Patents by Inventor Young-Jo Ko

Young-Jo Ko 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: 20210119755
    Abstract: Provided is a data transmission system using a carrier aggregation. The data transmission system may assign a radio resource based on a correspondence relationship between a downlink and an uplink, and may transmit data using the assigned radio resource.
    Type: Application
    Filed: December 3, 2020
    Publication date: April 22, 2021
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Young Jo KO, Tae Gyun NOH, Kyoung Seok LEE, Bang Won SEO, Byung Jang JEONG, Heesoo LEE
  • Patent number: 10979185
    Abstract: A reference signal (RS) transmission system to transmit a channel state information (CSI) RS for extraction of CSI to a relay and a macro terminal is disclosed. The base station transmits information on a sub frame containing the CSI RS to the relay or the macro terminal. The macro terminal and the relay receive the CSI RS using the information on the sub frame. The macro terminal and the relay extract the CSI using the CSI RS and transmit the extracted CSI to the base station.
    Type: Grant
    Filed: September 19, 2011
    Date of Patent: April 13, 2021
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Hee Soo Lee, Tae Gyun Noh, Jae Young Ahn, Kyoung Seok Lee, Young Jo Ko
  • Patent number: 10966199
    Abstract: A base station divides a subframe into a downlink time duration for downlink, an uplink time duration for uplink, and a guard period between the downlink time duration and the uplink time duration. The base station transmits a downlink control channel including information on a downlink packet duration allocated for downlink transmission of a terminal and information on an uplink packet duration allocated for uplink transmission of the terminal to the terminal in the downlink time duration.
    Type: Grant
    Filed: September 25, 2019
    Date of Patent: March 30, 2021
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Cheulsoon Kim, Eunkyung Kim, Gi Yoon Park, Young Jo Ko
  • Publication number: 20210092726
    Abstract: A method of transmitting and receiving a control channel in a wireless communication system is provided. A base station allocates a data channel to a radio resource, adds start position information of the data channel into a payload of a control channel, and performs signaling for indication information on the start position information added into the payload of the control channel to a terminal. Accordingly, the legacy system and the enhanced system can efficiently transmit a control channel.
    Type: Application
    Filed: December 3, 2020
    Publication date: March 25, 2021
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Tae Gyun NOH, Young Jo KO, Bang Won SEO, Jae Young AHN
  • Patent number: 10938534
    Abstract: Provided is a data transmission system using a carrier aggregation. The data transmission system may assign a radio resource based on a correspondence relationship between a downlink and an uplink, and may transmit data using the assigned radio resource.
    Type: Grant
    Filed: August 29, 2018
    Date of Patent: March 2, 2021
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Young Jo Ko, Tae Gyun Noh, Kyoung Seok Lee, Bang Won Seo, Byung Jang Jeong, Heesoo Lee
  • Patent number: 10932298
    Abstract: Disclosed is a method for effectively forming uplink control information transmitted through a downlink from a base station to a terminal in a mobile communication system for providing a packet service and transmitting the uplink control information with minimum radio resources occupied. The method includes generating uplink control information; allocating the uplink control information to a downlink-shared radio resource for packet data transmission based on downlink scheduling information; and transmitting the radio resource to a terminal. The present invention is applied to a mobile communication system.
    Type: Grant
    Filed: February 11, 2019
    Date of Patent: February 23, 2021
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jae-Heung Kim, Young-Jo Ko, Kyoung Seok Lee, Jung-Im Kim, Soo-Jung Jung
  • Patent number: 10917877
    Abstract: When a plurality of terminals share the same resources in a wireless communication system, and when control information such as acknowledgement/negative acknowledgement (ACK/NAK) information or scheduling information is transmitted, a method of efficiently performing code division multiplexing (CDM) is required to distinguish the plurality of terminals. In particular, it is necessary to develop a method by which a code sequence of CDM can be selected and used according to each cell condition. Provided is a method of forming a signal in a wireless communication system in which a plurality of terminals commonly share frequency and time resources. The method includes the operations of receiving condition information in a cell; selecting one of a plurality of time domain orthogonal sequences having different lengths, according to the condition information; and allocating the selected time domain orthogonal sequence to a control signal symbol block.
