公开(公告)号：KR1020130116821A

公开(公告)日：2013-10-24

申请号：KR1020130041149

申请日：2013-04-15

Applicant: 한국전자통신연구원

Inventor： 황성현 ,  정병장 ,  고광진 ,  안토니프랭클린에이

IPC: H04W72/04 ,  H04W72/12 ,  H04W4/06 ,  H04W68/04

CPC classification number: H04W4/06 ,  H04W72/048 ,  Y02D70/20 ,  H04W28/00 ,  H04W68/04 ,  H04W72/00 ,  H04W72/04 ,  H04W72/121

Abstract: PURPOSE: A method for managing a backup channel for a recognition wireless communication and an apparatus thereof are provided to prevent a channel conversion which is frequently generated according to an intergroup overlapping which is caused by a location change according to a movement of devices and an appearance of a new device. CONSTITUTION: A grouping unit (610) performs a grouping of devices which are included in one or more cells which are served by a base station. An allocating unit (630) allocates a backup channel for a recognition wireless communication to the groups based on the mobility of the grouped groups and the location information of the groups. A group type of the groups is determined into any one of a moving group which has mobility and a fixed group which does not have mobility according to whether the group has mobility or not. [Reference numerals] (610) Grouping unit; (630) Allocating unit

Abstract translation: 目的：提供一种用于管理用于识别无线通信的备用信道的方法及其装置，以防止根据由设备的移动和外观的位置改变引起的根据由组间重叠而频繁生成的信道转换 的新设备。 构成：分组单元（610）执行包括在由基站服务的一个或多个小区中的设备的分组。 分配单元（630）基于分组组的移动性和组的位置信息，向组分配用于识别无线通信的备用信道。 根据组是否具有移动性，将组类型确定为具有移动性的移动组和不具有移动性的固定组中的任何一个。 （附图标记）（610）分组单元; （630）分配单位

公开(公告)号：KR1020130074139A

公开(公告)日：2013-07-04

申请号：KR1020110142026

申请日：2011-12-26

Applicant: 한국전자통신연구원

Inventor： 박진석 ,  엄중선 ,  고광진 ,  유성진 ,  김상원 ,  정병장

IPC: H04W74/08

CPC classification number: H04W74/0808 ,  H04W72/042 ,  H04W84/12

Abstract: PURPOSE: A contention based channel seizure method on a wireless network using multiple channels is provided to increase channel occupying efficiency in a wireless network environment. CONSTITUTION: Terminals which are unable to transmit a data frame through the first contention obtain occupied channel information through the first contention from the terminal transmitting a data frame (530). The terminals confirm an occupation available channel based on the occupation channel information (540). The terminals perform second contention in the available channel (545). The terminal sets up to match a channel occupation period with the expiration time point. [Reference numerals] (510) First competition performance; (515,555) Competition result victory?; (520,560) Data frame transmission; (525,565) Transmission complete?; (530) Occupation channel information acquisition; (535) Available occupation channel check; (540) Is there occupation channel?; (545) Second competition performance; (550) Channel occupation end; (AA) Start; (BB,DD,GG,II,KK,MM) End; (CC,EE,FF,HH,JJ,LL) No

Abstract translation: 目的：提供使用多个信道的无线网络上基于竞争的信道占用方法，以提高无线网络环境中的信道占用效率。 构成：通过第一次争用不能发送数据帧的终端通过发送数据帧的终端的第一次争用获得占用的信道信息（530）。 终端根据占用频道信息来确认占用可用频道（540）。 终端在可用频道中执行第二次争用（545）。 终端设置为匹配到期时间点的频道占用期。 （附图标记）（510）第一场比赛表演; （515,555）比赛结果胜利？ （520,560）数据帧传输; （525,565）传输完成？ （530）职业频道信息采集; （535）可用的职业通道检查; （540）是否有职业通道？ （545）第二场比赛表现; （550）频道占用结束; （AA）开始; （BB，DD，GG，II，KK，MM）End; （CC，EE，FF，HH，JJ，LL）

公开(公告)号：KR1020120126572A

公开(公告)日：2012-11-21

申请号：KR1020110044463

申请日：2011-05-12

Applicant: 한국전자통신연구원

Inventor： 박재현 ,  정병장 ,  황성현 ,  엄중선 ,  정회윤

IPC: H04B7/04 ,  H04W16/14 ,  H04W88/08

CPC classification number: H04B7/0452 ,  H04B7/0617 ,  H04W16/14 ,  H04B7/043

Abstract: PURPOSE: A cognitive radio base station in a multiuser multiple input/output cognitive radio communication system, a communication method of the cognitive radio base station, and a device thereof are provided to simply obtain a beam formation vector without repetitions by using a closed-shape unit. CONSTITUTION: A cognitive radio base station calculates an orthogonal projection matrix(410). The cognitive radio base station sets an intermediate matrix(420). The cognitive radio base station performs the QR decomposition of the intermediate matrix(430). The cognitive radio base station calculates a right singular matrix based on a sub matrix(440). The cognitive radio base station obtains a beam formation weight vector(450). [Reference numerals] (410) Calculating an orthogonal projection matrix; (420) Setting an intermediate matrix including an effective channel based on the orthogonal projection matrix and noise between cognitive radio terminals; (430) QR decomposing the intermediate matrix; (440) Calculating a right singular matrix based on a sub matrix; (450) Acquiring a beam formation weight vector; (AA) Start; (BB) End

