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公开(公告)号：US20180070338A1
公开(公告)日：2018-03-08
申请号：US15808352
申请日：2017-11-09
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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公开(公告)号：US09370007B2
公开(公告)日：2016-06-14
申请号：US14457783
申请日：2014-08-12
Inventor： Yoshihiko Ogawa , Seigo Nakao , Daichi Imamura , Akihiko Nishio , Masayuki Hoshino , Katsuhiko Hiramatsu , Kenichi Miyoshi , Yasuaki Yuda , Sadaki Futagi , Takashi Iwai
CPC classification number: H04W72/0453 , H04L1/0042 , H04L1/0061 , H04L5/0023 , H04L5/0039 , H04L5/0048 , H04L25/0226 , H04L25/03159 , H04L27/2602
Abstract: Disclosed are a wireless communication base station device and a division number determination method that improve the frequency diversity effect while maintaining channel estimation accuracy regardless of the number of divisions in the frequency domain of a transmission signal from a wireless communication terminal device. A determination unit determines the number of divisions in the frequency domain of a transmission signal from a wireless communication terminal device. Here, the determination unit increases the number of divisions in the frequency domain of the transmission signal from the wireless communication terminal device as the number of pilot blocks included in the transmission signal increases. In addition, a scheduling unit schedules allocation to the frequency resources of the divided transmission signal according to the number of divisions determined by the determination unit.
Abstract translation: 公开了一种无线通信基站装置和分割数确定方法，无论来自无线通信终端装置的发送信号的频域中的分割数如何，都可以在维持信道估计精度的同时提高频率分集效应。 确定单元确定来自无线通信终端设备的发送信号的频域中的分割数。 这里，确定单元随着发送信号中包括的导频块的数量的增加，增加来自无线通信终端装置的发送信号的频域的分割数。 此外，调度单元根据由确定单元确定的分割数来调度分配的发送信号的频率资源。
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公开(公告)号：US09331753B2
公开(公告)日：2016-05-03
申请号：US14639466
申请日：2015-03-05
Inventor： Takashi Iwai , Akihiko Nishio , Yoshihiko Ogawa , Seigo Nakao , Masayuki Hoshino
CPC classification number: H04L5/0048 , H04B7/024 , H04B7/0452 , H04J11/0023 , H04J11/0026 , H04J11/0053 , H04J11/0056 , H04J13/0062 , H04L5/0032 , H04L5/0035 , H04L23/02 , H04L27/2613 , H04L47/34
Abstract: Provided are a radio communication terminal apparatus and a radio transmission method by which intersymbol interference of DM-RS of a CoMP terminal and a Non-CoMP terminal can be reduced. A CoMP set setting unit (102) sets the cell IDs of all cells in the CoMP set in a cell selection unit (104), and a serving cell setting unit (103) sets the cell ID of the serving cell in the cell selection unit (104). The cell selection unit (104) selects the cell ID having a number closest to the cell ID of the serving cell from the cells in the CoMP set. A sequence information calculation unit (106) derives a sequence group number from the selected cell ID, and the sequence information calculation unit (106) calculates a sequence number from the derived sequence group number and a transmission bandwidth of the DM-RS.
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64.发明申请公开(公告)号：US20160112994A1
公开(公告)日：2016-04-21
申请号：US14777702
申请日：2013-04-01
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 invention 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.
Abstract translation: 本发明旨在允许从包括Legacy DMRS和Reduced DMRS的多个DMRS模式中选择适合于终端的解调参考信号（DMRS）模式。 公开了一种终端，包括：接收部（21），其接收上行控制信息; 控制部分（23），其基于所述控制信息从上行链路DMRS的多个映射模式中确定特定映射模式; 和DMRS生成部（24），其根据特定的映射模式生成DMRS。
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65.发明授权Apparatus and method for generating and transmitting reference signal in radio communication 有权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：US09313795B2
公开(公告)日：2016-04-12
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.
