Patents by Inventor Jae-Young Ahn

Jae-Young Ahn 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: 11125886
    Abstract: The present invention provides a method of performing a position measurement on the basis of a signal from a global navigation satellite system (GNSS). The method includes: receiving initial position information; estimating an initial value of a multipath error through a measurement of the GNSS signal on the basis of the received initial position information; estimating a multipath error from the initial value of the multipath error on the basis of a change in the measurement; removing the estimated multipath error from the measurement of the GNSS signal; and performing the position measurement on the basis of the GNSS measurement from which the multipath error is removed.
    Type: Grant
    Filed: December 9, 2019
    Date of Patent: September 21, 2021
    Assignees: Electronics and Telecommunications Research Institute, INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY
    Inventors: Yoo La Hwang, Jae Young Ahn, Byoung Sun Lee, Ji Hun Cha, Byung Woon Park, Yong Jun Lee, Cheol Soon Lim
  • Publication number: 20210287595
    Abstract: A display apparatus includes a display panel, a driving controller and a data driver. The driving controller processes input image data according to a variable input frequency and generates a data signal having a varied frame length. The data driver converts the data signal into a data voltage and outputs the data voltage to the display panel. The driving controller determines a variable frequency mode and generates an asymmetric data signal including a positive data signal and a negative data signal which are asymmetric with respect to a common voltage for a same grayscale value in the variable frequency mode.
    Type: Application
    Filed: March 11, 2021
    Publication date: September 16, 2021
    Inventors: Tae Hyeong AN, Hoi Sik MOON, Yoon Gu KIM, Jin Pil KIM, Jae Sung BAE, Nam Jae LIM, Ik Hyun AHN, Seung Young CHOI
  • Publication number: 20210282129
    Abstract: A dynamic channel assignment method includes receiving, at a ground control station (GCS), assignment of a first communication channel set from a spectrum authority before takeoff of the unmanned aircraft; receiving, at the GCS, assignment of a second communication channel set when the unmanned aircraft is to move from a first area using the first communication channel set to a second area using the second communication channel set due to a flight plan of the unmanned aircraft after takeoff of the unmanned aircraft; and after the unmanned aircraft enters the second area, maintaining, at the GCS, the first communication channel set when the unmanned aircraft reenters the first area due to the flight plan, and returning, at the GCS, the first communication channel set to the spectrum authority when the unmanned aircraft does not reenter the first area due to the flight plan.
    Type: Application
    Filed: May 20, 2021
    Publication date: September 9, 2021
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Hee Wook KIM, Jae Young AHN
  • Patent number: 11076394
    Abstract: The MAC frame in a wireless communication system includes a terminal ID allocated to each of multiple terminals. At least one connection ID is allocated to each terminal having the terminal ID, and sub-carrier allocation information is allocated to each connection having the connection ID. The sub-carrier allocation information includes a sub-carrier allocation status for each sub-carrier, and the number of allocated information bits for each sub-carrier. The sub-carrier allocation status and the number of allocated information bits for each sub-carrier can be allocated, by sub-carriers, to the sub-carrier allocation information using a same number of bits; or the information on the sub-carrier allocation status is first allocated to the sub-carrier allocation information and the number of allocated information bits for each sub-carrier is allocated.
    Type: Grant
    Filed: January 2, 2019
    Date of Patent: July 27, 2021
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Hyoung-Soo Lim, Woo-Yong Choi, Yong-Sun Kim, Jae-Young Ahn
  • Publication number: 20210226753
    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: Application
    Filed: April 8, 2021
    Publication date: July 22, 2021
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Hee Soo LEE, Tae Gyun NOH, Jae Young AHN, Kyoung Seok LEE, Young Jo KO
  • Patent number: 11039431
    Abstract: The method for transmitting control information in a mobile communication system includes: determining a control channel resource for transmitting control information by means of the data channel region; and transmitting the control information using the determined control channel resource. A capacity for control information, which increases for multiple user multiple-input multiple-out (MIMOs) in a heterogeneous network environment, for heterogeneous network interference control using carrier aggregation, for frequent use of a multicast-broadcast single frequency network (MBSFN) subframe, and for a CoMP transmission control, may be satisfied. Further, an adaptive resource allocation based on a requested capacity for control information may be enabled, and the efficient utilization of resources may also be enabled.
    Type: Grant
    Filed: October 22, 2019
    Date of Patent: June 15, 2021
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Bang-Won Seo, Young-Jo Ko, Tae-Gyun Noh, Jae-Young Ahn
  • Patent number: 11026214
    Abstract: Provided is a method of transmitting and receiving data using a persistent allocation scheme in order to effectively support a voice service between a base station and a mobile terminal in a packet based mobile communication system. When an error occurs in transmitting control information that indicates whether to use a radio resource using the persistent allocation scheme, the base station may retransmit the control information and thereby maintain a communication quality.
    Type: Grant
    Filed: June 22, 2018
    Date of Patent: June 1, 2021
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Kyoung Seok Lee, Jae Heung Kim, Soo Jung Jung, Jae Young Ahn
  • 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
  • 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: 10951279
    Abstract: The present invention relates to a multi-input and multi-output communication method in a large-scale antenna system. An MIMO transmission method according to the present invention includes: obtaining statistical channel information on at least one terminal, dividing terminals into a plurality of classes and a plurality of groups based on the statistical channel information, wherein the groups depend on the classes; determining a group beam-forming matrix for each of the divided groups; performing a group beamforming transmission by group based on the group beam-forming matrix to obtain instantaneous channel information; and scheduling terminals based on the instantaneous channel information. Thus, it is possible to decrease the complexity in a scheduling and precoding calculation without an increase in the amount of wireless resources that are required for providing feedback for a reference signal and channel status information.
