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21. 发明授权

KR100746553B1 직교 주파수 분할 다중화 시스템을 위한 반송파 주파수 오차 기반의 시간 오차 추정 장치 및 그 방법 失效
标题翻译：用于OFDM系统的CFO辅助定时偏移跟踪的装置和方法
公开(公告)号：KR100746553B1
公开(公告)日：2007-08-06
申请号：KR1020060064315
申请日：2006-07-10
申请人： 한국전자통신연구원
发明人： 이일구 , 유희정 , 최은영 , 류득수 , 이석규 , 손정보 , 윤찬호 , 전태현 , 민승욱
IPC分类号： H04L27/26 , H04J11/00 , H04L29/06 , H04L12/28
摘要： 본 발명은 직교 주파수 분할 다중화 시스템을 위한 반송파 주파수 오차 기반의 시간 오차 추정 장치 및 그 방법에 관한 것이다.
직교 주파수 분할 다중화 시스템에서 시간 오차 추정 장치는 반송파 주파수 오차 추정기의 결과를 재활용할 수 있도록 구성된다. 이를 통해 시간 오차 추정 장치는 간단한 구조를 갖고 낮은 복잡도로 시간 오차를 추정할 수 있으며, 그 성능에 있어선 파일롯 기반의 시간 오차 추정 방식과 동일한 성능을 유지할 수 있다.
동기, 직교 주파수 분할 다중화, 시간 오차, 무선 랜, 다중 안테나, 반송파 주파수

22. 发明公开

KR1020070061737A 무선 통신 시스템의 통신 장치 및 그 방법 失效
标题翻译：无线通信系统的传输装置及其方法
公开(公告)号：KR1020070061737A
公开(公告)日：2007-06-14
申请号：KR1020060041349
申请日：2006-05-09
申请人： 한국전자통신연구원
发明人： 윤찬호 , 유희정 , 최은영 , 손정보 , 이일구 , 류득수 , 전태현 , 민승욱 , 유광현 , 노경주 , 김윤주 , 송경희 , 이석규 , 방승찬 , 황승구
IPC分类号： H04L1/14 , H04L1/02
CPC分类号： H04L1/0026 , H04L1/0003 , H04L1/0059 , H04L1/0075 , H04L1/08 , H04L1/188
摘要： A transmission apparatus of a wireless communication system and a method thereof are provided to supply an efficient transmission mode according to a channel state by referring the number of soft-decision data extracted based on response data received from a receiving terminal. A transmission apparatus of a wireless communication system includes a transceiving module(130), a modulator(110), and a demodulator(120). The transceiving module(130) transceives data with a receiving terminal. The modulator(110) performs modulation for a received data bit by a transmission mode. The modulator(110) transmits the modulated data to the transceiving module(130). The demodulator(120) includes a first variable, a second variable, and a third variable. The first variable counts receiving success. The second variable counts receiving failure. The third variable counts re-transmission of the data. The demodulator changes the first variable, the second variable, and the third variable according to receiving of the response data corresponding to the modulation data. The demodulator extracts the number of data which satisfy a specific value by demodulating the response data, and determines the transmission mode based on the number of the data, the first variable, the second variable, and the third variable.
摘要翻译：提供无线通信系统的发送装置及其方法，通过参照从接收终端接收到的响应数据提取的软判决数据的数量，根据信道状态提供有效的发送模式。无线通信系统的发送装置包括收发模块（130），调制器（110）和解调器（120）。收发模块（130）用接收终端收发数据。调制器（110）通过传输模式对接收到的数据位进行调制。调制器（110）将调制的数据发送到收发模块（130）。解调器（120）包括第一变量，第二变量和第三变量。第一个变量计数接收成功。第二个变量计数接收失败。第三个变量计算数据的重新传输。根据对应于调制数据的响应数据的接收，解调器改变第一变量，第二变量和第三变量。解调器通过解调响应数据来提取满足特定值的数据的数量，并且基于数据的数量，第一变量，第二变量和第三变量来确定传输模式。

