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公开(公告)号：KR1020180062956A
公开(公告)日：2018-06-11
申请号：KR1020170162470
申请日：2017-11-30
Applicant: 한국전자통신연구원
CPC classification number: H04W74/0833 , H04W72/0446 , H04W74/008 , H04W92/20 , H04W74/0866
Abstract: 무선통신시스템에서랜덤액세스방법및 장치가개시된다. 본발명에따른무선통신시스템에서단말의랜덤액세스방법은, 기지국으로부터복수의접속슬롯들로구성되는 PRACH에대한구성정보를포함하는시스템정보를수신하는단계, 상기구성정보에기초하여복수의접속슬롯들중에서하나의접속슬롯을선택하는단계및 상기하나의접속슬롯을통해랜덤액세스프리앰블을상기기지국에전송하는단계를포함한다. 따라서이러한방법을통해무선자원의추가점유를하지않고랜덤액세스채널의용량을증가시킬수 있다.
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公开(公告)号：KR1020170084611A
公开(公告)日：2017-07-20
申请号：KR1020160003857
申请日：2016-01-12
Applicant: 한국전자통신연구원
CPC classification number: H04W72/046 , H04L5/0023 , H04W72/0413 , H04W72/048 , H04W74/004 , H04W74/008
Abstract: 기지국은복수의송수신빔을이용하여서비스영역을복수의부영역으로나누고, 각부영역을구분할수 있는부영역참조신호및 각부영역내에있는송수신빔을구분할수 있는빔구분참조신호를전송하고, 각부영역에속한송신빔들을이용하여각 부영역의랜덤접속정보를포함한시스템정보블록을전송하며, 단말로부터상기단말이속한부영역의랜덤접속정보를이용하여전송된랜덤접속프리엠블을수신하여상기단말이속한송수신빔을결정하고, 상기단말이속한송수신빔의자원할당정보를포함하는랜덤접속응답메시지를상기단말로전송한다.
Abstract translation: 通过使用多个发射和接收波束共享服务区域划分为多个子区域的基站，并且将光束9分钟的参考信号可以在所述子域参考信号分离的发射和接收的光束，并且可以分开角部区域的每个部分区域，各部分区域 使用属于传输所述系统信息块包括每个子区域的随机接入的信息，并且接收由所述子区域中的随机接入信息发送的随机接入前导码的发送波束属于从终端到终端的终端 确定的接收波束属于，发送包括所述发送的资源分配信息的随机接入响应消息和接收波束属于移动站到移动站。
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公开(公告)号：KR1020160091790A
公开(公告)日：2016-08-03
申请号：KR1020150012383
申请日：2015-01-26
Applicant: 한국전자통신연구원
IPC: H04B10/2575
CPC classification number: H04L27/2628 , H04B10/25753 , H04L5/0053 , H04L27/2602 , H04W88/085 , H04B2210/006
Abstract: 기지국의제어정보및 상태정보전송방법과그 장치가제공된다. 디지털유닛과무선유닛이광 전송장치를통하여신호를송수신하는분리형기지국에서, 디지털유닛이안테나를통하여전송하는하향링크송신신호의보호대역에무선유닛을제어하기위한제어정보를삽입하여무선유닛으로전송한다. 또한무선유닛은안테나를통하여수신되는상향링크수신신호의보호대역에상태정보를삽입하여디지털유닛으로전송한다.
Abstract translation: 本发明提供一种用于发送基站的控制信息和状态信息的方法及其装置。 在数字单元和无线单元通过光传输设备发送和接收信号的可分离基站中，数字单元将用于控制无线单元的控制信息插入通过天线发送的较低链路传输信号的保护频带 ，并将其发送到无线单元。 此外，无线单元将状态信息插入通过天线接收的上级链路接收信号的保护频带，并将其发送到数字单元，从而在数字单元和无线之间有效地发送控制信息和状态信息 可分离基站的单位。
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公开(公告)号：KR1020160062718A
公开(公告)日：2016-06-02
申请号：KR1020150165039
申请日：2015-11-24
Applicant: 한국전자통신연구원
Abstract: 무선통신시스템의기지국은가용한상향링크무선자원블록내에서복수의랜덤접속채널의무선자원블록이대칭구조를갖도록, 상기복수의랜덤접속채널이할당되는무선자원블록의인덱스를결정하고, 결정된무선자원블록의인덱스에해당하는위치에상기복수의랜덤접속채널을할당한다.
