Patents by Inventor Hyeon KWON

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).

  • METHOD AND APPARATUS FOR TRANSMITTING AN UPLINK OR DOWNLINK GRANT IN A WIRELESS COMMUNICATION SYSTEM THAT SUPPORTS UPLINK AND DOWNLINK MIMO SCHEMES
    Publication number: 20120230291
    Abstract: The present invention relates to a method for transmitting an uplink or downlink grant in a wireless communication system that supports uplink and downlink multiple input multiple output (MIMO) schemes. The method comprises: determining a downlink control information (DCI) format for an uplink or downlink grant to generate control information: attaching a cyclic redundancy check (CRC) for detecting an error in the created control information; and channel-coding the CRC-attached control information, wherein the control information comprises a bit flag for distinguishing whether the grant is an uplink grant or a downlink grant.
    Type: Application
    Filed: December 16, 2010
    Publication date: September 13, 2012
    Inventors: Seung Hee Han, So Yeon Kim, Sung Ho Moon, Yeong Hyeon Kwon, Hyun Soo Ko, Jae Hoon Chung, Min Seok Noh, Moon II Lee
  • Method for signal mapping and signal transmission with subcarrier shift schemes
    Patent number: 8264945
    Abstract: A signal mapping method and a signal transmission method applying a subcarrier shift method are described. A signal mapping method using shifted subcarriers includes shifting positions of data subcarriers by as much as a frequency band corresponding to half of spacing between data subcarriers on a frequency axis, and shifting positions of random access preamble subcarriers by as much as a frequency band corresponding to half of spacing between the data subcarriers and to a specific ratio of spacing between the random access preamble subcarriers, and mapping data and a random access preamble to the data subcarriers and the random access preamble subcarrier, respectively. Even when the spacing between the data subcarriers is a multiple of the spacing between the random access preamble subcarriers, DC distortion can be minimized.
    Type: Grant
    Filed: October 15, 2008
    Date of Patent: September 11, 2012
    Assignee: LG Electronics Inc.
    Inventors: Dragan Vujcic, Hyun Woo Lee, Seung Hee Han, Min Seo Hon, Jin Sam Kwak, Dong Cheol Kim, Yeong Hyeon Kwon
  • Method for setting cyclic shift considering frequency offset
    Patent number: 8259844
    Abstract: A method for a user equipment to transmit a random access preamble sequence to a base station includes transmitting the random access preamble sequence generated from a Constant Amplitude Zero Auto Correlation (CAZAC) sequence to the base station, wherein the CAZAC sequence is cyclic shifted according to one of applicable cyclic shift values defined considering a value (M) representing a Doppler shift of one subcarrier spacing and a cyclic shift unit length (T), and wherein when the value (M) meets a condition of ‘P*T?M <(P+1)*T’ where (P) is an integer, one or more adjacent cyclic shift values among the applicable cyclic shift values are defined as a group and a number of the adjacent cyclic shift values within the group equals to (P).
    Type: Grant
    Filed: October 28, 2011
    Date of Patent: September 4, 2012
    Assignee: LG Electronics Inc.
    Inventors: Hyun Woo Lee, Min Seok Noh, Yeong Hyeon Kwon, Seung Hee Han, Dong Cheol Kim, Jin Sam Kwak, Dragan Vujcic
  • TRANSMISSION METHOD OF DOWNLINK SIGNAL IN WIRELESS COMMUNICATION SYSTEM AND TRANSMISSION APPARATUS THEREFOR
    Publication number: 20120218952
    Abstract: The present invention provides a method for a base station to transmit a downlink signal in a wireless communication system, the method comprising: allocating a resource to a downlink signal; and transmitting the downlink signal using the allocated resource. In the downlink signal transmission method and apparatus thereof, a resource for transmitting a Physical Downlink Shared Channel (PDSCH) among the downlink signals is allocated from a specific OFDM symbol that is fixed within a subframe.
    Type: Application
    Filed: August 23, 2010
    Publication date: August 30, 2012
    Applicant: LG ELECTRONICS INC.
