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公开(公告)号：KR101509728B1
公开(公告)日：2015-04-06
申请号：KR1020090044070
申请日：2009-05-20
CPC classification number: H04L25/067 , H04L1/1812 , H04L27/0008 , H04L27/2604 , H04L27/3488
Abstract: 심볼매핑방법에서, 전송데이터를부호화하여정보비트와리던던시비트를생성한다. 초기전송시에정보비트와리던던시비트를제1 매핑방식에따라심볼에매핑하고, 재전송시에정보비트와리던던시비트를제1 매핑방식과다른제2 매핑방식에따라심볼에매핑한다.
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公开(公告)号：KR1020130051350A
公开(公告)日：2013-05-20
申请号：KR1020110116644
申请日：2011-11-09
Applicant: 한국전자통신연구원
CPC classification number: H04W56/001 , H04L7/0008 , H04W84/18
Abstract: PURPOSE: A mesh node synchronization method in a wireless mesh system is provided to modulate a preamble of a neighbor node and broadcasting information. CONSTITUTION: An automatic gain controller transmits a network setup signal received from a neighbor node to a PHY(PHYsical Layer)(S531b). The PHY synchronizes time or frequency by using a preamble of the network setting signal(S532b). The PHY transmits the location information of a starting point of a super frame of the network setting signal to a DSP(Digital Signal Processor). The DSP synchronizes the clock of a mesh node through the location information. [Reference numerals] (AA) Automatic gain control unit; (BB) Power on; (DD) Network setting signal searching time; (EE) Location information transfer of network setting signal/super frame starting point; (S520,CC) Initial network setting mode request; (S531b) Network setting signal/PPA_en signal transfer; (S532b) Time/frequency synchronization network setting signal decoding; (S533b) Super frame starting point correction; (S540,FF) Normal network setting mode request; (S550b) Network entrance
Abstract translation: 目的：提供无线网状系统中的网格节点同步方法来调制邻居节点的前同步码和广播信息。 构成：自动增益控制器将从邻居节点接收的网络建立信号发送到PHY（PHY层）（S531b）。 PHY通过使用网络设置信号的前同步码来同步时间或频率（S532b）。 PHY将网络设置信号的超帧的起点的位置信息发送到DSP（数字信号处理器）。 DSP通过位置信息同步网状节点的时钟。 （附图标记）（AA）自动增益控制单元; （BB）开机; （DD）网络设置信号搜索时间; （EE）网络设置信号/超帧起点的位置信息传输; （S520，CC）初始网络设置模式请求; （S531b）网络设定信号/ PPA_en信号传送; （S532b）时间/频率同步网络设置信号解码; （S533b）超帧起点校正; （S540，FF）正常网络设置模式请求; （S550b）网络入口
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公开(公告)号：KR1020130048084A
公开(公告)日：2013-05-09
申请号：KR1020110113017
申请日：2011-11-01
Applicant: 한국전자통신연구원
CPC classification number: H04W72/0406 , H04J11/00 , H04W84/18
Abstract: PURPOSE: A resource assignment device of a wireless communication system and a method thereof are provided to prevent the collision between time shaft resources and frequency shaft resources in a wireless communication system based on an OFDMA(Orthogonal Frequency Division Multiple Access). CONSTITUTION: A reception unit(720) receives a control message from a hop node of a communication node. An assignment control unit(730) collects the resource assignment information of two hop nodes and one hop node through the control message. The assignment control unit selects assignable transmission resources and assignable reception resources using the resource assignment information of the nodes. The assignment control unit individually assigns the transmission resources and reception resources to an assignable reception resource and the assignable transmission resource. [Reference numerals] (710) Transmission unit; (720) Reception unit; (730) Assignment control unit
Abstract translation: 目的：提供无线通信系统的资源分配装置及其方法，以防止基于OFDMA（正交频分多址）的无线通信系统中的时间轴资源与频率轴资源之间的碰撞。 构成：接收单元（720）从通信节点的跳跃节点接收控制消息。 分配控制单元（730）通过控制消息收集两跳节点和一跳节点的资源分配信息。 分配控制单元使用节点的资源分配信息来选择可分配的发送资源和可分配的接收资源。 分配控制单元将发送资源和接收资源分别分配给可分配的接收资源和可分配的发送资源。 （附图标记）（710）传输单元; （720）接待单位; （730）分配控制单元
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公开(公告)号：KR101206434B1
公开(公告)日：2012-11-29
申请号：KR1020090016799
申请日：2009-02-27
Applicant: 한국전자통신연구원 , 연세대학교 산학협력단
Abstract: 본 발명은 저밀도 패리티 검사 부호를 위한 동적 스케줄링 기법을 이용한 복호 방법 및 그 장치에 관한 것이다.
