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公开(公告)号：KR1020160106996A
公开(公告)日：2016-09-13
申请号：KR1020150029833
申请日：2015-03-03
Applicant: 한국전자통신연구원
IPC: H04B7/155 , H04B10/2575
CPC classification number: H04B7/15507 , H04B10/25753
Abstract: 본발명은보다단순하고경제적인모바일프론트홀구축및 운용이가능한아날로그무선광섬유(radio over fiber) 기반광 전송방식을원격무선유닛에적용하여디지털유닛과무선광섬유를통해통신하되, 각기다른 IF 주파수로다중화된 IF 광신호를 RF 신호로변환하고수신 RF 신호를각기다른 IF 주파수로다중화된 IF 신호로변환하는과정에서, 미리정의한동일한 IF 주파수(f)로변환하는과정을거치게함으로써대역통과필터의적용을용이하게하는, 이동단말들과무선통신을지원하는원격무선유닛및 그방법에관한것이다.
Abstract translation: 本发明涉及用于支持与移动终端的无线电通信的远程无线电单元，其中应用了能够构建和操作更简单，更经济的移动前端的基于光纤上的模拟无线电的光传输方法，其中， 在将IF复用到不同中频（IF）的IF光信号转换成射频（RF）信号并将接收到的RF信号转换为IF的过程中，执行转换为预定义的相同中频（IF（f_（IF））） 信号被复用到不同的IF频率，从而有利于带通滤波器的应用。 本发明还涉及一种用于远程无线电单元的信号处理方法。 远程无线电单元包括：M（M为自然数）扇区中的N（N为自然数）天线; MN上行链路IF转换器，其从携带由MN频率分离的信号的复用的模拟IF信号中提取对应于相应频率的信号，并将提取的信号转换为具有相同IF频率的信号; 带通滤波器，其连接到各个MN上行链路IF转换器; 以及RF上变频器，其基于施加到其上的调制方法分离由带通滤波器输出的IF信号，并且执行向RF载波频率的上变频。
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公开(公告)号：KR101310217B1
公开(公告)日：2013-09-24
申请号：KR1020100026000
申请日：2010-03-23
Applicant: 한국전자통신연구원
Abstract: 본 발명은 무선 접속 시스템에서 멀티 캐스트 연결 식별자 할당 장치 및 방법에 관한 것으로, 보다 구체적으로 무선 접속 시스템에서 MBS(Multicast and Broadcast Service) 모드를 이용하여 사용자에게 멀티 캐스트 연결 식별자를 할당하는 장치 및 방법에 관한 것이다.
본 발명의 일 실시 예에 따른 무선 접속 시스템에서 멀티 캐스트 연결 식발자 할당 방법은, MBS 채널을 선택하고, 버퍼 할당 정책을 수행하고, 상기 버퍼 할당 정책에 따라 소정의 크기만큼의 버퍼 공간을 데이터의 타입별로 각각 할당하며, 상기 MBS 채널의 연결 요청에 따라 상기 데이터에 MCID 값을 부여하고, 상기 MCID에 해당하는 MBS 버스트 영역을 갖는 프레임을 수신하고, 상기 MCID에 대응하는 MBS 버스트 영역의 데이터를 분류하여 추출하고, 상기 추출된 데이터의 MCID에 대응하는 버퍼 영역에 상기 추출된 데이터를 저장하며. 상기 버퍼 영역에 저장된 데이터의 IP 헤더에 포함된 멀티캐스트 IP 주소 정보를 이용하여 상기 MBS 채널을 식별하여 서비스를 한다.-
Patent Agency Ranking
公开(公告)号：KR1020120057086A
公开(公告)日：2012-06-05
申请号：KR1020100118666
申请日：2010-11-26
Applicant: 한국전자통신연구원
CPC classification number: H04W72/042 , H04W4/06 , H04W72/0453
Abstract: PURPOSE: A control method for allocating resources between multiple carriers and MBS(Multicast and Broadcast Service) therefor are provided to effectively share a multiple carrier resource area where a multicast service and a unicast service are allocated. CONSTITUTION: All base stations receive multicast resource allocation information from an upper layer(100) in a downlink. The base stations transmit multicast resource allocation request information to all portable terminals. The portable terminals exist within a cell through a broadcast transmission method. The base stations which exist within MBS area in an up or a down link transmit the multicast resource allocation information transmitted from the upper layer to the portable terminals.
