公开(公告)号：US11653240B2

公开(公告)日：2023-05-16

申请号：US16947248

申请日：2020-07-24

Applicant: Samsung Electronics Co., Ltd.

Inventor： Krishna Sayana ,  Young-Han Nam ,  Jin-Kyu Han ,  Boon Loong Ng

IPC: H04W24/10 ,  H04B7/024 ,  H04B7/06

CPC classification number: H04W24/10 ,  H04B7/024 ,  H04B7/0626

Abstract: A method and apparatus report channel state information (CSI) feedback of a user equipment (UE) in a coordinated multipoint communication system. The method includes identifying, when downlink transmissions to the UE are configured with at least two CSI subframe subsets, an interference measurement resource within one of the CSI subframe subsets belonging to a CSI reference resource. The method also includes using the identified interference measurement resource to derive an interference measurement. The apparatus includes a controller configured to, when downlink transmissions to the UE are configured with at least two CSI subframe subsets, identify an interference measurement resource within one of the CSI subframe subsets belonging to a CSI reference resource. The controller is configured to use the identified interference measurement resource to derive an interference measurement.

公开(公告)号：US20220353920A1

公开(公告)日：2022-11-03

申请号：US17813296

申请日：2022-07-18

Applicant: Samsung Electronics Co., Ltd.

Inventor： Boon Loong Ng ,  Young-Han Nam ,  Vikram Chandrasekhar

IPC: H04W74/08 ,  H04W72/04 ,  H04W48/10 ,  H04W74/00 ,  H04W48/12

Abstract: A method of a user equipment (UE) for control resource set (CORESET) configuration in a wireless communication system is provided. The method comprises receiving, from a base station (BS), system information, determining whether the system information includes a random access channel (RACH) CORESET configuration, determining a CORSET to use for transmitting data based on whether the RACH CORESET configuration is included in the system information, and receiving, from the BS, the data based on the determined CORESET over an RACH.

公开(公告)号：US11259191B2

公开(公告)日：2022-02-22

申请号：US16693074

申请日：2019-11-22

Applicant: Samsung Electronics Co., Ltd.

Inventor： Hao Chen ,  Vishnu Ratnam ,  Young-Han Nam ,  Joonyoung Cho ,  Jianzhong Zhang

IPC: H04W16/18 ,  G06N3/02 ,  H04B17/336 ,  H04W24/08 ,  H04B7/06 ,  H04B7/0413

Abstract: A server, method, and computer-readable storage medium for coverage prediction in wireless networks. The server includes a memory storing instructions and a processor operably connected to the memory, which is configured to execute the instructions to cause the server to identify a region of interest (RoI) for the coverage prediction; determine, using a neural network, a set of values for a system performance metric for areas in the RoI, respectively; and generate the coverage prediction for the RoI which associates the areas in the RoI with a determined value in the set of values. The set of values for the system performance metric is determined based on a plurality of data samples for a set of RoIs which include at least one of building height, terrain height, foliage height, clutter data that classifies land cover, line-of-sight indication data, antenna height, and ground truth data for the system performance metric.

公开(公告)号：US11139862B2

公开(公告)日：2021-10-05

申请号：US14066379

申请日：2013-10-29

Applicant: Samsung Electronics Co., LTD

Inventor： Krishna Sayana ,  Boon Loong Ng ,  Young-Han Nam ,  Himke van der Velde ,  Gerardus Johannes Petrus van Lieshout

IPC: H04B7/024 ,  H04L5/00 ,  H04B7/0417

Abstract: A method and an apparatus indicate and identify a ZP-CSI-RS configuration. The method for identifying includes identifying a DCI format and the ZP-CSI-RS configuration in response to receiving one or more control messages where a first set of ZP-CSI-RS configuration or configurations are configured to be used for DCI Format 1A and a second set of ZP-CSI-RS configuration or configurations are configured to be used for DCI Format 2D or 2C. The method also includes identifying a PDSCH rate matching based on the identified ZP-CSI-RS configuration. The method for indicating includes transmitting a dynamic signaling control message comprising an indication of a DCI format. The method also includes transmitting transmit a higher layer signaling control message comprising an indication of the ZP-CSI-RS configuration or configurations.

公开(公告)号：US11115103B2

公开(公告)日：2021-09-07

申请号：US16575206

申请日：2019-09-18

Applicant: Samsung Electronics Co., Ltd.

