Patents by Inventor In Cheol Chang

In Cheol Chang 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: 20250024516
    Abstract: An operation method of a base station in a communication system may comprise: generating first RACH configuration information for a normal terminal; generating second RACH configuration information for a RedCap terminal; transmitting a message including the first RACH configuration information and the second RACH configuration information; and performing a random access procedure with a first terminal based on the message, wherein a terminal type of the first terminal is identified based on the first RACH configuration information and the second RACH configuration information, and the terminal type is the normal terminal or the RedCap terminal.
    Type: Application
    Filed: September 27, 2024
    Publication date: January 16, 2025
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Jung Hoon LEE, Jae Heung KIM, Sung Cheol CHANG
  • Publication number: 20240430930
    Abstract: An operation method of a terminal in a communication system may comprise receiving first random access (RA) configuration information and second RA configuration information from a base station; transmitting a Msg1 to the base station based on the second RA configuration information; receiving a Msg2, which is a response to the Msg1, from the base station; and repeatedly transmitting a Msg3 K times to the base station.
    Type: Application
    Filed: September 6, 2024
    Publication date: December 26, 2024
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Cheul Soon KIM, Jae Heung KIM, Sung Hyun MOON, Jung Hoon LEE, Sung Cheol CHANG
  • Publication number: 20240414515
    Abstract: An operation method of a relay terminal for relaying radio communication between a base station and a remote terminal may comprise: recognizing a relay request of the remote terminal for system information provided by the base station; acquiring the system information from the base station; and transmitting the system information to the remote terminal.
    Type: Application
    Filed: August 19, 2024
    Publication date: December 12, 2024
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Sung Cheol CHANG, Jae Heung KIM
  • Patent number: 12137479
    Abstract: An operation method of a base station in a communication system may comprise: generating first RACH configuration information for a normal terminal; generating second RACH configuration information for a RedCap terminal; transmitting a message including the first RACH configuration information and the second RACH configuration information; and performing a random access procedure with a first terminal based on the message, wherein a terminal type of the first terminal is identified based on the first RACH configuration information and the second RACH configuration information, and the terminal type is the normal terminal or the RedCap terminal.
    Type: Grant
    Filed: November 30, 2021
    Date of Patent: November 5, 2024
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jung Hoon Lee, Jae Heung Kim, Sung Cheol Chang
  • Patent number: 12114351
    Abstract: An operation method of a terminal in a communication system may comprise receiving first random access (RA) configuration information and second RA configuration information from a base station; transmitting a Msg1 to the base station based on the second RA configuration information; receiving a Msg2, which is a response to the Msg1, from the base station; and repeatedly transmitting a Msg3 K times to the base station.
    Type: Grant
    Filed: January 25, 2023
    Date of Patent: October 8, 2024
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Cheul Soon Kim, Jae Heung Kim, Sung Hyun Moon, Jung Hoon Lee, Sung Cheol Chang
  • Publication number: 20240314612
    Abstract: A method of a terminal may comprise: receiving, from a serving cell, a first message including measurement report configuration information; in response to transmission of a measurement report message being triggered based on the first message, generating a measurement report message; and in response to a measurement report message transmission condition configured by the first message being satisfied, transmitting the measurement report message to the serving cell.
    Type: Application
    Filed: March 7, 2024
    Publication date: September 19, 2024
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Hyun Seo PARK, Yong Jin KWON, Yun Joo KIM, Han Jun PARK, Jung Bo SON, An Seok LEE, Yu Ro LEE, Sung Cheol CHANG, Heesoo LEE
  • Patent number: 12096512
    Abstract: An operation method of a relay terminal for relaying radio communication between a base station and a remote terminal may comprise: recognizing a relay request of the remote terminal for system information provided by the base station; acquiring the system information from the base station; and transmitting the system information to the remote terminal.
    Type: Grant
    Filed: February 15, 2022
    Date of Patent: September 17, 2024
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Sung Cheol Chang, Jae Heung Kim
  • Publication number: 20240268928
    Abstract: A system for manufacturing a three-dimensional dental laminate according to the present invention includes at least one processor and a memory. The memory stores instructions causing the at least one processor to perform, in response to execution of the instructions, receiving images including a user's teeth, estimating poses of a camera by analyzing the received images, computing sparse 3D points by tracking feature points in the received images and triangulating a three-dimensional position of the feature points based on relative movements among the estimated poses of the camera, generating a three-dimensional tooth modeling file based on the sparse 3D points and adjusting for the size of an actual tooth, generating a three-dimensional dental laminate modeling file based on the adjusted three-dimensional tooth modeling file, and manufacturing a three-dimensional dental laminate based on the generated three-dimensional dental laminate modeling file.