Abstract translation: 目的：提供一种用于在多个载波和MBS（组播和广播业务）之间分配资源的控制方法，以有效共享分配多播业务和单播业务的多载波资源区域。 规定：所有基站在下行链路中从上层（100）接收组播资源分配信息。 基站向所有便携终端发送组播资源分配请求信息。 便携式终端通过广播传输方式存在于小区内。 存在于上行链路或下行链路的MBS区域内的基站将从上层发送的组播资源分配信息发送到便携式终端。
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公开(公告)号：KR1020120049646A
公开(公告)日：2012-05-17
申请号：KR1020100111011
申请日：2010-11-09
Applicant: 한국전자통신연구원
CPC classification number: H04L27/265 , H04L27/0008 , H04L27/0012 , H04L27/22 , H04L27/38
Abstract: PURPOSE: A receiving apparatus for providing bits of an OFDM(Orthogonal Frequency Division Multiplexing) signal for input bits of a fast Fourier transformer depending on a modulation method and a method thereof are provided to determine an adaptive FFT(Fast Fourier Transform) input bit number by detecting the change of the number of minimum input bits of a FFT engine depending on a modulation method. CONSTITUTION: A modulation method determining unit(400) determines a modulation method for an OFDM(Orthogonal Frequency Division Multiplexing) signal received in an OFDM system. An input bit determination unit(410) provides high 7 bits of the OFDM signal for input bits of a fast Fourier transformer in case of a QPSK(Quadrature Phase Shift Keying) signal. The input bit determination unit provides high 8 bits of the OFDM signal for the input bit of the fast Fourier transformer in case of a 16 QAM(Quadrature Amplitude Modulation) signal. A modulation method determining unit changes received OFDM signals into digital signals. The modulation method determining unit determines a modulation method for signals from which CP(Cyclic Prefix) is removed.
Abstract translation: 目的：提供一种用于根据调制方法及其方法提供用于快速傅立叶变换器的输入比特的OFDM（正交频分复用）信号的比特的接收装置，以确定自适应FFT（快速傅里叶变换）输入比特数 通过根据调制方法检测FFT引擎的最小输入位数的变化。 构成：调制方法确定单元（400）确定在OFDM系统中接收的OFDM（正交频分复用）信号的调制方法。 在QPSK（正交相移键控）信号的情况下，输入比特确定单元（410）为快速傅里叶变换器的输入比特提供高的7比特的OFDM信号。 在16QAM（正交幅度调制）信号的情况下，输入比特确定单元为快速傅立叶变换器的输入比特提供高8位的OFDM信号。 调制方法确定单元将接收到的OFDM信号改变为数字信号。 调制方法确定单元确定去除CP（循环前缀）的信号的调制方法。
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38.发明公开ＭＢＳ 서비스 관리 장치 및 상기 ＭＢＳ 서비스 관리 장치를 이용하여 단일 주파수망 환경에서 멀티캐스트 브로드캐스트 서비스 영역(ＭＢＳ ｚｏｎｅ) 구성하는 방법 失效用于在单频中包含多播广播服务的MBS服务管理装置和方法
公开(公告)号：KR1020110065284A
公开(公告)日：2011-06-15
申请号：KR1020100070193
申请日：2010-07-20
Applicant: 한국전자통신연구원
Inventor： 이용수
Abstract: PURPOSE: An MBS service management device and a method for constituting an MBS domain in a single frequency network environment by using the MBS service management device are provided to constitute the MBS domain within 1-tier MBS domain with a macro diversity method for a terminal in a cell boundary area. CONSTITUTION: A BS(Base Station) detects the location information of a terminal within 1-tier MBS(Multicast Broadcast Service) domain. The BS transfers the detected terminal location information to the MBS service management device(S102). The MBS service management device establishes an MBS domain with the terminal location information(S103). The MBS service management device transfers the identifier of the set MBS domain to the BS(S104). The terminal receives broadcasting data through the identifier of the MBS domain(S106).
