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    METHODS AND SYSTEMS FOR D2D OPERATION IN UNLICENSED SPECTRUM
    1.
    发明申请
    METHODS AND SYSTEMS FOR D2D OPERATION IN UNLICENSED SPECTRUM 审中-公开

    公开(公告)号：US20180368090A1

    公开(公告)日：2018-12-20

    申请号：US16002750

    申请日：2018-06-07

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Sripada KADAMBAR ,  Ashok Kumar Reddy CHAVVA ,  Anusha GUNTURU ,  Chai-Man LIM ,  Seon-Ik SEONG

    IPC: H04W56/00 ,  H04W8/00 ,  H04W16/14 ,  H04W72/04 ,  H04W72/12

    Abstract: Embodiments herein provide methods and systems for achieving D2D communications through unlicensed spectrum. The D2D-U operations can be achieved through multiple approaches. In the first approach, the devices can communicate with each other without any involvement of network. In the second approach, the network provides partial assistance to the devices such as allocating time and frequency resources for D2D-U communication. In the third approach, the network completely controls D2D-U operations between the devices. The embodiments include allocating time and frequency resources for transmission of PSBCH, PSDCH, PSCCH, and PSSCH. The allocations of the time and frequency resources meet regulatory requirements of minimum bandwidth utilization for unlicensed band operation. The embodiments include distributing power in narrow frequency sub-bands of D2D-U spectrum, in order to maximize transmission range of D2D-U communications.

    METHODS AND SYSTEMS FOR PERFORMING CELL SEARCH IN A MILLIMETER WAVE (MMWAVE) BASED COMMUNICATION NETWORK
    4.
    发明申请
    METHODS AND SYSTEMS FOR PERFORMING CELL SEARCH IN A MILLIMETER WAVE (MMWAVE) BASED COMMUNICATION NETWORK 有权

    公开(公告)号：US20220173824A1

    公开(公告)日：2022-06-02

    申请号：US17572997

    申请日：2022-01-11

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Sripada KADAMBAR ,  Ankur GOYAL ,  Ashok Kumar Reddy CHAVVA

    IPC: H04J11/00 ,  H04B7/06 ,  H04L27/26

    Abstract: The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system that supports higher data rates beyond 4th-Generation (4G) communication systems. In particular, one or more embodiments relate to methods and systems for performing cell search in a millimeter wave (mmWave) based communication network. A method disclosed herein includes selecting a subset of receive (Rx) beams from a plurality of Rx beams and scheduling a scan order for the selected subset of Rx beams, upon receiving a plurality of signals from a Base Station. The method also includes performing a cell search using the selected subset of Rx beams individually in the determined scan order. The method further includes combining two or more of the selected Rx beams, upon failing the cell search using the selected subset of Rx beams individually. The method further includes performing the cell search using the combined Rx beams.

    ARTIFICIAL INTELLIGENCE (AI) BASED CHANNEL STATE INFORMATION (CSI) CODING
    9.
    发明申请
    ARTIFICIAL INTELLIGENCE (AI) BASED CHANNEL STATE INFORMATION (CSI) CODING 有权

    公开(公告)号：US20240405821A1

    公开(公告)日：2024-12-05

    申请号：US18325511

    申请日：2023-05-30

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Sripada KADAMBAR ,  Ashwini KUMAR ,  Ameha Tsegaye ABEBE ,  Ashok Kumar Reddy CHAVVA ,  Pedamalli SAIKRISHNA

    IPC: H04B7/06 ,  H04W24/02

    Abstract: Disclosed is a method performed by a user equipment (UE) for Artificial Intelligence (AI) based Channel State Information (CSI) encoding. The method comprises receiving, a signaling message including at least one encoding parameter from a Base Station (BS), wherein the encoding parameter comprises an AI model. The method comprises segmenting a precoder data based on the signaling message into a plurality of data segments. The method comprises selecting at least one AI model from a plurality of AI models based on the at least one encoding parameter received from the BS. The method comprises encoding each data segment of the plurality of data segments of the precoder data using the at least one selected AI model. The method comprises sending at least one encoded data segment of the precoder data to the BS for decoding.

    METHODS FOR FREQUENCY OFFSET TRACKING IN NR MMWAVE FOR EFFICIENT BEAM MANAGEMENT
    10.
    发明申请
    METHODS FOR FREQUENCY OFFSET TRACKING IN NR MMWAVE FOR EFFICIENT BEAM MANAGEMENT 有权

    公开(公告)号：US20220070026A1

    公开(公告)日：2022-03-03

    申请号：US17420217

    申请日：2020-02-12

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Ashok Kumar Reddy CHAVVA ,  Sripada KADAMBAR

    IPC: H04L25/02 ,  H04B7/0408 ,  H04L5/00 ,  H04W72/04 ,  H04W74/00 ,  H04W74/08

    Abstract: Methods and systems for tracking frequency offset in NR are provided. A user equipment (UE) can compute the frequency offset comprising of crystal frequency drift and Doppler shift. Drift in frequencies generated by crystal oscillators in the UE and a base station are detected and nullified. Doppler shift of a serving beam is estimated using either data collected by sensors in the UE or reference signals received from the base station. Values of Doppler shift for a plurality of beams are estimated using the Doppler shift of the serving beam and sensor data, wherein the serving beam and the plurality of beams correspond to a same transmitter beam or different transmitter beams, wherein the type of QCL of the beams is either A, B, or C.

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