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公开(公告)号：US10660092B2
公开(公告)日：2020-05-19
申请号：US16163117
申请日：2018-10-17
Inventor： Takashi Iwai , Daichi Imamura , Tomofumi Takata , Yoshihiko Ogawa
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 includes the steps of setting a standard sequence with a standard sequence length (Nb) and a standard sequence number (rb) in a step (ST101), setting a threshold value (Xth(m)) in accordance with an RB number (m) in a step (ST103), setting a sequence length (N) corresponding to RB number (m) in a step (ST104), judging whether ¦r/N−rb/Nb¦=Xth(m) is satisfied in a step (ST106), including a plurality of Zadoff-Chu sequences with a sequence number (r) and a sequence length (N) in a sequence group (rb) in a step (ST107) if the judgment is positive, and allocating the sequence group (rb) to the same cell in a step (ST112).
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2.发明授权公开(公告)号：US10454720B2
公开(公告)日：2019-10-22
申请号：US15724105
申请日：2017-10-03
Inventor： Takashi Iwai , Daichi Imamura , Akihiko Nishio , Yoshihiko Ogawa , Kazuki Takeda
IPC: H04L25/02 , H04J13/22 , H04L5/00 , H04J11/00 , H04J13/00 , H04B7/024 , H04L25/03 , H04B7/0452 , H04W84/04
Abstract: A mobile terminal determine a reference signal sequence number based on a sequence length and a first selection reference value used for a first communication system that is different from a second communication system adapting a 3GPP release 10 or earlier. The first selection reference value is obtained from a sequence group number assigned to the terminal and different from a second selection reference value used for the second communication system. The mobile terminal generates a reference signal based on the determined reference signal sequence number and transmits the generated reference signal.
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公开(公告)号：US10154484B2
公开(公告)日：2018-12-11
申请号：US14683962
申请日：2015-04-10
Inventor： Takashi Iwai , Daichi Imamura , Tomofumi Takata , Yoshihiko Ogawa
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 includes the steps of setting a standard sequence with a standard sequence length (Nb) and a standard sequence number (rb) in a step (ST101), setting a threshold value (Xth(m)) in accordance with an RB number (m) in a step (ST103), setting a sequence length (N) corresponding to RB number (m) in a step (ST104), judging whether ¦r/N−rb/Nb¦=Xth(m) is satisfied in a step (ST106), including a plurality of Zadoff-Chu sequences with a sequence number (r) and a sequence length (N) in a sequence group (rb) in a step (ST107) if the judgment is positive, and allocating the sequence group (rb) to the same cell in a step (ST112).
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公开(公告)号：US20160105269A1
公开(公告)日：2016-04-14
申请号：US14973525
申请日：2015-12-17
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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公开(公告)号：US09313808B2
公开(公告)日：2016-04-12
申请号：US14303351
申请日：2014-06-12
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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Patent Agency Ranking
公开(公告)号：US09295078B2
公开(公告)日：2016-03-22
申请号：US14619615
申请日：2015-02-11
Inventor： Seigo Nakao , Akihiko Nishio , Ayako Horiuchi , Daichi Imamura
CPC classification number: H04W72/0413 , H04L1/0061 , H04L1/08 , H04L1/1671 , H04L1/1854 , H04W28/04 , H04W52/0212 , H04W72/04 , H04W72/1278 , H04W72/1284 , H04W76/28 , Y02D70/1262 , Y02D70/1264 , Y02D70/25
Abstract: Provided are a terminal device and a retransmission control method that make it possible to minimize increases in overhead in an uplink control channel (PUCCH), even if channel selection is used as the method to transmit response signals during carrier-aggregation communication using a plurality of downlink unit bands. On the basis of the generation status of uplink data and error-detection results obtained by a CRC unit, a control unit in the provided terminal uses response signal transmission rules to control the transmission of response signals or uplink control signals that indicate the generation of uplink data. If an uplink control signal and a response signal are generated simultaneously within the same transmission time unit, the control unit changes the resources allocated to the response signal and/or the phase point of the response signal in accordance with the number and position of ACKs within the error-detection result pattern.
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7.发明授权Terminal device, base station device, transmission method and reception method 有权终端设备，基站设备，传输方式和接收方式公开(公告)号：US09276717B2
公开(公告)日：2016-03-01
申请号：US14352612
申请日：2012-10-24
Inventor： Toru Oizumi , Daichi Imamura
CPC classification number: H04L5/0037 , H04L5/001 , H04L5/0053 , H04L5/0096 , H04L5/14
Abstract: The present disclosure enables dynamic switching to a frame format different from the UL-DL configuration set by an SIB, and in particular switching to a downlink communication subframe from an uplink communication subframe, while also enabling effective utilization of downlink communication subframes. A base station uses “UL/DL communication subframe switching information” included in a DCI sent by a downlink communication subframe to instruct a terminal whether or not to perform uplink communication to a DCI using one or more uplink-specific communication subframes, and also gives instructions whether to perform uplink communication or downlink communication on an uplink communication subframe switchable to a downlink communication subframe.
