公开(公告)号：US20240171244A1

公开(公告)日：2024-05-23

申请号：US18495606

申请日：2023-10-26

Applicant: Samsung Electronics Co., Ltd.

Inventor： Shouvik Ganguly ,  Young Han Nam ,  Jianhua Mo

IPC: H04B7/06 ,  H04L5/00 ,  H04W72/232

CPC classification number: H04B7/0626 ,  H04B7/0632 ,  H04L5/0051 ,  H04W72/232

Abstract: Methods and apparatuses for channel state information reporting in advanced MIMO antenna systems is provided. The method comprises: receiving information for an analog beam and an R CSI-RS resources; constructing an analog beam codebook; deriving sets of PMIs corresponding to analog beams, wherein each set of R sets of PMIs corresponds to an analog beam of the analog beams associated with the R CSI-RS resources; identifying a set of digital beams corresponding to each of the analog beams; identifying a set of hybrid beams corresponding to each of the R CSI-RS resources, wherein the set of the hybrid beams comprises the set of digital beams and the analog beam, respectively; identifying a subset of the set of hybrid beams using an index to generate a PMI corresponding to the analog beams; and transmitting a CSI report including the PMI and the subset of the set of hybrid beams.

公开(公告)号：US20250167844A1

公开(公告)日：2025-05-22

申请号：US18893897

申请日：2024-09-23

Applicant: Samsung Electronics Co., Ltd.

Inventor： Xinliang Zhang ,  Young Han Nam ,  Shouvik Ganguly ,  Vitali Loseu

IPC: H04B7/06

Abstract: For an O-RAN system, supported hybrid beamforming configurations are indicated based on a number of analog ports, a number of digital ports, a number of analog ports per transceiver, and supported codebooks. A hybrid beamforming configuration to be employed includes control bit vectors for phase-shifters, each control bit vector mapped to a phase value, an in-phase (I) value and a quadrature (Q) value. The hybrid beamforming configuration may include analog and digital beamforming parameters applicable to frequency bands or subbands or joint phase-time array parameters.

公开(公告)号：US20250071612A1

公开(公告)日：2025-02-27

申请号：US18789579

申请日：2024-07-30

Applicant: Samsung Electronics Co., Ltd.

Inventor： Shouvik Ganguly ,  Aniruddh Venkatakrishnan ,  Young Han Nam ,  Mustafa Furkan Ozkoc

IPC: H04W28/06 ,  H04L5/00 ,  H04W28/18

Abstract: Methods and apparatuses for a bit compression of uplink fronthaul data in wireless communication systems are provided. The methods of UE comprise: identifying uplink fronthaul data to reduce a data load on an uplink fronthaul link, wherein the uplink fronthaul link is between the RU and a DU; processing the uplink fronthaul data to obtain a set of representative values for a compression operation; selecting, based on the set of representative values, at least one encoding parameter for the compression operation; and transmitting, to the DU, the uplink fronthaul data that is compressed based on the compression operation.

公开(公告)号：US20240322879A1

公开(公告)日：2024-09-26

申请号：US18402441

申请日：2024-01-02

Applicant: Samsung Electronics Co., Ltd.

Inventor： Shouvik Ganguly ,  Young Han Nam

IPC: H04B7/06 ,  H04B17/318

CPC classification number: H04B7/0626 ,  H04B7/0632 ,  H04B17/328

Abstract: Methods and apparatuses for channel state information reference signal in wireless communication systems are provided. The methods of BS comprise: identifying first information corresponding to a number of antenna ports associated with transmissions of CSI-RSs; identifying, a first size of CDM groups associated with the number of antenna ports and a first shape of the CDM groups; identifying second information from the first information; identifying a starting SC index and a starting symbol index; identifying, based on the number of antenna ports associated with a CSI-RS transmission and a predetermined frequency domain granularity of channel state information, a size of RB cluster for the resource allocation; and transmitting, to a UE, resource configuration information indicating at least one of the size of RB cluster, the first size of the CDM groups, the first shape of the CDM groups, the starting SC index, and the starting symbol index.

公开(公告)号：US20200099434A1

公开(公告)日：2020-03-26

申请号：US16583142

申请日：2019-09-25

Applicant: Samsung Electronics Co., Ltd.

Inventor： Rui Wang ,  Junmo Sung ,  Jianzhong Zhang ,  Young-Han Nam ,  Shouvik Ganguly

IPC: H04B7/06 ,  H04B7/0452

Abstract: A method of a base station (BS) for channel state information (CSI) estimation in a wireless communication system is provided. The method of BS comprises: receiving, from a user equipment (UE), a sounding reference signal (SRS) for the CSI estimation; determining whether the received SRS is measurable for the CSI estimation; initializing a set of uplink parameters based on a result of the determination; updating the set of uplink parameters based on SRS history stored in a buffer; and performing, using a channel prediction model and channel reciprocity, the downlink CSI estimation based on the updated parameters.