23. 发明公开

KR1020070061060A 무선 랜 시스템의 채널 변화에 따른 채널 추정 방법, 이를구현하는 채널 추정 장치 및 수신 장치 失效
标题翻译：基于WLAN系统中信道交换的信道估计装置及其方法
公开(公告)号：KR1020070061060A
公开(公告)日：2007-06-13
申请号：KR1020060040606
申请日：2006-05-04
申请人： 한국전자통신연구원
发明人： 유희정 , 최은영 , 윤찬호 , 손정보 , 이일구 , 류득수 , 전태현 , 민승욱 , 이석규
IPC分类号： H04L12/28 , H04L27/26 , H04J11/00
CPC分类号： H04L25/0204 , H04L27/265
摘要： A channel estimating method in accordance with a change in a channel of a wireless LAN system, a channel estimating apparatus for implementing the same, and a receiving apparatus are provided to improve system performance by making a reception processing delay satisfy an SIFS(Short Inter-Frame space) in a wireless LAN system through a dynamic delay structure corresponding to a transmission rate in a channel estimation. Because there is no restored symbol in an initial instantaneous channel estimation, an instantaneous channel is estimated by using a long preamble with respect to data of an FFT-calculated reception symbol and pilot sub-carrier(S201,S203). The FFT-calculated reception symbol is delayed for a certain time period(S205). Channel equalization is performed by using the estimated instantaneous channel estimation information(S207). De-mapping, de-interleaving and viterbi decoding are performed to demodulate the reception symbol(S209). Convolution coding, interleaving and mapping are performed to restore the demodulated reception symbol into a transmission symbol(S211). The instantaneous channel is estimated by using the delayed reception symbol and the restored symbol(S213). The estimated instantaneous channel value is filtered to determine the final channel estimated value(S215). The final channel estimated value is delayed for a certain time period according to a transmission rate and the reception symbol is demodulated by using the delayed final channel estimated value(S217).
摘要翻译：提供根据无线LAN系统的信道变化的信道估计方法，用于实现该信道的信道估计装置和接收装置，以通过使接收处理延迟满足SIFS（Short Inter- 帧空间）通过与信道估计中的传输速率相对应的动态延迟结构来实现。由于在初始瞬时信道估计中没有恢复的符号，所以通过使用关于FFT计算的接收符号和导频子载波的数据的长前导码来估计瞬时信道（S201，S203）。 FFT计算的接收符号延迟一定时间段（S205）。通过使用估计的瞬时信道估计信息来执行信道均衡（S207）。执行去映射，去交织和维特比解码以解调接收符号（S209）。执行卷积编码，交织和映射以将解调的接收符号恢复为传输符号（S211）。通过使用延迟的接收符号和恢复的符号来估计瞬时信道（S213）。估计的瞬时通道值被滤波以确定最终通道估计值（S215）。最终信道估计值根据传输速率被延迟一定时间段，并且通过使用延迟的最终信道估计值来解调接收符号（S217）。

24. 发明公开

KR1020160094875A 비면허대역 이동통신 시스템과 무선랜 시스템간의 채널 공유 장치 및 방법 审中-实审
标题翻译：在不同的移动通信系统和无线局域网之间共享通道的方法和装置
公开(公告)号：KR1020160094875A
公开(公告)日：2016-08-10
申请号：KR1020160011923
申请日：2016-01-29
申请人： 한국전자통신연구원 , 한국항공대학교산학협력단
发明人： 김은경 , 최지훈 , 박재준 , 백승권 , 윤찬호 , 장성철 , 차재선
IPC分类号： H04W74/08 , H04W24/08
摘要： 비면허대역이동통신시스템의기지국은 WLAN 시스템과채널을공유하기위해, 한프레임의시간길이내에서 WLAN 시스템의 WLAN 기기들이송수신하는제1 전송구간과비면허대역이동통신시스템의기기들이송수신하는제2 전송구간을결정하고, 제2 전송구간이시작되기전의 IFS(Inter-Frame Space) 시간동안반송파검출을수행하여채널이유휴상태인것으로판단되면, 제2 전송구간의시작점에서데이터전송을시작한다.
摘要翻译：用于与WLAN系统共享信道的未许可频带移动通信系统的基站包括以下步骤：确定WLAN系统的WLAN设备收发的第一传输间隔和第二传输间隔，其中未许可频带的设备移动通信系统在一帧的时间长度内收发; 在所述第二传输间隔之前的帧间间隔（IFS）期间检测载波; 以及如果所述信道处于空闲状态，则在所述第二传输间隔的开始点开始数据传输。因此，基站可以使无许可频带的信道可用性最大化。

25. 发明公开

KR1020160037767A 면허대역 무선통신 시스템에서 비면허 대역의 간섭 예측 방법 및 장치 审中-实审
标题翻译：许可证无线通信系统中预防干扰的方法和装置
公开(公告)号：KR1020160037767A
公开(公告)日：2016-04-06
申请号：KR1020150133367
申请日：2015-09-21
申请人： 한국전자통신연구원
发明人： 윤찬호 , 김은경 , 박재준 , 백승권 , 송평중 , 장성철 , 차재선
IPC分类号： H04B17/373 , H04B17/345 , H04B17/336 , H04J11/00
摘要： 면허대역무선통신시스템의기지국은단말이수신할비면허대역의하향링크간섭을예측하기위해, 비면허대역에서신호를송신하는비면허기기의밀도를계산하고, 상기기지국과상기단말과의거리를추정하며, 상기거리를이용하여상기단말에수신되는 SINR이설정된임계값 이상일경우의확률값을계산한후, 상기확률값을이용하여전송 MCS(modulation and coding) 모드를결정한다.
摘要翻译：许可频带的无线通信系统的基站包括以下步骤，用于预测终端应该接收的非许可频带的下行链路干扰：测量未经授权的设备的密度，用于发送未许可频带中的信号; 预测基站与终端之间的距离; 当在所述终端中接收的信号与干扰加噪声比（SINR）大于或等于阈值时，通过使用所述距离来测量概率值; 然后，通过使用概率值来确定发送调制和编码（MCS）模式。

