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公开(公告)号：KR101533793B1
公开(公告)日：2015-07-09
申请号：KR1020110029164
申请日：2011-03-31
Applicant: 한국전자통신연구원 , 한국외국어대학교 연구산학협력단
CPC classification number: H04B7/0456 , H04B7/061
Abstract: 다중안테나시스템에서수신단에의해수행되는안테나선택방법이제공된다. 다중안테나시스템에서수신단에의해수행되는안테나선택방법은부반송파를그룹화하여부반송파그룹을설정하는부반송파그룹설정단계, 수신단안테나와복수의송신단안테나각각간의채널정보를획득하는채널정보획득단계, 상기채널정보에기반하여상기복수의송신단안테나각각으로전송할상기부반송파그룹을결정하는안테나선택단계, 및상기안테나선택의결과를포함하는안테나선택정보를송신단으로전송하는안테나선택정보전송단계를포함한다.
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公开(公告)号：KR1020140122429A
公开(公告)日：2014-10-20
申请号：KR1020130039081
申请日：2013-04-10
Applicant: 한국전자통신연구원
CPC classification number: H04W72/042 , H04W74/0816 , H04W72/0453 , H04W74/08
Abstract: 본 발명은, 통신 시스템에서 기지국, 예컨대 액세스 포인트(AP: Access Point)와 복수의 단말들, 예컨대 스테이션(STA: Station)들 간의 데이터 송수신을 위해 다중 채널을 동적(dynamic)으로 할당하며, STA들에게 할당된 채널들 간의 간섭(interference)을 최소화하여 채널을 할당하는 장치 및 방법에 관한 것으로, 복수의 단말들로부터 상기 단말들의 데이터 송수신 방식에 대한 정보가 포함된 단말 정보를 수신하고, 상기 단말들의 데이터 송수신 방식을 확인하고, 상기 단말들에게 할당된 채널들에서의 간섭을 확인하며, 상기 단말들의 데이터 송수신 방식을 바탕으로 상기 단말들의 프라이머리 채널(primary channel) 및 세컨더리 채널(secondary channel)을 상기 단말들에게 할당하고, 상기 간섭을 바탕으로 상기 프라이머리 채널 및 상기 세컨더리 채널을 변경하여 상기 단말들� ��게 할당하며, 상기 단말들에게 할당된 프라이머리 채널 및 세컨더리 채널에 대한 채널 할당 정보를 상기 단말들에게 송신한다.
Abstract translation: 本发明涉及用于在通信系统中分配信道的装置和方法，该通信系统动态地分配用于基站（例如接入点（AP））和多个终端之间的数据传输的多信道，即， 站（STA），并且在最小化信道之间的干扰的同时分配信道。 该方法包括：从多个终端接收包括关于多个终端的数据接收/发送方法的信息的终端信息; 确认终端的数据接收/传输方法，并检查分配给终端的信道之间的干扰; 基于所述数据接收/发送方法向所述终端分配用于所述终端的主信道和辅信道，其中所述主信道和所述辅信道基于所述干扰而改变并分配给所述终端; 以及向终端发送分配给终端的主信道和次信道上的信道分配信息。
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公开(公告)号：KR1020140080721A
公开(公告)日：2014-07-01
申请号：KR1020120146231
申请日：2012-12-14
Applicant: 한국전자통신연구원
IPC: H04J11/00
CPC classification number: H04L27/0006
Abstract: The purpose of the present invention is to provide a spectrum sensing signal detection device and a method thereof reducing errors generated from a discontinuous section in a step of detecting signals in spectrum sensing by easing the discontinuity of signals by adding a fader section at the front and back parts of the discontinuous signals. According to a desirable embodiment of the present invention, the spectrum sensing signal detection device for detecting signals, not continuous signals, for spectrum sensing comprises: an adding part for adding a fader section at the front and back parts of a capture section generated when data is captured for detecting the signals; and a detection part for detecting signals of the spectrum sensing using fast fourier transform (FFT) in the data where the fader section is added.
Abstract translation: 本发明的目的是提供一种频谱感测信号检测装置及其方法，其通过在前端添加推子部分来减轻信号的不连续性，从而减少在频谱感测中检测信号的步骤中从不连续部分产生的误差，以及 背部不连续信号。 根据本发明的期望的实施例，用于检测用于频谱感测的信号而不是连续信号的频谱感测信号检测装置包括：添加部分，用于在数据生成时捕获部分的前部和后部添加推子部分 被捕获用于检测信号; 以及检测部分，用于在添加推子部分的数据中使用快速傅里叶变换（FFT）来检测频谱感测的信号。
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公开(公告)号：KR1020140060407A
公开(公告)日：2014-05-20
申请号：KR1020120126702
申请日：2012-11-09
Applicant: 한국전자통신연구원
CPC classification number: H04W56/0035 , H04J11/00 , H04L7/0016 , H04W56/004
Abstract: Disclosed are an apparatus and a method for synchronizing a reception signal in a cognitive radio system. According to the present invention, the apparatus for synchronizing the reception signal comprises a time synchronization unit for detecting a preamble signal and for estimating the start point of the preamble signal; a frequency synchronization unit for estimating the frequency offset of an LP signal within the preamble signal received based on the start point of the estimated preamble signal; a transmission mode detection unit for detecting a transmission mode based on the result of a cross-correlation function executed between between the received LP signal and the LP signal of three transmission modes; and an offset compensation unit for compensating for a frequency offset component of a data signal corresponding to a data area received after the LP signal and the LP signal received based on the estimated frequency offset.