본 발명에서는 저밀도 패리티 검사 부호의 복호를 순차적으로 수행하며, 특히 변수 노드에서 체크 노드로 전달되는 메시지의 업데이트 전후 값의 차이가 큰 순서대로 해당 메시지들을 스케줄링 한다. 그 결과 기존의 동적 스케줄링 기법에 비해 탁월한 성능을 보이며, 불필요한 연산과 재정렬 과정이 삭제되어 낮은 복잡도로 복호 방법을 구현할 수 있다.
저밀도패리티검사, LDPC, 복호,-
公开(公告)号：KR1020120054138A
公开(公告)日：2012-05-30
申请号：KR1020100115363
申请日：2010-11-19
Applicant: 한국전자통신연구원
Abstract: PURPOSE: A winner node selecting method in an OFDM(Orthogonal Frequency Division Multiplexing) based wireless mesh system is provided to effectively select winner nodes by establishing a parameter related to an algorithm for minimizing collision between competition nodes. CONSTITUTION: A node collects parameters which are necessary to select mesh data for the nodes of a second hole section. The node uses the nodes of the second hole section as competition nodes. The node determines a winner node for each sub-channel. When the winner node is determined for a first sub-channel of the sub-channels, the node excludes the nodes of a first hole section from the competition node.
Abstract translation: 目的：提供一种基于OFDM（正交频分复用）的无线网状系统中的优胜者节点选择方法，通过建立与竞争节点之间的冲突最小化的算法相关的参数来有效地选择胜者节点。 构成：节点收集为第二个孔节点的节点选择网格数据所必需的参数。 节点使用第二个孔节点的节点作为竞争节点。 节点确定每个子通道的胜利者节点。 当针对子信道的第一子信道确定获胜者节点时，节点从竞争节点排除第一个孔节点的节点。
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Patent Agency Ranking
公开(公告)号：KR1020120012944A
公开(公告)日：2012-02-13
申请号：KR1020100133118
申请日：2010-12-23
Applicant: 한국전자통신연구원
CPC classification number: H04L27/2602 , H04W72/1263 , H04W74/0833 , H04W84/18 , H04L1/0026
Abstract: PURPOSE: A method and an apparatus for using a frame structure for a wireless mesh network are provided to transmit a network configuration information message and scheduling information for acquisition of resources with high opportunity. CONSTITUTION: A super-frame(SU,100) is the largest unit frame used for a wireless mesh network. Nodes within an OFDMA based wireless mesh network implement communication using the super-frame for data transmission and dispersed connection control. The super-frame comprises one or more frames, one of which is a network control frame(NCF) used by the nodes and the others of which are scheduling and data frames(SDF). The frame is composed of one or more subframes(SF).
