公开(公告)号：US20060126707A1

公开(公告)日：2006-06-15

申请号：US11009710

申请日：2004-12-13

申请人： Patrick Duvaut ,  Ehud Langberg ,  Anupama Ramalingam

发明人： Patrick Duvaut ,  Ehud Langberg ,  Anupama Ramalingam

IPC分类号： H04L5/16

CPC分类号： H04B3/32 ,  H04B3/487

摘要： A method and apparatus implements a Virtual Exchange Reference Impact (VERI) technique to define a pattern to shape the spectrum of a cabinet deployed system to minimize its impact, e.g., FEXT, into an exchange deployed system while achieving effective cabinet system performance, e.g., in terms of data transmission rate. The invention shapes the cabinet system to replicate a self-impact of the exchange system on itself based on the known distance of the cabinet from the exchange. The shaping is required when both exchange and cabinet systems share the same bundle and exhibit overlapped bandwidths. A particular example consists of VDSL deployed from remote cabinet impacting ADSL2/ADSL2+ deployed from the exchange.

摘要翻译： 一种方法和装置实现了虚拟交换参考影响（VERI）技术，以定义一种模式来形成柜部署系统的频谱，以将其影响（例如FEXT）最小化到交换部署系统中，同时实现有效的机柜系统性能， 在数据传输率方面。 本发明根据柜与交换机的已知距离对橱柜系统进行整形以将交换系统的自身影响复制到其自身上。 交换和机柜系统共享相同的捆绑包并展示重叠的带宽时，需要进行整形。 一个特定的例子包括从远程机柜部署的VDSL，影响从交换机部署的ADSL2 / ADSL2 +。

公开(公告)号：US20050018837A1

公开(公告)日：2005-01-27

申请号：US10849569

申请日：2004-05-20

申请人： Patrick Duvaut ,  Ehud Langberg ,  Albert Rapaport ,  William Sholtz ,  Faina Shmulyian

发明人： Patrick Duvaut ,  Ehud Langberg ,  Albert Rapaport ,  William Sholtz ,  Faina Shmulyian

IPC分类号： H04L27/26 ,  H04M1/24 ,  H04M3/08 ,  H04M3/22

CPC分类号： H04L27/2602 ,  H04L27/2614

摘要： The present invention is directed to implementing theoretical foundations of frequency domain methods aiming to locally decrease the impact of aggregate side lobes of a few discrete frequency tones, in the vicinity of other “victim” frequencies. The family of frequency methods referred to makes use of one or more “canceller tones.” The “canceller tones” loads are optimized to minimize the aggregate power in the neighborhood of the victim frequencies. An exemplary method for decreasing an impact of aggregate side lobes of one or more discrete frequency tones in the vicinity of one or more victim tones comprises the steps of calculating an aggregate power of one or more side lobes of one or more disturber tones within a victim bandwidth; determining at least one optimal load to minimize the aggregate power wherein the at least one optimal load comprises a linear combination of the one or more disturber tones; and applying the at least one optimal load to one or more canceller tones for minimizing the impact of the one or more side lobes of the one or more disturber tones.

摘要翻译： 本发明旨在实现频域方法的理论基础，旨在局部地减小在其他“受害者”频率附近的几个离散频率的聚集旁瓣的影响。 所提及的频率方法族使用一个或多个“消除音”。 优化“消除音”负载以最小化受害者频率附近的总功率。 减少一个或多个受害音调附近的一个或多个离散频率音调的聚集旁瓣的影响的示例性方法包括以下步骤：计算受害者中一个或多个干扰音的一个或多个旁波的总功率 带宽; 确定至少一个最佳负载以最小化所述总功率，其中所述至少一个最佳负载包括所述一个或多个干扰调制音的线性组合; 以及将所述至少一个最佳负载应用于一个或多个消除器音调，以最小化一个或多个干扰音调的一个或多个旁瓣的影响。

公开(公告)号：US08532147B2

公开(公告)日：2013-09-10

申请号：US13554861

申请日：2012-07-20

申请人： William Scholtz ,  Ben Chan ,  Ehud Langberg ,  Shareq Rahman ,  Xy Chen ,  James Zhang

发明人： William Scholtz ,  Ben Chan ,  Ehud Langberg ,  Shareq Rahman ,  Xy Chen ,  James Zhang

IPC分类号： H04J1/02 ,  H04M11/00

CPC分类号： H04M3/4281 ,  H04M3/02 ,  H04M3/18 ,  H04M3/42365 ,  H04M7/006 ,  H04M2203/156

摘要： A method and system are provided for preventing data loss in a VoIP system. In particular, during a VoIP call, it is determined whether incoming ringing on a POTS line causes an unacceptable level of signal loss or errors. If so, for subsequent VoIP calls, the CO handling calls to the POTS line is instructed to either answer each call with a busy signal or automatically forward calls to the POTS line to the VoIP line or other selected telephone. Calling returns to normal upon ending of the VoIP call. In this manner, incoming ringing on the POTS line does not result in call dropping or lengthy retraining processes.

