Patents by Inventor Hyoung Soo Lim

Hyoung Soo Lim 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: 11076394
    Abstract: The MAC frame in a wireless communication system includes a terminal ID allocated to each of multiple terminals. At least one connection ID is allocated to each terminal having the terminal ID, and sub-carrier allocation information is allocated to each connection having the connection ID. The sub-carrier allocation information includes a sub-carrier allocation status for each sub-carrier, and the number of allocated information bits for each sub-carrier. The sub-carrier allocation status and the number of allocated information bits for each sub-carrier can be allocated, by sub-carriers, to the sub-carrier allocation information using a same number of bits; or the information on the sub-carrier allocation status is first allocated to the sub-carrier allocation information and the number of allocated information bits for each sub-carrier is allocated.
    Type: Grant
    Filed: January 2, 2019
    Date of Patent: July 27, 2021
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Hyoung-Soo Lim, Woo-Yong Choi, Yong-Sun Kim, Jae-Young Ahn
  • Patent number: 10645454
    Abstract: Disclosed are a dynamic multi-mode service (MMS) transmission apparatus, a dynamic MMS reception apparatus, and a method for providing a dynamic MMS.
    Type: Grant
    Filed: May 18, 2017
    Date of Patent: May 5, 2020
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Hyun-Jeong Yim, Soon-Choul Kim, Byung-Jun Bae, Hye-Ju Oh, Heung-Mook Kim, Hyoung-Soo Lim, Nam-Ho Hur
  • Patent number: 10498560
    Abstract: Disclosed herein are an apparatus and method for providing FTN communication using transmit diversity. A transmission apparatus generates a signal to be output through diversity modulation. A diversity order of diversity modulation may be set based on an FTN parameter, such as a variable for adjusting sampling time or a symbol transmission speed. When the diversity order is set based on the FTN parameter, the FTN parameter and the diversity order may be set so as to satisfy a QoS required of the transmission apparatus, such as a transmission rate and a Bit Error Rate. Depending on the circumstances, the set FTN parameter and diversity order may be provided to a reception apparatus that is to receive the output signal.
    Type: Grant
    Filed: February 22, 2018
    Date of Patent: December 3, 2019
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Myung-Sun Baek, Joung-Il Yun, Sang-Woon Kwak, Hae-Chan Kwon, Young-Su Kim, Hyoung-Soo Lim, Nam-Ho Hur
  • Patent number: 10461970
    Abstract: A transmitter/receiver for supporting FTN (Faster-than-Nyquist) signaling and a method for the same may be provided. The transmitter for supporting FTN signaling) according to an embodiment of the present disclosure includes a frame input unit providing an input frame obtained by composing a transmission signal in units of a frame; a sequence frame determination unit generating a plurality of scramble sequences, generating a plurality of sequence frames by applying the plurality of scramble sequences to the input frame, and determining at least one sequence frame from the plurality of sequence frames considering a PAPR value of the plurality of sequence frames; and a signal transmission unit for transmitting the sequence frame determined.
    Type: Grant
    Filed: February 2, 2018
    Date of Patent: October 29, 2019
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Myung Sun Baek, Young Su Kim, Nam Ho Hur, Hyoung Soo Lim, Heung Mook Kim
  • Publication number: 20190141686
    Abstract: The MAC frame in a wireless communication system includes a terminal ID allocated to each of multiple terminals. At least one connection ID is allocated to each terminal having the terminal ID, and sub-carrier allocation information is allocated to each connection having the connection ID. The sub-carrier allocation information includes a sub-carrier allocation status for each sub-carrier, and the number of allocated information bits for each sub-carrier. The sub-carrier allocation status and the number of allocated information bits for each sub-carrier can be allocated, by sub-carriers, to the sub-carrier allocation information using a same number of bits; or the information on the sub-carrier allocation status is first allocated to the sub-carrier allocation information and the number of allocated information bits for each sub-carrier is allocated.