    Type: Grant
    Filed: July 11, 2019
    Date of Patent: March 16, 2021
    Assignee: Electronics and Telecommunications Research institute
    Inventors: Jun Young Nam, Jae Young Ahn
  • 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
  • Patent number: 10869306
    Abstract: Provided is a communication system that transmits a control channel using a downlink. The communication system may transmit, to the terminal, transmission information of uplink allocation information that indicates whether uplink allocation information is transmitted using a downlink, and the terminal may determine whether the uplink allocation information is included in a downlink frame, based on the transmission information of uplink allocation information. The base station may transmit, to the terminal, information associated with a resource which has a possibility of being used for transmission of a physical downlink control channel (PDCCH), and the terminal may decode the PDCCH in the resource which has a possibility of being used for transmission of the PDCCH.
    Type: Grant
    Filed: January 9, 2019
    Date of Patent: December 15, 2020
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Tae Gyun Noh, Jae Young Ahn
  • Publication number: 20200344098
    Abstract: A technology enabling a terminal to receive acknowledgement (ACK)/negative ACK (NACK) information about data transmitted from the terminal is provided. The method includes receiving cyclic shift information for a reference signal from the base station; transmitting, to the base station, the data and a reference signal which is cyclic-shifted using a cyclic shift value, the cyclic shift value being determined based on a dynamic cyclic shift value mapped one-to-one to the cyclic shift information for the reference signal; and receiving, from the base station, the ACK/NACK information about the transmitted data through a radio resource of a downlink channel, the radio resource of the downlink channel being identified based on a modifier mapped one-to-one to the cyclic shift information for the reference signal.
    Type: Application
    Filed: July 13, 2020
    Publication date: October 29, 2020
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Taegyun NOH, Jae Young AHN
  • 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: 20200329458
    Abstract: Provided is a method of transmitting and receiving data using a persistent allocation scheme in order to effectively support a voice service between a base station and a mobile terminal in a packet based mobile communication system. When an error occurs in transmitting control information that indicates whether to use a radio resource using the persistent allocation scheme, the base station may retransmit the control information and thereby maintain a communication quality.
    Type: Application
    Filed: June 22, 2018
    Publication date: October 15, 2020
    Inventors: Kyoung Seok LEE, Jae Heung KIM, Soo Jung JUNG, Jae Young AHN
  • Publication number: 20200271792
    Abstract: The present invention provides a method of performing a position measurement on the basis of a signal from a global navigation satellite system (GNSS). The method includes: receiving initial position information; estimating an initial value of a multipath error through a measurement of the GNSS signal on the basis of the received initial position information; estimating a multipath error from the initial value of the multipath error on the basis of a change in the measurement; removing the estimated multipath error from the measurement of the GNSS signal; and performing the position measurement on the basis of the GNSS measurement from which the multipath error is removed.
    Type: Application
    Filed: December 9, 2019
    Publication date: August 27, 2020
    Applicants: Electronics and Telecommunications Research Institute, INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY
    Inventors: Yoo La HWANG, Jae Young AHN, Byoung Sun LEE, Ji Hun CHA, Byung Woon PARK, Yong Jun LEE, Cheol Soon LIM
  • Patent number: 10756185
    Abstract: A semiconductor device includes a substrate, a plurality of gate electrodes extending in a first direction parallel to an upper surface of a substrate on the substrate, and alternately arranged with an interlayer insulating layer in a second direction perpendicular to the upper surface of the substrate, a vertical channel layer on a sidewall of a vertical channel hole extending in the second direction by penetrating through the plurality of gate electrodes and the interlayer insulating layer, and connected to the upper surface of the substrate, and a first gap-fill insulating layer formed in the vertical channel hole and including an outer wall contacting the vertical channel layer and an inner wall opposite the outer wall, wherein a part of the inner wall forms a striation extending in the second direction.
    Type: Grant
    Filed: July 11, 2017
    Date of Patent: August 25, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ji-hoon Choi, Hong-suk Kim, Sung-gil Kim, Phil-ouk Nam, Seul-ye Kim, Han-jin Lim, Jae-young Ahn
  • 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
  • Patent number: RE48717
    Abstract: A type 1 system and a type 2 system are classified according to whether carrier aggregation is used. A shared component carrier is used for both a type 1 terminal and a type 2 terminal, whereas a dedicated component carrier is used only for the type 2 terminal. Also, a type 2 base station transmits broadcast information by using a shared component carrier. In this instance, the broadcast information includes the shared broadcast information used for both the type 1 terminal and the type 2 terminal and the dedicated broadcast information only for the type 2 terminal. Also, the type 2 base station indicates component carriers that are used by the type 2 terminal, by using a semi-static component carrier indicator or a dynamic component carrier indicator.
    Type: Grant
    Filed: July 16, 2015
    Date of Patent: August 31, 2021
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Tae Gyun Noh, Kyoung-Seok Lee, Jae Young Ahn