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公开(公告)号：US20150036646A1
公开(公告)日：2015-02-05
申请号：US14520170
申请日：2014-10-21
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：US20150016566A1
公开(公告)日：2015-01-15
申请号：US14504343
申请日：2014-10-01
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).
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“e-j（＆pgr / / 2）”将经调制后的响应信号相乘，以便在每个响应信号上旋转星座 循环换档轴; 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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23.发明申请TRANSMISSION DEVICE, RECEPTION DEVICE, AND METHOD FOR CONTROLLING TRANSMISSION POWER 有权传输设备，接收设备和控制传输功率的方法公开(公告)号：US20140376487A1
公开(公告)日：2014-12-25
申请号：US14377147
申请日：2013-02-22
Inventor： Takashi Iwai , Kazuki Takeda , Akihiko Nishio , Daichi Imamura , Masayuki Hoshino
CPC classification number: H04W52/242 , H04L5/0091 , H04W52/146 , H04W52/362 , H04W52/40 , H04W52/58 , H04W72/0406
Abstract: This transmission device can notify of a control value pertaining to transmission power without causing an increase in the amount of signaling. A control unit (103) controls transmission power based on a bit sequence notified from a reception device and the association between the bit sequence and a control value pertaining to transmission power; in the association, each bit sequence is respectively associated with a first control value candidate group and a second control value candidate group; when the device is not the subject of cooperative reception, the control unit (103) calculates a transmission power using a control value candidate associated with the notified bit sequence among the first control value candidate group, and when the device is the subject of cooperative reception, the control unit (103) calculates a transmission power using a control value candidate associated with the notified bit sequence among the second control value candidate group.
Abstract translation: 该发送装置能够通知与发送功率有关的控制值而不引起信令量的增加。 控制单元（103）基于从接收装置通知的比特序列和比特序列与发送功率的控制值之间的关联来控制发送功率; 在关联中，每个比特序列分别与第一控制值候选组和第二控制值候选组相关联; 当设备不是协同接收的对象时，控制单元（103）使用与第一控制值候选组之间的通知的位序列相关联的控制值候选来计算发送功率，并且当该设备是协作接收的对象时 ，控制单元（103）使用与第二控制值候选组中的所通知的位序列相关联的控制值候选来计算发送功率。
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公开(公告)号：US09775176B2
公开(公告)日：2017-09-26
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.
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公开(公告)号：US20160365962A1
公开(公告)日：2016-12-15
申请号：US15244692
申请日：2016-08-23
Inventor： Atsushi Matsumoto , Daichi Imamura , Takashi Iwai , Yoshihiko Ogawa , Tomofumi Takata , Katsuhiko Hiramatsu
CPC classification number: H04L5/0057 , H04J11/0023 , H04L5/001 , H04L5/0012 , H04L5/0048 , H04L5/005 , H04L5/0051 , H04L5/0062 , H04L27/2657 , H04L27/2662 , H04W72/042 , H04W72/0453 , H04W72/085 , H04W72/1268 , H04W84/042
Abstract: Provided is a radio communication device which can prevent interference between SRS and PUCCH when the PUCCH transmission bandwidth fluctuates and suppress degradation of CQI estimation accuracy by the band where no SRS is transmitted. The device includes: an SRS code generation unit (201) which generates an SRS (Sounding Reference Signal) for measuring uplink line data channel quality; an SRS arrangement unit (202) which frequency-multiplexes the SRS on the SR transmission band and arranges it; and an SRS arrangement control unit (208) which controls SRS frequency multiplex so as to be uniform in frequency without modifying the bandwidth of one SRS multiplex unit in accordance with the fluctuation of the reference signal transmission bandwidth according to the SRS arrangement information transmitted from the base station and furthermore controls the transmission interval of the frequency-multiplexed SRS.
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Patent Agency Ranking
公开(公告)号：US20160352446A1
公开(公告)日：2016-12-01
申请号：US15211807
申请日：2016-07-15
Inventor： Seigo Nakao , Daichi Imamura , Katsuhiko Hiramatsu
CPC classification number: H04J11/005 , H04B1/713 , H04J13/0059 , H04J13/0074 , H04L5/0055 , H04L5/0057 , H04L5/0073 , H04W72/0413 , H04W72/042 , H04W88/08
Abstract: A radio communication device capable of randomizing both inter-cell interference and intra-cell interference. In this device, a spreading section primarily spreads a response signal in a ZAP sequence set by a control unit. A spreading section secondarily spreads the primarily spread response signal in a block-wise spreading code sequence set by the control unit. The control unit controls the cyclic shift amount of the ZAC sequence used for the primary spreading in the spreading section and the block-wise spreading code sequence used for the secondary spreading in the spreading section according to a set hopping pattern. The hopping pattern set by the control unit is made up of two hierarchies. An LB-based hopping pattern different for each cell is defined in the first hierarchy in order to randomize the inter-cell interference. A hopping pattern different for each mobile station is defined in the second hierarchy to randomize the intra-cell interference.
