公开(公告)号：US07149548B2

公开(公告)日：2006-12-12

申请号：US10365486

申请日：2003-02-13

Applicant: Shinichi Mori ,  Tetsuro Imai

Inventor： Shinichi Mori ,  Tetsuro Imai

IPC: H04M1/00

CPC classification number: H01Q3/02 ,  H01Q1/246 ,  H01Q3/20 ,  H01Q15/18 ,  H01Q19/106 ,  H01Q25/00 ,  H04W16/24

Abstract: An antenna apparatus is installed in a base station in a code division multiple access communication system. The antenna apparatus comprises a plurality of antenna elements, each receiving a radio signal; a controller that produces an antenna control signal based on information contained in the radio signal received at each of the antenna elements; an adjusting unit that adjusts directivity characteristics of each of the antenna elements based on the antenna control signal; and an allocating unit that allocates the antenna elements to sectors based on the antenna control signal. The sector covers a portion of a cell controlled by the base station, and the number of sectors in the cell is variable by means of the antenna control signal.

Abstract translation: 天线装置安装在码分多址通信系统的基站中。 天线装置包括多个天线元件，每个天线元件接收无线电信号; 控制器，其基于在每个天线元件处接收的无线电信号中包含的信息产生天线控制信号; 调整单元，其基于天线控制信号调整每个天线元件的方向性特性; 以及基于天线控制信号将天线元件分配到扇区的分配单元。 扇区覆盖由基站控制的小区的一部分，并且小区中的扇区数量可通过天线控制信号而变化。

公开(公告)号：US20050030916A1

公开(公告)日：2005-02-10

申请号：US10925083

申请日：2004-08-24

Applicant: Shinichi Mori ,  Tetsuro Imai ,  Yoshihiro Ishikawa ,  Mikio Iwamura

Inventor： Shinichi Mori ,  Tetsuro Imai ,  Yoshihiro Ishikawa ,  Mikio Iwamura

IPC: H04B1/707 ,  H04B1/7073 ,  H04B1/7075 ,  H04B1/708 ,  H04B1/7113 ,  H04B7/26 ,  H04L7/00 ,  H04W24/00 ,  H04W56/00 ,  H04W88/02 ,  H04W92/10 ,  H04B7/216

CPC classification number: H04B1/70755 ,  H04B1/708 ,  H04B1/7113 ,  H04B2201/70701 ,  H04B2201/70702

Abstract: In mobile communication systems employing the CDMA method, the communication quality is acquired from the CDMA pilot channel. A communication quality acquisition apparatus comprises a delay profile acquisition unit comprising a control unit, synchronization unit and measurement unit, in addition to a data storage unit. The communication quality is measured by the synchronization unit and the measurement unit which are alternatively controlled by the control unit. When the communication quality is acquired through the CDMA pilot channel, the data acquisition efficiency can be significantly raised.

Abstract translation: 在采用CDMA方法的移动通信系统中，从CDMA导频信道获取通信质量。 通信质量获取装置还包括除数据存储单元之外的包括控制单元，同步单元和测量单元的延迟分布获取单元。 通信质量由控制单元交替控制的同步单元和测量单元测量。 当通过CDMA导频信道获取通信质量时，可以显着提高数据采集效率。

公开(公告)号：US20120178393A1

公开(公告)日：2012-07-12

申请号：US13391697

申请日：2010-08-12

Applicant: Hiroyuki Kawai ,  Mototsugu Suzuki ,  Tetsuro Imai ,  Yoshihiro Ishikawa

Inventor： Hiroyuki Kawai ,  Mototsugu Suzuki ,  Tetsuro Imai ,  Yoshihiro Ishikawa

IPC: H04B17/00

CPC classification number: H04J11/0023 ,  H04W24/08

Abstract: Provided are a receiving apparatus and an interference power estimation method that can perform interference power estimation with high accuracy even when correlation in a fading variation between reference signals is low and obtain accurate receiving quality. The interference power estimation method according to the present invention receives a plurality of discontinuous reference signals on the time/frequency plane, extracts the reference signals from the received signal, linear-combines channel variation values obtained from reference signals surrounding a reference signal of a specific time/frequency on the time/frequency plane with predetermined weighting and estimates interference power using the linear-combined value resulting from the linear combining.

