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

Inventor： 김정현 ,  김지형 ,  김현재 ,  임광재 ,  권동승

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

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

Inventor： 김은경 ,  김성경 ,  김원익 ,  장성철 ,  김석기 ,  윤미영 ,  이현 ,  윤철식 ,  임광재

IPC: H04B7/26 ,  H04W72/00

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

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

Inventor： 김석기 ,  장성철 ,  윤미영 ,  김은경 ,  김원익 ,  이현 ,  김성경 ,  윤철식 ,  임광재

IPC: H04J11/00 ,  H04J3/06 ,  H04B7/26

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

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

Inventor： 이안석 ,  신우람 ,  김현재 ,  임광재 ,  권동승

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

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

Inventor： 조용수 ,  박창환 ,  임광재

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。

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

Inventor： 이명훈 ,  이윤주 ,  임광재 ,  권동승 ,  김성훈

IPC: H04W88/08 ,  H04W84/12 ,  H04B7/26 ,  H04L5/00

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

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

Inventor： 이안석 ,  김현재 ,  임광재 ,  이혁준

IPC: H04W40/12 ,  H04W40/24 ,  H04W84/18

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

公开(公告)号：KR101225182B1

公开(公告)日：2013-01-22

申请号：KR1020090082081

申请日：2009-09-01

Applicant: 한국전자통신연구원

Inventor： 임광재 ,  윤철식 ,  정영호

IPC: H04L27/26 ,  H04L1/18 ,  H04W4/06 ,  H04J11/00

Abstract: 다중 접속 시스템에서 순환 천이를 이용하여 공용 피드백 채널의 피드백 신호 패턴을 생성하는 방법 및 이를 위한 송수신기가 제공된다. 피드백 신호 패턴의 생성 방법은 피드백 신호의 전송 심볼에 순환 전치를 부가하여 첫 번째 전송 심볼을 생성하는 단계와, 상기 첫 번째 전송 심볼을 순환 천이한 후 순환 전치를 부가하여 두 번째 및 그 이후의 전송 심볼을 생성하는 단계를 포함한다.
OFDM, OFDMA, feedback pattern, cyclic shift

公开(公告)号：KR1020130007988A

公开(公告)日：2013-01-21

申请号：KR1020120075358

申请日：2012-07-11

Applicant: 한국전자통신연구원

Inventor： 김원익 ,  김은경 ,  김성경 ,  장성철 ,  차재선 ,  윤미영 ,  이현 ,  윤철식 ,  임광재

IPC: H04W24/10 ,  H04W88/04

CPC classification number: H04W48/16 ,  H04W76/10 ,  H04W88/04

Abstract: PURPOSE: A communication method of a base station and a terminal is provided to configure an optimal temporary topology for a multi-mode terminal. CONSTITUTION: Each terminal(210,220,230) transmits state information to each base station(100)(S240,S250,S260). When one of the terminals is selected from the base station, the selected terminal receives a mode conversion request from the base station(S280). The terminal is operated as the base station. The terminal is operated as a relay station. [Reference numerals] (100) Base station; (210,220,230) Terminal; (S210,S220,S230) State reporting request; (S240,S250,S260) Transmitting state information; (S270) Setting optimal multi-mode terminal; (S280) Mode conversion request; (S290) Mode conversion

Abstract translation: 目的：提供基站和终端的通信方法，为多模终端配置最优临时拓扑。 构成：每个终端（210,220,230）向每个基站（100）发送状态信息（S240，S250，S260）。 当从基站中选择一个终端时，所选终端从基站接收模式转换请求（S280）。 终端作为基站运行。 终端作为中继站运行。 （附图标记）（100）基站; （210,220,230）候机楼; （S210，S220，S230）状态报告请求; （S240，S250，S260）发送状态信息; （S270）设置最佳多模终端; （S280）模式转换请求; （S290）模式转换

公开(公告)号：KR1020130007960A

公开(公告)日：2013-01-21

申请号：KR1020120034992

申请日：2012-04-04

Applicant: 한국전자통신연구원

Inventor： 김은경 ,  김성경 ,  장성철 ,  김원익 ,  윤미영 ,  이현 ,  윤철식 ,  임광재

IPC: H04B7/26 ,  H04B7/14

CPC classification number: H04W48/08 ,  H04B7/155 ,  H04W36/0061 ,  H04W40/22 ,  H04W76/25

Abstract: PURPOSE: A communication method of a base station, a relay station, and a terminal is provided to continuously offer a communication service through a relay station or a neighbor base station when a backhaul link of a base station is damaged. CONSTITUTION: A base station(110) includes a predetermined mark in a DCD(Downlink Channel Descriptor) or an SCD(System Configuration Descriptor) message. The predetermined mark is related to the operation of the base station or the operation of a relay station. The base station transmits the SCD message or the DCD message to a terminal(200). [Reference numerals] (AA) Backhaul link; (BB) Relay link

Abstract translation: 目的：提供基站，中继站和终端的通信方法，当基站的回程链路被损坏时，通过中继站或邻近基站连续提供通信业务。 构成：基站（110）在DCD（下行链路信道描述符）或SCD（系统配置描述符）消息中包括预定标记。 预定标记与基站的操作或中继站的操作有关。 基站将SCD消息或DCD消息发送到终端（200）。 （附图标记）（AA）回程链路; （BB）中继链路