    Type: Application
    Filed: January 2, 2019
    Publication date: May 9, 2019
    Inventors: Hyoung-Soo LIM, Woo-Yong CHOI, Yong-Sun KIM, Jae-Young AHN
  • Patent number: 10218462
    Abstract: Disclosed is an apparatus and method for supporting cooperative transmission, the apparatus including a controller configured to determine detection bits with respect to a plurality of relay terminals based on channel states between a source terminal and the plurality of relay terminals, the relay terminals configured to detect sub-data corresponding to the detection bits from data when the data is transmitted from the source terminal, an interface configured to receive the sub-data from the relay terminals, respectively, in response to the relay terminals detecting the sub-data, and a restorer configured to restore the data by combining the received sub-data.
    Type: Grant
    Filed: March 15, 2017
    Date of Patent: February 26, 2019
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Myung Sun Baek, Sang Woon Kwak, Young Su Kim, Joung Il Yun, Hyoung Soo Lim, Nam Ho Hur
  • Patent number: 10206207
    Abstract: The MAC frame in a wireless communication system includes a terminal ID allocated to each of multiple terminals. At least one connection ID is allocated to each terminal having the terminal ID, and sub-carrier allocation information is allocated to each connection having the connection ID. The sub-carrier allocation information includes a sub-carrier allocation status for each sub-carrier, and the number of allocated information bits for each sub-carrier. The sub-carrier allocation status and the number of allocated information bits for each sub-carrier can be allocated, by sub-carriers, to the sub-carrier allocation information using a same number of bits; or the information on the sub-carrier allocation status is first allocated to the sub-carrier allocation information and the number of allocated information bits for each sub-carrier is allocated.
    Type: Grant
    Filed: March 6, 2017
    Date of Patent: February 12, 2019
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Hyoung-Soo Lim, Woo-Yong Choi, Yong-Sun Kim, Jae-Young Ahn
  • Publication number: 20190013972
    Abstract: Disclosed herein are an apparatus and method for providing FTN communication using transmit diversity. A transmission apparatus generates a signal to be output through diversity modulation. A diversity order of diversity modulation may be set based on an FTN parameter, such as a variable for adjusting sampling time or a symbol transmission speed. When the diversity order is set based on the FTN parameter, the FTN parameter and the diversity order may be set so as to satisfy a QoS required of the transmission apparatus, such as a transmission rate and a Bit Error Rate. Depending on the circumstances, the set FTN parameter and diversity order may be provided to a reception apparatus that is to receive the output signal.
    Type: Application
    Filed: February 22, 2018
    Publication date: January 10, 2019
    Inventors: Myung-Sun BAEK, Joung-Il YUN, Sang-Woon KWAK, Hae-Chan KWON, Young-Su KIM, Hyoung-Soo LIM, Nam-Ho HUR
  • Publication number: 20180351771
    Abstract: A transmitter/receiver for supporting FTN(Faster-than-Nyquist) signaling and a method for the same may be provided. The transmitter for supporting FTN signaling) according to an embodiment of the present disclosure includes a frame input unit providing an input frame obtained by composing a transmission signal in units of a frame; a sequence frame determination unit generating a plurality of scramble sequences, generating a plurality of sequence frames by applying the plurality of scramble sequences to the input frame, and determining at least one sequence frame from the plurality of sequence frames considering a PAPR value of the plurality of sequence frames; and a signal transmission unit for transmitting the sequence frame determined.
    Type: Application
    Filed: February 2, 2018
    Publication date: December 6, 2018
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Myung Sun BAEK, Young Su KIM, Nam Ho HUR, Hyoung Soo LIM, Heung Mook KIM
  • Patent number: 10142140
    Abstract: Disclosed herein are an apparatus and method for receiving a signal based on FTN. The apparatus for receiving a signal based on FTN includes an equalizer for creating a Log Likelihood Ratio (LLR) sequence by equalizing an FTN signal sequence sampled at an FTN signaling rate; a deinterleaver for deinterleaving the created LLR sequence; a decoder for decoding the LLR sequence by correcting errors in the deinterleaved LLR sequence; an interleaver for interleaving the decoded LLR sequence and providing the interleaved LLR sequence to the equalizer; and an FTN interference estimation unit for providing the FTN signal sequence, from which an FTN interference sequence is eliminated, to the equalizer, using the interleaved LLR sequence.