    Inventors: Yeong Hyeon Kwon, So Yeon Kim, Sung Ho Moon, Jae Hoon Chung, Seung Hee Han
  • METHOD OF TRANSMITTING CONTROL SIGNALS IN WIRELESS COMMUNICATION SYSTEM
    Publication number: 20120213176
    Abstract: A method of transmitting control signals in a wireless communication system includes multiplexing a first control signal with a second control signal in a slot, the slot comprising a plurality of orthogonal frequency division multiplexing (OFDM) symbols in time domain, the plurality of OFDM symbols being divided into a plurality of data OFDM symbols and a plurality of reference signal (RS) OFDM symbols, wherein the first control signal is mapped to the plurality of data OFDM symbols after the first control signal is spread by a base sequence in the frequency domain, the RS is mapped to the plurality of RS OFDM symbols, the second control signal is mapped to at least one of the plurality of RS OFDM symbols, and transmitting the first control signal and the second control signal in the slot.
    Type: Application
    Filed: April 27, 2012
    Publication date: August 23, 2012
    Inventors: Jin Sam Kwak, Seung Hee Han, Min Seok Noh, Yeong Hyeon Kwon, Hyun Woo Lee, Dong Cheol Kim
  • METHOD OF TRANSMITTING SCHEDULING REQUEST IN A WIRELESS COMMUNICATION SYSTEM
    Publication number: 20120213193
    Abstract: A method and apparatus for requesting uplink resources in a wireless communication system is provided. A user equipment determines whether a scheduling request for requesting uplink resources is triggered. If the scheduling request is triggered, the user equipment transmits a first set of frequency domain sequences and a second set of frequency domain sequences in a subframe.
    Type: Application
    Filed: April 17, 2012
    Publication date: August 23, 2012
    Inventors: Yeong Hyeon Kwon, Seung Hee Han, Hyun Woo Lee, Jae Hoon Chung, Jin Sam Kwak, Dong Cheol Kim, Min Seok Noh
  • POWER-SAVING METHOD IN A WIRELESS COMMUNICATION SYSTEM
    Publication number: 20120201182
    Abstract: The present invention relates to a power-saving method in a wireless communication system. In a power-saving method for a terminal of a wireless communication system according to one aspect of the present invention, the terminal receives configuration information relating to power-saving from a base station and operates in a power-down mode in which receive processing is not carried out in accordance with the configuration information relating to power saving; and the configuration information comprises at least one or other of information relating to a time point at which the base station is not transmitting packets to the terminal and a time point at which the base station is transmitting packets to the terminal.
    Type: Application
    Filed: June 23, 2010
    Publication date: August 9, 2012
    Applicant: LG Electronics Inc.
    Inventors: Yeong Hyeon Kwon, Han Gyu Cho, Sung Ho Moon, Kyu Jin Park, Seung Hee Han, Jae Hoon Chung
  • Method of communication using frame
    Patent number: 8238300
    Abstract: A device and method for communicating by a mobile communication terminal in communication with a base station. The method according to an embodiment includes exchanging a frame of data with the base station. The frame of data includes a) a plurality of first subframes each having a first number of orthogonal frequency division multiple access (OFDMA) symbols, and b) a plurality of second subframes each having a second number of orthogonal frequency division multiple access (OFDMA) symbols different from the first number.
    Type: Grant
    Filed: February 17, 2009
    Date of Patent: August 7, 2012
    Assignee: LG Electronics Inc.
    Inventors: Sungho Moon, Minseok Noh, Yeong Hyeon Kwon, Jin Sam Kwak, Dong Cheol Kim, Seung Hee Han, Hyun Woo Lee
  • Method of generating random access preambles in wireless communication system
    Patent number: 8234325
    Abstract: A method of generating random access preambles includes receiving information on a source logical index and generating random access preambles in the order of increasing cyclic shift from root ZC sequences with the consecutive logical indexes from the beginning of the source logical index until a predetermined number of the random access preambles are found, wherein the consecutive logical indexes are mapped to root indexes of the root ZC sequences.
    Type: Grant
    Filed: March 17, 2008
    Date of Patent: July 31, 2012
    Assignee: LG Electronics Inc.
    Inventors: Hyun Woo Lee, Seung Hee Han, Min Seok Noh, Jin Sam Kwak, Dragan Vujcic, Dong Cheol Kim, Yeong Hyeon Kwon
  • METHOD AND DEVICE FOR SENDING AND RECEIVING CONTROL DATA ON A WIRELESS COMMUNICATIONS SYSTEM
    Publication number: 20120188959
    Abstract: The present invention relates to a method and device for sending and receiving control data on a wireless communications system employing an aggregated carrier arrangement. In a method for transmitting control data on a wireless communications system supporting carrier aggregation according to one aspect of the present invention, a base station transmits, to a mobile station, information relating to physical cell ID (physical cell identification, hereinafter “PCI”) for use in uplink signal transmission, and receives an uplink signal generated from the mobile station using the PCI.
