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公开(公告)号：KR1020140060232A
公开(公告)日：2014-05-19
申请号：KR1020130133147
申请日：2013-11-04
Applicant: 한국전자통신연구원
IPC: H04B7/26
CPC classification number: H04B7/2603
Abstract: Provided is a method that a first terminal communicating with a base station directly communicates with a second terminal. In accordance with an embodiment of the present invention, the first terminal determines a first time point at which the first terminal transmits a first signal to the base station or receives the first signal from the base station. The first terminal determines a second time point at which the first terminal transmits a second signal for searching a terminal to the second terminal. The first terminal changes one among the first time point and the second time point when the first time point and the second time point are overlapped.
Abstract translation: 提供了一种与基站通信的第一终端直接与第二终端进行通信的方法。 根据本发明的实施例，第一终端确定第一终端向基站发送第一信号的第一时间点或从基站接收第一信号。 第一终端确定第一终端向第二终端发送用于搜索终端的第二信号的第二时间点。 当第一时间点和第二时间点重叠时，第一终端在第一时间点和第二时间点之间改变一个。
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公开(公告)号：KR1020140059929A
公开(公告)日：2014-05-19
申请号：KR1020120126312
申请日：2012-11-08
Applicant: 한국전자통신연구원
CPC classification number: H04L25/0204
Abstract: In a method of estimating a channel in a multicarrier system, a channel path is estimated if a signal is received through a multi-path channel. A channel is estimated based on the signal received from the estimated channel path. A compressive sensing-based channel estimate for repeatedly performing such path estimate and channel estimate is carried out.
Abstract translation: 在估计多载波系统中的信道的方法中，如果通过多径信道接收到信号，则估计信道路径。 基于从估计的信道路径接收的信号来估计信道。 执行用于重复执行这样的路径估计和信道估计的基于压缩感测的信道估计。
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公开(公告)号：KR101358990B1
公开(公告)日：2014-02-17
申请号：KR1020070011016
申请日：2007-02-02
CPC classification number: H04L27/2602 , H04J13/00 , H04J13/0003 , H04L1/0073 , H04L5/0053 , H04L5/006
Abstract: 기지국으로 피드백 정보를 전송하는 장치가 개시된다. 피드백 정보 전송 장치는 채널 할당 정보를 수신하여, 피드백 정보에 해당하는 복수의 페이로드를 생성하고, 복수의 페이로드를 복수의 클래스 별로 다중화하여 복수의 다중화 페이로드를 생성한다. 이후 복수의 다중화 페이로드를 코드 다중화하여 코드분할 다중화 심볼을 생성하고, 코드분할 다중화 심볼에 채널 코드를 적용하여 무선 자원을 통해 기지국으로 전송한다. 이를 통해 채널 조건에 따라 적응적인 피드백 채널을 구성하여 피드백 채널을 위한 무선 자원을 효율적으로 이용한다.
