公开(公告)号：US20130272314A1

公开(公告)日：2013-10-17

申请号：US13913348

申请日：2013-06-07

申请人： Martin Kuipers ,  Richard L. Goodson ,  Fred Chu

发明人： Martin Kuipers ,  Richard L. Goodson ,  Fred Chu

IPC分类号： H04J3/10

CPC分类号： H04J3/10 ,  H04L5/22 ,  H04L12/403 ,  H04L12/6418 ,  H04L47/52

摘要： A controller at a distribution point (DP) of a communication system is coupled to a plurality of customer premises (CP) transceivers via drop connections. The controller is configured to schedule upstream and downstream data transmissions across the drop connections such that they do not overlap from one drop connection to another thereby avoiding the effects of crosstalk. A flexible frame structure is used to permit dynamic scheduling changes. Overhead for the flexible frame structure is permitted to overlap on the drop connections, and a reduced bit loading is used to communicate the overhead relative to the bit loading used for data transmissions.

摘要翻译： 通信系统的分发点（DP）处的控制器通过分支连接耦合到多个客户驻地（CP）收发器。 控制器被配置为调度跨越分支连接的上游和下游数据传输，使得它们不从一个分支连接重叠到另一个，从而避免串扰的影响。 灵活的帧结构用于允许动态调度更改。 柔性帧结构的开销允许在分接连接上重叠，并且使用减少的比特加载来相对于用于数据传输的比特加载来传送开销。

公开(公告)号：US20130010585A1

公开(公告)日：2013-01-10

申请号：US13178249

申请日：2011-07-07

申请人： Fred Chu ,  Kenneth D. Ko ,  Richard Goodson ,  Kevin W. Schneider

发明人： Fred Chu ,  Kenneth D. Ko ,  Richard Goodson ,  Kevin W. Schneider

IPC分类号： H04J3/10

CPC分类号： H04B3/32

摘要： A communication system has a trunk extending from a network facility, such as a central office, with a plurality of distribution points positioned along the trunk. Each leg of the trunk defines a shared channel that permits peak data rates much greater than what would be achievable without channel sharing. As an example, the connections of each respective trunk leg may be bonded. Further, the same modulation format and crosstalk vectoring are used for each leg of the trunk. The crosstalk vectoring cancels both far-end crosstalk (FEXT) that couples between connections of a given trunk leg and crossover crosstalk that couples between one trunk leg and another. In addition, logic determines an amount of excess capacity available for each leg of the trunk and controls error correction based on the determined excess capacity.

摘要翻译： 通信系统具有从诸如中心局的网络设施延伸的中继线，沿着中继线定位多个分配点。 中继线的每一条都定义了一个共享信道，允许峰值数据速率远远大于没有信道共享可实现的数据速率。 作为示例，每个相应的中继支路的连接可以被联结。 此外，相同的调制格式和串扰向量被用于中继线的每个支路。 串扰向量消除了在给定中继线的连接之间耦合的远端串扰（FEXT）和耦合在一个中继线与另一个之间的交叉串扰。 此外，逻辑决定了可用于中继线的每个支路的超量容量的量，并且基于所确定的过剩容量来控制纠错。

公开(公告)号：US20120243404A1

公开(公告)日：2012-09-27

申请号：US13410712

申请日：2012-03-02

申请人： Richard Goodson ,  Arlynn Wayne Wilson ,  Fred Chu

发明人： Richard Goodson ,  Arlynn Wayne Wilson ,  Fred Chu

IPC分类号： H04L29/14 ,  H04L12/28 ,  H04M9/08 ,  H04L12/56 ,  H04L12/26

CPC分类号： H04M3/18 ,  H04B3/32 ,  H04L27/2601 ,  H04L2012/5675 ,  H04M3/306 ,  H04M3/34 ,  H04W24/02

摘要： A communication system comprises a plurality of line cards having transceivers coupled to a plurality of subscriber lines. Each line card has at least one active transceiver within the same vectoring group, and each line card also has vector logic capable of cancelling crosstalk induced by an active transceiver that is a member of the vectoring group. Further, the line cards are coupled to one another via a ring connection across which vectoring information is passed from one line card to the next. In the event of a failure of one of the line cards, the failed card is bypassed by the vectoring stream so that the operational line cards can continue crosstalk vectoring operations despite such failure.

