Patents by Inventor Joonhyuk Kang
Joonhyuk Kang 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).
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Patent number: 11973583Abstract: A communication method of a heterogeneous distributed wireless network system includes calculating a first transmission threshold in the heterogeneous distributed wireless network system including a plurality of distributed networks that share a same frequency band, determining whether data is transmitted by transmitter/receiver pairs included in the heterogeneous distributed wireless network system, based on the first transmission threshold, calculating a second transmission threshold locally for each of the distributed networks, based on whether data is transmitted by at least one transmitter belonging to the transmitter/receiver pairs, selectively determining whether data is transmitted for each of the distributed networks based on the second transmission threshold, and transmitting the data.Type: GrantFiled: November 11, 2021Date of Patent: April 30, 2024Assignee: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Joonhyuk Kang, Jinu Gong, Wanjik Kim, Dongwon Kim
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Publication number: 20230180092Abstract: A data offloading method for vehicle edge computing is provided. The data offloading method may include transmitting input data to a road side unit (RSU) closest to a vehicle through an uplink, and receiving output data processed by the RSU closest to the vehicle through a downlink. The transmitting of the input data to the RSU closest to the vehicle through the uplink may include comparing a location of the vehicle with locations of candidate RSUs, and the transmitting of the input data to the RSU closest to the vehicle through the uplink and receiving of the output data processed by the RSU closest to the vehicle through the downlink may be performed in a state of occupying at least one time frame among time frames allocated for a communication between the vehicle and the candidate RSUs.Type: ApplicationFiled: February 14, 2022Publication date: June 8, 2023Inventors: Joonhyuk Kang, Youngsu Jang
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Publication number: 20220149975Abstract: A communication method of a heterogeneous distributed wireless network system includes calculating a first transmission threshold in the heterogeneous distributed wireless network system including a plurality of distributed networks that share a same frequency band, determining whether data is transmitted by transmitter/receiver pairs included in the heterogeneous distributed wireless network system, based on the first transmission threshold, calculating a second transmission threshold locally for each of the distributed networks, based on whether data is transmitted by at least one transmitter belonging to the transmitter/receiver pairs, selectively determining whether data is transmitted for each of the distributed networks based on the second transmission threshold, and transmitting the data.Type: ApplicationFiled: November 11, 2021Publication date: May 12, 2022Applicant: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Joonhyuk Kang, Jinu Gong, Wanjik Kim, Dongwon Kim
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Patent number: 11005612Abstract: The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). According to various embodiments in the present disclosure, an operating method of a base station in a wireless communication system may include determining a transmission mode of the greatest channel capacity among a plurality of transmission modes based on first channel information of a first terminal and second channel information of a second terminal, and transmitting a transmit signal generated based on the determined transmission mode to the first terminal and the second terminal.Type: GrantFiled: December 16, 2016Date of Patent: May 11, 2021Assignees: Samsung Electronics Co., Ltd., Korea Advanced Institute of Science and TechnologyInventors: Jeongwan Koh, Joonhyuk Kang, Jongmok Kim, Sangwook Suh
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Patent number: 10917270Abstract: A modulation device includes: a communication unit; and a controller configured to: divide a communication signal received by the communication unit into a plurality of frequency bands, determine at least one noise band including a noise signal among the plurality of frequency bands, and generate an output signal by replacing at least one of the plurality of frequency bands corresponding to the noise band with another frequency band.Type: GrantFiled: September 4, 2019Date of Patent: February 9, 2021Assignees: Hyundai Motor Company, Kia Motors Corporation, Korea Advanced Institute of Science and TechnologyInventors: Jihoon Sung, Jinook Yoo, Gil Sup An, Joonhyuk Kang, Seungjae Jung, Jin Yeop Na, Jinu Gong