피드백, 채널, 클래스, 다중화, DFT-
公开(公告)号：KR1020130109045A
公开(公告)日：2013-10-07
申请号：KR1020130030015
申请日：2013-03-20
Applicant: 한국전자통신연구원
IPC: H04W56/00
CPC classification number: H04W56/001 , H04W56/0035
Abstract: PURPOSE: A frequency synchronization method in a distributed network is provided to synchronize a carrier frequency of a node which enters a distributed network with a carrier frequency of the network which the node has entered by adjusting the carrier frequency of the node. CONSTITUTION: Preambles are received from a plurality of nodes which are adjacent to a node (S301). A carrier frequency offset of each node is estimated from the preambles (S302). The average of the estimated offsets is calculated (S304). An adjustment value of the carrier frequency of the whole adjacent nodes is calculated by using the average value (S308). A carrier frequency of the node is adjusted based on the adjustment value. [Reference numerals] (AA) No; (BB) Yes; (S301) Preamble reception; (S302) Frequency offset estimation for each neighboring node; (S303) Preamble reception number > R_th; (S304) Average frequency offset value {tilde over (f)}_i,m (k) calculation; (S305) {tilde over (f)}_i,m (k) calculation number (N_δ_i,m (k)) update; (S306) N_δ_n,l (k-1) and q_n,i (k-1) reception; (S307) Final frequency offset value ({circumflex over (f)}_i,m (k)) calculation; (S308) Carrier wave adjustment value (Δf_i (k)) calculation & adjustment; (S309) Carrier wave adjustment request value (q_i,n (k)) calculation; (S310) N_δ_i,n (k) and q_i,n (k) reception
Abstract translation: 目的：提供分布式网络中的频率同步方法，通过调整节点的载波频率，将进入分布式网络的节点的载波频率与节点已进入的网络的载波频率进行同步。 构成：从与节点相邻的多个节点接收前导码（S301）。 从前导码估计每个节点的载波频率偏移（S302）。 计算估计偏移的平均值（S304）。 通过使用平均值来计算整个相邻节点的载波频率的调整值（S308）。 基于调整值调整节点的载波频率。 （附图标记）（AA）否; （BB）是的; （S301）前导码接收; （S302）每个相邻节点的频率偏移估计; （S303）前导码接收号码> R_th; （S304）平均频率偏移值{（t）），（i），（k）计算; （S305）{tilde over（f）} _ i，m（k）计算号（N_δ_i，m（k））更新; （S306）N_δ_n，l（k-1）和q_n，i（k-1）接收; （S307）最终频率偏移值（{f（f）} _ i，m（k））计算; （S308）载波调整值（Δf_i（k））计算和调整; （S309）载波调整请求值（q_i，n（k））计算; （S310）N_δ_i，n（k）和q_i，n（k）接收
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公开(公告)号：KR1020130102005A
公开(公告)日：2013-09-16
申请号：KR1020130023128
申请日：2013-03-05
Applicant: 한국전자통신연구원
CPC classification number: H04W72/005 , H04W4/06 , H04W72/042
Abstract: PURPOSE: A method and a device for managing multicast resources efficiently provide limited resources for a plurality of users. CONSTITUTION: A resource manager (710) allocates a multicast resource to a multicast group, and generates a MAP information element (MAP IE). The MAP IE includes information of the multicast resource and a transmission indication for indicating whether the multicast resource is fragmented. A transmitter (720) transmits the MAP IE to the multicast group. The MAP IE further includes an allocation period indicating a period in which the multicast resource is allocated, and an expiry date in which allocation of the multicast resource is maintained. [Reference numerals] (710) Resource manager; (720) Transmitter
Abstract translation: 目的：一种用于管理组播资源的方法和设备有效地为多个用户提供有限的资源。 构成：资源管理器（710）向组播组分配组播资源，并生成MAP信息元素（MAP IE）。 MAP IE包括组播资源的信息和用于指示组播资源是否被分段的传输指示。 发射机（720）将MAP IE发送到多播组。 MAP IE还包括表示组播资源被分配的时段的分配周期，以及保持多播资源分配的到期日。 （附图标记）（710）资源管理器; （720）发射机
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Patent Agency Ranking
公开(公告)号：KR1020130082062A
公开(公告)日：2013-07-18
申请号：KR1020120142280