Abstract translation: 目的：提供一种多用户多输入/输出认知无线电通信系统中的认知无线电基站，认知无线电基站的通信方法及其装置，以简单地通过使用闭合形状来获得波束形成向量而不重复 单元。 构成：认知无线电基站计算正交投影矩阵（410）。 认知无线电基站设置中间矩阵（420）。 认知无线电基站执行中间矩阵的QR分解（430）。 认知无线电基站基于子矩阵计算右奇异矩阵（440）。 认知无线电基站获得波束形成权重向量（450）。 （附图标记）（410）计算正交投影矩阵; （420）基于认知无线终端之间的正交投影矩阵和噪声来设置包括有效信道的中间矩阵; （430）QR分解中间矩阵; （440）基于子矩阵计算右奇异矩阵; （450）获取波束形成权重向量; （AA）开始; （BB）结束

公开(公告)号：KR1020120116165A

公开(公告)日：2012-10-22

申请号：KR1020110033751

申请日：2011-04-12

Applicant: 한국전자통신연구원 ,  경희대학교 산학협력단

Inventor： 황성현 ,  정병장 ,  김윤희 ,  왕진수 ,  안태훈

IPC: H04B7/04 ,  H04L27/38

CPC classification number: H04L1/02 ,  H03M13/3927 ,  H04B7/0413

Abstract: PURPOSE: A signal detection apparatus for a MIMO(Multiple Input Multiple Output) system using channel coding and a method thereof are provided to reduce the complexity of a QRD-M detection algorithm. CONSTITUTION: QR analysis of a channel matrix H of a received signal is operated. An LLR(Log-Likelihood Ratio) value is calculated based on a tree structure which uses QR analysis(360). The calculated LLR value is determined as the input of a channel decoder for the channel coding. All of the branches is connected to each other. A candidate list is generated. The LLR value is calculated about each symbol bit based on the generated candidate list. [Reference numerals] (310) Preprocessing and preparation; (320) Linking all nodes from roots; (330) Calculating node length and selecting good node of Ti; (340) Linking formation node corresponding to Mi nodes; (350) Complete?; (360) Calculating LLR of a coding bit; (AA) Start; (BB) No; (CC) Yes; (DD) End

Abstract translation: 目的：提供一种使用信道编码的MIMO（多输入多输出）系统的信号检测装置及其方法，以降低QRD-M检测算法的复杂度。 构成：操作接收信号的信道矩阵H的QR分析。 基于使用QR分析的树结构（360）计算LLR（对数似然比）值。 计算的LLR值被确定为用于信道编码的信道解码器的输入。 所有分支机构都相互连接。 生成候选列表。 基于生成的候选列表计算关于每个符号位的LLR值。 （附图标记）（310）预处理和准备; （320）将所有节点从根链接; （330）计算节点长度并选择Ti的好节点; （340）对应于Mi节点的链接形成节点; （350）完成？ （360）计算编码比特的LLR; （AA）开始; （BB）否; （CC）是; （DD）结束

公开(公告)号：KR1020120063033A

公开(公告)日：2012-06-15

申请号：KR1020100124032

申请日：2010-12-07

Applicant: 한국전자통신연구원

Inventor： 엄중선 ,  황성현 ,  김상원 ,  정병장 ,  김창주

IPC: H04L5/00 ,  H04L27/26 ,  H04L25/02 ,  H04L27/00

CPC classification number: H04L27/2602 ,  H04L5/0023 ,  H04L5/0048 ,  H04L25/0232 ,  H04L27/0006 ,  H04L27/2613 ,  H04L27/2659 ,  H04L27/266 ,  H04L27/2662 ,  H04L27/2675 ,  H04L27/2694

Abstract: PURPOSE: A method and apparatus for transmitting a preamble in a wireless communication system are provided to enhance a channel estimation performance by performing channel estimation for all subcarriers by each antenna. CONSTITUTION: A receiver performs frequency offset estimation and timing synchronization by detecting a short preamble(S410). The receiver confirms a transmission mode by detecting a long preamble(S420). An MIMO(Multiple Input Multiple Output) mode is identified(S430). The receiver confirms a multiple antenna transmission mode by confirming a multiple antenna field within a PHY(Physical Layer Protocol) header(S440). A SISO(Single Input Single Output) mode is identified(S430). The receiver decodes a PSDU(Physical Layer Service Data Unit) based on single antenna transmission(S450).