摘要翻译： 提供了一种防止VoIP系统中的数据丢失的方法和系统。 特别地，在VoIP呼叫期间，确定POTS线上的输入振铃是否导致不可接受的信号丢失或错误的水平。 如果是这样，对于随后的VoIP呼叫，指示对POTS线路的CO处理呼叫以忙信号来应答每个呼叫，或者自动将呼叫转移到VoIP线路或其他所选电话的POTS线路。 呼叫结束时呼叫恢复正常。 以这种方式，POTS线路上的呼入不会导致呼叫丢失或冗长的再训练过程。

公开(公告)号：US07813434B2

公开(公告)日：2010-10-12

申请号：US11559772

申请日：2006-11-14

申请人： Yan Wu ,  Lujing Cai ,  William Scholtz ,  Ehud Langberg

发明人： Yan Wu ,  Lujing Cai ,  William Scholtz ,  Ehud Langberg

IPC分类号： H04K1/10 ,  H04L27/28

CPC分类号： H04L27/2608 ,  H04L1/0006 ,  H04L1/0009 ,  H04L1/0057 ,  H04L1/0058 ,  H04L1/006 ,  H04L1/007 ,  H04L5/14

摘要： Systems and methods for performing bit loading in a dual latency data transmission system. In a computer network, such as an XDSL-based network, carrier channels are allocated between two latency paths. Error sensitive information is transmitted over a latency path employing one or more forward error correction techniques. Latency sensitive information that is relatively more tolerant of errors is transmitted over the other latency path. Rather than employing the lowest coding gain for carrier channels having the two different latency paths, the highest coding gain for each path is used by applying different target S-N-R margins for carrier channels having different latency paths.

摘要翻译： 用于在双延迟数据传输系统中执行比特加载的系统和方法。 在诸如基于XDSL的网络的计算机网络中，在两个等待时间路径之间分配载波信道。 误差敏感信息通过采用一个或多个前向纠错技术的等待时间路径传输。 通过另一个等待时间路径发送相对更容忍错误的延迟敏感信息。 不是对具有两个不同等待时间路径的载波信道采用最低的编码增益，而是通过对具有不同等待时间路径的载波信道应用不同的目标S-N-R边缘来使用每个路径的最高编码增益。

公开(公告)号：US20070110176A1

公开(公告)日：2007-05-17

申请号：US11559772

申请日：2006-11-14

申请人： Yan Wu ,  Lujing Cai ,  William Scholtz ,  Ehud Langberg

发明人： Yan Wu ,  Lujing Cai ,  William Scholtz ,  Ehud Langberg

IPC分类号： H04K1/10

CPC分类号： H04L27/2608 ,  H04L1/0006 ,  H04L1/0009 ,  H04L1/0057 ,  H04L1/0058 ,  H04L1/006 ,  H04L1/007 ,  H04L5/14

摘要： Systems and methods for performing bit loading in a dual latency data transmission system. In a computer network, such as an XDSL-based network, carrier channels are allocated between two latency paths. Error sensitive information is transmitted over a latency path employing one or more forward error correction techniques. Latency sensitive information that is relatively more tolerant of errors is transmitted over the other latency path. Rather than employing the lowest coding gain for carrier channels having the two different latency paths, the highest coding gain for each path is used by applying different target S-N-R margins for carrier channels having different latency paths.

