公开(公告)号：US20240430947A1

公开(公告)日：2024-12-26

申请号：US18752623

申请日：2024-06-24

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Chanho YOON ,  Cheulsoon KIM ,  Young Jo KO ,  Yong Sun KIM ,  Kapseok CHANG

IPC: H04W74/0833 ,  H04L27/26

Abstract: Proposed is an apparatus and method for increasing the reach area of a random access preamble and uplink data signals in a wireless communication system. An operation method of a transmitter in a wireless communication system may include a process of generating sequences for generating a physical random preamble channel (PRACH) signal, a process of converting the sequences in a frequency domain, a process of dividing the converted sequences into frequency source blocks (RB), a process of allocating the frequency resource blocks to different spatial layers, and a process of transmitting the PRACH signal on the basis of the frequency resource blocks allocated to the spatial layers.

公开(公告)号：US20240097770A1

公开(公告)日：2024-03-21

申请号：US18091027

申请日：2022-12-29

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jung Ho MYUNG ,  Young-Jo KO ,  Keun Young KIM ,  Kapseok CHANG

IPC: H04B7/08

CPC classification number: H04B7/08

Abstract: An operation method of a first access point (AP) may comprise: transmitting, to a control device of a base station, channel information between the first AP and one or more user equipments (UEs) connected to the base station; receiving allocation information determined by the control device; identifying an entity to decode a uplink (UL) signal of each of the one or more UEs from among a plurality of APs and the control device constituting the base station, based on the allocation information; directly performing a decoding operation on a first UL signal received from a first UE among the one or more UEs, based on the allocation information; and transmitting, to the control device, a first report related to a result of the decoding operation on the first UL signal.

公开(公告)号：US20240080232A1

公开(公告)日：2024-03-07

申请号：US18505888

申请日：2023-11-09

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Kapseok CHANG ,  Wooyong LEE ,  Hyun-Kyu CHUNG

IPC: H04L27/26 ,  H04W56/00

CPC classification number: H04L27/261 ,  H04L27/2613 ,  H04L27/2692 ,  H04W56/0085 ,  H04W72/04

Abstract: Disclosed is a technique related to a method and apparatus for generating a preamble and a data frame for wireless communication, and to a synchronization estimation method using the preamble. According to the technique, a method for generating a frame for wireless communication is disclosed, wherein the method comprises: a step of generating a modified sequence using a first base sequence for synchronization estimation; and a step of allocating the first base sequence and the modified sequence to the frequency domain of a first timeslot to generate a preamble. The modified sequence includes a complex conjugated sequence of the first base sequence or a sequence having a code different from that of the first base sequence.

公开(公告)号：US20220408387A1

公开(公告)日：2022-12-22

申请号：US17841951

申请日：2022-06-16

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Kapseok CHANG ,  Young-Jo KO ,  Cheul Soon KIM ,  Yong Sun KIM ,  Il Gyu KIM

IPC: H04W56/00

Abstract: A timing adjustment method performed by a terminal may include: acquiring downlink synchronization with a base station; obtaining, from the base station, TA granularity-related information; transmitting, to the base station, a preamble and/or an SRS; receiving, from the base station, a TA command generated based on the preamble and/or SRS; determining a timing for uplink frame transmission by interpreting the TA command based on a TA granularity determined based on the TA granularity-related information; and performing the uplink frame transmission based on the determined timing.

公开(公告)号：US20220240203A1

公开(公告)日：2022-07-28

申请号：US17719398

申请日：2022-04-13

Applicant: Electronics and Telecommunications Research Institute

Inventor： Il Gyu KIM ,  Hyeong Geun PARK ,  Young Jo KO ,  Kapseok CHANG ,  Hyo Seok YI ,  Young Hoon KIM ,  Seung Chan BANG

IPC: H04W56/00 ,  H04J11/00 ,  H04L5/00 ,  H04L27/26 ,  H04W36/00

Abstract: A method of searching a cell in a mobile station of a communication system in which a plurality of cells are grouped into a plurality of cell groups, each cell group including at least two cells, includes: detecting a primary synchronization signal and a secondary synchronization signal from a received signal; and identifying a cell based on a combination of the primary synchronization signal and the secondary synchronization signal. The secondary synchronization signal is related to the cell group to which the mobile station belongs and the primary synchronization signal is related to the cell to which the mobile station belongs within the cell group.

