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公开(公告)号：US20150327270A1
公开(公告)日：2015-11-12
申请号：US14799316
申请日：2015-07-14
Inventor： Takashi Iwai , Sadaki Futagi , Daichi Imamura , Akihiko Nishio , Seigo Nakao , Yoshihiko Ogawa
CPC classification number: H04W72/0453 , H04L5/0037 , H04L5/0041 , H04L5/006 , H04L5/0064 , H04L5/0091 , H04W72/0406 , H04W72/0413 , H04W72/042 , H04W72/08
Abstract: A scheduling apparatus and a scheduling method, wherein the amount of signaling for frequency resource allocation information can be reduced while maintaining system throughput performance. In a base station apparatus (100), a scheduling section (113) allocates frequency resources to frequency allocation target terminals based on set frequency allocation units, and a frequency allocation parameter setting section (112) adjusts the set frequency allocation units set in the scheduling section (113) based on cluster numbers. Due to this, in each cluster number, frequency resources can be allocated based on the most suitable frequency allocation units with respect to the signaling bit number. As a result, the amount of signaling for frequency resource allocation information can be reduced. Further, system throughput can be maintained by making the cluster number, which is a parameter having little effect on system throughput, a setting parameter for frequency allocation units.
Abstract translation: 一种调度装置和调度方法，其中可以在维持系统吞吐量性能的同时减少频率资源分配信息的信令量。 在基站装置（100）中，调度部（113）基于设定的频率分配单位向频率分配对象终端分配频率资源，频率分配参数设定部（112）对调度中设定的设定频率分配单位进行调整 （113）基于簇号。 因此，在每个簇号中，可以基于针对信令比特数的最合适的频率分配单元来分配频率资源。 结果，可以减少用于频率资源分配信息的信令量。 此外，可以通过使作为对系统吞吐量影响不大的参数的簇号，频率分配单元的设定参数来维持系统吞吐量。
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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：US20150163795A1
公开(公告)日：2015-06-11
申请号：US14624225
申请日：2015-02-17
Inventor： Akihiko Nishio , Daichi Imamura
CPC classification number: H04W72/0413 , H04B1/713 , H04L1/0026 , H04L1/0027 , H04L1/0029 , H04L1/0072 , H04L5/0023 , H04L5/0048 , H04L5/0053 , H04L5/0055 , H04L5/0091 , H04W72/0406 , H04W72/042
Abstract: Provided are a communication device and an SRS transmission method capable of reducing the possibility of a difference in recognition between the presence or absence of an SRS transmission between a base station and a terminal or of an SRS resource so as to prevent degradation of system throughput. At a terminal (200), a reception processing unit (203) detects control information indicating whether or not to request transmission of a sounding reference signal (SRS), whereupon a transmission signal forming unit (207) transmits an A-SRS by way of control by a transmission control unit (206) on the basis of control information. The transmission control unit (206) determines whether or not to execute SRS transmission on the basis of an “SRS Transmission Execution Rule” and the reception status of trigger information.
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公开(公告)号：US20150155923A1
公开(公告)日：2015-06-04
申请号：US14615359
申请日：2015-02-05
Inventor： Hui Tong , Masayuki Hoshino , Ming Xu , Seigo Nakao , Daichi Imamura
CPC classification number: H04B7/0478 , H04B7/024 , H04B7/0456 , H04B7/0469 , H04B7/0634 , H04B7/0639 , H04B7/0641 , H04B7/0663 , H04B2001/3855 , H04B2001/3861 , H04L25/03904 , H04L25/03917 , H04W88/02 , H04W88/08
Abstract: The present disclosure provides a method of generating codebook in a wireless communication system with multiple antenna arrays, as well as a wireless communication system, base station and terminal using the codebook for communication. The method comprises steps of: providing a basic codebook which contains multiple pre-coding matrices; and assigning phase offsets to certain pre-coding matrices in the basic codebook to form a codebook with phase offset. The feedback overhead from a client to a base station side is reduced and a good precision of feedback for multi-antenna array is kept by applying the method of generating codebook and using the generated codebook in the wireless communication system, base station and terminal.
