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1. 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。

2. 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

3. 发明专利

JP2014120988A Propagation characteristic estimation device, propagation characteristic estimation method, and propagation characteristic estimation program 审中-公开
标题翻译：传播特征估计装置，传播特征估计方法和传播特征估计方案
公开(公告)号：JP2014120988A
公开(公告)日：2014-06-30
申请号：JP2012275729
申请日：2012-12-18
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： YAMADA WATARU , SUGIYAMA TAKATOSHI , KITA NAOKI , SASAKI MOTOHARU
IPC分类号： H04B17/00
摘要： PROBLEM TO BE SOLVED: To provide a propagation characteristic estimation device capable of reducing a calculation load and saving memory capacity required for executing calculation while improving calculation accuracy of a propagation characteristic estimation value.SOLUTION: A propagation characteristic estimation device for estimating a propagation characteristic in a radio communication system comprises: a topographical database previously storing topographical data; a building database previously storing building data; profile creation means for creating a profile which adds height of a building to each position of the building between transmission and reception spots, by referring to topographical data stored in the topographical database and building data stored in the building database; diffraction loss calculation means for calculating a diffraction loss by referring to the profile; line-of-sight propagation loss calculation means for calculating a line-of-sight propagation loss; and propagation characteristic estimation means for calculating an estimation value of the propagation characteristic on the basis of the diffraction loss and line-of-sight propagation loss.
摘要翻译：要解决的问题：提供一种传播特性估计装置，其能够降低计算负荷并节省执行计算所需的存储容量，同时提高传播特性估计值的计算精度。解决方案：传播特性估计装置，用于估计传播特性估计值无线电通信系统包括：先前存储地形数据的地形数据; 以前存储建筑物数据的建筑数据库; 简档创建装置，用于通过参考存储在地形数据库中的地形数据和构建存储在建筑物数据库中的数据来创建将建筑物的高度添加到建筑物的每个位置的发送和接收点之间的配置文件; 衍射损耗计算装置，用于通过参考轮廓来计算衍射损耗; 视线传播损失计算装置，用于计算视线传播损耗; 以及传播特性估计装置，用于基于衍射损耗和视线传播损耗来计算传播特性的估计值。

4. 发明专利

JP2013026884A Propagation loss estimation method and program and propagation loss estimation device 审中-公开
标题翻译：传播损失估计方法和程序和传播损失估计装置
公开(公告)号：JP2013026884A
公开(公告)日：2013-02-04
申请号：JP2011160751
申请日：2011-07-22
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： SASAKI MOTOHARU , YAMADA WATARU , ITO TOSHIO , KITA NAOKI , SUGIYAMA TAKATOSHI
IPC分类号： H04B17/00 , H04W24/00
摘要： PROBLEM TO BE SOLVED: To cut down calculation amounts needed for estimating propagation losses in propagation paths above buildings.SOLUTION: Among buildings located on a straight line between a transmitter and a receiver, a building closest to the transmitter and a building closest to the receiver are determined. Then, a wall surface closest to the transmitter among the wall surfaces of the building closest to the transmitter and a wall surface closest to the receiver among the wall surfaces of the building closest to the receiver are determined. On the assumption that at the positions of the two wall surfaces there exist edges having the heights of the respective buildings, a first propagation loss in paths above the buildings from the transmitter to the receiver is estimated on the basis of a double knife edge diffraction loss model.
摘要翻译：要解决的问题：减少估计建筑物以上传播路径传播损耗所需的计算量。解决方案：在位于发射机和接收机之间的直线上的建筑物中，确定最靠近发射机的建筑物和最接近接收机的建筑物。然后，确定最靠近发射器的建筑物的墙壁表面中最接近发射器的壁表面和最靠近接收器的建筑物的壁表面中最接近接收器的壁表面。假设在两个壁面的位置存在具有各个建筑物的高度的边缘的情况下，基于双刀刃衍射损耗来估计建筑物上的从发射器到接收器的路径中的第一传播损耗模型。版权所有（C）2013，JPO＆INPIT

