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公开(公告)号：KR1020030042311A
公开(公告)日：2003-05-28
申请号：KR1020010073039
申请日：2001-11-22
Applicant: 한국전자통신연구원
IPC: G02B6/00
CPC classification number: H01S3/06758 , H01S3/094011 , H01S2301/04
Abstract: PURPOSE: An erbium-doped fiber amplifier is provided to be capable of maintaining an output optical strength of an existence channel from an optical fiber amplifier in a rapid time by compensating a gain in-homogeneity. CONSTITUTION: The first amplification stage(221,222,223,224,225) receives an input optical signal and forward and backward excitation lights and amplifies the input optical signal by an energy which is generated when erbium ions are excited by the excitation lights and are returned to an original energy level. A pre-process means performs a gain equalization process operation and an attenuation process operation of a light strength with respect to a signal amplified by the first amplification stage. The second amplification stage(271,272,273,274,275) receives a light signal processed by the pre-process means and the forward and backward excitation lights and again performs an amplification operation. A plurality of laser diodes generate a forward or backward excitation light needed for the first and second amplification stages, respectively. An input light signal detecting device(23) receives and separates a part of the input optical signal by a 50:50 ratio and converts one of separated signals into an electric signal via a filtering process for compensating a gain in-homogeneity and the other one into an electric signal without the filtering process. A laser diode controller(24) generates a forward laser diode control voltage of the first amplification stage using an output signal of the input light signal detecting device converted via the filtering process and the remaining laser diode control voltage using an output signal of the input light signal detecting device converted without the filtering process.
Abstract translation: 目的：提供一种掺铒光纤放大器，通过补偿均匀性增益，能够快速保持来自光纤放大器的存在信道的输出光强度。 构成：第一放大级（221,222,223,224,225）接收输入光信号，并且向前和向后激发光，并且通过当激发光激发铒离子并且返回到原始能级时产生的能量来放大输入光信号。 预处理装置相对于由第一放大级放大的信号执行增益均衡处理操作和衰减处理操作光强度。 第二放大级（271,272,273,274,275）接收由预处理装置和前向和后向激发光处理的光信号，并再次执行放大操作。 多个激光二极管分别产生第一和第二放大级所需的正向或反向激发光。 输入光信号检测装置（23）以50:50的比例接收和分离输入光信号的一部分，并通过用于补偿均匀性增益的滤波处理将分离的信号中的一个转换成电信号，而另一个 成为没有滤波过程的电信号。 激光二极管控制器（24）使用输入光信号检测装置通过滤波处理转换的输出信号和剩余的激光二极管控制电压使用输入光的输出信号产生第一放大级的正激激光二极管控制电压 信号检测装置不经滤波处理而转换。
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公开(公告)号：KR1020020046491A
公开(公告)日：2002-06-21
申请号：KR1020000076689
申请日：2000-12-14
Applicant: 한국전자통신연구원
IPC: G02B6/02
CPC classification number: H01S3/06754 , H01S3/06758 , H01S3/10015 , H01S3/1301 , H01S2301/04
Abstract: PURPOSE: An automatically gain controlled optical fiber amplifier is provided to improve an operating speed by respectively controlling gains of each channel in real time. CONSTITUTION: An automatically gain controlled optical fiber amplifier comprises a first optical tap(301) partially dividing an input signal, a second optical tap(302) partially dividing an output signal, an 1x2 optical coupler(303) distributing the output of the first optical tap(301) to a signal processor(330) and a first wavelength selecting filter(321), the first wavelength selecting filter(321) separating an arbitrary channel signal from a partial signal of the output signal of the 1x2 optical coupler(303), a second wavelength selecting filter(322) separating an arbitrary channel signal from a partial signal of the output of the second optical tap(302), the signal processor(330) measuring all input signal intensity and the number of input channel by receiving signals from the 1x2 optical coupler(303) and the wavelength selecting filters(321,322), a controller(340) generating controlling signals according to the result of the signal processor(330), an optical amplifying and attenuating part(310) supplying signals to the second optical tap(302) according to the controller(340).