Abstract translation: 无线通信系统的基站确定用于分配随机连接信道的无线资源块的索引，使随机连接信道的无线资源块在可用的上行链路无线资源块中具有对称的结构，并且分配随机连接 信道到与所确定的无线资源块的索引相对应的位置。 因此，可以有效地操作可用的上行链路无线资源块。
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公开(公告)号：KR1020140077400A
公开(公告)日：2014-06-24
申请号：KR1020120146165
申请日：2012-12-14
Applicant: 한국전자통신연구원
IPC: H01Q21/06
Abstract: The present invention relates to a multiple input/output apparatus with a plurality of multi-polarized antennas, which provides at least two multi-polarized antennas to maintain the orthogonality between polarized antennas, wherein the multi-polarized antennas are installed apart from each other by a predetermined distance, and each multi-polarized antenna to maintain the orthogonality included in one multi-polarized antenna and each multi-polarized antenna to maintain the orthogonality included in the other multi-polarized antenna are provided to be rotated by a specific angle, thereby reducing the unit area occupied for the placement of the antennas and efficiently increasing transmission capacity through the control of the angle of each polarized antenna of the multi-polarized antennas.
Abstract translation: 本发明涉及具有多个多极化天线的多输入/输出装置，其提供至少两个多极化天线以保持极化天线之间的正交性，其中多极化天线通过 并且为了保持包含在另一个多极化天线中的正交性的每个多极化天线以及包含在一个多极化天线中的正交性的每个多极化天线被提供为旋转特定角度，由此 减少用于放置天线所占用的单位面积，并且通过控制多极化天线的每个极化天线的角度来有效地提高传输容量。
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Patent Agency Ranking
公开(公告)号：KR101269683B1
公开(公告)日：2013-06-04
申请号：KR1020090091963
申请日：2009-09-28
Abstract: 본 발명은 신호 검출 방법 및 수신 장치에 관한 것이다. 본 발명에 따른 신호 검출 방법은 다중 입출력 안테나를 포함하는 통신 시스템의 수신 장치가 신호를 검출하는 방법으로서, 수신 신호 벡터와 채널 상태가 고려된 송신 심볼 벡터 사이의 거리의 제곱 값을 구하는 단계, 상기 거리의 제곱 값을 제1 성분 및 제2 성분으로 분류하는 단계, 상기 제1 성분을 최소화 하여 복수의 제1 연성해(soft symbol estimate)를 구하는 단계, 상기 복수의 제1 연성해를 기초로 상기 제1 성분의 해집합을 구하는 단계, 상기 제2 성분을 최소화 하여 복수의 제2 연성해를 구하는 단계, 상기 복수의 제2 연성해를 기초로 상기 제2 성분의 해집합을 구하는 단계, 그리고 상기 제1 성분의 해집합과 상기 제2 성분의 해집합을 합하여 최종 해집합을 구하는 단계를 포함한다.
디텍션, 디코딩, MIMO, likelihood-
公开(公告)号：KR1020130003104A
公开(公告)日：2013-01-09
申请号：KR1020110064163
申请日：2011-06-30
Applicant: 한국전자통신연구원
IPC: H04L27/26
CPC classification number: H04L27/2607 , H04L5/0035 , H04L27/2662 , H04L27/2691
Abstract: PURPOSE: A method for demodulating a downstream link signal in a wireless communication system and a device thereof are provided to efficiently use wireless resources by controlling a length of a CP through proper scheduling. CONSTITUTION: A first OFDM(Orthogonal Frequency Division Multiplexing) signal is received from a first node servicing a terminal. A second OFDM signal is received from a second node. The first and the second OFDM signals are demodulated in an FFT(Fast Fourier Transform) section. The first and the second OFDM signals are a normal mode signal having a first CP(701) or a cooperative mode having a second CP(702). A length of the second CP is longer than a length of the first CP. [Reference numerals] (701) Short CP; (702) Long CP; (703) Normal mode demodulation; (704) Cooperative mode demodulation; (705) Relay delay; (AA) First OFDM signal; (BB) Second OFDM signal
Abstract translation: 目的：提供一种用于解调无线通信系统中的下行链路信号的方法及其装置，以通过适当调度来控制CP的长度来有效地使用无线资源。 构成：从服务于终端的第一节点接收第一OFDM（正交频分复用）信号。 从第二节点接收第二OFDM信号。 第一和第二OFDM信号在FFT（快速傅里叶变换）部分被解调。 第一和第二OFDM信号是具有第一CP（701）或具有第二CP（702）的协作模式的正常模式信号。 第二CP的长度比第一CP的长度长。 （附图标记）（701）短CP; （702）长CP; （703）正常模式解调; （704）协同模式解调; （705）继电器延时; （AA）第一OFDM信号; （BB）第二OFDM信号
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公开(公告)号：KR1020110065114A
公开(公告)日：2011-06-15
申请号：KR1020090121974
申请日：2009-12-09
IPC: H04B7/04
CPC classification number: H04B7/0854 , H03M13/3927 , H04L25/0256
Abstract: PURPOSE: A method for increasing an LLR(Log Likelihood Ratio) reliability based on a MIMO(Multi Input Multi Output) MMSE(Minimum Mean Square Error) receiver is provided to determine the LLR of a vector which does not satisfy the reciprocity as 0. CONSTITUTION: If an SINR(Signal and Interference and Noise Ratio) information about each existing stream is not available, the SINR is the same about the each stream, the LLR of an MMSE symbols which do not satisfy a reciprocity is determined as 0(204). Therefore, it is prevented that the LLR value of the high error probability is used for the channel encoding. If the SINR information of each stream is available, or the SINR of each stream is not same, the removed a priori item is calculated using the reciprocity information.
