公开(公告)号：US20230087900A1

公开(公告)日：2023-03-23

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

Abstract: A base station includes a controller configured to configure an MRS resource set comprising a group of MRS resources, each MRS resource comprising a set of MRS antenna ports. If at least two MRS antenna ports belong to a same MRS resource, then the at least two MRS antenna ports are quasi co-located with respect to a first set of QCL parameters, else if the at least two MRS antenna ports belong to a same MRS resource set, then the at least two MRS antenna ports are quasi co-located with respect to a second set of QCL parameters, and else the at least two MRS antenna ports are not quasi co-located with respect to either the first set or the second set of QCL parameters. The MRS is a CSI-RS for estimating a CSI and at least one of the first set and the second set of QCL parameters.

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：US20210297115A1

公开(公告)日：2021-09-23

申请号：US17303710

申请日：2021-06-04

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

Abstract: A base station includes a controller configured to configure an MRS resource set comprising a group of MRS resources, each MRS resource comprising a set of MRS antenna ports. If at least two MRS antenna ports belong to a same MRS resource, then the at least two MRS antenna ports are quasi co-located with respect to a first set of QCL parameters, else if the at least two MRS antenna ports belong to a same MRS resource set, then the at least two MRS antenna ports are quasi co-located with respect to a second set of QCL parameters, and else the at least two MRS antenna ports are not quasi co-located with respect to either the first set or the second set of QCL parameters. The MRS is a CSI-RS for estimating a CSI and at least one of the first set and the second set of QCL parameters.

公开(公告)号：US10567060B2

公开(公告)日：2020-02-18

申请号：US14806413

申请日：2015-07-22

Applicant: Samsung Electronics Co., Ltd.

Inventor： Md. Saifur Rahman ,  Eko Onggosanusi ,  Young-Han Nam ,  Yang Li

IPC: H04B7/06 ,  H04B7/0456

Abstract: Methods and apparatus for vector quantization of feedback and processing of vector quantized feedback components. A method of operating a UE for vector quantization of feedback includes identifying a grouping method for grouping channel coefficients for vector quantization and identifying a vector quantization codebook for vector quantization of grouped vectors based on one or more control signals received from an eNB. The method includes computing channel coefficients based on at least one channel measurement and grouping the computed channel coefficients according to the identified grouping method to form a set of vectors. The method also includes performing vector quantization of the vectors using the identified vector quantization codebook and processing the quantized vectors into one or more feedback signals. Additionally, the method includes transmitting the one or more feedback signals to the eNB.

公开(公告)号：US10523345B2

公开(公告)日：2019-12-31

申请号：US15891244

申请日：2018-02-07

Applicant: Samsung Electronics Co., Ltd

Inventor： Jin Yuan ,  Yang Li ,  Gary Xu ,  Robert Monroe ,  Jianzhong Zhang ,  Sridhar Rajagopal

IPC: H04B17/12 ,  H04B1/40 ,  H04B7/0456 ,  H01Q3/26 ,  H01Q21/26 ,  H01Q21/28 ,  H04B17/21 ,  H01Q21/00 ,  H04B7/06 ,  H04B17/309 ,  H04B17/336

Abstract: Methods and Apparatuses for a transceiver calibration and antenna array operation in a multi-input multi-output (MIMO) system. One of the methods for operation of one or more of the apparatuses comprises sending a calibration signal and a pre-designed training sequence, via a coupling network, receiving a calibration signal and a pre-designed training sequence that is sent by the transceiver array in a time slotted pattern via a coupling network, generating an Rx calibration measurement (R1) based on one or more uplink signals received via antenna array and the coupling network, generating a Tx calibration measurement (T1) based on receipt of the calibration signal from each of antennas via the coupling network; and performing a joint Tx/Rx (TRx) calibration based on HR, R1, and T1, where H is a channel response in air interface, R is a channel response of receivers in transceiver array.

公开(公告)号：US09900198B2

公开(公告)日：2018-02-20

申请号：US14997356

申请日：2016-01-15

Applicant: Samsung Electronics Co., Ltd

Inventor： Young-Han Nam ,  Jianzhong Zhang ,  Eko Onggosanusi ,  Taeyoung Kim ,  Hoondong Noh ,  Yang Li

IPC: H04W4/00 ,  H04L27/26 ,  H04L5/00

CPC classification number: H04L27/2601 ,  H04L5/0023 ,  H04L5/0051

Abstract: A mobile station includes a receiver configured to receive containing a complex-valued modulation symbol from a base station, a processor configured to extract the complex-valued modulation symbol from the signal, wherein in response to being configured with code-division multiplex-4 (CDM-4), the complex-valued modulation symbol is mapped using a reference signal sequence. A base station includes a processor configured to generate a reference signal sequence for each subcarrier and OFDM symbol, and in response to being configured with code-division multiplex-4 (CDM-4), map a reference signal sequence to the complex-valued modulation symbols. Other embodiments including a method for performing communication on multiple input multiple output (MIMO) radio links are also disclosed.

公开(公告)号：US20180048375A1

公开(公告)日：2018-02-15

申请号：US15672152

申请日：2017-08-08

Applicant: Samsung Electronics Co., Ltd.

