Patents by Inventor Hyeong Geun Park

Hyeong Geun Park 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: 8543151
    Abstract: The present invention relates to a method of generating a downlink frame. The method of generating the downlink frame includes generating a first sequence and a second sequence for identifying cell groups; generating a first scrambling sequence and a second scrambling sequence that are one-to-two mapped to the sequence number of the primary synchronization signal; scrambling the first sequence with the first scrambling sequence and scrambling the second sequence with the second scrambling sequence; and generating a secondary synchronization signal including the scrambled first sequence and second sequence and mapping the secondary synchronization signal to a frequency domain.
    Type: Grant
    Filed: August 10, 2012
    Date of Patent: September 24, 2013
    Assignees: Samsung Electronics Co., Ltd., Electronics and Telecommunications Research Institute
    Inventors: Il Gyu Kim, Young Jo Ko, Hyeong Geun Park, Kap Seok Chang, Hyo Seok Yi, Young-Hoon Kim, Seung Chan Bang, Kyoung Joon Lee
  • Patent number: 8422599
    Abstract: Provided is a method of estimating a symbol. The method may include deriving phase components of input data, applying a second order differentiation to the phase components to obtain a second order differential phase vector, and estimating symbols corresponding to the input data using the second order differential phase vector.
    Type: Grant
    Filed: December 17, 2010
    Date of Patent: April 16, 2013
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Chung Sup Kim, Soo Ho Sohn, Ki Cheol Tae, Hyeong Geun Park, Yong-Seok Choi
  • Patent number: 8411552
    Abstract: Provided are a cell search method, a frame transmission method thereof, and a forward link frame structure thereof.
    Type: Grant
    Filed: November 10, 2006
    Date of Patent: April 2, 2013
    Assignees: Samsung Electronics Co., Ltd, Electronics and Telecommunications Research Institute
    Inventors: Il-Gyu Kim, Nam-Il Kim, Hyeong-Geun Park, Kap-Seok Chang, Young-Hoon Kim, Seung-Chan Bang
  • Patent number: 8406218
    Abstract: A method of and an apparatus therefor searching a cell in a mobile station of a communication system in which a plurality of cells are grouped into a plurality of cell groups, and each cell group includes at least two cells. The method includes detecting a primary synchronization signal and a secondary synchronization signal from a received signal, and identifying a cell based on a combination of the primary synchronization signal and the secondary synchronization signal. The secondary synchronization signal is related to the cell group to which the mobile station belongs and the primary synchronization signal is related to the cell to which the mobile station belongs within the cell group.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: March 26, 2013
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Il-Gyu Kim, Hyeong-Geun Park, Young-Jo Ko, Kapseok Chang, Hyoseok Yi, Young-Hoon Kim, Seung-Chan Bang
  • Patent number: 8391232
    Abstract: When a plurality of terminals share the same resources in a wireless communication system, and when control information such as acknowledgement/negative acknowledgement (ACK/NAK) information or scheduling information is transmitted, a method of efficiently performing code division multiplexing (CDM) is required to distinguish the plurality of terminals. In particular, it is necessary to develop a method by which a code sequence of CDM can be selected and used according to each cell condition. Provided is a method of forming a signal in a wireless communication system in which a plurality of terminals commonly share frequency and time resources. The method includes the operations of receiving condition information in a cell; selecting one of a plurality of time domain orthogonal sequences having different lengths, according to the condition information; and allocating the selected time domain orthogonal sequence to a control signal symbol block.
    Type: Grant
    Filed: June 23, 2008
    Date of Patent: March 5, 2013
    Assignees: Electronics and Telecommunications Research Institute, KT Corporation
    Inventors: Young-Jo Ko, Hyeong-Geun Park, Il-Gyu Kim, Kapseok Chang, Hyoseok Yi, Young-Hoon Kim, Seung-Chan Bang
  • Patent number: 8391250
    Abstract: When a terminal generates an uplink signal in a communication system, the terminal hops a sequence for differentiating itself from another terminal with time. The terminal generates the uplink signal by multiplying a transmission symbol by a sequence of a transmission time corresponding to the transmission symbol.