    Type: Grant
    Filed: January 22, 2019
    Date of Patent: February 9, 2021
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Young-Jo Ko, Hyeong-Geun Park, Il-Gyu Kim, Kapseok Chang, Hyoseok Yi, Young-Hoon Kim, Seung-Chan Bang
  • Publication number: 20210037554
    Abstract: A method and an apparatus for uplink transmission in a communication system. An operation method of a terminal includes: receiving, from a base station, first SFI information indicating n flexible symbol(s); receiving, from the base station, second SFI information re-indicating m symbol(s) of the n flexible symbol(s) as uplink (UL) symbol(s); and transmitting an SRS to the base station through the m symbol(s) re-indicated as a UL symbol among the n flexible symbol(s) indicated as a flexible symbol. Therefore, performance of the communication system can be improved.
    Type: Application
    Filed: April 4, 2019
    Publication date: February 4, 2021
    Inventors: Cheul Soon KIM, Gi Yoon PARK, Seung Kwon BAEK, Young Jo KO
  • Publication number: 20210036818
    Abstract: A wireless communication system includes a first transmitter and a second transmitter. For a transmission or reception of data of a first user equipment and data of a second user equipment on resources shared by the first user equipment and the second user equipment, the first transmitter is configured for a superimposed non-orthogonal multiple access, NOMA, transmission or reception of a first data signal of the first user equipment and a second data signal of the second user equipment, and the second transmitter is configured for a superimposed non-orthogonal multiple access, NOMA, transmission or reception of a third data signal of the first user equipment and a fourth data signal of the second user equipment.
    Type: Application
    Filed: August 14, 2020
    Publication date: February 4, 2021
    Inventors: Sameh ELDESSOKI, Johannes DOMMEL, Wooram SHIN, Thomas HAUSTEIN, Lars THIELE, Young-Jo KO, SeungKwon BAEK, Chanho YOON
  • Patent number: 10904823
    Abstract: Disclosed are a base station device and a terminal device. The base station device includes a signal generator to generate a synchronization channel signal based on the cell type of a cell that the base station device manages, and a transmitter to transmit the synchronization channel signal via a synchronization channel established between at least one terminal device and the base station device, wherein the cell type is classified based on the information of the scale of the cell and whether the cell selectively allows access. The terminal may quickly recognize the cell type in a cellular wireless communication system having a hierarchical cell structure.
    Type: Grant
    Filed: April 24, 2009
    Date of Patent: January 26, 2021
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Young-Jo Ko, Jae Young Ahn, Jae Heung Kim
  • Patent number: 10893525
    Abstract: A method of transmitting and receiving a control channel in a wireless communication system is provided. A base station allocates a data channel to a radio resource, adds start position information of the data channel into a payload of a control channel, and performs signaling for indication information on the start position information added into the payload of the control channel to a terminal. Accordingly, the legacy system and the enhanced system can efficiently transmit a control channel.
    Type: Grant
    Filed: April 30, 2019
    Date of Patent: January 12, 2021
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Tae Gyun Noh, Young Jo Ko, Bang Won Seo, Jae Young Ahn
  • Publication number: 20210007095
    Abstract: An apparatus serves a plurality of user equipments in a wireless communication system. For transmitting/receiving data of a plurality of user equipments, which include at least a first user equipment and a second user equipment, on resources shared by the plurality of user equipments, the apparatus transmits/receives a first data signal of the first user equipment and second data signal of the second user equipment using a non-orthogonal multiple access, NOMA, scheme. The first data signal and the second data signal are modulated using different waveforms prior to superposition of the first and second data signals.
    Type: Application
    Filed: August 14, 2020
    Publication date: January 7, 2021
    Inventors: Sameh ELDESSOKI, Johannes DOMMEL, Saeed AFRASIABI GORGANI, Wooram SHIN, Thomas HAUSTEIN, Lars THIELE, Young-Jo KO, SeungKwon BAEK
  • Patent number: 10873957
    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: Grant
    Filed: May 2, 2019
    Date of Patent: December 22, 2020
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Chanho Yoon, Young Jo Ko, Seung-Kwon Baek, Eunkyung Kim
  • Patent number: 10862651
    Abstract: Provided is a data transmission system using a carrier aggregation. The data transmission system may assign a radio resource based on a correspondence relationship between a downlink and an uplink, and may transmit data using the assigned radio resource.
    Type: Grant
    Filed: August 29, 2018
    Date of Patent: December 8, 2020
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Young Jo Ko, Tae Gyun Noh, Kyoung Seok Lee, Bang Won Seo, Byung Jang Jeong, Heesoo Lee
  • Patent number: 10862627
    Abstract: A terminal receives allocation of a unique first identifier of the terminal from a base station. The terminal generates first uplink data. The terminal applies interleaving based on the first identifier to the first uplink data to generate second uplink data.
