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公开(公告)号：US09432972B2
公开(公告)日：2016-08-30
申请号：US13918654
申请日：2013-06-14
Inventor： Daichi Imamura , Hidetoshi Suzuki , Akihiko Nishio , Atsushi Matsumoto
CPC classification number: H04W72/0406 , H04L1/0003 , H04L1/0007 , H04L1/0009 , H04L1/0025 , H04L1/0029 , H04L1/1671
Abstract: Provided are a radio transmission device and a radio transmission method capable of improving downlink and uplink throughput even when performing dynamic symbol allocation. In the device and the method, BS and MS share a table correlating a basic TF as a combination of parameters such as TB size used for transmitting only user data, an allocation RB quantity, a modulation method, and an encoding ratio, with a derived TF having user data of different TB size by combining L1/L2 control information. Even when multiplexing L1/L2 control information, Index corresponding to the basic TF is reported from BS to MS.
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公开(公告)号：US09391757B2
公开(公告)日：2016-07-12
申请号：US14727481
申请日：2015-06-01
Inventor： Yoshihiko Ogawa , Daichi Imamura , Sadaki Futagi , Tomofumi Takata
CPC classification number: H04J11/005 , H04B1/38 , H04J13/0062 , H04J13/22 , H04L5/0048 , H04L5/0073 , H04L27/2602 , H04L43/16 , H04W16/10 , H04W72/042
Abstract: Provided is a sequence allocation method capable of reducing inter-cell interference of a reference signal when a ZC sequence is used as the reference signal in a mobile communication system. In the sequence allocation method, R×M sequences specified by a ZC sequence number r (r=1 to R) and a cyclic shift sequence number m (m=1 to M) are divided into a plurality of sequence groups X (X=1 to R) in accordance with the transmission band width of the reference signal, so that the ZC sequence is allocated to each cell in each sequence group unit. When it is assumed that R=9 and M=6, the number of sequences is 54. Each of the sequence groups is formed by two sequences. Accordingly, the number of sequence groups is 27. The 27 types of sequence groups are allocated to each cell.
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63.发明申请APPARATUS AND METHOD FOR GENERATING AND TRANSMITTING REFERENCE SIGNAL IN RADIO COMMUNICATION 审中-公开用于在无线电通信中产生和发送参考信号的装置和方法公开(公告)号：US20160183246A1
公开(公告)日：2016-06-23
申请号：US15057969
申请日：2016-03-01
Inventor： Tomofumi Takata , Daichi Imamura , Seigo Nakao , Sadaki Futagi , Takashi Iwai , Yoshihiko Ogawa
CPC classification number: H04L5/0048 , H04B7/0632 , H04J11/00 , H04J13/0003 , H04J13/0055 , H04J13/0059 , H04J13/0074 , H04J13/10 , H04L5/0007 , H04L5/0057 , H04L25/0204 , H04L25/0208 , H04L25/0228 , H04L27/2695 , H04W72/0413 , H04W72/0446 , H04W72/082 , H04W88/02
Abstract: It is possible to provide a radio communication terminal device and a radio transmission method which can improve reception performance of a CQI and a reference signal. A phase table storage unit stores a phase table which correlates the amount of cyclic shift to complex coefficients {w1, w2} to be multiplied on the reference signal. A complex coefficient multiplication unit reads out a complex coefficient corresponding to the amount of cyclic shift indicated by resource allocation information, from the phase table storage unit and multiplies the read-out complex coefficient on the reference signal so as to change the phase relationship between the reference signals in a slot.