    Type: Application
    Filed: February 14, 2023
    Publication date: August 15, 2024
    Applicant: e32 Technology Inc.
    Inventors: Young Cheol CHANG, Yong Min PARK, Junhyuk YOON
  • Patent number: 12063591
    Abstract: A relaying method, performed by a relay terminal using sidelink in a communication system, may comprise: receiving a plurality of data units from a plurality of remote terminals; generating a multiplexed data unit including identification information of the plurality of remote terminals and the plurality of data units; and transmitting the multiplexed data unit to a base station, wherein the identification information includes a terminal identifier used to identify each of the plurality of remote terminals.
    Type: Grant
    Filed: August 4, 2021
    Date of Patent: August 13, 2024
    Assignee: Electronics and Telecommunications Research Institute
    Inventor: Sung Cheol Chang
  • Publication number: 20240252279
    Abstract: Provided is a dental laminate including a first structure having a curvature corresponding to at least a part of a first tooth and a shape corresponding to a front surface of the first tooth to cover the front surface of the first tooth, a second structure adjoining the first structure and having a curvature corresponding to at least a part of a second tooth adjoining the first tooth and a shape corresponding to a front surface of the second tooth to cover the front surface of the second tooth, and a bridge structure connecting the first structure to the second structure, wherein at least a part of the bridge structure is located between the first tooth and the second tooth.
    Type: Application
    Filed: January 27, 2023
    Publication date: August 1, 2024
    Applicant: e32 Technology Inc.
    Inventors: Yong Min PARK, Young Cheol CHANG
  • Publication number: 20240251257
    Abstract: Disclosed are a method and an apparatus for improving mobility management performance by reducing unnecessary handovers in a communication system. a method of a terminal may comprise: receiving cell prediction configuration information; generating measurement results by performing measurements on a serving cell and neighbor cell(s) based on signal strength measurement configuration information; and generating a result of predicting a best cell by performing best cell prediction based on the measurement results.
    Type: Application
    Filed: December 15, 2023
    Publication date: July 25, 2024
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Hyun Seo PARK, Yong Jin KWON, Yun Joo KIM, Han Jun PARK, Jung Bo SON, An Seok LEE, Yu Ro LEE, Sung Cheol CHANG, Heesoo LEE
  • Publication number: 20240236779
    Abstract: Disclosed is a technique for switching from a master node to a secondary node in a communication system. A method of a first communication node may comprise: adding the first communication node as a primary secondary cell (PSCell) to a second communication node through dual connectivity (DC); generating a first user plane path for smart dynamic switching (SDS) and a first instance for supporting the first user plane path according to a request from the second communication node; transmitting information on the first user plane path and the first instance to a terminal; receiving user data based on the first user plane path from the terminal as the first instance; and transmitting the user data to a core network using the first user plane path.
    Type: Application
    Filed: October 23, 2023
    Publication date: July 11, 2024
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Soon Gi PARK, Young-Jo KO, IL GYU KIM, Jung Im KIM, Jun Sik KIM, Sung Cheol CHANG, Sun Mi JUN, Yong Seouk CHOI
  • Publication number: 20240206000
    Abstract: A method and a device for coherent communication are disclosed. An operating method of a terminal comprises the steps of: receiving, from a first TRP, an RRC message including information indicating the performance of reception operations for the first TRP and a second TRP; performing the reception operations for the first TRP and the second TRP to receive a common DL-RS; and allowing communication with the first TRP and/or the second TRP on the basis of the common DL-RS, wherein the common DL-RS is co-transmitted in the first TRP and the second TRP.
    Type: Application
    Filed: April 13, 2022
    Publication date: June 20, 2024
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Cheul Soon KIM, Jae Heung KIM, Sung Hyun MOON, Jung Hoon LEE, Sung Cheol CHANG, Young Jo KO
  • Publication number: 20240196287
    Abstract: Disclosed are radio bearer management method and apparatus for multi-radio multi-connectivity. A method of a terminal may comprise: transmitting UP data to at least one node among an MN or SN through a first DRB; and in response to identifying a UL coverage loss in the second SN, determining switching from the first DRB to a second DRB based on a bearer switching rule.
    Type: Application
    Filed: December 13, 2023
    Publication date: June 13, 2024
    Inventors: Sun Mi JUN, II Gyu KIM, Jung Im KIM, Jun Sik KIM, SoonGi PARK, Sung Cheol CHANG, Hee Sang CHUNG, Yong Seouk CHOI
  • Publication number: 20240196291
    Abstract: A handover method of a terminal may comprise: performing a procedure to search for neighbor TRPs including a target TRP; transmitting a neighbor TRP information report message including information on searched neighbor TRPs to a current serving TRP; receiving, from a DU to which the terminal is connected and through the current serving TRP, a command indicating TRP switching for switching a serving TRP of the terminal from the current serving TRP to the target TRP; and performing an access procedure to the target TRP according to the command indicating the TRP switching, wherein the TRP switching is determined based on the neighbor TRP information report message.
