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公开(公告)号：KR1020160116597A
公开(公告)日：2016-10-10
申请号：KR1020150044540
申请日：2015-03-30
Applicant: 한국전자통신연구원
Abstract: 본발명의실시예에따른비면허대역에서의자원공존을위한자원할당방법은통신시스템요구조건에따라통신시스템이사용할서브프레임수를결정하는단계; 상기프레임구성내 서브프레임에대해우선순위를결정하는단계; 상기프레임구성내 서브프레임중 상기결정된통신시스템이사용할서브프레임수만큼을우선순위에따라상기통신시스템에할당하는단계; 및상기통신시스템에할당한서브프레임을제외한나머지서브프레임을비면허기기를위해남겨두는단계를포함할수 있다.
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公开(公告)号：KR1020150094332A
公开(公告)日：2015-08-19
申请号：KR1020140015491
申请日：2014-02-11
Applicant: 한국전자통신연구원
CPC classification number: H04L27/0006
Abstract: 본 발명의 실시 예들은 스펙트럼 센싱 방법 및 스펙트럼 센싱 장치에 관한 것으로, (a) 수신된 신호를 샘플링하는 단계와, (b) 샘플링된 신호에 기초하여 수신된 신호의 강도와 관련된 제1 연산치를 계산하는 단계와, (c) 샘플링된 신호에 기초하여 입력 신호와의 상관성이 가장 큰 제1 주파수 대역을 검색하는 단계와, (d) 수신된 신호로부터 제1 주파수 대역에서의 신호 성분을 제거하여 제1 잔여 성분 신호를 계산하는 단계와, (e) 제1 잔여 성분 신호의 강도와 관련된 제2 연산치를 계산하는 단계와, (f) 제1 연산치와 제2 연산치의 상대적인 값을 사용하여 수신된 신호에 점유되어 있는 주파수 대역이 존재하는지 여부를 판단하는 단계를 포함하는 스펙트럼 센싱 방법을 제공한다.
Abstract translation: 本发明的实施例涉及一种频谱感测方法和频谱感测装置。 频谱感测方法包括以下步骤：（a）对接收到的信号进行采样; （b）基于采样信号计算与接收信号的强度相关的第一计算值; （c）基于采样信号搜索与输入信号具有最高相关性的第一频带; （d）通过从接收信号去除第一频带的信号分量来计算第二残差分量信号; （e）计算与第一残余分量信号的强度相关的第二计算值; 以及（f）通过使用相对于第一和第二计算值的值来确定是否存在由接收信号占据的频带。
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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：KR1020140083502A
公开(公告)日：2014-07-04
申请号：KR1020120153355
申请日：2012-12-26
Applicant: 한국전자통신연구원
CPC classification number: H04L5/06 , H04L5/0007 , H04L5/0073 , H04W16/10 , H04W16/14 , H04W28/16 , H04W72/082 , H04W74/002 , H04W84/12
Abstract: The present invention relates to an apparatus and a method for avoiding signal interference between access points in an unlicensed band. The present invention provides an apparatus for avoiding interference between access points including an adjacent AP presence determination unit that determines whether or not a second access point adjacent to a first access point is present; an operation channel overlapping determination unit that determines whether or not operation channels of the first access point and the second access point overlap with each other when the second access point is determined to be present; a non-overlapping channel setting determination unit that determines whether or not non-overlapping operation channel setting is available when the operation channels of the first access point and the second access point are determined to overlap with each other; and a channel use control unit that controls the operation channel of the first access point to be shared with the second access point when the non-overlapping operation channel setting is determined to be unavailable. According to the present invention, an inter-OBSS interference problem can be addressed, and effective channel sharing becomes available while network-wide overhead is minimized through simple message exchange between the access points.
