Patents by Inventor Dong Cheol Kim

Dong Cheol Kim 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 information transmission in a radio communication system
    Patent number: 8873673
    Abstract: A method of transmitting, by a transmitter, information in a wireless communication system, the method includes generating first and second symbols; generating first and second transmit vectors on the basis of an Alamouti code from the first and second symbols; and transmitting the first transmit vector through a first antenna and transmitting the second transmit vector through a second antenna. The first transmit vector consists of a first transmit symbol and a second transmit symbol. The second transmit vector consists of a third transmit symbol and a fourth transmit symbol. The first, second, third, and fourth transmit symbols are transmitted based on first and second resource indexes. The first symbol is a first modulation symbol for first information, and the second symbol is a second modulation symbol for second information.
    Type: Grant
    Filed: November 26, 2013
    Date of Patent: October 28, 2014
    Assignee: LG Electronics Inc.
    Inventors: Seung Hee Han, Moon II Lee, Yeong Hyeon Kwon, Hyun Soo Ko, Ja Ho Koo, Dong Cheol Kim, Jae Hoon Chung, Sung Ho Moon, Jin Sam Kwak, Min Seok Noh, Hyun Woo Lee
  • Method of transmitting control signals in wireless communication system
    Patent number: 8861330
    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: Grant
    Filed: September 24, 2013
    Date of Patent: October 14, 2014
    Assignee: LG Electronics Inc.
    Inventors: Jin Sam Kwak, Seung Hee Han, Min Seok Noh, Yeong Hyeon Kwon, Hyun Woo Lee, Dong Cheol Kim
  • Random access method and signalling method for the same
    Patent number: 8861473
    Abstract: A method for generating an iterative sequence and a signal transmission method using the same are disclosed. As the cell size or the distance between a user equipment (UE) and a Node-B increases, the CP is repeated at least one time while the iterative sequence is generated, the CP length and the ZCZ length are adjusted, so that the sequence timing point can be easily detected, orthogonality between sequences is maintained, and the sequences can be clearly distinguished from each other.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: October 14, 2014
    Assignee: LG Electronics Inc.
    Inventors: Min Seok Noh, Seung Hee Han, Yeong Hyeon Kwon, Hyun Hwa Park, Hyun Woo Lee, Dong Cheol Kim
  • SYMBOL MAPPING METHOD FOR REPETITION CHANNEL CODING
    Publication number: 20140293956
    Abstract: A symbol mapping method for repetition coding is disclosed. The symbol mapping method comprises performing repetition coding on codeword to output repeated codeword symbols, and mapping the repeated codeword symbols with subcarriers located in different localized resource blocks. According to the embodiments of the present invention, it is possible to obtain maximum reliability in a receiving side by mapping codeword bits with subcarriers to reduce the number of bits having low reliability when a transmitting side uses repetition coding. Also, it is possible to improve decoding throughput and obtain channel diversity.
    Type: Application
    Filed: June 17, 2014
    Publication date: October 2, 2014
    Inventors: Yeong Hyeon KWON, Seung Hee HAN, Hyun Woo LEE, Sung Ho MOON, Jin Sam KWAK, Dong Cheol KIM, Min Seok NOH
  • Method and apparatus for the transmission of a control signal in a radio communication system
    Patent number: 8848629
    Abstract: The present invention provides a method and an apparatus for the transmission of control signal in a radio communication system. The method includes the steps of processing first control information on the basis of a first resource index to create a first control signal, processing second control information on the basis of a second resource index to create a second control signal, and transmitting the first control signal and the second control signal.
    Type: Grant
    Filed: August 11, 2009
    Date of Patent: September 30, 2014
    Assignee: LG Electronics Inc.
    Inventors: Seung Hee Han, Moon Il Lee, Yeong Hyeon Kwon, Hyun Soo Ko, Ja Ho Koo, Dong Cheol Kim, Jae Hoon Chung, Sung Ho Moon, Jin Sam Kwak, Min Seok Noh, Hyun Woo Lee
  • Method of communication using frame
    Patent number: 8837518
    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. A first and a last subframe each includes one of the plurality of first subframes.
