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71.发明公开다중 사용자 다중 입출력 인지 무선 통신 시스템에서 인지 무선 기지국 및 인지 무선 기지국의 통신 방법 및 장치 无效多用户多输入多输出认证无线网络系统中认知无线基站的认知无线基站和通信方法
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
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
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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
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
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公开(公告)号：KR1020120109455A
公开(公告)日：2012-10-08
申请号：KR1020120105251
申请日：2012-09-21
Applicant: 한국전자통신연구원
Abstract: PURPOSE: A beacon transmission method is provided to improve network transmission efficiency by combining Center beacon method and distribution beacon method. CONSTITUTION: A specific apparatus in one of the two networks(400,410) is selected as a coordinator of a network combining the two networks. The selected coordinator transmits beacon to all apparatuses of the two networks through the beacon period section of a super frame. Each network coordinator of the two networks is a network which is operated as a center beacon method transmitting the beacon using each network coordinator. The specific apparatus is a network coordinator which operates the network using the center beacon method. [Reference numerals] (400) Network A; (410) Network B; (420) Allocated NEIGHBOR; (AA,CC) Data/control; (BB) Neighboring network
Abstract translation: 目的：提供信标传输方法，通过组合中心信标法和分布信标法提高网络传输效率。 构成：选择两个网络之一（400,410）中的特定装置作为组合两个网络的网络的协调器。 所选择的协调器通过超帧的信标周期部分向两个网络的所有设备发送信标。 两个网络的每个网络协调器是作为使用每个网络协调器发送信标的中心信标方法的网络。 具体装置是使用中心信标方法来操作网络的网络协调器。 （附图标记）（400）网络A; （410）网络B; （420）分配邻里; （AA，CC）数据/控制; （BB）相邻网络
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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
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）。
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75.发明公开프리앰블을 이용하여 특성 정보를 공유하는 통신 방법, 상기 프리앰블을 생성하는 방법, 상기 방법들이 적용되는 통신 시스템 有权使用前缀共享通信系统的特征信息的通信方法，生成前缀和通信方法的方法
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
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）。
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Patent Agency Ranking
公开(公告)号：KR1020110047102A
公开(公告)日：2011-05-06
申请号：KR1020100013324
申请日：2010-02-12
Applicant: 한국전자통신연구원
IPC: H04W74/08
Abstract: PURPOSE: A contention-based data communication apparatus and a method thereof are provided to transmit data in consideration of priority by detecting a detection signal transmitted from other communication devices. CONSTITUTION: A search signal generator(130) generates a detection signal having high priority, and a search signal detection unit(140) detects the detection signal received from other communication devices. If radio resources are available, a transmission determination unit(110) transmits a generated search signal. According to the priority between the received detection signal and the transmitted search signal or the existence of the received search signal, the transmission judgment unit judges the transmission of a communication frame.
Abstract translation: 目的：提供一种基于竞争的数据通信装置及其方法，通过检测从其他通信装置发送的检测信号来考虑优先级来发送数据。 构成：搜索信号发生器（130）生成具有高优先级的检测信号，搜索信号检测单元（140）检测从其他通信设备接收的检测信号。 如果无线电资源可用，则发送确定单元（110）发送生成的搜索信号。 根据接收到的检测信号和发送的搜索信号之间的优先级或接收到的搜索信号的存在，发送判断单元判断通信帧的发送。
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公开(公告)号：KR1020100070032A
公开(公告)日：2010-06-25
申请号：KR1020080128621
申请日：2008-12-17
Applicant: 한국전자통신연구원
CPC classification number: H04W48/08 , H04W88/06 , H04B7/18532
Abstract: PURPOSE: A hybrid beaconing method is provided to increase the network transmission efficiency and control efficiency of a WPAN(Wireless Personal Area Network) by selecting a network operating scheme proper to a network condition. CONSTITUTION: An environment monitoring unit(600) collects variable by tracing network environments, and an operating mode determiner(610) determines an efficient network operating mode based on the variable collected by the environment monitoring unit. Based on the results confirmed by the environment monitoring unit, the operating mode determining unit judges the optimal operating scheme of a network. An operation executing unit(620) activates the network through a super frame structure.