    Type: Application
    Filed: July 9, 2010
    Publication date: July 26, 2012
    Inventors: So Yeon Kim, Jae Hoon Chung, Yeong-Hyeon Kwon, Seung Hee Han
  • CONTROL INFORMATION TRANSMISSION AND RECEIVING METHOD FOR GROUP COMMUNICATION IN WIRELESS COMMUNICATION SYSTEM
    Publication number: 20120190394
    Abstract: The present invention relates to a method for transmitting and receiving control information for group communications in a wireless communication system. According to one aspect of the present invention, a control information transmission method for group communication in a wireless communication system comprises the steps of, a base station: receiving a group communication request from one or more terminals; determining a plurality of terminals which will perform the group communication; allocating resources which are to be used for performing the group communication; and transmitting information on the plurality of terminals and resource allocation information on the resources which are to be used, to the one or more terminals among the plurality of terminals.
    Type: Application
    Filed: June 15, 2010
    Publication date: July 26, 2012
    Inventors: Yeong Hyeon Kwon, Han Gyu Cho, Jin Sam Kwak, Jae Hoon Chung, Sung Ho Moon
  • Sequence generation and transmission method based on time and frequency domain transmission unit
    Patent number: 8228782
    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: Grant
    Filed: December 21, 2007
    Date of Patent: July 24, 2012
    Assignee: LG Electronics Inc.
    Inventors: Seung Hee Han, Min Seok Noh, Yeong Hyeon Kwon, Hyun Woo Lee, Dong Cheol Kim, Jin Sam Kwak
  • METHOD AND APPARATUS FOR TRANSCEIVING DATA IN A WIRELESS COMMUNICATION SYSTEM
    Publication number: 20120182959
    Abstract: The present invention relates to a method and apparatus for transceiving data in a wireless communication system. A method for receiving data in a wireless communication system according to one aspect of the present invention is configured such that a base station receives, from a mobile station, a signal including information and data on the transmission mode which the mobile station has selected in accordance with a channel status, and decodes the data in accordance with the transmission mode.
    Type: Application
    Filed: June 18, 2010
    Publication date: July 19, 2012
    Applicant: LG ELECTRONICS INC.
    Inventors: Yeong Hyeon Kwon, Dragan Vujcic, Sung Ho Moon, Seung Hee Han, Jae Hoon Chung
  • Method of communication using frame
    Patent number: 8223857
    Abstract: A device and method for communicating by a mobile communication terminal in communication with a base station. The method according to an embodiment includes exchanging a frame of data with the base station. The frame of data includes a) a plurality of first subframes each having a first number of orthogonal frequency division multiple access (OFDMA) symbols, and b) a plurality of second subframes each having a second number of orthogonal frequency division multiple access (OFDMA) symbols different from the first number. One of the second subframes includes an idle symbol.
    Type: Grant
    Filed: February 17, 2009
    Date of Patent: July 17, 2012
    Assignee: LG Electronics Inc.
    Inventors: Sungho Moon, Minseok Noh, Yeong Hyeon Kwon, Jin Sam Kwak, Dong Cheol Kim, Seung Hee Han, Hyun Woo Lee
  • REPEATER FOR RECEIVING SIGNALS FROM A BASE STATION IN A WIRELESS COMMUNICATION SYSTEM, AND SIGNAL RECEIVING METHOD
    Publication number: 20120178360
    Abstract: Disclosed are a repeater for receiving signals from a base station in a wireless communication system, and a signal receiving method. The base station reports, to each repeater, information on the aggregation level of a relay-control channel element (R-CCE) of a relay-physical downlink control channel (R-PDCCH) via an explicit signaling method or implicit signaling method. In the event the base station reports via an explicit signaling method, the repeater receives, from the base station, information on the aggregation level of R-CCE which is a transmission unit of R-PDCCH, wherein the information contains control information for the repeater. Then, the repeater decodes an R-PDCCH region on an R-CCE aggregation level basis in accordance with the received R-CCE aggregation level information.
    Type: Application
    Filed: September 17, 2010
    Publication date: July 12, 2012
    Applicant: LG ELECTRONICS INC.