    Type: Grant
    Filed: August 31, 2007
    Date of Patent: March 5, 2013
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Hyeong-Geun Park, Il-Gyu Kim, Young-Jo Ko, Kap-Seok Chang, Hyo-Seok Yi, Young-Hoon Kim, Seung-Chan Bang
  • Patent number: 8369300
    Abstract: The present invention relates to a packet data transmission method in an OFDMA system and an apparatus thereof. The present invention provides a user packet data transmission method including generating a RACH burst for channel information estimation, selecting a first antenna among a plurality of antennas, transmitting the RACH burst through the first antenna to a base station, receiving a data transmission acceptance signal from the base station, in response to the RACH burst, transmitting user packet data through the first antenna when receiving a signal indicating that the data transmission is allowed, and selecting a second antenna that is difference from the first antenna and transmitting a RACH burst through the second antenna when receiving a signal indicating that the data transmission is not allowed, and a transmitting apparatus of a mobile station having the plurality of antennas.
    Type: Grant
    Filed: November 17, 2006
    Date of Patent: February 5, 2013
    Assignees: Electronics and Telecommunications Research Institute, SK Telecom., Co., Ltd, KT Corporation
    Inventors: Il-Gyu Kim, Hyeong-Geun Park, Kap-Seok Chang, Young-Hoon Kim, Seung-Chan Bang, Eun-Jeong Shin, Hye-Kyung Jwa, Moon-sik Lee
  • Patent number: 8355464
    Abstract: A downlink frame generation device arrange a plurality of synchronization channel symbols and a plurality of broad-casting channel symbols in a common bandwidth of a system so that the symbols may neighbor each other on the time axis. The downlink frame generation device applies a precoding vector to the synchronization channel symbols and the broadcasting channel symbols to generate a plurality of downlink frames corresponding to a plurality of antennas. The precoding vector is variable by a sector for transmitting a plurality of downlink frames and a subframe in which a plurality of synchronization channel symbols are positioned. The precoding vector is independent of an index of a subcarrier.
    Type: Grant
    Filed: November 16, 2007
    Date of Patent: January 15, 2013
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Kap-Seok Chang, Il-Gyu Kim, Hyeong-Geun Park, Young-Jo Ko, Hyo-Seok Yi, Young-Hoon Kim, Seung-Chan Bang
  • Publication number: 20130010770
    Abstract: A method of and an apparatus therefor searching a cell in a mobile station of a communication system in which a plurality of cells are grouped into a plurality of cell groups, and each cell group includes at least two cells. The method includes detecting a primary synchronization signal and a secondary synchronization signal from a received signal, and identifying a cell based on a combination of the primary synchronization signal and the secondary synchronization signal. The secondary synchronization signal is related to the cell group to which the mobile station belongs and the primary synchronization signal is related to the cell to which the mobile station belongs within the cell group.
    Type: Application
    Filed: September 14, 2012
    Publication date: January 10, 2013
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Il-Gyu KIM, Hyeong-Geun PARK, Young-Jo KO, Kapseok CHANG, Hyoseok YI, Young-Hoon KIM, Seung-Chan BANG
  • Patent number: 8340219
    Abstract: Provided are a receiver and a receiving method for a scalable bandwidth in a mobile station of an Orthogonal Frequency Division Multiplexing (OFDM) system. The receiving method includes the steps of: (a) filtering a received RF signal; (b) oscillating a frequency according to a center frequency control signal to output a local oscillation frequency; (c) down-converting the filtered RF signal by using the local oscillation frequency; (d) scalable-filtering the down-converted signal while adjusting a bandwidth according to a bandwidth control signal; (e) controlling gain of the scalable-filtered signal; (f) converting the gain-controlled analog signal into a digital signal by using a sampling frequency matching with a corresponding bandwidth according to an ADC control signal; and (g) demodulating the converted digital signal, outputting the center frequency control signal, the bandwidth control signal, and the ADC control signal according to control information received from an upper layer.
    Type: Grant
    Filed: October 10, 2007
    Date of Patent: December 25, 2012
    Assignees: Electronics and Telecommunications Research Institute, Samsung Electronics Co., Ltd.
