公开(公告)号：US09742574B2

公开(公告)日：2017-08-22

申请号：US13587494

申请日：2012-08-16

申请人： Adriaan J. De Lind Van Wijngaarden ,  Bilgehan Erman ,  Vanita K Katkar ,  Elissa P. Matthews ,  Ronald L. Sharp

发明人： Adriaan J. De Lind Van Wijngaarden ,  Bilgehan Erman ,  Vanita K Katkar ,  Elissa P. Matthews ,  Ronald L. Sharp

IPC分类号： H04N7/14 ,  H04L12/18 ,  H04M3/56 ,  H04N7/15 ,  H04L29/08 ,  H04M7/00 ,  H04L29/06

CPC分类号： H04L12/1827 ,  H04L12/1822 ,  H04L65/403 ,  H04L67/104 ,  H04M3/567 ,  H04M7/0063 ,  H04N7/148 ,  H04N7/15

摘要： A peer-to-peer forwarding node supports the operation of a teleconference across a telecommunications network. The telecommunications network comprises a plurality of nodes including one or more source locations and one or more remote locations. The teleconference includes teleconference participants at each of the source and remote locations. The peer-to-peer forwarding node is located at a given one of the plurality of nodes. The peer-to-peer forwarding node comprises a receiver and a transmitter. The receiver receives a request from a telecommunications controller to provide peer-to-peer forwarding of a media signal to be received from a first one of the source locations to a first one of the remote locations and which further receives the media signal from the first one of said source locations. The transmitter forwards the media signal from the first one of the source locations to the first one of the remote locations.

公开(公告)号：US08892983B2

公开(公告)日：2014-11-18

申请号：US12612674

申请日：2009-11-04

申请人： Adriaan J. De Lind Van Wijngaarden ,  Andreas Bernhard Zottmann

发明人： Adriaan J. De Lind Van Wijngaarden ,  Andreas Bernhard Zottmann

IPC分类号： H03M13/09 ,  H04L1/00 ,  H03M13/00

CPC分类号： H03M13/09 ,  H03M13/611 ,  H03M13/6522 ,  H03M13/6527 ,  H04L1/0041 ,  H04L1/0076 ,  H04L1/0084

摘要： A method processes a data packet in a first sequence of disjoint original segments of the same length. The method includes modifying a first of the original segments of the first sequence by modifying one or more symbols therein. A start of the data packet is located in the first of the original segments and is positioned after a first digital data symbol therein. The method also includes modifying a last of the original segments of the first sequence by modifying one or more digital data symbols therein. An end of the data packet is located in the last of the original segments and is located before the last digital data symbol therein. The method also includes determining a remainder sequence by effectively performing a polynomial division on a second sequence of disjoint segments that are derived from the first sequence. Each segment of the second sequence corresponds to and is derived from one of the original segments of the first sequence. The segments of the second sequence have the length of the original segments of the first sequence. A first of the derived segments of the second sequence is the modified first of the original segments. A last of the derived segments of the second sequence is derived from the modified last of the original segments.

摘要翻译： 一种方法处理相同长度的不相交的原始段的第一序列中的数据分组。 该方法包括通过修改其中的一个或多个符号来修改第一序列的第一个原始段。 数据分组的开始位于第一个原始分段中，并且位于其中的第一数字数据符号之后。 该方法还包括通过修改其中的一个或多个数字数据符号来修改第一序列的最后一个原始段。 数据包的结尾位于最后的原始段中，并且位于其中的最后一个数字数据符号之前。 该方法还包括通过有效地执行从第一序列导出的第二不相交段序列上的多项式除法来确定余数序列。 第二序列的每个片段对应于并且从第一序列的原始片段之一导出。 第二序列的片段具有第一序列的原始片段的长度。 第二个序列的导出段中的第一个是原始段的修改的第一个段。 第二个序列的最后导出段是从修改的最后一个原始段导出的。

公开(公告)号：US08289365B2

公开(公告)日：2012-10-16

申请号：US12383901

申请日：2009-03-30

申请人： Adriaan J. De Lind Van Wijngaarden ,  Bilgehan Erman ,  Vanita K Katkar ,  Elissa P. Matthews ,  Ronald L. Sharp

发明人： Adriaan J. De Lind Van Wijngaarden ,  Bilgehan Erman ,  Vanita K Katkar ,  Elissa P. Matthews ,  Ronald L. Sharp

IPC分类号： H04N7/14

CPC分类号： H04L12/1827 ,  H04L12/1822 ,  H04L65/403 ,  H04L67/104 ,  H04M3/567 ,  H04M7/0063 ,  H04N7/148 ,  H04N7/15

摘要： A teleconferencing system in which a teleconference controller advantageously uses information relating to the network topology layout of remote nodes which are to participate in a teleconference, and then advantageously directs the transmission of video and/or audio streams from a source node to an identified subset of the remote nodes based on the capabilities of the nodes and the network links. These nodes which initially receive the video and/or audio streams then advantageously forward the streams in turn to other nodes in their vicinity using peer-to-peer network connectivity techniques. The identification of the subset of nodes which serve as peer-to-peer forwarding nodes may be based on node activity, node service capacity, the impact on network links between the node and the requester, the distance and/or latency between the node and the requester, and the ability of the node to meet requests including video transcoding requests.

