Method and system for performing timing recovery in a digital communication system
    81.
    发明授权
    Method and system for performing timing recovery in a digital communication system 有权
    用于在数字通信系统中执行定时恢复的方法和系统

    公开(公告)号:US07933323B2

    公开(公告)日:2011-04-26

    申请号:US11537108

    申请日:2006-09-29

    IPC分类号: H03K5/159

    CPC分类号: H04L7/0062

    摘要: Processing signals in a digital communication may include equalizing a signal in a timing-recovery system using a frequency domain equalizer. The frequency domain equalizer may be a frequency domain adaptive filter that adapts using a least-mean-square algorithm where at least one tap-weight that corresponds to a pre-cursor may be constrained to zero. The processing may include recovering timing information using a Mueller/Muller timing recovery algorithm that may be aided by using a pre-filter before the equalizer.

    摘要翻译: 处理数字通信中的信号可以包括使用频域均衡器来均衡定时恢复系统中的信号。 频域均衡器可以是频域自适应滤波器,其使用最小均方算法进行调整,其中对应于前导的至少一个抽头可以被约束为零。 处理可以包括使用Mueller / Muller定时恢复算法来恢复定时信息,该算法可以通过在均衡器之前使用预滤波器来辅助。

    Method and system for low power idle signal transmission in ethernet networks
    82.
    发明授权
    Method and system for low power idle signal transmission in ethernet networks 有权
    以太网网络中低功耗空闲信号传输的方法和系统

    公开(公告)号:US07920597B2

    公开(公告)日:2011-04-05

    申请号:US11859385

    申请日:2007-09-21

    IPC分类号: H04J3/06

    摘要: Aspects of a method and system for low power IDLE signal transmission in Ethernet networks are provided. In this regard, during time periods between transmissions of actual data by a local Ethernet link partner, the local Ethernet Link partner may generate one or more signals, in place of a standard Ethernet IDLE signal, that enable synchronization between Ethernet link partners. In this manner, the generated signals may enable reducing power consumption as compared to standard Ethernet IDLE signals. Accordingly, link activity may be monitored to enable detecting periods when there may be no actual data for transmission and the generated signals may be transmitted. The generated signals may be transmitted at a reduced symbol rate as compared to standard Ethernet IDLE signals. The generated signals may be transmitted via fewer network links as compared to standard Ethernet IDLE signals.

    摘要翻译: 提供了以太网中用于低功率IDLE信号传输的方法和系统的方面。 在这方面,在本地以太网链路伙伴发送实际数据之间的时间段期间,本地以太网链路伙伴可以生成一个或多个信号来代替以太网链路伙伴之间的同步的标准以太网IDLE信号。 以这种方式,与标准以太网IDLE信号相比,产生的信号可以实现降低功耗。 因此,可以监视链路活动以使得能够在不存在用于传输的实际数据的情况下检测周期,并且可以发送生成的信号。 与标准以太网IDLE信号相比,所生成的信号可以以减小的符号速率传输。 与标准以太网IDLE信号相比,所生成的信号可以通过较少的网络链路传输。

    System and Method for Continual Cable Thermal Monitoring Using Cable Characteristic Considerations in Power Over Ethernet
    84.
    发明申请
    System and Method for Continual Cable Thermal Monitoring Using Cable Characteristic Considerations in Power Over Ethernet 有权
    使用以太网供电电缆特性注意事项进行连续电缆热监测的系统和方法

    公开(公告)号:US20100271227A1

    公开(公告)日:2010-10-28

    申请号:US12832575

    申请日:2010-07-08

    IPC分类号: G08B21/00

    CPC分类号: G01K7/00 H04L12/10 H04L43/00

    摘要: A system and method for continual cable thermal monitoring using cable characteristic considerations in Power over Ethernet (PoE) applications. Cable heating in PoE applications is detected through changes in electrical characteristics of the cable itself. By periodically monitoring the electrical characteristics such as insertion loss or cross talk of the cable, it can be determined whether the cable has exceeded certain thermal operating thresholds.

    摘要翻译: 一种用于在以太网供电(PoE)应用中使用电缆特性考虑的连续电缆热监测的系统和方法。 通过电缆本身的电气特性的变化来检测PoE应用中的电缆加热。 通过周期性地监测电缆的电气特性,如插入损耗或串扰,可以确定电缆是否已经超过某些热操作阈值。

    System and Method for Using a PHY to Locate a Thermal Signature in a Cable Plant for Diagnostic, Enhanced, and Higher Power Applications
    85.
    发明申请
    System and Method for Using a PHY to Locate a Thermal Signature in a Cable Plant for Diagnostic, Enhanced, and Higher Power Applications 有权
    用于诊断,增强和高功率应用的用于在电缆工厂中使用PHY定位热特征的系统和方法

    公开(公告)号:US20100214708A1

    公开(公告)日:2010-08-26

    申请号:US12772474

    申请日:2010-05-03

    IPC分类号: H02H5/04 G01R31/02

    CPC分类号: H04L12/10

    摘要: A system and method for using a physical layer device to locate a thermal signature in a cable plant for diagnostic, enhanced, and higher power applications. Cable heating in specific sections of a network cable is detected through an automatic identification of a thermal signature in electrical measurements of a network cable. The correlation of the thermal signature to a specific section of the network cable enables network personnel to locate hot spots in the network cable with ease.