Abstract translation: 目的：提供自动增益控制光纤放大器，通过分别实时控制每个通道的增益来提高工作速度。 构成：自动增益控制的光纤放大器包括：部分地分割输入信号的第一光学抽头（301），部分地分割输出信号的第二光学抽头（302）;分配第一光学器件的输出的1x2光耦合器 将信号处理器（330）和第一波长选择滤波器（321）的第一波长选择滤波器（321）与1×2光耦合器（303）的输出信号的部分信号分离， ，第二波长选择滤波器（322），用于将任意信道信号与第二光抽头（302）的输出的部分信号分离，所述信号处理器（330）通过接收信号测量所有输入信号强度和输入信道数量 来自1x2光耦合器（303）和波长选择滤波器（321,322）的控制器（340），根据信号处理器（330）的结果产生控制信号的控制器（340），光放大和衰减 （310）根据控制器（340）向第二光学抽头（302）提供信号。
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公开(公告)号：KR101806514B1
公开(公告)日：2017-12-08
申请号：KR1020160134529
申请日：2016-10-17
Applicant: 한국전자통신연구원
Abstract: 기지국이이동체에탑재된통신장치를위한핸드오버를수행하는방법이제공된다. 상기기지국은, 상기통신장치로부터수신되는신호를이용해, TA(timing advance)를측정한다. 상기기지국은, 상기측정된 TA와기준 TA를이용해, 상기이동체가핸드오버존(zone)에진입하였는지를판단한다. 그리고상기기지국은, 상기이동체가상기핸드오버존에진입한경우에, RSRP(reference signal received power)의평균화(averaging)를위한 RSRP 평균화주기를제1 값에서제2 값으로줄인다.
Abstract translation: 提供了一种用于基站对安装在移动体上的通信设备执行切换的方法。 基站使用从通信设备接收的信号来测量定时提前量（TA）。 基站使用测量的TA和参考TA确定移动台是否已经进入切换区域。 另外，当移动设备进入切换区域时，BS将用于将参考信号接收功率（RSRP）从第一值平均到第二值的RSRP平均周期减小。
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公开(公告)号：KR1020170129606A
公开(公告)日：2017-11-27
申请号：KR1020170052484
申请日：2017-04-24
Applicant: 한국전자통신연구원
Abstract: 지향성통신네트워크에서 RU(radio unit)는서빙구간에최초로진입한제1 이동체내부의제1 TE(terminal equipment)로부터의네트워크접속요청에따라상기하나의안테나와연결을설정한후에, 상기서빙구간에진입한제2 이동체내부의제2 TE의두 안테나중 하나의안테나로부터네트워크접속요청을수신하면, 상기제2 TE의상기하나의안테나의네트워크접속우선순위와상기연결이설정된상기제1 TE의상기하나의안테나의네트워크접속우선순위를토대로상기제2 TE로부터의네트워크접속요청을처리한다.
Abstract translation: 在双向通信网络RU（无线电单元）是一个hanhue建立与所述根据第一TE（终端设备）与第一个移动体内部的一个天线输入连接到服务间隔请求第一robuteoui网络，在进入服务间隔的连接 当它接收到来自第二TE服装几何网络中的我的天线优先级的根据权利要求1 TE服装几何我的天线的连接和网络的第二TE uidu天线内的移动构件中的一个天线的网络连接请求2，在连接建立 并根据连接优先级处理来自第二TE的网络连接请求。
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Patent Agency Ranking
公开(公告)号：KR1020160086286A
公开(公告)日：2016-07-19
申请号：KR1020160002052
申请日：2016-01-07
Applicant: 한국전자통신연구원
IPC: H04J11/00
Abstract: 이동통신시스템에서기지국은이웃셀의개수에따라서동기신호주기내에서동기신호전송에사용할슬롯의개수를결정하고, 서빙셀의셀 식별자에따라서상기결정된개수의슬롯중 제1 슬롯에동기신호를전송할동기신호영역을할당하며, 동기신호영역의위치에대응하여상기결정된개수의슬롯중에서상기제1 슬롯을제외한나머지슬롯에어떤신호도전송하지않는예비영역을할당한다.
Abstract translation: 本发明的目的是提供一种用于在移动通信系统中发送同步信号的方法和装置，以便即使服务小区的信号功率施加显着较大的干扰也能成功搜索相邻小区。 在移动通信系统中，基站确定用于在同步信号周期内发送同步信号的时隙数，分配同步信号区域，以将同步信号发送到确定数量的时隙的第一时隙，具体取决于 并且响应于同步信号区域的位置，将不发送任何信号的预备区域分配给除了确定的时隙数量的第一时隙之外的其他时隙。
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公开(公告)号：KR1020150095004A
公开(公告)日：2015-08-20
申请号：KR1020140016008
申请日：2014-02-12
Applicant: 한국전자통신연구원
CPC classification number: H04W74/0833 , H04J11/0073 , H04J2011/0096 , H04L1/00 , H04L5/0048 , H04L5/0069 , H04L5/0082 , H04L5/14 , H04W4/70 , H04W48/16 , H04W72/02 , H04W72/0446
Abstract: 사물 통신 단말을 위한 랜덤 액세스 방법이 개시된다. 단말에서 수행되는 랜덤 액세스 방법은 셀 탐색을 수행하는 단계와, 셀 탐색에 소요된 시간에 기초하여 전파 환경을 판단하는 단계 및 판단된 전파 환경에 따라 서로 다른 랜덤 액세스 절차를 수행하는 단계를 포함한다. 따라서, 열악한 전파환경에 있는 MTC 단말의 커버리지를 향상시킬 수 있고 이를 통해 기지국과 정상적인 통신을 수행할 수 있다.
