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公开(公告)号：US09374129B2
公开(公告)日：2016-06-21
申请号：US14970255
申请日：2015-12-15
Inventor： Daichi Imamura , Takashi Iwai , Kazunori Inogai , Sadaki Futagi , Atsushi Matsumoto
IPC: H04W4/00 , 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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22.发明申请WIRELESS BASE STATION APPARATUS, WIRELESS TERMINAL APPARATUS, FREQUENCY RESOURCE ALLOCATION METHOD, AND METHOD OF FORMING TRANSMISSION SIGNAL 有权无线基站装置，无线终端装置，频率资源分配方法和形成传输信号的方法公开(公告)号：US20160028523A1
公开(公告)日：2016-01-28
申请号：US14875444
申请日：2015-10-05
Inventor： Takashi Iwai , Akihiko Nishio , Daichi Imamura , Seigo Nakao , Yoshihiko Ogawa
CPC classification number: H04L5/0048 , H04B1/713 , H04L5/0041 , H04L5/0057 , H04L5/006 , H04L5/0064 , H04L25/0224 , H04W24/00 , H04W72/042 , H04W72/0453 , H04W72/0486 , H04W72/085 , H04W88/08
Abstract: A wireless base station apparatus and wireless terminal apparatus with a configuration which can prevent reductions in the accuracy of channel estimation when non-contiguous band transmission and SRS transmission are employed in an uplink line. In the base station apparatus (100), an allocation setting unit (106), which sets the reception band of an SRS at an SRS extraction unit (103) and sets the units of frequency allocation (RBG) at a CQ1 estimation unit (104) and allocation unit (105), matches the frequency position at the end of the SRS reception band to the frequency position at the end of any of the units of frequency allocation and sets the reception bandwidth of the reference signal to a natural number multiple of the bandwidth of the unit of frequency allocation. In the terminal apparatus (200), a band information setting unit (204), which sets the transmission band and units of frequency allocation (RBG), matches the frequency position at the end of the transmission band to the frequency position at the end of any of the units of frequency allocation and sets the transmission bandwidth of the SRS to a natural number multiple of the bandwidth of the unit of frequency allocation.
Abstract translation: 一种无线基站装置和无线终端装置，具有能够防止在上行链路线路中使用非连续波段发送和SRS发送时信道估计的精度降低的结构。 在基站装置（100）中，分配设定单元（106）在SRS提取单元（103）设置SRS的接收频带，并将CQ1估计单元（104）中的频率分配单位（RBG） ）和分配单元（105）将SRS接收频带的结束处的频率位置与频率分配的任何单位的结束处的频率位置相匹配，并将参考信号的接收带宽设定为 频率分配单位的带宽。 在终端装置（200）中，设定发送频带和频率分配单位（RBG）的频带信息设定单元（204）将发送频带结束时的频率位置与频带位置结束时的频率位置 任何频率分配单元，并将SRS的传输带宽设置为频率分配单位带宽的自然数倍。
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23.发明授权Integrated circuit for transmitting and receiving reference signal in radio communication 有权用于在无线电通信中发送和接收参考信号的集成电路公开(公告)号：US09167589B2
公开(公告)日：2015-10-20
申请号：US14699890
申请日：2015-04-29
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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24.发明申请TRANSMISSION DEVICE, RECEIVING DEVICE, TRANSMISSION METHOD, AND RECEIVING METHOD 审中-公开发送装置，接收装置，发送方法和接收方法公开(公告)号：US20150043466A1
公开(公告)日：2015-02-12
申请号：US14383021
申请日：2013-03-08
Inventor： Tadashi Yoshida , Ayako Horiuchi , Takashi Iwai , Yoshihiko Ogawa , Akihiko Nishio
CPC classification number: H04B7/0456 , H04B7/0632 , H04B7/068 , H04B7/0689 , H04B7/0691 , H04B7/0871 , H04B7/0874 , H04J13/00 , H04L5/0023 , H04L5/0051 , H04W72/04
Abstract: This invention is a transmission device capable of enhancing the reception characteristics of a terminal when employing transmit diversity using two antenna ports in an ePDCCH. In a base station (100) that transmits a reference signal to a terminal (200) using two antenna ports, a setting unit (102), on the basis of the reception quality of the terminal, sets as the aforementioned two antenna ports either a first antenna port pair for which DMRS (reference signals) do not undergo mutual code multiplexing, or a second antenna port pair for which the DMRS do undergo code multiplexing. A transmitter (109) transmits the DMRS from the two antenna ports set in the setting unit (102).