Abstract translation: 可以提供可以提高CQI的接收性能和参考信号的无线通信终端装置和无线发送方法。 相位表存储单元存储将循环移位量与要参考信号相乘的复系数{w1，w2}相关联的相位表。 复系数乘法单元从相位表存储单元读出与由资源分配信息指示的循环移位量相对应的复数系数，并将读出的复数系数与参考信号相乘，以便改变相关关系 参考信号在一个插槽。
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公开(公告)号：US09363031B2
公开(公告)日：2016-06-07
申请号：US14692391
申请日：2015-04-21
Inventor： Takashi Iwai , Daichi Imamura , Akihiko Nishio , Yoshihiko Ogawa , Masaru Fukuoka
CPC classification number: H04J11/0053 , H04B1/713 , H04B7/024 , H04B17/354 , H04J13/0062 , H04J13/0074 , H04L1/0026 , H04L1/20 , H04L5/0007 , H04L5/0035 , H04L5/0048 , H04L5/0051 , H04L5/0073 , H04L5/0091
Abstract: Provided are a wireless communication apparatus and a reference signal generating method, wherein inter-cell interference is reduced inside and outside a CoMP set. A CoMP mode setting unit (101) sets whether the terminal (100) thereof is a CoMP terminal or a Non-CoMP terminal. When the terminal (100) is set as a Non-CoMP terminal, the hopping pattern calculating unit (104) calculates a ZC sequence number to be used as the transmission timing, from among all the ZC sequence numbers that can be used within the system. When the terminal (100) is set as a CoMP terminal, the hopping pattern calculating unit (104) calculates a ZC sequence number to be used as the transmission timing, by hopping the ZC sequence numbers to be used within the CoMP set. A ZC sequence generating unit (105) generates a ZC sequence to be used as an SRS, using the calculated ZC sequence number.
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公开(公告)号：US09344253B2
公开(公告)日：2016-05-17
申请号：US14935211
申请日：2015-11-06
Inventor： Seigo Nakao , Daichi Imamura
CPC classification number: H04L1/1893 , H04J13/0003 , H04J13/0059 , H04J13/0074 , H04J13/22 , H04L1/0061 , H04L1/1825 , H04L1/1854 , H04L1/1861 , H04L1/1896 , H04L5/0007 , H04L5/0053 , H04L5/0055 , H04L5/006 , H04L5/0091 , H04L25/03866 , H04L27/2602 , H04L27/2613 , H04L27/2626 , H04L2001/125 , H04W72/0406 , H04W72/0413 , H04W72/042
Abstract: Provided is a radio communication device which can make Acknowledgement (ACK) reception quality and Negative Acknowledgement (NACK) reception quality to be equal to each other. The device includes: a scrambling unit (214) which multiplies a response signal after modulated, by a scrambling code “1” or “e−j(π/2)” so as to rotate a constellation for each of response signals on a cyclic shift axis; a spread unit (215) which performs a primary spread of the response signal by using a Zero Auto Correlation (ZAC) sequence set by a control unit (209); and a spread unit (218) which performs a secondary spread of the response signal after subjected to the primary spread, by using a block-wise spread code sequence set by the control unit (209).
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Patent Agency Ranking
66.发明申请BASE STATION APPARATUS, COMMUNICATION METHOD, TERMINAL APPARATUS AND INTEGRATED CIRCUIT 有权基站装置，通信方法，终端装置和集成电路公开(公告)号：US20160128035A1
公开(公告)日：2016-05-05
申请号：US14966278
申请日：2015-12-11
Inventor： Seigo Nakao , Akihiko Nishio , Daichi Imamura , Takahisa Aoyama
CPC classification number: H04W72/042 , H04L1/004 , H04L5/0007 , H04L5/001 , H04L5/003 , H04L5/0046 , H04L5/0053 , H04L5/0094 , H04W28/06 , H04W72/0453
Abstract: Provided are a radio terminal device, a radio base station device, and a channel signal forming method which can prevent quality degradation of the downlink resource allocation information by reducing the frequency of the zero information addition process to the downlink resource allocation information when executing communication using an uplink unit band and multiple downlink unit bands correlated to the uplink unit band. A base station includes: a PDCCH generation unit which includes the uplink allocation information relating to the uplink unit band only in some of the channel signals formed for each of the downlink unit bands; and a padding unit which adds zero information to the downlink allocation information only in the selected some channel signals having the bandwidth of the corresponding downlink unit band smaller than that of the uplink unit band until the downlink allocation information size becomes equal to the uplink allocation information size.