申请日：2012-12-07
Applicant: 한국전자통신연구원
CPC classification number: H04L27/2656 , H04J3/06 , H04J11/00 , H04W4/70 , H04W56/0015
Abstract: PURPOSE: A synchronous channel transmitting method, a device thereof, a synchronous channel receiving method, and a device thereof are provided to minimize the inefficiency of resources and the degradation of a synchronous channel preamble receiving performance due to the insertion of a fixed transceiving transition time. CONSTITUTION: A synchronous channel transmitting device (700) includes a transmitter (710), a receiver (720), and a controller (730). The transmitter transmits a synchronous channel preamble part after transmitting a synchronous channel message part. The receiver receives a dedicated channel from different terminals after the transmitter transmits a synchronous channel. The controller inserts a transition time gap in the end of the synchronous channel preamble part for a transceiving transition time of a terminal of the synchronous channel transmitting device. [Reference numerals] (710) Transmitter; (720) Receiver; (730) Controller
Abstract translation: 目的：提供同步信道发送方法，其装置，同步信道接收方法及其装置，以最小化由于插入固定收发转换时间而引起的资源的低效率和同步信道前同步码接收性能的劣化 。 构成：同步信道发送装置（700）包括发射机（710），接收机（720）和控制器（730）。 在发送同步信道消息部分之后，发射机发送同步信道前导码部分。 在发射机发送同步信道之后，接收机从不同终端接收专用信道。 为了同步信道发送装置的终端的收发转移时间，控制器在同步信道前导码部分的末尾插入转移时间间隔。 （附图标记）（710）发射机; （720）接收器; （730）控制器
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公开(公告)号：KR1020130063916A
公开(公告)日：2013-06-17
申请号：KR1020110130539
申请日：2011-12-07
Applicant: 한국전자통신연구원
IPC: H04W40/12
CPC classification number: H04W40/12 , H04L45/302 , H04L45/54
Abstract: PURPOSE: A routing method in a wireless communication system is provided to search for a transmission path requesting different quality by using a routing matrix comprising various type quality articles by using the quality of a link and a node. CONSTITUTION: A data demand performance confirmation unit measures the quality of a node and links facing to neighbor nodes. A path determination unit determines a path customized at the performance demand characteristic of data transmitted by using a routing matrix(S1030). The routing matrix comprises one or more quality articles by using the quality of the node and the quality of the links. The path determination unit transmits data by referring to the path(S1040). [Reference numerals] (S1010) Receive data to be transmitted; (S1020) Determine a service flow to which the data to be transmitted is belonged to; (S1030) Deduce the path to a last destination of the data to be transmitted using a routing table; (S1040) Transmit data to the next hop mesh node of the deduced path
Abstract translation: 目的：提供无线通信系统中的路由方法，通过使用链路和节点的质量，通过使用包括各种类型质量文章的路由矩阵来搜索请求不同质量的传输路径。 规定：数据需求性能确认单元测量节点和面向邻居节点的链路的质量。 路径确定单元确定通过使用路由矩阵发送的数据的性能需求特性定制的路径（S1030）。 路由矩阵通过使用节点的质量和链路的质量来包括一个或多个优质的文章。 路径确定单元通过参照路径发送数据（S1040）。 （附图标记）（S1010）接收要发送的数据; （S1020）确定要发送的数据所属的业务流; （S1030）使用路由表推导要发送的数据的最后目的地的路径; （S1040）将数据发送到推导路径的下一跳网格节点
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228.发明授权
公开(公告)号：KR101275920B1
公开(公告)日：2013-06-14
申请号：KR1020100088356
申请日：2010-09-09
Applicant: 중앙대학교 산학협력단 , 한국전자통신연구원
IPC: H04J11/00
Abstract: 본발명에따르면, 서로다른지연시간을갖는 OFDMA 기반의무선통신네트워크를위한통신장치및 신호검출방법을개시한다. 본발명은각 부반송파별최적 FFT(Fast Fourier Transform) 윈도우시작위치를결정하는 FFT 윈도우시작위치결정부; 및상기결정된 FFT 윈도우시작위치에기초하여주파수영역신호를검출하는 FFT 연산부를포함한다. 본발명에따르면 TDoA/DUR에의한간섭영향을극복할수 있는장점이있다.
