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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：US11563526B2
公开(公告)日：2023-01-24
申请号：US17055348
申请日：2019-05-15
发明人： Jeongho Yeo , Younsun Kim , Sungjin Park , Jinyoung Oh , Taehan Bae , Juho Lee
摘要： Disclosed is a 5th generation (5G) or a pre-5G communication system for supporting a data transmission rate higher than that of a 4th generation (4G) communication system such as long term evolution (LTE). An apparatus and a method for performing retransmission in a wireless communication system are provided. A method for operating a transmitting device in a wireless communication system, according to various embodiments of the present disclosure, comprises the steps of: transmitting a plurality of data code blocks (CBs) to at least one receiving device in an initial transmission step; receiving, from the at least one receiving device, feedback information including information for indicating the number of data CBs, from among the plurality of data CBs, for which decoding has failed; and transmitting the number of parity CBs, determined on the basis of the number of data CBs for which the decoding has failed, to the at least one receiving device in a retransmission step. Therefore, the resources required for retransmission can be reduced.
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公开(公告)号：US11528109B2
公开(公告)日：2022-12-13
申请号：US17045369
申请日：2018-04-12
发明人： Hyojin Lee , Byungju Lee , Juho Lee , Younsun Kim , Junghyun Kim , Sangyeob Jung
摘要： Disclosed are: a communication technique for merging, with IoT technology, a 5G communication system for supporting a data transmission rate higher than that of a 4G system; and a system therefor. The present disclosure can be applied to intelligent services (for example, smart home, smart building, smart city, smart car or connected car, healthcare, digital education, retail, security, and safety-related services, and the like) on the basis of 5G communication technology and IoT-related technology. Disclosed are a method and an apparatus for transmitting a signal by using a non-orthogonal frequency division multiplexing (NOFDM) scheme and, particularly, the present invention presents a method and an apparatus for transmitting a control signal and a reference signal by using an OFDM scheme and for transmitting data by using the NOFDM scheme.
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4.发明授权公开(公告)号：US11523383B2
公开(公告)日：2022-12-06
申请号：US17081305
申请日：2020-10-27
发明人： Cheolkyu Shin , Jeongho Yeo , Jinyoung Oh , Youngwoo Kwak , Donghan Kim , Younsun Kim , Hoondong Noh , Taehyoung Kim
摘要： A method and apparatus are provided for setting a plurality of demodulation reference signal (DMRS) structures and determining uplink and downlink transmission timing for reducing a delay. A method performed by a terminal includes receiving, from a base station, information associated with a first symbol position for a demodulation reference signal (DMRS) in a transmission time interval; identifying the first symbol position for the DMRS, the first symbol position for the DMRS being identified relative to a start of the transmission time interval based on the information; and receiving, from the base station, the DMRS on the identified first symbol position of the DMRS.
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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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公开(公告)号：US11412528B2
公开(公告)日：2022-08-09
申请号：US16347546
申请日：2017-11-02
发明人： Seunghoon Choi , Yongjun Kwak , Younsun Kim , Taehyoung Kim
摘要： The present 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 present 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 present invention suggests a method for transmitting and receiving signals satisfying a maximum delay time, and a method and a device for effectively processing signals that are influenced by the transmission and reception of the signals satisfying the maximum delay time.
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7.发明授权公开(公告)号：US11330536B2
公开(公告)日：2022-05-10
申请号：US16921263
申请日：2020-07-06
发明人： Jeongho Yeo , Yangsoo Kwon , Younsun Kim , Hyunseok Ryu , Jinyoung Oh
摘要： The disclosure relates to a 5th generation (5G) or pre-5G communication system for supporting a higher data rate beyond a 4th generation (4G) communication system, such as Long Term Evolution (LTE). An operation method and a terminal are provided. The method includes acquiring information and determining an initial value for an automatic gain control (AGC) operation for a signal received from a transmission device, receiving a signal from the transmission device, and performing the AGC operation for the received signal by using the initial value determined based on the information.
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8.发明授权公开(公告)号：US11317358B2
公开(公告)日：2022-04-26
申请号：US16603673
申请日：2018-04-24
发明人： Seunghoon Choi , Youngbum Kim , Younsun Kim , Taehyoung Kim , Jeongho Yeo
摘要： Disclosed are: a communication technique for merging, with IoT technology, a 5G communication system for supporting a data transmission rate higher than that of a 4G system; and system therefor. The present disclosure can be applied to intelligent services (for examples, smart home, smart building, smart city, smart car or connected car, healthcare, digital education, retail, security, and safety-related services, and the like) on the basis of 5G communication technology and IoT-related technology. A power control method for uplink transmission in a wireless cellular communication system is disclosed.
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公开(公告)号：US20210218517A1
公开(公告)日：2021-07-15
申请号：US17217980
申请日：2021-03-30
发明人： Youngwoo Kwak , Younsun Kim , Jinyoung Oh , Hyojin Lee , Hyoungju Ji , Seunghoon Choi
IPC分类号： H04L5/00 , H04B7/06 , H04B7/0456 , H04W72/04
摘要： A method for transmitting and receiving channel state information at a terminal of a mobile communication system according to an embodiment of the preset specification comprises the steps of: determining at least one of first precoding information and first rank information corresponding to a first dimension; receiving, from a base station, a reference signal corresponding to a second dimension; determining at least one of second precoding information and second rank information corresponding to the second dimension, on the basis of the reference signal; and transmitting, to the base station, channel state information which has been determined on the basis of at least one of the first precoding information, the first rank information, the second precoding information and the second rank information. According to an embodiment of the present specification, it is possible to correctly transmit and receive pre-coding information and channel state information at a terminal and a base station including a plurality of antennas, and to reduce an overhead occurring at the time of transmission and reception.
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公开(公告)号：US11063698B2
公开(公告)日：2021-07-13
申请号：US16346696
申请日：2017-10-30
发明人： Jeongho Yeo , Younsun Kim , Sungjin Park , Jinyoung Oh
摘要： The present invention relates to a communication technique, which is a convergence of IoT technology and 5G communication system for supporting higher data transmission rate beyond 4G system, and a system for same. The present invention can be applied to smart services (e.g. smart homes, smart buildings, smart cities, smart cars or connected cars, health care, digital education, retail businesses, security- and safety-related services and the like) on the basis of 5G communication technology and IoT-related technology. The present invention provides a method, for transmitting data by a terminal, comprising the steps of: receiving, from a base station, information relating to sub-transmission blocks comprised in a transmission block; determining sub-transmission blocks on the basis of the number of code blocks comprised in the scheduled transmission block and the information relating to the sub-transmission blocks; and transmitting data to the base station by means of the sub-transmission blocks, wherein the sub-transmission block is a code block group comprising at least one code block.
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