26. 发明公开

KR1020160037749A 무선 채널 액세스 방법 및 장치 审中-实审
标题翻译：接入无线信道的方法与装置
公开(公告)号：KR1020160037749A
公开(公告)日：2016-04-06
申请号：KR1020150127882
申请日：2015-09-09
申请人： 한국전자통신연구원
发明人： 차재선 , 김은경 , 박재준 , 백승권 , 윤찬호 , 장성철
IPC分类号： H04W74/08 , H04W28/26 , H04W88/08
摘要： 프레임의채널센싱구간에서비면허대역의채널에대해적어도한 번의채널센싱을수행하는단계, 그리고채널이비어있는경우, 채널에대한예약신호를방송하는단계를통해비면허대역에대한채널액세스를수행하는기지국및 채널액세스방법이제공된다.
摘要翻译：提供了一种用于通过以下步骤访问用于非许可频带的信道的基站和信道接入方法：相对于帧的信道感测部分中的非许可频带的信道感测至少一次的信道; 如果信道为空，则在频道上广播预约信号。

27. 发明公开

KR1020140096243A 단말간 직접 통신에서의 동기 방법 및 장치 审中-实审
标题翻译：终端到终端直接通信中的同步方法和设备
公开(公告)号：KR1020140096243A
公开(公告)日：2014-08-05
申请号：KR1020140008729
申请日：2014-01-24
申请人： 한국전자통신연구원
发明人： 김형진 , 윤찬호 , 정수정 , 김성경 , 조승권 , 장성철 , 권동승
IPC分类号： H04W56/00
CPC分类号： H04W56/002 , H04W4/70 , H04W56/0025
摘要： The present invention relates to a synchronization method of a terminal in direct communication between the terminals, and an apparatus thereof. According to the embodiment of the present invention, the synchronization method of the terminal in direct communication between the terminals includes the steps of: receiving a synchronization signal from a plurality of different terminals in a current frame; and estimating the synchronization time of the proceeding frame based on the synchronization signal received from different terminals.
摘要翻译：本发明涉及终端之间直接通信的终端的同步方法及其装置。根据本发明的实施例，终端之间的直接通信中的终端的同步方法包括以下步骤：从当前帧中的多个不同终端接收同步信号; 以及基于从不同终端接收的同步信号来估计进行帧的同步时间。

28. 发明公开

KR1020140077648A 직접 통신을 수행할 단말 발견 방법 审中-实审
标题翻译：发现终端之间直接通信的目标终端的方法
公开(公告)号：KR1020140077648A
公开(公告)日：2014-06-24
申请号：KR1020120146688
申请日：2012-12-14
申请人： 한국전자통신연구원
发明人： 조승권 , 김성경 , 김형진 , 윤찬호 , 정수정 , 장성철 , 권동승
IPC分类号： H04B7/24
CPC分类号： H04W4/70 , H04W76/14
摘要： According to an embodiment of the present invention, a method of discovering a counterpart terminal with which direct communications, in which wireless terminals directly communicate with each other without passing through a node of an intermediate stage, is performed in an infrastructure network environment in which communications are implemented via the node of the intermediate stage includes the steps of: broadcasting an identifier packet including an identification address field in which typical identification address of each of wireless terminals is recorded and a service field in which information about each service supported by the wireless terminals is recorded; when a wireless terminal which intends to discover the counterpart wireless terminal for the direct communications receives the identifier packet and the information about the service recorded in the service field of the received identifier packet represents a kind of service identical with the kind desired by the wireless terminal, inquiring of the infrastructure through an infra link which is a communications link with the node of the intermediate stage whether the service type desired by the wireless terminal is supported by the wireless terminal broadcasting the received identifier packet; and when the wireless terminal which intends to discover the counterpart wireless terminal for the direct communications confirms a result of the inquiring through the infra link and the service type desired by the wireless terminal is supported by the wireless terminal broadcasting the received identifier packet, determining the wireless terminal having the typical identification address recorded in the identification address field of the received identifier packet as the counterpart wireless terminal.
摘要翻译：根据本发明的实施例，一种发现对方终端的方法，其中无线终端直接通信而不经过中间级节点的直接通信在其中通信的基础设施网络环境中执行经由中间级节点实现的步骤包括以下步骤：广播包括其中记录每个无线终端的典型标识地址的标识地址字段的标识符分组和其中由无线终端支持的关于每个服务的信息的服务字段被记录; 当想要发现用于直接通信的对方无线终端的无线终端接收到标识符分组，并且关于接收到的标识符分组的服务字段中记录的关于服务的信息表示与无线终端所期望的种类相同的服务通过作为与中间节点的通信链路的下行链路询问基础设施，无线终端是否支持无线终端广播所接收的标识符分组; 并且当要发现用于直接通信的对方无线终端的无线终端确认通过下行链路查询的结果，并且由无线终端广播所接收的标识符分组支持无线终端所期望的服务类型时，确定具有记录在接收的标识符分组的标识地址字段中的典型标识地址作为对方无线终端的无线终端。

