Patents Assigned to Electronics & Telecommunications Research Institute
  • Publication number: 20190261388
    Abstract: There is provided a method for transmitting, by a transmitter, a signal through an unlicensed band channel. The transmitter transmits an initial signal through the unlicensed band channel to preoccupy the unlicensed band channel when the unlicensed band channel is in an idle status. The transmitter includes a first partial subframe transmitted after the initial signal in a frame burst depending to transmission timing of the initial signal. Further, the transmitter transmits the frame burst through the unlicensed band channel.
    Type: Application
    Filed: May 2, 2019
    Publication date: August 22, 2019
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Chanho YOON, Young Jo KO, Seung-Kwon BAEK, Eunkyung KIM
  • Publication number: 20190260811
    Abstract: A packet data unit session establishment method and network entity performing the same is disclosed. User equipment (UE) may establish registration with the core network through a first access network when the UE is registered in a core network through a second access network belonging to the network and a first PDU session is established through the second access network. The UE may transmit a non-access stratum (NAS) message including a PDU session identifier (ID) that is the same as an ID of the first PDU session to an access and mobility management function (AMF).
    Type: Application
    Filed: February 15, 2019
    Publication date: August 22, 2019
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Changki KIM, Yoo Hwa KANG, Jeoung Lak HA
  • Publication number: 20190261006
    Abstract: The present invention relates to a method and device for sharing a candidate list. A method of generating a merging candidate list for a predictive block may include: producing, on the basis of a coding block including a predictive block on which a parallel merging process is performed, at least one of a spatial merging candidate and a temporal merging candidate of the predictive block; and generating a single merging candidate list for the coding block on the basis of the produced merging candidate. Thus, it is possible to increase processing speeds for coding and decoding by performing inter-picture prediction in parallel on a plurality of predictive blocks.
    Type: Application
    Filed: May 1, 2019
    Publication date: August 22, 2019
    Applicants: Electronics and Telecommunications Research Institute, UNIVERSITY-INDUSTRY COOPERATION GROUP OF KYUNG HEE UNIVERSITY
    Inventors: Hui Yong KIM, Gwang Hoon PARK, Kyung Yong KIM, Sang Min KIM, Sung Chang LIM, Jin Ho LEE, Jin Soo CHOI, Jin Woong KIM
  • Publication number: 20190260714
    Abstract: Disclosed is a method of operating a software-defined network (SDN) controller located in a decentralized SDN including a plurality of SDN switches and a plurality of SDN controllers, the method including receiving a transaction including network event information from at least one SDN switch of the plurality of SDN switches, determining a block generation entity with at least one other SDN controller based on a consensus algorithm, and, when the SDN controller is determined as the block generation entity, generating a block including the transaction and propagating the block to the at least one other SDN controller and the plurality of SDN switches. Also, a corresponding method of operating a SDN switch is disclosed.
    Type: Application
    Filed: January 30, 2019
    Publication date: August 22, 2019
    Applicant: Electronics and Telecommunications Research Institute
    Inventor: Hwan Jo HEO
  • Publication number: 20190261214
    Abstract: Disclosed are operation methods of communication node supporting direct communications in network. The operation method comprises obtaining scheduling information configured for the direct communications from a first base station; identifying modulation and coding scheme (MCS) information and radio resource information included in the scheduling information; and transmitting, to a second UE, a first message to which a MCS indicated by the MCS information is applied through radio resources indicated by the radio resource information. Therefore, performance of a communication system can be enhanced.
    Type: Application
    Filed: May 2, 2019
    Publication date: August 22, 2019
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Jae Heung KIM, Ji Hyung KIM, Mi Young YUN, Eun Ah KIM, Kyoung Seok LEE
  • Publication number: 20190259399
    Abstract: An audio encoding apparatus to encode an audio signal using lossless coding or lossy coding and an audio decoding apparatus to decode an encoded audio signal are disclosed. An audio encoding apparatus according to an exemplary embodiment may include an input signal type determination unit to determine a type of an input signal based on characteristics of the input signal, a residual signal generation unit to generate a residual signal based on an output signal from the input signal type determination unit, and a coding unit to perform lossless coding or lossy coding using the residual signal.
    Type: Application
    Filed: May 6, 2019
    Publication date: August 22, 2019
    Applicants: Electronics and Telecommunications Research Institute, THE KOREA DEVELOPMENT BANK
    Inventors: Seung Kwon BEACK, Tae Jin LEE, Jong Mo SUNG, Kyeong Ok KANG, Keun Woo CHOI
  • Patent number: 10389823
    Abstract: Disclosed herein are a method and apparatus for detecting a network service. The network service detection method includes generating pieces of required resource information for respective Virtual Network Functions (VNFs) with respect to one or more VNFs provided by a network, generating multiple deployment combinations by deploying the one or more VNFs on multiple servers constituting the network, calculating deployment combination resources required by respective multiple deployment combinations, based on the pieces of required resource information for respective VNFs, and detecting an executable deployment combination, among the multiple deployment combinations, as a network service that is capable of being provided by the network by comparing the deployment combination resources with pieces of specification information corresponding to the multiple servers.
