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21. 发明专利

JP2005140617A Positioning method, positioning system, and radio base station 有权
标题翻译：定位方法，定位系统和无线电基站
公开(公告)号：JP2005140617A
公开(公告)日：2005-06-02
申请号：JP2003376797
申请日：2003-11-06
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： MIZUGAKI KENICHI , ODAKA TOSHIYUKI , MASUI SHOICHI
IPC分类号： G01S5/06 , H04B7/26 , H04W64/00 , H04Q7/34
CPC分类号： H04W64/00
摘要： PROBLEM TO BE SOLVED: To reduce a size of a node, and to attain a low electric power consumption. SOLUTION: The node 01 is provided with a function for transmitting a radio signal (positioning signal) 05 for measuring a position. A reference station 02 is provided with a function for transmitting a radio signal (reference signal) 06 for determining a reference time after receiving the signal from the node 01. Each access point (AP) 03 is provided with a function for measuring reception times of the positioning signal 05 transmitted from the node 01 and the reference signal 06 transmitted from the reference station 02. A position calculation server 04 is provided with a database (not shown in Fig.) including information about coordinates of the each access point 03 and a distance from the each access point 03 to the reference station 02, and is connected to the each access point 03 via a network 08. The position calculation server 04 calculates a position of the node 01, using a measured result acquired from the each access point 03 via the network 08, and the information included in the database. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了减小节点的尺寸并获得低的电力消耗。解决方案：节点01具有用于发送用于测量位置的无线电信号（定位信号）05的功能。参考站02具有用于在从节点01接收到信号之后发送用于确定参考时间的无线电信号（参考信号）06的功能。每个接入点（AP）03被提供用于测量接收时间从节点01发送的定位信号05和从参考站02发送的参考信号06.位置计算服务器04设置有数据库（图中未示出），包括关于每个接入点03和从每个接入点03到参考站02的距离，并且经由网络0 0连接到每个接入点03.位置计算服务器04使用从每个接入点获取的测量结果来计算节点01的位置 03通过网络08以及数据库中包含的信息。版权所有（C）2005，JPO＆NCIPI

22. 发明专利

JP2003207556A TERMINAL AND SERVER DEVICE IN TERMINAL POSITION INFORMATION SYSTEM 审中-公开
公开(公告)号：JP2003207556A
公开(公告)日：2003-07-25
申请号：JP2002002930
申请日：2002-01-10
申请人： HITACHI LTD
发明人： MIZUGAKI KENICHI , OGINO ATSUSHI , SUZUKI HIDEYA
IPC分类号： G01C21/00 , G01C21/20 , G01S5/10 , G01S19/34 , G08G1/005 , H04W64/00 , H04Q7/34
摘要： PROBLEM TO BE SOLVED: To solve the problems that a terminal having a conventional position detection function is designed so as to always detect the terminal position with high accuracy and does not have a function for intentionally adjusting the positioning accuracy, and that consequently a function can not be realized, wherein power consumption is suppressed by reducing a terminal load by using a position detection method for suppressing the positioning accuracy in the range wherein an error included in terminal position information does not influence the service information to be provided, in a position information system for providing a service corresponding to the terminal position. SOLUTION: A server for providing information on the service designates the positioning accuracy to the terminal according to the content of a requested service. The terminal changes the position detection method according to the set positioning accuracy. Hereby, since the positioning accuracy is automatically changed according to the content of the requested service, the terminal load can be reduced and the power consumption can be reduced. COPYRIGHT: (C)2003,JPO