公开(公告)号：US20220182271A1

公开(公告)日：2022-06-09

申请号：US17545089

申请日：2021-12-08

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Wooram SHIN ,  Kyeongpyo KIM ,  Young-Jo KO ,  Kapseok CHANG

IPC: H04L27/26 ,  H04L27/01

Abstract: An operation method of a first communication node may include: mapping data symbols to be transmitted to a second communication node of the communication system to resources in a first two-dimensional (2D) domain; pre-processing the data symbols mapped to the resources in the first 2D domain to spread the data symbols on resources in a second 2D domain; mapping the pre-processed data symbols to the resources in the second 2D domain; and performing multi-carrier modulation on the data symbols mapped to the resources in the second 2D domain for each of the resources in the second 2D domain.

公开(公告)号：US20170012762A1

公开(公告)日：2017-01-12

申请号：US15188597

申请日：2016-06-21

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Kapseok CHANG ,  Hyung Sik JU

IPC: H04L5/14 ,  H04B1/40

CPC classification number: H04B1/40 ,  H04B1/525

Abstract: A method and an apparatus for tuning an FIR filter in an in-band full duplex transceiver. The method for tuning an FIR filter includes: converting an input signal of the FIR filter into a first signal that is a baseband signal; converting a signal obtained by subtracting an output signal of the FIR filter from the self-transmitted interference signal into a second signal that is the baseband signal; and calculating attenuation of the FIR filter using the first signal and the second signal.

Abstract translation: 一种用于调谐带内全双工收发器中的FIR滤波器的方法和装置。 调谐FIR滤波器的方法包括：将FIR滤波器的输入信号转换为基带信号的第一信号; 将通过从所述自发干扰信号中减去所述FIR滤波器的输出信号而获得的信号转换为作为所述基带信号的第二信号; 以及使用所述第一信号和所述第二信号计算所述FIR滤波器的衰减。

公开(公告)号：US20160157200A1

公开(公告)日：2016-06-02

申请号：US15014315

申请日：2016-02-03

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Sung-Geun JIN ,  Kapseok CHANG ,  Hyoung Jin KWON ,  Woo Yong LEE ,  Hyun Kyu CHUNG

IPC: H04W56/00 ,  H04W4/00

CPC classification number: H04W56/0065 ,  H04L65/4076 ,  H04W4/80 ,  H04W56/0075 ,  H04W72/0446 ,  H04W74/00 ,  H04W84/12 ,  H04W88/02

Abstract: Disclosed is a method for adjusting a transmission time point of at least one second terminal in a wireless network by a first terminal. In the method for adjusting a transmission time point of a terminal, a transmission time point of the second terminal is set, a first frame including information regarding the transmission time point is transmitted to the second terminal, a first response frame transmitted according to the transmission time point from the second terminal is received, and the transmission time point is adjusted according to an arrival time of the first response frame.

Abstract translation: 公开了一种用于通过第一终端来调整无线网络中的至少一个第二终端的传输时间点的方法。 在调整终端的发送时刻的方法中，设定第二终端的发送时刻，将与发送时刻有关的信息的第一帧发送到第二终端，根据发送发送的第一应答帧 接收来自第二终端的时间点，并且根据第一响应帧的到达时间来调整发送时间点。

公开(公告)号：US20160128044A9

公开(公告)日：2016-05-05

申请号：US14705706

申请日：2015-05-06

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Kapseok CHANG ,  Byung-Jae KWAK

IPC: H04W72/04 ,  H04W56/00

CPC classification number: H04W72/0406 ,  H04L29/08306 ,  H04L67/104 ,  H04W4/70 ,  H04W4/80 ,  H04W28/0215 ,  H04W56/00 ,  H04W56/001 ,  H04W84/12

Abstract: When a transmitter transmits a first Timing Offset Indication iDentifier (TOID) of a plurality of TOIDs representing timing offset of a frame, the transmitter determines a first codeword corresponding to the first TOID of a plurality of codewords representing a subcarrier. The transmitter allocates a busy tone to a first subcarrier that the first codeword represents. The transmitter transmits the busy tone.

公开(公告)号：US20160112078A1

公开(公告)日：2016-04-21

申请号：US14885798

申请日：2015-10-16

Applicant: Electronics and Telecommunications Research Institute

Inventor： Hyung Sik JU ,  Kapseok CHANG ,  Seon-Ae KIM

IPC: H04B1/10 ,  H04B1/18 ,  H02J7/02 ,  H04B1/525

CPC classification number: H02J7/025 ,  H02J50/20 ,  H04B1/525

Abstract: Disclosed herein are a terminal and a power charging method thereof. The terminal may include: an information transmitter generating a first signal corresponding to an uplink signal transmitted to a base station; and a power harvester receiving a self-interference signal generated by the first signal and charging power using the self-interference signal.

Abstract translation: 这里公开了一种终端及其充电方法。 终端可以包括：信息发射机，生成对应于发送到基站的上行链路信号的第一信号; 以及功率收集器，其接收由第一信号产生的自干扰信号和使用自干扰信号的充电功率。