Patents by Inventor Jeong-Tae Oh

Jeong-Tae Oh 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: 9860043
    Abstract: A method and Mobile Subscriber Station (MSS) are provided for transmitting Channel Quality Information (CQI) in a wireless communication system. The method includes transmitting first information including a value related to CQI for at least one of bands; and transmitting second information including a differential CQI for the at least one of the bands, wherein each band comprises a plurality of adjacent subcarriers.
    Type: Grant
    Filed: October 6, 2014
    Date of Patent: January 2, 2018
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Jee-Hyun Kim, Jeong-Tae Oh, Hoon Huh, Jae-Ho Jeon, Soon-Young Yoon, Seung-Joo Maeng
  • Patent number: 8982807
    Abstract: A method and apparatus for transmitting and receiving a Hybrid Automatic Repeat reQuest (HARQ) burst in a communication system are provided. A transmitter obtains at least one Protocol Data Unit (PDU) according to a decoding order of a receiver which supports a HARQ mode. The receiver controls an order of at least one HARQ burst using burst information including a HARQ Channel IDentifier (ACID).
    Type: Grant
    Filed: June 29, 2011
    Date of Patent: March 17, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sang-Eon Kim, Sang-Sung Han, Ji-Won Lee, Jeong-Tae Oh
  • Publication number: 20150023301
    Abstract: A method and Mobile Subscriber Station (MSS) are provided for transmitting Channel Quality Information (CQI) in a wireless communication system. The method includes transmitting first information including a value related to CQI for at least one of bands; and transmitting second information including a differential CQI for the at least one of the bands, wherein each band comprises a plurality of adjacent subcarriers.
    Type: Application
    Filed: October 6, 2014
    Publication date: January 22, 2015
    Inventors: Jee-Hyun KIM, Jeong-Tae Oh, Hoon Huh, Jae-Ho Jeon, Soon-Young Yoon, Seung-Joo Maeng
  • Patent number: 8854995
    Abstract: A method and Mobile Subscriber Station (MSS) are provided for transmitting Channel Quality Information (CQI) in a wireless communication system using an Orthogonal Frequency Division Multiple Access (OFDMA) scheme. A Carrier to Interference and Noise Ratio (CINR) of at least two bands are measured; each of the at least two bands including a plurality of adjacent subcarriers for a band Adaptive Modulation and Coding (AMC) operation. A Report Response (REP-RSP) message including first information related to the measured CINR is sent. Second information related to a differential CINR of the at least two bands is sent via a Channel Quality Information Channel (CQICH).
    Type: Grant
    Filed: March 8, 2011
    Date of Patent: October 7, 2014
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Jee-Hyun Kim, Jeong-Tae Oh, Hoon Huh, Jae-Ho Jeon, Soon-Young Yoon, Seung-Joo Maeng
  • Patent number: 8744430
    Abstract: An apparatus and method for eliminating interference in a base station (BS) of a communication system. A first BS receives a first reception signal from a first mobile station located in a cell of the first base station. A second base station being adjacent to the first base station delivers decoding information of a second reception signal to the first base station, the second reception signal received from a second mobile station located in a cell of the second base station. The first BS determines whether an error exists on the second reception signal, based on the decoding information and re-generates an interference signal using the decoding information of the second reception signal when no error exists in the second reception signal, and performing interference elimination on the first reception signal using the re-generated interference signal.
    Type: Grant
    Filed: March 5, 2009
    Date of Patent: June 3, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Myung-Kwang Byun, Jeong-Tae Oh, Jae-Ho Jeon, Sung-Kwon Jo
  • Patent number: 8149957
    Abstract: An apparatus and a method for interference cancellation in a broadband wireless communication system are provided. A receiving apparatus includes an estimator, a channel compensator, and a demodulator. The estimator estimates channels of a desired signal and at least one interference signal, estimates noise, calculates a mean interference power of each interference signal, and calculates a mean noise power. The channel compensator channel-compensates burst data. The demodulator calculates a noise variance value by adding the mean noise power to the at least one mean interference power and creates Log Likelihood Ratio (LLR) by demodulating the channel-compensated data.
    Type: Grant
    Filed: April 2, 2008
    Date of Patent: April 3, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jeong-Tae Oh, Myung-Kwang Byun, Jae-Ho Jeon, Seung-Joo Maeng
  • Patent number: 8140122
    Abstract: An apparatus and a method for determining a multi-antenna transmission mode at a base station in a multi-antenna system are provided. The method for determining the multi-antenna transmission mode includes when using a Multiple Input Multiple Output (MIMO) transmission mode as a multi-antenna transmission mode, determining a reference set point; updating a set point for transmit power control of a terminal according to an error occurrence of a signal received from the terminal; determining whether a channel to the terminal is a channel for applying the MIMO transmission mode by comparing the updated set point with the reference set point; and when the channel to the terminal is not a channel for applying the MIMO transmission mode, changing the multi-antenna transmission mode to a fixed transmission mode.
