Patents by Inventor Choong-Il Yeh
Choong-Il Yeh 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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Publication number: 20230362950Abstract: A method for receiving a PDCCH by a terminal in a mobile communication system may comprise the steps of: receiving a first PDCCH including first DCI from a base station through a first PDCCH search space; and receiving a second PDCCH including second DCI from the base station through a second PDCCH search space, wherein the first DCI and second DCI are for scheduling the same PDSCH for the same TB or TBs associated with the same HARQ process, are for scheduling different PDSCHs for the same TB or TBs associated with the same HARQ process, or are for scheduling different PDSCHs for different TBs or TBs associated with different HARQ processes. In addition, the first DCI and second DCI may be received from the base station within a time window.Type: ApplicationFiled: July 18, 2023Publication date: November 9, 2023Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Sung Hyun MOON, Cheul Soon KIM, Jung Hoon LEE, Min Hyun KIM, Ji Hung KIM, Ju Ho PARK, CHOONG IL YEH, Jun Hwan LEE
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Patent number: 11751215Abstract: A method for receiving a PDCCH by a terminal in a mobile communication system may comprise the steps of: receiving a first PDCCH including first DCI from a base station through a first PDCCH search space; and receiving a second PDCCH including second DCI from the base station through a second PDCCH search space, wherein the first DCI and second DCI are for scheduling the same PDSCH for the same TB or TBs associated with the same HARQ process, are for scheduling different PDSCHs for the same TB or TBs associated with the same HARQ process, or are for scheduling different PDSCHs for different TBs or TBs associated with different HARQ processes. In addition, the first DCI and second DCI may be received from the base station within a time window.Type: GrantFiled: November 9, 2021Date of Patent: September 5, 2023Assignee: Electronics and Telecommunications Research InstituteInventors: Sung Hyun Moon, Cheul Soon Kim, Jung Hoon Lee, Min Hyun Kim, Ji Hung Kim, Ju Ho Park, Choong Il Yeh, Jun Hwan Lee
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Publication number: 20220386288Abstract: A method for indicating preemption in a communication system is disclosed. A method for operating a terminal comprises the steps of: receiving, from a base station, information indicating a first resource area, to which a preemption-capable resource belongs, for transmission of first data; receiving resource allocation information of second data from the base station; performing a monitoring operation for detecting a PI indicating a preempted resource for transmission of the first data in the first resource area, when the first resource area overlaps with a second resource area indicated by the resource allocation information; and performing decoding on the basis of the detected PI. Therefore, the performance of the communication system may be improved.Type: ApplicationFiled: August 8, 2022Publication date: December 1, 2022Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Jung Hoon LEE, Jung Bin KIM, Cheul Soon KIM, Sung Hyun MOON, CHOONG IL YEH
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Method for indicating preemption in a communication system using a bitmap corresponding to resources
Patent number: 11452093Abstract: A method for indicating preemption in a communication system is disclosed. A method for operating a terminal comprises the steps of: receiving, from a base station, information indicating a first resource area, to which a preemption-capable resource belongs, for transmission of first data; receiving resource allocation information of second data from the base station; performing a monitoring operation for detecting a PI indicating a preempted resource for transmission of the first data in the first resource area, when the first resource area overlaps with a second resource area indicated by the resource allocation information; and performing decoding on the basis of the detected PI. Therefore, the performance of the communication system may be improved.Type: GrantFiled: September 12, 2018Date of Patent: September 20, 2022Assignee: Electronics and Telecommunications Research InstituteInventors: Jung Hoon Lee, Jung Bin Kim, Cheul Soon Kim, Sung Hyun Moon, Choong Il Yeh -
Publication number: 20220104185Abstract: A method for receiving a PDCCH by a terminal in a mobile communication system may comprise the steps of: receiving a first PDCCH including first DCI from a base station through a first PDCCH search space; and receiving a second PDCCH including second DCI from the base station through a second PDCCH search space, wherein the first DCI and second DCI are for scheduling the same PDSCH for the same TB or TBs associated with the same HARQ process, are for scheduling different PDSCHs for the same TB or TBs associated with the same HARQ process, or are for scheduling different PDSCHs for different TBs or TBs associated with different HARQ processes. In addition, the first DCI and second DCI may be received from the base station within a time window.Type: ApplicationFiled: November 9, 2021Publication date: March 31, 2022Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Sung Hyun MOON, Cheul Soon KIM, Jung Hoon LEE, Min Hyun KIM, Ji Hung KIM, Ju Ho PARK, CHOONG IL YEH, Jun Hwan LEE