Abstract translation: 一种能够使小区间干扰和小区内干扰同时化的无线通信装置。 在该装置中，扩展部分主要在由控制单元设置的ZAP序列中扩展响应信号。 扩展部分以由控制单元设置的块式扩展码序列二次扩展主要扩展的响应信号。 控制单元根据设定的跳频图案控制在扩展部分中用于一次扩频的ZAC序列的循环移位量和用于扩展部分中的二次扩频的块式扩频码序列。 由控制单元设置的跳频图案由两层组成。 为了随机化小区间干扰，在第一层次中定义了每个小区不同的基于LB的跳频模式。 在第二层次中定义了针对每个移动站不同的跳频模式以随机化小区内干扰。
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公开(公告)号：US09490922B2
公开(公告)日：2016-11-08
申请号：US14811464
申请日：2015-07-28
Inventor： Atsushi Sumasu , Daichi Imamura , Ayako Horiuchi , Yasuaki Yuda
IPC: H04W80/04 , H04B17/309 , H04L5/00 , H04L27/26 , H04L12/18 , H04J11/00 , H04W52/02 , H04L27/12 , H04W24/08
CPC classification number: H04W52/0216 , H04B17/309 , H04J11/005 , H04J11/0053 , H04J11/0056 , H04L5/0007 , H04L5/005 , H04L12/18 , H04L12/189 , H04L27/12 , H04L27/2611 , H04W24/08 , H04W52/0206 , H04W72/005 , Y02D70/00 , Y02D70/1262 , Y02D70/1264 , Y02D70/25
Abstract: The transmission of a reference signal, such as a CSI-RS, is enabled while maintaining a power saving effect when performing inter-cell cooperative transmission/reception or the like in a plurality of cells. In order to realize inter-cell cooperative transmission/reception, a CSI-RS which is used for estimating the state of a spatial propagation path of a communication line is generated by a CSI-RS generation unit, and the CSI-RS is disposed in a predetermined subframe by a disposition unit and transmitted. At this time, when a frame has ten subframes #0 to #9, the CSI-RS is disposed in the subframes #4 and #9, which are subframes excluding the subframes #0 and #5 incapable of transmitting a CSI-RS and are subframes other than subframes capable of acting as MBSFN subframes when discontinuous communication (Extended Cell DTX) is performed so as to achieve power saving, and transmitted.
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公开(公告)号：US20160294499A1
公开(公告)日：2016-10-06
申请号：US15182523
申请日：2016-06-14
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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29.发明授权Transmission device, reception device, and method for controlling transmission power 有权发送装置，接收装置以及发送功率控制方法公开(公告)号：US09439155B2
公开(公告)日：2016-09-06
申请号：US14377147
申请日：2013-02-22
Inventor： Takashi Iwai , Kazuki Takeda , Akihiko Nishio , Daichi Imamura , Masayuki Hoshino
CPC classification number: H04W52/242 , H04L5/0091 , H04W52/146 , H04W52/362 , H04W52/40 , H04W52/58 , H04W72/0406
Abstract: This transmission device can notify of a control value pertaining to transmission power without causing an increase in the amount of signaling. A control unit (103) controls transmission power based on a bit sequence notified from a reception device and the association between the bit sequence and a control value pertaining to transmission power; in the association, each bit sequence is respectively associated with a first control value candidate group and a second control value candidate group; when the device is not the subject of cooperative reception, the control unit (103) calculates a transmission power using a control value candidate associated with the notified bit sequence among the first control value candidate group, and when the device is the subject of cooperative reception, the control unit (103) calculates a transmission power using a control value candidate associated with the notified bit sequence among the second control value candidate group.
Abstract translation: 该发送装置能够通知与发送功率有关的控制值而不引起信令量的增加。 控制单元（103）基于从接收装置通知的比特序列和比特序列与发送功率的控制值之间的关联来控制发送功率; 在关联中，每个比特序列分别与第一控制值候选组和第二控制值候选组相关联; 当设备不是协同接收的对象时，控制单元（103）使用与第一控制值候选组之间的通知的位序列相关联的控制值候选来计算发送功率，并且当该设备是协作接收的对象时 ，控制单元（103）使用与第二控制值候选组中的所通知的位序列相关联的控制值候选来计算发送功率。
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30.发明授权公开(公告)号：US09380572B2
公开(公告)日：2016-06-28
申请号：US14632382
申请日：2015-02-26
Inventor： Lei Huang , Isamu Yoshii , Daichi Imamura
CPC classification number: H04W72/042 , H04W72/005 , H04W72/121 , H04W88/04
Abstract: A base station (BS) which communicates with a plurality of mobile stations (MSs) is configured so as to comprise a control signal generation unit which generates control signals showing information on the allocation of resources for each of the plurality of mobile stations (MSs), and a transmission unit which transmits the control signals to the plurality of mobile stations (MSs). A control signal for a given mobile station (MS) includes information relating to another mobile station (MS).
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