23. 发明专利

JP2003028944A Position-measuring system and position calculating method 有权
标题翻译：位置测量系统和位置计算方法
公开(公告)号：JP2003028944A
公开(公告)日：2003-01-29
申请号：JP2001216127
申请日：2001-07-17
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： MIZUGAKI KENICHI , KUWABARA MIKIO , SUZUKI HIDEYA
IPC分类号： G01S5/14
摘要： PROBLEM TO BE SOLVED: To solve the problem of the accuracy of position calculation deteriorating, when base stations are arranged at positions treated as situated on the same straight line on a suburban expressway or the like, and when only signals from the base stations can be received in a position measuring system which measures the position of a terminal by using a base station for a portable telephone.
SOLUTION: When the base stations are arranged at the positions treated as situated on the same straight line, the position calculation method, in which the position of the terminal is found on the straight line is used. When a signal is received from a base station which is not situated on the straight line, normal position calculation method is used.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：为了解决位置计算的精度劣化的问题，当基站被布置在位于郊区高速公路等上处于相同直线上的位置时，并且当仅来自基站的信号可以是接收在位置测量系统中，该位置测量系统通过使用便携式电话的基站来测量终端的位置。解决方案：当基站被布置在位于相同直线处理的位置时，使用其中在直线上找到终端位置的位置计算方法。当从不在直线上的基站接收到信号时，使用正常位置计算方法。

24. 发明专利

JP2013030871A Wireless communication system and wireless relay station 审中-公开
标题翻译：无线通信系统和无线中继站
公开(公告)号：JP2013030871A
公开(公告)日：2013-02-07
申请号：JP2011164017
申请日：2011-07-27
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SERIZAWA YASUTAKA , MIZUGAKI KENICHI , MIYAZAKI MASAYUKI
IPC分类号： H04W52/02 , H04W84/18
CPC分类号： H04W52/0219 , H04B7/15542 , H04W84/18 , Y02D70/00 , Y02D70/144 , Y02D70/22 , Y02D70/446
摘要： PROBLEM TO BE SOLVED: To solve the problem that a wireless relay station cannot autonomously change communication paths when a difference in remaining battery charges arises among wireless relay stations in an ad hoc wireless communication system.SOLUTION: A wireless relay station which operates intermittently changes the intermittent operation interval according to situations in wireless relay station's own determination in a multi-hop wireless network via a plurality of wireless relay stations.
摘要翻译：要解决的问题：为了解决当在自组织无线通信系统中的无线中继站之间出现剩余电池电量的差异时无线中继站不能自主地改变通信路径的问题。解决方案：根据无线中继站自己在多跳无线网络中通过多个无线中继站的确定的情况间歇地间歇地改变间歇操作间隔的无线中继站。版权所有（C）2013，JPO＆INPIT

25. 发明专利

JP2012147090A Radio communication system, base station and server 审中-公开
标题翻译：无线电通信系统，基站和服务器
公开(公告)号：JP2012147090A
公开(公告)日：2012-08-02
申请号：JP2011001994
申请日：2011-01-07
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： MIZUGAKI KENICHI , KOKUBO MASARU , MIYAZAKI MASAYUKI
IPC分类号： H04W88/02 , H04W84/18
摘要： PROBLEM TO BE SOLVED: To change communication parameters without affecting the entire system when an ad hoc wireless network encounters a communication disturbance.SOLUTION: A terminal includes a communication unit which communicates with another terminal or base station using communication parameters and a disturbance determination unit which, when abnormality in communication is found, transmits a first signal to the base station. The base station includes a path information storage unit which holds path information indicating terminals on a communication path to and from each terminal, a communication path information storage unit which holds communication parameters used by each terminal, and an alteration determination unit which, when the first signal is received from a first terminal, extracts based on the path information a second terminal from terminals communicating with the base station via a terminal on the communication path to and from the first terminal. The alteration determination unit determines a third terminal whose communication parameters are to be altered and its altered communication parameter value based on communication path information received from the second terminal and communication parameters, and transmits the altered communication parameter value to the third terminal.
摘要翻译：要解决的问题：当自组织无线网络遇到通信干扰时，改变通信参数而不影响整个系统。解决方案：终端包括通信单元，其使用通信参数与另一个终端或基站进行通信;以及干扰确定单元，当发现通信异常时，向基站发送第一信号。基站包括路径信息存储单元，该路径信息存储单元保存与每个终端的通信路径上的终端的路径信息，保存各终端使用的通信参数的通信路径信息存储单元，以及变更确定单元，从第一终端接收信号，经由通往第一终端的通信路径上的终端从与基站通信的终端，基于路径信息提取第二终端。变更确定单元基于从第二终端接收的通信路径信息和通信参数来确定要更改其通信参数的第三终端及其更改的通信参数值，并将改变的通信参数值发送到第三终端。版权所有（C）2012，JPO＆INPIT

