Patents by Inventor Yeong Hyeon Kwon

Yeong Hyeon Kwon 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: 8358585
    Abstract: A method for transmitting and receiving channel state information (CSI) periodically and aperiodically is disclosed. The method for aperiodically transmitting channel state information (CSI) by a terminal includes receiving an indicator requesting a channel state information report of a downlink channel from a base station over a downlink control channel, and aperiodically transmitting the channel state information (CSI) to the base station over a physical uplink shared channel (PUSCH) upon receiving the indicator from the base station.
    Type: Grant
    Filed: January 8, 2009
    Date of Patent: January 22, 2013
    Assignee: LG Electronics Inc.
    Inventors: Jae Hoon Chung, Moon Il Lee, Yeong Hyeon Kwon, Hyun Soo Ko
  • Publication number: 20130010881
    Abstract: This is provided a method for allocating pilots to a sub-frame. The sub-frame includes a plurality of blocks in time domain. The method includes allocating a data demodulation (DM) pilot used for demodulating data to two blocks spaced not contiguous with each other, and allocating a channel quality (CQ) pilot. System capacity can be increased, and degradation of performance incurred by a channel estimation error can be minimized.
    Type: Application
    Filed: September 14, 2012
    Publication date: January 10, 2013
    Applicant: LG ELECTRONICS INC.
    Inventors: Min Seok NOH, Seung Hee HAN, Yeong Hyeon KWON, Hyun Woo LEE, Dong Chul KIM
  • Publication number: 20130010724
    Abstract: The present invention relates to a wireless communication system. In particular, the present invention relates to a method for handling physical downlink control channels (PDCCHs) in a user equipment, the method comprising: receiving a plurality of control channel elements (CCEs) from a base station; performing blind decoding of the plurality of CCEs in CCE aggregation units; and identifying a CCE aggregation level used for the PDCCH transmission, on the basis of the blinding decoding result, wherein the CCE aggregation level is relevant resource mapping of the control information included in the PDCCH.
    Type: Application
    Filed: February 1, 2011
    Publication date: January 10, 2013
    Inventors: Seung Hee Han, Yeong Hyeon Kwon, Jae Hoon Chung, Moon Il Lee
  • Patent number: 8351347
    Abstract: Disclosed is a method for transmitting a sounding reference signal from to a base station in a radio communication system. More specifically, the method comprises the steps of: transmitting a periodic sounding reference signal to a base station; receiving a transmission instruction for an additional sounding reference signal from the base station; multiplexing said periodic sounding reference signal and said additional sounding reference signal along a frequency axis or a time axis; and transmitting said multiplexed periodic sounding reference signal and said additional sounding reference signal to said base station. Said multiplexing step is characterized by multiplexing said periodic sounding reference signal and said additional sounding reference signal along a frequency axis or a time axis.
    Type: Grant
    Filed: May 17, 2010
    Date of Patent: January 8, 2013
    Assignee: LG Electronics Inc.
    Inventors: Min Seok Noh, Jae Hoon Chung, Yeong Hyeon Kwon
  • Patent number: 8351413
    Abstract: A method and apparatus of generating a ranging signal in a wireless communication system is provided. A mobile station (MS) generates a ranging code in which a covering code has been applied to each of a plurality of orthogonal frequency division multiple access (OFDMA) symbols, and maps the ranging code to a plurality of subcarriers constituting each of the OFDMA symbols. The ranging signal is generated by performing OFDMA modulation on each of the OFDMA symbols.
    Type: Grant
    Filed: August 19, 2010
    Date of Patent: January 8, 2013
    Assignee: LG Electronics Inc.
    Inventors: Hyun Woo Lee, Han Gyu Cho, Jin Sam Kwak, Yeong Hyeon Kwon
  • Patent number: 8352825
    Abstract: A method for packet retransmission employing feedback information is disclosed. The method for packet retransmission employing feedback information comprises receiving reception acknowledgement information from a receiver after a transmitter transmits packets, the reception acknowledgement information representing channel status information and decoding success/failure of the packets; and changing a retransmission mode in accordance with the channel status information if the reception acknowledgement information represents decoding failure, and transmitting retransmission packets of the packets in accordance with the changed retransmission mode. Thus, it is possible to improve decoding probability of the receiver and increase efficiency of retransmission.