摘要翻译： 电话会议系统，其中电话会议控制器有利地使用与参与电话会议的远程节点的网络拓扑布局相关的信息，然后有利地将视频和/或音频流从源节点传输到所识别的子集 基于节点和网络链路的能力的远程节点。 最初接收视频和/或音频流的这些节点有利地使用点对点网络连接技术将流反向转移到其附近的其他节点。 用作对等转发节点的节点子集的识别可以基于节点活动，节点服务容量，对节点和请求者之间的网络链路的影响，节点与节点之间的距离和/或等待时间 请求者以及节点满足包括视频转码请求的请求的能力。

公开(公告)号：US20100245534A1

公开(公告)日：2010-09-30

申请号：US12383901

申请日：2009-03-30

申请人： Adriaan J. De Lind Van Wijngaarden ,  Bilgehan Erman ,  Vanita K. Katkar ,  Elissa P. Matthews ,  Ronald L. Sharp

发明人： Adriaan J. De Lind Van Wijngaarden ,  Bilgehan Erman ,  Vanita K. Katkar ,  Elissa P. Matthews ,  Ronald L. Sharp

IPC分类号： H04N7/14 ,  H04M3/42

CPC分类号： H04L12/1827 ,  H04L12/1822 ,  H04L65/403 ,  H04L67/104 ,  H04M3/567 ,  H04M7/0063 ,  H04N7/148 ,  H04N7/15

摘要： A teleconferencing system in which a teleconference controller advantageously uses information relating to the network topology layout of remote nodes which are to participate in a teleconference, and then advantageously directs the transmission of video and/or audio streams from a source node to an identified subset of the remote nodes based on the capabilities of the nodes and the network links. These nodes which initially receive the video and/or audio streams then advantageously forward the streams in turn to other nodes in their vicinity using peer-to-peer network connectivity techniques. The identification of the subset of nodes which serve as peer-to-peer forwarding nodes may be based on node activity, node service capacity, the impact on network links between the node and the requester, the distance and/or latency between the node and the requester, and the ability of the node to meet requests including video transcoding requests.

摘要翻译： 电话会议系统，其中电话会议控制器有利地使用与参与电话会议的远程节点的网络拓扑布局相关的信息，然后有利地将视频和/或音频流从源节点传输到所识别的子集 基于节点和网络链路的能力的远程节点。 最初接收视频和/或音频流的这些节点有利地使用点对点网络连接技术将流反向转移到其附近的其他节点。 用作对等转发节点的节点子集的识别可以基于节点活动，节点服务容量，对节点和请求者之间的网络链路的影响，节点与节点之间的距离和/或等待时间 请求者以及节点满足包括视频转码请求的请求的能力。

公开(公告)号：US07331009B2

公开(公告)日：2008-02-12

申请号：US10778765

申请日：2004-02-13

申请人： Alexei Ashikhmin ,  Adriaan J. De Lind Van Wijngaarden ,  Nandu Gopalakrishnan ,  Jaehyeong Kim ,  Emina Soljanin

发明人： Alexei Ashikhmin ,  Adriaan J. De Lind Van Wijngaarden ,  Nandu Gopalakrishnan ,  Jaehyeong Kim ,  Emina Soljanin

IPC分类号： G08C25/02 ,  H04L1/18

CPC分类号： H04L1/1819 ,  H04L1/1845 ,  H04L1/20

摘要： A method is provided to accurately predict the probability of successfully recovering frames of (coded) information received over a wireless link, without having to decode the frame. This method includes receiving a first encoded signal and predicting link errors based on characteristics of the first encoded signal and variations in these characteristics before decoding the first encoded signal.

