Patents by Inventor Jin Young Chun

Jin Young Chun 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).

  • METHOD AND APPARATUS FOR MEASURING INTERFERENCE IN A WIRELESS COMMUNICATION SYSTEM
    Publication number: 20150237523
    Abstract: Provided are a method and apparatus for measuring interference in a wireless communication system. A terminal receives, from a base station, a zero-power channel state information (CSI) reference signal (RS) indicator that indicates whether or not to estimate interference using a zero-power CSI RS signal, and, according to the zero-power CSI RS indicator, measures interference on the basis of the zero-power CSI RS.
    Type: Application
    Filed: May 4, 2015
    Publication date: August 20, 2015
    Applicant: LG ELECTRONICS INC.
    Inventors: Jin Young CHUN, Ki Tae KIM, Su Nam KIM, Ji Won KANG, Bin Chul IHM, Sung Ho PARK
  • Method for transmitting signal in multi-node system
    Patent number: 9107199
    Abstract: Provided is a method of transmitting a signal of a multi-node system employing a plurality of nodes and a plurality of base stations that can be controlled by being connected with the plurality of nodes. The method includes: mapping at least one base station among the plurality of base stations to at least one node among the plurality of nodes; and transmitting by the at least one base station a signal to a user equipment via the mapped node, wherein the plurality of nodes are installed in a geographically distributed manner, and the node mapped to the at least one base station varies temporally.
    Type: Grant
    Filed: September 30, 2011
    Date of Patent: August 11, 2015
    Assignee: LG ELECTRONICS INC.
    Inventors: Ji Won Kang, Su Nam Kim, Bin Chul Ihm, Jin Young Chun, Sung Ho Park
  • Method and apparatus for correcting errors in a multiple subcarriers communication system using multiple antennas
    Patent number: 9106291
    Abstract: A method for correcting errors in a multiple antenna system based on a plurality of sub-carriers and a transmitting/receiving apparatus supporting the same are disclosed. The method includes determining a phase shift based precoding matrix phase shifted at a predetermined phase angle, initially transmitting each sub-carrier symbol to a receiver in a packet unit by using the phase shift based precoding matrix, reconstructing the phase shift based precoding matrix to reduce a spatial multiplexing rate if a negative reception acknowledgement (NACK) is received from the receiver, and retransmitting the initially transmitted sub-carrier symbol by using the reconstructed phase shift based precoding matrix or by changing the phase shift based precoding matrix using offset information fed back from the receiver or random offset information.
    Type: Grant
    Filed: December 26, 2013
    Date of Patent: August 11, 2015
    Assignee: LG ELECTRONICS INC.
    Inventors: Moon II Lee, Bin Chul Ihm, Jin Young Chun
  • Apparatus for transmitting and receiving signal in distributed antenna system
    Patent number: 9094060
    Abstract: The present invention relates to a method for receiving a signal through a terminal in a distributed antenna system (DAS) comprising the steps of: receiving composition information of a local midamble corresponding to a terminal or a terminal group including the terminal from a base station which belongs to the DAS; and receiving the local midamble from the base station, and the local midamble can be a midamble corresponding to one or more effective transmission antennas associated with the terminal or the terminal group of a plurality of antennas of the base station.
    Type: Grant
    Filed: March 4, 2011
    Date of Patent: July 28, 2015
    Assignee: LG ELECTRONICS, INC.
    Inventors: Ji Won Kang, Bin Chul Ihm, Jin Young Chun
  • Method and apparatus for allocating bandwidth request channel in wireless communication system including relay station
    Patent number: 9094952
    Abstract: A method and apparatus of allocating a bandwidth request channel (BRCH) in a wireless communication system including a relay station (RS) is provided. At least one first BRCH for a bandwidth request of a mobile station (MS) connected to a base station (BS) and at least one second BRCH for a bandwidth request of the RS are allocated. An opportunity index is assigned to each of the at least one first BRCH and the at least one second BRCH, and the opportunity index assigned to the at least one second BRCH is started after the opportunity index assigned to the at least one first BRCH.
    Type: Grant
    Filed: June 30, 2011
    Date of Patent: July 28, 2015
    Assignee: LG Electronics Inc.