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Publication number: 20200328920Abstract: A modulation device includes: a communication unit; and a controller configured to: divide a communication signal received by the communication unit into a plurality of frequency bands, determine at least one noise band including a noise signal among the plurality of frequency bands, and generate an output signal by replacing at least one of the plurality of frequency bands corresponding to the noise band with another frequency band.Type: ApplicationFiled: September 4, 2019Publication date: October 15, 2020Inventors: Jihoon Sung, Jinook Yoo, Gil Sup An, Joonhyuk Kang, Seungjae Jung, Jin Yeop Na, Jinu Gong
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Publication number: 20200295891Abstract: The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). According to various embodiments in the present disclosure, an operating method of a base station in a wireless communication system may include determining a transmission mode of the greatest channel capacity among a plurality of transmission modes based on first channel information of a first terminal and second channel information of a second terminal, and transmitting a transmit signal generated based on the determined transmission mode to the first terminal and the second terminal.Type: ApplicationFiled: December 16, 2016Publication date: September 17, 2020Inventors: Jeongwan KOH, Joonhyuk KANG, Jongmok KIM, Sangwook SUH
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Patent number: 9002401Abstract: A terminal and method for recognizing a communication target within a visible range. The method of a terminal to recognize a communication target includes obtaining location information of a communication target whose identification information is unknown within a visible range of a terminal user; and recognizing a relative location of the communication target with respect to the terminal based on the obtained location information and displaying the recognized relative location of the communication target.Type: GrantFiled: February 6, 2013Date of Patent: April 7, 2015Assignees: Electronics and Telecommunications Research Institute, Korea Advanced Institute of Science and TechnologyInventors: Joonhyuk Kang, Byung-Jae Kwak, Young-Hoon Kim, Seung-Chan Bang, Eunhye Park
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Patent number: 8369438Abstract: An iterative tree search-based preceding method for a multi-user Multi-Input Multi-Output (MIMO) communication system includes determining a reference value of a cumulative branch metric of a candidate symbol, eliminating candidates having values that exceed the determined reference value of the cumulative branch metric of the candidate symbol, and registering values, which do not exceed the determined reference value of the cumulative branch metric of the candidate symbol, as entries, and selecting the least value from the values registered as the entries. Thereby, the method has low complexity and similar performance compared to an existing Sphere Encoding (SE) technique.Type: GrantFiled: May 14, 2009Date of Patent: February 5, 2013Assignees: Samsung Electronics Co., Ltd, Korea Advanced Institute of Science and TechnologyInventors: Joo-Hyun Lee, Sung-Soo Hwang, Sang-Boh Yun, Jong-Ho Lee, Sung-Yoon Jung, Joonhyuk Kang, Kyung-Ho Park, Jong-Sub Cha, Namseok Chang, Keon-Kook Lee
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Patent number: 8325835Abstract: A Non-Continuous Orthogonal Frequency Division Multiplexing (NC-OFDM) system may be provided. The NC-OFDM system, including: a sensing unit to determine whether to use at least one frequency band; a band control unit to disable a subcarrier with respect to a frequency band in use as a result of the determination; a pruning determination unit to determine whether a number of points where the subcarrier is disabled is greater than a threshold value; a pruning retrieval unit to retrieve a pruning path generated by the disabling of the subcarrier, when the number of points is greater than the threshold value; and a Fourier transform unit to perform a Fast Fourier transform (FFT) or Inverse FFT (IFFT) by applying the pruning path to the subcarrier.Type: GrantFiled: June 15, 2010Date of Patent: December 4, 2012Assignee: Electronics and Telecommunications Research InstituteInventors: Deockgu Jee, Jin Up Kim, Joonhyuk Kang, Keongkook Lee, Jungho Myung
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Publication number: 20120275550Abstract: Disclosed is a method for detecting S-SCH in cell searching including: detecting an m0 value corresponding to an even index in a secondary synchronization channel (S-SCH) signal having an even index; determining an m1 group defined by the m0 value; detecting an m1 value using correlation detection relation within the m1 group; and detecting a group ID using the m0 value and the m1 value.Type: ApplicationFiled: April 26, 2012Publication date: November 1, 2012Applicants: Korea Advanced Institute of Science and Technology, Electronics and Telecommunications Research InstituteInventors: Young Seok Baek, Bon Tae Koo, Jung-ho Myung, Joonhyuk Kang
