Patents by Inventor Kyeong-Eun Han

Kyeong-Eun Han 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).

  • Publication number: 20150281051
    Abstract: Provided is a method and apparatus for creating a virtual traffic engineering (TE) link in an upper layer of an optical transport network (OTN). To create a virtual TE link, a node may determine to create the virtual TE link in an upper layer of an OTN, and may set up a forwarding adjacency (FA)-label switched path (LSP) between nodes in an OTN layer. The FA-LSP may be set up on a control plane of the OTN layer. The node may create the virtual TE link by registering the setup FA-LSP as a TE link of the upper layer of the node.
    Type: Application
    Filed: March 20, 2015
    Publication date: October 1, 2015
    Inventors: Kyeong Eun HAN, Sun Me KIM, Tae Hyun KWON, Eun Young CHO, Jong Hyun LEE
  • Patent number: 9059844
    Abstract: A high-speed Ethernet apparatus having a multiple lane configuration and method for selectively operating the multiple lanes to allow lanes to participate or not in data transmission and reception. The Ethernet apparatus includes: a transfer rate control unit to set a state of each of multiple physical coding sub-layer (PCS) lanes inside to be the same as a state of corresponding each of multiple physical transmission lanes based on state change information that indicates whether the each physical transmission lane is activated or not, and to remove idle blocks from data blocks which are received at a transfer rate of a physical transmission lane in active state among the multiple physical transmission lanes; and a block allocating unit to allocate the data blocks from which the idle blocks have been removed through PCS lanes in active state that correspond to the physical transmission lanes in active state.
    Type: Grant
    Filed: December 14, 2011
    Date of Patent: June 16, 2015
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Kye-Hyun Ahn, Choong-Reol Yang, Seung-Hwan Kim, Kyeong-Eun Han
  • Publication number: 20140198635
    Abstract: A method of recovering a fault in a multilayer network and an apparatus thereof are provided, the method including obtaining lower layer backup path setting information through a signaling message that is used for a label based path setting, setting a backup path at a lower layer based on the obtained lower layer backup path setting information, and upon detecting a fault at the lower layer, performing a protection switching through the set backup path at the lower layer.
    Type: Application
    Filed: August 30, 2013
    Publication date: July 17, 2014
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Kyeong-Eun HAN, Sun-Me KIM, Tae-Hyun KWON, Tae-Il KIM, Jong-Hyun Lee
  • Publication number: 20140078918
    Abstract: Provided are a power-saving apparatus and method for multi-lane-based Ethernet, which allow a multi-lane-based Ethernet apparatus to improve energy-conserving efficiency while minimizing the deterioration of the performance of a network. The power-saving apparatus includes: a multi-lane communication unit configured to distribute an input communication packet between a plurality of transmission lanes, photoelectrically convert the input communication packet and transmit the photoelectrically-converted communication packet; a multi-buffer unit configured to comprise one or more buffers, store the input communication packet in each active buffer and transmit the input communication packet to the multi-lane communication unit; and a control unit configured to monitor the multi-buffer unit, compare the size of memory space in use of the multi-buffer unit with a predefined threshold and switch the one or more buffers to an active or inactive state based on the results of the comparison.
    Type: Application
    Filed: July 29, 2013
    Publication date: March 20, 2014
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Kyeong-Eun HAN, Sun-Me KIM, Jong-Hyun LEE
  • Publication number: 20140078894
    Abstract: Provided are a multi-lane-based Ethernet lane fault recovery apparatus and method capable of detecting a lane fault separately from a link fault and identifying one or more lanes where the lane fault has occurred. The lane fault recovery apparatus includes a communication unit configured to comprise a plurality of data transmission lanes, distribute data between the plurality of data transmission lanes in response to the receipt of a control command and photoelectrically convert the data; and a connection processing unit configured to detect the occurrence of a fault from the plurality of data transmission lanes, exclude one or more faulty lanes where the fault has occurred from the plurality of data transmission lanes and transmit the data via the rest of the data transmission lanes that are available for use. The connection processing unit may be further configured to transmit data via a switched backup link.
