公开(公告)号：US20130148766A1

公开(公告)日：2013-06-13

申请号：US13817668

申请日：2012-03-07

申请人： Yoshio Urabe ,  Kazuhiro Ando ,  Masataka Irie ,  Hiroshi Takahashi

发明人： Yoshio Urabe ,  Kazuhiro Ando ,  Masataka Irie ,  Hiroshi Takahashi

IPC分类号： H04L27/26

CPC分类号： H04L27/2649 ,  H04B7/0828 ,  H04B17/327

摘要： In this signal detection device (100), a delaying unit (101) delays a first distributed signal or a second distributed signal distributed from a received signal for a period of time of T1 to form a first multiplication signal, and delays the one for a period of time of T2 (T2>T1) to form a second multiplication signal. An integrator (104) calculates a first correlation value by integrating the result of multiplying the first distributed signal and the first multiplication signal. An integrator (105) calculates a second correlation value by integrating the result of multiplying the second distributed signal and the second multiplication signal. An evaluation unit (108) evaluates whether the signal to be detected, which is a periodic signal with a period of T1 or a periodic signal with a period of T2, exists or not, on the basis of the first correlation value and the second correlation value.

摘要翻译： 在该信号检测装置（100）中，延迟单元（101）将从接收信号分配的第一分布信号或第二分布信号延迟T1的时间段，以形成第一乘法信号，并将其延迟 T2（T2> T1）的时间段，形成第二个乘法信号。 积分器（104）通过对乘以第一分布式信号和第一乘法信号的结果进行积分来计算第一相关值。 积分器（105）通过对乘以第二分布信号和第二乘法信号的结果进行积分来计算第二相关值。 评估单元（108）基于第一相关值和第二相关性来评估是否存在周期为T1的周期信号或周期为T2的周期信号的被检测信号是否存在 值。

公开(公告)号：US08064370B2

公开(公告)日：2011-11-22

申请号：US12281388

申请日：2007-03-01

申请人： Naganori Shirakata ,  Shuya Hosokawa ,  Koji Imamura ,  Koichiro Tanaka ,  Kenji Miyanaga ,  Yoshio Urabe ,  Tsutomu Mukai

发明人： Naganori Shirakata ,  Shuya Hosokawa ,  Koji Imamura ,  Koichiro Tanaka ,  Kenji Miyanaga ,  Yoshio Urabe ,  Tsutomu Mukai

IPC分类号： H04B7/005

CPC分类号： H04L69/28 ,  H04L1/0007 ,  H04L1/16 ,  H04W16/14 ,  H04W72/12

摘要： At a time T131, a wireless communication apparatus 11A determines to transmit a data packet, and then performs interference signal detection for a period TA. At a time T132, which precedes a time T133 at which the period TA has elapsed since the time T131, the wireless communication apparatus 11A detects a data packet d21 (an interference signal). At a time T134, at which a period TB has elapsed since the time T132 at which the interference signal has been detected, the wireless communication apparatus 11A starts transmitting a data packet d11 to a wireless communication apparatus 12A. At a time T136, the wireless communication apparatus 11A completes the transmission of the data packet d11.

摘要翻译： 在时间T131，无线通信设备11A确定发送数据分组，然后执行周期TA的干扰信号检测。 无线通信装置11A在从时间T131开始经过了周期TA的时间T133之前的时刻T132，检测到数据包d21（干扰信号）。 在从检测到干扰信号的时间T132开始经过了周期TB的时间T134之后，无线通信装置11A开始向无线通信装置12A发送数据包d11。 在时间T136，无线通信装置11A完成数据分组d11的发送。

公开(公告)号：US08040837B2

公开(公告)日：2011-10-18

申请号：US11916884

申请日：2006-06-08

申请人： Yoshio Urabe ,  Kenji Miyanaga ,  Kazuhiro Ando ,  Chalermphol Apichaichalermwongse ,  Tsutomu Mukai

发明人： Yoshio Urabe ,  Kenji Miyanaga ,  Kazuhiro Ando ,  Chalermphol Apichaichalermwongse ,  Tsutomu Mukai

IPC分类号： H04Q7/00

CPC分类号： H04W74/0808 ,  H04W56/002 ,  H04W72/1205

摘要： When communicating with a second wireless station, a first wireless station judges, based on link-related information received form the second wireless station and link-related information extracted from a signal transmitted by a fourth wireless station, whether a transmission link from the third wireless station to the fourth wireless station and a transmission link from the first wireless station to the second wireless station can be concurrently established without interference with each other. If judging affirmatively, the first wireless station transmits a signal to the second wireless station in synchronization with a signal transmitted by the third wireless station to the fourth wireless station. Preferably, when the first wireless station having a concurrent transmission control function communicates with the second wireless station having a interference reduction function, the first wireless station controls the interference reduction function of the second wireless station based on the link-related information received from the second wireless station and interference information, such that the transmission link from the third wireless station to the fourth wireless station and the transmission link from the first wireless station to the second wireless station can be established at the same time without interference with each other. If judging that the concurrent transmission is available, the first wireless station transmits a signal to the second wireless station according to a timing that overlaps transmission of a signal from the third wireless station to the fourth wireless station.

