公开(公告)号：US20250062944A1

公开(公告)日：2025-02-20

申请号：US18721304

申请日：2022-12-21

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Kapseok CHANG ,  Byung Jae KWAK ,  Won Cheol CHO ,  Young-Jo KO ,  Yong Sun KIM

IPC: H04L27/26 ,  H04J13/00

Abstract: A method by which a first communication node operates in a communication system comprises the steps of: generating a first sequence and a second sequence; generating a first signal sequence on the basis of the first sequence and the second sequence; and transmitting a first signal generated by modulating the first signal sequence, wherein even-numbered elements and odd numbered elements of the first signal sequence are classified into a first element group and a second element group, respectively, and any one of the first sequence and the second sequence can be mapped in ascending order in the first element group, and the other one thereof can be mapped in descending order in the second element group.

公开(公告)号：US20140233411A1

公开(公告)日：2014-08-21

申请号：US14180569

申请日：2014-02-14

Applicant: Electronics and Telecommunications Research Institute

Inventor： Sung Geun JIN ,  Byung Jae KWAK ,  Jin Kyeong KIM ,  Sung Cheol CHANG ,  Seung Chan BANG

IPC: H04W74/08

CPC classification number: H04L1/00 ,  H04L1/1607 ,  H04L1/201 ,  H04W74/00

Abstract: A method and an apparatus for detecting a collision in a wireless multi-access channel are disclosed. The method of detecting the collision in the wireless multi-access according to an exemplary embodiment includes generating a request-to-send (RTS) message by a transmission terminal, transmitting the RTS message to a reception terminal, and receiving a response message from the reception terminal and determining whether a collision occurs based on a number of pieces of tone information included in the response message.

Abstract translation: 公开了一种用于检测无线多址信道中的冲突的方法和装置。 根据示例性实施例的检测无线多址中的冲突的方法包括：生成发送终端的请求发送（RTS）消息，向接收终端发送RTS消息，以及从所述接收终端接收响应消息 接收终端，基于响应消息中包含的多个音调信息来确定是否发生冲突。

公开(公告)号：US20250158856A1

公开(公告)日：2025-05-15

申请号：US18720365

申请日：2022-12-16

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Kapseok CHANG ,  Won Cheol CHO ,  Byung Jae KWAK ,  Young-Jo KO ,  Yong Sun KIM

IPC: H04L27/20

Abstract: A method for operating a first communication node, in one embodiment of a communication system, comprises the steps of: generating a first binary sequence and a second binary sequence; generating, on the basis of the first and second binary sequences and a BPSK operation, a first intermediate sequence having 2N elements; generating, on the basis of an operation on the elements of the first intermediate sequence, a first signal sequence including N elements; mapping, to N subcarriers, first modulation symbols generated by modulating the first signal sequence; and transmitting a first signal including the mapped first modulation symbols, wherein the first and second binary sequences are generated on the basis of generator polynomials of which the maximum order is p+1, wherein p is a natural number and N can be a natural number having a value of (2p−1).

公开(公告)号：US20140112153A1

公开(公告)日：2014-04-24

申请号：US14061953

申请日：2013-10-24

Applicant: Electronics and Telecommunications Research Institute

Inventor： Sung Geun JIN ,  Byung Jae KWAK ,  Jin Kyeong KIM ,  Sung Cheol CHANG ,  Seung Chan BANG

IPC: H04L12/26

CPC classification number: H04W74/085 ,  H04L47/14 ,  H04L47/27

Abstract: Disclosed is a method and apparatus for managing a contention window based on detection of a transmission error, the method including: recognizing a transmission failure of data in the case of transmitting data using a contention-based wireless channel access method; verifying whether the transmission failure of data occurs due to a channel error or a collision by a contention between terminals; and determining a value of a contention window set in association with data transmission based on the verification result.

