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1. 发明专利

JP2014006851A Radio wave propagation characteristic estimation device, radio wave propagation characteristic estimation method, and radio wave propagation characteristic estimation program 审中-公开
标题翻译：无线电波传播特征估计装置，无线电波传播特性估计方法和无线电波传播特性估计方案
公开(公告)号：JP2014006851A
公开(公告)日：2014-01-16
申请号：JP2012144100
申请日：2012-06-27
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社 , Hokkaido Univ , 国立大学法人北海道大学
发明人： YAMADA WATARU , SUGIYAMA TAKATOSHI , NOJIMA TOSHIO , HIKAGE TAKASHI
IPC分类号： G06F17/14 , G06F19/00
摘要： PROBLEM TO BE SOLVED: To reduce a data storage area on a calculator and a calculation processing load when radio wave propagation characteristics are estimated using electromagnetic field simulation.SOLUTION: A radio wave propagation characteristic estimation device which estimates radio wave propagation characteristics by performing electromagnetic field simulation using FDTD method, includes: storage means for storing electric field component data and magnetic field component data in a time domain of an analytical space obtained by the electromagnetic field simulation using the FDTD method; sequence creation means for creating a complex number sequence in which the electric field component data is applied to either one of a real part and an imaginary part and the magnetic field component data is applied to the other one of them; FFT calculation means for executing fast Fourier transform calculation using the complex number sequence as input; and frequency domain data calculation means for obtaining the electric field component data in the frequency domain and the magnetic field component data in the frequency domain from the result obtained by executing the fast Fourier transform calculation, taking advantage of characteristics of fast Fourier transform calculation.
摘要翻译：要解决的问题：当使用电磁场模拟来估计无线电波传播特性时，减少计算器上的数据存储区域和计算处理负荷。解决方案：一种通过执行电磁场来估计无线电波传播特性的无线电波传播特性估计装置使用FDTD方法的模拟包括：通过使用FDTD方法的电磁场模拟获得的分析空间的时域中存储电场分量数据和磁场分量数据的存储装置; 序列创建装置，用于创建其中电场分量数据被应用于实部和虚部中的任一个的复数序列，并且磁场分量数据被施加到其中的另一个; FFT计算装置，用于使用复数序列作为输入执行快速傅里叶变换计算; 以及频域数据计算装置，利用快速傅里叶变换计算的特征，从通过执行快速傅里叶变换计算获得的结果中获得频域中的电场分量数据和频域中的磁场分量数据。

2. 发明专利

JP2015022693A 解析方法、解析装置、及び解析プログラム审中-公开
标题翻译：分析方法，分析仪和分析程序
公开(公告)号：JP2015022693A
公开(公告)日：2015-02-02
申请号：JP2013152633
申请日：2013-07-23
申请人：日本電信電話株式会社 , Nippon Telegr & Teleph Corp , 国立大学法人北海道大学 , Hokkaido Univ
发明人： SASAKI MOTOHARU , YAMADA WATARU , SUGIYAMA TAKATOSHI , NOJIMA TOSHIO , HIKAGE TAKASHI
IPC分类号： G06F19/00 , G06F17/16 , G06F17/50
摘要：【課題】FDTD法における使用メモリを削減する。【解決手段】解析空間を複数のセルに分割し、解析空間内の電磁界をFDTD法で解析する解析方法において、セル毎の媒質の誘電率を誘電率の実数値よりもメモリ使用量の少ない記憶形態で記憶する。この記憶形態は、媒質の種類に対応するインデックス値であって、FDTD法の計算において、インデックス値で記憶された誘電率をインデックス値に対応する実数値に置き換えて用いる。または、この記憶形態は、媒質の種類に応じて割り当てられた文字変数であって、FDTD法の計算結果を示す数式における文字変数に、文字変数に対応する誘電率の実数値を代入する。【選択図】図1
摘要翻译：要解决的问题：减少FDTD方法中的使用记忆。解决方案：分析空间分为多个单元，分析空间中的电磁场通过FDTD方法进行分析。在分析方法中，每个单元的介质的介电常数以使用存储量小于介电常数的存储形式存储。存储形式是对应于介质种类的索引值。在通过FDTD方法的计算中，通过用与索引值对应的实数替换来使用由索引值存储的介电常数。或者，存储形式是根据介质的种类分配的字符变量。对应于字符变量的介电常数的实数代替FDTD方法的计算结果的数学公式中的字符变量。