摘要翻译： 当与第二无线站通信时，第一无线站基于从第二无线站接收到的链路相关信息和从由第四无线站发送的信号提取的链路相关信息来判断来自第三无线站的传输链路 可以同时建立到第四无线站的站和从第一无线站到第二无线站的传输链路，而不会彼此干扰。 如果肯定地判断，则第一无线站与第三无线站向第四无线站发送的信号同步地向第二无线站发送信号。 优选地，当具有并发传输控制功能的第一无线站与具有干扰减少功能的第二无线站通信时，第一无线站基于从第二无线站接收到的链路相关信息来控制第二无线站的干扰减少功能 无线站和干扰信息，使得可以同时建立从第三无线站到第四无线站的传输链路和从第一无线站到第二无线站的传输链路，而不会彼此干扰。 如果判断并发传输可用，则第一无线站根据与从第三无线站到第四无线站的信号的传输重叠的定时向第二无线站发送信号。

公开(公告)号：US20100195569A1

公开(公告)日：2010-08-05

申请号：US12666337

申请日：2009-04-23

申请人： Yosuke Matsushita ,  Yuki Fujiwara ,  Hideki Homma ,  Naoki Morita ,  Yoshio Urabe

发明人： Yosuke Matsushita ,  Yuki Fujiwara ,  Hideki Homma ,  Naoki Morita ,  Yoshio Urabe

IPC分类号： H04W40/00

CPC分类号： H04B3/54 ,  H04B3/544 ,  H04B2203/5445

摘要： Provided is a communication terminal device that reduces, in a network using a power line, the percentage of bands consumed for transmission of control packets in the bands consumed for all the communication, so as to ensure transmission of data intended to be transmitted. A PLC terminal F701 connected to the network of power line communication transmits, when having determined that the terminal does not receive from the network a beacon for a predetermined period of time, a beacon request packet to the network, using a modulation method having the lowest communication speed among the modulation methods that can be used in the network.

摘要翻译： 提供了一种通信终端设备，其在使用电力线的网络中减少为所有通信消耗的频带中的控制分组的传输所消耗的频带的百分比，以便确保要发送的数据的传输。 连接到电力线通信网络的PLC终端F701在已经确定终端没有从网络接收到预定时间段的信标的情况下，使用具有最低的调制方法向网络发送信标请求分组 在网络中可以使用的调制方式之间的通信速度。

公开(公告)号：US07702027B2

公开(公告)日：2010-04-20

申请号：US10573044

申请日：2005-03-09

申请人： Naganori Shirakata ,  Yasuo Harada ,  Koichiro Tanaka ,  Tomohiro Kimura ,  Shuya Hosokawa ,  Yoshio Urabe

发明人： Naganori Shirakata ,  Yasuo Harada ,  Koichiro Tanaka ,  Tomohiro Kimura ,  Shuya Hosokawa ,  Yoshio Urabe

IPC分类号： H04B7/02

CPC分类号： H04L27/2657 ,  H04L25/0204 ,  H04L27/2613 ,  H04L27/2675

摘要： In a transfer apparatus to which MIMO-OFDM is applied, a data transmission method and a data reception method are provided in which, even when there are frequency errors varying among transfer paths, the precision of estimation of an inverse propagation coefficient function can be improved, thereby making it possible to suppress a degradation in characteristics. Among symbols composed of a plurality of subcarriers orthognal to each other, the transfer apparatus uses, as a synchronization symbol, a symbol in which predetermined amplitudes and phases are assigned to a plurality of subcarriers spaced at predetermined frequency intervals. The synchronization symbol is divided into transmission antennas to generate a plurality of synchronization subsymbols, which are in turn simultaneously transmitted from a plurality of transmission antennas. A reception apparatus estimates a frequency error for each transfer path based on synchronization subsymbols included in signals received by a plurality of reception antennas, and based on the estimated frequency errors, corrects the received signals.

