Patents by Inventor Ji-Won Kang

Ji-Won Kang 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 SEARCHING FOR CONTROL CHANNEL IN MULTI-NODE SYSTEM
    Publication number: 20140348092
    Abstract: Provided are a method for searching for a control channel by a user terminal in a multi-node system and a user terminal using the method. The method comprises: setting a first common search space (CSS) and a second CSS, which are distinguishable, in a subframe comprising a plurality of orthogonal frequency division multiplexing (OFDM) symbols; and searching for control information from the first CSS and/or the second CSS, wherein in the first CSS a first piece of control information that is cyclic redundancy check (CRC)-scrambled by a radio network temporary identifier (RNTI) belonging to a first RNTI set is searched, and wherein in the second CSS a second piece of control information that is CRC-scrambled by an RNTI belonging to a second RNTI set is searched.
    Type: Application
    Filed: October 30, 2012
    Publication date: November 27, 2014
    Applicant: LG ELECTRONICS INC.
    Inventors: Bin Chul Ihm, Ki Tae Kim, Su Nam Kim, Ji Won Kang, Jin Young Chun, Sung Ho Park
  • Method for transmitting a signal in a distributed antenna system
    Patent number: 8891654
    Abstract: The present invention relates to a method for configuring, for each of one or more ranks in the DAS (distributed antenna system), a codebook for a DAS, including pre-coding matrices for the DAS, wherein the matrices include information on at least one or more antennas used for communication with a specific terminal, from among the whole antenna of the base station which belongs to the DAS, and information on the ratio of electric power allocated to each of the antennas of the base station. The present invention also relates to a method for transmitting a signal which is pre-coded using the thus-configured pre-coding matrices for the DAS.
    Type: Grant
    Filed: December 7, 2010
    Date of Patent: November 18, 2014
    Assignee: LG Electronics Inc.
    Inventors: Ji Won Kang, Wook Bong Lee, Bin Chul Ihm, Jin Young Chun
  • Signal transmission method in distributed antenna system
    Patent number: 8885751
    Abstract: The present invention relates to a method for a random terminal to receive a signal from a base station in a distributed antenna system (DAS), and more specifically, to a method for a terminal for receiving a signal from a base station, comprising: selecting a precoding matrix corresponding to a terminal-specific, numbered antenna from a codebook for the DAS, which is based on control information about the terminal-specific antenna to be used for communication with the terminal from among a plurality of antennas which includes antennas that are isolated from each other by a predetermined distance; and processing the received signal by using the selected precoding matrix.
    Type: Grant
    Filed: February 9, 2011
    Date of Patent: November 11, 2014
    Assignee: LG Electronics Inc.
    Inventors: Ji Won Kang, Bin Chul Ihm, Jin Young Chun
  • Method and apparatus for transmitting data in a wireless communication system
    Patent number: 8879414
    Abstract: The present invention relates to a method and apparatus for transmitting data in a wireless communication system. The method for transmitting data involves allocating a first node set containing a plurality of nodes for the transmission of downlink signals and a second node set containing a plurality of nodes for the reception of uplink signals, and communicating with a terminal through the first node set and the second node set. In the event the uplink transmission and downlink transmission are performed by base stations or nodes that are different from each other, the operation of the base stations and of a terminal can be efficiently controlled.
    Type: Grant
    Filed: June 15, 2011
    Date of Patent: November 4, 2014
    Assignee: LG Electronics Inc.
    Inventors: Jin Young Chun, Ji Won Kang, Bin Chul Ihm, Sung Ho Park, Ki Tae Kim, Su Nam Kim
  • METHOD AND DEVICE FOR TRANSMITTING REFERENCE SIGNAL IN WIRELESS COMMUNICATION SYSTEM
    Publication number: 20140321414
    Abstract: The present invention relates to a method and device for decoding a channel in a wireless communication system. User equipment receives, from a base station, a candidate group of antenna ports including a plurality of antenna ports, and receives a reference signal from the base station onto enhanced physical downlink control channel (e-PDCCH) ports that correspond to all or some of the plurality of antennas in the candidate group of antenna ports. The user equipment blind-decodes the e-PDCCH configured in a physical downlink shared channel (PDSCH), on the basis of the received reference signal.