    Inventors: Jin Young Chun, Jin Sam Kwak, Hee Jeong Cho, Bin Chul Ihm, Young Soo Yuk
  • Method and apparatus for feedback transmission in wireless communication system
    Patent number: 9094252
    Abstract: A method and an apparatus for feedback transmission in a wireless communication system are provided. A terminal receives information about a short-term feedback period and a long-term feedback period from a base station, and then transmits to the base station short-term feedback information per short-term feedback period or long-term feedback information per long-term feedback period over a primary fast feedback channel (PFBSCH). The long-term feedback information contains an index of a subband subjected to channel measurement and a difference in measurement values that is a difference between a reference channel measurement value and a channel measurement value being measured.
    Type: Grant
    Filed: July 30, 2010
    Date of Patent: July 28, 2015
    Assignee: LG ELECTRONICS INC.
    Inventors: Jin Young Chun, Wook Bong Lee, Bin Chul Ihm
  • Method and apparatus for measuring interference in a wireless communication system
    Patent number: 9055476
    Abstract: Provided are a method and apparatus for measuring interference in a wireless communication system. A terminal receives, from a base station, a zero-power channel state information (CSI) reference signal (RS) indicator that indicates whether or not to estimate interference using a zero-power CSI RS signal, and, according to the zero-power CSI RS indicator, measures interference on the basis of the zero-power CSI RS.
    Type: Grant
    Filed: August 20, 2012
    Date of Patent: June 9, 2015
    Assignee: LG Electronics Inc.
    Inventors: Jin Young Chun, Ki Tae Kim, Su Nam Kim, Ji Won Kang, Bin Chul Ihm, Sung Ho Park
  • Signal transmitting method and device in a multi-node system
    Patent number: 9042475
    Abstract: Provided is a signal transmitting method of a terminal in a multi-node system including and configured to control a plurality of nodes and a base station connected to each of the plurality of nodes. The method includes: estimating a channel of at least one node by receiving a reference signal from at least one node among the plurality of nodes; selecting a preferred rank and a precoding matrix index by applying at least one precoding matrix to the estimated channel; selecting one of a plurality of codeword-layer mappings (CLMs) by applying a precoding matrix indicated by the rank and the precoding matrix index; and transmitting the selected rank, the selected precoding matrix index, and a CLM indicator to the base station.
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: May 26, 2015
    Assignee: LG Electronics Inc.
    Inventors: Ji Won Kang, Bin Chul Ihm, Su Nam Kim, Jin Young Chun, Sung Ho Park, Ki Tae Kim
  • METHOD FOR TRANSMITTING AND RECEIVING SIGNALS USING MULTI-BAND RADIO FREQUENCIES
    Publication number: 20150131598
    Abstract: A method for transmitting, by a base station, signals in a communication system. Control information for a subsidiary carrier band is transmitted to a mobile station via a primary carrier band. Data is transmitted to the mobile station via the subsidiary carrier band based on the control information and via the primary carrier band. Furthermore, the primary carrier band is a carrier frequency band which the mobile station initially attempts to access or via which information of a carrier aggregation configuration is transmitted. Additionally, the control information includes a logical index assigned to the subsidiary carrier band for the mobile station and a physical index of a frequency allocation band used as the subsidiary carrier band. The physical index corresponds to one of plural absolute frequency band indexes assigned to frequency allocation bands available in the communication system.
    Type: Application
    Filed: January 20, 2015
    Publication date: May 14, 2015
    Applicant: LG ELECTRONICS INC.
    Inventors: Seung Hee HAN, Jin Young CHUN, Wook Bong LEE, Min Seok NOH, Jin Sam KWAK, Yeong Hyeon KWON, Hyun Woo LEE, Jin Soo CHOI, Dong Cheol KIM, Sung Ho MOON, Bin Chul IHM, Moon Il LEE
  • Bandwidth request preamble sequence selection method and random access method
    Patent number: 9025519
    Abstract: The present invention relates to a bandwidth request preamble sequence selecting method for bandwidth requests on a wireless access system, and to a random access procedure using the same. Also, the present invention relates to devices supporting the random access procedure. In one example of the present invention, the method for randomly accessing a wireless access system may comprise the steps of: receiving a first message containing a predefined bandwidth request index from a base station; selecting a bandwidth request preamble sequence from the predefined bandwidth request index on the basis if the properties of uplink data to be transmitted by a mobile terminal; transmitting a second message containing a predefined bandwidth request index to the base station; and transmitting the selected bandwidth request preamble sequence to the base station.
