公开(公告)号：US20220141073A1

公开(公告)日：2022-05-05

申请号：US17494464

申请日：2021-10-05

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Soo Yeob Jung ,  Pan Soo Kim ,  Joon Gyu Ryu ,  Gyeong Rae Im ,  Dong Hyun Jung

IPC: H04L27/26

Abstract: A method for receiving a wireless signal, performed by a first communication node, may comprise: storing a wireless signal received by the first communication node as samples in a buffer; performing partial correlation operations on the stored samples by a plurality of partial correlators; performing a first FFT operation on results of the partial correlation operations; performing a cumulative product operation on results of the first FFT operation; performing a second FFT operation based on a result of the cumulative product operation; and performing synchronization estimation based on the results of the first FFT operation and a result of the second FFT operation.

公开(公告)号：US12114280B2

公开(公告)日：2024-10-08

申请号：US17408830

申请日：2021-08-23

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jung Bin Kim ,  Pan Soo Kim ,  Dong Hyun Jung

IPC: H04W56/00 ,  H04W74/0833

CPC classification number: H04W56/0045 ,  H04W56/001 ,  H04W74/0841

Abstract: A timing control method performed by a terminal included in a communication network may include: configuring an initial timing reference based on time information obtained from the communication network; receiving a first downlink (DL) signal from a base station; based on the initial timing reference and the first DL signal, obtaining first transmission time information that is information on a timing when the first DL signal is transmitted by the base station and first reception time information that is information on a timing when the first DL signal is received by the terminal; determining a first timing advance (TA) value based on comparison between the first reception time information and the first transmission time information; and adjusting an uplink (UL) transmission timing for the base station based on the first TA value.

公开(公告)号：US11496348B2

公开(公告)日：2022-11-08

申请号：US17494464

申请日：2021-10-05

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Soo Yeob Jung ,  Pan Soo Kim ,  Joon Gyu Ryu ,  Gyeong Rae Im ,  Dong Hyun Jung

IPC: H04L27/26

Abstract: A method for receiving a wireless signal, performed by a first communication node, may comprise: storing a wireless signal received by the first communication node as samples in a buffer; performing partial correlation operations on the stored samples by a plurality of partial correlators; performing a first FFT operation on results of the partial correlation operations; performing a cumulative product operation on results of the first FFT operation; performing a second FFT operation based on a result of the cumulative product operation; and performing synchronization estimation based on the results of the first FFT operation and a result of the second FFT operation.

公开(公告)号：US11870567B2

公开(公告)日：2024-01-09

申请号：US17409088

申请日：2021-08-23

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jung Bin Kim ,  Dong Hyun Jung

IPC: H04L1/00 ,  H04B7/06

CPC classification number: H04L1/0016 ,  H04B7/0626 ,  H04L1/0026

Abstract: An operation method of a base station in a communication system may comprise: transmitting first indication information to a terminal, the first indication information indicating use of a first CQI table among CQI tables; transmitting a first reference signal to the terminal; and receiving first CSI from the terminal, the first CSI including a first CQI index selected within the first CQI table based on the first reference signal, wherein the CQI tables include the first CQI table and a second CQI table, and a spectral efficiency indicated by at least one CQI index within the first CQI table is identical to a spectral efficiency indicated by at least one CQI index within the second CQI table.