公开(公告)号：US08787758B2

公开(公告)日：2014-07-22

申请号：US13947801

申请日：2013-07-22

Applicant: Broadcom Corporation

Inventor： Glen Kramer ,  Joshua L. Feinstein ,  Ryan E. Hirth

IPC: H04B10/20 ,  H04J14/00

CPC classification number: H04L47/10 ,  H04B10/0773 ,  H04L47/22 ,  H04L47/2408 ,  H04Q11/0067 ,  H04Q2011/0064 ,  H04Q2011/0084

Abstract: 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.

Abstract translation: 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类别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：US20140029936A1

公开(公告)日：2014-01-30

申请号：US13947801

申请日：2013-07-22

Applicant: Broadcom Corporation

Inventor： Glen Kramer ,  Joshua L. Feinstein ,  Ryan E. Hirth

IPC: H04L12/801 ,  H04L12/815 ,  H04B10/077

CPC classification number: H04L47/10 ,  H04B10/0773 ,  H04L47/22 ,  H04L47/2408 ,  H04Q11/0067 ,  H04Q2011/0064 ,  H04Q2011/0084

Abstract: 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.

Abstract translation: 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类别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：US09432753B2

公开(公告)日：2016-08-30

申请号：US13890953

申请日：2013-05-09

Applicant: Broadcom Corporation

Inventor： Ryan E. Hirth ,  Edward W. Boyd

IPC: H04J14/00 ,  H04Q11/00 ,  H04J14/02

CPC classification number: H04Q11/0067 ,  H04J14/0239 ,  H04J14/0246 ,  H04J14/0247 ,  H04J14/025 ,  H04J14/0252 ,  H04J14/026 ,  H04J14/0282 ,  H04Q2011/0064

Abstract: One embodiment of the present invention provides an optical line terminal (OLT) in an Ethernet passive optical network (EPON). The OLT includes a number of bi-directional optical transceivers. At least one bi-directional optical transceiver is coupled to an optical network unit (ONU) group that includes a number of ONUs. The OLT further includes a first downstream media access control (MAC) interface configured to provide a first downstream control signal and a splitter configured to split the first downstream control signal to a number of sub-signals. At least one sub-signal is configured to control downstream transmission of a corresponding bi-directional optical transceiver to a corresponding ONU-group.

Abstract translation: 本发明的一个实施例提供了一种以太网无源光网络（EPON）中的光线路终端（OLT）。 OLT包括多个双向光收发器。 至少一个双向光收发器耦合到包括多个ONU的光网络单元（ONU）组。 OLT还包括被配置为提供第一下游控制信号的第一下游媒体访问控制（MAC）接口和被配置为将第一下游控制信号分割成多个子信号的分离器。 至少一个子信号被配置为控制对应的双向光收发器到对应的ONU组的下行传输。

公开(公告)号：US09100130B2

公开(公告)日：2015-08-04

申请号：US14056085

申请日：2013-10-17

Applicant: Broadcom Corporation

Inventor： Ryan E. Hirth ,  Jaroslaw Wojtowicz

IPC: H04B10/00 ,  H04B10/69 ,  H04J3/16 ,  H04J14/08 ,  H04J3/06

CPC classification number: H04B10/69 ,  H04J3/0682 ,  H04J3/1694 ,  H04J14/08

Abstract: A system to convert upstream burst mode data into continuous mode data in a passive optical network (PON) is provided herein. The system includes a burst mode Serializer/Deserializer (SerDes) that recovers a clock and burst mode data from an Optical Network Unit (ONU). The burst mode unit recovers the burst mode data based on a start time of burst mode data transmission by the ONU and a round-trip time between the ONU and an Optical Line Terminal (OLT). The system further includes a continuous mode SerDes that is coupled to the burst mode SerDes. The continuous mode SerDes is configured to receive the recovered clock and recovered burst mode data from the burst mode SerDes and convert the burst mode data into continuous mode data by buffering and padding the burst mode data based on the recovered clock. The continuous mode Serdes is configured to transmit the continuous mode data to the OLT.

