公开(公告)号：US20100241936A1

公开(公告)日：2010-09-23

申请号：US12728059

申请日：2010-03-19

申请人： Ryan E. Hirth

发明人： Ryan E. Hirth

IPC分类号： H03M13/09 ,  G06F11/10

CPC分类号： H04L1/0061 ,  H03M13/091 ,  H03M13/6356 ,  H03M13/6516

摘要： One embodiment provides a system for calculating a checksum for a packet. During operation, the system receives a packet, pads the received packet with a number of bits having predetermined values, and calculates an initial checksum value for the padded packet. Subsequently, the system calculates a final checksum for the original packet by reversing the initial checksum value using the padded bits with predetermined values

摘要翻译： 一个实施例提供了一种用于计算分组的校验和的系统。 在操作期间，系统接收分组，以具有预定值的多个比特填充接收到的分组，并且计算填充分组的初始校验和值。 随后，系统通过使用预定值的填充比特来反转初始校验和值来计算原始分组的最终校验和

公开(公告)号：US06192071B1

公开(公告)日：2001-02-20

申请号：US08994519

申请日：1997-12-19

申请人： Ryan E. Hirth ,  Ruchi Wadhawan

发明人： Ryan E. Hirth ,  Ruchi Wadhawan

IPC分类号： H03H730

CPC分类号： H04L25/03885

摘要： A method for tuning an adaptive equalizer in order to receive digital signals from a transmission medium both coarse and fine tuning methods to adaptively equalize a signal received from the transmission medium. The coarse tuning method adjusts an equalizer such that the post equalized signal starts to resemble a known data pattern, such as an MLT3 data pattern. The coarse tuning method monitors and corrects for several things: illegal transitions, over equalization, statistical data pattern anomalies and saturation conditions. Fine tuning methods operate concurrently with the coarse tuning methods and function from the point at which the coarse tuning methods stop being efficient. Additionally, the fine tuning methods hold the waveform locked in. In addition to coarse tuning and fine tuning of the equalizer, one embodiment also adjusts gain of the overall signal such that the post equalized signal is always a certain amplitude. One embodiment corrects for offsets that may get superimposed on the signal as it passes through the receive channel and which may lead to erroneous bit decisions. The method is applicable to a variety of data communication standards including 100 Base-X, FDDI and ATM-155.

摘要翻译： 一种用于调谐自适应均衡器以便从传输介质接收数字信号的方法，用于粗调和微调方法以自适应均衡从传输介质接收的信号。 粗调方法调整均衡器，使得后均衡信号开始类似于已知数据模式，例如MLT3数据模式。 粗调方法监视和纠正以下几件事情：非法转换，过均衡，统计数据模式异常和饱和条件。 微调方法与粗调方法和功能从粗调方式停止有效的角度同时运行。 此外，微调方法保持波形锁定。除了均衡器的粗调和微调之外，一个实施例还调整总体信号的增益，使得后均衡信号总是一定幅度。 一个实施例校正了当信号通过接收信道时可能叠加在信号上并且可能导致错误位决定的偏移。 该方法适用于各种数据通信标准，包括100 Base-X，FDDI和ATM-155。

公开(公告)号：US08913887B2

公开(公告)日：2014-12-16

申请号：US13483944

申请日：2012-05-30

申请人： Ryan E. Hirth ,  Lowell D. Lamb

发明人： Ryan E. Hirth ,  Lowell D. Lamb

IPC分类号： H04B10/08

CPC分类号： H04B10/071 ,  H04B10/0771 ,  H04Q11/0067 ,  H04Q2011/0083 ,  H04Q2011/0086

摘要： In a first aspect, the method and apparatus of the present disclosure can be used to periodically and/or intermittently place one or more ONUs attached to a PON in a power savings mode so that an OTDR test can be performed. While in the power savings mode, the ONUs temporarily suspend their transmitter function and power down their upstream lasers. In a second aspect, the method and apparatus of the present disclosure can be used to coordinate the performance of OTDR during one or more periodic or intermittent discovery slots used to detect and register ONUs recently connected to the PON. Because new ONUs are infrequently connected to the PON and ONUs already registered are not permitted to transmit during the discovery windows, OTDR can be performed during these windows without impacting, to a great degree, the normal operation of the PON.