3. 发明专利

JP2012242361A Arrival time estimation device, computer program, and arrival time estimation method 有权
标题翻译：到达时间估计装置，计算机程序和到达时间估计方法
公开(公告)号：JP2012242361A
公开(公告)日：2012-12-10
申请号：JP2011116068
申请日：2011-05-24
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社 , Hokkaido Univ , 国立大学法人北海道大学
发明人： YAMADA WATARU , SUGIYAMA TAKATOSHI , NOJIMA TOSHIO , HIKAGE TAKASHI
IPC分类号： G01R29/08
摘要： PROBLEM TO BE SOLVED: To accurately estimate the arrival time of an electromagnetic wave having a temporal expanse.SOLUTION: An arrival time estimation method includes: simulating a temporal response of an electric field and a magnetic field at a predetermined reception position when an electromagnetic wave is transmitted from a predetermined transmission position in an analysis space where any article reflecting or absorbing the electromagnetic wave does not exist in a propagation path of the electromagnetic wave; simulating likewise the temporal response in an analysis space where the article exists in the propagation path of the electromagnetic wave; and estimating a time when the electromagnetic wave has arrived at the reception position based on the temporal response of the electric field obtained in the both simulations, estimating likewise a time based on the temporal response of the magnetic field, and finally estimating an arrival time based on the two estimation results.
摘要翻译：要解决的问题：准确估计具有颞叶的电磁波的到达时间。解决方案：一种到达时间估计方法包括：当在反射或吸收的任何物品的分析空间中从预定的透射位置传输电磁波时，模拟预定接收位置处的电场和磁场的时间响应电磁波不存在于电磁波的传播路径中; 同时模拟物品存在于电磁波传播路径中的分析空间中的时间响应; 并且基于在两个模拟中获得的电场的时间响应来估计电磁波已经到达接收位置的时间，基于磁场的时间响应同时估计时间，并且最后基于估计到达时间对两个估计结果。版权所有（C）2013，JPO＆INPIT

4. 发明专利

JP2012244590A Arrival direction estimation device, arrival direction estimation method, and arrival direction estimation program 有权
标题翻译：到达方向估计装置，到达方向估计方法和到达方向估计方案
公开(公告)号：JP2012244590A
公开(公告)日：2012-12-10
申请号：JP2011116069
申请日：2011-05-24
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社 , Hokkaido Univ , 国立大学法人北海道大学
发明人： YAMADA WATARU , SUGIYAMA TAKATOSHI , NOJIMA TOSHIO , HIKAGE TAKASHI
IPC分类号： H04B17/00 , G01R29/08
摘要： PROBLEM TO BE SOLVED: To improve estimation precision of an arrival direction of an electromagnetic wave at a reception position.SOLUTION: The arrival direction estimation device includes a propagation path response calculation part which simulates electric fields and time responses of the magnetic fields at the reception position and a plurality of reception points provided at a predetermined distance from the reception position when the electromagnetic wave is transmitted from a predetermined transmission position; an electric field arrival direction calculation part which calculates the direction in which the electromagnetic wave arrives at the reception position using the time responses of electric field intensity included in simulation results; a magnetic field arrival direction calculation part which calculates the direction in which the electromagnetic wave arrives at the reception position using the time responses of magnetic field intensity included in the simulation results; and an arrival direction selection part which determines the direction in which the electromagnetic wave arrives at the reception position by comparing the direction calculated by the electric field arrival direction calculation part and the direction calculated by the magnetic field arrival direction calculation part with each other.
摘要翻译：要解决的问题：提高接收位置处的电磁波到达方向的估计精度。解决方案：到达方向估计装置包括：传播路径响应计算部，其模拟在接收位置处的磁场的电场和时间响应;以及多个接收点，当接收位置处电磁波从预定的发送位置发送; 使用包含在模拟结果中的电场强度的时间响应来计算电磁波到达接收位置的方向的电场到达方向计算部; 磁场到达方向计算部，其使用包含在模拟结果中的磁场强度的时间响应来计算电磁波到达接收位置的方向; 以及到达方向选择部，其通过将由电场到达方向计算部计算的方向与由磁场到达方向计算部计算出的方向进行比较来确定电磁波到达接收位置的方向。版权所有（C）2013，JPO＆INPIT

