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    METHOD AND APPARATUS FOR PROTECTION SWITCHING
    2.
    发明申请
    METHOD AND APPARATUS FOR PROTECTION SWITCHING 有权
    保护开关的方法和装置

    公开(公告)号：US20140064064A1

    公开(公告)日：2014-03-06

    申请号：US14013617

    申请日：2013-08-29

    Applicant: Electronics and Telecommunications Research Institute

    Inventor： Dae-Ub KIM ,  Tae-Sik CHEUNG ,  Jeong-Dong RYOO

    IPC: H04L12/24

    CPC classification number: H04L41/0659 ,  H04L45/28

    Abstract: An apparatus and method for protection switching are disclosed. The protection switching method in accordance with an example of the present disclosure is capable of smoothly processing a protection switching while preventing a data path mismatch occurring in the protection switching in a case in which a forced switching command (FS), which is a passive command, and a signal failure (SF) of a protection path occur at both end nodes, respectively, when a linear protection switching is performed by use of a protection state coordination message in a packet network or a packet transport network.

    Abstract translation: 公开了一种用于保护切换的装置和方法。 在作为被动命令的强制切换命令（FS）的情况下，根据本公开的示例的保护切换方法能够平滑地处理保护切换，同时防止在保护切换中发生的数据路径不匹配 并且当通过在分组网络或分组传输网络中使用保护状态协调消息来执行线性保护切换时，分别在两端节点处发生保护路径的信号故障（SF）。

    APPARATUS AND METHOD FOR PROVIDING FRAME PREEMPTION
    3.
    发明申请
    APPARATUS AND METHOD FOR PROVIDING FRAME PREEMPTION 有权

    公开(公告)号：US20220303083A1

    公开(公告)日：2022-09-22

    申请号：US17528521

    申请日：2021-11-17

    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

    Inventor： Chang-Ho CHOI ,  Taesik CHEUNG ,  Tae Kyu KANG ,  Jeong-Dong RYOO ,  Woo Young CHOI

    IPC: H04L5/00 ,  H04L1/00

    Abstract: When a transmitting apparatus wants to transmit a preemptable frame, the transmitting apparatus transmits a preemptable packet by a custom preamble including frame length information on a payload of the preemptable frame to the payload of the preemptable frame. A receiving apparatus determines whether a received preemptable frame is fragmented using frame length information set in the custom preamble of the received preemptable frame. As described above, since it is possible to check whether the received frame is fragmented using the frame length information set in the custom preamble, there is no need to perform CRC calculation to determine whether the received frame is fragmented as in the prior art.

    PROTECTION SWITCHING METHOD AND APPARATUS
    6.
    发明申请
    PROTECTION SWITCHING METHOD AND APPARATUS 有权
    保护开关方式和装置

    公开(公告)号：US20140071813A1

    公开(公告)日：2014-03-13

    申请号：US14020219

    申请日：2013-09-06

    Applicant: Electronics and Telecommunications Research Institute

    Inventor： Taesik CHEUNG ,  Jeong-Dong RYOO

    IPC: H04L12/24

    CPC classification number: H04L41/0668 ,  H04L41/0663 ,  H04L45/22 ,  H04L49/65

    Abstract: In a network in which a plurality of protection paths have been formed for one working path between a first node and a second node, each node determines preference levels corresponding to an order to be preferentially used when performing protection switching on the plurality of protection paths. Next, each node exchanges pieces of information about the preference levels determined for the plurality of protection paths.

    Abstract translation: 在其中为第一节点和第二节点之间的一个工作路径形成多个保护路径的网络中，当对多个保护路径进行保护切换时，每个节点确定与要优先使用的顺序相对应的优先级。 接下来，每个节点交换关于为多个保护路径确定的偏好等级的信息。

    COMMUNICATION APPARATUS IN WIDEBAND WIRELESS OPTICAL COMMUNICATION SYSTEM BASED ON FREE SPACE, AND TRANSMISSION AND RECEPTION METHOD USING THE SAME
    9.
    发明申请
    COMMUNICATION APPARATUS IN WIDEBAND WIRELESS OPTICAL COMMUNICATION SYSTEM BASED ON FREE SPACE, AND TRANSMISSION AND RECEPTION METHOD USING THE SAME 审中-公开
    基于自由空间的宽带无线光通信系统中的通信装置及其传输和接收方法

    公开(公告)号：US20140153928A1

    公开(公告)日：2014-06-05

    申请号：US14096650

    申请日：2013-12-04

    Applicant: Electronics and Telecommunications Research Institute

    Inventor： Jea Hoon YU ,  Seung-Hyun CHO ,  Tae Il KIM ,  Jeong-Dong RYOO ,  Tae Whan YOO ,  Bheom Soon JOO ,  Jong Hyun LEE ,  Bong Tae KIM

    IPC: H04B10/11

    CPC classification number: H04B10/1129

    Abstract: In a wireless optical communication system in which communication is performed based on a free space and a plurality of the communication apparatuses are arranged in a ring form around a central office terminal (COT), the communication apparatus monitors optical signals received in a first direction or in a second direction opposite to the first direction, and selects a first path through which the optical signals in the first direction are received and a second path through which the optical signals in the second direction are received. The communication apparatus converts an optical signal having a predetermined unique wavelength from among the optical signals received through the selected path into a signal of a frequency domain having a plurality of subcarriers, and obtains packet data mapped to each of the subcarriers.

    Abstract translation: 在基于自由空间进行通信并且多个通信装置以环形方式布置在中心局终端（COT）周围的无线光通信系统中，通信装置监视沿第一方向接收的光信号， 在与第一方向相反的第二方向上，选择接收第一方向的光信号的第一路径和接收第二方向的光信号的第二路径。 通信装置将从所选择的路径接收的光信号中具有预定唯一波长的光信号转换为具有多个子载波的频域的信号，并获得映射到每个副载波的分组数据。

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