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1. 发明授权

US06671649B2 Position calculation method and position calculation apparatus 失效
公开(公告)号：US06671649B2
公开(公告)日：2003-12-30
申请号：US10390721
申请日：2003-03-19
申请人： Mikio Kuwahara , Tomoaki Ishifuji , Takashi Yano , Kenzaburo Fujishima
发明人： Mikio Kuwahara , Tomoaki Ishifuji , Takashi Yano , Kenzaburo Fujishima
IPC分类号： G01C1700
CPC分类号： G01S5/14
摘要： A position calculation method that calculates the correct position of a terminal even when errors are not distributed symmetrically for positive and negative values, by calculating the position of a terminal using the delay time of received signals. The method calculates a first range that is a difference between a range from the terminal to each of antenna and a range from the terminal to a base antenna, the range being calculated from a wireless signal delay time; calculates a second range that is a difference between a range from an assumed terminal position for calculation to each antenna and a range from the assumed terminal position for calculation to the base antenna; calculates a likelihood of the position of the terminal, repeats these procedures to obtain a point where the likelihood is maximized, and determines an obtained most likely solution as the position of the terminal.

2. 发明授权

US06556943B2 Position calculation method and position calculation apparatus 有权
公开(公告)号：US06556943B2
公开(公告)日：2003-04-29
申请号：US09918641
申请日：2001-08-01
申请人： Mikio Kuwahara , Tomoaki Ishifuji , Takashi Yano , Kenzaburo Fujishima
发明人： Mikio Kuwahara , Tomoaki Ishifuji , Takashi Yano , Kenzaburo Fujishima
IPC分类号： H04Q720
CPC分类号： G01S5/14
摘要： A position calculation method that calculates the correct position of a terminal even when errors are not distributed symmetrically for positive and negative values, by calculating the position of a terminal using the delay time of received signals. The method calculates a first range that is a difference between a range from the terminal to each of antenna and a range from the terminal to a base antenna, the range being calculated from a wireless signal delay time; calculates a second range that is a difference between a range from an assumed terminal position for calculation to each antenna and a range from the assumed terminal position for calculation to the base antenna; calculates a likelihood of the position of the terminal, repeats these procedures to obtain a point where the likelihood is maximized, and determines an obtained most likely solution as the position of the terminal.

3. 发明授权

US06889051B2 Method and apparatus for measuring transmitting time offset of a base station 失效
标题翻译：用于测量基站的发射时间偏移的方法和装置
公开(公告)号：US06889051B2
公开(公告)日：2005-05-03
申请号：US10046509
申请日：2002-01-16
申请人： Atsushi Ogino , Mikio Kuwahara , Tomoaki Ishifuji , Kenzaburo Fujishima
发明人： Atsushi Ogino , Mikio Kuwahara , Tomoaki Ishifuji , Kenzaburo Fujishima
IPC分类号： G01S5/10 , G01S19/14 , H04B7/08 , H04B7/155 , H04B7/26 , H04W56/00 , H04W64/00 , H04W88/02 , H04Q7/20
CPC分类号： G01S5/10 , G01S5/02 , G01S5/021 , G01S19/235
摘要： An offset measuring method according to the present invention accurately measures a transmitting time offset of a base station. The offset measuring method for receiving signals from the radio base station and measuring the transmitting time offset of the radio base station includes the steps of calculating estimated values of transmitting time offset based on signals received at a plurality of observation points and selecting a minimum from the estimated offsets to determine the selected minimum value as transmitting time offset of the radio base station.
摘要翻译：根据本发明的偏移测量方法精确地测量基站的发射时间偏移。用于从无线电基站接收信号并测量无线电基站的发送时间偏移的偏移测量方法包括以下步骤：基于在多个观测点处接收到的信号来计算发送时间偏移的估计值，并从将所选择的最小值确定为无线电基站的发射时间偏移的估计偏移量。

4. 发明授权

US08891390B2 Wireless base station for controlling antenna transmission power 有权
标题翻译：用于控制天线发射功率的无线基站
公开(公告)号：US08891390B2
公开(公告)日：2014-11-18
申请号：US13308672
申请日：2011-12-01
申请人： Hajime Kanzaki , Kenzaburo Fujishima , Mikio Kuwahara , Katsuhiko Tsunehara
发明人： Hajime Kanzaki , Kenzaburo Fujishima , Mikio Kuwahara , Katsuhiko Tsunehara
IPC分类号： H04L12/26 , H04B17/00 , H04B7/06 , H04B7/04
CPC分类号： H04B17/005 , H04B7/0426 , H04B7/068 , H04B17/24 , H04B17/345
摘要： Provided is a wireless communication system which includes a wireless communication unit using plural frequency bands and plural antennas. The system changes the transmission power of each antenna, based on the interference of each of the frequency bands from the neighbor base station along the antenna direction. The system estimates the number of antennas necessary for transmission in response to a user requirement, and determines a necessary antenna in accordance with the antenna direction in which the terminal is located, and further changes the transmission power of each antenna.
摘要翻译：提供一种无线通信系统，其包括使用多个频带的无线通信单元和多个天线。该系统基于来自相邻基站的每个频带的干扰沿天线方向改变每个天线的发射功率。系统根据用户要求估计发送所需的天线数量，根据终端所在的天线方向确定必要的天线，进一步改变各天线的发送功率。