摘要翻译： 通信系统包括具有耦合到多个用户线的收发器的多个线路卡。 每个线路卡在相同的向量组内具有至少一个有源收发信机，并且每个线路卡还具有能够消除由作为向量组的成员的有源收发信机所引起的串扰的向量逻辑。 此外，线卡通过环形连接彼此耦合，通过该环连接向导信息从一个线卡传递到下一个线卡。 在线卡之一发生故障的情况下，故障卡被矢量流旁路，使得即使发生故障，运行线路卡也可以继续进行串扰向量运算。

公开(公告)号：US20120224683A1

公开(公告)日：2012-09-06

申请号：US13411066

申请日：2012-03-02

申请人： Richard Goodson ,  Arlynn Wayne Wilson ,  Fred Chu

发明人： Richard Goodson ,  Arlynn Wayne Wilson ,  Fred Chu

IPC分类号： H04M9/08

CPC分类号： H04M3/18 ,  H04B3/32 ,  H04L27/2601 ,  H04L2012/5675 ,  H04M3/306 ,  H04M3/34 ,  H04W24/02

摘要： A discrete multi-tone (DMT) transceiver communicates tones across a subscriber line. Vectoring is employed in an effort to reduce the effects of crosstalk. However, for some tones, such as tones significantly affected by radio frequency interference (RFI) or other forms of alien noise, vectoring may actually introduce distortions such that the vectoring degrades rather than improves overall signal quality. Control logic of the DMT transceiver is configured to sense when tones are affected by significant levels of alien noise and to exclude such tones from vectoring, thereby improving signal quality for such tones. The control logic also may lower the constellation densities of such tones in order to accommodate the vectoring exclusions applied to such tones.

摘要翻译： 离散多音（DMT）收发器在用户线路上通信音调。 矢量化是为了减少串扰的影响。 然而，对于某些音调，例如明显受射频干扰（RFI）或其他形式的外来噪声影响的音调，向量可能实际上引入失真，使得向量降级而不是提高整体信号质量。 DMT收发器的控制逻辑被配置为感测音调何时受到显着水平的外来噪声的影响，并且排除这样的音调不被矢量化，从而提高这种音调的信号质量。 控制逻辑也可以降低这些音调的星座密度，以适应应用于这种音调的向量排除。

公开(公告)号：US07483481B1

公开(公告)日：2009-01-27

申请号：US10930343

申请日：2004-08-31

申请人： Ayman Ghobrial ,  Fred Chu ,  Michael D. Turner ,  Kevin W. Schneider

发明人： Ayman Ghobrial ,  Fred Chu ,  Michael D. Turner ,  Kevin W. Schneider

IPC分类号： H03H7/30

CPC分类号： H04L25/03343 ,  H04L2025/03802

摘要： A system for adaptively updating precoder taps comprises a first signal path, a second signal path, a delay mechanism, and logic. The first signal path is configured to receive encoded signals. The first signal path has a decoder that is configured to decode the encoded signals thereby recovering data originally transmitted from a remote transmitter. The delay mechanism is configured to receive and delay the encoded signals. The second signal path is connected in parallel with the first signal path and is configured to receive the encoded signals delayed by the delay mechanism. The second signal path has an adaptive filter configured to filter the encoded signals received by the second signal path based on a set of coefficients of the adaptive filter. The adaptive filter is configured to adaptively update the coefficients based on the data recovered by the first signal path. The logic is configured to adaptively generate new precoder taps based on the coefficients and to transmit the new precoder taps to a precoder.

摘要翻译： 用于自适应地更新预编码器抽头的系统包括第一信号路径，第二信号路径，延迟机制和逻辑。 第一信号路径被配置为接收编码信号。 第一信号路径具有解码器，其被配置为对编码的信号进行解码，从而恢复最初从远程发射机发送的数据。 延迟机构被配置为接收和延迟编码的信号。 第二信号路径与第一信号路径并联连接，并被配置为接收延迟机制延迟的编码信号。 第二信号路径具有自适应滤波器，其被配置为基于自适应滤波器的一组系数来对由第二信号路径接收的编码信号进行滤波。 自适应滤波器被配置为基于由第一信号路径恢复的数据自适应地更新系数。 逻辑被配置为基于系数自适应地生成新的预编码器抽头，并将新的预编码器抽头发送到预编码器。

