Patents by Inventor Ji-Wook Youn
Ji-Wook Youn 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).
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Patent number: 9001847Abstract: Disclosed are an apparatus and a method for mapping an SDH signal and other 40-Gbps client signals through a single data path. The mapping apparatus supports both a justification byte mapping scheme and a sigma-delta distribution mapping scheme and implements a single data path. Accordingly, power consumption may be reduced by changing each mapping mode in a hitless manner or minimizing logic capacity according to a mapping mode used in the mapping apparatus.Type: GrantFiled: November 29, 2011Date of Patent: April 7, 2015Assignee: Electronics and Telecommunications Research InstituteInventors: Jong Yoon Shin, Jong Ho Kim, Ji Wook Youn
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Patent number: 8983286Abstract: A node of an optical transport network system transmits optical wavelengths to an adjacent node through an operational line. An apparatus for protection switching of the optical transport network system transmits only an optical channel with a fault among a plurality of optical channels composed of flexible optical channel data units in an optical wavelength of the operational line, via a reserve line.Type: GrantFiled: November 8, 2012Date of Patent: March 17, 2015Assignee: Electronics and Telecommunications Research InstituteInventors: Ji Wook Youn, Jongho Kim, Jong-Yoon Shin
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Patent number: 8867528Abstract: Provided is a packet/TDM switch that may classify a type of a received signal based on slot recognition information received from an Ethernet mapping unit or a TDM mapping unit, and may process the received signal using a dedicated switch corresponding to each of the Ethernet mapping unit and the TDM mapping unit according to the type of the received signal.Type: GrantFiled: September 16, 2010Date of Patent: October 21, 2014Assignee: Electronics and Telecommunications Research InstituteInventors: Hong Ju Kim, Ji Wook Youn, Bup Joong Kim, Hyun Jae Lee, Jae Hoon Yu
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Patent number: 8699524Abstract: There is provided a source node apparatus including: a Bandwidth Resize (BWR) generator configured to insert an InRP signal and an InTSCC signal into OPUflex Resize Control Overhead (RCOH) and to transmit the resultant OPUflex RCOH; and a BWR relay generator configured to insert an Resizing Protocol indicator (RP) signal and a Tributary Slot Connectivity Check (TSCC) signal into higher order OPUk RCOH with reference to the InRP signal and the InTSCC signal included in the OPUflex RCOH transmitted by the BWR generator, and transmit the resultant higher order OPUk RCOH.Type: GrantFiled: May 3, 2012Date of Patent: April 15, 2014Assignee: Electronics and Telecommunications Research InstituteInventors: Ji-Wook Youn, Jong-Yoon Shin, Jong-Ho Kim
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Publication number: 20140086581Abstract: There is provided a method for resizing a network connection in an optical transport network that supports protection switching and receives a flexible Optical channel Data Unit (ODUflex(GFP)) signal. In addition, at nodes located on a protection path for protection switching, only a Link Connection Resize (LCR) protocol, except for a Bandwidth Resize (BWR) protocol, of Hitless Adjustment of ODUflex(GFP) (HAO) procedure is executed. On the other hand, both the LCR protocol and the BWR protocol are executed at nodes located on a working path for protection switching.Type: ApplicationFiled: August 13, 2013Publication date: March 27, 2014Applicant: Electronics and Telecommunications Research InstituteInventor: Ji-Wook YOUN
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Publication number: 20140050470Abstract: There is provided a method for resizing a network connection in an optical transport network that supports protection switching and receives a flexible Optical channel Data (ODUflex(GFP)) signal. In addition, Hitless Adjustment of ODUflex(GFP) (HAO) procedure includes Suppress Bandwidth Resize (SBR) information that prevents a Bandwidth Resize (BWR) protocol from being initiated. Based on the SBR information, only the LCR protocol is executed at nodes located on a protection path for protection switching, except for the BWR protocol. On the other hand, both the LCR protocol and the BWR protocol are executed at nodes located on a working path.Type: ApplicationFiled: August 13, 2013Publication date: February 20, 2014Applicant: Electronics and Telecommunications Research InstituteInventor: Ji-Wook YOUN
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Publication number: 20130243417Abstract: A node of an optical transport network system transmits optical wavelengths to an adjacent node through an operational line. An apparatus for protection switching of the optical transport network system transmits only an optical channel with a fault among a plurality of optical channels composed of flexible optical channel data units in an optical wavelength of the operational line, via a reserve line.Type: ApplicationFiled: November 8, 2012Publication date: September 19, 2013Applicant: Electronics and Telecommunications Research InstituteInventors: Ji Wook YOUN, Jongho KIM, Jong-Yoon SHIN