摘要翻译： 在第一方面，本公开的方法和装置可以用于周期性地和/或间歇地将附接到PON的一个或多个ONU放置在省电模式中，使得可以执行OTDR测试。 在省电模式下，ONU暂时中止其发射机功能并关闭其上行激光器。 在第二方面，本公开的方法和装置可以用于在用于检测和注册最近连接到PON的ONU的一个或多个周期性或间歇发现时隙期间协调OTDR的性能。 由于新的ONU不频繁地连接到PON，并且在发现窗口期间不允许发送已经注册的ONU，所以在这些窗口中可以执行OTDR，而在很大程度上不影响PON的正常操作。

公开(公告)号：US08661314B2

公开(公告)日：2014-02-25

申请号：US12728059

申请日：2010-03-19

申请人： Ryan E. Hirth

发明人： Ryan E. Hirth

IPC分类号： H03M13/00

CPC分类号： H04L1/0061 ,  H03M13/091 ,  H03M13/6356 ,  H03M13/6516

摘要： One embodiment provides a system for calculating a checksum for a packet. During operation, the system receives a packet, pads the received packet with a number of bits having predetermined values, and calculates an initial checksum value for the padded packet. Subsequently, the system calculates a final checksum for the original packet by reversing the initial checksum value using the padded bits with predetermined values.

摘要翻译： 一个实施例提供了一种用于计算分组的校验和的系统。 在操作期间，系统接收分组，以具有预定值的多个比特填充接收到的分组，并且计算填充分组的初始校验和值。 随后，系统通过使用预定值的填充比特来反转初始校验和值来计算原始分组的最终校验和。

公开(公告)号：US08548327B2

公开(公告)日：2013-10-01

申请号：US12967755

申请日：2010-12-14

申请人： Ryan E. Hirth ,  Glen Kramer

发明人： Ryan E. Hirth ,  Glen Kramer

IPC分类号： H04J14/00 ,  H04Q11/00

CPC分类号： H04Q11/0067 ,  H04Q2011/0064

摘要： A system in an Optical Line Terminal (OLT) to dynamically manage polling rates in a passive optical network is provided herein. The system includes a Media Access Control (MAC) unit that is configured to receive a first message from an Optical Network Unit (ONU). The first message includes a status of an upstream queue of the ONU. The system includes a traffic monitor unit coupled to the MAC unit and is configured to receive the first message from the MAC unit and place the upstream queue of the ONU in an inactive mode if the status of the upstream queue indicates that the upstream queue is empty.

摘要翻译： 本文提供了在无线光网络中动态管理轮询速率的光线路终端（OLT）中的系统。 该系统包括被配置为从光网络单元（ONU）接收第一消息的媒体访问控制（MAC）单元。 第一个消息包括ONU的上行队列的状态。 所述系统包括耦合到所述MAC单元的业务监控单元，并且被配置为从所述MAC单元接收所述第一消息，并且如果所述上行队列的状态指示所述上行队列为空，则将所述ONU的上游队列置于非活动模式 。