    Type: Grant
    Filed: October 4, 2011
    Date of Patent: September 16, 2014
    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 for controlling uplink power control considering multiplexing rate/ratio
    Patent number: 8830904
    Abstract: A method for maintaining system interference at a low level when two or more users use one resource region in a wireless mobile communication system is provided. To control an uplink transmission power in a broadband wireless mobile communication system in multi-cell environments, information regarding the number of users who share an uplink time-frequency resource region is received from a base station, a power adjustment value is calculated based on the received number of users, and the uplink transmission power is determined by reflecting the calculated power adjustment value in a reference transmission power. Here, when only one mobile station uses the uplink time-frequency resource region, the reference transmission power is equal to a transmission power of the mobile station.
    Type: Grant
    Filed: December 12, 2008
    Date of Patent: September 9, 2014
    Assignee: LG Electronics Inc.
    Inventors: Dong Cheol Kim, Bin Chul Ihm, Jin Sam Kwak, Wook Bong Lee
  • Method of generating code sequence and method of transmitting signal using the same
    Patent number: 8830983
    Abstract: A method of generating a code sequence and method of adding additional information using the same are disclosed, by which a code sequence usable for a channel for synchronization is generated and by which a synchronization channel is established using the generated sequence. The present invention, in which the additional information is added to a cell common sequence for time synchronization and frequency synchronization, includes the steps of generating the sequence repeated in time domain as many as a specific count, masking the sequence using a code corresponding to the additional information to be added, and transmitting a signal including the masked sequence to a receiving end.
    Type: Grant
    Filed: February 23, 2011
    Date of Patent: September 9, 2014
    Assignee: LG Electronics Inc.
    Inventors: Seung Hee Han, Min Seok Noh, Yeong Hyeon Kwon, Young Woo Yun, Hyun Hwa Park, Hyun Woo Lee, Dong Cheol Kim
  • Method for allocating resource for multicast and/or broadcast service data in wireless communication system and an apparatus therefor
    Patent number: 8811255
    Abstract: The present invention relates to a wireless communication system, and more particularly, to a method for allocating a resource for multicast and/or broadcast service data in a wireless communication system and apparatus therefore. The present invention includes the steps of dividing a downlink frequency band into a plurality of frequency partitions, allocating one or more subbands in a certain frequency partition among the plurality of frequency partitions to the MBS data, and c) allocating one or more subbands in each remaining frequency partitions one by one to the MBS data, if the number of subbands required for transmitting the MBS data (KSB,E MBS) is larger than the number of subbands in the certain frequency partition.
    Type: Grant
    Filed: January 14, 2010
    Date of Patent: August 19, 2014
    Assignee: LG Electronics Inc.
    Inventors: Dong Cheol Kim, Jinsoo Choi, Han Gyu Cho, Jin Sam Kwak, Wook Bong Lee
  • Apparatus and method for transmitting data using a plurality of carriers
    Patent number: 8804478
    Abstract: The present invention relates to a data transceiving method in a communication system based on a plurality of carriers, and more particularly, to a method of designing a sequence in a communication system using orthogonal subcarriers. The present invention includes the steps of generating a time-domain sequence with a specific length in a time domain, generating a frequency-domain sequence by performing a DFT or FFT operation on the time-domain sequence according to a length of the generated sequence, including a DC subcarrier and a guard subcarrier in the frequency-domain sequence, and performing an IDFT or IFFT operation on the frequency-domain sequence including the DC subcarrier and the guard subcarrier.
    Type: Grant
    Filed: November 10, 2006
    Date of Patent: August 12, 2014
    Assignee: LG Electronics Inc.
    Inventors: Seung Hee Han, Min Seok Noh, Yeong Hyeon Kwon, Hyun Hwa Park, Hyun Woo Lee, Dong Cheol Kim
  • Method for retransmitting packets according to decoding failures or reliability
    Patent number: 8797972
    Abstract: A method for retransmitting packets in accordance with decoding failure or reliability is disclosed. A method for retransmitting packets from a transmitting side in accordance with information of a receiving side comprises changing an order of packet symbols mapped with subcarriers, if retransmission information representing decoding success or reliability for a specific codeword is received from the receiving side mapping the packet symbols with the subcarriers in accordance with the changed order; and transmitting a codeword generated in accordance with the mapped result to the receiving side. Thus, it is possible to improve packet decoding success probability of the receiving side during initial transmission or retransmission by controlling a type of transmission packets in accordance with feedback information of the receiving side.
