Patents by Inventor Song-Nam Hong

Song-Nam Hong 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: 11139836
    Abstract: In a wireless communication system, a transmission device generates (K+J) bits by adding J cyclic redundancy check (CRC) bits to K information bits, and interleaves the (K+J) bits according to a seed value-based interleaving pattern. The transmission device encodes the bits interleaved according to the interleaving pattern, using a polar code. The seed value permutates the CRC bits, and a value previously determined according to K is used as the seed value.
    Type: Grant
    Filed: August 8, 2018
    Date of Patent: October 5, 2021
    Assignees: LG Electronics Inc., Ajou University Industry-Academic Cooperation Foundation
    Inventors: Kwangseok Noh, Bonghoe Kim, Song Nam Hong
  • Publication number: 20200304241
    Abstract: An encoding method on the basis of a polar code in order to support an HARQ according to the present embodiment comprises the steps of: configuring, an input vector for retransmission, which has a length of N and is applied to a mother matrix predetermined on the basis of a polar code, by a wireless device, wherein the input vector is defined on the basis of a first index set for an optimized position of an information bit having a length of K, a second index set for a position of a bit to be punctured among encoded bits generated on the basis of the mother matrix, and a third index set for a position of at least one unknown frozen bit associated with an information copying scheme; and performing encoding on the basis of the input vector and the mother matrix, by the wireless device.
    Type: Application
    Filed: November 13, 2018
    Publication date: September 24, 2020
    Inventors: Kwangseok NOH, Bonghoe KIM, Song-Nam HONG, Min-Oh JUNG
  • Publication number: 20200244288
    Abstract: In a wireless communication system, a transmission device generates (K+J) bits by adding J cyclic redundancy check (CRC) bits to K information bits, and interleaves the (K+J) bits according to a seed value-based interleaving pattern. The transmission device encodes the bits interleaved according to the interleaving pattern, using a polar code. The seed value permutates the CRC bits, and a value previously determined according to K is used as the seed value.
    Type: Application
    Filed: August 8, 2018
    Publication date: July 30, 2020
    Inventors: Kwangseok NOH, Bonghoe KIM, Song Nam HONG
  • Patent number: 9380631
    Abstract: A system and method for state synchronization between a base station and a mobile station in a mobile communication system. A count value indicative of a state change of the base station is received. The received current count value is compared with a previous count value previously received and stored. If the current count value is different from the previous count value, the mobile station performs a network entry procedure with the base station.
    Type: Grant
    Filed: December 29, 2010
    Date of Patent: June 28, 2016
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Yeong-Moon Son, Hong-Sung Chang, Pan-Yuh Joo, Jung-Je Son, Jae-Weon Cho, Mi-Hyun Lee, Hyun-Jeong Kang, Song-Nam Hong, Sung-Jin Lee, Hyoung-Kyu Lim, Young-Ho Kim
  • Patent number: 9277516
    Abstract: A Synchronization Channel (SCH) transmission method includes generating a Primary SCH (P-SCH) sequence according to supplementary information. The supplementary information includes at least one of Base Station (BS) type information, Fast Fourier Transform (FFT) size information, BandWidth (BW) information, group information, sector information, and carrier type information. The method also includes modulating the P-SCH sequence and mapping the modulated P-SCH sequence to subcarriers within a predefined subcarrier set. The subcarriers are included in the subcarrier set being spaced one subcarrier interval apart. The method further includes generating a P-SCH symbol by Orthogonal Frequency Division Multiplexing (OFDM)-modulating the P-SCH sequence mapped to the subcarriers, and transmitting the P-SCH symbol.
    Type: Grant
    Filed: September 30, 2013
    Date of Patent: March 1, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sung-Eun Park, Jae-Weon Cho, Seung-Hoon Choi, Chi-Woo Lim, Song-Nam Hong
  • Patent number: 8737319
    Abstract: A Base Station (BS) includes an apparatus is configured to reduce a MAP overhead in a broadband wireless communication system. The BS operation method for reducing an overhead in a broadband wireless communication system includes transmitting control information for initial transmission and changing first information among the control information transmitted at the initial transmission into second information needed at a retransmission time when there is a retransmission request for the initial transmission. The BS also transmits control information for retransmission including the second information.
