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    METHOD AND APPARATUS FOR TIME AND FREQUENCY TRACKING IN CELLULAR COMMUNICATION SYSTEM
    192.
    发明申请
    METHOD AND APPARATUS FOR TIME AND FREQUENCY TRACKING IN CELLULAR COMMUNICATION SYSTEM 有权

    公开(公告)号：US20210352603A1

    公开(公告)日：2021-11-11

    申请号：US17385235

    申请日：2021-07-26

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Hoondong NOH ,  Youngwoo Kwak ,  Donghan Kim ,  Taehyoung Kim ,  Cheolkyu Shin ,  Seunghoon Choi ,  Younsun Kim

    IPC: H04W56/00 ,  H04L1/00 ,  H04L5/00

    Abstract: 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 provides a method and an apparatus which can achieve accurate time and frequency synchronization while reducing system load, in line with the design requirements for a 5G communication system. Particularly, the present invention provides a method for acquiring time and frequency synchronization by a terminal in a communication system, the method comprising the steps of: receiving a first synchronization signal from a base station; receiving a second synchronization signal from the base station; and receiving a channel state information-reference signal (CSI-RS) from the base station, and acquiring downlink time and frequency synchronization with the base station on the basis of the CSI-RS.

    Method and apparatus for configuring reference signal in wireless communication system
    193.
    发明授权
    Method and apparatus for configuring reference signal in wireless communication system 有权

    公开(公告)号：US11133914B2

    公开(公告)日：2021-09-28

    申请号：US16791365

    申请日：2020-02-14

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Jinkyu Kang ,  Younsun Kim ,  Youngbum Kim ,  Taehyoung Kim ,  Cheolkyu Shin ,  Seunghoon Choi

    IPC: H04L5/10 ,  H04L5/00 ,  H04B1/713 ,  H04W80/02 ,  H04W72/04

    Abstract: 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. A method performed by a terminal in a communication system is provided. The method includes receiving, from a base station, demodulation reference signal (DMRS) configuration information using higher layer signaling; receiving, from the base station, downlink control information for transmitting uplink data, the downlink control information including information on DMRS and resource allocation information for the uplink data; identifying a number of at least one DMRS symbol and respective position of the at least one DMRS symbol based on the information on DMRS and resource allocation information; and transmitting, to the base station, the uplink data and the DMRS based on the identified respective position of the at least one DMRS symbol.

    Method and device for operating plurality of frame structures in mobile communication system
    194.
    发明授权
    Method and device for operating plurality of frame structures in mobile communication system 有权

    公开(公告)号：US11102797B2

    公开(公告)日：2021-08-24

    申请号：US16074653

    申请日：2017-02-03

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Jinyoung Oh ,  Younsun Kim

    IPC: H04W72/12 ,  H04L5/00 ,  H04W72/04 ,  H04B7/26 ,  H04L5/14

    Abstract: The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). A scheduling method by a base station in a wireless communication system, the method comprising receiving a message including capability information from a first terminal and a second terminal, setting a first secondary cell having a first frame structure to the first terminal, and setting a second secondary cell having a second frame structure to the second terminal, based on the capability information and performing scheduling for the first secondary cell and second secondary cell, wherein in the second frame structure, all subframes are at least one of a downlink subframe, an uplink subframe, and an empty subframe.

    Method and apparatus for transmitting and receiving feedback for cooperative communication system
    195.
    发明授权
    Method and apparatus for transmitting and receiving feedback for cooperative communication system 有权

    公开(公告)号：US11064506B2

    公开(公告)日：2021-07-13

    申请号：US16738431

    申请日：2020-01-09

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Hyojin Lee ,  Juho Lee ,  Kiil Kim ,  Younsun Kim

    IPC: H04W72/08 ,  H04L5/00 ,  H04L25/02 ,  H04B7/024 ,  H04B7/06 ,  H04W24/10 ,  H04W72/04

    Abstract: A method and an apparatus for transmitting and receiving a feedback signal in a cellular mobile communication system is provided. The method of transmitting feedback in a Cooperative Multi-Point (CoMP) system, includes receiving feedback set information including allocation information of a Channel Status Information Reference Signal (CSI-RS) transmitted for estimating a channel of a User Equipment (UE), receiving IDentification (ID) information for identifying a CoMP set including CSI-RS allocation information from a cell operating in a CoMP mode, extracting the CoMP set using the ID information and a feedback set, detecting a first feedback mode and first feedback timing with a first CSI-RS not included in the CoMP set among CSI-RSs included in the feedback set, and generating and transmitting feedback with respect to the first CSI-RS according to the detected first feedback mode and the first feedback timing.

    Communication method and apparatus in full-dimensional multiple-input multiple-output mobile communication system
    198.
    发明授权
    Communication method and apparatus in full-dimensional multiple-input multiple-output mobile communication system 有权

    公开(公告)号：US10965410B2

    公开(公告)日：2021-03-30

    申请号：US15106256

    申请日：2014-12-16

    Applicant: Samsung Electronics Co., Ltd

    Inventor： Youngwoo Kwak ,  Younsun Kim ,  Jinyoung Oh ,  Hyojin Lee ,  Hyoungju Ji ,  Seunghoon Choi

    IPC: H04L5/00 ,  H04W72/04 ,  H04B7/04 ,  H04B7/06 ,  H04B7/0456

    Abstract: 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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