Abstract translation: 公开了一种基于检测传输错误来管理竞争窗口的方法和装置，所述方法包括：在使用基于争用的无线信道接入方法发送数据的情况下识别数据的传输失败; 验证数据的传输失败是由于通道错误还是由终端之间的争用引起的冲突; 以及基于验证结果确定与数据传输相关联的竞争窗口的值。

公开(公告)号：US20230319738A1

公开(公告)日：2023-10-05

申请号：US18129206

申请日：2023-03-31

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Byung Jae KWAK ,  Kapseok CHANG ,  Won Cheol CHO ,  Young-Jo KO ,  Yong Sun KIM

IPC: H04W56/00

CPC classification number: H04W56/00

Abstract: An operation method of a first communication apparatus may include: identifying one or more synchronization signal components constituting a synchronization signal component set; generating a plurality of synchronization signal sections based on the one or more synchronization signal components and a plurality of primary coefficients corresponding to the one or more synchronization signal components; generating one or more synchronization signal parts based on a combination of the plurality of synchronization signal sections; generating one or more synchronization signals based on a combination of the one or more synchronization signal parts in time domain; and transmitting the generated one or more synchronization signals.

公开(公告)号：US20150031403A1

公开(公告)日：2015-01-29

申请号：US14334311

申请日：2014-07-17

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Byung Jae KWAK

IPC: H04W8/00 ,  H04W76/02

CPC classification number: H04W8/005 ,  G01S11/16 ,  H04W64/006 ,  H04W76/14

Abstract: A method and apparatus related to spatial filtering to select target terminals only located at a predetermined distance among a plurality of target terminals, using a propagation delay between an electromagnetic signal and an acoustic signal are provided. A user terminal transmits the acoustic signal to neighboring terminals to select terminals of which distances from the user terminal correspond to a distance from the user terminal to a target terminal among neighboring terminals. The electromagnetic signal is transmitted to the neighboring terminals in a predetermined transmission delay. Response signals are received from neighboring terminals of which distances from the user terminal are within a predetermined range, among the neighboring terminals that have received the acoustic signal and the electromagnetic signal. The neighboring terminals receive the acoustic signal from the user terminal, and receive the electromagnetic signal transmitted in the transmission delay from the user terminal.

Abstract translation: 提供了一种与空间滤波相关的方法和装置，其使用电磁信号和声信号之间的传播延迟来选择仅位于多个目标终端之间的预定距离处的目标终端。 用户终端将声信号发送到相邻终端，以选择与用户终端的距离对应于相邻终端之间从用户终端到目标终端的距离的终端。 电磁信号以预定的传输延迟发送到相邻终端。 在已经接收到声信号和电磁信号的相邻终端中，从与用户终端的距离处于预定范围内的相邻终端接收响应信号。 相邻的终端从用户终端接收声信号，并接收从用户终端以传输延迟发送的电磁信号。

公开(公告)号：US20130196652A1

公开(公告)日：2013-08-01

申请号：US13752643

申请日：2013-01-29

Applicant: Electronics and Telecommunications Research Institute

Inventor： Tae Joong KIM ,  Young Hoon KIM ,  Byung Jae KWAK ,  Pyeong Jung SONG ,  Seung Chan BANG

IPC: H04W28/02

CPC classification number: H04W28/0215 ,  H04W56/002

Abstract: Provided is a method and apparatus for setting a communication target in a wireless communication system. A method of setting, by a setting device, a communication target in a wireless communication system may include: obtaining a synchronization and a characteristic of a target device by receiving a signal transmitted from the target device during a predetermined period of time; transmitting setting information to the target device based on the synchronization and the characteristic of the target device; and completing setting of the communication target by receiving setting response signal from the target device.

Abstract translation: 提供了一种用于在无线通信系统中设置通信目标的方法和装置。 通过设定装置在无线通信系统中设定通信目标的方法可以包括：通过在预定时间段内接收从目标设备发送的信号来获得目标设备的同步和特性; 基于目标设备的同步和特性向设备发送设置信息; 以及通过从目标设备接收设置响应信号来完成通信目标的设置。