Abstract translation: 公开了一种在认知无线电系统中同步接收信号的装置和方法。 根据本发明，用于同步接收信号的装置包括：时间同步单元，用于检测前置信号并估计前置信号的起始点; 频率同步单元，用于基于所估计的前导码信号的开始点估计所接收的前导码信号内的LP信号的频率偏移; 传输模式检测单元，用于基于在所接收的LP信号和三个传输模式的LP信号之间执行的互相关函数的结果来检测传输模式; 以及偏移补偿单元，用于基于所估计的频率偏移来补偿对应于接收到的LP信号和接收的LP信号之后的数据区域的数据信号的频率偏移分量。
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Patent Agency Ranking
公开(公告)号：KR1020120125806A
公开(公告)日：2012-11-19
申请号：KR1020110043471
申请日：2011-05-09
Applicant: 한국전자통신연구원
CPC classification number: H04B7/024 , H04J11/0033 , H04L5/0062 , H04L27/0006 , H04B7/0413 , H04B7/0617 , H04L25/0242 , H04L25/0328 , H04W16/14
Abstract: PURPOSE: A secondary transmitting station included in a cognitive radio communication system and a communication method of the station are provided to broaden a spectrum bandwidth selected by a secondary user by using a spectrum band not used by a primary user and a spectrum band used by the primary user together. CONSTITUTION: A secondary transmitting station estimates an interference channel between the secondary transmitting station and a primary user at each of one or more first spectrum bands used by a primary system(330). The secondary transmitting station calculates an orthogonal projection matrix(340). The secondary transmitting station calculates an effective channel between the secondary transmitting station and a secondary receiving station. The secondary transmitting station selects an index of an optimized spectrum band from one or more first spectrum bands based on the orthogonal projection matrix and the effective channel(350). [Reference numerals] (310) Sensing all spectrum bands available for primary users; (320) Spectrum band k is in use?; (330) Estimating interference channel g(k); (340) Calculating an orthogonal projection matrix P_g(k); (350) Selecting index k^ of an optimized spectrum band; (360) Regulating the covariance, R^_s, of a transmission signal; (370) Orthogonal projection matrix P_g(k) = identical matrix I_Nt; (380) Storing in order in a backup channel list, beginning the index of the optimized spectrum band; (AA) Start; (BB) End
Abstract translation: 目的：提供包括在认知无线电通信系统中的辅助发射台和站的通信方法，以通过使用主用户未使用的频谱带和由主用户使用的频谱带来扩大由次用户选择的频谱带宽 主要用户在一起 构成：辅助发射站在由主系统（330）使用的一个或多个第一频谱带中的每一个估计第二发射台与主用户之间的干扰信道。 二次发射台计算正交投影矩阵（340）。 二次发射站计算二次发射站和次要接收站之间的有效信道。 第二发射台基于正交投影矩阵和有效信道（350）从一个或多个第一频谱带中选择优化的频谱带的索引。 （附图标记）（310）感测可用于主要用户的所有频谱带; （320）频带k在使用中？ （330）估计干扰信道g（k）; （340）计算正交投影矩阵P_g（k）; （350）选择优化频谱带的索引k ^ （360）调节传输信号的协方差R ^ _s; （370）正交投影矩阵P_g（k）=相同矩阵I_Nt; （380）在备份通道列表中按顺序存储，开始优化频谱带的索引; （AA）开始; （BB）结束
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公开(公告)号：KR1020120087093A
公开(公告)日：2012-08-06
申请号：KR1020120008140
申请日：2012-01-27
Applicant: 한국전자통신연구원
IPC: H04B7/04
CPC classification number: H04L27/0006 , H04B7/0617 , H04W72/10
Abstract: PURPOSE: A wireless communication method of a wireless communication apparatus using multiple antennas based on database information is provided to improve communication efficiency by reducing interference around spaces. CONSTITUTION: A first and a second adjacent communication apparatus create communication parameter information and location information(S100,S110). A wireless communication apparatus creates the location information(S120). A database creates the communication parameter information and location information for the first and the second adjacent communication apparatus(S160). The wireless communication apparatus searches radio resources which are not used by the first adjacent communication apparatus which has the order of priority for a specific wireless channel(S180).