Abstract translation: 提供一种无线电终端设备，无线电基站设备和信道信号形成方法，其可以通过在执行通信时将下行链路资源分配信息的零信息添加处理的频率降低来防止下行链路资源分配信息的质量劣化 上行链路单位频带和与上行单位频带相关的多个下行单位频带。 基站包括：PDCCH生成单元，其仅在针对每个下行链路单位频带形成的一些信道信号中包括与上行链路单位频带有关的上行链路分配信息; 以及填充单元，其仅在所选择的一些信道信号中将下行链路分配信息添加到下行链路单位频带的带宽，直到下行链路分配信息大小变得等于上行链路分配信息为止 尺寸。
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公开(公告)号：US20160065348A1
公开(公告)日：2016-03-03
申请号：US14935217
申请日：2015-11-06
Inventor： Seigo Nakao , Daichi Imamura
CPC classification number: H04L1/1893 , H04J13/0003 , H04J13/0059 , H04J13/0074 , H04J13/22 , H04L1/0061 , H04L1/1825 , H04L1/1854 , H04L1/1861 , H04L1/1896 , H04L5/0007 , H04L5/0053 , H04L5/0055 , H04L5/006 , H04L5/0091 , H04L25/03866 , H04L27/2602 , H04L27/2613 , H04L27/2626 , H04L2001/125 , H04W72/0406 , H04W72/0413 , H04W72/042
Abstract: Provided is a radio communication device which can make Acknowledgement (ACK) reception quality and Negative Acknowledgement (NACK) reception quality to be equal to each other. The device includes: a scrambling unit (214) which multiplies a response signal after modulated, by a scrambling code “1” or “e−j(π/2)” so as to rotate a constellation for each of response signals on a cyclic shift axis; a spread unit (215) which performs a primary spread of the response signal by using a Zero Auto Correlation (ZAC) sequence set by a control unit (209); and a spread unit (218) which performs a secondary spread of the response signal after subjected to the primary spread, by using a block-wise spread code sequence set by the control unit (209).
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公开(公告)号：US09265042B2
公开(公告)日：2016-02-16
申请号：US14698372
申请日：2015-04-28
Inventor： Masayuki Hoshino , Akihiko Nishio , Seigo Nakao , Daichi Imamura
IPC: H04W72/04 , H04W72/12 , H04L5/00 , H04L25/02 , H04L1/00 , H04L1/06 , H04L1/20 , H04B7/06 , H04L1/18
CPC classification number: H04W72/044 , H04B7/0486 , H04B7/0626 , H04B7/0632 , H04L1/0026 , H04L1/06 , H04L1/1829 , H04L1/20 , H04L5/0023 , H04L5/0048 , H04L5/0051 , H04L5/0053 , H04L5/006 , H04L5/0073 , H04L5/0082 , H04L5/0094 , H04L25/0224 , H04W72/0406 , H04W72/1215
Abstract: Where first and second reference signals for a first and second communication system, respectively, are transmitted, resources that affect a reception apparatus compatible only with the first communication system can be minimized, and the throughput can be prevented from being deteriorated. As resources for a reference signal CSI-RS for LTE-A, last half symbols in a time direction of a resource unit RB/Sub-frame defined in a frequency-time domain are used, and the CSI-RS is allocated in a position up to the last two symbols or in the last symbol, or the like, of a particular RB/Sub-frame and transmitted when a reference signal 4RS for LTE is transmitted to a reception apparatus in addition to transmitting CSI-RS for LTE-A. The reception apparatus receives CSI-RS allocated in the last half symbol of RB/Sub-frame based on CSI-RS allocation information, measures channel quality by using this CSI-RS, and transmits and reports feedback information.