Abstract translation: 本公开使得能够动态切换到与由SIB设置的UL-DL配置不同的帧格式，并且特别是从上行链路通信子帧切换到下行链路通信子帧，同时还能够有效地利用下行链路通信子帧。 基站使用由下行链路通信子帧发送的DCI中包含的“UL / DL通信子帧切换信息”来指示终端是否使用一个或多个上行链路专用通信子帧向DCI执行上行链路通信，并且还给出 指示是否在可切换到下行链路通信子帧的上行链路通信子帧上执行上行链路通信或下行链路通信。
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公开(公告)号：US20160028508A1
公开(公告)日：2016-01-28
申请号：US14874114
申请日：2015-10-02
Inventor： Toru Oizumi , Daichi Imamura , Akihiko Nishio , Hidetoshi Suzuki
CPC classification number: H04W72/0446 , H04L1/1854 , H04L1/1861 , H04L5/001 , H04L5/0085 , H04W72/042 , H04W72/1289 , H04W84/042 , H04W88/02
Abstract: The purpose of the present invention is to inhibit an increase in the amount of A/N resources, without changing the timing at which the error detection result of an SCell is notified when UL-DL configurations to be configured for each of the unit bands are different, from the timing at which the error detection result is notified when just a single unit band is configured. A control unit (208) transmits, using a first unit band, a response signal including error detection results about data received with both the first unit band and a second unit band. In a first composition pattern set for the first unit band, an uplink communication subframe is set to be the same timing as at least an uplink communication subframe of a second composition pattern set for the second unit band.
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9.发明授权Base station, terminal, band allocation method, and downlink data communication method 有权基站，终端，频带分配方法和下行数据通信方式公开(公告)号：US09237575B2
公开(公告)日：2016-01-12
申请号：US14550790
申请日：2014-11-21
Inventor： Seigo Nakao , Katsuhiko Hiramatsu , Akihiko Nishio , Daichi Imamura
CPC classification number: H04L5/001 , H04L5/0007 , H04L5/0048 , H04L5/0053 , H04L27/2647 , H04W56/0015 , H04W72/0406 , H04W72/0413 , H04W72/042 , H04W72/0446 , H04W72/0453 , H04W72/048
Abstract: Provided are a base station, a terminal, a band allocation method, and a downlink data communication method with which bands can be efficiently allocated. In a base station in which a plurality of unit bands can be allocated to a single communication, when a data receiver acquires terminal capability information transmitted by a terminal in the initial access unit band and the bandwidth available for communication indicated by the terminal capability information can accommodate a plurality of unit bands, a unit band group which includes the initial access unit band as well as the unit bands adjacent thereto is allocated to the terminal, and a communication band movement indication, which indicates the movement of the center frequency in the communication band of the terminal toward the center frequency in the unit band group, is transmitted to the terminal using the initial access unit band.
Abstract translation: 提供可以有效地分配频带的基站，终端，频带分配方法和下行链路数据通信方法。 在可以将多个单位频带分配给单个通信的基站中，当数据接收机获取由终端能力信息指示的初始接入单元频带中的终端发送的终端能力信息和可用于通信的带宽时， 容纳多个单位频带，将包括初始接入单元频带的单位频带组以及与其相邻的单位频带分配给终端，以及指示通信中的中心频率的移动的通信频带移动指示 使用初始接入单元频带向终端发送终端朝向单位频带组中的中心频率的频带。
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公开(公告)号：US20150358110A1
公开(公告)日：2015-12-10
申请号：US14828247
申请日：2015-08-17
Inventor： Sadaki Futagi , Daichi Imamura , Seigo Nakao , Masayuki Hoshino , Akihiko Nishio
CPC classification number: H04L1/001 , H04L1/0004 , H04L1/0015 , H04L1/0017 , H04L1/1812 , H04L5/0053 , H04L5/0055 , H04W72/0413 , H04W72/06 , H04W72/082
Abstract: Disclosed are an encoding ratio setting method and a radio communication device which can avoid encoding of control information at an encoding ratio lower than necessary and suppress lowering of the transmission efficiency of the control information. In the device, an encoding ratio setting unit (122) sets the encoding ratio R′control of the control information which is time-multiplexed with user data, according to the encoding ratio Rdata of the user data, ΔPUSCHoffset as the PUSCH offset of each control information, and ΔRANKoffset as the rank offset based on the rank value of the data channel using Expression (1). R control ′ = O Q ′ = max ( O ⌈ O 10 - Δ offset PUSCH + Δ offset Rank 10 · R data ⌉ , O 4 · M sc ) ( 1 ) Where ┌x┐ is an integer not greater than x, and max(x,y) is the greater one among X and Y.
Abstract translation: 公开了一种编码比率设定方法和无线通信装置，其可以避免编码率低于必要的编码，并抑制控制信息的传输效率的降低。 在该装置中，编码比设定部（122）根据用户数据的编码比Rdata＆Dgr; PUSCHoffset将与时间复用的控制信息的编码率R'control设置为用户数据作为PUSCH偏移量 以及＆Dgr; RANKoffset作为基于使用表达式（1）的数据信道的秩值的秩偏移。 R control'= OQ'= max（O⌈O 10 - ＆Dgr; offset PUSCH +＆Dgr; offset Rank 10·R data⌉，O 4·M sc）（1）其中┌x┐是不大于x的整数， 并且max（x，y）是X和Y中较大的一个。
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