5. 发明专利

JP2012003546A Analysis method and analysis device 有权
标题翻译：分析方法与分析装置
公开(公告)号：JP2012003546A
公开(公告)日：2012-01-05
申请号：JP2010138530
申请日：2010-06-17
申请人： Hokkaido Univ , Nippon Telegr & Teleph Corp , 国立大学法人北海道大学 , 日本電信電話株式会社
发明人： YAMADA WATARU , SUGIYAMA TAKATOSHI , NOJIMA TOSHIO , HIKAGE TAKASHI
IPC分类号： G06F17/50 , G01R29/08 , G01R29/10
摘要： PROBLEM TO BE SOLVED: To provide an analysis method and an analysis device capable of improving the convergence of analysis based on an electromagnetic field in a space where multiple reflection occurs, and of reducing a calculation time to be spent on analysis.SOLUTION: The analysis method includes: a first electromagnetic field component calculation process in which first electromagnetic field component calculation parts (5, 7, 9, 11) calculate the value of an electromagnetic field in an analytic space by an FDTD method by using the value of an electromagnetic field at a junction between an antenna and a virtual circuit part among the values of the electromagnetic field calculated by a second electromagnetic field component calculation process; and the second electromagnetic field component calculation process in which second electromagnetic field component calculation parts (6, 8, 10, 12) calculate the value of the electromagnetic field in the virtual circuit part by the FDTD method synchronously with the first electromagnetic field component calculation process by using the value of the junction between the antenna and the analytic space among the values of the electromagnetic field calculated by the first electromagnetic field component calculation process.
摘要翻译：要解决的问题：提供一种分析方法和分析装置，其能够基于多次反射的空间中的电磁场来提高分析的收敛性，并且减少在分析上花费的计算时间。解决方案：分析方法包括：第一电磁场分量计算处理，其中第一电磁场分量计算部分（5,7,9,11）通过FDTD方法通过FDTD方法计算分析空间中的电磁场的值使用通过第二电磁场分量计算处理计算的电磁场的值之间的天线和虚拟电路部分之间的结点处的电磁场的值; 以及第二电磁场分量计算处理，其中第二电磁场分量计算部分（6,8,10,12）与第一电磁场分量计算过程同步地通过FDTD方法计算虚拟电路部分中的电磁场的值通过使用由第一电磁场分量计算处理计算的电磁场的值之间的天线与分析空间之间的连接点的值。版权所有（C）2012，JPO＆INPIT

6. 发明专利

JP2010045703A Radio communication system, receiving terminal, radio communication method, and receiving method 有权
标题翻译：无线电通信系统，接收终端，无线电通信方法和接收方法
公开(公告)号：JP2010045703A
公开(公告)日：2010-02-25
申请号：JP2008209610
申请日：2008-08-18
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： OTSUKI NOBUAKI , ASAI YUSUKE , YAMADA WATARU , SUGIYAMA TAKATOSHI
IPC分类号： H04W28/04 , H04L1/00 , H04W88/04
摘要： PROBLEM TO BE SOLVED: To provide a radio communication system and a receiving terminal, to which network encoding which improves a communication quality by utilizing a multi-addressing nature of radio communication is applied.
SOLUTION: A radio communication system 1 is configured to include receiving terminals 10a, 10b, a relay terminal 20, and transmitting terminals 30a, 30b. The transmitting terminals 30a, 30b modulate bit signals memorized respectively therein and transmit them to the relay terminal 20. The receiving terminals 10a, 10b receive and demodulate the modulated signals to be transmitted to the relay terminal and performs timely reception for memorizing them as bitwise likelihood signals a, b. The receiving terminals 10a, 10b improve the communication quality by signal synthesis with the bitwise likelihood signals a, b memorized by the timely reception when receiving and demodulating the network-encoded modulated signal from the relay terminal 20. The receiving terminals 10a, 10b obtain a desired signal by error-correcting and decoding the signal synthsized.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种无线电通信系统和接收终端，通过利用无线电通信的多寻址性质来应用通过哪个网络编码提高通信质量的问题。解决方案：无线电通信系统1被配置为包括接收终端10a，10b，中继终端20和发送终端30a，30b。发送端子30a，30b对分别存储的比特信号进行调制，并将它们发送到中继终端20.接收终端10a，10b接收并解调要发送到中继终端的调制信号，并且及时接收，将其记忆为按位似然信号a，b。接收终端10a，10b在接收并解调来自中继终端20的网络编码调制信号时，通过及时接收存储的逐位似然信号a，b，通过信号合成提高通信质量。接收终端10a，10b获得通过纠错和解码合成信号的所需信号。版权所有（C）2010，JPO＆INPIT

