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公开(公告)号：US09491742B2
公开(公告)日：2016-11-08
申请号：US14969943
申请日：2015-12-15
Inventor： Masayuki Hoshino , Akihiko Nishio , Seigo Nakao , Daichi Imamura
IPC: H04W72/12 , H04L5/00 , H04L25/02 , H04W72/04 , H04L1/00 , H04L1/06 , H04L1/20 , H04B7/06 , H04B7/04 , 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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公开(公告)号：US20160183306A1
公开(公告)日：2016-06-23
申请号：US15056926
申请日：2016-02-29
Inventor： Daichi Imamura , Sadaki Futagi , Masaru Fukuoka , Takashi Iwai , Atsushi Matsumoto
CPC classification number: H04W74/0833 , H04W72/042 , H04W74/00 , H04W74/006 , H04W74/008 , H04W74/0866
Abstract: Disclosed are a radio transmission device and a radio transmission method which reduce the RACH conflict ratio and improve the RACH detection characteristic. When the device and the method are used: as the number of signature numbers allocated for UE by the network side increases, the condition for allocating a signature by UE itself is mitigated and an expectation value which is a statistic average value of the RA quantity using the signature allocated by UE for itself is decreased; and as the number of signature numbers allocated for UE by the network side decreases, the condition for allocating a signature by UE itself is limited and an expectation value of the RA quantity using the signature allocated by UE for itself is increased.
Abstract translation: 公开了减少RACH冲突比并提高RACH检测特性的无线传输装置和无线传输方法。 当使用设备和方法时：随着网络侧为UE分配的签名号码的数量增加，UE本身分配签名的条件得到缓解，作为RA数量的统计平均值的期望值使用 UE自身分配的签名减少; 并且由于由网络侧为UE分配的签名号码的数量减少，所以UE本身分配签名的条件受到限制，并且使用UE自己分配的签名的RA数量的期望值增加。
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公开(公告)号：US20160099746A1
公开(公告)日：2016-04-07
申请号：US14970255
申请日：2015-12-15
Inventor： Daichi Imamura , Takashi Iwai , Kazunori Inogai , Sadaki Futagi , Atsushi Matsumoto
IPC: H04B1/7083 , H04W72/04
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.
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公开(公告)号：US20160065347A1
公开(公告)日：2016-03-03
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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公开(公告)号：US20160057739A1
公开(公告)日：2016-02-25
申请号：US14930285
申请日：2015-11-02
Inventor： Seigo Nakao , Akihiko Nishio , Daichi Imamura
CPC classification number: H04W72/042 , H04L1/1822 , H04L5/001 , H04L5/0023 , H04L5/0055 , H04L5/0094 , H04W4/06 , H04W72/0413 , H04W72/0453
Abstract: Disclosed is a base station in which the frequency usage efficiency can be improved when the communication bandwidths are asymmetric in the uplink line and the downlink line. A base station can communicate by using a plurality of downlink unit bands and a smaller number of uplink unit bands. A control unit allocates uplink resource allocation information and downlink resource allocation information to a PDCCH which is arranged in each of the plurality of downlink unit bands, and allocates a response signal to the uplink line data to a PHICH which is arranged in the same number of downlink unit bands from the plurality of downlink unit bands as there are uplink unit bands. A transmit RF unit transmits the resource allocation information or the response signal.
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Patent Agency Ranking
96.发明授权Integrated circuit for setting subbands in multicarrier communication for radio communication base station apparatus 有权用于无线通信基站装置的多载波通信中的子带的集成电路公开(公告)号：US09265041B2
公开(公告)日：2016-02-16
申请号：US14687827
申请日：2015-04-15
Inventor： Akihiko Nishio , Daichi Imamura , Masaru Fukuoka
CPC classification number: H04W72/044 , H04B7/0452 , H04B7/12 , H04J4/00 , H04L5/0037 , H04L27/2627 , H04W52/42 , H04W72/04 , H04W72/1205 , H04W72/1263
Abstract: A wireless communication base station apparatus wherein when a frequency scheduling transmission and a frequency diversity transmission are performed in a multicarrier communication at the same time, the adaptive control of a channel for performing the frequency scheduling transmission can be prevented from being complicated. In this apparatus, a modulating part (12) modulates an encoded Dch data to generate Dch data symbols. A modulating part (22) modulates an encoded Lch data to generate Lch data symbols. An assigning part (103) assigns the Dch and Lch data symbols to subcarriers constituting OFDM symbols and outputs them to a multiplexing part (104). At this moment, the assigning part (103) assigns a set of Dch and Lch data symbols to each subcarrier for a respective subband.
