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公开(公告)号：US09143301B2
公开(公告)日：2015-09-22
申请号：US14091164
申请日：2013-11-26
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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公开(公告)号：US20150263845A1
公开(公告)日：2015-09-17
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.
Abstract translation: 提供了当在移动通信系统中使用ZC序列作为参考信号时，能够减少参考信号的小区间干扰的序列分配方法。 在序列分配方法中，将由ZC序列号r（r = 1〜R）和循环移位序列号m（m = 1〜M）指定的R×M序列划分为多个序列组X（X = 1到R），使得ZC序列被分配给每个序列组单元中的每个小区。 当假定R = 9且M = 6时，序列数为54.每个序列组由两个序列组成。 因此，序列组的数量为27.将27种类型的序列组分配给每个单元。
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公开(公告)号：US20150249963A1
公开(公告)日：2015-09-03
申请号：US14713993
申请日：2015-05-15
Inventor： Takashi Iwai , Akihiko Nishio , Daichi Imamura , Yoshihiko Ogawa , Atsushi Matsumoto
CPC classification number: H04W52/365 , H04L5/0007 , H04L5/0053 , H04W72/0473
Abstract: A radio communication apparatus is provided, which includes a receiver and a controller. The receiver, in operation, receives a first power headroom (PHR), which is obtained by subtracting a transmit power for a data channel from a maximum transmit power at a mobile station and which is transmitted from the mobile station, and receives a second PHR, which is obtained by subtracting the transmit power for the data channel and a transmit power for a control channel from the maximum transmit power at the mobile station and which is transmitted from the mobile station. The controller, in operation, selectively sets a simultaneous transmission of the data channel and the control channel in different frequency bands to be performed by the mobile station. When the data channel and the control channel are simultaneously transmitted in different frequency bands from the mobile station, the second PHR is obtained and transmitted from the mobile station.
Abstract translation: 提供了一种无线通信装置，其包括接收机和控制器。 接收机在运行中接收第一功率余量（PHR），其通过从移动台的最大发射功率中减去数据信道的发射功率而获得，并从移动台发送，并接收第二PHR 通过从移动台的最大发送功率减去数据信道的发送功率和控制信道的发送功率而获得的，并且从移动台发送。 控制器在操作中选择性地设置由移动台执行的不同频带中的数据信道和控制信道的同时传输。 当数据信道和控制信道从移动台同时发送到不同的频带时，获得第二PHR并从移动台发送。
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公开(公告)号：US09112668B2
公开(公告)日：2015-08-18
申请号：US13926738
申请日：2013-06-25
Inventor： Seigo Nakao , Daichi Imamura , Katsuhiko Hiramatsu
CPC classification number: H04J11/005 , H04B1/713 , H04J13/0059 , H04J13/0074 , H04L5/0055 , H04L5/0057 , H04L5/0073 , H04W72/0413 , H04W72/042 , H04W88/08
Abstract: A radio communication device capable of randomizing both inter-cell interference and intra-cell interference. In this device, a spreading section primarily spreads a response signal in a ZAC sequence set by a control unit. A spreading section secondarily spreads the primarily spread response signal in a block-wise spreading code sequence set by the control unit. The control unit controls the cyclic shift amount of the ZAC sequence used for the primary spreading in the spreading section and the block-wise spreading code sequence used for the secondary spreading in the spreading section according to a set hopping pattern. The hopping pattern set by the control unit is made up of two hierarchies. An LB-based hopping pattern different for each cell is defined in the first hierarchy in order to randomize the inter-cell interference. A hopping pattern different for each mobile station is defined in the second hierarchy to randomize the intra-cell interference.
Abstract translation: 一种能够使小区间干扰和小区内干扰同时化的无线通信装置。 在该装置中，扩展部分主要在由控制单元设置的ZAC序列中扩展响应信号。 扩展部分以由控制单元设置的块式扩展码序列二次扩展主要扩展的响应信号。 控制单元根据设定的跳频图案控制在扩展部分中用于一次扩频的ZAC序列的循环移位量和用于扩展部分中的二次扩频的块式扩频码序列。 由控制单元设置的跳频图案由两层组成。 为了随机化小区间干扰，在第一层次中定义了每个小区不同的基于LB的跳频模式。 在第二层次中定义了针对每个移动站不同的跳频模式以随机化小区内干扰。
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公开(公告)号：US09112643B2
公开(公告)日：2015-08-18
申请号：US14455236
申请日：2014-08-08
Inventor： Zhi Zhang , Ming Xu , Masayuki Hoshino , Seigo Nakao , Daichi Imamura
CPC classification number: H04J13/004 , H04J13/0048 , H04J13/12 , H04J13/18 , H04L5/0007 , H04L5/0016 , H04L5/0026 , H04L5/0048 , H04L5/0051 , H04L5/0066 , H04L43/087
Abstract: The present disclosure provides an orthogonal codes based code division multiplexing method of performing the code division multiplexing of demodulation reference signals in multiple layers of resource blocks by using orthogonal matrices, the method comprising: changing the order of chips in particular rows of a first orthogonal matrix to obtain a second orthogonal matrix with the changed order of chips; and multiplying the chips in respective rows of the second orthogonal matrix by the demodulation reference signals in corresponding layers of resource blocks correspondingly in the time direction to obtain code division multiplexing signals. The technical scheme of the present disclosure can improve the power jitter situation of downlink signals on the time, thereby the usage efficiency of the power amplifier at the base station side can be improved.