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69.发明授权Integrated circuit for controlling selection of random access preamble sequence 有权用于控制随机接入前导序列选择的集成电路公开(公告)号：US09246539B2
公开(公告)日：2016-01-26
申请号：US14637207
申请日：2015-03-03
Inventor： Daichi Imamura , Takashi Iwai , Kazunori Inogai , Sadaki Futagi , Atsushi Matsumoto
IPC: H04W4/00 , H04W72/04 , H04B1/707 , H04J13/00 , H04J13/22 , H04L23/02 , H04W74/08 , H04J13/10 , H04L27/26
CPC classification number: H04W74/0833 , H04B1/707 , H04B1/7083 , H04B2201/70702 , H04B2201/70713 , H04J13/0062 , H04J13/102 , H04J13/22 , H04L5/0048 , H04L23/02 , H04L27/2613 , H04W72/04 , H04W72/0446 , H04W72/0453 , H04W74/0875
Abstract: A sequence allocating method and apparatus wherein in a system where a plurality of different Zadoff-Chu sequences or GCL sequences are allocated to a single cell, the arithmetic amount and circuit scale of a correlating circuit at a receiving end can be reduced. In ST201, a counter (a) and a number (p) of current sequence allocations are initialized, and in ST202, it is determined whether the number (p) of current sequence allocations is coincident with a number (K) of allocations to one cell. In ST203, it is determined whether the number (K) of allocations to the one cell is odd or even. If K is even, in ST204-ST206, sequence numbers (r=a and r=N−a), which are not currently allocated, are combined and then allocated. If K is odd, in ST207-ST212, for sequences that cannot be paired, one of sequence numbers (r=a and r=N−a), which are not currently allocated, is allocated.
Abstract translation: 一种序列分配方法和装置，其中在将多个不同的Zadoff-Chu序列或GCL序列分配给单个小区的系统中，可以减少接收端的相关电路的算术量和电路规模。 在ST201中，初始化当前序列分配的计数器（a）和数量（p），并且在ST202中，确定当前序列分配的数量（p）是否与一个分配的数量（K）一致 细胞。 在ST203中，确定对一个单元的分配的数量（K）是奇数还是偶数。 如果K是偶数，则在ST204-ST206中，组合然后分配未被分配的序列号（r = a和r = N-a）。 如果K是奇数，则在ST207-ST212中，对于不能配对的序列，分配未分配的序列号（r = a和r = N-a）中的一个。
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公开(公告)号：US09241329B2
公开(公告)日：2016-01-19
申请号：US14531897
申请日：2014-11-03
Inventor： Shinsuke Takaoka , Daichi Imamura , Seigo Nakao
CPC classification number: H04W72/042 , H04B1/713 , H04J1/02 , H04L5/0005 , H04L5/0012 , H04L27/2605
Abstract: Disclosed are a wireless communication apparatus and frequency hopping method which minimize the change in the instantaneous power distribution characteristics of the time waveform of transmission signals when a plurality of channels are multiplexed by frequency division. At a terminal (200), a mapping unit (212) maps the PUCCH to frequency resources of a first slot, maps the PUSCH to frequency resources, among the frequency resources of the first slot, separated exactly by predetermined frequency spacing (B) from the frequency resources to which the PUCCH is mapped, and cyclically shifts the frequencies so as to map the PUCCH and PUSCH to frequency resources, within an IDFT or IFFT bandwidth, of a second slot while maintaining the predetermined frequency spacing (B), thereby allowing frequency hopping of the PUCCH and PUSCH between the first slot and the second slot.
Abstract translation: 公开了一种无线通信装置和跳频方法，其中，当通过分频复用多个信道时，使传输信号的时间波形的瞬时功率分布特性的变化最小化。 在终端（200），映射单元（212）将PUCCH映射到第一时隙的频率资源，将PUSCH映射到第一时隙的频率资源中，将其精确地与预定的频率间隔（B）分离 PUCCH映射的频率资源，并循环地移动频率，以便在维持预定的频率间隔（B）的同时在第二时隙的IDFT或IFFT带宽内将PUCCH和PUSCH映射到频率资源，从而允许 第一时隙和第二时隙之间的PUCCH和PUSCH的跳频。
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