Patents by Inventor Daeub Kim

Daeub Kim has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10194222
    Abstract: An optical switching control method and apparatus. The method includes generating an optical switching path corresponding to a destination node of service traffic flowing from an external service network, generating an optical frame corresponding to the generated optical switching path, transmitting, to a control server, a request message for requesting an allocation of a time slot to transmit the generated optical frame, generating an optical signal having a predetermined wavelength to transmit the optical frame in response to an admission message being received as a result of admission with respect to the request message, and transferring the optical frame to the destination node based on the optical switching path using the generated optical signal.
    Type: Grant
    Filed: June 15, 2017
    Date of Patent: January 29, 2019
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Daeub Kim, Jongtae Song, Sun Me Kim, Chansung Park, Tae Whan Yoo, Ji Wook Youn, Kyeong-Eun Han
  • Publication number: 20180262438
    Abstract: Disclosed is a communication method, a zone scheduler performing thereof, and an inter-zone scheduling coordinator (IZSC). A communication method performed by a zone scheduler may include transmitting an inter-zone scheduling request to an IZSC in response to an occurrence of an inter-zone traffic with respect to another zone scheduler, receiving an inter-zone matching pattern and information on a time slot from the IZSC, and transmitting the inter-zone traffic to the other zone scheduler by performing scheduling based on the inter-zone matching pattern in the time slot.
    Type: Application
    Filed: October 4, 2017
    Publication date: September 13, 2018
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Jongtae SONG, Daeub KIM, Kyeong-Eun HAN, Sun Me KIM, Chansung PARK, Ji Wook YOUN
  • Publication number: 20180262437
    Abstract: A scheduling method for switching including receiving an allocation request for a time slot from input nodes to which the time slot is not allocated, receiving property information of at least one of virtual output queues (VOQs) in which data received by the input nodes is stored, determining a transmission priority of the VOQs for transmission of the data stored in the VOQs based on the received property information of the VOQs, determining input nodes to which the time slot is to be allocated using outputter arbiters for output nodes corresponding to the VOQs, allocating the time slot to the determined input nodes, and updating elements used to allocate the time slot with respect to input nodes for which the allocating of the time slot is completed and output nodes for which the allocating of the time slot is completed.
    Type: Application
    Filed: May 30, 2017
    Publication date: September 13, 2018
    Inventors: Kyeong-Eun HAN, Jongtae SONG, Daeub KIM, Chansung PARK, Sun Me KIM, Ji Wook YOUN
  • Publication number: 20180109857
    Abstract: An optical switching control method and apparatus. The method includes generating an optical switching path corresponding to a destination node of service traffic flowing from an external service network, generating an optical frame corresponding to the generated optical switching path, transmitting, to a control server, a request message for requesting an allocation of a time slot to transmit the generated optical frame, generating an optical signal having a predetermined wavelength to transmit the optical frame in response to an admission message being received as a result of admission with respect to the request message, and transferring the optical frame to the destination node based on the optical switching path using the generated optical signal.
    Type: Application
    Filed: June 15, 2017
    Publication date: April 19, 2018
    Inventors: Daeub KIM, Jongtae SONG, Sun Me KIM, Chansung PARK, Tae Whan YOO, Ji Wook YOUN, Kyeong-Eun HAN
  • Patent number: 8988982
    Abstract: A method of performing protection switching in a network including a first node and a plurality of second nodes that are connected to the first node is provided. The first node counts the number of obstacles that have occurred in a plurality of paths that are connected between the plurality of second nodes, and if the counted number is smaller than a predetermined threshold value, the first node performs protection switching per leaf. Alternatively, if the counted number is equal to or larger than a predetermined threshold value, the first node performs protection switching per tree.
    Type: Grant
    Filed: October 11, 2012
    Date of Patent: March 24, 2015
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Daeub Kim, Jeong-dong Ryoo, Taesik Cheung
  • Publication number: 20140219080
    Abstract: In a multi-domain network in which at least one working interconnected node and at least one protection interconnected node are formed between a first service end node and a second service end node, when a failure has occurred in both a working transport entity and a first protection transport entity of a node, a node having recognized a failure performs switching to a second protection transport entity that is connected to a corresponding interconnected node.
    Type: Application
    Filed: January 30, 2014
    Publication date: August 7, 2014
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Daeub KIM, Taesik CHEUNG, Jeong-dong RYOO
  • Publication number: 20110044166
    Abstract: A ring protection link (RPL) owner node in a ring network transmits a ring-automatic protection switching (R-APS) frame in a burst mode until blocked ports of all nodes except the RPL owner node have been unblocked, and, if it is determined that all the nodes have been unblocked, transmits the R-APS frame in a continuous mode. In this manner, the time required to unblock all the nodes can be reduced.