26. 发明专利

JP2012129805A Radio network system and radio communication system 有权
标题翻译：无线网络系统和无线电通信系统
公开(公告)号：JP2012129805A
公开(公告)日：2012-07-05
申请号：JP2010279604
申请日：2010-12-15
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： MIYAZAKI MASAYUKI , MIZUGAKI KENICHI , KOKUBO MASARU , NAGAISHI HIDEYUKI , KOBAYASHI NOBUHISA
IPC分类号： H04W4/04 , G08C15/00 , G08C17/00 , H04M3/00 , H04Q9/00 , H04W24/10 , H04W84/18
CPC分类号： H04W28/06 , H04L1/0002 , H04L1/0014 , H04L43/00 , H04L67/12 , H04L69/04 , H04L2001/0097 , H04W4/006 , H04W24/10 , H04W84/18
摘要： PROBLEM TO BE SOLVED: To reduce power consumption without degrading communication performance in a multi-hop radio network to improve the communication reliability and stability.SOLUTION: A radio communication system comprises: a sensor processing part to create sensor data including measurement results by a sensor; a communication measurement part to create communication quality data including a communication state to transmit packets; a compression determination part to determine a compression ratio of the first sensor data and the first communication quality data in accordance with the first sensor data content including the transmitted sensor data and the created sensor data, or the first communication quality data content including the transmitted sensor data and the created communication quality data; a compression part to compress the first sensor data and the first communication quality data by using the determined compression ratio; and a radio communication part to transmit packets including the compressed first sensor data and first communication quality data to other radio communication devices or base stations.
摘要翻译：要解决的问题：为了降低功耗而不降低多跳无线电网络中的通信性能，以提高通信的可靠性和稳定性。解决方案：无线电通信系统包括：传感器处理部分，用于产生包括传感器的测量结果的传感器数据; 通信测量部分，用于创建包括传送分组的通信状态的通信质量数据; 压缩判定部，根据包含发送的传感器数据和所生成的传感器数据的第一传感器数据内容，或包含发送的传感器的第一通信质量数据内容，确定第一传感器数据和第一通信质量数据的压缩比数据和创建的通信质量数据; 压缩部件，通过使用所确定的压缩比来压缩第一传感器数据和第一通信质量数据; 以及无线电通信部分，用于将包括压缩的第一传感器数据和第一通信质量数据的分组发送到其他无线电通信设备或基站。版权所有（C）2012，JPO＆INPIT