    Type: Grant
    Filed: November 6, 2008
    Date of Patent: August 5, 2014
    Assignee: LG Electronics Inc.
    Inventors: Yeong Hyeon Kwon, Hong Won Park, Sung Gu Cho, Ki Ho Nam, Dong Cheol Kim, Jin Sam Kwak, Sung Ho Moon, Hyun Woo Lee, Seung Hee Han, Min Seok Noh
  • Method for transmitting a synchronous channel and an essential control information channel, and femto base station thereof
    Patent number: 8792897
    Abstract: The present invention provides a method for transmitting a synchronous channel and an essential control information channel in a femto base station. The method comprises the steps of: acquiring by the femto base station segment information from a macro base station which overlays the femto base station; discriminating by the femto base station the segment or subcarrier used by the macro base station; and transmitting by the femto base station a synchronous channel and essential control information thereof on the segment or subcarrier different from the segment or subcarrier discriminated in the previous step.
    Type: Grant
    Filed: December 4, 2009
    Date of Patent: July 29, 2014
    Assignee: LG Electronics Inc.
    Inventors: Sung-Ho Moon, Hyun-Woo Lee, Jin-Sam Kwak, Seung-Hee Han, Dong-Cheol Kim
  • Method for communicating with relay station
    Patent number: 8787269
    Abstract: A method for communicating with a relay station is disclosed. The method for communicating with a relay station comprises transmitting resource allocation information of downlink traffic and uplink traffic from a base station to the relay; and transmitting the downlink traffic to the relay by encapsulating the downlink traffic in accordance with the resource allocation information and receiving encapsulated uplink traffic from the relay in accordance with the resource allocation information. It is possible to enable efficient communication through a relay using a minimum interface without deterioration of throughput even in the case that a base station does not know detailed attributes of a relay existing in a system. Also, it is possible to coordinate collision through a master relay in case of a system supporting multi-hop relays.
    Type: Grant
    Filed: November 12, 2008
    Date of Patent: July 22, 2014
    Assignee: LG Electronics Inc.
    Inventors: Yeong Hyeon Kwon, Min Seok Noh, Sung Ho Moon, Dong Cheol Kim, Jin Sam Kwak, Hyun Woo Lee, Seung Hee Han
  • Symbol mapping method for repetition channel coding
    Patent number: 8787492
    Abstract: A symbol mapping method for repetition coding is disclosed. The symbol mapping method comprises performing repetition coding on codeword to output repeated codeword symbols, and mapping the repeated codeword symbols with subcarriers located in different localized resource blocks. According to the embodiments of the present invention, it is possible to obtain maximum reliability in a receiving side by mapping codeword bits with subcarriers to reduce the number of bits having low reliability when a transmitting side uses repetition coding. Also, it is possible to improve decoding throughput and obtain channel diversity.
    Type: Grant
    Filed: January 30, 2013
    Date of Patent: July 22, 2014
    Assignee: LG Electronics Inc.
    Inventors: Yeong Hyeon Kwon, Seung Hee Han, Hyun Woo Lee, Sung Ho Moon, Jin Sam Kwak, Dong Cheol Kim, Min Seok Noh
  • Method and apparatus for transmitting data in a wireless communication system
    Patent number: 8787235
    Abstract: A data transmission method and apparatus in a wireless communication system is provided. The data transmission method include dividing a multicast broadcast single frequency network (MBSFN) zone including a plurality of cells into at least one sub-zone including at least one cell, enabling a plurality of cells belonging to the MBSFN zone to transmit first multicast broadcast service (MBS) data, and enabling the cell belonging to the at least one sub-zone to transmit sub-zone data superposed with the first MBS data, wherein the sub-zone data is second MBS data.
    Type: Grant
    Filed: October 14, 2009
    Date of Patent: July 22, 2014
    Assignee: LG Electronics Inc.
