公开(公告)号：KR1020130068236A

公开(公告)日：2013-06-26

申请号：KR1020110135196

申请日：2011-12-15

Applicant: 한국전자통신연구원

Inventor： 조상인 ,  강규민 ,  정병장

IPC: H04W16/14 ,  H04B7/26

CPC classification number: H04W72/0453 ,  H04L27/0006 ,  H04W16/14 ,  H04W52/244 ,  H04W52/283 ,  H04W72/00

Abstract: PURPOSE: An idle band utilization system using a connection recognition signal is provided to transmit the connection recognition signal by converting the strength of the connection recognition signal based on radio wave arrival distance. CONSTITUTION: A first idle band device(300) searches an available channel by using a spectrum sensing function, a database connection function, and a beacon transceiving function. The first idle band device uses the searched available channel. A second idle band device(310) does not execute a searching function for the available channel by using the spectrum sensing function, the database connection function, or the beacon transceiving function. The second idle band device recognizes the available channel used in the first idle band device based on a connection recognition signal transmitted from the first idle band device. [Reference numerals] (300) First idle band device; (301) Available channel searching unit; (302) Connection recognition signal generation unit; (303) Signal intensity adjustment unit; (304) Connection recognition signal transmission unit; (305) Service processor; (310) Second idle band device; (311) Connection recognition signal reception unit; (312) Service processor

Abstract translation: 目的：提供使用连接识别信号的空闲频带利用系统，通过基于无线电波到达距离转换连接识别信号的强度来发送连接识别信号。 构成：第一空闲频带设备（300）通过使用频谱感测功能，数据库连接功能和信标收发功能来搜索可用信道。 第一个空闲频段设备使用搜索到的可用频道。 第二空闲频带设备（310）不通过使用频谱感测功能，数据库连接功能或信标收发功能来执行可用频道的搜索功能。 第二空闲频带设备基于从第一空闲频带设备发送的连接识别信号来识别在第一空闲频段设备中使用的可用信道。 （附图标记）（300）第一空闲频带装置; （301）可用频道搜索单元; （302）连接识别信号生成单元; （303）信号强度调整单元; （304）连接识别信号传输单元; （305）服务处理器; （310）第二空闲带设备; （311）连接识别信号接收单元; （312）服务处理器

公开(公告)号：KR1020130068222A

公开(公告)日：2013-06-26

申请号：KR1020110135148

申请日：2011-12-15

Applicant: 한국전자통신연구원

Inventor： 강규민 ,  조상인 ,  정병장

IPC: H04W16/14

CPC classification number: H04W16/14 ,  H04B17/382 ,  H04W72/082

Abstract: PURPOSE: A frequency band selecting method in a TVWS(TeleVision White Space) DB(DataBase) and a device thereof are provided to apply a separation distance by considering the areas approved for broadcasting and receivable areas when an available channel list is calculated. CONSTITUTION: A location of a TVBD(TeleVision Band Device) is determined as a neighboring channel boundary line of the areas approved for broadcasting or a neighboring channel boundary line of receivable areas(310). When the TVBD is located outside one or more boundary lines(320), the location is determined as the neighboring channel boundary line or other boundary line. When the TVBD is located at the other boundary line, a channel which is able to use the neighboring channel of a specific channel is notified to the TVBD(330). [Reference numerals] (300) Recognize a neighboring channel boundary line of the areas approved for broadcasting or a neighboring channel boundary line of receivable areas for a specific channel; (310) Is a TVBD located outside one or more of the neighboring channel boundary line of the areas approved for broadcasting and the neighboring channel boundary line of receivable areas?; (320) Is the TVBD located outside of another boundary line?; (330) Notify the availability of the neighboring channel of the specific channel to the TVBD; (AA) Start; (BB,DD) No; (CC,EE) Yes; (FF) End

Abstract translation: 目的：提供TVWS（TeleVision White Space）数据库（DataBase）及其装置中的频带选择方法，通过考虑在计算可用频道列表时对广播和可接收区域的批准区域来应用间隔距离。 规定：TVBD（TeleVision Band Device）的位置被确定为被批准用于广播的区域或邻近的可接收区域的相邻信道边界线的相邻信道边界线（310）。 当TVBD位于一个或多个边界线（320）之外时，该位置被确定为相邻信道边界线或其他边界线。 当TVBD位于另一边界线时，能够使用特定信道的相邻信道的信道被通知给TVBD（330）。 （附图标记）（300）识别为广播批准的区域或特定频道的可接收区域的相邻频道边界线的相邻频道边界线; （310）TVBD是否位于被批准广播的区域的邻近信道边界线的一个或多个以及可接收区域的相邻信道边界线之外？ （320）TVBD是否位于另一边界线外？ （330）向TVBD通知特定频道的邻近频道的可用性; （AA）开始; （BB，DD）否; （CC，EE）是; （FF）结束