5. 发明专利

JP2014158110A Propagation characteristic estimation device and propagation characteristic estimation method 有权
标题翻译：传播特征估计装置和传播特征估计方法
公开(公告)号：JP2014158110A
公开(公告)日：2014-08-28
申请号：JP2013027055
申请日：2013-02-14
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： YAMADA WATARU , SUGIYAMA TAKATOSHI , KITA NAOKI , SASAKI MOTOHARU
IPC分类号： H04B17/00
摘要： PROBLEM TO BE SOLVED: To provide a propagation characteristic estimation device capable of improving accuracy of an estimate of obtained propagation loss.SOLUTION: A propagation characteristic estimation device for estimating a propagation characteristic in a radio communication system comprises: a topographical database in which topographical data is stored in advance; propagation path setting means for defining a plurality of square planes whose one side is a line segment connecting a transmission point and reception point around the line segment, defining a topographical profile along topography between the transmission point and reception point based on topographical data on each of the plurality of defined planes, and setting a propagation path to each defined topographical profile; propagation loss calculation means for calculating propagation loss for each propagation path; and propagation loss output means for outputting a propagation loss value between the transmission point and reception point, on the basis of the propagation loss calculated for each propagation path.
摘要翻译：要解决的问题：提供能够提高所获得的传播损耗的估计精度的传播特性估计装置。解决方案：一种用于估计无线电通信系统中的传播特性的传播特性估计装置，包括：地形数据库，其中地形数据预先存放; 传播路径设定装置，用于定义多个方形平面，其一侧是连接发送点和线段周围的接收点的线段，基于每个发送点和接收点之间的拓扑数据，定义沿着发送点和接收点之间的地形的形貌分布所述多个限定平面，并且设置到每个定义的地形轮廓的传播路径; 用于计算每个传播路径的传播损耗的传播损耗计算装置; 以及传播损失输出装置，用于基于为每个传播路径计算的传播损耗，在传输点和接收点之间输出传播损耗值。

6. 发明专利

JP2014155182A Receiver and channel estimation method 有权
标题翻译：接收和信道估计方法
公开(公告)号：JP2014155182A
公开(公告)日：2014-08-25
申请号：JP2013025927
申请日：2013-02-13
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： YAMADA WATARU , SUGIYAMA TAKATOSHI , KITA NAOKI , SASAKI MOTOHARU
IPC分类号： H04B7/005 , H04J11/00 , H04L27/01
摘要： PROBLEM TO BE SOLVED: To provide a receiver for receiving a signal addressed to it by utilizing a channel state predicted before receiving the signal addressed to the receiver.SOLUTION: A filter 13 of a receiver 1 removes, from a received signal, a signal out of a frequency bandwidth used by the receiver, and an AD converter 15 converts the signal having passed through the filter 13 from an analog signal to a digital signal. A channel prediction circuit 16 predicts a channel state from a known signal received before the signal addressed to the receiver is received and included in a signal addressed to another receiver which was converted by the AD converter 15, and the predicted channel state is corrected according to a channel state estimated from a known signal included in the signal addressed to the receiver which was converted by the AD converter 15. A demodulation circuit 17 demodulates the signal addressed to the receiver which was converted by the AD converter 15 by using channel information obtained from the corrected channel state.
摘要翻译：要解决的问题：提供接收器，用于通过利用在接收到寻址到接收机的信号之前预测的信道状态来接收寻址到它的信号。解码：接收机1的滤波器13从接收信号中去除信号的接收机使用的频率带宽，并且AD转换器15将已经通过滤波器13的信号从模拟信号转换为数字信号。信道预测电路16在接收到寻址到接收机的信号之前从已知信号中预测信道状态，并将其包含在寻址到由AD转换器15转换的另一个接收机的信号中，并根据从由AD转换器15转换的寻址到接收机的信号中包括的已知信号估计的信道状态。解调电路17通过使用从AD转换器15获得的信道信息来解调由AD转换器15转换的寻址到接收机的信号校正后的通道状态。

