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    • 3. 发明申请
    • COMMUNICATION METHOD, COMMUNICATION APPARATUS, INTEGRATED CIRCUIT AND CIRCUIT MODULE
    • 通信方法,通信设备,集成电路和电路模块
    • US20080301253A1
    • 2008-12-04
    • US12130599
    • 2008-05-30
    • Shinichiro OHMIYoshio Urabe
    • Shinichiro OHMIYoshio Urabe
    • G06F15/16
    • H04B3/54H04B2203/5408H04B2203/5445H04L5/0007H04L5/0044H04L12/4035H04L12/413
    • A communication method in a communication system which includes a master apparatus and plural slave apparatuses including at least first, second and third slave apparatuses, that are connected to communication medium and are associated with plural cyclic slots including at least first and second slots for triggering data transmission after a latency time, wherein data transmissions of the first and the second slave apparatuses are triggered by the first slot; and data transmission of the third slave apparatus is triggered by the second slot, the method including: sensing the communication medium by the master apparatus; and modifying, by the master apparatus, the first slave apparatus so as to trigger the data transmission of the first slave apparatus by a third slot which differs from the first and the second slots when the data transmission of the first slave apparatus triggered by the first slot is sensed in the sensing process.
    • 一种通信系统中的通信方法,包括主设备和多个从设备,至少包括第一,第二和第三从设备,其连接到通信介质并且与多个循环槽相关联,所述多个循环槽包括用于触发数据的至少第一和第二槽 在等待时间之后的传输,其中第一和第二从设备的数据传输由第一时隙触发; 并且所述第三从属设备的数据传输由所述第二时隙触发,所述方法包括:通过所述主设备感测所述通信介质; 以及由所述主设备修改所述第一从设备,以便当由所述第一从设备触发的所述第一从设备的数据传输与所述第一和第二时隙不同的第三时隙触发所述第一从设备的数据传输时, 在感测过程中感测到槽。
    • 4. 发明授权
    • Signal detection device and clock recovery device using the same
    • 信号检测装置和使用其的时钟恢复装置
    • US5617374A
    • 1997-04-01
    • US489276
    • 1995-06-09
    • Shinichiro OhmiHitoshi TakaiYoshio Urabe
    • Shinichiro OhmiHitoshi TakaiYoshio Urabe
    • H04L7/00H04L7/02H04L7/027H04L7/033H04L7/10G04B47/00H03K5/13
    • H04L7/0331
    • A time window detection portion 3a outputs a time window detection pulse from a time window signal generated in a time window generating portion 2a and a zero-cross detection pulse detected in a zero-cross detection portion 1a. First and second phase storage portions 4a and 5a store output phase values of a phase counter 22 for different times as first and second phase values, respectively. A center phase computing portion 6a computes a first center phase value from the first and second phase values and a center phase storage portion 7a stores the first center phase value of the last time as a second center phase value. An approximation detection portion 8a determines whether the first and second center phase values are approximate or not and outputs an approximation detection pulse when they approximate. A frequency determination portion 20 determines whether a data signal is included in the input signal or not on the basis of frequency of detection of the approximation detection pulse with respect to the zero-cross detection pulse computed in a frequency computing portion 17.
    • 时间窗检测部分3a从在时间窗产生部分2a中产生的时间窗信号和在零交叉检测部分1a中检测的过零检测脉冲输出时间窗检测脉冲。 第一和第二相位存储部分4a和5a分别将相位计数器22的输出相位值分别作为第一和第二相位值。 中心相位计算部分6a根据第一和第二相位值计算第一中心相位值,并且中心相位存储部分7a将最后一次的第一中心相位值存储为第二中心相位值。 近似检测部分8a确定第一和第二中心相位值是否近似,并且当它们近似时输出近似检测脉冲。 频率确定部分20基于在频率计算部分17中计算的过零检测脉冲的检测频率来确定数据信号是否包括在输入信号中。
    • 6. 发明申请
    • SIGNAL DETECTION DEVICE AND SIGNAL DETECTION METHOD
    • 信号检测装置和信号检测方法
    • US20130148766A1
    • 2013-06-13
    • US13817668
    • 2012-03-07
    • Yoshio UrabeKazuhiro AndoMasataka IrieHiroshi Takahashi
    • Yoshio UrabeKazuhiro AndoMasataka IrieHiroshi Takahashi
    • H04L27/26
    • H04L27/2649H04B7/0828H04B17/327
    • 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.
    • 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。
    • 8. 发明授权
    • Wireless communication apparatus and wireless communication method
    • 无线通信装置和无线通信方法
    • US08040837B2
    • 2011-10-18
    • US11916884
    • 2006-06-08
    • Yoshio UrabeKenji MiyanagaKazuhiro AndoChalermphol ApichaichalermwongseTsutomu Mukai
    • Yoshio UrabeKenji MiyanagaKazuhiro AndoChalermphol ApichaichalermwongseTsutomu Mukai
    • H04Q7/00
    • H04W74/0808H04W56/002H04W72/1205
    • 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.
    • 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。
    • 9. 发明授权
    • Data transmission method and data reception method
    • 数据传输方法和数据接收方法
    • US07702027B2
    • 2010-04-20
    • US10573044
    • 2005-03-09
    • Naganori ShirakataYasuo HaradaKoichiro TanakaTomohiro KimuraShuya HosokawaYoshio Urabe
    • Naganori ShirakataYasuo HaradaKoichiro TanakaTomohiro KimuraShuya HosokawaYoshio Urabe
    • H04B7/02
    • H04L27/2657H04L25/0204H04L27/2613H04L27/2675
    • 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.
    • 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。