摘要翻译： 用于在双延迟数据传输系统中执行比特加载的系统和方法。 在诸如基于XDSL的网络的计算机网络中，在两个等待时间路径之间分配载波信道。 误差敏感信息通过采用一个或多个前向纠错技术的等待时间路径传输。 通过另一个等待时间路径发送相对更容忍错误的延迟敏感信息。 不是对具有两个不同等待时间路径的载波信道采用最低的编码增益，而是通过对具有不同等待时间路径的载波信道应用不同的目标S-N-R边缘来使用每个路径的最高编码增益。

公开(公告)号：US06219386B1

公开(公告)日：2001-04-17

申请号：US09113468

申请日：1998-07-10

申请人： Daniel Amrany ,  Xian-Ying Chen ,  Ehud Langberg ,  William Scholtz

发明人： Daniel Amrany ,  Xian-Ying Chen ,  Ehud Langberg ,  William Scholtz

IPC分类号： H04L2302

CPC分类号： H04L1/0054 ,  H04L1/0041 ,  H04L1/0065

摘要： An improvement to a Reed Solomon (RS) coding scheme wherein the RS encoder and decoder is initiated based upon counting a number of timing, baud, or byte cycles from a known time stamp. The time stamp can be for example, a Tomlinson coefficient exchange frame whereby at the end of a Tomlinson coefficient exchange frame, a counter in both transmitter and receiver is actuated to begin counting a number of baud cycles. Alternatively, the counter may be initiated upon the receipt of a particular byte. Once the appropriate number of baud cycles or bytes have elapsed, the RS encoder and decoder will begin operation, thus ensuring that both RS encoding and decoding occur at the proper time, without the use of any additional framing bits.

摘要翻译： 对里德所罗门（RS）编码方案的改进，其中基于从已知时间戳计数定时，波特或字节周期的数量来启动RS编码器和解码器。 时间戳可以是例如Tomlinson系数交换帧，由此在Tomlinson系数交换帧结束时，致动发送器和接收器中的计数器以开始计数多个波特周期。 或者，可以在接收到特定字节时启动计数器。 一旦经过适当数量的波特率周期或字节，RS编码器和解码器将开始运行，从而确保RS编码和解码都在适当的时间发生，而不需要使用任何附加的成帧位。

公开(公告)号：US08228951B2

公开(公告)日：2012-07-24

申请号：US12427698

申请日：2009-04-21

申请人： William Scholtz ,  Ben Chan ,  Ehud Langberg ,  Shareq Rahman ,  Xy Chen ,  James Zhang

发明人： William Scholtz ,  Ben Chan ,  Ehud Langberg ,  Shareq Rahman ,  Xy Chen ,  James Zhang

IPC分类号： H04J1/02 ,  H04M11/00

CPC分类号： H04M3/4281 ,  H04M3/02 ,  H04M3/18 ,  H04M3/42365 ,  H04M7/006 ,  H04M2203/156

摘要： A method and system are provided for preventing data loss in a VoIP system. In particular, during a VoIP call, it is determined whether incoming ringing on a POTS line causes an unacceptable level of signal loss or errors. If so, for subsequent VoIP calls, the CO handling calls to the POTS line is instructed to either answer each call with a busy signal or automatically forward calls to the POTS line to the VoIP line or other selected telephone. Calling returns to normal upon ending of the VoIP call. In this manner, incoming ringing on the POTS line does not result in call dropping or lengthy retraining processes.

摘要翻译： 提供了一种防止VoIP系统中的数据丢失的方法和系统。 特别地，在VoIP呼叫期间，确定POTS线上的输入振铃是否导致不可接受的信号丢失或错误的水平。 如果是这样，对于随后的VoIP呼叫，指示对POTS线的CO处理呼叫以忙信号来应答每个呼叫，或者自动将呼叫转移到VoIP线路或其他所选电话的POTS线路。 呼叫结束时呼叫恢复正常。 以这种方式，POTS线路上的呼入不会导致呼叫丢失或冗长的再训练过程。

公开(公告)号：US20120287923A1

公开(公告)日：2012-11-15

申请号：US13554861

申请日：2012-07-20

申请人： William Scholtz ,  Ben Chan ,  Ehud Langberg ,  Shareq Rahman ,  Xy Chen ,  James Zhang

发明人： William Scholtz ,  Ben Chan ,  Ehud Langberg ,  Shareq Rahman ,  Xy Chen ,  James Zhang

IPC分类号： H04L12/66

CPC分类号： H04M3/4281 ,  H04M3/02 ,  H04M3/18 ,  H04M3/42365 ,  H04M7/006 ,  H04M2203/156

摘要： A method and system are provided for preventing data loss in a VoIP system. In particular, during a VoIP call, it is determined whether incoming ringing on a POTS line causes an unacceptable level of signal loss or errors. If so, for subsequent VoIP calls, the CO handling calls to the POTS line is instructed to either answer each call with a busy signal or automatically forward calls to the POTS line to the VoIP line or other selected telephone. Calling returns to normal upon ending of the VoIP call. In this manner, incoming ringing on the POTS line does not result in call dropping or lengthy retraining processes.

