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    APPARATUS AND METHOD FOR N1-N2 BITMAP GENERATION FOR CELLULAR COMMUNICATION SYSTEM
    2.
    发明申请
    APPARATUS AND METHOD FOR N1-N2 BITMAP GENERATION FOR CELLULAR COMMUNICATION SYSTEM 有权

    公开(公告)号：US20230034556A1

    公开(公告)日：2023-02-02

    申请号：US17693205

    申请日：2022-03-11

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Hao Chen ,  Shiyang Leng ,  Ahmed Atef Ibrahim Ibrahim ,  Namjeong Lee ,  Sooyoung Hur

    IPC: H04W52/42 ,  H04B7/06

    Abstract: Methods and apparatuses in a wireless communication system. A base station (BS) includes a transceiver and a processor. The processor regulates a transmit power in a direction of an earth station or a predefined receiver by: calculating a power flux density for the BS to the earth station or the predefined receiver; calculating an equivalent antenna gain for other base stations; calculating a directional power back-off level for the other base stations with respect to the earth station or the predefined receiver; generating a restricted precoding matrix indicator based on the calculated directional power back-off level; generating an N1-N2 bitmap for the BS; and applying the N1-N2 bitmap for signal transmission to at least one UE. The N1-N2 bitmap is generated based on: physical parameters of the earth station of the predefined receiver; physical parameters of the BS; an operator input metric; or restricted precoding matrix indicator.

    PMI-based data beam nulling with a CSI report
    3.
    发明授权
    PMI-based data beam nulling with a CSI report 有权

    公开(公告)号：US11777568B2

    公开(公告)日：2023-10-03

    申请号：US17806068

    申请日：2022-06-08

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Shiyang Leng ,  Hao Chen ,  Ahmed Atef Ibrahim Ibrahim ,  Namjeong Lee ,  Sooyoung Hur

    IPC: H04B7/0456 ,  H04L1/00

    CPC classification number: H04B7/0486 ,  H04L1/0009

    Abstract: Apparatuses and methods for precoding matrix indicator (PMI)-based data beam nulling with a channel state information (CSI) report. An apparatus includes a transceiver configured to communicate via a wired or wireless communication medium and a processor coupled to the transceiver. The processor is configured to identify restricted PMI beams in a nulling direction for supported ranks; receive, via the transceiver from a user equipment (UE), a CSI report including a rank, a PMI, and channel quality indicator (CQI) feedback; and determine whether the reported PMI is restricted. The processor is further configured to select an alternative PMI among a number of unrestricted PMIs for the reported rank; boost a reported CQI if a reduced transmit power is configured; and select a modulation coding scheme (MCS) and generate a precoder for a data beam based on at least one of: the CSI report, the alternative PMI, and the boosted CQI.

    SYSTEM AND METHOD FOR BEAM DIRECTIONAL NULLING FOR SRS-BASED DATA BEAMS
    4.
    发明申请
    SYSTEM AND METHOD FOR BEAM DIRECTIONAL NULLING FOR SRS-BASED DATA BEAMS 有权

    公开(公告)号：US20230052415A1

    公开(公告)日：2023-02-16

    申请号：US17658011

    申请日：2022-04-05

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Shiyang Leng ,  Hao Chen ,  Namjeong Lee ,  Sooyoung Hur

    IPC: H04B7/06 ,  H04L5/00

    Abstract: An apparatus in a wireless communication system is configured to perform a method for directional beam nulling of SRS-based data beams. A base station (BS) includes a transceiver and a processor. The processor is configured to transmit a data beam to at least one user equipment (UE). The processor is also configured to configure the data beam to have a null area in a direction of a satellite earth station (ES), the null area defining a space within a coverage area of the data beam in which a signal from the data beam is suppressed. The data beam is configured by: generating one or more steering vectors to the ES; obtaining a UE channel matrix via a sounding reference signal (SRS) and determining a rank value; and generating a beamforming precoder configured to directional null the data beam in the direction of the ES.