    Type: Application
    Filed: August 12, 2013
    Publication date: March 20, 2014
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Kyeong-Eun HAN, Eun-Young Cho, Tae-Hyun Kwon, Sun-Me Kim, Jong-Hyun Lee
  • Patent number: 8437636
    Abstract: Provided are methods of transmitting and receiving a multicast or broadcast frame in an optical line terminal (OLT) and an optical network unit (ONU) for a wavelength division multiplexing (WDM)-passive optical network (PON), a WDM-PON system, and an OLT for a WDM-PON. The method of transmitting a multicast or broadcast frame in an OLT for a WDM-PON includes converting and splitting a multicast or broadcast frame input using a single wavelength into a plurality of wavelengths, combining the split wavelengths, and outputting the multicast or broadcast frame. In this way, a multicast or broadcast frame can be transmitted and received, thereby providing a single copy broadcast (SCB) function in a WDM-PON.
    Type: Grant
    Filed: October 15, 2009
    Date of Patent: May 7, 2013
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Kyeong-eun Han, Kwang-joon Kim
  • Publication number: 20130077623
    Abstract: Disclosed is an Ethernet apparatus having a plurality of lanes according to the present invention, including: a transmission lane identifying unit to identify a physical transmission lane according to a data transmission order by activating a transmitter, and by verifying data to be transmitted through the activated transmitter; and a transmission lane adjusting unit to adjust the physical transmission lane using information about the number of operable lanes and to transmit data through the adjusted physical transmission lane when the physical transmission lane is identified by the transmission lane identifying unit.
    Type: Application
    Filed: August 2, 2012
    Publication date: March 28, 2013
    Applicant: Electronics and Telecommunications Research Institute
    Inventor: Kyeong Eun HAN
  • Patent number: 8254291
    Abstract: An Ethernet device having multiple lanes and a method of operating the lanes are provided. In one general aspect, it is possible to allocate a dummy block to each of one or more lanes such that the lanes do not selectively participate in communications. In addition, on a receiving side, the dummy block can be removed from among the genuine data blocks to enable data to be decoded. In this case, an Ethernet device on a transmission side and an Ethernet device on a receiving side can exchange information of a lane to which the dummy block is allocated by use of a lane status message, and the lane status message may be based on a link fault message specified by Ethernet standards.
    Type: Grant
    Filed: December 15, 2009
    Date of Patent: August 28, 2012
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Kye-hyun Ahn, Seung-hwan Kim, Yong-tae Kim, Kyeong-eun Han, Kwang-joon Kim
  • Publication number: 20120155486
    Abstract: A high-speed Ethernet apparatus having a multiple lane configuration and method for selectively operating the multiple lanes to allow lanes to participate or not in data transmission and reception. The Ethernet apparatus includes: a transfer rate control unit to set a state of each of multiple physical coding sub-layer (PCS) lanes inside to be the same as a state of corresponding each of multiple physical transmission lanes based on state change information that indicates whether the each physical transmission lane is activated or not, and to remove idle blocks from data blocks which are received at a transfer rate of a physical transmission lane in active state among the multiple physical transmission lanes; and a block allocating unit to allocate the data blocks from which the idle blocks have been removed through PCS lanes in active state that correspond to the physical transmission lanes in active state.
    Type: Application
    Filed: December 14, 2011
    Publication date: June 21, 2012
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Kye-Hyun AHN, Choong-Reol Yang, Seung-Hwan Kim, Kyeong-Eun Han
  • Publication number: 20120044951
    Abstract: An alignment apparatus for dynamically operating lanes in a high speed Ethernet device having multiple lanes, includes: a PCS (Physical Coding Sublayer) upper layer managing lane information regarding all of the lanes and operational lanes; a PCS transmission unit receiving the lane information from the PCS upper layer and inserting an alignment marker into the operational lanes; a PMA (Physical Medium Attachment) layer receiving the alignment marker from the PCS transmission unit and transmitting the same, and receiving alignment marker from another alignment apparatus; and a PCS reception unit receiving the lane information from the PCS upper layer, receiving the alignment marker from the PMA layer, and performing alignment on the operational lanes.
