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).

公开(公告)号：US10887143B2

公开(公告)日：2021-01-05

申请号：US15582575

申请日：2017-04-28

Applicant: Samsung Electronics Co., Ltd

Inventor： Li Guo ,  Young-Han Loong Nam ,  Boon Loong Ng ,  Sudhir Ramakrishna ,  Yang Li

IPC: H04L5/00 ,  H04L27/26 ,  H04W72/04 ,  H04W74/00

Abstract: A base station includes a controller configured to map initial access signals, each initial access signal corresponding to one of a plurality of transmit beams, to a subset or all of a plurality of predefined time locations in at least one periodicity, and a transmitter configured to transmit the mapped initial access signals to a UE and indicate OFDM symbols that are not mapped with the initial access signals in the one periodicity to the UE. A UE includes a transceiver configured to receive initial access signals mapped to a subset or all of time locations in one periodicity from a base station, the each initial access signal corresponding to one of a plurality of different beams, and a controller configured to perform an initial access to the base station and receive the indication of OFDM symbols that are not mapped with the initial access signals in the one periodicity.