    Inventors: Moon-Sik Lee, Nam-Il Kim, Hyeong-Geun Park, Il-Gyu Kim, Young-Hoon Kim, Seung-Chan Bang
  • Publication number: 20120314870
    Abstract: The present invention relates to a method of generating a downlink frame. The method of generating the downlink frame includes generating a first sequence and a second sequence for identifying cell groups; generating a first scrambling sequence and a second scrambling sequence that are one-to-two mapped to the sequence number of the primary synchronization signal; scrambling the first sequence with the first scrambling sequence and scrambling the second sequence with the second scrambling sequence; and generating a secondary synchronization signal including the scrambled first sequence and second sequence and mapping the secondary synchronization signal to a frequency domain.
    Type: Application
    Filed: August 10, 2012
    Publication date: December 13, 2012
    Applicants: SAMSUNG ELECTRONICS CO., LTD., ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Il Gyu KIM, Young Jo KO, Hyeong Geun PARK, Kap Seok CHANG, Hyo Seok YI, Young-Hoon KIM, Seung Chan BANG, Kyoung Joon LEE
  • Patent number: 8331406
    Abstract: The present invention relates to a method for generating a downlink frame including generating a first short sequence and a second short sequence indicating cell group information, generating a first scrambling sequence determined by the first synchronization signal, generating a second scrambling sequence determined by the first short sequence, scrambling the first short sequence with the first scrambling sequence, scrambling the second short sequence with at least the second scrambling sequence, and mapping a second synchronization signal including the scrambled first short sequence and the scrambled second short sequence in the frequency domain.
    Type: Grant
    Filed: June 19, 2009
    Date of Patent: December 11, 2012
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Kap Seok Chang, Il Gyu Kim, Hyeong Geun Park, Young Jo Ko, Hyo Seok Yi, Moon Sik Lee, Young Hoon Kim, Seung Chan Bang
  • Patent number: 8331564
    Abstract: The present invention relates to a method of generating a downlink frame. The method of generating the downlink frame includes: generating a first short sequence and a second short sequence indicating cell group information; generating a first scrambling sequence and a second scrambling sequence determined by the primary synchronization signal; generating a third scrambling sequence determined by a short sequence group-a wireless communication system uses a plurality of short sequences and the plurality of short sequences are grouped into a plurality of short sequence group-to which the first short sequence is assigned; scrambling the first short sequence with the first scrambling sequence and scrambling the second short sequence with the second scrambling sequence and the third scrambling sequence; and mapping the secondary synchronization signal that includes the scrambled first short sequence and the scrambled second short sequence to a frequency domain.
    Type: Grant
    Filed: June 19, 2009
    Date of Patent: December 11, 2012
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Kap Seok Chang, Il Gyu Kim, Hyeong Geun Park, Young Jo Ko, Hyo Seok Yi, Chan Bok Jeong, Young Hoon Kim, Seung-Chan Bang
  • Patent number: 8331569
    Abstract: The present invention relates to a method for generating a downlink frame includes: generating a first short sequence and a second short sequence indicating cell group information; generating a first scrambling sequence determined by a first synchronization signal; generating a second scrambling sequence determined by a group to which the first short sequence belongs, the wireless communication system using a plurality of short sequences and the plurality of short sequence being divided into a plurality of groups; scrambling the first short sequence with the first scrambling sequence; scrambling the second short sequence with at least the second scrambling sequence; and mapping a second synchronization signal including the scrambled first short sequence and the scrambled second short sequence in the frequency domain.
    Type: Grant
    Filed: June 19, 2009
    Date of Patent: December 11, 2012
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Kap Seok Chang, Il Gyu Kim, Hyeong Geun Park, Young Jo Ko, Hyo Seok Yi, Moon Sik Lee, Young Hoon Kim, Seung Chan Bang
  • Publication number: 20120307789
    Abstract: Provided is method of forming a signal in a wireless communication system in which a plurality of terminals commonly use a resource in the time domain and the frequency domain. The method includes multiplying a signal to be transmitted by a frequency domain orthogonal code symbol corresponding to a first cyclic shift index in a first slot to be transmitted to a base station, wherein the multiplying is performed by a first terminal and a second terminal; and multiplying information to be transmitted by a frequency domain orthogonal code symbol corresponding to a second cyclic index that is different from the first cyclic index of the first slot to be transmitted to the base station, in a second slot, wherein the multiplying is performed by the first terminal and the second terminal.