公开(公告)号：US09742905B1

公开(公告)日：2017-08-22

申请号：US12839402

申请日：2010-07-19

申请人： Kevin W. Schneider ,  Fred Chu ,  Kenneth D. Ko ,  Richard Goodson

发明人： Kevin W. Schneider ,  Fred Chu ,  Kenneth D. Ko ,  Richard Goodson

IPC分类号： H04M3/00

CPC分类号： H04M19/00 ,  H04L12/18 ,  H04L12/2861 ,  H04L12/2867 ,  H04L12/2869 ,  H04L12/2878 ,  H04M3/005 ,  H04M3/007 ,  H04M11/062 ,  Y02D50/30

摘要： The present disclosure generally pertains to systems and methods for communicating data. In one exemplary embodiment, a system has a high-speed channel, such as an optical fiber, between a network facility, such as a central office (CO), and a first intermediate point between the network facility and a plurality of customer premises (CP). Digital communication links, such as DSL links, are used to carry data between the first intermediate point, such as a feeder distribution interface (FDI), and a second intermediate point, such as the Distribution Point (DP). Non-shared links may then carry the data from the second intermediate point to the CPs. The links between the two intermediate points are bonded to create a high-speed, shared data channel that permits peak data rates much greater than what would be achievable without bonding. In some embodiments, multicast data flows may be prioritized and transmitted across a set of connections to each of the intermediate points. In addition, it is possible to power components at the intermediate points from one or more of the CPs.

公开(公告)号：US09143195B2

公开(公告)日：2015-09-22

申请号：US13178249

申请日：2011-07-07

申请人： Fred Chu ,  Kenneth D. Ko ,  Richard Goodson ,  Kevin W. Schneider

发明人： Fred Chu ,  Kenneth D. Ko ,  Richard Goodson ,  Kevin W. Schneider

IPC分类号： H04J1/12 ,  H04L12/66 ,  H04B3/32

CPC分类号： H04B3/32

摘要： A communication system has a trunk extending from a network facility, such as a central office, with a plurality of distribution points positioned along the trunk. Each leg of the trunk defines a shared channel that permits peak data rates much greater than what would be achievable without channel sharing. As an example, the connections of each respective trunk leg may be bonded. Further, the same modulation format and crosstalk vectoring are used for each leg of the trunk. The crosstalk vectoring cancels both far-end crosstalk (FEXT) that couples between connections of a given trunk leg and crossover crosstalk that couples between one trunk leg and another. In addition, logic determines an amount of excess capacity available for each leg of the trunk and controls error correction based on the determined excess capacity.

摘要翻译： 通信系统具有从诸如中心局的网络设施延伸的中继线，沿着中继线定位多个分配点。 中继线的每一条都定义了一个共享信道，允许峰值数据速率远远大于没有信道共享可实现的数据速率。 作为示例，每个相应的中继支路的连接可以被联结。 此外，相同的调制格式和串扰向量被用于中继线的每个支路。 串扰向量消除了在给定中继线的连接之间耦合的远端串扰（FEXT）和耦合在一个中继线与另一个之间的交叉串扰。 此外，逻辑决定了可用于中继线的每个支路的超量容量的量，并且基于所确定的过剩容量来控制纠错。

公开(公告)号：US09088642B2

公开(公告)日：2015-07-21

申请号：US13411053

申请日：2012-03-02

申请人： Richard Goodson ,  Arlynn Wayne Wilson ,  Fred Chu

发明人： Richard Goodson ,  Arlynn Wayne Wilson ,  Fred Chu

IPC分类号： H04M3/22 ,  H04M3/18 ,  H04W24/02 ,  H04B3/32 ,  H04M3/34 ,  H04L27/26 ,  H04L12/70 ,  H04M3/30

CPC分类号： H04M3/18 ,  H04B3/32 ,  H04L27/2601 ,  H04L2012/5675 ,  H04M3/306 ,  H04M3/34 ,  H04W24/02

摘要： A communication system comprises a plurality of line cards having transceivers coupled to a plurality of subscriber lines. Each line card has at least one active transceiver within the same vectoring group, and each line card also has vector logic capable of cancelling crosstalk induced by an active transceiver that is a member of the vectoring group. In the event of a vectoring fault that prevents a line card from receiving vectoring information from at least on other line card, the vector logic is configured to disable vectoring for the interferers affected by the error in order to prevent vectoring operations based on obsolete vectoring coefficients from adversely affecting the quality of the communicated signals. The transceivers communicating signals affected by the suspended vectoring operations are also configured to adjust their constellation density profiles, thereby reducing their data rates, to accommodate the increased noise level resulting from the loss of vectoring. By handling the vectoring fault in such manner, communication can continue without requiring a retrain.

