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).

  • Patent number: 8040789
    Abstract: A method for uplink transmission in an OFDMA system is provided. The subcarrier transmission method includes arranging 4 pilot REs at different positions of a frequency axis in a basic unit when the basic unit includes 4 subcarriers on the frequency axis and 6 OFDM(A) symbols in a time axis, arranging data REs at remaining positions of the basic unit, and transmitting the basic unit to a receiving end.
    Type: Grant
    Filed: February 18, 2009
    Date of Patent: October 18, 2011
    Assignee: LG Electronics Inc.
    Inventors: Min Seok Noh, Yeong Hyeon Kwon, Sung Ho Moon, Jin Sam Kwak, Dong Cheol Kim, Seung Hee Han, Hyun Woo Lee, Jin Soo Choi
  • Patent number: 8040827
    Abstract: A method of transmitting subframe designating information in downlink in a wireless communication system is disclosed. The present invention includes generating the subframe designating information for designating a subframe of a specific type in a radio frame and transmitting the generated subframe designating information to a user equipment, wherein the subframe designating information includes initial location information indicating an initial location of the subframe of the specific type on the radio frame and period information indicating a period for the subframe of the specific type to be repeated.
    Type: Grant
    Filed: November 11, 2009
    Date of Patent: October 18, 2011
    Assignee: LG Electronics Inc.
    Inventors: Yeong Hyeon Kwon, Min Seok Noh, Kyu Jin Park, Jae Hoon Chung, Seung Hee Han
  • Patent number: 8036256
    Abstract: A method of generating a code sequence in a wireless communication system is disclosed. More specifically, the method includes recognizing a desired length of the code sequence, generating a code sequence having a length different from the desired length, and modifying the length of the generated code sequence to equal the desired length. Here, the step of modifying includes discarding at least one element of the generated code sequence or inserting at least one null element to the generated code sequence.
    Type: Grant
    Filed: May 11, 2010
    Date of Patent: October 11, 2011
    Assignee: LG Electronics Inc.
    Inventors: Seung Hee Han, Min Seok Noh, Yeong Hyeon Kwon, Hyun Hwa Park, Hyun Woo Lee, Dong Cheol Kim
  • Publication number: 20110235608
    Abstract: Disclosed is a channel estimation method using a cooperative multi-point (CoMP) reference signal in a multi-cell environment. The method comprises a CoMP reference signal receiving step of enabling a terminal to receive, from each of the cells that perform a CoMP operation, a CoMP reference signal where an orthogonal code is applied to each of the cells; a channel estimation step of enabling the terminal to estimate, using said CoMP reference signal, channels of each of the cells which perform said CoMP operation; and a channel status feedback information transmitting step of enabling the terminal to transmit channel status feedback information to each of the cells.
    Type: Application
    Filed: November 10, 2009
    Publication date: September 29, 2011
    Inventors: Ja Ho Koo, Yeong Hyeon Kwon, Su Nam Kim, Jae Hoon Chung, Moon II Lee, Hyun Soo Ko
  • Publication number: 20110228709
    Abstract: The present invention provides a method and an apparatus of relaying data in a wireless communication system based on Time Division Duplex (TDD). A relay station receives downlink data from a base station in an uplink subframe and relays the downlink data to at least one mobile station. Accordingly, the efficiency of resource allocation for a relay station can be improved.
    Type: Application
    Filed: November 2, 2009
    Publication date: September 22, 2011
    Inventors: Byoung Hoon Kim, Yeong Hyeon Kwon, Han Byul Seo, Jae Hoon Chung, Young Woo Yun, Dae Won Lee
  • Publication number: 20110228748
    Abstract: The present invention provides a method and an apparatus for transmitting data in a radio communication system. Said method for transmitting data in a radio communication system in which a radio resource for data transmission includes a plurality of data symbols in a time domain, wherein said method comprises the steps of transmitting first data using a space-time block coding (STBC) scheme via a portion of the data symbols from among the plurality of data symbols; and transmitting second data using a cyclic delay diversity (CDD) scheme via the residual data symbols excluding said portion of data symbols.
    Type: Application
    Filed: November 18, 2009
    Publication date: September 22, 2011
    Inventors: Seung Hee Han, Jae Hoon Chung, Yeong Hyeon Kwon, Hyun Soo Ko, Min Seok Noh, Moon Il Lee
  • Publication number: 20110228722
    Abstract: A method of transmitting a reference signal performed by a Relay Station (RS) in a wireless communication system comprises allocating a guard time in the front of a backhaul subframe or the end of the backhaul subframe, the backhaul subframe comprising a plurality of slots, each of the plurality of slots comprising a plurality of Orthogonal Frequency Division Multiplexing (OFDM) symbols, and the guard time being a time interval for switching between an access link and a backhaul link, and transmitting a Demodulation Reference Signal (DMRS) to a Base Station (BS) in an OFDM symbol of the backhaul subframe. The OFDM symbol for the DMRS is not over-lapped with the guard time.