    Inventors: Kyu Jin Park, Sung Ho Moon, Yeong Hyeon Kwon, Jae Hoon Chung
  • Method of transmitting data in a mobile communication system
    Patent number: 8218481
    Abstract: Disclosed is a data transmission method in a mobile communication system. The data transmission method through a code sequence in a mobile communication system includes grouping input data streams into a plurality of blocks consisting of at least one bit so as to map each block to a corresponding signature sequence, multiplying a signature sequence stream, to which the plurality of blocks are mapped, by a specific code sequence, and transmitting the signature sequence stream multiplied by the specific code sequence to a receiver.
    Type: Grant
    Filed: June 8, 2007
    Date of Patent: July 10, 2012
    Assignee: LG Electronics Inc.
    Inventors: Yeong Hyeon Kwon, Seung Hee Han, Hyun Hwa Park, Dong Cheol Kim, Hyun Woo Lee, Min Seok Noh
  • METHOD OF PERFORMING CELL SEARCH IN WIRELESS COMMUNICATION SYSTEM
    Publication number: 20120170520
    Abstract: A method of performing cell search includes receiving a primary synchronization signal (PSS) comprising a primary synchronization code (PSC) and receiving a secondary synchronization signal (SSS) comprising a first secondary synchronization code (SSC) and a second SSC, wherein the SSS includes a first SSS and a second SSS, the first SSC and the second SSC are arranged in that order in the first SSS, and the second SSC and the first SSC are arranged in that order in the second SSS. Detection performance on synchronization signals can be improved, and cell search can be performed more reliably.
    Type: Application
    Filed: March 7, 2012
    Publication date: July 5, 2012
    Inventors: Seung Hee Han, Min Seok Noh, Yeong Hyeon Kwon, Hyun Woo Lee, Dong Cheol Kim, Jin Sam Kwak
  • Method for eliminating noise from image generated by image sensor
    Patent number: 8213738
    Abstract: A method for eliminating noise from an image generated by an image sensor, includes: setting a group of pixels arranged in a square matrix and including a central pixel intended to eliminate the noise in the image and peripheral pixels arranged around the central pixel; obtaining absolute difference values between a luminance value of the central pixel and a luminance value of the peripheral pixels according to directionalities of the peripheral pixels about the central pixel; comparing the obtained absolute difference values with first critical values to determine a region to which the central pixel belongs; when the determined region is the contour region, eliminating noise of the group of the pixels according to directionality of the contour; and when the determined region is the noise region, eliminating the noise of the group of the pixels according to a noise level of the group of the pixels.
    Type: Grant
    Filed: August 22, 2008
    Date of Patent: July 3, 2012
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Tae Hyeon Kwon, Hak Sun Kim, Won Tae Choi
  • SEQUENCE GENERATING METHOD FOR EFFICIENT DETECTION AND METHOD FOR TRANSMITTING AND RECEIVING SIGNALS USING THE SAME
    Publication number: 20120163348
    Abstract: A sequence generation method for allowing a reception end to effectively detect a sequence used for a specific channel of an OFDM communication system, and a signal transmission/reception method using the same are disclosed. During the sequence generation, an index is selected from among the index set having the conjugate symmetry property between indexes, and a specific part corresponding to the frequency “0” is omitted from a transmitted signal. In addition, a reception end can calculate a cross-correlation value between a received (Rx) signal and each sequence using only one cross-correlation calculation based on the conjugate symmetry property.
    Type: Application
    Filed: December 21, 2011
    Publication date: June 28, 2012
    Applicant: LG ELECTRONICS INC.
    Inventors: Seung Hee HAN, Min Seok NOH, Yeong Hyeon KWON, Hyun Woo LEE, Dong Cheol KIM, Jin Sam KWAK
  • METHOD AND APPARATUS FOR TRANSMITTING REFERENCE SIGNAL IN TIME DIVISION DUPLEX SYSTEM
    Publication number: 20120155338
    Abstract: A method and apparatus of transmitting a reference signal in a time division duplex (TDD) system is provided. A base station (BS) generates a plurality of demodulation reference signals (DMRSs) for respective layers, maps the plurality of DMRSs to a downlink pilot time slot (DwPTS) region for downlink transmission within a special subframe; and transmits the plurality of DMRSs through a plurality of antennas. The special subframe is a subframe for separating uplink and downlink between an uplink (UL) subframe and a downlink (DL) subframe within a frame.
    Type: Application
    Filed: September 13, 2010
    Publication date: June 21, 2012
    Inventors: Min Seok Noh, Jae Hoon Chung, Han Gyu Cho, Yeong Hyeon Kwon