7. 发明专利

JP2006279946A Broadband antenna device 有权
标题翻译：宽带天线设备
公开(公告)号：JP2006279946A
公开(公告)日：2006-10-12
申请号：JP2006058250
申请日：2006-03-03
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： ANDOU ATSUYA , YAMADA WATARU , KITA NAOKI
IPC分类号： H01Q9/28 , H01Q1/36 , H01Q1/46
摘要： PROBLEM TO BE SOLVED: To provide a broadband antenna device that achieves size reduction while keeping original broadband characteristics provided in a discone antenna by simple means.
SOLUTION: A broadband antenna device has a disk-like metal conductor, a cone-like metal conductor, and a coaxial line, in which an outer conductor of the coaxial line is electrically connected to the cone-like metal conductor at a top of the cone-like metal conductor, and an inner conductor of the coaxial line is electrically connected to the disk-like metal conductor; or the inner conductor of the coaxial line is electrically connected to the cone-like metal conductor, and the outer conductor of the coaxial line is electrically connected to the disk-like metal conductor. In the device, the cone-like metal conductor has such a shape that part of an opening is cut out in a side face of a cone or an oblique cone formed by obliquely cutting a right cone, the opening being not in a single plane.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种通过简单的手段保持提供在discone天线中的原始宽带特性来实现尺寸减小的宽带天线装置。解决方案：宽带天线装置具有盘状金属导体，锥形金属导体和同轴线，其中同轴线的外导体在锥形金属导体上电连接到锥形金属导体锥形金属导体的顶部和同轴线的内部导体电连接到盘状金属导体; 或者同轴线的内导体与锥形金属导体电连接，同轴线的外导体与盘状金属导体电连接。在该装置中，锥形金属导体具有这样的形状，即，通过倾斜切割右锥体而形成的锥体或斜锥体的侧面中的一部分开口被切割，该开口不在单个平面中。版权所有（C）2007，JPO＆INPIT

8. 发明专利

JP2005236755A Polarization shared antenna device 有权
标题翻译：极化共享天线设备
公开(公告)号：JP2005236755A
公开(公告)日：2005-09-02
申请号：JP2004044471
申请日：2004-02-20
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： ANDOU ATSUYA , KITA NAOKI , YAMADA WATARU , ITOKAWA KIYOHIKO , SATO AKIO
IPC分类号： H01Q21/24 , H01Q9/28 , H01Q13/12 , H01Q21/28
摘要： PROBLEM TO BE SOLVED: To provide a polarization shared antenna device whose diameter is almost equal to that of a cylindrical slot antenna that operates by a horizontally polarized wave by making a small-sized discone antenna that has a disc and a conical conductor and operates by a vertically polarized wave.
SOLUTION: A cylindrical conductor is electrically connected to the conical conductor at an opening part of the conical conductor of the discone antenna.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了提供一种极化共享天线装置，其直径几乎等于通过水平偏振波操作的圆柱形缝隙天线的直径，通过制造具有盘和锥形导体的小尺寸的盘状天线并通过垂直极化波进行操作。
解决方案：圆锥形导体在圆锥形导体的锥形导体的开口部分电连接到圆锥形导体。版权所有（C）2005，JPO＆NCIPI

