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48 条记录 (耗时 0.017 秒)

    Method of controlling FEC in EPON
    11.
    发明授权
    Method of controlling FEC in EPON 有权
    在EPON中控制FEC的方法

    公开(公告)号：US07600171B2

    公开(公告)日：2009-10-06

    申请号：US11005115

    申请日：2004-12-04

    申请人： Hoon Lee ,  Tae Whan Yoo ,  Hyeong Ho Lee

    发明人： Hoon Lee ,  Tae Whan Yoo ,  Hyeong Ho Lee

    IPC分类号： G06F11/00 ,  H03M13/00 ,  G01R31/08 ,  H04J3/16

    CPC分类号： H04L1/0009 ,  H04L1/0057 ,  H04L1/203 ,  H04Q11/0066 ,  H04Q11/0067 ,  H04Q2011/0079 ,  H04Q2011/0088

    摘要： A method of controlling a Forward Error Correction (FEC) operation including: configuring a FEC frame to be transmitted between an OLT and an ONU comprising a FEC frame identifier indicating whether FEC should be performed, data, a first flag indicating that FEC should be performed, and a second flag indicating that the FEC frame is to be FEC encoded; initializing the OLT by disabling a FEC function; determining whether the ONU requires FEC to be performed based on a FEC frame identifier received from the ONU; IPG stretching the FEC frame when the ONU requires to FEC to be performed; and transmitting the FEC frame to the ONU after FEC encoding based on the second flag of an input frame to a PCS sublayer from an upper layer. The method controls an effective operation of a FEC of an ONU and an OLT without changing a Round Trip Time (RTT) according to optical link quality in an EPON. Accordingly, FEC is used only if necessary, thereby simplifying the managing of a link, and preventing an excessive 35% reduction of throughput caused by use of unnecessary FEC.

    摘要翻译： 一种控制前向纠错（FEC）操作的方法，包括：配置要在OLT和ONU之间传输的FEC帧，包括指示是否应执行FEC的FEC帧标识符，数据，指示应执行FEC的第一标志 以及指示FEC帧要被FEC编码的第二标志; 通过禁用FEC功能来初始化OLT; 基于从ONU接收到的FEC帧标识来确定ONU是否需要执行FEC; 当ONU需要执行FEC时，IPG扩展FEC帧; 并且基于来自上层的PCS子层的基于输入帧的第二标志的FEC编码之后将FEC帧发送到ONU。 该方法根据EPON中的光链路质量来控制ONU和OLT的FEC的有效操作，而不改变往返时间（RTT）。 因此，仅在必要时使用FEC，从而简化链路的管理，并且防止由于使用不必要的FEC导致的吞吐量的过度的35％的降低。

    Ethernet switch, and apparatus and method for expanding port
    12.
    发明授权
    Ethernet switch, and apparatus and method for expanding port 有权
    以太网交换机，扩展端口的设备和方法

    公开(公告)号：US07599353B2

    公开(公告)日：2009-10-06

    申请号：US10739737

    申请日：2003-12-17

    申请人： Chan Kim ,  Tae Whan Yoo ,  Hyeong Ho Lee

    发明人： Chan Kim ,  Tae Whan Yoo ,  Hyeong Ho Lee

    IPC分类号： H04L12/66

    CPC分类号： H04L49/45 ,  H04L49/351

    摘要： An Ethernet switch having a function of expanding a port, apparatus and method for expanding a port are provided. A receiver receives a frame including predetermined port identification information. An information detector detects the predetermined port identification information and a terminal address of a terminal connected to a sub port corresponding to the predetermined port identification information. A storage unit stores an address table including the terminal address and the predetermined port identification information. A reader reads port identification information corresponding to a destination address included in the frame from the address table. A frame transformer adds the read port identification information to the frame. An output unit outputs the frame transformed by the frame transformer to a main port connected to a sub port corresponding to the read port identification information among main ports that can be connected to at least one sub port.