摘要翻译： 通信系统包括具有耦合到多个用户线的收发器的多个线路卡。 每个线路卡在相同的向量组内具有至少一个有源收发器，并且每个线路卡还具有能够消除由作为向量组的成员的有源收发器引起的串扰的向量逻辑。 在矢量故障的情况下，阻止线卡从至少在其他线路卡上接收矢量信息，向量逻辑被配置为禁止由误差影响的干扰源的矢量化，以便防止基于过时向量系数的矢量化操作 从不利地影响通信信号的质量。 传送受暂停引导操作影响的信号的收发信机也被配置为调整其星座密度分布，从而降低其数据速率，以适应由矢量化损失引起的增加的噪声电平。 通过以这种方式处理向量故障，通信可以继续而不需要重新训练。

公开(公告)号：US09083785B2

公开(公告)日：2015-07-14

申请号：US13411066

申请日：2012-03-02

申请人： Richard Goodson ,  Arlynn Wayne Wilson ,  Fred Chu

发明人： Richard Goodson ,  Arlynn Wayne Wilson ,  Fred Chu

IPC分类号： H04M9/08 ,  H04M3/18 ,  H04W24/02 ,  H04B3/32 ,  H04M3/34 ,  H04L27/26 ,  H04L12/70 ,  H04M3/30

CPC分类号： H04M3/18 ,  H04B3/32 ,  H04L27/2601 ,  H04L2012/5675 ,  H04M3/306 ,  H04M3/34 ,  H04W24/02

摘要： A discrete multi-tone (DMT) transceiver communicates tones across a subscriber line. Vectoring is employed in an effort to reduce the effects of crosstalk. However, for some tones, such as tones significantly affected by radio frequency interference (RFI) or other forms of alien noise, vectoring may actually introduce distortions such that the vectoring degrades rather than improves overall signal quality. Control logic of the DMT transceiver is configured to sense when tones are affected by significant levels of alien noise and to exclude such tones from vectoring, thereby improving signal quality for such tones. The control logic also may lower the constellation densities of such tones in order to accommodate the vectoring exclusions applied to such tones.

摘要翻译： 离散多音（DMT）收发器在用户线路上通信音调。 矢量化是为了减少串扰的影响。 然而，对于某些音调，例如明显受射频干扰（RFI）或其他形式的外来噪声影响的音调，向量可能实际上引入失真，使得向量降级而不是提高整体信号质量。 DMT收发器的控制逻辑被配置为感测音调何时受到显着水平的外来噪声的影响，并且排除这样的音调不被矢量化，从而提高这种音调的信号质量。 控制逻辑也可以降低这些音调的星座密度，以适应应用于这种音调的向量排除。

公开(公告)号：US08854943B2

公开(公告)日：2014-10-07

申请号：US13411378

申请日：2012-03-02

申请人： Richard Goodson ,  Arlynn Wayne Wilson ,  Fred Chu ,  Kevin W. Schneider

发明人： Richard Goodson ,  Arlynn Wayne Wilson ,  Fred Chu ,  Kevin W. Schneider

IPC分类号： H04W24/02 ,  H04M3/18 ,  H04B3/32 ,  H04M3/34 ,  H04L12/70 ,  H04M3/30

CPC分类号： H04M3/18 ,  H04B3/32 ,  H04L27/2601 ,  H04L2012/5675 ,  H04M3/306 ,  H04M3/34 ,  H04W24/02

摘要： A communication system comprises a plurality of line cards having transceivers coupled to a plurality of subscriber lines. Each line card has at least one transceiver within the same vectoring group, and each line card also has vector logic capable of cancelling crosstalk induced by a tone communicated by any member of the vector group. Further, the line cards are coupled to one another via a data connection across which a vectoring stream carrying vectoring information from one line card to the next. The bandwidth of the vectoring stream is reduced by dynamically adjusting time slots of the vectoring stream based on bit loading for the communicated tones.

摘要翻译： 通信系统包括具有耦合到多个用户线的收发器的多个线路卡。 每个线卡在同一向量组内具有至少一个收发器，并且每个线卡还具有能够消除由矢量组的任何成员通信的音调引起的串扰的向量逻辑。 此外，线卡通过数据连接相互耦合，数据连接通过数据连接将载体信息从一个线卡传送到下一个线卡。 通过基于所传送的音调的比特加载来动态地调整向量化流的时隙来减少向量化流的带宽。