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Publication number: 20100316147Abstract: A Non-Continuous Orthogonal Frequency Division Multiplexing (NC-OFDM) system may be provided. The NC-OFDM system, including: a sensing unit to determine whether to use at least one frequency band; a band control unit to disable a subcarrier with respect to a frequency band in use as a result of the determination; a pruning determination unit to determine whether a number of points where the subcarrier is disabled is greater than a threshold value; a pruning retrieval unit to retrieve a pruning path generated by the disabling of the subcarrier, when the number of points is greater than the threshold value; and a Fourier transform unit to perform a Fast Fourier transform (FFT) or Inverse FFT (IFFT) by applying the pruning path to the subcarrier.Type: ApplicationFiled: June 15, 2010Publication date: December 16, 2010Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Deockgu Jee, Jin Up Kim, Joonhyuk Kang, Keongkook Lee, Jungho Myung
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Patent number: 7787516Abstract: A wireless communication system and a method for reducing a ranging time. The communication system includes a main synchronization block group which processes the transceived signal and determines whether the transceived signal is a signal desired by a transmitting device when a receiving device re-transmits the transceived signal to the transmitting device; a ranging block which measures a distance between the transmitting device and the receiving device using a ranging signal when the transceived signal is the desired signal of the transmitting device based on the determination of the main synchronization block group and when the transceived signal is the ranging signal; and a symbol synchronization block which detects a start point and an end point of a symbol forming the signal when the transceived signal from the receiving device is a data communication signal. Accordingly, the fast ranging is feasible and channel occupation time can be shortened.Type: GrantFiled: August 10, 2006Date of Patent: August 31, 2010Assignee: Samsung Electronics Co., Ltd.Inventors: Jae-hyon Kim, Young-hwan Kim, Seong-soo Lee, Joonhyuk Kang, Jaehwan Kim, Yungil Kim
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Patent number: 7738576Abstract: A communication system which transmits and receives a communication signal having an intra-guard-interval (IGI) inserted is provided. The communication system includes a signal generator which is configured to generate a signal to carry data; and a signal output part which is configured to split a symbol period, which is a transmission unit of the communication signal into a plurality of sections, and to selectively insert the signal which is generated into the plurality of sections, and to output the communication signal.Type: GrantFiled: July 28, 2006Date of Patent: June 15, 2010Assignee: Samsung Electronics Co., Ltd.Inventors: Jae-hyon Kim, Young-hwan Kim, Seong-soo Lee, Joonhyuk Kang, Yungil Kim, Hyounkuk Kim, Hyoncheol Park, Jaeseung Son
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Publication number: 20090286494Abstract: An iterative tree search-based preceding method for a multi-user Multi-Input Multi-Output (MIMO) communication system includes determining a reference value of a cumulative branch metric of a candidate symbol, eliminating candidates having values that exceed the determined reference value of the cumulative branch metric of the candidate symbol, and registering values, which do not exceed the determined reference value of the cumulative branch metric of the candidate symbol, as entries, and selecting the least value from the values registered as the entries. Thereby, the method has low complexity and similar performance compared to an existing Sphere Encoding (SE) technique.Type: ApplicationFiled: May 14, 2009Publication date: November 19, 2009Applicants: Information and Communications University Research and Industrial Cooperation GroupInventors: Joo-Hyun Lee, Sung-Soo Hwang, Sang-Boh Yun, Jong-Ho Lee, Sung-Yoon Jung, Joonhyuk Kang, Kyung-Ho Park, Jong-Sub Cha, Namseok Chang, Keon-Kook Lee