Abstract translation: 提供一种接收装置和干扰功率估计方法，即使在参考信号之间的衰落变化中的相关性低并且获得准确的接收质量的情况下，也能够以高精度执行干扰功率估计。 根据本发明的干扰功率估计方法在时间/频率平面上接收多个不连续参考信号，从接收信号中提取参考信号，将包含特定信号的参考信号的参考信号获得的信道变化值进行线性组合 使用预定加权的时间/频率平面上的时间/频率，并且使用由线性组合产生的线性组合值来估计干扰功率。

公开(公告)号：US20110261870A1

公开(公告)日：2011-10-27

申请号：US13143631

申请日：2010-01-06

Applicant: Koshiro Kitao ,  Tetsuro Imai ,  Mototsugu Suzuki

Inventor： Koshiro Kitao ,  Tetsuro Imai ,  Mototsugu Suzuki

IPC: H04W24/00

CPC classification number: H04J11/0023

Abstract: A radio quality measurement apparatus extracts RS from a received signal on which FFT has been performed, and derives a FFT point number (N) of time samples to generate N0 division signals. The time window of N points includes N0 division windows. Each division signal includes a series of time samples in a corresponding division window. The apparatus obtains a phase deviation amount (θ) between subcarrier signal components in the division signal on which FFT has been performed, and an interference signal power (ISSI), so as to calculate SIR. A phase difference between the signal components is corrected by the phase deviation amount (θ) depending on a position (n′) of a delay path. SIR is calculated based on a first value λ1 and a second value λ2 that are respectively derived from ensemble mean of sum signal strength and difference signal strength (|ri±ri+1/ejθ|2) of corrected two signal components.

Abstract translation: 无线电质量测量装置从已经执行了FFT的接收信号中提取RS，并且导出时间样本的FFT点数（N）以产生N0个分频信号。 N点的时间窗包括N0分割窗口。 每个除法信号包括相应分割窗口中的一系列时间样本。 该装置获得已经执行了FFT的除法信号中的子载波信号分量与干扰信号功率（ISSI）之间的相位偏移量（＆amp;），以便计算SIR。 信号分量之间的相位差根据延迟路径的位置（n'）由相位偏移量（＆amp;θ）进行校正。 基于校正的两个信号分量的和信号强度和差分信号强度（| ri±ri + 1 / ej＆amp; tt; | 2）的综合平均值分别导出的第一值λ1和第二值λ2来计算SIR。

公开(公告)号：US07545790B2

公开(公告)日：2009-06-09

申请号：US10925083

申请日：2004-08-24

Applicant: Shinichi Mori ,  Tetsuro Imai ,  Yoshihiro Ishikawa ,  Mikio Iwamura

Inventor： Shinichi Mori ,  Tetsuro Imai ,  Yoshihiro Ishikawa ,  Mikio Iwamura

IPC: H04B7/216 ,  H04J3/06 ,  H04L7/00

CPC classification number: H04B1/70755 ,  H04B1/708 ,  H04B1/7113 ,  H04B2201/70701 ,  H04B2201/70702

Abstract: In mobile communication systems employing the CDMA method, the communication quality is acquired from the CDMA pilot channel. A communication quality acquisition apparatus comprises a delay profile acquisition unit comprising a control unit, synchronization unit and measurement unit, in addition to a data storage unit. The communication quality is measured by the synchronization unit and the measurement unit which are alternatively controlled by the control unit. When the communication quality is acquired through the CDMA pilot channel, the data acquisition efficiency can be significantly raised.