    Type: Grant
    Filed: March 8, 2010
    Date of Patent: May 5, 2015
    Assignee: LG Electronics Inc.
    Inventors: Hee Jeong Cho, Young Soo Yuk, Ki Seon Ryu, Sung Ho Park, Jin Young Chun, Yong Ho Kim
  • Method for transmitting control information in multiple antenna system
    Patent number: 9025688
    Abstract: A method of transmitting control information includes dividing frequency bandwidth into ranges to which the same PMI (precoding matrix index) is applied, obtaining multiple antenna information by the range to which the same PMI is applied and transmitting the multiple antenna information. Since multiple antenna information is transmitted by the unit of a range to which the same PMI is applied, radio resources allocated for transmitting the multiple antenna information may be reduced, thereby enhancing data transmission efficiency.
    Type: Grant
    Filed: March 12, 2008
    Date of Patent: May 5, 2015
    Assignee: LG Electronics Inc.
    Inventors: Hyun Soo Ko, Bin Chul Ihm, Jin Young Chun, Wook Bong Lee, Moon Il Lee, Jae Wan Kim
  • Method for eliminating interference in multi-node system and terminal using method thereof
    Patent number: 9025510
    Abstract: An interference elimination method performed by a first terminal in a multi-node system and an apparatus for the same are provided. The method includes receiving information from a node related to a second precoding matrix that is applied to a second signal to be transmitted to a second terminal; receiving a first signal to which a first precoding matrix is applied from the node; and eliminating an interference signal contained in the first signal based on the information on related to the second precoding matrix.
    Type: Grant
    Filed: June 28, 2011
    Date of Patent: May 5, 2015
    Assignee: LG Electronics Inc.
    Inventors: Jin Young Chun, Ki Tae Kim, Su Nam Kim, Ji Won Kang, Bin Chul Ihm, Sung Ho Park
  • Method and apparatus for configuring frame in wireless communication system including relay station
    Patent number: 9014067
    Abstract: A method and apparatus of communicating by a relay station a wireless communication system including a relay station is provided. The method include communicating with at least one of a base station and a user equipment through a frequency division duplex (FDD) uplink (UL) frame configured by the base station, the FDD UL frame including a UL relay zone including a plurality of UL subframes and a UL access zone including a plurality of UL subframes. The UL relay zone is a sector used for the relay station to transmit a signal to the base station, and the UL access zone is a sector used for the relay station to receive a signal from the user equipment. The UL relay zone is located before the UL access zone within the FDD UL frame.
    Type: Grant
    Filed: April 21, 2011
    Date of Patent: April 21, 2015
    Assignee: LG Electronics Inc.
    Inventors: Jin Young Chun, Jin Sam Kwak, Jin Soo Choi, Bin Chul Ihm, Wook Bong Lee
  • Method for enabling a terminal to efficiently detect and search for a femto base station
    Patent number: 9014153
    Abstract: A method for enabling a mobile station (MS) to efficiently detect and search for a femto base station is disclosed. The method comprises the steps of receiving a signal including information of a femto base station; and searching for the femto base station on the basis of the received information, wherein said received information is a sequence including at least one of the following: the entirety or a part of a femto base station ID (Identity), the entirety or a part of a cell ID, a sector ID, the entirety or a part of a CSG (Closed Subscriber Group) ID, and a frequency allocation index. In the step of receiving femto base station information, a preamble and data containing information on the femto base station are received. In the step of detecting the femto base station, the femto base station is separately detected on the basis of the received information.
    Type: Grant
    Filed: November 16, 2009
    Date of Patent: April 21, 2015
    Assignee: LG Electronics Inc.
    Inventors: Sung Ho Park, Yong Ho Kim, Jin Lee, Bin Chul Ihm, Jin Young Chun
  • METHOD FOR TRANSMITTING AND RECEIVING DOWNLINK CONTROL INFORMATION
    Publication number: 20150098426
    Abstract: A method for efficiently transmitting and receiving downlink control information is disclosed. The method includes, at a base station, receiving feedback information including a precoding matrix index (PMI) from a user equipment (UE) and transmitting precoding information having a predetermined bit number according to the number of antenna ports and a transmission mode of the base station. The precoding information of a predetermined transmission mode in the precoding information includes confirmation information indicating that the base station uses a PMI which is recently received from the UE.
