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公开(公告)号：KR101873553B1
公开(公告)日：2018-07-02
申请号：KR1020150107786
申请日：2015-07-30
Applicant: 한국전자통신연구원
Abstract: 본발명의실시예에따른소형셀기지국시스템에서이동단말식별자관리방법은소형셀기지국시스템에서통신을위한이동단말식별자관리방법에있어서, 상기소형셀기지국시스템에서메시지송신시, 이동단말설정테이블정보및 테이블색인정보를포함하는송신메시지를 PHY(Physical Layer)로송신하는단계; 상기소형셀기지국시스템이상기 PHY로부터메시지수신시, 수신메시지내에포함된이동단말설정테이블정보및 테이블색인정보를추출하는단계; 및상기소형셀기지국시스템이상기이동단말설정테이블정보및 테이블색인정보로부터이동단말설정정보를획득하는단계를포함할수 있다.
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公开(公告)号：KR1020170058229A
公开(公告)日：2017-05-26
申请号：KR1020160022917
申请日：2016-02-26
Applicant: 한국전자통신연구원
Abstract: 부분메모리해제관리장치의동작방법이개시된다. 일실시예는데이터블록에블록식별자를할당하고, 상기블록식별자를프로토콜엔티티로부터전달받는경우, 상기데이터블록이분할되어생성된복수의데이터유닛각각에유닛식별자를할당하며, 상기블록식별자및 상기복수의데이터유닛중 어느하나에할당된유닛식별자를상기프로토콜엔티티로부터전달받고, 상기어느하나에대한해제요청이있는경우, 상기블록식별자및 상기유닛식별자를기초로구조체배열에접근하여상기어느하나에대응하는비트값을해제상태로변경하는단계를포함한다.
Abstract translation: 公开了部分存储器释放管理装置的操作方法。 一个实施例将块标识符分配给数据块，并且当从协议实体接收到块标识符时，将单元标识符分配给通过划分数据块而生成的多个数据单元中的每一个， 从协议实体接收分配给一个数据单元的单元标识符，并且当存在对任何一个数据单元的释放请求时，基于块标识符和单元标识符访问结构阵列， 到发布的状态。
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公开(公告)号：KR1020170058228A
公开(公告)日：2017-05-26
申请号：KR1020160022911
申请日：2016-02-26
Applicant: 한국전자통신연구원
Abstract: 타겟장치의동작방법이개시된다. 일실시예는호스트장치로부터데이터를수신하고, 미리정의된사용자함수를실행하기위한명령어가상기데이터에포함되어있는지확인하며, 상기명령어가상기데이터에포함된경우, 상기사용자함수에대응하는번호및 상기사용자함수의인자(argument)를상기데이터에서추출하고, 상기번호및 상기인자를이용하여상기사용자함수를호출하고, 상기호출된사용자함수에따라동작하는단계를포함한다.
Abstract translation: 公开了一种目标设备的操作方法。 一个实施例从主机设备接收数据并且验证用于执行预定义用户功能的指令被包括在数据中，并且如果数据被包括在数据中， 从数据中提取用户函数的参数，使用数字和参数调用用户函数，并根据被调用用户函数进行操作。
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公开(公告)号：KR1020140077676A
公开(公告)日：2014-06-24
申请号：KR1020120146747
申请日：2012-12-14
Applicant: 한국전자통신연구원
Inventor： 좌혜경
IPC: H04J11/00
CPC classification number: H04L25/022 , H04J11/00 , H04L25/025
Abstract: The present invention relates to a device for estimating a channel of a frequency area. The device for estimating a channel of a frequency area comprises: a DFT estimation selecting unit to calculate a mean signal-to-noise ratio (SNR) from a cluster-based least square (LS) estimation result and select one of multiple DFT estimation manners according to the difference; a first DFT estimating unit to perform a channel estimation of a frequency area by using only one DFT estimator under the assumption that the LS estimation results of two clusters are consecutively allocated and equally transmitted according to the selection of the DFT estimation manner; and a second DFT estimating unit to perform a channel estimation of a frequency area so that the respective channel frequency responses can be obtained by separately using the DFT estimators for the two clusters according to the selection of the DFT estimation manner. Therefore, the device of the present invention can use an optimum DFT estimation manner according to the difference in channel frequency selectivity between the two clusters, thereby maximizing the channel estimation performance.
