Patents by Inventor Jae-Hyun Ahn

Jae-Hyun 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).

  • Handover apparatus and method for avoiding in-device coexistence interference
    Patent number: 9986481
    Abstract: The present disclosure relates to a handover apparatus and method capable of avoiding in-device coexistence interference. In order to prevent handover failure due to in-device coexistence interference, an SeNB provides TDM information (including TDM pattern information or TDM activation information) to a UE during a handover procedure, and the UE performs the handover with a TeNB according to the provided TDM information. By the disclosure, the UE can perform ISM signal transmission/reception and LTE signal transmission/reception with the TeNB in a discriminated manner according to a particular TDM pattern, so as to prevent handover failure due to the in-UE coexistence interference.
    Type: Grant
    Filed: December 23, 2016
    Date of Patent: May 29, 2018
    Assignee: Apple, Inc.
    Inventors: Jae Hyun Ahn, Kibum Kwon, Myungcheul Jung
  • SUPPORT OF FREQUENCY DIVERSITY MODE FOR BLOCK CODE BASED TRANSMISSION IN OFDMA
    Publication number: 20180123844
    Abstract: Transmitting a frame may include determining a numerology according to a channel bandwidth, indicating the numerology in a field of a frame, and transmitting the frame using the numerology. Receiving a frame may include receiving a preamble of a frame, determining a numerology using the preamble, and receiving later portions of the frame using the numerology. Transmitting a frame may include, for a transmission time slot, determining a value of a first subcarrier of a first Space-Time Stream (STS), determining a value of a second subcarrier of the first STS, and determining, according to complex conjugates or negative complex conjugates of the values of the first and second subcarriers of the first STS, respective values of second and first sub carriers of a second STS. Transmitting a constellation point of a frame may be performed using an orphan subcarrier pair.
    Type: Application
    Filed: December 29, 2017
    Publication date: May 3, 2018
    Inventors: Yujin NOH, Dae Won LEE, Sungho MOON, Jae Hyun AHN, Hee Jung YU, Minho CHEONG
  • Method and apparatus for transmitting power headroom report by terminal in wireless communication system
    Patent number: 9961648
    Abstract: Disclosed are a method and an apparatus for transmitting a power headroom report (PHR) by a terminal which is set to be dually connected to at least two heterogeneous base stations through uplink wireless connection. A method for transmitting a power headroom report (PHR) by a user equipment performing wireless communication based on dual connectivity. The method may include triggering the PHR based on at least one of a path loss change and a periodic timer; and transmitting at least one PHR to at least one base station according to the dual connectivity.
    Type: Grant
    Filed: March 26, 2014
    Date of Patent: May 1, 2018
    Assignee: Pantech Inc.
    Inventors: Ki Bum Kwon, Jae Hyun Ahn, Kang Suk Huh
  • Apparatus and method for performing measurement report considering in-device coexistence interference
    Patent number: 9955376
    Abstract: The present invention relates to an apparatus and a method for performing measurement reporting considering in-device coexistence interference. The present invention provide a user equipment transmitting a measurement report in a wireless communication system, comprising an interference detection unit, an assistant information generation unit, a measurement controller and a transmitter. According to the present invention, a measurement procedure can be clearly defined in an interference delicate band where in-device coexistence interference occurs and scheduling restrictions on an eNodeB due to measurement reporting about an interference delicate band can be reduced.
    Type: Grant
    Filed: November 2, 2016
    Date of Patent: April 24, 2018
    Assignee: GOLDPEAK INNOVATIONS INC
    Inventors: Jae Hyun Ahn, Ki Bum Kwon, Myung Cheul Jung
  • Apparatus and method for controlling coexistence interference within device in wireless communication system
    Patent number: 9955495
    Abstract: The present invention provides an apparatus and a method for controlling coexistence interference within a device in a wireless communication system. The method discloses the following steps: performing triggering, in which a transmission, which is generated in a terminal, in a first frequency band of a first network system requests controlling of interference on a reception, which is generated in the terminal, in a second frequency band of a second network system; transmitting to a base station support information including information on a time section that can or cannot be used by the first network system of the second network system, due to the interference; and receiving from the base station reply information for accepting or denying interference control as a reply to the support information.
