公开(公告)号：US07688903B2

公开(公告)日：2010-03-30

申请号：US11293147

申请日：2005-12-05

申请人： Yusaku Okamura

发明人： Yusaku Okamura

IPC分类号： H04K1/10 ,  H04L27/28

CPC分类号： H04L5/006 ,  H04L5/0007 ,  H04L5/0046

摘要： A bit-power distribution ratio calculation unit measures several times an SNR of periodic noise occurring on a communication line to calculate several times, according to the measurement results of the SNR thus measured, a bit distribution ratio to be assigned to each carrier for data transmission for each measurement result. The calculation unit compares the calculated bit distribution ratios with each other to detect a minimum bit value of each carrier to calculate, according to the detected minimum bit values of the respective carriers, a minimum bit distribution ratio including the minimum bit value of each carrier. The calculation unit delivers the minimum bit distribution ratio to a demapping unit and a mapping unit, which conduct data transmission using the minimum bit distribution ratio. Therefore, a multicarrier transmission device can efficiently conduct multicarrier transmission even at occurrence of non-periodic noise.

摘要翻译： 位功率分配比计算单元测量在通信线路上发生的周期性噪声的SNR的几倍，以根据所测量的SNR的测量结果计算多次，分配给每个载波用于数据传输的比特分配比 对于每个测量结果。 计算单元将所计算的比特分配比相互比较，以检测每个载波的最小比特值，以根据检测到的各个载波的最小比特值计算包括每个载波的最小比特值的最小比特分配比。 计算单元将最小比特分配比率提供给解映射单元和映射单元，其使用最小比特分配比进行数据传输。 因此，即使在发生非周期性噪声的情况下，多载波传输装置也能够有效地进行多载波传输。

公开(公告)号：US06510184B1

公开(公告)日：2003-01-21

申请号：US09258259

申请日：1999-02-26

申请人： Yusaku Okamura

发明人： Yusaku Okamura

IPC分类号： H04K110

CPC分类号： H04L5/0007 ,  H04L5/0042 ,  H04L5/0046 ,  H04L5/006 ,  H04L5/0085

摘要： A multi-carrier transmission system and a method thereofor employing a bit distribution method capable of solving the problem set forth above by regarding a plurality of SNR values evaluated at different timings as one SNR value evaluated at different frequency at the same timing and is capable of solving the problem set forth above by realizing a given transmission speed depending upon a plurality of SNR values evaluated at different timings and thus maximizing performance margin. The multi-carrier transmission system has signal to noise ratio evaluating means for obtaining a plurality sets of signal to noise ratio by evaluating signal to noise ratio of each of the multi-carriers at different timing respectively corresponding to a plurality of kinds of noise environments, and bit distribution means for performing bit distribution of each carrier depending upon one set of signal to noise ratio with taking a plurality of sets of signal to noise ratios as one set of signal to noise ratio evaluated on different frequency at the same timing.

摘要翻译： 一种多载波传输系统及其方法，采用能够通过将在不同定时评估的多个SNR值作为在同一时刻以不同频率评估的SNR信号值来解决上述问题的比特分配方法，并且能够 通过根据在不同定时评估的多个SNR值实现给定的传输速度从而最大化性能余量来解决上述问题。 多载波传输系统具有信噪比评估装置，用于通过分别对应于多种噪声环境的不同定时评估每个多载波的信噪比来获得多组信噪比， 以及位分配装置，用于根据一组信噪比执行每个载波的比特分配，同时采用多组信噪比作为在相同定时在不同频率上评估的一组信噪比。

公开(公告)号：US20080244314A1

公开(公告)日：2008-10-02

申请号：US12053776

申请日：2008-03-24

申请人： YUSAKU OKAMURA

发明人： YUSAKU OKAMURA

IPC分类号： G06F11/00

CPC分类号： H04L12/2825 ,  H04L41/0677 ,  H04L41/12

摘要： Upon detecting existence of characteristic information of a failure, of which search is requested, a mobile terminal device 102 notifies a failure management server 104 of the detected location information and time information together with the characteristic information of the failure, and the failure management server 104 notifies a terminal device 1022 of the location information of the failure to be estimated on the basis of the detected location information, time information, and the characteristic information of articles and allows the terminal device 1022 to output this location information. Thereby, even in the case that no communication apparatus is provided to a target apparatus, a failure can be detected and a probability of notification can be improved.