    摘要翻译： 提供具有扩展用于扩展端口的端口，装置和方法的功能的以太网交换机。 接收机接收包括预定端口识别信息的帧。 信息检测器检测预定端口识别信息和连接到与预定端口识别信息对应的子端口的终端的终端地址。 存储单元存储包括终端地址和预定端口识别信息的地址表。 读取器从地址表读取与帧中包括的目的地地址对应的端口识别信息。 帧转换器将读端口识别信息添加到帧。 输出单元将帧变换器变换后的帧输出到与能够与至少一个子端口连接的主端口中对应于读端口识别信息的子端口连接的主端口。

    Method of monitoring link performance and diagnosing active link state in Ethernet passive optical network
    13.
    发明授权
    Method of monitoring link performance and diagnosing active link state in Ethernet passive optical network 有权
    以太网无源光网络监控链路性能和诊断主动链路状态的方法

    公开(公告)号：US07502328B2

    公开(公告)日：2009-03-10

    申请号：US11286632

    申请日：2005-11-22

    申请人： Ho Sook Lee ,  Jee Sook Eun ,  Tae Whan Yoo ,  Bong Tae Kim

    发明人： Ho Sook Lee ,  Jee Sook Eun ,  Tae Whan Yoo ,  Bong Tae Kim

    IPC分类号： H04L12/26

    CPC分类号： H04L43/0811 ,  H04L43/0847 ,  H04L43/16

    摘要： Provided is a method of monitoring link performance and diagnosing an active link state without interrupting traffic in an Ethernet passive optical network (EPON) while the link is in the active state. The method of monitoring link performance and diagnosing an active link state without interrupting data flow to logic links which are in active states in the EPON, includes: a) allowing an operator of the EPON to select a link performance monitoring function or a link active state diagnosing function; b-1) if the link performance monitoring function is selected, setting a monitoring cycle timer and periodically transmitting a performance information request frame from a local node to a remote node; b-2) if the remote node receives the performance information request frame, collecting corresponding link performance information and transmitting a response frame from the remote node to the local node in a format which is predetermined in accordance with a corresponding frame format; b-3) if the local node receives the response frame from the remote node, analyzing the performance information of the response frame and determining whether the link performance has deteriorated or if a failure has occurred in the local node; b-4) if the deterioration of the link function or the degree of the failure reaches a predetermined threshold, reporting to an upper layer that a failure has occurred.

    摘要翻译： 提供了一种在链路处于活动状态时监视链路性能和诊断活动链路状态而不中断以太网无源光网络（EPON）中的业务的方法。 监视链路性能和诊断活动链路状态而不中断到EPON中处于活动状态的逻辑链路的数据流的方法包括：a）允许EPON的运营商选择链路性能监视功能或链路活动状态 诊断功能; b-1）如果选择了链路性能监视功能，则设置监视周期定时器并且周期地从本地节点向远程节点发送性能信息请求帧; b-2）如果所述远程节点接收到所述性能信息请求帧，则收集对应的链路性能信息，并以根据对应的帧格式预定的格式从所述远程节点向所述本地节点发送响应帧; b-3）如果本地节点从远程节点接收到响应帧，分析响应帧的性能信息，确定链路性能是否恶化，或者本地节点是否发生故障; b-4）如果链路功能的劣化或故障程度达到预定阈值，则向上层报告发生故障。

    Method of controlling upstream data transmission in ethernet PON and apparatus thereof
    14.
    发明授权
    Method of controlling upstream data transmission in ethernet PON and apparatus thereof 有权
    以太网PON上游数据传输控制方法及其设备

    公开(公告)号：US07443861B2

    公开(公告)日：2008-10-28

    申请号：US10700613

    申请日：2003-11-03

    申请人： Ho Sook Lee ,  Tae Whan Yoo ,  Hyeong Ho Lee

    发明人： Ho Sook Lee ,  Tae Whan Yoo ,  Hyeong Ho Lee

    IPC分类号： H04L12/28 ,  H04L12/56

    CPC分类号： H04Q11/0067 ,  H04Q11/0066 ,  H04Q2011/0064 ,  H04Q2011/0084

    摘要： A method of controlling data transmission in an Ethernet passive optical network (EPON) and an apparatus thereof are provided. Transmission permission messages using a mode of bandwidth allocation are queued in a queuing unit according to the types of the transmission permission messages. A transmission time duration of upstream data is defined for each of the transmission permission messages queued in the queuing unit. A bandwidth allocation unit generates transmission permission messages to allocate upstream data transmission bandwidth for an optical network unit (ONU), based on the transmission permission messages stored in the storage unit. A scheduler designates the predetermined priority, reads transmission permission messages from queues according to a predetermined priority, determines a transmission start time of upstream data, and outputs the transmission permission messages.