摘要翻译： 在应用MIMO-OFDM的传送装置中，提供数据传输方法和数据接收方法，其中即使在传输路径之间存在频率误差变化的情况下，也可以提高反向传播系数函数的估计精度 ，从而可以抑制特性的劣化。 在由彼此正交的多个子载波组成的符号之中，传送装置使用将预定的幅度和相位分配给以预定频率间隔隔开的多个子载波的符号作为同步符号。 同步符号被分成发送天线以产生多个同步子符号，这些同步子符号又从多个发送天线同时发送。 接收装置基于由多个接收天线接收的信号中包含的同步子符号估计每个传送路径的频率误差，并且基于估计的频率误差来校正接收到的信号。

公开(公告)号：US20090147893A1

公开(公告)日：2009-06-11

申请号：US12299933

申请日：2007-05-09

申请人： Hiroshi Takahashi ,  Chalermphol Apichaichalermwongse ,  Kenji Miyanaga ,  Yoshio Urabe ,  Kazuhiro Ando ,  Hiroshi Hayashino

发明人： Hiroshi Takahashi ,  Chalermphol Apichaichalermwongse ,  Kenji Miyanaga ,  Yoshio Urabe ,  Kazuhiro Ando ,  Hiroshi Hayashino

IPC分类号： H04B1/10

CPC分类号： H04B1/123 ,  H04B1/7103 ,  H04J11/0036 ,  H04L25/0328

摘要： A reception station 1b compares its BSSID with BSSID included in a signal that has arrived thereat. As BSSIDs included in signals transmitted by interfering stations 1c and 1d both match BSSID of the reception station 1b, the reception station 1b identifies each of the interfering stations 1c and 1d as a non-suppression target transmission source. As neither of BSSIDs included in signals transmitted by interfering stations 2a and 2b matches BSSID of the reception station 1b, the reception station 1b identifies each of the interfering stations 2a and 2b as a suppression target transmission source. The reception station 1b uses characteristic amounts of signals that are associated with the interfering stations (i.e., suppression target transmission sources) 2a and 2b and that have been measured in the past as characteristic amounts of interfering signals that are used to suppress the interfering signals from a received signal.

摘要翻译： 接收站1b将其BSSID与包括在已经到达的信号中的BSSID进行比较。 由于由干扰站1c和1d发送的信号中包括的BSSID都匹配接收站1b的BSSID，所以接收站1b将每个干扰站1c和1d识别为非抑制目标传输源。 由于由干扰站2a和2b发送的信号中包括的BSSID都不与匹配接收站1b的BSSID，所以接收站1b将每个干扰站2a和2b识别为抑制目标传输源。 接收站1b使用与干扰站（即，抑制目标发送源）2a和2b相关联的信号的特征量（即，抑制目标发送源）2a和2b，并且作为用于抑制干扰信号的干扰信号的特征量， 接收信号。

公开(公告)号：US07545870B1

公开(公告)日：2009-06-09

申请号：US10582765

申请日：2005-04-12

申请人： Naganori Shirakata ,  Yukihiro Omoto ,  Yoshio Urabe ,  Yasuo Harada

发明人： Naganori Shirakata ,  Yukihiro Omoto ,  Yoshio Urabe ,  Yasuo Harada

IPC分类号： H04L7/00 ,  H04L27/28

CPC分类号： H04L27/266 ,  H04L27/2613 ,  H04L27/2642 ,  H04L27/2659 ,  H04L27/2662 ,  H04L27/2675 ,  H04L27/2679 ,  H04L2027/0067 ,  H04L2027/0095

摘要： A reception device according to the present invention receives a transmission frame including a synchronization symbol string, having a synchronization symbol repeated multiple times, inserted before a data symbol string. The synchronization symbol is obtained by synthesizing a plurality of sub band symbols which are mutually orthogonal and having different carrier frequencies. The carrier frequencies of the sub band symbols are located at an equal predetermined frequency interval. The synchronization symbol includes a repeated synchronization pattern. The reception device detects a rough carrier frequency error from a phase difference of a synchronization pattern correlation value to correct the frequency, and then detects a residual frequency error from an inter-symbol phase difference of each sub band to correct the frequency. The reception device detects a sampling clock frequency error from an inter-sub band phase difference to correct the frequency. Thus, the demodulation error of the data symbol is reduced.

摘要翻译： 根据本发明的接收装置在数据符号串之前接收包括具有重复多次的同步符号的同步符号串的传输帧。 通过合成相互正交且具有不同载波频率的多个子带符号来获得同步符号。 子带符号的载波频率位于相等的预定频率间隔。 同步符号包括重复的同步模式。 接收装置根据同步模式相关值的相位差检测粗略载波频率误差，以校正频率，然后从每个子带的符号间相位差检测残留频率误差，以校正频率。 接收装置从子频带相位差检测采样时钟频率误差，以校正频率。 因此，减少数据符号的解调错误。

公开(公告)号：US20090122807A1

公开(公告)日：2009-05-14

申请号：US12270671

申请日：2008-11-13

申请人： Kensuke YOSHIZAWA ,  Youhei KOIDE ,  Shunsuke NAGAYASU ,  Yoshio URABE

发明人： Kensuke YOSHIZAWA ,  Youhei KOIDE ,  Shunsuke NAGAYASU ,  Yoshio URABE

IPC分类号： H04J3/00

CPC分类号： H04W74/0816 ,  H04L12/40163 ,  H04L12/413

摘要： A communication apparatus is connected to a transmission channel capable of transmitting a plurality of kinds of data, each kind of data having different priority levels. The apparatus includes: an acquisition section which acquires each priority information of each kind of data on the transmission channel; and a transmission controller that, when transmitting data having a predetermined priority are transmitted from the communication apparatus, controls a time from a predetermined transmission reference time to a transmission end time of the transmitting data in accordance with the priority information.

