Patents by Inventor Hyoseok Yi
Hyoseok Yi 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).
-
Publication number: 20240040569Abstract: 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: October 9, 2023Publication date: February 1, 2024Applicant: Electronics and Telecommunications Research InstituteInventors: Young-Jo KO, Hyeong-Geun PARK, Il-Gyu KIM, Kapseok CHANG, Hyoseok Yi, Young-Hoon Kim, Seung-Chan Bang
-
Patent number: 11785600Abstract: 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: February 6, 2021Date of Patent: October 10, 2023Assignee: Electronics and Telecommunications Research InstituteInventors: Young-Jo Ko, Hyeong-Geun Park, Il-Gyu Kim, Kapseok Chang, Hyoseok Yi, Young-Hoon Kim, Seung-Chan Bang
-
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
-
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
-
Publication number: 20190159190Abstract: 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: January 22, 2019Publication date: May 23, 2019Inventors: Young-Jo KO, Hyeong-Geun PARK, Il-Gyu KIM, Kapseok CHANG, Hyoseok Yi, Young-Hoon Kim, Seung-Chan Bang
-
Patent number: 10225824Abstract: 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: March 7, 2017Date of Patent: March 5, 2019Assignee: Electronics and Telecommunications Research InstituteInventors: Young-Jo Ko, Hyeong-Geun Park, Il-Gyu Kim, Kapseok Chang, Hyoseok Yi, Young-Hoon Kim, Seung-Chan Bang
-
Publication number: 20170181152Abstract: 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: March 7, 2017Publication date: June 22, 2017Inventors: Young-Jo KO, Hyeong-Geun PARK, Il-Gyu Kim, Kapseok CHANG, Hyoseok Yi, Young-Hoon Kim, Seung-Chan Bang
-
Patent number: 9602233Abstract: 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 31, 2013Date of Patent: March 21, 2017Assignee: Electronics and Telecommunications Research InstituteInventors: Young-Jo Ko, Hyeong-Geun Park, Il-Gyu Kim, Kapseok Chang, Hyoseok Yi, Young-Hoon Kim, Seung-Chan Bag
-
Publication number: 20160345265Abstract: A long range, low power, low cost, wireless communication system that has a location determination capability (location fix) and optionally a direct control capability (“On Demand” control) at optimal power and communication resource overhead. The system can be used for device initiated (DI) communications and for network initiated (NI) communications. The location fix can be an assisted location fix, using a GPS-assisted device, a WiFi-assisted device, or both a GPS- and a WiFi-assisted device. For situations when neither WiFi nor GPS are available, a network-based location fix provides location information, which can be augmented by home cell (HC) ranging information. Various embodiments of the system and methods related to the systems are provided.Type: ApplicationFiled: April 8, 2016Publication date: November 24, 2016Inventors: Brian Lee, Hyoseok Yi
-
Patent number: 9450796Abstract: Provided is a method of forming a random access preamble structure for an extended cell radius in a cellular system, the method including: generating a cyclic prefix (CP), which is the sum of a maximum delay spread and the maximum round trip delay according to the extended cell; generating a preamble sequence part. The method is used to form a preamble structure for an extended cell radius from among random access preamble structures transmitted when initial synchronization is achieved, when synchronization is lost, or when a handover is performed, during a random access process of the cellular system.Type: GrantFiled: January 4, 2008Date of Patent: September 20, 2016Assignees: Electronics and Telecommunications Research Institute, Samsung Electronics Co., Ltd.Inventors: Moon-Sik Lee, Hye-Kyung Jwa, Hyoseok Yi, Young-Hoon Kim, Seung-Chan Bang
-
Patent number: 9036458Abstract: A method is provided for forming a signal in a wireless communication system in which a plurality of terminals commonly use time and frequency resources for efficient code hopping. The method includes allocating the same frequency-axis sequence and different time-axis sequences to a plurality of terminals by using a resource index according to a first slot in the first slot; and allocating different frequency-axis sequences and different time-axis sequences to the plurality of terminals by using a resource index according to a second slot in the second slot.Type: GrantFiled: October 23, 2012Date of Patent: May 19, 2015Assignees: Samsung Electronics Co., Ltd, Electronics and Telecommunications Research InstituteInventors: Young-Jo Ko, Hyeong-Geun Park, Il-Gyu Kim, Kapseok Chang, Hyoseok Yi, Young-Hoon Kim, Seung-Chan Bang
-
Patent number: 8817770Abstract: Provided are a sync channel of a forward link, a common pilot channel structure, and an initial cell search method and an adjacent cell search method for handover in a cellular system using orthogonal frequency division multiplexing (OFDM). A cell search method in an OFDM cellular system in which a primary sync channel and a secondary sync channel are configured based on time division multiplexing (TDM) includes acquiring sync block synchronization and a primary sync channel sequence number using a primary sync channel symbol included in a frame received by a terminal, detecting a boundary of the frame and a scrambling code group using the sync block and a secondary sync channel symbol included in the frame received by the terminal, and acquiring a scrambling code using the primary sync channel sequence number and the scrambling code group, thereby reducing cell search time with low complexity.Type: GrantFiled: April 17, 2009Date of Patent: August 26, 2014Assignees: Electronics and Telecommunications Research Institute, Samsung Electronics Co., Ltd.Inventors: Il-Gyu Kim, Hyeong-Geun Park, Young-Jo Ko, Kapseok Chang, Hyoseok Yi, Jun-Hwan Lee, Young-Hoon Kim, Seung-Chan Bang