    Type: Application
    Filed: November 7, 2014
    Publication date: April 9, 2015
    Inventors: Moon IL LEE, Hyun Soo KO, Bin Chul IHM, Wook Bong LEE, Jae Hoon CHUNG, Jin Young CHUN
  • Method of transmitting and receiving signal in a distributed antenna system
    Patent number: 9001799
    Abstract: A method of transmitting a signal from a base station to a user equipment in a multi-node system comprises down-link-transmitting a signal at a first zone of a radio frame by using centralized antennas (CAs); and downlink-transmitting a signal at a second zone used for a backhaul link of a relay in the radio frame by using distributed nodes, wherein the first zone and the second zone are multiplexed by time division.
    Type: Grant
    Filed: April 7, 2011
    Date of Patent: April 7, 2015
    Assignee: LG Electronics Inc.
    Inventors: Jin Young Chun, Ji Won Kang, Seung Hyun Kang, Ja Ho Koo, Bin Chul Ihm, Moon Il Lee
  • Method and apparatus of transmitting and receiving signal in a distributed antenna system
    Patent number: 9001717
    Abstract: A method of transmitting a signal from a base station to a user equipment in a multi-node system is disclosed. The method comprises the steps of allocating a resource of a certain zone to each of nodes in accordance with a radio resource multiplexing scheme; and transmitting the signal to the user equipment by using a resource zone allocated to the node.
    Type: Grant
    Filed: April 21, 2011
    Date of Patent: April 7, 2015
    Assignee: LG Electronics Inc.
    Inventors: Jin Young Chun, Ji Won Kang, Su Nam Kim, Bin Chul Ihm
  • Method in which a mobile terminal transmits/receives a signal using a predetermined TDD frame structure in a wireless communication system
    Patent number: 9001708
    Abstract: The mobile station for transceiving signals using a predetermined time division duplex (TDD) frame structure in a wireless communication system includes a receiver for receiving a midamble from a base station (BS), and a relay station (RS). The receiver receives, from the BS, a first midamble through a second subframe of a downlink access zone of the BS and/or through a first subframe of a downlink relay zone that follows the downlink access zone. Alternatively, the receiver receives, from the RS, a second midamble through a second subframe of a downlink access zone of the RS. A transition gap in a downlink region is located in the last subframe of the downlink access zone of the RS, which follows the downlink access zone of the RS, and a transition gap in an uplink region is located in a first subframe of an uplink relay zone of the RS.
    Type: Grant
    Filed: August 30, 2010
    Date of Patent: April 7, 2015
    Assignee: LG Electronics Inc.
    Inventors: Dong Guk Lim, Young Soo Yuk, Jian Xu, Han Gyu Cho, Jin Young Chun, Jin Sam Kwak
  • Method of transmitting and receiving signal in a distributed antenna system
    Patent number: 9001761
    Abstract: A method of transmitting a signal from a base station to a user equipment in a distributed antenna system (DAS) comprises equally broadcasting DA common broadcast information, which includes information required for initial access, into a cell through a plurality of DA groups of the base station; and independently broadcasting DA specific broadcast information, which includes information on the number of antennas of each DA group, through each DA group of the base station, wherein the DA group includes one or more DAs.
    Type: Grant
    Filed: April 6, 2011
    Date of Patent: April 7, 2015
    Assignee: LG Electronics Inc.
    Inventors: Jin Young Chun, Ji Won Kang, Sung Ho Park, Su Nam Kim, Bin Chul Ihm, Wook Bong Lee
  • Method in which user equipment transmits a signal in a distributed antenna system, and user equipment using same
    Patent number: 8989655
    Abstract: A method in which user equipment transmits a signal in a distributed antenna system in which a plurality of antennas is distributed in a cell, comprises the following steps: receiving uplink antenna information from a base station; controlling uplink power on the basis of the uplink antenna information; and transmitting an uplink signal on the basis of the uplink power control, wherein the uplink antenna information indicates a receiving antenna of the base station that receives the uplink signal.
    Type: Grant
    Filed: March 23, 2011
    Date of Patent: March 24, 2015
    Assignee: LG Electronics Inc.
    Inventors: Ji Won Kang, Jin Young Chun, Su Nam Kim, Bin Chul Ihm, Sung Ho Park