公开(公告)号：KR1020130066433A

公开(公告)日：2013-06-20

申请号：KR1020110133246

申请日：2011-12-12

Applicant: 한국전자통신연구원

Inventor： 오진형 ,  김상원 ,  정병장

IPC: H04L1/18 ,  H04W16/14 ,  H04B7/26

CPC classification number: H04L1/18 ,  H04W52/288 ,  H04W88/06

Abstract: PURPOSE: A transceiving method of a second user in a recognition wireless network is provided to offer a stable communication service to second users located in an outer region of a cell. CONSTITUTION: A second transmitter determines transmission power in consideration of a sensing error after calculating output probability of a first transmitter(S304). When the second transmitter transmits(S306) a packet to a receiver of a second user with the determined transmission power, a second relay and a second receiver receive a packet(S308,S310). When demodulation of the receiver of the second user is successful(S316), the second transmitter broadcasts a reception success signal to the second relay(S318). When demodulation of the receiver of the second user is failed(S316), the second transmitter broadcasts a reception failure signal(S320) and the second relay retransmits a packet to the second receiver(S324). [Reference numerals] (210) Second transmitter; (220) Second receiver; (230) Second repeater; (AA) Packet transmission; (BB) ACK transmission; (CC,GG) Yes; (DD,FF) No; (EE) NACK transmission; (S302) First transmitter output calculation; (S304) Sensing error consideration power transmitter decision; (S308,S310) Packet receiver; (S312) Packet save; (S314) Demodulation; (S316) Demodulation success?; (S322) NACK received?; (S324) Repeat packet request

Abstract translation: 目的：提供识别无线网络中的第二用户的收发方法，以向位于小区外部区域的第二用户提供稳定的通信服务。 构成：在计算第一发射机的输出概率之后，考虑到感测误差，第二发射机确定发射功率（S304）。 当第二发射机以确定的发射功率向第二用户的接收机发送（S306）分组时，第二中继器和第二接收机接收分组（S308，S310）。 当第二用户的接收机的解调成功时（S316），第二发射机向第二中继广播接收成功信号（S318）。 当第二用户的接收机的解调失败（S316）时，第二发射机广播接收失败信号（S320），第二中继器向第二接收机重传分组（S324）。 （附图标记）（210）第二发送器; （220）第二接收机; （230）第二中继器; （AA）分组传输; （BB）ACK传输; （CC，GG）是; （DD，FF）否; （EE）NACK传输; （S302）第一发射机输出计算; （S304）感应误差考虑功率变送器决定; （S308，S310）分组接收机; （S312）数据包保存; （S314）解调; （S316）解调成功？ （S322）NACK接收？ （S324）重复数据包请求

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

Inventor： 박재현 ,  정병장 ,  황성현 ,  엄중선 ,  정회윤 ,  박진석 ,  임선민 ,  김상원

IPC: H04B7/26 ,  H04W16/14 ,  H04B7/04

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

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

Inventor： 엄중선 ,  정병장

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）。

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

Inventor： 김상원 ,  임선민 ,  정회윤 ,  정병장

IPC: H04B1/58 ,  H04B1/48 ,  H04L27/00 ,  H04L25/08 ,  H04W16/14

CPC classification number: H04L27/0006 ,  H04B1/582 ,  H04B1/44 ,  H04B1/48 ,  H04L25/08 ,  H04W16/14

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。

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

Inventor： 임선민 ,  정회윤 ,  김상원 ,  정병장

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。

公开(公告)号：KR1020120040642A

公开(公告)日：2012-04-27

申请号：KR1020110027393

申请日：2011-03-28

Applicant: 한국전자통신연구원

Inventor： 유성진 ,  고광진 ,  박진석 ,  정병장 ,  김상원

IPC: H04W28/06 ,  H04L12/801 ,  H03M7/30

CPC classification number: H04W28/06 ,  H03M7/30 ,  H04L47/10

Abstract: PURPOSE: A packet transmission method in a communication system and apparatus thereof are provided to improve transmission efficiency in a communication system by reducing protocol overheads. CONSTITUTION: A first apparatus requests permission to use a compressed packet before a second apparatus transmits a message(S210). The second apparatus transmits a specific preamble with the message for approving the usage of the compressed packet(S220). When the detection preparation of the specific preamble is completed, the first apparatus requests the packet to the second apparatus(S230). The second apparatus transmits the compressed packet by using the specific preamble(S240).

Abstract translation: 目的：提供通信系统及其装置中的分组传输方法，以通过减少协议开销提高通信系统中的传输效率。 构成：在第二装置发送消息之前，第一装置请求使用压缩包的许可（S210）。 第二装置发送具有用于批准压缩分组的使用的消息的特定前导码（S220）。 当特定前同步码的检测准备完成时，第一装置向第二装置请求分组（S230）。 第二装置通过使用特定前导码发送压缩分组（S240）。

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

Inventor： 황성현 ,  엄중선 ,  정회윤 ,  고광진 ,  정병장 ,  김창주

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。

公开(公告)号：KR1020100133918A

公开(公告)日：2010-12-22

申请号：KR1020100055935

申请日：2010-06-14

Applicant: 한국전자통신연구원

Inventor： 정병장 ,  서방원 ,  안재영

IPC: H04L27/26 ,  H04J11/00

CPC classification number: H04L5/0051 ,  H04L27/2614 ,  H04L27/2636 ,  H04L27/2611 ,  H04L25/0224 ,  H04L27/2607 ,  H04L27/2628

Abstract: PURPOSE: By minimizing the increase of PAPR the reference symbol structure for the DFT sprdead OFDM system multiplexes data symbol and reference symbol in the same OFDM symbol. CONSTITUTION: Data symbols(310, 311, 312, 313) and reference symbols transformed the DFT are multiplexed in the frequency domain. It alternates with reference symbols and data symbols are multiplexed. Data symbols transformed DFT cope with odd-number subcarriers. Reference symbols cope with even numbered turn subcarriers.

Abstract translation: 目的：通过最小化PAPR的增加，DFT sprdead OFDM系统的参考符号结构在相同的OFDM符号中复用数据符号和参考符号。 构成：数据符号（310,311,312,313）和变换的DFT的参考符号在频域中被复用。 它与参考符号交替，数据符号被复用。 数据符号变换的DFT处理奇数子载波。 参考符号对应偶数转副载波。