Abstract translation: 本公开提供了一种在具有多个天线阵列的无线通信系统中生成码本的方法，以及使用该通信码本的无线通信系统，基站和终端。 该方法包括以下步骤：提供包含多个预编码矩阵的基本码本; 并将相位偏移分配给基本码本中的某些预编码矩阵以形成具有相位偏移的码本。 降低了从客户端到基站侧的反馈开销，通过在无线通信系统，基站和终端中应用生成码本的方法和使用生成的码本来保持多天线阵列的反馈精度良好。
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公开(公告)号：US09036587B2
公开(公告)日：2015-05-19
申请号：US13866877
申请日：2013-04-19
Inventor： Seigo Nakao , Akihiko Nishio , Daichi Imamura
CPC classification number: H04W72/042 , H04L1/1822 , H04L5/001 , H04L5/0023 , H04L5/0055 , H04L5/0094 , H04W4/06 , H04W72/0413 , H04W72/0453
Abstract: Disclosed is a base station in which the frequency usage efficiency can be improved when the communication bandwidths are asymmetric in the uplink line and the downlink line. A base station can communicate by using a plurality of downlink unit bands and a smaller number of uplink unit bands. A control unit allocates uplink resource allocation information and downlink resource allocation information to a PDCCH which is arranged in each of the plurality of downlink unit bands, and allocates a response signal to the uplink line data to a PHICH which is arranged in the same number of downlink unit bands from the plurality of downlink unit bands as there are uplink unit bands. A transmit RF unit transmits the resource allocation information or the response signal.
Abstract translation: 公开了一种基站，其中当上行线路和下行线路中的通信带宽不对称时，能够提高频率使用效率。 基站可以通过使用多个下行单位频带和较小数量的上行单位频带进行通信。 控制单元将上行链路资源分配信息和下行链路资源分配信息分配给配置在多个下行链路单位频带中的每一个中的PDCCH，并且向上行线路数据分配响应信号到以相同数量的 具有上行链路单位频带的来自多个下行单位频带的下行单位频带。 发送RF单元发送资源分配信息或响应信号。
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Patent Agency Ranking
16.发明申请REFERENCE SIGNAL RECEPTION AND CQI COMPUTATION METHOD AND WIRELESS COMMUNICATION APPARATUS 有权参考信号接收和CQI计算方法和无线通信装置公开(公告)号：US20150131472A1
公开(公告)日：2015-05-14
申请号：US14602176
申请日：2015-01-21
Inventor： Akihiko Nishio , Seigo Nakao , Daichi Imamura
CPC classification number: H04L5/0057 , H04B7/0615 , H04B7/0632 , H04L1/1812 , H04L5/0012 , H04L5/0023 , H04L5/0028 , H04L5/0041 , H04L5/005 , H04L5/0051 , H04L5/006 , H04L5/0073 , H04L5/0082 , H04W72/042 , H04W72/0446 , H04W72/1226
Abstract: A wireless communication base station apparatus which is able to prevent deterioration in the throughput of LTE terminals even when LTE terminals and LTE+ terminals coexist. In this apparatus, based on the mapping pattern of the reference signals used only in LTE+ terminals, a setting unit sets, in each subframe, the resource block groups where the reference signals used only by the LTE+ terminals are mapped. For symbols mapped to the antennas, an mapping unit maps, to all the resource blocks within one frame, cell specific reference signals used for both LTE terminals and LTE+ terminals. For the symbols mapped to the antennas, the mapping unit maps, to the plurality of resource blocks, of which part of the resource block groups is comprised, in the same subframe within one frame, the cell specific reference signals used only for LTE+ terminals, based on the setting results inputted from the setting unit.
Abstract translation: 即使LTE终端和LTE +终端共存，也能够防止LTE终端的吞吐量恶化的无线通信基站装置。 在该装置中，基于仅在LTE +终端中使用的参考信号的映射模式，设定部在每个子帧中设定映射了仅由LTE +终端使用的基准信号的资源块组。 对于映射到天线的符号，映射单元映射到一个帧内的所有资源块，用于LTE终端和LTE +终端的小区特定参考信号。 对于映射到天线的符号，映射单元在一个帧内的同一子帧中将包含资源块组的哪部分的多个资源块映射到仅用于LTE +终端的小区特定参考信号， 基于从设定单元输入的设定结果。
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公开(公告)号：US08995557B2
公开(公告)日：2015-03-31
申请号：US14316634
申请日：2014-06-26
Inventor： Hui Tong , Masayuki Hoshino , Ming Xu , Seigo Nakao , Daichi Imamura
CPC classification number: H04B7/0478 , H04B7/024 , H04B7/0456 , H04B7/0469 , H04B7/0634 , H04B7/0639 , H04B7/0641 , H04B7/0663 , H04B2001/3855 , H04B2001/3861 , H04L25/03904 , H04L25/03917 , H04W88/02 , H04W88/08
Abstract: The present disclosure provides a method of generating codebook in a wireless communication system with multiple antenna arrays, as well as a wireless communication system, base station and terminal using the codebook for communication. The method comprises steps of: providing a basic codebook which contains multiple pre-coding matrices; and assigning phase offsets to certain pre-coding matrices in the basic codebook to form a codebook with phase offset. The feedback overhead from a client to a base station side is reduced and a good precision of feedback for multi-antenna array is kept by applying the method of generating codebook and using the generated codebook in the wireless communication system, base station and terminal.