    摘要翻译: 一种用于使用物理层设备来定位用于诊断,增强和高功率应用的电缆设备中的热特征的系统和方法。 通过网络电缆的电气测量中的热特征的自动识别来检测网络电缆的特定部分中的电缆加热。 热签名与网络电缆的特定部分的相关性使得网络人员能够轻松地在网络电缆中定位热点。

    SYSTEM AND METHOD FOR USING AN ETHERNET PHYSICAL LAYER DEVICE TO IDENTIFY CABLING TOPOLOGIES
    86.
    发明申请
    SYSTEM AND METHOD FOR USING AN ETHERNET PHYSICAL LAYER DEVICE TO IDENTIFY CABLING TOPOLOGIES 有权
    使用以太网物理层设备识别布局拓扑的系统和方法

    公开(公告)号:US20090235094A1

    公开(公告)日:2009-09-17

    申请号:US12049254

    申请日:2008-03-14

    IPC分类号: G06F1/26

    CPC分类号: G06F1/266 H04L12/10

    摘要: A system and method for using an Ethernet physical layer device to identify cabling topologies. A power sourcing equipment (PSE) can power independent powered devices (PDs) using two sets of wire pairs in a single four-pair cable. Higher power PSEs can power a single PD using all four wire pairs in the cable. Conventional power over Ethernet (PoE) analog techniques (i.e., voltage, current, etc.) have a difficult time distinguishing where the wire pairs are going from the PSE. By using information (e.g., negotiated speed, link energy, distance diagnostic, etc.) generated by the physical layer device (PHY) subsystem, the PoE system can determine whether the two sets of wire pairs in a cable are powering a single PD or two independent PDs.

    摘要翻译: 一种使用以太网物理层设备来识别布线拓扑的系统和方法。 电源设备(PSE)可以使用两组电线对在单根四对电缆中为独立的供电设备(PD)供电。 高功率PSE可以使用电缆中的所有四条线对单个PD供电。 常规的以太网供电(PoE)模拟技术(即,电压,电流等)具有困难的时间来区分电线对从PSE到哪里。 通过使用由物理层设备(PHY)子系统生成的信息(例如协商速度,链路能量,距离诊断等),PoE系统可以确定电缆中的两组线对是否为单个PD供电, 两个独立的PD。

    SYSTEM AND METHOD FOR USING A LINK ENERGY SIGNAL IN A PHYSICAL LAYER DEVICE HAVING A SILENT CHANNEL/INTERFACE IN ENERGY EFFICIENT ETHERNET
    87.
    发明申请
    SYSTEM AND METHOD FOR USING A LINK ENERGY SIGNAL IN A PHYSICAL LAYER DEVICE HAVING A SILENT CHANNEL/INTERFACE IN ENERGY EFFICIENT ETHERNET 有权
    在具有能量效率的以太网中的静电通道/接口的物理层装置中使用链路能量信号的系统和方法

    公开(公告)号:US20090204836A1

    公开(公告)日:2009-08-13

    申请号:US12342462

    申请日:2008-12-23

    IPC分类号: G06F1/32

    摘要: A system and method for using a link energy signal in physical layer devices (PHYs) having a silent channel/interface in energy efficient Ethernet (EEE). LPI modes in EEE suffer deficiencies in cable unplug detection due to the latency in refresh cycles. LPI modes in EEE also suffer from potential frequency drift, which leads to high bit error rate (BER) when coming out of LPI mode. A link energy signal transmitted during LPI modes enables real-time detection of cable unplug and the frequency lock to be maintained.

    摘要翻译: 一种在能量效率以太网(EEE)中具有无声信道/接口的物理层设备(PHY)中使用链路能量信号的系统和方法。 EEE中的LPI模式由于刷新周期的延迟而遭受电缆拔插检测的缺陷。 EEE中的LPI模式也受到潜在的频率漂移的影响,从而导致LPI模式出现时的高误码率(BER)。 在LPI模式下传输的链路能量信号可以实时检测电缆拔下插头并保持频率锁定。

    METHOD AND SYSTEM FOR UTILIZING A RESERVED AND/OR OUT OF BAND CHANNEL FOR MAINTAINING A NETWORK CONNECTION
    88.
    发明申请
    METHOD AND SYSTEM FOR UTILIZING A RESERVED AND/OR OUT OF BAND CHANNEL FOR MAINTAINING A NETWORK CONNECTION 有权
    用于维护网络连接的保留和/或退出带通道的方法和系统

    公开(公告)号:US20090097500A1

    公开(公告)日:2009-04-16

    申请号:US12107434

    申请日:2008-04-22

    IPC分类号: H04J15/00

    摘要: Aspects of a method and system for utilization of an reserved and/or out of band channel for maintaining a network connection are provided. In this regard, information relating to training of one or more link partners communicatively coupled to an Ethernet link may be exchanged via a reserved and/or out of band channel on the Ethernet link. The reserved and/or out of band channel may be an auxiliary channel as specified by the IEEE802.1AN standard. The reserved and/or out of band channel may be utilized for scheduling training of one or more of the link partners, determining which of the link partners require training, synchronizing training of the link partners, training the link partners based on changes in environmental conditions. The training may comprise configuring an echo canceller a far-end crosstalk canceller, and/or a near-end crosstalk canceller.