    Type: Application
    Filed: December 5, 2012
    Publication date: October 30, 2014
    Applicant: LG ELECTRONICS INC.
    Inventors: Jin Young Chun, Bin Chul Ihm, Ji Won Kang, Ki Tae Kim, Sung Ho Park, Su Nam Kim
  • Method and apparatus for transceiving signals in a distributed antenna system
    Patent number: 8867446
    Abstract: The present invention relates to a terminal which receives signals from a base station, and to a method in which the terminal receives signals from the base station in a distributed antenna system (DAS). The terminal receives, from the base station having a plurality of antennas, control information on one or more active transmission antennas allocated to the terminal, from among the plurality of antennas, and receives signals from the base station via said one or more active transmission antennas.
    Type: Grant
    Filed: January 21, 2011
    Date of Patent: October 21, 2014
    Assignee: LG Electronics Inc.
    Inventors: Ji Won Kang, Bin Chul Ihm, Jin Young Chun
  • METHOD AND APPARATUS FOR MEASURING CHANNEL QUALITY INDICATOR IN WIRELESS COMMUNICATION SYSTEM
    Publication number: 20140301238
    Abstract: Provided are a method and an apparatus for measuring channel quality indicator in a wireless communication system. User equipment receives, from a base station, at least one of a cell-specific reference signal (CRS) which is cell-specifically transmitted and a channel state information reference signal (CSI RS). The user equipment also receives, from the base station, a demodulation reference signal (DMRS) which is user equipment-specifically transmitted in an enhanced physical downlink control channel (e-PDCCH) region constituted in a physical downlink shared channel (PDSCH) region. The terminal measures the CQI based on either at least one of the CRS and the CSI RS or the DMRS.
    Type: Application
    Filed: November 23, 2012
    Publication date: October 9, 2014
    Applicant: LG ELECTRONICS INC.
    Inventors: Jin Young Chun, Bin Chul Ihm, Ji Won Kang, Ki Tae Kim, Sung Ho Park, Su Nam Kim
  • METHOD AND APPARATUS FOR ALLOCATING CONTROL CHANNEL IN WIRELESS COMMUNICATION SYSTEM
    Publication number: 20140293957
    Abstract: Provided are a method and an apparatus for allocating a control channel in a wireless communication system. A base station allocates an enhanced physical downlink control channel (e-PDCCH) to a localized region within a physical downlink shared channel (PDSCH) region, allocates the e-PDCCH to a distributed region within the PDSCH region, and transmits a scheduling assignment via the allocated e-PDCCH.
    Type: Application
    Filed: October 26, 2012
    Publication date: October 2, 2014
    Applicant: LG ELECTRONICS INC.
    Inventors: Jin Young Chun, Bin Chul Ihm, Ji Won Kang, Ki Tae Kim, Sung Ho Park, Su Nam Kim
  • METHOD AND APPARATUS FOR DETECTING THE LOCATIONS OF TERMINALS IN A MULTINODE SYSTEM
    Publication number: 20140295883
    Abstract: Provided are a method and an apparatus for detecting the locations of terminals in a multi-node system. A plurality of nodes transmit location reference signals which are distinguished by node, and a terminal performs feedback of channel information on each node using the location reference signals. Various signaling for detecting the locations of the terminals may be performed for each node, that is, for each point, rather than cell-based signaling.
    Type: Application
    Filed: September 7, 2012
    Publication date: October 2, 2014
    Applicant: LG ELECTRONICS INC.
    Inventors: Ji Won Kang, Jin Young Chun, Ki Tae Kim, Su Nam Kim, Bin Chul Ihm, Sung Ho Park
  • METHOD AND DEVICE FOR ALLOCATING SEARCH SPACE OF CONTROL CHANNEL IN SUBFRAME
    Publication number: 20140293942
    Abstract: Disclosed are a method and a device for allocating a search space of a control channel in a subframe. A method for monitoring downlink control information comprises the steps of: acquiring first control information on a first enhanced-physical downlink control channel (e-PDCCH) by monitoring a common search space in a first slot of a subframe; and acquiring second control information on a second e-PDCCH by monitoring a user equipment (UE)-specific search space in a second slot of the subframe. Thus, a terminal can obtain cell-specific information through an e-PDCCH even without a legacy physical downlink control channel (PDCCH).