Abstract translation: 公开了一种用于机器型通信终端的随机存取方法。 在终端中执行的随机接入方法包括以下步骤：搜索小区; 基于搜索小区消耗的时间来确定无线电波环境; 以及根据确定的无线电波环境执行不同的随机接入过程。 因此，本发明在弱无线电波环境中改善了MTC终端的覆盖范围，从而与基站进行正常的通信。
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公开(公告)号：KR1020120070055A
公开(公告)日：2012-06-29
申请号：KR1020100131454
申请日：2010-12-21
Applicant: 한국전자통신연구원
IPC: H04J11/00
CPC classification number: H04L25/0232 , H04L27/2613
Abstract: PURPOSE: A channel estimator is provided to estimate a channel in an optimal state by using a cell specific reference signal and a modulation reference signal. CONSTITUTION: An RS(Reference Signal) extracting unit(110) extracts a reference signal by receiving a data frame. A CRS(Cell-specific RS) extracting unit(120) extracts a cell specific reference signal from the reference signal extracted from the RS extracting unit. A DRS(Demodulation Reference Signal) extracting unit(130) extracts a modulation reference signal from the reference signal extracted from the RS extracting unit. A doppler spreading calculation unit(140) calculates doppler spreading from the reference signal extracted from the RS extracting unit. An MMSE filtering unit(150) respectively performs the least mean square error filtering of the reference signal extracted from the DRS extracting unit or the reference signal from extracted from the CRS extracting unit. An interpolation unit(160) interpolates output values of the MMSE(Minimum Mean-Squared Error) filtering unit according to output values of the doppler spreading calculation unit.
Abstract translation: 目的：提供信道估计器，以通过使用小区特定参考信号和调制参考信号来估计处于最佳状态的信道。 构成：RS（参考信号）提取单元（110）通过接收数据帧来提取参考信号。 CRS（小区特定RS）提取单元（120）从从RS提取单元提取的参考信号中提取小区特定参考信号。 解调参考信号提取单元（130）从从RS提取单元提取的参考信号中提取调制参考信号。 多普勒扩展计算单元（140）从从RS提取单元提取的参考信号计算多普勒扩展。 MMSE滤波单元（150）分别对从DRS提取单元提取的参考信号或从CRS提取单元提取的参考信号执行最小均方误差滤波。 内插单元（160）根据多普勒扩展计算单元的输出值内插MMSE（最小均方误差）滤波单元的输出值。
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公开(公告)号：KR101054299B1
公开(公告)日：2011-08-08
申请号：KR1020080131280
申请日：2008-12-22
Applicant: 한국전자통신연구원
CPC classification number: H03G3/3089
Abstract: 디지털 통신 시스템에서 자동 이득 제어 방법이 개시된다. 이 자동 이득 제어 방법에서는, 일정 시간 동안 수신된 디지털 신호의 분포와 포락선의 분포를 조사하고, 조사된 포락선의 분포를 이용하여 기준 크기보다 커야 하는 샘플 수가 계산된다. 이후, 계산된 샘플 수에 근거하여 수신 신호의 이득이 제어된다. 이에 따라 다중 유저가 존재하는 불연속적인 데이터 통신 환경에서도 효율적인 자동 이득 제어가 가능하다.
수신 신호 분포, 포락선 분포, 자동 이득 제어, 불연속적인 데이터-
公开(公告)号：KR1020110051789A
公开(公告)日：2011-05-18
申请号：KR1020090108556
申请日：2009-11-11
Applicant: 한국전자통신연구원
CPC classification number: H03M13/27 , H03M13/6505 , H04L1/0013
Abstract: PURPOSE: A method and apparatus for derate matching and deinterleaving process by inputting a plurality of demodulating data in a packet transmission mobile communication system of high capacity. CONSTITUTION: A plurality of demodulated data is input(S600). Data stored in a sub block memory is initialized to zero(S610). The demodulated data is separated into sub block data(S620). The sub block separation parameter is calculated in order to separate demodulated data into sub block memory(S630). The sub block data is stored in the sub block memory(S640). The derate matching parameter about sub block data is calculated(S650). The input state of demodulated data is determined(S660). The interleaving location about the sub block is calculated(S670).
Abstract translation: 目的：一种通过在高容量的分组传输移动通信系统中输入多个解调数据来降低匹配和解交织处理的方法和装置。 构成：输入多个解调数据（S600）。 存储在子块存储器中的数据被初始化为零（S610）。 解调后的数据被分割为子块数据（S620）。 计算子块分离参数以将解调数据分离成子块存储器（S630）。 子块数据被存储在子块存储器中（S640）。 计算关于子块数据的降额匹配参数（S650）。 确定解调数据的输入状态（S660）。 计算关于子块的交织位置（S670）。
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