公开(公告)号：US11791881B2

公开(公告)日：2023-10-17

申请号：US17405133

申请日：2021-08-18

Applicant: Electronics and Telecommunications Research Institute

Inventor： Gi Yoon Park ,  Seok Ki Kim ,  Ok Sun Park ,  Eun Jeong Shin ,  Jae Sheung Shin ,  Jin Ho Choi

IPC: H04B7/06 ,  H04W74/08 ,  H04W74/00

CPC classification number: H04B7/0634 ,  H04W74/008 ,  H04W74/0841

Abstract: An operation method of a terminal in a communication system may comprise: receiving, from a base station, basis preamble information and linear combination information; generating a superposed preamble by using the basis preamble information and the linear combination information; transmitting, to the base station, a first message including the generated superposed preamble; and receiving, from the base station, a second message that is a response signal for the first message.

公开(公告)号：US11523415B2

公开(公告)日：2022-12-06

申请号：US17165311

申请日：2021-02-02

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Cheul Soon Kim ,  Gi Yoon Park ,  Seung Kwon Baek ,  Young Jo Ko

IPC: H04W4/00 ,  H04W72/12 ,  H04W72/04

Abstract: A method and an apparatus for uplink transmission in a communication system. An operation method of a terminal includes: receiving, from a base station, first SFI information indicating n flexible symbol(s); receiving, from the base station, second SFI information re-indicating m symbol(s) of the n flexible symbol(s) as uplink (UL) symbol(s); and transmitting an SRS to the base station through the m symbol(s) re-indicated as a UL symbol among the n flexible symbol(s) indicated as a flexible symbol. Therefore, performance of the communication system can be improved.

公开(公告)号：US11223448B2

公开(公告)日：2022-01-11

申请号：US17159543

申请日：2021-01-27

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Ok Sun Park ,  Gi Yoon Park ,  Seok Ki Kim ,  Woo Ram Shin ,  Tae Joong Kim ,  Jae Sheung Shin ,  Young Ha Lee

IPC: H04L1/00

Abstract: An operation method of a first communication node in a communication system includes receiving a signal from a second communication node; demodulating the signal to obtain LLR values; calculating a first codeword based on the LLR values; selecting error patterns from among all error patterns based on Hamming weights; generating second codewords by applying the first codeword to each of the selected error patterns; and determining a codeword having a highest similarity to the first codeword among the second codewords as an optimal codeword.

公开(公告)号：US11153867B2

公开(公告)日：2021-10-19

申请号：US16411306

申请日：2019-05-14

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Young Jo Ko ,  Gi Yoon Park ,  Ok Sun Park ,  Seung Kwon Baek ,  Woo Ram Shin ,  Chan Ho Yoon

IPC: H04W72/04 ,  H04L1/00 ,  H04W72/12 ,  H04L1/18

Abstract: A method and apparatus for transmitting and receiving signal in communication system. A method of a base station includes: configuring frequency spreading sequences each of which corresponds to a transmission starting time point; configuring time spreading sequences each of which corresponds to a terminal; and transmitting information on the frequency spreading sequences and the time spreading sequences to a plurality of terminals, wherein one of the frequency spreading sequences and one of the time spreading sequences are assigned to each of the plurality of terminals.

公开(公告)号：US10110290B2

公开(公告)日：2018-10-23

申请号：US15236158

申请日：2016-08-12

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Cheulsoon Kim ,  Sung-Hyun Moon ,  Gi Yoon Park ,  Wooram Shin

IPC: H04B7/0456 ,  H04B7/06 ,  H04L5/00

Abstract: Disclosed herein is a terminal including: receiving a CSI-RS from a base station, generating CSI feedback information including indicators such as RI, PTI, and BI and a first PMI and a second PMI that are elements of a double codebook, on the basis of the CSI-RS and transmits the CSI feedback information to the base station through an uplink subframe corresponding to predetermined feedback periodicity.

公开(公告)号：US09999074B2

公开(公告)日：2018-06-12

申请号：US15316544

申请日：2016-01-29

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Sung-Hyun Moon ,  Cheulsoon Kim ,  Wooram Shin ,  Gi Yoon Park ,  Young Jo Ko ,  Junyoung Nam

IPC: H04W74/00 ,  H04B7/06 ,  H04L5/00 ,  H04L12/911

CPC classification number: H04W74/006 ,  H04B7/02 ,  H04B7/024 ,  H04B7/0469 ,  H04B7/06 ,  H04B7/0626 ,  H04L5/0007 ,  H04L5/0048 ,  H04L5/005 ,  H04L47/824

Abstract: A method for a base station to configure a channel state information (CSI)-reference signal (RS) is provided. The base station configures a CSI-RS antenna port for a terminal. The base station selects one of at least one port number mapping rule for mapping a port number on the CSI-RS antenna port for the terminal. The base station notifies the terminal of the selected port number mapping rule.

公开(公告)号：US09787387B2

公开(公告)日：2017-10-10

申请号：US15153887

申请日：2016-05-13

Applicant: Electronics and Telecommunications Research Institute

Inventor： Sung-Hyun Moon ,  Cheulsoon Kim ,  Gi Yoon Park ,  Wooram Shin ,  Young Jo Ko ,  Junyoung Nam

IPC: H04L27/00 ,  H04B7/06 ,  H04B7/10

CPC classification number: H04B7/0691 ,  H04B7/0617 ,  H04B7/10

Abstract: The transmitter maps an antenna port to a logical antenna port through a first virtualization. The transmitter maps the logical antenna port to a transceiver unit (TXRU) through a first operation. The transmitter maps the TXRU to a logical TXRU through a second operation. The transmitter maps the logical TXRU to a physical antenna element through a second virtualization.