Abstract translation: 目的：提供一种用于在无线通信系统中发送前导码的方法和装置，以通过对每个天线执行所有子载波的信道估计来增强信道估计性能。 构成：接收机通过检测短前导码来执行频偏估计和定时同步（S410）。 接收机通过检测长前同步码确认发送模式（S420）。 识别MIMO（多输入多输出）模式（S430）。 接收机通过确认PHY（物理层协议）报头中的多个天线字段来确认多天线传输模式（S440）。 识别SISO（单输入单输出）模式（S430）。 接收机基于单天线传输解码PSDU（物理层业务数据单元）（S450）。

公开(公告)号：KR1020120018706A

公开(公告)日：2012-03-05

申请号：KR1020110053392

申请日：2011-06-02

Applicant: 한국전자통신연구원

Inventor： 엄중선 ,  황성현 ,  정회윤 ,  정병장 ,  김창주 ,  고광진

IPC: H04L27/26 ,  H04B7/26

CPC classification number: H04W72/044 ,  H04B7/0689 ,  H04L5/0023 ,  H04L5/0048 ,  H04L5/0091 ,  H04L27/2605 ,  H04L27/2613

Abstract: PURPOSE: A communication method for sharing characteristic information by using a preamble, a method for generating a preamble, and a communication system which is applied with the same are provided to efficiently share the characteristic information of a wireless telecommunication system by minimizing an amount of an information bit. CONSTITUTION: A first repetitive pattern about a real number and a second repetitive pattern about an imaginary number at a preamble are determined in a time domain(810). The first repetitive pattern and the second repetitive pattern depend on subcarrier selection or the subcarrier sequence of selected subcarriers and the allocation of a subcarrier phase value. Two or more subcarriers are selected from a plurality of subcarriers(821). A subcarrier sequence and subcarrier phase value of the preamble, which is mapped in two or more subcarriers, are determined(822,823). A transmitter generates the preamble by mapping the subcarrier sequence and the subcarrier phase value in the selected subcarriers(830). The preamble is transmitted(840).

Abstract translation: 目的：提供一种用于通过使用前导码，用于生成前导码的方法和应用该前导码的通信系统来共享特征信息的通信方法，以通过最小化无线电信系统的数量来有效地共享无线电信系统的特征信息 信息位。 构成：在时域（810）中确定关于在前导码处的虚数的实数和关于虚数的第二重复模式的第一重复模式（810）。 第一重复模式和第二重复模式取决于所选子载波的子载波选择或子载波序列以及子载波相位值的分配。 从多个子载波（821）中选择两个或更多个子载波。 确定映射在两个或多个子载波中的前导码的子载波序列和子载波相位值（822,823）。 发射机通过映射所选子载波中的子载波序列和副载波相位值来产生前导码（830）。 发送前导码（840）。

公开(公告)号：KR1020110031142A

公开(公告)日：2011-03-24

申请号：KR1020100092041

申请日：2010-09-17

Applicant: 한국전자통신연구원

Inventor： 정병장 ,  고영조 ,  서방원 ,  안재영

IPC: H04L27/26

CPC classification number: H04L5/0048 ,  H04L5/0007 ,  H04L27/2607 ,  H04L27/265 ,  H04W72/0413

Abstract: PURPOSE: A method for generating and transmitting a reference signal for uplink modulation in case of clustered DFT spread OFDM transmission is provided to use a complete DR-RS sequence as a cluster unit, thereby reducing interference between cells. CONSTITUTION: One DM-RS sequence is allocated for uplink transmission(S310). A DM-RS sequence allocated according to transmitted information about a cluster length is divided(S320). The divided DM-RS sequence is mapped on a corresponding DM-RS symbol by each cluster. The mapped DM-RS sequence is transmitted(S330).