    Type: Application
    Filed: October 12, 2012
    Publication date: October 2, 2014
    Applicant: LG ELECTRONICS INC.
    Inventors: Ji Won Kang, Jin Young Chun, Ki Tae Kim, Su Nam Kim, Bin Chul Ihm, Sung Ho Park
  • METHOD AND APPARATUS FOR CONTROL CHANNEL DECODING IN MULTI-NODE SYSTEM
    Publication number: 20140286285
    Abstract: Provided are a method and an apparatus for control channel decoding of a terminal in a multi-node system. The method sets a search space for searching a control channel and can perform the decoding by using different demodulation methods according to aggregation levels capable of constituting the control channel within the search space. In addition, the method determines the DCI format to be searched according to a transmission mode and can use different demodulation methods according to the determined DCI format. Furthermore, the method modulates DCI format to a first modulation degree when demodulating the DCI format, and can demodulate the DCI format to a second modulation degree when the DCI format is not detected.
    Type: Application
    Filed: October 23, 2012
    Publication date: September 25, 2014
    Inventors: Sung Ho Park, Jin Young Chun, Ki Tae Kim, Su Nam Kim, Ji Won Kang, Bin Chul Ihm
  • METHOD AND APPARATUS FOR MEASURING INTERFERENCE IN WIRELESS COMMUNICATION SYSTEM
    Publication number: 20140286189
    Abstract: Provided is a method for measuring interference by a user equipment (UE) in a multi-node system comprising inside a cell a base station and a plurality of nodes that are controlled by the base station, and the user equipment for same. The method comprises: receiving from the base station a cell-specific interference measurement setting message; and measuring the interference in a resource region indicated by the cell-specific interference measurement setting message, wherein the cell-specific interference measurement setting message is characterized by all of the nodes in the cell comprising information for setting a cell-specific interference measurement region for transmitting a zero-power channel state information (CSI) reference signal (RS).
    Type: Application
    Filed: October 30, 2012
    Publication date: September 25, 2014
    Applicant: LG ELECTRONICS INC.
    Inventors: Ji Won Kang, Jin Young Chun, Ki Tae Kim, Su Nam Kim, Bin Chul Ihm, Sung Ho Park
  • METHOD AND APPARATUS FOR DETECTING CONTROL CHANNEL IN WIRELESS COMMUNICATION SYSTEM
    Publication number: 20140286299
    Abstract: Provided are a method for searching for a control channel by a terminal in a wireless communication system and a terminal for using the method. The method determines whether an allocation unit constituting an enhanced-physical downlink control channel (E-PDCCH) is one or plural in number; and, if the allocation unit constituting the E-PDCCH is plural in number, searches for the E-PDCCH using a user equipment specific reference signal (URS) of an antenna port defined in one allocation unit from among the plurality of allocation units.
    Type: Application
    Filed: November 16, 2012
    Publication date: September 25, 2014
    Applicant: LG ELECTRONICS INC.
    Inventors: Bin Chul Ihm, Ki Tae Kim, Su Nam Kim, Ji Won Kang, Jin Young Chun, Sung Ho Park
  • METHOD AND APPARATUS FOR MEASURING INTERFERENCE IN WIRELESS COMMUNICATION SYSTEM
    Publication number: 20140286188
    Abstract: Provided is a method for measuring interference by a user equipment (UE) in a multi-node system comprising inside a cell a base station and a plurality of nodes that are controlled by the base station, and the user equipment for same. The method comprises: receiving from the base station a node set-specific interference measurement region (NSIR) setting message from a node set that comprises a portion of the nodes from the plurality of nodes; and measuring the interference in a resource region that is indicated by the NSIR setting message, wherein the NSIR setting message is characterized by all of the nodes in the node set comprising information for setting an interference measurement region for transmitting a zero-power channel state information (CSI) reference signal (RS).
    Type: Application
    Filed: October 30, 2012
    Publication date: September 25, 2014
    Applicant: LG ELECTRONICS INC.