27. 发明专利

JP2012004891A Radio communication control device, radio transceiver and radio communication system using the same 审中-公开
标题翻译：无线电通信控制设备，无线电收发器和使用该无线电通信系统的无线电通信系统
公开(公告)号：JP2012004891A
公开(公告)日：2012-01-05
申请号：JP2010138422
申请日：2010-06-17
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： MIZUGAKI KENICHI , KOKUBO MASARU , MIYAZAKI SUKEYUKI
IPC分类号： H04W40/22 , H04W84/22
CPC分类号： H04L45/42 , H04W40/12 , Y02D70/00 , Y02D70/142 , Y02D70/162 , Y02D70/166 , Y02D70/22 , Y02D70/34
摘要： PROBLEM TO BE SOLVED: To provide a highly-reliable radio communication in an ad-hoc radio communication system even in a case where large-scale failure occurs to affect the whole wireless communication system used.SOLUTION: A terminal 100, an access point 200 and relay stations (300A to 300C) each have a plurality of radio systems installed therein, and notify a coordinator 400 for determining a communication path in a network of communication path information 500 obtained by measuring conditions of communication paths around themselves respectively. The coordinator 400 grasping the communication path status sets a plurality of routes by the plurality of radio systems between the terminal 100 and the access point 200, and instructs the respective relay sections which radio system is used in each relay section for communication. The respective relay stations (300A to 300C) transmit measurement data 503 according to the instructions.
摘要翻译：要解决的问题：即使在发生大规模故障以影响所使用的整个无线通信系统的情况下，也可以在自组织无线电通信系统中提供高度可靠的无线电通信。解决方案：终端100，接入点200和中继站（300A至300C）各自具有安装在其中的多个无线电系统，并通知协调器400以确定获得的通信路径信息500的网络中的通信路径通过分别测量其周围的通信路径的条件。掌握通信路径状态的协调器400通过终端100和接入点200之间的多个无线电系统设置多个路由，并且指示各个中继部分在每个中继部分中使用哪个无线电系统进行通信。各个中继站（300A〜300C）根据指示发送测量数据503。版权所有（C）2012，JPO＆INPIT

28. 发明专利

JP2008096326A Positioning system 有权
标题翻译：定位系统
公开(公告)号：JP2008096326A
公开(公告)日：2008-04-24
申请号：JP2006279448
申请日：2006-10-13
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： MIZUGAKI KENICHI , NAKAGAWA SHIGEO , FUJIWARA RYOSUKE
IPC分类号： G01S5/06 , H04B7/26 , H04W64/00 , H04W84/18
CPC分类号： H04W84/18 , H04W64/00 , Y02D70/00
摘要： PROBLEM TO BE SOLVED: To perform high-accuracy time difference measurements with a small-sized and low-cost device of low power consumption, in a system that measures the arrival time difference of signals and performs positioning. SOLUTION: The system includes a node (to be subjected to positioning) transmitting a positioning signal, a reference station transmitting a reference signal, at least three base stations receiving the positioning signal and the reference signal, and a server connected to the base stations via a network. In the system, the plurality of base stations measure the difference between the time the positioning signal which is received, and the time the reference signal is received and the frequency deviation from the reference station, by using the clock signal and signal causing the clock signal to change and determine whether to perform correction for the measurement time difference, on the basis of the measured result of the frequency deviation; and the server calculates the position of the node, on the basis of the frequency time difference in which proper processing is performed. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：在测量信号的到达时间差并执行定位的系统中，通过低功耗的小型和低成本设备来执行高精度的时差测量。解决方案：系统包括发送定位信号的节点（发送定位信号的基站），发送参考信号的参考站，接收定位信号的至少三个基站和参考信号，以及连接到基站通过网络。在该系统中，多个基站通过使用引起时钟信号的时钟信号和信号来测量接收到的定位信号的时间与接收到的参考信号的时间与来自参考站的频率偏差之间的差异基于频率偏差的测量结果来改变和确定是否对测量时间差进行校正; 并且服务器基于执行适当处理的频率时间差来计算节点的位置。版权所有（C）2008，JPO＆INPIT