Abstract translation: 目的：提供一种使用无线网状网络的帧结构的方法和装置，用于以高机会发送用于获取资源的网络配置信息消息和调度信息。 构成：超帧（SU，100）是用于无线网状网络的最大单位帧。 基于OFDMA的无线网状网络内的节点利用超帧进行数据传输和分散连接控制的通信。 超帧包括一个或多个帧，其中之一是由节点使用的网络控制帧（NCF），其余的是调度和数据帧（SDF）。 帧由一个或多个子帧（SF）组成。
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公开(公告)号：KR1020110102232A
公开(公告)日：2011-09-16
申请号：KR1020110020575
申请日：2011-03-08
Applicant: 한국전자통신연구원
CPC classification number: H04B7/086 , H04B7/0456 , H04B7/0665
Abstract: 이동국의 빔 제어 방법이 개시된다. 이동국은 서빙 기지국으로부터 이득 최대화 전처리 행렬 인덱스, 인접 기지국과 관련된 간섭 최소화 전처리 행렬 인덱스, 전처리 행렬 인덱스 조합 비율, 인접 기지국의 식별자를 수신하고, 식별자에 해당하는 인접 기지국으로부터의 채널 정보 행렬과 서빙 기지국으로부터의 채널 정보 행렬을 구한다. 이동국은 간섭 최소화 전처리 행렬 인덱스에 해당하는 제1 코드북을 인접 기지국으로부터의 채널 정보 행렬을 이용하여 변형하고, 이득 최대화 전처리 행렬 인덱스에 해당하는 제2 코드북을 서빙 기지국으로부터의 채널 정보 행렬을 이용하여 변형한다. 이동국은 변형된 제1 코드북, 변형된 제2 코드북, 및 전처리 행렬 인덱스 조합 비율을 이용하여 전처리 행렬을 구하여 빔을 제어한다.
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公开(公告)号：KR1020100026978A
公开(公告)日：2010-03-10
申请号：KR1020090071799
申请日：2009-08-04
Applicant: 한국전자통신연구원 , 고려대학교 산학협력단
CPC classification number: H04L1/1812 , H04B7/0639 , H04B7/0652 , H04L1/06 , H04B7/0482
Abstract: PURPOSE: A device for generating a codebook, a method for generating a codebook and a method for transmitting data are provided to select an optimal pre-processing matrix, thereby obtaining transmission efficiency. CONSTITUTION: A frequency determining unit(110) decides a frequency which makes a transmission codebook to have an optimal feature. A pre-processing matrix generating unit(120) generates a pre-processing matrix based on the frequency. A codebook generating unit(140) generates a retransmission codebook used in retransmission based on the pre-processing matrix. The codebook generating unit generates the transmission codebook based on the retransmission codebook. When the minimum distance of the transmission codebook becomes maximum, the transmission codebook has the optimal feature.
Abstract translation: 目的：提供一种用于生成码本的装置，生成码本的方法和发送数据的方法，以选择最佳的预处理矩阵，从而获得传输效率。 构成：频率确定单元（110）决定使发送码本具有最佳特征的频率。 预处理矩阵生成单元（120）基于该频率生成预处理矩阵。 码本生成单元（140）基于预处理矩阵生成在重发中使用的重传码本。 码本生成单元基于重发码本生成发送码本。 当传输码本的最小距离变得最大时，传输码本具有最佳特征。
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公开(公告)号：KR1020100002152A
公开(公告)日：2010-01-06
申请号：KR1020090056119
申请日：2009-06-23
CPC classification number: H04L5/0048 , H04J11/005 , H04L5/0007 , H04L25/0202
Abstract: PURPOSE: A signal transmitting method and a signal receiving method are provided to estimate the channel of a cell to which a terminal belongs and the channel of a signal coming from a neighbor cell, thereby reducing the interference of the neighbor cell. CONSTITUTION: In order to be orthogonal to the pilot pattern of a first user terminal, a second user terminal changes its own pilot pattern(S522). A center BS(Base Station) receives a transmitting signal from the first user terminal in a nth frame(S524). The center BS estimates a channel with the first and second terminals(S528). A neighboring BS detects the transmitting signal of the second user terminal with a channel estimation value(S530). The center BS eliminates an interferential signal with the channel estimation value and transmitting signal of the second user terminal(S536).
Abstract translation: 目的：提供信号发送方法和信号接收方法，以估计终端所属的小区的信道和来自相邻小区的信号的信道，从而减少相邻小区的干扰。 构成：为了与第一用户终端的导频模式正交，第二用户终端改变其自己的导频模式（S522）。 中心BS（基站）在第n帧从第一用户终端接收发送信号（S524）。 中心BS估计具有第一和第二终端的信道（S528）。 相邻BS使用信道估计值来检测第二用户终端的发送信号（S530）。 中心BS消除了具有第二用户终端的信道估计值和发送信号的干扰信号（S536）。
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