    Type: Grant
    Filed: December 15, 2009
    Date of Patent: May 27, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seung-Hoon Choi, Chi-Woo Lim, Song-Nam Hong, Sung-Eun Park
  • Publication number: 20140029590
    Abstract: A Synchronization Channel (SCH) transmission method includes generating a Primary SCH (P-SCH) sequence according to supplementary information. The supplementary information includes at least one of Base Station (BS) type information, Fast Fourier Transform (FFT) size information, BandWidth (BW) information, group information, sector information, and carrier type information. The method also includes modulating the P-SCH sequence and mapping the modulated P-SCH sequence to subcarriers within a predefined subcarrier set. The subcarriers are included in the subcarrier set being spaced one subcarrier interval apart. The method further includes generating a P-SCH symbol by Orthogonal Frequency Division Multiplexing (OFDM)-modulating the P-SCH sequence mapped to the subcarriers, and transmitting the P-SCH symbol.
    Type: Application
    Filed: September 30, 2013
    Publication date: January 30, 2014
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Sung-Eun Park, Jae-Weon Cho, Seung-Hoon Choi, Chi-Woo Lim, Song-Nam Hong
  • Patent number: 8625478
    Abstract: A method to transmit a packet of a BS in a communication system using a HARQ scheme is provided. The method includes assigning resource for transmitting a packet to a mobile station, and transmitting a first packet to the mobile station using the assigned resource; transmitting timing information on which a second packet is transmitted to the mobile station when the BS does not receive information indicating that the mobile station decoded the first packet successfully or when the BS receives information indicating that the mobile station failed to decode the first packet; and transmitting the second packet to the mobile station on a timing point corresponding to the timing information.
    Type: Grant
    Filed: January 25, 2008
    Date of Patent: January 7, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Chi-Woo Lim, Song-Nam Hong, Mi-Hyun Lee, Dong-Seek Park, Ho-Kyu Choi, Jae-Weon Cho
  • Patent number: 8599818
    Abstract: A broadband wireless communication system supporting frequency overlay is provided. Operations of a base station includes checking whether it is time to transmit a common control signal; switching positions of a first Common Control Channel and a second Common Control Channel applied to a previous transmission of the common control signal while mapping a common control signal to the first Common Control Channel and the second Common Control Channel positioned in different Frequency Assignments; and transmitting the common control signal via the first Common Control Channel and the second Common Control Channel that are switched.
    Type: Grant
    Filed: June 10, 2009
    Date of Patent: December 3, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Mi-Hyun Lee, Ho-Kyu Choi, Jae-Weon Cho, Song-Eun Park, Seung-Hoon Choi, Song-Nam Hong, Dong-Seek Park
  • Patent number: 8548074
    Abstract: A Synchronization Channel (SCH) transmission method includes generating a Primary SCH (P-SCH) sequence according to supplementary information. The supplementary information includes at least one of Base Station (BS) type information, Fast Fourier Transform (FFT) size information, BandWidth (BW) information, group information, sector information, and carrier type information. The method also includes modulating the P-SCH sequence and mapping the modulated P-SCH sequence to subcarriers within a predefined subcarrier set. The subcarriers are included in the subcarrier set being spaced one subcarrier interval apart. The method further includes generating a P-SCH symbol by Orthogonal Frequency Division Multiplexing (OFDM)-modulating the P-SCH sequence mapped to the subcarriers, and transmitting the P-SCH symbol.