5. 发明申请

US20120140658A1 WIRELESS BASE STATION FOR CONTROLLING ANTENNA TRANSMISSION POWER 有权
标题翻译：无线基站控制天线传输功率
公开(公告)号：US20120140658A1
公开(公告)日：2012-06-07
申请号：US13308672
申请日：2011-12-01
申请人： Hajime KANZAKI , Kenzaburo Fujishima , Mikio Kuwahara , Katsuhiko Tsunehara
发明人： Hajime KANZAKI , Kenzaburo Fujishima , Mikio Kuwahara , Katsuhiko Tsunehara
IPC分类号： H04W52/16 , H04W24/00
CPC分类号： H04B17/005 , H04B7/0426 , H04B7/068 , H04B17/24 , H04B17/345
摘要： Provided is a wireless communication system which includes a wireless communication unit using plural frequency bands and plural antennas. The system changes the transmission power of each antenna, based on the interference of each of the frequency bands from the neighbor base station along the antenna direction. The system estimates the number of antennas necessary for transmission in response to a user requirement, and determines a necessary antenna in accordance with the antenna direction in which the terminal is located, and further changes the transmission power of each antenna.
摘要翻译：提供一种无线通信系统，其包括使用多个频带的无线通信单元和多个天线。该系统基于来自相邻基站的每个频带的干扰沿天线方向改变每个天线的发射功率。系统根据用户要求估计发送所需的天线数量，根据终端所在的天线方向确定必要的天线，进一步改变各天线的发送功率。

6. 发明申请

US20110038249A1 TIMING ADJUSTMENT METHOD, RECEIVING STATION, AND TRANSMITTING STATION IN WIRELESS COMMUNICATION SYSTEM, AND WIRELESS COMMUNICATION SYSTEM 有权
标题翻译：无线通信系统中的时序调整方法，接收站和发送站，无线通信系统
公开(公告)号：US20110038249A1
公开(公告)日：2011-02-17
申请号：US12867407
申请日：2009-02-16
申请人： Satoshi Tamaki , Mikio Kuwahara , Kenzaburo Fujishima , Pinai Linwong , Katsuhiko Tsunehara
发明人： Satoshi Tamaki , Mikio Kuwahara , Kenzaburo Fujishima , Pinai Linwong , Katsuhiko Tsunehara
IPC分类号： H04W24/00 , H04J11/00
CPC分类号： H04L27/2675 , H04L27/2613 , H04L27/2655 , H04W56/00
摘要： A discontinuous change in a transmission timing in a time domain, which is caused by a transmission timing adjustment processing of an OFDMA uplink or the like, brings about a discontinuous rotation of a signal phase in a frequency domain, resulting in reduced communication quality. A wireless communication system of the present invention allows the signal phase of the frequency domain in a receiving station to be continuous before and after the timing adjustment processings by controlling a signal sequence in a transmission signal after conversion in the time domain in synchronization with the timing adjustment processing.
摘要翻译：由OFDMA上行链路等的发送定时调整处理引起的时域中的发送定时的不连续变化导致频域中的信号相位的不连续旋转，导致通信质量降低。本发明的无线通信系统允许接收站中的频域的信号相位在定时调整处理之前和之后是连续的，通过在与定时同步的时域中的时域中的转换之后控制发送信号中的发送信号中的信号序列调整处理。

7. 发明申请

US20100157930A1 WIRELESS COMMUNICATION METHOD WITH PACKET SCHEDULING 有权
标题翻译：具有分组调度的无线通信方法
公开(公告)号：US20100157930A1
公开(公告)日：2010-06-24
申请号：US12717419
申请日：2010-03-04
申请人： Mikio KUWAHARA , Kenzaburo Fujishima , Masanori Taira
发明人： Mikio KUWAHARA , Kenzaburo Fujishima , Masanori Taira
IPC分类号： H04W72/12
CPC分类号： H04W72/1284 , H04L5/0005 , H04W52/0216 , H04W72/1231 , Y02D70/00
摘要： To reduce power consumption of a mobile station, this invention provides a wireless communication method for communicating between a base station and a plurality of terminals using a plurality of channels, the channels being slots obtained by dividing frequency-divided carriers by time, in which the base station allocates a set of the channels which is composed of a plurality of neighboring carriers and/or a plurality of successive slots for the each terminal, and the base station allocates at least one of the channels included in the channel sets for packet transmission the terminals.
摘要翻译：为了降低移动台的功率消耗，本发明提供了一种用于使用多个信道在基站与多个终端之间通信的无线通信方法，所述信道是通过按时间划分分频载波而获得的时隙，其中基站为每个终端分配由多个相邻载波和/或多个连续时隙组成的信道集合，并且基站分配包括在信道集中的信道中的至少一个用于分组传输终端。