    Type: Grant
    Filed: February 23, 2017
    Date of Patent: August 20, 2019
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventor: Yun-Chul Choi
  • Patent number: 10387639
    Abstract: An application programming interface (API) authentication method using two API tokens which includes issuing a general API token and providing information required for a one-time API token to a user device; and in response to an API request from the user device, processing an API request according to a result of authentication based on the general API token and a one-time API token, which is generated using the information required for a one-time API token creation.
    Type: Grant
    Filed: December 8, 2016
    Date of Patent: August 20, 2019
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Hong Seok Jeon, Bhum Cheol Lee
  • Patent number: 10388062
    Abstract: Disclosed herein are a virtual content-mixing method for augmented reality and an apparatus for the same. The virtual content-mixing method includes generating lighting physical-modeling data based on actual lighting information for outputting virtual content, generating camera physical-modeling data by acquiring a plurality of parameters corresponding to a camera, and mixing the virtual content with an image that is input through an RGB camera, based on the lighting physical-modeling data and the camera physical-modeling data.
    Type: Grant
    Filed: December 5, 2017
    Date of Patent: August 20, 2019
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Yu-Gu Jung, Jae-Hwan Kim, Ho-Won Kim, Byung-Ok Han, Chang-Joon Park, Gil-Haeng Lee
  • Patent number: 10388275
    Abstract: The present invention relates to a method and apparatus for improving spontaneous speech recognition performance. The present invention is directed to providing a method and apparatus for improving spontaneous speech recognition performance by extracting a phase feature as well as a magnitude feature of a voice signal transformed to the frequency domain, detecting a syllabic nucleus on the basis of a deep neural network using a multi-frame output, determining a speaking rate by dividing the number of syllabic nuclei by a voice section interval detected by a voice detector, calculating a length variation or an overlap factor according to the speaking rate, and performing cepstrum length normalization or time scale modification with a voice length appropriate for an acoustic model.
    Type: Grant
    Filed: September 7, 2017
    Date of Patent: August 20, 2019
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Hyun Woo Kim, Ho Young Jung, Jeon Gue Park, Yun Keun Lee
  • Patent number: 10390179
    Abstract: Disclosed herein are a user-participation data selection apparatus and method for updating a positioning infrastructure DB. The user user-participation data selection apparatus includes a data communication unit for transmitting and receiving user-participation data, a movement path reconstruction unit for reconstructing an entire information movement path corresponding to the user-participation data using all information included in the user-participation data, a reliability calculation unit for calculating reliability corresponding to the entire information movement path, and a data selection unit for selecting update-use data for updating a positioning infrastructure DB based on the reliability.
    Type: Grant
    Filed: August 11, 2017
    Date of Patent: August 20, 2019
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Myung-In Ji, Young-Su Cho, Joo-Young Kim, Ju-Il Jeon, Sang-Joon Park
  • Patent number: 10389510
    Abstract: An apparatus for canceling a self-interference signal and a transceiver including the same are disclosed. The transceiver may include an antenna; a circulator transmitting a portion of a transmit signal to the antenna and transmitting a receive signal received through the antenna to a receiver; and a self-interference signal canceling unit receiving a first signal, which is a portion of the transmit signal, and physically copying a self-interference signal generated by the antenna and the circulator to generate an estimation signal of the self-interference signal.
    Type: Grant
    Filed: July 21, 2017
    Date of Patent: August 20, 2019
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventor: Sung Jun Lee
  • Patent number: 10389973
    Abstract: An apparatus and method for broadcast signal frame using layered division multiplexing are disclosed. An apparatus for generating broadcast signal frame according to an embodiment of the present invention includes a combiner configured to generate a multiplexed signal by combining a core layer signal and an enhanced layer signal at different power levels; a power normalizer configured to reduce the power of the multiplexed signal to a power level corresponding to the core layer signal; a time interleaver configured to generate a time-interleaved signal by performing interleaving that is applied to both the core layer signal and the enhanced layer signal; and a frame builder configured to generate a broadcast signal frame including a preamble for signaling, size information of Physical Layer Pipes (PLPs) and time interleaver information shared by the core layer signal and the enhanced layer signal.
    Type: Grant
    Filed: August 24, 2018
    Date of Patent: August 20, 2019
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Jae-Young Lee, Sung-Ik Park, Sun-Hyoung Kwon, Heung-Mook Kim
  • Publication number: 20190252748
    Abstract: Disclosed is a multimode microwave filter including a resonator in which a cavity is formed to generate a resonant mode and a plurality of irises formed on a side surface of the resonator, in which the cavity of the resonator has a rhombus-shaped cross section.
