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公开(公告)号：KR1020160037767A
公开(公告)日：2016-04-06
申请号：KR1020150133367
申请日：2015-09-21
Applicant: 한국전자통신연구원
IPC: H04B17/373 , H04B17/345 , H04B17/336 , H04J11/00
Abstract: 면허대역무선통신시스템의기지국은단말이수신할비면허대역의하향링크간섭을예측하기위해, 비면허대역에서신호를송신하는비면허기기의밀도를계산하고, 상기기지국과상기단말과의거리를추정하며, 상기거리를이용하여상기단말에수신되는 SINR이설정된임계값 이상일경우의확률값을계산한후, 상기확률값을이용하여전송 MCS(modulation and coding) 모드를결정한다.
Abstract translation: 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。
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公开(公告)号：KR1020160037749A
公开(公告)日：2016-04-06
申请号：KR1020150127882
申请日：2015-09-09
Applicant: 한국전자통신연구원
Abstract: 프레임의채널센싱구간에서비면허대역의채널에대해적어도한 번의채널센싱을수행하는단계, 그리고채널이비어있는경우, 채널에대한예약신호를방송하는단계를통해비면허대역에대한채널액세스를수행하는기지국및 채널액세스방법이제공된다.
Abstract translation: 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。
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公开(公告)号：KR1020140096243A
公开(公告)日：2014-08-05
申请号：KR1020140008729
申请日：2014-01-24
Applicant: 한국전자통신연구원
IPC: H04W56/00
CPC classification number: H04W56/002 , H04W4/70 , H04W56/0025
Abstract: 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.
Abstract translation: 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。
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公开(公告)号：KR1020140077648A
公开(公告)日：2014-06-24
申请号：KR1020120146688
申请日：2012-12-14
Applicant: 한국전자통신연구원
IPC: H04B7/24
Abstract: 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.
Abstract translation: 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。
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公开(公告)号：KR1020140034094A
公开(公告)日：2014-03-19
申请号：KR1020130108501
申请日：2013-09-10
Applicant: 한국전자통신연구원
CPC classification number: H04W8/14 , H04L5/0053 , H04W4/70 , H04W8/005 , H04W48/16
Abstract: 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
Abstract translation: 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
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Patent Agency Ranking
公开(公告)号：KR1020130066804A
公开(公告)日：2013-06-21
申请号：KR1020110133475
申请日：2011-12-13
Applicant: 한국전자통신연구원
Inventor： 윤찬호
CPC classification number: H04L27/01
Abstract: 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
Abstract translation: 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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公开(公告)号：KR1020110067878A
公开(公告)日：2011-06-22
申请号：KR1020090124653
申请日：2009-12-15
Applicant: 한국전자통신연구원
Inventor： 윤찬호
CPC classification number: H04W56/003 , H04L27/2656
Abstract: PURPOSE: A frame synchronization method is provided to perform efficient frame synchronization by accurately recognizing a frame starting point in a reception end and to reduce data processing delay. CONSTITUTION: Input data is transformed to a parallel type(200). The cross correlation is applied to the transformed parallel data(210). A channel estimation sequence of input data is applied(230). A result value for cross-correlation with parallel data is correlated with a result value for cross-correlation with channel estimation sequence data. A frame synchronous point is extracted from the result value(240).
Abstract translation: 目的：提供一种帧同步方法，通过准确识别接收端的帧起始点并减少数据处理延迟来执行高效的帧同步。 构成：输入数据转换为并行类型（200）。 互相关应用于变换的并行数据（210）。 应用输入数据的信道估计序列（230）。 与并行数据互相关的结果值与与信道估计序列数据互相关的结果值相关。 从结果值（240）中提取帧同步点。
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公开(公告)号：KR1020110056216A
公开(公告)日：2011-05-26
申请号：KR1020100088435
申请日：2010-09-09
Applicant: 한국전자통신연구원
Inventor： 진성근 , 이후성 , 윤찬호 , 김용선 , 권형진 , 김찬 , 홍승은 , 최윤호 , 김경표 , 경문건 , 장갑석 , 신경철 , 이우용 , 정현규 , 한기철 , 김진경 , 최성우
CPC classification number: H04L27/206 , H04B7/14
Abstract: PURPOSE: A transmitting method using a superposition coding in a relay network is provided to restore a base data and an enhanced data by receiving the superposition coded data from a transmitter. CONSTITUTION: A transmitter(110) transmits the superposition coded data of a base data and an enhanced data during a first time period to a relay(120) and a receiver(130). The relay restores the base data and the enhanced data. According to the recovery state, the recovered enhanced data or the recovered base data is transmitted to the transmitter. The receiver receives the superposition coded data or the relay data.
