公开(公告)号：US11750291B2

公开(公告)日：2023-09-05

申请号：US17517778

申请日：2021-11-03

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： YongWook Ra ,  Chansung Park

IPC: H04B10/27 ,  H04J14/02 ,  H04Q11/00

CPC classification number: H04B10/27 ,  H04J14/0224 ,  H04J14/0227 ,  H04Q11/0067 ,  H04Q2011/0064 ,  H04Q2011/0086

Abstract: A passive optical network (PON) method and device using network sharing are disclosed. The PON slicing method includes identifying network elements included in a plurality of physical PONs (pPONs), abstracting the identified network elements to be recognized as a same software block, generating a plurality of virtual PONs (vPONs) according to a user requirement using the plurality of pPONs, and mapping the generated plurality of vPONs by performing PON slicing on the abstracted network elements.

公开(公告)号：US10063945B2

公开(公告)日：2018-08-28

申请号：US15417344

申请日：2017-01-27

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Yunjoo Kim ,  YongWook Ra

IPC: H04Q11/00 ,  H04L5/00 ,  H04L7/00 ,  H04L12/931 ,  H04L12/947

CPC classification number: H04Q11/0005 ,  H04L5/0055 ,  H04L7/0075 ,  H04L49/25 ,  H04L49/357 ,  H04L67/325 ,  H04Q2011/0045 ,  H04Q2011/0086

Abstract: A photonic frame switching method and system. The photonic frame switching method includes resetting, by a second input module receiving a master notification, a second timeslot counter used in the second input module to be synchronized with a first timeslot counter used in a first input module, and transmitting a photonic frame from each of a plurality of input modules to a photonic switch fabric device according to a timeslot allocated to each of the input modules based on a scheduling acknowledgement signal transmitted from a main controller, based on the synchronized first and second timeslot counters.

公开(公告)号：US10110977B2

公开(公告)日：2018-10-23

申请号：US15658374

申请日：2017-07-24

Applicant: Electronics and Telecommunications Research Institute

Inventor： YongWook Ra ,  Yunjoo Kim

IPC: H04J14/00 ,  H04Q11/00 ,  H04J14/02 ,  H04B10/70 ,  H04L5/00 ,  H04B10/50

Abstract: A photonic frame switching system may include a main controller and at least one photonic frame wrapper line card. The main controller may determine a point in time at which a photonic frame wrapper line card transmits a photonic frame by allocating a time slot to the photonic frame wrapper line card. When the photonic frame switching system includes a plurality of photonic frame wrapper line cards, points in times at which the plurality of photonic frame wrapper line cards transmits the photonic frames may be synchronized. In particular, when a portion of the plurality of photonic frame wrapper line cards transmit a plurality of photonic frames having different destinations, points in times at which all of the plurality of photonic frame wrapper line cards transmits the photonic frames may be adjusted based on a latency by a destination change.

公开(公告)号：US11388110B2

公开(公告)日：2022-07-12

申请号：US16885008

申请日：2020-05-27

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jongtae Song ,  YongWook Ra

IPC: H04L49/25 ,  H04L49/101 ,  H04L49/00 ,  H04L47/50 ,  H04L49/253 ,  H04L12/70

Abstract: The present disclosure relates to a centralized scheduling method and apparatus that considers non-uniform traffic and, more particularly, to a centralized scheduling method and apparatus for performing effective scheduling based on a characteristic of non-uniform traffic in consideration of a traffic distribution in a data center network.

公开(公告)号：US09515919B2

公开(公告)日：2016-12-06

申请号：US14171236

申请日：2014-02-03

Applicant: Electronics and Telecommunications Research Institute

Inventor： YongWook Ra ,  Tae Kyu Kang ,  Chang-Ho Choi

IPC: H04L12/26 ,  H04L12/703 ,  H04L12/707 ,  H04L12/24

CPC classification number: H04L45/28 ,  H04L41/0654 ,  H04L45/22

Abstract: In order to perform protection switching of a frame that is transmitted and received between a packet processor and a host processor, when an input frame is a receiving frame and a signal failure has occurred, by transporting a message including a protection switching command to a packet processor, protection switching is performed. Information representing that protection switching is performed is recorded in a header of the receiving frame, and a frame including a message including a corresponding header is transported to the host processor.

Abstract translation: 为了执行在分组处理器和主处理器之间发送和接收的帧的保护切换，当输入帧是接收帧并且发生信号故障时，通过将包括保护切换命令的消息传送到分组 处理器，执行保护切换。 执行保护切换的信息被记录在接收帧的报头中，并且将包括对应报头的消息的帧传送到主处理器。