Patents by Inventor Seung Chan Bang
Seung Chan Bang 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: 11363547Abstract: A method of 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, each cell group including at least two cells, 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: GrantFiled: August 28, 2018Date of Patent: June 14, 2022Assignee: Electronics and Telecommunications Research InstituteInventors: Il Gyu Kim, Hyeong Geun Park, Young Jo Ko, Kapseok Chang, Hyo Seok Yi, Young Hoon Kim, Seung Chan Bang
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Patent number: 11363565Abstract: Provided is a method for transmitting paging information in a cellular system. An object of the method is transmitting paging information which can improve applicability of a limited radio resource by variably and flexibly setting up and mapping a transport channel and a physical channel in order to transmit information notifying start of downlink information from a base station to a terminal in a cellular system for packet transmission. The method includes the steps of: forming a paging channel (PCH) in a transport channel corresponding to generation of paging information; setting a paging indication channel (PICH) based on the paging information and forming the paging indication channel in a radio resource of a physical layer; and allocating the paging channel to the radio resource of the physical layer.Type: GrantFiled: December 3, 2020Date of Patent: June 14, 2022Assignee: Electronics and Telecommunications Research InstituteInventors: Jae Heung Kim, Jung Im Kim, Kyoung Seok Lee, Soo Jung Jung, Seung Chan Bang, Byung Han Ryu
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Publication number: 20220150828Abstract: Provided is a method and apparatus for discontinuously transmitting/receiving packets for low-power consumption of a terminal in a cellular system for packet transmission. The present research provides a method and apparatus that can perform a low-power consuming operation when a terminal is in active state in a cellular system. The method for discontinuously transmitting/receiving packet data to reduce power consumption of a terminal in a cellular system, including the steps of: a) establishing discontinuous reception/transmission (DRX/DTX) parameters including discontinuous DRX/DTX cycle information for terminals operating in a transmission suspension mode, which is a sub-state of an active state; and b) performing DRX/DTX based on the DRX/DTX parameters in the terminals operating in the transmission suspension mode.Type: ApplicationFiled: January 17, 2022Publication date: May 12, 2022Applicant: Electronics and Telecommunications Research InstituteInventors: Jae-Heung Kim, Byung-Han Ryu, Seung-Chan Bang
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Patent number: 11330540Abstract: A method of 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, each cell group including at least two cells, 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: GrantFiled: August 28, 2018Date of Patent: May 10, 2022Assignee: Electronics and Telecommunications Research InstituteInventors: Il Gyu Kim, Hyeong Geun Park, Young Jo Ko, Kapseok Chang, Hyo Seok Yi, Young Hoon Kim, Seung Chan Bang
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Patent number: 11240754Abstract: Provided is a method and apparatus for discontinuously transmitting/receiving packets for low-power consumption of a terminal in a cellular system for packet transmission. The present research provides a method and apparatus that can perform a low-power consuming operation when a terminal is in active state in a cellular system. The method for discontinuously transmitting/receiving packet data to reduce power consumption of a terminal in a cellular system, including the steps of: a) establishing discontinuous reception/transmission (DRX/DTX) parameters including discontinuous DRX/DTX cycle information for terminals operating in a transmission suspension mode, which is a sub-state of an active state; and b) performing DRX/DTX based on the DRX/DTX parameters in the terminals operating in the transmission suspension mode.Type: GrantFiled: June 1, 2019Date of Patent: February 1, 2022Assignee: Electronics and Telecommunications Research InstituteInventors: Jae-Heung Kim, Byung-Han Ryu, Seung-Chan Bang
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Patent number: 11076383Abstract: Provided is a method for transmitting paging information in a cellular system. An object of the method is transmitting paging information which can improve applicability of a limited radio resource by variably and flexibly setting up and mapping a transport channel and a physical channel in order to transmit information notifying start of downlink information from a base station to a terminal in a cellular system for packet transmission. The method includes the steps of: forming a paging channel (PCH) in a transport channel corresponding to generation of paging information; setting a paging indication channel (PICH) based on the paging information and forming the paging indication channel in a radio resource of a physical layer; and allocating the paging channel to the radio resource of the physical layer.Type: GrantFiled: January 28, 2019Date of Patent: July 27, 2021Assignee: Electronics and Telecommunications Research Inst.Inventors: Jae Heung Kim, Jung Im Kim, Kyoung Seok Lee, Soo Jung Jung, Seung Chan Bang, Byung Han Ryu
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Publication number: 20210160847Abstract: 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: ApplicationFiled: February 6, 2021Publication date: May 27, 2021Inventors: Young-Jo KO, Hyeong-Geun PARK, Il-Gyu KIM, Kapseok CHANG, Hyoseok Yi, Young-Hoon Kim, Seung-Chan Bang
