公开(公告)号：US12284058B2

公开(公告)日：2025-04-22

申请号：US18310422

申请日：2023-05-01

Applicant: Samsung Electronics Co., Ltd.

Inventor： Junmo Sung ,  Tiexing Wang ,  Yeqing Hu ,  Yang Li ,  Jianzhong Zhang

IPC: H04L25/02

Abstract: A method and device for self-tuning scales of variables for processing in fixed-point hardware. The device includes a sequence of fixed-point arithmetic circuits configured to receive at least one input signal and output at least one output signal. The circuits are preconfigured with control scales associated with each of the input and output signals. A first circuit in the sequence is configured to receive a first input signal having a dynamic true scale that is different from the control scale associated with the first input signal. Each of the circuits is further configured to determine, for each of the output signals, an adaptive scale from the control scale associated with the output signal based on the true scale of the first input signal and the control scale associated with the first input signal, and generate, from the input signal, the output signal having the associated adaptive scale.

公开(公告)号：US11552837B2

公开(公告)日：2023-01-10

申请号：US17143957

申请日：2021-01-07

Applicant: Samsung Electronics Co., Ltd.

Inventor： Junmo Sung ,  Yang Li ,  Rui Wang ,  Yeqing Hu ,  Jin Yuan ,  Jianzhong Zhang

IPC: H04L27/26 ,  H04L25/02 ,  H04L5/00 ,  H04W72/04

Abstract: Methods and apparatuses in a wireless communication system. A method of operating a base station (BS) includes receiving a set of uplink signals; estimating, based on a subset of the set of uplink signals, uplink channels; estimating a timing offset (TO) and a frequency offset (FO) for a subset of the estimated uplink channels; compensating, based on the estimated TO and FO, the subset of the estimated uplink channels to generate TO and FO compensated uplink channel estimates; and generating channel prediction information based on the compensated subset of the estimated uplink channels.

公开(公告)号：US20240073063A1

公开(公告)日：2024-02-29

申请号：US18446386

申请日：2023-08-08

Applicant: Samsung Electronics Co., Ltd.

Inventor： Yeqing Hu ,  Yang Li ,  Jianzhong Zhang

IPC: H04L25/02

CPC classification number: H04L25/0242 ,  H04L25/021

Abstract: Methods and apparatuses for canonical model (CM) based channel status information enhancement. A base station includes a transceiver configured to receive a reference signal from a user equipment (UE) and a processor operably coupled to the transceiver. The processor is configured to perform a linear transformation based on the received reference signal, select a basis set based on the linear transformation, select a set of kernels based on the selected basis set and the linear transformation, and reconstruct a channel based on the selected set of kernels.

公开(公告)号：US20230388158A1

公开(公告)日：2023-11-30

申请号：US18183114

申请日：2023-03-13

Applicant: Samsung Electronics Co., Ltd.

Inventor： Yeqing Hu ,  Yang Li ,  Tiexing Wang ,  Junmo Sung ,  Jianzhong Zhang

IPC: H04L25/02

CPC classification number: H04L25/0254 ,  H04L25/0256 ,  H04L25/0204

Abstract: A method includes determining estimated features comprising second order statistics based on at least one received signal. The method also includes classifying, using a machine learning network, each channel of the at least one received signal into a channel profile based on the estimated features. The method also includes obtaining multiple minimum mean square error (MMSE) channel estimation weights from a database based on the estimated features, the database storing (i) representative MMSE estimation weights and (ii) channel cluster representatives indexed by the estimated features. The method also includes applying a respective MMSE channel estimation weight for each channel.

公开(公告)号：US11581959B2

公开(公告)日：2023-02-14

申请号：US17188934

申请日：2021-03-01

Applicant: Samsung Electronics Co., Ltd.

Inventor： Yang Li ,  Junmo Sung ,  Rui Wang ,  Yeqing Hu

IPC: H04W48/16 ,  H04B17/18 ,  H04B17/10 ,  H04B17/12 ,  H04W80/02 ,  H04B17/26 ,  H04W72/04 ,  H04W56/00 ,  H04L25/02

Abstract: A base station (UE) is configured to perform a computer-implemented method for antenna fault detection and correction. The computer-implemented method includes acquiring one or more sounding reference signals (SRSs) received from at least one gNB antenna; detecting an antenna failure based on the one or more SRSs; estimating a noise power based on the antenna failure and a history of received SRSs; detecting a missing SRS based on the noise power and the history of received SRSs; and handling the missing SRS. Handling the missing SRS is based on performing at least one of: replacing an SRS measurement with a predicted SRS value for the missing SRS when the predicted SRS is available; or avoiding use of the missing SRS in a sequential SRS prediction when the predicted SRS is unavailable.

公开(公告)号：US20220278762A1

公开(公告)日：2022-09-01

申请号：US17541160

申请日：2021-12-02

Applicant: Samsung Electronics Co., Ltd.