    Type: Grant
    Filed: January 31, 2017
    Date of Patent: November 27, 2018
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Joung-Il Yun, Sang-Woon Kwak, Myung-Sun Baek, Hae-Chan Kwon, Hyoung-Soo Lim, Nam-Ho Hur, Nam-Shik Kim, Bi-Woong Chung
  • Patent number: 10142150
    Abstract: An exemplary embodiment of the present invention provides a pilot signal generating apparatus, including: a changed amount estimating unit which estimates a changed amount of a pilot symbol due to interference of a data symbol which is adjacent to a predefined position of the pilot symbol; and a symbol generating unit which generates the pilot symbol in consideration of the estimated changed amount.
    Type: Grant
    Filed: October 6, 2016
    Date of Patent: November 27, 2018
    Assignees: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, KYUNGPOOK NATIONAL UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION
    Inventors: Young Su Kim, Dong Seog Han, Myung Chul Park, Hyoung Soo Lim, Nam Ho Hur
  • Patent number: 10135895
    Abstract: The present invention relates to a method and an apparatus for transmitting broadcasting contents which repeatedly transmits segment based broadcasting contents to easily develop next generation broadcasting service and system so that it looks as if the contents are continuously reproduced even when contents having a limited capacity are repeatedly reproduced and a test environment which is the same as an actual broadcasting environment is provided.
    Type: Grant
    Filed: March 29, 2016
    Date of Patent: November 20, 2018
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Byung Jun Bae, Hye Ju Oh, Hyun Jeong Yim, Soon Choul Kim, Hyoung Soo Lim, Nam Ho Hur
  • Patent number: 10129051
    Abstract: Disclosed herein are a method and apparatus for iterative interference cancellation and channel estimation in a system based on FTN communication including a pilot. Interference of a pilot symbol on a data symbol is estimated, and the estimated interference is eliminated from a sequence of data symbols. When demodulation and channel decoding are performed on the sequence of data symbols, interference between data symbols and interference of a data symbol on a pilot symbol are estimated. Such estimation is repeatedly performed, and as FTN interference is repeatedly estimated and eliminated, channel estimation performance is improved, and through the improved channel estimation performance, the reception performance of the entire system is improved.
    Type: Grant
    Filed: July 25, 2017
    Date of Patent: November 13, 2018
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Sang-Woon Kwak, Joung-Il Yun, Myung-Sun Baek, Hae-Chan Kwon, Young-Su Kim, Hyoung-Soo Lim, Nam-Ho Hur
  • Publication number: 20180205578
    Abstract: Disclosed herein are a method and apparatus for iterative interference cancellation and channel estimation in a system based on FTN communication including a pilot. Interference of a pilot symbol on a data symbol is estimated, and the estimated interference is eliminated from a sequence of data symbols. When demodulation and channel decoding are performed on the sequence of data symbols, interference between data symbols and interference of a data symbol on a pilot symbol are estimated. Such estimation is repeatedly performed, and as FTN interference is repeatedly estimated and eliminated, channel estimation performance is improved, and through the improved channel estimation performance, the reception performance of the entire system is improved.
    Type: Application
    Filed: July 25, 2017
    Publication date: July 19, 2018
    Inventors: Sang-Woon KWAK, Joung-Il YUN, Myung-Sun BAEK, Hae-Chan KWON, Young-Su KIM, Hyoung-Soo LIM, Nam-Ho HUR
  • Patent number: 10008214
    Abstract: Disclosed is a unified speech and audio coding (USAC) audio signal encoding/decoding apparatus and method for digital radio services. An audio signal encoding method may include receiving an audio signal, determining a coding method for the received audio signal, encoding the audio signal based on the determined coding method, and configuring, as an audio superframe of a fixed size, an audio stream generated as a result of encoding the audio signal, wherein the coding method may include a first coding method associated with extended high-efficiency advanced audio coding (xHE-AAC) and a second coding method associated with existing advanced audio coding (AAC).
