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    • 3. 发明申请
    • Optical line terminal for managing link status of optical network units and gigabit ethernet passive optical network employing same
    • 用于管理光网络单元的链路状态的光线路终端和采用其的千兆以太网无源光网络
    • US20050158048A1
    • 2005-07-21
    • US10869439
    • 2004-06-16
    • Whan-Jin SungShin-Hee WonTae-Sung ParkDo-Young JoungSe-Kang ParkJun-Sung AnSoon-Ho JangDong-Il Seo
    • Whan-Jin SungShin-Hee WonTae-Sung ParkDo-Young JoungSe-Kang ParkJun-Sung AnSoon-Ho JangDong-Il Seo
    • H04B10/08H04J3/16H04J14/00
    • H04J3/1694
    • A system and method for managing link status in Gigabit Ethernet passive optical network (GE-PON) units (ONUs) is disclosed. The GE-PON comprises one or more ONUs allocated data transmission periods, respectively. Each of the ONUs sends a report signal and a data signal in a corresponding one of the allocated data transmission periods. The report signal contains a signal to request allocation of a bandwidth for data signal transmission in a next window period. The GE-PON further comprises an optical splitter having its one side connected with the ONUs and its other side connected with at least one optical communication channel. The optical splitter switches an input signal to a desired destination. The GE-PON further comprises an optical line terminal (OLT) for determining whether the report signal is received, identifying a specific one of the ONUs having sent the report signal when the report signal is received, determining whether the data signal is received from the specific ONU in a specific one of the data transmission periods allocated to the specific ONU, and discriminating and managing a link status of the specific ONU in accordance with the determination made.
    • 公开了一种用于管理千兆以太网无源光网络(GE-PON)单元(ONU)中的链路状态的系统和方法。 GE-PON分别包括一个或多个ONU分配的数据传输周期。 每个ONU在分配的数据传输周期中的相应一个中发送报告信号和数据信号。 报告信号包含在下一个窗口期间请求分配用于数据信号传输的带宽的信号。 GE-PON还包括光分路器,其一侧与ONU相连,其另一侧与至少一个光通信信道相连。 光分路器将输入信号切换到所需的目的地。 GE-PON还包括用于确定是否接收到报告信号的光线路终端(OLT),识别当接收到报告信号时已经发送了报告信号的ONU中的特定一个ONU,确定是否从 分配给特定ONU的特定的一个数据传输周期中的特定ONU,以及根据所做出的确定来鉴别和管理该特定ONU的链路状态。
    • 4. 发明授权
    • Idle-pattern output control circuit used in a Gigabit Ethernet-passive optical network
    • 千兆以太网无源光网络中使用的空闲模式输出控制电路
    • US07274874B2
    • 2007-09-25
    • US10354621
    • 2003-01-30
    • Whan-Jin SungTae-Sung ParkShin-Hee WonMin-Hyo Lee
    • Whan-Jin SungTae-Sung ParkShin-Hee WonMin-Hyo Lee
    • H04B10/20
    • H04Q11/0062H04L7/06H04L2007/045H04Q11/0066H04Q11/0067H04Q2011/0094
    • An idle pattern output-control circuit used in a point-to-multipoint communication based Gigabit Ethernet-passive optical network (GE-PON) is provided. In a GE-PON having an optical-line terminal (OLT), a plurality of optical-network units (ONUs) connected to each other via an optical-distribution network (ODN), a media-access controller (MAC), and a physical-coding sublayer (PCS), in which the PCS transmits idle-pattern data to a serializer/deserializer (SERDES) when there is no data to be transmitted to the OLT, an idle-pattern output-control circuit comprising a data converter for converting an idle-pattern data generated from the PCS into a low-level optical signal for subsequent transmission to the OLT, and a switching circuit for selecting data generated from the PCS for subsequent transmission to the SERDES when there is data to be transmitted and for selecting data converted by the data converter for subsequent transmission to the SERDES when there is no data to be transmitted.
    • 提供了一种基于千兆以太网无源光网络(GE-PON)的点对多点通信中使用的空闲模式输出控制电路。 在具有光线路终端(OLT)的GE-PON中,经由光分配网络(ODN),媒体接入控制器(MAC)和相互连接的多个光网络单元(ONU) 物理编码子层(PCS),其中当不存在要发送到OLT的数据时,PCS将空闲模式数据发送到串行器/解串器(SERDES);空闲模式输出控制电路,包括用于 将从PCS产生的空闲模式数据转换为低级光信号,以便随后发送到OLT;以及切换电路,用于当存在要发送的数据时,选择从PCS生成的数据以供随后发送到SERDES,并且 当不存在要发送的数据时,选择由数据转换器转换的数据,用于后续发送到SERDES。
    • 5. 发明申请
    • Method for controlling upstream traffic in ethernet-based passive optical network
    • 控制以太网无源光网络上行业务的方法
    • US20050027874A1
    • 2005-02-03
    • US10776727
    • 2004-02-11
    • Su-Hyung KimWhan-Jin SungHo-Il OhYoung-Seok KimYun-Je OhTae-Sung Park
    • Su-Hyung KimWhan-Jin SungHo-Il OhYoung-Seok KimYun-Je OhTae-Sung Park
    • H04L12/28H04L12/56H04Q11/00G06F15/16
    • H04Q11/0067H04L47/2441H04L47/30H04L47/50H04L47/522H04L47/621H04L47/6215H04Q11/0066H04Q11/0071H04Q2011/0064
    • A method for upstream traffic control in an Ethernet-based passive optical network, adapted for preventing a penalty phenomenon occurring in making upstream data transfer on basis of High Priority First Allocation (HPFA) algorithm. The method includes the steps of determining whether are any data frames to transfer in the first buffer; if it is determined that there are any data frames to transfer in the first buffer, determining whether the data frame does not exceed a low water mark indicative of a reference value set up to ensure the minimum transfer traffic; if it is determined that the data frame in the first buffer does not exceed the low water mark, then transferring the data frame stored in the first buffer and determining whether the data frame in a second buffer does not exceed the low water mark; if it is determined that the data frame in the second buffer does not exceed the low water mark, then determining whether the data frame to transfer in a third buffer does not exceed the low water mark; if it is determined that the data frame to transfer in the third buffer does not exceed the low water mark, then transferring the respective data frame stored in the second and third buffers.
    • 一种用于基于以太网的无源光网络中的上行流量控制的方法,适用于基于高优先级优先分配(HPFA)算法防止在进行上游数据传输时发生的惩罚现象。 该方法包括以下步骤:确定是否在第一缓冲器中传送任何数据帧; 如果确定在第一缓冲器中存在要传送的数据帧,则确定数据帧是否不超过指示设置为确保最小传输业务量的参考值的低水位标记; 如果确定第一缓冲器中的数据帧不超过低水位标记,则传送存储在第一缓冲器中的数据帧,并确定第二缓冲器中的数据帧是否不超过低水位标记; 如果确定第二缓冲器中的数据帧不超过低水位标记,则确定在第三缓冲器中传送的数据帧是否不超过低水位标记; 如果确定在第三缓冲器中传送的数据帧不超过低水位标记,则传送存储在第二和第三缓冲器中的相应数据帧。