Abstract translation: 目的：提供一种基于MIMO（多输入多输出）MMSE（最小均方误差）接收机来增加LLR（对数似然比）可靠性的方法，以确定不满足互易性的向量的LLR为0。 构成：如果关于每个现有流的SINR（信号和干扰和噪声比）信息不可用，则SINR对于每个流是相同的，不满足互易性的MMSE符号的LLR被确定为0（204 ）。 因此，阻止了将高错误概率的LLR值用于信道编码。 如果每个流的SINR信息可用，或者每个流的SINR不相同，则使用互易性信息来计算移除的先验项。
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公开(公告)号：KR1020100065068A
公开(公告)日：2010-06-15
申请号：KR1020090094028
申请日：2009-10-01
IPC: H04B7/04
CPC classification number: H04L1/02 , H04B7/0413 , H04B7/08 , H04L1/0054
Abstract: PURPOSE: A device and a method for signal detection using log likelihood ratio in a multi input multi output system are provided to effectively detect signal by using ML(Maximum Likelihood) and M-ML(Modified ML). CONSTITUTION: A signal detection device selectively performs the signal detection according to M-ML(Modified ML) and ML(Maximum Likelihood)(S110). A signal detection unit rotates signal constellations of the first quadrant by each transmission symbol in the set angle. The signal detection unit obtains the signal constellations about the rest of quadrants through the change of sign(S130). A LLR(Log Likelihood Ratio) generating unit generates LLR according to comparison of matrix calculated about candidate by each transmission symbol(S150).
Abstract translation: 目的：提供一种在多输入多输出系统中使用对数似然比进行信号检测的装置和方法，以通过使用ML（最大似然）和M-ML（Modified ML）来有效地检测信号。 构成：信号检测装置根据M-ML（修正ML）和ML（最大似然）选择性地执行信号检测（S110）。 信号检测单元通过设定角度的每个发送符号旋转第一象限的信号星座。 信号检测单元通过改变符号获得关于其余象限的信号星座（S130）。 LLR（对数似然比）生成部根据通过各发送符号计算的关于候选的矩阵的比较生成LLR（S150）。
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公开(公告)号：KR1020100062905A
公开(公告)日：2010-06-10
申请号：KR1020090091963
申请日：2009-09-28
CPC classification number: H04B7/0857 , H04B7/0413 , H04L27/2649
Abstract: PURPOSE: A method for detecting a signal and a receiving device is provided to detect and decode the signal with low complexity at a receiving terminal of a communications system including a multiple input/ output antenna. CONSTITUTION: The distance of a receiving signal vector and a transmitting symbol vector is squared(S210). The square of distance is classified as a first component and a second component. A first component is minimized. A plural first soft symbol estimates are obtained(S220). The solution set of the first component is obtained(S230). A second component is minimized. A plurality of second soft symbols are obtained(S240). The solution set of the second component is obtained(S250). The solution set of the first component and solution set of the second component are combined. The final solution set is obtained(S260).
Abstract translation: 目的：提供一种用于检测信号和接收装置的方法，用于在包括多个输入/输出天线的通信系统的接收终端处以低复杂度检测和解码信号。 构成：接收信号矢量和发射符号矢量的距离平方（S210）。 距离的平方分为第一分量和第二分量。 第一个组件被最小化。 获得多个第一软符号估计（S220）。 获得第一分量的解集（S230）。 第二个组件被最小化。 获得多个第二软符号（S240）。 获得第二分量的解集（S250）。 组合第二组分的第一组分和溶液组的溶液组。 得到最终解集（S260）。
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