Abstract translation: 目的：提供一种混合信标方法，通过选择适合网络条件的网络运行方案，提高WPAN（无线个人区域网络）的网络传输效率和控制效率。 构成：环境监测单元（600）通过跟踪网络环境来收集变量，并且操作模式确定器（610）基于由环境监视单元收集的变量来确定有效的网络操作模式。 基于由环境监测单元确认的结果，操作模式确定单元判断网络的最佳操作方案。 操作执行单元（620）通过超帧结构激活网络。
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公开(公告)号：KR100943179B1
公开(公告)日：2010-02-19
申请号：KR1020080065596
申请日：2008-07-07
Applicant: 한국전자통신연구원 , 성균관대학교산학협력단
Abstract: 본 발명은 IOTA 함수 고유의 간섭을 제거할 수 있는 효과적인 채널 추정을 위한 파일럿 신호 구조와 그 구성 방법 및 데이터 송수신 방법에 관한 것이다.
본 발명은 주파수 및 시간 영역에서 파일럿 부반송파 주변의 인접 부반송파를 서로 상대적으로 배치하여 파일럿 부반송파에 주는 간섭의 양을 상쇄시킬 수 있다.-
公开(公告)号：KR100937875B1
公开(公告)日：2010-01-21
申请号：KR1020070132726
申请日：2007-12-17
Applicant: 한국전자통신연구원
CPC classification number: H04W48/12 , H04W16/14 , H04W36/06 , H04W72/042 , H04W72/0446
Abstract: 인지무선 시스템에서의 기지국의 채널전환장치 및 방법, 단말의 채널전환장치 및 방법이 개시된다. 기지국의 채널전환장치 및 방법은 원래사용자(Incumbent User)가 사용하지 않는 주파수 채널 내에 각 단말과의 데이터 송수신을 위한 슬롯을 할당하여 통신하는 인지무선시스템의 주파수 채널에서 원래사용자의 신호가 인지되면 백업채널로 전환하라는 채널전환메시지를 전송하고, 백업채널을 통해 각 단말에 할당된 주파수 채널 내의 슬롯의 할당정보를 포함하는 비콘프레임을 전송하고, 할당정보를 기초로 백업채널 내에 각 단말과의 데이터 송수신을 위한 슬롯을 할당하여 상기 각 단말과 통신함으로서 네트워크 간의 주파수 자원을 공유하고 효율적으로 사용할 수 있는 기반을 마련하고, 궁극적으로 네트워크 운용의 편의성 및 효율을 극대화할 수 있다.
인지 무선 시스템 (Cognitive radio system), WPAN(Wireless Personal area network), 비콘(Beacon), 초기화(Initialization), 레인징(Ranging), 채널전환(Channel Switching), 신속초기화(Expedite Initialization)-
公开(公告)号：KR1020100005521A
公开(公告)日：2010-01-15
申请号：KR1020080065596
申请日：2008-07-07
Applicant: 한국전자통신연구원 , 성균관대학교산학협력단
CPC classification number: H04L27/2695 , H04L27/262 , H04L27/36 , H04L27/3836
Abstract: PURPOSE: A method for transmitting and receiving data for OFDM/OQAM communication and a method for comprising a pilot are provided to transmit the data without the reducing a data transmission rate by arranging an adjacent subcarrier according to the data information bit. CONSTITUTION: A real number and an imaginary number of complex bit data separated with half-symbol interval are allocated to a data subcarrier. Binary phase shift modulated additional information data is allocated to the data subcarrier. The additional data subcarrier is outputted. A pilot subcarrier, an additional data subcarrier, and an interference cancellation subcarrier are inserted between the outputted data subcarriers. The additional data subcarrier is inserted adjacently to the pilot subcarrier. The interference cancellation subcarrier has the polarity opposite to the additional data subcarrier.
Abstract translation: 目的：提供用于OFDM / OQAM通信的发送和接收数据的方法以及包括导频的方法，用于通过根据数据信息比特布置相邻子载波来传输数据而不降低数据传输速率。 构成：分配有半符号间隔的实数和虚数的复数位数据被分配给数据副载波。 二进制相移调制附加信息数据被分配给数据子载波。 输出附加数据副载波。 在输出的数据子载波之间插入导频副载波，附加数据副载波和干扰消除子载波。 附加数据副载波相邻于导频子载波插入。 干扰消除子载波的极性与附加数据副载波相反。
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