    摘要翻译： 提供一种控制以太网无源光网络（EPON）中的数据传输的方法及其装置。 使用带宽分配模式的发送许可消息根据发送许可消息的类型在排队单元中排队。 针对在排队单元中排队的每个发送许可消息定义上行数据的传输持续时间。 带宽分配单元基于存储在存储单元中的传输允许消息，生成用于为光网络单元（ONU）分配上行数据传输带宽的发送允许消息。 调度器指定预定优先级，根据预定优先级从队列中读取发送许可消息，确定上行数据的发送开始时间，并输出发送许可消息。

    Method for managing service bandwidth by customer port and EPON system using the same
    15.
    发明申请
    Method for managing service bandwidth by customer port and EPON system using the same 失效
    通过客户端口和使用该端口的EPON系统管理业务带宽的方法

    公开(公告)号：US20070127487A1

    公开(公告)日：2007-06-07

    申请号：US11634985

    申请日：2006-12-07

    申请人： Jung Hak Kim ,  Tae Whan Yoo ,  Hoon Lee ,  Yool Kwon ,  Bong Tae Kim

    发明人： Jung Hak Kim ,  Tae Whan Yoo ,  Hoon Lee ,  Yool Kwon ,  Bong Tae Kim

    IPC分类号： H04L12/56

    CPC分类号： H04J3/1694 ,  H04L29/12207 ,  H04L29/12783 ,  H04L41/0896 ,  H04L41/5003 ,  H04L41/5022 ,  H04L41/5067 ,  H04L61/20 ,  H04L61/35

    摘要： A method for managing a service bandwidth by a customer port and an EPON system using the same are provided. In order to manage the service bandwidth by a customer, ONU and ONT allocate a service class according to a combination of information about a customer that receives a service, and a service type and a service priority of a service provided to a customer, allocate a bandwidth according to each service class and control a uplink bandwidth or a downlink bandwidth according to a service class. Also, a system manger collects information about a service provider, a service provided from a service provider, a customer that receives a service, and information for classifying a service. After collecting, the system manager provides the collected information to the ONU and the OLT.

    摘要翻译： 提供了一种由客户端口和使用其的EPON系统管理服务带宽的方法。 为了管理客户的服务带宽，ONU和ONT根据接收到服务的客户的信息的组合以及提供给客户的服务的服务类型和服务优先级分配服务类别，分配 根据每个服务类别的带宽，并根据服务类别控制上行链路带宽或下行链路带宽。 此外，系统管理器收集关于服务提供商的信息，从服务提供商提供的服务，接收服务的客户以及用于对服务进行分类的信息。 收集后，系统管理员将收集到的信息提供给ONU和OLT。

    Apparatus and method for 8B/10B code-group validity check
    16.
    发明授权
    Apparatus and method for 8B/10B code-group validity check 失效
    8B / 10B码组有效性检查装置及方法

    公开(公告)号：US07205911B2

    公开(公告)日：2007-04-17

    申请号：US10718759

    申请日：2003-11-21

    申请人： Junghak Kim ,  Tae Whan Yoo ,  Hyeong Ho Lee

    发明人： Junghak Kim ,  Tae Whan Yoo ,  Hyeong Ho Lee

    IPC分类号： H03M7/00

    CPC分类号： H03M5/145 ,  H04L25/4908

    摘要： An apparatus and method for checking validity of an 8B/10B code-group are provided. The apparatus for checking validity of an 8B/10B code-group includes a 6B/5B disparity classification unit, a 4B/3B disparity classification unit, an RD6 detection unit, an RD4 detection unit, an 8B/10B code-group rule violation detection unit, an RD error detection unit, and a unit for outputting 8B/10B code-group validity. The apparatus receives an 8B/10B code-group, divides into a least significant 6-bit nibble and a most significant 4-bit nibble, detects a running disparity, and by doing so, determines the validity of a code-group. The apparatus and method for checking validity of an 8B/10B code-group relatively shortens the critical path, which indicates the number of combinational logic circuits that should be operated in a unit time, and therefore the apparatus and method are appropriate to high-speed systems such as gigabit Ethernet systems.

    摘要翻译： 提供一种用于检查8B / 10B码组的有效性的装置和方法。 用于检查8B / 10B码组的有效性的装置包括6B / 5B视差分类单元，4B / 3B视差分类单元，RD6检测单元，RD4检测单元，8B / 10B码组规则违规检测 单元，RD错误检测单元和用于输出8B / 10B码组有效性的单元。 该装置接收到一个8B / 10B码组，分为最低有效6比特半字节和最高有效4比特半字节，检测运行中的差异，并通过这样做确定码组的有效性。 用于检查8B / 10B码组的有效性的装置和方法相对缩短关键路径，其指示应在单位时间内操作的组合逻辑电路的数量，因此该装置和方法适合于高速 诸如千兆以太网系统的系统。

