公开(公告)号：US20110142442A1

公开(公告)日：2011-06-16

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： H04B17/00

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：US20130322869A1

公开(公告)日：2013-12-05

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：US20110004809A1

公开(公告)日：2011-01-06

申请号：US12828568

申请日：2010-07-01

申请人： Ryan E. HIRTH

发明人： Ryan E. HIRTH

IPC分类号： H03M13/13 ,  G06F11/10

CPC分类号： H04L1/0083 ,  H03M13/333 ,  H04L1/0045

摘要： Embodiments of the present invention provide a system that identifies an even delimiter in a forward error correction (FEC)-coded Ethernet frame. The system receives an FEC-coded Ethernet frame that includes the even delimiter, which is a predetermined sequence that separates a conventional Ethernet frame and FEC parity bits in the FEC-coded Ethernet frame. Next, the system scans a bit stream of the FEC-coded Ethernet frame. Then, the system determines a first Hamming distance between a first consecutive set of frame bits in the bit stream and the even delimiter. The system also determines a second Hamming distance between a second consecutive set of frame bits in the bit stream and the even delimiter. Both the first and second Hamming distances are shorter than a predefined value. The system subsequently selects one of the first and second sets of frame bits having the shorter Hamming distance as the even delimiter.

摘要翻译： 本发明的实施例提供一种在前向纠错（FEC）编码的以太网帧中识别偶数分隔符的系统。 该系统接收FEC编码的以太网帧，其包括均衡定界符，该分隔符是将FEC编码以太网帧中的常规以太网帧和FEC奇偶校验位分离的预定序列。 接下来，系统扫描FEC编码以太网帧的比特流。 然后，系统确定比特流中的第一连续帧比特和偶数分隔符之间的第一汉明距离。 系统还确定比特流中的第二连续帧比特和偶数分隔符之间的第二汉明距离。 第一和第二汉明距离都比预定值短。 该系统随后选择具有较短汉明距离的第一和第二组帧比特中的一个作为偶数分隔符。