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Patent number: 7439904Abstract: A ranging system and ranging method are provided. The ranging system includes a transmission signal generator which generates a transmission signal, which is transmitted from a transmission device to a reception device; a correction signal generator which converts the transmission signal, which is processed in the reception device and re-input to the transmission device, into a correction signal; a reference signal generator which generates a reference signal, an overlap detector which detects an overlap region between the correction signal and the reference signal; a time calculator which calculates a transmission time of the transmission signal; and a distance calculator which calculates a distance between the devices using the transmission time.Type: GrantFiled: April 11, 2006Date of Patent: October 21, 2008Assignee: Samsung Electronics Co., Ltd.Inventors: Jae-hyon Kim, Joonhyuk Kang, Young-hwan Kim, Yungil Kim, Hyounkuk Kim, Jaeseung Son, Hyuncheol Park
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Publication number: 20070288618Abstract: Disclosed is a method of establishing a network topology capable of carrying out a relay transmission among sub-networks in a backbone network having the plural sub-networks composed of at least one device. The method includes each of sub-master devices controlling communications in the respective sub-networks transmitting an ID request message to other sub-master devices; transmitting a response message from the other sub-master devices to the sub-master device having transmitted the ID request message; each of the sub-master devices assigning an ID to the sub-master device having no ID among the sub-master devices having transmitted the response message; and forming a network topology in accordance with whether or not the response message has been transmitted, and in accordance with the order of ID assignments, after the ID is assigned to all the sub-master devices in the backbone network. The network topology enables reliable communications among the respective sub-networks.Type: ApplicationFiled: December 20, 2006Publication date: December 13, 2007Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Yeong-bae Yeo, Junkyu Lee, Joonhyuk Kang, June-koo Rhee, Young-kwang Seo, Hyuncheol Park, Namseok Chang
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Publication number: 20070140319Abstract: A method and an apparatus for transmitting a single-band orthogonal frequency division multiplexing (OFDM)-based ultra wideband (UWB) signal over a pipeline carrying a cable television broadcasting signal. The method includes transforming a multimedia signal transmitted from a multimedia device into a wireline UWB signal; transforming the wireline UWB signal into a single-band OFDM signal; and frequency-spreading the single-band OFDM signal according to a transmission rate. Thus, the apparatus can be robust to multi-path interference and extend transmission distance so as to increase transmission efficiency.Type: ApplicationFiled: June 1, 2006Publication date: June 21, 2007Inventors: Keun-joo Park, Kwanghoon Kim, Hyuncheol Park, Yusung Lee, June-koo Rhee, Hyun-chin Kim, Joonhyuk Kang, Junkyu Lee
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Publication number: 20070133660Abstract: A wireless communication system and a method for reducing a ranging time. The communication system includes a main synchronization block group which processes the transceived signal and determines whether the transceived signal is a signal desired by a transmitting device when a receiving device re-transmits the transceived signal to the transmitting device; a ranging block which measures a distance between the transmitting device and the receiving device using a ranging signal when the transceived signal is the desired signal of the transmitting device based on the determination of the main synchronization block group and when the transceived signal is the ranging signal; and a symbol synchronization block which detects a start point and an end point of a symbol forming the signal when the transceived signal from the receiving device is a data communication signal. Accordingly, the fast ranging is feasible and channel occupation time can be shortened.Type: ApplicationFiled: August 10, 2006Publication date: June 14, 2007Inventors: Jae-hyon Kim, Young-hwan Kim, Seong-soo Lee, Joonhyuk Kang, Jaehwan Kim, Yungil Kim
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Publication number: 20070133694Abstract: A communication system which transmits and receives a communication signal having an intra-guard-interval (IGI) inserted is provided. The communication system includes a signal generator which is configured to generate a signal to carry data; and a signal output part which is configured to split a symbol period, which is a transmission unit of the communication signal into a plurality of sections, and to selectively insert the signal which is generated into the plurality of sections, and to output the communication signal.Type: ApplicationFiled: July 28, 2006Publication date: June 14, 2007Inventors: Jae-hyon Kim, Young-hwan Kim, Seong-soo Lee, Joonhyuk Kang, Yungil Kim, Hyounkuk Kim, Hyoncheol Park, Jaeseung Son