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Patent number: 8351784Abstract: A packet-optical integrated switch without an optical transponder, includes: a packet line card configured to output an Ethernet packet signal to a pre-set output port; a packet switch fabric configured to transfer the packet signal from the packet line card to the output port previously set in a destination address included in the packet signal; a 10 gigabit Ethernet (10 GbE)/optical transport unit level 2 (OTU2) integrated line card configured to convert the packet signal from the packet switch fabric into an OTU2 optical signal having a pre-set wavelength; and a wavelength selection switch fabric configured to allocate the optical signal from the 10 GbE/OTU2 integrated line card to a pre-set wavelength division multiplexing (WDM) port by pre-set wavelength to exchange the optical signal to each port by wavelength, wherein the packet line card, the packet switch fabric, the 10 GbE/OTU2 integrated line card, and the wavelength selection switch fabric perform the reverse operations of the process, respectivelType: GrantFiled: December 1, 2009Date of Patent: January 8, 2013Assignee: Electronics and Telecommunications Research InstituteInventors: Hong Ju Kim, Hyun Woo Cho, Ji Wook Youn, Hyun Jae Lee, Bup Joong Kim, Sun Me Kim, Byung Jun Ahn
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Publication number: 20120288277Abstract: A transmission apparatus and method for serial and parallel channel interworking in an optical transport network are provided. The transmission apparatus for serial and parallel channel interworking ensures interworking between parallel optical modules or between parallel and serial optical modules, regardless of a protocol, without having to add logics or with only a minimum number of logics, in order to manufacture a small-size optical module with low power consumption.Type: ApplicationFiled: May 9, 2012Publication date: November 15, 2012Applicant: Electronics and Telecommunications Research InstituteInventors: Jong-Yoon SHIN, Jong-Ho KIM, Ji-Wook YOUN
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Publication number: 20120281983Abstract: There is provided a source node apparatus including: a Bandwidth Resize (BWR) generator configured to insert an InRP signal and an InTSCC signal into OPUflex Resize Control Overhead (RCOH) and to transmit the resultant OPUflex RCOH; and a BWR relay generator configured to insert an Resizing Protocol indicator (RP) signal and a Tributary Slot Connectivity Check (TSCC) signal into higher order OPUk RCOH with reference to the InRP signal and the InTSCC signal included in the OPUflex RCOH transmitted by the BWR generator, and transmit the resultant higher order OPUk RCOH.Type: ApplicationFiled: May 3, 2012Publication date: November 8, 2012Applicant: Electronics and Telecommunications Research InstituteInventors: Ji-Wook YOUN, Jong-Yoon SHIN, Jong-Ho KIM
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Publication number: 20120163812Abstract: A packet transmitting method and apparatus in an optical transport network may be provided. The packet transmitting method may include sensing a request for transmitting a packet client signal of a predetermined capacity, during transmission operated based on an ODUflex(GFP) scheme, extending, to the predetermined capacity, a size of a connection link among a transmitting apparatus, a relay apparatus, and a receiving apparatus when the request is sensed, expanding, to the predetermined capacity, a bandwidth among the transmitting apparatus, the relay apparatus, and the receiving apparatus when the size of the connection link is extended, and transmitting the packet client signal by changing a transmission scheme from the ODUflex(GFP) scheme to an ODUk(GFP) scheme, when the bandwidth is expanded.Type: ApplicationFiled: December 21, 2011Publication date: June 28, 2012Applicant: Electronics and Telecommunications Research InstituteInventors: Ji Wook YOUN, Jong Yoon Shin
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Publication number: 20120134674Abstract: Disclosed are an apparatus and a method for mapping an SDH signal and other 40-Gbps client signals through a single data path. The mapping apparatus supports both a justification byte mapping scheme and a sigma-delta distribution mapping scheme and implements a single data path. Accordingly, power consumption may be reduced by changing each mapping mode in a hitless manner or minimizing logic capacity according to a mapping mode used in the mapping apparatus.Type: ApplicationFiled: November 29, 2011Publication date: May 31, 2012Applicant: Electronics and Telecommunications Research InstituteInventors: Jong Yoon SHIN, Jong Ho KIM, Ji Wook YOUN
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Publication number: 20110153847Abstract: A communication method of a first communication node of a combined node system including a plurality of communication nodes includes receiving data from at least one second communication node of the plurality of communication nodes, generating common control information by using the data, the common control information including data transmission path information between the plurality of communication nodes and an external communication apparatus which is on the outside of the combined node system, transmitting the common control information to the at least one second communication node, and communicating with the external communication apparatus through at least a part of the plurality of communication nodes on the basis of the common control information.Type: ApplicationFiled: October 15, 2010Publication date: June 23, 2011Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Bup Joong KIM, Ji Wook YOUN, Hong Ju KIM, Jea Hoon YU
