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公开(公告)号：US09923612B2
公开(公告)日：2018-03-20
申请号：US14762159
申请日：2014-01-15
申请人： Samsung Electronics Co., Ltd. , Korea National University of Transportation Industry Academic Cooperation Foundation
发明人： Hyoungju Ji , Cheol Mun , Younsun Kim , Juho Lee , Hyojin Lee , Joonyoung Cho
IPC分类号： H04B7/0413 , H04B7/26 , H04B7/06 , H04L5/00 , H04W72/12
CPC分类号： H04B7/0413 , H04B7/0697 , H04B7/2621 , H04L5/0023 , H04L5/0048 , H04W72/1273
摘要： The present invention proposes a hybrid spatial multiplexing (SM) and a space division multiple access (SDMA) technique in a frequency division duplex (FDD) massive multiple-input multiple output (MIMO) system using a two-dimensional planar array antenna, which effectively transmits a channel state information reference signal (CSI-RS) for estimating a downlink two-dimensional space channel using only a limited amount of downlink radio resources, and optimally selects and performs the SM and SDMA techniques in a two-dimensional space channel. To this end, the present invention proposes a technique which defines space resource blocks (SRB) by grouping space elements (SE) having a high spatial correlation between downlink channels in the horizontal dimension and corresponding SEs thereof in the vertical dimension, and transmits CSI-RSs for estimating channels in vertical dimension SEs corresponding to one selected horizontal SE in each SRB every transmit time interval (TTI). The present invention proposes a technique wherein user equipment (UE) estimates the spatial correlation between channels of different horizontal dimension SEs belonging to the same SRB received in different TTIs and the spatial correlation between channels of horizontal dimension SEs belonging to different SRBs received in the same TTI, and feeds information for changing the size of SRB of the corresponding UE to an optimal size back to eNodeB. The present invention proposes a technique wherein the UE estimates downlink channels through CSI-RSs transmitted from each SRB, and each UE feeds an index of a preferred SRB, a rank of the corresponding SRB in the vertical dimension, and channel quality information (CQI) back to eNodeB. When each UE determines the rank, it is possible to transmit the ranks to the fullest extent in the vertical dimension and only a single rank from each SRB in the horizontal dimension.
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公开(公告)号：US12132596B2
公开(公告)日：2024-10-29
申请号：US17440029
申请日：2020-03-06
发明人： Hyoungju Ji , Taehyoung Kim , Heecheol Yang
IPC分类号： H04L5/00 , H04L27/26 , H04W72/04 , H04W72/044 , H04W72/23
CPC分类号： H04L27/2636 , H04L5/0007 , H04W72/044 , H04W72/23
摘要： The present disclosure relates to a communication technique for combining IoT technology and a 5G communication system for supporting a higher data transmission rate than a 4G system, and a system therefor. The present disclosure may be applied to intelligent services (e.g., smart home, smart building, smart city, smart car or connected car, healthcare, digital education, retail, security- and safety-related services, etc.) on the basis of 5G communication technology and IoT-related technology. According to an embodiment of the present disclosure, a method by a base station in a wireless communication system comprises the steps of: transmitting, to a terminal, downlink control information comprising resource allocation information for a virtual domain and resource allocation information for a physical downlink shared channel (PDSCH); multiplexing the PDSCH in a virtual domain resource on the basis of the resource allocation information for the virtual domain; and performing discrete fourier transform (DFT) precoding for the multiplexed PDSCH.
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公开(公告)号：US11937264B2
公开(公告)日：2024-03-19
申请号：US17877849
申请日：2022-07-29
发明人： Hoondong Noh , Taehyoung Kim , Hyoungju Ji , Jinhyun Park , Heecheol Yang
IPC分类号： H04W72/23
CPC分类号： H04W72/23
摘要： The disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. The disclosure discloses a signaling method and apparatus for properly increasing a control channel detection complexity of a terminal in order to efficiently detect a control channel for performing coordinated transmission such as non-coherent joint transmission (NC-JT).
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公开(公告)号：US11770285B2
公开(公告)日：2023-09-26
申请号：US17775734
申请日：2020-11-02
发明人： Hyoungju Ji , Juho Lee , Younsun Kim , Hoondong Noh
CPC分类号： H04L27/2636 , H04L1/0023 , H04L27/206 , H04L27/3411 , H04L27/3483
摘要： Provided are a method and apparatus for transmitting data in a wireless communication system. The method, performed by a transmission apparatus, of transmitting data includes performing π/2-binary phase shift keying (BPSK) modulation on M symbols, performing a discrete Fourier transform (DFT) on the M symbols on which the π/2-BPSK modulation has been performed, performing an inverse fast Fourier transform (IFFT) on M/2 symbols among the M symbols on which the DFT has been performed, and transmitting, to a reception apparatus, the M/2 symbols on which the IFFT has been performed, wherein a constellation of the M symbols on which the π/2-BPSK modulation has been performed may have only real components or imaginary components.