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Patent number: 11206655Abstract: A method for receiving a PDCCH by a terminal in a mobile communication system may comprise the steps of: receiving a first PDCCH including first DCI from a base station through a first PDCCH search space; and receiving a second PDCCH including second DCI from the base station through a second PDCCH search space, wherein the first DCI and second DCI are for scheduling the same PDSCH for the same TB or TBs associated with the same HARQ process, are for scheduling different PDSCHs for the same TB or TBs associated with the same HARQ process, or are for scheduling different PDSCHs for different TBs or TBs associated with different HARQ processes. In addition, the first DCI and second DCI may be received from the base station within a time window.Type: GrantFiled: August 8, 2018Date of Patent: December 21, 2021Assignee: Electronics and Telecommunications Research InstituteInventors: Sung Hyun Moon, Cheul Soon Kim, Jung Hoon Lee, Min Hyun Kim, Ji Hung Kim, Ju Ho Park, Choong Il Yeh, Jun Hwan Lee
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Publication number: 20200288463Abstract: A method for indicating preemption in a communication system is disclosed. A method for operating a terminal comprises the steps of: receiving, from a base station, information indicating a first resource area, to which a preemption-capable resource belongs, for transmission of first data; receiving resource allocation information of second data from the base station; performing a monitoring operation for detecting a PI indicating a preempted resource for transmission of the first data in the first resource area, when the first resource area overlaps with a second resource area indicated by the resource allocation information; and performing decoding on the basis of the detected PI. Therefore, the performance of the communication system may be improved.Type: ApplicationFiled: September 12, 2018Publication date: September 10, 2020Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Jung Hoon LEE, Jung Bin KIM, Cheul Soon KIM, Sung Hyun MOON, CHOONG IL YEH
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Publication number: 20200221428Abstract: A method for receiving a PDCCH by a terminal in a mobile communication system may comprise the steps of: receiving a first PDCCH including first DCI from a base station through a first PDCCH search space; and receiving a second PDCCH including second DCI from the base station through a second PDCCH search space, wherein the first DCI and second DCI are for scheduling the same PDSCH for the same TB or TBs associated with the same HARQ process, are for scheduling different PDSCHs for the same TB or TBs associated with the same HARQ process, or are for scheduling different PDSCHs for different TBs or TBs associated with different HARQ processes. In addition, the first DCI and second DCI may be received from the base station within a time window.Type: ApplicationFiled: August 8, 2018Publication date: July 9, 2020Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Sung Hyun MOON, Cheul Soon KIM, Jung Hoon LEE, Min Hyun KIM, Ji Hung KIM, Ju Ho PARK, CHOONG IL YEH, Jun Hwan LEE
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Publication number: 20190082456Abstract: A method of transmitting a grant-free uplink data channel (physical uplink shared channel (PUSCH)) (GF-PUSCH), performed in a terminal, includes determining a resource (GF-PUSCH resource) for transmission of the GF-PUSCH and an identifier (DM-RS ID) of a demodulation reference signal (DM-RS) included in the GF-PUSCH; when an uplink traffic arrives, encoding the uplink traffic into a transport block (TB); generating the DM-RS based on the DM-RS ID, and transmitting the GF-PUSCH including the TB and the DM-RS to a base station through the GF-PUSCH resource; and receiving, from the base station, a group hybrid automatic repeat request acknowledgement (HARQ-ACK) information in which ACK or negative acknowledgement (ACK/NACK) information for the GF-PUSCH of the terminal and ACK/NACK information for at least one GF-PUSCH of at least one other terminal are multiplexed, through a downlink control information (DCI).Type: ApplicationFiled: September 7, 2018Publication date: March 14, 2019Inventors: Cheul Soon KIM, Sung Hyun MOON, Choong Il YEH, Jung Hoon LEE