    Type: Grant
    Filed: February 26, 2010
    Date of Patent: March 20, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Byung-Joon Park, Myung-Kwang Byun, Jeong-Tae Oh, Sung-Kwon Jo
  • Publication number: 20120002619
    Abstract: A method and apparatus for transmitting and receiving a Hybrid Automatic Repeat reQuest (HARQ) burst in a communication system are provided. A transmitter obtains at least one Protocol Data Unit (PDU) according to a decoding order of a receiver which supports a HARQ mode. The receiver controls an order of at least one HARQ burst using burst information including a HARQ Channel IDentifier (ACID).
    Type: Application
    Filed: June 29, 2011
    Publication date: January 5, 2012
    Applicant: SAMSUNG ELECTRONICS CO. LTD.
    Inventors: Sang-Eon KIM, Sang-Sung HAN, Ji-Won LEE, Jeong-Tae OH
  • Patent number: 8085861
    Abstract: An apparatus and method for estimating a Signal to Interference plus Noise Ratio (SINR) in a wireless communication system are provided. The method includes processing a received signal by Orthogonal Frequency Division Multiplexing (OFDM) demodulation to convert the received signal into frequency-domain data, selecting ranging data from the frequency-domain data, multiplying the selected ranging data by a ranging code to perform code demodulation, calculating at least one norm value and at least one coherent norm value by bundle for the code-demodulated data and estimating an SINR using the calculated at least one norm value and at least one coherent norm value.
    Type: Grant
    Filed: September 12, 2008
    Date of Patent: December 27, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ha-Young Yang, Jeong-Tae Oh, Hwa-Sun You, Jae-Ho Jeon
  • Patent number: 8040987
    Abstract: A Channel estimating apparatus and method for use in a broadband wireless communication system are provided. The receiving method includes determining a control unit for a channel estimation using burst allocation information of selected sectors; extracting pilot symbols from received data based on the control unit; and acquiring a channel estimate value for each transmission unit by performing a Joint Channel Estimation (JCE) with the extracted pilot symbols that are based on the control unit.
    Type: Grant
    Filed: November 21, 2007
    Date of Patent: October 18, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jeong-Tae Oh, Myung-Kwang Byun, Jae-Ho Jeon, Seung-Joo Maeng
  • Publication number: 20110158123
    Abstract: A method and Mobile Subscriber Station (MSS) are provided for transmitting Channel Quality Information (CQI) in a wireless communication system using an Orthogonal Frequency Division Multiple Access (OFDMA) scheme. A Carrier to Interference and Noise Ratio (CINR) of at least two bands are measured; each of the at least two bands including a plurality of adjacent subcarriers for a band Adaptive Modulation and Coding (AMC) operation. A Report Response (REP-RSP) message including first information related to the measured CINR is sent. Second information related to a differential CINR of the at least two bands is sent via a Channel Quality Information Channel (CQICH).
    Type: Application
    Filed: March 8, 2011
    Publication date: June 30, 2011
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Jee-Hyun KIM, Jeong-Tae Oh, Hoon Huh, Jae-Ho Jeon, Soon-Young Yoon, Seung-Joo Maeng
  • Patent number: 7933195
    Abstract: A method for transmitting channel quality information (CQI) from a receiver station to a transmitter station in a wireless communication system which includes diversity mode consisted of spaced apart subcarriers and band AMC mode consisted of a number of bands comprised of a predetermined number of adjacent subcarriers. The method comprises the steps of transmitting an average CINR(Carrier to Interference and Noise Ratio) value for a full frequency band if the receiver station operates in the diversity mode; transmitting a differential CINR of a predetermined number of bins if the receiver station operates in the band AMC mode.
    Type: Grant
    Filed: March 11, 2005
    Date of Patent: April 26, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jee-Hyun Kim, Jeong-Tae Oh, Hoon Huh, Jae-Ho Jeon, Soon-Young Yoon, Seung-Joo Maeng
  • Patent number: 7894858
    Abstract: An apparatus and method for selecting at least two users to be serviced in SDMA in an SDMA wireless communication system are provided. All users are ordered according to a predetermined rule and all possible user combinations each having at least two users are created from the ordered users. An investigation limit number is set using the capacity of a jth user combination. Or a total investigation number is reduced by comparing the interference-reflected SNR decrements of users with an investigation threshold. Therefore, the computation volume for selecting SDMA users is decreased.
    Type: Grant
    Filed: May 25, 2006
    Date of Patent: February 22, 2011
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Kyun-Byoung Ko, Won-Il Roh, Jeong-Tae Oh, Jae-Ho Jeon, Seung-Joo Maeng, Chan-Byoung Chae
  • Patent number: 7826344
    Abstract: A method and system for transmitting reference signals in a BWA communication system using a first transmit antenna, a second transmit antenna, and a plurality of sub-carriers. Each of the sub-carriers occupies a sub-frequency domain. In the method, reference signals for identifying a first transmit antenna are transmitted through a second predetermined number of sub-carriers in a first mini sub-channel transmitted through the first transmit antenna and occupied by a predetermined time domain and sub-frequency domains of a first predetermined number of sub-carriers, and reference signals for identifying a second transmit antenna are transmitted through the second predetermined number of the sub-carriers in a second mini sub-channel transmitted through the second transmit antenna and occupied by the time domain and the sub-frequency domains of the first predetermined number of sub-carriers.
