公开(公告)号：US20150263877A1

公开(公告)日：2015-09-17

申请号：US14645094

申请日：2015-03-11

Applicant: Electronics and Telecommunications Research Institute

Inventor： Kapseok CHANG ,  Byung-Jae KWAK

IPC: H04L27/26 ,  H04W56/00 ,  H04W28/04 ,  H04L5/00

CPC classification number: H04W56/003 ,  H04L5/0007 ,  H04L27/2607 ,  H04L27/2613 ,  H04L27/2692

Abstract: A method and apparatus for transmitting/receiving a preamble is provided. The apparatus includes an STF and an LTF including a plurality of repetition patterns, a CDF for collision sensing among messages, a CEF for channel estimation, and a CSF for carrier sensing, wherein the time length of the STF equals the time length of two orthogonal frequency division multiplexing (OFDM) symbols.

Abstract translation: 提供了一种用于发送/接收前导码的方法和装置。 该装置包括STF和包括多个重复模式的LTF，用于消息之间的冲突感测的CDF，用于信道估计的CEF和用于载波感测的CSF，其中STF的时间长度等于两个正交的时间长度 频分复用（OFDM）符号。

公开(公告)号：US20150223170A1

公开(公告)日：2015-08-06

申请号：US14616480

申请日：2015-02-06

Applicant: Electronics and Telecommunications Research Institute

Inventor： Kapseok CHANG ,  Byung-Jae KWAK

IPC: H04W52/02 ,  H04W48/16 ,  H04W56/00

CPC classification number: H04W52/0216 ,  Y02D70/142

Abstract: A method and apparatus for recognition of information contained in a frame are provided. The method includes performing synchronization over a synchronization period of the frame, and recognizing, through an indication block of a listen period included in the frame, whether information exists in the remaining part of the listen period after the indication block.

Abstract translation: 提供了一种用于识别包含在帧中的信息的方法和装置。 该方法包括在帧的同步周期执行同步，并且通过包括在帧中的监听周期的指示块来识别在指示块之后的监听周期的剩余部分中是否存在信息。

公开(公告)号：US20130203448A1

公开(公告)日：2013-08-08

申请号：US13760475

申请日：2013-02-06

Applicant: Electronics and Telecommunications Research Institute ,  Korea Advanced Institute of Science and Technology

Inventor： Joonhyuk KANG ,  Byung-Jae KWAK ,  Young-Hoon KIM ,  Seung-Chan BANG ,  Eunhye PARK

IPC: H04W4/02

CPC classification number: H04W4/025

Abstract: A terminal and method for recognizing a communication target within a visible range. The method of a terminal to recognize a communication target includes obtaining location information of a communication target whose identification information is unknown within a visible range of a terminal user; and recognizing a relative location of the communication target with respect to the terminal based on the obtained location information and displaying the recognized relative location of the communication target.

Abstract translation: 一种用于识别可见范围内的通信目标的终端和方法。 终端识别通信目标的方法包括：在终端用户的可视范围内获取识别信息未知的通信对象的位置信息; 以及基于所获得的位置信息识别所述通信对象相对于所述终端的相对位置，并且显示所识别的所述通信对象的相对位置。

公开(公告)号：US20160112101A1

公开(公告)日：2016-04-21

申请号：US14865260

申请日：2015-09-25

Applicant: Electronics and Telecommunications Research Institute

Inventor： Seon-Ae KIM ,  Young-Hoon KIM ,  Byung-Jae KWAK ,  Soo Chang KIM ,  Seung Chan BANG ,  Moon-Sik LEE

IPC: H04B7/04 ,  H04W72/04

CPC classification number: H04B7/0456 ,  H04B7/0617 ,  H04W72/046

Abstract: An apparatus for spatial filtering receives a signal transmitted from a first terminal and detects a synchronization start point in time from a transmission frame included in the signal. The apparatus for spatial filtering demodulates a user-defined sequence included in the transmission frame and the at least one SRJBF sequence when the synchronization start point in time is detected, and then estimates a relative angle based on the demodulated user-defined sequence and SRJBF sequence.