摘要翻译： 在检测到请求搜索的故障的特征信息的存在的情况下，移动终端装置102向故障管理服务器104通知检测到的位置信息和时间信息以及故障的特征信息，故障管理服务器104 基于检测到的位置信息，时间信息和物品的特征信息，向终端装置1022通知要判断的故障的位置信息，并允许终端装置1022输出该位置信息。 因此，即使在没有向目标装置提供通信装置的情况下，也可以检测到故障，并且可以提高通知的概率。

公开(公告)号：US06674768B1

公开(公告)日：2004-01-06

申请号：US09414161

申请日：1999-10-08

申请人： Yusaku Okamura

发明人： Yusaku Okamura

IPC分类号： H04J316

CPC分类号： H04L1/0071 ,  H04J3/1682 ,  H04L1/0002 ,  H04L1/0018 ,  H04L1/007 ,  H04L5/0007 ,  H04L5/0046 ,  H04L5/006 ,  H04L5/023 ,  H04L5/143 ,  H04L27/2608 ,  H04L2001/0098

摘要： A data transmission device for executing data transmission in environments where the noise level changes periodically minimizes delay of fast data. A multiplexing/synchronization control section receives data (in which the ratio between fast data and interleave data is fixed) which are supplied from an upper layer device at a prespecified data rate, and separates the data into fast data and interleave data. The fast data is supplied to a tone ordering section without changing its data rate. Meanwhile, an interleaving section executes interleaving to the interleave data, and a rate converter controls the data rate of the interleave data and supplies the interleave data to the tone ordering section. The tone ordering section assigns the fast data and the interleave data to each carrier of a symbol (frame) to be transmitted, based on preobtained bit distribution with respect to low noise periods or high noise periods, depending on whether the symbol is transmitted in the low noise periods or in periods including the high noise periods. In the data assignment, the amount of fast data included in each symbol is set constant regardless of whether the symbol is transmitted in the low noise periods or in periods including the high noise periods, thereby the amount of fast data transmitted in a fixed time period is made constant, and thus delay of fast data is minimized.

摘要翻译： 用于在噪声电平变化的环境中执行数据传输的数据传输设备使快速数据的延迟最小化。 复用/同步控制部分以预先指定的数据速率接收从上层设备提供的数据（其中快速数据和交织数据之间的比例是固定的），并将数据分离成快速数据和交织数据。 快速数据被提供给音调排序部分而不改变其数据速率。 同时，交织部分对交织数据执行交织，并且速率转换器控制交织数据的数据速率，并将交织数据提供给色调排序部分。 音调排序部分基于相对于低噪声周期或高噪声周期的预先获得的比特分配，将快速数据和交织数据分配给要发送的符号（帧）的每个载波，这取决于符号是否在 低噪声周期或包括高噪声周期的周期。 在数据分配中，无论在低噪声周期中发送符号还是在包括高噪声周期的周期中发送符号，将包括在每个符号中的快速数据的数量设置为常数，从而在固定时间段内发送的快速数据量 使其恒定，因此快速数据的延迟最小化。

公开(公告)号：US20080081650A1

公开(公告)日：2008-04-03

申请号：US11905487

申请日：2007-10-01

申请人： Yusaku Okamura ,  Eiichi Matsuda ,  Susumu Sasaki

发明人： Yusaku Okamura ,  Eiichi Matsuda ,  Susumu Sasaki

IPC分类号： H04B1/10

CPC分类号： H04B3/32 ,  H04B3/04 ,  H04L5/0007 ,  H04L5/0066 ,  H04L5/023 ,  H04L5/14 ,  H04L5/1438 ,  H04L27/2601

摘要： A first communication apparatus stores at least one frequency band influencing a reduction in transmission rate of a communication apparatus being present on an adjacent line adjacent to a communication line and including a range which is higher than an operation frequency band used by the communication apparatus in a storing unit. The first communication apparatus suppresses a transmission output of a signal in the frequency band stored in the storing unit to output a signal to the communication line.

摘要翻译： 第一通信装置存储影响与通信线路相邻的相邻线上存在的通信装置的传输速率的降低的至少一个频带，并且包括比通信装置使用的操作频带高的范围 存储单元。 第一通信装置抑制存储在存储单元中的频带中的信号的发送输出，以向通信线路输出信号。

公开(公告)号：US20050271153A1

公开(公告)日：2005-12-08

申请号：US11143662

申请日：2005-06-03

申请人： Yusaku Okamura ,  Taisuke Goto

发明人： Yusaku Okamura ,  Taisuke Goto

IPC分类号： H04L1/00 ,  H04L27/26 ,  H04L27/28 ,  H04L29/08 ,  H04M3/00

CPC分类号： H04L27/2608 ,  H04L1/0057 ,  H04L1/0061

摘要： A communication quality controller can avoid, when periodically changing noise is abruptly occurring, disconnection of a communication line used for data communication and prevent resetting of a link speed for the data communication. During the data transmission at a beforehand set link speed, a CRC error counter monitors for a predetermined period of time whether or not an error occurs in a CRC error detector at a period less than a noise period changing periodically. According to presence or absence of the error taking place during the monitoring by the counter, a periodic noise detector determines presence or absence of a periodic noise period abruptly taking place. If presence of the periodic noise is determined, disconnection of an associated communication line is avoided, and after the occurrence of the periodic noise is terminated, the data communication is conducted at the link speed.