Inventor： Rui Wang ,  Yang Li ,  Yeqing Hu ,  Junmo Sung ,  Tiexing Wang ,  Jianzhong Zhang

IPC: H04B17/373 ,  H04B7/06

Abstract: Methods and apparatuses for a channel estimation and prediction operation in a wireless communication systems. A method of a BS comprises: receiving an SRS; partitioning, based on a partition policy, a frequency band of the SRS into sub-bandwidths in a frequency domain; generating, based on previously stored CSI in memory and the partition policy, a set of chunks corresponding to respective sub-bandwidths; performing CHPD operations corresponding to the respective sub-bandwidths to generate channel parameters, wherein different CHPD operations are applied to the respective sub-bandwidths; combining the channel parameters predicted from the respective sub-bandwidths in the frequency domain; and performing, based on the combined channel parameters, a channel estimation and prediction operation.

公开(公告)号：US11233550B2

公开(公告)日：2022-01-25

申请号：US16802373

申请日：2020-02-26

Applicant: Samsung Electronics Co., Ltd.

Inventor： Ahmed Atef Ibrahim ,  Yeqing Hu ,  Young-Han Nam ,  Jianzhong Zhang

IPC: H03D3/18 ,  H04B7/0456 ,  H04B7/0417 ,  H04B7/10 ,  H04B7/0452

Abstract: A base station for generating multi-user precoders. The base station includes a transceiver configured to receive sounding reference signals (SRSs) from a set of user equipments (UEs), and a processor configured to select, for one or more UEs in the set of UEs, one or more codewords from an uplink codebook based on a correlation between the one or more codewords and the one or more SRSs; determine, using a composite downlink codebook, downlink codewords for the selected uplink codewords, respectively, the composite downlink codebook mapping uplink codewords to downlink codewords based on steering angles derived from the uplink codewords; transmit a set of pre-coded channel state information reference signals (CSI-RSs) to the one or more UEs, wherein the pre-coded CSI-RSs are pre-coded based on the determined downlink codewords; and identify a downlink channel matrix based on CSI feedback from the one or more UEs and the pre-coded CSI-RSs.

公开(公告)号：US12301387B2

公开(公告)日：2025-05-13

申请号：US18446386

申请日：2023-08-08

Applicant: Samsung Electronics Co., Ltd.

Inventor： Yeqing Hu ,  Yang Li ,  Jianzhong Zhang

IPC: H04L25/02

Abstract: Methods and apparatuses for canonical model (CM) based channel status information enhancement. A base station includes a transceiver configured to receive a reference signal from a user equipment (UE) and a processor operably coupled to the transceiver. The processor is configured to perform a linear transformation based on the received reference signal, select a basis set based on the linear transformation, select a set of kernels based on the selected basis set and the linear transformation, and reconstruct a channel based on the selected set of kernels.

公开(公告)号：US20240056138A1

公开(公告)日：2024-02-15

申请号：US18365874

申请日：2023-08-04

Applicant: Samsung Electronics Co., Ltd.

Inventor： Yeqing Hu ,  Xiaowen Tian ,  Yang Li ,  Tiexing Wang ,  Jianzhong Zhang

IPC: H04B7/0456 ,  H04L25/02

CPC classification number: H04B7/0456 ,  H04L25/0204 ,  H04L25/0256

Abstract: A method includes identifying ACF information by: obtaining channel information including multiple channels of expected operation scenarios; and based on the channel information for each of the channels, determining MMSE channel estimation (CE) weights expressed in a form of ACFs and an SNR, and covariance matrices. The method includes clustering the MMSE CE weights into K clusters. A center ACF weight of each of the K clusters represents a codeword. The method includes determining a distance metric based on a cluster distance after a re-clustering. The method includes, in response to a determination that cluster distances before and after the clustering differ from each other by a non-negligibly, iteratively re-clustering the ACF information thereby updating the center ACF weights and cluster distances. The method includes generating the codebook to include an index k of each of the K clusters and the center ACF weight of each of the K clusters.

公开(公告)号：US11616663B2

公开(公告)日：2023-03-28

申请号：US17143130

申请日：2021-01-06

Applicant: Samsung Electronics Co., Ltd.

Inventor： Rui Wang ,  Yang Li ,  Junmo Sung ,  Yeqing Hu ,  Jianzhong Zhang

IPC: H04L25/02 ,  H04W24/08 ,  H04B7/0452

Abstract: Methods and apparatuses in a wireless communication system. A method of operating a base station (BS) includes receiving information of uplink transmissions; storing the received information; performing, based on the received information, channel parameter tracking operations to generate channel parameters, wherein the channel parameter tracking operations are configured with different configuration parameters; and performing, based on the channel parameters, a channel coefficient prediction operation to generate channel state information (CSI).