    Type: Grant
    Filed: July 1, 2016
    Date of Patent: April 24, 2018
    Assignee: GOLDPEAK INNOVATIONS INC
    Inventors: Jae Hyun Ahn, Ki Bum Kwon, Myung Cheul Jung
  • Method and apparatus for sequential forwarding considering multi-flow in dual connectivity system
    Patent number: 9930720
    Abstract: The present invention provides a method for user equipment receiving multi-flow data with respect to one evolved packet system (EPS) bearer through a macro base station (macro eNB) and a small base station (small eNB) in a wireless communication system supporting dual connectivity. The method comprises the steps of: a packet data convergence protocol (PDCP) entity of the user equipment receiving PDCP packet data units (PDU) through the macro base station and the small base station from a PDCP entity of the macro base station; obtaining PDCP service data units (SDU) corresponding to PDCP PDUs; and receiving from the macro base station information related to a sequence timer for the PDCP SDUs through a radio resource control (RRC) message, wherein the PDCP SDUs are indicated by a predefined PDCP sequence number (SN).
    Type: Grant
    Filed: May 9, 2014
    Date of Patent: March 27, 2018
    Assignee: Pantech Inc.
    Inventors: Myung Cheul Jung, Kang Suk Huh, Jae Hyun Ahn, Ki Bum Kwon
  • APPARATUS AND METHOD FOR UPLINK SYNCHRONIZING IN MULTIPLE COMPONENT CARRIER SYSTEM
    Publication number: 20180007646
    Abstract: A user equipment (UE) of re-organizing a timing advance group (TAG) is provided. The UE includes: a receiving unit for receiving, from a serving base station, secondary serving cell (SCell) configuration information which includes a first field and a second field, the first field including an ScellIndex of an SCell to indicate a removal of the SCell, the second field including at least one of the ScellIndex to indicate an addition of the SCell and a TAG ID indicating a TAG of the SCell, and a radio resource control (RRC) processing unit for performing the addition of the SCell after performing the removal of the SCell from one or more SCells configured in the UE, and for reorganizing the TAG by including the SCell in the TAG.
    Type: Application
    Filed: September 19, 2017
    Publication date: January 4, 2018
    Inventors: Ki Bum KWON, Jae Hyun Ahn, Kang Suk Huh
  • ORAL COMPOSITION FOR TOOTH WHITENING PRODUCT, AND KIT COMPRISING SAME
    Publication number: 20180000710
    Abstract: The present invention relates to a composition that acts prior to the action of a tooth whitening composition or tooth whitening patch, the composition containing an oral cavity stimulation alleviating component able to reduce stimulation by the tooth whitening composition or patch. The present invention also relates to a tooth whitening kit whereby oral cavity stimulation is alleviated. The composition that acts prior to the action of a tooth whitening composition or patch of the present invention provides an outstanding tooth whitening effect while alleviating pain by mitigating intra-oral stimulation brought about by the rapid action of a tooth whitening component due to a tooth whitening component active agent.
    Type: Application
    Filed: September 13, 2017
    Publication date: January 4, 2018
    Inventors: Jong-Hoon KIM, Jae-Hyun AHN, Ji-Hye KIM, In-Ho LEE
  • Support of frequency diversity mode for block code based transmission in OFDMA
    Patent number: 9860099
    Abstract: Transmitting a frame may include determining a numerology according to a channel bandwidth, indicating the numerology in a field of a frame, and transmitting the frame using the numerology. Receiving a frame may include receiving a preamble of a frame, determining a numerology using the preamble, and receiving later portions of the frame using the numerology. Transmitting a frame may include, for a transmission time slot, determining a value of a first subcarrier of a first Space-Time Stream (STS), determining a value of a second subcarrier of the first STS, and determining, according to complex conjugates or negative complex conjugates of the values of the first and second subcarriers of the first STS, respective values of second and first subcarriers of a second STS. Transmitting a constellation point of a frame may be performed using an orphan subcarrier pair.
    Type: Grant
    Filed: February 18, 2016
    Date of Patent: January 2, 2018
    Assignee: NEWRACOM, INC.
    Inventors: Yujin Noh, Dae Won Lee, Sungho Moon, Jae Hyun Ahn, Hee Jung Yu, Minho Cheong
  • APPARATUS AND METHOD FOR CONTROLLING IN-DEVICE COEXISTENCE INTERFERENCE IN WIRELESS COMMUNICATION SYSTEM
    Publication number: 20170339746
    Abstract: Method and apparatus for controlling in-device coexistence (IDC) interference in a wireless communication system are described in the present invention. The present invention includes transmitting UE capability information whether the UE has a capability to measure IDC, to a base station (BS); receiving measurement configuration information whether the UE is allowed to send IDC indication, from the BS; and transmitting the IDC indication and at least one of measurements which are a measurement in consideration of IDC and a measurement without consideration of IDC to the BS. It is possible to control reducing occurrence of in-device coexistence interference.
