公开(公告)号：US20240236797A1

公开(公告)日：2024-07-11

申请号：US18474121

申请日：2023-09-25

Applicant: Samsung Electronics Co., Ltd.

Inventor： Youngwook SON ,  Hyeonjun KIM ,  Jungwoon LEE ,  Hyunbae JEON

IPC: H04W36/20 ,  H04W36/06 ,  H04W72/0453

CPC classification number: H04W36/20 ,  H04W36/06 ,  H04W72/0453

Abstract: A method of operating a wireless communication device includes detecting a first signal based on an auto correlation function value of each of a plurality of sub-bands, determining whether the first signal is an interference signal, the interference signal not being in a primary channel, aborting a first synchronization for the first signal in response to determining the first signal is the interference signal, adjusting a bandwidth to exclude a first sub-band among the plurality of sub-bands, the first sub-band corresponding to the interference signal to obtain an adjusted bandwidth, and performing a second synchronization according to the adjusted bandwidth.

公开(公告)号：US20240259970A1

公开(公告)日：2024-08-01

申请号：US18532219

申请日：2023-12-07

Applicant: Samsung Electronics Co., Ltd.

Inventor： Jinyong LEE ,  Jungwoon LEE

IPC: H04W56/00 ,  H04L5/00 ,  H04L27/20

CPC classification number: H04W56/0015 ,  H04L5/0051 ,  H04L27/2017 ,  H04W56/0035

Abstract: A method of performing synchronization and frequency offset estimation for an input signal includes receiving an input signal through a wireless channel, and performing a frequency compensation operation on the input signal based on a reference signal to generate a compensated input signal. The reference signal corresponds to an access code associated with the input signal. The method includes determining a synchronization timing and a frequency offset for the input signal by comparing the reference signal with the compensated input signal.

公开(公告)号：US20240244542A1

公开(公告)日：2024-07-18

申请号：US18403395

申请日：2024-01-03

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jinyong LEE ,  Jungwoon LEE

IPC: H04W56/00

CPC classification number: H04W56/001 ,  H04W56/003

Abstract: A method of detecting synchronization timing and sub-band, includes: receiving an input signal corresponding to a training sequence; generating a template signal based on the input signal and a single reference signal; performing a matched filtering operation on the input signal based on the template signal; obtaining an adaptive threshold for detecting a target sub-band based on a result of the matched filtering operation; obtaining a peak tone for the target sub-band based on the result of the matched filtering operation; and determining whether the input signal corresponds to the target sub-band and a synchronization timing for the input signal based on the adaptive threshold and the peak tone.

公开(公告)号：US20240244601A1

公开(公告)日：2024-07-18

申请号：US18411641

申请日：2024-01-12

Applicant: Samsung Electronics Co., Ltd.

Inventor： Jinmin KIM ,  Jungwoon LEE ,  Sunghwan HYUN

IPC: H04W72/0453 ,  H04W72/542

CPC classification number: H04W72/0453 ,  H04W72/542

Abstract: A method of wireless communication includes dividing a signal received through an antenna into a plurality of sub-band signals, selecting candidate sub-band signals from among the plurality of sub-band signals, the candidate sub-band signals having a correlation value exceeding a first threshold value, and acquiring preamble information of a physical layer protocol data unit (PPDU) based on a subset of the candidate sub-band signals having a signal-to-noise ratio (SNR) value higher than an SNR threshold value, the SNR threshold value being obtained by subtracting a difference value from a maximum SNR value.

公开(公告)号：US20180255556A1

公开(公告)日：2018-09-06

申请号：US15601366

申请日：2017-05-22

Applicant: Samsung Electronics Co., Ltd.

Inventor： Abhik K. DAS ,  Dongwoon BAI ,  Jungwoon LEE

IPC: H04W72/08 ,  H04W72/12 ,  G06F17/14 ,  H04W8/08 ,  H04B7/26 ,  G01S5/02 ,  H04Q3/00

CPC classification number: H04W72/082 ,  G01S5/0221 ,  G01S5/0263 ,  G01S5/0273 ,  G06F17/141 ,  H04B7/26 ,  H04J2011/0096 ,  H04Q3/0062 ,  H04W8/085 ,  H04W72/12

Abstract: A method and apparatus are provided. The method includes receiving reference signal resource elements from a transceiver, determining a channel impulse response (CIR) signal based on the received reference signal resource elements, estimating a coarse value of a FAP of the reference signal resource elements based on the CIR signal, estimating a fine value of the FAP of the reference signal resource elements based on CIR samples around the FAP location, and combining the coarse value estimate and the fine value estimate to determine the FAP estimate.