公开(公告)号：US20250158683A1

公开(公告)日：2025-05-15

申请号：US18912142

申请日：2024-10-10

Applicant: Samsung Electronics Co., Ltd.

Inventor： Davydov ALEXEI ,  Denis ESIUNIN ,  Dikarev DMITRY ,  Ermolaev GREGORY ,  Morozov GREGORY ,  Pestretsov VLADIMIR

IPC: H04B7/06 ,  H04L5/00 ,  H04L27/26

Abstract: The present disclosure relates to a 5G communication system or a 6G communication system for supporting higher data rates beyond a 4G communication system such as long term evolution (LTE). The disclosure relates to a method for transmitting channel state information reference signal (CSI-RS). The technical result includes increased performance and flexibility of CSI-RS generation and transmission framework, unified CSI-RS structure, and reduced transmission overhead. A method for transmitting channel state information reference signal is provided. The method includes setting, at a base station, CSI-RS transmission configuration information, including one or more code-division multiplexing (CDM) groups with uniform frequency distribution of resource elements (RE) in each CDM group, transmitting the CSI-RS transmission configuration information from the base station (BS) to user equipment (UE), generating, for each antenna port of the base station, a CSI-RS modulated by orthogonal cover code (OCC) in frequency domain (FD) across resource elements according to discrete Fourier transform (DFT) vector and in time domain (TD) across one or more Orthogonal Frequency-Division Multiplexing (OFDM) symbols according to Walsh-Hadamard (WH) code, and transmitting the CSI-RS from the BS to the UE according to the CSI-RS transmission configuration.