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81.发明申请公开(公告)号：US20210028814A1
公开(公告)日：2021-01-28
申请号：US16936068
申请日：2020-07-22
发明人： Kwonjong LEE , Sang-Hyo Kim , Hyojin Lee , Min Young Chung , Dong Hyun Kong , Seungil Park , Hyosang Ju
摘要： A method of a first communication device for removing a self-interference signal in a wireless communication system is provided. The method includes receiving a signal having a size less than a first threshold value from a second communication device in a first interval within a first frame, transmitting a first signal to a third communication device in the first interval, and estimating a self-interference channel through which the self-interference signal is transmitted based on the signal received in the first interval and the first signal transmitted in the first interval. The self-interference signal is a signal transmitted by the first communication device and is received by the first communication device through the self-interference channel.
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82.发明授权公开(公告)号：US10772073B2
公开(公告)日：2020-09-08
申请号：US15327360
申请日：2015-07-17
发明人： Donghan Kim , Hyoungju Ji , Yongjun Kwak , Jinyoung Oh , Hyojin Lee , Sangmin Ro , Hoondong Noh , Seunghoon Choi , Youngbum Kim , Younsun Kim , Juho Lee , Youngwoo Kwak
摘要： The present invention relates to a communication technology and system converging the 5G communication system for supporting a data rate higher than that of the 4G system with IoT technology. The present invention is applicable to intelligent services based on 5G communication and IoT technologies (e.g., smart home, smart building, smart city, smart car or connected car, health care, digital education, retail, security, and safety services. In detail, the discovery signal transmission method of a terminal in a wireless communication system supporting Device to Device (D2D) communication includes receiving discovery resource pool information from a base station, selecting a resource for transmitting discovery signal based on the discovery resource pool information, determining whether the selected resource is overlapped with a resource configured for transmitting a D2D synchronization signal, and determining whether to transmit the discovery signal based on the determination result.
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83.发明授权公开(公告)号：US10735968B2
公开(公告)日：2020-08-04
申请号：US15532491
申请日：2015-11-10
发明人： Jaehyuk Jang , Kyeongin Jeong , Soenghun Kim , Sangbum Kim , Hyojin Lee
IPC分类号： H04W16/14 , H04W74/08 , H04W24/10 , H04W72/04 , H04W88/02 , H04W88/08 , H04B7/0413 , H04W72/08
摘要： The present disclosure relates to a communication technique and system for combining IoT technologies with 5G communication systems to support a higher data rate after 4G communication systems. The present disclosure can be applied to intelligent services based on 5G communication technologies and IoT-related technologies such as smart home, smart building, smart city, smart car or connected car, healthcare, digital education, retail business, and security and safety. Provided are is a method and apparatus for supporting the licensed-assisted access (LAA) technology in a wireless communication system. The method for a user equipment (UE) may include: sending a first report message containing information on whether the LAA technology is supported to a base station (ENB) supporting a first communication technology; detecting usage of a second communication technology in a first band of the unlicensed spectrum; and sending, upon detecting usage of the second communication technology in the first band, a second report message containing information on usage of the second communication technology to the ENB.
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公开(公告)号：US10531440B2
公开(公告)日：2020-01-07
申请号：US15989994
申请日：2018-05-25
发明人： Hyojin Lee , Younsun Kim , Youngbum Kim , Joonyoung Cho , Hyoungju Ji
摘要： Disclosed are an apparatus for transmitting and receiving a downlink data in a wireless communications system supporting cooperation between transmission points and a method therefor. A method for transmitting a downlink data in a wireless communications system includes the steps of: transmitting the information on resources management collection including the CSI-RS information for measuring the terminal received power to a terminal; receiving a report of the received power measurement of the CSI-RS corresponding to the resources management collection from the terminal; determining the measurement collection including the CSI-RS information for the terminal to infer a channel based on the received power measurement report; and transmitting the resources mapped with data to the terminal based on the measurement collection.
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85.发明申请公开(公告)号：US20180351612A1
公开(公告)日：2018-12-06
申请号：US16102254
申请日：2018-08-13
发明人： Younsun KIM , Hyojin Lee , Hyoungju Ji , Juho Lee , Joonyoung Cho
IPC分类号： H04B7/0417 , H04B7/06 , H04L5/00 , H04B7/0456
CPC分类号： H04B7/0417 , H04B7/0469 , H04B7/0626 , H04B7/063 , H04B7/0632 , H04B7/0639 , H04B7/065 , H04L5/0048 , H04L5/0053 , H04L5/0057
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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86.发明授权公开(公告)号：US10149235B2
公开(公告)日：2018-12-04
申请号：US15818078
申请日：2017-11-20
发明人： Youngbum Kim , Joonyoung Cho , Yongjun Kwak , Juho Lee , Hyojin Lee , Hyoungju Ji , Younsun Kim , Sangmin Ro , Seunghoon Choi
摘要： A discovery signal transmission/reception method and an apparatus for improving energy efficiency of the system are provided. The discovery signal transmission method of a base station in a mobile communication system according to the present disclosure includes acquiring a discovery signal configuration of a neighbor cell, transmitting the discovery signal configuration to a terminal, receiving a measurement report including a result of measurement on a discovery signal of the neighbor from the terminal, the measurement being performed based on the discovery signal configuration, and determining whether to make a handover decision for the terminal based on the measurement report. The discovery signal transmission/reception method of the present disclosure is advantageous in improving energy efficiency of a mobile communication system.
