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公开(公告)号：US20150229428A1
公开(公告)日：2015-08-13
申请号：US14692391
申请日：2015-04-21
Inventor： Takashi Iwai , Daichi Imamura , Akihiko Nishio , Yoshihiko Ogawa , Masaru Fukuoka
IPC: H04J11/00 , H04B1/7143 , H04L5/00
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.
Abstract translation: 提供了一种无线通信装置和参考信号生成方法，其中在CoMP集合内部和外部减小小区间干扰。 CoMP模式设置单元（101）设置其终端（100）是CoMP终端还是非CoMP终端。 当终端（100）被设置为非CoMP终端时，跳频图案计算单元（104）从系统中可以使用的所有ZC序列号中计算出用作发送定时的ZC序列号 。 当终端（100）被设置为CoMP终端时，跳频图案计算单元（104）通过跳转在CoMP集合内使用的ZC序列号来计算要用作发送定时的ZC序列号。 ZC序列生成部（105）使用计算出的ZC序列号，生成要用作SRS的ZC序列。
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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：US12108373B2
公开(公告)日：2024-10-01
申请号：US18330118
申请日：2023-06-06
Inventor： Takashi Iwai , Daichi Imamura , Tomofumi Takata , Yoshihiko Ogawa
IPC: H04W72/0446 , H04J13/00 , H04J13/22 , H04W72/044 , H04W72/0453
CPC classification number: H04W72/0446 , H04J13/0055 , H04J13/0062 , H04J13/22 , H04W72/0453 , H04W72/0466
Abstract: It is an object to provide a sequence allocating method that, while maintaining the number of Zadoff-Chu sequences to compose a sequence group, is configured to make it possible to reduce correlations between different sequential groups. This method comprises the steps of setting a standard sequence with a standard sequence length and a standard sequence number in a step, setting a threshold value in accordance with an RB number in a step, setting a sequence length corresponding to RB number in a step, judging whether ¦r/N−rb/Nb¦=Xth(m) is satisfied in a step, including a plurality of Zadoff-Chu sequences with a sequence number and a sequence length in a sequence group in a step if the judgment is positive, and allocating the sequence group to the same cell in a step.
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公开(公告)号：US12035292B2
公开(公告)日：2024-07-09
申请号：US17256694
申请日：2019-10-31
Inventor： Shotaro Maki , Ayako Horiuchi , Tetsuya Yamamoto , Yoshihiko Ogawa , Yihui Li , Madhav Gupta
IPC: H04W72/04 , H04L5/00 , H04W16/14 , H04W72/0453 , H04W72/23
CPC classification number: H04W72/0453 , H04L5/0092 , H04W16/14 , H04W72/23
Abstract: In an operation in a license-exempt band (unlicensed band), the present invention contributes to the provision of a mobile station, a base station, a transmission method and a receiving method which suitably transmit and receive a signal. The mobile station 200 includes: a transmission unit 205 which transmits an uplink signal; and a control unit 201 which, when a first number indicating a first resource amount that can be used in the transmission of the uplink signal includes a third number, which is different from a specific second number, as a prime factor, controls the transmission of a signal of a fourth number that does not include the third number as the prime factor by using a second resource.
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公开(公告)号：US11973603B2
公开(公告)日：2024-04-30
申请号：US17420957
申请日：2019-09-11
Inventor： Tomoya Nunome , Takashi Iwai , Hidetoshi Suzuki , Ayako Horiuchi , Yoshihiko Ogawa
IPC: H04L1/1829 , H04L5/00
CPC classification number: H04L1/1854 , H04L1/1861 , H04L5/0055 , H04L5/0064
Abstract: Provided is a base station that performs feedback with regard to data transmission. The base station includes a downlink feedback information (DFI) generation unit and a transmitter. On the basis of a resource allocation configuration that was configured by a terminal, the DFI generation unit determines a transmission method for feedback information that includes a response signal regarding uplink data. The transmitter transmits the feedback information on the basis of the transmission method.
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Patent Agency Ranking
公开(公告)号：US20200092867A1
公开(公告)日：2020-03-19
申请号：US16691251
申请日：2019-11-21
Inventor： Lilei Wang , Kazuki Takeda , Ayako Horiuchi , Alexander Golitschek Edler von Elbwart , Masayuki Hoshino , Yoshihiko Ogawa
Abstract: The present disclosure aims at allowing a demodulation reference signal (DMRS) pattern suitable for a terminal to be selected from among a plurality of DMRS patterns including Legacy DMRS and Reduced DMRS. Disclosed is a terminal including: reception section 21 that receives uplink control information; control section 23 that determines a specific mapping pattern from among a plurality of mapping patterns for an uplink DMRS on the basis of the control information; and DMRS generating section 24 that generates a DMRS according to the specific mapping pattern.