Abstract translation: 本发明涉及用于估计频率区域的信道的装置。 用于估计频率区域的信道的装置包括：DFT估计选择单元，用于从基于簇的最小二乘估计结果计算平均信噪比（SNR），并选择多个DFT估计方式之一 根据差异; 第一DFT估计单元，用于在根据DFT估计方式的选择连续分配并均等地发送两个簇的LS估计结果的假设下，仅使用一个DFT估计器来执行频率区域的信道估计; 以及第二DFT估计单元，用于执行频率区域的信道估计，使得可以通过根据DFT估计方式的选择分别使用用于两个群集的DFT估计器来获得各个信道频率响应。 因此，本发明的装置可以根据两个群集之间的信道频率选择性的差异来使用最佳DFT估计方式，从而最大化信道估计性能。
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公开(公告)号：KR1020130106202A
公开(公告)日：2013-09-27
申请号：KR1020120027915
申请日：2012-03-19
Applicant: 한국전자통신연구원
IPC: H04L27/26
CPC classification number: H04L27/2647 , H04L25/022 , H04L25/0222 , H04L25/0232
Abstract: PURPOSE: A reception device in an orthogonal frequency division multiplexing (OFDM) system and a method thereof are provided to implement a low-power reception structure, device, and process. CONSTITUTION: A reception part receives a radio signal transmitted through a wireless channel (S501). A conversion part converts the radio signal into a frequency-domain signal (S502). An inversion part inverts a reference signal into a time-domain signal based on the number of reference signals contained in the frequency-domain signal and the arrangement interval of the reference signals in the frequency-domain signal (S503). A determination part determines delay spread based on the inverted time-domain signal (S504). [Reference numerals] (AA) Start; (BB) End; (S501) Receive a wireless signal; (S502) Convert a frequency area; (S503) Re-convert a time area; (S504) Select a delay extension process; (S505) Additionally convert the frequency area
Abstract translation: 目的：提供正交频分复用（OFDM）系统中的接收装置及其方法，以实现低功率接收结构，装置和处理。 构成：接收部接收通过无线信道发送的无线信号（S501）。 转换部分将无线电信号转换成频域信号（S502）。 反转部分基于频域信号中包含的参考信号的数量和频域信号中的参考信号的布置间隔将参考信号反转为时域信号（S503）。 确定部分基于反向时域信号确定延迟扩展（S504）。 （附图标记）（AA）开始; （BB）结束; （S501）接收无线信号; （S502）转换频率区域; （S503）重新转换时区; （S504）选择延迟扩展处理; （S505）另外转换频率区域
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Patent Agency Ranking
公开(公告)号：KR100972295B1
公开(公告)日：2010-07-23
申请号：KR1020080094078
申请日：2008-09-25
Applicant: 한국전자통신연구원
Abstract: FFT 기반의 채널 추정 방법이 제공된다. FFT 기반의 채널 추정 방법은 기준 신호들의 임시 주파수 응답을 추정하는 단계, 상기 추정된 임시 주파수 응답의 유효 대역과 인접한 적어도 하나의 이웃 대역에 추가 주파수 성분들을 삽입하여 IFFT(Inverse Fast Fourier Transformation) 입력을 구성하는 단계 및 상기 구성된 IFFT 입력을 기초로 채널 주파수 응답을 계산하는 단계를 포함한다.
채널, 추정, FFT, 주파수, 추가, 주파수 응답-
公开(公告)号：KR100857907B1
公开(公告)日：2008-09-10
申请号：KR1020070037003
申请日：2007-04-16
Applicant: 한국전자통신연구원
CPC classification number: H04B7/0842 , H04B7/0413 , H04L27/2613 , H04L27/2656
Abstract: A receiver for detecting random access preambles in a mobile communication system is provided to detect a receiving path of each receiving antenna and the random access preambles received to multiple random access channels through multi-antennas to process signals received from the multi-antennas. A conjugate complex number generator stores a preamble sequence for plural receiving signals, and outputs a conjugate complex number corresponding to a prestored preamble sequence according to a channel band at which a receiving signal composed of at least one input sample is transmitted. Pre-processing units(100,100') process each of the received receiving signals to output plural preambles respectively. Preamble calculators(200,200') output power information about the receiving signals on the basis of the plural preambles and the conjugate complex number. The power information includes power values of each of input samples composing the receiving signals. A non-coherent combiner(300) combines and outputs the outputted power information into one power information. A peak detector(400) provides preamble information about the plural receiving signals for controlling a receiver on the basis of the maximum power value in the power values of the outputted power information.
Abstract translation: 提供了一种用于检测移动通信系统中的随机接入前同步码的接收机，用于通过多天线来检测接收天线的接收路径和接收到多个随机接入信道的随机接入前导码，以处理从多个天线接收的信号。 共轭复数发生器存储用于多个接收信号的前同步码序列，并且根据传输由至少一个输入样本组成的接收信号的信道频带输出与预先存储的前同步码序列相对应的共轭复数。 预处理单元（100,100'）处理每个接收到的接收信号以分别输出多个前导码。 前导码计算器（200,200'）基于多个前导码和共轭复数输出关于接收信号的功率信息。 功率信息包括构成接收信号的每个输入样本的功率值。 非相干组合器（300）将输出的功率信息组合并输出到一个功率信息中。 峰值检测器（400）根据输出功率信息的功率值中的最大功率值，提供关于多个接收信号的前导信息，用于控制接收机。
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公开(公告)号：KR1020080079630A
公开(公告)日：2008-09-01
申请号：KR1020080018027
申请日：2008-02-27
CPC classification number: H04L5/0055 , H04L1/004 , H04L5/0007 , H04L27/3494 , H04L61/1529 , H04L2025/0342
Abstract: A bit transmission method of different control channels is provided to perform modulation by binding bits of different control channels, or to perform an encoding process by binding the bits, and to send the bound bits, thereby allocating the same frequency, time, and code resources to two pieces of information. A base station performs a CRC(Cyclic Redundancy Check) function after receiving packet data(510) from a mobile station to check whether an error exists, and if so, the base station generates an NACK bit, and if not, the base station generates an ACK bit. The base station detects reception strength of the packet data to generate a power control symbol, and transmits a symbol(520) for combining the ACK/NACK bits with the power control symbol to a downlink.