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公开(公告)号：US20230217442A1
公开(公告)日：2023-07-06
申请号：US18093103
申请日：2023-01-04
CPC分类号： H04W72/20 , H04L5/0092 , H04L1/18
摘要： The present disclosure relates to a 5G communication system or a 6G communication system for supporting higher data rates beyond a 4G communication system such as long term evolution (LTE). More specifically, a method performed by a user equipment (US) in a wireless communication system is provided, the method including transmitting, to a base station (BS), at least one first physical uplink shared channel (PUSCH) of a PUSCH repetition based on at least one first unified transmission configuration indicator (TCI) state, receiving, from the BS, downlink control information (DCI) including information indicating at least one second unified TCI state, and performing an operation for at least one second PUSCH of the PUSCH repetition based on the information, wherein the at least one second PUSCH of the PUSCH repetition is after a beam application time (BAT) from a physical uplink control channel (PUCCH) for the DCI.
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公开(公告)号：US11683810B2
公开(公告)日：2023-06-20
申请号：US17531041
申请日：2021-11-19
CPC分类号： H04W72/042 , H04L5/0048
摘要： The disclosure relates to a pre-5G or 5G communication system to be provided for supporting higher data rates beyond a 4G communication system, such as LTE. A method includes receiving, by a UE, PDCCH information from a network entity, where the PDCCH information includes DCI and PDSCH information, and determining, by the UE, the default beam behavior based on a CORESET with a lowest ID among first and second CORESETs, in response to determining that a TCI state is not present in the DCI and the scheduling offset between reception of all transmission occasions of DL DCI and the corresponding PDSCH information of the serving cell is greater than or equal to the threshold.
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7.发明申请公开(公告)号：US20230057558A1
公开(公告)日：2023-02-23
申请号：US17874823
申请日：2022-07-27
发明人： Seongmok LIM , Ameha Tsegaye Abebe , Junyung Yi , Youngrok Jang , Hyoungju Ji , Heedon Gha , Taehan Bae
摘要： Methods and apparatuses in a wireless communication system are provided. Capability information regarding the terminal is transmitted. The capability information is associated with an X division duplexing (XDD) system. Resource configuration information is received based on the resource configuration information. A resource on which uplink control information (UCI) is to be transmitted is determined. The UCI is transmitted on the determined resource. The XDD system configures an uplink resource and a downlink resource in a same slot in different frequency resources.
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公开(公告)号：US11489565B2
公开(公告)日：2022-11-01
申请号：US17366553
申请日：2021-07-02
发明人： Younsun Kim , Hyojin Lee , Hyoungju Ji , Juho Lee , Joonyoung Cho
IPC分类号： H04B7/02 , H04B7/0417 , H04B7/06 , H04L5/00 , H04B7/0456
摘要： A method by a terminal, a method by a base station, a terminal, and a base station are provided. The method by the terminal includes receiving a first channel state information reference signal (CSI-RS) and a second CSI-RS from a base station; generating channel state information (CSI) based on both the first CSI-RS and the second CSI-RS; and reporting the CSI to the base station, wherein the CSI includes a rank indicator (RI) and a channel quality indicator (CQI).
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9.发明授权公开(公告)号：US11219057B2
公开(公告)日：2022-01-04
申请号：US16791364
申请日：2020-02-14
发明人： Jinhyun Park , Hoondong Noh , Jeongho Yeo , Heecheol Yang , Hyoungju Ji
摘要： A method of a terminal in a wireless communication system is provided. The method includes receiving, from at least one of transmission and reception points (TRPs), downlink control information (DCI) including first information on transmission configuration indication (TCI) states and second information for antenna ports, identifying whether each of the TRPs repeatedly transmits same data via a physical downlink shared channel (PDSCH) based on a number of code division multiplex (CDM) group indicated by the second information for antenna ports, and receiving data from the TRPs based on a result of the identifying.
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公开(公告)号：US11129112B2
公开(公告)日：2021-09-21
申请号：US16678590
申请日：2019-11-08
发明人： Yongjun Kwak , Joonyoung Cho , Hyoungju Ji , Sangmin Ro
摘要： Methods and apparatuses are provided in which at least one parameter associated with a sidelink transmission is received from a base station. It is identified whether an uplink transmission is scheduled in a transmission time interval (TTI) in which a sidelink transmission to a second terminal is scheduled. The sidelink transmission is transmitted to the second terminal in the TTI in case that no uplink transmission is scheduled in the TTI. The sidelink transmission is transmitted based on a smaller transmission power value from two transmission power values.
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