Abstract translation: 本发明涉及一种用于避免非许可频带中的接入点之间的信号干扰的装置和方法。 本发明提供一种用于避免接入点之间的干扰的装置，包括确定与第一接入点相邻的第二接入点是否存在的相邻AP存在确定单元; 操作信道重叠确定单元，当确定存在第二接入点时，确定第一接入点和第二接入点的操作信道是否彼此重叠; 非重叠信道设置确定单元，其确定当第一接入点和第二接入点的操作信道彼此重叠时，不重叠的操作信道设置是否可用; 以及当确定不重叠操作信道设置不可用时，控制第一接入点的操作信道与第二接入点共享的信道使用控制单元。 根据本发明，可以解决OBSS间干扰问题，并且通过接入点之间的简单消息交换最小化网络范围的开销，有效的信道共享变得可用。
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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：KR1020120057023A
公开(公告)日：2012-06-05
申请号：KR1020100118559
申请日：2010-11-26
Applicant: 한국전자통신연구원
Abstract: PURPOSE: An inflow signal elimination method, apparatus, and recognition wireless communication apparatus using the same are provided to improve the utilization of an antenna by syntagmatically using a data transmission and reception antenna and a spectrum sensing antenna as one antenna. CONSTITUTION: A signal creation unit creates reverse-phase transmission signals by countervailing inflow transmission signals. A data transmission signal transmitted form a data transmission unit is flowed in the inflow transmission signal. A transmission signal elimination unit(460) eliminates the inflow transmission signal by combining with the reverse-phase transmission signal. The signal creation unit includes a signal extraction unit, a phase control unit, and a signal control unit. The signal compensates routes of a signal. The signal control unit controls the size of the signal.
Abstract translation: 目的：提供一种使用其的流入信号消除方法，装置和识别无线通信装置，以通过将数据发送和接收天线和频谱感测天线作为一个天线进行合成来提高天线的利用。 构成：信号创建单元通过抵消流入传输信号产生反相传输信号。 从数据发送单元发送的数据发送信号流入流入发送信号。 传输信号消除单元（460）通过与反相传输信号组合来消除流入传输信号。 信号产生单元包括信号提取单元，相位控制单元和信号控制单元。 信号补偿信号的路由。 信号控制单元控制信号的大小。
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公开(公告)号：KR1020120056644A
公开(公告)日：2012-06-04
申请号：KR1020100118277
申请日：2010-11-25
Applicant: 한국전자통신연구원
IPC: H04J11/00
CPC classification number: H04L27/0006 , H04L27/2647 , H04L27/2678 , H04L25/0202
Abstract: PURPOSE: A method and an apparatus for detecting an OFDM(Orthogonal Frequency Division Multiplexing) signal are provided to improve data transfer rates by eliminating additional information transmission. CONSTITUTION: Sensing data is received through a single channel receiving RF(Radio Frequency) chain. A cyclostationary property of the sensing data is obtained. The presence of a signal is determined based on the cyclostationary property of the sensing data. The presence of the signal is determined by comparing the cyclostationary property of the sensing data with the cyclostationary property of an OFDM signal obtained from a parameter of an OFDM signal. The type of signal is determined according to the presence of the signal.
Abstract translation: 目的：提供一种用于检测OFDM（正交频分复用）信号的方法和装置，以通过消除附加信息传输来提高数据传输速率。 构成：通过接收RF（射频）链的单个信道接收感测数据。 获得感测数据的循环平稳性。 基于感测数据的循环平稳特性来确定信号的存在。 通过将感测数据的循环平稳性质与从OFDM信号的参数获得的OFDM信号的循环平稳性进行比较来确定信号的存在。 根据信号的存在来确定信号的类型。
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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：KR1020110060715A
公开(公告)日：2011-06-08
申请号：KR1020090117391
申请日：2009-11-30
Applicant: 한국전자통신연구원
IPC: H04B7/26
CPC classification number: H04L27/0006 , H04L27/144
Abstract: PURPOSE: A receiving signal detecting method in a wireless communication system is provided to reduce the complexity of computation in the detection of a receiving signal. CONSTITUTION: A receiving signal detection apparatus decides a sensing sequence(110). The receiving signal detection apparatus calculates a first frequency band and the size thereof(120). If the size of first frequency component is greater than a threshold value, the receiving signal detection apparatus detects a receiving signal(130,135). If i-numbered frequency component is smaller than the threshold value, the receiving signal detection apparatus decides whether i and T values are identical(140).
Abstract translation: 目的：提供无线通信系统中的接收信号检测方法，以减少接收信号检测中的计算复杂度。 构成：接收信号检测装置决定感测顺序（110）。 接收信号检测装置计算第一频带及其大小（120）。 如果第一频率分量的大小大于阈值，则接收信号检测装置检测接收信号（130,135）。 如果i编号频率分量小于阈值，则接收信号检测装置判定i和T值是否相同（140）。
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