摘要翻译： 提供了一种方法来准确地预测成功地恢复通过无线链路接收的（编码）信息的帧的概率，而不必对帧进行解码。 该方法包括：在解码第一编码信号之前，基于第一编码信号的特性和这些特性的变化来接收第一编码信号和预测链路误差。

公开(公告)号：US06516436B1

公开(公告)日：2003-02-04

申请号：US09483056

申请日：2000-01-13

申请人： Bharat P. Dave ,  Adriaan J. De Lind Van Wijngaarden ,  Brij B. Garg ,  James S. Lavranchuk ,  Boris B. Stefanov ,  Rudiger L. Urbanke

发明人： Bharat P. Dave ,  Adriaan J. De Lind Van Wijngaarden ,  Brij B. Garg ,  James S. Lavranchuk ,  Boris B. Stefanov ,  Rudiger L. Urbanke

IPC分类号： H03M1300

CPC分类号： H04L1/0057 ,  H04L1/0041 ,  H04L1/0045 ,  H04L1/0071 ,  H04L1/06 ,  H04L1/22 ,  H04L25/14 ,  H04L2001/0096

摘要： Error control coding is applied to data streams transmitted through transmission equipment such as a telecommunications switch having a distributed synchronous switch fabric. Each k-symbol dataword is encoded to generate an n-symbol codeword that is then sliced for transmission through the transmission equipment. After routing, error-correction decoding is applied to the resulting routed n-symbol codeword to detect and correct one or more errors in the codeword to generate a k-symbol routed dataword that is identical to the original incoming dataword. Depending on the coding scheme, different types and numbers of errors can be corrected in each codeword. For example, for Reed-Solomon [12, 8, 5] coding with Galois field (24), corrections can be made for up to four erasures with no random errors, up to two erasures and one; random error, or up to two random errors with no erasures. In this way, error-less fault tolerance can be provided that ensures the accuracy of transmission processing in the event of certain combinations of errors. Preferred embodiments involve temporal sharing of components (for more cost effective implementations) and shuffling of data (to increase error-correction coverage).

摘要翻译： 错误控制编码被应用于通过诸如具有分布式同步交换结构的电信交换机的传输设备传输的数据流。 每个k符号数据字被编码以产生一个n符号码字，然后将其分片以便通过传输设备传输。 在路由之后，纠错解码被应用于所产生的路由的n符号码字，以检测和纠正码字中的一个或多个错误，以产生与原始输入数据字相同的k符号路由数据字。 根据编码方案，可以在每个码字中校正不同类型和数量的错误。 例如，对于使用伽罗瓦域（24）的里德 - 所罗门[12,8,5]编码，可以进行多达四次擦除的校正，无任何随机错误，最多两次擦除和一次; 随机错误或最多两个随机错误，无擦除。 以这种方式，可以提供无错误容错，以确保在出现某些错误组合的情况下传输处理的准确性。 优选实施例涉及组件的时间共享（用于更成本有效的实现）和数据的混洗（以增加纠错覆盖）。

公开(公告)号：US08326152B2

公开(公告)日：2012-12-04

申请号：US12760870

申请日：2010-04-15

申请人： Doutje T. Van Veen ,  Adriaan J. De Lind Van Wijngaarden ,  Dusan Suvakovic

发明人： Doutje T. Van Veen ,  Adriaan J. De Lind Van Wijngaarden ,  Dusan Suvakovic

IPC分类号： H04B10/00 ,  H04B10/08 ,  H04J14/00 ,  H04J14/02

CPC分类号： H04J14/02 ,  H04B10/07955 ,  H04J3/1694

摘要： A signal strength corresponding to an incoming optical burst from each of a plurality of optical nodes is measured. The measurements can be performed at system start-up, configuration/installation of the optical nodes and/or at certain intervals of operation of the optical nodes. Signal strength information for the optical nodes based on the measurements is stored in memory. When scheduling the optical nodes for transmission, a preferred transmission order is determined in response to the stored signal strength information. In an embodiment, the preferred order is determined to reduce differences in signal strength levels between consecutive optical bursts.

摘要翻译： 测量与来自多个光学节点中的每一个的输入光脉冲串对应的信号强度。 可以在系统启动，光节点的配置/安装和/或在光节点的特定操作间隔期间进行测量。 基于测量的光节点的信号强度信息被存储在存储器中。 当调度用于传输的光节点时，响应于所存储的信号强度信息来确定优选传输顺序。 在一个实施例中，确定优选顺序以减少连续的光脉冲串之间的信号强度电平的差异。

公开(公告)号：US07860044B2

公开(公告)日：2010-12-28

申请号：US12130253

申请日：2008-05-30

申请人： Alexei E. Ashikhmin ,  Hungkei Keith Chow ,  Adriaan J. De Lind Van Wijngaarden ,  Jan Willem Hellenthal ,  Jean Gerardus Leonardus Jennen ,  Gerhard Guenter Theodor Kramer ,  Carl Robert Posthuma ,  Harmanus van Tellingen ,  Philip Alfred Whiting ,  Miroslav Zivkovic

发明人： Alexei E. Ashikhmin ,  Hungkei Keith Chow ,  Adriaan J. De Lind Van Wijngaarden ,  Jan Willem Hellenthal ,  Jean Gerardus Leonardus Jennen ,  Gerhard Guenter Theodor Kramer ,  Carl Robert Posthuma ,  Harmanus van Tellingen ,  Philip Alfred Whiting ,  Miroslav Zivkovic