    摘要翻译: 提供了用于维护用于维护网络连接的保留和/或带外信道的方法和系统的方面。 在这方面,可以通过以太网链路上的保留和/或带外信道来交换与通信地耦合到以太网链路的一个或多个链路伙伴的训练有关的信息。 保留和/或带外信道可以是由IEEE802.1AN标准规定的辅助信道。 保留和/或带外频道可以用于调度一个或多个链接伙伴的训练,确定链接伙伴中哪一个需要训练,同步训练链接伙伴,基于环境条件的变化来训练链接伙伴 。 训练可以包括配置远端串扰消除器和/或近端串扰消除器的回波消除器。

    Multi-dimensional data interleaving communications system
    89.
    发明授权
    Multi-dimensional data interleaving communications system 有权
    多维数据交错通信系统

    公开(公告)号:US07369617B2

    公开(公告)日:2008-05-06

    申请号:US10786362

    申请日:2004-02-26

    申请人: Scott Powell

    发明人: Scott Powell

    IPC分类号: H04L27/00

    摘要: An interleaving operation can scramble (permute) a data stream, or each dimension (set of symbols (a, b, c, . . . )) in a data stream, immediately following FEC encoding or dimension multiplexing of the data stream. Bursts of errors might be combined with the permuted data before, during, or after transmission. A de-interleaver reorders the received symbols and, in the process, spreads (separates) the bursts of errors. Also, using the multi-dimensional interleaving and de-interleaving can balance SNR on each channel. Spreading the errors and/or balancing SNR can keep bursts from overwhelming the FEC decoder or an FEC decoder in any one channel. In one example, interleaving and de-interleaving can be used to scramble data over Ethernet twisted wire pairs. In another example, interleaving and de-interleaving can be used to scramble data or information broadcast via wireless telecommunications channels (e.g., radio frequency channels, multi-antenna channels, etc).

    摘要翻译: 交织操作可以在数据流的FEC编码或维数复用之后立即对数据流或数据流中的每个维度(一组符号(a,b,c,...))进行加扰(排列)。 错误的突发可能与传输之前,期间或之后的置换数据相结合。 解交织器重新排序接收到的符号,并且在该过程中扩展(分离)错误的突发。 此外,使用多维交织和解交织可以平衡每个信道上的SNR。 扩展错误和/或平衡SNR可以使任何一个信道中的FEC解码器或FEC解码器不受压制。 在一个示例中,交织和解交织可用于通过以太网双绞线对加扰数据。 在另一示例中,可以使用交织和解交织来经由无线电信信道(例如,射频信道,多天线信道等)来对数据或信息进行加扰。

    METHOD AND SYSTEM FOR AN EXTENDED RANGE ETHERNET LINE CODE
    90.
    发明申请
    METHOD AND SYSTEM FOR AN EXTENDED RANGE ETHERNET LINE CODE 有权
    扩展以太网线路代码的方法和系统

    公开(公告)号:US20080069144A1

    公开(公告)日:2008-03-20

    申请号:US11686852

    申请日:2007-03-15

    IPC分类号: H04J3/00

    摘要: Aspects of a method and system for an extended range Ethernet line code are provided. A local PHY may enable converting Ethernet media independent interface (MII) data from a 4-bit packet stream to a 3-bit packet stream. The 3-bit packet stream may be mapped to first and second ternary bits streams, for example, for communication to a remote PHY utilizing PAM-3 over one or more twisted-pair wires. The 3-bit packet stream may be scrambled and/or aligned before mapping. When a single twisted-pair wire is available, the local PHY may multiplex the ternary bits streams into a single stream. Start-stream delimiters (SSD) may be inserted before the ternary bits streams and end-stream delimiters may be inserted after the ternary bits streams. Idle signals may be inserted after the ESDs and before the start of the next frame of MII data.

    摘要翻译: 提供了扩展以太网线路代码的方法和系统的方面。 本地PHY可以实现将以太网媒体独立接口(MII)数据从4比特分组流转换为3比特分组流。 3比特分组流可以映射到第一和第二三进制比特流,例如,通过一个或多个双绞线用于通过PAM-3与远程PHY通信。 在映射之前可以对3比特分组流进行扰频和/或对齐。 当单个双绞线可用时,本地PHY可以将三进制比特流复用为单个流。 可以在三进制比特流之前插入起始流分隔符(SSD),并且在三进制比特流之后可以插入终止流分隔符。 空闲信号可以在ESD之后和MII数据的下一帧开始之前被插入。