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公开(公告)号：US09913267B2
公开(公告)日：2018-03-06
申请号：US14859930
申请日：2015-09-21
发明人： Younsun Kim , Cheng Shan , Kiil Kim , Hyojin Lee
CPC分类号： H04W72/042 , H04L5/0007 , H04L5/0023 , H04L5/0048 , H04L5/0051 , H04L5/0053 , H04L5/0091 , H04W72/0446
摘要： In legacy systems such as 3rd Generation Partnership Project (3GPP) releases 8 to 10, the control channel is transmitted using the first few Orthogonal Frequency Division Multiplexing (OFDM) symbols in a subframe. The limited control channel capacity will impact the system performance in future releases as more and more User Equipments (UEs) will be scheduled in a subframe with technologies such as MulitUser-Multiple Input Multiple Output (MU-MIMO) and Coordinated Multipoint (CoMP) transmission being enhanced or introduced. A new Enhanced Control CHannel (E-CCH) is necessary to be designed, which will use the resource in the Physical Downlink Shared CHannel (PDSCH) in the legacy systems. The E-CCH will support UE-specific DeModulation Reference Signal (DMRS) based transmission and receiving. However, the configuration of DMRS for E-CCH is necessary to be known to UE in prior. This invention discloses multiple methods in which DMRS is configured for E-CCHs and respective eNB and UE behaviors.
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公开(公告)号：US09912430B2
公开(公告)日：2018-03-06
申请号：US13935711
申请日：2013-07-05
发明人： Krishna Sayana , Younsun Kim , Hyojin Lee , Young-Han Nam , Jin-Kyu Han
CPC分类号： H04J3/1694 , H04B7/0456 , H04B7/0617 , H04B7/0619 , H04B7/0626 , H04L1/0026 , H04L5/001 , H04L5/0023 , H04L5/0035 , H04L5/0057 , H04L5/1469
摘要： A method for transmitting a CSI feedback report to a serving cell comprises for time division duplex, configuring at least one periodic CSI process with a CSI reference source defined by a single downlink subframe n−nCQI_ref, wherein nCQI_ref is a smallest value greater than or equal to a positive integer nCQI_ref_min, such that it corresponds to a valid downlink subframe, wherein nCQI_ref_min varies based on a number of at least one periodic CSI process. A method for CSI feedback reporting to a base station comprises configuring not to accommodate, by a user equipment, the one or more aperiodic CSI requests arrived from a serving cell except a CSI request of CSI processes with lower indexes for each serving cell, wherein a number of the one or more CSI processes with a lower index (es) is determined based on a number of pending CSI reports.
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公开(公告)号：US09735936B2
公开(公告)日：2017-08-15
申请号：US15137779
申请日：2016-04-25
发明人： Younsun Kim , Juho Lee , Hyojin Lee , Joonyoung Cho , Hyoungju Ji
IPC分类号： H04L5/00 , H04W24/10 , H04B7/0413 , H04B7/0456 , H04B7/0452 , H04B7/06
CPC分类号： H04L5/0048 , H04B7/0413 , H04B7/0452 , H04B7/0456 , H04B7/0478 , H04B7/0619 , H04B7/0626 , H04B7/063 , H04B7/0632 , H04L5/0023 , H04L5/0057 , H04W24/10
摘要： A method and an apparatus for transmitting/receiving channel state information for use in multi-antenna system are provided. A signal communication method of a base station having a plurality of antennas in a wireless communication system includes determining antenna ports of first and second directions based on directions of the plurality of antennas, allocating channel measurement resources for the respective antenna ports to a terminal, transmitting a feedback configuration to the terminal according to the channel measurement resources, and receiving feedback information from the terminal based on the channel measurement resource and the feedback configuration. The signal transmission/reception method and apparatus are advantageous in transmitting/receiving channel state information efficiently in the system using a plurality of antennas.
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公开(公告)号：US09681434B2
公开(公告)日：2017-06-13
申请号：US14859987
申请日：2015-09-21
发明人： Younsun Kim , Cheng Shan , Kiil Kim , Hyojin Lee
CPC分类号： H04W72/042 , H04L5/0007 , H04L5/0023 , H04L5/0048 , H04L5/0051 , H04L5/0053 , H04L5/0091 , H04W72/0446
摘要： In legacy systems such as 3rd Generation Partnership Project (3GPP) releases 8 to 10, the control channel is transmitted using the first few Orthogonal Frequency Division Multiplexing (OFDM) symbols in a subframe. The limited control channel capacity will impact the system performance in future releases as more and more User Equipments (UEs) will be scheduled in a subframe with technologies such as MulitUser-Multiple Input Multiple Output (MU-MIMO) and Coordinated Multipoint (CoMP) transmission being enhanced or introduced. A new Enhanced Control CHannel (E-CCH) is necessary to be designed, which will use the resource in the Physical Downlink Shared CHannel (PDSCH) in the legacy systems. The E-CCH will support UE-specific DeModulation Reference Signal (DMRS) based transmission and receiving. However, the configuration of DMRS for E-CCH is necessary to be known to UE in prior. This invention discloses multiple methods in which DMRS is configured for E-CCHs and respective eNB and UE behaviors.
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