Abstract translation: 目的：提供一种通过使用MBS业务管理设备，在单频网络环境中构成MBS域的MBS业务管理装置和方法，用于在1层MBS域中构成MBS域，并以宏分集方式 一个单元格边界区域。 规定：BS（基站）检测1层MBS（Multicast Broadcast Service，多播广播业务）域内终端的位置信息。 BS将检测到的终端位置信息传送到MBS服务管理装置（S102）。 MBS业务管理设备建立具有终端位置信息的MBS域（S103）。 MBS服务管理装置将设置的MBS域的标识符传送给BS（S104）。 终端通过MBS域的标识符接收广播数据（S106）。
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公开(公告)号：KR1020100070751A
公开(公告)日：2010-06-28
申请号：KR1020080129438
申请日：2008-12-18
Applicant: 한국전자통신연구원
CPC classification number: H04L25/0212 , H04L25/022 , H04L25/0226 , H04L25/0202
Abstract: PURPOSE: A channel estimating method and an apparatus thereof of a wireless telecommunications system is provided to a channel estimating performance in order to improve. CONSTITUTION: A channel estimating unit(10) estimates a channel value in a frequency domain of a received signal of a certain sub-carrier. An IDFT unit(20) changes the channel value of the frequency domain. The IDFT unit gets the channel value of a time domain. An interference removing unit(30) produces a channel delay value based on an produced interaction factor on a structure of a pilot already known. The interference removing unit eliminates the interference with substrate the produced channel delay values from the channel value of the time domain.
Abstract translation: 目的：提供一种无线电信系统的信道估计方法及其装置，以提高信道估计性能。 构成：信道估计单元（10）估计某个子载波的接收信号的频域中的信道值。 IDFT单元（20）改变频域的信道值。 IDFT单元获取时域的通道值。 干扰去除单元（30）基于在已知的导频的结构上产生的交互因子产生信道延迟值。 干扰去除单元从时域的信道值消除了产生的信道延迟值对基板的干扰。
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公开(公告)号：KR1020100067579A
公开(公告)日：2010-06-21
申请号：KR1020090025591
申请日：2009-03-25
Applicant: 한국전자통신연구원
CPC classification number: H04L27/2678 , H04L27/265
Abstract: PURPOSE: An apparatus for setting up an FFT start point and a method thereof are provided to implement a receiver which is strong in a frame sync obtainment error by offering proper offset on a reception end towards a CP section. CONSTITUTION: A start point determining part(300) moves an FFT start point in a CP(Cyclic Prefix) direction as much as sample offset according to acquisition result. An FFT(Fast Fourier Transform) part(200) performs FFT by receiving the FFT start point moved by the start point determining part. The start point determining part determines the sample offset with an SNR(signal-to-noise ratio) value.
Abstract translation: 目的：提供一种用于建立FFT起始点的装置及其方法，以通过在朝向CP部分的接收端提供适当的偏移来实现帧同步获取误差强的接收机。 构成：起始点确定部（300）根据采集结果移动CP（循环前缀）方向上的FFT起始点与采样偏移一样多的移动。 FFT（快速傅立叶变换）部分（200）通过接收由起始点确定部分移动的FFT起始点来执行FFT。 起始点确定部分用SNR（信噪比）值来确定采样偏移。
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