    Type: Grant
    Filed: September 9, 2016
    Date of Patent: June 26, 2018
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Seung Kwon Beack, Tae Jin Lee, Jong Mo Sung, Kyu Tae Yang, Bong Ho Lee, Mi Suk Lee, Hyoung Soo Lim, Jin Soo Choi
  • Publication number: 20180034591
    Abstract: Disclosed herein are an apparatus and method for receiving a signal based on FTN. The apparatus for receiving a signal based on FTN includes an equalizer for creating a Log Likelihood Ratio (LLR) sequence by equalizing an FTN signal sequence sampled at an FTN signaling rate; a deinterleaver for deinterleaving the created LLR sequence; a decoder for decoding the LLR sequence by correcting errors in the deinterleaved LLR sequence; an interleaver for interleaving the decoded LLR sequence and providing the interleaved LLR sequence to the equalizer; and an FTN interference estimation unit for providing the FTN signal sequence, from which an FTN interference sequence is eliminated, to the equalizer, using the interleaved LLR sequence.
    Type: Application
    Filed: January 31, 2017
    Publication date: February 1, 2018
    Inventors: Joung-Il YUN, Sang-Woon KWAK, Myung-Sun BAEK, Hae-Chan KWON, Hyoung-Soo LIM, Nam-Ho HUR, Nam-Shik KIM, Bi-Woong CHUNG
  • Publication number: 20170374421
    Abstract: Disclosed are a dynamic multi-mode service (MMS) transmission apparatus, a dynamic MMS reception apparatus, and a method for providing a dynamic MMS.
    Type: Application
    Filed: May 18, 2017
    Publication date: December 28, 2017
    Inventors: Hyun-Jeong YIM, Soon-Choul KIM, Byung-Jun BAE, Hye-Ju OH, Heung-Mook KIM, Hyoung-Soo LIM, Nam-Ho HUR
  • Publication number: 20170346599
    Abstract: Disclosed is an apparatus and method for supporting cooperative transmission, the apparatus including a controller configured to determine detection bits with respect to a plurality of relay terminals based on channel states between a source terminal and the plurality of relay terminals, the relay terminals configured to detect sub-data corresponding to the detection bits from data when the data is transmitted from the source terminal, an interface configured to receive the sub-data from the relay terminals, respectively, in response to the relay terminals detecting the sub-data, and a restorer configured to restore the data by combining the received sub-data.
    Type: Application
    Filed: March 15, 2017
    Publication date: November 30, 2017
    Inventors: Myung Sun BAEK, Sang Woon KWAK, Young Su KIM, Joung Il YUN, Hyoung Soo LIM, Nam Ho HUR
  • Patent number: 9780975
    Abstract: A Faster-Than-Nyquist (FTN) signal transmission apparatus and method thereof. The signal transmission apparatus includes a pilot interference estimator and compensator configured to estimate interference on pilot symbols by a Faster-Than-Nyquist (FTN) signal generated by FTN modulating a sequence of data symbols, and generate a compensated pilot symbol sequence to cancel the estimated interference; a pilot FTN modulator configured to generate an FTN pilot signal in which inter-pilot symbol interference does not occur, by performing FTN pulse-shaping on the compensated pilot symbol sequence; and a transmitter configured to transmit an FTN data signal and the FTN pilot signal.
    Type: Grant
    Filed: October 12, 2016
    Date of Patent: October 3, 2017
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Sang Woon Kwak, Joung Il Yun, Myung Sun Baek, Young Su Kim, Hyoung Soo Lim, Nam Ho Hur
  • Publication number: 20170195742
    Abstract: Disclosed herein is an apparatus and method for providing a broadcast service. The apparatus for providing a broadcast service includes a segment and metadata creation unit for creating a media segment file and profile information for a broadcast streaming service, a transfer processing unit for performing packetization and configuring a transport session in order to transfer audio/video and data objects, which correspond to the media segment file, and a broadcast transmission unit for formatting a media stream, received from the transfer processing unit, according to a broadcast signal format by multiplexing the media stream based on a layer, for creating a broadcast transmission frame that includes signaling information, and for transmitting the broadcast transmission frame via a broadcast network.
    Type: Application
    Filed: June 21, 2016
    Publication date: July 6, 2017
    Inventors: Hye-Ju OH, Byung-Jun BAE, Hyun-Jeong YIM, Soon-Choul KIM, Hyoung-Soo LIM, Nam-Ho HUR