摘要翻译： 当周期性地改变噪声突然发生时，通信质量控制器可以避免用于数据通信的通信线路的断开，并且防止数据通信的链路速度的重置。 在预先设定的链路速度的数据传输期间，CRC错误计数器在小于周期性变化的噪声周期的周期内，在预定的时间段内监视CRC错误检测器中是否发生错误。 根据在计数器监视期间发生的错误的存在或不存在，周期性噪声检测器确定突然发生周期性噪声周期的存在或不存在。 如果确定了周期性噪声的存在，则避免了相关通信线路的断开，并且在周期性噪声的发生终止之后，以链路速度进行数据通信。

公开(公告)号：US06714520B1

公开(公告)日：2004-03-30

申请号：US09306734

申请日：1999-05-07

申请人： Yusaku Okamura

发明人： Yusaku Okamura

IPC分类号： H04B330

CPC分类号： H04L5/006 ,  H04L5/0007 ,  H04L5/0046 ,  H04L5/143

摘要： A system for multi-carrier transmission which can secure the transmission capacity under the noise environment whose noise changes cyclically is provided. A mapping section in an ATU-C (ADSL transceiver unit, central office end) memorizes the bit allocation allocating to each carrier and transmission power allocation using for each carrier at the period that the noise generated at the data transmission to a downstream direction is large and the bit allocation allocating to each carrier and transmission power allocation using for each carrier at the period that the noise generated at the data transmission to an upstream direction is large. And a demapping section in an ATU-R (ADSL transceiver unit, remote terminal end) also memorizes the memorized bit allocation and transmission power allocation. At the time of the data transmission to the downstream direction, the bit allocation and transmission power allocation is allocated to each carrier of the high frequency band, by making the bit rate at the period that the noise generated at the data transmission to the downstream direction is small higher than the bit rate at the period that the noise is large. With this, the transmission capacity to the downstream direction can be secured.

摘要翻译： 一种用于多载波传输的系统，其可以在噪声周期性变化的噪声环境下确保传输容量。 ATU-C（ADSL收发器单元，中心局端）中的映射部分在向下游方向的数据传输产生的噪声大的时段，对每个载波存储分配给每个载波的比特分配和发送功率分配 分配给每个载波的比特分配和在数据传输到上行方向产生的噪声较大的周期的每个载波的发射功率分配。 并且ATU-R（ADSL收发器单元，远程终端端）中的解映射部分还记忆存储的位分配和传输功率分配。 在数据传输到下游方向时，通过使数据传输时产生的噪声到下行方向的比特率被分配给高频带的每个载波，比特分配和发送功率分配 在噪声较大的时期比位速率小。 由此，可以确保向下游方向的传输容量。

公开(公告)号：US06658024B1

公开(公告)日：2003-12-02

申请号：US09414162

申请日：1999-10-08

申请人： Yusaku Okamura

发明人： Yusaku Okamura

IPC分类号： H04J316

CPC分类号： H04L1/0071 ,  H04J3/1682 ,  H04L1/0041 ,  H04L1/007 ,  H04L5/0007 ,  H04L5/0046 ,  H04L5/006 ,  H04L5/143

摘要： A multiplexing/synchronization control section receives data (in which the ratio between fast data and interleave data is fixed) which are supplied from an upper layer device at a prespecified data rate, and separates the data into fast data and interleave data. An interleaving section executes interleaving to the interleave data. The fast data and the interleave data, whose data rates have been controlled by a fast data rate converter and an interleave data rate converter respectively, are supplied to a tone ordering section to be assigned to carriers of a symbol (frame). In the case where the amount of data which can be assigned to each NEXT symbol is larger than or equal to a “specific amount” which corresponds to the fixed data rate of the fast data supplied from the upper layer device, the tone ordering section assigns fast data of the “specific amount” to each symbol regardless of whether the symbol is a FEXT symbol or a NEXT symbol. In the case where the amount of data which can be assigned to each NEXT symbol is smaller than the “specific amount”, the tone ordering section assigns fast data only to each NEXT symbol and assigns fast data of an amount larger than the “specific amount” to each FEXT symbol. Thereby, delay of fast data (such as video data, voice data, data for real-time application software, etc. to which delay is harmful) is minimized both in normal conditions and in noisy conditions.