29. 发明公开

KR1020140034094A 발견 신호 송신 방법 및 장치 审中-实审
标题翻译：用于发送发现信号的装置和方法
公开(公告)号：KR1020140034094A
公开(公告)日：2014-03-19
申请号：KR1020130108501
申请日：2013-09-10
申请人： 한국전자통신연구원
发明人： 윤찬호 , 김형진 , 조승권 , 김성경 , 정수정 , 장성철
IPC分类号： H04W48/16 , H04J11/00
CPC分类号： H04W8/14 , H04L5/0053 , H04W4/70 , H04W8/005 , H04W48/16
摘要： A device transmits a discovery signal including the device′s identification information at an empty slot found in the multiple discovered slots in a discovered domain. The discovery signal includes two OFDM symbols. One of the two OFDM symbols includes one or more tones, and displays the device′s identification information to the sub-carrier location of at least one tone. [Reference numerals] (810) Signal generating unit; (820) Signal transmitting unit; (830) Signal receiving unit
摘要翻译：设备在发现的域中的多个发现的时隙中找到的空槽处发送包括设备的标识信息的发现信号。发现信号包括两个OFDM符号。两个OFDM符号中的一个包括一个或多个音调，并且将设备的识别信息显示到至少一个音调的子载波位置。（附图标记）（810）信号生成单元; （820）信号发送单元; （830）信号接收单元

30. 发明公开

KR1020130066804A 단일 반송파 주파수 영역 등화 시스템에서 위상 추적 장치 및 방법 无效
标题翻译：单载波频域均衡系统中残留载波频偏补偿的装置和方法
公开(公告)号：KR1020130066804A
公开(公告)日：2013-06-21
申请号：KR1020110133475
申请日：2011-12-13
申请人： 한국전자통신연구원
发明人： 윤찬호
IPC分类号： H04L27/26 , H04L27/01
CPC分类号： H04L27/01
摘要： PURPOSE: A phase tracking device and a method thereof in a single carrier frequency domain equalization system are provided to increase power transfer efficiency of a signal sent from a transmission end by having very low PAPR(Peak-to-Average Power Ratio). CONSTITUTION: A compensation unit(410) compensates a frequency offset of a complex signal with an estimated angle through a previously received complex signal and outputs a frequency offset-compensated signal when receiving a complex signal. A first discrete Fourier transform unit(420) transforms the frequency offset-compensated signal and outputs a signal of the frequency domain. An inverse discrete Fourier transform unit(440) converts an equalized signal of the frequency domain into an equalized signal in the time domain. A second discrete Fourier transform unit(460) converts a protection range into the frequency domain and outputs the protection range of the frequency domain. A filter unit(490) performs low pass filtering of an estimated angle and supplies the filtered estimated angle to the compensation unit. [Reference numerals] (410) Compensation unit; (420) First discrete Fourier transform unit; (450) Guard interval extraction unit; (460) Second discrete Fourier transform unit; (470) Adding unit; (480) Estimation unit; (490) Filter unit
摘要翻译：目的：提供单载波频域均衡系统中的相位跟踪装置及其方法，以通过具有非常低的PAPR（峰值平均功率比）来提高从发送端发送的信号的功率传输效率。构成：补偿单元（410）通过先前接收到的复信号补偿具有估计角度的复信号的频偏，并在接收到复信号时输出频偏补偿信号。第一离散付里叶变换单元（420）变换频偏补偿信号并输出频域的信号。逆离散傅立叶变换单元（440）将频域的均衡信号在时域中转换为均衡信号。第二离散付里叶变换单元（460）将保护范围转换成频域并输出频域的保护范围。滤波器单元（490）执行估计角度的低通滤波，并将经滤波的估计角度提供给补偿单元。（附图标记）（410）补偿单元; （420）第一离散傅里叶变换单元; （450）保护间隔提取单元; （460）第二离散傅里叶变换单元; （470）添加单位; （480）估计单位; （490）过滤单元

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