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

IPC: H04B7/06 ,  H04B17/309 ,  H04B7/0408

CPC classification number: H04B7/0695 ,  H04B7/024 ,  H04B7/0408 ,  H04B7/0456 ,  H04B7/0619 ,  H04B7/088 ,  H04B17/309 ,  H04W16/28 ,  H04W72/046 ,  H04W88/06

Abstract: A method of user equipment (UE) for beam management in a wireless communication system. The method comprises receiving, from a base station (BS), at least two groups of Tx beams comprising transmit (Tx) signals generated from different antenna panels, the at least two groups of Tx beams transmitted through reference signals; receiving, from the BS, configuration information including a selection constraint for the at least two groups of Tx beams; measuring, based on the configuration information, at least one beam from each of the at least two groups of beams; selecting at least one Tx beam from each of the at least two groups and a same Rx beam set as an Rx beam corresponding to respective selected Tx beams; and transmitting, to the BS, a reporting message including information of the selected Tx beams and the selected same Rx beam set corresponding to the Rx beam.

公开(公告)号：US09893777B2

公开(公告)日：2018-02-13

申请号：US14800305

申请日：2015-07-15

Applicant: Samsung Electronics Co., Ltd.

Inventor： Eko Onggosanusi ,  Jianzhong Zhang ,  Yang Li ,  Young-Han Nam ,  Boon Loong Ng

IPC: H04B7/04 ,  H04B7/06 ,  H04W24/08 ,  H04L5/00 ,  H04B7/0456

CPC classification number: H04B7/0456 ,  H04B7/0421 ,  H04B7/0626 ,  H04L5/0048

Abstract: A method for operating a base station includes allocating at least one respective CSI-RS port to each of a plurality of user equipments (UEs), precoding the at least one respective CSI-RS port with a first respective precoding matrix for each of the plurality of UEs, transmitting the at least one respective CSI-RS port precoded with the first respective precoding matrix through a channel to each of the plurality of UEs, receiving an index of a second respective precoding matrix from each of the plurality of UEs, wherein the second respective precoding matrix is determined according to the at least respective one CSI-RS port precoded with the first precoding matrix as received through the channel by each of the plurality of UEs, and precoding respective transmission data with the first respective precoding matrix and the second respective precoding matrix to each of the plurality of UEs.

公开(公告)号：US09825742B2

公开(公告)日：2017-11-21

申请号：US14874252

申请日：2015-10-02

Applicant: Samsung Electronics Co., Ltd.

Inventor： Young-Han Nam ,  Yang Li ,  Eko Onggosanusi ,  Md. Saifur Rahman ,  Taeyoung Kim

IPC: H04L5/00 ,  H04B7/04 ,  H04B7/06 ,  H04L1/00 ,  H04W24/00 ,  H04W48/00 ,  H04W88/02 ,  H04W88/08

CPC classification number: H04M3/5125 ,  H04B7/0478 ,  H04B7/0639 ,  H04L1/00 ,  H04L5/0023 ,  H04L5/0048 ,  H04L65/1006 ,  H04L65/105 ,  H04L65/1073 ,  H04L65/80 ,  H04M3/5175 ,  H04M3/5191 ,  H04M2203/402 ,  H04W24/00 ,  H04W48/00 ,  H04W88/02 ,  H04W88/08

Abstract: A base station capable of communicating with a user equipment (UE) includes a transceiver configured to transmit Channel State Information-Reference Signal (CSI-RS) according to a CSI-RS configuration comprising a number of antenna ports, and downlink signals containing the CSI-RS configuration and a precoding-matrix-construction configuration for precoding matrix indicator (PMI) reporting on physical downlink shared channels (PDSCH), the precoding-matrix-construction configuration comprising a first and second sampling factors, O1 and O2, and a first and second numbers, N1 and N2, receive, from the UE, uplink signals containing a precoding matrix indicator (PMI) derived using the CSI-RS according to the precoding-matrix-construction configuration, a controller configured to convert the PMI to one of predetermined precoding matrices. Other embodiments including UEs and methods are disclosed.

公开(公告)号：US20170257884A1

公开(公告)日：2017-09-07

申请号：US15445958

申请日：2017-02-28

Applicant: Samsung Electronics Co., Ltd

Inventor： Md. Saifur Rahman ,  Eko Onggosanusi ,  Young-Han Nam ,  Yang Li

IPC: H04W74/00 ,  H04W24/10 ,  H04L5/00 ,  H04B7/06

CPC classification number: H04W74/004 ,  H04B7/0413 ,  H04B7/0469 ,  H04B7/0626 ,  H04B7/065 ,  H04B7/0689 ,  H04L5/0048 ,  H04W24/10

Abstract: The method comprises receiving periodic CSI feedback configuration information including a periodicity value and an offset value corresponding to a first CSI report, and at least one periodicity value and at least one offset value corresponding to a second CSI report, measuring a first CSI reference signal (CSI-RS) and a second CSI-RS configured for a periodic CSI reporting based on at least two different enhanced MIMO types (eMIMO-Types), generating the first CSI report and the second CSI report for the first eMIMO-Type and the second eMIMO-Type, respectively, determining a periodic reporting interval for each of the first CSI report and the second CSI report, and reporting the first and second CSI reports based on the determined periodic reporting intervals using a physical uplink control channel (PUCCH) format 2 or a PUCCH format 3 or a combination of the PUCCH format 2 and the PUCCH format 3.