9. 发明专利

JP2011234091A Station establishment design method, station establishment design device, and station establishment design program 有权
标题翻译：站台设计方法，站台设计设计和站台设计方案
公开(公告)号：JP2011234091A
公开(公告)日：2011-11-17
申请号：JP2010102134
申请日：2010-04-27
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： SASAKI MOTOHARU , YAMADA WATARU , SUGIYAMA TAKATOSHI
IPC分类号： H04W16/18
摘要： PROBLEM TO BE SOLVED: To provide a station establishment design method, a station establishment design device, and a station establishment design program capable of calculating a location to place a base station where a propagation loss becomes minimum without increasing a calculation amount in station establishment design for defining a location to place a base station.SOLUTION: A station establishment design device 100 includes: a candidate setting part 110 for defining location candidates to place a base station in an area showing the placement of a building; an area division part 120 for dividing the area into a plurality of meshes; an area calculation part 130 for calculating an integrated value of the area of the mesh defined on the basis of a positional relation among the candidate, the building and the respective centers of the meshes; a candidate extraction part 140 for extracting high order candidates in accordance with the integrated value; a propagation loss calculation part 150 for calculating a propagation loss of a radio wave for every high order candidate; a propagation loss determination part 160 for determining whether or not the propagation loss is below a threshold; and a location selection part 170 for selecting a candidate in which the integrated value of the area of the mesh showing the propagation loss below the threshold is the largest.
摘要翻译：要解决的问题：提供一种站建立设计方法，站建立设计设备和站建立设计程序，其能够计算放置传播损耗最小的基站的位置，而不增加计算量用于定义放置基站的位置的站建立设计。解决方案：站点设计设备100包括：候选设置部分110，用于定义位置候选以将基站放置在示出建筑物的放置的区域中; 区域划分部分120，用于将区域划分成多个网格; 区域计算部分130，用于计算基于候选人，建筑物和网格的各个中心之间的位置关系定义的网格的区域的积分值; 候选提取部分140，用于根据积分值提取高阶候选; 用于计算每个高阶候选的无线电波的传播损耗的传播损耗计算部分150; 用于确定传播损耗是否低于阈值的传播损耗确定部分160; 以及选择其中表示传播损耗低于阈值的网格区域的积分值最大的候选的位置选择部分170。版权所有（C）2012，JPO＆INPIT

10. 发明专利

JP2010011349A Relay wireless communication system, and transfer function estimation method 有权
标题翻译：中继无线通信系统和传输函数估计方法
公开(公告)号：JP2010011349A
公开(公告)日：2010-01-14
申请号：JP2008171192
申请日：2008-06-30
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： YAMADA WATARU , ASAI YUSUKE , OTSUKI NOBUAKI , SUGIYAMA TAKATOSHI , ICHIKAWA TAKEO , MIZOGUCHI MASATO
IPC分类号： H04B7/15 , H04J1/00 , H04J11/00
摘要： PROBLEM TO BE SOLVED: To provide a relay wireless communication system wherein a transmission station and a destination station can acquire a transfer function for each propagation path between the transmission station and the destination station in a short time, and a transfer function estimation method. SOLUTION: In time slots T1-T3, a transmission station radio apparatus Tx, a destination station radio apparatus Rx and a relay station radio apparatus R1 transmit prescribed training signals, and calculate the transfer function of a route between the present apparatus and the other radio apparatus on the basis of reception signals from the other radio apparatus and the training signals. In a time slot T4, the relay station radio apparatus R1 transmits a transfer function notifying signal for notifying the calculated transfer function. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种中继无线通信系统，其中发送站和目的地站可以在短时间内为发送站和目的地站之间的每个传播路径获取传递函数，并且传递函数估计方法。解决方案：在时隙T1-T3中，发送站无线电设备Tx，目的站无线电设备Rx和中继站无线电设备R1发送规定的训练信号，并计算本设备与基于来自其他无线电设备的接收信号和训练信号的另一个无线电设备。在时隙T4中，中继站无线装置R1发送用于通知计算出的传递函数的传递函数通知信号。版权所有（C）2010，JPO＆INPIT

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