    Type: Grant
    Filed: May 18, 2017
    Date of Patent: December 8, 2020
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Chanho Yoon, Young Jo Ko, Seung-Kwon Baek
  • Publication number: 20200383074
    Abstract: Disclosed are a method and an apparatus for transmitting and receiving a synchronization signal in a communication system. According to an exemplary embodiment of the present disclosure, a method of transmitting a first synchronization signal, performed by a base station in the communication system, may comprise generating a base sequence; generating a modified sequence by inverting polarity of the base sequence; mapping the base sequence and the modified sequence to a first frequency region having a frequency higher than a center subcarrier and a second frequency region having a frequency lower the center subcarrier, so that the base sequence and the modified sequence are symmetric centering the center subcarrier located at a center frequency of a frequency domain of the synchronization signal; and transmitting the synchronization signal comprising the base sequence and the modified sequence to a terminal. Therefore, performance of the communication system can be improved.
    Type: Application
    Filed: May 27, 2020
    Publication date: December 3, 2020
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Kap Seok CHANG, Young Jo KO, Yong Sun KIM, Sang Ho LEE
  • Publication number: 20200344734
    Abstract: Data transmission and reception is provided by configuring control channels in a wireless communication system using a plurality of carriers. User equipment (UE) may monitor physical downlink control channel (PDCCH) candidates within common search spaces (CSSs) and User Equipment-specific search spaces (USSs). If the UE is configured with cross-carrier scheduling, when two PDCCH candidates originating from a CSS and a USS, respectively, have cyclic redundancy check (CRC) scrambled by the same Radio Network Temporary Identifier (RNTI) and have a common payload size and the same first control channel element (CCE) index, the UE may interpret that only the PDCCH originating from the CSS is transmitted, thereby solving ambiguity of downlink control information (DCI) detection.
    Type: Application
    Filed: July 14, 2020
    Publication date: October 29, 2020
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Young Jo KO, Bang Won SEO, Jae Young AHN
  • Publication number: 20200343957
    Abstract: An operation method of a terminal may comprise receiving, from a base station, information of target transmission points targeted for a report of first channel state information (CSI) among the plurality of transmission points; receiving a first CSI-reference signal (CSI-RS) from the target transmission points; transmitting the first CSI determined based on the first CSI-RS to the base station; receiving, from the base station, information on a first transmission point determined based on the first CSI; receiving, from the first transmission point indicated by the information on the first transmission point, a second CSI-RS; receiving, from the base station, information on a requirement; and transmitting, to the base station, a second CSI including a transmission parameter for achieving the requirement.
    Type: Application
    Filed: April 24, 2020
    Publication date: October 29, 2020
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Young Jo KO, Seok Ki KIM, Seung Kwon BAEK, Woo Ram SHIN, Chan Ho YOON
  • Patent number: 10756855
    Abstract: An apparatus for receiving a signal through an unlicensed band includes: a processor, a memory, and a radio frequency unit, wherein the processor executes a program stored in the memory to perform: receiving a secondary synchronization signal (SSS) in at least one remaining subframe except a subframe 0 or a subframe 5 of a plurality of subframes included in a discovery signal measurement timing configuration (DMTC), and detecting the SSS by using a subframe number of the subframe 0 or the subframe 5.
    Type: Grant
    Filed: May 7, 2019
    Date of Patent: August 25, 2020
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Eunkyung Kim, Young Jo Ko, Sung-Hyun Moon, Seung-Kwon Baek, Wooram Shin, Chanho Yoon
  • Patent number: 10757694
    Abstract: Data transmission and reception is provided by configuring control channels in a wireless communication system using a plurality of carriers. User equipment (UE) may monitor physical downlink control channel (PDCCH) candidates within common search spaces (CSSs) and User Equipment-specific search spaces (USSs). If the UE is configured with cross-carrier scheduling, when two PDCCH candidates originating from a CSS and a USS, respectively, have cyclic redundancy check (CRC) scrambled by the same Radio Network Temporary Identifier (RNTI) and have a common payload size and the same first control channel element (CCE) index, the UE may interpret that only the PDCCH originating from the CSS is transmitted, thereby solving ambiguity of downlink control information (DCI) detection.
    Type: Grant
    Filed: August 24, 2018
    Date of Patent: August 25, 2020
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Young Jo Ko, Bang Won Seo, Jae Young Ahn