7. 发明专利

JP2014120990A Propagation characteristic estimation device, propagation characteristic estimation method, and propagation characteristic estimation program 有权
标题翻译：传播特征估计装置，传播特征估计方法和传播特征估计方案
公开(公告)号：JP2014120990A
公开(公告)日：2014-06-30
申请号：JP2012275734
申请日：2012-12-18
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： YAMADA WATARU , SUGIYAMA TAKATOSHI , KITA NAOKI , SASAKI MOTOHARU
IPC分类号： H04B17/00 , G01R29/08
摘要： PROBLEM TO BE SOLVED: To provide a propagation characteristic estimation device capable of improving calculation accuracy of a propagation characteristic estimation value in a radio communication system.SOLUTION: A propagation characteristic estimation device for estimating a propagation characteristic in a radio communication system comprises: a topographical database; a building database; a land utilization distribution database; profile creation means for creating a profile which adds height of a building to each position of the building between transmission and reception spots and adds predetermined clutter height to each position other than the position of the building, by referring to topographical data, building data, clutter height data based on land utilization distribution data; diffraction loss calculation means for calculating a diffraction loss by referring to the profile; line-of-sight propagation loss calculation means for calculating a line-of-sight propagation loss; surrounding building additional loss calculation means for calculating an additional loss by surrounding buildings; and propagation characteristic estimation means for calculating an estimation value of the propagation characteristic on the basis of the diffraction loss, line-of-sight propagation loss, and additional loss by surrounding buildings.
摘要翻译：要解决的问题：提供能够提高无线通信系统中的传播特性估计值的计算精度的传播特性估计装置。解决方案：一种用于估计无线电通信系统中的传播特性的传播特性估计装置，包括：地形学数据库; 建筑数据库; 土地利用分配数据库; 简档创建装置，用于创建一个轮廓，该轮廓将建筑物的高度增加到发射和接收点之间的建筑物的每个位置，并且通过参考地形数据，建筑物数据，杂波来增加除了建筑物的位置之外的每个位置的预定杂波高度基于土地利用分布数据的高度数据; 衍射损耗计算装置，用于通过参考轮廓来计算衍射损耗; 视线传播损失计算装置，用于计算视线传播损耗; 周边建筑物附加损失计算方法，用于计算周围建筑物的额外损失; 以及传播特性估计装置，用于基于衍射损耗，视距传播损耗和周围建筑物的额外损耗来计算传播特性的估计值。

8. 发明专利

JP2013009175A Propagation loss estimation method, program, and propagation loss estimation device 审中-公开
标题翻译：传播损失估计方法，程序和传播损失估计装置
公开(公告)号：JP2013009175A
公开(公告)日：2013-01-10
申请号：JP2011140812
申请日：2011-06-24
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： SASAKI MOTOHARU , YAMADA WATARU , KITA NAOKI , SUGIYAMA TAKATOSHI
IPC分类号： H04B17/00 , H04W16/18
摘要： PROBLEM TO BE SOLVED: To enhance estimation accuracy of a propagation loss.SOLUTION: A position of a transmitter on a map and a position of a receiver on the map are obtained, whether the receiver is positioned at a position which can be reached from the position of the transmitter without turning at a branch point is determined on the basis of the map information, and if the position of the receiver can be reached from the position of the transmitter without turning at a branch point, whether the position of the receiver can be directly observed linearly from the position of the transmitter is determined on the basis of the map information, and the propagation loss is calculated by using different formulas respectively corresponding to the case that the position of the receiver can be directly observed linearly from the position of the transmitter and the case that the position of the receiver cannot be directly observed linearly from the position of the transmitter.
摘要翻译：要解决的问题：提高传播损耗的估计精度。解决方案：无论接收机是否位于可以从发射机的位置到达而不在分支点转动的位置，都可以获得发射机在地图上的位置和地图上的接收机的位置。基于地图信息确定，并且如果能够从发射机的位置到达分支点的位置，则可以从发射机的位置直接观察接收机的位置是否直接观察，根据地图信息确定传播损耗，并且通过分别对应于从发射机的位置直接观察接收机的位置和接收机的位置的情况的不同的公式来计算传播损耗不能直接从发射机的位置线性观测。版权所有（C）2013，JPO＆INPIT

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