公开(公告)号：US12250035B2

公开(公告)日：2025-03-11

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

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：US20240429982A1

公开(公告)日：2024-12-26

申请号：US18603107

申请日：2024-03-12

Applicant: Samsung Electronics Co., Ltd.

Inventor： Thuy Van Nguyen ,  Yang Li ,  R A Nadisanka Perera Rupasinghe

IPC: H04B7/06 ,  H04B17/12 ,  H04B17/21

Abstract: A method performed by a network entity includes determining a target timing mismatch for a phase timing slope between first and second channel state information-reference signal (CSI-RS) resources, and determining, based on the target timing mismatch, a first band separation between a first calibrated phase for the first the second CSI-RS resource and a second calibrated phase for the first and the second CSI-RS resource. The method further includes determining a first frequency band for the first calibrated phase, and determining, based on the band separation, a second frequency band for the second calibrated phase. The method further includes determining, based on the band separation between the first calibrated phase the second calibrated phase, a first phase timing slope between the first the second CSI-RS resource, and performing joint transmission from a first TRP and a second TRP based on the first phase timing slope.

公开(公告)号：US20240429974A1

公开(公告)日：2024-12-26

申请号：US18416510

申请日：2024-01-18

Applicant: Samsung Electronics Co., Ltd.

Inventor： R A Nadisanka Perera Rupasinghe ,  Yang Li ,  Thuy Van Nguyen ,  Namjeong Lee ,  Dongwook Kim ,  Kyung-joong Kim

IPC: H04B7/0413 ,  H04B17/11 ,  H04B17/21

Abstract: A method of operating a network entity includes receiving, via a first TRP and a second TRP, information associated with a SRS from a UE, and estimating a channel based on the information associated with the SRS. The method further includes, for N iterations: transmitting, via a first CSI-RS port from a CSI-RS resource, from the first TRP, a CSI-RS; transmitting, via a second CSI-RS port from the CSI-RS resource, from the second TRP, the CSI-RS with a controlled phase offset; receiving a PMI report associated with the CSI-RS including a measured phase offset between the first CSI-RS port and the second CSI-RS port; and updating the controlled phase offset, based on the measured phase offset. The method further includes, after the N iterations, based on the controlled phase offset and the measured phase offset, determining a phase mis-match for phase calibration between the first TRP and the second TRP.

公开(公告)号：US12052069B2

公开(公告)日：2024-07-30

申请号：US18057173

申请日：2022-11-18

Applicant: Samsung Electronics Co., Ltd.

Inventor： Young Han Nam ,  Boon Loong Ng ,  Yang Li ,  Sudhir Ramakrishna ,  Md. Saifur Rahman

IPC: H04B7/024 ,  H04B7/06 ,  H04L5/00

CPC classification number: H04B7/024 ,  H04B7/0617 ,  H04B7/0626 ,  H04L5/0023 ,  H04L5/0035 ,  H04L5/0053 ,  H04L5/006 ,  H04L5/0091

Abstract: Methods and apparatuses for transmitting and receiving measurement reference signal (MRS) configurations in a wireless communication system. A method includes transmitting to a user equipment (UE), or receiving from a base station, information on MRS configurations that include information on an identity of an MRS, information on a set of large-scale channel properties associated with a quasi co-location (QCL) relationship for a demodulation reference signal (DMRS) of a physical downlink shared channel (PDSCH), and information on a bandwidth for the MRS. The method further includes transmitting to the UE, or receiving from a base station, downlink control information (DCI) scheduling the PDSCH and indicating an MRS configuration for the PDSCH. The set of large-scale channel properties include, based on type, one or more of doppler shift, doppler spread, average delay, and delay spread.

公开(公告)号：US20240187055A1

公开(公告)日：2024-06-06

申请号：US18484293

申请日：2023-10-10

Applicant: Samsung Electronics Co., Ltd.