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Publication number: 20210143873Abstract: A wireless communication method and apparatus in a wireless local area network (WLAN) system are disclosed.Type: ApplicationFiled: January 21, 2021Publication date: May 13, 2021Inventors: Yu Ro LEE, Jae Woo PARK, Jae Seung LEE, Jee Yon CHOI, Il Gyu KIM, Seung Chan BANG
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Publication number: 20210092713Abstract: Provided is a method for transmitting paging information in a cellular system. An object of the method is transmitting paging information which can improve applicability of a limited radio resource by variably and flexibly setting up and mapping a transport channel and a physical channel in order to transmit information notifying start of downlink information from a base station to a terminal in a cellular system for packet transmission. The method includes the steps of: forming a paging channel (PCH) in a transport channel corresponding to generation of paging information; setting a paging indication channel (PICH) based on the paging information and forming the paging indication channel in a radio resource of a physical layer; and allocating the paging channel to the radio resource of the physical layer.Type: ApplicationFiled: December 3, 2020Publication date: March 25, 2021Applicant: Electronics and Telecommunications Research InstituteInventors: Jae Heung KIM, Jung Im KIM, Kyoung Seok LEE, Soo Jung JUNG, Seung Chan BANG, Byung Han RYU
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Publication number: 20210058798Abstract: Disclosed are a frame transmission method using a selective beamforming and a communication apparatus to perform the frame transmission method. The communication apparatus may determine a beamforming matrix based on classification information in which a plurality of subcarriers used for communication is classified into a plurality of frequency units, may map a long training field (LTF) sequence to the beamforming matrix, and transmit a beamforming training (BF-T) frame including the mapped LTF sequence to a plurality of stations, may receive, from the plurality of stations having receiving the BF-T frame, feedback information generated based on a reception strength of the BF-T frame, and may allocate frequency units to data frames to be transmitted to the plurality of stations based on the feedback information, and transmit the data frames using the allocated frequency units. The reception strength of the BF-T frame may be determined at each station for each frequency unit.Type: ApplicationFiled: November 10, 2020Publication date: February 25, 2021Applicant: Electronics and Telecommunications Research InstituteInventors: Yu Ro LEE, Jae Woo PARK, Jae Seung LEE, Jee Yon CHOI, Il Gyu KIM, Seung Chan BANG
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Patent number: 10931336Abstract: A wireless communication method and apparatus in a wireless local area network (WLAN) system are disclosed. A wireless communication method according to one embodiment may include generating a high-efficiency Wi-Fi (HEW) frame including at least one of an HEW-SIG-A field and an HEW-SIG-B field which include channel information for communications according to an Orthogonal Frequency-Division Multiple Access (OFDMA) mode, and transmitting the generated HEW frame to a reception apparatus.Type: GrantFiled: June 13, 2019Date of Patent: February 23, 2021Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Yu Ro Lee, Jae Woo Park, Jae Seung Lee, Jee Yon Choi, Il Gyu Kim, Seung Chan Bang
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Patent number: 10917877Abstract: 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: GrantFiled: January 22, 2019Date of Patent: February 9, 2021Assignee: Electronics and Telecommunications Research InstituteInventors: Young-Jo Ko, Hyeong-Geun Park, Il-Gyu Kim, Kapseok Chang, Hyoseok Yi, Young-Hoon Kim, Seung-Chan Bang
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Patent number: 10887865Abstract: Provided is a method for transmitting paging information in a cellular system. An object of the method is transmitting paging information which can improve applicability of a limited radio resource by variably and flexibly setting up and mapping a transport channel and a physical channel in order to transmit information notifying start of downlink information from a base station to a terminal in a cellular system for packet transmission. The method includes the steps of: forming a paging channel (PCH) in a transport channel corresponding to generation of paging information; setting a paging indication channel (PICH) based on the paging information and forming the paging indication channel in a radio resource of a physical layer; and allocating the paging channel to the radio resource of the physical layer.Type: GrantFiled: January 28, 2019Date of Patent: January 5, 2021Assignee: Electronics and Telecommunications Research InstituteInventors: Jae Heung Kim, Jung Im Kim, Kyoung Seok Lee, Soo Jung Jung, Seung Chan Bang, Byung Han Ryu