    Type: Grant
    Filed: July 7, 2005
    Date of Patent: November 2, 2010
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Jeong-Tae Oh, Won-Il Roh, Kyun-Byoung Ko, Seung-Joo Maeng, Jae-Ho Jeon, Pan-Yuh Joo, Chan-Byoung Chae, Hong-Sil Jeong, Sung-Ryul Yun
  • Patent number: 7801237
    Abstract: The present invention relates to a transmitter and a transmission method in communication system using three Tx antennas in order to maximize STFBC coding gain. An input symbol sequence is transmitted through a plurality of Tx antennas in a predetermined method.
    Type: Grant
    Filed: November 4, 2005
    Date of Patent: September 21, 2010
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Chan-Byoung Chae, Hong-Sil Jeong, Sung-Ryul Yun, Won-Il Roh, Jeong-Tae Oh, Kyun-Byoung Ko, Young-Ho Jung, Seung-Hoon Nam, Jae-Hak Chung
  • Publication number: 20100215088
    Abstract: An apparatus and a method for determining a multi-antenna transmission mode at a base station in a multi-antenna system are provided. The method for determining the multi-antenna transmission mode includes when using a Multiple Input Multiple Output (MIMO) transmission mode as a multi-antenna transmission mode, determining a reference set point; updating a set point for transmit power control of a terminal according to an error occurrence of a signal received from the terminal; determining whether a channel to the terminal is a channel for applying the MIMO transmission mode by comparing the updated set point with the reference set point; and when the channel to the terminal is not a channel for applying the MIMO transmission mode, changing the multi-antenna transmission mode to a fixed transmission mode.
    Type: Application
    Filed: February 26, 2010
    Publication date: August 26, 2010
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Byung-Joon Park, Myung-Kwang Byun, Jeong-Tae Oh, Sung-Kwon Jo
  • Patent number: 7729234
    Abstract: Disclosed are an apparatus and a method for transmitting uplink control information in an OFDMA communication system. The method, in which the uplink control information is transmitted using an ACK channel in the OFDMA communication system, includes the steps of receiving data bits of the uplink control information, outputting transmit symbols of sub-carriers by performing orthogonal modulation with respect to symbols for codewords of the received data bits, and inverse fast fourier transforming and transmitting a transmit signal including bundles of sub-carriers allocated the modulated transmit symbols.
    Type: Grant
    Filed: April 14, 2005
    Date of Patent: June 1, 2010
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Myung-Kwang Byun, Jae-Ho Jeon, Seung-Joo Maeng, Jeong-Heon Kim, Hee-Sang Seo, Jeong-Tae Oh
  • Patent number: 7664192
    Abstract: A transmitter for minimizing a PAPR in OFDM communication system. The transmitter includes: a precoder for coding input symbols so that a signal rotation is generated, and generating a complex vector including the coded symbols; an encoder for performing a frequency-space mapping for the symbols generated as the complex vector according to a predetermined scheme; a random mapper for randomly mapping the symbols for which the frequency-space mapping has been performed on a frequency plane through at least one transmit antenna; an Inverse Fast Fourier Transform (IFFT) unit for performing an IFFT for the symbols for which the frequency-space mapping has been performed; and a gradient algorithm unit for receiving IFFTed signals from the IFFT unit and reducing the PAPR.
    Type: Grant
    Filed: October 11, 2005
    Date of Patent: February 16, 2010
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Sung-Ryul Yun, Chan-Byoung Chae, Hong-Sil Jeong, Dong-Seek Park, Won-Il Roh, Jae-Yoel Kim, Pan-Yuh Joo, Jeong-Tae Oh, Kyun-Byoung Ko
  • Patent number: 7660607
    Abstract: Disclosed is a method for using various multiple antenna schemes in a baseband wireless access system is provided. According to the method, a downlink MAP message is constructed in order to support various multiple antenna schemes based on a multiple-input multiple output (MIMO), which is one of the multiple antenna schemes, so that compatibility with exiting MIMO technology having no MIMO feedback can be achieved and overhead occurring in transmission of an MAP information element can be reduced. Further, it is possible to efficiently support spatial multiplexing technology capable of transmitting multiple layers having different modulation and coding in a MIMO system.
    Type: Grant
    Filed: November 8, 2005
    Date of Patent: February 9, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jeong-Tae Oh, Won-Il Roh, Kyun-Byoung Ko, Jae-Ho Jeon, Sung-Ryul Yun, Hong-Sil Jeong, Chan-Byoung Chae, Seung-Joo Maeng
  • Patent number: D887071
    Type: Grant
    Filed: July 19, 2018
    Date of Patent: June 9, 2020
    Assignee: LG Display Co., Ltd.
    Inventors: Hye Cho Shin, Jeong Ho Son, Hyun Soo Chung, Ah Ra Cho, Chi Young Lee, Duck Su Oh, Sung Tae Lee, Ho Geol Lim