 ,  H04B7/0456 ,  H04B7/0482 ,  H04B7/0632 ,  H04L1/0015 ,  H04L1/0026 ,  H04L1/0031 ,  H04L5/0035

摘要： The present invention provides a user equipment and channel state information feedback method. The channel state information feedback method used in a coordinated multi-point system includes acquiring small-scale channel state information H′=[H′1, H′2, . . . , H′K] between a user equipment and all base stations joining coordination, acquiring large-scale channel state information li(i=1, . . . , K) between the user equipment and each of the base stations joining coordination, acquiring a CQI (CQIi=li▪|H′|, i=1, . . . , K) between the user equipment and each of the base stations joining coordination based on the small-scale channel state information and the large-scale channel state information, updating the source codebook C using the acquired CQI to acquire an updated codebook{tilde over (C)},performing quantization processing using the updated codebook to acquire CDI, and transmitting the CDI and the CQI associated with each of the base stations joining coordination to a base station as feedback to provide for channel reconstruction in the base station. According to the invention, the rate of utilization of feedback information is improved.

摘要翻译： 本发明提供一种用户设备和信道状态信息反馈方法。 在协调多点系统中使用的信道状态信息反馈方法包括获取小规模信道状态信息H'= [H'1，H'2，...] 。 。 ，H'K]在用户设备和所有基站之间加入协调，获取用户设备和每个基站之间加入协调的大规模信道状态信息li（i = 1，...，K），获取 基于小规模信道状态信息和大规模信道状态信息，用户设备与加入协调的每个基站之间的CQI（CQIi =li▪| H'|，i = 1，...，K） 使用获取的CQI更新源码本C以获取更新的码本（（C）），使用更新的码本执行量化处理以获取CDI，以及发送与连接协调的每个基站相关联的CDI和CQI 作为反馈提供给基站中的信道重建的基站。 根据本发明，提高了反馈信息的利用率。

公开(公告)号：US08705462B2

公开(公告)日：2014-04-22

申请号：US12681039

申请日：2008-09-29

申请人： Yoshihisa Kishiyama ,  Satoshi Nagata

发明人： Yoshihisa Kishiyama ,  Satoshi Nagata

IPC分类号： H04W4/00

CPC分类号： H04L1/0028 ,  H04B1/713 ,  H04L1/0026 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0053 ,  H04L5/0091 ,  H04L25/03343 ,  H04L2025/03414 ,  H04L2025/03808

摘要： A user equipment terminal for transmitting control information to a base station according to a single carrier scheme includes a wideband control information generating unit configured to generate wideband control information for a whole system band or a portion thereof; a frequency-selective control information generating unit configured to generate frequency-selective control information; and a control unit configured to control the wideband control information to be transmitted on a control channel or a data channel and control the frequency-selective control information to be transmitted on the data channel.

摘要翻译： 根据单载波方式向基站发送控制信息的用户设备终端包括宽带控制信息生成单元，被配置为生成整个系统频带或其一部分的宽带控制信息; 频率选择控制信息生成单元，被配置为产生频率选择控制信息; 以及控制单元，被配置为控制要在控制信道或数据信道上发送的宽带控制信息，并控制要在数据信道上发送的频率选择控制信息。

公开(公告)号：US20130114751A1

公开(公告)日：2013-05-09

申请号：US13703913

申请日：2011-06-17

申请人： Satoshi Nagata ,  Yoshihisa Kishiyama ,  Xiang Yun ,  Jianchi Zhu ,  Xiaoming She ,  Lan Chen

发明人： Satoshi Nagata ,  Yoshihisa Kishiyama ,  Xiang Yun ,  Jianchi Zhu ,  Xiaoming She ,  Lan Chen

IPC分类号： H04B7/04

CPC分类号： H04B7/0478 ,  H04B7/024 ,  H04B7/0456 ,  H04B7/0482 ,  H04B7/0632 ,  H04L1/0015 ,  H04L1/0026 ,  H04L1/0031 ,  H04L5/0035

摘要： The present invention provides a user equipment and channel state information feedback method. The channel state information feedback method used in a coordinated multi-point system includes acquiring small-scale channel state information H′=[H′1, H′2, . . . , H′K] between a user equipment and all base stations joining coordination, acquiring large-scale channel state information li(i=1, . . . , K) between the user equipment and each of the base stations joining coordination, acquiring a CQI (CQIi=li▪|H′|, i=1, . . . , K) between the user equipment and each of the base stations joining coordination based on the small-scale channel state information and the large-scale channel state information, updating the source codebook C using the acquired CQI to acquire an updated codebook {tilde over (C)}, performing quantization processing using the updated codebook to acquire CDI, and transmitting the CDI and the CQI associated with each of the base stations joining coordination to a base station as feedback to provide for channel reconstruction in the base station. According to the invention, the rate of utilization of feedback information is improved.

摘要翻译： 本发明提供一种用户设备和信道状态信息反馈方法。 在协调多点系统中使用的信道状态信息反馈方法包括获取小规模信道状态信息H'= [H'1，H'2，...] 。 。 ，H'K]在用户设备和所有基站之间加入协调，获取用户设备和每个基站之间加入协调的大规模信道状态信息li（i = 1，...，K），获取 基于小规模信道状态信息和大规模信道状态信息，用户设备和加入协调的每个基站之间的CQI（CQIi = li * | H'|，i = 1，...，K） 使用获取的CQI更新源码本C以获取更新的码本（（C）），使用更新的码本执行量化处理以获取CDI，以及发送与连接协调的每个基站相关联的CDI和CQI 作为反馈提供给基站中的信道重建的基站。 根据本发明，提高了反馈信息的利用率。

公开(公告)号：US08290105B2

公开(公告)日：2012-10-16

申请号：US10986003

申请日：2004-11-12

申请人： Satoshi Nagata ,  Noriyuki Maeda ,  Hiroyuki Atarashi ,  Mamoru Sawahashi

发明人： Satoshi Nagata ,  Noriyuki Maeda ,  Hiroyuki Atarashi ,  Mamoru Sawahashi

IPC分类号： H04L7/00 ,  H04L7/02

CPC分类号： H04L5/026 ,  H04L27/2602 ,  H04L27/2662 ,  H04L27/2675 ,  H04L27/2678 ,  H04L27/2695

摘要： A signal reception device is disclosed that is capable of detecting symbol synchronization timing with high precision in accordance with a condition of a propagation path even in an environment involving multi-path interference. The signal reception device adopts an OFCDM transmission scheme or a multi-carrier transmission scheme. The signal reception device includes a received signal information calculation unit to calculate received signal information representing a signal reception condition of a received signal; an output combination unit to combine correlation values in a predetermined section obtained by correlation detection based on the received signal information; and a symbol timing detection unit to detect a symbol synchronization timing based on the combined value.

摘要翻译： 公开了一种信号接收装置，其能够即使在涉及多路径干扰的环境中也能够根据传播路径的条件高精度地检测符号同步定时。 信号接收装置采用OFCDM传输方式或多载波传输方案。 信号接收装置包括接收信号信息计算单元，用于计算表示接收信号的信号接收条件的接收信号信息; 输出组合单元，其基于所接收的信号信息来组合通过相关检测获得的预定部分中的相关值; 以及符号定时检测单元，用于基于所述组合值检测符号同步定时。