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公开(公告)号：US20190007934A1
公开(公告)日：2019-01-03
申请号：US16109331
申请日：2018-08-22
Inventor： Lilei Wang , Kazuki Takeda , Ayako Horiuchi , Alexander Golitschek Edler von Elbwart , Masayuki Hoshino , Yoshihiko Ogawa
CPC classification number: H04W72/042 , H04L5/0023 , H04L5/0035 , H04L5/0048 , H04L5/0094 , H04L25/0226 , H04W16/32
Abstract: The present disclosure aims at allowing a demodulation reference signal (DMRS) pattern suitable for a terminal to be selected from among a plurality of DMRS patterns including Legacy DMRS and Reduced DMRS. Disclosed is a terminal including: reception section 21 that receives uplink control information; control section 23 that determines a specific mapping pattern from among a plurality of mapping patterns for an uplink DMRS on the basis of the control information; and DMRS generating section 24 that generates a DMRS according to the specific mapping pattern.
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28.发明授权公开(公告)号：US09813263B2
公开(公告)日：2017-11-07
申请号：US14378071
申请日：2013-02-22
Inventor： Takashi Iwai , Daichi Imamura , Akihiko Nishio , Yoshihiko Ogawa , Kazuki Takeda
IPC: H04J1/16 , H04L25/02 , H04J13/22 , H04J11/00 , H04J13/00 , H04B7/024 , H04L5/00 , H04L25/03 , H04B7/0452 , H04W84/04
CPC classification number: H04L25/024 , H04B7/024 , H04B7/0452 , H04J11/005 , H04J13/0062 , H04J13/22 , H04L5/001 , H04L5/0048 , H04L25/0204 , H04L25/022 , H04L25/0228 , H04L25/03159 , H04L2025/03426 , H04W84/042
Abstract: The present invention adopts a configuration such that when cooperative reception by a plurality of base stations is not applied, a reference signal sequence determined from a selection baseline value corresponding to the number of a sequence group allocated to a cell belonging to the device in question is selected from among a plurality of selection baseline values as a reference signal sequence for non-cooperative reception, whereas when cooperative reception by a plurality of base stations is applied, a reference signal sequence determined from one or more intermediate selection baseline values set between two adjacent selection baseline values corresponding to the number of a sequence group allocated individually to a terminal device is selected among the plurality of selection baseline values as a reference signal sequence for cooperative reception differing from the reference signal sequence for non-cooperative reception.
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公开(公告)号：US20160226534A1
公开(公告)日：2016-08-04
申请号：US15021253
申请日：2013-09-25
Inventor： Hidetoshi Suzuki , Lilei Wang , Michael Einhaus , Yoshihiko Ogawa , Masayuki Hoshino , Li Wang
CPC classification number: H04B1/10 , H04J11/0053 , H04L5/0073 , H04W72/0406
Abstract: The wireless communication method used for transmitting interfering resource allocation information (IRAI) comprises a step of transmitting the IRAI through L1 signaling from the serving eNB to the victim UE, wherein the IRAI indicates only interfering resource block (RB) allocation within the bandwidth of RBs allocated to the victim UE at least in the case that the resource allocation type of the interfering UE is type 0, type 1, or type 2-L. The resource allocation type of the interfering UE can be signaled from the serving eNB to the victim UE within the downlink control information (DCI) of the victim UE for allocating resource. The indication mode of the IRAI for at least one interfering UE among the multiple interfering UEs that belong to a same interfering cell can be dependent on those interfering UEs whose IRAI has been indicated among the multiple interfering UEs.
Abstract translation: 用于发送干扰资源分配信息（IRAI）的无线通信方法包括通过L1信令从服务eNB向受害者UE发送IRAI的步骤，其中IRAI仅在RB的带宽内指示干扰资源块（RB）分配 至少在干扰UE的资源分配类型为类型0，类型1或类型2-L的情况下，分配给受害者UE。 可以在用于分配资源的受害者UE的下行链路控制信息（DCI）内，从服务eNB向受害者UE发信号通知干扰UE的资源分配类型。 属于相同干扰小区的多个干扰UE中的至少一个干扰UE的IRAI的指示模式可以依赖于在多个干扰UE中已经指示其IRAI的干扰UE。
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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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