    Type: Application
    Filed: August 8, 2017
    Publication date: November 23, 2017
    Inventors: Jae Hyun AHN, Ki Bum KWON, Myung Cheul JUNG
  • APPARATUS AND METHOD FOR CONTROLLING UPLINK TRANSMISSION POWER IN A MULTIPLE ELEMENT CARRIER WAVE SYSTEM
    Publication number: 20170318544
    Abstract: The present invention relates to an apparatus and method for controlling uplink transmission power in a multiple element carrier wave system. The method for controlling uplink transmission power by a terminal in a multiple element carrier wave system includes the steps of: generating an uplink signal to be transmitted in a first serving cell; receiving, from a base station, random access start information for commanding the start of a random access procedure for a second serving cell; calculating the estimated surplus power from first transmission power scheduled for an uplink signal transmission, and second transmission power scheduled for a transmission of a PRACH to which a random access preamble is mapped; and when the estimated surplus power is smaller than a threshold power, adjusting the first transmission power or the second transmission power on the basis of power allocation priority.
    Type: Application
    Filed: July 18, 2017
    Publication date: November 2, 2017
    Inventors: Ki Bum KWON, Myung Cheul JUNG, Jae Hyun AHN
  • Apparatus and method for uplink synchronizing in multiple component carrier system
    Patent number: 9769776
    Abstract: A user equipment (UE) of re-organizing a timing advance group (TAG) is provided. The UE includes: a receiving unit for receiving, from a serving base station, secondary serving cell (SCell) configuration information which includes a first field and a second field, the first field including an ScellIndex of an SCell to indicate a removal of the SCell, the second field including at least one of the ScellIndex to indicate an addition of the SCell and a TAG ID indicating a TAG of the SCell, and a radio resource control (RRC) processing unit for performing the addition of the SCell after performing the removal of the SCell from one or more SCells configured in the UE, and for reorganizing the TAG by including the SCell in the TAG.
    Type: Grant
    Filed: October 31, 2016
    Date of Patent: September 19, 2017
    Assignee: GOLDPEAK INNOVATIONS INC
    Inventors: Ki Bum Kwon, Jae Hyun Ahn, Kang Suk Huh
  • Method and apparatus for wireless link control in wireless communication system supporting dual connectivity
    Patent number: 9763283
    Abstract: A method and an apparatus for wireless link (radio link) control in a wireless communication system supporting dual connectivity is disclosed. The present invention includes: detecting radio link failure (RLF) of a secondary serving cell provided from a secondary base station, separately from detecting RLF of a primary serving cell provided from a master base station; generating a RLF specifier specifying an occurrence of RLF of the secondary serving cell when RLF of the secondary serving cell is detected; and transmitting the RLF specifier to an RRC connected master base station. A wireless link between a terminal and a master base station and a wireless link between a terminal and a secondary base station can be managed individually when a terminal is dually connected to both the master base station and the secondary base station in a network.
    Type: Grant
    Filed: April 4, 2014
    Date of Patent: September 12, 2017
    Assignee: Pantech Inc.
    Inventors: Myung Cheul Jung, Ki Bum Kwon, Jae Hyun Ahn, Kang Suk Huh
  • Apparatus and method for transmitting control information in wireless communication system
    Patent number: 9756642
    Abstract: Disclosed is a method and a apparatus for transmitting control information in a wireless communication system. The present invention includes detecting In Device Coexistence (IDC) interference, and transmitting an IDC indication message to an eNB if there is at least one frequency influenced by the IDC interference, wherein the IDC indication message is configured to include a frequency list containing frequencies influenced by the IDC interference, and the frequency list is configured to include an IDC interference direction indicating a direction of an influence of the detected IDC interference.
    Type: Grant
    Filed: July 13, 2016
    Date of Patent: September 5, 2017
    Assignee: Pantech Inc.
    Inventors: Jae Hyun Ahn, Ki Bum Kwon, Kang Suk Huh
  • APPARATUS AND METHOD FOR PERFORMING UPLINK SYNCHRONIZATION IN WIRELESS COMMUNICATION SYSTEM
    Publication number: 20170245232
    Abstract: This specification relates to an apparatus and method for performing random access in a wireless communication system. This specification discloses a mobile station, including a reception unit for receiving TAG configuration information on which at least one serving cell configured in the mobile station is classified as a Timing Alignment Group (TAG) from a base station and a transmission unit for transmitting a random access preamble to the base station on one representative serving cell within the TAG. In accordance with this specification, a procedure of obtaining a TAV for a serving cell in order to secure and maintain uplink timing synchronization becomes clear, the time taken to obtain uplink synchronization for a serving cell may be reduced, and overhead due to excessive random access attempts may be reduced by obtaining a TAV for a plurality of serving cells through one random access procedure.