    Type: Grant
    Filed: January 5, 2009
    Date of Patent: January 8, 2013
    Assignee: LG Electronics Inc.
    Inventors: Min Seok Noh, Yeong Hyeon Kwon, Jin Sam Kwak, Dong Cheol Kim, Sung Ho Moon, Seung Hee Han, Hyun Woo Lee
  • Publication number: 20130003675
    Abstract: A method for generating/transmitting a transmission-unit symbol sequence is disclosed. In the case of transmission information, the information is modulated in time and frequency domains on the basis of a predetermined transmission unit (e.g., a transmission time interval TTI or slot), simultaneous transmission of the information is made, and then a transmission unit symbol is generated/transmitted. A transmission sequence is masked in each symbol contained in one transmission unit. Symbol-unit circular shift (cyclic shift) is applied to the masked result, so that transmission efficiency increases. A control signal transmission method for supporting a variety of formats and a signal transmission method based on a prime-length sequence are also provided.
    Type: Application
    Filed: June 29, 2012
    Publication date: January 3, 2013
    Inventors: Seung Hee HAN, Min Seok NOH, Yeong Hyeon KWON, Hyun Woo LEE, Dong Cheol KIM, Jin Sam KWAK
  • Patent number: 8345535
    Abstract: A method and apparatus of generating a ranging preamble code in a wireless communication system is provided. A mobile station (MS) generates one of a plurality of ranging preamble codes, wherein the plurality of ranging preamble codes are based on a padded Zadoff-Chu (ZC) sequence to which a cyclic shift is applied in a unit of NCS, where NCS is a function of a cyclic prefix (CP) length in a time domain.
    Type: Grant
    Filed: July 12, 2010
    Date of Patent: January 1, 2013
    Assignee: LG Electronics Inc.
    Inventors: Hyun Woo Lee, Yeong Hyeon Kwon, Han Gyu Cho, Jin Sam Kwak, Min Seok Noh
  • Patent number: 8345792
    Abstract: A method of transmitting data in a wireless communication system includes mapping first data to first symbols on a signal constellation, mapping second data assisting the first data to second symbols on the signal constellation, modulating the first symbols and the second symbols, and transmitting the modulated first symbols and the second symbols, wherein the distance between the first symbols is longer than that between the second symbols on the signal constellation.
    Type: Grant
    Filed: October 23, 2008
    Date of Patent: January 1, 2013
    Assignee: LG Electronics Inc.
    Inventors: Yeong Hyeon Kwon, Seung Hee Han, Hyun Woo Lee, Jin Sam Kwak, Dong Cheol Kim, Min Seok Noh
  • Patent number: 8345571
    Abstract: A method for transmitting channel information and a mobile communication terminal are disclosed. The method for transmitting channel information includes requesting, by a mobile station (MS) through a random access channel (RACH), a base station (BS) to allocate a resource for transmitting channel information, if it is determined that transmission of a channel status of a downlink channel is necessary as a result of monitoring the channel status, and transmitting, from the MS through the RACH to the BS, the channel information which is updated according to the channel status if the resource allocation is completed. Therefore an existing control channel can be efficiently used, without adding a new control channel for channel quality identifier (CQI) transmission by a mobile station or modifying the configuration of a transmitting stage. Further, signal interference for the existing channels can be prevented when generating a scheduling request.
    Type: Grant
    Filed: September 8, 2008
    Date of Patent: January 1, 2013
    Assignee: LG Electronics Inc.
    Inventors: Yeong Hyeon Kwon, Seung Hee Han, Hyun Woo Lee, Jin Sam Kwak, Dong Cheol Kim, Min Seok Noh
  • Patent number: 8345621
    Abstract: A method and apparatus of transmitting signals for segmented access in a communication system is disclosed. The method for transmitting signals from a user equipment in a communication system includes the steps of selecting a predetermined channel structure depending on location of the user equipment among available channels defined differently depending on the location of the user equipment within a cell, and transmitting signals using the selected channel structure. Also, a method for transmitting signals using sequences allocated differently depending on location of a user equipment within a cell is disclosed.
