公开(公告)号：EP2782378B1

公开(公告)日：2019-05-08

申请号：EP14171364.4

申请日：2010-12-02

申请人： NTT DoCoMo, Inc.

发明人： Fujii, Hiromasa ,  Asai, Takahiro ,  Ohya, Tomoyuki

IPC分类号： H04W16/14

公开(公告)号：EP2445152A2

公开(公告)日：2012-04-25

申请号：EP11185415.4

申请日：2011-10-17

申请人： NTT DoCoMo, Inc.

发明人： Harada, Hiroki ,  Fujii, Hiromasa ,  Miura, Shunji

IPC分类号： H04L27/00

CPC分类号： H04L27/0006 ,  H04L5/0007 ,  H04L5/0032

摘要： A signal detection apparatus includes: a unit configured to select a particular detection target signal from among plural candidates of detection target signals; a unit configured to calculate a cyclic autocorrelation value at a center coordinate point specified by at least a cyclic parameter and a shift parameter of the particular detection target signal; a unit configured to calculate a cyclic autocorrelation value of each of (L-1) coordinate points belonging to a common area that is used commonly for different detection target signals; a unit configured to calculate a test statistic of the particular detection target signal; and a unit configured to determine presence or absence of the particular detection target signal according to a comparison result between the test statistic and a threshold, wherein the test statistic is calculated by using the cyclic autocorrelation value in each of the (L-1) coordinate points belonging to the common area.

摘要翻译： 信号检测装置包括：被配置为从检测目标信号的多个候选中选择特定检测目标信号的单元; 被配置为计算由所述特定检测目标信号的至少循环参数和移位参数指定的中心坐标点处的循环自相关值; 被配置为计算属于公共区域的（L-1）坐标点中的每一个的循环自相关值的单元，其被共同用于不同的检测目标信号; 被配置为计算特定检测目标信号的检验统计量的单元; 以及单元，被配置为根据所述测试统计量和阈值之间的比较结果来确定所述特定检测目标信号的存在或不存在，其中通过使用（L-1）坐标中的每一个中的循环自相关值来计算所述检验统计量 点属于公共区域。

公开(公告)号：EP2372842A2

公开(公告)日：2011-10-05

申请号：EP11158999.0

申请日：2011-03-21

申请人： NTT DoCoMo, Inc.

发明人： Fujii, Hiromasa ,  Ohya, Tomoyuki

IPC分类号： H01Q19/10

CPC分类号： H01Q19/10 ,  H01Q19/104

摘要： A reflector apparatus 20 includes a reflector 201 configured to reflect a directional beam transmitted from an array antenna of a radio base station 10 to the reflector apparatus, a signal receiving unit 211 configured to receive a training signal transmitted from the radio base station 10, a weight generating unit 212 configured to generate an optimum weight of the directional beam transmitted from the radio base station 10 based on the training signal reception result by the signal receiving unit 211 and a control signal transmitting unit 214 configured to transmit weight information indicating the optimum weight generated by the weight generating unit 212 to the radio base station 10.

摘要翻译： 反射器装置20包括被配置为将从无线电基站10的阵列天线发送的定向波束反射到反射器装置的反射器201，被配置为接收从无线电基站10发送的训练信号的信号接收单元211， 权重生成单元212，其基于信号接收单元211的训练信号接收结果和控制信号发送单元214，生成从无线基站10发送的定向波束的最佳权重，该控制信号发送单元214被配置为发送表示最佳权重的权重信息 由权重生成单元212生成到无线基站10。

公开(公告)号：EP2343842A2

公开(公告)日：2011-07-13

申请号：EP10252193.7

申请日：2010-12-22

申请人： NTT DOCOMO, INC.

发明人： Harada, Hiroki ,  Fujii, Hiromasa ,  Miura, Shunji ,  Tomoyuki, Ohya

IPC分类号： H04B17/00 ,  H04W16/14

CPC分类号： H04B7/086 ,  H04B17/26 ,  H04B17/309 ,  H04B17/382

摘要： A signal detection apparatus 23 for determining whether a detection target signal is included in a received radio signal, includes: a waveform feature amount calculation unit 31 configured to calculate a waveform feature amount R x α representing a waveform feature; a test statistic calculation unit 32 configured to calculate test statistic Z x α of each detection target signal by using the waveform feature amount; and a signal decision unit 33 configured to determine presence or absence of each detection target signal by comparing the test statistic Z x α of each detection target signal with a threshold r, wherein, under a condition where a specific detection target signal is removed, the test statistic calculation unit calculates a test statistic for a detection target signal which is not removed, and the signal decision unit determines presence or absence of the detection target signal by comparing the calculated test statistic with the threshold.

摘要翻译： 一种用于确定检测目标信号是否包括在接收的无线电信号中的信号检测装置23包括：波形特征量计算单元31，被配置为计算表示波形特征的波形特征量R x±; 测试统计量计算单元32，用于通过使用波形特征量来计算每个检测目标信号的检验统计量Z x±; 以及信号判定单元33，被配置为通过将每个检测目标信号的检验统计量Z x±与阈值r进行比较来确定每个检测目标信号的存在或不存在，其中在去除特定检测目标信号的条件下， 测试统计量计算单元计算未被去除的检测目标信号的检验统计量，并且信号判定单元通过将计算的检验统计量与阈值进行比较来确定检测目标信号的存在与否。

公开(公告)号：EP1233565A3

公开(公告)日：2003-05-21

申请号：EP02003795.8

申请日：2002-02-20

申请人： NTT DoCoMo, Inc.