Abstract translation: 用于空间滤波的装置接收从第一终端发送的信号，并且从包括在信号中的发送帧检测到时间上的同步起始点。 当检测到同步起始时间点时，用于空间滤波的装置解调包括在传输帧中的用户定义序列和至少一个SRJBF序列，然后基于解调的用户定义序列和SRJBF序列来估计相对角度 。

公开(公告)号：US20160081047A1

公开(公告)日：2016-03-17

申请号：US14852375

申请日：2015-09-11

Applicant: Electronics and Telecommunications Research Institute

Inventor： Byung-Jae KWAK ,  Kapseok CHANG ,  June-Koo RHEE ,  Junhyuk KIM ,  Kyounghye KIM

IPC: H04W56/00 ,  H04W72/04 ,  H04L12/807

CPC classification number: H04W56/001 ,  H04L47/27 ,  H04W72/00

Abstract: Disclosed is a synchronization method in a distributed wireless communication system and a terminal supporting the same. In a synchronization method, a terminal splits a synchronization period into a plurality of backoff slots and randomly selects a backoff counter using the contention window. Furthermore, the terminal checks whether a channel is idle during at least one of the plurality of backoff slots and changes the backoff counter based on a result of the check.

Abstract translation: 公开了一种分布式无线通信系统中的同步方法和支持该方法的终端。 在同步方法中，终端将同步周期分割成多个退避时隙，并使用竞争窗口随机选择退避计数器。 此外，终端在多个退避时隙中的至少一个期间检查信道是否空闲，并且基于检查的结果来改变退避计数器。

公开(公告)号：US20150264658A1

公开(公告)日：2015-09-17

申请号：US14656169

申请日：2015-03-12

Applicant: Electronics and Telecommunications Research Institute

Inventor： Byung-Jae KWAK ,  Kapseok CHANG ,  June-Koo RHEE ,  Junhyuk KIM

IPC: H04W56/00 ,  H04W52/02 ,  H04W72/04

CPC classification number: H04W56/0055 ,  H04W52/0209 ,  Y02D70/00

Abstract: Disclosed herein are a method of performing synchronization in a distributed wireless communication system, and a terminal supporting the same. A distributed wireless communication system includes a plurality of networks. Time resources of each of a plurality of networks are divided into a synchronization slot, a discovery slot, a peering slot, and a data slot. A first terminal belonging to a first network determines whether a synchronization signal is received from a terminal belonging to a second network in the data slot of the first network. The first terminal detects whether it has met the second network that is out of synchronization with the first network if the synchronization signal is determined to have been received.

Abstract translation: 这里公开了一种在分布式无线通信系统中执行同步的方法，以及支持该同步的终端。 分布式无线通信系统包括多个网络。 多个网络中的每一个的时间资源被划分为同步时隙，发现时隙，对等时隙和数据时隙。 属于第一网络的第一终端确定是否从属于第一网络的数据时隙中的第二网络的终端接收到同步信号。 如果确定已经接收到同步信号，则第一终端检测是否满足与第一网络不同步的第二网络。

公开(公告)号：US20130099973A1

公开(公告)日：2013-04-25

申请号：US13657073

申请日：2012-10-22

Applicant: Electronics and Telecommunications Research Institute

Inventor： Byung-Jae KWAK

IPC: H01Q3/38

CPC classification number: H01Q3/26 ,  H04B7/0617 ,  H04B7/086

Abstract: A random jitter beamforming method for reducing the influence of a side lobe to decrease a beam width, and a transmitter and a receiver using the same are provided. The random jitter beamforming method includes dividing a series of binary sequences to generate a plurality of bit groups, designating a beam pattern, corresponding to each of the bit groups, from a set of two or more beam patterns having the same gain and phase in a target direction, and forming a beam with the corresponding beam pattern, for each of the bit groups.

Abstract translation: 提供了一种用于减小旁瓣以减小波束宽度的影响的随机抖动波束成形方法，以及使用该波束成形方法的发射机和接收机。 随机抖动波束成形方法包括：分割一系列二进制序列以产生多个比特组，从一组具有相同增益和相位的两个或多个波束图案中选择一个对应于每个比特组的波束图案 目标方向，并且为每个位组形成具有相应波束图案的波束。