-
Patent number: 8811301Abstract: Provided is a method of efficiently transmitting an acknowledgement/negative acknowledgement (ACK/NACK) bit supporting hybrid automatic repeat request (HARQ) in a wireless communication system supporting multi-user multi-input and multi-output (MIMO). The method transmits the same downlink code and in-phase/quadrature (I/Q) multiplexed ACK/NACK bit to two mobile stations using the same uplink resource block. Accordingly, the method can efficiently transmit the ACK/NACK bit for multi-user MIMO and efficiently use downlink radio resources.Type: GrantFiled: June 13, 2008Date of Patent: August 19, 2014Assignees: Electronics and Telecommunications Research Institute, Samsung Electronics Co., LtdInventors: Il-Gyu Kim, Hyeong-Geun Park, Young-Jo Ko, Kapseok Chang, Hyoseok Yi, Young-Hoon Kim, Seung-Chan Bang
-
Patent number: 8724444Abstract: Provided is method of forming a signal in a wireless communication system in which a plurality of terminals commonly use a resource in the time domain and the frequency domain. The method includes multiplying a signal to be transmitted by a frequency domain orthogonal code symbol corresponding to a first cyclic shift index in a first slot to be transmitted to a base station, wherein the multiplying is performed by a first terminal and a second terminal; and multiplying information to be transmitted by a frequency domain orthogonal code symbol corresponding to a second cyclic index that is different from the first cyclic index of the first slot to be transmitted to the base station, in a second slot, wherein the multiplying is performed by the first terminal and the second terminal.Type: GrantFiled: August 20, 2012Date of Patent: May 13, 2014Assignees: Electronics and Telecommunications Research Institute, Samsung Electronics Co., Ltd.Inventors: Young-Jo Ko, Hyeong-Geun Park, Il-Gyu Kim, Kapseok Chang, Hyoseok Yi, Young-Hoon Kim, Seung-Chan Bang
-
Patent number: 8406218Abstract: A method of and an apparatus therefor 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, and each cell group includes at least two cells. The method 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: September 14, 2012Date of Patent: March 26, 2013Assignee: Electronics and Telecommunications Research InstituteInventors: Il-Gyu Kim, Hyeong-Geun Park, Young-Jo Ko, Kapseok Chang, Hyoseok Yi, Young-Hoon Kim, Seung-Chan Bang
-
Patent number: 8391232Abstract: 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: June 23, 2008Date of Patent: March 5, 2013Assignees: Electronics and Telecommunications Research Institute, KT CorporationInventors: Young-Jo Ko, Hyeong-Geun Park, Il-Gyu Kim, Kapseok Chang, Hyoseok Yi, Young-Hoon Kim, Seung-Chan Bang
-
Publication number: 20130010770Abstract: A method of and an apparatus therefor 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, and each cell group includes at least two cells. The method 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: ApplicationFiled: September 14, 2012Publication date: January 10, 2013Applicant: Electronics and Telecommunications Research InstituteInventors: Il-Gyu KIM, Hyeong-Geun PARK, Young-Jo KO, Kapseok CHANG, Hyoseok YI, Young-Hoon KIM, Seung-Chan BANG
-
Publication number: 20120307789Abstract: Provided is method of forming a signal in a wireless communication system in which a plurality of terminals commonly use a resource in the time domain and the frequency domain. The method includes multiplying a signal to be transmitted by a frequency domain orthogonal code symbol corresponding to a first cyclic shift index in a first slot to be transmitted to a base station, wherein the multiplying is performed by a first terminal and a second terminal; and multiplying information to be transmitted by a frequency domain orthogonal code symbol corresponding to a second cyclic index that is different from the first cyclic index of the first slot to be transmitted to the base station, in a second slot, wherein the multiplying is performed by the first terminal and the second terminal.Type: ApplicationFiled: August 20, 2012Publication date: December 6, 2012Applicants: SAMSUNG ELECTRONICS CO., LTD, ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Young-Jo KO, Hyeong-Geun PARK, Il-Gyu KIM, Kapseok CHANG, Hyoseok YI, Young-Hoon KIM, Seung-Chan BANG
-
Patent number: 8311031Abstract: A method of and an apparatus therefor 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, and each cell group includes at least two cells. The method 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: February 28, 2011Date of Patent: November 13, 2012Assignee: Electronics and Telecommunications Research InstituteInventors: Il-Gyu Kim, Hyeong-Geun Park, Young-Jo Ko, Kapseok Chang, Hyoseok Yi, Young-Hoon Kim, Seung-Chan Bang
-
Patent number: 8295152Abstract: Provided is a method of forming a signal in a wireless communication system in which a plurality of terminals commonly use time and frequency resources for efficient code hopping. The method includes allocating the same frequency-axis sequence and different time-axis sequences to a plurality of terminals by using a resource index according to a first slot in the first slot; and allocating different frequency-axis sequences and different time-axis sequences to the plurality of terminals by using a resource index according to a second slot in the second slot.Type: GrantFiled: June 16, 2008Date of Patent: October 23, 2012Assignees: Electronics and Telecommunications Research Institute, Samsung Electronics Co., LtdInventors: Young-Jo Ko, Hyeong-Geun Park, Il-Gyu Kim, Kapseok Chang, Hyoseok Yi, Young-Hoon Kim, Seung-Chan Bang