    Type: Application
    Filed: December 10, 2009
    Publication date: September 22, 2011
    Inventors: Min Seok Noh, Kyu Jin Park, Jae Hoon Chung, Sung Ho Moon, Seung Hee Han, Yeong Hyeon Kwon
  • Publication number: 20110223953
    Abstract: An apparatus for direct communication in a wireless communication system and method thereof are disclosed, by which a communication is efficiently enabled with a low power. In performing a direct communication in a first terminal of a wireless communication system, the present invention includes receiving a resource allocation information on a resource allocated to the direct communication from a base station and performing the direct communication with a second terminal using the allocated resource. In this case, the allocated resource is defined in either an uplink resource region of the base station or a downlink resource region of the base station and the allocated resource is divided into a transmission region for the direct communication and a receipt region for the direct communication.
    Type: Application
    Filed: March 10, 2011
    Publication date: September 15, 2011
    Inventors: Hyun Woo Lee, Han Gyu Cho, Yeong Hyeon Kwon
  • Publication number: 20110222393
    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: March 17, 2011
    Publication date: September 15, 2011
    Inventors: Jin Sam Kwak, Seung Hee Han, Min Seok Noh, Yeong Hyeon Kwon, Hyun Woo Lee, Dong Cheol Kim
  • Publication number: 20110222507
    Abstract: A method for resource reservation in a wireless communication system is provided. A plurality of physical resource units (PRUs) is provided and a reserved region is reserved. The reserved region is greater than or equal to a frequency band size of a subband which is a unit of contiguous PRUs in a frequency domain among the plurality of PRUs.
    Type: Application
    Filed: December 29, 2009
    Publication date: September 15, 2011
    Inventors: Hyun Woo Lee, Yeong Hyeon Kwon, Jin Sam Kwak, Dong Cheol Kim, Seung Hee Han
  • Publication number: 20110216733
    Abstract: Provided are a method of information transmission performed by a transmitter in a wireless transmission system and an apparatus for same.
    Type: Application
    Filed: November 16, 2009
    Publication date: September 8, 2011
    Inventors: Seung Hee Han, Sung Ho Moon, Hyun Soo Ko, Jae Hoon Chung, Moon II Lee, Yeong Hyeon Kwon
  • Publication number: 20110211489
    Abstract: Disclosed is a communication method in a multi-carrier system, including: allocating radio resources for transmitting signals to a middle guard band; and transmitting the signals through the radio resources; wherein the middle guard band is a frequency band positioned between used bands of a plurality of carriers, respectively, within an aggregated carrier formed by aggregating the plurality of carriers and a unit allocating the radio resources of the middle guard band is different from a unit allocating the radio resources of the used bands. A multi-carrier system uses the guard bands between the carriers to improve channel estimation performance or increase efficiency of radio resources.
    Type: Application
    Filed: November 3, 2009
    Publication date: September 1, 2011
    Inventors: Jae Hoon Chung, Min Seok Noh, Yeong Hyeon Kwon, Seung Hee Han, So Yeon Kim
  • Publication number: 20110211522
    Abstract: A method of performing hybrid automatic repeat request (HARQ) by a source station in a wireless communication system is provided. The method includes: transmitting data to a destination station at a transmission start time; receiving an acknowledgment (ACK) or negative-acknowledgement (NACK) signal for the data from the destination station after a first transmission time interval elapses from the transmission start time; and upon receiving the NACK signal, retransmitting the data after a second transmission time interval elapses from the transmission start time, wherein the second transmission time interval is one transmission time interval selected from a plurality of predetermined transmission time intervals. Accordingly, the wireless communication system can perform a heterogeneous HARQ process in which an HARQ period, an ACK/NACK transmission start time, and the like are different.
    Type: Application
    Filed: October 30, 2009
    Publication date: September 1, 2011
    Inventors: Jae Hoon Chung, So Yeon Kim, Kyu Jin Park, Seung Hee Han, Yeong Hyeon Kwon
  • Publication number: 20110211488
    Abstract: The present invention relates to a method for determining the transmission mode in a wireless communication system. More specifically, the present invention relates to a method for transmission mode determination in a wireless communication system, comprising a step wherein feedback information regarding channel status is received, and a step wherein it is determined based on said feedback information whether a transmission signal will be transmitted via each of a fixed number of subcarriers, after applying a propagation sequence.