公开(公告)号：US07139571B1

公开(公告)日：2006-11-21

申请号：US09616013

申请日：2000-07-13

Applicant: Yoshihiro Ishikawa ,  Tetsuro Imai ,  Mamoru Sawahashi ,  Seizo Onoe

Inventor： Yoshihiro Ishikawa ,  Tetsuro Imai ,  Mamoru Sawahashi ,  Seizo Onoe

IPC: H04Q7/20

CPC classification number: H04W48/16 ,  H04W36/32 ,  Y02D70/00

Abstract: A cell search control method, a mobile station and a mobile communications system can save consumption power with maintaining high accuracy for selecting a base station. The mobile station measures receiving quality (highest received power and the like) of a currently captured perch channel of a base station; automatically makes a decision as to whether the mobile station is located at a cell periphery in which the need for searching for a new perch channel is great, or located in neighborhood of a base station in which the need is little; and increases the frequency of the search at a location where the need is great and decreases it at a location where the need is little.

Abstract translation: 小区搜索控制方法，移动站和移动通信系统可以在保持用于选择基站的高精度的情况下节省消耗功率。 移动站测量基站当前捕获的导频信道的接收质量（最高接收功率等）; 自动决定移动台是否位于其中需要搜索新的导频信道很大的小区外围，或者位于需要很少的基站附近; 并且在需要很大的位置增加搜索的频率，并且在需要很小的位置减少搜索的频率。

公开(公告)号：US20050272460A1

公开(公告)日：2005-12-08

申请号：US11139185

申请日：2005-05-27

Applicant: Tetsuro Imai ,  Shinichi Mori

Inventor： Tetsuro Imai ,  Shinichi Mori

IPC: H04B1/10 ,  H04B1/707 ,  H04B1/7075 ,  H04B7/26 ,  H04B17/00 ,  H04B17/318 ,  H04B17/336 ,  H04B17/345 ,  H04L7/00 ,  H04L7/04 ,  H04W24/00 ,  H04W56/00 ,  H04W88/02 ,  H04B7/00

CPC classification number: H04B1/707 ,  H04B1/1027 ,  H04B1/7093 ,  H04B1/7115 ,  H04B17/336 ,  H04L1/20

Abstract: In order to perform synchronization detection with high speed, high precision and high reliability and to measure communication quality (propagation characteristics) at high precision and high efficiency, a mobile station (202) includes synchronization detecting portion (221) for detecting synchronization chip timing of channel to be measured, a synchronization chip timing information portion accumulating information of detected synchronization chip timing, a correlation detecting portion (222) deriving a correlation value between spreading code of the channel to be measured and a received signal for performing communication with a base station and measurement of communication quality with taking the detected synchronization chip timing as a reception chip timing, a time series generating portion (223) for generating a time series data of received signal vector after correlation detection, and a communication quality calculating portion (224) for calculating communication quality from generated time series data.

Abstract translation: 为了以高速，高精度和高可靠性执行同步检测，并且以高精度和高效率测量通信质量（传播特性），移动台（202）包括同步检测部分（221），用于检测同步码片定时 待测量的信道，累积检测到的同步码片定时信息的同步码片定时信息部分，得到待测信道的扩展码与用于与基站通信的接收信号之间的相关值的相关检测部分（222） 以及以检测到的同步码片定时作为接收码片定时的通信质量的测量，用于产生相关检测后的接收信号矢量的时间序列数据的时间序列产生部分（223）和用于 计算沟通准备 从生成的时间序列数据。

公开(公告)号：US07003325B2

公开(公告)日：2006-02-21

申请号：US10317058

申请日：2002-12-12

Applicant: Hideyuki Matsutani ,  Hideo Matsuki ,  Tetsuro Imai

Inventor： Hideyuki Matsutani ,  Hideo Matsuki ,  Tetsuro Imai

IPC: H04Q7/20

CPC classification number: H04W64/00 ,  G01S5/0205 ,  G01S5/0226 ,  G01S5/14 ,  G01S11/06 ,  Y02D70/00