Abstract translation: 目的：提供一种用于在聚类DFT扩展OFDM传输的情况下生成和发送用于上行链路调制的参考信号的方法，以使用完整的DR-RS序列作为簇单元，从而减少小区之间的干扰。 规定：一个DM-RS序列用于上行传输（S310）。 根据关于簇长度的发送信息分配的DM-RS序列被划分（S320）。 划分的DM-RS序列被映射到每个簇的对应的DM-RS符号上。 发送映射的DM-RS序列（S330）。

公开(公告)号：KR1020100020657A

公开(公告)日：2010-02-23

申请号：KR1020080079339

申请日：2008-08-13

Applicant: 한국전자통신연구원

Inventor： 노태균 ,  정병장 ,  안재영

IPC: H04B7/00 ,  H04B7/005

CPC classification number: H04L27/2647 ,  H04L27/2607

Abstract: PURPOSE: An apparatus and a method for estimating noise variance in wireless multi-carrier communication systems are provided to reduce the complexity of implementation by presuming the noise variance based on the second noise variance through the frequency area signal difference sample. CONSTITUTION: A receiver(101) receives the carrier signal including the reference signal sequence of the multiple transmitting antenna. A first noise variance extracting unit(103) calculates the first noise variance of the time domain about the received carrier signal as described above. The second noise variance extracting unit(109) calculates the second noise variance of the frequency domain about the received carrier signal as described above. The noise variance selecting unit(115) selects the first or the second noise variance. The first noise variance extracting unit comprises a first dispersion calculator obtaining the dispersion of signal difference samples of the first sample extraction unit calculating the signal difference sample of domain in the time-frequency assignment and RX-antenna of the received carrier signal as described above.

Abstract translation: 目的：提供一种用于估计无线多载波通信系统中的噪声方差的装置和方法，用于通过频域区域信号差分采样假设基于第二噪声方差的噪声方差来降低实现的复杂度。 构成：接收机（101）接收包括多发射天线的参考信号序列的载波信号。 如上所述，第一噪声方差提取单元（103）计算关于接收到的载波信号的时域的第一噪声方差。 第二噪声方差提取单元（109）如上所述计算关于所接收的载波信号的频域的第二噪声方差。 噪声方差选择单元（115）选择第一或第二噪声方差。 第一噪声方差提取单元包括第一色散计算器，其获得如上所述计算时频分配中的域的信号差采样和接收的载波信号的RX天线的第一采样提取单元的信号差采样的色散。

公开(公告)号：KR100911208B1

公开(公告)日：2009-08-06

申请号：KR1020070132111

申请日：2007-12-17

Applicant: 한국전자통신연구원 ,  동국대학교 산학협력단

Inventor： 노태균 ,  정병장 ,  정현규 ,  임민중

IPC: H04B7/155 ,  H04L27/26 ,  H04B7/02 ,  H04J1/12

Abstract: ＯＦＤＭＡ 시스템에서 사용자간 시공간 블록 부호화와 순환 지연 다이버시티를 동시 사용하는 기지국 및 단말기가 개시된다. OFDMA 시스템에서 사용자간 시공간 블록 부호화와 순환 지연 다이버시티를 동시 사용하는 기지국은 데이터 전송을 원하는 복수의 사용자 단말 각각에 관한 채널의 주파수 선택적 특성에 따라 상기 사용자 단말 각각에 적합한 송신 다이버시티 방안을 결정하는 다이버시티 결정부, 상기 사용자 단말 각각으로 상기 결정된 송신 다이버시티 방안을 지시하는 다이버시티 지시부 및 상기 사용자 단말로부터 상기 송신 다이버시티 방안에 따라 상기 데이터를 수신하는 데이터 수신부를 포함한다.
다이버시티, 시공간 블록 부호화, 순환 지연 다이버시티, STBC, CDD, MIMO, OFDMA, 상향링크

公开(公告)号：KR1020090062072A

公开(公告)日：2009-06-17

申请号：KR1020070129170

申请日：2007-12-12

Applicant: 한국전자통신연구원 ,  아주대학교산학협력단

Inventor： 노태균 ,  오성근 ,  이민 ,  정병장 ,  정현규

IPC: H04B7/155 ,  H04B7/26 ,  H04B7/14

CPC classification number: H04B7/15592 ,  H04B7/2606 ,  H04B7/15507

Abstract: A relay network and entity capable of successive continuous transmission by using overlapped coding in order to reduce a transmission delay according to the relay use are provided to reduce transmission delay according to the relay use by transmitting data without time division between a base station-relay link and relay-terminal link. A base station(410) reuses a resource allocated to a direct transmission link in the transmission of the base station through an overlapped coding mode. A relay(420) is allocated the resources allocated in the base station and the other separate resources in the transmission of the relay-terminal link. A channel characteristics is maintained in the transmission of the relay-terminal link. The base station-relay link transmits the relay without allocating the resource.

Abstract translation: 提供一种能够通过使用重叠编码进行连续连续传输以减少根据中继使用的传输延迟的中继网络和实体，以根据中继使用通过在基站中继链路 和中继终端链路。 基站（410）通过重叠编码模式重新分配给基站的传输中的直接传输链路的资源。 中继站（420）被分配在基站中分配的资源以及中继终端链路的传输中的其他单独的资源。 在中继终端链路的传输中维持信道特性。 基站中继链路在不分配资源的情况下发送中继。