Inventor： Thuy Van Nguyen ,  Yang Li ,  Yeqing Hu ,  R A Nadisanka Perera Rupasinghe ,  Jianzhong Zhang

IPC: H04B7/0456 ,  H04L1/1812 ,  H04W72/23

CPC classification number: H04B7/0486 ,  H04L1/1812 ,  H04W72/23

Abstract: A network entity includes a memory and a processor operable coupled to the memory. The processor is configured to determine a hybrid joint transmission (Hybrid-JT) signal for transmission from a wireless network associated with the network entity to a user equipment (UE). The Hybrid-JT signal includes a diversity joint transmission (Div-JT) component and a multiplexing joint transmission (Mux-JT) component. The processor is further configured to instruct the wireless network to transmit the Hybrid-JT signal to the UE.

公开(公告)号：US20240056144A1

公开(公告)日：2024-02-15

申请号：US18353841

申请日：2023-07-17

Applicant: Samsung Electronics Co., Ltd.

Inventor： R A Nadisanka Perera Rupasinghe ,  Tiexing Wang ,  Yang Li

IPC: H04B7/06 ,  H04B17/336 ,  H04B17/373

CPC classification number: H04B7/0608 ,  H04B17/336 ,  H04B17/373

Abstract: Methods and apparatuses for throughput prediction. A base station includes a transceiver configured to receive a set of input metrics and a processor operably coupled to the transceiver. The processor is configured to calculate, based on the set of input metrics, a transmit antenna selection (TAS) throughput prediction and further configured to generate, based on the TAS throughput prediction, a predicted TAS throughput result.

公开(公告)号：US11683712B2

公开(公告)日：2023-06-20

申请号：US17348621

申请日：2021-06-15

Applicant: Samsung Electronics Co., Ltd.

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

IPC: H04W24/10 ,  H04L5/00 ,  H04B17/373

CPC classification number: H04W24/10 ,  H04B17/373 ,  H04L5/0053

Abstract: Methods and apparatuses for hybrid hierarchical parameter tracking for CSI estimation in a wireless communication system. The methods and apparatuses include receiving uplink signals comprising a channel state information (CSI) report or a sounding reference signal (SRS); performing a channel parameter tracking operation to determine channel parameters that change less than a first threshold amount based on the received uplink signals; performing a channel parameter prediction operation to determine the channel parameters that change greater than a second threshold amount on an output of the channel parameter tracking operation; and performing a channel prediction operation for downlink channels based on an output of the channel parameter tracking operation and the channel parameter prediction operation.

公开(公告)号：US20220022079A1

公开(公告)日：2022-01-20

申请号：US17348621

申请日：2021-06-15

Applicant: Samsung Electronics Co., Ltd.

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

IPC: H04W24/10 ,  H04B17/373 ,  H04L5/00

Abstract: Methods and apparatuses for hybrid hierarchical parameter tracking for CSI estimation in a wireless communication system. The methods and apparatuses include receiving uplink signals comprising a channel state information (CSI) report or a sounding reference signal (SRS); performing a channel parameter tracking operation to determine channel parameters that change less than a first threshold amount based on the received uplink signals; performing a channel parameter prediction operation to determine the channel parameters that change greater than a second threshold amount on an output of the channel parameter tracking operation; and performing a channel prediction operation for downlink channels based on an output of the channel parameter tracking operation and the channel parameter prediction operation.

公开(公告)号：US20210219161A1

公开(公告)日：2021-07-15

申请号：US17129797

申请日：2020-12-21

Applicant: Samsung Electronics Co., Ltd.

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

IPC: H04W24/10 ,  H04W24/08

Abstract: A method for operating a base station comprises receiving channel information from a plurality of UEs; determining, based on the channel information, one or more UEs on which to base a channel prediction; computing a first set of metrics and a second set of metrics corresponding to the plurality of UEs, wherein computing the first set of metrics has a lower complexity than computing the second set of metrics; performing a selection process on the plurality of UEs based on the first and second set of metrics associated with the plurality of UEs; selecting a first subset of UEs from the plurality of UEs based on a first set of metrics; selecting, from the first subset, a second subset of UEs based on a second set of metrics; and performing the channel prediction based on the second subset of UEs.

公开(公告)号：US20210218601A1

公开(公告)日：2021-07-15

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

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).