    Type: Grant
    Filed: January 6, 2010
    Date of Patent: October 1, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sung-Eun Park, Jae-Weon Cho, Seung-Hoon Choi, Chi-Woo Lim, Song-Nam Hong
  • Patent number: 8488480
    Abstract: A method for operating a Mobile Station (MS) in a Multiple Input Multiple Output (MIMO) wireless communication system is provided. The method includes measuring channel quality for a serving Base Station (BS), if the channel quality is less than a threshold, measuring interference power from one or more neighbor BSs, determining a Precoding Matrix Index (PMI) and a priority metric for each neighbor BS, and feeding back at least one of the PMI, a PMI type indicator, the priority metric, and the channel quality to the serving BS.
    Type: Grant
    Filed: July 7, 2009
    Date of Patent: July 16, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Shuangfeng Han, Eun-Yong Kim, Hyeon-Woo Lee, Ho-Kyu Choi, Joon-Ho Park, David Mazzarese, Bruno Clerckx, Song-Nam Hong
  • Patent number: 8296636
    Abstract: A Low Density Parity Check (LDPC) encoding apparatus and method are provided. The LDPC encoding apparatus includes a controller for determining a number of zeros b to be inserted in an input information vector when a length of the input information vector is less than a length of a use information vector of a parity-check matrix, for selecting b stopping sets Sd using the parity-check matrix, for selecting one variable node from each of the b stopping sets Sd using a selection scheme, and for determining positions corresponding to the selected variable node from each of the b stopping sets Sd as positions where zeros are to be inserted.
    Type: Grant
    Filed: March 3, 2009
    Date of Patent: October 23, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seung-Hoon Choi, Sung-Eun Park, Song-Nam Hong, Ho-Kyu Choi, Jae-Weon Cho
  • Patent number: 8284720
    Abstract: Disclosed is a method for transmitting a frame by a base station in a mobile communication system, in which the frame includes at least one uplink Advanced Air Interface (AAI) frame and at least one downlink AAI frame, the uplink AAI frame includes at least one uplink AAI subframe, the downlink AAI frame includes at least one downlink AAI subframe, the downlink AAI subframe includes resource assignment information, feedback information, and data, and the uplink AAI subframe includes feedback information and data.
    Type: Grant
    Filed: May 9, 2008
    Date of Patent: October 9, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Mi-Hyun Lee, Jae-Weon Cho, Hyun-Kyu Yu, Song-Nam Hong
  • Patent number: 8266512
    Abstract: An apparatus and method for transmitting a signal in a communication system using a Hybrid Automatic Repeat reQuest (HARQ) scheme are provided. The method includes generating a codeword vector by encoding an information vector by using a first parity check matrix of Low Density Parity Check (LDPC) codes, generating a transmission vector by processing the codeword vector, and transmitting the transmission vector. When the first parity check matrix includes a plurality of square matrix columns, each square matrix includes a size of L×L, the first parity check matrix is one of p parity check matrixes stored in the signal transmission apparatus, the p parity check matrixes support different numbers of information vector square matrix columns, and each of the numbers of information vector square matrix columns indicates the number of square matrix columns corresponding to the information vector from among the plurality of square matrix columns.
    Type: Grant
    Filed: February 6, 2009
    Date of Patent: September 11, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sung-Eun Park, Seung-Hoon Choi, Song-Nam Hong, Ho-Kyu Choi, Jae-Weon Cho
  • Patent number: 8229052
    Abstract: An apparatus and method for transmitting/receiving an S-SCH in an Institute of Electrical and Electronics Engineers (IEEE) 802.16m wireless communication system are provided. A method for transmitting, by a transmitter, a Secondary Synchronization CHannel (S-SCH) in a communication system includes generating a sequence depending on a cell IDentification (ID), determining a subcarrier set comprising subcarriers to map the generated sequence, based on a Fast Fourier Transform (FFT) size and a segment ID, and mapping the generated sequence to the subcarriers of the determined subcarrier set.