Abstract translation: 目的：提供一种用于检测基于具有不同延迟时间的OFDMA的无线通信网络的信号的方法及其装置，以通过确定最佳FFT（快速傅立叶变换）窗口开始位置来最小化无线通信网络中的干扰效应 根据每个子载波。 构成：RF处理单元（400）包括前端单元和滤波器等.ADC（402）将RF处理单元的模拟基带信号改变为数字信号。 FFT（快速傅立叶变换）运算单元（404）通过在快速傅立叶变换中计算数字信号来输出频域的信号。 FFT运算单元通过FFT窗口控制器（406）的控制进行FFT运算。 通信设备获取符号同步，删除CP（循环前缀），并且平行地改变从ADC输出的数据。 FFT窗口开始定位单元（408）确定每个子载波的FFT窗口开始位置。
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公开(公告)号：KR1020130019840A
公开(公告)日：2013-02-27
申请号：KR1020110082075
申请日：2011-08-18
Applicant: 한국전자통신연구원
CPC classification number: H04W84/12 , H04W16/02 , H04W88/10 , H04L5/0044 , H04L5/0055
Abstract: PURPOSE: A virtual AP(Access Point) service based WLAN(Wireless Local Area Network) AP system is provided to support multiple channel access based on a VAP(Virtual Access Point) service protocol. CONSTITUTION: A first VAP(510) is a logic entity which communicates with a first station. A second VAP(520) communicates with a second station. The first VAP exchanges a frame for the first station by using a first channel. The second VAP exchanges the frame for the second station by using a second channel. The frequency band of the first channel is not approached to the frequency band of the second channel. [Reference numerals] (51) Address multiplexer; (512) Network interface A; (514,524,534) Interface Q; (515,525,535) Link layer; (52) Port multiplexer; (522) Network interface B; (53) Application unit; (532) Network interface C; (54) Routing agent
Abstract translation: 目的：提供基于虚拟AP（接入点）服务的WLAN（无线局域网）AP系统，以支持基于VAP（虚拟接入点）服务协议的多信道接入。 构成：第一VAP（510）是与第一站进行通信的逻辑实体。 第二VAP（520）与第二站通信。 第一VAP通过使用第一通道来交换第一站的帧。 第二VAP通过使用第二通道来交换第二站的帧。 第一信道的频带不接近第二信道的频带。 （附图标记）（51）地址多路复用器; （512）网络接口A; （514,524,534）接口Q; （515,525,535）链路层; （52）端口多路复用器; （522）网络接口B; （53）申请单位; （532）网络接口C; （54）路由代理
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公开(公告)号：KR1020130015800A
公开(公告)日：2013-02-14
申请号：KR1020110078036
申请日：2011-08-05
Applicant: 한국전자통신연구원
CPC classification number: H04W40/12 , H04L45/24 , H04L45/302 , H04W40/24 , H04W84/18
Abstract: PURPOSE: A multi-path quality of service routing method in a wireless mesh network is provided to restore and select a path by using an RREQ(Route REQuest) message, an RREP(Route ResPonse) message, and an RERR(Route ERRor) message. CONSTITUTION: The reliability of paths is compared from each other in nodes. Each of the nodes selects a main path and one or more alternative paths(S520). Each of the nodes determines the priority of the paths based on the reliability(S530). Each of the nodes stores the main path, and the alternative path, and the priority in a routing table(S540). When the main path is disconnected, the disconnected node deletes the main path in the routing table(S560). The disconnected node modifies a posterior ranking path to the main path based on the priority. [Reference numerals] (AA) Disconnection of the main path is occurs; (BB) No; (CC) Yes; (S510) Searching paths satisfying QoS which is required by application services; (S520) Selecting a main path and alternative paths; (S530) Determining the priority of the paths; (S540) Storing the main path, alternative paths, and priority in a routing table; (S550) Transmitting packets through the main path; (S560) Deleting the main path from the routing table and modifying a posterior ranking path to the main path
Abstract translation: 目的：提供无线网状网络中的多路径服务质量路由方法，通过使用RREQ（Route REQuest）消息，RREP（Route ResPonse）消息和RERR（Route ERRor）消息来恢复和选择路径 。 规定：路径的可靠性在节点中相互比较。 每个节点选择主路径和一个或多个备选路径（S520）。 每个节点基于可靠性确定路径的优先级（S530）。 每个节点存储路由表中的主路径和替代路径以及优先级（S540）。 当主路径断开时，断开的节点删除路由表中的主路径（S560）。 断开的节点基于优先级修改到主路径的后向路径。 （附图标记）（AA）发生主路径的断开; （BB）否 （CC）是; （S510）应用服务所要求的满足QoS的搜索路径; （S520）选择主路径和替代路径; （S530）确定路径的优先级; （S540）在路由表中存储主路径，备用路径和优先级; （S550）通过主路径发送数据包; （S560）从路由表中删除主路径，修改主路径的后级路径
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