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

IPC: H04L1/00 ,  H04B7/06 ,  H04B7/0456 ,  H04B7/024 ,  H04B7/08 ,  H04B17/309 ,  H04B7/0408 ,  H04W16/28 ,  H04W72/04 ,  H04W88/06

Abstract: A method of user equipment (UE) for beam management in a wireless communication system 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：US11089579B2

公开(公告)日：2021-08-10

申请号：US15346584

申请日：2016-11-08

Applicant: Samsung Electronics Co., Ltd

Inventor： Young-Han Nam ,  Thomas David Novlan ,  Boon Loong Ng ,  Sudhir Ramakrishna ,  Li Guo ,  Jianzhong Zhang

IPC: H04W72/04 ,  H04L5/00 ,  H04B7/0452 ,  H04B7/06 ,  H04W4/70 ,  H04W24/10

Abstract: A user equipment (UE) in a wireless communication system. The UE comprises at least one processor configured to determine a first subcarrier spacing and a transceiver configured to transmit, to a base station (BS), random access signals generated with the first subcarrier spacing and receive a downlink control signaling comprising a physical (PHY) resource configuration that includes a second subcarrier spacing. The UE further comprises at least one processor configured to set the PHY resource configuration for at least one of uplink transmission or downlink reception.

公开(公告)号：US10993257B2

公开(公告)日：2021-04-27

申请号：US16663292

申请日：2019-10-24

Applicant: Samsung Electronics Co., Ltd.

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

IPC: H04B7/0413 ,  H04W74/00 ,  H04B7/0417 ,  H04B7/0426 ,  H04B7/0452 ,  H04B7/0456 ,  H04B7/06 ,  H04L1/20 ,  H04L5/22 ,  H04L5/00 ,  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.

公开(公告)号：US10911111B2

公开(公告)日：2021-02-02

申请号：US16594918

申请日：2019-10-07

Applicant: Samsung Electronics Co., Ltd.

Inventor： Yeqing Hu ,  Ahmed Ibrahim ,  Young-Han Nam ,  Jianzhong Zhang ,  Eun Yong Kim

IPC: H04L1/02 ,  H04B7/0456 ,  H04B7/0417 ,  H04B7/0452

Abstract: A method of a base station (BS) in a wireless communication system is provided, The method comprises: receiving, from a user equipment (UE), a 1st layer sounding reference signal (SRS); arranging the 1st layer SRS based on two antenna polarizations of an antenna system of the BS; identifying a dominant direction of a channel based on the 1st layer SRS; identifying a coefficient between two antenna polarizations based on the 1st layer SRS; constructing a 2-layer channel matrix based on the identified dominant direction and the identified coefficient; and transmitting, to the UE, a downlink signal via the antenna system based on the constructed 2-layer channel matrix.

公开(公告)号：US10805886B2

公开(公告)日：2020-10-13

申请号：US15651815

申请日：2017-07-17

Applicant: Samsung Electronics Co., Ltd.

Inventor： Young-Han Nam ,  Jianzhong Zhang

IPC: H04W52/14 ,  H04L25/02 ,  H04W52/32 ,  H04W72/00 ,  H04L5/00 ,  H04W52/42 ,  H04W52/36 ,  H04W72/04 ,  H04W52/28 ,  H04W52/34

Abstract: A mobile station for use in a wireless network that operates according to the Long-Term Evolution Advanced (LTE-A) standard is configured to transmit an aperiodic sounding reference signal (SRS) to a base station in response to a triggering grant received from the base station. The bandwidth on which the mobile station transmits the aperiodic SRS depends on a type of the triggering grant. The type of the triggering grant is one of a downlink grant, an uplink multiple-input, multiple-output (MIMO) grant, and an uplink single-input, multiple-output (SIMO) grant.

公开(公告)号：US10797913B2

公开(公告)日：2020-10-06

申请号：US16252252

申请日：2019-01-18

Applicant: Samsung Electronics Co., Ltd.

Inventor： Yeqing Hu ,  Rui Wang ,  Boon Loong Ng ,  Young-Han Nam ,  Jin Yuan ,  Gary Xu ,  Jianzhong Zhang

IPC: H04L25/02 ,  H04L5/14 ,  H04B7/10 ,  H04B7/0413 ,  H04B7/0456 ,  H04L5/00

Abstract: Reciprocity base frequency division duplex (FDD) multiple-input-multiple-output (MIMO) downlink (DL) channel Channel-State Information (CSI) acquisition is provided. A base station (BS) includes a transceiver configured to measure uplink (UL) sounding reference signals (SRSs) at a UL carrier frequency, using two polarization components of an antenna array of the BS, and a processor configured to determine a quantity of propagation paths between the BS and a user equipment (UE), for each of the determined propagation paths, extract propagation parameters from the UL SRS measurements, for each of the determined propagation paths, predict a downlink (DL) channel based on the extracted propagation parameters and a DL carrier frequency, and generate a precoding channel matrix for the UE by summing the predicted DL channels for each of the determined propagation paths and for each of the two polarization components of the antenna array of the BS.