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公开(公告)号：US12143878B2
公开(公告)日：2024-11-12
申请号：US17728340
申请日：2022-04-25
Applicant: Samsung Electronics Co., Ltd.
Inventor： Mirette Sadek , Hongbing Cheng , Jung Hyun Bae
IPC: H04W36/00 , G06N3/044 , H04B17/318 , H04W4/029 , H04W4/33
Abstract: Disclosed is a method for determining whether to trigger of a conditional handover, including estimating, using a line-of-sight (LoS) channel, a received signal power as a function of a blocker used to simulate a human body, determining multiple stages of potential blockage of the received signal power by the blocker, predicting, using long-short-term memory (LTSM), a channel state and the potential blockage, and determining whether to trigger the conditional handover based on the predicted channel state and potential blockage.
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公开(公告)号：US11762051B2
公开(公告)日：2023-09-19
申请号：US17199432
申请日：2021-03-11
Applicant: Samsung Electronics Co., Ltd.
Inventor： Jang Wook Moon , Hongbing Cheng , Jungwon Lee
CPC classification number: G01S3/60 , G01S3/043 , H01Q3/2605 , H01Q21/00 , H04B7/0452
Abstract: A system and a method are disclosed for estimating antenna misalignments in a line-of-sight wireless communication system and using the estimated antenna misalignments to form an optimal beam that may provide the best performance based on the channel conditions. A receiver determines a rotational estimate and a translational estimate of the receiver with respect to a transmitter, and sends feedback information to the transmitter that is used to determine an optimal beamforming matrix for LOS communications between the receiver and the transmitter. The feedback information includes estimated rotational angles and an estimated translational distance between the receiver and the transmitter, or includes an offset angle between a first plane of antennas of the receiver and a second plane of antennas of the transmitter, a normal vector of the first plane of antennas and the estimated translational distance. The antennas may be antenna arrays or single-element antennas.
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公开(公告)号：US11165473B2
公开(公告)日：2021-11-02
申请号：US16881694
申请日：2020-05-22
Applicant: Samsung Electronics Co., Ltd.
Inventor： Hongbing Cheng , Hyukjoon Kwon , Qi Zhan , Kee-Bong Song
IPC: H04L23/02 , H04B7/0426 , H04B7/06 , H04B7/0456
Abstract: A method and system analog beamforming for a single-connected antenna array is herein disclosed. A method includes estimating analog channels on a per-antenna basis, calculating explicitly an analog beamforming matrix based on the estimated analog channels, and performing analog beamforming based on the calculated analog beamforming matrix.
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公开(公告)号：US20210273345A1
公开(公告)日：2021-09-02
申请号：US16929035
申请日：2020-07-14
Applicant: Samsung Electronics Co., Ltd.
Inventor： Jang Wook Moon , Hongbing Cheng , Kee-Bong Song
Abstract: A first antenna array includes antenna panels including: first antenna panels arranged on a first circle having a first radius, each of the first antenna panels including antenna elements: and second antenna panels arranged on a second circle having a second radius, each of the second antenna panels including antenna elements, the second circle being concentric with the first circle at a center point, the second antenna panels being arranged at a first angle around the center point with respect to the first antenna panels, the first radius, the second radius, and the first angle being computed in accordance with wireless transmission conditions including: a line-of-sight distance to a second antenna array including third antenna panels arranged on two or more circles; and a carrier frequency of a line-of-sight wireless transmission between the first antenna array and the second antenna array.
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公开(公告)号：US20200252112A1
公开(公告)日：2020-08-06
申请号：US16854168
申请日：2020-04-21
Applicant: Samsung Electronics Co., Ltd.
Inventor： Qi Zhan , Hongbing Cheng , Kee-Bong Song
IPC: H04B7/0456 , H04B7/0426 , H04B7/06
Abstract: A method and system for selecting precoding matrix index are herein disclosed. The method includes determining a precoder and candidate beams, selecting base beams based on a correlation power between the determined precoder and determined candidate beams, and estimating amplitude coefficients and cophase coefficients by projecting a channel on the selected base beams.