    Type: Grant
    Filed: August 8, 2007
    Date of Patent: January 1, 2013
    Assignee: LG Electronics Inc.
    Inventors: Yeong-Hyeon Kwon, Seung Hee Han, Hyun Hwa Park, Dong Cheol Kim, Hyun Woo Lee, Min Seok Noh, Dragan Vujcic
  • Publication number: 20120327875
    Abstract: The present invention provides a method and apparatus for transmitting uplink control information (UCI) with user equipment in a wireless communication system. The user equipment performs channel coding on information bits of UCI to generate encoded information bits; modulates the generated encoded information bits to generate complex modulation symbols; spreads the complex modulation symbols blockwise into a plurality of single carrier frequency division multiple access (SC-FDMA) symbols on the basis of an orthogonal sequence; and transmits the spread complex modulation symbols to a base station.
    Type: Application
    Filed: January 27, 2011
    Publication date: December 27, 2012
    Applicant: LG Electronic Inc.
    Inventors: Seung Hee Han, Yeong Hyeon Kwon, Jae Hoon Chung, Moon Il Lee
  • Patent number: 8340014
    Abstract: A method for transmitting and receiving signals using multi-band Radio Frequencies (RFs) is provided. The method includes transmitting/receiving control information identifying a subsidiary carrier frequency band for a user equipment via a primary carrier frequency band of the user equipment, wherein the control information includes information of a second ID assigned to a first ID of the subsidiary carrier frequency band among a plurality of first IDs, the first ID identifying the subsidiary carrier frequency band in the physical layer and the second ID identifying the subsidiary carrier frequency band in the specific layer.
    Type: Grant
    Filed: December 23, 2008
    Date of Patent: December 25, 2012
    Assignee: LG Electronics Inc.
    Inventors: Seung Hee Han, Min Seok Noh, Jin Sam Kwak, Yeong Hyeon Kwon, Hyun Woo Lee, Dong Cheol Kim, Sung Ho Moon
  • Patent number: 8340203
    Abstract: A data transmitting and receiving method of transmitting supplementary data in an OFDM communication system is disclosed. The method of transmitting and receiving the OFDM signal includes: mapping an input bit stream into at least one transfer symbol; changing at least one of amplitudes and phases of the transfer symbols that are transmitted by a specific sub-carrier group having a plurality of sub-carriers using constellation modification information to indicate specific additional data; and transmitting the transfer symbols, to which the changing is carried out, to a receiving end by an orthogonal frequency division multiplexing data processing, the constellation modification information being identical to each other with respect to the transfer symbols that are transmitted by the specific sub-carrier group.
    Type: Grant
    Filed: October 20, 2011
    Date of Patent: December 25, 2012
    Assignee: LG Electronics Inc.
    Inventors: Yeong Hyeon Kwon, Seung Hee Han, Min Seok Noh, Young Woo Yun
  • Patent number: 8340041
    Abstract: A method and apparatus of allocating a ranging channel in a wireless communication system is provided. A base station (BS) allocates at least one first ranging channel, having a first structure, and at least one second ranging channel, having a second structure, to a ranging subframe. The first structure or the second structure can be one of the ranging channel structures of an IEEE 802.16e system. A number of orthogonal frequency division multiplexing (OFDM) symbols included in the first structure and a number of OFDM symbols included in the second structure differs from each other. And a guard time including at least one OFDM symbol is allocated between the at least one first ranging channel and the at least one second ranging channel.
    Type: Grant
    Filed: July 1, 2010
    Date of Patent: December 25, 2012
    Assignee: LG Electronics Inc.
    Inventors: Hyun Woo Lee, Han Gyu Cho, Jin Sam Kwak, Yeong Hyeon Kwon
  • Publication number: 20120320951
    Abstract: Disclosed are a method and a device for transmitting uplink control information (UCI) by a terminal in a wireless communication system. The UCI transmission method comprises the steps of: generating an encoding information bit stream by performing channel coding for a UCI bit stream; generating complex modulation symbols by performing modulation for the generated encoding information bit stream; spreading the complex modulation symbols in block-wise on the basis of an orthogonal sequence; and transmitting the spread complex modulation symbols to a base station. The encoding information bit stream is generated by a channel coding for circularly repeating the UCI bit stream.