Abstract translation: 本公开提供了一种在具有多个天线阵列的无线通信系统中生成码本的方法，以及使用该通信码本的无线通信系统，基站和终端。 该方法包括以下步骤：提供包含多个预编码矩阵的基本码本; 并将相位偏移分配给基本码本中的某些预编码矩阵以形成具有相位偏移的码本。 降低了从客户端到基站侧的反馈开销，通过在无线通信系统，基站和终端中应用生成码本的方法和使用生成的码本来保持多天线阵列的反馈精度良好。
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公开(公告)号：US08995350B2
公开(公告)日：2015-03-31
申请号：US14179905
申请日：2014-02-13
Inventor： Yasuaki Yuda , Seigo Nakao , Ayako Horiuchi , Akihiko Nishio , Daichi Imamura , Kenichi Miyoshi
CPC classification number: H04W72/005 , H04B17/318 , H04B17/345 , H04L5/0073 , H04W24/08 , H04W24/10 , H04W72/0413 , H04W72/042 , H04W72/0446 , H04W72/085
Abstract: Provided is a radio communication terminal which is capable of measuring quality in communication with a handover destination with high accuracy. The radio communication terminal is capable of communicating with a base station or a relay node, and includes: a receiver which receives control information including information relating to measurement of measuring quality of a neighbor cell; an extractor which extracts information on a subframe where the measurement should be performed, which is a subframe where only transmission of a signal from the relay node connected to the base station is performed, from the information relating to the measurement; a measurement section which performs the measurement, on a subframe basis, based on the extracted information on the subframe where the measurement should be performed; and a transmitter which transmits a result of the measurement to the base station or the relay node.
Abstract translation: 提供了能够高精度地测量与切换目的地的通信质量的无线电通信终端。 无线电通信终端能够与基站或中继节点通信，并且包括：接收机，其接收包括与相邻小区的测量质量的测量有关的信息的控制信息; 从与所述测量有关的信息中提取作为仅执行来自连接到所述基站的所述中继节点的信号的信号的子帧的，应当执行所述测量的子帧的信息的提取器; 测量部，其基于所提取的关于应当进行测量的子帧的信息，在子帧的基础上进行测量; 以及将测量结果发送到基站或中继节点的发射机。
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公开(公告)号：US08982690B2
公开(公告)日：2015-03-17
申请号：US14169057
申请日：2014-01-30
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.
Abstract translation: 提供一种终端装置和重发控制方法，即使使用信道选择作为在使用多个的载波聚合通信的载波聚合通信期间发送响应信号的方法，也可以使上行链路控制信道（PUCCH）的开销的上升最小化 下行单位频带。 基于上行链路数据的生成状态和由CRC单元获得的错误检测结果，所提供的终端中的控制单元使用响应信号传输规则来控制响应信号的传输或指示上行链路的生成的上行链路控制信号 数据。 如果在相同传输时间单元内同时产生上行链路控制信号和响应信号，则控制单元根据响应信号的数量和位置来改变响应信号和/或响应信号的相位点的资源 错误检测结果模式。
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20.发明授权公开(公告)号：US08953704B2
公开(公告)日：2015-02-10
申请号：US14252000
申请日：2014-04-14
Inventor： Qian Yu , Lei Huang , Masayuki Hoshino , Daichi Imamura
CPC classification number: H04B7/0456 , H04B7/002 , H04B7/0413 , H04B7/0469 , H04B7/0617 , H04B7/0634 , H04B7/0639 , H04B7/0691 , H04B7/10 , H04L25/0224 , H04L25/0248 , H04L25/03898 , H04L25/03961 , H04L2025/03808
Abstract: In a MIMO system using a cross-polarized antenna structure, even if no ideal XPD can be obtained, the interference between different polarized waves can be reduced to allow an effective precoding to be executed. When a MIMO communication is performed between a transmitter and a receiver each using a cross-polarized antenna structure, a channel estimating and precoding selection section of the receiver performs a channel estimation of MIMO channels from the transmitter to the receiver, decides a precoding matrix of a projection matrix for mutually orthogonalizing or substantially orthogonalizing the channel response matrixes for respective different polarized waves, and feeds the determined precoding matrix back to the transmitter. In the transmitter, a precoding processing section applies the precoding matrix to the spatial stream corresponding to one of the polarized waves to perform a precoding, thereby allowing the transmitter to transmit the polarized waves with the orthogonality therebetween maintained.
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