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Patent Agency Ranking
公开(公告)号：US10257012B2
公开(公告)日：2019-04-09
申请号：US15446673
申请日：2017-03-01
Applicant: Samsung Electronics Co., Ltd.
Inventor： Xiaoqiang Ma , Hongbing Cheng , Linbo Li , Jungwon Lee
IPC: H04L27/26
Abstract: The apparatus includes a plurality of correlation processors configured to each receive a group of samples and generate correlations of each group of samples; a plurality of multipliers each configured to multiply the correlations of one of the plurality of correlation processors by a weight, wherein the weight of at least one of the plurality of multipliers is different from the weight of at least another one of the plurality of multipliers; a summation processor configured to sum the weight multiplied correlations of the plurality of multipliers for time n, where n is an integer; and a coarse timing and coarse frequency processor configured to generate a coarse timing and a coarse frequency based on the sum.
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公开(公告)号：US11799213B2
公开(公告)日：2023-10-24
申请号：US17710072
申请日：2022-03-31
Applicant: Samsung Electronics Co., Ltd.
Inventor： Jang Wook Moon , Hongbing Cheng , Kee-Bong Song
CPC classification number: H01Q21/20 , H01Q9/0407 , H01Q21/06
Abstract: A first antenna array includes antenna panels including: first antenna panels arranged on a first circle having a first radius, each of the first antenna panels including antenna elements; and second antenna panels arranged on a second circle having a second radius, each of the second antenna panels including antenna elements, the second circle being concentric with the first circle at a center point, the second antenna panels being arranged at a first angle around the center point with respect to the first antenna panels, the first radius, the second radius, and the first angle being computed in accordance with wireless transmission conditions including: a line-of-sight distance to a second antenna array including third antenna panels arranged on two or more circles; and a carrier frequency of a line-of-sight wireless transmission between the first antenna array and the second antenna array.
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公开(公告)号：US11283507B2
公开(公告)日：2022-03-22
申请号：US17020562
申请日：2020-09-14
Applicant: Samsung Electronics Co., Ltd.
Inventor： Hongbing Cheng , Federico Penna
Abstract: Methods and systems of obtaining a beamforming matrix, the method comprising inputting PMI feedback from a user equipment (UE), inputting partial channel estimation derived from sounding reference signal (SRS) switching, and composing a precoding matrix using the PMI feedback and partial channel estimation.
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公开(公告)号：US11108600B2
公开(公告)日：2021-08-31
申请号：US16884918
申请日：2020-05-27
Applicant: Samsung Electronics Co., Ltd.
Inventor： Federico Penna , Hongbing Cheng , Kee-Bong Song
Abstract: A receiver circuit for separating a plurality of layers multiplexed in an orthogonal frequency domain multiplexed (OFDM) signal includes: a descrambling sub-circuit configured to descramble a plurality of signals received on non-adjacent subcarriers of the OFDM signal to generate a plurality of descrambled signals; an inverse fast Fourier transform sub-circuit configured to transform the descrambled signals from a frequency domain to a received signal including a plurality of samples in a time domain; and a layer separation sub-circuit configured to separate the layers multiplexed in the received signal by: defining a first time domain sampling window and a second time domain sampling window in accordance with a size of the inverse fast Fourier transform; extracting one or more first layers from the samples in the first time domain sampling window; and extracting one or more second layers from the samples in the second time domain sampling window.
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公开(公告)号：US20210058273A1
公开(公告)日：2021-02-25
申请号：US16688866
申请日：2019-11-19
Applicant: Samsung Electronics Co., Ltd.
Inventor： Bofeng Yuan , Hongbing Cheng , Kee-Bong Song
IPC: H04L25/02 , H04B1/7113 , H04B17/336
Abstract: A method for minimizing a time domain mean square error (MSE) of channel estimation (CE) includes estimating, by a processor, a power delay profile (PDP) from a time domain observation of reference signal (RS) channels; estimating, by the processor, a noise variance of the RS channels; and determining, by the processor, a first arrival path (FAP) value and a delay spread estimation (DSE) value based on the estimated PDP and the estimated noise variance for minimizing the MSE of CE.
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