摘要翻译： 复用/同步控制部分以预先指定的数据速率接收从上层设备提供的数据（其中快速数据和交织数据之间的比例是固定的），并将数据分离成快速数据和交织数据。 交织部对交错数据执行交织。 分别由快速数据速率转换器和交错数据速率转换器控制其数据速率的快速数据和交织数据被提供给音调排序部分以分配给符号（帧）的载波。 在可以分配给每个NEXT符号的数据量大于或等于对应于从上层设备提供的快速数据的固定数据速率的“特定量”的情况下，音调排序部分 无论符号是FEXT符号还是NEXT符号，“每个符号”的“特定量”的快速数据。 在可以分配给每个NEXT符号的数据量小于“特定量”的情况下，音调排序部分仅向每个NEXT符号分配快速数据，并且分配大于“特定量”的量的快速数据 “到每个FEXT符号。 因此，在正常条件和嘈杂条件下，快速数据（例如视频数据，语音数据，延迟有害的实时应用软件的数据等）的延迟最小化。

公开(公告)号：US08249175B2

公开(公告)日：2012-08-21

申请号：US12204149

申请日：2008-09-04

申请人： Yusaku Okamura

发明人： Yusaku Okamura

IPC分类号： H04B3/00

CPC分类号： H04L5/0044 ,  H04L5/0046

摘要： The present invention provides a communication device that may suppress unnecessary break points. A communication device 200 includes a noise measuring unit 205 that measures noise occurring on a communication line 300; a communication controlling unit 202 that adjusts an SNR value of a transmission signal based on the noise measured in the noise measuring unit 205 and carries out a communication; a virtual noise determining unit 206 that determines the amount of virtual noise applied to some noise and stores the determined amount of noise in a memory unit 204; and a virtual noise applying unit 207 that applies the amount of noise stored in the memory unit 204 to the noise, wherein the virtual noise determining unit 206 dynamically divides a frequency band and determines the amount of noise of the divided frequency band as the amount of virtual noise.

摘要翻译： 本发明提供一种可以抑制不必要的断点的通信装置。 通信装置200包括噪声测量单元205，其测量在通信线路300上发生的噪声; 通信控制单元202，其基于在噪声测量单元205中测量的噪声来调整发送信号的SNR值，并进行通信; 虚拟噪声确定单元206，其确定施加到某些噪声的虚拟噪声的量，并将确定的噪声量存储在存储单元204中; 以及将存储在存储单元204中的噪声量应用于噪声的虚拟噪声施加单元207，其中虚拟噪声确定单元206动态地划分频带并将分频频带的噪声量确定为 虚拟噪音。

公开(公告)号：US07643544B2

公开(公告)日：2010-01-05

申请号：US11143662

申请日：2005-06-03

申请人： Yusaku Okamura ,  Taisuke Goto

发明人： Yusaku Okamura ,  Taisuke Goto

IPC分类号： H04B1/38

CPC分类号： H04L27/2608 ,  H04L1/0057 ,  H04L1/0061

摘要： A communication quality controller can avoid, when periodically changing noise is abruptly occurring, disconnection of a communication line used for data communication and prevent resetting of a link speed for the data communication. During the data transmission at a beforehand set link speed, a CRC error counter monitors for a predetermined period of time whether or not an error occurs in a CRC error detector at a period less than a noise period changing periodically. According to presence or absence of the error taking place during the monitoring by the counter, a periodic noise detector determines presence or absence of a periodic noise period abruptly taking place. If presence of the periodic noise is determined, disconnection of an associated communication line is avoided, and after the occurrence of the periodic noise is terminated, the data communication is conducted at the link speed.

摘要翻译： 当周期性地改变噪声突然发生时，通信质量控制器可以避免用于数据通信的通信线路的断开，并且防止数据通信的链路速度的重置。 在预先设定的链路速度的数据传输期间，CRC错误计数器在小于周期性变化的噪声周期的周期内，在预定的时间段内监视CRC错误检测器中是否发生错误。 根据在计数器监视期间发生的错误的存在或不存在，周期性噪声检测器确定突然发生周期性噪声周期的存在或不存在。 如果确定了周期性噪声的存在，则避免了相关通信线路的断开，并且在周期性噪声的发生终止之后，以链路速度进行数据通信。