8. 发明申请

US20130005403A1 RADIO COMMUNICATION SYSTEM, RADIO COMMUNICATION METHOD, BASE STATION DEVICE AND TERMINAL DEVICE 有权
标题翻译：无线电通信系统，无线电通信方法，基站设备和终端设备
公开(公告)号：US20130005403A1
公开(公告)日：2013-01-03
申请号：US13528284
申请日：2012-06-20
申请人： MIKIO KUWAHARA , Kenzaburo Fujishima , Yunjian Jia
发明人： MIKIO KUWAHARA , Kenzaburo Fujishima , Yunjian Jia
IPC分类号： H04W88/00
CPC分类号： H04W48/10 , H04B7/0608 , H04B7/0814 , H04W88/085
摘要： A base station broadcasts a message saying that transmittable ranging codes are limited by antenna IDs to limit antennas and the ranging codes to be searched, thereby reducing a processing load of the search. In a cellular radio communication system in which a base station device is connected to plural antennas, and antenna IDs for identifying the antennas are transmitted from the respective antennas, the base station device broadcasts a message saying that a group of ranging codes transmittable by a terminal device is limited by the antenna IDs, the terminal device receives the message, identifies the antenna ID, selects the ranging code from the group of the ranging codes corresponding to the antenna ID, and transmits the selected ranging code.
摘要翻译：基站广播消息，表示可发射测距码由天线ID限制，以限制天线和待搜索的测距码，从而减少搜索的处理负担。在基站装置连接到多个天线的蜂窝无线通信系统中，从各天线发送用于识别天线的天线ID，基站装置广播一个消息，表示可以由终端发送的测距码组设备被天线ID限制，终端设备接收消息，识别天线ID，从对应于天线ID的测距码组中选择测距码，并发送所选择的测距码。

9. 发明申请

US20120121045A1 MIMO RECEIVING METHOD 审中-公开
标题翻译： MIMO接收方法
公开(公告)号：US20120121045A1
公开(公告)日：2012-05-17
申请号：US13148156
申请日：2009-03-12
申请人： Mikio Kuwahara , Kenzaburo Fujishima
发明人： Mikio Kuwahara , Kenzaburo Fujishima
IPC分类号： H04L27/06
CPC分类号： H04B7/0413 , H04B7/0854 , H04L5/0023
摘要： To provide a space multiplex signal detection circuit capable of obtaining an excellent error rate characteristic by suppressing an increase in the circuit scale if when a modulation multivalued number is particularly increased in the case of receiving a signal subjected to space multiplexing to detect the signal. SOLUTION: A transmission signal candidate narrow-down circuit 108 refers to a proximity signal point data table 109 and stepwise narrows down the number of a plurality of transmission signal candidates to a prescribed number of the candidates. The proximity signal point data table 109 stores the cross-reference between signal points closer on a transmission constellation to signal points of transmission signals of each of transmission systems estimated by a transmission signal estimate circuit 107. A maximum likelihood estimate circuit 113 receives candidates of the transmission signal sequences and metrics corresponding to the candidates and outputs a transmission signal sequence whose metric value is least as a final transmission signal sequence.
摘要翻译：为了提供一种空间复用信号检测电路，能够通过抑制电路规模的增加而获得优异的误码率特性，如果在接收到经过空间复用的信号检测信号的情况下调制多值数量特别增加。解决方案：发送信号候选窄降低电路108参考接近信号点数据表109，并且将多个发送信号候选的数量逐步变窄到规定数量的候选。接近信号点数据表109存储传输星座附近的信号点与发送信号估计电路107估计的每个发送系统的发送信号的信号点之间的交叉参考。最大似然估计电路113接收发送信号序列和对应于候选的度量，并且输出其度量值最小的发送信号序列作为最终发送信号序列。

10. 发明授权

US08000745B2 Radio communication method and radio base transmission station 有权
公开(公告)号：US08000745B2
公开(公告)日：2011-08-16
申请号：US11702648
申请日：2007-02-06
申请人： Mikio Kuwahara , Kenzaburo Fujishima , Masanori Taira
发明人： Mikio Kuwahara , Kenzaburo Fujishima , Masanori Taira
IPC分类号： H04M1/00 , H04B1/00 , H04B15/00
CPC分类号： H01Q1/246 , H01Q25/00
摘要： An antenna pattern assigning method capable of avoiding interference between a plurality of base transmission stations constituting a radio system in a cellular type broad band communication. In the radio system, when assigning a fixed beam pattern different for each frequency, each of the radio base transmission station devices transmits a radio wave having a directivity pattern having a peak in the same direction in two or more different frequencies, and between adjacent radio base transmission station devices, radio transmission is performed by using different directivity patterns in the two or more frequencies.

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