    CRC verification apparatus with constant delay and method thereof
    17.
    发明授权
    CRC verification apparatus with constant delay and method thereof 失效
    具有恒定延迟的CRC校验装置及其方法

    公开(公告)号：US07194672B2

    公开(公告)日：2007-03-20

    申请号：US10723551

    申请日：2003-11-25

    申请人： Chan Kim ,  Seung Hwan Kim ,  Tae Whan Yoo ,  Hyeong Ho Lee

    发明人： Chan Kim ,  Seung Hwan Kim ,  Tae Whan Yoo ,  Hyeong Ho Lee

    IPC分类号： H03M13/00

    CPC分类号： H03M13/091

    摘要： An apparatus and method for detecting errors in received data and transferring only error-free data in data communications are provided. In the cyclic redundancy check (CRC) verification apparatus and method having a constant delay, irrespective of the length of a received data frame, input and output processing delay of received data is made to be constant. The CRC verification apparatus having constant delay comprises an input control unit which stores the start address of an input data frame in a memory storing the input data frame, and stores a CRC verification result in the start address location; and an output control unit which after a predetermined constant time passes from the start address, reads an input data frame and if the CRC verification result is normal, output the read data frame. The apparatus and method make the time taken for receiving a data frame, constant irrespective of the received data frame, while CRC verification is performed.

    摘要翻译： 提供了用于检测接收到的数据中的错误并且仅传送数据通信中的无错误数据的装置和方法。 在具有恒定延迟的循环冗余校验（CRC）验证装置和方法中，与接收到的数据帧的长度无关，使得接收数据的输入和输出处理延迟是恒定的。 具有恒定延迟的CRC校验装置包括输入控制单元，其将输入数据帧的起始地址存储在存储输入数据帧的存储器中，并将CRC验证结果存储在起始地址位置; 以及输出控制单元，其在从起始地址经过预定的恒定时间之后，读取输入数据帧，并且如果CRC验证结果正常，则输出读取的数据帧。 该装置和方法使得接收数据帧所花费的时间，不管接收的数据帧是多少，而执行CRC校验。

    MAC security entity for link security entity and transmitting and receiving method therefor
    19.
    发明授权
    MAC security entity for link security entity and transmitting and receiving method therefor 失效
    链路安全实体的MAC安全实体及其发送和接收方法

    公开(公告)号：US07797745B2

    公开(公告)日：2010-09-14

    申请号：US11266627

    申请日：2005-11-03

    申请人： Kyeong Soo Han ,  Kwang Ok Kim ,  Tae Whan Yoo

    发明人： Kyeong Soo Han ,  Kwang Ok Kim ,  Tae Whan Yoo

    IPC分类号： G06F12/14

    CPC分类号： H04L63/126 ,  H04L9/0631 ,  H04L9/0637 ,  H04L9/3242 ,  H04L63/1458

    摘要： An apparatus and method for providing a security function of frames transmitted between optical network terminals (OLTs) and optical network units (ONUs) in an Ethernet passive optical network (EPON) providing media access control (MAC) services are provided. The apparatus includes: a frame classifier distinguishing the type of a frame, and based on the logical link identifier (LLID) of the distinguished frame, determining whether or not the frame is a security link to which a security function is to be applied; a bypass unit delaying a no-security-function frame so that a processing time for converting the security-function-applied frame classified in the frame classifier into an encrypted frame is the same as a time for processing the no-security-function frame; and a parameter generation unit transmitting in relation to each of the LLIDs, a parameter set value including a security-function-application setting signal used in the encryption, decryption and authentication of the frame, a frame decryption signal, an encryption mode selection signal, and an authentication intensity adjustment signal.

    摘要翻译： 提供了一种在提供媒体访问控制（MAC）服务的以太网无源光网络（EPON）中提供在光网络终端（OLT）和光网络单元（ONU）之间传输的帧的安全功能的装置和方法。 该装置包括：区分帧的类型的帧分类器，并且基于识别帧的逻辑链路标识符（LLID），确定帧是否是要应用安全功能的安全链路; 旁路单元延迟无安全功能帧，使得将分类在帧分类器中的安全功能应用帧转换为加密帧的处理时间与用于处理无安全功能帧的时间相同; 以及相关于每个所述LLID发送的参数生成单元，包括在所述帧的加密，解密和认证中使用的安全功能应用设置信号的参数设置值，帧解密信号，加密模式选择信号， 和认证强度调整信号。