    Type: Grant
    Filed: January 7, 2010
    Date of Patent: July 24, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sung-Eun Park, Jae-Weon Cho, Seung-Hoon Choi, Chi-Woo Lim, Song-Nam Hong
  • Patent number: 8195999
    Abstract: A wireless communication system includes an apparatus and a method for supporting Hybrid Automatic Repeat Request. A transmitting method includes when an encoding packet is bigger than a maximum encoding packet size Nep_max, generating a first codeword by encoding the encoding packet at a mother code rate t; generating a second codeword by selecting [Nep_max/t]-sized code bits from the first codeword; and performing Hybrid Automatic Repeat reQuest (HARQ) using the second codeword.
    Type: Grant
    Filed: October 1, 2009
    Date of Patent: June 5, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seung-Hoon Choi, Chi-Woo Lim, Song-Nam Hong, Sung-Eun Park
  • Patent number: 8145224
    Abstract: Disclosed is a method of transmitting common control information by a base station in a communication system including a first communication system and a second communication system different from each other. In the communication system, a frame for carrying the common control information includes an uplink sub-frame and a downlink sub-frame, each of which includes a resource allocation area for the first communication system and a resource allocation area for the second communication system. The method includes: configuring the common control information to be received by a mobile station belonging to the second communication system; and transmitting the common control information through the resource allocation area for the second communication system included in one of the uplink sub-frame and the downlink sub-frame.
    Type: Grant
    Filed: March 10, 2008
    Date of Patent: March 27, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ki-Chun Cho, Mi-Hyun Lee, Jae-Weon Cho, Ho-Kyu Choi, Hyun-Kyu Yu, Chi-Woo Lim, Song-Nam Hong
  • Patent number: 8014266
    Abstract: A apparatus and method for allocating synchronization acquisition sequence in a time domain and allocating a cell ID search sequence in a frequency domain. In a method for transmitting a synchronization signal of a base station in a wireless communication system, a binary frequency-domain preamble sequence predetermined for cell ID search and a binary time-domain preamble sequence predetermined for synchronization acquisition are used to determine a complex time-domain preamble sequence except the binary time-domain preamble sequence among the time-domain preamble sequences that are generated according to an Inverse Fast Fourier Transform (IFFT) operation on the binary frequency-domain preamble sequence. The complex time-domain preamble sequence and the binary time-domain preamble sequence are transmitted to a mobile station.
    Type: Grant
    Filed: July 22, 2009
    Date of Patent: September 6, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seung-Hoon Choi, June Moon, Sung-Eun Park, Chi-Woo Lim, Song-Nam Hong
  • Patent number: 8014358
    Abstract: Provided is a method for receiving a notification indicating a completion of a network re-entry procedure by a Base Station (BS) in a communication system. The method includes transmitting, to a Mobile Station (MS), a RaNGing ReSPonse (RNG-RSP) message including information indicating whether to omit any of processes or transmission of messages for performing a network re-entry procedure with the BS; and receiving, from the MS, a notification indicating the completion of the network re-entry procedure.
    Type: Grant
    Filed: February 5, 2010
    Date of Patent: September 6, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyun-Jeong Kang, Hyoung-Kyu Lim, Hong-Sung Chang, Pan-Yun Joo, Yeong-Moon Son, Mi-Hyun Lee, Sung-Jin Lee, Song-Nam Hong, Jung-Je Son, Jae-Weon Cho, Young-Ho Kim
  • Patent number: 7952988
    Abstract: An apparatus and method of controlling an action change gap interval in a multi-hop relay cellular network, includes constructing a first symbol included in a first frame as a first interval for a first action change and a second interval for exchanging data; and constructing a last symbol included in the first frame as a first interval for exchanging data and a second interval for a second action change. Accordingly, the system capacity and the system efficiency can be raised by reducing the overhead due to the action change gap in the cellular network.
    Type: Grant
    Filed: December 11, 2006
    Date of Patent: May 31, 2011
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Mi-Hyun Lee, Pan-Yuh Joo, Jung-Je Son, Jae-Weon Cho, Hyoung-Kyu Lim, Yeong-Moon Son, Sung-Jin Lee, Hyun-Jeong Kang, Song-Nam Hong, Young-Ho Kim