    Inventors: Ji Won Kang, Jin Young Chun, Ki Tae Kim, Su Nam Kim, Bin Chul Ihm, Sung Ho Park
  • Method and apparatus for transmitting reference signal in multi-node system
    Patent number: 8838159
    Abstract: A method of transmitting a reference signal in a multi-node system including a plurality of nodes and a base station for controlling the plurality of nodes is provided. The method includes: transmitting node information to a user equipment; and transmitting the reference signal to the user equipment from at least one node among the plurality of nodes on the basis of the node information, wherein the node information includes information capable of identifying the reference signal transmitted from the at least one node, and wherein each of the plurality of nodes transmits a different reference signal.
    Type: Grant
    Filed: June 27, 2011
    Date of Patent: September 16, 2014
    Assignee: LG Electronics Inc.
    Inventors: Ji Won Kang, Jin Young Chun, Ki Tae Kim, Su Nam Kim, Bin Chul Ihm, Sung Ho Park
  • METHOD AND APPARATUS FOR MEASURING INTERFERENCE IN A WIRELESS COMMUNICATON SYSTEM
    Publication number: 20140254418
    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: August 20, 2012
    Publication date: September 11, 2014
    Applicant: 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 TRANSMITTING FEEDBACK IN A WIRELESS COMMUNICATION SYSTEM
    Publication number: 20140254705
    Abstract: Disclosed are a method and apparatus for transmitting feedback in a wireless communication system. A terminal transmits first CSI (channel state information) on a first node combination to a base station, or a terminal transmits second CSI on a second node combination to the base station. The total number of antenna ports in the first node combinations is one of two, four, or eight, and the total number of antenna ports in the second node combination is not two, four, and eight.
    Type: Application
    Filed: August 10, 2012
    Publication date: September 11, 2014
    Applicant: 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 MEASURING INTERFERENCE IN A WIRELESS COMMUNICATION SYSTEM
    Publication number: 20140254419
    Abstract: The present invention relates to a method and apparatus for measuring interference in a wireless communication system. User equipment (UE) receives a common reference signal (CRS) from a first domain having the same cell identity and a channel state information (CSI) reference signal (RS) from a second domain including a configuration of the CSI RS designated by the UE. The UE measures interference for the second domain on the basis of the received CRS and CSI RS.
    Type: Application
    Filed: October 2, 2012
    Publication date: September 11, 2014
    Applicant: LG ELECTRONICS INC.
    Inventors: Jin Young Chun, Ki Tae Kim, Ji Won Kang, Sung Ho Park, Su Nam Kim, Bin Chul Ihm
  • Method and apparatus for transmitting synchronization signal in multi-node system
    Patent number: 8831119
    Abstract: A method of transmitting a synchronization signal in a multi-node system having a plurality of nodes and a base station for controlling the plurality of node is provided. The method includes: generating a synchronization signal sequence; and mapping the generated synchronization signal sequence to a resource element, and thereafter transmitting the mapped synchronization signal sequence to a user equipment via at least one node among the plurality of nodes, wherein the synchronization signal sequence is generated based on an identifier (ID) of a transmission node for transmitting the synchronization signal sequence.
    Type: Grant
    Filed: June 27, 2011
    Date of Patent: September 9, 2014
    Assignee: LG Electronics Inc.
    Inventors: Ji Won Kang, Jin Young Chun, Sung Ho Park, Su Nam Kim, Bin Chul Ihm, Seung Hee Han
  • METHOD AND APPARATUS FOR CHANNEL INFORMATION FEEDBACK IN WIRELESS COMMUNICATION SYSTEM
    Publication number: 20140247748
    Abstract: Provided are a method and apparatus for a UE (user equipment) to provide reference signal feedback in a wireless communication system. The method includes: receiving, from a base station, CSI-RS configuration information for configuring CSI-RS (channel state information reference signal) patterns, the CSI-RS configuration information containing usage information; performing a first measurement for radio resource management on all CSI-RS patterns configured based on the CSI-RS configuration information; and performing a second measurement only on CSI-RS patterns corresponding to the usage information, the second measurement being determined by the usage indicated by the usage information.
    Type: Application
    Filed: October 12, 2012
    Publication date: September 4, 2014
    Inventors: Ji Won Kang, Jin Young Chun, Ki Tae Kim, Su Nam Kim, Bin Chul Ihm, Sung Ho Park