    Type: Application
    Filed: August 18, 2010
    Publication date: February 24, 2011
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Sang-Min LEE, Jeong-dong RYOO, Daeub KIM
  • Publication number: 20100302967
    Abstract: A node generates a delay measurement frame and transmits it to an adjacent node of an Ethernet ring network in order to measure a delay of the network. The node receives the delay measurement frame generated by the node from another adjacent node of the ring network, and measures a network delay by using the received delay measurement frame.
    Type: Application
    Filed: May 28, 2010
    Publication date: December 2, 2010
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Sang-Min LEE, Jeong-dong RYOO, Daeub KIM, Jea Hoon YU, Tae Whan YOO
  • Publication number: 20100290340
    Abstract: A method for protection switching of a ring network, which includes a plurality of nodes disposed in a ring shape, includes: allowing a node adjacent to a failure link among the plurality of nodes to generate a failure protection switching frame when the failure link is generated in the ring network; allowing the node adjacent to the failure link to transmit the failure protection switching frame to an adjacent node; allowing each of the plurality of nodes to delete address lists connected with the ring network except for an external network (hereinafter referred to as subnet) from their own forwarding table; allowing each of the plurality of nodes to transmit a subnet address list protection switching frame including a subnet address list; and allowing a node receiving the subnet address list protection switching frame to update the forwarding table on the basis of the subnet address list included in the frame.
    Type: Application
    Filed: May 6, 2010
    Publication date: November 18, 2010
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Kwang Koog LEE, Jeong-dong RYOO, Sang-Min LEE, Daeub KIM, Jea Hoon YU, Tae Whan YOO
  • Publication number: 20100226245
    Abstract: A method and apparatus for protection switching in a ring network are provided. A method for protection switching in a ring network, which includes a first ring network having first and second connection nodes and a second ring network connected with the first ring network through the first and second connection nodes, includes: receiving, by the first connection node, first and second R-APS messages transmitted from nodes belonging to the first ring network; determining, by the first connection node, the position of closure in the first ring network by using the first and second R-APS messages and topology information; receiving, by the first connection node, a topology change signal transmitted from the second ring network; and transmitting, by the first connection node, an FDB flush message with reference to the position of closure.
    Type: Application
    Filed: February 16, 2010
    Publication date: September 9, 2010
    Inventors: Jeong-Dong RYOO, Sang-Min LEE, Daeub KIM, Bhum-Cheol LEE
  • Publication number: 20100111165
    Abstract: Provided is a network flow-based scalable video coding (SVC) adaptation device. Without permitting a network transmitting end to divide image data into image data having various levels of quality and send the image data having the various levels of quality to all networks, since an adaptation device is installed in a network device of an ingress of a lower network of a subscriber and the adaptation device and the network transmitting end share network information about attributes of a terminal and the lower network of the subscriber so as to provide an image service having image quality corresponding to the terminal to the terminal, network efficiency can be maximized.
    Type: Application
    Filed: September 16, 2009
    Publication date: May 6, 2010
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Daeub KIM, Jeong-Dong RYOO, Sang-Min LEE, Bhum-Cheol LEE
  • Patent number: 7185134
    Abstract: An apparatus for managing Ethernet physical layer registers and a method thereof are provided. The apparatus comprises a central processing unit (CPU) with an external bus interface function, and an interface conversion unit which is connected to the CPU through the external bus interface, converts the external bus interface into management data input/output (MDIO) interface and performs communications with the physical layer apparatus.
    Type: Grant
    Filed: November 6, 2003
    Date of Patent: February 27, 2007
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Daeub Kim, Bheom Soon Joo, Hae Won Jung, Hyeong Ho Lee
  • Publication number: 20040103198
    Abstract: An apparatus for managing Ethernet physical layer registers and a method thereof are provided. The apparatus comprises a central processing unit (CPU) with an external bus interface function, and an interface conversion unit which is connected to the CPU through the external bus interface, converts the external bus interface into management data input/output (MDIO) interface and performs communications with the physical layer apparatus.
    Type: Application
    Filed: November 6, 2003
    Publication date: May 27, 2004
    Inventors: Daeub Kim, Bheom Soon Joo, Hae Won Jung, Hyeong Ho Lee