    Type: Application
    Filed: October 19, 2018
    Publication date: August 15, 2019
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Changsoo KWAK, IN BOK YOM, So-hyeun YUN, Hongyeol LEE
  • Publication number: 20190253823
    Abstract: Provided is a stereophonic sound reproducing apparatus that applies a multi-rendering scheme to a channel sound signal and an object sound signal to enhance a stereophonic effect. A stereophonic sound reproducing method performed by the stereophonic sound reproducing apparatus may include receiving a channel sound signal based on a channel, an object sound signal based on an object, and metadata, and reproducing the channel sound signal based on a preset rendering scheme and reproducing, based on the metadata including a rendering scheme determined using the object sound signal, each object sound signal using the determined rendering scheme.
    Type: Application
    Filed: May 21, 2018
    Publication date: August 15, 2019
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Dae Young JANG, Yong Ju LEE, Jae-hyoun YOO, Sang Won SUH
  • Publication number: 20190254004
    Abstract: Provided are a system and method for collaboratively selecting resources in which the reliability of transmission data is ensured and the efficiency of a transmission channel is maximized. The system for collaboratively selecting resources includes a packet generator, a selector configured to select resources in consideration of a determinant including at least one of information on a packet and transmission environment information of the packet, and a packet transmitter configured to transmit the packet through the selected resources.
    Type: Application
    Filed: January 25, 2019
    Publication date: August 15, 2019
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Yoo Seung SONG, Do Wook KANG, Shin Kyung LEE, Jeong Woo LEE, Hyun Seo OH
  • Publication number: 20190253079
    Abstract: A parity interleaving apparatus and method for variable length signaling information are disclosed. A parity interleaving apparatus according to an embodiment of the present invention includes a processor configured to generate a parity bit string for parity puncturing by segmenting parity bits of an LDPC codeword whose length is 16200 and whose code rate is 3/15, into a plurality of groups, and group-wise interleaving the groups using an order of group-wise interleaving; and memory configured to provide the parity bit string for parity puncturing to a parity puncturing unit.
    Type: Application
    Filed: April 26, 2019
    Publication date: August 15, 2019
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Sung-Ik PARK, Sun-Hyoung KWON, Jae-Young LEE, Heung-Mook KIM
  • Publication number: 20190254039
    Abstract: Provided is an apparatus and method for transmitting and receiving data using multiple paths in a wireless communication system using a distributed Media Access Control (MAC). More particularly, provided is an apparatus and method for transmitting and receiving data that may select a path with a better channel status from multiple paths that include a direct path using a Line of Sight (LOS) and a relay path passing through a relay apparatus, in a wireless communication system that may transmit data via the LOS using a distributed MAC and a directional antenna.
    Type: Application
    Filed: April 29, 2019
    Publication date: August 15, 2019
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Hyoung Jin KWON, Jin Kyeong KIM, Yong Sun KIM, Kyeongpyo KIM, Seung Eun HONG, Woo Yong LEE
  • Publication number: 20190253135
    Abstract: Disclosed are a communication method and communication apparatus using an ambient backscatter communication. A transmission apparatus may include generating a plurality of bitsets by fragmenting data based on a predetermined bitset length, mapping the plurality of bitsets to a plurality of switching patterns based on a data size, and controlling a reflection of a background radio frequency (RF) signal based on a corresponding mapped switching pattern, a total number of the plurality of switching patterns may be determined based on the bitset length, and each of the plurality of switching patterns may have a different length.
    Type: Application
    Filed: November 28, 2018
    Publication date: August 15, 2019
    Applicants: Electronics and Telecommunications Research Institute, FOUNDATION FOR RESEARCH AND BUSINESS, SEOUL NATIONAL UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Byung Jang JEONG, Woo Jin BYUN, Ji-Hoon YUN, Jae-Han LIM, Wisnu MURTI
  • Patent number: 10379891
    Abstract: Disclosed herein are an apparatus and method for in-memory-based virtual desktop service. The apparatus for in-memory-based virtual desktop service includes a connection broker for performing a task for coordinating a delivery protocol that is used between at least one user terminal that uses virtual desktop service and multiple servers that provide the virtual desktop service, a resource pool for providing software resources including an Operating System (OS) for the virtual desktop service; and virtual machine infrastructure for supporting hardware resources, and dynamically allocating software stored in the software resources to the hardware resources.
    Type: Grant
    Filed: April 7, 2016
    Date of Patent: August 13, 2019
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Soo-Cheol Oh, Dae-Won Kim, Sun-Wook Kim, Jong-Bae Moon, Myeong-Hoon Oh, Byeong-Thaek Oh, Jung-Hyun Cho, Seong-Woon Kim, Hag-Young Kim, Ji-Hyeok Choi