29. 发明专利

JP2008076188A Wireless positioning system and wireless device 有权
标题翻译：无线定位系统和无线设备
公开(公告)号：JP2008076188A
公开(公告)日：2008-04-03
申请号：JP2006254823
申请日：2006-09-20
申请人： Hitachi Ltd , Yokosuka Telecom Research Park:Kk , 株式会社日立製作所 , 株式会社横須賀テレコムリサーチパーク
发明人： MAEKI AKIRA , OGATA YUJI , SAKAMURA TAKESHI , MOROKUMA TATESHI , MIYAZAKI SUKEYUKI , MIZUGAKI KENICHI
IPC分类号： G01S5/06 , G01S5/12 , G01S5/14 , H01Q1/24 , H01Q3/24 , H04W64/00
摘要： PROBLEM TO BE SOLVED: To provide a wireless positioning system enabling positioning over a wide range, independently of the directivities of the antennae.
SOLUTION: A terminal to be positioned includes the antennae ANTa and ANTb arranged symmetrically, and the anisotropies of radiation patterns of the two antennas are symmetric. The terminal to be positioned transmits a first positioning packet from the antenna ANTa. When the first positioning packet is received by only base stations B and C, the information on the received time difference between the base stations B-C is found. Successively, the terminal to be positioned transmits a second positioning packet from the antenna ANTb. Data of the second positioning packet store information on the transmission time difference between the first positioning packet and the first positioning packet. When the base station A receives the second positioning packet, the time the first positioning packet will probably have reached the base station A is calculated from the information on the difference between the received time and the transmitted time of the second positioning packet. Information on the time difference received between the base stations A-B is also found. The position of the terminal to be positioned can be specified, based on the two time differences received.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种无线定位系统，其能够在广泛的范围内进行定位，而与天线的方向性无关。解决方案：要定位的终端包括对称布置的天线ANTa和ANTb，并且两个天线的辐射图的各向异性是对称的。要定位的终端从天线ANTa发送第一定位分组。当第一定位分组仅由基站B和C接收时，找到关于基站B-C之间接收的时间差的信息。接下来，待定位终端从天线ANTb发送第二定位分组。第二定位分组的数据存储关于第一定位分组和第一定位分组之间的传输时间差的信息。当基站A接收到第二定位分组时，根据接收到的时间与第二定位分组的发送时间之间的差异的信息来计算第一定位分组可能已经到达基站A的时间。还找到关于在基站A-B之间接收的时间差的信息。可以根据接收到的两个时间差来指定要定位的终端的位置。版权所有（C）2008，JPO＆INPIT

30. 发明专利

JP2007248362A Terminal positioning system and position measuring method 审中-公开
标题翻译：终端定位系统和位置测量方法
公开(公告)号：JP2007248362A
公开(公告)日：2007-09-27
申请号：JP2006074616
申请日：2006-03-17
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： FUJIWARA RYOSUKE , MIYAZAKI SUKEYUKI , MIZUGAKI KENICHI
IPC分类号： G01S5/06 , H04W64/00 , H04W88/08
CPC分类号： G01S5/0289 , G01S5/0205 , G01S5/0221 , G01S5/0226 , G01S5/14 , H04W64/00 , H04W88/08
摘要： PROBLEM TO BE SOLVED: To provide a position measuring system capable of performing easily initial introduction, maintenance and system expansion.
SOLUTION: This terminal positioning system equipped with base stations to the number of at least (N+1) (wherein N=1 to 3) and a positioning server, for determining the position on N-dimensional coordinates of a terminal performing radio communication is described as follows: each distance between the base stations to the number of at least (N+1) is calculated; a relative coordinate of each base station is determined; the determined relative coordinate is evaluated; switching to terminal positioning processing for determining the terminal position is determined; and the terminal position is determined by using a propagation time of a radio signal transmitted/received between the terminal and the base station and the determined relative coordinate between the base stations.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供能够容易地进行初始引入，维护和系统扩展的位置测量系统。解决方案：该终端定位系统配备有至少（N + 1）个数量（其中N = 1至3）的基站和定位服务器，用于确定执行的终端的N维坐标上的位置无线电通信描述如下：基站之间的距离至少为（N + 1）的数量被计算; 确定每个基站的相对坐标; 评估确定的相对坐标; 确定切换到用于确定终端位置的终端定位处理; 并且通过使用在终端和基站之间发送/接收的无线电信号的传播时间和所确定的基站之间的相对坐标来确定终端位置。版权所有（C）2007，JPO＆INPIT

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