    Type: Application
    Filed: February 24, 2011
    Publication date: December 20, 2012
    Applicant: LG ELECTRONICS INC.
    Inventors: Seung Hee Han, Ji Woong Jang, Jae Hoon Chung, Han Gyu Cho, Yeong Hyeon Kwon, Seung Hyun Kang
  • Publication number: 20120320880
    Abstract: The present invention relates to a wireless communication system. More particularly, the present invention relates to a method for transmitting control information via a PUCCH in a wireless communication system, and to an apparatus for the method, wherein the method comprises the following steps: joint-coding a plurality of pieces of control information to obtain a single code word; obtaining a first modulated symbol sequence from the single code word; obtaining, from the first modulated symbol sequence, a plurality of second modulated symbol sequences corresponding to each slot in the PUCCH; cyclically shifting the plurality of second modulated symbol sequences in a time domain to obtain a plurality of third modulated symbol sequences; performing a discrete Fourier transform (DFT) precoding process on the plurality of third modulated symbol sequences to obtain a plurality of complex symbol sequences in a frequency domain; and transmitting the plurality of complex symbol sequences via the PUCCH.
    Type: Application
    Filed: January 14, 2011
    Publication date: December 20, 2012
    Applicant: LG ELECTRONICS INC.
    Inventors: Seung Hee Han, Sung Ho Moon, Jae Hoon Chung, Moon Il Lee, Yeong Hyeon Kwon
  • Patent number: 8331343
    Abstract: There is provided a method of enabling a user equipment to transmit a control signal to a base station. The method includes allocating a control signal to a control region on a subframe comprising the control region for the control signal and a data region for user data, wherein different frequency bands within the control region are allocated to different user equipments, and transmitting the subframe in uplink direction. A control signal can be robustly transmitted under variance of channel condition.
    Type: Grant
    Filed: April 30, 2010
    Date of Patent: December 11, 2012
    Assignee: LG Electronics Inc.
    Inventors: Yeong Hyeon Kwon, Seung Hee Han, Hyun Hwa Park, Dong Cheol Kim, Jin Sam Kwak, Hyun Woo Lee, Min Seok Noh
  • Patent number: 8320907
    Abstract: A method for performing a cell search procedure by a user equipment in a wireless communication system includes receiving a primary synchronization signal (PSS), and obtaining a correlation value of the PSS to detect a multimedia broadcast multicast service (MBMS) indicator indicating whether a service is a dedicated MBMS. Accordingly, whether the service is the dedicated MBMS is indicated using a primary synchronization signal or a secondary synchronization signal used in an initial cell search process, and whether the service is the dedicated MBMS can be known without additional complexity. Therefore, cell search of a user equipment can be more effectively performed.
    Type: Grant
    Filed: December 17, 2008
    Date of Patent: November 27, 2012
    Assignee: LG Electronics Inc.
    Inventors: Seung Hee Han, Ki Ho Nam, Min Seok Noh, Jin Sam Kwak, Hyun Woo Lee, Dong Cheol Kim, Seong Ho Moon, Sung Gu Cho, Yeong Hyeon Kwon
  • Publication number: 20120294252
    Abstract: The present invention relates to a method in which a terminal transmits uplink control information in a wireless communication system using multiple carriers. The method comprises the following steps: receiving, from a base station, indication information that indicates whether or not to use multiple uplink control resources; determining a first uplink control resource on the basis of a specific control channel element (CCE) index of the CCE received from the base station; and, if the indication information indicates to use multiple uplink control resources, applying a predetermined rule to the specific CCE index to determine a second uplink control resource.
    Type: Application
    Filed: February 25, 2011
    Publication date: November 22, 2012
    Inventors: Yeong Hyeon Kwon, So Yeon Kim, Sung Ho Moon, Jae Hoon Chung, Seung Hee Han