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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Patent Agency Ranking
公开(公告)号：US09313051B2
公开(公告)日：2016-04-12
申请号：US14299814
申请日：2014-06-09
Inventor： Yoshihiko Ogawa , Daichi Imamura , Kenichi Miyoshi , Takashi Iwai , Tomofumi Takata
CPC classification number: H04L25/0258 , H04J13/0062 , H04J13/10 , H04L7/007 , H04L7/042 , H04W72/042
Abstract: Provided is a cyclic shift sequence generation method which can prevent coming of an interference wave into a desired wave detection window even if a cyclic shift sequence has a high mutual correlation in different bandwidths, thereby improving a channel estimation accuracy in a base station. In this method, a cyclic shift sequence number to be allocated to a cell is decided in advance. Moreover, when the cyclic shift amount between cyclic shift sequences allocated in cells is Δ1 and the cyclic shift amount of the cyclic shift sequences allocated between the cells is Δ2, Δ1 and Δ2 are made different when generating a cyclic shift sequence.
Abstract translation: 提供了一种循环移位序列生成方法，即使循环移位序列在不同带宽中具有高相互关系，也能够防止干扰波进入期望的波检测窗口，从而提高基站中的信道估计精度。 在该方法中，预先决定分配给单元的循环移位序列号。 此外，当在单元中分配的循环移位序列之间的循环移位量为＆Dgr1，并且在单元之间分配的循环移位序列的循环移位量为＆Dgr; 2，＆Dgr; 1和＆Dgr; 2在生成 循环移位序列。
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公开(公告)号：US20160050051A1
公开(公告)日：2016-02-18
申请号：US14927159
申请日：2015-10-29
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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公开(公告)号：US09265046B2
公开(公告)日：2016-02-16
申请号：US13887671
申请日：2013-05-06
Inventor： Yoshihiko Ogawa , Daichi Imamura , Takashi Iwai , Katsuhiko Hiramatsu , Tomofumi Takata , Atsushi Matsumoto
CPC classification number: H04W72/0453 , H04J1/02 , H04J13/0055 , H04J13/22
Abstract: A radio transmission device and a radio communication method employ sequence length decision units which hold a correspondence in which one basic sequence length is set for a plurality of transmission bandwidths. The sequence length decision units acquire transmission bandwidth information and decide a sequence length corresponding to the acquired transmission bandwidth information. A decision is made as to which of the cyclic extension process or the truncation process is to be executed on a Zadoff-Chu sequence according to the sizes of the acquired transmission bandwidth information and the basic sequence length. Then, a difference between the transmission bandwidth and the basic sequence length, i.e., the number of possible cyclic extension/truncation symbols, is obtained.
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69.发明申请公开(公告)号：US20150381258A1
公开(公告)日：2015-12-31
申请号：US14848167
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.
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公开(公告)号：US20150288550A1
公开(公告)日：2015-10-08
申请号：US14746549
申请日：2015-06-22
Inventor： Yoshihiko Ogawa , Akihiko Nishio , Masayuki Hoshino , Takashi Iwai
CPC classification number: H04W72/0453 , H04B7/0615 , H04B7/0632 , H04B7/0684 , H04J13/004 , H04L5/0016 , H04L5/0023 , H04L5/0037 , H04L5/0048 , H04L5/005 , H04L5/0051 , H04L5/0053 , H04L5/0058 , H04L5/0094 , H04L27/2613 , H04L69/324 , H04W24/10 , H04W72/04 , H04W72/0406
Abstract: Provided is a transmitter which improves the flexibility of SRS resource allocation without increasing the amount of signaling for notifying the cyclic shift amount. In the transmitter, with regard to each basic shift amount candidate group having a basic shift amount from 0 to N−1, a transmission control unit (206) specifies the actual shift amount imparted to a cyclic shift sequence used in scrambling a reference signal transmitted from each antenna port, said specification being performed based on a table in which cyclic shift amount candidates correspond to each antenna port, and based on setting information transmitted from a base station (100). With regard to basic shift amount candidates for shift amount X, the table differentiates between an offset pattern comprising offset values for cyclic shift amount candidates corresponding to each antenna port and an offset pattern corresponding to basic shift amount candidates of X+N/2.
Abstract translation: 提供了一种在不增加用于通知循环移位量的信令量的情况下提高SRS资源分配的灵活性的发射机。 在发送机中，发送控制部（206）对于从0到N-1的基本偏移量的每个基本移动量候选组，规定了对发送的参考信号进行加扰时使用的循环移位序列的实际移位量 根据从每个天线端口，基于从基站（100）发送的设置信息，循环移位量候选对应于每个天线端口的表执行所述规范。 对于移位量X的基本偏移量候补，表格区分包括与每个天线端口对应的循环移位量候选的偏移值的偏移模式和对应于X + N / 2的基本移动量候补的偏移模式。
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