公开(公告)号：US20100098414A1

公开(公告)日：2010-04-22

申请号：US12574920

申请日：2009-10-07

申请人： Glen Kramer ,  Joshua L. Feinstein ,  Ryan E. Hirth

发明人： Glen Kramer ,  Joshua L. Feinstein ,  Ryan E. Hirth

IPC分类号： H04L12/26 ,  H04J14/00

CPC分类号： H04L47/10 ,  H04B10/0773 ,  H04L47/22 ,  H04L47/2408 ,  H04Q11/0067 ,  H04Q2011/0064 ,  H04Q2011/0084

摘要： One embodiment provides a system for controlling flow rate in an EPON. The system includes an OLT, an ONUs coupled to the OLT via a passive optical splitter, a switch coupled to a port located on the ONU, and a flow-control mechanism. The ONU includes one or more queues corresponding to one or more classes of Services, and one or more ports. The switch includes a plurality of UNI ports, and the switch is configured to switch one or more upstream traffic flows belonging to the one or more classes of services from the plurality of UNI ports. The flow-control mechanism is configured to set a flow rate of an upstream traffic flow of certain class of service originated from a UNI port. The flow-control mechanism sets the flow rate based on status of an ONU queue corresponding to the class of service of the upstream traffic flow.

摘要翻译： 一个实施例提供了一种用于控制EPON中的流量的系统。 该系统包括OLT，经由无源光分路器耦合到OLT的ONU，耦合到位于ONU上的端口的开关和流控制机构。 ONU包括与一个或多个服务等级对应的一个或多个队列，以及一个或多个端口。 所述交换机包括多个UNI端口，并且所述交换机被配置为从所述多个UNI端口切换属于所述一个或多个服务类别的一个或多个上游业务流。 流控制机制被配置为设置从UNI端口发起的某一类业务的上行业务流的流量。 流量控制机制根据与上游业务流的业务类别对应的ONU队列的状态设置流量。

公开(公告)号：US6118815A

公开(公告)日：2000-09-12

申请号：US994862

申请日：1997-12-19

申请人： Ryan E. Hirth ,  Ruchi Wadhawan ,  Robert H. Leonowich ,  Ayal Shoval ,  Kathleen O. Lee

发明人： Ryan E. Hirth ,  Ruchi Wadhawan ,  Robert H. Leonowich ,  Ayal Shoval ,  Kathleen O. Lee

IPC分类号： H04L25/03 ,  H04L27/01

CPC分类号： H04L25/03006 ,  H04L2025/03732 ,  H04L2025/03789

摘要： A method for tuning an adaptive equalizer in order to receive digital signals from a transmission medium both coarse and fine tuning methods to adaptively equalize a signal received from the transmission medium. The coarse tuning method adjusts an equalizer such that the post equalized signal starts to resemble a known data pattern, such as an MLT3 data pattern. The coarse tuning method monitors and corrects for several things: illegal transitions, over equalization, statistical data pattern anomalies and saturation conditions. Fine tuning methods operate concurrently with the coarse tuning methods and function from the point at which the coarse tuning methods stop being efficient. Additionally, the fine tuning methods hold the waveform locked in. In addition to coarse tuning and fine tuning of the equalizer, the present invention also adjusts gain of the overall signal such that the post equalized signal is always a certain amplitude. It also corrects for offsets that may get superimposed on the signal as it passes through the receive channel and which may lead to erroneous bit decisions. The method is applicable to a variety of data communication standards including 100 Base-X, FDDI and ATM-155.

摘要翻译： 一种用于调谐自适应均衡器以便从传输介质接收数字信号的方法，用于粗调和微调方法以自适应均衡从传输介质接收的信号。 粗调方法调整均衡器，使得后均衡信号开始类似于已知数据模式，例如MLT3数据模式。 粗调方法监视和纠正以下几件事情：非法转换，过均衡，统计数据模式异常和饱和条件。 微调方法与粗调方法和功能从粗调方式停止有效的角度同时运行。 此外，微调方法保持波形锁定。除了均衡器的粗调和微调之外，本发明还调整整个信号的增益，使得后均衡信号总是一定的幅度。 它还可以纠正在信号通过接收通道时可能会叠加在信号上的偏移量，并可能导致错误的位决定。 该方法适用于各种数据通信标准，包括100 Base-X，FDDI和ATM-155。