    Type: Application
    Filed: May 11, 2017
    Publication date: August 24, 2017
    Inventors: Ki Bum KWON, Myung Cheul JUNG, Jae Hyun AHN
  • Apparatus and method for controlling in-device coexistence interference in wireless communication system
    Patent number: 9730265
    Abstract: Method and apparatus for controlling in-device coexistence (IDC) interference in a wireless communication system are described in the present invention. The present invention includes transmitting UE capability information whether the UE has a capability to measure IDC, to a base station (BS); receiving measurement configuration information whether the UE is allowed to send IDC indication, from the BS; and transmitting the IDC indication and at least one of measurements which are a measurement in consideration of IDC and a measurement without consideration of IDC to the BS. It is possible to control reducing occurrence of in-device coexistence interference.
    Type: Grant
    Filed: June 15, 2016
    Date of Patent: August 8, 2017
    Assignee: GOLDPEAK INNOVATIONS INC
    Inventors: Jae Hyun Ahn, Ki Bum Kwon, Myung Cheul Jung
  • PRINTED CIRCUIT BOARD
    Publication number: 20170208692
    Abstract: A printed circuit board includes an insulating layer and an element embedded in the insulating layer and exposed through a surface of the insulating layer.
    Type: Application
    Filed: July 24, 2015
    Publication date: July 20, 2017
    Applicant: LG INNOTEK CO., LTD
    Inventors: Jae Hyun AHN, Min Wook YU
  • Apparatus and method for controlling uplink transmission power in a multiple element carrier wave system
    Patent number: 9713095
    Abstract: The present invention relates to an apparatus and method for controlling uplink transmission power in a multiple element carrier wave system. The method for controlling uplink transmission power by a terminal in a multiple element carrier wave system includes the steps of: generating an uplink signal to be transmitted in a first serving cell; receiving, from a base station, random access start information for commanding the start of a random access procedure for a second serving cell; calculating the estimated surplus power from first transmission power scheduled for an uplink signal transmission, and second transmission power scheduled for a transmission of a PRACH to which a random access preamble is mapped; and when the estimated surplus power is smaller than a threshold power, adjusting the first transmission power or the second transmission power on the basis of power allocation priority.
    Type: Grant
    Filed: March 22, 2016
    Date of Patent: July 18, 2017
    Assignee: GOLDPEAK INNOVATIONS INC
    Inventors: Ki Bum Kwon, Jae Hyun Ahn, Myung Cheul Jung
  • Apparatus and method for performing uplink synchronization in wireless communication system
    Patent number: 9655071
    Abstract: This specification relates to an apparatus and method for performing random access in a wireless communication system. This specification discloses a mobile station, including a reception unit for receiving TAG configuration information on which at least one serving cell configured in the mobile station is classified as a Timing Alignment Group (TAG) from a base station and a transmission unit for transmitting a random access preamble to the base station on one representative serving cell within the TAG. In accordance with this specification, a procedure of obtaining a TAV for a serving cell in order to secure and maintain uplink timing synchronization becomes clear, the time taken to obtain uplink synchronization for a serving cell may be reduced, and overhead due to excessive random access attempts may be reduced by obtaining a TAV for a plurality of serving cells through one random access procedure.
    Type: Grant
    Filed: September 23, 2014
    Date of Patent: May 16, 2017
    Assignee: GOLDPEAK INNOVATIONS INC
    Inventors: Ki Bum Kwon, Myung Cheul Jung, Jae Hyun Ahn
  • HANDOVER APPARATUS AND METHOD FOR AVOIDING IN-DEVICE COEXISTENCE INTERFERENCE
    Publication number: 20170111837
    Abstract: The present disclosure relates to a handover apparatus and method capable of avoiding in-device coexistence interference. In order to prevent handover failure due to in-device coexistence interference, an SeNB provides TDM information (including TDM pattern information or TDM activation information) to a UE during a handover procedure, and the UE performs the handover with a TeNB according to the provided TDM information. By the disclosure, the UE can perform ISM signal transmission/reception and LTE signal transmission/reception with the TeNB in a discriminated manner according to a particular TDM pattern, so as to prevent handover failure due to the in-UE coexistence interference.
    Type: Application
    Filed: December 23, 2016
    Publication date: April 20, 2017
    Inventors: Jae Hyun AHN, Kibum KWON, Myungcheul JUNG