    Type: Application
    Filed: October 26, 2009
    Publication date: September 1, 2011
    Inventors: Yeong Hyeon Kwon, Seung Hee Han, Hyun Woo Lee, Sung Ho Moon, Jin Sam Kwak, Dong Cheol Kim, Min Seok Noh
  • Patent number: 8009764
    Abstract: A method and apparatus for diminishing a peak power to average power ratio (PAPR) in an OFDM/OFDMA communication system are disclosed, by which complexity in an OFDM/OFDMA communication system can be reduced. In an OFDM or OFDMA communication system, the present invention includes a circular shift module circularly shifting to output at least one or more data sequences according to circular shift information to be applied to each of the at least one or more data sequences converted to a time domain from a frequency domain, a combining module combining the at least one or more data sequences outputted from the circular shift module, and a PAPR calculating module calculating the PAPR of an entire data sequence combined by the combining module.
    Type: Grant
    Filed: November 9, 2006
    Date of Patent: August 30, 2011
    Assignee: LG Electronics Inc.
    Inventors: Yeong Hyeon Kwon, Seung Hee Han, Min Seok Noh, Young Woo Yun
  • Publication number: 20110206000
    Abstract: The present invention relates to an access method for solving ambiguity between an initial access mobile station and a base station, wherein the ambiguity occurs in a carrier aggregation environment. When a base station transmits a downlink message including different downlink ID information through plural downlink carriers, a base station obtains the corresponding downlink ID information through a downlink carrier used by the mobile station. The mobile station transmits an uplink message using the obtained downlink ID information, and the base station extracts the downlink ID information from the uplink message in order to confirm which downlink carrier the mobile station uses.
    Type: Application
    Filed: October 29, 2009
    Publication date: August 25, 2011
    Inventors: Yeong Hyeon Kwon, Min Seok Noh, Jin Sam Kwak, Jae Hoon Chung, Seung Hee Han
  • Publication number: 20110205996
    Abstract: A method of transport block retransmission in a wireless communication system employing carrier aggregation is disclosed. A method of retransmitting transport blocks in a base station of a wireless communication system employing carrier aggregation comprises mapping each of a plurality of transport blocks to each of a plurality of component carriers using a first mapping pattern and transmitting the plurality of transport blocks to a mobile station; recognizing that the plurality of transport blocks are not transmitted successfully; and mapping each of the plurality of transport blocks to each of the plurality of component carriers using a second mapping pattern and retransmitting the plurality of transport blocks to the mobile station.
    Type: Application
    Filed: October 14, 2009
    Publication date: August 25, 2011
    Inventors: Ki Hwan Kim, Jae Hoon Chung, Yeong Hyeon Kwon, Seung Hee Han
  • Publication number: 20110205994
    Abstract: A method and apparatus are provided for data transmission using a plurality of resources in a multiple antenna system. An m (m>1) number of bits from each encoded bit are mapped onto a resource to form a plurality of modulation symbols. With respect to said plurality of modulation symbols, spatial processing is performed according to a plurality of resources and a plurality of antennae to generate a plurality of transmission symbols. Each of said plurality of transmission symbols is transmitted via each of the corresponding multiple antennae.
    Type: Application
    Filed: November 13, 2009
    Publication date: August 25, 2011
    Inventors: Seung Hee Han, Jin Sam Kwak, Hyun Soo Ko, Jae Hoon Chung, Moon Il Lee, Yeong Hyeon Kwon
  • Publication number: 20110201371
    Abstract: A method for transmitting a signal to a UE by a BS in a wireless communication system is disclosed. The method includes determining a signal transmission scheme for transmitting a signal to the UE, dividing a basic resource allocation unit, if the signal transmission scheme is CoMP transmission, allocating transmission resources to the UE using the divided basic resource allocation unit, and transmitting the signal to the UE through the allocated transmission resources.
    Type: Application
    Filed: December 14, 2009
    Publication date: August 18, 2011
    Inventors: Yeong Hyeon Kwon, Min Seok Noh, Ja Ho Koo, Jae Hoon Chung, Seung Hee Han
  • Publication number: 20110200143
    Abstract: Disclosed is a method for transmitting a sounding reference signal from a mobile terminal that includes plural antennas. Different plural sounding reference signal sequences that have mutual orthogonality are mapped to each antenna, and then transmitted. Or, the same sounding reference signal sequence is mapped to the plural antennas after precoding or cyclic delay diversity processing, and then transmitted.
    Type: Application
    Filed: September 24, 2009
    Publication date: August 18, 2011
    Inventors: Ja Ho Koo, Seung Hee Han, Moon Il Lee, Hyun Soo Ko, Jae Hoon Chung, Bin Chul Ihm, Yeong Hyeon Kwon