Abstract translation: 目的：提供一种在中继网络中使用叠加编码的发送方法，通过从发射机接收叠加编码数据来恢复基本数据和增强数据。 构成：发射机（110）将第一时间段内的基本数据和增强数据的重叠编码数据发送到中继站（120）和接收机（130）。 继电器恢复基本数据和增强数据。 根据恢复状态，恢复的增强数据或恢复的基本数据被发送到发射机。 接收器接收叠加编码数据或中继数据。
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公开(公告)号：KR100981121B1
公开(公告)日：2010-09-10
申请号：KR1020070133529
申请日：2007-12-18
Applicant: 한국전자통신연구원
IPC: H04B7/08
CPC classification number: H04B7/0851 , H04B7/0669 , H04L1/0048 , H04L1/0631 , H04L25/067 , H04L27/2601
Abstract: 본 발명은 이중 STBC-OFDM 방식의 MIMO 시스템에서 수신 신호를 검파할 때, 선형 방식과 비선형 방식을 함께 사용하여 연산 복잡도를 낮추면서도 검파 성능을 향상시킬 수 있는 수신 장치 및 그 방법에 관한 것으로, 다중입력 다중출력(MIMO) 시스템의 수신 장치에 있어서, 수신 신호 벡터에 대한 단일(Q) 행렬 벡터와 상삼각(R) 행렬 벡터를 계산하는 QR 분해수단; 상기 QR 분해수단에 의해 계산된 Q 행렬 벡터와 R 행렬 벡터를 이용해 일부 심볼을 추정하는 제1 심볼 추정수단; 상기 제1 심볼 추정수단에 의해 추정된 일부 심볼에 대한 비트 단위 로그 우도율(LLR)을 계산하는 LLR 계산수단; 상기 LLR 계산수단에 의해 계산된 로그 우도율을 이용해 디코딩된 신호를 입력받아 상기 수신 신호 벡터에서 간섭을 제거하는 간섭 제거수단; 및 상기 간섭 제거수단에 의해 간섭이 제거된 신호에 대해 선형적으로 나머지 심볼을 추정하는 제2 심볼 추정수단을 포함한다.
MIMO, 다중, 안테나, 입력, 출력, 수신, 선형, 비선형, QR, 분해, 간섭, 제거-
公开(公告)号：KR1020100066326A
公开(公告)日：2010-06-17
申请号：KR1020090070568
申请日：2009-07-31
Applicant: 한국전자통신연구원
Abstract: PURPOSE: A receiving device and a method in a wireless communication system using multi antenna are provided to enable noise variance by antenna almost similar. CONSTITUTION: An AGC(Automatic Gain Control) unit(300) calculates the gain of each variable digital gain amplifier(100) by being provided digital signals outputted from a analog digital converter(200). The AGC selects minimum gain value among the calculated gain values. The AGC calculates difference values between the minimum gain value and rest gain values. According to the calculated difference values, a noise matching amplifier(400) lessens the digital signals.
Abstract translation: 目的：提供使用多天线的无线通信系统中的接收设备和方法，以使天线几乎相似的噪声方差。 构成：AGC（自动增益控制）单元（300）通过提供从模拟数字转换器（200）输出的数字信号来计算每个可变数字增益放大器（100）的增益。 AGC选择计算出的增益值中的最小增益值。 AGC计算最小增益值和静止增益值之间的差值。 根据计算的差分值，噪声匹配放大器（400）减小数字信号。
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