Abstract translation: 本发明是一种在ePDCCH中使用两个天线端口进行发送分集时能够提高终端的接收特性的发送装置。 在使用两个天线端口将参考信号发送到终端（200）的基站（100）中，基于终端的接收质量的设定单元（102）设定为上述两个天线端口 DMRS（参考信号）不经历相互代码复用的第一天线端口对，或DMRS进行码复用的第二天线端口对。 发送器（109）从设置在设置单元（102）中的两个天线端口发送DMRS。
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公开(公告)号：US20140286272A1
公开(公告)日：2014-09-25
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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Patent Agency Ranking
公开(公告)号：US20140286260A1
公开(公告)日：2014-09-25
申请号：US14294762
申请日：2014-06-03
Inventor： Takashi Iwai , Daichi Imamura , Akihiko Nishio , Yoshihiko Ogawa , Masaru Fukuoka
IPC: 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：US12200737B2
公开(公告)日：2025-01-14
申请号：US18581800
申请日：2024-02-20
Inventor： Tetsuya Yamamoto , Ayako Horiuchi , Takashi Iwai
IPC: H04L5/00 , H04L1/18 , H04L1/1829 , H04L5/14 , H04L69/324 , H04W28/04 , H04W72/23 , H04W88/02 , H04W88/08
Abstract: A terminal includes a receiver, which, in operation, receives time unit information related to an amount of an uplink time resource per a time unit, and receives a number of repetitions over a plurality of the time units, wherein the time unit includes a downlink time resource for a downlink signal and the uplink time resource for a response signal. The amount of the uplink time resource is expressed as a fixed number of consecutive symbols that remains the same number over the plurality of the time units over which the response signal is repeatedly transmitted. The terminal includes a transmitter, which, in operation, repeatedly transmits the response signal over the plurality of the time units.
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公开(公告)号：US12191946B2
公开(公告)日：2025-01-07
申请号：US18477223
申请日：2023-09-28
Inventor： Tadashi Yoshida , Ayako Horiuchi , Takashi Iwai , Yoshihiko Ogawa , Akihiko Nishio
Abstract: This invention is a transmission device capable of enhancing the reception characteristics of a terminal when employing transmit diversity using two antenna ports in an ePDCCH. In a base station (100) that transmits a reference signal to a terminal (200) using two antenna ports, a setting unit (102), on the basis of the reception quality of the terminal, sets as the aforementioned two antenna ports either a first antenna port pair for which DMRS (reference signals) do not undergo mutual code multiplexing, or a second antenna port pair for which the DMRS do undergo code multiplexing. A transmitter (109) transmits the DMRS from the two antenna ports set in the setting unit (102).
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公开(公告)号：US12074699B2
公开(公告)日：2024-08-27
申请号：US17601903
申请日：2020-01-22
Inventor： Takayuki Nakano , Yoshio Urabe , Takashi Iwai , Tomofumi Takata
IPC: H04L1/00 , H04L1/1812 , H04L1/1825 , H04W28/04
CPC classification number: H04L1/0026 , H04L1/1819 , H04L1/1825 , H04W28/04
Abstract: A base station is provided with: a control circuit that, on the basis of one of a communication parameter which is set in accordance with communication quality and a retransmission control operation, decides the other thereof; and a communication circuit that, on the basis of the communication parameter or retransmission control operation to be decided, communicates with a terminal.
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公开(公告)号：US12041660B2
公开(公告)日：2024-07-16
申请号：US17255912
申请日：2019-09-24
Inventor： Tomofumi Takata , Hidetoshi Suzuki , Takashi Iwai
IPC: H04W74/0833 , H04L5/00 , H04W72/23
CPC classification number: H04W74/0833 , H04L5/0048 , H04W72/23
Abstract: In the present invention, a terminal can appropriately perform a random-access process. In a terminal (100), a wireless transmission unit (111) transmits a random-access signal including at least a data part. A rank determination unit (107) controls the configuration of the data part on the basis of a parameter regarding the transmission of the random-access signal.
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