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Patent number: 10869205Abstract: Disclosed are a frame transmission method using a selective beamforming and a communication apparatus to perform the frame transmission method. The communication apparatus may determine a beamforming matrix based on classification information in which a plurality of subcarriers used for communication is classified into a plurality of frequency units, may map a long training field (LTF) sequence to the beamforming matrix, and transmit a beamforming training (BF-T) frame including the mapped LTF sequence to a plurality of stations, may receive, from the plurality of stations having receiving the BF-T frame, feedback information generated based on a reception strength of the BF-T frame, and may allocate frequency units to data frames to be transmitted to the plurality of stations based on the feedback information, and transmit the data frames using the allocated frequency units. The reception strength of the BF-T frame may be determined at each station for each frequency unit.Type: GrantFiled: October 22, 2019Date of Patent: December 15, 2020Assignee: Electronics and Telecommunications Research InstituteInventors: Yu Ro Lee, Jae Woo Park, Jae Seung Lee, Jee Yon Choi, Il Gyu Kim, Seung Chan Bang
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Publication number: 20200336261Abstract: Disclosed are a frame transmission method and a communication device performing the same. The communication device transmits a null data packet (NDP)-announcement (NDP-A) including information on a plurality of communication devices participating in interference alignment and transmits an NDP including a common signal field and a common training field commonly applied to the plurality of communication devices.Type: ApplicationFiled: July 6, 2020Publication date: October 22, 2020Inventors: Yu Ro LEE, Jae Woo PARK, Jae Seung LEE, Jee Yon CHOI, Il Gyu KIM, Seung Chan BANG
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Patent number: 10708026Abstract: Disclosed are a frame transmission method and a communication device performing the same. The communication device may transmit a null data packet (NDP)-announcement (NDP-A) including information on a plurality of communication devices participating in interference alignment and transmit an NDP including a common signal field and a common training field commonly applied to the plurality of communication devices.Type: GrantFiled: July 23, 2018Date of Patent: July 7, 2020Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Yu Ro Lee, Jae Woo Park, Jae Seung Lee, Jee Yon Choi, Il Gyu Kim, Seung Chan Bang
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Publication number: 20200053576Abstract: Disclosed are a frame transmission method using a selective beamforming and a communication apparatus to perform the frame transmission method. The communication apparatus may determine a beamforming matrix based on classification information in which a plurality of subcarriers used for communication is classified into a plurality of frequency units, may map a long training field (LTF) sequence to the beamforming matrix, and transmit a beamforming training (BF-T) frame including the mapped LTF sequence to a plurality of stations, may receive, from the plurality of stations having receiving the BF-T frame, feedback information generated based on a reception strength of the BF-T frame, and may allocate frequency units to data frames to be transmitted to the plurality of stations based on the feedback information, and transmit the data frames using the allocated frequency units. The reception strength of the BF-T frame may be determined at each station for each frequency unit.Type: ApplicationFiled: October 22, 2019Publication date: February 13, 2020Applicant: Electronics and Telecommunications Research InstituteInventors: Yu Ro LEE, Jae Woo PARK, Jae Seung LEE, Jee Yon CHOI, Il Gyu KIM, Seung Chan BANG
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Patent number: RE47910Abstract: 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: GrantFiled: March 17, 2017Date of Patent: March 17, 2020Assignee: Electronics and Telecommunications Research InstituteInventors: Kap Seok Chang, Il Gyu Kim, Hyeong Geun Park, Young Jo Ko, Hyo Seok Yi, Moon Sik Lee, Young Hoon Kim, Seung Chan Bang
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Patent number: RE48969Abstract: Disclosed is a method and apparatus for RA in a cellular system. The RA in the cellular system includes receiving an RA preamble from a terminal for RA, transmitting, to the terminal, an RA response message including a sequence of the received RA preamble and uplink resource information of the terminal and overload state information with respect to the RA, receiving control information generated based on the RA response message from the terminal through the uplink resource information, and transmitting control response information with respect to the received control information.Type: GrantFiled: August 4, 2016Date of Patent: March 8, 2022Assignee: Electronics and Telecommunications Research InstituteInventors: Jae Heung Kim, Kyoung Seok Lee, Jung-Im Kim, Byung-Han Ryu, Seung Chan Bang
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Patent number: RE48984Abstract: Provided is a method and apparatus for discontinuously transmitting/receiving packets for low-power consumption of a terminal in a cellular system for packet transmission. The present invention provides a method and apparatus that can perform a low-power consuming operation when a terminal is in active state in a cellular system. The method for discontinuously transmitting/receiving packet data to reduce power consumption of a terminal in a cellular system, including the steps of: a) establishing discontinuous transmission/reception (DTX/DRX) parameters including discontinuous DTX/DRX cycle information for terminals operating in a transmission suspension mode, which is a sub-state of an active state; and b) performing DTX/DRX based on the DTX/DRX parameters in the terminals operating in the transmission suspension mode.Type: GrantFiled: December 28, 2018Date of Patent: March 22, 2022Assignee: Electronics and Telecommunications Research InstituteInventors: Jae-Heung Kim, Jung-Im Kim, Kyoung-Seok Lee, Byung-Han Ryu, Seung-Chan Bang