    Method and apparatus for correcting multi-input multi-output beamforming pattern in wireless communication system
    5.
    发明授权
    Method and apparatus for correcting multi-input multi-output beamforming pattern in wireless communication system 有权

    公开(公告)号：US12132537B2

    公开(公告)日：2024-10-29

    申请号：US17756551

    申请日：2020-11-18

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Changyeong Oh ,  Jeehye Cha ,  Sooyoung Hur ,  Yongseok Park ,  Jinho Lee

    IPC: H04L1/02 ,  H04B7/0456 ,  H04W16/28 ,  H04W24/02

    CPC classification number: H04B7/0456 ,  H04W16/28 ,  H04W24/02

    Abstract: According to a method of an embodiment of the present disclosure, a method for correcting a beamforming pattern of a base station by an analysis server of a base station management network may comprise the steps of: when network management information is received from a first base station, identifying whether or not the network management information indicates the occurrence of a failure in an antenna element of the first base station; when the network management information indicates the occurrence of the failure in the antenna element of the first base station, analyzing an effect of a beamforming pattern of the first base station and analyzing a change in a cell coverage; on the basis of the result of the analysis, determining a first beamforming pattern for compensating for the failure in the antenna element; and transmitting, to the first base station, information about the first beamforming pattern by including the information in management control information.

    PMI-BASED DATA BEAM NULLING WITH A CSI REPORT
    6.
    发明申请
    PMI-BASED DATA BEAM NULLING WITH A CSI REPORT 有权

    公开(公告)号：US20230033259A1

    公开(公告)日：2023-02-02

    申请号：US17806068

    申请日：2022-06-08

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Shiyang Leng ,  Hao Chen ,  Ahmed Atef Ibrahim Ibrahim ,  Namjeong Lee ,  Sooyoung Hur

    IPC: H04B7/0456 ,  H04L1/00

    Abstract: Apparatuses and methods for precoding matrix indicator (PMI)-based data beam nulling with a channel state information (CSI) report. An apparatus includes a transceiver configured to communicate via a wired or wireless communication medium and a processor coupled to the transceiver. The processor is configured to identify restricted PMI beams in a nulling direction for supported ranks; receive, via the transceiver from a user equipment (UE), a CSI report including a rank, a PMI, and channel quality indicator (CQI) feedback; and determine whether the reported PMI is restricted. The processor is further configured to select an alternative PMI among a number of unrestricted PMIs for the reported rank; boost a reported CQI if a reduced transmit power is configured; and select a modulation coding scheme (MCS) and generate a precoder for a data beam based on at least one of: the CSI report, the alternative PMI, and the boosted CQI.

    Apparatus and method for N1-N2 bitmap generation for cellular communication system
    7.
    发明授权
    Apparatus and method for N1-N2 bitmap generation for cellular communication system 有权

    公开(公告)号：US12089170B2

    公开(公告)日：2024-09-10

    申请号：US17693205

    申请日：2022-03-11

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Hao Chen ,  Shiyang Leng ,  Ahmed Atef Ibrahim Ibrahim ,  Namjeong Lee ,  Sooyoung Hur

    IPC: H04B7/04 ,  H04B7/06 ,  H04W52/18 ,  H04W52/42

    CPC classification number: H04W52/42 ,  H04B7/0634

    Abstract: Methods and apparatuses in a wireless communication system. A base station (BS) includes a transceiver and a processor. The processor regulates a transmit power in a direction of an earth station or a predefined receiver by: calculating a power flux density for the BS to the earth station or the predefined receiver; calculating an equivalent antenna gain for other base stations; calculating a directional power back-off level for the other base stations with respect to the earth station or the predefined receiver; generating a restricted precoding matrix indicator based on the calculated directional power back-off level; generating an N1-N2 bitmap for the BS; and applying the N1-N2 bitmap for signal transmission to at least one UE. The N1-N2 bitmap is generated based on: physical parameters of the earth station of the predefined receiver; physical parameters of the BS; an operator input metric; or restricted precoding matrix indicator.

    System and method for beam directional nulling for SRS-based data beams
    8.
    发明授权
    System and method for beam directional nulling for SRS-based data beams 有权

    公开(公告)号：US11901987B2

    公开(公告)日：2024-02-13

    申请号：US17658011

    申请日：2022-04-05

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Shiyang Leng ,  Hao Chen ,  Namjeong Lee ,  Sooyoung Hur

    IPC: H04B7/06 ,  H04L5/00

    CPC classification number: H04B7/0617 ,  H04B7/0634 ,  H04L5/0048

    Abstract: An apparatus in a wireless communication system is configured to perform a method for directional beam nulling of SRS-based data beams. A base station (BS) includes a transceiver and a processor. The processor is configured to transmit a data beam to at least one user equipment (UE). The processor is also configured to configure the data beam to have a null area in a direction of a satellite earth station (ES), the null area defining a space within a coverage area of the data beam in which a signal from the data beam is suppressed. The data beam is configured by: generating one or more steering vectors to the ES; obtaining a UE channel matrix via a sounding reference signal (SRS) and determining a rank value; and generating a beamforming precoder configured to directional null the data beam in the direction of the ES.

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