    Type: Application
    Filed: December 6, 2010
    Publication date: February 23, 2012
    Applicant: Electronics and Telecommunications Research Institute
    Inventor: Kyeong Eun Han
  • Publication number: 20100329112
    Abstract: An Ethernet device having multiple lanes and a method of operating the lanes are provided. In one general aspect, it is possible to allocate a dummy block to each of one or more lanes such that the lanes do not selectively participate in communications. In addition, on a receiving side, the dummy block can be removed from among the genuine data blocks to enable data to be decoded. In this case, an Ethernet device on a transmission side and an Ethernet device on a receiving side can exchange information of a lane to which the dummy block is allocated by use of a lane status message, and the lane status message may be based on a link fault message specified by Ethernet standards.
    Type: Application
    Filed: December 15, 2009
    Publication date: December 30, 2010
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Kye-hyun AHN, Seung-hwan KIM, Yong-tae KIM, Kyeong-eun HAN, Kwang-joon KIM
  • Publication number: 20100158520
    Abstract: Provided are a local area network (LAN) emulation method and an information storage medium. The LAN emulation method provides a LAN emulation function in an arrayed-waveguide grating (AWG)-based wavelength division multiplexing (WDM)-passive optical network (PON) using a mode bit and a logical link identifier (LLID).
    Type: Application
    Filed: October 22, 2009
    Publication date: June 24, 2010
    Inventors: Kyeong-eun Han, Kwang-joon Kim
  • Publication number: 20100158523
    Abstract: Provided are methods of transmitting and receiving a multicast or broadcast frame in an optical line terminal (OLT) and an optical network unit (ONU) for a wavelength division multiplexing (WDM)-passive optical network (PON), a WDM-PON system, and an OLT for a WDM-PON. The method of transmitting a multicast or broadcast frame in an OLT for a WDM-PON includes converting and splitting a multicast or broadcast frame input using a single wavelength into a plurality of wavelengths, combining the split wavelengths, and outputting the multicast or broadcast frame. In this way, a multicast or broadcast frame can be transmitted and received, thereby providing a single copy broadcast (SCB) function in a WDM-PON.
    Type: Application
    Filed: October 15, 2009
    Publication date: June 24, 2010
    Inventors: Kyeong-eun Han, Kwang-joon Kim
  • Patent number: 7539211
    Abstract: A Dynamic bandwidth allocation method using OLT (Optical Line Terminal) and ONU (Optical Network Unit) for use in GE-PON (Gigabit Ethernet Passive Optical Network) system is disclosed. The OLT's scheduler performs scheduling upon receiving multiple-queue request information contained in the REPORT message from the ONU, and transmits a combined scheduling result associated with one ONU using a GATE message. An ONU's scheduler performs scheduling upon receiving a bandwidth allocated by the OLT, and allocates a transfer bandwidth to its own queues.
    Type: Grant
    Filed: October 22, 2003
    Date of Patent: May 26, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ho-Il Oh, Min-Hyo Lee, Su-Hyung Kim, Young-Seok Kim, Yun-Je Oh, Tae-Sung Park, Young-Chon Kim, Hyuk-Gyu Park, Kye-Hyun Ahn, Kyeong-Eun Han
  • Publication number: 20040252714
    Abstract: A Dynamic bandwidth allocation method using OLT (Optical Line Terminal) and ONU (Optical Network Unit) for use in GE-PON (Gigabit Ethernet Passive Optical Network) system is disclosed. The OLT's scheduler performs scheduling upon receiving multiple-queue request information contained in the REPORT message from the ONU, and transmits a combined scheduling result associated with one ONU using a GATE message. An ONU's scheduler performs scheduling upon receiving a bandwidth allocated by the OLT, and allocates a transfer bandwidth to its own queues.
    Type: Application
    Filed: October 22, 2003
    Publication date: December 16, 2004
    Inventors: Ho-Il Oh, Min-Hyo Lee, Su-Hyung Kim, Young-Seok Kim, Yun-Je Oh, Tae-Sung Park, Young-Chon Kim, Hyuk-Gyu Park, Kye-Hyun Ahn, Kyeong-Eun Han