    Inventors: Dong Cheol Kim, Min Seok Noh, Jin Sam Kwak, Seung Hee Han, Yeong Hyeon Kwon
  • Method and apparatus for allocating resources for enhanced multicast broadcast service data in wireless communication system
    Patent number: 8780844
    Abstract: Provided are a method and apparatus for allocating resources for enhanced multicast broadcast service (E-MBS) data in a wireless communication system. A base station divides a frequency region into at least one frequency partition and allocates subbands of KSB,E-MBS number as the resources for the E-MBS data in the frequency partition. One sub-band includes sub-band logical resource units (SLRUs) of N1 number and the SLRUs of N1 number have continuous indexes among a plurality of physical resource units (PRUs) included in the frequency partition and are the PRUs to be allocated to contiguous resource units (CRUs).
    Type: Grant
    Filed: January 11, 2011
    Date of Patent: July 15, 2014
    Assignee: LG Electronics Inc.
    Inventors: Han Gyu Cho, Jin Soo Choi, Dong Cheol Kim
  • SEQUENCE GENERATING METHOD FOR EFFICIENT DETECTION AND METHOD FOR TRANSMITTING AND RECEIVING SIGNALS USING THE SAME
    Publication number: 20140185724
    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: March 4, 2014
    Publication date: July 3, 2014
    Applicant: LG ELECTRONICS INC.
    Inventors: Seung Hee HAN, Min Seok NOH, Yeong Hyeon KWON, Hyun Woo LEE, Dong Cheol KIM, Jin Sam KWAK
  • METHOD OF MAPPING PHYSICAL RESOURCE TO LOGICAL RESOURCE IN WIRELESS COMMUNICATION SYSTEM
    Publication number: 20140177554
    Abstract: A method of mapping a physical resource to a logical resource in a wireless communication system is described. The method includes dividing a physical frequency band into at least one frequency partition. Each frequency partition is divided into a localized region and a distributed region in a frequency domain. The method further includes mapping the at least one frequency partition into at least one logical resource unit. The localized region is directly mapped into the logical resource unit and the distributed region is mapped into the logical resource unit after rearranging subcarriers within the distributed region.
    Type: Application
    Filed: December 16, 2013
    Publication date: June 26, 2014
    Applicant: LG ELECTRONICS INC.
    Inventors: Jin Sam KWAK, Hong Won PARK, Sung Gu CHO, Ki Ho NAM, Seung Hee HAN, Min Seok NOH, Yeong Hyeon KWON, Hyun Woo LEE, Dong Cheol KIM
  • Method for transmitting ranging information in wireless communication system and terminal thereof
    Patent number: 8750162
    Abstract: Disclosed is a method for configuring a ranging channel in various frame structures and using the same in a communication system. A ranging channel is effectively configured according to a data structure, namely, frame structure, transmitted and received between a mobile station (MS) and a base station (BS) in a wireless communication system, and ranging information is transmitted therethrough to thereby improve performance of a communication channel and resource efficiency. In the wireless communication system, a ranging channel is configured by using a time interval, such as an idle time, an idle symbol, an RTG, a TTG, and the like, not actually used for transmission of data or a signal in a data structure, namely, in a frame structure, transmitted and received between an MS and a BS, to transmit ranging information, so the channel performance and resource efficiency can be improved.
    Type: Grant
    Filed: January 5, 2010
    Date of Patent: June 10, 2014
    Assignee: LG Eletronics Inc.
    Inventors: Hyun-Woo Lee, Min-Seok Noh, Yeong-Hyeon Kwon, Jin-Sam Kwak, Dong-Cheol Kim, Sung-Ho Moon, Seung-Hee Han
  • Method of generating data and transmitting synchronization channel in mobile communication system
    Patent number: 8743855
    Abstract: A method for a transmitting side to transmit a sync channel in a wireless communication system using a multicarrier is disclosed. The present invention includes the steps of generating one synchronization channel including a plurality of sub-synchronization channels and the generated multicarrier symbol to a receiving side via the synchronization channel. Accordingly, the present invention enables the transmitting side to efficiently use a radio resource, thereby raising data transmission efficiency of synchronization channel.
    Type: Grant
    Filed: March 11, 2009
    Date of Patent: June 3, 2014
    Assignee: LG Electronics Inc.
    Inventors: Seung Hee Han, Yeong Hyeon Kwon, Jin Sam Kwak, Dong Cheol Kim, Sung Ho Moon, Min Seok Noh, Hyun Woo Lee