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Publication number: 20110142438Abstract: In an optical transport network for packet transmission, at least one tunnel for providing an end-to-end connection between nodes is formed, and the tunnel includes at least one optical wavelength. A plurality of optical channels are allocated to each optical wavelength, and one optical channel is set up as an optical channel for protection switching for the tunnel. If a failure occurs in an optical channel in packet transmission, packets are transmitted through the optical channel for protection switching set up for the corresponding tunnel.Type: ApplicationFiled: December 9, 2010Publication date: June 16, 2011Applicant: Electronics and Telecommunications Research InstituteInventors: Ji Wook YOUN, Bup Joong KIM, Hong Ju KIM
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Publication number: 20110142036Abstract: Provided is a packet/TDM switch that may classify a type of a received signal based on slot recognition information received from an Ethernet mapping unit or a TDM mapping unit, and may process the received signal using a dedicated switch corresponding to each of the Ethernet mapping unit and the TDM mapping unit according to the type of the received signal.Type: ApplicationFiled: September 16, 2010Publication date: June 16, 2011Applicant: Electronics and Telecommunications Research InstituteInventors: Hong Ju KIM, Ji Wook YOUN, Bup Joong KIM, Hyun Jae LEE, Jae Hoon YU
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Patent number: 7944841Abstract: Provided are a method and apparatus for transmitting error information between an Ethernet network and a synchronous digital hierarchy (SDH) network. According to the present invention, when an error occurs in the Ethernet network or the SDH network, OAM information is transferred to the opposite network by using a conventional MAC control frame from a linked part of the Ethernet network and the SDH network and thus the EoS network may be efficiently operated and managed. Also, by using standardized MAC control frame, the present invention may be applied to an existing system without additionally changing hardware or defining a new OAM frame.Type: GrantFiled: November 29, 2007Date of Patent: May 17, 2011Assignee: Electronic and Telecommunications Research InstituteInventors: Ji-Wook Youn, Bheom-Soon Joo, Jung-Sik Kim
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Publication number: 20100254406Abstract: Provided is a quality of service (QoS) management method in an Ethernet-based next generation network (NGN) including a plurality of Ethernet virtual connections (EVCs). A bandwidth is allocated to each of a plurality of frames based on classes of service (CoSs), physical ports, service types, and Layer 2 (L2)/Layer 3 (L3) information.Type: ApplicationFiled: September 5, 2008Publication date: October 7, 2010Applicant: Electronics and Telecommunications Research InstituteInventors: Ji-Wook Youn, Byungjun Ahn, Kyeong-Ho Lee, Hae-Won Jung
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Publication number: 20100135659Abstract: A packet-optical integrated switch without an optical transponder, includes: a packet line card configured to output an Ethernet packet signal to a pre-set output port; a packet switch fabric configured to transfer the packet signal from the packet line card to the output port previously set in a destination address included in the packet signal; a 10 gigabit Ethernet (10 GbE)/optical transport unit level 2 (OTU2) integrated line card configured to convert the packet signal from the packet switch fabric into an OTU2 optical signal having a pre-set wavelength; and a wavelength selection switch fabric configured to allocate the optical signal from the 10 GbE/OTU2 integrated line card to a pre-set wavelength division multiplexing (WDM) port by pre-set wavelength to exchange the optical signal to each port by wavelength, wherein the packet line card, the packet switch fabric, the 10 GbE/OTU2 integrated line card, and the wavelength selection switch fabric perform the reverse operations of the process, respectivelType: ApplicationFiled: December 1, 2009Publication date: June 3, 2010Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Hong Ju KIM, Hyun Woo Cho, Ji Wook Youn, Hyun Jae Lee, Bup Joong Kim, Sun Me Kim, Byung Jun Ahn
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Publication number: 20100135661Abstract: An Ethernet-based next generation optical transport network apparatus and a traffic grooming method in the apparatus are disclosed to provide a traffic grooming function to simultaneously transmit Ethernet data and a TDM signal through the same wavelength and provide a differentiated protection switching function by the flows to effectively support an Ethernet service in an optical transport network.Type: ApplicationFiled: October 20, 2009Publication date: June 3, 2010Applicant: Electronics and Telecommunications Research InstituteInventors: Ji Wook YOUN, Hong Ju KIM, Byung Jun AHN
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Patent number: 7724667Abstract: Provided are an Ethernet line card and a method of providing various services using the same. The Ethernet line card includes: a priority allocation unit setting a priority of a received Ethernet packet according to a pre-set control standard based on header information of the Ethernet packet; a quality of service (QoS) guarantee unit defining a capacity per class based on a pre-set QoS standard, inserting the Ethernet packet into a relevant class, and dropping and managing the Ethernet packet based on the priority if the Ethernet packet exceeds a capacity of the relevant class; and a signal processing unit managing and updating the pre-set control standard and the pre-set QoS standard, receiving results of processing the Ethernet packet from the priority allocation unit and the QoS guarantee unit, and storing the received results.Type: GrantFiled: December 5, 2006Date of Patent: May 25, 2010Assignee: Electronics And Telecommunications Research InstituteInventors: Ji Wook Youn, Hyung Joo Kim, Jong Hyun Lee