发明人： Abe, Tetsushi ,  Fujii, Hiromasa ,  Tomisato, Shigeru ,  Matsumoto, Tadashi

IPC分类号： H04L1/00 ,  H03M13/29

CPC分类号： H04L25/0236 ,  H04L1/005 ,  H04L25/0204

摘要： An impluse response h mn (q) of each transmission path is estimated from N received signals r m (m=1, ···, M) and a known signal (for a number of users equal to N, n=1, ···, N). M×N matrix H (q) having h mn (q) as an element and a Q×Q matrix H having H (q) as an element are determined (where Q represents a number of multipaths of each transmitted wave and q=0, ···, Q-1). A soft decision value b' n (k) is determined from decoded λ 2 [b n (k)], and this is used to generate an interference component matrix B' (k) to generate an interference replica H·B' (k). The interference replica H·B' (k) is subtracted from a received matrix y (k) to determine y' (k). y (k) and H are used to determine an adaptive filter coefficient w n (k) to be applied to an n-th user in order to eliminate residual interference components in y' (k) according to the minimum mean square error criteria. y (k) is passed through w n (k) to provide a log-likelihood ratio as a received signal from the user n from which interferences are eliminated.

公开(公告)号：EP2490500B1

公开(公告)日：2018-11-21

申请号：EP12153027.3

申请日：2012-01-30

申请人： NTT DoCoMo, Inc.

发明人： Harada, Hiroki ,  Fujii, Hiromasa ,  Miura, Shunji ,  Kayama, Hidetoshi

IPC分类号： H04W72/08 ,  H04W16/14 ,  H04W72/04 ,  H04W72/12

CPC分类号： H04W72/082 ,  H04W16/14 ,  H04W72/0406 ,  H04W72/085 ,  H04W72/1215

摘要： A wireless station in a second communication system, with at least a portion of a first frequency band used in a first communication system and a portion of a second frequency band used in the second communication system being shared or neighboring, the wireless station including a waveform characteristic quantity extracting unit that extracts a waveform characteristic quantity which shows a statistical characteristic of a signal received from the first communication system; a communication parameter determining unit that determines communication parameters to be used for the wireless station in the second communication system depending on a determination result of whether the extracted waveform characteristic quantity is of a predetermined waveform characteristic quantity for reducing an interference; and a transmission and reception unit that transmits and receives a wireless communication signal in the second communication system in accordance with the determined communication parameters.

公开(公告)号：EP2475209B1

公开(公告)日：2016-07-20

申请号：EP11194931.9

申请日：2011-12-21

申请人： NTT DoCoMo, Inc.

发明人： Fujii, Hiromasa ,  Yasuda, Hiroto ,  Harada, Hiroki ,  Miura, Shunji ,  Ohya, Tomoyuki

IPC分类号： H04W72/04 ,  H04W16/32 ,  H04W92/20

CPC分类号： H04W72/0406 ,  H04W16/32 ,  H04W92/20

公开(公告)号：EP2330860B1

公开(公告)日：2014-10-29

申请号：EP10193449.5

申请日：2010-12-02

申请人： NTT DoCoMo, Inc.

发明人： Fujii, Hiromasa ,  Asai, Takahiro ,  Ohya, Tomoyuki

IPC分类号： H04W74/08

CPC分类号： H04W16/14 ,  H04W74/0816 ,  H04W84/12

公开(公告)号：EP1538762B1

公开(公告)日：2013-04-03

申请号：EP04027963.0

申请日：2004-11-25

申请人： NTT DoCoMo, Inc.

发明人： Suda, Hirohito ,  Asai, Takahiro ,  Fujii, Hiromasa ,  Tanaka, Tetsu

IPC分类号： H04B7/155

CPC分类号： H04B7/15564

公开(公告)号：EP1965546A3

公开(公告)日：2013-01-02

申请号：EP08003681.7

申请日：2008-02-28

申请人： NTT DoCoMo, Inc.

发明人： Fujii, Hiromasa ,  Hagiwara, Junichiro ,  Yoshino, Hitoshi

IPC分类号： H04L12/28 ,  H04Q7/38

CPC分类号： H04W16/14 ,  H04W4/02 ,  H04W48/16

摘要： The present invention has an object of providing a transmitter apparatus, a mobile communication system, a base station and a communication enable signal transmitter unit, which can prioritize communications of a mobile station in a priority communication system over communications of a mobile station in a non-priority communication system, in a network where the priority communication system and the non-priority communication system coexist in the same communication area.
The non-priority communication transmitter apparatuses 10B and 30B comprise signal transmitter units 16 and 17 configured to be enabled to transmit, to the non-priority communication receiver apparatuses 10B and 30B, a signal by using a frequency channel of a second frequency band, when the non-priority communication transmitter apparatuses 10B and 30B receive a communication enable signal from a priority communication system or when the non-priority communication transmitter apparatuses 10B and 3DB detect that the non-priority communication transmitter apparatuses 10B and 30B has received the communication enable signal.