Abstract translation: 提供不同控制信道的一种传输方式，通过绑定不同控制信道的比特来执行调制，或通过绑定比特来执行编码处理，并发送绑定的比特，从而分配相同的频率，时间和码资源 到两条信息。 基站在从移动台接收到分组数据（510）后执行CRC（循环冗余校验）功能，以检查是否存在错误，如果是，则基站生成NACK比特，如果不生成，则基站生成 一个ACK位。 基站检测分组数据的接收强度以生成功率控制符号，并将用于将ACK / NACK比特与功率控制符号组合的符号（520）发送到下行链路。
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公开(公告)号：KR1020070117449A
公开(公告)日：2007-12-12
申请号：KR1020070042509
申请日：2007-05-02
Applicant: 한국전자통신연구원
IPC: H04J11/00
CPC classification number: H04L27/2657 , H04L5/0044 , H04L27/2628 , H04W72/0453
Abstract: An apparatus and a method for creating an orthogonal frequency division multiplexing(OFDM) signal are provided to decrease PAPR(Peak-to-Average Power Ratio) without attenuating bandwidth efficiency according to the transmission of additional information in an OFDM communication system. A symbol padding part(305) outputs an extended symbol stream by adding a part of a plurality of digital modulation symbols to the plurality of digital modulation symbols. A symbol search part(307) outputs plural weights corresponding to each of the plurality of digital modulation symbols by using FFT(Fast Fourier Transform) and IFFT(Inverse Fast Fourier Transform) by receiving the extended symbol stream. A symbol weight part(309) outputs a plurality of weight symbols by applying plural weights searched by the symbol search part to the plurality of digital modulation symbols by receiving the plurality of digital modulation symbols. A power compensation part(311) outputs a power compensation signal by compensating the variation of power according to the plural weights by receiving the plurality of weight symbols.
Abstract translation: 提供了一种用于创建正交频分复用（OFDM）信号的装置和方法，以便在OFDM通信系统中根据附加信息的传输而不衰减带宽效率来降低PAPR（Peak-to-Average Power Ratio）。 符号填充部分（305）通过将多个数字调制符号的一部分添加到多个数字调制符号来输出扩展符号流。 符号搜索部分（307）通过使用FFT（快速傅立叶变换）和IFFT（快速傅里叶逆变换）来输出与多个数字调制符号中的每一个对应的多个权重。 符号权重部分（309）通过接收多个数字调制符号，通过将由符号搜索部分搜索的多个权重应用于多个数字调制符号来输出多个权重符号。 功率补偿部（311）通过接收多个权重符号，通过根据多个权重来补偿功率的变化来输出功率补偿信号。
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公开(公告)号：KR1020070061234A
公开(公告)日：2007-06-13
申请号：KR1020060071319
申请日：2006-07-28
Applicant: 한국전자통신연구원
CPC classification number: H04W74/0833 , H04J13/0059 , H04L7/10 , H04L27/2628 , H04L27/265 , H04L27/2655 , H04W72/0453
Abstract: A method and an apparatus for transceiving random access data in an orthogonal multiple access system are provided to stabilize an uplink transmission scheme by a channel state of a mobile terminal by supporting two sorts of carrier assignment schemes of a distributed subcarrier assignment scheme and a localized subcarrier assignment scheme. A method for transceiving random access data in an orthogonal multiple access system includes the steps of: randomly selecting a CAZAC(Constant Amplitude Zero Auto-Correlation) code to form the random access data(S610); selecting a carrier assignment scheme for mapping the CAZAC code(S620); mapping the CAZAC code into a subcarrier according to the selected subcarrier assignment scheme(S630); and fourier-transforming the subcarrier into which the CAZAC code is mapped, and transmitting the transformed subcarrier to a base station(S650). A localized subcarrier assignment scheme and a distributed subcarrier assignment scheme are selected for mapping the CAZAC code.
Abstract translation: 提供一种用于在正交多址系统中收发随机接入数据的方法和装置，用于通过支持分布式子载波分配方案和局部副载波的两种载波分配方案来稳定移动终端的信道状态的上行链路传输方案 分配方案。 一种用于在正交多址系统中收发随机接入数据的方法包括以下步骤：随机选择CAZAC（恒幅零自相关）码以形成随机接入数据（S610）; 选择用于映射CAZAC码的载波分配方案（S620）; 根据所选择的子载波分配方案将CAZAC码映射到子载波中（S630）; 并对CAZAC码映射到的子载波进行傅里叶变换，并将变换的子载波发送到基站（S650）。 选择本地化子载波分配方案和分布式子载波分配方案用于映射CAZAC码。
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