Abstract translation: 一种无线通信基站装置，其中，当在多载波通信中同时进行频率调度发送和频率分集发送时，可以防止用于进行频率调度发送的信道的自适应控制变得复杂。 在该装置中，调制部分（12）调制编码的Dch数据以产生Dch数据符号。 调制部分（22）调制编码的Lch数据以产生Lch数据符号。 分配部分（103）将Dch和Lch数据符号分配给构成OFDM符号的子载波，并将它们输出到复用部分（104）。 此时，分配部分（103）为各个子带向每个子载波分配一组Dch和Lch数据符号。
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公开(公告)号：US09246657B2
公开(公告)日：2016-01-26
申请号：US14595136
申请日：2015-01-12
Inventor： Akihiko Nishio , Seigo Nakao , Daichi Imamura , Masayuki Hoshino
CPC classification number: H04W72/042 , H04L1/0025 , H04L1/0027 , H04L1/0038 , H04L1/0046 , H04L1/0072 , H04L1/1854 , H04L1/1861 , H04L5/001 , H04L5/0042 , H04L5/0044 , H04L5/0053 , H04L5/0055 , H04L5/0092 , H04L5/0094 , H04W28/04 , H04W72/0406 , H04W72/0413 , H04W72/0433 , H04W72/0453 , H04W74/085
Abstract: Disclosed is wireless communication base station equipment in which CCE allocation can be flexibly performed without collision of ACK/NACK signals between a plurality of unit bands, even when wideband transmission is performed exclusively on a downlink circuit. In this equipment, an allocation unit (105) sets up mutually different search spaces for each of a plurality of downlink unit bands, with respect to wireless communication terminal devices that communicate using a plurality of downlink unit bands, and allocates resource allocation information of downlink circuit data destined for the wireless communication terminal devices to CCEs in mutually different search spaces for each of the plurality of downlink unit bands, and an ACK/NACK reception unit (119); extracts a response signal in respect of the downlink circuit data from the uplink control channel associated with the CCE to which the resource allocation information of this downlink circuit data was allocated.
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98.发明申请公开(公告)号：US20160014788A1
公开(公告)日：2016-01-14
申请号：US14858333
申请日：2015-09-18
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.
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99.发明申请TERMINAL STATION APPARATUS, BASE STATION APPARATUS, TRANSMISSION METHOD AND CONTROL METHOD 有权终端站装置，基站装置，传输方法和控制方法公开(公告)号：US20150381257A1
公开(公告)日：2015-12-31
申请号：US14848149
申请日：2015-09-08
Inventor： Yoshihiko Ogawa , Akihiko Nishio , Takashi Iwai , Seigo Nakao , Daichi Imamura , Atsushi Sumasu
CPC classification number: H04J11/003 , H04B7/0452 , H04B7/0689 , H04J13/0048 , H04J13/18 , H04L5/005 , H04W72/042 , H04W72/1226 , H04W88/02 , H04W88/08
Abstract: A terminal apparatus is disclosed wherein even in a case of applying SU-MIMO and MU-MIMO at the same time, the inter-sequence interference in a plurality of pilot signals used by the same terminal can be suppressed to a low value, while the inter-sequence interference in pilot signal between terminals can be reduced. In this terminal apparatus: a pilot information deciding unit decides, based on allocation control information, Walsh sequences of the respective ones of first and second stream groups at least one of which includes a plurality of streams; and a pilot signal generating unit forms a transport signal by using the decided Walsh sequences to spread the streams included in the first and second stream groups. During this, Walsh sequences orthogonal to each other are established in the first and second stream groups, and users are allocated on a stream group-by-stream group basis.
Abstract translation: 公开了一种终端装置，其中即使在同时应用SU-MIMO和MU-MIMO的情况下，同一终端使用的多个导频信号中的序列间干扰也可以被抑制到较低的值，而 终端之间的导频信号中的序列间干扰可以减少。 在该终端装置中：导频信息决定部基于分配控制信息，决定第一和第二流组中的至少一个流中的至少一个包括多个流的沃尔什序列; 并且导频信号生成单元通过使用所确定的沃尔什序列形成传输信号，以扩展包括在第一和第二流组中的流。 在此期间，在第一和第二流组中建立彼此正交的沃尔什序列，并且以流逐群分组为基础分配用户。
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公开(公告)号：US20150341154A1
公开(公告)日：2015-11-26
申请号：US14818071
申请日：2015-08-04
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 “ej(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).
Abstract translation: 提供一种能够使应答（ACK）接收质量和否定确认（NACK）接收质量彼此相等的无线通信装置。 该装置包括：加扰单元（214），其通过扰码“1”或“ej（＆pgr / / 2）”对调制后的响应信号进行乘法，以便在循环移位上旋转每个响应信号的星座图 轴; 扩展单元（215），其通过使用由控制单元（209）设置的零自动相关（ZAC）序列来执行所述响应信号的初级扩展; 以及扩展单元（218），其通过使用由所述控制单元（209）设置的块式扩展码序列来执行经过所述主扩展之后的所述响应信号的二次扩展。
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