Abstract: Signals received from mobile station by respective slave units each are attenuated by a combination of attenuation factors set for the respective slave units, the attenuated signals thereafter are combined into a resultant signal in master unit, and the combination of attenuation factors is changed based on a predetermined rule. Then information about magnitudes of powers of signals received from the mobile station by the respective slave units is acquired based on change of information about a power of the resultant signal occurring with change in the combination of attenuation factors. At this time, the signal received from the mobile station by each slave unit increases its power with decreasing distance of the slave unit to the mobile station; therefore, distances from the mobile station to the respective slave units are estimated based on the information about the magnitudes of the powers, and the location of the mobile station is suitably estimated thereby.

公开(公告)号：US06968197B2

公开(公告)日：2005-11-22

申请号：US09825817

申请日：2001-04-04

Applicant: Shinichi Mori ,  Tetsuro Imai ,  Yoshihiro Ishikawa ,  Mikio Iwamura

Inventor： Shinichi Mori ,  Tetsuro Imai ,  Yoshihiro Ishikawa ,  Mikio Iwamura

IPC: H04B1/707 ,  H04B1/7073 ,  H04B1/7075 ,  H04B1/708 ,  H04B1/7113 ,  H04B7/26 ,  H04L7/00 ,  H04W24/00 ,  H04W56/00 ,  H04W88/02 ,  H04W92/10 ,  H04B15/00 ,  H04J3/06

CPC classification number: H04B1/70755 ,  H04B1/708 ,  H04B1/7113 ,  H04B2201/70701 ,  H04B2201/70702

Abstract: In mobile communication systems employing the CDMA method, the communication quality is acquired from the CDMA pilot channel. A communication quality acquisition apparatus comprises a delay profile acquisition unit comprising a control unit, synchronization unit and measurement unit, in addition to a data storage unit. The communication quality is measured by the synchronization unit and the measurement unit which are alternatively controlled by the control unit. When the communication quality is acquired through the CDMA pilot channel, the data acquisition efficiency can be significantly raised.

公开(公告)号：US07333529B2

公开(公告)日：2008-02-19

申请号：US11139185

申请日：2005-05-27

Applicant: Tetsuro Imai ,  Shinichi Mori

Inventor： Tetsuro Imai ,  Shinichi Mori

IPC: H04B1/00

CPC classification number: H04B1/707 ,  H04B1/1027 ,  H04B1/7093 ,  H04B1/7115 ,  H04B17/336 ,  H04L1/20

Abstract: In order to perform synchronization detection with high speed, high precision and high reliability and to measure communication quality (propagation characteristics) at high precision and high efficiency, a mobile station (202) includes synchronization detecting portion (221) for detecting synchronization chip timing of channel to be measured, a synchronization chip timing information portion accumulating information of detected synchronization chip timing, a correlation detecting portion (222) deriving a correlation value between spreading code of the channel to be measured and a received signal for performing communication with a base station and measurement of communication quality with taking the detected synchronization chip timing as a reception chip timing, a time series generating portion (223) for generating a time series data of received signal vector after correlation detection, and a communication quality calculating portion (224) for calculating communication quality from generated time series data.

Abstract translation: 为了以高速，高精度和高可靠性执行同步检测，并且以高精度和高效率测量通信质量（传播特性），移动台（202）包括同步检测部分（221），用于检测同步码片定时 待测量的信道，累积检测到的同步码片定时信息的同步码片定时信息部分，得到待测信道的扩展码与用于与基站通信的接收信号之间的相关值的相关检测部分（222） 以及以检测到的同步码片定时作为接收码片定时的通信质量的测量，用于产生相关检测后的接收信号矢量的时间序列数据的时间序列产生部分（223）和用于 计算沟通准备 从生成的时间序列数据。