    Type: Application
    Filed: December 12, 2023
    Publication date: June 13, 2024
    Inventor: Sung Cheol CHANG
  • Publication number: 20240188062
    Abstract: A method of user equipment may comprise: determining whether an error condition for a first beam communicating with a base station is met; when it is determined that the error condition for the first beam is met, determining whether a first physical uplink control channel (PUCCH) allocated to the user equipment is present within a predetermined first period of time; when it is determined that the first PUCCH is not present, transmitting a sounding reference signal (SRS) transmission approval request and an identifier of the user equipment to the base station through a second PUCCH pre-configured to be shared by all pieces of user equipment; and when an SRS transmission approval is received from the base station, transmitting an SRS to the base station.
    Type: Application
    Filed: November 30, 2023
    Publication date: June 6, 2024
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Jung Im KIM, Young Jo KO, II Gyu KIM, Sung Cheol CHANG, Hee Sang CHUNG, Yong Seouk CHOI
  • Publication number: 20240187889
    Abstract: A method of a base station may comprise: detecting a beam failure for a terminal; in response to detecting the beam failure, transmitting a beam recovery early indicator (BREI) to the terminal based on a beam sweeping scheme; receiving a BREI response from the terminal; and identifying a preferred beam of the terminal based on reception of the BREI response.
    Type: Application
    Filed: November 30, 2023
    Publication date: June 6, 2024
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Jung Im KIM, Young Jo KO, Jun Sik KIM, Soon Gi PARK, Sung Cheol CHANG, Sun Mi JUN, Hee Sang CHUNG, Yong Seouk CHOI
  • Publication number: 20240171245
    Abstract: Disclosed is a wireless communication system, specifically, an apparatus and method for configuring a primary cell carrier/secondary cell carrier (PCC/SCC) prioritization only based on extremely partial channel state information in a wireless communication system. Specifically, a method of operating a user equipment (UE) in a wireless communication system includes: transmitting a sounding reference signal (SRS) or channel state information (CSI) to a base station; receiving a signal from the base station on the basis of the SRS or the CSI; and estimating a number of multi-paths using a neural network for the received signal, wherein the estimating of the number of multi-paths includes: re-shaping the received signal; extracting a singular value of the reshaped signal; and estimating the number of multi-paths based on the extracted singular value.
    Type: Application
    Filed: November 16, 2023
    Publication date: May 23, 2024
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Jun Sik KIM, Woong Hee LEE, Minhoe KIM, Taewon SONG, Jung Im KIM, Soon Gi PARK, Sung Cheol CHANG, Sun Mi JUN, Yong Seouk CHOI
  • Publication number: 20240147315
    Abstract: A method of a terminal may comprise: receiving, from a CU of a base station, configuration information of one or more candidate cells and configuration information for measurement; performing L1 measurement on the candidate cells based on the configuration information for measurement; acquiring uplink synchronization for the candidate cells by performing an uplink synchronization management procedure for the candidate cells based on the configuration information of the candidate cells; reporting a result of the L1 measurement to a DU of the base station; receiving, from the DU of the base station, information on a target cell, being the target cell to switch among the candidate cells, based on the result of the L1 measurement; and applying the uplink synchronization acquired through the uplink synchronization management procedure to the target cell.
    Type: Application
    Filed: November 2, 2023
    Publication date: May 2, 2024
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Hyun Seo PARK, Yong Jin KWON, Yun Joo KIM, Han Jun PARK, Jung Bo SON, An Seok LEE, Yu Ro LEE, Sun Cheol CHANG, Heesoo LEE
  • Publication number: 20240137821
    Abstract: Disclosed is a technique for switching from a master node to a secondary node in a communication system. A method of a first communication node may comprise: adding the first communication node as a primary secondary cell (PSCell) to a second communication node through dual connectivity (DC); generating a first user plane path for smart dynamic switching (SDS) and a first instance for supporting the first user plane path according to a request from the second communication node; transmitting information on the first user plane path and the first instance to a terminal; receiving user data based on the first user plane path from the terminal as the first instance; and transmitting the user data to a core network using the first user plane path.
    Type: Application
    Filed: October 22, 2023
    Publication date: April 25, 2024
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Soon Gi PARK, Young-Jo KO, IL GYU KIM, Jung Im KIM, Jun Sik KIM, Sung Cheol CHANG, Sun Mi JUN, Yong Seouk CHOI