Abstract translation: 本公开提供了一种基于正交码的码分复用方法，其通过使用正交矩阵来执行多层资源块中的解调参考信号的码分复用，所述方法包括：改变第一正交矩阵的特定行中的码片的顺序 以获得具有改变的码片顺序的第二正交矩阵; 并将第二正交矩阵的各行中的码片乘以相应于时间方向的资源块的相应层中的解调参考信号，以获得码分复用信号。 本公开的技术方案可以提高下行链路信号的功率抖动情况，从而可以提高基站侧的功率放大器的使用效率。
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Patent Agency Ranking
公开(公告)号：US09094065B2
公开(公告)日：2015-07-28
申请号：US14372440
申请日：2013-01-11
Inventor： Tomofumi Takata , Akihiko Nishio , Daichi Imamura , Takashi Iwai , Atsushi Matsumoto
CPC classification number: H04B7/0417 , H04B7/024 , H04B7/0452 , H04J13/0062 , H04J13/10 , H04J13/16 , H04L5/0035 , H04L5/0051 , H04L27/2613
Abstract: Provided is a transmission device with which, by orthogonalizing different transmission bandwidth DM-RSs, CoMP performance is improved, and it is possible to increase MU-MIMO communication multiplexing. In the device, a sequence generator unit (103) generates a reference signal of a number of transmission bandwidths which is less than a prescribed number using a first sequence which is used in a reference signal of a number of transmission bandwidths which is greater than or equal to the prescribed number when a coordinated receiving by a plurality of receiving devices is applied, and generates the reference signal of the number of transmission bandwidth which is less than the prescribed number using a second sequence which differs from the first sequence when the coordinated receiving is not applied. A transmission unit (112) transmits the reference signal.
Abstract translation: 提供一种发送装置，通过使不同的发送带宽DM-RS正交化，可以提高CoMP性能，并且可以增加MU-MIMO通信复用。 在该装置中，序列发生器单元（103）使用第一序列生成少于规定数量的传输带宽的参考信号，所述第一序列用于多个传输带宽的参考信号，所述参考信号大于或等于 当应用多个接收设备的协调接收时，等于规定数量，并且当协调接收时使用与第一序列不同的第二序列来生成小于规定数量的传输带宽数量的参考信号 不适用。 发送单元（112）发送参考信号。
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137.发明申请INTEGRATED CIRCUIT FOR CONTROLLING SELECTION OF RANDOM ACCESS PREAMBLE SEQUENCE 有权用于控制选择随机访问前缀序列的集成电路公开(公告)号：US20150200705A1
公开(公告)日：2015-07-16
申请号：US14637207
申请日：2015-03-03
Inventor： Daichi Imamura , Takashi Iwai , Kazunori Inogai , Sadaki Futagi , Atsushi Matsumoto
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.
Abstract translation: 一种序列分配方法和装置，其中在将多个不同的Zadoff-Chu序列或GCL序列分配给单个小区的系统中，可以减少接收端的相关电路的算术量和电路规模。 在ST201中，初始化当前序列分配的计数器（a）和数量（p），并且在ST202中，确定当前序列分配的数量（p）是否与一个分配的数量（K）一致 细胞。 在ST203中，确定对一个单元的分配的数量（K）是奇数还是偶数。 如果K是偶数，则在ST204-ST206中，组合然后分配未被分配的序列号（r = a和r = N-a）。 如果K是奇数，则在ST207-ST212中，对于不能配对的序列，分配未分配的序列号（r = a和r = N-a）中的一个。
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公开(公告)号：US09077595B2
公开(公告)日：2015-07-07
申请号：US14558565
申请日：2014-12-02
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.
Abstract translation: 提供了当在移动通信系统中使用ZC序列作为参考信号时，能够减少参考信号的小区间干扰的序列分配方法。 在序列分配方法中，将由ZC序列号r（r = 1〜R）和循环移位序列号m（m = 1〜M）指定的R×M序列划分为多个序列组X（X = 1到R），使得ZC序列被分配给每个序列组单元中的每个小区。 当假定R = 9且M = 6时，序列数为54.每个序列组由两个序列组成。 因此，序列组的数量为27.将27种类型的序列组分配给每个单元。
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公开(公告)号：US20150172944A1
公开(公告)日：2015-06-18
申请号：US14631694
申请日：2015-02-25
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：US09048972B2
公开(公告)日：2015-06-02
申请号：US14294762
申请日：2014-06-03
Inventor： Takashi Iwai , Daichi Imamura , Akihiko Nishio , Yoshihiko Ogawa , Masaru Fukuoka
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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