Abstract translation: 目的：提供一种基于数据库信息使用多个天线的无线通信装置的无线通信方法，通过减少空间间的干扰来提高通信效率。 构成：第一和第二相邻通信装置创建通信参数信息和位置信息（S100，S110）。 无线通信装置创建位置信息（S120）。 数据库创建第一和第二相邻通信装置的通信参数信息和位置信息（S160）。 无线通信装置搜索对于特定无线信道具有优先顺序的第一相邻通信装置未使用的无线资源（S180）。
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公开(公告)号：KR1020120056641A
公开(公告)日：2012-06-04
申请号：KR1020100118273
申请日：2010-11-25
Applicant: 한국전자통신연구원
CPC classification number: H04W8/005 , H04W24/10 , H04W48/16 , H04L43/0811
Abstract: PURPOSE: A heterogeneous communication system detection method and apparatus thereof are provided to determine kinds of heterogeneous communication system based on a system kind database by including silent duration information corresponding to the system kind database. CONSTITUTION: An RF(Radio Frequency) signal reception unit(201) receives signals from a specific communication system. A silent duration evaluation unit(202) evaluates silent duration between frames based on the received signals. A system kind determination unit(203) determines kinds of the specific communication system based on the evaluated silent duration. The specific communication system transmits data of a frame unit. The silent duration is respectively applied to the communication systems.
Abstract translation: 目的：提供异构通信系统检测方法及其装置，通过包括对应于系统种类数据库的静默持续时间信息来确定基于系统类型数据库的异构通信系统的种类。 构成：RF（射频）信号接收单元（201）从特定通信系统接收信号。 无声持续时间评估单元（202）基于所接收的信号来评估帧之间的无声持续时间。 系统种类确定单元（203）基于所评估的无声持续时间确定特定通信系统的种类。 特定通信系统发送帧单元的数据。 静音持续时间分别应用于通信系统。
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公开(公告)号：KR1020120028203A
公开(公告)日：2012-03-22
申请号：KR1020110025113
申请日：2011-03-22
Applicant: 한국전자통신연구원
IPC: H04J11/00
CPC classification number: H04W72/082 , H04J11/0023 , H04L27/2666 , H04L27/2691 , H04L5/0062
Abstract: PURPOSE: An apparatus and method for controlling subcarrier spacing in a wireless communication system are provided to control the increase of interference at each band due to the change of subcarrier spacing or RF increase in a system operating a multi-band. CONSTITUTION: An interference detection part(510) detects interference generated in a plurality of channel bandwidths or a plurality of frequency bands. The interference detection part provides each detected channel bandwidth or interference information showing the frequency band interference to a subcarrier spacing controlling part(530). A system parameter supplying part(520) supplies a system parameter related to the subcarrier spacing to the subcarrier spacing controlling part. The subcarrier spacing controlling part controls the interval of subcarriers. A subcarrier allocation part(540) arranges the subcarrier by periodically inserting a null subcarrier between existing allocated subcarriers.
Abstract translation: 目的：提供一种用于控制无线通信系统中的子载波间隔的装置和方法，用于控制由于操作多频带的系统中子载波间隔的变化或RF增加而导致的每个频带的干扰增加。 构成：干扰检测部（510）检测在多个信道带宽或多个频带中产生的干扰。 干扰检测部分向子载波间隔控制部分（530）提供表示频带干扰的每个检测到的信道带宽或干扰信息。 系统参数提供部（520）向子载波间隔控制部提供与子载波间隔相关的系统参数。 副载波间隔控制部控制副载波的间隔。 子载波分配部分（540）通过在现有分配的子载波之间周期性地插入空子载波来布置副载波。
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公开(公告)号：KR1020110018839A
公开(公告)日：2011-02-24
申请号：KR1020100078817
申请日：2010-08-16
Applicant: 한국전자통신연구원
IPC: H04W16/14
Abstract: PURPOSE: A recognition mobile network system is provided to efficiently manage candidate channels by receiving channel information through a converted candidate channel. CONSTITUTION: A master unit measures a channel estimation signal, and receives measured channel state information. If a reference channel idle period is come up, a communication unit changes a communication channel into a candidate channel, and performs communication. A channel information management part receives channel information including candidate channel to be changed in the idle period, and controls channel change based on the channel information.
Abstract translation: 目的：提供一种识别移动网络系统，通过转换的候选信道接收信道信息来有效地管理候选信道。 构成：主单元测量信道估计信号，并接收测量的信道状态信息。 如果参考信道空闲时段出现，则通信单元将通信信道改变为候选信道，并进行通信。 频道信息管理部分在空闲时段中接收包括要改变的候选频道的频道信息，并且基于频道信息来控制频道改变。
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