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Patent number: 9510161Abstract: Disclosed are methods and apparatuses for public safety communication. A method comprises transmitting a groupcast setup request message to a base station; receiving an uplink grant message including information on groupcast resources in response to the groupcast setup request message from the base station; and transmitting data to be transmitted to receiving terminals belonging to a group to which the transmitting terminal belongs to the base station through the groupcast resources. Therefore, public safety communication can be efficiently performed in a wireless communication system.Type: GrantFiled: July 7, 2014Date of Patent: November 29, 2016Assignee: ELECTRONICS & TELECOOMUNICATIONS RESEARCH INSTITUTEInventors: Choong Il Yeh, Jae Young Ahn, Tae Gyun Noh, Dong Hyun Ahn
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Patent number: 9503171Abstract: Disclosed is a method for transmitting radio frequency signals. In the method according to the present invention, a plurality of antenna groups may be arranged for achieving array gain and multiplexing gain at the same time, and the plurality of antenna groups are located far from each other so that they have no correlation, and antennas of the same group are located adjacent to each other so that they have correlation. Accordingly, system capacity as well as capacity of data channel and control channel may be significantly increased through mitigation of inter-cell interference and enhancement of cell edge performance.Type: GrantFiled: January 3, 2014Date of Patent: November 22, 2016Assignee: Electronics and Telecommunications Research InstituteInventors: Choong Il Yeh, Jae Young Ahn
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Patent number: 9426795Abstract: Disclosed is a method for configuring and transmitting control channel for radio communication. A method for configuring control channel comprises a step of configuring a control channel by using a plurality of tiles, wherein numbers of resource elements in the plurality of tiles are configured to be the same or different. If a method for transmitting control information comprising a small number of bits according to the present invention is used, quality of communication and efficiency of resource may be increased at the same time.Type: GrantFiled: December 11, 2013Date of Patent: August 23, 2016Assignee: Electronics and Telecommunications Research InstituteInventors: Choong Il Yeh, Tae Gyun Noh, Jae Young Ahn
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Patent number: 9398554Abstract: Disclosed is a method for network synchronization acquisition in a wireless network. A synchronized node transmits a first synchronization reference signal, a second synchronization reference signal, and a beacon according to a predetermined period. A non-synchronized node receives the first synchronization reference signal, the second synchronization signal, and the beacon from at least one transmitting node. Then, the non-synchronized node acquires network synchronization temporarily based on the first synchronization reference signal, decodes the beacon, and checks whether at least one transmitting node exists or not. Then, the non-synchronized node requests a network synchronization forwarding service or a time adjustment, and acquires synchronization based on the provided network synchronization forwarding service.Type: GrantFiled: May 30, 2014Date of Patent: July 19, 2016Assignee: Electronics & Telecommunications Research InstituteInventors: Choong Il Yeh, Jae Young Ahn, Tae Gyun Noh
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Patent number: 9215693Abstract: Provided is a radio resource management method for device-to-device communication. The resource management method for device-to-device communication includes dividing a plurality of connection identifiers (CIDs) into N (N is a natural number) number of groups, dividing the resources for device-to-device communication into N number of sub-bands corresponding to the N number of groups, and allocating resources by mapping CIDs respectively belonging to the N number of groups to resources of sub-bands respectively corresponding to the groups. Therefore, according to the resource management method, by dividing the whole frequency band into a plurality of sub-bands, a communication range may be extended, a low-power device may be accommodated, granularity of resources may be improved, and flexibility of resource management may be obtained.Type: GrantFiled: November 2, 2012Date of Patent: December 15, 2015Assignee: Electronics and Telecommunications Research InstituteInventors: Jae Young Ahn, Choong Il Yeh
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Publication number: 20150009881Abstract: Disclosed are methods and apparatuses for public safety communication. A method comprises transmitting a groupcast setup request message to a base station; receiving an uplink grant message including information on groupcast resources in response to the groupcast setup request message from the base station; and transmitting data to be transmitted to receiving terminals belonging to a group to which the transmitting terminal belongs to the base station through the groupcast resources. Therefore, public safety communication can be efficiently performed in a wireless communication system.Type: ApplicationFiled: July 7, 2014Publication date: January 8, 2015Applicant: Electronics & Telecommunications Research InstituteInventors: Choong Il YEH, Jae Young AHN, Tae Gyun NOH, Dong Hyun AHN