IPC分类号： H04B7/204

CPC分类号： H04L5/14 ,  H04J3/0682 ,  H04L5/0023 ,  H04L5/0058

摘要： A multi-channel processing module is arranged in series with multiple channels of a communication system. The processing module synchronizes downstream symbols among the channels, and synchronizes downstream symbols for at least a given one of the channels with upstream symbols for that channel. The synchronization of downstream symbols among the channels and the synchronization of downstream symbols for at least the given channel with upstream symbols for that channel are collectively achieved by adjusting downstream and upstream adjustable delay elements associated with respective downlink and uplink signal paths in the multi-channel processing module. The channels may comprise respective subscriber lines of a DSL communication system.

摘要翻译： 多通道处理模块与通信系统的多个通道串联布置。 处理模块同步信道之间的下游符号，并且为至少给定的一个信道同步用于该信道的上行符号的下游符号。 通过调整与多个信道中的相应下行链路和上行链路信号路径相关联的下游和上游可调节延迟单元，共同地实现至少给定信道的下行符号与下行符号之间的同步，以及用于该信道的上行符号的下游符号的同步 处理模块。 信道可以包括DSL通信系统的相应用户线路。

公开(公告)号：US07809070B2

公开(公告)日：2010-10-05

申请号：US11753332

申请日：2007-05-24

申请人： Alexei Ashikhmin ,  Philip Alfred Whiting ,  Adriaan J. De Lind Van Wijngaarden

发明人： Alexei Ashikhmin ,  Philip Alfred Whiting ,  Adriaan J. De Lind Van Wijngaarden

IPC分类号： H04L27/28

CPC分类号： H04B3/487 ,  H04L27/2601

摘要： Techniques are disclosed for measuring crosstalk between at least two communication channels of a communication system. A receiver of the system receives a signal over a given one of the communication channels from a transmitter of the system. The receiver correlates the received signal with a sequence of time-domain signals associated with another of the communication channels, and generates a measure of crosstalk between the given communication channel and the other communication channel based on the correlation between the received signal and the sequence of time-domain signals. The sequence of time-domain signals may be selected from a designated set of M-sequences.

摘要翻译： 公开了用于测量通信系统的至少两个通信信道之间的串扰的技术。 系统的接收机从系统的发射器接收通过给定的一个通信信道的信号。 接收器将接收到的信号与与另一个通信信道相关联的时域信号序列进行相关，并且基于接收信号和序列之间的相关性，生成给定通信信道与另一通信信道之间的串扰量度 时域信号。 可以从指定的一组M序列中选择时域信号的序列。

公开(公告)号：US20090116582A1

公开(公告)日：2009-05-07

申请号：US11934347

申请日：2007-11-02

申请人： Alexei Ashikhmin ,  Adriaan J. De Lind Van Wijngaarden ,  Gerhard Guenter Theodor Kramer ,  Philip Alfred Whiting ,  Miroslav Zivkovic

发明人： Alexei Ashikhmin ,  Adriaan J. De Lind Van Wijngaarden ,  Gerhard Guenter Theodor Kramer ,  Philip Alfred Whiting ,  Miroslav Zivkovic

IPC分类号： H04L25/49

CPC分类号： H04B3/32 ,  H04B3/487

摘要： Techniques are disclosed that efficiently obtain channel crosstalk estimates in DSL systems and other communication systems that may include unsynchronized channels. For example, a method includes obtaining a first set of estimated measures of crosstalk for a first portion of a plurality of communication channels over which data signals are to be transmitted from a transmitter to a plurality of receivers, and interpolating a second set of estimated measures of crosstalk for a second portion of the plurality of communication channels based on the first set of estimated measures of crosstalk. The first portion of the plurality of communication channels may be a subset of the plurality of communication channels and the second portion of the plurality of communication channels is a remainder of the plurality of communication channels. Each estimated measure of crosstalk may relate to at least one tone associated with at least one of the plurality of communication channels.

摘要翻译： 公开了在DSL系统和可能包括不同步信道的其他通信系统中有效地获得信道串扰估计的技术。 例如，一种方法包括获得第一组估计的多个通信信道的第一部分的串扰测量值，数据信号将从该发送器发送到多个接收机，并且内插第二组估计度量 基于所述第一组估计的串扰测量值，所述多个通信信道的第二部分的串扰。 多个通信信道的第一部分可以是多个通信信道的子集，并且多个通信信道的第二部分是多个通信信道的剩余部分。 每个估计的串扰测量可以涉及与多个通信信道中的至少一个相关联的至少一个音调。