摘要翻译： 通信装置连接到能够发送多种数据的传输信道，每种数据具有不同的优先级。 该装置包括：获取部，其获取传输信道上的各种数据的每个优先级信息; 以及发送控制器，当从通信装置发送具有预定优先级的数据时，根据优先级信息控制从预定的发送参考时间到发送数据的发送结束时间的时间。

公开(公告)号：US5901179A

公开(公告)日：1999-05-04

申请号：US657959

申请日：1996-06-04

申请人： Yoshio Urabe ,  Shouichi Koga ,  Hitoshi Takai ,  Koji Kai ,  Hidetoshi Yamasaki

发明人： Yoshio Urabe ,  Shouichi Koga ,  Hitoshi Takai ,  Koji Kai ,  Hidetoshi Yamasaki

IPC分类号： H03G3/30 ,  H04L25/03 ,  H04L27/20 ,  H04L27/36 ,  H04L27/00

CPC分类号： H03G3/3089 ,  H03G3/3047 ,  H04L25/03859 ,  H04L27/2067 ,  H04L27/362

摘要： In the transmitter which carries out burst transmission using information data as a packet, if the status is divided into four modes, namely, burst stop mode, burst rising mode, burst continuous mode, and burst falling mode, a waveform shaping equipment designed to read out shaped waveform data for each mode from outputs of either of the two memory tables, the first memory table which holds waveform data for specific data patterns used in common in burst rising mode and burst falling mode and the second memory table which holds waveform data for all data patterns used in the burst continuous mode, or a waveform shaping equipment comprising the third memory table which holds waveform data corresponding to all the data patterns used in the burst rising mode and the fourth memory table which holds waveform data corresponding to all data patterns used in the burst falling mode and generating shaped waveform data by synthesizing the two outputs of the third and the fourth memory tables at the time of burst continuous mode.

摘要翻译： 在使用信息数据作为分组执行突发传输的发送机中，如果状态被分为四种模式，即突发停止模式，突发上升模式，突发连续模式和突发下降模式，设计为读取的波形整形设备 从两个存储器表中的任一个的输出中输出每个模式的形状波形数据，第一存储表保存用于突发上升模式和突发下降模式中共同使用的特定数据模式的波形数据，以及第二存储器表，其保存用于 在脉冲串连续模式中使用的所有数据模式，或波形整形设备，包括保存与突发上升模式中使用的所有数据模式对应的波形数据的第三存储器表，以及保存对应于所有数据模式的波形数据的第四存储器表 用于突发下降模式，并通过在t处合成第三和第四存储器表的两个输出来产生形状波形数据 他连续时间连续模式。

公开(公告)号：US5504774A

公开(公告)日：1996-04-02

申请号：US169529

申请日：1993-12-20

申请人： Hitoshi Takai ,  Yoshio Urabe ,  Hidetoshi Yamasaki

发明人： Hitoshi Takai ,  Yoshio Urabe ,  Hidetoshi Yamasaki

IPC分类号： H04B1/707 ,  H04K1/10

CPC分类号： H04B1/70718

摘要： A data transmitting and receiving apparatus is disclosed. The receiving apparatus receives a spread spectrum signal prepared by modulating a carrier wave with data to produce a data modulated signal and multiplying the data modulated signal with a spreading signal which has a bandwidth greater than that of the data modulated signal. The receiving apparatus may include three bandpass filters for passing three different band portions of a full band of the spread spectrum signal and producing an intermediate signal, and a detector for detecting data from the intermediate signal and for producing a detector output. The apparatus may also include a reception state evaluation device for detecting the current reception state of the detector and for producing a poor reception signal, when the detector is in a poor reception state. The poor reception signal is used for changing from a current band to another band.

摘要翻译： 公开了一种数据发送和接收装置。 接收装置接收通过用数据调制载波准备的扩频信号，以产生数据调制信号，并将数据调制信号与带宽大于数据调制信号的带宽的扩展信号相乘。 接收装置可以包括三个带通滤波器，用于通过扩展频谱信号的全带的三个不同频带部分并产生中间信号;以及检测器，用于从中间信号检测数据并产生检测器输出。 当检测器处于不良接收状态时，该装置还可以包括用于检测检测器的当前接收状态并用于产生不良接收信号的接收状态评估装置。 差的接收信号用于从当前频带改变到另一频带。