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Publication number: 20150011230Abstract: Disclosed are a coordinator based device-to-device communication method and an apparatus for the same. The communication method may comprise transmitting a synchronization signal and system information to a plurality of terminals; configuring wireless links with the plurality of terminals based on a random access procedure; receiving a scheduling message for a D2D communication from a first terminal among the plurality of terminals; allocating, to the first terminal, a transmission resource to be used for the first terminal to transmit data based on the scheduling request message; and allocating, to a second terminal performing the D2D communication with the first terminal among the plurality of terminals, a reception resource to be used for the second terminal to receive the data transmitted from the first terminal.Type: ApplicationFiled: July 7, 2014Publication date: January 8, 2015Applicant: Electronics & Telecommunications Research InstituteInventors: Tae Gyun NOH, Jae Young AHN, Choong Il YEH
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Publication number: 20140355597Abstract: Disclosed is a method for network synchronization acquisition in a wireless network. A synchronized node transmits a first synchronization reference signal, a second synchronization reference signal, and a beacon according to a predetermined period. A non-synchronized node receives the first synchronization reference signal, the second synchronization signal, and the beacon from at least one transmitting node. Then, the non-synchronized node acquires network synchronization temporarily based on the first synchronization reference signal, decodes the beacon, and checks whether at least one transmitting node exists or not. Then, the non-synchronized node requests a network synchronization forwarding service or a time adjustment, and acquires synchronization based on the provided network synchronization forwarding service.Type: ApplicationFiled: May 30, 2014Publication date: December 4, 2014Applicant: Electronics & Telecommunications Research InstituteInventors: Choong Il YEH, Jae Young AHN, Tae Gyun NOH
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Patent number: 8848700Abstract: Disclosed is device-to-device communication based on a cellular communication network. A method of operating a terminal capable of supporting D2D (device to device) communication based on a cellular communication network may include: determining whether to perform central control D2D communication or distributed control D2D communication; and performing the distributed control D2D communication, or requesting a setting for the central control D2D communication to a base station on the basis of the determination. With the D2D communication based on the cellular communication network, the cellular communication, the central control D2D communication, or the distributed control D2D communication may flexibly and selectively operate in the cellular network.Type: GrantFiled: September 28, 2012Date of Patent: September 30, 2014Assignee: Electronics and Telecommunications Research InstituteInventors: Jae Young Ahn, Choong Il Yeh, Kyoung Seok Lee
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Patent number: 8805283Abstract: In a method of mitigating inter-cell interference, terminals are grouped into groups. A base station transmits data to a first terminal belonging to a first group among the groups, without cooperation with a neighboring base station. The base station transmits data to a second terminal belonging to a second group among the groups, through cooperation with the neighboring base station.Type: GrantFiled: January 16, 2009Date of Patent: August 12, 2014Assignees: Samsung Electronics Co., Ltd., Electronics and Telecommunications Research InstituteInventors: Choong Il Yeh, Young Seog Song, Seung Joon Lee, Byung-Jae Kwak, Ji Hyung Kim, Dong Seung Kwon
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Publication number: 20140192768Abstract: Disclosed is a method for transmitting radio frequency signals. In the method according to the present invention, a plurality of antenna groups may be arranged for achieving array gain and multiplexing gain at the same time, and the plurality of antenna groups are located far from each other so that they have no correlation, and antennas of the same group are located adjacent to each other so that they have correlation. Accordingly, system capacity as well as capacity of data channel and control channel may be significantly increased through mitigation of inter-cell interference and enhancement of cell edge performance.Type: ApplicationFiled: January 3, 2014Publication date: July 10, 2014Applicant: Electronics and Telecommunications Research InstituteInventors: Choong Il YEH, Jae Young AHN