    Type: Application
    Filed: August 20, 2012
    Publication date: December 6, 2012
    Applicants: SAMSUNG ELECTRONICS CO., LTD, ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Young-Jo KO, Hyeong-Geun PARK, Il-Gyu KIM, Kapseok CHANG, Hyoseok YI, Young-Hoon KIM, Seung-Chan BANG
  • Patent number: 8325705
    Abstract: The present invention relates to a method for generating a downlink frame includes: generating a first short sequence and a second short sequence indicating cell group information; generating a first scrambling sequence determined by a first synchronization signal; generating a second scrambling sequence determined by a first short sequence and a third scrambling sequence determined by a second short sequence; scrambling the first short sequence with the first scrambling sequence; scrambling the second short sequence with at least the second scrambling sequence; scrambling the second short sequence with the first scrambling sequence; scrambling the first short sequence with at least the third scrambling sequence; and mapping one second synchronization signal including the first short sequence scrambled with the first scrambling sequence and the second short sequence scrambled with at least the second scrambling sequence and another second synchronization signal including the second short sequence scrambled wi
    Type: Grant
    Filed: June 19, 2009
    Date of Patent: December 4, 2012
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Kap Seok Chang, Il Gyu Kim, Hyeong Geun Park, Young Jo Ko, Hyo Seok Yi, Moon Sik Lee, Young Hoon Kim, Seung Chan Bang
  • Patent number: 8320565
    Abstract: The present invention relates to a method of generating a downlink frame. The method of generating the downlink frame includes: generating a first short sequence and a second short sequence indicating cell group information; generating a first scrambling sequence and a second scrambling sequence determined by the primary synchronization signal; generating a third scrambling sequence determined by the first short sequence; scrambling the first short sequence with the first scrambling sequence and scrambling the second short sequence with the second scrambling sequence and the third scrambling sequence; and mapping the secondary synchronization signal that includes the scrambled first short sequence and the scrambled second short sequence to a frequency domain.
    Type: Grant
    Filed: June 19, 2009
    Date of Patent: November 27, 2012
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Kap Seok Chang, Il Gyu Kim, Hyeong Geun Park, Young Jo Ko, Hyo Seok Yi, Chan Bok Jeong, Young Hoon Kim, Seung Chan Bang
  • Patent number: 8320571
    Abstract: The present invention relates to a method of generating a downlink frame.
    Type: Grant
    Filed: June 19, 2009
    Date of Patent: November 27, 2012
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Kap Seok Chang, Il Gyu Kim, Hyeong Geun Park, Young Jo Ko, Hyo Seok Yi, Chan Bok Jeong, Young Hoon Kim, Seung Chan Bang
  • Patent number: 8311031
    Abstract: A method of and an apparatus therefor searching a cell in a mobile station of a communication system in which a plurality of cells are grouped into a plurality of cell groups, and each cell group includes at least two cells. The method includes detecting a primary synchronization signal and a secondary synchronization signal from a received signal, and identifying a cell based on a combination of the primary synchronization signal and the secondary synchronization signal. The secondary synchronization signal is related to the cell group to which the mobile station belongs and the primary synchronization signal is related to the cell to which the mobile station belongs within the cell group.
    Type: Grant
    Filed: February 28, 2011
    Date of Patent: November 13, 2012
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Il-Gyu Kim, Hyeong-Geun Park, Young-Jo Ko, Kapseok Chang, Hyoseok Yi, Young-Hoon Kim, Seung-Chan Bang
  • Patent number: 8295152
    Abstract: Provided is a method of forming a signal in a wireless communication system in which a plurality of terminals commonly use time and frequency resources for efficient code hopping. The method includes allocating the same frequency-axis sequence and different time-axis sequences to a plurality of terminals by using a resource index according to a first slot in the first slot; and allocating different frequency-axis sequences and different time-axis sequences to the plurality of terminals by using a resource index according to a second slot in the second slot.
    Type: Grant
    Filed: June 16, 2008
    Date of Patent: October 23, 2012
    Assignees: Electronics and Telecommunications Research Institute, Samsung Electronics Co., Ltd
    Inventors: Young-Jo Ko, Hyeong-Geun Park, Il-Gyu Kim, Kapseok Chang, Hyoseok Yi, Young-Hoon Kim, Seung-Chan Bang