摘要翻译： 提供了一种防止VoIP系统中的数据丢失的方法和系统。 特别地，在VoIP呼叫期间，确定POTS线上的输入振铃是否导致不可接受的信号丢失或错误的水平。 如果是这样，对于随后的VoIP呼叫，指示对POTS线的CO处理呼叫以忙信号来应答每个呼叫，或者自动将呼叫转移到VoIP线路或其他所选电话的POTS线路。 呼叫结束时呼叫恢复正常。 以这种方式，POTS线路上的呼入不会导致呼叫丢失或冗长的再训练过程。

公开(公告)号：US20090257430A1

公开(公告)日：2009-10-15

申请号：US12427698

申请日：2009-04-21

申请人： William Scholtz ,  Ben Chan ,  Ehud Langberg ,  Shareq Rahman ,  Xy Chen ,  James Zhang

发明人： William Scholtz ,  Ben Chan ,  Ehud Langberg ,  Shareq Rahman ,  Xy Chen ,  James Zhang

IPC分类号： H04L12/66

CPC分类号： H04M3/4281 ,  H04M3/02 ,  H04M3/18 ,  H04M3/42365 ,  H04M7/006 ,  H04M2203/156

摘要： A method and system are provided for preventing data loss in a VoIP system. In particular, during a VoIP call, it is determined whether incoming ringing on a POTS line causes an unacceptable level of signal loss or errors. If so, for subsequent VoIP calls, the CO handling calls to the POTS line is instructed to either answer each call with a busy signal or automatically forward calls to the POTS line to the VoIP line or other selected telephone. Calling returns to normal upon ending of the VoIP call. In this manner, incoming ringing on the POTS line does not result in call dropping or lengthy retraining processes.

摘要翻译： 提供了一种防止VoIP系统中的数据丢失的方法和系统。 特别地，在VoIP呼叫期间，确定POTS线上的输入振铃是否导致不可接受的信号丢失或错误的水平。 如果是这样，对于随后的VoIP呼叫，指示对POTS线的CO处理呼叫以忙信号来应答每个呼叫，或者自动将呼叫转移到VoIP线路或其他所选电话的POTS线路。 呼叫结束时呼叫恢复正常。 以这种方式，POTS线路上的呼入不会导致呼叫丢失或冗长的再训练过程。

公开(公告)号：US06310896B1

公开(公告)日：2001-10-30

申请号：US09174026

申请日：1998-10-16

申请人： Ehud Langberg ,  Weimin Liu ,  Xiao Liu ,  William Scholtz

发明人： Ehud Langberg ,  Weimin Liu ,  Xiao Liu ,  William Scholtz

IPC分类号： H04J306

CPC分类号： H04L7/042 ,  H04L27/261 ,  H04L27/2655 ,  H04L27/2675

摘要： A system and method are disclosed for synchronizing a predetermined repeated data sequence contained in a first data signal at a first sample rate with the same predetermined repeated data sequence contained in a second data signal at a second sample rate in a data communications device. The system preferably includes a digital signal processor operating pursuant to logic stored on a memory. The logic includes synchronization logic which reduces the first sample rate to a predetermined correlation sample rate using a first decimator, resulting in a first reduced data signal. The synchronization logic also reduces the second sample rate to the same predetermined correlation sample rate using a second decimator, resulting in a second reduced data signal. Finally, the synchronization logic determines a sequence offset between the predetermined repeated data sequence contained in the first reduced data signal and the predetermined repeated data sequence contained in the second reduced data signal using a correlator. This sequence offset is used to determine a time delay that is applied to the second data signal, thereby synchronizing the predetermined repeated data sequence contained in the first and second data sequences.

摘要翻译： 公开了一种系统和方法，用于使包含在第一采样率的第一数据信号中的预定重复数据序列与包含在数据通信设备中的第二采样率的第二数据信号中的相同预定重复数据序列同步。 该系统优选地包括根据存储在存储器上的逻辑操作的数字信号处理器。 逻辑包括同步逻辑，其使用第一抽取器将第一采样率降低到预定的相关采样率，从而产生第一缩减的数据信号。 同步逻辑还使用第二抽取器将第二采样率降低到相同的预定相关采样率，导致第二降低的数据信号。 最后，同步逻辑使用相关器确定包含在第一简化数据信号中的预定重复数据序列与包含在第二缩减数据信号中的预定重复数据序列之间的序列偏移。 该序列偏移用于确定施加到第二数据信号的时间延迟，从而使包含在第一和第二数据序列中的预定重复数据序列同步。