Abstract translation: 本文提供了一种在无源光网络（PON）中将上游突发模式数据转换为连续模式数据的系统。 该系统包括从光网络单元（ONU）恢复时钟和突发模式数据的突发模式串行器/解串器（SerDes）。 突发模式单元基于ONU的突发模式数据传输的开始时间和ONU与光线路终端（OLT）之间的往返时间，恢复突发模式数据。 该系统还包括耦合到突发模式SerDes的连续模式SerDes。 连续模式SerDes被配置为从突发模式SerDes接收恢复的时钟和恢复的突发模式数据，并且通过基于恢复的时钟缓冲和填充突发模式数据将突发模式数据转换为连续模式数据。 连续模式Serdes被配置为将连续模式数据发送到OLT。

公开(公告)号：US09106438B2

公开(公告)日：2015-08-11

申请号：US13671628

申请日：2012-11-08

Applicant: Broadcom Corporation

Inventor： Lawrence D. Davis ,  Glen Kramer ,  Jaroslaw Wojtowicz ,  Ryan E. Hirth ,  Edward W. Boyd

IPC: H04J14/00 ,  H04J3/06 ,  H04L12/28 ,  H04L12/825 ,  H04L12/863 ,  H04Q11/00 ,  H04W56/00

CPC classification number: H04L12/2885 ,  H04L12/2898 ,  H04L47/266 ,  H04L47/621 ,  H04Q11/0067 ,  H04Q2011/0064 ,  H04W56/001 ,  H04W56/0055

Abstract: One embodiment provides a media access control (MAC) module facilitating operations of an Ethernet passive optical network (EPON). The MAC module includes a frame formatter configured to generate a MAC control frame. The generated MAC control frame includes at least one of: an organizationally unique identifier (OUI) field, an QUI-specific operation code (opcode) field, and a number of fields associated with the QUI-specific opcode. Transmission of the MAC control frame facilitates realization of an EPON function based on the fields associated with the QUI-specific opcode.

Abstract translation: 一个实施例提供了便于以太网无源光网络（EPON）的操作的媒体访问控制（MAC）模块。 MAC模块包括配置成生成MAC控制帧的帧格式化器。 生成的MAC控制帧包括以下中的至少一个：组织唯一标识符（OUI）字段，QUI特定操作码（opcode）字段以及与QUI特定操作码相关联的字段数。 基于与QUI特定操作码相关联的字段，MAC控制帧的传输有助于实现EPON功能。

公开(公告)号：US08744261B2

公开(公告)日：2014-06-03

申请号：US13931221

申请日：2013-06-28

Applicant: Broadcom Corporation

Inventor： Ryan E. Hirth ,  Edward W. Boyd ,  Sanjay Goswami

IPC: H04B10/08 ,  H04B10/20 ,  H04J14/00

CPC classification number: H04J14/0221 ,  H04B10/27 ,  H04J14/0282 ,  H04Q11/0067 ,  H04Q2011/0079

Abstract: A system and method for reducing power consumption in a Passive Optic Network (PON). The system comprises an optical line terminal (OLT), an optical network unit (ONU), a traffic-detection module configured to detect status of traffic to and from the ONU, and a power-management module configured to place the ONU in sleep mode based on the detected traffic status. The ONU includes transmitting and receiving components that are selectively powered down during the sleep mode based on a type of traffic in the ONU.

Abstract translation: 一种用于降低无源光网络（PON）功耗的系统和方法。 该系统包括光线路终端（OLT），光网络单元（ONU），被配置为检测来自ONU的业务的状态的流量检测模块以及被配置为将ONU置于睡眠模式的电源管理模块 基于检测到的流量状态。 ONU包括基于ONU中的业务类型在睡眠模式期间选择性地关机的发送和接收组件。